Back punching device of hexagon nut forming machine

Abstract

The utility model relates to the technical field of back punching devices, and discloses a back punching device of a hexagon nut forming machine, which comprises a die holder body, an ejector rod body and a back punching assembly, the ejector rod body is arranged in the die holder body, a first spring is fixedly connected in the ejector rod body, the first spring is in contact with the die holder body, and the back punching assembly is arranged in the die holder body. And a rear punching assembly for moving the ejector rod body is arranged at the right end of the die holder body. The ejector rod body is aligned with the corresponding groove of the die holder body and is inserted into the corresponding groove, and then the mounting frame is aligned with the corresponding groove of the die holder body and is inserted into the corresponding groove of the die holder body, so that the clamping block is conveniently clamped in the groove of the die holder body through the arc end of the clamping block, and the mounting frame is mounted in the die holder body; at the moment, the first spring is in contact with the mounting frame, so that the ejector rod body is prevented from falling off from the interior of the die holder body, the ejector rod body does not need to be replaced from the right end of the die holder body, the convenience of replacing the ejector rod body is improved, the stability of equipment is improved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of back punching devices, and in particular to a back punching device for a hexagonal nut forming machine. Background Technology

[0002] Hexagonal nuts are a common type of fastener, mainly used in conjunction with bolts or screws to connect mechanical parts. Hexagonal nut forming machines are cold heading forming equipment specifically designed for manufacturing hexagonal nuts. Their core function is to process metal wire into standard hexagonal nuts through a multi-station stamping process. The rear punching device of the hexagonal nut forming machine is a key functional module of the equipment. Its core function is to extend the ejector pin after forming to push the finished product out of the mold cavity, preventing the product from getting stuck in the mold.

[0003] In the existing technology, the ejector pin in the existing back punch device must be inserted from the tail end of the mold base and then tightened with a threaded sleeve. When the ejector pin needs to be replaced, the threaded sleeve must also be removed from the tail end first. Since the ejector pin is a consumable part that needs to be replaced frequently, but each replacement requires the threaded sleeve to be removed and installed from the tail end first, the machine structure makes the tail end space limited, which makes the replacement time-consuming and laborious, increases the operation steps and time costs, reduces the efficiency of ejector pin replacement, affects equipment stability, and reduces production efficiency. Therefore, it is necessary to improve the back punch device of the hexagonal nut forming machine to solve the above problems. Utility Model Content

[0004] To overcome the problem that each replacement requires disassembling and installing the threaded sleeve from the tail end, which is time-consuming and laborious due to the limited space at the tail end caused by the machine's structure, thus affecting the stability of the equipment.

[0005] The technical solution of this utility model is as follows: a rear punch device for a hexagonal nut forming machine, including a mold base body, a push rod body, and a rear punch assembly. The push rod body is provided inside the mold base body, and a first spring is fixedly connected inside the push rod body. The first spring is in contact with the mold base body. A rear punch assembly for moving the push rod body is provided at the right end of the mold base body. An installation frame is provided inside the mold base body, and a locking block is slidably connected inside the installation frame. The locking block is engaged inside the mold base body.

[0006] Preferably, the mold base body has a matching groove at the corresponding position of the ejector pin body, and the ejector pin body is set in the groove of the mold base body.

[0007] Preferably, the mold base body has a matching groove at the corresponding position of the mounting frame, and the mounting frame is set in the groove of the mold base body.

[0008] Preferably, the mold base body has a matching groove at the corresponding position of the locking block, and the locking block can be locked into the groove of the mold base body.

[0009] Preferably, a limiting shaft is fixedly connected inside the mounting frame, a long plate is fixedly connected to the inside of the locking block, the long plate is slidably connected inside the mounting frame, the long plate is slidably connected to the outside of the limiting shaft, a second spring is fixedly connected between the long plate and the mounting frame, and a lever is fixedly connected to the inside of the long plate, the lever is slidably connected inside the mounting frame.

[0010] Preferably, the back punch assembly includes a support frame, which is fixedly connected to the right end of the mold base body. A motor is fixedly connected to the front end of the support frame, and a rotating shaft is fixedly connected to the output end of the motor. The rotating shaft is rotatably connected inside the support frame, and a rotating bracket is fixedly connected to the outside of the rotating shaft. A light axis is fixedly connected inside the end of the rotating bracket away from the rotating shaft, and a movable bracket is rotatably connected to the outside of the light axis. A trapezoidal block is slidably connected inside the support frame, and a U-shaped frame is fixedly connected to the top of the trapezoidal block. The end of the movable bracket away from the light axis is rotatably connected to the inside of the U-shaped frame.

[0011] Preferably, the support frame has a matching groove at the corresponding position of the trapezoidal block, and the trapezoidal block slides in the groove of the support frame.

[0012] The beneficial effects of this utility model are as follows: Compared to the previous method of disassembling and installing the threaded sleeve from the tail end each time it needs to be replaced, this method aligns the ejector rod body with the corresponding slot of the mold base body and inserts it, and then aligns the mounting frame with the corresponding slot of the mold base body and inserts it. The arc end of the locking block easily engages with the slot of the mold base body, allowing the mounting frame to be installed inside the mold base body. At this time, the first spring is in contact with the mounting frame, preventing the ejector rod body from falling out of the mold base body. This eliminates the need to replace it from the right end of the mold base body, improves the convenience of replacing the ejector rod body, enhances the stability of the equipment, and increases production efficiency. It also avoids the problem of time-consuming and laborious replacement due to the limited space at the tail end caused by the machine structure, which affects the stability of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the mold base body of this utility model;

[0015] Figure 3 This is a schematic diagram of the card block structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the rear punch assembly structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the trapezoidal block structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Mold base body; 21. Push rod body; 22. First spring; 23. Mounting frame; 24. Limiting shaft; 25. Long plate; 26. Second spring; 27. Locking block; 28. Pulling block; 31. Support frame; 32. Motor; 33. Rotating shaft; 34. Rotating bracket; 35. Optical shaft; 36. Trapezoidal block; 37. U-shaped frame; 38. Movable bracket. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5This utility model provides an embodiment of a hexagonal nut forming machine's back punch device, including a mold base body 1, a push rod body 21, and a back punch assembly. The push rod body 21 is disposed inside the mold base body 1, and a first spring 22 is fixedly connected inside the push rod body 21, contacting the mold base body 1. A back punch assembly for moving the push rod body 21 is disposed at the right end of the mold base body 1. A mounting frame 23 is disposed inside the mold base body 1, and a locking block 27 is slidably connected inside the mounting frame 23. The locking block 27 is engaged inside the mold base body 1. By aligning the push rod body 21 with the corresponding slot of the mold base body 1 and inserting it, and then aligning the mounting frame 23 with the corresponding slot of the mold base body 1 and inserting it, the push rod body 21 passes through the arc of the locking block 27. The end allows the locking block 27 to be easily engaged in the groove of the mold base body 1, so that the mounting frame 23 is installed inside the mold base body 1. At this time, the first spring 22 is in contact with the mounting frame 23 to prevent the ejector rod body 21 from falling out of the mold base body 1, thus preventing it from being replaced from the right end of the mold base body 1, improving the convenience of replacing the ejector rod body 21, improving the stability of the equipment, and improving production efficiency. The back punch assembly drives the rotating shaft 33 to rotate inside the support frame 31 by starting the motor 32, thereby driving the rotating bracket 34 to rotate. Through the movable bracket 38, it drives the trapezoidal block 36 to reciprocate inside the support frame 31, so that the ejector rod body 21 reciprocates inside the mold base body 1, thus completing the molding process. Afterwards, the ejector pin body 21 extends to eject the finished product. The first spring 22 ensures that the ejector pin body 21 remains in contact with the outer wall of the second spring 26, improving the stability and efficiency of the subsequent punch. The mold base body 1 has a corresponding groove on the ejector pin body 21, and the ejector pin body 21 is positioned within this groove, facilitating its positioning and improving its subsequent punch stability. The mold base body 1 also has a corresponding groove on the mounting frame 23, which is positioned within this groove. When installing the mounting frame 23, the two sides with locking blocks 27 are aligned with the corresponding grooves on the mold base body 1, allowing the locking blocks to be inserted. The arc end of block 27 allows it to move inward when the mounting frame 23 contacts the mold base body 1, compressing the second spring 26. When the mounting frame 23 is installed to its deepest point in the mold base body 1, the second spring 26, through its own elasticity, causes the block 27 to engage in the groove of the mold base body 1, thus completing the installation of the mounting frame 23 and facilitating the replacement of the ejector rod body 21. The mold base body 1 has a corresponding groove at the corresponding position of the block 27, and the block 27 can engage in the groove of the mold base body 1, allowing the mounting frame 23 to be installed and disassembled, facilitating the replacement of the ejector rod body 21 and improving the stability of the replacement. The mounting frame 23 is internally fixedly connected to a limit shaft 24.A long plate 25 is fixedly connected to the inner side of the locking block 27. The long plate 25 is slidably connected inside the mounting frame 23 and outside the limiting shaft 24. A second spring 26 is fixedly connected between the long plate 25 and the mounting frame 23. A lever 28 is fixedly connected to the inner side of the long plate 25 and slidably connected inside the mounting frame 23. By aligning the ejector rod body 21 with the corresponding slot of the mold base body 1 and inserting it, and then aligning the mounting frame 23 with the corresponding slot of the mold base body 1 and inserting it, the arc end of the locking block 27 is used to easily engage the locking block 27 in the slot of the mold base body 1, thus installing the mounting frame 23 inside the mold base body 1. At this time, the first spring 22 is in contact with the mounting frame 23, preventing the ejector rod body 21 from falling out of the mold base body 1, preventing replacement from the right end of the mold base body 1, improving the convenience of replacing the ejector rod body 21, improving the stability of the equipment, and improving production efficiency.

[0021] Please see Figure 4 - Figure 5 In this embodiment, the rear punch assembly includes a support frame 31, which is fixedly connected to the right end of the mold base body 1. A motor 32 is fixedly connected to the front end of the support frame 31, and a rotating shaft 33 is fixedly connected to the output end of the motor 32. The rotating shaft 33 is rotatably connected inside the support frame 31, and a rotating bracket 34 is fixedly connected to the outside of the rotating shaft 33. An optical axis 35 is fixedly connected inside the end of the rotating bracket 34 away from the rotating shaft 33, and a movable bracket 38 is rotatably connected to the outside of the optical axis 35. A trapezoidal block 36 is slidably connected inside the support frame 31, and a U-shaped frame 37 is fixedly connected to the top of the trapezoidal block 36. The end of the movable bracket 38 away from the optical axis 35 is rotatably connected inside the U-shaped frame 37. The rear punch assembly drives the rotating shaft 33 to rotate inside the support frame 31 by starting the motor 32, thereby driving the rotating bracket 34 to rotate. The movable bracket 38 drives the trapezoidal block 36 to reciprocate within the support frame 31, causing the ejector rod body 21 to slide reciprocally within the mold base body 1. After molding, the ejector rod body 21 extends to eject the finished product. The first spring 22 ensures that the ejector rod body 21 is in constant contact with the outer wall of the second spring 26, improving the stability and efficiency of the back punch. The support frame 31 has a matching groove at the corresponding position of the trapezoidal block 36. The trapezoidal block 36 slides within the groove of the support frame 31, allowing the ejector rod body 21 to remain in contact with the outer wall of the trapezoidal block 36. This causes the ejector rod body 21 to move linearly within the mold base body 1, thus extending to eject the finished product after molding, improving the stability of the equipment.

[0022] When it is necessary to replace the ejector pin body 21 during operation, the two side levers 28 are moved inward, causing the locking block 27 to move inward, releasing the limit on the mold base body 1, allowing the mounting frame 23 to be removed from the inside of the mold base body 1, and then the ejector pin body 21 inside the mold base body 1 is removed for replacement. The replaced ejector pin body 21 is aligned with the corresponding slot in the mold base body 1 and inserted, so that the ejector pin body 21 is inserted to the deepest point in the mold base body 1. Then, the mounting frame 23 is aligned with the corresponding slot in the mold base body 1 and inserted, so that it passes through the arc end of the locking block 27, making it easy to engage the locking block 27. The mounting frame 23 is installed inside the mold base body 1 in the groove. At this time, the first spring 22 is in contact with the mounting frame 23. By starting the motor 32, the rotating shaft 33 is driven to rotate inside the support frame 31, thereby driving the rotating bracket 34 to rotate. Through the movable bracket 38, the trapezoidal block 36 is driven to reciprocate inside the support frame 31, so that the ejector rod body 21 slides back and forth inside the mold base body 1. After molding, the ejector rod body 21 extends to eject the finished product. Through the first spring 22, the ejector rod body 21 is kept in contact with the outer wall of the second spring 26, which improves the stability of the back punch.

[0023] Through the above steps, by aligning the ejector rod body 21 with the corresponding slot of the mold base body 1 and inserting it, and then aligning the mounting frame 23 with the corresponding slot of the mold base body 1 and inserting it, the arc end of the locking block 27 can be easily engaged with the slot of the mold base body 1, so that the mounting frame 23 is installed inside the mold base body 1. At this time, the first spring 22 is in contact with the mounting frame 23 to prevent the ejector rod body 21 from falling out of the mold base body 1, so that it does not need to be replaced from the right end of the mold base body 1. This solves the problem that the limited space at the tail end due to the machine structure makes replacement time-consuming and laborious, affecting the stability of the equipment.

Claims

1. A punching device for a hexagonal nut forming machine, comprising a die base body (1), characterized in that: It also includes a push rod body (21) and a rear punch assembly. The push rod body (21) is provided inside the mold base body (1). A first spring (22) is fixedly connected inside the push rod body (21). The first spring (22) is in contact with the mold base body (1). A rear punch assembly for moving the push rod body (21) is provided at the right end of the mold base body (1). An installation frame (23) is provided inside the mold base body (1). A locking block (27) is slidably connected inside the installation frame (23). The locking block (27) is locked inside the mold base body (1).

2. The rear punching device of the hexagonal nut forming machine according to claim 1, characterized in that: The mold base body (1) has a matching groove at the corresponding position of the ejector rod body (21), and the ejector rod body (21) is set in the groove of the mold base body (1).

3. The rear punching device of the hexagonal nut forming machine according to claim 1, characterized in that: The mold base body (1) has a matching groove at the corresponding position of the mounting frame (23), and the mounting frame (23) is set in the groove of the mold base body (1).

4. The rear punching device of the hexagonal nut forming machine according to claim 1, characterized in that: The mold base body (1) has a matching groove at the corresponding position of the locking block (27), and the locking block (27) can be locked into the groove of the mold base body (1).

5. The rear punch device of the hexagonal nut forming machine according to claim 1, characterized in that: The mounting frame (23) is fixedly connected to a limiting shaft (24) inside. The inner side of the locking block (27) is fixedly connected to a long plate (25). The long plate (25) is slidably connected inside the mounting frame (23) and slidably connected outside the limiting shaft (24). A second spring (26) is fixedly connected between the long plate (25) and the mounting frame (23). A toggle block (28) is fixedly connected inside the long plate (25) and slidably connected inside the mounting frame (23).

6. The rear punching device of the hexagonal nut forming machine according to claim 1, characterized in that: The back punch assembly includes a support frame (31), which is fixedly connected to the right end of the mold base body (1). A motor (32) is fixedly connected to the front end of the support frame (31). A rotating shaft (33) is fixedly connected to the output end of the motor (32). The rotating shaft (33) is rotatably connected inside the support frame (31). A rotating bracket (34) is fixedly connected to the outside of the rotating shaft (33). A light axis (35) is fixedly connected inside the end of the rotating bracket (34) away from the rotating shaft (33). A movable bracket (38) is rotatably connected to the outside of the light axis (35). A trapezoidal block (36) is slidably connected inside the support frame (31). A U-shaped frame (37) is fixedly connected to the top of the trapezoidal block (36). The end of the movable bracket (38) away from the light axis (35) is rotatably connected to the inside of the U-shaped frame (37).

7. The rear punch device for the hexagonal nut forming machine according to claim 6, characterized in that: The support frame (31) has a matching groove at the corresponding position of the trapezoidal block (36), and the trapezoidal block (36) slides in the groove of the support frame (31).

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