A press for producing polytetrafluoroethylene filter element

Abstract

A press for producing polytetrafluoroethylene filter elements, comprising a bracket, a base arranged on the bracket and provided with a concave hole, a punching device arranged on the upper end of the base and provided with a punching head, a feeding device arranged on the side end of the bracket, and a collecting device arranged on the bracket, wherein the collecting device comprises a collecting box arranged on the bracket and located at the lower end of the base, and an adsorption structure arranged on the side end of the collecting box; the adsorption structure comprises a main body whose side end is connected to the collecting box, an extension tube body arranged on the main body and located at the upper end of the base, and a first adsorption member and a second adsorption member respectively arranged on the side ends of the main body and the extension tube body. The present invention utilizes the structural distribution of the collecting device and the state change of the regulating structure, which not only realizes the full fixation of the processing film or flexible board, but also can simultaneously recycle and collect processing waste, and has the advantages of simple structure, high working efficiency, high yield rate, and good automation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of polytetrafluoroethylene processing equipment, and in particular relates to a press for producing polytetrafluoroethylene filter elements. Background Art

[0002] Polytetrafluoroethylene is a high molecular polymer made from monomer polymerization, which has high cold and heat resistance, and the microporous filter membrane prepared by its unique hydrophobicity and hydrophilicity can achieve high strength and impact resistance of pleated filter element. Pleated filter element generally includes a skeleton and internal filter material, and in order to achieve a higher filtration area, the processing of the filter material generally requires embossing, punching, pleating and other processes, and finally plugging it into the skeleton to form a filter element.

[0003] The document with application publication number CN114562531A discloses a high-strength polytetrafluoroethylene gasket and a punching tool for processing the same. The material picking mechanism includes a connecting bracket, a material picking telescopic rod, a material picking cylinder, a support frame, a pneumatic suction head, a material picking slide, a transmission abutment plate, a slide rail, a transmission telescopic rod and a transmission cylinder; the transmission cylinder drives the material picking slide to move to a specified position through the transmission telescopic rod, and then the material picking cylinder drives the pneumatic suction head to move downward through the material picking telescopic rod to suck up the gasket waste, and finally the pneumatic suction head places the sucked gasket waste on the feeding belt of the feeding mechanism for centralized collection and processing of the gasket waste.

[0004] However, since it is difficult to avoid friction between polytetrafluoroethylene and processing equipment during the punching process, the waste generated by punching is easily adsorbed on the equipment by static electricity, and the adsorption process of the pneumatic suction head of the above-mentioned device is not continuous, so the adsorption is incomplete; and the waste is transported by the transmission belt together with the gasket after processing. In this process, the waste is also easy to re-bond with the gasket, requiring secondary separation. Summary of the invention

[0005] In view of the above-mentioned problems, the purpose of the present invention is to provide a press for the production of polytetrafluoroethylene filter elements. By utilizing the structural distribution of the collecting device and the state change of the adjusting structure, not only the processing membrane or flexible plate can be fully fixed, but also the processing waste can be recovered and collected at the same time. It has the advantages of simple structure, high working efficiency, high yield rate and good automation effect.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] A press for producing polytetrafluoroethylene filter elements, comprising a bracket, a base arranged on the bracket and provided with a concave hole, a punching device arranged at the upper end of the base and provided with a punching head, a feeding device arranged at the side end of the bracket, and a collecting device arranged on the bracket, wherein the collecting device comprises a collecting box arranged on the bracket and located at the lower end of the base, and an adsorption structure arranged on the side end of the collecting box; wherein,

[0008] The adsorption structure includes a main body whose side end is connected to the collection box, an extension tube body arranged on the main body and located at the upper end of the base, and a first adsorption member and a second adsorption member respectively arranged on the side ends of the main body and the extension tube body.

[0009] As a further preferred embodiment of the present invention, it also includes an adjustment structure which is arranged at the side end of the stamping device and moves in the vertical direction within the main tube body and the extension tube body to respectively control the opening / closing state of the first adsorption component and the second adsorption component, and the adjustment structure keeps the first adsorption component open when the stamping device does not act on the base recessed hole.

[0010] As a further preferred embodiment of the present invention, the adjustment structure includes an extended horizontal plate arranged on the side end of the stamping device, and a sealing plate arranged at the lower end of the extended horizontal plate and used for inserting into the main pipe body and the extended pipe body, and the sealing plate is used to close the first adsorption component when the stamping device acts on the base recess.

[0011] As a further preferred embodiment of the present invention, the adjustment structure also includes a groove arranged on the side of the sealing plate close to the extended horizontal plate, and a first screen arranged in the groove; and the side projection area of ​​the groove is larger than the side projection of the air inlet of the second adsorption member.

[0012] As a further preferred embodiment of the present invention, when the first adsorption component is closed, the slot overlaps with the air inlet of the second adsorption component to keep the second adsorption component open.

[0013] As a further preferred embodiment of the present invention, two tracks for connecting with two ends of the sealing plate are provided on the inner side walls of the main tube and the extension tube.

[0014] As a further preferred embodiment of the present invention, a second screen is provided at the connection between the main pipe and the collecting box.

[0015] As a further preferred embodiment of the present invention, the collecting device further comprises a partition plate arranged in the collecting box and parallel to the material conveying direction to form two identical collecting chambers, and each collecting chamber is connected to one of the adsorption structures.

[0016] As a further preferred embodiment of the present invention, the collecting device also includes a brush strip arranged on the bracket and used for cleaning the stamping device.

[0017] As a further preferred embodiment of the present invention, both the first adsorption component and the second adsorption component include an exhaust fan and a controller.

[0018] In summary, the present invention has the following beneficial effects:

[0019] The present invention provides a first adsorption component and a second adsorption component to generate adsorption forces at the lower end and horizontal side end of the material on the base, respectively, so as to fully flatten and fix the material, hold the material in all directions, and ensure that the material does not slide or bend during processing, thereby improving the stability of the material and further accelerating the processing speed.

[0020] The present invention generates adsorption forces at the lower end and the horizontal side end of the material through the first adsorption member and the second adsorption member respectively, so that the generated wafer waste is collected in the collection box under the suction force, which is fast and efficient and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the standby state structure of the present invention.

[0022] Attached Figure 2 It is a partial structural schematic diagram of the adsorption structure of the present invention.

[0023] Attached Figure 3 It is a structural schematic diagram of the regulating structure of the present invention.

[0024] Attached Figure 4 This is a top view of the position structure of the adjustment structure of the present invention.

[0025] Attached Figure 5 It is a schematic top view of part of the structure of the collecting device of the present invention.

[0026] Attached Figure 6 It is a schematic diagram of the punching state position structure of the present invention.

[0027] Description of the drawings: bracket 10, base 11, punching device 12, collecting box 21, partition plate 22, adsorption structure 23, main body 231, extension tube body 232, first adsorption component 233, second adsorption component 234, two tracks 235, second screen 236, bristle strip 24, extension cross plate 31, sealing plate 32, slot 33, first screen 34. DETAILED DESCRIPTION

[0028] The present invention provides a press for producing polytetrafluoroethylene filter elements, comprising a bracket 10, a base 11 arranged on the bracket 10 and provided with a concave hole, a punching device 12 arranged at the upper end of the base 11 and provided with a punching head, a feeding device arranged at the side end of the bracket 10, and a collecting device arranged on the bracket 10, wherein the collecting device comprises a collecting box 21 arranged on the bracket 10 and located at the lower end of the base 11, and an adsorption structure 23 arranged on the side end of the collecting box 21; wherein the adsorption structure 23 comprises a main body 231 whose side end is connected to the collecting box 21, an extension tube body 232 arranged on the main body 231 and located at the upper end of the base 11, and a first adsorption member 233 and a second adsorption member 234 respectively arranged on the side ends of the main body 231 and the extension tube body 232.

[0029] The press provided by the invention is suitable for a film body or a flexible plate body, and is particularly suitable for punching a polytetrafluoroethylene film or a polytetrafluoroethylene flexible plate.

[0030] When the press provided by the present invention is in operation, an automated processing mode is formed by repeated working cycles, and a single working cycle includes:

[0031] (1) The feeding device is used to accurately feed the film or flexible board to be processed onto the base.

[0032] The second function is to use the feeding device to drive the processed materials out of the device after the stamping of the film or flexible board to be processed is completed;

[0033] (2) A punching device for punching holes in the material to be processed that is transported to the base;

[0034] (3) A collecting device, the first function of which is to assist in completely flattening the material after it is conveyed to the base.

[0035] The second function is to absorb and collect the waste materials after the material stamping is completed.

[0036] The press for producing polytetrafluoroethylene filter elements of the present invention has the following beneficial effects:

[0037] 1. When the punching device punches holes in the material, the huge impact force can easily cause the material to bend or deflect, thereby affecting the processing quality of the material and reducing the product qualification rate. The present invention provides a first adsorption member and a second adsorption member to generate adsorption forces at the lower end and horizontal side end of the material on the base, respectively, to fully flatten and fix the material, to hold the material in all directions, to ensure that the material does not slide or bend during processing, thereby improving the stability of the material and further accelerating the processing speed.

[0038] 2. After the punching device is processed, the waste discs generated by the processing cannot be recycled, which increases the production cost, and the waste is easily adsorbed on the equipment or the material after processing under the action of static electricity, affecting the processing effect. The present invention generates adsorption forces at the lower end and horizontal side end of the material through the first adsorption member and the second adsorption member, respectively, and the waste discs are collected in the collection box under the suction force, which is fast and efficient, and reduces labor costs.

[0039] The specific implementation method is described below: Example

[0040] As attached Figure 1-6 As shown, this embodiment provides a press for producing polytetrafluoroethylene filter elements, including a bracket 10, a base 11 arranged on the bracket 10 and provided with a concave hole, a punching device 12 arranged at the upper end of the base 11 and provided with a punching head, a feeding device arranged at the side end of the bracket 10, and a collecting device arranged on the bracket 10, wherein the collecting device includes a collecting box 21 arranged on the bracket 10 and located at the lower end of the base 11, a partition plate 22 arranged in the collecting box 21 and parallel to the material transmission direction for forming two identical collecting chambers, and two adsorption structures 23 arranged on the collecting box 21, each collecting chamber is connected to one of the adsorption structures 23; the adsorption structure 23 includes a main body 231 whose side end is connected to the collecting box 21, an extension tube body 232 arranged on the main body 231 and located at the upper end of the base 11, and a first adsorption member 233 and a second adsorption member 234 respectively arranged on the side ends of the main body 231 and the extension tube body 232.

[0041] Among them, the punching device 12 is located vertically above the base 11, the feeding device should include at least a feeding structure and a discharging structure and are respectively arranged on both sides of the base 11, the collecting box 21 is directly connected to the lower end of the base 11, and the base 11 can completely cover the collecting cavity inside the collecting box 21, and there are two adsorption structures 23, which are respectively arranged on the opposite sides of the collecting box 21 different from the feeding structure and the discharging structure, and the first adsorption member 233 is used to communicate with the collecting cavity to provide suction under the material, and the second adsorption member 234 is located on both sides of the surface of the base 11 to increase the suction on both sides of the material. This arrangement allows the material to be tensioned on the four sides on the horizontal plane through the pulling force of the feeding structure and the discharging structure, and the adsorption of the second adsorption member 234, so that it is fully unfolded on the base 11, and it will not deviate under the action of the punching device 12, ensuring the stability of the punching process.

[0042] Among them, the stamping device 12 at least includes a cylinder, a mounting seat, a telescopic rod, a fixing frame, a punching head and other structures. The above structures are conventional stamping device structures known to technical personnel in this field, so they will not be repeated; the first adsorption component 233 and the second adsorption component 234 have the same structure, and both include at least an exhaust fan and a controller. The exhaust fan is used to generate suction, and the controller is used to control the exhaust fan, and the air inlet of the exhaust fan is connected to the side of the main pipe body 231 and the extension pipe body 232. Furthermore, a filter screen for intercepting waste can be added at the air inlet of the exhaust fan, which will not be repeated in this embodiment.

[0043] This embodiment also includes an adjustment structure arranged at the side end of the punching device 12 and moving in the vertical direction inside the main pipe body 231 and the extension pipe body 232 to respectively control the opening / closing state of the first adsorption member 233 and the second adsorption member 234, the adjustment structure including an extension transverse plate 31 arranged on the side end of the punching device 12, a sealing plate 32 arranged at the lower end of the extension transverse plate 31 and used for inserting into the main pipe body 231 and the extension pipe body 232, a slot 33 arranged on the side of the sealing plate 32 close to the extension transverse plate 31, and a first screen 34 arranged in the slot 33.

[0044] Among them, the sealing plate 32 controls the generation and disappearance of suction at the first adsorption component 233 and the second adsorption component 234 by blocking the air inlet of the exhaust fan in the first adsorption component 233 and the second adsorption component 234. The side projection area of ​​the groove 33 is larger than the side projection of the air inlet of the second adsorption component 234. The purpose is to reduce the suction force affecting the air inlet of the second adsorption component 234 by opening the groove 33, thereby ensuring that the four sides of the material are always flattened during the stamping process. The first screen 34 is used to prevent waste from entering the air inlet of the second adsorption component 234.

[0045] This embodiment further limits the requirements on the specific structure and parameters of the sealing plate 32 and the slot 33 by limiting the functional states of the first adsorption component 233 and the second adsorption component 234, which specifically needs to meet at least the following limiting conditions: First, when the stamping device 12 does not act on the recessed hole of the base 11, the first adsorption component 233 is opened, and the sealing plate 32 does not play a shielding role; Second, when the stamping device 12 acts on the recessed hole of the base 11, the sealing plate 32 blocks the air inlet of the first adsorption component 233 to close the suction force generated by the first adsorption component 233; Third, when the first adsorption component 233 is closed, the slot 33 coincides with the air inlet of the second adsorption component 234 to keep the second adsorption component 234 open.

[0046] The purpose of the first limiting condition is to ensure that the first adsorption member 233 is always working when the punching device 12 is approaching / moving away from the base 11, so as to firmly adsorb the material on the base 11.

[0047] The second limiting condition mentioned above is based on the consideration that when the punching device 12 is punching, the material is subjected to a strong downward force as well as a downward suction force. The superposition of the forces can easily cause the punching holes of the material film or flexible plate with good tensile properties to be easily stretched and deformed, which has a negative effect on the qualified rate of the product. The purpose is to reduce the superposition of downward forces and avoid deformation at the hole forming area.

[0048] The purpose of the third limiting condition is to minimize the influence of the sealing plate 32 on the suction of the second adsorption member 234 during the up and down movement during the operation of the punching device 12, so that the suction of the horizontal edge of the fixed material remains stable.

[0049] In this embodiment, two rails 235 for connecting with the two ends of the sealing plate 32 are provided on the inner side walls of the main tube 231 and the extension tube 232, so as to further improve the movement stability of the sealing plate 32 and improve its shielding effect.

[0050] In this embodiment, a second screen 236 is provided at the connection between the main body 231 and the collecting box 21 to prevent waste from entering the main body 231 and leaving less waste in the collecting box 21; an outlet for discharging waste may be provided at the lower end of the collecting box 21.

[0051] In this embodiment, the collecting device further comprises a brush strip 24 disposed on the bracket 10 and used for cleaning the punching device 12 .

[0052] The number of the brush strips 24 should be determined according to the number of punching heads on the punching device 12, ensuring that the brush strips 24 are distributed on both sides of each punching head, the brush strips 24 are arranged perpendicular to the partition plate 22, and the intervals between adjacent brush strips 24 are equal. The wafer waste adhered to the punching head will pass through the brush strips 24 during the up and down movement of the punching device, and thus be brushed off by the brush strips 24, and further adsorbed and collected by the second adsorbent 234.

[0053] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A press machine for producing polytetrafluoroethylene filter elements, comprising a support (10), a base (11) disposed on the support (10) and provided with a concave hole, a punching device (12) disposed at the upper end of the base (11) and provided with a punching head, a feeding device disposed at a side end of the support (10), and a collecting device disposed on the support (10), characterized in that: The collecting device comprises a collecting box (21) arranged on the bracket (10) and located at the lower end of the base (11), and an adsorption structure (23) arranged on the side end of the collecting box (21); wherein: The adsorption structure (23) comprises a main body (231) whose side end is connected to the collection box (21), an extension tube (232) arranged on the main body (231) and located at the upper end of the base (11), and a first adsorption member (233) and a second adsorption member (234) respectively arranged on the side ends of the main body (231) and the extension tube (232); It also includes an adjustment structure which is arranged at the side end of the punching device (12) and moves in the main tube (231) and the extension tube (232) in a vertical direction to respectively control the opening / closing state of the first adsorption member (233) and the second adsorption member (234), and the adjustment structure keeps the first adsorption member (233) open when the punching device (12) does not act on the concave hole of the base (11); The regulating structure comprises an extended transverse plate (31) arranged on the side end of the punching device (12), a sealing plate (32) arranged at the lower end of the extended transverse plate (31) and used for inserting into the main body (231) and the extended tube body (232), a slot (33) arranged on the side of the sealing plate (32) close to the extended transverse plate (31), and a first screen (34) arranged in the slot (33); the sealing plate (32) is used for sealing the first adsorption member (233) when the punching device (12) acts on the recessed hole of the base (11); the side projection area of ​​the slot (33) is larger than the side projection area of ​​the air inlet of the second adsorption member (234); and when the first adsorption member (233) is closed, the slot (33) overlaps with the air inlet of the second adsorption member (234) to keep the second adsorption member (234) open.

2. A press for producing polytetrafluoroethylene filter elements according to claim 1, characterized in that: Two rails (235) for connecting to two ends of the sealing plate (32) are provided on the inner side walls of the main tube (231) and the extension tube (232).

3. A press for producing polytetrafluoroethylene filter elements according to claim 1, characterized in that: A second screen (236) is provided at the connection between the main pipe (231) and the collection box (21).

4. A press for producing polytetrafluoroethylene filter elements according to claim 1, characterized in that: The collecting device further comprises a partition plate (22) arranged in the collecting box (21) and parallel to the material transmission direction so as to form two identical collecting chambers, and each collecting chamber is in communication with one of the adsorption structures (23).

5. A press for producing polytetrafluoroethylene filter elements according to claim 1, characterized in that: The collecting device also includes a brush strip (24) arranged on the bracket (10) and used for cleaning the punching device (12).

6. A press for producing polytetrafluoroethylene filter elements according to claim 1, characterized in that: The first adsorption member (233) and the second adsorption member (234) both comprise an exhaust fan and a controller.

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