High speed cold heading machine
By designing simple structure clamping parts, fast-cut wire cutting parts, adjustable die parts and fast-drive main drive parts in cold heading machines, the clamping structure, large weight and sliding in existing cold heading machines is solved. The problem of small gaps has achieved high-speed cold heading operations and efficient installation and adjustment, extending the service life of the equipment.
Patent Information
- Application Number
- CN202010691622.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-17
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2040-07-17
AI Technical Summary
In the cold heading operation, the clamp clamping structure is complex and the weight is large, making it difficult to achieve high-speed cutting and safe ejection, and the installation and adjustment are inconvenient, which affects the efficiency of cold heading operation. The sliding gap between the main slider is small and easy to wear, resulting in Equipment failure.
A high-speed cold heading machine including clamping parts, die parts, wire cutting parts and main transmission parts is designed. The clamping parts adopt a simple structure and lightweight clamping seat and opening and closing pliers cam structure. The wire cutting parts are fixed and The movable blade plate quickly cuts the wire, the die parts can be adjusted outside the machine, the sliding gap of the main slider adapts to the cold heading accuracy, and the main transmission parts use clutch devices to achieve rapid response.
It realizes the flexibility of clamp opening and closing and sliding movements, improves the high speed and efficiency of cold heading operations, simplifies installation and adjustment, and extends the working accuracy and service life of the equipment.
Smart Images
Figure CN111842757B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a cold heading machine. Background Art
[0002] Cold heading machine is a kind of equipment that cuts and cold extrudes various processed metal wires, so that the wires are cold-forged in the mold. It is used to process various standard and non-standard fasteners and auto parts. During the cold heading operation, the clamp of the cold heading machine needs to open and close and slide left and right. Since the opening and closing structure of the clamp is relatively complex, the weight of the left and right sliding part of the clamp is also heavier. At the same time, since the wire cannot be quickly cut and safely ejected, it is difficult to ensure the high-speed cold heading operation; in addition, the opening and closing clamp cam structure and die structure that control the opening and closing of the clamp are not convenient to install and adjust, which will also have an adverse effect on the cold heading efficiency of the cold heading machine; in addition, when the cold heading machine is performing cold heading operations, when the main slider that drives the die components to move slides back and forth on the inner side of the workbench, in order to ensure the cold heading accuracy, there should be a small sliding gap between the left and right sides of the main slider and the inner surface of the workbench, but if the sliding gap is small, it is very easy to cause the side of the main slider to wear too quickly, resulting in equipment failure. Summary of the invention
[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a high-speed cold heading machine with a simple and light structure for the opening and closing and moving parts of the clamps, which can quickly cut the wire and eject it safely to achieve high-speed cold heading operations, and which is easy to install and adjust and can maintain working accuracy for a long time.
[0004] The present invention is implemented by the following technical solutions:
[0005] The high-speed cold heading machine comprises a clamp component, a die component, a wire cutting component, a main slide block and a main transmission component. The clamp component comprises a clamp seat, and a plurality of groups of clamp units are arranged side by side on the clamp seat. The clamp seat is movably arranged above a bottom die box, and the bottom die box is connected to a fixedly installed shifting clamp seat, characterized in that each group of clamp units comprises left and right clamp jaws and a clamp shaft, and the left and right clamp jaws perform relative opening and closing actions. The clamp shaft is rotatably arranged on the clamp seat, and the rotation of the clamp shaft is driven by an opening and closing clamp cam structure, and the rotation and 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, and the right clamp arm is fixedly connected to the front shaft end of the clamp shaft of this group of clamp units. The right clamp jaw is fixedly connected to the left clamp arm, and the left clamp arm is rotatably connected to the front shaft end of the clamp shaft of the left group of clamp units adjacent to this group of clamp units. The left and right clamp 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 in structure and light in weight. In this way, the opening and closing and sliding actions of the clamp during cold heading operation will be flexible and light, thereby providing a basic technical guarantee for realizing high-speed cold heading operation.
[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.
[0009] Preferably, the wire cutting component 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 mold box, the movable blade is close to the fixed blade and moves up and down, the upward movement of the movable blade is driven by the blade push rod, and the movable blade is pushed back by the 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 driven by the blade push rod cam, and the blade push rod is pushed back by the blade push rod spring after the upward movement. The lower rod end of the blade 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, 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 blade push rod cam, and the blade push rod cam can be circumferentially adjusted and installed on the rear drive gear shaft. 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.
[0010] 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 achieving rapid cutting of the wire and safe ejection, thereby achieving high-speed cold heading operation.
[0011] Preferably, the die component includes a die seat, which is arranged on the front of the main slider, and the back of the die seat is fixedly connected to the positioning card plate through a pull rod, and the back of the die seat is fixedly installed with left and right positioning pins on the left and right sides near the top position, and the main slider is provided with a positioning card slot corresponding to the positioning card plate, and the main slider is provided with a positioning support surface and a positioning pin hole corresponding to the left and right positioning pins, and the positioning support surface supports the left positioning pin, and the positioning pin hole supports the right positioning pin and limits the right positioning pin to the left and right, and the front of the main slider is provided with a forward-extending screw, and the screw is locked and fixed by a nut after it moves through the die seat. The above design can simply realize the off-machine adjustment of the die component to facilitate the adjustment of the alignment of the upper and lower die holes, and the installation and adjustment are convenient, which ensures the improvement of the cold heading operation efficiency of the cold heading machine.
[0012] Preferably, the main slider is set to slide back and forth on the inner side of the workbench of the cold heading machine. When the main slider slides to the working position, there is a small sliding gap between its left and right sides and the inner surface of the workbench. When the main slider is away from the working position, there is a large sliding gap between its left and right sides and the inner surface of the workbench. A bevel transition is provided between the large sliding gap and the small sliding gap. Through the above design, the main slider has a small sliding gap between its left and right sides and the inner surface of the workbench only when it enters the working position of the cold heading operation to ensure the cold heading accuracy. At other times, the main slider can slide back and forth with a large sliding gap between the inner surface of the workbench to ensure its smooth movement without excessive wear.
[0013] Preferably, the main transmission component includes a main motor, which drives the main crank gear shaft through an independently installed clutch device. The main crank gear shaft is used to push the main slider. The main crank gear shaft is transmitted to the driving gear shaft after passing through the intermediate transition gear. The main crank gear shaft also drives the caliper gear shaft through a chain. The clutch device includes a clutch seat, a clutch shaft, a pneumatic brake element and a pneumatic clutch element. The clutch seat is fixedly installed on the outside of the workbench, and the clutch shaft is rotatably arranged in the clutch seat. A pinion and a pulley are provided on the clutch shaft. The pinion is fixed on the clutch shaft, and the pinion meshes with the large gear installed on the main crank gear shaft. The pulley is rotatably arranged on the clutch shaft, and the pulley is connected to the main motor through a belt drive. The pneumatic clutch element is arranged on the outside of the clutch shaft and fixedly connected to the pulley. The inner hole of the pneumatic shaft of the pneumatic clutch element is sleeved on the outer shaft end of the clutch shaft. The pneumatic brake element is arranged on the inner side of the clutch shaft and fixedly connected to the clutch seat. The inner hole of the pneumatic shaft of the pneumatic brake element is sleeved on the inner shaft end of the clutch shaft.
[0014] After adopting the above technical scheme, the clutch device in the main transmission component is installed independently of the main crank gear shaft, and the pneumatic clutch and pneumatic brake elements can be located at the two ends of the clutch shaft respectively, which not only achieves rapid response but also avoids excessive deformation of the main crank gear shaft, providing a basic technical guarantee for realizing high-speed cold heading operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention has the following accompanying drawings:
[0016] Figure 1 This is the appearance structure diagram of the present invention,
[0017] Figure 2 for Figure 1 The internal structure diagram of
[0018] Figure 3 This is a schematic diagram of the structure of the clamp component and the wire cutting component.
[0019] Figure 4 for Figure 3 Connection structure of some parts in the middle Figure 1 ,
[0020] Figure 5 for Figure 4 Structural diagram of the middle clamp seat and clamp unit,
[0021] Figure 6 for Figure 3 Connection structure of some parts in the middle Figure 2 ,
[0022] Figure 7 for Figure 6 The view after removing some parts.
[0023] Figure 8 for Figure 3 The structure and installation diagram of the middle opening and closing clamp cam.
[0024] Fig. 9 This is a schematic diagram of the structure of the wire cutting component.
[0025] Fig.10 for Fig. 9 A partial enlarged view of
[0026] Fig.11 This is the sliding structure diagram of the main slider on the inner side of the workbench.
[0027] Fig.12 This is the installation structure diagram of the die components on the main slide.
[0028] Fig.13 for Fig.12 A separate view for the main slider in
[0029] Fig.14 for Fig.12 Individual views of the middle punch die components,
[0030] Fig.15 for Figure 1 The appearance structure diagram of the clutch device.
[0031] Fig.16 for Fig.15 Axial cross-sectional view of the clutch device. DETAILED DESCRIPTION
[0032] like Figure 1-8As shown, the high-speed cold heading machine of the present invention comprises a clamping part 2, a die part 4, a wire cutting part 8, a main slider 5 and a main transmission part. The main transmission part comprises a main motor 10. The main motor 10 drives a main crank gear shaft 11 through an independently installed clutch device 7. The main crank gear shaft 11 is used to push the main slider 5. The main crank gear shaft 11 is transmitted through an intermediate transition gear 14 to a driving gear shaft 13. The main crank gear shaft 11 also drives a shifting clamp gear shaft 12 through a chain. The clamp component 2 has 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. 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 back 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. The rotation return of the clamp shaft 34 is driven by the clamp shaft return spring 33. The left clamp 43 is fixedly connected On 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.
[0033] 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 to allow the clamp seat roller 36 to be 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 shift 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. The left crank 16 and the right crank 19 are 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 installed on the shift clamp gear shaft 12, and the shift clamp gear shaft 12 is rotatably arranged on the shift clamp seat 1.
[0034] 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.
[0035] like Figure 6 , 7As shown in Figures 9 and 10, the wire cutting component 8 includes 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 mold 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 rotates around the fixed support shaft 6 8 is set to swing back and forth, 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 the knife plate push rod cam 65, and the knife plate push rod cam 65 can be circumferentially adjusted and installed on the rear drive gear shaft 13; the push rod 57 is set to move forward and backward in the bottom mold box 3, the push rod 57 is aligned with the wire perforation of the movable knife plate at the upper limit position, the forward movement of the push rod 57 is pushed by the push rod swing arm 51, and the push rod spring 58 pushes the push rod spring 58 to return to its original position after the push rod swing arm 51 moves forward, the push rod swing arm 51 can swing back and forth and is set on the push rod swing arm shaft 49, the push rod swing arm 51 is pushed back to its original position by the push rod spring 50, the push rod swing arm 51 is installed with a push rod roller 48, the push rod swing arm roller 48 is in contact with the push rod cam 46, and the push rod cam 46 is fixedly installed on the shift clamp gear shaft 12.
[0036] like Figure 12-14 As shown, the die component 4 includes a die seat 69, which is arranged on the front side of the main slider 5, and the back side of the die seat 69 is fixedly connected to the positioning clamping plate 76 through a pull rod 77. The back side of the die seat 69 is fixedly installed with a left positioning pin 78 and a right positioning pin 75 on the left and right sides near the top position. The main slider 5 is provided with a positioning slot 73 corresponding to the positioning clamping plate 76, and the main slider 5 is provided with a positioning support surface 74 and a semicircular positioning pin hole 72 corresponding to the left and right positioning pins. The positioning support surface 74 supports the left positioning pin 78, and the positioning pin hole 72 supports the right positioning pin 75 and limits the right positioning pin 75 to the left and right. The front side of the main slider 5 is provided with a forward-extending screw 71, and the screw 71 is locked and fixed to the die seat 69 by a nut 70 after it moves through the die seat 69.
[0037] like Figure 1 , 11As shown, the main slider 5 is set to slide forward and backward inside the workbench 6 of the cold heading machine, and a copper plate 82 is provided on the left and right sides of the main slider 5. The left and right inner surfaces of the workbench 6 are provided with a high-hardness alloy plate 79 and a high-hardness alloy plate 81 one after the other. The high-hardness alloy plate 81 is close to the cold heading working position. There is a small sliding gap between the high-hardness alloy plate 81 and the left and right sides of the main slider 5, which is generally not more than 0.03mm. There is a large sliding gap between the high-hardness alloy plate 79 and the left and right sides of the main slider 5, which is generally not less than 0.12mm In this way, when the main slider 5 slides to the position in contact with the high-hardness alloy plate 81, there will be a very small sliding gap between the left and right sides of the main slider and the inner surface of the workbench, ensuring the accuracy of the cold heading work. When the main slider is away from the cold heading working position, there will be a larger sliding gap between its left and right sides and the inner surface of the workbench, ensuring that the main slider slides back and forth smoothly without wearing out too quickly. A ramp 80 is provided between the large sliding gap and the small sliding gap, and the ramp 80 is opened on the inner surface of the high-hardness alloy plate 81.
[0038] like Figure 1 , 15 As shown in Figures 16, the clutch device 7 includes a clutch seat 88, a clutch shaft 85, a pneumatic brake element 83 and a pneumatic clutch element 87. The clutch seat 88 is fixedly installed on the outer side of the workbench 6, and the clutch shaft 85 is rotatably arranged in the clutch seat 88. A pinion 84 and a pulley 86 are arranged on the clutch shaft 85. The pinion 84 is fixed on the clutch shaft 85, and the pinion 84 meshes with the large gear installed on the main crank gear shaft 11. The pulley 86 is rotatably arranged on the clutch shaft 85, and the pulley 86 is connected to the main motor 10 through a belt drive. The pneumatic clutch element 87 is arranged on the outer side of the clutch shaft 85 and is fixedly connected to the pulley 86. The inner hole of the pneumatic shaft 89 of the pneumatic clutch element 87 is sleeved on the outer shaft end of the clutch shaft 85. The pneumatic brake element 83 is arranged on the inner side of the clutch shaft 85 and is fixedly connected to the clutch seat 88. The inner hole of the pneumatic shaft 90 of the pneumatic brake element 83 is sleeved on the inner shaft end of the clutch shaft 85.
Claims
1. A high-speed cold heading machine, comprising a clamp component, a die component, a wire cutting component, a main slide block and a main transmission component. The clamp component comprises a clamp seat, on which a plurality of clamp units are arranged side by side. The clamp seat is movably arranged above a bottom die box, and the bottom die box is connected to a fixedly installed movable clamp seat, and is characterized in that: Each group of clamp units 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 rotatably arranged on the clamping seat, and 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 group of clamping units adjacent to this group of clamping units. The left and right clamping arms are staggered with each other and are respectively provided with slide grooves and push blocks at the staggered positions, and the push blocks are located in the slide grooves; the clamping 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 clamping seat is driven by the clamping seat roller. A roller positioning frame is provided on one side of the clamping seat to allow the clamping 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 moving 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 moving gear shaft, and the clamp moving gear shaft is driven by the main motor.
2. The high-speed cold heading machine according to claim 1, characterized in that: The opening and closing clamp cam structure drives the clamp shaft to rotate through 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 at 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 high-speed cold heading machine 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.
4. The high-speed cold heading machine according to claim 1, characterized in that: The wire cutting component includes a fixed knife plate and a movable knife plate. The fixed knife plate and the movable knife plate are provided with wire perforations. The fixed knife plate is fixedly installed on the front side of the bottom mold box. The movable knife plate is close to the fixed knife plate and moves up and down. The upward movement of the movable knife plate is pushed by the knife plate push rod. 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 under the movable knife plate. The upward movement of the knife plate push rod is pushed by the knife plate push rod cam. After the knife plate push rod moves upward, it is pushed back by the knife plate push rod spring.
5. The high-speed cold heading machine according to claim 4, characterized in that: 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.
6. The high-speed cold heading machine according to claim 1, characterized in that: The die assembly includes a die seat, which is arranged on the front of the main slider, and the back of the die seat is fixedly connected to the positioning clamping plate by a pull rod. The back of the die seat is fixedly installed with left and right positioning pins on the left and right sides near the top position. The main slider is provided with a positioning slot corresponding to the positioning clamping plate, and the main slider is provided with a positioning support surface and a positioning pin hole corresponding to the left and right positioning pins. The positioning support surface supports the left positioning pin, and the positioning pin hole supports the right positioning pin and limits the right positioning pin to the left and right. A forward-extending screw is provided on the front of the main slider, and the screw locks the die seat through a nut after it moves through the die seat.
7. The high-speed cold heading machine according to claim 1, characterized in that: The main slider is set to slide back and forth on the inner side of the workbench of the cold heading machine. When the main slider slides to the working position, there is a smaller sliding gap between its left and right sides and the inner surface of the workbench. When the main slider is away from the working position, there is a larger sliding gap between its left and right sides and the inner surface of the workbench. A slope is provided between the large sliding gap and the small sliding gap for transition.
8. The high-speed cold heading machine according to claim 1, characterized in that: The main transmission component comprises a main motor, which drives the main crank gear shaft through an independently installed clutch device. The main crank gear shaft is used to push the main slider. The main crank gear shaft is transmitted through the intermediate transition gear and then passes through the driving gear shaft. The main crank gear shaft also drives the caliper gear shaft through a chain. The clutch device comprises a clutch seat, a clutch shaft, a pneumatic brake element and a pneumatic clutch element. The clutch seat is fixedly installed on the outside of the workbench, and the clutch shaft is rotatably arranged in the clutch seat. A pinion and a pulley are arranged on the clutch shaft. The pinion is fixed on the clutch shaft, and the pinion meshes with the large gear installed on the main crank gear shaft. The pulley is rotatably arranged on the clutch shaft, and the pulley is connected to the main motor through a belt drive. The pneumatic clutch element is arranged on the outside of the clutch shaft and fixedly connected to the pulley. The inner hole of the pneumatic shaft of the pneumatic clutch element is sleeved on the outer shaft end of the clutch shaft. The pneumatic brake element is arranged on the inner side of the clutch shaft and fixedly connected to the clutch seat. The inner hole of the pneumatic shaft of the pneumatic brake element is sleeved on the inner shaft end of the clutch shaft.