Automatic welding device for carrier roller production

Abstract

The invention provides an automatic welding device for carrier roller production, and belongs to the technical field of carrier roller production, the automatic welding device comprises a workbench, the workbench is provided with a mounting rack, the mounting rack is provided with a sleeve and a welding gun, the sleeve is provided with a transverse positioning piece used for clamping a bearing seat, the mounting rack is provided with a vertical positioning piece used for supporting a cylinder, and the vertical positioning piece is provided with a welding gun. The casing pipe is arranged in the middle of the mounting frame, the transverse positioning piece can rotate around the axis of the transverse positioning piece, the transverse positioning piece can also move in the direction of the axis of the transverse positioning piece, and the transverse positioning piece comprises a plug capable of evenly expanding towards the periphery and is used for being matched with bearing pedestals of different sizes; and the vertical positioning piece comprises a lower connecting plate and an upper connecting plate which are symmetrically distributed up and down. Compared with a traditional mode, the device has the advantages that when carrier rollers with different diameters are machined, the barrel and the bearing seat can be coaxial without repeatedly measuring the coaxiality, errors can be reduced, and the machining precision and the machining efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of roller production, and in particular to an automatic welding device for roller production. Background Art

[0002] Rollers are key components of belt conveyors, mainly used to support the conveyor belt and the materials transported on it, so that the conveyor belt can run smoothly. Its function is similar to the wheels of a train, by reducing the friction between the conveyor belt and the supporting structure, ensuring that the material can be efficiently and stably transported from one location to another.

[0003] The roller body of the metal roller is a section of cylindrical seamless steel pipe, and the bearing is installed inside the roller body through the bearing seat. When processing the roller body, it is necessary to press the bearing seat into the cylinder body first, and then weld the bearing seat to the cylinder body. The bearing seat plays a role of connection and support inside the roller, making the fit between the cylinder body, shaft and bearing more tight and stable.

[0004] Referring to the Chinese patent application document with publication number CN114043112A and titled "Automated Roller Welding Device", two adjustable support seats are used to provide vertical support for the cylinder, and two clamping mechanisms are used to clamp the cylinder horizontally. The clamping mechanism is driven by an electric motor to realize the rotation of the cylinder. After adjusting the distance between the welding gun and the roller, automated welding can be achieved.

[0005] According to the above technical solution, the support seat changes the support height by adjusting the structure to support cylinders of different diameters so that the cylinder and the clamping mechanism are on the same axis. However, the coaxiality of the cylinder and the clamping mechanism needs to be measured multiple times during adjustment. The operation steps are cumbersome and there are large errors. When processing rollers of different diameters, this adjustment method takes a long time and has large errors, which can easily reduce production efficiency and product quality. Summary of the invention

[0006] In view of this, the present application provides an automatic welding device for roller production, which is mainly used to solve the problem that when the automatic welding device for roller production processes rollers of different diameters, the coaxiality needs to be measured multiple times during adjustment, which results in cumbersome operation and large errors.

[0007] In order to solve the above-mentioned technical problems, the present application provides an automatic welding device for roller production, including a workbench, wherein a mounting frame is provided on the workbench, a sleeve and a welding gun are provided on the mounting frame, a transverse positioning piece for clamping a bearing seat is provided on the sleeve, and a vertical positioning piece for supporting a cylinder is provided on the mounting frame, wherein the sleeve is provided in the middle of the mounting frame, the transverse positioning piece can rotate around its own axis, and the transverse positioning piece can also move along the direction of its own axis, the transverse positioning piece includes a plug that can expand evenly in all directions, and is used to fix bearing seats of different sizes; the vertical positioning piece includes a lower connecting plate and an upper connecting plate which are symmetrically distributed up and down, and clamping plates are provided on both sides of the lower connecting plate and the upper connecting plate, and V-shaped grooves are provided on the clamping plates, and pushing components for pushing the cylinder to move laterally are provided on both sides of the upper connecting plate, and a driving piece is provided on the workbench, which is used to drive the lower connecting plate and the upper connecting plate to move in opposite or opposite directions at the same time.

[0008] By adopting the above technical solution, when processing rollers of different diameters, there is no need to repeatedly measure the coaxiality of the clamping part and the cylinder, and the two can be placed on the same axis. The operation is simple, which is conducive to reducing errors and improving the welding quality of the rollers.

[0009] Optionally, the pushing assembly includes two symmetrically distributed inclined push plates, and the side of the inclined push plates close to the clamping plate is inclined from top to bottom away from the clamping plate. An exhaust nozzle with a downward opening is provided between the inclined push plates, and an air pipe is connected to the exhaust nozzle. The opposite surfaces of the two inclined push plates are inclined from top to bottom away from the exhaust nozzle.

[0010] By adopting the above technical solution, not only can the offset cylinder be moved to the middle of the vertical positioning piece, thereby improving the welding quality, but also a protective gas laminar flow can be formed at the welding position to prevent harmful gases in the surrounding air from contacting the molten pool, thereby further improving the welding quality.

[0011] Optionally, a horizontal plate is connected in the middle of the two pushing assemblies, a push rod is provided on the top movable sleeve of the upper connecting plate, a spring is provided between the push rod and the upper connecting plate, the bottom of the push rod close to the horizontal plate is an inclined surface, and the side of the pushing assembly close to the push rod is an inclined surface adapted thereto, a sliding groove is provided on the upper connecting plate, a slider is slidingly connected inside the sliding groove, a movable rod is rotatably connected to the top of the slider, and the movable rod abuts against the push rod.

[0012] By adopting the above technical solution, when positioning the cylinder, when one of the pushing assemblies contacts the cylinder, its height will not change, and the cylinder can be pushed to move horizontally. When the two pushing assemblies contact the cylinder at the same time, it proves that the cylinder is centered. At this time, the pushing assembly can be forced to move upward to avoid interference with the vertical positioning piece.

[0013] Optionally, the transverse positioning member includes a transverse tube, a connecting rod is sleeved inside the transverse tube, a conical block is arranged at one end of the connecting rod, a plug is arranged at the end of the transverse tube, an expansion rod is circumferentially arranged inside the plug, a pressure plate is arranged on the expansion rod, an end of the expansion rod away from the pressure plate abuts against the conical block, an elastic member is sleeved on the conical block, an end of the transverse tube away from the plug is rotatably connected to a side plate, a hydraulic cylinder is arranged between the side plate and the mounting frame, a first gear is arranged on the transverse tube, a first cylinder for driving the connecting rod to move is arranged on the side plate, a first motor is arranged on the side plate, and a second gear for driving the first gear to rotate is arranged on the output shaft of the first motor.

[0014] Optionally, the mounting frame is provided with two loading assemblies located on both sides of the vertical positioning member, the loading assembly includes a fixed frame, the fixed frame is provided with an inclined storage plate, the bottom of the storage plate is provided with a slot, a lifting plate is provided inside the slot, a second cylinder for driving the lifting plate to move up and down is provided at the bottom of the storage plate, and a strip hole is provided on one side of the storage plate.

[0015] By adopting the above technical solution, manual loading of the bearing seat can be replaced, manual participation can be reduced, the degree of automation is high, and production efficiency is improved.

[0016] Optionally, an extension tube is provided on the plug.

[0017] By adopting the above technical solution, when the plug drives the corresponding bearing seat to move, the extension tube can block the material to prevent the next bearing seat from falling before the plug is reset.

[0018] Optionally, the driving member includes a bidirectional lead screw, a vertical rod and a second motor, and the lower connecting plate and the upper connecting plate are respectively threadedly connected to the two sides of the bidirectional lead screw.

[0019] Optionally, a side of the plug away from the mounting frame is a tapered surface.

[0020] By adopting the above technical solution, it is convenient for the plug to enter the interior of the bearing seat, and it is convenient to clamp and fix the bearing seat.

[0021] Optionally, a support member for improving the stability of the movable rod is also provided on the upper connecting plate.

[0022] Optionally, the pressing sheet has an arc-shaped cross-section and is elastic.

[0023] By adopting the above technical solution, the clamping force can be evenly dispersed due to its good fit, and the size difference can be compensated for through elastic adaptiveness to stabilize the clamping, thereby protecting the clamped bearing seat and improving the clamping stability.

[0024] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. Through the cooperation between the vertical positioning parts and the horizontal positioning parts, the cylinder body and the bearing seat to be welded can quickly reach a coaxial state, thereby improving the welding quality of the roller. Compared with the traditional method, when processing rollers of different diameters, there is no need to repeatedly measure the coaxiality, and the cylinder body and the bearing seat can be made coaxial, which can reduce errors and improve processing accuracy and processing efficiency.

[0025] 2. Through the cooperation of the pusher assembly and the jet assembly, not only can the cylinder be placed in the middle of the welding device, improving the tolerance of the cylinder placement position, but also a large area of ​​protective gas laminar flow can be formed in the welding area, effectively blocking impurities and harmful gases in the air from invading the molten pool, reducing the generation of defects such as pores and slag inclusions in the weld, which is conducive to further improving the welding quality of the roller.

[0026] 3. Through the cooperation of the loading assembly and the horizontal positioning piece, the loading and unloading of the bearing seat can be replaced by manual labor, so that the pressing and welding of the bearing seat and the cylinder are integrated, with a high degree of automation, reducing manual participation in the welding process, which is conducive to reducing labor costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an automatic welding device for roller production in this application; Figure 2 This is a schematic diagram of the structure of the horizontal positioning member and the vertical positioning member in this application; Figure 3 It is a schematic diagram of the cross-sectional structure of the transverse positioning member in this application; Figure 4 This is a schematic diagram of the top structure of the upper connecting member in this application; Figure 5 This is a schematic diagram of the structure of the pusher assembly in this application; Figure 6 This is a schematic diagram of the structure of the feeding assembly in this application.

[0028] Description of reference numerals: 1, workbench; 11, mounting frame; 12, sleeve; 2, welding gun; 3, horizontal positioning member; 31, horizontal tube; 32, plug; 321, connecting rod; 322, conical block; 323, expansion rod; 324, pressing piece; 325, elastic member; 326, extension tube; 33, hydraulic cylinder; 34, side plate; 35, first gear; 36, first cylinder; 37, first motor; 38, second gear; 4, vertical positioning member; 41, lower connecting plate; 42 , upper connecting plate; 421, inclined push plate; 422, horizontal plate; 423, push rod; 424, spring; 425, movable rod; 426, slider; 427, slide groove; 428, support member; 43, splint; 5, driving member; 51, bidirectional screw; 52, vertical rod; 53, second motor; 6, feeding assembly; 61, fixing frame; 62, storage plate; 63, notch; 64, lifting plate; 65, second cylinder; 66, strip hole; 7, exhaust nozzle; 71, air pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0030] Reference Figure 1 and Figure 2 The present embodiment provides an automatic welding device for roller production, including a workbench 1, a welding part, a driving part 5 and a positioning assembly. The workbench 1 is provided with a mounting frame 11, and the mounting frame 11 is symmetrically provided with two sleeves 12 and a welding part, and the welding part includes a welding gun 2; the positioning assembly includes a transverse positioning part 3 for clamping the bearing seat and a vertical positioning part 4 for supporting the cylinder, the driving part 5 is used to drive the vertical positioning part 4, and the transverse positioning part 3 is movably sleeved inside the sleeve 12.

[0031] Among them, refer to Figure 1 , Figure 2 and Figure 3The transverse positioning member 3 includes a transverse tube 31, a plug 32, a connecting rod 321, a conical block 322, an expansion rod 323, a pressing piece 324, an elastic member 325, a hydraulic cylinder 33, a side plate 34, a first gear 35, a first cylinder 36, a first motor 37 and a second gear 38. The first cylinder 36 is fixed to the mounting frame 11, the output end of the first cylinder 36 is connected to the side plate 34, one end of the transverse tube 31 is rotatably connected to the side plate 34, the connecting rod 321 is movably sleeved inside the transverse tube 31, the first cylinder 36 and the first motor 37 are fixed to the side plate 34, the output end of the first cylinder 36 is rotatably connected to the end of the connecting rod 321, the second gear 38 is fixed to the output end of the first motor 37, the first gear 35 is fixed to the transverse tube 31, and the first gear 35 and the second gear 38 are meshed with each other. The elastic member 325 is sleeved on the plurality of expansion rods 323 and is used for resetting the expansion rods 323. The plurality of expansion rods 323 are distributed in a circle inside the plug 32 and abut against the conical block 322. The pressing piece 324 is fixedly connected to one end of the expansion rod 323 away from the conical block 322. The pressing piece 324 has an arc-shaped cross-section and is elastic. It can evenly disperse the clamping force with good fit, and stabilize the clamping by compensating for size differences through elastic adaptiveness, thereby protecting the clamped bearing seat and improving the clamping stability.

[0032] The first cylinder 36 drives the connecting rod 321 to move so that the conical block 322 squeezes the expansion rod 323, so that the multiple expansion rods 323 drive the pressing plate 324 to expand evenly in all directions. The pressing plate 324 clamps the inner wall of the bearing seat to fix the bearing seat. The first motor 37 drives the second gear 38 to rotate the first gear 35. The first gear 35 drives the cross tube 31 to rotate the plug 32 and the bearing seat, so that the transverse positioning member 3 can not only rotate around its own axis, but also move along the direction of its own axis. After the bearing seat is pressed into the inside of the cylinder, the cylinder is rotated around its own axis during welding for circumferential welding, thereby realizing the integration of pressing and welding of the bearing seat and improving production efficiency.

[0033] Among them, refer to Figure 1 , Figure 2 and Figure 4The vertical positioning member 4 includes a lower connecting plate 41, an upper connecting plate 42, a clamping plate 43, an inclined push plate 421, a horizontal plate 422, a push rod 423, a spring 424, a movable rod 425, a slider 426 and a slide groove 427. The lower connecting plate 41 and the upper connecting plate 42 are symmetrically distributed, and two symmetrically distributed clamping plates 43 are provided at both ends of the lower connecting plate 41 and the upper connecting plate 42. The clamping plates 43 are provided with V-shaped grooves for clamping the cylinder body, which are suitable for cylinders of different diameters. The pushing assembly includes two symmetrically distributed inclined push plates 421. The side of the inclined push plate 421 close to the clamping plate 43 is inclined from top to bottom in a direction away from the clamping plate 43. The horizontal plate 422 is fixed between the two inclined push plates 421. Two symmetrically distributed push rods 423 are movably sleeved on the top of the upper connecting plate 42. The spring 424 is arranged between the push rod 423 and the upper connecting plate 42, the bottom of the push rod 423 close to the cross plate 422 is an inclined surface, the side of the pushing assembly close to the push rod 423 is an inclined surface adapted to the push rod 423, the slide groove 427 is arranged in the middle of one side of the upper connecting plate 42, the slider 426 is slidably connected inside the slide groove 427, the movable rod 425 is rotatably connected to the slider 426, the movable rod 425 abuts against the end of the push rod 423, and a support member 428 for improving the stability of the movable rod 425 is also provided on the upper connecting plate 42.

[0034] When positioning the cylinder, after one of the pusher assemblies contacts the cylinder, the push rod 423 at the corresponding position compresses the spring 424 and pushes one side of the movable rod 425. Since one end of the movable rod 425 is subjected to force, the movable rod 425 is twisted around itself, and the other end of the movable rod 425 squeezes the pusher 423 on the other side, and the pusher 423 on the other side presses the pusher assembly at the corresponding position. The two pusher assemblies are connected and fixed by the cross plate 422, so when one of the pusher assemblies is subjected to force When the push rod 423 is separated from the push assembly, the push assembly is released from the limit and can move upward under pressure to avoid interference with the vertical positioning member 4.

[0035] After the cylinder is placed on the clamping plate 43 on the lower connecting plate 41, the lower connecting plate 41 and the upper connecting plate 42 move in opposite directions at the same time. When the clamping plates 43 on the lower connecting plate 41 and the upper connecting plate 42 are in contact with the cylinder, the cylinder and the transverse positioning member 3 are on the same axis, that is, the cylinder and the bearing seat are coaxial. At this time, the cylinder is also in a centered position, which can improve the tolerance of the cylinder placement position.

[0036] Among them, refer to Figure 1 and Figure 2The driving member 5 includes a bidirectional lead screw 51, a vertical rod 52 and a second motor 53. The lower connecting plate 41 and the upper connecting plate 42 are respectively threadedly connected to the two sides of the bidirectional lead screw 51, and the vertical rod 52 is slidably sleeved inside the lower connecting plate 41 and the upper connecting plate 42.

[0037] The second motor 53 drives the bidirectional lead screw 51 to move the lower connecting plate 41 and the upper connecting plate 42 in opposite or opposite directions at the same time.

[0038] In addition, refer to Figure 5 An exhaust nozzle 7 opening downward is provided between the inclined push plates 421, and an air pipe 71 is connected to the exhaust nozzle 7. The opposite surfaces of the two inclined push plates 421 are inclined from top to bottom in a direction away from the exhaust nozzle 7.

[0039] The air pipe 71 is connected with the external shielding gas, and the exhaust nozzle 7 blows the shielding gas downward. After flowing through the inclined surface of the inclined push plate 421, the area of ​​the shielding gas laminar flow can be increased, and impurities and harmful gases in the air can be effectively blocked from invading the molten pool, thereby reducing the generation of defects such as pores and slag inclusions in the weld, which is beneficial to further improve the welding quality of the roller.

[0040] Reference Figure 2 and Figure 6 Two feeding assemblies 6 located on both sides of the vertical positioning member 4 are arranged on the mounting frame 11, and the feeding assembly 6 includes a fixing frame 61, and an inclined storage plate 62 is arranged on the fixing frame 61, and a notch 63 is arranged at the bottom of the storage plate 62, and a lifting plate 64 is arranged inside the notch 63, and a second cylinder 65 for driving the lifting plate 64 to move up and down is arranged at the bottom of the storage plate 62, and a strip hole 66 is arranged on one side of the storage plate 62.

[0041] The bearing seat to be welded is placed on the storage plate 62. The strip hole 66 allows the larger diameter edge of the bearing seat to pass through and limits the bearing seat at the end of the storage plate 62. When the bearing seat at the corresponding position is clamped and fixed, the second cylinder 65 drives the lifting plate 64 to move downward to open the slot 63. At this time, the horizontal positioning member 3 can drive the bearing seat to move and move it out of the storage plate 62.

[0042] Reference Figure 2 and Figure 3 The plug 32 is provided with an extension tube 326 .

[0043] By providing an extension tube 326 on the plug 32, when the plug 32 drives the corresponding bearing seat to move, the extension tube 326 can block the subsequent bearing seat to prevent the next bearing seat from falling into the groove 63 before the plug 32 is reset.

[0044] Reference Figure 2 and Figure 3 The side of the plug 32 away from the mounting frame 11 is a tapered surface.

[0045] The plug 32 with a conical surface at one end is conducive to entering the interior of the bearing seat, making it convenient to clamp and fix the bearing seat.

[0046] The implementation principle of an automatic welding device for roller production in the embodiment of the present application is as follows: After the cylinder is placed on the top of the clamping plate 43 on the lower connecting plate 41, the driving member 5 drives the lower connecting plate 41 and the upper connecting plate 42 to move in opposite directions at the same time. When the upper connecting plate 42 moves downward, it drives the pushing components on both sides thereof to move downward. Under the action of the pushing components, the cylinder is moved to the central position; when the cylinder is centered, as the upper connecting plate 42 moves downward, the pushing components on both sides are forced to move upward together to avoid interference with the movement of the upper connecting plate 42. When the clamping plates 43 on the upper connecting plate 42 and the lower connecting plate 41 contact the cylinder at the same time, the cylinder and the horizontal positioning member 3 are at the same axis; The hydraulic cylinder 33 drives the cross tube 31 to move along its own axis, so that the plug 32 at the end of the cross tube 31 is inserted into the corresponding bearing seat. The first cylinder 36 drives the connecting rod 321 to move the conical block 322, so that the pressing plate 324 clamps the bearing seat from the inside. Then the second cylinder 65 drives the lifting plate 64 to move downward to open the notch 63. Then the cross tube 31 continues to move forward and the bearing seat enters the inside of the cylinder and presses it. Then the driving member 5 drives the upper connecting plate 42 and the lower connecting plate 41 to move in opposite directions, so that the clamping plate 4 3 is far away from the cylinder to avoid affecting the rotation of the cylinder, the first motor 37 rotates the first gear 35 through the second gear 38, and the first gear 35 rotates the cylinder by driving the cross tube 31, and at this time the welding gun 2 welds the bearing seat and the cylinder; during welding, the shielding gas enters the exhaust nozzle 7 from the air pipe 71, and the exhaust nozzle 7 blows the shielding gas downward, and when it flows through the inclined surface of the inclined push plate 421, the flow path becomes wider, which can increase the area of ​​the shielding gas laminar flow, effectively prevent impurities and harmful gases in the air from invading the molten pool, and improve the welding quality of the roller; After welding is completed, the cross tube 31 drives the plug 32 to reset. When the extension tube 326 and the plug 32 leave the storage plate 62, under the action of gravity, the next bearing seat will roll onto the lifting plate 64 and wait for the next clamping and fixing. It can replace manual loading and unloading of the bearing seat, and integrate the pressing and welding of the bearing seat and the cylinder body, with a high degree of automation, which is conducive to improving production efficiency.

[0047] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An automatic welding device for roller production, comprising a workbench (1), a mounting frame (11) being provided on the workbench (1), a sleeve (12) and a welding gun (2) being provided on the mounting frame (11), a transverse positioning member (3) for clamping a bearing seat being provided on the sleeve (12), and a vertical positioning member (4) for supporting a cylinder being provided on the mounting frame (11), characterized in that: The sleeve (12) is arranged in the middle of the mounting frame (11); the transverse positioning member (3) can rotate around its own axis, and the transverse positioning member (3) can also move along the direction of its own axis; the transverse positioning member (3) includes a plug (32) that can expand evenly in all directions, and is used to fix bearing seats of different sizes; The vertical positioning member (4) comprises a lower connecting plate (41) and an upper connecting plate (42) which are symmetrically distributed in an upper and lower direction. Clamps (43) are provided on both sides of the lower connecting plate (41) and the upper connecting plate (42). V-shaped grooves are provided on the clamps (43). Pushing components for pushing the cylinder to move horizontally are provided on both sides of the upper connecting plate (42). A driving member (5) is provided on the workbench (1) for driving the lower connecting plate (41) and the upper connecting plate (42) to move in opposite or opposite directions at the same time.

2. The automatic welding device for roller production according to claim 1 is characterized in that: The pusher assembly comprises two symmetrically distributed inclined push plates (421), wherein a side of the inclined push plates (421) close to the clamping plate (43) is inclined from top to bottom in a direction away from the clamping plate (43), an exhaust nozzle (7) with an opening facing downward is provided between the inclined push plates (421), an air pipe (71) is connected to the exhaust nozzle (7), and opposing surfaces of the two inclined push plates (421) are inclined from top to bottom in a direction away from the exhaust nozzle (7).

3. The automatic welding device for roller production according to claim 2 is characterized in that: The middle parts of the two pusher assemblies are connected with a transverse plate (422), the top movable sleeve of the upper connecting plate (42) is provided with a push rod (423), a spring (424) is provided between the push rod (423) and the upper connecting plate (42), the bottom of the push rod (423) close to the transverse plate (422) is an inclined surface, the side of the pusher assembly close to the push rod (423) is an inclined surface matched thereto, a slide groove (427) is provided on the upper connecting plate (42), the interior of the slide groove (427) is slidably connected with a slider (426), the top of the slider (426) is rotatably connected with a movable rod (425), and the movable rod (425) abuts against the push rod (423).

4. The automatic welding device for roller production according to claim 1 is characterized in that: The transverse positioning member (3) comprises a transverse tube (31), a connecting rod (321) is sleeved inside the transverse tube (31), a conical block (322) is provided at one end of the connecting rod (321), a plug (32) is arranged at the end of the transverse tube (31), an expansion rod (323) is circumferentially arranged inside the plug (32), a pressing sheet (324) is provided on the expansion rod (323), an end of the expansion rod (323) away from the pressing sheet (324) is in contact with the conical block (322), and an elastic member (322) is sleeved on the conical block (322) 325), one end of the transverse tube (31) away from the plug (32) is rotatably connected to a side plate (34), a hydraulic cylinder (33) is provided between the side plate (34) and the mounting frame (11), a first gear (35) is provided on the transverse tube (31), a first cylinder (36) for driving the connecting rod (321) to move is provided on the side plate (34), a first motor (37) is provided on the side plate (34), and a second gear (38) for driving the first gear (35) to rotate is provided on the output shaft of the first motor (37).

5. The automatic welding device for roller production according to claim 4 is characterized in that: The mounting frame (11) is provided with two loading assemblies (6) located on both sides of the vertical positioning member (4), the loading assembly (6) comprising a fixing frame (61), the fixing frame (61) being provided with an inclined material storage plate (62), the bottom of the material storage plate (62) being provided with a notch (63), the interior of the notch (63) being provided with a lifting plate (64), the bottom of the material storage plate (62) being provided with a second cylinder (65) for driving the lifting plate (64) to move up and down, and one side of the material storage plate (62) being provided with a strip hole (66).

6. The automatic welding device for roller production according to claim 5 is characterized in that: The plug (32) is provided with an extension tube (326).

7. The automatic welding device for roller production according to claim 1 is characterized in that: The driving member (5) comprises a bidirectional lead screw (51), a vertical rod (52) and a second motor (53); the lower connecting plate (41) and the upper connecting plate (42) are respectively threadedly connected to two sides of the bidirectional lead screw (51).

8. The automatic welding device for roller production according to claim 1 is characterized in that: The side of the plug (32) away from the mounting frame (11) is a tapered surface.

9. The automatic welding device for roller production according to claim 3 is characterized in that: The upper connecting plate (42) is also provided with a support member (428) for improving the stability of the movable rod (425).

10. The automatic welding device for roller production according to claim 4, characterized in that: The pressing sheet (324) has an arc-shaped cross section and is elastic.

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