Stamping die stable in stamping

Abstract

The utility model relates to the field of stamping dies, in particular to a stamping die stable in stamping, which comprises a male die and a female die matched with each other, the female die is provided with a plurality of guide columns, the guide columns penetrate through the male die, a pre-tightening clamping piece is arranged between the male die and the female die, and the pre-tightening clamping piece is used for clamping a workpiece to be stamped. While it is ensured that stamping is conducted smoothly, a good positioning effect on the workpiece is achieved, so that the stability of the workpiece in the stamping process is improved, the possibility that the workpiece shakes or deviates in the stamping process is reduced, and the stamping effect is improved.

Description

Technical Field

[0001] The present application relates to the field of stamping dies, and in particular to a stamping die with stable stamping. Background Art

[0002] Nowadays, in the production process of some parts or products, stamping process is often involved to make the workpiece quickly. During stamping, the stamping die plays an extremely important role. The stamping template usually includes a punch and a die that fit each other. The die is installed on the workbench with the cavity facing upward; the punch is located above the die and is raised and lowered by a drive (such as a hydraulic cylinder, a cylinder or a screw). At the same time, the die is also fixed with a number of vertically extending guide columns, which are inserted into the punch so that the punch can slide relative to the guide columns.

[0003] When in use, the workpiece is placed on the upper end of the die so that the workpiece covers the cavity of the die. Then the driving part controls the punch to press down, and then the workpiece is stamped into the cavity to complete the stamping process of the workpiece. Finally, the punch is reset and the workpiece is taken out.

[0004] During the stamping process of the workpiece, the workpiece is prone to shaking or shifting at the moment the punch contacts the workpiece, which leads to instability in the stamping process of the workpiece, low forming effect of the workpiece, and reduced qualification rate of product or part production. Utility Model Content

[0005] In order to improve the stability of the workpiece during the stamping process and improve the workpiece stamping effect, the present application provides a stamping die with stable stamping.

[0006] The present application provides a stamping die with stable stamping, which adopts the following technical solution:

[0007] A stamping die with stable stamping comprises a punch and a die that fit each other, the die being provided with a plurality of guide posts that penetrate the punch, a pre-tightening clip being provided between the punch and the die, and the pre-tightening clip being used to clamp a workpiece to be stamped.

[0008] By adopting the above technical solution, the workpiece is placed on the upper end of the die so that the workpiece covers the cavity of the die. Then the pre-tightening clip is abutted against the workpiece to pre-position the workpiece. Finally, the workpiece is stamped into shape by the punch to complete the stamping process of the workpiece. While ensuring the smooth progress of stamping, the workpiece is also better positioned, thereby improving the stability of the workpiece during the stamping process, reducing the possibility of shaking or offsetting the workpiece during the stamping process, and improving the stamping effect.

[0009] Optionally, the pre-tightening clip is provided with a plurality of push springs, and two ends of the push springs are respectively connected to the pre-tightening clip and the punch.

[0010] By adopting the above technical solution, under the action of the push spring, as the punch gradually approaches the workpiece, the push spring will be gradually compressed, and the clamping effect of the pre-tightening clip on the workpiece will be better. This ensures that the workpiece can be stamped and formed smoothly, and also improves the stability of the workpiece stamping.

[0011] Optionally, the pre-tightening clip is equipped with a plurality of guide rods, the guide rods are passed through and slidably connected to the punch, and the push spring is coaxially sleeved on the guide rods.

[0012] By adopting the above technical solution, the guide rod can guide and reinforce the movement of the pre-tightening clip, making the pre-tightening clip more stable when it abuts against the workpiece; and the guide rod can also support the push spring, reducing the possibility of bending of the push spring and ensuring that the push spring is in a better use state.

[0013] Optionally, the guide rod passes through the punch, and the guide rod is threadedly connected with a limit nut, and the limit nut is located on a side of the punch away from the pre-tightening clip.

[0014] By adopting the above technical solution, the limit nut can limit the position of the guide rod, reduce the possibility of the guide rod completely slipping off the punch, and thus improve the stability of the installation of the pre-tightening clip on the punch, ensuring the clamping effect of the pre-tightening clip on the workpiece; rotating the limit nut can also adjust the position of the guide rod, thereby facilitating the adjustment of the compression amount of the push spring and the use state of the pre-tightening clip, so that the pre-tightening clip presents different clamping forces at the moment of pressing against the workpiece.

[0015] Optionally, the limiting nut is detachably mounted with a hand-held cap, and the hand-held cap is formed with a hand-held portion for easy gripping.

[0016] By adopting the above technical solution, when in use, the handgrip is held and the handgrip cap is rotated, thereby achieving the purpose of controlling the rotation of the limit nut, making it easier to adjust the limit nut.

[0017] Optionally, the hand-held cap is made of elastic material, the hand-held cap is provided with a receiving groove, the hand-held cap is sleeved on the end of the limiting nut facing the punch, so that the hand-held cap is clamped between the limiting nut and the punch; a skeleton is embedded in the hand-held cap, the skeleton is sleeved and matched with the limiting nut, and the skeleton extends into the hand-held part.

[0018] By adopting the above technical solution, when the punch is raised and lowered, and the limit nut intermittently collides with the punch, the hand-held cap can buffer the limit nut, reduce the possibility of damage to the limit nut, and reduce the noise during the collision. In addition, the skeleton can increase the rigidity of the hand-held part, so that when the hand-held part is held to control the rotation of the limit nut, the control effect is better.

[0019] Optionally, a card joint is formed on one end of the guide rod facing the pre-tightening clip, and a plurality of card slots are provided on the side of the pre-tightening clip facing away from the die. The card slots are side openings, and the openings of at least two of the card slots are in different directions, and the card joint is card-connected in the card slot.

[0020] By adopting the above technical solution, during installation, it is only necessary to connect the card connector to the card slot, then sleeve multiple guide rods with push springs and pass them through the punch, and then tighten the limit nut, thereby realizing the installation of the pre-tightening clip, making the installation and disassembly process of the pre-tightening clip more convenient and easy to replace the pre-tightening clip.

[0021] Optionally, the side wall of the guide rod is provided with a limiting groove extending along the length direction thereof, and the convex mold is formed with a clamping block clamped in the limiting groove.

[0022] By adopting the above technical solution, the clamping block limits the rotation of the guide rod by clamping the limit groove, so that during the rotation of the limit nut, the possibility of deflection of the guide rod can be reduced, thereby improving the stability of the preload clip installation.

[0023] Optionally, a pressure-stabilizing channel is provided at the lower portion of the die, which passes through the die, and the pressure-stabilizing channel connects the cavity on the die with the outside.

[0024] By adopting the above technical solution, when the punch is punching the workpiece into the cavity, the pressure-stabilizing channel provided can facilitate the discharge of air in the cavity to the outside, thereby reducing the possibility of the workpiece being obstructed by air pressure during the punching process and improving the punching effect of the workpiece.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] Before stamping, the pre-tightening clip is placed against the workpiece to pre-position the workpiece. This ensures that the stamping is carried out smoothly and has a better positioning effect on the workpiece, thereby improving the stability of the workpiece during the stamping process, reducing the possibility of the workpiece shaking or deflecting during the stamping process, and improving the stamping effect.

[0027] When the limiting nut intermittently collides with the punch, the hand-held cap can buffer the limiting nut, reduce the possibility of damage to the limiting nut, and reduce the noise during the collision. In addition, the skeleton can increase the rigidity of the hand-held part, so that when the hand-held part is held to control the rotation of the limiting nut, the control effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a stamping die with stable stamping according to an embodiment of the present application;

[0029] Figure 2It is a schematic diagram of a partial cross-sectional structure of a male mold in an embodiment of the present application;

[0030] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of part A;

[0031] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of part B.

[0032] Explanation of the reference numerals: 1. Punch; 11. Block; 2. Die; 21. Guide column; 22. Pressure stabilizing channel; 3. Preload clip; 31. Guide rod; 311. Limit nut; 312. Hand-held cap; 3121. Frame; 313. Hand-held part; 314. Card joint; 315. Limit groove; 32. Card groove; 4. Push spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The present application embodiment discloses a stamping die with stable stamping. Figure 1 A stamping die with stable stamping includes a punch 1 and a die 2. When installing, the die 2 can be installed on a workbench. The punch 1 is arranged above the die 2. When in use, the punch 1 is driven to rise and fall by a driving member, and the driving member can be set as a hydraulic cylinder, a cylinder or a screw, preferably a hydraulic cylinder.

[0035] Reference Figure 1 It should be noted that a cavity is formed at the upper end of the die 2, and a punch is formed at the lower part of the punch 1, so that the punch 1 can be adapted to the die 2. A pressure stabilizing channel 22 is formed at the lower part of the die 2, one end of the pressure stabilizing channel 22 is connected to the die cavity from the bottom of the cavity, and the other end is connected to the outside of the die 2.

[0036] The die 2 is fixed with a plurality of vertically extending guide posts 21, which penetrate the punch 1 so that the punch 1 can be lifted and lowered along the guide posts 21. The lifting and lowering of the punch 1 is guided by the guide posts 21, thereby improving the stability of the punch 1 during the lifting and lowering process and improving the accuracy of the stamping process.

[0037] Reference Figure 1 At the same time, a horizontally extending pre-tightening clip 3 is provided between the punch 1 and the die 2, and an avoidance notch is provided in the middle of the pre-tightening clip 3, so that the punch on the punch 1 can pass through the inside of the avoidance notch. The pre-tightening clip 3 is equipped with a plurality of vertically extending guide rods 31, and the upper ends of the guide rods 31 are penetrated and slidably connected to the punch 1. The pre-tightening clip 3 is provided with a plurality of push springs 4, and the plurality of push springs 4 are respectively provided on the plurality of guide rods 31 in a one-to-one correspondence, and the push springs 4 are sleeved on the guide rods 31, and the two ends of the push springs 4 are respectively connected to the pre-tightening clip 3 and the punch 1.

[0038] When in use, the workpiece is placed on the upper end of the die 2 so that the workpiece covers the cavity of the die 2. Then the pre-tightening clip 3 is abutted against the workpiece to pre-position the workpiece. Secondly, the driving member controls the punch 1 to press down, and the workpiece is stamped into the cavity to complete the stamping process of the workpiece. Finally, the punch is reset and the workpiece is taken out. While ensuring the smooth progress of the stamping, it also has a better positioning effect on the workpiece, thereby improving the stability of the workpiece during the stamping process, reducing the possibility of the workpiece shaking or deflecting during the stamping process, and improving the stamping effect.

[0039] Moreover, under the action of the push spring 4, as the punch 1 gradually approaches the workpiece, the push spring 4 will be gradually compressed, and the clamping effect of the pre-tightening clip 3 on the workpiece will be better. Thus, while ensuring that the workpiece can be smoothly stamped and formed, the stability of the workpiece stamping can also be improved. The guide rod 31 can guide and reinforce the movement of the pre-tightening clip 3, so that the pre-tightening clip 3 is more stable when it abuts against the workpiece; and the guide rod 31 can also support the push spring 4, reduce the possibility of bending of the push spring 4, and ensure that the push spring 4 is in a better use state.

[0040] In addition, when the punch 1 is punching the workpiece into the cavity, the pressure-stabilizing channel 22 provided can facilitate the discharge of air in the cavity to the outside, thereby reducing the possibility of the workpiece being hindered by air pressure during the punching process and improving the punching effect of the workpiece.

[0041] In other embodiments, the pre-tightening clip 3 may also be connected to the die 2, so that a traction spring is installed on the die 2 to pull the pre-tightening clip 3 to maintain a downward movement tendency, so that the pre-tightening clip 3 can also pre-position the workpiece placed on the die 2.

[0042] Reference Figure 2 and Figure 3 The guide rod 31 is set through the punch 1, and the upper end of the guide rod 31 is threadedly connected to the limit nut 311, and the limit nut 311 abuts against the upper end surface of the punch 1. The limit nut 311 can limit the position of the guide rod 31, reduce the possibility of the guide rod 31 completely sliding off the punch 1, and thus improve the stability of the installation of the pre-tightening clip 3 on the punch 1, and ensure the clamping effect of the pre-tightening clip 3 on the workpiece. At this time, the push spring 4 is set to abut the pre-tightening clip 3 and the punch 1 at both ends.

[0043] Moreover, during actual use, rotating the limit nut 311 can also adjust the position of the guide rod 31, thereby facilitating adjustment of the compression amount of the push spring 4 and the use state of the pre-tightening clip 3, so that the pre-tightening clip 3 presents different clamping forces at the moment of clamping the workpiece.

[0044] Reference Figure 2 and Figure 3 At the same time, the limiting nut 311 is provided with a hand-held cap 312, and the hand-held cap 312 is made of an elastic material, such as rubber or silicone. The hand-held cap 312 is provided with a receiving groove, and the hand-held cap 312 is sleeved on the end of the limiting nut 311 facing the punch 1, so that the bottom of the receiving groove on the hand-held cap 312 is clamped between the limiting nut 311 and the punch 1. A hand-held portion 313 is formed on the side of the hand-held cap 312, and specifically, the hand-held portion 313 is set as a horn-shaped structure. The hand-held cap 312 is embedded with a skeleton 3121, and the skeleton 3121 is sleeved and matched with the limiting nut 311, and the skeleton 3121 extends into the hand-held portion 313.

[0045] When in use, the hand-held portion 313 is held and the hand-held cap 312 is rotated, thereby achieving the purpose of controlling the rotation of the limit nut 311, making it easier to adjust the limit nut 311. In addition, when the punch 1 is raised or lowered, the limit nut 311 intermittently collides with the punch 1, and the hand-held cap 312 can buffer the limit nut 311, reduce the possibility of damage to the limit nut 311, and reduce the noise during the collision. In addition, the skeleton 3121 can increase the rigidity of the hand-held portion 313, so that when the hand-held portion 313 is held to control the rotation of the limit nut 311, the control effect is better.

[0046] Reference Figure 3 and Figure 4 After long-term use, in order to facilitate the replacement of the pre-tightening clip 3. A clamping joint 314 is formed at one end of the guide rod 31 facing the pre-tightening clip 3, and the clamping joint 314 can be set to a rectangular or circular shape. A plurality of clamping grooves 32 are set on the side of the pre-tightening clip 3 away from the die 2. The clamping grooves 32 are set to be side openings, and the openings of at least two clamping grooves 32 are in different directions. The clamping joint 314 is clamped in the clamping groove 32. The side wall of the guide rod 31 is provided with a limiting groove 315 extending along its own length direction, and the convex mold 1 is formed with a clamping block 11 clamped in the limiting groove 315.

[0047] During installation, it is only necessary to clamp the clamping joint 314 to the clamping slot 32, then sleeve the plurality of guide rods 31 with the push spring 4 and pass through the punch 1, and then tighten the limiting nut 311, thereby achieving the installation of the pre-tightening clip 3, making the installation and removal process of the pre-tightening clip 3 more convenient and facilitating the replacement of the pre-tightening clip 3. In addition, setting the openings of the plurality of clamping slots 32 in different directions can improve the positioning effect of the pre-tightening clip 3 after the pre-tightening clip 3 is installed, and reduce the possibility of the pre-tightening clip 3 slipping off.

[0048] The clamping block 11 is engaged with the limiting groove 315 to limit the rotation of the guide rod 31, so that the possibility of deflection of the guide rod 31 can be reduced during the rotation of the limiting nut 311, thereby improving the stability of the installation of the preload clip 3.

[0049] In other embodiments, the guide rod 31 may be arranged to penetrate and be threadedly connected to the pre-tightening clip 3, so as to achieve a detachable connection between the guide rod 31 and the pre-tightening clip 3 in this way.

[0050] The implementation principle of a stamping die with stable stamping according to an embodiment of the present application is as follows: when in use, the workpiece is placed on the upper end of the die 2 so that the workpiece covers the cavity of the die 2. The pre-tightening clip 3 is then brought into contact with the workpiece to pre-position the workpiece. Secondly, the punch 1 is pressed downward by the driving member to stamp the workpiece into the cavity to complete the stamping process of the workpiece. Finally, the punch is reset and the workpiece is taken out. While ensuring that the stamping is carried out smoothly, the workpiece also has a better positioning effect, thereby improving the stability of the workpiece during the stamping process, reducing the possibility of the workpiece shaking or deflecting during the stamping process, and improving the stamping effect.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stamping die with stable stamping, comprising a punch (1) and a die (2) adapted to each other, wherein the die (2) is provided with a plurality of guide posts (21), and the guide posts (21) are penetrated through the punch (1), characterized in that: A pre-tightening clamp (3) is provided between the punch (1) and the die (2), and the pre-tightening clamp (3) is used to clamp a workpiece to be punched.

2. A stamping die with stable stamping according to claim 1, characterized in that: The pre-tightening clip (3) is provided with a plurality of push springs (4), and the two ends of the push springs (4) are respectively connected to the pre-tightening clip (3) and the punch (1).

3. A stamping die with stable stamping according to claim 2, characterized in that: The pre-tightening clip (3) is provided with a plurality of guide rods (31), the guide rods (31) are passed through and slidably connected to the punch (1), and the push spring (4) is coaxially sleeved on the guide rods (31).

4. A stamping die with stable stamping according to claim 3, characterized in that: The guide rod (31) passes through the punch (1), and the guide rod (31) is threadedly connected to a limit nut (311), wherein the limit nut (311) is located on a side of the punch (1) facing away from the pre-tightening clip (3).

5. A stamping die with stable stamping according to claim 4, characterized in that: The limiting nut (311) is detachably mounted with a hand-held cap (312), and the hand-held cap (312) is formed with a hand-held portion (313) that is easy to hold.

6. A stamping die with stable stamping according to claim 5, characterized in that: The hand-held cap (312) is made of an elastic material. The hand-held cap (312) is provided with a receiving groove. The hand-held cap (312) is sleeved on one end of the limiting nut (311) facing the punch (1), so that the hand-held cap (312) is clamped between the limiting nut (311) and the punch (1). A skeleton (3121) is embedded in the hand-held cap (312). The skeleton (3121) is sleeved and matched with the limiting nut (311). The skeleton (3121) extends into the hand-held portion (313).

7. A stamping die with stable stamping according to claim 4, characterized in that: A clamping joint (314) is formed on one end of the guide rod (31) facing the pre-tightening clip (3); a plurality of clamping grooves (32) are provided on a side of the pre-tightening clip (3) facing away from the die (2); the clamping grooves (32) are arranged to be side-opened, and the openings of at least two of the clamping grooves (32) are in different directions; the clamping joint (314) is clamped in the clamping grooves (32).

8. A stamping die with stable stamping according to claim 7, characterized in that: The side wall of the guide rod (31) is provided with a limiting groove (315) extending along the length direction of the guide rod (31), and the convex mold (1) is formed with a clamping block (11) clamped in the limiting groove (315).

9. A stamping die with stable stamping according to any one of claims 1 to 8, characterized in that: The lower part of the female mold (2) is provided with a pressure stabilizing channel (22) penetrating the female mold (2), and the pressure stabilizing channel (22) connects the cavity on the female mold (2) with the outside.

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