Machining and punching equipment for polytetrafluoroethylene flange gasket
By using the centering mechanism and the compression spring positioning plate together, the problem of automatic centering and alignment of workpieces in the punching equipment is solved, which improves punching accuracy and production efficiency and reduces the reliance on manual adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENJIANG CHUNHUAN SEALS GRP CO LTD
- Filing Date
- 2025-02-21
- Publication Date
- 2026-05-19
AI Technical Summary
Existing punching equipment cannot automatically center the workpiece, resulting in processing position errors, increasing reliance on manual labor and reducing production efficiency.
The centering mechanism, including a transverse groove, sliding block, diagonal bar, and limiting component, automatically aligns the workpiece with the pressure plate and punch head driven by a hydraulic cylinder, and ensures workpiece stability by combining a compression spring and a positioning plate.
It enables automatic centering and alignment of workpieces, reduces manual adjustments, improves punching accuracy and product quality, reduces scrap rate, and increases production efficiency.
Smart Images
Figure CN224255527U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flange gasket processing technology, specifically relating to a punching device for processing polytetrafluoroethylene flange gaskets. Background Technology
[0002] Polytetrafluoroethylene (PTFE) flange gaskets are used to seal flange connections and are widely used in chemical, petroleum, natural gas, and power industries, especially in environments requiring corrosion resistance and high-temperature resistance. Punching is a crucial step in the flange gasket manufacturing process, typically used to create through holes and bolt holes. Punching equipment is required for this process.
[0003] Existing punching equipment cannot automatically center the workpiece during processing, which can easily cause offset during punching and result in errors in the processing position. Therefore, operators need to manually adjust the position of each workpiece, which not only increases the reliance on manual labor in the production process, but may also lead to human error and reduce production efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a punching device for processing polytetrafluoroethylene flange gaskets, which can automatically center and align the workpiece with the punching head during the punching process, reduce manual operation, and ensure that the workpiece always maintains the correct position during the punching process, thereby effectively avoiding positional deviation and ensuring the positional accuracy of punching.
[0005] The specific technical solution adopted by this utility model is as follows:
[0006] A punching device for processing polytetrafluoroethylene (PTFE) flange gaskets includes a punching machine, a support fixedly connected to the top of the punching machine, a hydraulic cylinder mounted on the top of the support, a pressure plate fixedly connected to the bottom of the hydraulic cylinder, and a punching head fixedly connected to the bottom of the pressure plate. The device also includes a workpiece table mounted on the top of the punching machine, with a centering mechanism inside the workpiece table. The centering mechanism includes: a transverse groove installed inside the workpiece table; two sliding blocks slidably connected inside the transverse groove; inclined grooves opened inside both sliding blocks; inclined rods fixedly connected to both sides of the bottom of the pressure plate; the inclined rods slidably connected inside the inclined grooves and extending through to the bottom of the workpiece table; limiters installed inside the two sliding blocks; and a punching platform connected inside the transverse groove, located inside the limiters.
[0007] Preferably, a compression spring is fixedly connected to the bottom of the pressure plate, the compression spring is movably disposed on the outer surface of the stamping head, and a positioning plate is fixedly connected to the other end of the compression spring, the positioning plate being movably disposed on the outer surface of the stamping head.
[0008] Preferably, the top of the positioning plate is fixedly connected to two limiting rods, and the two limiting rods respectively extend through to the top of the pressure plate.
[0009] Preferably, both sliding blocks are fixedly connected to protrusions on their front and rear sides, and the inner wall of the transverse groove is provided with guide grooves that cooperate with the protrusions on its front and rear sides.
[0010] Preferably, the bottom of the inner wall of the transverse groove has two movable grooves, and the two inclined rods are slidably connected to the inside of the two movable grooves respectively.
[0011] Preferably, each of the two sliding blocks has a sliding groove inside, and the two limiting members slide inside the two movable grooves respectively. The inner walls of the two sliding grooves are fixedly connected with a telescopic spring, and the other end of the telescopic spring is fixedly connected to the end of the two limiting members respectively.
[0012] The technical effects achieved by this utility model are as follows:
[0013] In this invention, through the coordinated use of the centering mechanism, during the punching process, the shim can be placed on the punching table first. Then, the hydraulic cylinder is operated to push the pressure plate and the punch head to move vertically downwards. When the pressure plate moves vertically downwards, it can drive the two inclined rods to slide downwards, and the two inclined rods slide on the inner wall of the inclined groove inside the two sliding blocks. At the same time, with the auxiliary guidance of the inclined groove and the inclined rods, the two sliding blocks can be squeezed to slide inwards simultaneously inside the transverse groove. When the two sliding blocks slide inwards simultaneously, they can drive the limiting component to slide inwards simultaneously. The limiting component pushes the punching table to move inside the transverse groove to center and align the punch head, thereby achieving automatic centering and alignment. This reduces the reliance on the operator to manually adjust the workpiece position and ensures that the workpiece always maintains the correct position during the punching process, improving the punching accuracy and product quality.
[0014] In this invention, after the stamping table and the workpiece are aligned in the center, when the pressure plate drives the stamping head to move downward to punch holes, the positioning plate will first contact the workpiece and squeeze the compression spring. During punching, the positioning plate will press the workpiece down and position it on the stamping table to prevent the workpiece from shifting during the punching process. The stability of the workpiece can ensure that the result of each punching operation is the same, thereby improving the consistency of the product. Attached Figure Description
[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a three-dimensional sectional view of the workpiece stage of this utility model from the front.
[0017] Figure 3 This is a three-dimensional schematic diagram of the bottom structure of the pressure plate of this utility model;
[0018] Figure 4 This is a three-dimensional cross-sectional view of the sliding block of this utility model.
[0019] The attached diagram lists the components represented by each number as follows:
[0020] 1. Punching machine; 101. Support; 102. Hydraulic cylinder; 103. Pressure plate; 104. Punching head; 2. Workpiece table; 201. Horizontal groove; 202. Sliding block; 203. Inclined groove; 204. Inclined rod; 205. Limiting component; 206. Punching table; 301. Compression spring; 302. Positioning plate; 303. Limiting rod; 401. Protrusion; 402. Guide groove; 5. Movable groove; 601. Sliding groove; 602. Telescopic spring. Detailed Implementation
[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0022] like Figures 1-4 As shown, a punching device for processing polytetrafluoroethylene (PTFE) flange gaskets includes a punching machine 1. A bracket 101 is fixedly connected to the top of the punching machine 1. A hydraulic cylinder 102 is mounted on the top of the bracket 101. A pressure plate 103 is fixedly connected to the bottom of the hydraulic cylinder 102. A punching head 104 is fixedly connected to the bottom of the pressure plate 103. The punching machine 1 also includes a workpiece table 2 mounted on its top. The workpiece table 2 has a centering mechanism inside. The centering mechanism includes: a transverse groove 201 installed inside the workpiece table 2; two sliding blocks 202 slidably connected inside the transverse groove 201; and inclined grooves 203 formed inside each of the two sliding blocks 202. Inclined rods 204 are fixedly connected to both sides of the bottom of the pressure plate 103, and the inclined rods 204 are slidably connected to the inclined grooves 203. The inside of the 3 extends to the bottom of the workpiece table 2. The two sliding blocks 202 are equipped with limiting parts 205. The inside of the transverse groove 201 is connected to the punching table 206, which is located inside the limiting parts 205. With the cooperation of the centering mechanism, the workpiece can be quickly and accurately positioned and centered below the punching head 104, reducing the time for manual adjustment and thus improving production efficiency. Automatic centering and alignment also ensures that the position of each punch is very accurate, which helps to improve the precision and quality of the product, reduce the scrap rate caused by position deviation, and also ensure the neatness and smoothness of the punching edge, improve the appearance quality of the product, and reduce the burden on workers, freeing them from repetitive physical labor.
[0023] like Figures 2-3As shown, a compression spring 301 is fixedly connected to the bottom of the pressure plate 103. The compression spring 301 is movably disposed on the outer surface of the punch head 104. The other end of the compression spring 301 is fixedly connected to a positioning plate 302. The positioning plate 302 is movably disposed on the outer surface of the punch head 104. During the punching process, the workpiece may be displaced due to impact force, vibration and other factors, resulting in inaccurate punching position or defects. By using the compression spring 301 and the positioning plate 302 together, the workpiece can be positioned on the punching table 206, effectively avoiding displacement, maintaining the stability of the workpiece, and ensuring that the punching effect is consistent each time during the punching process.
[0024] like Figures 2-3 As shown, two limiting rods 303 are fixedly connected to the top of the positioning plate 302. The two limiting rods 303 pass through the top of the pressure plate 103 respectively. When the positioning plate 302 is pressed down to position the workpiece, the positioning plate 302 will simultaneously drive the two limiting rods 303 to slide upward. With the auxiliary guidance of the limiting rods 303, the positioning plate 302 can move vertically to prevent the positioning plate 302 from deviating during movement.
[0025] like Figure 2 As shown, protrusions 401 are fixedly connected to the front and rear sides of the two sliding blocks 202. Guide grooves 402 that cooperate with the protrusions 401 are opened on the front and rear sides of the inner wall of the transverse groove 201. When the inclined rod 204 presses the sliding block 202 to move, the sliding block 202 can drive the protrusions 401 to slide on the inner wall of the guide groove 402. This can help limit the sliding block 202 to slide parallel inside the transverse groove 201, thereby more stably pushing the limiting member 205 to center and position the stamping table 206.
[0026] like Figure 2 As shown, two movable grooves 5 are opened at the bottom of the inner wall of the transverse groove 201. Two inclined rods 204 are slidably connected to the inside of the two movable grooves 5 respectively. When the pressure plate 103 drives the two inclined rods 204 to move downward, the inclined rods 204 will pass through the workpiece table 2. Thus, the inclined rods 204 can move flexibly inside the movable grooves 5, so that the inclined rods 204 have sufficient movement space and can squeeze the sliding block 202 to slide flexibly inside the transverse groove 201, preventing the inclined rods 204 from colliding with the workpiece table 2 and causing motion interference when moving.
[0027] like Figure 4As shown, each of the two sliding blocks 202 has a sliding groove 601 inside. The two limiting members 205 slide inside the two movable grooves 5 respectively. The inner walls of the two sliding grooves 601 are fixedly connected with a telescopic spring 602. The other end of the telescopic spring 602 is fixedly connected to the end of the two limiting members 205 respectively. When the limiting member 205 moves to the center on the extrusion stamping table 206, it will simultaneously squeeze the limiting member 205 to slide flexibly inside the sliding groove 601 and squeeze the telescopic spring 602, thereby automatically adjusting the length of the limiting member 205. This is suitable for processing workpieces of different sizes, thereby improving the flexibility of workpiece processing.
[0028] The working principle of this utility model is as follows: During the punching process, the shim can be placed on the punching table 206 first. Then, the hydraulic cylinder 102 is operated to push the pressure plate 103 and the punching head 104 to move vertically downward. When the pressure plate 103 moves vertically downward, it can drive the two inclined rods 204 to slide downward and slide on the inner wall of the inclined groove 203 inside the two sliding blocks 202. At the same time, with the auxiliary guidance of the inclined groove 203 and the inclined rods 204, the two sliding blocks 202 can be squeezed to slide inward inside the transverse groove 201. When the two sliding blocks 202 slide inward at the same time, the limiting member 205 can be driven to slide inward at the same time. Through the limiting member 205, the punching table 206 is pushed to move inward inside the transverse groove 201 to center and align the punching head 104, thereby achieving automatic centering and alignment. This reduces the dependence on the operator to manually adjust the position of the workpiece and ensures that the workpiece always maintains the correct position during the punching process, improving the punching accuracy and product quality.
[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A punching device for processing polytetrafluoroethylene flange gaskets, comprising a punching machine (1), wherein a bracket (101) is fixedly connected to the top of the punching machine (1), a hydraulic cylinder (102) is mounted on the top of the bracket (101), a pressure plate (103) is fixedly connected to the bottom end of the hydraulic cylinder (102), and a punching head (104) is fixedly connected to the bottom of the pressure plate (103), characterized in that: It also includes a workpiece table (2) mounted on the top of the punching machine (1), and a centering mechanism is provided inside the workpiece table (2).
2. The polytetrafluoroethylene flange gasket punching equipment according to claim 1, characterized in that: The centering mechanism includes: a transverse groove (201) installed inside the workpiece table (2); two sliding blocks (202) slidably connected inside the transverse groove (201); inclined grooves (203) opened inside the two sliding blocks (202); inclined rods (204) fixedly connected to both sides of the bottom of the pressure plate (103); the inclined rods (204) slidably connected inside the inclined grooves (203) and extending to the bottom of the workpiece table (2); limiting members (205) installed inside the two sliding blocks (202); and a stamping table (206) connected inside the transverse groove (201), with the stamping table (206) located inside the limiting member (205).
3. The polytetrafluoroethylene flange gasket processing and punching equipment according to claim 2, characterized in that: A compression spring (301) is fixedly connected to the bottom of the pressure plate (103). The compression spring (301) is movably disposed on the outer surface of the stamping head (104). A positioning plate (302) is fixedly connected to the other end of the compression spring (301). The positioning plate (302) is movably disposed on the outer surface of the stamping head (104).
4. The polytetrafluoroethylene flange gasket processing and punching equipment according to claim 3, characterized in that: The top of the positioning plate (302) is fixedly connected to two limiting rods (303), and the two limiting rods (303) respectively penetrate to the top of the pressure plate (103).
5. The polytetrafluoroethylene flange gasket processing and punching equipment according to claim 4, characterized in that: Both sliding blocks (202) are fixedly connected to protrusions (401) on their front and rear sides, and guide grooves (402) that cooperate with the protrusions (401) are provided on the front and rear sides of the inner wall of the transverse groove (201).
6. The polytetrafluoroethylene flange gasket punching equipment according to claim 5, characterized in that: Two movable grooves (5) are provided at the bottom of the inner wall of the transverse groove (201), and the two inclined rods (204) are slidably connected to the inside of the two movable grooves (5).
7. The polytetrafluoroethylene flange gasket punching equipment according to claim 6, characterized in that: The two sliding blocks (202) are respectively provided with sliding grooves (601), and the two limiting members (205) slide in the two movable grooves (5). The inner walls of the two sliding grooves (601) are fixedly connected with telescopic springs (602), and the other end of the telescopic springs (602) is fixedly connected to the ends of the two limiting members (205).