Cold heading machine wire cutting parts

Abstract

The invention discloses a wire cutting component of a cold heading machine, comprising a fixed blade and a movable blade, wherein the fixed blade and the movable blade are provided with wire perforations, the fixed blade is fixedly installed on the front of a bottom die box, the movable blade is close to the fixed blade and moves up and down, and is characterized in that: the upward movement of the movable blade is pushed by a blade push rod, and the movable blade is pushed back by a blade spring after the upward movement, the blade push rod is arranged to move up and down below the movable blade, the upward movement of the blade push rod is pushed by a blade push rod cam, and the blade push rod is pushed back by a blade push rod spring after the upward movement. The invention can quickly cut the wire and eject it safely, so as to realize the high-speed cold heading operation.

Description

Technical Field

[0001] The invention relates to a cold heading machine, in particular to a wire cutting component of the cold heading machine. Background Art

[0002] Cold heading machine is a kind of equipment that cuts and cold extrudes various processed metal wires, and cold heads the wires in the mold to form them. It is used to process various standard and non-standard fasteners and auto parts. Cold heading machine needs to cut the metal wires first during cold heading operation, but the existing technology cannot achieve fast cutting and safe ejection of the wires, so it is difficult to ensure high-speed cold heading operation. Summary of the invention

[0003] In view of the shortcomings of the prior art, the object of the present invention is to provide a wire cutting component for a cold heading machine that can quickly cut and safely eject wires to achieve high-speed cold heading operations.

[0004] The present invention is implemented by the following technical solutions:

[0005] The wire cutting component of the cold heading machine includes a fixed blade and a movable blade. The fixed blade and the movable blade are provided with wire perforations. The fixed blade is fixedly installed on the front side of the bottom die box. The movable blade is close to the fixed blade and moves up and down. It is characterized in that the upward movement of the movable blade is pushed by the blade push rod, and the movable blade is pushed back to its original position by the blade spring after the upward movement. The blade push rod is arranged to move up and down below the movable blade, and the upward movement of the blade push rod is pushed by the blade push rod cam, and the blade push rod is pushed back to its original position by the blade push rod spring after the upward movement.

[0006] The lower rod end of the knife plate push rod is connected to a small triangular swing arm, which is set to swing back and forth around a fixed support shaft. A swing arm roller is installed at one corner end of the small triangular swing arm. The swing arm roller is in rolling contact with the knife plate push rod cam. The knife plate push rod cam can be circumferentially adjusted and installed on the rear drive gear shaft.

[0007] The wire cutting component also includes a push rod, which is arranged to move forward and backward. The push rod is aligned with the wire perforation of the movable knife plate at the upper limit position. The forward movement of the push rod is driven by the push swing arm. After the push rod moves forward, it is pushed back by the push rod spring. The push swing arm can swing forward and backward and is arranged on the push swing arm shaft. A push swing arm roller is installed on the push swing arm. The push swing arm roller contacts with the push rod cam. The push rod cam is fixedly installed on the shift clamp gear shaft.

[0008] The wire cutting component of the above technical solution, when performing wire cutting work, the metal wire will first pass through the middle of the wire perforations of the fixed knife plate and the movable knife plate (at this time the movable knife plate is in the lower limit position, and the wire perforations of the movable knife plate and the fixed knife plate are aligned front and back), and then the knife plate push rod moves upward quickly under the action of the knife plate push rod cam, pushing the movable knife plate to quickly move upward to cut the metal wire, and the cutting surface is flat. After cutting, the movable knife plate is in the upper limit position, and the cut metal wire is pushed out from the wire perforation of the movable knife plate through the action of the push rod to be clamped by the clamp. After the cut wire is pushed out, if the push rod cannot smoothly withdraw from the wire perforation of the movable knife plate, when the knife plate push rod returns to its position, the knife plate spring cannot push the movable knife plate back to its position, because the push rod will block the downward movement of the movable knife plate, and the pushing force of the knife plate spring is not enough to enable the movable knife plate to cut the push rod, thereby realizing rapid cutting and safe ejection of the wire, thereby realizing high-speed cold heading operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention has the following accompanying drawings:

[0010] Figure 1 It is a schematic diagram of the structure of the knife plate and the push rod in the present invention.

[0011] Figure 2 for Figure 1 Another direction view,

[0012] Figure 3 Schematic diagram of the structure of the blade and the blade push rod in the present invention.

[0013] Figure 4 for Figure 3 A partial enlarged view of . DETAILED DESCRIPTION

[0014] As shown in the figure, the wire cutting component of the cold heading machine of the present invention comprises a fixed blade plate 56, a movable blade plate 55, a blade plate push rod 63 and a material pushing push rod 57. The fixed blade plate 56 and the movable blade plate 55 are provided with a wire through hole 54. The fixed blade plate 56 is fixedly installed on the front side of the bottom die box 3. The movable blade plate 55 is close to the front side of the fixed blade plate 56 and moves up and down with the blade plate shaft 53 as a swing fulcrum. The upward movement of the movable blade plate 55 is pushed by the blade plate push rod 63. After the movable blade plate 55 moves upward, it is pushed back by the blade plate spring 52. The blade plate push rod 63 is arranged to move up and down below the movable blade plate 55. The upward movement of the blade plate push rod 63 is pushed by the blade plate push rod cam 65. After the blade plate push rod 63 moves upward, it is pushed back by the blade plate push rod spring 66. The lower rod end of the blade plate push rod 63 is connected to a small triangular swing arm 64, and the small triangular swing arm 64 is arranged to swing back and forth around a fixed support shaft 68. A swing arm 64 is installed at one corner end. The arm roller 67 and the swing arm roller 67 are in rolling contact with the blade push rod cam 65, and the blade push rod cam 65 can be circumferentially adjusted and installed on the rear drive gear shaft 13; the push rod 57 is arranged to move forward and backward in the bottom mold box 3, and the push rod 57 is aligned with the wire perforation of the upper limit position movable blade. The forward movement of the push rod 57 is pushed by the push swing arm 51, and the push rod 57 is pushed back by the push rod spring 58 after the forward movement. 51 can swing back and forth and is arranged on the pushing swing arm shaft 49. The pushing swing arm 51 is pushed back by the pushing swing arm spring 50. The pushing swing arm roller 48 is installed on the pushing swing arm 51. The pushing swing arm roller 48 contacts the pushing push rod cam 46. The pushing push rod cam 46 is fixedly installed on the shifting clamp gear shaft 12. The shifting clamp gear shaft 12 is rotatably arranged on the shifting clamp seat fixedly connected to the bottom mold box 3. The shifting clamp gear shaft 12 is used to control the opening and closing of the clamp and the left and right sliding movements of the cold heading machine.

Claims

1. The wire cutting part of the cold heading machine includes a fixed blade and a movable blade. The fixed blade and the movable blade are provided with wire perforations. The fixed blade is fixedly installed on the front of the bottom die box. The movable blade is close to the fixed blade and moves up and down. The characteristics are: The upward movement of the movable knife plate is pushed by the knife plate push rod, and after the movable knife plate moves upward, it is pushed back by the knife plate spring. The knife plate push rod is arranged to move up and down below the movable knife plate, and the upward movement of the knife plate push rod is pushed by the knife plate push rod cam, and after the knife plate push rod moves upward, it is pushed back by the knife plate push rod spring; The wire cutting component also includes a push rod, which is arranged to move forward and backward, and is aligned with the wire perforation of the movable knife plate at the upper limit position. The forward movement of the push rod is driven by a push swing arm, and after the push rod moves forward, it is pushed back by a push rod spring. The push swing arm can swing forward and backward and is arranged on the push swing arm shaft. A push swing arm roller is installed on the push swing arm, and the push swing arm roller contacts with the push rod cam, and the push rod cam is fixedly installed on the shifting clamp gear shaft; the lower rod end of the knife plate push rod is connected to a small triangular swing arm, and the small triangular swing arm is arranged to swing back and forth around a fixed support shaft.

2. The wire cutting component of the cold heading machine according to claim 1, characterized in that: A swing arm roller is installed at one corner end of the small triangular swing arm, and the swing arm roller is in rolling contact with a knife plate push rod cam, and the knife plate push rod cam can be circumferentially adjusted and installed on the rear drive gear shaft.

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