A kind of automatic positioning and upsetting equipment for shaft sleeve opening seam

Abstract

A device for automatically positioning and upsetting the open seam of a sleeve relates to the field of mechanical technology, and includes a seam-finding mechanism. The seam-finding mechanism includes a bottom plate, a vibration device, a seam-aligning component bracket, a seam-aligning component, and a material transfer mechanism. The vibration device includes a counterweight, a vibration block, and a vibrator. The seam-aligning component includes a hanging part, a seam-aligning rod, and a baffle. The material transfer mechanism includes a material transfer bracket, a roller, and a rotating motor. Compared with the prior art, the present invention realizes accurate positioning of the open seam by setting the seam-aligning rod with a triangular cross-section. The material transfer mechanism is provided to realize continuous rotation of the sleeve, thereby ensuring that the open seam can be quickly positioned. The sleeve is displaced by the vibration device, so that the sleeve is inserted into the hanging part and moves along the seam-aligning rod to the grabbing point. The whole process is mechanized, and the production efficiency is high while effectively ensuring the accuracy of the upsetting operation.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to an automatic positioning and upsetting device for an opening seam of a shaft sleeve. Background Art

[0002] Bushings are items that carry shafts for rotation or sliding. In mechanical equipment, bearings or bushings are required for situations where rotation or axial sliding is required to ensure that the design performance of the machinery meets the use requirements. Therefore, solving the positioning problems of automated circulation, clamping, and processing of bushings is a meaningful technological innovation that can improve production efficiency. Bushings have many styles and different processing methods, but most of them need to be processed through processes such as rolling and upsetting.

[0003] After passing through the rolling machine, the sleeve is not completely closed or aligned, and an open seam is retained. The sleeves on both sides of the open seam each have a straight section that is difficult to bend by the rolling machine. Therefore, in order to improve the accuracy of the sleeve, the straight section needs to be further upset. In order to ensure the processing quality of upsetting, the sleeve needs to be placed in the upsetting die with the seam facing up or down to prevent the sleeve from facing the two sides of the upsetting machine due to the position of the open seam, especially when the open seam is aligned with the fitting of the upper and lower dies of the upsetting machine, not only will the upsetting effect not be achieved during upsetting, but the entire sleeve will be damaged due to the existence of the straight section at the open seam.

[0004] Therefore, when the sleeve is clamped into the upsetting die, it is necessary to accurately position the sleeve so that the opening seam of the sleeve is away from the joint of the upper and lower dies of the upsetting machine. At the same time, it is necessary to minimize time waste in the entire clamping process to improve production efficiency. However, at present, in the production process of the sleeve, in order to ensure the quality of the sleeve, when the sleeve with an opening seam after rolling is subjected to upsetting processing, it is usually manually placed into the die with the opening seam facing upward or downward for upsetting processing. This feeding method has the disadvantages of low work efficiency and high risk, and on the other hand, it is easy to cause the sleeve opening seam to be misaligned due to human error. Summary of the invention

[0005] In view of this, the present invention provides an automatic positioning and upsetting device for an opening seam of a shaft sleeve to solve the above-mentioned technical problems.

[0006] A shaft sleeve open seam automatic positioning and upsetting device comprises a seam finding mechanism. The seam finding mechanism comprises a bottom plate, a vibration device arranged on the bottom plate, a seam assembly bracket arranged on the bottom plate, a seam assembly arranged in the seam assembly bracket, and a material transfer mechanism arranged on one side of the seam assembly bracket. The vibration device comprises a counterweight, a vibration block arranged between the seam assembly bracket and the bottom plate, and a vibrator. The seam assembly bracket is fixed on the vibration block and is located on one side of the counterweight. The seam assembly comprises a hanging member fixed on the seam assembly bracket at one end, a seam rod suspended and fixed on the other end of the hanging member, and two baffles arranged at both ends of the seam rod. The hanging member is a thin sheet structure. The thickness of the hanging member is less than the gap width of the shaft sleeve open seam. The seam rod is suspended on the seam assembly bracket through the hanging member. The cross section of the seam rod is a triangle. The hanging member is connected to one corner of the triangle, and the side length of the triangle away from the hanging member is greater than the gap width of the open seam of the product. The seam-aligning rod is arranged horizontally. The material transfer mechanism includes a material transfer bracket fixed on the bottom plate, a roller arranged on the material transfer bracket, and a rotating motor driving the roller to rotate. The rotating surface of the roller is spaced apart from the seam-aligning rod, and the spacing is less than the thickness of the sleeve. The direction of the rotating axis of the roller and the moving direction of the sleeve have an angle. When the sleeve contacts the rotating roller while moving along the seam-aligning rod, the sleeve rotates driven by the roller until the open seam faces upward and is stuck in the sharp corner of the seam-aligning rod, and the sleeve stops contacting the roller.

[0007] Furthermore, the automatic positioning and upsetting device for the sleeve opening seam also includes a feeding mechanism and a material moving mechanism arranged on one side of the feeding mechanism.

[0008] Furthermore, the feeding mechanism includes a feeding frame, a material tray arranged on the feeding frame, and a conveying mechanism arranged on one side of the material tray.

[0009] Furthermore, a baffle is arranged around the material tray, and the baffle is surrounded on three sides and has an opening on one side.

[0010] Furthermore, the conveying mechanism is arranged on one side of the material tray, is in the same plane as the material tray and is arranged close to the material tray.

[0011] Furthermore, the material moving mechanism is arranged at the end of the conveying mechanism in the transmission direction, and includes a horizontally arranged horizontal moving component, a vertical lifting component arranged on the horizontal moving component, a rotating component arranged on the vertical lifting component, and a material picking clamp arranged on the rotating component.

[0012] Furthermore, the movement directions of the horizontal moving component and the vertical lifting component are perpendicular to each other and are both perpendicular to the transmission direction of the conveying mechanism, and the rotation plane of the rotating component is perpendicular to the transportation direction of the conveying mechanism.

[0013] Furthermore, the material picking clamp is a double-claw structure, including two claws arranged opposite to each other, and a V-shaped groove is respectively arranged on one side of the two claws facing each other, and anti-slip grooves are also arranged on the edges of the V-shaped grooves.

[0014] Furthermore, the extension direction of the seam-matching rod is consistent with the movement direction of the horizontal moving assembly.

[0015] Furthermore, the size of the blocking piece is larger than the diameter of the circumscribed circle of the cross section of the seam-jointing rod, and the diameter of the circumscribed circle of the blocking piece is smaller than the inner diameter of the shaft sleeve.

[0016] Compared with the prior art, the automatic positioning and upsetting equipment for the open seam of the sleeve provided by the present invention can realize large-capacity material storage and rapid material loading by setting the feeding mechanism, which can effectively improve the processing efficiency and replace manual material loading in sequence. At the same time, the sleeve is clamped and transported by setting the material transfer mechanism, and the stable clamping of the sleeve is ensured by setting the material picking clamp, and the angle of the sleeve is adjusted by setting the rotating assembly, so that the sleeve can be accurately sleeved on the seam rod for seam finding. By setting the seam rod with a triangular cross-section, when the sleeve sleeve sleeved on the seam rod rotates, the open seam and the triangular structure will be stuck when the angular position coincides, thereby realizing accurate positioning of the open seam. At the same time, by setting the material transfer mechanism, the continuous rotation of the sleeve is realized, ensuring that the open seam can be quickly positioned. The shaft sleeve is displaced by the vibration device so that the shaft sleeve is inserted into the suspension part and moves along the seam-matching rod to the grabbing point. The whole process is mechanized, and the positioning is fast and accurate. The production efficiency is high, and the accuracy of subsequent upsetting operations can be effectively guaranteed. The manual seam-finding operation is replaced, and the automatic transportation, automatic clamping, automatic positioning, and automatic loading into the mold of the shaft sleeve with an open seam to be processed are realized, meeting the needs of high-quality mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an upsetting production line used in an automatic positioning upsetting device for an opening seam of a shaft sleeve provided by the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the automatic positioning and upsetting equipment for the sleeve opening seam.

[0019] Figure 3 for Figure 1 A schematic structural diagram of a material shifting mechanism 20 of a shaft sleeve opening seam automatic positioning upsetting device.

[0020] Figure 4 for Figure 1 A schematic structural diagram of a seam-finding mechanism 30 of a shaft sleeve opening seam automatic positioning and upsetting device.

[0021] Figure 5 for Figure 1 A schematic cross-sectional view of a seam-finding mechanism 30 of an automatic positioning and upsetting device for an opening seam of a sleeve.

[0022] Explanation of the reference numerals: feeding mechanism 10, feeding frame 11, material tray 12, conveying mechanism 13, material moving mechanism 20, horizontal moving assembly 21, vertical lifting assembly 22, rotating assembly 23, material picking clamp 24, claw 241, V-shaped slot 242, seam finding mechanism 30, bottom plate 31, vibration device 32, counterweight block 321, vibration block 322, seam alignment assembly bracket 33, seam alignment assembly 34, hanging part 341, seam alignment rod 342, baffle 343, material transfer mechanism 35, material transfer bracket 351, roller 352, clamping mechanism 40, upsetting mechanism 50. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0024] like Figures 1 to 5 As shown, it is a schematic diagram of the structure of the automatic positioning and upsetting device for the open seam of the sleeve provided by the present invention. The automatic positioning and upsetting device for the open seam of the sleeve comprises a feeding mechanism 10, a material moving mechanism 20 arranged on one side of the feeding mechanism 10, a seam finding mechanism 30 arranged on one side of the material moving mechanism 20, a clamping mechanism 40 arranged on one side of the seam finding mechanism 30, and an upsetting mechanism 50 arranged on one side of the clamping mechanism 40. It can be imagined that the subsequent process equipment installed in the automatic positioning and upsetting device for the open seam of the sleeve also includes some other functional modules, such as assembly components, electrical connection components, etc., which are technologies well known to those skilled in the art and will not be described one by one here.

[0025] The feeding mechanism 10 includes a feeding frame 11 , a material tray 12 disposed on the feeding frame 11 , and a conveying mechanism 13 disposed on one side of the material tray 12 .

[0026] The feeder frame 11 can be a frame structure constructed of stainless steel pipes or aluminum profiles, etc., which is used to support the above-mentioned material tray 12 and the conveying mechanism 13, and is provided with multiple other components, including but not limited to a speed regulator box, operating buttons and fixed feet, etc., which are all common technologies used in industrial production equipment, so they will not be described in detail one by one here.

[0027] The material tray 12 is horizontally arranged on the top of the feeding frame 11, and is used to place multiple sleeves to achieve large-capacity material storage. A baffle is arranged around the material tray 12 to prevent the placed sleeves from falling from the edge. The baffle is surrounded on three sides and has an opening on one side to serve as a discharge port to connect to the conveying mechanism 13.

[0028] The conveying mechanism 13 is arranged on one side of the material tray 12, in the same plane as the material tray 12 and close to the material tray 12, so that the sleeve can be placed from the material tray 12 to the conveying mechanism 13 for transmission by manual or mechanical hands. The conveying mechanism 13 is driven by a motor, which is a prior art widely used in the field of industrial production and should be well known to those skilled in the art, so only a brief description is given here. A baffle can be set at the end of the transmission direction of the conveying mechanism 13 to limit the transmitted sleeve, so that the sleeve will not exceed the material shifting station where the material shifting mechanism 20 is located, thereby facilitating the material shifting operation of the material shifting mechanism 20.

[0029] The material moving mechanism 20 and the seam finding mechanism 30 may both be arranged on the same equipment support, and the equipment support is located at one side of the feeding frame 11 .

[0030] The material moving mechanism 20 is arranged at the end of the conveying mechanism 13 in the transmission direction, and includes a horizontally arranged horizontal moving component 21, a vertical lifting component 22 arranged on the horizontal moving component 21, a rotating component 23 arranged on the vertical lifting component 22, and a material picking claw 24 arranged on the rotating component 23.

[0031] The horizontal moving component 21 and the vertical lifting component 22 achieve sliding by setting up two groups of servo slides. Specifically, the horizontal moving component 21 is fixed on the equipment platform, and the vertical lifting component 22 is fixed on the slider of the horizontal moving component 21 through a connecting plate.

[0032] The movement directions of the horizontal moving assembly 21 and the vertical lifting assembly 22 are perpendicular to each other and are perpendicular to the transmission direction of the conveying mechanism 13, so as to realize the biaxial movement of the material taking clamp 24. The structure and working principle of the horizontal moving assembly 21 and the vertical lifting assembly 22 themselves should be the existing technology, which includes servo motors, slide rails, sliders and other components, and will not be described in detail here.

[0033] The rotating assembly 23 can be a pneumatic turntable, which is fixed to the slider of the vertical lifting assembly 22 by a connecting plate. The rotation plane of the rotating assembly 23 is perpendicular to the transportation direction of the conveying mechanism 13. The pneumatic turntable is a rotating device driven by a pneumatic device. Its working principle is based on the mechanical principles of aerodynamics and rotational motion. It is also a prior art and will not be described here. The rotating assembly 23 is used to flip the sleeve grabbed from the conveying mechanism 13 at a certain angle and transfer it to the seam-finding mechanism 30 to facilitate subsequent processes. In this embodiment, the rotating assembly 23 reciprocates 90 degrees to transfer the bearing from the conveying mechanism 13 to the seam-finding mechanism 30.

[0034] The material picking clamp 24 can be a pneumatic clamp, which is fixed to the rotating assembly 23 by a connecting plate so as to rotate under the drive of the rotating assembly 23. The material picking clamp 24 is a double-claw structure, that is, it includes two claws 241 arranged opposite to each other. A V-shaped groove 242 is respectively provided on the side of the two claws 241 facing each other to facilitate clamping of a cylindrical sleeve. Anti-skid patterns can also be provided on the edge of the V-shaped groove 242 to play an anti-skid role. The material picking clamp 24 is used to clamp the sleeve placed on the conveying mechanism 13, and sleeve it on the seam matching assembly 34 described below of the seam finding mechanism 30.

[0035] The above-mentioned servo slide, pneumatic turntable and pneumatic gripper are existing technologies that are widely used in the field of industrial production and should be well known to those skilled in the art, so only a brief description of their functions and structures is given here.

[0036] The seam finding mechanism 30 is arranged on one side of the horizontal moving direction of the material moving mechanism 20, and includes a base plate 31, a vibration device 32 arranged on the base plate 31, a seam assembly bracket 33 arranged on the base plate 31, a seam assembly 34 arranged in the seam assembly bracket 33, and a material transfer mechanism 35 arranged on one side of the seam assembly bracket 33.

[0037] The bottom plate 31 may be a rectangular plate, which is parallel to and spaced apart from the working surface of the equipment support through four elastic buffer structures, and is used to carry other components of the seam finding mechanism 30, and can vibrate under the action of the vibration device 32. The buffer structure may be an elastic rubber pad.

[0038] The vibration device 32 is arranged on the bottom plate 31 to vibrate after power is turned on, and drive the seam assembly bracket 33 and the seam assembly 34 to vibrate together. The vibration device 32 includes a counterweight block 321, a vibration block 322 arranged between the seam assembly bracket 33 and the bottom plate 31, and a vibrator (not shown). The counterweight block 321 is arranged on one side of the seam assembly bracket 33 to balance the weight of each structure on the bottom plate 31 and adjust the moving speed and moving direction of the shaft sleeve sleeved on the seam assembly 34. The vibration block 322 is used to connect the seam assembly bracket 33 and the bottom plate 31, and can be a hollow structure with the vibration machine arranged inside. The vibration machine is arranged on the bottom plate 31. It is a common functional module on equipment such as a vibrating screen material tray and a direct vibration feeder, which should be well known to those skilled in the art, so only a brief description of its function and structure is given here.

[0039] The seam assembly bracket 33 is fixed on the vibration block 322 and is located on one side of the counterweight block 321 to vibrate under the action of the vibration machine. The seam assembly bracket 33 is an internally through frame structure for the seam assembly 34 to pass through and be fixed.

[0040] The seam assembly 34 includes a hanging member 341 with one end fixed to the seam assembly bracket 33 , a seam rod 342 suspended and fixed at the other end of the hanging member 341 , and two blocking pieces 343 arranged at both ends of the seam rod 342 .

[0041] The hanging member 341 is a thin sheet structure, such as a thin iron sheet, or a rope-like structure, etc. Specifically, the thickness of the hanging member 341 should be smaller than the gap width of the opening slit of the sleeve, so that the hanging member 341 can pass through the opening slit of the sleeve. The seam alignment rod 342 is suspended on the seam alignment assembly bracket 33 through the hanging member 341, so that the sleeve only contacts the seam alignment rod 342 to facilitate the seam alignment. When the sleeve is sleeved on the seam alignment rod 342 and moves from one end of the seam alignment rod 342 to the other end, it can pass smoothly without being blocked by the hanging member 341 only when the opening slit is facing upward.

[0042] The cross section of the seam rod 342 is a triangle. In the cross section perpendicular to the extension direction of the seam rod 342, the suspension member 341 is connected to one corner of the triangle, and the side length of the triangle away from the suspension member 341 is greater than the gap width of the opening seam of the product. When the sleeve is sleeved on the seam rod 342, that is, it moves toward the direction of the seam assembly bracket 33 under the action of the vibration device 32, and at the same time, under the action of the material transfer mechanism 35, the sleeve will not only move forward but also rotate, so that when it rotates to the opening seam facing upward, since the cross section of the seam rod 342 is a triangle, one corner of it will be inserted into the opening seam of the sleeve, and the sleeve will thereby realize the positioning of the opening seam. In this process, under the action of the vibration device 32, the sleeve will move the bearing along the extension direction of the seam rod 342. When the bearing moves out of the seam assembly bracket 33, it can be taken away by the device of the subsequent process, such as a robot arm, to complete the seam process.

[0043] The extending direction of the seam-aligning rod 342 is consistent with the moving direction of the horizontal moving assembly 21, so that the sleeve can be moved by the material moving mechanism 20 and inserted into the seam-aligning rod 342. The seam-aligning rod 342 is horizontally arranged to ensure that the sleeve is also in a horizontal state when it is sleeved on the seam-aligning rod 342, so that when the next step is performed after the positioning of the opening seam is completed, the sleeve grasped by the manipulator is always in a horizontal state, which facilitates the manipulator to insert the sleeve into the tooling of the upsetting equipment without affecting the precision of the sleeve after upsetting due to angle problems.

[0044] The blocking piece 343 is disposed at the ends of the two free ends of the seam-aligning rod 342, and the size of the blocking piece 343 is larger than the diameter of the circumscribed circle of the cross section of the seam-aligning rod 342, so that when the sleeve is placed on the seam-aligning assembly 34, it will not slide out from the edge of the seam-aligning assembly 34. The diameter of the circumscribed circle of the blocking piece 343 is smaller than the inner diameter of the sleeve, so that when the material moving mechanism 20 grabs the sleeve and inserts it into the seam-aligning rod 342, it will not be blocked by the blocking piece 343 and cannot be inserted.

[0045] The material transfer mechanism 35 is arranged on one side of the seam-matching rod 342 and is located at one end close to the material transfer mechanism 20 to rotate the sleeve located at the feed end of the seam-matching rod 342. The material transfer mechanism 35 includes a material transfer bracket 351 fixed on the bottom plate 31, a roller 352 arranged on the material transfer bracket 351, and a rotating motor (not shown) driving the roller 352 to rotate. The material transfer bracket 351 is used as a base for carrying the roller 352 and the rotating motor. The roller 352 is arranged on the material transfer bracket 351 and can rotate under the drive of the rotating motor. The rotating surface of the roller 352 is arranged close to the seam-matching rod 342, and the spacing is less than the thickness of the sleeve, so as to drive the sleeve sleeved on the seam-matching rod 342 to rotate. The direction of the rotating axis of the roller 352 has an angle with the moving direction of the sleeve.

[0046] It can be imagined that when the shaft sleeve is loaded onto the seam rod 342, through the vibration of the vibration device 32, the opening seams of some shaft sleeves face upward and are stuck in the sharp corners of the seam assembly 34, and move along the seam assembly 34 under the front and rear vibration of the vibration device 32. However, the opening seams of most shaft sleeves are not facing upward and are blocked by the suspension member 341, and cannot move along the seam rod 342. At this time, the shaft sleeve contacts the rotating roller 352, and rotates under the drive of the roller 352 until the opening seam faces upward and is stuck in the sharp corner of the seam rod 342, so that it can move forward along the seam rod 342 and stop contacting the roller 352.

[0047] When in use, the cylindrical sleeve is placed on the conveying mechanism 13 by a manual or mechanical feeding device, and the placement direction is that the sleeve stands on the conveying mechanism 13, that is, the axial direction of the sleeve is perpendicular to the surface of the conveying mechanism 13, so as to ensure that the sleeve does not roll or shift during the transmission process. The conveying mechanism 13 transports the sleeve to the clamping station, and the material-taking clamping claw 24 moves to the clamping station under the joint action of the horizontal moving assembly 21 and the vertical lifting assembly 22, and clamps the sleeve, and then rotates 90° under the action of the rotating assembly 23, and moves and inserts into the seam-matching rod 342 under the joint action of the horizontal moving assembly 21 and the vertical lifting assembly 22, and then releases the sleeve, and the sleeve rotates to the open seam upward under the action of the material transfer mechanism 35, and moves to the other end along the seam-matching rod 342 under the vibration of the vibration device 32, and is clamped into the mold of the next process by the robot hand for upsetting.

[0048] The clamping mechanism 40 includes a multi-axis mechanical arm and a clamping claw cylinder disposed on the multi-axis mechanical arm. The multi-axis mechanical arm and the clamping claw cylinder are prior art, and their structure and working principle are not described in detail here. When the seam finding mechanism 30 aligns the open seam of the sleeve with the sharp corner of the seam matching rod 342, the multi-axis mechanical arm of the clamping mechanism 40 can control the clamping claw cylinder to clamp the sleeve and send it into the upsetting mechanism 50.

[0049] The upsetting mechanism 50 itself is also a prior art, which sets an un-upset shaft sleeve on a round rod mold, and then closes the upper and lower molds to further curl a section of the straight line section on both sides of the opening seam of the shaft sleeve that is difficult to be curled by a curling machine into a circle.

[0050] Compared with the prior art, the automatic positioning and upsetting equipment for the sleeve open seam provided by the present invention realizes large-capacity material storage and rapid material loading by setting the feeding mechanism 10, which can effectively improve the processing efficiency and replace manual material loading in sequence. At the same time, the sleeve is clamped and transported by setting the material transfer mechanism 20, and the stable clamping of the sleeve is ensured by setting the material picking clamp 24, and the angle of the sleeve is adjusted by setting the rotating assembly 23, so that the sleeve can be accurately sleeved on the seam rod 342 for seam finding. By setting the seam rod 342 with a triangular cross-section, when the sleeve sleeve sleeved on the seam rod 342 rotates, the open seam will be stuck when the angular position of the triangular structure coincides, thereby realizing accurate positioning of the open seam. At the same time, by setting the material transfer mechanism 35, the continuous rotation of the sleeve is realized, ensuring that the open seam can be quickly positioned. The shaft sleeve is displaced by the vibration device 32 so that the shaft sleeve is inserted into the suspension member 341 and moves along the seam-aligning rod 342 to the grabbing point. The whole process is mechanized, and the positioning is fast and accurate. The production efficiency is high, and the accuracy of the upsetting operation can be effectively guaranteed. The manual seam-finding operation is replaced, and the automated transportation, automated clamping, automated positioning, and automated loading into the mold of the shaft sleeve with an open seam to be processed are realized, meeting the needs of high-quality mass production.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A device for automatically positioning and upsetting the open seam of a sleeve, characterized in that: The automatic positioning and upsetting device for the sleeve opening seam includes a seam-finding mechanism, which includes a base plate, a vibration device arranged on the base plate, a seam assembly bracket arranged on the base plate, a seam assembly arranged in the seam assembly bracket, and a material transfer mechanism arranged on one side of the seam assembly bracket. The vibration device includes a counterweight block, a vibration block arranged between the seam assembly bracket and the base plate, and a vibration machine. The seam assembly bracket is fixed on the vibration block and is located on one side of the counterweight block. The seam assembly includes a suspension member fixed at one end to the seam assembly bracket, a seam rod suspended and fixed at the other end of the suspension member, and two baffles arranged at both ends of the seam rod. The suspension member is a thin sheet structure, and the thickness of the suspension member is smaller than the gap width of the sleeve opening seam. The seam-matching rod is suspended on the seam-matching assembly bracket through the hanging part. The cross-section of the seam-matching rod is a triangle. The hanging part is connected to one corner of the triangle. At the same time, the side length of the triangle away from the hanging part is greater than the gap width of the opening seam of the product. The seam-matching rod is horizontally arranged. The material transfer mechanism includes a material transfer bracket fixed on the bottom plate, a roller arranged on the material transfer bracket, and a rotating motor driving the roller to rotate. The rotating surface of the roller is spaced apart from the seam-matching rod, and the spacing is less than the thickness of the sleeve. The direction of the rotating axis of the roller has an angle with the moving direction of the sleeve. When the sleeve contacts the rotating roller while moving along the seam-matching rod, the sleeve rotates driven by the roller until the opening seam faces upward and is stuck in the sharp corner of the seam-matching rod, and the sleeve stops contacting the roller.

2. The automatic positioning and upsetting device for the sleeve opening seam according to claim 1, characterized in that: The automatic positioning and upsetting device for the shaft sleeve opening seam also includes a feeding mechanism and a material moving mechanism arranged on one side of the feeding mechanism.

3. The automatic positioning and upsetting device for the sleeve opening seam according to claim 2, characterized in that: The feeding mechanism comprises a feeding frame, a material tray arranged on the feeding frame, and a conveying mechanism arranged on one side of the material tray.

4. The automatic positioning and upsetting device for the sleeve opening seam according to claim 3, characterized in that: A baffle is arranged around the material tray, and the baffle is surrounded on three sides and has an opening on one side.

5. The automatic positioning and upsetting device for the sleeve opening seam according to claim 3, characterized in that: The conveying mechanism is arranged on one side of the material tray, is in the same plane as the material tray and is arranged close to the material tray.

6. The automatic positioning and upsetting device for the sleeve opening seam according to claim 3, characterized in that: The material moving mechanism is arranged at the end of the conveying mechanism in the transmission direction, and includes a horizontally arranged horizontal moving component, a vertical lifting component arranged on the horizontal moving component, a rotating component arranged on the vertical lifting component, and a material picking clamp arranged on the rotating component.

7. The automatic positioning and upsetting device for the sleeve opening seam according to claim 6, characterized in that: The movement directions of the horizontal moving component and the vertical lifting component are perpendicular to each other and are both perpendicular to the transmission direction of the conveying mechanism. The rotation plane of the rotating component is perpendicular to the transportation direction of the conveying mechanism.

8. The automatic positioning and upsetting device for the sleeve opening seam according to claim 6, characterized in that: The material taking clamping claw is a double-claw structure, including two claw parts arranged opposite to each other, and a V-shaped groove is respectively arranged on one side of the two claw parts facing each other, and anti-slip grooves are also arranged on the edges of the V-shaped grooves.

9. The automatic positioning and upsetting device for the sleeve opening seam according to claim 6, characterized in that: The extending direction of the seam-matching rod is consistent with the moving direction of the horizontal moving assembly.

10. The automatic positioning and upsetting device for the sleeve opening seam according to claim 1, characterized in that: The size of the blocking piece is larger than the diameter of the circumscribed circle of the cross section of the seam-jointing rod, and the diameter of the circumscribed circle of the blocking piece is smaller than the inner diameter of the shaft sleeve.

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