Quick switching and positioning device for cold header die

Abstract

The utility model relates to cold header technical field discloses a quick switching and positioning device of cold header die, including two chutes, both sides of two the chute opposite all are fixedly connected with fixed plate, both sides of two the fixed plate front all are fixedly connected with motor, both sides of two the motor output all are fixedly provided with first gear, both sides of two the first gear all are not complete gear, both sides of two the first gear adjacent all are engaged to have second gear, both sides of two the second gear front all are fixedly connected with threaded rod, both sides of two the threaded rod all are rotatably connected between the chute, both sides of two the chute are provided with female die body. In the utility model, the first gear drives the second gear rotation, can control second gear rotation amplitude and intermittence, and further realizes the intermittent fixed amplitude rotation of threaded rod, and the intermittent fixed distance movement of clamping assembly driven by threaded rod, which makes the material of completing last process can be quickly positioned to next mould.

Description

Technical Field

[0001] This utility model relates to the field of cold heading machine technology, and in particular to a quick switching and positioning device for cold heading machine molds. Background Technology

[0002] Cold heading machine molds are key tooling for metal forming in cold heading machines. They can ensure product precision, minimize part dimensional deviations, improve production efficiency, enable automated continuous production, reduce production costs, increase material utilization, and reduce cutting waste.

[0003] The existing cold heading machine molds lack a fixed-distance movement control mechanism during material transfer, which prevents the material that has completed the previous process from moving quickly and accurately to the next mold, thus affecting product quality and production efficiency. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a rapid switching and positioning device for cold heading machine molds, which aims to improve the problem that materials that have completed the previous process cannot be quickly positioned to the next mold in cold heading machine molds.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid switching and positioning device for a cold heading machine mold, comprising two slides, each slide having a fixed plate fixedly connected to an opposite side, a motor fixedly connected to the front side of each fixed plate, a first gear fixedly mounted on the output end of each motor, both first gears being incomplete gears, a second gear meshing with an adjacent side of each first gear, a threaded rod fixedly connected to the front side of each second gear, both threaded rods being rotatably connected to the slides, a female mold body disposed between the two slides, a male mold assembly disposed on the top of the female mold body, two clamping assemblies threadedly connected to the surface of the threaded rods, a fixing assembly disposed at the bottom of the female mold body, and a positioning assembly disposed inside the female mold body.

[0006] Preferably, the fixing component includes four fastening slots, all four fastening slots are fixedly connected to the female mold body, each of the four fastening slots is threaded with a fastener, and each of the four fasteners is threaded with a fixing frame.

[0007] Preferably, each of the two clamping components includes two fixing blocks, both fixing blocks are threadedly connected to two threaded rods, both fixing blocks are slidably connected to two sliding grooves, and telescopic members are fixedly connected to adjacent sides of the two fixing blocks, and grippers are fixedly connected to the output ends of the two telescopic members.

[0008] Preferably, the positioning component includes two positioning posts, both of which are slidably connected to the female mold body, and both of which are fixedly connected to a return spring on their surfaces. Both of the return springs are fixedly connected to the female mold body, and an ejector pin assembly is provided between the two positioning posts.

[0009] Preferably, the male mold assembly includes a male mold body, which is located on top of the female mold body, and a punch is fixedly connected to the bottom of the male mold body.

[0010] Preferably, the ejector pin assembly includes a connecting block located on the surfaces of two positioning pins. An ejector pin body is slidably connected inside the connecting block. The ejector pin body is located inside the female mold body. The connecting block is located inside the female mold body. A reset tension spring is fixedly connected inside the connecting block. The reset tension spring is fixedly connected to the ejector pin body.

[0011] Preferably, all four fastening grooves are threaded grooves, all four fasteners are bolts, and the thread patterns of the four fasteners and the four fastening grooves are matched.

[0012] Preferably, both of the telescopic components are cylinders, and both of the grippers are semi-circular.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the first gear drives the second gear to rotate, and the rotation amplitude and interval of the second gear can be controlled, thereby realizing the intermittent fixed-amplitude rotation of the threaded rod. The threaded rod drives the clamping assembly to move intermittently at a fixed distance, which enables the material that has completed the previous process to be quickly positioned to the next mold, thus solving the problem that the material that has completed the previous process cannot be quickly positioned to the next mold.

[0015] 2. In this utility model, when removing the ejector pin assembly, the positioning column is pulled and the fastener is loosened to remove the ejector pin assembly. When installing a new ejector pin assembly, the positioning column is pulled again and the fastener is tightened to install the ejector pin assembly, which solves the problem of inconvenient ejector pin replacement. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a rapid switching and positioning device for cold heading machine molds proposed in this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A;

[0018] Figure 3 This is a schematic diagram of the fastening groove of a quick switching and positioning device for a cold heading machine mold proposed in this utility model;

[0019] Figure 4This is a schematic diagram of the positioning column of a quick switching and positioning device for cold heading machine molds proposed in this utility model.

[0020] Legend:

[0021] 1. Female mold body; 2. Fixing assembly; 201. Fastening groove; 202. Fastener; 203. Fixing frame; 3. Clamping assembly; 301. Fixing block; 302. Telescopic component; 303. Gripper; 4. Positioning assembly; 401. Positioning pin; 402. Return spring; 5. Ejector pin assembly; 501. Connecting block; 502. Ejector pin body; 503. Return tension spring; 6. Male mold assembly; 601. Male mold body; 602. Punch; 7. Slide groove; 8. Fixing plate; 9. Motor; 10. First gear; 11. Second gear; 12. Threaded rod. Detailed Implementation

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figure 1 and Figure 2 An embodiment of this utility model provides a quick switching and positioning device for a cold heading machine mold, comprising two slides 7, with fixed plates 8 fixedly connected to opposite sides of the two slides 7, motors 9 fixedly connected to the front sides of the two fixed plates 8, and first gears 10 fixedly installed at the output ends of the two motors 9. The two first gears 10 are incomplete gears, and second gears 11 are meshed and connected to adjacent sides of the two first gears 10. Threaded rods 12 are fixedly connected to the front sides of the two second gears 11, and the two threaded rods 12 are rotatably connected to the slides 7. A female mold body 1 is provided between the two slides 7, a male mold assembly 6 is provided on the top of the female mold body 1, two clamping assemblies 3 are threadedly connected to the surface of the threaded rods 12, a fixing assembly 2 is provided at the bottom of the female mold body 1, and a positioning assembly 4 is provided inside the female mold body 1.

[0024] Specifically, motor 9 drives the first gear 10 to rotate. Since the first gear 10 is an incomplete gear, it intermittently meshes with the second gear 11 during rotation. When the toothed part of the first gear 10 meshes with the second gear 11, it drives the second gear 11 to rotate. When the toothless part of the first gear 10 rotates past the second gear 11, the second gear 11 stops rotating.

[0025] In this way, the rotation amplitude and intermittent rotation of the second gear 11 are controlled. The intermittent fixed-amplitude rotation of the second gear 11 is transmitted to the threaded rod 12, causing it to rotate intermittently. The rotation of the threaded rod 12 drives the fixed block 301, which is threaded to it, to move intermittently at a fixed distance under the guidance of the slide groove 7. This solves the problem that the material that has completed the previous process cannot be quickly positioned to the next mold.

[0026] Reference Figure 3 and Figure 4 The fixing component 2 includes four fastening slots 201, all of which are fixedly connected to the female mold body 1. Fasteners 202 are threaded inside the four fastening slots 201, and fixing frames 203 are threaded on the surface of the four fasteners 202.

[0027] Specifically, the fastening groove 201 is a threaded groove, and the internal threaded connection is a fastener 202 as a bolt. The fastener 202 is threadedly connected to the fixing frame 203. This design allows the fixing frame 203 to be connected to the female mold body 1 through the fastener 202, which facilitates the fixing and disassembly of the ejector pin assembly 5 installed inside.

[0028] Reference Figure 1 Both clamping components 3 include two fixing blocks 301, both fixing blocks 301 are threadedly connected to two threaded rods 12, both fixing blocks 301 are slidably connected to two sliding grooves 7, and telescopic members 302 are fixedly connected to adjacent sides of both fixing blocks 301, and grippers 303 are fixedly connected to the output ends of both telescopic members 302.

[0029] Specifically, the telescopic component 302 is fixedly connected to the adjacent side of the fixed block 301, and the output end of the cylinder fixed block 301 is fixedly connected to the semi-circular gripper 303, so that the gripper 303 can move linearly under the drive of the threaded rod 12 and the guide of the slide groove 7, and the opening and closing of the gripper 303 is controlled by the cylinder to achieve the clamping and transfer of materials.

[0030] Reference Figure 4 The positioning component 4 includes two positioning posts 401, both of which are slidably connected to the female mold body 1. Both positioning posts 401 are fixedly connected to a return spring 402, and both return springs 402 are fixedly connected to the female mold body 1. An ejector pin assembly 5 is provided between the two positioning posts 401.

[0031] Specifically, a reset spring 402 is fixedly connected to the surface of the positioning post 401, and the other end of the reset spring 402 is fixed to the female mold body 1. The positioning post 401 plays a positioning and limiting role in the installation and disassembly of the ejector assembly 5, while the reset spring 402 ensures that the positioning post 401 can automatically reset after operation, providing positioning for the installation of the ejector assembly 5, making the installation quick and convenient.

[0032] Reference Figure 1 The male mold assembly 6 includes a male mold body 601, which is located on top of the female mold body 1, and a punch 602 is fixedly connected to the bottom of the male mold body 601.

[0033] Specifically, a punch 602 is fixedly connected to the bottom of the male mold body 601. During cold heading, the male mold body 601 moves downward under the action of external power, and the punch 602 presses the material in the female mold body 1 to form the material.

[0034] Reference Figure 3 and Figure 4 The ejector pin assembly 5 includes a connecting block 501, which is located on the surfaces of two positioning pins 401. An ejector pin body 502 is slidably connected inside the connecting block 501. The ejector pin body 502 is located inside the female mold body 1. A reset spring 503 is fixedly connected inside the connecting block 501. The reset spring 503 is fixedly connected to the ejector pin body 502.

[0035] Specifically, the connecting block 501 is located on the surface of the two positioning pins 401 and inside the mother mold body 1. The ejector pin body 502 is slidably connected inside the connecting block 501. The reset spring 503 is fixedly connected inside the connecting block 501. The reset spring 503 is connected to the ejector pin body 502. After cold heading, the reset spring 503 pushes the ejector pin body 502 to push the molded part out of the mother mold body 1 so that the material can be transferred later.

[0036] Reference Figure 3 All four fastening slots 201 are threaded slots, and all four fasteners 202 are bolts, with the thread patterns of the four fasteners 202 matching those of the four fastening slots 201.

[0037] Specifically, the four fastening grooves 201 are symmetrically distributed on the mother mold body 1, and the thread patterns of the four fastening grooves 201 and the four fasteners 202 are matched in shape and pitch.

[0038] Reference Figure 1 Both telescopic components 302 are cylinders, and the two grippers 303 are semi-circular.

[0039] Specifically, the telescopic component 302 is a cylinder that can perform telescopic movements and control the grippers 303 to open and close, thereby grasping and releasing materials. The two grippers 303 are designed as semicircles, which have a larger contact area with the materials and conform to the shape of the materials.

[0040] Working principle: Motor 9 drives the first gear 10 to rotate. Since the first gear 10 is an incomplete gear, it meshes with the second gear 11 intermittently during rotation. When the toothed part of the first gear 10 meshes with the second gear 11, it drives the second gear 11 to rotate. When the toothless part of the first gear 10 passes the second gear 11, the second gear 11 stops rotating. This achieves control over the rotation amplitude and intermittency of the second gear 11.

[0041] The intermittent fixed-amplitude rotation of the second gear 11 is transmitted to the threaded rod 12 fixedly connected to it, causing the threaded rod 12 to rotate intermittently. The intermittent fixed-amplitude rotation of the threaded rod 12 drives the fixed block 301 to move intermittently at a fixed distance under the guidance of the slide groove 7. The fixed block 301 drives the telescopic member 302 and the gripper 303 connected to it to move synchronously.

[0042] When the material completes the previous process, the telescopic component 302 drives the gripper 303 to close. The semi-circular gripper 303 fits against the surface of the material and holds the material. Then, under the continued drive of the threaded rod 12, the gripper 303 moves the material intermittently at a fixed distance. The interval time is consistent with the process time, thus solving the problem that the material that has completed the previous process cannot be quickly positioned to the next mold.

[0043] When it is necessary to replace the ejector pin assembly 5, first pull the positioning post 401 in the positioning assembly 4. The positioning post 401 overcomes the elastic force of the return spring 402 and slides in the female mold body 1, thereby releasing the limit on the connecting block 501. Loosen the fastener 202 so that the fastener 202 is separated from the fastening groove 201. The fixing frame 203 loses the fastening effect of the fastener 202, so that the fixing frame 203 together with the ejector pin assembly 5 inside can be removed from the female mold body 1.

[0044] When installing the new ejector pin assembly 5, pull the positioning pin 401 again to compress the return spring 402, place the new ejector pin assembly 5 into the female mold body 1, and align the hole on the fixing frame 203 with the fastening groove 201. At this time, release the positioning pin 401. Under the elastic force of the return spring 402, the positioning pin 401 returns to its original position and inserts into the connecting block 501, thus achieving the initial positioning of the ejector pin assembly 5. Tighten the fastener 202 into the fastening groove 201, and fix the fixing frame 203 to the female mold body 1 through the threaded connection, thereby solving the problem of inconvenient ejector pin replacement.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick switching and positioning device for a cold header die, comprising two sliding grooves (7), characterized in that: Two opposite sides of the chute (7) are fixedly connected with the fixed plate (8), the front side of the two fixed plates (8) is fixedly connected with the motor (9), the output end of the two motors (9) is fixedly provided with the first gear (10), the two first gears (10) are not complete gears, the adjacent side of the two first gears (10) is meshedly connected with the second gear (11), the front side of the two second gears (11) is fixedly connected with the threaded rod (12), the threaded rod (12) is rotatably connected between the two chutes (7), the female mold body (1) is arranged between the two chutes (7), the top of the female mold body (1) is provided with the male mold assembly (6), the surface of the threaded rod (12) is threadedly connected with the two clamping assemblies (3), the bottom of the female mold body (1) is provided with the fixed assembly (2), and the inside of the female mold body (1) is provided with the positioning assembly (4).

2. A quick switching and positioning device for a cold header die according to claim 1, characterized in that: The fixed assembly (2) comprises four fastening grooves (201), the four fastening grooves (201) are fixedly connected between the female mold body (1), the four fastening grooves (201) are threadedly connected with the fastener (202) in the inside, and the surface of the fastener (202) is threadedly connected with the fixed frame (203).

3. The quick switching and positioning device of a cold header die according to claim 1, characterized in that: The two clamping assemblies (3) each comprise two fixed blocks (301), the two fixed blocks (301) are threadedly connected between the two threaded rods (12), the two fixed blocks (301) are slidably connected between the two chutes (7), the adjacent side of the two fixed blocks (301) is fixedly connected with the telescopic piece (302), and the output end of the telescopic piece (302) is fixedly connected with the clamping jaw (303).

4. The quick switching and positioning device of a cold header die according to claim 1, characterized in that: The positioning assembly (4) comprises two positioning columns (401), the two positioning columns (401) are slidably connected between the female mold body (1), the surface of the two positioning columns (401) is fixedly connected with the reset spring (402), the two reset springs (402) are fixedly connected between the female mold body (1), and the two positioning columns (401) are provided with the thimble assembly (5).

5. A quick switching and positioning device for die of cold header as claimed in claim 1 wherein: The male mold assembly (6) comprises a male mold body (601), the male mold body (601) is located at the top of the female mold body (1), and the bottom of the male mold body (601) is fixedly connected with the punch rod (602).

6. A quick switching and positioning device for die of cold header as claimed in claim 4 wherein: The thimble assembly (5) comprises a connecting block (501), the connecting block (501) is located on the surface of the two positioning columns (401), the inside of the connecting block (501) is slidably connected with the thimble body (502), the thimble body (502) is located in the inside of the female mold body (1), the connecting block (501) is located in the inside of the female mold body (1), the inside of the connecting block (501) is fixedly connected with the reset tension spring (503), and the reset tension spring (503) is fixedly connected with the thimble body (502).

7. The quick switching and positioning device of a cold header die according to claim 2, characterized in that: The four fastening grooves (201) are thread grooves, the four fasteners (202) are bolts, and the thread grooves of the four fasteners (202) and the four fastening grooves (201) are matched.

8. The quick switching and positioning device of a cold header die according to claim 3, characterized in that: Both of the telescopic members (302) are air cylinders, and both of the clamping jaws (303) are semicircular.

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