• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a holding device arranged to hold an object by means of a negative pressure and is arranged to release the object after holding when the negative pressure is removed. The holding device comprises a suction cup (1) which is arranged to be connected to a surface of the object by means of negative pressure, a valve housing (2), with an opening (3). The opening (3) extends through, from an upper to a lower part of, the valve housing (2), Valve housing (2) comprises an outer and an inner wall (4,5) a movable shaft (6) which cooperates with a return spring ( 7) arranged around the shaft (6). A sleeve (8) is arranged to cooperate with the return spring (7) and the lower part of the valve housing (2). A sealing element (10) seals between the valve housing (2) and the suction cup (1). A securing ring (9) is arranged to hold the suction cup (1) against the valve housing (2). Pub: Fig. 2
    公开号:SE1650397A1
    申请号:SE1650397
    申请日:2016-03-28
    公开日:2017-09-29
    发明作者:Islambegovic Amila
    申请人:Islambegovic Amila；
    IPC主号:
    专利说明:

    TECHNICAL FIELD OF THE INVENTION The present invention relates to a holding device consisting of an elastic suction cup with a valve housing which is held by means of negative pressure against an object surface which is intended to be moved to the desired location and then released by releasing.
    PRIOR ART Holding devices for moving objects by means of negative pressure are widely used in industries and companies that move materials or objects within a limited area on a daily basis, e.g. between workstations or storage locations. Examples of industries and companies are the packaging industry, the automotive industry, the robotics industry, printing companies and postal terminals. In order to avoid damage or wear to the objects being moved, vacuum-powered restraint devices are used when appropriate. By vacuum-driven holding devices is meant here a holding device in which a lower pressure, negative pressure, compared with ambient atmospheric pressure has been created. As a result, a force has been generated between the suction cup and the object which it is desired to hold, move and release. The release takes place when the negative pressure returns to normal atmospheric pressure by letting air into the suction cup. Vacuum in this sense is meant to be understood in a broader sense than an absolutely pressure-free state.
    Negative pressure can normally be created in a holding device, intended for the above-mentioned tasks, by applying a suction cup and pressing against an object which it is desired to move and thereby presses out the atmospheric pressure which is inside the suction cup. A pressure difference between the suction cup inside and the outside has thus been created. To then reset the pressure and release the object, air is released into the suction cup so that the pressure is reset. This is done with the help of different types of valves. There is an element of uncertainty involved as it is not certain that the negative pressure is sufficient for the fastening ability of the holding device. This is in many cases due, among other things, to the design of the holding device. One way to minimize this uncertainty is to connect a single vacuum pump to the valve which helps to generate the negative pressure in the suction cup. The pump has the task of creating a sufficiently large negative pressure so that the object can be held without loosening during movement. This means that the pump is connected to one or more holding devices by means of hoses.
    U.S. Pat. No. 323,0002 discloses a holding device intended for moving objects. The holding device consists of a suction cup which is connected to a valve housing and is arranged with a hose which at its other end is connected to a vacuum pump so that negative pressure can be obtained in the suction cups. These hoses and the pump are obscure and make it difficult to move an object in a simple and smooth way. And that it is unsafe the retaining device is fastened properly e.g. if problems have occurred with the pump.
    THE INVENTION IN BRIEF The invention aims to solve the above-mentioned problems with the prior art and to provide a retaining device which is designed in such a way that it is not bulky, is functionally safe and that it is not dependent on vacuum pumps and thus facilitates operation. that it has the features specified in the following claims.
    The above-mentioned problems and other problems are solved according to a holding device arranged pre-holding objects by means of negative pressure and arranged that after holding the release object when the negative pressure is removed. The holding device comprises a suction cup which is arranged to be connected to a surface of the object by negative pressure. Furthermore, a valve body, with a single opening. An opening extends through, from an upper to a lower part of, the valve housing, which comprises an outer and an inner wall a movable shaft which cooperates with a return spring which is arranged around said shaft. Furthermore, a sleeve which is arranged to co-operate with the return spring and the lower part of the valve housing. A sealing element is arranged to seal between the valve housing and the suction cup and a securing ring arranged to hold the suction cup against the valve housing. An advantage of a retaining device according to claim 1 is that it obtains a rapid application of negative pressure in the retaining device as well as a rapid removal of the negative pressure. Furthermore, there is no need for pumps to obtain a sufficient negative pressure in the holding device, which in prior art has been shown to create a time delay. The material and shape of the suction cup can be varied depending on the type of object that is desired to be moved. The pressure difference can be created in liquid environments such as under water. In this case, it is the liquid that is forced out and a negative pressure is created.
    According to one embodiment, the movable shaft, the return spring, the sleeve and the lower part of the valve housing cooperate when a longitudinal pressure is applied to the shaft. The return spring is compressed and the opener passage towards the lower part of the valve housing. When that pressure ceases, the return spring springs back and closes the passage towards the lower part of the valve housing. The movement of the movable shaft and the return spring between the sleeve and the lower part of the valve housing opens a passage between the valve housing and the suction cup, which by inflow removes the negative pressure.
    According to one embodiment, around the lower outer wall of the valve housing, at least one flange is formed which is attached to an upper part of the suction cup. The flange ensures a secure and tight connection between the valve body and the suction cup.
    According to one embodiment, the sleeve is placed in the opening between the upper and the lower valve housing and against the inner wall of the valve housing. The sleeve comprises one or more longitudinal cut-outs which enable a fluid to pass through the valve housing and into the suction cup the proximal shaft is moved longitudinally and opens the seal towards the lower part of the valve housing. By a fluid is meant in this case a gas such as air or a liquid such as water. A holding device with this type of sleeve is intended for holding and moving objects of larger size. Sleeve design makes it possible to maintain a functional size of the continuous shaft.
    According to one embodiment, the valve housing around its lower part is formed with a sealing groove. This design makes it possible to arrange a seal between the valve housing and the suction cup.
    According to one embodiment, the sealing element is an annular element placed around the lower part of the shaft and against the sealing groove in the valve housing. This secures a seal between the valve body and the suction cup so that the negative pressure can be maintained during the movement of an object.
    According to one embodiment, the sleeve is attached to an upper part of the movable shaft and in such a way that it can be pressed down into the valve housing, which enables a fluid to pass through the valve housing between the sleeve and the inner wall of the valve housing and into the suction cup when the shaft longitudinal and opens the seal towards the lower part of the valve body. This embodiment of the sleeve is intended for holding devices of smaller size. Due to this smaller size, the holding device is adapted for holding and moving small objects.
    According to one embodiment, the sealing element consists of the upper inner conical part of the suction cup and the sealer between the lower part of the shaft and the lower part of the valve housing. By using the design of the suction cup as a sealing element, the need for a separate sealing element is reduced and space is saved in the holding device, which can thus be made in a smaller model.
    According to one embodiment, the securing ring is placed around the upper outer part of the suction cup and above the flange of the valve housing so that the lower outer part of the valve housing and securing ring seals and locks the suction cup against the valve housing. Through this fuse against the valve body, the suction cup is stretched and the objects can be lifted without the suction cup risking to come loose from the valve housing.
    According to one embodiment, the securing ring is placed around the upper outer part of the suction cup together above the flange of the valve housing and under a second upper flange placed on the valve housing so that the lower outer part of the valve housing and the securing ring seals and locks the suction cup against the valve housing. Because the securing ring is placed between two flanges, a favorable design is obtained to minimize fluid leakage. In the corresponding manner, as mentioned above, the suction cup is not stretched and the objects can be lifted without the smaller suction cup risking to come loose from the valve housing.
    According to one embodiment, the outer wall of the valve housing is designed so that grippers can connect the valve housing and secure it to a moving device. Through this, the holding device can be quickly mounted on different types of machines whose task is to move objects. An example of a design is that the valve housing on the outside is provided with threads or the like.
    A work cycle for the invention is described as follows. The holding device is pressed against the object which it is desired to hold. The pressure required to press the suction cup against the object is applied to the valve body. The fluid in the suction cup is squeezed out and creates a negative pressure between the suction cup and the object. Due to this pressure difference, a strong and tight connection has been secured and the object can be moved.
    When the holding device has moved the desired position with the aid of a moving device by means of a moving device, the vertically movable shaft is pressed down a bit. As a result, fluid can pass through the valve housing and past the sealing element. The fluid then passes further into the suction cup, thereby eliminating the negative pressure between the holding device and the object which is immediately released.
    After release, the pressure on the vertical movable shaft located in the valve housing is removed, which then returns to its original sealing position by means of the return spring. The lower main pressure of the shaft then against the sealing element and the holding device is ready to be used for a new work cycle.
    The above-mentioned and other advantageous embodiments of the invention appear in more detail below detailed description of an exemplary embodiment.
    DRAWINGS The invention is described in more detail below with reference to the accompanying drawing figures which schematically illustrate the invention, wherein Fig. 1 shows a holding device according to the invention in a first embodiment; Fig. 2 shows a cross section through a holding device according to the invention in a first embodiment; Fig. 3 shows a cross section through an alternative embodiment of the invention.
    DETAILED DESCRIPTION OF THE INVENTION According to Fig. 1, the holding device according to the invention mainly consists of an elastic suction cup (1) intended to be held tightly and by means of negative pressure against an object's surface and thereby enable movement of the object to then release when the negative pressure is released. Fig. 2 shows that on the suction cup (1) a valve housing (2) with a through-opening (3) from an upper to a lower part of the valve housing (2) is arranged. The valve housing (2) comprises an outer and inner wall (4,5). Inside the inner wall (5) of the valve housing (2) there is a continuous movable shaft (6) with a return spring (7) and a sleeve (8). In the inner upper part of the suction cup (1) towards the lower part of the valve housing (2) there is a sealing element (10) which prevents fluid from being let into the ice suction cup (1) when it is to be active.
    The through-moving shaft (6) is designed in its lower part so that depending on the longitudinal position of the shaft (6) a passage (11) is closed or opened at the lower part of the valve housing (2), i.e. the valve is open or closed and regulates thus the air or liquid flow through the valve housing (2). In order to be able to do this, a return spring (7) is arranged around the movable shaft (6) in the valve housing (2) between the sleeve (8) and the lower inner part of the valve housing (2) so that the longitudinal pressure on the shaft (6) is compressed. the return spring (7) and opens the valve, ie. the opening passage (11) towards the lower part of the valve housing (2), when then the vertical pressure the return spring spring (7) ceases and closes the valve, i.e. closes the passage (11) towards the lower part of the valve housing (2).
    At least one flange (12) is arranged around the lower part of the outer wall (4) of the valve housing (2). The flange (12) connects the suction cup (1) in its upper conical part to the valve housing (2).
    In an embodiment of the invention, shown in Fig. 2, the sleeve (8) is placed in the through-opening (3) between the upper and the lower part and against the inner wall (5) of the valve housing (2). The sleeve (8) has one or more longitudinal cut-outs (13) which enable fluid to pass through the valve housing (2) and into the suction cup (1) when the shaft (6) is moved longitudinally. In this embodiment of the invention, the valve housing (2) is formed in its lower part with a sealing groove (14). In the sealing groove (14) an annular sealing element (10) is placed around the lower part of the shaft (6) and against the sealing groove (14) in the valve housing (2) which prevents fluid from being let into the suction cup (1) when it is compressed against the object desired to be moved.
    In an alternative embodiment of the invention, shown in Fig. 3, fluid can pass between the sleeve (8), which in this case is attached to an upper part of the movable shaft (6), and the inner wall of the valve housing (2), through the valve housing (2) and into the suction cup (1) when the shaft (6) with the return spring (7) is moved longitudinally and opens the seal towards the lower part of the valve housing (2). In this embodiment of the invention, the sealing element (10) against the valve housing (2) is formed by the upper inconical part of the suction cup (1) and thus seals between the lower part of the shaft (6) and the lower part of the valve housing (2) thus preventing fluid from entering the suction cup (1 ) when it is compressed against the object to be moved.
    A safety ring locks the suction cup (1) against the valve body (2). In one embodiment of the invention, it is placed around the upper outer part of the suction cup (1) and above a flange (12) arranged on the valve housing (2). In such a way that the lower outer part of the valve housing (2) and the securing ring seals and connects the suction cup (1) to the valve housing (2), thereby preventing fluid from seeping into the suction cup (1) between the suction cup (1) and the valve housing (2).
    In a second alternative embodiment, the securing ring is, in the same way, placed around the upper outer part of the suction cup (1) and above the flange (12) of the valve housing (2), but in this case also the second upper flange (15) arranged below the valve housing (2). . In the same way, this is intended to seal and connect the suction cup (1) to the valve housing (2) and prevent leakage.
    The holding device in the two embodiments is arranged in such a way that it can be connected to a moving device. The valve housing (2) is provided with threads or the like. so that grippers can be connected to the valve housing (2) and thus secure it to a transfer device.
    Depending on the nature of the object which it is desired to move, the most suitable parts of the pre-holding device are selected for material and shape and are suitably manufactured by operations known to those skilled in the art.
    The invention when not limited to the embodiment shown but can be varied and modified within the scope of the appended claims, which has been partly described above.
    权利要求:
    Claims (1)
    [1]
    A holding device arranged for holding objects by means of a negative pressure and arranged to release the object after holding when the negative pressure is removed, which holding device comprises a suction cup (1), which suction cup (1) is arranged to be connected to a surface of the object by means of negative pressure (2), , with an opening (3), which opening (3) extends through, from an upper to a lower part of, the valve housing (2), which valve housing (2) comprises an outer and an inner wall (4,5) a movable shaft (6) cooperating with a return spring (7) arranged around said shaft (6), characterized in that a single sleeve (8) is arranged to cooperate with the return spring (7) and the lower part of the valve housing (2) and that a sealing element (10) is arranged to seal between the valve housing (2) and the suction cup (1) and that a securing ring (9) is arranged to hold the suction cup (1) against the counter valve housing (2). Holding device according to claim 1, characterized in that the movable shaft (6), the return spring (7), the sleeve (8) and the lower part of the valve housing (2) cooperate when a longitudinal pressure with the shaft (6) is applied, in which the return spring (7 ) is compressed and opens a passage (11) of the lower part of the counter-valve housing (2), in which when the pressure ceases, the return spring (7) springs back and closes the passage (11) towards the lower part of the valve housing (2). Holding device according to one of the preceding claims, characterized in that the valve housing (2) is formed around its lower outer wall (4) with at least one flange (12) which is fastened in an upper part of the suction cup (1). Holding device according to one of Claims 1 to 3, characterized in that the sleeve (8) is located in the opening (3) between the upper and the lower part and against the inner wall (5) of the valve housing (2) and comprises one or more longitudinal cut-outs ( 13) enables a fluid to pass through the valve housing (2) and into the suction cup (1) when the shaft (6) is moved longitudinally and opens the seal towards the lower part of the valve housing (2). Holding device according to claim 4, characterized in that the valve housing (2) is formed around its lower part with a sealing groove (14). Holding device according to claim 5, characterized in that the sealing element (10) is a one-ring element placed around the lower part of the shaft and against the sealing groove (14) in the valve housing (2). Holding device according to one of Claims 1 to 3, characterized in that the sleeve (8) is fastened to the upper part of the movable shaft (6) and in such a way that it can be pressed down into the valve housing (2), which enables a fluid to pass through the valve housing (2) and into the suction cup (1) when the shaft (6) with the return spring (7) is moved longitudinally and opens the seal towards the lower part of the valve housing (2). Holding device according to claim 7, characterized in that the sealing element (10) constitutes the upper inner conical part of the suction cup (1) and seals between the lower part of the shaft (6) and the lower part of the valve housing (2). Holding device according to one of Claims 3 to 6, characterized in that the securing ring (9) is located around the upper outer part of the suction cup (1) and above the flange (12) of the valve housing (2) so that the lower outer part of the valve housing (2) ) and the safety ring (9) seals and locks the suction cup (1) against the valve housing (2). Holding device according to one of Claims 3 to 8, characterized in that the securing ring (9) is located around the upper outer part of the suction cup (1) and above the flange (12) of the valve housing (2) and below a second upper flange located on the valve housing (2). (15) so that the lower outer part of the valve housing (2) and the fuse ring (9) seals and locks the suction cup (1) against the valve body (2). Holding device according to one of the preceding claims, characterized in that the outer wall (4) of the valve housing is designed so that grippers can connect the valve housing and secure it to a single-movement device.
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    同族专利:
    公开号 | 公开日
    SE541608C2|2019-11-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1650397A|SE541608C2|2016-03-28|2016-03-28|Holding device for holding objects by means of a negative pressure|SE1650397A| SE541608C2|2016-03-28|2016-03-28|Holding device for holding objects by means of a negative pressure|
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