阅读说明：本技术 冷镦机线材切断部件 (Wire cutting component of cold header ) 是由 金永 朱建勇 金伟 于 2020-07-17 设计创作，主要内容包括：本发明公开了冷镦机线材切断部件,包括固定刀板和活动刀板,固定刀板、活动刀板设有线材穿孔,固定刀板在底模箱的正面固定安装,活动刀板紧贴固定刀板并作上下活动,其特征在于：活动刀板的向上活动由刀板顶杆进行推动,活动刀板向上活动后由刀板弹簧推动复位,刀板顶杆在活动刀板的下方作上下活动设置,刀板顶杆的向上活动由刀板顶杆凸轮进行推动,刀板顶杆向上活动后由刀板顶杆弹簧推动复位。本发明能够进行线材的快速切断并安全顶出,来实现冷镦作业的高速进行。(The invention discloses a wire cutting part of a cold header, which comprises a fixed cutting board and a movable cutting board, wherein the fixed cutting board and the movable cutting board are provided with wire through holes, the fixed cutting board is fixedly arranged on the front surface of a bottom die box, and the movable cutting board is tightly attached to the fixed cutting board and moves up and down, and is characterized in that: the upward movement of the movable cutting board is pushed by a cutting board ejector rod, the movable cutting board is pushed by a cutting board spring to reset after moving upward, the cutting board ejector rod is movably arranged up and down below the movable cutting board, the upward movement of the cutting board ejector rod is pushed by a cutting board ejector rod cam, and the cutting board ejector rod is pushed by the cutting board ejector rod spring to reset after moving upward. The invention can quickly cut off and safely eject the wire rod to realize high-speed cold heading operation.)

1. Cold heading machine wire rod cuts off part, including fixed cutting board and activity cutting board, fixed cutting board, activity cutting board are equipped with the wire rod and perforate, and fixed cutting board is at the positive fixed mounting of end die box, and activity cutting board hugs closely fixed cutting board and moves about doing, its characterized in that: the upward movement of the movable cutting board is pushed by a cutting board ejector rod, the movable cutting board is pushed by a cutting board spring to reset after moving upward, the cutting board ejector rod is movably arranged up and down below the movable cutting board, the upward movement of the cutting board ejector rod is pushed by a cutting board ejector rod cam, and the cutting board ejector rod is pushed by the cutting board ejector rod spring to reset after moving upward.

2. The cold header wire cutting member of claim 1, wherein: the lower rod end of the cutter plate ejector rod is connected with a small triangular swing arm, the small triangular swing arm swings back and forth around a fixed fulcrum 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 a cutter plate ejector rod cam, and the cutter plate ejector rod cam can be circumferentially adjusted and installed on a rear through drive gear shaft.

3. The cold header wire cutting member of claim 1, wherein: the wire cutting component further comprises a pushing ejector rod, the pushing ejector rod is movably arranged back and forth, the pushing ejector rod is aligned with the wire perforation of the upper limit position movable cutting board front and back, the pushing ejector rod moves forwards and is pushed by a pushing ejector rod spring, the pushing ejector rod is pushed to return after moving forwards, the pushing swing arm can swing back and forth and is arranged on a pushing swing arm shaft, a pushing swing arm roller is arranged on the pushing swing arm and is in contact with a pushing ejector rod cam, and the pushing ejector rod cam is fixedly arranged on a shifting clamp gear shaft.

Technical Field

The invention relates to a cold header, in particular to a wire cutting component of the cold header.

Background

The cold header is a device for cutting and cold extruding various processed metal wires to make the wires cold-headed and formed in a die, and is used for processing various standard and non-standard fasteners and automobile parts. The cold heading machine firstly needs to cut off the metal wire during cold heading operation, but the prior art cannot realize quick cutting and safe ejection of the wire, so that the high-speed operation of the cold heading operation is difficult to be ensured.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a wire cutting component of a cold heading machine, which can quickly cut and safely eject a wire to realize high-speed cold heading operation.

The invention is implemented by the following technical scheme:

cold heading machine wire rod cuts off part, including fixed cutting board and activity cutting board, fixed cutting board, activity cutting board are equipped with the wire rod and perforate, and fixed cutting board is at the positive fixed mounting of end die box, and activity cutting board hugs closely fixed cutting board and moves about doing, its characterized in that: the upward movement of the movable cutting board is pushed by a cutting board ejector rod, the movable cutting board is pushed by a cutting board spring to reset after moving upward, the cutting board ejector rod is movably arranged up and down below the movable cutting board, the upward movement of the cutting board ejector rod is pushed by a cutting board ejector rod cam, and the cutting board ejector rod is pushed by the cutting board ejector rod spring to reset after moving upward.

The lower rod end of the cutter plate ejector rod is connected with a small triangular swing arm, the small triangular swing arm swings back and forth around a fixed fulcrum 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 a cutter plate ejector rod cam, and the cutter plate ejector rod cam can be circumferentially adjusted and installed on a rear through drive gear shaft.

The wire cutting component further comprises a pushing ejector rod, the pushing ejector rod is movably arranged back and forth, the pushing ejector rod is aligned with the wire perforation of the upper limit position movable cutting board front and back, the pushing ejector rod moves forwards and is pushed by a pushing ejector rod spring, the pushing ejector rod is pushed to return after moving forwards, the pushing swing arm can swing back and forth and is arranged on a pushing swing arm shaft, a pushing swing arm roller is arranged on the pushing swing arm and is in contact with a pushing ejector rod cam, and the pushing ejector rod cam is fixedly arranged on a shifting clamp gear shaft.

In the wire cutting component of the technical scheme, when the wire cutting work is carried out, a metal wire firstly passes through the middle of the wire through holes of the fixed cutter plate and the movable cutter plate (at the moment, the movable cutter plate is at the lower limit position, the movable cutter plate is aligned with the wire through hole of the fixed cutter plate front and back), then the cutter plate ejector rod rapidly moves upwards under the action of the cutter plate ejector rod cam to push the movable cutter plate to rapidly move upwards to cut the metal wire, the cut surface is flat, after the cut, the movable cutter plate is at the upper limit position, the cut metal wire is ejected outwards from the wire through hole of the movable cutter plate by the action of the pushing ejector rod to be clamped by a clamp, after the cut wire is ejected, if the pushing ejector rod cannot smoothly exit from the wire through hole of the movable cutter plate, after the cutter plate ejector rod returns, the cutter plate spring cannot push the movable cutter plate because the pushing ejector rod can block the downward movement of the movable cutter plate, the pushing force of the knife plate spring is not enough to cut off the pushing ejector rod by the movable knife plate, so that the wire rod is quickly cut off and safely ejected, and the cold heading operation is carried out at high speed.

Drawings

The invention has the following drawings:

FIG. 1 is a schematic view of the structure of the knife plate and the pushing ram of the present invention,

figure 2 is another view of the orientation of figure 1,

FIG. 3 is a schematic view of the structure of the knife plate and the knife plate carrier rod of the present invention,

fig. 4 is a partially enlarged view of fig. 3.

Detailed Description

As shown in the figures, the wire cutting component of the cold header comprises a fixed cutter plate 56, a movable cutter plate 55, a cutter plate ejector rod 63 and a pushing ejector rod 57, wherein the fixed cutter plate 56 and the movable cutter plate 55 are provided with wire through holes 54, the fixed cutter plate 56 is fixedly arranged on the front surface of a bottom die box 3, the movable cutter plate 55 is tightly attached to the front surface of the fixed cutter plate 56 and moves up and down by taking a cutter plate shaft 53 as a swing fulcrum, the upward movement of the movable cutter plate 55 is pushed by the cutter plate ejector rod 63, the movable cutter plate 55 is pushed to reset by a cutter plate spring 52 after moving up, the cutter plate ejector rod 63 is movably arranged up and down below the movable cutter plate 55, the upward movement of the cutter plate ejector rod 63 is pushed by a cutter plate ejector rod cam 65, and the cutter plate ejector rod 63 is pushed to reset by a cutter plate ejector rod spring 66 after; the lower rod end of the knife board ejector rod 63 is connected with a small triangular swing arm 64, the small triangular swing arm 64 swings back and forth around a fixed fulcrum 68, a swing arm roller 67 is installed at one corner end of the small triangular swing arm 64, the swing arm roller 67 is in rolling contact with a knife board ejector rod cam 65, and the knife board ejector rod cam 65 can be circumferentially adjusted and installed on the rear through driving gear shaft 13; the material pushing ejector rod 57 is movably arranged in the bottom die box 3 in a front-back mode, the material pushing ejector rod 57 is aligned with the wire perforation of the upper limit position movable cutter plate in a front-back mode, the forward movement of the material pushing ejector rod 57 is pushed by the material pushing swing arm 51, the material pushing ejector rod 57 pushes the return by the material pushing ejector rod spring 58 after moving forward, the material pushing swing arm 51 can swing back and forth and is arranged on the material pushing swing arm shaft 49, the material pushing swing arm 51 pushes the return by the material pushing swing arm spring 50, the material pushing swing arm roller 48 is installed on the material pushing swing arm 51, the material pushing swing arm roller 48 is in contact with the material pushing ejector rod cam 46, the material pushing ejector rod cam 46 is fixedly installed on the shifting clamp gear shaft 12, the shifting clamp gear shaft 12 is rotatably arranged on a shifting clamp seat fixedly connected with the bottom.