Multifunctional shearing and clamping device of cold header

Abstract

The application relates to the technical field of cold header equipment manufacturing, and particularly discloses a multifunctional shearing and clamping device of a cold header, which comprises a machine body, a main transmission assembly comprising a main transmission shaft, a clamping assembly comprising a clamping seat, a main clamping arm, an auxiliary clamping arm and a clamping driving piece, a first shifting part arranged on the main clamping arm, a second shifting part arranged on the auxiliary clamping arm, and the first shifting part and the second shifting part in movable abutment, the clamping driving piece being capable of driving the main clamping arm and the auxiliary clamping arm to approach each other, and an adjusting assembly comprising a clamping adjusting piece, when the main clamping arm and the auxiliary clamping arm appear clamping force attenuation, the clamping adjusting piece can increase the force of the clamping driving piece on the main clamping arm, so that the real-time adjustment of the clamping force is realized. The application has the effects of real-time adjustment of the clamping force, stable operation of the equipment and improved production efficiency.

Description

Technical Field

[0001] This application relates to the field of cold heading machine equipment manufacturing technology, and in particular to a multi-functional shearing and clamping device for a cold heading machine. Background Technology

[0002] Cold heading machines, as a commonly used metal forming equipment, apply high pressure to metal blanks, causing them to undergo plastic deformation in a mold, thereby manufacturing parts with high dimensional accuracy and complex structures. This processing method has been widely used in the automotive, machinery, and aerospace industries, and its high efficiency and precision provide a reliable guarantee for mass production. Meanwhile, with the continuous improvement of industrial automation and environmental protection requirements, cold heading processes place higher demands on process accuracy, production efficiency, and material utilization, prompting equipment to continuously develop towards integration and multi-functionality.

[0003] The invention disclosed in related technology with publication number 202111523799.9 is a high-speed cold heading machine. The cold heading machine includes a bed, a main transmission mechanism, a slider, a forming mold, and a cutting mechanism. The slider slides inside the bed. The main transmission mechanism includes a crankshaft, a crank connecting rod, a first transmission rod, a second transmission rod, and a third transmission rod. The crankshaft is mounted on the bed. The crank connecting rod is hinged to the eccentric part of the crankshaft. The other end of the crank connecting rod is hinged to the slider. One end of the first transmission rod is hinged to the crank connecting rod through a first rotating shaft. The first transmission rod is on the outside of the bed. A first gear disk is mounted on the rear side of the crankshaft. One end of the second transmission rod is fixed on the first gear disk. A second gear disk is provided below the first gear disk. The second gear disk meshes with the first gear disk for transmission. The third transmission rod is mounted on the second gear disk.

[0004] However, in actual shearing processes, under prolonged high-pressure impact and continuous operation, the clamping mechanism is prone to wear of parts or loosening of the clamping connection structure, which leads to a decrease in the clamping force of the clamping mechanism, resulting in unstable positioning of the blank in the mold and affecting the forming effect. Summary of the Invention

[0005] This application provides a multi-functional shearing and clamping device for a cold heading machine. This device can monitor and provide feedback on the clamping force of the clamping mechanism in real time, so as to avoid the clamping force from decreasing due to wear or loose connection structure, and ensure the stable and efficient operation of the equipment.

[0006] The multi-functional shearing and clamping device for a cold heading machine provided in this application adopts the following technical solution:

[0007] A multi-functional shearing and clamping device for a cold heading machine includes:

[0008] body;

[0009] A main drive assembly, the main drive assembly including a main drive shaft, the main drive shaft being rotatably mounted on the machine body;

[0010] A clamping assembly includes a clamping base, a main clamping arm, a secondary clamping arm, and a clamping drive. The clamping base is slidably disposed on the machine body. The main clamping arm and the secondary clamping arm are rotatably disposed on the clamping base, and the main clamping arm and the secondary clamping arm are arranged opposite to each other. The main clamping arm is provided with a first actuating part with rounded corners, and the secondary clamping arm is provided with a second actuating part. The first actuating part and the second actuating part are movably abutting against each other. The clamping drive is disposed on the clamping base and can drive the main clamping arm and the secondary clamping arm to move closer to each other.

[0011] The adjustment assembly includes a clamping adjustment component disposed on the machine body. The clamping adjustment component is convexly connected to the clamping drive component. The clamping adjustment component can act on the clamping drive component. When the clamping force of the main clamping arm and the auxiliary clamping arm decreases, the clamping adjustment component can increase the force exerted by the clamping drive component on the main clamping arm, thereby realizing real-time adjustment of the clamping force.

[0012] By adopting the above technical solution, the main clamping arm and the auxiliary clamping arm are driven to move closer to each other using the clamping drive component to clamp the blank. The clamping adjustment component on the machine body can respond promptly to changes in clamping force. If the connection between the main clamping arm and the auxiliary clamping arm becomes loose or wears down due to long-term high-pressure impact and continuous operation, resulting in a decrease in clamping force, the clamping adjustment component can adjust the clamping drive component accordingly. It monitors and adjusts the force exerted by the clamping drive component on the main clamping arm in real time, thereby ensuring the stability of the clamping force. This forms a closed-loop feedback adjustment system to ensure that the clamping force is maintained at a preset high level, thus always being able to stably clamp the blank and preventing the blank from shifting or falling off due to insufficient clamping force.

[0013] Optionally, a feeding assembly is also included, comprising a feeding cam, a feeding slide rod, and a feeding arm. A motor is mounted on the machine body, and the output end of the motor is fixedly connected to one end of the main drive shaft. The feeding cam is fixedly mounted on the main drive shaft. The feeding slide rod slides through the machine body, and a mounting base is provided at one end of the feeding slide rod. The clamping base is fixedly connected to the mounting base. A feeding rotating part is fixedly mounted on the feeding arm. The feeding arm is rotatably mounted on the machine body through the feeding rotating part. One end of the feeding arm is rotatably connected to the end of the feeding slide rod away from the mounting base, and the other end of the feeding arm is movably abutting against the feeding cam.

[0014] By adopting the above technical solution, the feeding cam is connected to the main drive shaft, and the feeding slide rod is driven to slide as the main drive shaft rotates, thereby realizing the movement of the clamping seat, which can send the sheared blank to the mold, avoiding the problem of unstable blank feeding position caused by positioning error, and improving the overall production accuracy.

[0015] Optionally, the clamping assembly further includes an opening drive component, which includes a clamping cam, a sleeve, a lifting rod, and a pressing arm. The clamping cam is frustoconical and mounted on the main drive shaft. The sleeve is fixed to the machine body, and the lifting rod slides through the sleeve. A fourth roller is rotatably mounted on one end of the lifting rod, and the fourth roller movably abuts against the clamping cam. The pressing arm is rotatably mounted on the machine body, and a pressing rod is fixed to one end of the pressing arm. The pressing rod movably abuts against one end of the main clamping arm, and the end of the pressing arm away from the pressing rod movably abuts against the end of the lifting rod away from the fourth roller. By adopting the above technical solution, the rotational motion of the main drive shaft is converted into a smooth lifting motion of the lifting rod through the cooperation of the clamping cam and the fourth roller, realizing the opening action of the clamping arm and avoiding uneven opening of the clamping arm due to unbalanced or excessively fast movement, thus avoiding blank positioning errors.

[0016] Optionally, the clamping drive includes a clamping pin and a retaining spring. The clamping seat has a receiving groove, the clamping pin is slidably disposed in the receiving groove, and one end of the clamping pin extends out of the receiving groove. The other end of the clamping pin is fixedly provided with an extension. A stepped surface is formed at the connection between the extension and the clamping pin. The end of the extension away from the clamping pin extends out of the receiving groove. A partition plate is slidably disposed on the extension. The partition plate is slidably disposed in the receiving groove. The partition plate divides the receiving groove into two independent chambers. The two chambers are respectively configured as an installation chamber and a pressurization chamber. The pressurization chamber is filled with hydraulic oil. The retaining spring is disposed in the installation chamber. The retaining spring is sleeved on the extension. One end of the retaining spring is connected to the stepped surface. The retaining spring is connected to the partition plate.

[0017] By adopting the above technical solution, when the pressing rod contacts and applies pressure to the main clamp, the closing pin, under the action of the clamping spring, will cause the main clamping arm and the auxiliary clamping arm to move closer to each other and clamp the blank. Furthermore, a partition plate is provided in the receiving groove. By changing the amount of hydraulic oil in the pressurizing chamber, the elastic coefficient of the clamping spring can be indirectly changed, thereby increasing the force of the closing pin on the main clamping arm. This effectively balances the influence of external load changes on the clamping force, enabling the clamping system to adapt to different working conditions and maintain efficient and stable performance.

[0018] Optionally, the clamping adjustment component includes a hydraulic piston and a connecting pipe. The hydraulic piston is disposed on the machine body and is located at the end of the pressing arm away from the pressing rod. A viewing window is provided on the hydraulic piston, and a scale is provided on the viewing window. One end of the connecting pipe is connected to the hydraulic piston, and the other end of the connecting pipe is connected to the pressurizing chamber. A one-way valve is provided on the connecting pipe.

[0019] By adopting the above technical solution, the hydraulic piston provides a power source for the change of the pressurization chamber. When the clamping drive drives the main clamping arm and the auxiliary clamping arm to approach each other, if the connection between the main clamping arm and the auxiliary clamping arm becomes loose or worn due to long-term high-pressure impact and continuous operation, resulting in a decrease in clamping force, the hydraulic oil discharged from the first hydraulic cylinder will increase. The adjustment component can adjust the position of the clamping cam on the main drive shaft, thereby pressing the hydraulic piston with the pressing arm. The hydraulic piston will inject hydraulic oil into the pressurization chamber, thereby realizing real-time adjustment of the clamping force and ensuring that the clamping force is always in the optimal state. In addition, a viewing window and scale are set on the hydraulic piston, so that during daily use, the operator can observe in real time whether the clamping force of the clamping component has decreased or the degree of decrease, improving the overall real-time feedback performance of the equipment and ensuring production efficiency.

[0020] Optionally, the adjusting assembly further includes a first hydraulic cylinder, which is fixedly mounted on the clamping seat. The first hydraulic cylinder is coaxially arranged with the closing pin. A first piston block is slidably arranged inside the first hydraulic cylinder, which divides the first hydraulic cylinder into two independent chambers, which are respectively designated as the first chamber and the second chamber. Hydraulic oil is injected into the first hydraulic cylinder, and one end of the extension extends out of the first chamber and is fixedly connected to the first piston block.

[0021] By adopting the above technical solution, the distance change between the main clamping arm and the auxiliary clamping arm can be flexibly converted into the amount of hydraulic oil squeezed out of the first hydraulic cylinder each time by using the first hydraulic cylinder. Each relative displacement between the main clamping arm and the auxiliary clamping arm will directly affect the amount of hydraulic oil discharged from the hydraulic cylinder. In this way, the change of clamping force can be dynamically displayed in real time, so as to facilitate subsequent adjustments.

[0022] Optionally, the adjusting assembly further includes a second hydraulic cylinder. A mounting portion is fixedly provided on the machine body. One end of the second hydraulic cylinder is fixedly mounted on the mounting portion. A second piston block is slidably disposed inside the second hydraulic cylinder. A piston rod is fixedly disposed on the second piston block. The piston rod slidably passes through the second hydraulic cylinder. The end of the piston rod away from the second piston block is connected to the clamping cam. The second piston block divides the second hydraulic cylinder into two independent chambers, which are respectively designated as a third chamber and a fourth chamber. A first liquid guide pipe and a second liquid guide pipe are provided on the second hydraulic cylinder. One end of the first liquid guide pipe communicates with the third chamber, and the other end of the first liquid guide pipe communicates with the first chamber. One end of the second liquid guide pipe communicates with the fourth chamber, and the other end of the second liquid guide pipe communicates with the second chamber.

[0023] By adopting the above technical solution, the second hydraulic cylinder is connected to the first hydraulic cylinder. This allows the change in clamping force, i.e., the relative displacement between the main clamping arm and the auxiliary clamping arm, to be directly controlled by the hydraulic oil discharged from the first hydraulic cylinder, which drives the piston of the second hydraulic cylinder to move. This indirectly controls the position of the clamping cam and achieves automatic matching between the clamping force and the equipment operating conditions.

[0024] Optionally, the adjustment assembly further includes a return spring, a limiting strip fixedly mounted on the main drive shaft, a limiting groove formed on the clamping cam, the limiting strip being slidably connected to the limiting groove, the clamping cam being slidably mounted on the main drive shaft, a fixing plate fixedly mounted on the main drive shaft, the fixing plate being located on one side of the clamping cam, the return spring being mounted on the fixing plate, one end of the return spring being fixedly connected to the fixing plate, and the other end of the return spring being fixedly connected to the clamping cam.

[0025] By adopting the above technical solution, the setting of the limit bar and the limit slide groove effectively prevents the clamping cam from shifting circumferentially, ensuring transmission accuracy; at the same time, the setting of the reset spring prevents the clamping cam from rigidly colliding during the adjustment process, and the linkage between it and the second hydraulic cylinder makes it less prone to axial displacement, effectively extending its service life.

[0026] Optionally, a limiting rod is provided at the end of the piston rod away from the second hydraulic cylinder, a clearance ring groove is provided on the clamping cam, one end of the limiting rod is telescopically connected to the end of the piston rod away from the second hydraulic cylinder, and a limiting part is fixedly provided at the other end of the limiting rod, and the limiting part is slidably disposed in the clearance ring groove.

[0027] By adopting the above technical solution, the setting of the limiting rod allows for a certain degree of freedom of extension and retraction between the piston rod and the clamping cam, avoiding stress concentration caused by rigid connection, so as to meet the position changes under different working conditions and improve the reliability and durability of the system.

[0028] Optionally, a shearing assembly is also included, comprising a first shearing cam, a second shearing cam, a shearing slide rod, a shearing blade, a first shearing arm, and a second shearing arm. Both the first and second shearing cams are fixed to the main drive shaft. The shearing slide rod slidably passes through the machine body, and a blade holder is fixed to one end of the shearing slide rod. The shearing blade is fixed to the blade holder. A first shearing rotating part is fixed to the first shearing arm, which is rotatably mounted on the machine body via the first shearing rotating part. A second shearing rotating part is fixed to the second shearing arm, which is rotatably mounted on the machine body via the first shearing rotating part. The second shearing rotating part is rotatably mounted on the machine body. The first shearing arm is located on one side of the second shearing arm. A first roller is rotatably mounted on one end of the first shearing arm, and the first roller movably abuts against the first shearing cam. An abutting rod is mounted on the other end of the first shearing arm. A second roller is rotatably mounted on one end of the second shearing arm, and the second roller movably abuts against the second shearing cam. The other end of the second shearing arm is connected to the end of the shearing sliding rod away from the blade holder. An abutting stud is mounted on the second shearing arm, and the abutting stud abuts against the end of the abutting rod away from the first shearing arm.

[0029] By adopting the above technical solution, the shearing arm is driven by a double cam to realize the movement of the shearing blade. The double cam configuration makes the shearing action more coordinated, effectively improving the shearing accuracy and work efficiency. In addition, the shearing blade is reset by using the linkage between the double cam and the first shearing arm. Compared with the traditional method of resetting by a spring, this mechanical linkage method has higher reliability and durability, and extends the service life of the equipment.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. When the clamping drive unit drives the main clamping arm and the auxiliary clamping arm to approach each other, the first hydraulic cylinder on the clamping drive unit will discharge a certain amount of hydraulic oil. This discharged hydraulic oil reflects the change in distance between the main clamping arm and the auxiliary clamping arm. If the connection between the main clamping arm and the auxiliary clamping arm becomes loose or wears down due to long-term high-pressure impact and continuous operation, resulting in a decrease in clamping force, then the hydraulic oil discharged by the first hydraulic cylinder will increase. The increased hydraulic oil will drive the clamping cam to slide on the main drive shaft, thereby increasing the hydraulic pressure in the pressurizing chamber through the pressurizing hydraulic piston. This indirectly increases the elastic coefficient of the clamping spring, effectively compensating for the decrease in clamping force caused by wear of parts and loosening of the clamping connection structure due to long-term high-pressure impact or continuous operation, ensuring that the clamping force remains at the preset high level. The horizontal clamping force ensures a stable hold on the blank, preventing it from shifting or falling due to insufficient clamping force. Compared to traditional hydraulic clamping devices, while these offer a more direct clamping effect, they are susceptible to wear and tear under continuous high-pressure impact or operation. Traditional hydraulic clamping devices cannot adjust the clamping force in real time if the grippers wear or the connections loosen; instead, the decrease in clamping force is only detected after a problem occurs. Furthermore, traditional hydraulic clamping devices are precision instruments, and damage is difficult to repair, increasing maintenance costs, lengthening production cycles, and reducing production efficiency. This technical solution not only maintains stable clamping force and responds in real time to clamping force attenuation but also extends the equipment's lifespan, ensuring production efficiency.

[0032] 2. By using a first hydraulic cylinder mounted on the clamping seat and a second hydraulic cylinder mounted on one side of the clamping cam, the distance change between the main clamping arm and the auxiliary clamping arm is flexibly converted into the amount of hydraulic oil squeezed out of the first hydraulic cylinder each time. Each relative displacement between the main clamping arm and the auxiliary clamping arm directly affects the amount of hydraulic oil discharged from the hydraulic cylinder. This allows for dynamic real-time display of changes in clamping force. At the same time, this discharge amount directly affects the position between the clamping cam and the fourth roller, thus forming a closed-loop feedback adjustment system that can monitor and adjust the action of the clamping drive component in real time. In addition, a viewing window and scale are set on the hydraulic piston, allowing operators to observe in real time whether the clamping force of the clamping component has weakened or the degree of weakening during daily use, improving the overall real-time feedback performance of the equipment and ensuring production efficiency.

[0033] 3. The shearing arm is driven by a double cam to realize the movement of the shearing blade. The double cam configuration makes the shearing action more coordinated, effectively improving the shearing accuracy and work efficiency. In addition, the shearing blade is reset by using the linkage between the double cam and the first shearing arm. Compared with the traditional spring-based reset method, this mechanical linkage method has higher reliability and durability, extending the service life of the equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the material cutting and feeding device according to an embodiment of this application.

[0035] Figure 2 This is a partial structural schematic diagram of the material cutting and feeding device according to an embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the shearing component in an embodiment of this application.

[0037] Figure 4 This is a schematic diagram of the structure of the first shearing cam in the embodiment of this application.

[0038] Figure 5 This is a schematic diagram of the structure of the second shearing cam in the embodiment of this application.

[0039] Figure 6 This is a schematic diagram of the overall structure of the feeding component in the embodiments of this application.

[0040] Figure 7 This is a schematic diagram of the overall structure of the clamping drive component in the embodiments of this application.

[0041] Figure 8 yes Figure 7 Enlarged diagram of part B.

[0042] Figure 9 yes Figure 6 An enlarged schematic diagram of part A in the middle.

[0043] Reference numerals: 1. Body; 11. Mounting part; 12. Mounting slot; 2. Main drive assembly; 21. Main drive shaft; 211. Limiting strip; 22. Motor; 3. Clamping assembly; 31. Clamping seat; 311. Receiving slot; 3111. Mounting chamber; 3112. Pressurizing chamber; 32. Main clamping arm; 321. First actuating part; 33. Secondary clamping arm; 331. Second actuating part; 34. Clamping drive component; 341. Clamping pin; 3411. Extension part; 342. Pressing spring; 343. Divider plate 35. Clamping drive component; 351. Clamping cam; 3511. Displacement ring groove; 352. Sleeve; 353. Lifting rod; 354. Pressing arm; 355. Fourth roller; 356. Pressing rod; 4. Adjustment assembly; 41. Clamping adjustment component; 411. Hydraulic piston; 412. Connecting pipe; 413. One-way valve; 42. First hydraulic cylinder; 421. First piston block; 422. First chamber; 423. Second chamber; 43. Second hydraulic cylinder; 431. Second piston block; 432. Piston rod; 4 33. Third chamber; 434. Fourth chamber; 44. First liquid guide tube; 45. Second liquid guide tube; 46. Return spring; 47. Fixing plate; 48. Limiting rod; 481. Limiting part; 5. Feeding assembly; 51. Feeding cam; 52. Feeding slide rod; 53. Feeding arm; 521. Mounting base; 531. Feeding rotating part; 54. Third roller; 6. Shearing assembly; 61. First shearing cam; 611. Connecting part; 612. First near-resting circular segment; 613. First push stroke segment; 614. First 615. First return stroke section; 62. Second shearing cam; 621. Second near-return stroke section; 622. Second push stroke section; 623. Second far-return stroke section; 624. Second return stroke section; 63. Shearing slide bar; 64. Shearing blade; 65. First shearing arm; 66. Second shearing arm; 631. Blade holder; 651. First shearing rotating part; 661. Second shearing rotating part; 652. First roller; 67. Abutment rod; 662. Second roller; 68. Abutment stud; 69. Rotating shaft. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0045] This application discloses a multi-functional shearing and clamping device for a cold heading machine.

[0046] Reference Figure 1The multi-functional shearing and clamping device of the cold heading machine includes a machine body 1, a main drive assembly 2, a shearing assembly 6, a feeding assembly 5, a clamping assembly 3, and an adjusting assembly 4. The main drive assembly 2, the shearing assembly 6, the feeding assembly 5, and the adjusting assembly 4 are all mounted on the machine body 1. The main drive assembly 2 is located on one side of the machine body 1 and is located below the shearing assembly 6. The clamping assembly 3 is located on one side of the shearing assembly 6, and the feeding assembly 5 is located between the shearing assembly 6 and the clamping assembly 3.

[0047] The machine body 1 serves as the mounting base for the entire shearing and clamping device. The main transmission component can simultaneously transmit external power to the shearing assembly 6, the feeding assembly 5, and the clamping assembly 3. The shearing assembly 6 can quickly cut out cold heading blanks. The feeding assembly 5 can feed the cut blanks into the cold heading mold. The clamping assembly 3 can stably clamp the cut blanks and, in conjunction with the feeding assembly 5, feed the blanks into the cold heading mold. The adjusting assembly 4 can check whether the clamping assembly 3 has experienced any decrease in clamping force and, by acting on the clamping assembly 3, ensure that the clamping assembly 3 has a stable clamping force.

[0048] Reference Figure 2 In this embodiment of the application, the machine body 1 is provided with an installation groove 12 for cold heading, and a mold base is embedded in the inner wall of the installation groove 12. The mold base is provided with an annular shearing blade seat and a stamping die. The machine body 1 is also provided with a conveying mechanism for conveying wire material. The conveying mechanism can pass the wire material as raw material through the shearing blade seat and enter the shearing assembly 6.

[0049] Reference Figure 1 and Figure 2 In this embodiment, the main drive assembly 2 includes a main drive shaft 21 and a motor 22. Multiple sets of first support seats are fixedly mounted on one side of the machine body 1 in the width direction. The main drive shaft 21 is rotatably mounted on the machine body 1 via the first support seats. A bearing is also provided between the main drive shaft 21 and the first support seats, and the bearing is sleeved on the main drive shaft 21. The motor 22 is fixedly mounted on the first support seats, and the output end of the motor 22 is fixedly connected to one end of the main drive shaft 21.

[0050] Reference Figure 3 In this embodiment, the shearing assembly 6 includes a first shearing cam 61, a second shearing cam 62, a shearing slide bar 63, a shearing blade 64, a first shearing arm 65, a second shearing arm 66, and an abutment stud 68. The first shearing cam 61 and the second shearing cam 62 are coaxially fixed on the main drive shaft 21. A connecting part 611 is fixedly provided on one side of the first shearing cam 61. The end of the connecting part 611 away from the first shearing cam 61 is fixedly connected to the second shearing cam 62. The first shearing cam 61 is fixedly connected to the second shearing cam 62 through the connecting part 611, and the first shearing cam 61 and the second shearing cam 62 are staggered.

[0051] Reference Figure 3 , Figure 4 and Figure 5 The outer contour of the first shear cam 61 is respectively set as a first near-rest circular segment 612, a first push segment 613, a first far-rest circular segment 614, and a first return segment 615. The first near-rest circular segment 612 is an arc segment on the first shear cam 61 centered on the minimum radius, the first push segment 613 is a curve segment on the first shear cam 61 from the minimum radius to the maximum radius, the first far-rest circular segment 614 is an arc segment on the first shear cam 61 centered on the maximum radius, and the first return segment 615 is a curve segment on the first shear cam 61 from the maximum radius to the minimum radius. Similarly, the outer contour of the second shear cam 62 is respectively set as a second near-rest circular segment 621, a second push segment 622, a second far-rest circular segment 623, and a second return segment 624.

[0052] The first near-resting circular segment 612 and the second near-resting circular segment 621 have the same radius, the first far-resting circular segment 614 and the second far-resting circular segment 623 have the same radius, the length of the first far-resting circular segment 614 is much greater than the length of the second far-resting circular segment 623, the first advancing segment 613 and the second advancing segment 622 are set at an angle to each other, and the angle is acute; the first returning segment 615 and the second returning segment 624 are set at an angle to each other, and the angle is obtuse.

[0053] The shearing slide bar 63 is slidably mounted on the machine body 1, with one end of the shearing slide bar 63 extending into the mounting groove 12. A blade holder 631 is fixedly mounted on one end of the shearing slide bar 63 located in the mounting groove 12, and a hinge is provided on the other end of the shearing slide bar 63. The shearing blade 64 is fixedly mounted on the blade holder 631 and is configured as a circular blade.

[0054] Two sets of second support seats are fixed on the outer wall of the machine body 1. The rotating shaft 69 is rotatably mounted on the machine body 1 through the two sets of second support seats. The first shearing arm 65 is provided with a first shearing rotating part 651 on its outer wall along its own length direction. The first shearing rotating part 651 is rotatably connected to the rotating shaft 69. The first shearing arm 65 is rotatably mounted on the machine body 1 through the first shearing rotating part 651. The second shearing arm 66 is provided with a second shearing rotating part 661. The second shearing rotating part 661 is rotatably connected to the rotating shaft 69. The second shearing arm 66 is rotatably mounted on the machine body 1 through the second shearing rotating part 661. The first shearing arm 65 is located on one side of the second shearing arm 66, and the first shearing arm 65 and the second shearing arm 66 are arranged crosswise.

[0055] The first shear arm 65 has a first roller 652 rotatably mounted at one end. The first roller 652 is located between the first shear cam 61 and the machine body 1. The first roller 652 and the first shear cam 61 are in movable contact. The other end of the first shear arm 65 is provided with an abutment rod 67. The abutment rod 67 is located on the side of the first shear arm 65 away from the machine body 1. One end of the abutment rod 67 is provided with a thread, and the abutment rod 67 is threadedly connected to the first shear arm 65.

[0056] The second shear arm 66 has a second roller 662 rotatably mounted on one end. The second roller 662 is located on the side of the second shear cam 62 away from the machine body 1. The second roller 662 is in movable contact with the second shear cam 62. The other end of the second shear arm 66 is rotatably connected to one end of the hinge part, and the other end of the hinge part is rotatably connected to the shear sliding rod 63.

[0057] A mounting portion 11 is fixedly mounted on the second shear arm 66. An abutment stud 68 passes through the mounting portion 11 and is threadedly connected to the mounting portion 11. One end of the abutment stud 68 abuts against the end of the abutment rod 67 away from the first shear arm 65. By adjusting the abutment stud 68, the first roller 652 can be stably pressed on the first shear cam 61, and the second roller 662 can also be stably pressed on the second shear cam 62. In this way, the torque of the main drive shaft 21 can be stably transmitted to the first shear arm 65 and the second shear arm 66, thereby ensuring the continuity of the shearing action.

[0058] More specifically, when the main drive shaft 21 drives the first shearing cam 61 and the second shearing cam 62 to rotate, when the second roller 662 moves from the end of the second push section 622 to the second far rest section 623, the first roller 652 is moving from the end of the first return section 615 to the first near rest section 612. At this time, the end of the first shearing arm 65 with the first roller 652 and the end of the second shearing arm 66 with the second roller 662 simultaneously swing away from the machine body 1. The other end of the second shearing arm 66 drives the shearing sliding rod 63 to slide towards the mounting groove 12, thereby achieving the shearing blade 6 4. Cutting the wire: When the first roller 652 moves from the end of the first push section 613 to the first far rest section 614, the second roller 662 is moving from the end of the second far rest section 623 to the second return section 624. At this time, the end of the first shearing arm 65 with the first roller 652 and the end of the second shearing arm 66 with the second roller 662 simultaneously swing towards the machine body 1. The other end of the second shearing arm 66 drives the shearing sliding rod 63 to slide towards the original mounting groove 12. The shearing blade 64 is reset, and the wire is fed into the circular blade. The shearing blade 64 completes one shearing action.

[0059] Reference Figure 6 and Figure 7In this embodiment, the feeding assembly 5 includes a feeding cam 51, a feeding slide bar 52, a feeding arm 53, and a tensioning member. The feeding cam 51 is fixed on the main drive shaft 21 and is located on the side of the second shearing cam 62 opposite to the first shearing cam 61. Similarly, based on the division of the outer contour of the first shearing cam 61, the outer contour of the feeding cam 51 is respectively set as a third near-rest segment, a third push segment, a third far-rest segment, and a third return segment.

[0060] The feeding slide rod 52 is slidably mounted on the machine body 1, and one end of the feeding slide rod 52 extends into the mounting groove 12. A mounting base 521 is fixed on one end of the feeding slide rod 52 located in the mounting groove 12, and a connecting base is fixed on the other end of the feeding slide rod 52. A first waist-shaped groove is opened on the connecting base.

[0061] A feeding rotating part 531 is fixedly provided on the side wall along the length direction of the feeding arm 53. The feeding rotating part 531 is rotatably connected to the rotating shaft 69. The feeding arm 53 is rotatably mounted on the machine body 1 through the feeding rotating part 531. A third roller 54 is rotatably provided at one end of the feeding arm 53. The third roller 54 is in movable contact with the feeding cam 51. A second waist-shaped groove is provided at the end of the feeding arm 53 away from the third roller 54. A connecting bolt is provided in the second waist-shaped groove. The feeding arm 53 is fixedly connected to the end of the feeding sliding rod 52 with the first waist-shaped groove through the connecting bolt.

[0062] The tensioning element is set as an elastic telescopic rod, which is fixed on the machine body 1. The telescopic end of the tensioning element is in contact with the feeding arm 53.

[0063] Reference Figure 7 and Figure 8 In this embodiment, the clamping assembly 3 includes a clamping seat 31, a main clamping arm 32, a secondary clamping arm 33, a clamping drive 34, an opening clamping drive 35, and a clamping adjustment member 41. The clamping seat 31 is fixed on the mounting base 521. The main clamping arm 32 and the secondary clamping arm 33 are rotatably mounted on the clamping seat 31. The main clamping arm 32 and the secondary clamping arm 33 are symmetrically arranged along the width direction of the clamping seat 31. A first actuating part 321 is provided on the outer wall of the main clamping arm 32 facing the secondary clamping arm 33. The end of the first actuating part 321 away from the main clamping arm 32 is provided with a rounded corner. A second actuating part 331 is provided on the outer wall of the secondary clamping arm 33 facing the main clamping arm 32. The first actuating part 321 and the second actuating part 331 move and abut against each other.

[0064] The main clamping arm 32 is provided with a first clamping part. Once the main clamping arm 32 is far from the clamping seat 31, a third waist-shaped groove is opened. The first clamping part is detachably connected to the end of the main clamping arm 32 far from the clamping seat 31 by bolts. The third waist-shaped groove can finely adjust the position of the first clamping part. Similarly, the auxiliary clamping arm 33 is also provided with a second clamping part, which is provided in the same way as the first clamping part.

[0065] The clamping drive component 34 includes a clamping pin 341 and a clamping spring 342. A receiving groove 311 is provided on the clamping seat 31. The clamping pin 341 is slidably disposed within the receiving groove 311, with one end of the clamping pin 341 extending out of the receiving groove 311. An extension portion 3411 is fixedly provided at the other end of the clamping pin 341. A stepped surface is formed at the connection between the extension portion 3411 and the clamping pin 341. The end of the extension portion 3411 away from the clamping pin 341 extends out of the receiving groove 311. A separator is slidably provided on the extension portion 3411. Plate 343, partition plate 343 is slidably disposed in receiving groove 311. Partition plate 343 divides receiving groove 311 into two independent chambers. The two chambers are respectively configured as installation chamber 3111 and pressurization chamber 3112. Pressurization chamber 3112 is filled with hydraulic oil. Pressurizing spring 342 is disposed in installation chamber 3111. Pressurizing spring 342 is sleeved on extension 3411. One end of pressurizing spring 342 is connected to stepped surface. Pressurizing spring 342 is connected to partition plate 343.

[0066] The clamping drive component 35 includes a clamping cam 351, a sleeve 352, a lifting rod 353, and a pressing arm 354. The clamping cam 351 is located on the side of the feeding cam 51 away from the second shearing cam 62. The outer peripheral surface of the clamping cam 351 is set as an inclined surface, that is, the area of ​​the side of the clamping cam 351 close to the feeding cam 51 is larger than the area of ​​the other side of the clamping cam 351.

[0067] Based on the division of the outer contour of the first shearing cam 61, the outer contour of the clamping cam 351 is similarly set as the fourth near rest segment, the fourth push segment, the fourth far rest segment, and the fourth return segment.

[0068] The sleeve 352 is fixed on the machine body 1 and is located above the clamping cam 351. The lifting rod 353 slides through the sleeve 352. A fourth roller 355 is rotatably provided at one end of the lifting rod 353. The fourth roller 355 is shaped like a frustum cone and is in movable contact with the clamping cam 351.

[0069] A pressing rotating seat is fixed on the body 1. The pressing arm 354 is rotatably mounted on the pressing rotating seat and is located above the lifting rod 353. The pressing arm 354 is orthogonally arranged with the main clamping arm 32. A pressing rod 356 is fixed at one end of the pressing arm 354. The pressing rod 356 is parallel to the main clamping arm 32. A pressing roller is provided at the end of the main clamping arm 32 away from the first clamping part. The pressing rod 356 and the pressing roller are in movable contact. The end of the pressing arm 354 away from the pressing rod 356 is in movable contact with the end of the lifting rod 353 away from the fourth roller 355.

[0070] More specifically, the main drive shaft 21 drives the clamping cam 351 to rotate, and the lifting rod 353 slides back and forth within the sleeve 352. When the fourth roller 355 moves from the fourth push segment to the fourth far rest segment of the clamping cam 351, the end of the lifting rod 353 away from the clamping cam 351 gradually lifts the end of the pressing arm 354 away from the pressing rod 356. The pressing rod 356 presses the main clamping arm 32 downward through the pressing roller, and the closing pin 341 is gradually pressed down, thereby achieving clamping. The clamping drive of component 3: When the fourth roller 355 moves from the end of the fourth far resting segment to the fourth return segment, the end of the lifting rod 353 away from the clamping cam 351 gradually moves downward, and the end of the pressing arm 354 away from the pressing rod 356 also gradually falls back. At the same time, the clamping pin 341 is pushed upward by the action of the clamping spring 342, and the first clamping part on the main clamping arm 32 and the second clamping part on the auxiliary clamping arm 33 approach each other, thereby realizing the clamping drive of clamping component 3.

[0071] Reference Figure 7 , Figure 8 and Figure 9 In this embodiment, the adjustment component 4 includes a first hydraulic cylinder 42, a second hydraulic cylinder 43, a return spring 46, and a clamping adjustment component 41. The first hydraulic cylinder 42 is fixedly mounted on the clamping seat 31. The first hydraulic cylinder 42 and the clamping pin 341 are coaxially arranged. A first piston block 421 is slidably arranged inside the first hydraulic cylinder 42. The first piston block 421 divides the first hydraulic cylinder 42 into two independent chambers, which are respectively set as the first chamber 422 and the second chamber 423. Hydraulic oil is injected into the first hydraulic cylinder 42. One end of the extension 3411 away from the clamping pin 341 extends out of the first chamber 422 and is fixedly connected to the first piston block 421.

[0072] A mounting part 11 is fixedly provided on the body 1. One end of the second hydraulic cylinder 43 is fixedly provided on the mounting part 11. A second piston block 431 is slidably provided inside the second hydraulic cylinder 43. A piston rod 432 is fixedly provided on the second piston block 431. The piston rod 432 slidably passes through the second hydraulic cylinder 43. The end of the piston rod 432 away from the second piston block 431 is connected to the clamping cam 351. The second piston block 431 divides the second hydraulic cylinder 43 into two independent chambers. The two independent chambers are respectively set as a third chamber 433 and a fourth chamber 434. A first liquid guide pipe 44 and a second liquid guide pipe 45 are provided on the second hydraulic cylinder 43. One end of the first liquid guide pipe 44 is connected to the third chamber 433, and the other end of the first liquid guide pipe 44 is connected to the first chamber 422. One end of the second liquid guide pipe 45 is connected to the fourth chamber 434, and the other end of the second liquid guide pipe 45 is connected to the second chamber 423.

[0073] More specifically, a limiting strip 211 is fixedly mounted on the main drive shaft 21, and a limiting groove is formed on the clamping cam 351. The limiting groove is slidably connected to the limiting strip 211, and the clamping cam 351 slides through the main drive shaft 21. A fixing plate 47 is provided between the clamping cam 351 and the feeding cam 51. The fixing plate 47 is fixedly mounted on the main drive shaft 21, and a return spring 46 is mounted on the fixing plate 47. One end of the return spring 46 is fixedly connected to the fixing plate 47, and the other end of the return spring 46 is fixedly connected to the clamping cam 351. The initial state of the return spring 46 is the tightened state.

[0074] A limiting rod 48 is provided at the end of the piston rod 432 away from the second hydraulic cylinder 43. A clearance ring groove 3511 is provided on the side of the clamping cam 351 away from the feeding cam 51. One end of the limiting rod 48 is telescopically connected to the end of the piston rod 432 away from the second hydraulic cylinder 43. A limiting part 481 is fixed at the other end of the limiting rod 48. The limiting part 481 is slidably disposed in the clearance ring groove 3511.

[0075] Reference Figure 6 , Figure 7 and Figure 8 In this embodiment, the clamping adjustment component 41 includes a hydraulic piston 411 and a connecting pipe 412. An "L"-shaped mounting plate is fixed on the side of the pressing rotating seat away from the pressing rod 356. The hydraulic piston 411 is fixed on the mounting plate and has a viewing window so that the clamping force of the clamping component 3 can be observed in real time to see whether the clamping force has decreased and the degree of decrease. The hydraulic piston 411 is located above the pressing arm 354. A connecting pipe 412 is fixed on the hydraulic piston 411. One end of the connecting pipe 412 is connected to the hydraulic piston 411, and the other end of the connecting pipe 412 is connected to the pressurizing chamber 3112. A one-way valve 413 is provided on the connecting pipe 412.

[0076] It is worth noting that under normal conditions, when the lifting rod 353 lifts the end of the pressing arm 354 away from the pressing rod 356, the pressing arm 354 cannot effectively contact the telescopic end of the hydraulic piston 411.

[0077] More specifically, under normal conditions, the clamping pin 341, under the action of the clamping spring 342, lifts the main clamping arm 32 upwards. The extension part 3411 drives the piston block to slide in the first hydraulic cylinder 42, the first chamber 422 is compressed, and the hydraulic oil in the first chamber 422 enters the third chamber 433 through the first guide pipe 44. The second piston block 431 will slide towards the fourth chamber 434, and the piston rod 432 will gradually retract inwards. At this time, since the limiting rod 48 and the piston rod 432 are telescopic, and the inward retraction stroke of the piston rod 432 is equal to the telescopic stroke of the limiting rod 48 on the piston rod 432, and the clamping cam 351 is limited by the return spring 46, the position of the clamping cam 351 on the main drive shaft 21 does not change, and the upward stroke of the lifting rod 353 remains unchanged.

[0078] In this embodiment, when the connection of the clamping components in the clamping assembly 3 becomes loose, the clamping force decreases, i.e., the fit clearance at the connection in the clamping assembly 3 increases (e.g., the clearance of a rotary joint or sliding joint). This clearance allows the components to generate additional relative movement beyond their original motion constraints. For example, if the rotary joint between the main clamping arm 32 and the clamping seat 31 becomes loose, the range of motion of the main clamping arm 32 increases due to the presence of the clearance; similarly, if the rotary joint between the auxiliary clamping arm 33 and the clamping seat 31 becomes loose, the range of motion of the main clamping arm 32 increases due to the presence of the clearance.

[0079] In summary, once the range of motion of the main clamping arm 32 increases, the upward movement distance of the clamping pin 341 will increase, thereby increasing the sliding stroke of the extension 3411 driving the first piston block 421 within the first hydraulic cylinder 42. Excess hydraulic oil in the first chamber 422 will be injected into the third chamber 433. At this time, the retraction stroke of the piston rod 432 increases. Since, under normal conditions, the inward retraction stroke of the piston rod 432 is equal to the extension and retraction stroke of the limit rod 48 on the piston rod 432, the piston rod 432 will then drive the clamping cam 351 away from the feed cam via the limit rod 48. The directional sliding of cam 51 increases the sway of pressing arm 354. During this process, the end of pressing arm 354 away from pressing rod 356 presses the telescopic end of hydraulic piston 411. Then, the hydraulic oil in hydraulic piston 411 is injected into pressurized chamber 3112 through first guide pipe 44. At this time, clamping pin 341 has already pressed against one end of main clamping arm 32 and can no longer move. Divider plate 343 will press the clamping spring 342 against the side of installation chamber 3111, directly increasing the elastic effect of clamping spring 342 relative to clamping pin 341, thereby compensating for the clamping force attenuated due to the connection structure.

[0080] Meanwhile, the first liquid guide tube 44 is equipped with a one-way valve 413, so the hydraulic oil injected into the pressurized chamber 3112 will not be discharged. The extension and retraction end of the hydraulic piston 411 will remain at the position when the previous step was completed. Then, if the main clamping arm 32 does not loosen further to cause the range of motion to continue to increase, the pressing arm 354 will not be able to form an effective contact with the extension and retraction end of the hydraulic piston 411.

[0081] The implementation principle of the multi-functional shearing and clamping device of the cold heading machine in this application embodiment is as follows: the conveying mechanism sends the wire to the shearing blade 64, the starting motor 22 drives the main drive shaft 21 to rotate, the shearing blade 64 completes the shearing of the wire under the drive of the first shearing cam 61 and the second shearing cam 62, the clamping component 3 clamps the cut blank, and the feeding component 5 sends the blank to the cold heading mold;

[0082] During this process, the clamping force is detected by the first piston cylinder set on the clamping seat 31 and the second hydraulic cylinder 43 set on the machine body 1. Once the clamping force is reduced, the clamping cam 351 can be moved on the main drive shaft 21 by the second hydraulic cylinder 43, thereby increasing the swing amplitude of the pressing arm 354 to squeeze the hydraulic piston 411 and inject the hydraulic oil in the hydraulic piston 411 into the pressurization chamber 3112, which indirectly increases the elastic coefficient of the clamping spring 342, thereby compensating for the reduction of clamping force caused by loose connection structure or wear of clamping parts, and ensuring the clamping stability of clamping assembly 3.

[0083] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-functional shearing and clamping device for a cold heading machine, characterized in that, include: fuselage (1); The main drive assembly (2) includes a main drive shaft (21) which is rotatably mounted on the machine body (1). The clamping assembly (3) includes a clamping base (31), a main clamping arm (32), a secondary clamping arm (33), and a clamping drive (34). The clamping base (31) is slidably disposed on the machine body (1). The main clamping arm (32) and the secondary clamping arm (33) are both rotatably disposed on the clamping base (31). The main clamping arm (32) and the secondary clamping arm (33) are arranged opposite to each other. The main clamping arm (32) is provided with a first actuating part (321) with rounded corners, and the secondary clamping arm (33) is provided with a second actuating part (331). The first actuating part (321) and the second actuating part (331) are in movable contact. The clamping drive (34) is provided on the clamping seat (31) and can drive the main clamping arm (32) and the secondary clamping arm (33) to move closer to each other. Adjustment component (4), the adjustment component (4) includes a clamping adjustment component (41), the clamping adjustment component (41) is disposed on the machine body (1), the clamping adjustment component (41) is connected to the clamping drive component (34) in a transmission manner, the clamping adjustment component (41) can act on the clamping drive component (34), when the clamping force of the main clamping arm (32) and the auxiliary clamping arm (33) decreases, the clamping adjustment component (41) can increase the force of the clamping drive component (34) on the main clamping arm (32), thereby realizing the real-time adjustment of the clamping force; The clamping assembly (3) further includes an opening clamping drive (35), which includes a clamping cam (351), a sleeve (352), a lifting rod (353), and a pressing arm (354). The clamping cam (351) is frustoconical and is mounted on the main drive shaft (21). The sleeve (352) is fixed to the machine body (1). The lifting rod (353) slides through the sleeve (352). One end of the lifting rod (353) rotates... A fourth roller (355) is movably provided, which is in contact with the clamping cam (351). The pressing arm (354) is rotatably mounted on the machine body (1). A pressing rod (356) is fixedly provided at one end of the pressing arm (354). The pressing rod (356) is in contact with one end of the main clamping arm (32). The end of the pressing arm (354) away from the pressing rod (356) is in contact with the end of the lifting rod (353) away from the fourth roller (355). The clamping drive (34) includes a clamping pin (341) and a retaining spring (342). The clamping seat (31) has a receiving groove (311). The clamping pin (341) is slidably disposed in the receiving groove (311), and one end of the clamping pin (341) extends out of the receiving groove (311). The other end of the clamping pin (341) is fixedly provided with an extension (3411). A stepped surface is formed at the connection between the extension (3411) and the clamping pin (341). The end of the extension (3411) away from the clamping pin (341) extends out of the receiving groove (311). The extension (3411) is slidably disposed on... A partition plate (343) is provided, which is slidably disposed in the receiving groove (311). The partition plate (343) divides the receiving groove (311) into two independent chambers, which are respectively configured as an installation chamber (3111) and a pressurization chamber (3112). The pressurization chamber (3112) is filled with hydraulic oil. A retaining spring (342) is disposed in the installation chamber (3111). The retaining spring (342) is sleeved on the extension (3411). One end of the retaining spring (342) is connected to the stepped surface. The retaining spring (342) is connected to the partition plate (343). The clamping adjustment component (41) includes a hydraulic piston (411) and a connecting pipe (412). The hydraulic piston (411) is mounted on the body (1) and is located at the end of the pressing arm (354) away from the pressing rod (356). A viewing window is provided on the hydraulic piston (411), and a scale is provided on the viewing window. One end of the connecting pipe (412) is connected to the hydraulic piston (411), and the other end of the connecting pipe (412) is connected to the pressurizing chamber (3112). A one-way valve (413) is provided on the connecting pipe (412).

2. The multi-functional shearing and clamping device for a cold heading machine according to claim 1, characterized in that: It also includes a feeding assembly (5), which includes a feeding cam (51), a feeding slide bar (52), and a feeding arm (53). A motor (22) is installed on the machine body (1). The output end of the motor (22) is fixedly connected to one end of the main drive shaft (21). The feeding cam (51) is fixed on the main drive shaft (21). The feeding slide bar (52) slides through the machine body (1). One end of the feeding slide bar (52) is provided with a mounting bracket. Mounting base (521), the clamping base (31) is fixedly connected to the mounting base (521), the feeding arm (53) is fixedly provided with a feeding rotating part (531), the feeding arm (53) is rotatably mounted on the machine body (1) through the feeding rotating part (531), one end of the feeding arm (53) is rotatably connected to the end of the feeding sliding rod (52) away from the mounting base (521), and the other end of the feeding arm (53) is movably abutted against the feeding cam (51).

3. The multi-functional shearing and clamping device for a cold heading machine according to claim 2, characterized in that: The adjustment assembly (4) further includes a first hydraulic cylinder (42), which is fixed on the clamping seat (31). The first hydraulic cylinder (42) and the closing pin (341) are coaxially arranged. A first piston block (421) is slidably arranged inside the first hydraulic cylinder (42). The first piston block (421) divides the first hydraulic cylinder (42) into two independent chambers, which are respectively set as the first chamber (422) and the second chamber (423). Hydraulic oil is injected into the first hydraulic cylinder (42). One end of the extension (3411) extends out of the first chamber (422) and is fixedly connected to the first piston block (421).

4. The multi-functional shearing and clamping device for a cold heading machine according to claim 3, characterized in that: The adjusting assembly (4) further includes a second hydraulic cylinder (43). A mounting part (11) is fixedly provided on the machine body (1). One end of the second hydraulic cylinder (43) is fixedly provided on the mounting part (11). A second piston block (431) is slidably provided inside the second hydraulic cylinder (43). A piston rod (432) is fixedly provided on the second piston block (431). The piston rod (432) slidably passes through the second hydraulic cylinder (43). The end of the piston rod (432) away from the second piston block (431) is connected to the clamping cam (351). The second piston block (431) The second hydraulic cylinder (43) is divided into two independent chambers, which are respectively designated as the third chamber (433) and the fourth chamber (434). The second hydraulic cylinder (43) is provided with a first liquid guide pipe (44) and a second liquid guide pipe (45). One end of the first liquid guide pipe (44) is connected to the third chamber (433), and the other end of the first liquid guide pipe (44) is connected to the first chamber (422). One end of the second liquid guide pipe (45) is connected to the fourth chamber (434), and the other end of the second liquid guide pipe (45) is connected to the second chamber (423).

5. A multi-functional shearing and clamping device for a cold heading machine according to claim 4, characterized in that: The adjustment assembly (4) also includes a return spring (46). A limiting strip (211) is fixed on the main drive shaft (21). A limiting groove is opened on the clamping cam (351). The limiting strip (211) is slidably connected to the limiting groove. The clamping cam (351) is slidably disposed on the main drive shaft (21). A fixing plate (47) is fixed on the main drive shaft (21). The fixing plate (47) is located on one side of the clamping cam (351). The return spring (46) is disposed on the fixing plate (47). One end of the return spring (46) is fixedly connected to the fixing plate (47), and the other end of the return spring (46) is fixedly connected to the clamping cam (351).

6. A multi-functional shearing and clamping device for a cold heading machine according to claim 5, characterized in that: A limiting rod (48) is provided at one end of the piston rod (432) away from the second hydraulic cylinder (43). A clearance ring groove (3511) is provided on the clamping cam (351). One end of the limiting rod (48) is telescopically connected to the end of the piston rod (432) away from the second hydraulic cylinder (43). A limiting part (481) is fixed at the other end of the limiting rod (48). The limiting part (481) is slidably disposed in the clearance ring groove (3511).

7. A multi-functional shearing and clamping device for a cold heading machine according to claim 1, characterized in that: It also includes a shearing assembly (6), which includes a first shearing cam (61), a second shearing cam (62), a shearing slide bar (63), a shearing blade (64), a first shearing arm (65), and a second shearing arm (66). The first shearing cam (61) and the second shearing cam (62) are both fixed on the main drive shaft (21). The shearing slide bar (63) slides through the machine body (1). One end of the shearing slide bar (63) is fixed with a blade holder (631). The shearing blade (64) is fixed on the blade holder (631). The first shearing arm (65) is fixed with a first shearing rotating part (651). The first shearing arm (65) is rotatably mounted on the machine body (1) through the first shearing rotating part (651). The second shearing arm (66) is fixed with a second shearing rotating part (661). The second shearing arm (66) is connected to the machine body (1) through the first shearing rotating part (651). The second shearing rotating part (661) is rotatably mounted on the machine body (1). The first shearing arm (65) is located on one side of the second shearing arm (66). One end of the first shearing arm (65) is rotatably provided with a first roller (652), which is in movable contact with the first shearing cam (61). The other end of the first shearing arm (65) is provided with an abutment rod (67). One end of the second shearing arm (66) is rotatably provided with a second roller (662), which is in movable contact with the second shearing cam (62). The other end of the second shearing arm (66) is connected to the end of the shearing sliding rod (63) away from the knife holder (631). The second shearing arm (66) is provided with an abutment stud (68), which abuts with the end of the abutment rod (67) away from the first shearing arm (65).

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