Cold Heading Machine Clamp Parts

Abstract

The invention discloses a clamp component of a cold heading machine, comprising a movable clamp seat, on which a plurality of clamp units are arranged side by side on the left and right sides, characterized in that each clamp unit comprises left and right clamp jaws and a clamp shaft, the left and right clamp jaws perform relative opening and closing movements, the clamp shaft is arranged on the clamp seat in a front and rear direction and can rotate, the rotation of the clamp shaft is driven by an opening and closing clamp cam structure, the rotation return of the clamp shaft is driven by a clamp shaft return spring, the left clamp jaw is fixedly connected to the right clamp arm, the right clamp arm is fixedly connected to the front shaft end of the clamp shaft of the clamp unit of the present group, the right clamp jaw is fixedly connected to the left clamp arm, the left clamp arm is rotatably connected to the front shaft end of the clamp shaft of the left clamp unit adjacent to the present group, the left and right clamp arms are staggered with each other, and a slide groove and a push block are respectively arranged at the staggered position, and the push block is located in the slide groove. The clamp opening and closing and moving parts of the invention are simple in structure and light in weight, so as to realize high-speed cold heading operation, and are convenient to install and adjust.

Description

Technical Field

[0001] The invention relates to a cold heading machine, in particular to a clamping 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. It is used to process various standard and non-standard fasteners and auto parts. During the cold heading operation, the clamps of the cold heading machine need to open and close and slide left and right. Due to the complex opening and closing structure of the clamps, the weight of the sliding part of the clamps is also heavy, so it is difficult to ensure the high-speed cold heading operation; in addition, the opening and closing clamp cam structure that controls the opening and closing of the clamps is not convenient to install and adjust, which will also have an adverse effect on the cold heading operation efficiency of the cold heading machine. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a clamp opening and closing and moving part with a simple structure and light weight to achieve high-speed cold heading operation and a cold heading machine clamp component that is easy to install and adjust.

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

[0005] The clamping component of the cold heading machine includes a clamping seat, on which multiple groups of clamping units are arranged side by side on the left and right sides of the clamping seat, the clamping seat is movably arranged above the bottom mold box, and the bottom mold box is connected to the fixedly installed moving clamp seat, characterized in that each group of clamping units includes left and right clamping jaws and a clamping shaft, and the left and right clamping jaws make relative opening and closing movements, the clamping shaft is arranged on the clamping seat in the front and back directions and can rotate, the rotation of the clamping shaft is driven by the opening and closing clamp cam structure, and the rotation and return of the clamping shaft is driven by the clamping shaft return spring, the left clamping jaw is fixedly connected to the right clamping arm, and the right clamping arm is fixedly connected to the front shaft end of the clamping shaft of this group of clamping units, the right clamping jaw is fixedly connected to the left clamping arm, and the left clamping arm is rotatably connected to the front shaft end of the clamping shaft of the left group of clamping units adjacent to this group of clamping units, the left and right clamping arms are staggered with each other, and slide grooves and push blocks are respectively provided at the staggered positions, and the push blocks are located in the slide grooves. The clamp seat can slide left and right and is arranged on the top surface of the bottom mold box. The left and right sliding of the clamp seat is driven by the clamp seat roller. A roller positioning frame is provided on one side of the clamp seat to allow the clamp seat roller to be located therein. The clamp seat roller is connected to the bottom of the triangular swing arm, and the triangular swing arm is swingably arranged on the moving clamp seat. The left corner of the triangular swing arm is connected to the left crank through a left connecting rod, and the right corner of the triangular swing arm is connected to the right crank through a right connecting rod. The left and right cranks are swingably arranged on the crank shaft, and the left and right cranks swing in opposite directions during work. The swing of the left crank is driven by the left crank cam, and the swing of the right crank is driven by the right crank cam. The left and right crank cams are installed on the moving clamp gear shaft, and the moving clamp gear shaft is driven by the main motor.

[0006] The cold heading machine of the above technical solution has a simple and light-weight opening and closing structure of the clamp, and the clamp seat that drives the clamp opening and closing structure to slide left and right is also simple and light. In this way, since the clamp opening and closing and moving parts have a simple and light structure, the opening and closing and sliding actions of the clamp during cold heading operations will be flexible and light, thereby providing a basic technical guarantee for achieving high-speed cold heading operations.

[0007] Preferably, the opening and closing clamp cam structure drives the clamp shaft to rotate by the up and down swing of the middle swing arm. The middle swing arm can swing up and down and is arranged on the swing arm seat. The swing arm seat is fixedly installed on the moving clamp seat. The rear shaft end of the clamp shaft is fixedly connected to the rear crank. The front roller is installed on the rear crank. The front roller is in rolling contact with the bottom of the forearm end of the middle swing arm. The rear roller is installed on the rear arm end of the middle swing arm, and the rear roller is in contact with the opening and closing clamp cam of the opening and closing clamp cam structure.

[0008] Preferably, the opening and closing pliers cam structure includes a cam core shaft and multiple groups of opening and closing pliers cams arranged side by side on the cam core shaft. Each group of opening and closing pliers cams is independently installed and can be circumferentially adjusted on the cam core shaft. A scale ring fixed on the cam core shaft is provided between adjacent groups of opening and closing pliers cams. A bearing is provided at one axial end of the cam core shaft, and the bearing is pressed and fixed on the shifting pliers seat by a pressure cover. The other axial end of the cam core shaft is connected to the shifting pliers gear shaft, and the shifting pliers gear shaft is rotatably arranged on the shifting pliers seat. The above design can realize the off-machine adjustment of the opening and closing clamp cam structure that controls the opening and closing of the clamp, and the installation and adjustment are convenient. Outside the machine, the circumferential position of the opening and closing clamp cam can be adjusted in advance by aligning the scale and adjusting the corresponding data of the scale according to the products that need to be cold headed by the cold heading machine later. After the adjustment is completed, when the equipment needs to cold head this kind of product, the opening and closing clamp cam structure that has been adjusted outside the machine can be directly replaced with the opening and closing clamp cam structure originally installed on the unit, which greatly saves adjustment time and ensures the improvement of the cold heading operation efficiency of the cold heading machine. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0010] Figure 1 It is a structural schematic diagram of the present invention,

[0011] Figure 2 for Figure 1 Schematic diagram of the connection structure of some parts in the figure.

[0012] Figure 3 for Figure 2 Structural diagram of the middle clamp seat and clamp unit,

[0013] Figure 4 for Figure 2 Schematic diagram of the connection structure of some parts in the figure.

[0014] Figure 5 for Figure 1 The structure and installation diagram of the middle opening and closing clamp cam. DETAILED DESCRIPTION

[0015] As shown in the figure, the clamp component of the cold heading machine of the present invention includes a clamp seat 35, and five groups of clamp units are arranged side by side on the clamp seat 35. The clamp seat 35 can be slid left and right on the top surface of the bottom mold box 3, and the bottom mold box 3 is connected to the fixedly installed moving clamp seat 1. Each group of clamp units includes a left clamp 43, a right clamp 44 and a clamp shaft 34. The left and right clamps perform relative opening and closing actions. The clamp shaft 34 is arranged in the front and rear directions. The clamp shaft 34 is rotatably arranged on the clamp seat 35. The rotation of the clamp shaft 34 is driven by the opening and closing clamp cam structure 9, and the rotation return of the clamp shaft 34 is driven by the clamp shaft return spring 33. The left clamp 43 is fixedly connected to the right clamp arm 45, the right clamp arm 45 is fixedly connected to the front axle end of the clamp shaft 34 of this group of clamp units, the right clamp jaw 44 is fixedly connected to the left clamp arm 42, the left clamp arm 42 is rotatably connected to the front axle end of the clamp shaft of the left group of clamp units adjacent to this group of clamp units, the left clamp arm 42 and the right clamp arm 45 are staggered with each other and are respectively provided with a slide groove 40 and a push block 41 at the staggered position, the push block 41 is located in the slide groove 40, and the position of the push block 41 in the slide groove 40 can be adjusted by the upper screw and the lower screw to achieve the left-right alignment of the clamp center and the center of the upper mold hole of the bottom mold box, and the push block 41 is installed on the right clamp arm 45.

[0016] The left and right sliding of the clamp seat 35 is driven by the clamp seat roller 36. A roller positioning frame 37 is provided on the left side of the clamp seat 35 so that the clamp seat roller 36 is located therein. The clamp seat roller 36 is connected to the bottom of a triangular swing arm 38. The triangular swing arm 38 is swingably arranged on the moving clamp seat 1 through a swing arm shaft 39. The left corner of the triangular swing arm 38 is connected to the left crank 16 through a left connecting rod 15, and the right corner of the triangular swing arm 38 is connected to the right crank 19 through a right connecting rod 18. 16. The right crank 19 is swingably arranged on the crank shaft 21. The left and right cranks swing in opposite directions during operation. The swing of the left crank 16 is driven by the left crank cam 47 through the roller 17, and the swing of the right crank 19 is driven by the right crank cam 22 through the roller 20. The left crank cam 47 and the right crank cam 22 are fixedly mounted on the tongs shifting gear shaft 12. The tongs shifting gear shaft 12 is rotatably arranged on the tongs shifting seat 1, and the tongs shifting gear shaft 12 is driven by the main motor.

[0017] The opening and closing clamp cam structure 9 includes a cam core shaft 27 and six groups of opening and closing clamp cams 23 arranged side by side on the cam core shaft 27. Each group of opening and closing clamp cams 23 is independently installed and can be circumferentially adjusted on the cam core shaft 27. A scale ring 24 is fixed on the cam core shaft 27 between adjacent groups of opening and closing clamp cams 23. A bearing 62 is provided on the right side shaft end of the cam core shaft 27. The bearing 62 is pressed and fixed on the shift clamp seat 1 by a pressure cover 26. The left side shaft end of the cam core shaft 27 is connected to the shift clamp gear shaft 12, and has a connection structure: the left side shaft end of the cam core shaft 27 is provided with a cone head inserted into the cone hole 59 on the right side shaft end of the shift clamp gear shaft 12, and the left side shaft end of the cam core shaft 27 is provided with a locking pin 61, and the side wall of the cone hole 59 is provided with a locking groove 60 corresponding to the locking pin. The opening and closing clamp cam structure 9 drives the clamp shaft 34 to rotate through the up and down swing of the intermediate swing arm 30. The intermediate swing arm 30 can swing up and down through the swing arm shaft 28 and is arranged on the swing arm seat 29. The swing arm seat 29 is fixedly installed on the moving clamp seat 1. The rear shaft end of the clamp shaft 34 is fixedly connected to the rear crank 32. The front roller 31 is installed on the rear crank 32. The front roller 31 is in rolling contact with the bottom of the front arm end of the intermediate swing arm 30. The rear roller 25 is installed on the rear arm end of the intermediate swing arm 30, and the rear roller 25 is in contact with the opening and closing clamp cam 23.

Claims

1. The clamping parts of the cold heading machine include a clamping seat, on which multiple groups of clamping units are arranged side by side on the left and right sides. The clamping seat is movably arranged above the bottom die box, and the bottom die box is connected to the fixedly installed moving clamp seat, which is characterized by: Each clamp unit includes left and right clamping jaws and a clamping shaft, and the left and right clamping jaws perform relative opening and closing actions. The clamping shaft is arranged on the clamp seat in the front and rear directions and can rotate. The rotation of the clamping shaft is driven by the opening and closing clamp cam structure, and the rotation return of the clamping shaft is driven by the clamping shaft return spring. The left clamping jaw is fixedly connected to the right clamping arm, and the right clamping arm is fixedly connected to the front shaft end of the clamping shaft of this group of clamping units. The right clamping jaw is fixedly connected to the left clamping arm, and the left clamping arm is rotatably connected to the front shaft end of the clamping shaft of the left clamping unit adjacent to this group of clamping units. The left and right clamping arms are staggered with each other and are respectively provided with sliding grooves and push blocks at the staggered positions, and the push blocks are located in the sliding grooves; the clamp seat can slide left and right and is arranged on the top surface of the bottom mold box. The left and right sliding of the clamp seat is driven by the clamp seat roller. A roller positioning frame is provided on one side of the clamp seat to allow the clamp seat roller to be located therein. The roller of the clamp seat is connected to the bottom of the triangular swing arm, and the triangular swing arm is swingably arranged on the clamp seat. The left corner of the triangular swing arm is connected to the left crank through a left connecting rod, and the right corner of the triangular swing arm is connected to the right crank through a right connecting rod. The left and right cranks are swingably arranged on the crank shaft, and the left and right cranks swing in opposite directions during work. The swing of the left crank is driven by the left crank cam, and the swing of the right crank is driven by the right crank cam. The left and right crank cams are installed on the clamp gear shaft, and the clamp gear shaft is driven by the main motor; the opening and closing clamp cam structure drives the clamp shaft to rotate through the up and down swing of the middle swing arm.

2. The cold heading machine clamp component according to claim 1, characterized in that: The middle swing arm can swing up and down and is arranged on the swing arm seat. The swing arm seat is fixedly installed on the moving clamp seat. The rear shaft end of the clamp shaft is fixedly connected to the rear crank. The front roller is installed on the rear crank. The front roller is in rolling contact with the bottom of the front arm end of the middle swing arm. The rear roller is installed on the rear arm end of the middle swing arm, and the rear roller is in contact with the opening and closing clamp cam of the opening and closing clamp cam structure.

3. The cold heading machine clamp component according to claim 1 or 2, characterized in that: The opening and closing clamp cam structure includes a cam core shaft and multiple groups of opening and closing clamp cams arranged side by side on the cam core shaft. Each group of opening and closing clamp cams is independently installed and can be circumferentially adjusted on the cam core shaft. A scale ring is fixed on the cam core shaft between adjacent groups of opening and closing clamp cams. A bearing is provided at one shaft end of the cam core shaft, and the bearing is pressed and fixed on the shift clamp seat by a pressure cover. The other shaft end of the cam core shaft is connected to the shift clamp gear shaft, and the shift clamp gear shaft is rotatably arranged on the shift clamp seat.

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