Punching machine for polytetrafluoroethylene gasket production

Abstract

The utility model relates to the technical field of polytetrafluoroethylene gasket production equipment, in particular to a punching machine for polytetrafluoroethylene gasket production, and aims to solve the problem of low efficiency caused by manual die replacement of traditional equipment. The punching machine comprises a front conveying table, a working table and a rear conveying table which are arranged in a straight line. A die sliding base is installed on the workbench in a sliding mode, a plurality of die units are arranged on the die sliding base, and each die unit is provided with a plurality of die holes. A punching unit capable of moving up and down is installed on the upper top frame corresponding to the upper top frame and driven by a second telescopic device to conduct punching operation. The die sliding seat is driven by the first telescopic device to slide left and right, so that automatic switching of different die units is achieved, continuous production is completed in cooperation with the punching unit, and machine halt for die changing is not needed. According to the utility model, the automation level of PTFE gasket production is improved, the production efficiency and the product quality are obviously improved, the production cost is reduced, and the requirement of quick conversion of products of multiple specifications is met.

Description

Technical Field

[0001] This utility model relates to the technical field of polytetrafluoroethylene gasket production equipment, specifically to a punching machine for polytetrafluoroethylene gasket production. Background Technology

[0002] The information disclosed in the background section of this utility model is intended only to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer widely used in various fields due to its excellent chemical stability, heat resistance, low coefficient of friction, and electrical insulation properties. PTFE gaskets are one of the most commonly used sealing components in industry, used to prevent leakage of fluids or gases between connected parts.

[0004] The punching machine used in the production of PTFE gaskets usually refers to equipment that can punch PTFE material that has been pre-formed or calendered into sheets according to specific sizes and shapes.

[0005] To obtain PTFE gaskets of different specifications and shapes, corresponding punching dies need to be designed. Traditional punching machines rely on fixed dies for operation. Every time a different specification or shape of gasket is changed, the operator must manually disassemble and install a new die. This process is not only time-consuming and labor-intensive, but the frequent downtime for die changes also seriously affects the overall efficiency of the production line. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a punching machine for producing polytetrafluoroethylene gaskets that is suitable for mass production and can automatically change molds.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A punching machine for producing polytetrafluoroethylene gaskets includes a front conveyor table, a worktable, and a rear conveyor table, wherein the front conveyor table and the rear conveyor table are arranged on the same straight line.

[0009] A mold slide block that can slide left and right is slidably installed above the worktable. The mold slide block is driven by a first telescopic device. Two or more mold units are installed on the mold slide block. The mold unit is provided with a number of mold holes arranged in an array. The mold unit is matched between the front conveyor table and the rear conveyor table under the driving action of the first telescopic device.

[0010] A sliding top frame is provided above the slide block. Two or more punching units corresponding to the mold unit and capable of vertical movement are installed on the top frame. The punching units are driven by a corresponding second telescopic device. Each punching unit is provided with several punching blades corresponding to the mold hole.

[0011] Preferably, the worktable is provided with slide rails or grooves for sliding in conjunction with the mold slide and the top frame.

[0012] Preferably, the top frame is provided with a guide groove or optical axis that cooperates with the up-and-down movement of the punching unit.

[0013] Preferably, the top frame and the mold slide are fixedly connected as a whole, and the mold unit corresponds vertically to the corresponding punching unit.

[0014] Preferably, the punching unit includes a punching table, and the punching blades are all mounted on a mounting plate, which is fixedly mounted on the punching table.

[0015] Preferably, the punching cutter includes an outer ring cutter and an inner ring cutter; the die hole includes an inner cutting groove and an outer cutting groove.

[0016] Preferably, a first sliding plug is slidably installed between the inner ring cutter and the outer ring cutter, and the first sliding plug is fitted with a first spring;

[0017] A second sliding plug is slidably installed inside the inner ring cutter, and the second sliding plug is engaged with a second spring.

[0018] This utility model includes, but is not limited to, the following beneficial effects:

[0019] This invention enables automatic mold unit replacement, reducing the need for manual intervention and improving the level of production automation. By using a first telescopic device to drive the mold slide left and right, and a second telescopic device to drive the punching unit up and down, rapid and accurate mold replacement and punching operations can be achieved.

[0020] Because automatic mold changing eliminates the need for manual mold replacement during machine downtime, production preparation time is significantly reduced, improving the overall efficiency of the production line. Furthermore, the array of die holes and punching blades allows for the punching of multiple gaskets in a single operation, further enhancing productivity.

[0021] This invention allows for the installation of two or more mold units and corresponding punching units, enabling it to adapt to the production needs of PTFE gaskets of different specifications and shapes, thus increasing the equipment's versatility and application range.

[0022] In this invention, the punch cutter is mounted on a detachable mounting plate for easy replacement and maintenance; at the same time, the sliding plug and spring design between the inner and outer ring cutters also helps to reduce maintenance frequency and simplify the maintenance process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the workbench structure;

[0025] Figure 3 This is a schematic diagram of the punching and cutting blade.

[0026] The reference numerals in the attached drawings are as follows: 100, worktable; 101, slide rail; 102, slide block; 103, first telescopic device; 104, mold unit; 105, mold hole; 1051, outer cutting groove; 1052, inner cutting groove; 106, second telescopic device; 107, punching table; 108, punching unit; 1081, outer cutting blade; 1082, inner cutting blade; 1083, first sliding plug; 1084, second sliding plug; 1085, first spring; 1086, second spring; 200, front conveyor table; 300, rear conveyor table; 400, top frame; 401, guide groove. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figures 1 to 3 A punching machine for producing polytetrafluoroethylene gaskets is presented, including a front conveyor 200, a worktable 100 and a rear conveyor 300, wherein the front conveyor 200 and the rear conveyor 300 are arranged on the same straight line.

[0029] A mold slide block 102 that can slide left and right is slidably installed above the workbench 100. The mold slide block 102 is driven by a first telescopic device 103. Two or more mold units 104 are installed on the mold slide block 102. The mold unit 104 is provided with a plurality of mold holes 105 arranged in an array. Under the driving action of the first telescopic device 103, the mold unit 104 is correspondingly matched between the front conveyor table 200 and the rear conveyor table 300.

[0030] A sliding top frame 400 is provided above the slide block 102. Two or more punching units 108 corresponding to the mold unit 104 and capable of vertical movement are installed on the top frame 400. The punching units 108 are driven by a corresponding second telescopic device 106. Each punching unit 108 is provided with several punching blades corresponding to the mold hole 105.

[0031] The array of die holes 105 and punching blades can punch the polytetrafluoroethylene (PTFE) base material conveyed in the front-to-back direction, thereby enabling the punching of large quantities of PTFE gaskets. When it is necessary to change the die, the corresponding die unit 104 can be driven between the front conveyor table 200 and the rear conveyor table 300 by the first telescopic device 103, and then the corresponding second telescopic device 106 can be activated to drive the corresponding punching unit 108 to perform punching, thereby realizing automatic die changing.

[0032] The sliding of the mold slide 102 and the top frame 400 is achieved by the following structure: the worktable 100 is provided with a slide rail 101 or slide groove to cooperate with the sliding of the mold slide 102 and the top frame 400.

[0033] To improve the guiding nature of the vertical movement of the punching unit 108, the top frame 400 is provided with a guide groove 401 or optical axis (not shown in the figure) that cooperates with the vertical movement of the punching unit 108.

[0034] Another structure can realize the replacement of mold unit 104 and corresponding punching unit 108 in this application. The specific structure is as follows: the top frame 400 and the mold slide 102 are fixedly connected as one unit. The mold unit 104 and the corresponding punching unit 108 correspond vertically. The two slide synchronously to realize the replacement. This scenario is easy to implement and will not be described in detail here.

[0035] To improve the installation and replacement efficiency of the punching unit 108, the punching unit 108 includes a punching table 107, and the punching blades are all mounted on a mounting plate, which is fixedly mounted on the punching table 107.

[0036] The structure of the punching cutter is as follows: it includes an outer ring cutter and an inner ring cutter. Correspondingly, the die hole 105 includes an outer cutting groove 1051 and an inner cutting groove 1052 adapted to the outer ring cutter and the inner ring cutter.

[0037] To prevent the punched PTFE gasket from getting stuck in the cutter, a first sliding plug 1083 is slidably installed between the inner and outer ring cutters, and the first sliding plug 1083 is fitted with a first spring 1085; a second sliding plug 1084 is slidably installed inside the inner ring cutter, and the second sliding plug 1084 is fitted with a second spring 1086. Of course, to facilitate subsequent transport and separation of the PTFE gasket, the inner and outer ring cutters are provided with small notches, allowing the PTFE gasket to continue being transported along with the base material, and then peeled off later (this is a further improvement and will not be elaborated further here), preventing the punched PTFE gasket from getting stuck in the die hole 105.

[0038] In summary, the punching machine comprises a front conveyor 200, a worktable 100, and a rear conveyor 300, arranged in a straight line. A mold slide 102 is slidably mounted on the worktable 100, on which multiple mold units 104 are provided, each mold unit 104 equipped with several mold holes 105. Correspondingly, the upper top frame 400 is equipped with a punching unit 108 that can move up and down, driven by a second telescopic device 106 to perform the punching operation.

[0039] The advantage of this punching machine lies in the fact that the mold slide 102 is driven to slide left and right by the first telescopic device 103, enabling automatic switching between different mold units 104. This, combined with the punching unit 108, allows for continuous production without the need for machine downtime for mold changes. Simultaneously, to ensure punching accuracy, the top frame 400 is equipped with a guide structure, and the punching blade adopts an inner and outer ring cutting blade design, along with spring-assisted first and second sliding plugs 1084 to prevent finished product jamming. Furthermore, the design of the punching table 107 and the mounting plate simplifies the maintenance and replacement process of the punching blade.

[0040] Therefore, this punching machine improves the automation level of PTFE gasket production, significantly enhances production efficiency and product quality, reduces production costs, and adapts to the need for rapid conversion between multiple product specifications.

[0041] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0042] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A punching and cutting machine for producing polytetrafluoroethylene gaskets, characterized in that: It includes a front conveyor, a worktable, and a rear conveyor, with the front and rear conveyors arranged on the same straight line. A mold slide block that can slide left and right is slidably installed above the worktable. The mold slide block is driven by a first telescopic device. Two or more mold units are installed on the mold slide block. The mold unit is provided with a number of mold holes arranged in an array. The mold unit is matched between the front conveyor table and the rear conveyor table under the driving action of the first telescopic device. A sliding top frame is provided above the slide block. Two or more punching units corresponding to the mold unit and capable of vertical movement are installed on the top frame. The punching units are driven by a corresponding second telescopic device. Each punching unit is provided with several punching blades corresponding to the mold hole.

2. The punching machine for producing polytetrafluoroethylene gaskets as described in claim 1, characterized in that: The workbench is provided with slide rails or grooves for sliding in conjunction with the mold slide and the top frame.

3. The punching machine for producing polytetrafluoroethylene gaskets as described in claim 1, characterized in that: The top frame is provided with a guide groove or optical axis to cooperate with the up and down movement of the punching unit.

4. The punching machine for producing polytetrafluoroethylene gaskets as described in claim 1, characterized in that: The top frame and the mold slide are fixedly connected as one unit, and the mold unit corresponds vertically to the corresponding punching unit.

5. The punching machine for producing polytetrafluoroethylene gaskets as described in claim 1, characterized in that: The punching unit includes a punching table, and the punching blades are all mounted on a mounting plate, which is fixedly mounted on the punching table.

6. The punching machine for producing polytetrafluoroethylene gaskets as described in claim 1, characterized in that: The punching cutter includes an outer ring cutter and an inner ring cutter; the die hole includes an inner cutting groove and an outer cutting groove.

7. The punching machine for producing polytetrafluoroethylene gaskets as described in claim 6, characterized in that: A first sliding plug is slidably installed between the inner ring cutter and the outer ring cutter, and the first sliding plug is fitted with a first spring. A second sliding plug is slidably installed inside the inner ring cutter, and the second sliding plug is fitted with a second spring.

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