Automatic welding machine for shelf cone sleeve

Abstract

The utility model discloses a thing shelf cone sleeve automatic welding machine, including the chassis, is respectively equipped with switching mechanism and manipulator on two end parts of chassis, is respectively equipped with first positioning mechanism and second positioning mechanism on switching mechanism, is respectively equipped with the fixing mechanism for fixing net board and cone sleeve on first positioning mechanism and second positioning mechanism, is equipped with the welding torch on manipulator. The utility model realizes can full -automatic to net board and cone sleeve positioning and welding, its to net board and cone sleeve not only has butt joint positioning precision height, butt joint positioning efficiency height, welding efficiency height and welding effect good advantage, its still reduced the labor intensity of worker and reduced the labor cost of enterprise, and effectively solved the traditional adoption manual net board and cone sleeve positioning and welding because net board and cone sleeve easy to appear butt joint deviation and lead to its to have positioning precision low, welding efficiency low, welding effect poor, welding cost height and the problem of low good product rate of product.

Description

Technical Field

[0001] This utility model relates to the field of welding machines, and in particular to an automatic welding machine for conical sleeves of storage racks. Background Technology

[0002] The four corners of the mesh panel need to be welded with conical sleeves before the shelving unit is assembled using tubular columns. Traditionally, welding the conical sleeves at the four corners of the mesh panel is done manually. First, the mesh panel and the conical sleeves are placed on a jig table for positioning. Then, the joint between the conical sleeve and the mesh panel is welded manually using a handheld welding gun. This method not only results in low efficiency in loading and unloading the mesh panel, low positioning efficiency of the mesh panel and the conical sleeve, high labor intensity for workers, and high labor costs for enterprises, but also causes deviations between the conical sleeve and the mesh panel due to inaccurate positioning. This leads to problems such as low efficiency in welding the conical sleeve to the mesh panel, poor welding effect, and high welding cost. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic welding machine for conical sleeves of storage racks.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the automatic welding machine for conical sleeves of the shelving unit includes a base frame, and a switching mechanism and a robotic arm are respectively installed on the two ends of the base frame. The switching mechanism is respectively equipped with a first positioning mechanism and a second positioning mechanism. The first positioning mechanism and the second positioning mechanism are respectively equipped with a fixing mechanism for fixing the mesh plate and the conical sleeve. The robotic arm is equipped with a welding gun.

[0005] The fixing mechanism includes a fixed base plate, with longitudinal guide components for centering the placed mesh panels installed at both ends of the fixed base plate; side rail pressing components for pressing the top of the mesh panels and cone sleeve positioning components for fixing the cone sleeves are installed at the four corners of the fixed base plate, and the side rail pressing components correspond to the cone sleeve positioning components. Side rail pressing components are installed on both sides of the cone sleeve positioning components, and the two side rail pressing components push the mesh panels in directions perpendicular to each other. The center of the fixed base plate is provided with a first positioning hole, a second positioning hole, a third positioning hole, a fourth positioning hole, and a fifth positioning hole. A first guide sleeve is installed in the fourth positioning hole, and a second guide sleeve is installed in the fifth positioning hole.

[0006] Preferably, the conical sleeve positioning assembly includes a conical sleeve base mounted on a fixed base plate, a positioning pin lifting drive device is mounted on the bottom surface of the conical sleeve base, a conical sleeve positioning pin is mounted on the output end of the positioning pin lifting drive device, and the conical sleeve positioning pin moves out of the conical sleeve base.

[0007] Preferably, the side rail pressing assembly includes a bracket flipping drive device, a rotary cylinder mounting base, a rotary bracket, a screw bracket, and a screw. The bracket flipping drive device is fixed to the fixed base plate via the rotary cylinder mounting base. One end of the rotary bracket is installed on the output end of the bracket flipping drive device, and the other end of the rotary bracket is connected and installed to the screw bracket. The bracket flipping drive device drives the rotary bracket and the screw bracket to flip. The screw is vertically mounted on the screw bracket, and there is more than one screw. A tapered sleeve pressure head is provided above the tapered sleeve positioning assembly, and the tapered sleeve pressure head is mounted on the screw bracket.

[0008] Preferably, the side rail side pressure assembly includes a push plate translation drive device, a push plate, a baffle and a baffle mounting base. The push plate is installed on the output end of the push plate translation drive device, and the baffle is fixed to the fixed base plate by the baffle mounting base and located inside the mesh side rail.

[0009] Preferably, the switching mechanism includes a rotary table drive device, a divider, a rotary table, and a partition. The divider is installed on the output end of the rotary table drive device, and the rotary table drive device is connected to the rotary table via the divider. The partition is vertically installed on the rotary table and located between the first positioning mechanism and the second positioning mechanism. Air pipe fixing brackets are provided on both sides of the partition.

[0010] Preferably, the first positioning mechanism includes a positioning plate, a screw seat, a first positioning component, a second positioning component, a first guide component, and a second guide component. The screw seat, the first positioning component, the second positioning component, the first guide component, and the second guide component are all mounted on the positioning plate. The screw seat is mounted on the middle part of the positioning plate. The first positioning component, the first guide component, the second positioning component, and the second guide component are arranged sequentially around the outer periphery of the screw seat. The first positioning component and the second positioning component are arranged at an angle to each other, and the first guide component and the second guide component are arranged at an angle to each other. A pre-start box and two manual control valves are respectively installed on the end of the positioning plate away from the partition. The first positioning hole is screwed to the screw seat by a screw.

[0011] Both the first guide component and the second guide component include a guide pin seat mounted on the positioning plate, and a guide pin is vertically mounted on the guide pin seat. The guide pin of the first guide component passes through the second positioning hole, and the guide pin of the second guide component passes through the third positioning hole.

[0012] The first positioning component includes a first positioning pin seat mounted on a positioning plate, a first positioning pin mounted on the first positioning pin seat, and the first positioning pin passing through the inner hole of the first guide sleeve of the fourth positioning hole.

[0013] The second positioning component includes a second positioning pin seat mounted on a positioning plate, a second positioning pin mounted on the second positioning pin seat, the second positioning pin passing through the inner hole of the second guide sleeve of the fifth positioning hole, and the top of the second positioning pin having several cutting surfaces.

[0014] Specifically, the structure and working principle of the second positioning mechanism are the same as those of the first positioning mechanism.

[0015] Preferably, the longitudinal guide assembly of the shelf includes a guide block positioning plate vertically mounted on a fixed base plate, and a longitudinal guide block is provided on the side of the guide block positioning plate facing the mesh plate.

[0016] Preferably, a controller is provided for signal control of components such as the robot arm, switching mechanism, first positioning mechanism, second positioning mechanism and fixing mechanism. The controller is a PLC programmable logic controller. The PLC programmable logic controller can be a programmable logic controller of model XDS-40T-D, but is not limited thereto.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0018] 1. By designing a fixing mechanism on top of the first and second positioning mechanisms and using it in conjunction with a robotic arm equipped with a welding gun, it enables fully automatic and precise docking and fixing of the mesh plate and cone sleeve, as well as automatic welding of the docked and positioned mesh plate and cone sleeve. It not only has the advantages of high docking and positioning accuracy, high docking and positioning efficiency, high welding efficiency, and good welding effect, but also reduces the labor intensity of workers and the labor costs of enterprises. It also solves the problems of low positioning accuracy, low welding efficiency, poor welding effect, high welding cost, and low product yield caused by the traditional manual positioning and welding of mesh plates and cone sleeves due to docking deviations.

[0019] 2. By setting a switching mechanism on one end of the base frame and setting the first positioning mechanism and the second positioning mechanism on the two ends of the switching mechanism respectively, the first positioning mechanism and the second positioning mechanism can automatically switch positions through the switching mechanism, so that the first positioning mechanism and the second positioning mechanism can work continuously, which improves the loading and unloading efficiency of the screen and solves the problem of low loading and unloading efficiency of the screen caused by traditional manual single-station work.

[0020] 3. By designing the structures of the first positioning mechanism and the second positioning mechanism respectively, the two fixed mechanisms can be fixedly installed on the first positioning mechanism and the second positioning mechanism respectively, so that the two fixed mechanisms can automatically switch work positions as the corresponding positioning mechanisms rotate. Attached Figure Description

[0021] For ease of explanation, the present invention will be described in detail below with reference to the preferred embodiments and accompanying drawings.

[0022] Figure 1 This is a three-dimensional schematic diagram of the automatic welding machine for the conical sleeve of the shelf according to this utility model.

[0023] Figure 2 This is a perspective view of the fixing mechanism of the automatic welding machine for the cone sleeve of the shelf according to this utility model.

[0024] Figure 3 These are perspective views of the fixing mechanism of the automatic welding machine for the conical sleeve of the shelf according to this utility model, taken from different directions.

[0025] Figure 4 This is a perspective view of the cone sleeve positioning component of the automatic welding machine for cone sleeves of the shelf according to this utility model.

[0026] Figure 5 This is a perspective view of the side rail pressing component of the automatic welding machine for the cone sleeve of the shelf according to this utility model.

[0027] Figure 6 This is a perspective view of the side rail pressure component of the automatic welding machine for the cone sleeve of the shelf according to this utility model.

[0028] Figure 7 This is a front view of the switching mechanism of the automatic welding machine for the cone sleeve of the shelf according to this utility model.

[0029] Figure 8 This is a perspective view of the switching mechanism of the automatic welding machine for the cone sleeve of the shelf according to this utility model.

[0030] Figure 9 This is a perspective view of the screw seat, first positioning component, second positioning component, first guide component, and second guide component in the first or second positioning mechanism of the automatic welding machine for the conical sleeve of the shelf according to this utility model. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] Reference Figure 1As shown, the automatic welding machine for conical sleeves of the shelf of this utility model includes a base frame 1. A switching mechanism 2 and a robot arm 3 are respectively installed on the two ends of the base frame 1. A first positioning mechanism 4 and a second positioning mechanism 5 are respectively installed on the switching mechanism 2. A fixing mechanism 6 is respectively installed on the first positioning mechanism 4 and the second positioning mechanism 5. A welding gun 7 is installed on the robot arm 3.

[0034] By adopting the above technical solution, the fixing mechanism 6 is used to fix the mesh plate and the cone sleeve, and the switching mechanism 2 is used to switch the fixing mechanism 6 on the first positioning mechanism 4 and the second positioning mechanism 5 to provide the welding gun 7 with the mesh plate and cone sleeve to be welded and to unload the finished product after welding. The welding gun 7 moves freely under the drive of the robot arm 3 to automatically weld the mesh plate and cone sleeve that have completed docking and positioning.

[0035] Reference Figures 2 to 3 As shown, the fixing mechanism 6 includes a fixed base plate 61. Longitudinal guide components 62 for centering the placed mesh panels are respectively installed at both ends of the fixed base plate 61. Side rail pressing components 63 and conical sleeve positioning components 64 are respectively installed at the four corners of the fixed base plate 61, with the side rail pressing components 63 corresponding to the conical sleeve positioning components 64. Side rail pressing components 65 are respectively installed on both sides of the conical sleeve positioning components 64, and the two side rail pressing components 65 push the mesh panels in directions perpendicular to each other. The center of the fixed base plate 61 is provided with a first positioning hole 66, a second positioning hole 67, a third positioning hole 68, a fourth positioning hole 69, and a fifth positioning hole 60. The second positioning hole 67, the third positioning hole 68, the fourth positioning hole 69, and the fifth positioning hole 60 are located around the first positioning hole 66. A first guide sleeve 601 and a second guide sleeve 602 are respectively installed in the fourth positioning hole 69 and the fifth positioning hole 60.

[0036] By adopting the above technical solution, the cone sleeve is placed on each cone sleeve positioning component 64 and the mesh plate is placed on the top surface of the fixed base plate 61 of the fixing mechanism 6. The cone sleeve positioning component 64 automatically fixes the cone sleeve, and the side rail pressing component 63 automatically presses the top of the mesh plate, thereby realizing automatic docking and positioning of the cone sleeve and the mesh plate. It has the advantages of high positioning efficiency, high positioning accuracy and good positioning effect.

[0037] In this embodiment, the vertical guide assembly 62 of the shelf includes a guide block positioning plate 621 vertically mounted on the fixed base plate 61, and a vertical guide block 622 is provided on the side of the guide block positioning plate 621 facing the mesh plate.

[0038] Reference Figure 2 and Figure 4As shown, the conical sleeve positioning assembly 64 includes a conical sleeve base 641 mounted on a fixed base plate 61. A positioning pin lifting drive device 642 is mounted on the bottom surface of the conical sleeve base 641. A conical sleeve positioning pin 643 is mounted on the output end of the positioning pin lifting drive device 642. The conical sleeve positioning pin 643 extends movably out of the conical sleeve base 641.

[0039] By adopting the above technical solution, when the cone sleeve is placed on the cone sleeve base 641, the positioning pin lifting drive device 642 drives the cone sleeve positioning pin 643 to rise and penetrate into the cone sleeve to achieve positioning and fixing of the cone sleeve; when the mesh plate and the cone sleeve are welded together, the positioning pin lifting drive device 642 drives the cone sleeve positioning pin 643 to fall and exit the cone sleeve. The structural design of the cone sleeve positioning component 64 realizes the automated fixing, positioning and unloading of the cone sleeve, so as to ensure accurate docking positioning of the mesh plate and the cone sleeve, high welding efficiency of the mesh plate and the cone sleeve and good welding effect of the mesh plate and the cone sleeve.

[0040] In this embodiment, the positioning pin lifting drive device 642 is configured as a cylinder.

[0041] Reference Figure 5 As shown, the side rail top pressing assembly 63 includes a bracket flipping drive device 631, a rotary cylinder mounting base 632, a rotary bracket 633, a screw bracket 634, and a screw 635. The bracket flipping drive device 631 is fixed to the fixed base plate 61 through the rotary cylinder mounting base 632. One end of the rotary bracket 633 is installed on the output end of the bracket flipping drive device 631, and the other end of the rotary bracket 633 is connected to the screw bracket 634. The bracket flipping drive device 631 drives the rotary bracket 633 and the screw bracket 634 to flip together. The screw 635 is vertically installed on the screw bracket 634, and there is more than one screw 635. A tapered sleeve pressure head 636 is provided above the tapered sleeve positioning assembly 64, and the tapered sleeve pressure head 636 is installed on the screw bracket 634.

[0042] By adopting the above technical solution, when the bracket flipping drive device 631 drives the rotating bracket 633 and the screw bracket 634 to flip downward, the cone sleeve pressure head 636 presses the cone sleeve, and at the same time, the two screws 635 press the top of the adjacent side rails of the mesh plate respectively, so as to realize the automatic pressing and fixing of the cone sleeve and the adjacent side rails of the mesh plate. The structural design of the side rail top pressing component 63 improves the docking accuracy between the cone sleeve and the side rail of the mesh plate (i.e., the side rail of the mesh plate), so as to facilitate the welding gun 7 to weld it, thereby improving the welding efficiency and ensuring good welding effect.

[0043] In this embodiment, the bracket flipping drive device 631 is configured as a rotary cylinder, and two screws 635 are provided. In other embodiments, different numbers of screws 635 may be provided depending on the actual situation, so it is not limited thereto.

[0044] Reference Figure 6 As shown, the side rail side pressure assembly 65 includes a push plate translation drive device 651, a push plate 652, a baffle 653 and a baffle mounting base 654. The push plate 652 is installed on the output end of the push plate translation drive device 651, and the baffle 653 is fixed on the fixed base plate 61 through the baffle mounting base 654 and is located inside the mesh side rail.

[0045] By adopting the above technical solution, after the mesh plate is placed on the fixed base plate 61, the baffle 653 presses against the inner side of the side rail, and the push plate translation drive device 651 pushes the push plate 652 towards the side rail to press the side rail onto the baffle 653. The structural design of the side rail side pressure component 65 realizes automatic lateral fixing and positioning of the mesh plate side rail. The side rail side pressure component 65 and the side rail top pressure component 63 cooperate to enable the mesh plate side rail and the cone sleeve to achieve automatic and precise docking, which greatly improves the welding quality of the mesh plate side rail and the cone sleeve. This solves the problems of low positioning efficiency, low welding efficiency, poor welding effect and low yield caused by the inaccurate docking and positioning of the cone sleeve and the mesh plate when the cone sleeve and the mesh plate are positioned manually in the traditional way.

[0046] In this embodiment, the push plate translation drive device 651 is configured as a cylinder.

[0047] Reference Figure 7 and Figure 8 As shown, the switching mechanism 2 includes a rotary table drive device 21, a divider 22, a rotary table 23, and a partition 24. The divider 22 is installed on the output end of the rotary table drive device 21. The rotary table drive device 21 is connected to the rotary table 23 through the divider 22. The partition 24 is vertically installed on the rotary table 23 and located between the first positioning mechanism 4 and the second positioning mechanism 5. Air pipe fixing brackets 25 are respectively provided on both sides of the partition 24.

[0048] By adopting the above technical solution, the rotary table drive device 21 drives the rotary table 23 to rotate through the divider 22 to automatically switch the positions of the first positioning mechanism 4 and the second positioning mechanism 5. When the welding torch 7 is welding one of the positioning mechanisms, the other positioning mechanism can unload or load the mesh. The automatic switching of the positions of the first positioning mechanism 4 and the second positioning mechanism 5 can improve the loading and unloading efficiency of the mesh. The partition 24 is designed to separate the first positioning mechanism 4 and the second positioning mechanism 5, preventing the welding slag generated by one positioning mechanism during welding from splashing onto the other positioning mechanism in the loading and unloading state. It ensures that the operation of the first positioning mechanism 4 and the second positioning mechanism 5 does not interfere with each other, thereby ensuring high overall work efficiency and high product yield.

[0049] Reference Figure 8 and Figure 9As shown, the first positioning mechanism 4 includes a positioning plate 41, a screw seat 42, a first positioning component 43, a second positioning component 44, a first guide component 45, and a second guide component 46. The screw seat 42, the first positioning component 43, the second positioning component 44, the first guide component 45, and the second guide component 46 are all mounted on the positioning plate 41. The screw seat 42 is mounted on the middle part of the positioning plate 41. The first positioning component 43, the first guide component 45, the second positioning component 44, and the second guide component 46 are arranged around the outer periphery of the screw seat 42 in sequence. The first positioning component 43 and the second positioning component 44 are arranged obliquely opposite each other, and the first guide component 45 and the second guide component 46 are arranged obliquely opposite each other. The end of the positioning plate 41 away from the partition 24 is respectively equipped with a pre-start box 47 and two manual control valves 48. The first positioning hole 66 is screwed to the screw seat 42 by screws.

[0050] Reference Figure 9 As shown, both the first guide component 45 and the second guide component 46 include a guide pin seat 451 mounted on the positioning plate 41, and a guide pin 452 is vertically mounted on the guide pin seat 451. The guide pin 452 of the first guide component 45 passes through the second positioning hole 67, and the guide pin 452 of the second guide component 46 passes through the third positioning hole 68.

[0051] Reference Figure 9 As shown, the first positioning component 43 includes a first positioning pin seat 431 mounted on the positioning plate 41, and a first positioning pin 432 mounted on the first positioning pin seat 431. The first positioning pin 432 passes through the inner hole of the first guide sleeve 601 of the fourth positioning hole 69.

[0052] Reference Figure 9 As shown, the second positioning component 44 includes a second positioning pin seat 441 mounted on the positioning plate 41, a second positioning pin 442 mounted on the second positioning pin seat 441, the second positioning pin 442 passing through the inner hole of the second guide sleeve 602 of the fifth positioning hole 60, and the top of the second positioning pin 442 having a plurality of cutting surfaces 443. The structure and working principle of the second positioning mechanism 5 are the same as those of the first positioning mechanism 4.

[0053] By adopting the above technical solution, the scheduled start box 47 is used to schedule the start of the fixing mechanism 6 to fix the mesh plate and the cone sleeve. The manual control valve 48 is used to control the corresponding fixing mechanism 6 to fix the mesh plate and the cone sleeve. When the guide pin 452 of the first guide assembly 45 passes through the second positioning hole 67 and the guide pin 452 of the second guide assembly 46 passes through the third positioning hole 68, the guide pin 452 guides the installation of the fixing base plate 61. It has several cutting surfaces 443 on the top of the second positioning pin 442. When the first positioning pin 432 passes through the inner hole of the first guide sleeve 601 of the fourth positioning hole 69 and the second positioning pin 442 passes through the fifth positioning hole 60, the second positioning pin 442 passes through the fifth positioning hole 60, the second positioning pin 442 passes through the inner hole of the first guide sleeve 601 of the fourth positioning hole 69 and the second positioning pin 442 passes through the fifth positioning hole 60, the second positioning pin 442 passes through the fifth positioning hole 60, the second positioning pin 442 passes through the second ... When the second guide sleeve 602 is inserted into the inner hole, there is a certain gap between the cutting surface 443 and the inner hole of the second guide sleeve 602, so that the fixed base plate 61 can be completely fitted onto the guide pins, the first positioning pin 432 and the second positioning pin 442 of the first guide assembly 45 and the second guide assembly 46, thereby realizing that the fixed base plate 61 can be placed flat on the first positioning mechanism 4 or the second positioning mechanism 5. When the screw is inserted into the first positioning hole 66, the screw is screwed into the screw seat 42 through the first positioning hole 66 to fix the fixed base plate 61 on the screw seat 42, thereby realizing that the two fixing mechanisms 6 are respectively fixedly installed on the first positioning mechanism 4 and the second positioning mechanism 5.

[0054] Its overall structural design enables automatic and precise docking and positioning of the mesh plate and cone sleeve placed on the fixed mechanism 6, automatic welding of the docked and positioned mesh plate and cone sleeve, and automatic switching of the workstation and unloading of the welded mesh plate and cone sleeve. Moreover, the docking, positioning and welding process of the mesh plate and cone sleeve does not require manual intervention. It not only has the advantages of high docking and positioning accuracy, high docking and positioning efficiency, high welding efficiency and good welding effect, but also reduces the labor intensity of workers and the labor cost of enterprises. At the same time, the automatic switching of the first positioning mechanism 4 and the second positioning mechanism 5 between the two workstations improves the loading and unloading efficiency of the mesh plate. It effectively solves the problems of low positioning accuracy, low welding efficiency, poor welding effect, high welding cost and low product yield caused by the easy docking deviation of the mesh plate and cone sleeve when the traditional manual positioning and welding of mesh plate and cone sleeve is used.

[0055] The above embodiments are merely examples of this utility model and are not intended to limit the implementation and scope of this utility model. All technical solutions that are the same as or equivalent to the contents described in the claims of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic welding machine for conical sleeves of storage racks, including a base frame, characterized in that: A switching mechanism and a robotic arm are respectively installed on the two ends of the base frame. The switching mechanism is equipped with a first positioning mechanism and a second positioning mechanism. The first positioning mechanism and the second positioning mechanism are respectively equipped with fixing mechanisms for fixing the mesh plate and the cone sleeve. The robotic arm is equipped with a welding gun. The fixing mechanism includes a fixed base plate, with longitudinal guide components for centering the placed mesh panels installed at both ends of the fixed base plate; and side rail pressing components for pressing the top of the mesh panels and cone sleeve positioning components for fixing the cone sleeves are installed at the four corners of the fixed base plate, with the side rail pressing components corresponding to the cone sleeve positioning components, and side rail pressing components installed on both sides of the cone sleeve positioning components, with the two side rail pressing components pushing the mesh panels in directions perpendicular to each other.

2. The automatic welding machine for conical sleeves of a shelf according to claim 1, characterized in that: The fixed base plate is provided with a first positioning hole, a second positioning hole, a third positioning hole, a fourth positioning hole and a fifth positioning hole at its center. The fourth positioning hole and the fifth positioning hole are respectively equipped with a first guide sleeve and a second guide sleeve.

3. The automatic welding machine for conical sleeves of a shelf according to claim 1, characterized in that: The conical sleeve positioning assembly includes a conical sleeve base mounted on a fixed base plate. A positioning pin lifting drive device is mounted on the bottom surface of the conical sleeve base. A conical sleeve positioning pin is mounted on the output end of the positioning pin lifting drive device, and the conical sleeve positioning pin moves out of the conical sleeve base.

4. The automatic welding machine for conical sleeves of a shelf according to claim 1, characterized in that: The side rail top pressing assembly includes a bracket flipping drive device, a rotary cylinder mounting base, a rotary bracket, a screw bracket, and a screw. The bracket flipping drive device is fixed to the fixed base plate through the rotary cylinder mounting base. One end of the rotary bracket is installed on the output end of the bracket flipping drive device, and the other end of the rotary bracket is connected and installed to the screw bracket. The bracket flipping drive device drives the rotary bracket and the screw bracket to flip. The screw is vertically installed on the screw bracket, and there is more than one screw. A tapered sleeve pressure head is provided above the tapered sleeve positioning assembly, and the tapered sleeve pressure head is installed on the screw bracket.

5. The automatic welding machine for conical sleeves of a shelf according to claim 1, characterized in that: The side rail side pressure assembly includes a push plate translation drive device, a push plate, a baffle and a baffle mounting base. The push plate is installed on the output end of the push plate translation drive device, and the baffle is fixed to the fixed base plate by the baffle mounting base and is located inside the mesh side rail.

6. The automatic welding machine for conical sleeves of a shelf according to claim 1, characterized in that: The switching mechanism includes a rotary table drive device, a divider, a rotary table, and a partition. The divider is installed on the output end of the rotary table drive device. The rotary table drive device is connected to the rotary table via the divider. The partition is vertically installed on the rotary table and located between the first positioning mechanism and the second positioning mechanism. Air pipe fixing brackets are provided on both sides of the partition.

7. The automatic welding machine for conical sleeves of a shelf according to claim 2 or 6, characterized in that: The first positioning mechanism includes a positioning plate, a screw seat, a first positioning component, a second positioning component, a first guide component, and a second guide component. The screw seat, the first positioning component, the second positioning component, the first guide component, and the second guide component are all mounted on the positioning plate. The screw seat is mounted on the middle part of the positioning plate. The first positioning component, the first guide component, the second positioning component, and the second guide component are arranged sequentially around the outer periphery of the screw seat. The first positioning component and the second positioning component are arranged at an angle to each other, and the first guide component and the second guide component are arranged at an angle to each other. A pre-start box and two manual control valves are respectively installed on the end of the positioning plate away from the partition. The first positioning hole is screwed to the screw seat by a screw. Both the first guide component and the second guide component include a guide pin seat mounted on the positioning plate, and a guide pin is vertically mounted on the guide pin seat. The guide pin of the first guide component passes through the second positioning hole, and the guide pin of the second guide component passes through the third positioning hole. The first positioning component includes a first positioning pin seat mounted on a positioning plate, a first positioning pin mounted on the first positioning pin seat, and the first positioning pin passing through the inner hole of the first guide sleeve of the fourth positioning hole. The second positioning component includes a second positioning pin seat mounted on a positioning plate, a second positioning pin mounted on the second positioning pin seat, the second positioning pin passing through the inner hole of the second guide sleeve of the fifth positioning hole, and the top of the second positioning pin having several cutting surfaces. The structure and working principle of the second positioning mechanism are the same as those of the first positioning mechanism.

8. The automatic welding machine for conical sleeves of a shelf according to claim 1, characterized in that: The vertical guide assembly of the shelf includes a guide block positioning plate vertically mounted on a fixed base plate, and a vertical guide block is provided on the side of the guide block positioning plate facing the mesh plate.

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