A terminal riveting device for a diaphragm

Abstract

The application relates to a terminal riveting device for a diaphragm, which comprises a punch body, a fixed die, a movable die and a positioning piece, the movable die is arranged on a driving head of the punch body, the fixed die is arranged on the punch body, the positioning piece comprises a positioning block, a limiting block and a return spring, the limiting block is arranged on the fixed die, a limiting groove is arranged on the limiting block, the limiting groove is used for clamping cooperation with the diaphragm, the positioning block is slidably connected to the fixed die in the vertical direction, a plurality of positioning grooves for placing terminals are arranged on the positioning block, and the return spring is used for keeping the groove bottom height of the positioning groove higher than the height of the upper end surface of the fixed die. The application has the effect of improving the position precision of terminal riveting to the diaphragm.

Description

Technical Field

[0001] This application relates to the field of automotive transmission manufacturing, and more particularly to a terminal riveting device for a diaphragm. Background Technology

[0002] SBR is styrene-butadiene rubber, which has good thermoplasticity and elasticity. Membrane switches made of SBR diaphragms and terminals play a crucial role in the manufacture of automotive transmissions.

[0003] Currently, the installation and assembly of diaphragms and terminals are often done by using a punch press for riveting. Since multiple terminals need to be riveted onto the diaphragm, the position of the terminals relative to the diaphragm must be precise. However, if the terminals are placed manually, errors in the position of the terminals and the diaphragm can lead to poor contact between the diaphragm and the terminals, resulting in poor quality of the membrane switch. Utility Model Content

[0004] To improve the accuracy of terminal riveting onto the diaphragm, this application provides a terminal riveting device for the diaphragm.

[0005] The terminal riveting device for a diaphragm provided in this application adopts the following technical solution:

[0006] A terminal riveting device for a diaphragm includes a punch press body, a fixed die, a moving die, and a positioning element. The moving die is disposed on the drive head of the punch press body, and the fixed die is disposed on the punch press body. The positioning element includes a positioning block, a limiting block, and a return spring. The limiting block is disposed on the fixed die and has a limiting groove for engaging with the diaphragm. The positioning block is slidably connected to the fixed die in a vertical direction and has several positioning grooves for placing terminals. The return spring keeps the bottom height of the positioning groove higher than the upper surface of the fixed die.

[0007] By adopting the above technical solution, dual positioning of the diaphragm and terminal is achieved through the positioning groove on the positioning block and the limiting groove on the limiting block. The snap-fit ​​of the limiting groove on the diaphragm and the fixing of the terminal by the positioning groove work together to provide a precise reference for subsequent riveting, reduce the inconsistency problem caused by positioning deviation, improve the basic riveting accuracy, and lay the foundation for improving yield.

[0008] Optionally, the fixed mold is provided with a sorting component for sorting terminals in a plurality of positioning slots. The sorting component includes a sorting block and a sorting spring. The sorting block is slidably connected to the fixed mold in a direction close to or away from the positioning block. The end of the sorting block facing the terminal has a sorting slot. One end of the terminal is used to abut against the bottom of the sorting slot. The sorting spring is used to keep the sorting block away from the positioning block.

[0009] By adopting the above technical solution, the terminals are automatically aligned by the mechanical structure, ensuring that multiple terminals are in a neat and consistent state before riveting; the elastic force of the sorting spring makes the sorting process stable and adaptive, reducing manual intervention and further improving product yield.

[0010] Optionally, the finishing component further includes a retaining rod, which is rotatably connected to the fixed mold. The retaining rod is used to allow the finishing block to overcome the elastic force of the finishing spring and to abut the finishing block against the side wall of the positioning block.

[0011] By adopting the above technical solution, the working stability of the maintenance rod reinforcement component is maintained. During the terminal arrangement stage, the maintenance rod can lock the position of the arrangement block to ensure the continuous calibration effect of the arrangement groove on the terminal and avoid the fluctuation of the arrangement spring force affecting the terminal positioning accuracy. After the terminal arrangement is completed, the operator removes the maintenance rod from the arrangement block, and the arrangement block moves away from the positioning block under the action of the arrangement spring, reducing the interference of the arrangement block during the riveting process.

[0012] Optionally, the bottom of the limiting groove and the end of the limiting block facing the positioning block are provided with a clearance slope.

[0013] By adopting the above technical solution, during the riveting process, the height of the positioning block will decrease under the stamping of the moving mold. At this time, part of the diaphragm is still in the limiting groove of the limiting block, and the diaphragm as a whole will deform. The traditional right-angle structure will cause the diaphragm to jam or be scratched. The avoidance slope increases the deformable distance of the diaphragm, reduces the jamming and scratching of the diaphragm, protects the integrity of the diaphragm, and reduces the defect rate caused by physical damage.

[0014] Optionally, the moving mold is provided with an extension plate for placing materials.

[0015] By adopting the above technical solutions, material management in the production process can be optimized, providing temporary storage space for films, terminals, or semi-finished products to be riveted, and reducing the time spent by operators to retrieve materials.

[0016] Optionally, the moving die includes a moving die base, a punch, and a mounting component. The mounting component is used to mount the moving die base to the drive head of the punch press body. The punch is disposed on the moving die base, and the end face of the punch facing the fixed die has a riveting groove corresponding to the limiting groove. The cross-section of the riveting groove is M-shaped.

[0017] By adopting the above technical solution, the terminal is a piercing terminal. During the riveting process, the pin of the terminal will pass through the diaphragm and enter the riveting groove. The pin will bend through the M-shaped riveting groove to form a staple-like structure, thus completing the riveting operation between the terminal and the diaphragm.

[0018] Optionally, the bottom of the riveting groove is rounded for transition.

[0019] By adopting the above technical solution, the rounded corner transition of the groove bottom avoids scratches or indentations on the terminal pins during bending, protects the integrity of the pin surface, prevents the decrease in conductivity or weakening of structural strength due to pin damage, and the rounded corner transition can further improve the reliability of the terminal riveting on the diaphragm.

[0020] Optionally, the mounting component includes two mounting plates, a mounting bolt, and a mounting nut. The mounting plates are disposed on the moving mold base, and the two mounting plates are located on opposite sides of the punch press drive head. The tail of the mounting nut passes through the mounting plate and the punch press drive head in sequence, and the mounting nut is threadedly connected to the tail of the mounting bolt.

[0021] By adopting the above technical solution, a rigid connection between the moving die and the punch body is achieved, avoiding punch displacement caused by vibration during the riveting process. The double-sided fixing structure distributes the force, ensuring the stability of the drive terminal riveting to the diaphragm, reducing positioning errors caused by loose installation, and guaranteeing product consistency in mass production.

[0022] Optionally, the fixed mold is provided with a cutting blade for cutting excessively long films and terminals. The cutting blade is located between the positioning block and the sorting block, and the cutting edge of the cutting blade abuts against the positioning block.

[0023] By adopting the above technical solution, while the terminal is embedded in the diaphragm, the cutting blade simultaneously removes the excessively long diaphragm or terminal, eliminating the need for subsequent correction of the diaphragm and terminal and improving work efficiency.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The limiting groove and positioning groove achieve dual positioning of the diaphragm and the terminal, and the arrangement ensures that the terminals are neat and consistent, which improves the positioning accuracy of the diaphragm and the terminal and improves the quality of subsequent riveting operations;

[0026] 2. The M-shaped riveting groove on the punch allows for easy piercing of the terminal and riveting to the diaphragm, improving the bonding quality between the diaphragm and the terminal;

[0027] 3. By using a cutting tool to cut excessively long diaphragms and terminals during the riveting process, the length of the process connection is reduced, the difficulty of manual operation is lowered, and the structural integrity of the diaphragms and terminals is protected. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the terminal riveting device for the diaphragm.

[0029] Figure 2 yes Figure 1 A schematic diagram showing the installation relationship between the moving die and the punch press body.

[0030] Figure 3 yes Figure 2 The enlarged view at point A in the middle is used to show the structure of the riveting groove on the punch.

[0031] Figure 4 yes Figure 1 A schematic diagram of the middle mold.

[0032] Figure 5 yes Figure 4 A sectional view of the center mold, used to show the positioning components.

[0033] Reference numerals in the attached drawings: 1. Punch press body; 2. Fixed die; 21. Receiving groove; 3. Moving die; 31. Moving die base; 32. Punch; 321. Riveting groove; 33. Mounting component; 331. Mounting plate; 332. Mounting bolt; 333. Mounting nut; 4. Positioning component; 41. Positioning block; 411. Positioning groove; 42. Limiting block; 421. Limiting groove; 422. Avoidance slope; 43. Return spring; 5. Finishing component; 51. Finishing block; 511. Finishing groove; 52. Finishing spring; 53. Holding rod; 54. Placement groove; 6. Extension plate; 7. Cutting blade. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0035] This application discloses a terminal riveting device for a diaphragm. (Refer to...) Figure 1 and Figure 2 A terminal riveting device for a diaphragm includes a punch body 1, a fixed die 2, a moving die 3, and a positioning component 4. The moving die 3 includes a moving die base 31, a punch 32, and a mounting component 33. The mounting component 33 includes two mounting plates 331, two mounting bolts 332, and two mounting nuts 333. The mounting plates 331 are vertically arranged and fixedly mounted on the upper end surface of the moving die base 31. The two mounting plates 331 are located on both sides of the drive head of the punch body 1. The length direction of the mounting bolts 332 is parallel to the distribution direction of the two mounting plates 331. The tail of the mounting bolts 332 passes through the two mounting plates 331 and the drive head of the punch body 1. The two mounting nuts 333 correspond to the two mounting bolts 332 and are threadedly connected to the mounting bolts 332. The mounting nuts 333 are pressed against the mounting plates 331.

[0036] Reference Figure 2 and Figure 3The punch 32 is in the shape of a vertical rod. The upper end of the punch 32 is fixedly mounted on the lower end face of the moving die base 31. The lower end face of the punch 32 has four riveting grooves 321. The four riveting grooves 321 are evenly distributed on the lower end face of the punch 32. The cross-section of the riveting grooves 321 is M-shaped. The bottom of the riveting grooves 321 is rounded. The fixed die 2 is located below the punch 32 and is fixedly mounted on the punch press body 1. The positioning element 4 is mounted on the fixed die 2 and is used to position the diaphragm and the terminal.

[0037] Reference Figure 4 and Figure 5 The positioning component 4 includes a positioning block 41, a limiting block 42, and a return spring 43. A receiving groove 21 is formed on the upper surface of the fixed mold 2, extending vertically. The positioning block 41 is slidably connected to the receiving groove 21 in the vertical direction. The return spring 43 is located within the receiving groove 21 and is vertically positioned. One end of the return spring 43 is fixedly set at the bottom of the receiving groove 21, and the other end is fixedly set on the positioning block 41. Four positioning grooves 411 are formed on the upper surface of the positioning block 41, and each of the four positioning grooves 411 corresponds to one of the four riveting grooves 321. The positioning groove 411 extends vertically and penetrates both side walls of the positioning block 41 along its width. The positioning groove 411 is used to place the terminal. The return spring 43 is in an uncompressed state. The height of the positioning groove 411 is higher than the upper end face of the fixed mold 2. The limiting block 42 is fixedly set on the upper end face of the fixed mold 2. The upper end face of the limiting block 42 has a limiting groove 421. The limiting groove 421 extends vertically and is used to place the diaphragm. A clearance slope 422 is provided between the bottom of the limiting groove 421 and the side wall of the limiting block 42 facing the positioning block 41.

[0038] Reference Figure 4 and Figure 5The fixed mold 2 is also provided with a sorting component 5, which is used to adjust the length of the terminal. The sorting component 5 includes a sorting block 51, a sorting spring 52, and a retaining rod 53. The sorting block 51 is located on the side of the positioning block 41 away from the limiting block 42. The fixed mold 2 has a placement groove 54 that extends vertically. The sorting block 51 slides along the direction from the positioning block 41 to the limiting block 42 and is connected to the placement groove 54. The sorting block 51 has four sorting grooves 511, which correspond to four positioning grooves 411. The bottom of the sorting groove 511 is used to abut one end of the terminal. The sorting spring 52... The length direction is parallel to the sliding direction of the sorting block 51. The sorting spring 52 is located in the placement groove 54. One end of the sorting spring 52 is fixedly set on the side wall of the placement groove 54, and the other end of the sorting spring 52 is fixedly set on the sorting block 51. When the sorting spring 52 is in a state of no force, the sorting spring 52 keeps the sorting block 51 away from the positioning block 41. The maintaining rod 53 is located on the side of the sorting block 51 away from the positioning block 41. The maintaining rod 53 is rotatably connected to the fixed mold 2 along the vertical axis. The maintaining rod 53 is used for the sorting block 51 to overcome the tension of the sorting spring 52 and abut against the side wall of the positioning block 41.

[0039] Reference Figure 4 and Figure 5 An extension plate 6 is provided on the outer side wall of the moving mold 3. The extension plate 6 is used to place the finished workpiece or semi-finished material. A cutting blade 7 is also provided on the moving mold 3. The cutting blade 7 is located between the positioning block 41 and the sorting block 51. The cutting blade 7 is fixedly set on the upper end face of the moving mold 3. The cutting edge of the cutting blade 7 faces upward and abuts against the side wall of the positioning block 41.

[0040] The implementation principle of the terminal riveting device for a diaphragm according to an embodiment of this application is as follows: The operator places the terminal in the positioning groove 411 of the positioning block 41, and the arranging component 5 makes the terminal neatly arranged. Then, the diaphragm is placed in the limiting groove 421 of the limiting block 42. At this time, the diaphragm covers the terminal. The driving head of the punch body 1 is started, and the driving head causes the moving mold 3 to move. The punch 32 causes the pin of the terminal to pierce the diaphragm. The terminal that pierces the diaphragm bends in the riveting groove 321, thus fixing it on the diaphragm. Finally, the pressure of the driving head of the punch body 1 is greater than the elastic force of the return spring 43, causing the positioning block 41 to move toward the bottom of the receiving groove 21. The diaphragm and the terminal move relative to the cutting blade 7, and the cutting blade 7 completes the cutting of the excess diaphragm and terminal.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A terminal riveting device for a diaphragm, characterized in that: The punch press includes a punch press body (1), a fixed die (2), a moving die (3), and a positioning component (4). The moving die (3) is mounted on the drive head of the punch press body (1). The fixed die (2) is mounted on the punch press body (1). The positioning component (4) includes a positioning block (41), a limiting block (42), and a return spring (43). The limiting block (42) is mounted on the fixed die (2). A limiting groove (421) is provided on the limiting block (42). The limiting groove (421) is used to engage with a diaphragm. The positioning block (41) slides vertically and is connected to the fixed die (2). The positioning block (41) has several positioning grooves (411) for placing terminals. The return spring (43) is used to keep the bottom height of the positioning groove (411) higher than the height of the upper surface of the fixed die (2).

2. The terminal riveting device for a diaphragm according to claim 1, characterized in that: The fixed mold (2) is provided with a sorting component (5) for sorting terminals in a plurality of positioning slots (411). The sorting component (5) includes a sorting block (51) and a sorting spring (52). The sorting block (51) is slidably connected to the fixed mold (2) in a direction close to or away from the positioning block (41). The sorting block (51) has a sorting slot (511) at one end facing the terminal. One end of the terminal is used to abut against the bottom of the sorting slot (511). The sorting spring (52) is used to keep the sorting block (51) away from the positioning block (41).

3. The terminal riveting device for a diaphragm according to claim 2, characterized in that: The finishing component (5) also includes a retaining rod (53), which is rotatably connected to the fixed mold (2). The retaining rod (53) is used to help the finishing block (51) overcome the elastic force of the finishing spring (52) and abut the finishing block (51) against the side wall of the positioning block (41).

4. The terminal riveting device for a diaphragm according to claim 1, characterized in that: The bottom of the limiting groove (421) and the end of the limiting block (42) facing the positioning block (41) are provided with a clearance slope (422).

5. The terminal riveting device for a diaphragm according to claim 1, characterized in that: The moving mold (3) is provided with an extension plate (6) for placing materials.

6. The terminal riveting device for a diaphragm according to claim 1, characterized in that: The moving die (3) includes a moving die base (31), a punch (32) and a mounting component (33). The mounting component (33) is used to mount the moving die base (31) onto the drive head of the punch press body (1). The punch (32) is disposed on the moving die base (31). The end face of the punch (32) facing the fixed die (2) is provided with a riveting groove (321) corresponding to the limiting groove (421). The cross section of the riveting groove (321) is M-shaped.

7. The terminal riveting device for a diaphragm according to claim 6, characterized in that: The bottom of the riveting groove (321) is rounded.

8. The terminal riveting device for a diaphragm according to claim 6, characterized in that: The mounting component (33) includes two mounting plates (331), mounting bolts (332), and mounting nuts (333). The mounting plates (331) are disposed on the moving mold base (31). The two mounting plates (331) are located on opposite sides of the punch press drive head. The tail of the mounting nut (333) passes through the mounting plate (331) and the punch press drive head in sequence. The mounting nut (333) is threaded to the tail of the mounting bolt (332).

9. A terminal riveting device for a diaphragm according to claim 2, characterized in that: The fixed mold (2) is provided with a cutting blade (7) for cutting excessively long films and terminals. The cutting blade (7) is located between the positioning block (41) and the sorting block (51), and the cutting edge of the cutting blade (7) abuts against the positioning block (41).

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