![]() Method of producing three-dimensional rigidity element of mouldable synthetic powder or mixture cont
专利摘要:
The invention is intended for the manufacture of a three-dimensional stiffening element and simplifies its manufacture. A method of manufacturing a three-dimensional stiffening element from a fusible synthetic powder or from a mixture containing synthetic powder consists in applying a fusible synthetic powder or powder mixture to an auxiliary carrier, shaping the mixture obtained and sintering it under heat and pressure with a punch to melt the mixture particles. After the mixture is formed by an auxiliary carrier, the formed stiffening element is transferred onto the processed semi-finished product by first lifting it onto a heated semi-finished product, on which the powder mixture is continued to heat until the particles melt. Thereafter, the molded three-dimensional stiffener is connected to the semifinished product being processed. The working surface of the punch is made of polytetrafluoroethylene. 1 hp f-ly, 2 ill. 公开号:SU1510712A3 申请号:SU864028477 申请日:1986-11-03 公开日:1989-09-23 发明作者:Бремер Харальд;Вильдинг Эмиль 申请人:Гиулини Хеми Гмбх (Фирма); IPC主号:
专利说明:
The invention relates to the manufacture of three-dimensional stiffeners from a fusible synthetic powder or from a containing synthetic material. The powder mixture is used in the manufacture of footwear, clothing and leather goods. The aim of the invention is to simplify manufacture. . FIG. 1 shows a device for carrying out the proposed method, side view; in FIG. 2 - the same, top view. A method of manufacturing a three-dimensional stiffener element from a fusible synthetic powder or from The synthetic powder of the mixture consists in applying to the auxiliary carrier through a template of a fusible synthetic powder or powder mixture, shaping the resulting powder mixture and sintering it upon exposure. and pressure using a punch to melt the particles of the mixture, transferring the formed stiffening element to the processed semifinished product with an auxiliary carrier and connecting it to the latter, in particular with the areas of the top blank. Transferring the formed stiffening element to the processed semi-fab 3151 Ricking is carried out first by lifting onto a heated punch, on which the powder mixture is further heated to melt the particles, and then the molded three-dimensional stiffener is connected to the semifinished product. For easy removal of the stiffener with the semifinished product. For easy removal of the stiffener from the punch, the working surface of the punch is made of polytetrafluoroethylene. When implementing the iipewiaraeMoro method, it is necessary to take into account that when the heated punch is raised, the adhesion of the melted sintered stiffener to the surface of the latter exceeds the adhesion of the sintered stiffener to the auxiliary carrier, and the cohesive forces of the sintered powder particles exceed the forces of their adhesion to the auxiliary carrier and the surface of the punch, that the adhesion of the stiffener to the surface of the punch while the element is in the punch exceeds the mass of the stiffener, which This should be less than the cohesive forces in the melt, and that when transferring a molten stiffening element to a substrate that is stiffened, or to an auxiliary carrier, the fusion of the melt with the latter exceeds its adhesion to the surface of the punch, and the cohesive forces in the molten stiffening element exceed its adhesion to the punch surface. The implementation of the method is preferable if the total mass of the substrate (receiver), which is stiffened, and the stiffener element exceeds the adhesion of the molten part to stiffen the surface of the punch, since this can even prevent the receiving substrate from attaching to the substrate. Due to the double transfer of the stiffening element, the method becomes more reliable and greatly simplified. The substrate, which is attached to stiffness (part of the shoe), was constantly in the implementation of the method of double transfer on a stable substrate, so that the portable stiffening element is always pressed in the direction Q 5 0 5 o “Q five five 24 top down, not bottom up. The positioning of the substrate and the direction of the stiffening element to it are thereby simplified. According to the invention, in the second transfer stage, the molten stiffening element can be applied first to an auxiliary carrier (e.g., paper), from which it can be easily removed after cooling. Fabricated in a similar manner, the stiffening parts may subsequently be independently applied to the receiving substrates, provided that they are suitably activated, for example, by disintegrating, gluing with adhesives or solvents. For the first transfer step, particularly suitable carriers are silicone rubber sheets or boards. Auxiliary media may also have a concave shape under the templates, i.e. detecting recesses, which allows convex stiffeners to be obtained. Auxiliary carriers formed in other ways, for example with a wedge-shaped cavity, may be used. As auxiliary carriers in the second transfer stage for transferring the heated stiffening material from the punch, both cloths and plates, e.g., polyvinyl chloride or polyurethane paper, are suitable for applying a portable coating, aluminum, polyesters (e.g. mylar R) or polyethylene terephthalate (for example, hostan R). The contact side of the punch is preferably provided with a polytetrafluoroethylene (Teflon R) coating. The method in which three-dimensional stiffening parts are firmly bonded to a textile carrier (parts based on fabric, knit, fleece) is carried out as follows. The textile cut, even before the first transfer, is superimposed on the pieces to impart stiffness in powder form, sintered on the surface if necessary. Upon pressing and transferring to the punch, a textile cut, which should have an open structure (pores, holes), is connected to the stiffening part (damage to the subsequent steps of the method is not observed from the application of the textile parts). 515 The presence of a carrier of textiles prevents thinning under the effect of the resulting tensile forces of the part to impart stiffness during the assembly of the shoe, at which it is re-plasticized. That is, the carrier is a brake preventing thinning, and additionally strengthens the stiffening material. In another embodiment of the method, the molten stiffening element can be firmly connected to the carrier part from textiles and in the second transfer stage, namely by pressing and securing a part of the textiles on the stiffener within. an additional process step (working stroke), which is performed following the transfer of the stiffening part to the stiffening substrate or to the auxiliary carrier. In this case, some of the textiles may also become the inner lining of the shoe. The template needed to apply the powder is made using cutters, a sufficient supply of which in various design options is available from the manufacturers of the parts for stiffening or shoe factories, by cutting the desired shape for the stiffener from the material for making the templates, for example fiberglass reinforced polypropylene board. The cross-section of the board should correspond to its purpose. It can be uniform, wedge-shaped, etc. Due to the fluidity of the material during the pressing process, it is advisable to take the size of the cutout in the template somewhat smaller than the size of the desired finished product (for example, it is sufficient to take the size of the cutout approximately 1-2 mm smaller). In the implementation of the double transfer method according to the invention, it is preferable if the powder applied by patterning is first heated before compaction and sintering to such an extent that the surface of the applied powder becomes slightly stronger, i.e. slightly warmed or melted. This avoids turbulence in the powder layer, otherwise it appears when the heated punch is too fast, and 12 thereby reducing the working time or work cycle. For example, a mixture of fusible synthetic powder and powdered filler (preferably a powdered filler with a particle size of 50-600 µm, in particular lOd - 400 µm, comparable to the grain size of the synthetic powder) can be used as a synthetic powder blend. However, the synthetic powder can be used without the filler and without mixing with other synthetic particles (for example, polymers that melt in a higher temperature range and thus take on the role of the filler in the unmelted state). Suitable mixtures are, for example, mixtures of high and low pressure polyethylene and mixtures of polyethylene and ethylene-vinyl acetate polymerization product. Polycaprolactone and ionomeric resins should also be mentioned as suitable synthetic materials with a low melting point. Wood flour, cork flour, chalk, talc, silica and other organic and inorganic materials can also be used as fillers in amounts up to 100% by volume of the synthetic powder. In a further embodiment of the method, the three-dimensional stiffener may be multi-layered. For this purpose, the same or different melt layers are sequentially pressed. . The double transfer method can be carried out both in the stationary and in the continuous version. In the latter case, this method can be carried out using a flow line, which consists, for example, of a continuous belt conveyor (auxiliary carrier) divided into at least two technological positions, the first technological position being equipped with a device for applying powder, and the second - with a pressing device . A continuous flow line may consist, for example, of two endless belt conveyors (auxiliary carriers), between which a heating roll moves, removing the applied powder from the first auxiliary carrier and transferring it after melting to the second auxiliary carrier. The powder application device 1 serves to supply the synthetic powder through the shaped notch of the template 2 to the auxiliary carrier belt conveyor) 3. The endless belt conveyor 3 is driven to. the movement of the roller 4 and with the help of the guide roller 5 reverses its direction of movement (again to the first technological position). W 1blon 2, which can serve as a 1.5 mm thick plate made of glass fiber reinforced polypropylene, in which the required shape of the stiffening element is cut out with a cutter, can be laid on a conveyor belt. It is fixedly connected to the powder application device 1 and can be removed from the belt conveyor after applying a portion of powder 6, The powder application device 1 is a box-shaped squeegee made of sheet stainless steel, the width of which is at least sufficient to cover the entire width of the cut-out in the template, taking into account the filling of the systhetic powder in its hollow space and which, in addition, can move along both sides of the guide. The guides are transverse to the direction of movement of the belt conveyor, with an angle H formed by the guiding and moving direction being 10-170 (preferably 85-95), The box squeegee is moved along the side and top guides across the direction of movement of the belt conveyor. For each pressure stroke, the box filled with synthetic powder is moved once above the cut-out of the template, and a pneumatic cylinder is used as a drive. After the synthetic CMI is filled with the powder of the hollow space formed by the belt conveyor and the cutout of the template, the template raises the c and deposited portion of the powder is moved to the second process position. After that, by reducing the pressure, the return movement of the box squeegee and the next 0 5 0 0 0 five powder feed to belt conveyor, In this form, the box squeegee 1 moving along the guides is carried out and the template 2 can be lifted from the belt in one direction and movably fixed at the pivot point which is located some distance behind the roller 4. When the applied portion of powder 6 is located at the second technological stage position, it is preheated by the radiator 7, which can be any source of heat, and so much so that less adhesion of particles on the surface (sintering) takes place. intense air movement. At the next pressure stroke, the applied portion of powder 6 is moved to the third technological position, compacted there with the help of the heated punch 8, after sintering the particles of synthetic material adheres to it due to melting and rises from the conveyor belt. During connection with the punch 8, especially at the top dead center, the melting process continues and the desired viscosity reduction is achieved. Part 9 of the shoe, which is stiffened, is under the punch 8 and, at the next pressing operation, takes on the stiffening element from the punch. After raising the punch, a portion of the shoe that has been stiffened is either glued over with a new press stroke, or sent for further processing after being removed from the tape. The cutout in the template is usually somewhat smaller than the required size of the finished product, since an increase due to the pressing and fluidity of the synthetic powder is inevitable. Fig. 2 also shows the guides 10 and the turning point IT of the powder applicator. The proposed method can also be carried out using a device having a different design.
权利要求:
Claims (2) [1] Invention Formula 1, A method of manufacturing a three-dimensional stiffening element from a fusible synthetic powder or from a mixture containing synthetic powder, consisting of applying a fusible synthetic powder or a powder mixture to an auxiliary carrier, molding the resulting powder mixture and sintering it under the influence of heat and pressure using a punch before melting particles, transfer of a stiffener by an auxiliary carrier to the processing of the semifinished product, and connecting it with the latter, especially tees with upper workpieces that distinguish th, so that, in order to simplify production, transfer of the stiffness produced by the element to the processed semi-finished product is carried out first by lifting it onto a heated punch, on which the powder mixture is continued to heat until the particles melt, and then the connection of the molded material is carried out. three-dimensional stiffener with processed semi-finished product. [2] 2. The method according to claim 1, which is also distinguished by the fact that, in order to easily remove the stiffening element from the punch, the working surface of the punch is made of polytetrafluoroethylene. i i / Phie 1 YU
类似技术:
公开号 | 公开日 | 专利标题 SU1510712A3|1989-09-23|Method of producing three-dimensional rigidity element of mouldable synthetic powder or mixture containing synthetic powder US4253891A|1981-03-03|Process and device for the charging, pressing and removing stacked packs from a heat press KR100766391B1|2007-10-11|Container forming apparatus, sheet carrying apparatus, container manufacturing method, and sheet carrying method TWI529048B|2016-04-11|Powder application device and process for manufacturing thermoplastically workable semi-finished products KR101536833B1|2015-07-14|Embossing machine including a platen press DE60025550T2|2006-08-24|Method and apparatus for producing laminated articles made of fibers with laminated plastic film CA1212831A|1986-10-21|Method and a machine for producing reinforcing ordecorative means for shoe upper US4592798A|1986-06-03|Linear deposition apparatus CN204869832U|2015-12-16|A paper feed rubber coating mechanism that is used for flute to mount paper machine US4650538A|1987-03-17|Linear deposition apparatus US3539422A|1970-11-10|Plastic film lining machine US4540608A|1985-09-10|Method of applying a fusible powder CN111016385A|2020-04-17|Method for wrapping spare tire cover plate of automobile trunk KR920008736B1|1992-10-08|Stencil apparatus CN205446309U|2016-08-10|Automatic paster tool CN210553730U|2020-05-19|Wireless adhesive binding machine CA1225826A|1987-08-25|Machine for applying a fused configuration of powderon a shoe substrate SU1031747A1|1983-07-30|Installation for laying-out articles KR200248070Y1|2001-10-18|overlapping apparatus for processing objects in laminating device JPS572722A|1982-01-08|Production of fibered article having laminate sheet US4448630A|1984-05-15|Machine for applying a film DE2841151A1|1980-04-10|Press forming method of corrugated paperboard into curved board - includes preheating before planar board introducing board into hot press, enabling board softening before contacting stationary die CA1189776A|1985-07-02|Method for applying film JPH05285886A|1993-11-02|Cutting device for coupling tape for base material for integrated printed circuit substrate US2003699A|1935-06-04|Roofing product
同族专利:
公开号 | 公开日 JPH0655448B2|1994-07-27| HK1006436A1|1999-02-26| AT109068T|1994-08-15| DE3539573C2|1988-02-11| IN166425B|1990-05-05| US4793882A|1988-12-27| PT83707B|1993-01-29| PT83707A|1986-12-01| JPS62119026A|1987-05-30| DE3539573A1|1987-05-14| CN86107123A|1987-06-03| DE3689996D1|1994-09-01| EP0222220B1|1994-07-27| EP0222220A3|1987-11-25| KR950001987B1|1995-03-08| KR870004803A|1987-06-01| ZA868356B|1987-06-24| EP0222220A2|1987-05-20| BR8605530A|1987-11-17| CN1006692B|1990-02-07| ES2060577T3|1994-12-01|
引用文献:
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申请号 | 申请日 | 专利标题 DE19853539573|DE3539573C2|1985-11-08|1985-11-08| 相关专利
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