A locking structure for main die box of cold heading machine

Abstract

The invention discloses a main die box locking structure of a cold heading machine, comprising a cold heading machine body and a main die box, a step-shaped die box fixing groove is provided on the cold heading machine body, the main die box is installed in the die box fixing groove, and the main die box is positioned and locked by a side positioning pad, a first clamping assembly, a lower positioning pad and a second clamping assembly. The main die box locking structure of the cold heading machine has simple installation steps, does not need to manually lock the main die box by bolts, is more convenient to operate, and is conducive to improving work efficiency. At the same time, when disassembling the main die box, the locking structure does not need to be disassembled, and can be repeatedly used after one installation.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading machines, and in particular to a main die box locking structure of a cold heading machine. Background Art

[0002] The multi-station cold heading machine is a special equipment mainly used for batch production of nuts, bolts and other fasteners. The cold heading machine is equipped with a main die box to install the cold heading main die and cooperate with the punch die to cold extrude the product. Since the cold heading machine needs to replace the old die with the new one or replace the die for different product models during the production process, The main mold box is replaced frequently. often high .

[0003] In the prior art, the main die box of the cold heading machine is installed by screw fixing. After the die box is positioned, the main die box is locked to the main machine with screws. The steps of installing and removing the die box are complicated and the accuracy is poor, resulting in When the equipment is down The time is long, which affects the production efficiency. In addition, the above method not only requires processing a large number of The screw holes It takes a lot of man-hours, and these screw holes are difficult to process, which has a negative impact on the strength of the main body, and it is also very inconvenient to replace the mold box in the future. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention proposes a main die box locking structure of a cold heading machine.

[0005] The present invention provides a main die box locking structure for a cold heading machine, comprising a cold heading machine body and a main die box; and further comprising:

[0006] The side positioning pad is fixedly mounted on the surface of the cold heading machine body that matches the side surface of the main die box, and is used to position the side surface of the main die box;

[0007] The first clamping assembly is installed on the cold heading machine body and is located on the other side of the main mold box. The first clamping assembly includes a transverse oblique pressure block, a guide rod, a pull rod and a first locking hydraulic rod. The guide rod is fixedly installed on the cold heading machine body and is perpendicular to the front of the main mold box. The transverse oblique pressure block is slidably installed on the guide rod. The transverse oblique pressure block is connected to the first locking hydraulic rod through the pull rod. The first locking hydraulic rod can drive the transverse oblique pressure block to slide along the guide rod through the pull rod. When the transverse oblique pressure block slides backward from the front of the main mold box, the transverse oblique pressure block and the side of the main mold box cooperate with the inclined surface to lock the main mold box to the rear and one side.

[0008] The lower positioning pad is fixedly mounted on the surface of the cold heading machine body matching the bottom surface of the main die box, and is used to position the bottom surface of the main die box;

[0009] The second clamping assembly is installed in the installation groove between the bottom of the main mold box and the cold heading machine body. The second clamping assembly includes a fixed seat, a guide screw, a vertical inclined pressure block, a positioning inclined block and a second locking hydraulic rod. The guide screw passes through the main mold box from the front of the main mold box to the rear and is fixed on the cold heading machine body. The fixed seat, the vertical inclined pressure block and the positioning inclined block are sequentially mounted on the guide screw from the front end of the guide screw to the rear, and a positioning nut is installed at the front end of the guide screw. The vertical inclined pressure block is fixedly connected to the second locking hydraulic rod, and the second locking hydraulic rod is fixedly installed on the body. The vertical inclined pressure block is provided with a waist-shaped hole that can be movably matched with the guide screw. The second locking hydraulic rod can drive the vertical inclined pressure block to move up and down. When the vertical inclined pressure block moves downward, the vertical inclined pressure block and the positioning inclined block cooperate through the inclined surface to make the positioning inclined block slide backward to lock the main mold box.

[0010] Preferably, a return spring is also mounted on the guide screw, and the return spring is located between the rear end of the positioning bevel block and the body of the cold heading machine.

[0011] Preferably, the bottom of the rear end of the positioning bevel block is a right-angled surface, and a step portion is provided at the bottom of the main mold box, which can cooperate with the right-angled surface at the rear end of the positioning bevel block when the positioning bevel block locks the main mold box backward.

[0012] Preferably, the fixing seat is fixedly connected to the cold heading machine body by bolts.

[0013] Preferably, the second clamping assemblies are distributed at intervals along the length direction of the front side of the main mold box.

[0014] Preferably, the first locking hydraulic rod is fixed to the rear part of the cold heading machine body, and the pull rod is perpendicular to the front of the main mold box and passes through the cold heading machine body to be connected to the first locking hydraulic rod.

[0015] Preferably, a notch groove cooperating with the guide screw is provided at the bottom of the main mold box.

[0016] Beneficial effects:

[0017] In the present invention, the main die box locking structure of the cold heading machine positions the bottom surface and one side surface of the main die box through the lower positioning pad and the side positioning pad, and then locks the main die box in the horizontal direction and the vertical direction through the first clamping assembly and the second clamping assembly. The locking structure has simple installation steps, does not need to manually lock the main die box with bolts, is more convenient to operate, and is conducive to improving work efficiency. At the same time, when disassembling the main die box, the locking structure does not need to be disassembled, and can be repeatedly used after one installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of a main die box of a cold heading machine proposed in an embodiment from a top view;

[0019] Figure 2 It is a perspective view of the main die box of the cold heading machine in the embodiment from the front view;

[0020] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0021] Figure 4 It is a partial side sectional view of the main die box of the cold heading machine in the embodiment. DETAILED DESCRIPTION

[0022] Please refer to Figure 1-4 As shown, Figure 1 This is a perspective view of the main die box of the cold heading machine of this embodiment from a top view. Figure 2 This is a perspective view of the main die box of the cold heading machine of this embodiment from the front view. Figure 3 for Figure 2 The cross-sectional view at AA in the middle. Figure 4 A locking structure of a main die box of a cold heading machine according to an embodiment of the present invention comprises a cold heading machine body 1 and a main die box 2. A step-shaped die box fixing groove 11 is provided on the cold heading machine body 1. The main die box 2 is installed in the die box fixing groove 11. The main die box 2 is positioned and locked by a side positioning pad 3, a first clamping assembly 4, a lower positioning pad 5 and a second clamping assembly 6.

[0023] Reference Figure 2 The side positioning pad 3 is fixedly mounted on the left side wall of the mold box fixing groove 11, that is, the side positioning pad 3 is fixedly mounted on the surface of the cold heading machine body 1 that matches the side surface of the main mold box 2. The side positioning pad 3 is used to position the side surface of the main mold box 2, and the thickness of the side positioning pad 3 can be specifically designed according to the installation position of the main mold box 2. The first clamping assembly 4 is mounted on the cold heading machine body 1 and is located on the other side of the main mold box 2, that is, the first clamping assembly 4 is located on the other side of the main mold box 2.

[0024] like Figure 1-3 Specifically, the first clamping assembly 4 includes a transverse oblique pressure block 41, a guide rod 42, a pull rod 43 and a first locking hydraulic rod 44. The two guide rods 42 are fixedly mounted on the cold heading machine body 1 and are perpendicular to the front of the main mold box 2. The transverse oblique pressure block 41 is slidably mounted on the guide rods 42. The two guide rods 42 are respectively located at the upper and lower ends of the transverse oblique pressure block 41. The transverse oblique pressure block 41 is connected to the first locking hydraulic rod 44 through the pull rod 43. Specifically, the first locking hydraulic rod 44 is fixed to the rear of the cold heading machine body 1. The pull rod 43 is perpendicular to the front of the main mold box 2 and passes through the cold heading machine body 1 to connect with the first locking hydraulic rod 44. The first locking hydraulic rod 44 can drive the transverse oblique pressure block 41 to slide forward or backward along the guide rod 42 through the pull rod 43. When the transverse oblique pressing block 41 slides backward from the front of the main mold box 2, the transverse oblique pressing block 41 and the side surface of the main mold box 2 cooperate with each other through the inclined surface to lock the main mold box 2 backward and to one side.

[0025] According to the side positioning pad 3 and the first clamping assembly 4, when the main mold box 2 is installed, one side of the main mold box 2 is fitted with the side positioning pad 3, and the positioning of one side of the main mold box 2 is completed. Subsequently, the first locking hydraulic rod 44 of the first clamping assembly 4 is activated, so that the first locking hydraulic rod 44 pulls the transverse oblique pressing block 41 to move backward through the pull rod 43, and the inclined surface of the transverse oblique pressing block 41 will apply locking pressure to the main mold box 2 to the rear and one side, so that the side and back of the main mold box 2 can be positioned and locked at the same time.

[0026] like Figure 2 and Figure 4 As shown, in this embodiment, a lower positioning pad 5 is also installed on the bottom surface of the mold box fixing groove 11, that is, the lower positioning pad 5 is fixedly installed on the surface where the cold heading machine body 1 matches the bottom surface of the main mold box 2. The lower positioning pad 5 is used to position the bottom surface of the main mold box 2. The thickness of the lower positioning pad 5 can also be specifically designed according to the installation position of the main mold box 2. The main mold box 2 is placed on the lower positioning pad 5 to ensure that the main mold box 2 is horizontal. A mounting groove 12 is also provided between the bottom of the main mold box 2 and the cold heading machine body 1. The mounting groove 12 can be cut and processed by a milling cutter on the bottom surface of the main mold box 2 and the bottom surface of the mold box fixing groove 11. A second clamping assembly 6 is installed in the mounting groove 12. It can be understood by those skilled in the art that the second clamping assembly 6 is used to clamp the main mold box 2. Therefore, the rear part of the mounting groove 12 at the bottom of the main mold box 2 cannot be completely milled through, and a part needs to be left for the second clamping assembly 6 to clamp. In addition, in order to ensure a better clamping effect, the second clamping components 6 are distributed at intervals along the length direction of the front side of the main mold box 2, that is, the installation grooves 12 are also arranged at intervals.

[0027] Reference Figure 4Specifically, the second clamping assembly 6 includes a fixed seat 61, a guide screw 62, a vertical oblique pressure block 63, a positioning oblique block 64, and a second locking hydraulic rod 65. The guide screw 62 passes through the main mold box 2 from the front to the rear and is fixed on the cold heading machine body 1. In order to prevent the main mold box 2 from interfering with the guide screw 62 during assembly and disassembly, a notch groove 21 that cooperates with the guide screw 62 is also provided at the bottom of the main mold box 2. The fixed seat 61, the vertical oblique pressure block 63, and the positioning oblique block 64 are sequentially mounted on the guide screw 62 from the front end of the guide screw 62 to the rear, so that the fixed seat 61, the vertical oblique pressure block 63, and the positioning oblique block 64 are located at the front of the bottom of the main mold box 2. A positioning nut 66 is also installed at the front end of the guide screw 62. In addition, the fixed seat 61 is fixedly connected to the cold heading machine body 1 by bolts. The vertical oblique pressing block 63 is fixedly connected to the second locking hydraulic rod 65, and the second locking hydraulic rod 65 is fixedly installed on the machine body. The vertical oblique pressing block 63 is provided with a waist-shaped hole that can be movably matched with the guide screw 62. The second locking hydraulic rod 65 can drive the vertical oblique pressing block 63 to move upward or downward. When the vertical oblique pressing block 63 moves downward, the vertical oblique pressing block 63 and the positioning oblique block 64 cooperate through the inclined surface to make the positioning oblique block 64 slide backward to lock the main mold box 2.

[0028] According to the lower positioning pad 5 and the second clamping assembly 6, when installing the main mold box 2, the main mold box 2 is placed on the lower positioning pad 5, and the bottom of the main mold box 2 is located behind the positioning bevel block 64. Then the second locking hydraulic rod 65 is activated to pull the vertical bevel block 63 downward. During the downward movement of the vertical bevel block 63, the front end surface of the vertical bevel block 63 fits with the fixed seat 61, and the fixed seat 61 and the positioning nut 66 play a role in limiting the vertical bevel block 63. At the same time, the rear end surface of the vertical bevel block 63 cooperates with the positioning bevel block 64 through the inclined surface, and the inclined surface provides downward and backward thrust, so that the positioning bevel block 64 moves backward to lock the main mold box 2.

[0029] In a further embodiment, a return spring 67 is also mounted on the guide screw 62, and the return spring 67 is located between the rear end of the positioning bevel block 64 and the cold heading machine body 1. The return spring 67 is a pressure spring. When the main mold box 2 is disassembled, the second clamping assembly 6 needs to be unlocked. At this time, the vertical oblique pressure block 63 is pushed upward by the second locking hydraulic rod 65, and the positioning bevel block 64 loses the pressure of the vertical oblique pressure block 63. Under the elastic force of the return spring 67, the positioning bevel block 64 is pushed to move forward synchronously, thereby loosening the main mold box 2, making it easy to remove the main mold box 2, and at the same time, it is also convenient to install the main mold box 2 again.

[0030] In a further embodiment, the bottom of the rear end of the positioning bevel block 64 is a right angle surface, and a step portion 22 is provided at the bottom of the main mold box 2. The step portion 22 can cooperate with the right angle surface of the rear end of the positioning bevel block 64 when the positioning bevel block 64 locks the main mold box 2 backward. The step portion 22 cooperates with the positioning bevel block 64 to enhance the locking effect of the positioning bevel block 64, and further prevent the main mold box 2 from tilting upward.

[0031] In summary, the main die box locking structure of the cold heading machine according to the present invention can conveniently and quickly realize the locking and unlocking of the main die box 2, is simple to operate, and has high locking positioning accuracy, which is conducive to improving work efficiency. At the same time, the locking structure is easy to install, and there is no need to process more threaded holes on the cold heading machine body 1. When disassembling the main die box 2, there is no need to disassemble the locking structure, and it can be repeatedly used after one installation.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A main die box locking structure for a cold heading machine, comprising a cold heading machine body (1) and a main die box (2); characterized in that: Also includes: A side positioning pad (3) is fixedly mounted on a surface of the cold heading machine body (1) that matches a side surface of the main die box (2) and is used to position a side surface of the main die box (2); A first clamping assembly (4) is mounted on the cold heading machine body (1) and is located on the other side of the main mold box (2). The first clamping assembly (4) comprises a transverse oblique pressure block (41), a guide rod (42), a pull rod (43) and a first locking hydraulic rod (44). The guide rod (42) is fixedly mounted on the cold heading machine body (1) and is perpendicular to the front of the main mold box (2). The transverse oblique pressure block (41) is slidably mounted on the guide rod (42). The transverse oblique pressure block (41) is connected to the first locking hydraulic rod (44) via the pull rod (43). The first locking hydraulic rod (44) can drive the transverse oblique pressure block (41) to slide along the guide rod (42) via the pull rod (43). When the transverse oblique pressure block (41) slides backward from the front of the main mold box (2), the transverse oblique pressure block (41) and the side of the main mold box (2) cooperate with each other through the inclined surface to lock the main mold box (2) to the rear and one side. A lower positioning pad (5) is fixedly mounted on a surface of the cold heading machine body (1) that matches the bottom surface of the main die box (2) and is used to position the bottom surface of the main die box (2); The second clamping assembly (6) is installed in the installation groove (12) between the bottom of the main mold box (2) and the cold heading machine body (1). The second clamping assembly (6) includes a fixed seat (61), a guide screw (62), a vertical inclined pressure block (63), a positioning inclined block (64) and a second locking hydraulic rod (65). The guide screw (62) passes through the main mold box (2) from the front side of the main mold box (2) to the rear side and is fixed on the cold heading machine body (1). The fixed seat (61), the vertical inclined pressure block (63) and the positioning inclined block (64) are sequentially mounted on the guide screw (62) from the front end of the guide screw (62) to the rear side. The guide screw (62) is provided with a positioning nut (66) at the front end thereof, the vertical inclined pressure block (63) is fixedly connected to the second locking hydraulic rod (65), and the second locking hydraulic rod (65) is fixedly installed on the machine body, the vertical inclined pressure block (63) is provided with a waist-shaped hole which can be movably matched with the guide screw (62), and the second locking hydraulic rod (65) can drive the vertical inclined pressure block (63) to move up and down, and when the vertical inclined pressure block (63) moves downward, the vertical inclined pressure block (63) and the positioning inclined block (64) cooperate through the inclined surface so that the positioning inclined block (64) slides backward to lock the main mold box (2).

2. The main die box locking structure of the cold heading machine according to claim 1 is characterized in that: A return spring (67) is also mounted on the guide screw (62), and the return spring (67) is located between the rear end of the positioning inclined block (64) and the cold heading machine body (1).

3. The main die box locking structure of the cold heading machine according to claim 2 is characterized in that: The bottom of the rear end of the positioning bevel block (64) is a right-angled surface, and the bottom of the main mold box (2) is provided with a step portion (22). The step portion (22) can cooperate with the right-angled surface of the rear end of the positioning bevel block (64) when the positioning bevel block (64) locks the main mold box (2) backward.

4. The main die box locking structure of the cold heading machine according to claim 1 is characterized in that: The fixing seat (61) is fixedly connected to the cold heading machine body (1) by means of bolts.

5. The main die box locking structure of the cold heading machine according to claim 1 is characterized in that: The second clamping assemblies (6) are distributed at intervals along the length direction of the front side of the main mold box (2).

6. The main die box locking structure of the cold heading machine according to claim 1, characterized in that: The first locking hydraulic rod (44) is fixed to the rear of the cold heading machine body (1), and the pull rod (43) is perpendicular to the front of the main mold box (2) and passes through the cold heading machine body (1) to be connected to the first locking hydraulic rod (44).

7. The main die box locking structure of the cold heading machine according to claim 1 is characterized in that: The bottom of the main mold box (2) is provided with a notch groove (21) that matches the guide screw (62).

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