Electro-resistance-welded tube squeeze roll unit

专利摘要:
PURPOSE: To prevent displacement of a squeeze roll. CONSTITUTION: A rotating shaft 34 of a squeeze roll 8 is supported rotatably by shaft bearings 36a, 36b in a through-hole 35 of bearing boxes 23a, 23b. The rotating shaft 34 is supported by taper rollers 37 installed on the shaft bearings 36a, 36b. Both flanks 28a, 29a of the bearing boxes 23a, 23b are formed into a taper shape and fixed by pressure of side plates 24a, 24b. A pair of spacers 32 to adjust the height of the squeeze roll are installed between an upper enlarged-diameter part 34a of the rotating shaft 34 and the squeeze roll 8. The rotating shaft 34 of the squeeze roll 8 is tightly inserted into the bearing boxes by use of double nuts and thereby becomes adjustable in accordance with abrasion of the taper rollers 37 and taper surfaces 34b, 34c of the rotating shaft 34.
公开号:KR20020095090A
申请号:KR1020020031014
申请日:2002-06-03
公开日:2002-12-20
发明作者:가자마다카시；오자키가즈노리
申请人:미츠비시 신도 가부시키가이샤；
IPC主号:

专利说明:

Electro-resistance-welded tube squeeze roll unit
[22] The present invention relates to a squeeze roll unit apparatus for heating a plate-like body in a tubular shape and heat welding both edges by a squeeze roll.
[23] Conventionally, an electric seal pipe used for a hot water supply pipe, a water supply pipe, or a heat exchanger such as an air conditioner or a refrigeration device is rolled and formed in a tubular shape while traveling with a plate-like body made of copper or brass. A welding means composed of a welding machine, a high frequency resistance welding machine, or the like is manufactured by welding while continuously sending both edges.
[24] At the time of welding, edges of both ends of the plate-shaped body which are curled in a C-shape are heated by a work coil such as an induction heating coil or a high frequency dielectric welder including a ferrite core or the like, and Joule heat is generated intensively at both edges. . And the plate-shaped body is formed in a tubular shape by being pressed in contact with each other by pressing the edges of the heated ends when passing between a pair of squeeze roll in a C-shaped state. Since the C-shaped plate is slid from the concave curved surface of the squeeze roll and is bent in a tubular shape along the concave surface while the squeeze roll is driven continuously, both ends are welded, so that a load is applied to the supporting member supporting the rotating shaft of each squeeze roll. .
[25] Thus, for example, as shown in Fig. 6, both side surfaces b and b of the supporting member a are pressed and supported by the pressing member to prevent the displacement of the squeeze roll d. In addition, when the semi-circular concave curved surface e of the pair of squeeze rolls d is shifted in the up-down direction or the left-right direction, problems such as insufficient welding of the electric tube or problems in the shape of the tube may occur. It is necessary to perform the position adjustment so that the pair of substantially semi-circular concave curved surfaces e of the roll coincide in the vertical and horizontal directions so as to form one substantially circular concave curved surface for forming the C-shaped plate-like body into the electric sealing tube.
[26] However, since both side surfaces b and b of the support member a form a vertical plane that is substantially perpendicular to the upper and lower surfaces, the wear member c is worn out when worn over time due to the load by the traveling plate member. There is a gap in the gap, which causes a problem that the pair of squeeze rolls d and d cannot be sufficiently fixed at predetermined intervals.
[27] In addition, when supporting the rotating shaft of the squeeze roll (d) by the supporting member (a), the bearing is arranged in the radial direction and the thrust direction so that the rotating shaft can be rotatably supported, so that each radial bearing and the thrust bearing are loaded with the same load. If it is not set, a pair of squeeze rolls will not follow evenly, and there exists a possibility that it may interfere with the heat welding of an electric sealing pipe. In addition, the pair of squeeze rolls must be aligned vertically and horizontally to form a pair of substantially semi-circular concave curved surfaces to form a substantially circular concave curved surface. As time passes, the axis of rotation of the squeeze roll (d) There is also a problem that abrasion of the bearing or the like is likely to occur and displacement occurs. In such a case, it is difficult to adjust the position of the squeeze roll.
[28] In view of such circumstances, it is an object of the present invention to provide a squeeze roll unit apparatus for an electric sealing tube which can prevent displacement of the squeeze roll.
[1] 1 is a schematic configuration diagram showing a line of an apparatus for manufacturing an electric tube according to an embodiment of the present invention;
[2] Figure 2 is a plan view of the main part showing a state of welding the electric tube by the squeeze roll,
[3] 3 is a plan view of the main part of the squeeze roll unit,
[4] 4 is a longitudinal cross-sectional view taken along the line A-A of the squeeze roll unit device shown in FIG.
[5] 5 is a schematic side view showing a part of the squeeze roll unit device shown in FIG.
[6] 6 is a schematic side view of a portion of a conventional squeeze roll unit breakage.
[7] <Description of the code>
[8] 8: squeeze roll
[9] 20: squeeze roll unit
[10] 23a, 23b: bearing box (support member)
[11] 24a, 24b: side plate (pressing member)
[12] 25: adjusting member
[13] 28a, 29a: side
[14] 32: spacer
[15] 34: rotating shaft
[16] 36a, 36b: bearing
[17] 37: tapered roller
[18] 38: nut
[19] 42a, 42b: contact surface
[20] P: Jeonbong Pavilion
[21] T: platelet
[29] In the squeeze roll unit device of the electric resistance pipe according to the present invention, in the squeeze roll unit device of the electric resistance pipe formed by rolling a traveling plate-like body in a tubular shape and passing between a pair of squeeze rolls to heat weld the edges at both ends thereof. A side surface of the support member rotatably supporting one of the rotating shafts is formed in a tapered shape, and the side surface of the support member is fixed by pressing members.
[30] When the plate-like body is heated and welded in a tubular shape with a squeeze roll while traveling, the C-shaped traveling body slides on each concave curved surface of the pair of squeeze rolls and is rolled and welded in a tubular shape. At this time, the squeeze roll receives the load and the side of the support member slides with the pressing member and wears. In such a case, since the side of the support member is tapered, the pressing member is secured by pressing the pressing member so that both sides are secured by the pressing member. It can be pressed and fixed, and a support member can be fixedly supported.
[31] In addition, the contact surface of the pressing member in contact with the side surface of the support member may be formed in a tapered shape so as to be in surface contact with the side surface of the support member.
[32] In addition, a spacer for adjusting the height of the squeeze roll may be detachably provided under the squeeze roll.
[33] By selectively mounting any one of several kinds of spacers having different thicknesses, the height of each concave curved surface of the pair of squeeze rolls can be matched to form an approximately circular concave curved surface for forming an electric sealing tube with excellent roundness as a whole.
[34] In addition, the axis of rotation of the squeeze roll may be rotatably supported by a bearing having a tapered roller which extends into the support member and is inclined with respect to the axis of rotation.
[35] Since the bearing having the tapered roll has the same bearing force in both the horizontal and vertical directions as one bearing, it can support the rotation axis of the squeeze roll in the thrust direction and the radial direction in a rotatable state.
[36] In addition, the rotating shaft of the squeeze roll may be fixed to the support member below the bearing so as to be height-adjustable by a double nut.
[37] The double nut can firmly support the rotating shaft of the squeeze roll, and even if the tapered roll of the bearing or the rotating shaft part in contact with it is worn, the supporting strength of the rotating shaft can be secured by tightening the double nut, and the rotating shaft can be rotated. It can be supported in the trust direction and the radial direction.
[38] Hereinafter, a squeeze roll unit apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. 1 is a schematic configuration diagram showing a line of an apparatus for manufacturing an electric tube, FIG. 2 is a schematic plan view showing a pair of squeeze rolls and an electric tube in a welded portion of the manufacturing apparatus shown in FIG. 1, and FIG. 3 is a support structure of the squeeze roll. 4 is a partial cross-sectional view showing the main part partially broken, FIG. 4 is a cross-sectional view taken along line AA of the squeeze roll supporting structure shown in FIG. 3, and FIG. 5 is a side view showing the supporting structure of the squeeze roll shown in FIG.
[39] The electric sealing tube according to the embodiment of the present invention relates to a simple metal tube having a smooth inner surface used for, for example, a hot water supply pipe, a water supply pipe, etc., but has a groove on the inner surface used in a refrigerator or an air conditioning facility, or a metal tube having an uneven structure formed on the outer surface. Applicable to any metal tube. Moreover, although the material of the electric sealing tube which concerns on embodiment is a brass tube, it is applicable to a copper tube, an aluminum tube, another metal tube, etc.
[40] In the manufacturing apparatus 1 of the electric sealing tube (henceforth a tube) shown in FIG. 1, the continuous strip | belt-shaped plate T which consists of a strip | belt-shaped metal of a certain width | variety, for example, brass, is removed from the uncoiler 2. The plate-shaped body T, which is continuously released and released, is gradually rolled into a C shape through a pair of forming rolls 4 arranged through a pair of pressing rolls 3. By the rolling separator 5, the gap amount between the edges of both ends of the plate-shaped object T to be brought into contact with each other is kept constant, and then passes through the work coil of the induction heating unit, for example, the induction heating coil 6.
[41] Induction heating coil (6) heats the plate-shaped body (T) rolled in a C-shape to generate Joule heat concentrated at both edges. And as shown in FIG. 2, when the plate-shaped object T passes between a pair of squeeze rolls 8 and 8, the edge of a heated end is pressed and abuts and welds. On the inner and outer surfaces of the pipe P to which the plate-shaped body T is welded, the outer surface and the inner surface beads are formed by the molten material pushed out from the welding portion, and these are removed by a cutting device.
[42] Then, the tube P is forcedly cooled through the cooling tank 12 and then reduced in diameter to a predetermined outer diameter through the sizing rolls 13 arranged in pairs. And the tube P shaped by the shaping | molding roll which is not shown in figure is cut | disconnected by the cutting machine 14 every predetermined length, for example every 4-6m, and is laminated | stacked on the storage table 15. As shown in FIG.
[43] Next, the squeeze roll unit apparatus 20 for supporting the squeeze rolls 8 and 8 according to the present embodiment of the apparatus 1 for manufacturing an electric resistance tube having the above schematic configuration will be described in detail with reference to FIGS. 3 to 5. do.
[44] 3 to 5, the squeeze roll unit apparatus 20 includes a base portion 22 in which a groove portion 21 is formed in an arrangement direction of two squeeze rolls 8 and 8, and squeeze rolls 8 and 8; ) And a pair of bearing boxes 23a and 23b (support members) rotatably supported and slidably supported on the base portion 22, respectively, for pressing and holding both sides of each bearing box 23a and 23b. An adjustment member for sliding and sliding the side plates 24a and 24b (pressing member) and the pair of bearing boxes 23a and 23b in a direction of approaching and separating from each other. It consists roughly by 25.
[45] As shown in Figs. 3 and 4, the base portion 22 has a pair of side portions 27b having a bottom portion 27a and a substantially L-shaped cross section provided to face along both ends of the upper surface of the bottom portion 27a. 27c, and similarly have an end portion 27d which is erected to be substantially orthogonal to the side portions 27b and 27c on the upper surface of the bottom portion 27a to form a substantially box shape, and the bottom portion 27a has both side portions 27b and 27c. The groove portion 21 is formed along the extension direction of the In other words, the groove part 21 is formed in the direction substantially orthogonal to the running direction of the plate-shaped object T. As shown in FIG.
[46] In addition, the bearing box 23a (23b), as shown in Figure 4, has a substantially T-shaped cross-sectional shape having both wing portions 28, 29 and the fitting portion 30, the fitting portion 30 Is slidably fitted into the groove portion 21 of the base portion 22. Side surfaces 28a and 29a of both ends of the wings 28 and 29 are opposed to each other and are formed in a tapered shape so as to gradually widen the intervals from the top to the bottom. One wing 28 has a through screw hole 31A having a female screw formed along the groove portion 21.
[47] In addition, the other bearing box 23b has the same configuration (the same components will be omitted using the same reference numerals), and similarly, the through-threaded screw threaded with female threads along the grooves 21 on one wing 28 ( 31B) is formed. The through screw holes 31A and 31B are arranged coaxially to form the same linear shape, and the female screws of the through screw holes 31A and 31B are formed in opposite directions to each other.
[48] In addition, the squeeze roll 8 is formed in a substantially disk-shaped thick, the side corresponding to the thickness portion is formed with a concave curved surface 33 having a semi-circular cross section over its entire circumference, and a pair of squeeze rolls 8, 8 ) Is welded at both ends by rolling the plate (T) in a substantially tubular shape between two concave curved surfaces 33 and 33 facing each other in a state arranged side by side in the horizontal direction along the groove portion 21 of the base portion 22. The pipe P is formed. The rotary shaft 34 is fixed through the central portion of the disk-shaped squeeze roll 8.
[49] The spacer 32 is detachably inserted between the upper diameter enlarged portion 34a and the squeeze roll 8 formed on the rotary shaft 34. By appropriately replacing the spacers 32 with ones having different thicknesses, the heights of the concave curved surfaces 33 and 33 can be adjusted between the pair of squeeze rolls 8 and 8. In addition, a nut 26 for fastening the squeeze roll 8 is screwed to the upper portion of the squeeze roll 8 of the rotary shaft 34, and the nut 26 when the height of the squeeze roll 8 is adjusted. Just retighten.
[50] The bearing box 23a is formed with a through hole 35 extending from the upper surface into the fitting portion 30, and bearings 36a and 36b are mounted on the upper and lower portions of the through hole 35, and each bearing 36a, A plurality of tapered rollers 37 are provided at 36b) in a state inclined at a predetermined angle with respect to the extending direction of the rotation shaft 34. Then, the rotary shaft 34 of the squeeze roll 8 is inserted into the through hole 35 through the bearings 36a and 36b so that each tapered surface 34b, 34c of the rotary shaft 34 is tapered on the upper and lower tapered rollers 37. By contact, it is rotatably supported by the bearings 36a and 36b.
[51] Two nuts 38 and 38 are fastened to the lower portion of the rotary shaft 34 protruding downwardly from the lower bearing 36b in the through hole 35 so that the rotary shaft 34 is rotated with respect to the bearings 36a and 36b as double nuts. ) Is rotatably fixed. In addition, an oil seal 39 is attached to the outer side of the upper bearing 36a and the outer side of the double nuts 38 and 38 between the rotary shaft 34 and the through hole 35, respectively.
[52] Accordingly, the rotating shaft 34 of the squeeze roll 8 is rotatably supported in the radial direction and the thrust direction by the tapered rollers 37 of the pair of bearings 36a and 36b, and tapered as time passes by use. When the tapered surfaces 34b and 34c of the roller 37 or the rotating shaft 34 are worn, the double shafts 38 and 38 are further tightened, or the spacer 32 is replaced, so that the rotating shaft 34 is tapered. It can be adjusted so as to be rotatably supported by the bearings 36a and 36b provided with ().
[53] The side plates 24a and 24b are mounted between the bearing boxes 23a and 23b and the side portions 27a and 27b of the base portion 22, so that the amount of the bearing boxes 23a and 23b with the bolts 40a and 40b. The sides 28a and 29a of the wings 28 and 29 are pressed and fixed. The contact surfaces 42a and 42b of the side plates 24a and 24b are tapered to press the side surfaces 28a and 29a of the wing portions 28 and 29 to be in surface contact with the side surfaces 28a and 29a. In addition, the upper ends of the contact surfaces 42a and 42b serve as the jaws 43a and 43b so as to be locked to the upper surfaces of the wings 28 and 29.
[54] Next, in the adjusting member 25, the adjusting bolt 45 penetrating the end portion 27d of the base portion 22 is a through screw hole of both bearing boxes 23a and 23b arranged along the groove portion 21. Screwed into 31A, 31B). The head 46 is provided as an operation part on the side opposite to the bearing boxes 23a and 23b with respect to the adjustment bolt 45 at the end 27d. A cylinder portion 47 penetrating the adjustment bolt 45 is inserted into the end portion 27d, and thrust bearing portions 48 and 48 for rotatably supporting the adjustment bolt 45 are provided on the inner surface of the cylinder portion 47. have.
[55] Thus, by rotating the head 46 of the adjustment bolt 45 forward or reverse, the bearing boxes 23a and 23b are connected to each other along the groove 21 through the through screw holes 31A and 31B which are opposite to each other. It moves in the direction of being approached or spaced apart, thereby moving the squeeze rolls (8, 8) respectively supported in each bearing box (23a, 23b) close to or away from each other.
[56] Therefore, the squeeze rolls 8 having different dimensions can be exchanged and mounted according to the difference in the outer diameter or the thickness of the pipe P to be manufactured, and the spacing between these squeeze rolls 8 and 8 can be adjusted appropriately by the adjustment member 25. have.
[57] Since the squeeze roll unit apparatus 20 of the electroplating tube P which concerns on a present Example has the structure mentioned above, in the manufacturing apparatus 1 of the electroplating tube P shown in FIG. ) Is continuously released from the uncoiler (2), and gradually rolled into a C shape through the forming roll (4) to pass the induction heating coil (6). When the plate-shaped body T heated in the induction heating coil 6 passes between the pair of squeeze rolls 8 and 8, the heated end edges abut each other and are welded.
[58] As shown in Figs. 3 and 5, the pair of parallel squeeze rolls 8 and 8 further forms a substantially circular space in the concave curved surfaces 33 and 33 while passing through the C-shaped plate body T. The pipe P is formed by heating and welding the edges of both ends. Therefore, the squeeze rolls 8 and 8 are subjected to a load because the C-shaped plate body T running is in contact with the concave curved surface 33, and the load is applied to the rotary shaft 34 and the bearing 36a. And 36b) in the bearing boxes 23a and 23b.
[59] Therefore, since the side surfaces 28a and 29a of the wing parts 28 and 29 of the bearing boxes 23a and 23b are in surface contact with the contact surfaces 42a and 42b of the side plates 24a and 24b, the time is elapsed. As they wear, gaps occur and rattling occurs. Even in this case, since the side surfaces 28a and 29a of the wing portions 28 and 29 and the contact surfaces 42a and 42b of the side plates 24a and 24b are both formed of tapered surfaces, the side plates 24a and 24b are formed. By further tightening the horizontal and vertical tightening bolts 40a and 40b, the side plates 24a and 24b are pressed against the side surfaces 28a and 29a of the wing portions 28 and 29, thereby preventing rattling due to wear. By suppressing, the bearing boxes 923a and 23b can be reliably positioned and fixed.
[60] Moreover, by providing the taper roller 37 in the bearings 36a and 36b which rotatably support the rotating shaft 34 of the squeeze roller 8, it can support in a thrust direction and a radial direction. Therefore, it is not necessary to provide bearings in both the trust direction and the radial direction, and there is no need to adjust these bearings individually, so that adjustment is easy and the number of parts can be reduced. In addition, even if the tapered roller 37 or the tapered surfaces 34b and 34c come into contact with the tapered surfaces 34a and 34b of the rotary shaft 34, the double nuts 38 and 38 mounted on the lower portion of the rotary shaft 34 are also worn. By further tightening, the rotating shaft 34 can be reliably supported in the trust direction and the radial direction in a rotatable state.
[61] In addition, the height of the concave curved surface 33 can be adjusted by appropriately exchanging and mounting spacers 32 having different thicknesses between the upper diameter expanding portion 34a of the rotating shaft 34 and the squeeze roll 8. The height of the concave curved surfaces 33 and 33 can be reliably adjusted between the squeeze rolls 8 and 8. Also, by rotating the adjusting bolt 45, the squeeze rolls 8 and 8 are brought closer to each other by moving the bearing boxes 23a and 23b closer or away from each other through the through screw holes 31A and 31B having female threads in opposite directions. Alternatively, the gap between the concave curved surfaces 33 and 33 can be adjusted.
[62] In addition, although two bearings 36a and 36b rotatably supporting the rotating shaft 34 are provided in the through hole 35, three or more bearings may be provided. In addition, the contact surfaces 42a and 42b of the side plates 27b and 27c in contact with the side surfaces 28a and 29a of the wing portions 28 and 29 of the bearing boxes 23a and 23b are not necessarily tapered surfaces. The side surfaces 28a and 29a of the blade portions 28 and 29 may be tapered.
[63] In addition, a separate nut or the like may be attached to the rotating shaft 34 instead of the upper diameter-expansion portion 34a supporting the squeeze roll 8 through the spacer 32, which constitutes a locking member of the spacer 32. do.
[64] In the squeeze roll unit device of the electric resistance tube according to the present invention, the side of the support member for rotatably supporting the rotating shaft on which the squeeze roll is fixed is formed in a tapered shape, and the side of the support member is fixed to the pressing member so that when the electric resistance tube is formed, Even if the side of the support member is rubbed against the pressing member by the load of the member, the side is tapered. Therefore, the pressing member can be reliably pressed to the pressing member to secure the squeeze roll. I can support it.
[65] In addition, since a spacer for adjusting the height of the squeeze roll is detachably provided at the bottom of the squeeze roll, by selectively mounting various types of spacers having different thicknesses, the height of each concave curved surface of the pair of squeeze rolls is adjusted to match the high quality. It can manufacture the sealant pipe of.
[66] In addition, the rotary shaft of the squeeze roll is rotatably supported by a bearing having a tapered roller extending in the support member and inclined with respect to the rotary shaft, so that the rotary shaft is supported by two kinds of bearings in two directions, that is, the thrust direction and the radial direction. can do.
[67] In addition, since the rotation axis of the squeeze roll is fixed to the support member by a double nut at a lower side of the bearing so that the rotation axis can be firmly supported, and the taper roll of the bearing is worn out, by tightening the double nut The rotating shaft can be rotatably supported.

权利要求:
Claims (4)
[1" claim-type="Currently amended] In the squeeze roll unit apparatus of the electric resistance pipe | tube which rolls a plate-shaped body which travels in a tubular shape, and heat-welds both edges through a pair of squeeze rolls,
And a side surface of the support member rotatably supporting the rotating shaft on which the squeeze roll is fixed is formed in a tapered shape, and the side surface of the support member is pressed and fixed by the pressing member.
[2" claim-type="Currently amended] The squeeze roll unit apparatus according to claim 1, wherein a spacer for adjusting the height of the squeeze roll is detachably provided at a lower portion of the squeeze roll.
[3" claim-type="Currently amended] The squeeze roll unit apparatus according to claim 1 or 2, wherein the rotating shaft of the squeeze roll is supported by the bearing having a tapered roller which extends into the supporting member and is inclined with respect to the rotating shaft.
[4" claim-type="Currently amended] 4. The squeeze roll unit apparatus according to claim 3, wherein the rotating shaft of the squeeze roll is fixed to the support member at a lower side of the bearing by a double nut for height adjustment.

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同族专利:

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公开号 | 公开日

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JP2003001323A|2003-01-07|

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CN1390675A|2003-01-15|

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EP1270099A3|2004-06-09|

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2001-06-13|Priority to JPJP-P-2001-00178931

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2001-06-13|Priority to JP2001178931A

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2002-06-03|Application filed by 미츠비시 신도 가부시키가이샤

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2002-12-20|Publication of KR20020095090A

优先权:

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申请号 | 申请日 | 专利标题

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JPJP-P-2001-00178931|2001-06-13|

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JP2001178931A|JP2003001323A|2001-06-13|2001-06-13|Squeeze roll unit device for electric resistance welded pipe|