Feeding and discharging device

Abstract

The invention relates to the technical field of shaft part machining equipment, in particular to a feeding and discharging device which comprises a feeding conveying mechanism, a driving mechanism, a feeding clamping jaw, a discharging clamping jaw and a discharging conveying mechanism, the feeding clamping jaw is used for clamping a workpiece on the feeding conveying mechanism, the discharging clamping jaw is used for clamping a workpiece on a thread rolling machine, and the discharging conveying mechanism is used for conveying the workpiece on the thread rolling machine. The driving mechanism is used for driving the feeding clamping jaw to move between the feeding conveying mechanism and the thread rolling machine, and the driving mechanism is further used for driving the discharging clamping jaw to move between the thread rolling machine and the discharging conveying mechanism. Automatic feeding and discharging of workpieces are achieved, manual operation is replaced, and the thread rolling machining efficiency is remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of shaft parts processing equipment, and in particular to a loading and unloading device. Background Art

[0002] Some shaft parts require thread rolling during production.

[0003] In the prior art, when thread rolling shaft parts, the shaft parts are usually manually placed on the thread rolling machine. After the thread rolling process is completed, the shaft parts are manually removed from the thread rolling machine. This manual loading and unloading method of shaft parts results in low processing efficiency, wastes manpower, and high processing costs. Summary of the Invention

[0004] In order to improve the processing efficiency of shaft parts, the present application provides a loading and unloading device.

[0005] The present application provides a loading and unloading device, which adopts the following technical solution: A loading and unloading device includes a loading and conveying mechanism, a driving mechanism, a loading jaw, a unloading jaw and a unloading conveying mechanism, wherein the loading jaw is used to clamp the workpiece on the loading and conveying mechanism, and the unloading jaw is used to clamp the workpiece on the thread rolling machine. The driving mechanism is used to drive the loading jaw to move between the loading and conveying mechanism and the thread rolling machine, and the driving mechanism is also used to drive the unloading jaw to move between the thread rolling machine and the unloading conveying mechanism.

[0006] By adopting the above technical solution, the loading and unloading jaws of the loading and unloading mechanism, the drive mechanism, and the unloading and unloading mechanism work together to achieve automated loading and unloading of workpieces, replacing manual operations and significantly improving thread rolling efficiency. The modular integrated design also reduces the equipment's footprint, lowering both labor and processing costs. Furthermore, the loading and unloading jaws are separately configured for loading and unloading, ensuring timely loading after unloading is complete, minimizing the time the thread rolling machine spends idling, improving smoother operation, and increasing production efficiency.

[0007] Optionally, the loading clamp and the unloading clamp both include a clamping portion, and a pad is provided on the clamping portion, and the pad is used to contact the workpiece.

[0008] By adopting the above technical solution, a pad is provided at the clamping part to avoid direct rigid contact between the clamping jaws and the workpiece, thereby reducing scratches or deformation on the workpiece surface; the friction coefficient design of the pad can enhance the clamping stability and prevent the workpiece from slipping during transportation.

[0009] Optionally, both the loading clamp and the unloading clamp include an extension portion, which extends along the axial direction of the workpiece and is located on a side of the clamping portion close to the driving mechanism in the axial direction of the workpiece.

[0010] By adopting the above technical solution, the axial extension design of the extension part enables the extension part to cover a longer axial area of ​​the workpiece, so that when the loading clamp clamps the workpiece to place the workpiece into the thread rolling machine, or when the unloading clamp clamps the workpiece to take the workpiece out of the thread rolling machine, the extension part can extend into the thread rolling machine, while ensuring stable clamping of the workpiece and avoiding interference between the drive mechanism and the thread rolling machine.

[0011] Optionally, a driving source is further included, wherein the driving source is used to push the workpiece on the thread rolling machine to move, and the driving source is used to push the workpiece to move axially.

[0012] By adopting the above technical solution, the setting of the driving source can realize the precise axial movement of the workpiece on the thread rolling machine, ensure that the workpiece moves into place on the thread rolling machine, ensure the consistency of the workpiece processing position, avoid manual adjustment errors, and improve the thread rolling processing accuracy and yield rate.

[0013] Optionally, the loading and conveying mechanism includes a loading and conveying component and a positioning component, the loading and conveying component and the positioning component are arranged radially along the workpiece, the positioning component includes a positioning frame, a positioning drive source and a positioning block, the positioning frame, the positioning drive source and the positioning block are arranged axially along the workpiece, the loading and conveying component is used to convey the workpiece to the positioning frame, the positioning drive source is used to drive the workpiece to move toward the direction close to the positioning block, and the positioning block is used to interfere with the workpiece.

[0014] By adopting the above technical solution, through the radial arrangement design of the feeding and conveying assembly and the positioning assembly, and the axial arrangement design of the positioning frame, the positioning drive source and the positioning block, the layout is optimized to avoid interference between the feeding and conveying assembly and the positioning drive source and the positioning frame, thereby realizing automatic conveying and precise positioning of the workpiece; the positioning drive source drives the workpiece to move until it contacts the positioning block, ensuring that the axial position of the workpiece is fixed, thereby reducing the positioning deviation in the subsequent clamping of the feeding clamp.

[0015] Optionally, a positioning groove is provided on the upper surface of the positioning frame, and positioning inclined surfaces for resisting and limiting the workpiece are formed on the two opposite groove walls of the positioning groove. A limit block is provided at the end of the positioning inclined surface away from the feeding and conveying assembly, and the limit block is used to block and limit the workpiece.

[0016] By adopting the above technical solution, the double-bevel structure of the positioning groove radially limits the workpiece. The bevel design can also adapt to the self-centering function of workpieces of different diameters. The limit block radially blocks the workpiece to prevent the workpiece from rolling out of the positioning groove under the action of inertia when it is transported from the loading and conveying assembly to the positioning frame.

[0017] Optionally, the positioning assembly also includes an opening and closing structure, which includes a closing button, a rotating piece, a transmission rod and a rotating block, the closing button is electrically connected to the positioning drive source, the rotating piece is rotatably set on the positioning block, the rotation axis of the rotating piece is perpendicular to the driving direction of the positioning drive source, the rotating piece is used to interfere with the axial end of the workpiece and the positioning block, a reset elastic member is provided between the rotating piece and the positioning block, the reset elastic member is used to drive the rotating piece to rotate in a direction close to the positioning frame, the transmission rod is rotatably connected to the rotating piece, the transmission rod is slidably set on the positioning block along a direction parallel to the driving direction of the positioning drive source, the rotating block is rotatably connected to the transmission rod, the rotating block is rotatably set on the positioning block, and the rotating block is used to interfere with the closing button.

[0018] By adopting the above technical solution, when the workpiece is transported to the positioning frame through the loading and conveying assembly, the position of each workpiece on the positioning frame is different due to vibration, different workpiece sizes, etc. The opening and closing structure of the present application realizes automatic control of the positioning process through mechanical linkage: when the workpiece is in place, the rotating piece contacts the workpiece and triggers the closing button, automatically stopping the positioning drive source to avoid excessive squeezing of the workpiece, and is suitable for workpieces of different sizes and different positions; the reset elastic part ensures that the rotating piece is quickly reset, thereby improving the reliability of continuous operation of the equipment, and the mechanical transmission is stable and reliable.

[0019] Optionally, the opening and closing structure also includes an opening button and a trigger member, the opening button is arranged on the positioning frame, the opening button is electrically connected to the positioning drive source, the trigger member is slidably arranged on the positioning frame in the direction toward the opening button, the trigger member is used to interfere with the opening button, when the workpiece is conveyed to the positioning frame, the trigger member interferes with the outer peripheral surface of the workpiece, and a retraction elastic member is provided between the trigger member and the positioning frame, the retraction elastic member is used to drive the trigger member to slide in the direction away from the opening button.

[0020] By adopting the above technical solution, the linkage design of the open button and the trigger member realizes automatic start and stop: when the workpiece enters the positioning frame, the trigger member is pressed and slides, the open button is triggered and the positioning drive source is started; the retracting elastic member ensures the reset of the trigger member, reduces the risk of accidental touch, and improves system safety.

[0021] Optionally, an elastic pad is provided on the side wall of the positioning block facing the positioning frame.

[0022] By adopting the above technical solution, the elastic pad on the positioning block can absorb the impact force when the workpiece contacts the positioning block, avoiding damage to the workpiece surface; at the same time, the deformation characteristics of the elastic pad can compensate for the dimensional tolerance of the workpiece and enhance positioning tolerance.

[0023] Optionally, it also includes a frame and a fixing part, wherein the frame is provided with an adjusting rod, the adjusting rod extends along the axial direction of the workpiece, the positioning drive source, the positioning frame and the positioning block are all slidably arranged on the adjusting rod, and the positioning frame, the positioning drive source and the positioning block are all fixed on the adjusting rod by the fixing part.

[0024] By adopting the above technical solution, the design of the adjustment rod and the sliding assembly allows flexible adjustment of the axial position of the positioning drive source, the positioning frame and the positioning block to adapt to the processing requirements of workpieces of different lengths and improve the versatility of the equipment; the fixing parts ensure the stable fixation of the adjusted components to prevent displacement during the processing process.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the coordinated cooperation of the loading and unloading jaws, driving mechanism and unloading and conveying mechanism of the loading and conveying mechanism, the workpiece can be automatically loaded and unloaded, replacing manual operation and significantly improving the efficiency of thread rolling processing; 2. The axial extension design of the extension part enables the extension part to cover a longer axial area of ​​the workpiece, ensuring stable clamping of the workpiece while avoiding interference between the drive mechanism and the thread rolling machine; 3. The opening and closing structure realizes automatic control of the positioning process through mechanical linkage to avoid excessive squeezing of the workpiece. It is suitable for workpieces of different sizes, and the mechanical transmission is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of Example 1 of the present application.

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0028] Figure 3 It is a structural schematic diagram of the highlight drive mechanism of Example 1 of the present application.

[0029] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0030] Figure 5 It is a structural diagram of the positioning component in Example 2 of the present application.

[0031] Figure 6 yes Figure 5 Enlarged view of point C in the middle.

[0032] Explanation of the accompanying symbols: 1. Feeding and conveying mechanism; 11. Feeding and conveying assembly; 111. Feeding and conveying motor; 112. Feeding conveyor belt; 113. Conveying plate; 114. Placement slot; 115. Feeding inclined plate; 12. Positioning assembly; 121. Positioning drive source; 122. Positioning frame; 123. Positioning block; 124. Positioning slot; 125. Positioning inclined plane; 126. Limit block; 127. Elastic pad; 2. Driving mechanism; 21. Translation driving assembly; 211. Translation driving motor; 212. Screw rod; 213. Slider; 214. Support plate; 22. Moving driving assembly; 221. Moving driving cylinder; 222. Moving plate; 23. Lifting driving assembly; 231. Feeding driving cylinder; 232. Feeding lifting plate; 233. Unloading driving cylinder Cylinder; 234, unloading lifting plate; 24, clamping drive assembly; 241, loading clamping cylinder; 242, unloading clamping cylinder; 3, loading clamping jaw; 31, clamping part; 32, extension part; 4, unloading clamping jaw; 5, unloading conveying mechanism; 51, unloading conveying motor; 52, unloading conveyor belt; 53, unloading inclined plate; 54, unloading table; 6, pad; 7, pushing drive source; 8, opening and closing structure; 81, closing button; 82, rotating piece; 821, reset elastic member; 822, interference part; 823, transmission part; 83, transmission rod; 84, rotating block; 85, opening button; 86, trigger member; 861, retraction elastic member; 862, contact part; 863, trigger part; 87, mounting plate; 9, frame; 100, fixing member; 110, adjusting rod. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] Example 1: Example 1 of the present application discloses a loading and unloading device. Figure 1 The loading and unloading device includes a frame 9, a loading and conveying mechanism 1, a driving mechanism 2, a loading jaw 3, a unloading jaw 4, and a unloading conveying mechanism 5. The loading and conveying mechanism 1, the driving mechanism 2, the loading jaw 3, the unloading jaw 4, and the unloading conveying mechanism 5 are all mounted on the frame 9. The loading jaw 3 is used to clamp the workpiece on the loading and conveying mechanism 1, and the unloading jaw 4 is used to clamp the workpiece processed on the thread rolling machine. The driving mechanism 2 is used to drive the loading jaw 3 to move between the loading and conveying mechanism 1 and the thread rolling machine. The driving mechanism 2 is also used to drive the unloading jaw 4 to move between the thread rolling machine and the unloading conveying mechanism 5.

[0035] Reference Figure 1 and Figure 2The feeding and conveying mechanism 1 includes a feeding and conveying assembly 11, which includes a feeding and conveying motor 111 and a feeding conveyor belt 112. The feeding and conveying motor 111 is used to drive the feeding conveyor belt 112 to move. The feeding conveyor belt 112 is set to move to the right. The direction perpendicular to the moving direction of the feeding conveyor belt 112 and located on the horizontal plane is set as the front-to-back direction. The feeding and conveying motor 111 is located in front of the feeding conveyor belt 112. Conveyor plates 113 are fixedly installed on the front and rear ends of the feeding conveyor belt 112. The conveyor plates 113 are provided with "V"-shaped placement grooves 114. The placement grooves 114 are used to radially limit the workpiece.

[0036] Reference Figure 2 The feeding conveying assembly 11 further comprises a feeding inclined plate 115. The feeding inclined plate 115 is inclined in a downward direction away from the feeding conveyor belt 112, and the feeding inclined plate 115 is used for rolling the workpiece thereon by its own gravity.

[0037] Reference Figure 2 The loading and conveying mechanism 1 also includes a positioning assembly 12. The loading conveyor belt 112, the loading inclined plate 115 and the positioning assembly 12 are arranged from left to right. The positioning assembly 12 includes a positioning drive source 121, a positioning frame 122 and a positioning block 123. The positioning drive source 121, the positioning frame 122 and the positioning block 123 are arranged from back to front. The positioning drive source 121 is a cylinder. The loading inclined plate 115 is fixedly mounted on the positioning frame 122. The positioning drive source 121 is used to drive the workpiece to move toward the direction close to the positioning block 123, and the positioning block 123 is used to interfere with the axial end of the workpiece.

[0038] Reference Figure 2 A positioning groove 124 is formed on the upper surface of the positioning frame 122. Positioning slopes 125 are formed on the left and right opposing groove walls of the positioning groove 124. The two positioning slopes 125 are connected, making the positioning groove 124 "V"-shaped. The positioning slopes 125 are used to radially limit the workpiece. The inclination angle between the positioning slope 125 on the right and the vertical axis is smaller than the inclination angle between the positioning slope 125 on the left and the positioning slope 125 on the right and the vertical axis. A limiting block 126 is integrally formed at the upper end of the positioning slope 125 on the right. The limiting block 126 is used to block the workpiece. The positioning slope 125 on the right cooperates with the limiting block 126 to prevent the workpiece from rolling out of the positioning groove 124.

[0039] Reference Figure 3 and Figure 4The drive mechanism 2 includes a translation drive assembly 21, which includes a translation drive motor 211, a screw rod 212, a slider 213, and a support plate 214. The translation drive motor 211 is used to drive the screw rod 212 to rotate. The screw rod 212 is rotatably mounted on the frame 9, with the rotation axis of the screw rod 212 extending in the front-to-back direction. The slider 213 is threadedly connected to the screw rod 212 and is slidably mounted on the frame 9 in the front-to-back direction. The support plate 214 is fixedly mounted on the slider 213.

[0040] Reference Figure 4 The drive mechanism 2 further includes a mobile drive assembly 22, which includes a mobile drive cylinder 221 and a mobile plate 222. The mobile drive cylinder 221 is fixedly mounted on the support plate 214 and is used to drive the mobile plate 222 to move. The mobile plate 222 is mounted on the support plate 214 in a sliding manner in the left-right direction.

[0041] Reference Figure 4 The drive mechanism 2 also includes a lifting drive assembly 23, which includes a loading drive cylinder 231, a loading lifting plate 232, a unloading drive cylinder 233, and a unloading lifting plate 234. The loading drive cylinder 231 is fixedly mounted on the movable plate 222 and is used to drive the loading lifting plate 232 to move. The loading lifting plate 232 is slidably mounted on the movable plate 222 in the up-down direction. The unloading drive cylinder 233 is fixedly mounted on the movable plate 222 and is used to drive the unloading lifting plate 234 to move. The unloading lifting plate 234 is slidably mounted on the movable plate 222 in the up-down direction. The loading lifting plate 232 and the unloading lifting plate 234 are arranged in the left-right direction.

[0042] Reference Figure 4 The drive mechanism 2 also includes a clamping drive assembly 24, which includes a loading clamping cylinder 241 and a blanking clamping cylinder 242. The loading clamping cylinder 241 is fixedly mounted on the loading lifting plate 232 and is used to drive the loading clamping jaw 3 to open and close in the left-right direction. The blanking clamping cylinder 242 is fixedly mounted on the blanking lifting plate 234 and is used to drive the blanking clamping jaw 4 to open and close in the left-right direction.

[0043] Reference Figure 4 The loading clamp 3 and the unloading clamp 4 both include a clamping portion 31, and a pad 6 is provided on the clamping portion 31. The pad 6 is used to contact the workpiece. The pad 6 is made of copper, which is soft and not easy to damage the parts.

[0044] Reference Figure 4The feeding jaw 3 and the unloading jaw 4 both include an extension portion 32, which extends in the front-to-back direction. The extension portion 32 is located behind the clamping portion 31, so that the feeding jaw 3 and the unloading jaw 4 are "L"-shaped as a whole, and the extension portion 32 is used to extend into the thread rolling machine.

[0045] Reference Figure 2 The loading and unloading device also includes a pushing drive source 7 fixedly mounted on the frame 9, and the pushing drive source 7 is used to push the workpiece on the thread rolling machine to move, and the pushing drive source 7 is used to push the workpiece to move in the front and rear directions to push the workpiece into place.

[0046] Reference Figure 2 The unloading conveying mechanism 5 includes an unloading conveying motor 51 and an unloading conveyor belt 52. The unloading conveying motor 51 is used to drive the unloading conveyor belt 52 to convey along the rear, and the unloading conveyor belt 52 extends along the front-to-back direction.

[0047] Reference Figure 1 and Figure 2 The unloading conveying mechanism 5 also includes an unloading inclined plate 53 and an unloading platform 54. The unloading conveyor belt 52, the unloading inclined plate 53 and the unloading platform 54 are arranged from right to left. The unloading inclined plate 53 is inclined downward as it approaches the unloading platform 54. The unloading inclined plate 53 is used to allow the workpiece to roll on it under its own gravity.

[0048] The working principle of the loading and unloading device in Example 1 of the present application is as follows: the workpiece is first transported to the loading inclined plate 115 by the loading conveyor belt 112, and the workpiece rolls down to the positioning groove 124 of the positioning frame 122 by its own gravity. The positioning drive source 121 pushes the workpiece until it contacts the positioning block 123. The drive mechanism 2 drives the loading clamp 3 to clamp the workpiece on the positioning frame 122 and deliver the workpiece to the thread rolling machine, pushing the drive source 7 to push the workpiece to push the workpiece into place on the thread rolling machine, and the thread rolling machine processes the workpiece. After the workpiece is processed, the drive mechanism 2 drives the unloading clamp 4 to clamp the workpiece in the thread rolling machine and deliver the workpiece to the unloading conveyor belt 52. The unloading conveyor belt 52 transports the workpiece to the unloading inclined plate 53, and the workpiece rolls down to the unloading table 54 by its own gravity.

[0049] Example 2: Reference Figure 5 Unlike Example 1, the loading and unloading device in this embodiment further includes a fixing member 100. An adjustment rod 110 is fixedly mounted on the frame 9 via a bolt assembly. The adjustment rod 110 extends axially along the workpiece. A positioning drive source 121, a positioning frame 122, and a positioning block 123 are all slidably mounted on the adjustment rod 110. The fixing member 100 is a bolt, and the positioning drive source 121, the positioning frame 122, and the positioning block 123 are all fixed to the adjustment rod 110 by the fixing member 100.

[0050] Reference Figure 6 An elastic pad 127 is fixedly installed on the side wall of the positioning block 123 facing the positioning frame 122, and the elastic pad 127 can be a rubber pad.

[0051] Reference Figure 5 and Figure 6 The positioning assembly 12 further includes an opening and closing structure 8, which includes a mounting plate 87 and a closing button 81. The mounting plate 87 is fixedly mounted on the frame 9, and the closing button 81 is mounted on the mounting plate 87. The closing button 81 is electrically connected to the positioning drive source 121. When the closing button 81 is triggered, the closing button 81 controls the positioning drive source 121 to stop working.

[0052] Reference Figure 6 The opening and closing structure 8 also includes a rotating piece 82. The rotating piece 82 is rotatably mounted on the positioning block 123, and the rotation axis of the rotating piece 82 extends in the up and down directions. The rotating piece 82 includes a resistance part 822 and a transmission part 823, and the resistance part 822 and the transmission part 823 are arranged in the direction from left to right. The resistance part 822 is used to resist the axial end of the workpiece and the positioning block 123. A reset elastic member 821 is fixedly mounted on the side wall of the resistance part 822 close to the positioning block 123. The reset elastic member 821 is a spring sheet, and the reset elastic member 821 is used to drive the resistance part 822 to rotate toward the direction close to the positioning frame 122.

[0053] Reference Figure 6 The opening and closing mechanism 8 further includes a transmission rod 83 and a rotating block 84. The transmission rod 83 is rotatably connected to the transmission portion 823. The end of the transmission rod 83, distal from the transmission portion 823, is rotatably connected to the rotating block 84. The rotational axis of the rotational connection between the transmission rod 83, the transmission portion 823, and the rotating block 84 all extends in the vertical direction. The rotating block 84 is rotatably connected to the frame 9. The rotational axis of the rotating block 84 extends in the vertical direction. The rotating block 84 is configured to contact the closing button 81.

[0054] Reference Figure 5 and Figure 6 The rotating piece 82 is rotated after being hit by the workpiece, thereby driving the transmission rod 83 to move backward, thereby driving the rotating block 84 to rotate until the rotating piece 82 rotates to hit the positioning block 123. At this time, the rotating block 84 hits the closing button 81, thereby triggering the closing button 81, and the positioning drive source 121 stops working.

[0055] Reference Figure 5 and Figure 6The opening and closing structure 8 also includes an opening button 85 and a trigger member 86. The opening button 85 is installed on the mounting plate 87. The opening button 85 is electrically connected to the positioning drive source 121. When the opening button 85 is triggered, the opening button 85 controls the positioning drive source 121 to start working. The trigger member 86 is slidably installed on the positioning frame 122 along the left and right directions. The trigger member 86 includes a contact portion 862 and a trigger portion 863. The contact portion 862 is located in the positioning groove 124, and the contact portion 862 is used to interfere with the outer peripheral surface of the workpiece. A retraction elastic member 861 is fixedly installed on the side wall of the positioning inclined surface 125 on the right side of the contact portion 862. The retraction elastic member 861 is a spring, and the retraction elastic member 861 is used to drive the trigger member 86 to move to the left. The contact portion 862 and the trigger portion 863 are arranged in the direction from left to right, and the trigger portion 863 is used to interfere with the opening button 85.

[0056] Reference Figure 5 and Figure 6 After the contact portion 862 is abutted by the workpiece, the trigger member 86 moves to the right, and the trigger portion 863 abuts against the start button 85, thereby triggering the start button 85 and the positioning drive source 121 starts working.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A loading and unloading device, characterized in that: The invention comprises a feeding conveying mechanism (1), a driving mechanism (2), a feeding clamp (3), a discharging clamp (4) and a discharging conveying mechanism (5), wherein the feeding clamp (3) is used to clamp a workpiece on the feeding conveying mechanism (1), and the discharging clamp (4) is used to clamp a workpiece on a thread rolling machine. The driving mechanism (2) is used to drive the feeding clamp (4) to move between the feeding conveying mechanism (1) and the thread rolling machine, and the driving mechanism (2) is also used to drive the discharging clamp (3) to move between the thread rolling machine and the discharging conveying mechanism (5).

2. The loading and unloading device according to claim 1, characterized in that: The loading clamp (3) and the unloading clamp (4) both comprise a clamping portion (31), and a pad (6) is provided on the clamping portion (31), and the pad (6) is used to contact with a workpiece.

3. The loading and unloading device according to claim 2, characterized in that: The loading clamp (3) and the unloading clamp (4) both comprise an extension portion (32), the extension portion (32) extending along the axial direction of the workpiece, and the extension portion (32) being located on a side of the clamping portion (31) close to the drive mechanism (2) in the axial direction of the workpiece.

4. The loading and unloading device according to claim 1, characterized in that: It also includes a push drive source (7), which is used to push the workpiece on the thread rolling machine to move, and the push drive source (7) is used to push the workpiece to move in the axial direction.

5. The loading and unloading device according to claim 1, characterized in that: The loading and conveying mechanism (1) includes a loading and conveying component (11) and a positioning component (12), wherein the loading and conveying component (11) and the positioning component (12) are arranged radially of the workpiece, and the positioning component (12) includes a positioning drive source (121), a positioning frame (122) and a positioning block (123), wherein the positioning drive source (121), the positioning frame (122) and the positioning block (123) are arranged axially of the workpiece, and the loading and conveying component (11) is used to convey the workpiece to the positioning frame (122), and the positioning drive source (121) is used to drive the workpiece to move toward the positioning block (123), and the positioning block (123) is used to contact the workpiece.

6. The loading and unloading device according to claim 5, characterized in that: A positioning groove (124) is provided on the upper surface of the positioning frame (122), and positioning inclined surfaces (125) for resisting and limiting the workpiece are formed on two opposite groove walls of the positioning groove (124), and a limiting block (126) is provided at the end of the positioning inclined surface (125) away from the feeding conveying component (11), and the limiting block (126) is used to block and limit the workpiece.

7. The loading and unloading device according to claim 5, characterized in that: The positioning assembly (12) further includes an opening and closing structure (8), the opening and closing structure (8) including a closing button (81), a rotating piece (82), a transmission rod (83) and a rotating block (84), the closing button (81) being electrically connected to the positioning drive source (121), the rotating piece (82) being rotatably disposed on the positioning block (123), the rotating axis of the rotating piece (82) being perpendicular to the driving direction of the positioning drive source (121), the rotating piece (82) being used to abut against the axial end of the workpiece and the positioning block (123), the rotating piece (82) and the positioning block (123) being in contact with each other. 3) is provided with a reset elastic member (821), the reset elastic member (821) is used to drive the rotating piece (82) to rotate in a direction close to the positioning frame (122), the transmission rod (83) is rotatably connected to the rotating piece (82), the transmission rod (83) is slidably arranged on the positioning block (123) in a direction parallel to the driving direction of the positioning drive source (121), the rotating block (84) is rotatably connected to the transmission rod (83), the rotating block (84) is rotatably arranged on the positioning block (123), and the rotating block (84) is used to contact the closing button (81).

8. The loading and unloading device according to claim 7, characterized in that: The opening and closing structure (8) further includes an opening button (85) and a trigger member (86), wherein the opening button (85) is provided on the positioning frame (122), the opening button (85) is electrically connected to the positioning drive source (121), and the trigger member (86) is provided on the positioning frame (122) so as to slide in a direction toward the opening button (85). The trigger member (86) is used to abut against the opening button (85), and when the workpiece is transported to the positioning frame (122), the trigger member (86) abuts against the outer peripheral surface of the workpiece. A retraction elastic member (861) is provided between the trigger member (86) and the positioning frame (122), and the retraction elastic member (861) is used to drive the trigger member (86) to slide in a direction away from the opening button (85).

9. The loading and unloading device according to claim 5, characterized in that: An elastic pad (127) is provided on the side wall of the positioning block (123) facing the positioning frame (122).

10. The loading and unloading device according to claim 5, characterized in that: The invention also includes a frame (9) and a fixing member (100), wherein an adjusting rod (110) is provided on the frame (9), and the adjusting rod (110) extends along the axial direction of the workpiece, and the positioning drive source (121), the positioning frame (122) and the positioning block (123) are all slidably arranged on the adjusting rod (110), and the positioning drive source (121), the positioning frame (122) and the positioning block (123) are all fixed on the adjusting rod (110) by the fixing member (100).

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