CN211804811U - Automatic welding machine - Google Patents

Abstract

The utility model discloses an automatic welding machine, which comprises a frame. A guiding device, a punching device and a material pulling device are arranged in sequence on the frame. A laser welding device is arranged above the punching device, and a laser welding device is arranged on the punching device. For the first avoidance hole corresponding to the device, the material pulling device can pull the material tape through the guiding device, the punching device and the material pulling device in sequence, and the laser welding device can weld the products on the material belt positioned in the first avoidance hole. , the stamping device can position and compress the material strip passing through it, and can cut off the excess material connection points of the welded product. The utility model realizes the automatic welding processing of the product, the operation is simple and convenient, the product processing precision is high, the quality is good, the manpower and time are effectively saved, the production efficiency is improved, the stability and reliability are high, the production control is convenient, and the reduction of Cost of production.

Description

an automatic welding machine

technical field

The utility model relates to the technical field of welding equipment, in particular to an automatic welding machine.

Background technique

With the continuous progress of society and the rapid development of science and technology, the market demand for many products is increasing, and the requirements are getting higher and higher. Therefore, it is necessary to ensure product quality and improve production efficiency in order to meet market demand. Stamping is a forming and processing method of stamping parts with the required shape and size by applying external force to sheets, strips, pipes and profiles by means of presses and dies to cause plastic deformation or separation. Compared with castings and forgings, stamping parts have the characteristics of thinness, uniformity, lightness and strength. They also have the advantages of high processing efficiency, can realize complex size processing, simple operation, high strength, stable quality and good performance. They are widely used. in all areas of the national economy.

At present, during the processing of many stamping products, each part is usually processed separately and then welded together, such as some parts of 3C electronic products (ie, Computer, Communication and ConsumerElectronic for short), etc. However, traditional manual The welding method of the corresponding tool takes up a lot of manpower, takes a long time, is labor-intensive, inconvenient to operate, easily causes product pollution and other defects, poor product processing quality, low stability and reliability, which is not conducive to production control, especially For smaller products, products with complex shapes, etc., the production efficiency is low, the production cost is high, and the competitiveness of the product is reduced.

Utility model content

The utility model proposes an automatic welding machine aiming at the problems existing in the welding of the above-mentioned existing stamping products.

In order to solve at least one of the above-mentioned technical problems, the utility model proposes the following technical solutions:

An automatic welding machine includes a frame, a guiding device, a punching device and a material pulling device are arranged in sequence on the frame, a laser welding device is arranged above the punching device, and a first welding device corresponding to the laser welding device is arranged on the punching device. In one avoidance hole, the material pulling device can pull the material tape through the guiding device, the punching device and the material pulling device in sequence. The laser welding device can weld the product on the material belt positioned in the first avoidance hole, and the punching device can The material strip passing through it is positioned and pressed, and the redundant connection points of the welded product can be cut off.

In some embodiments, the guiding device includes a first support, a feeding plate is disposed on the first support, two first limiting plates are disposed on the feeding plate, and the material belt can pass from between the two first limiting plates. Pass through to limit the rib.

In some embodiments, the opposite end surfaces of the two first limit plates are respectively provided with first grooves for the side edges of the material belt to pass through, and the first grooves penetrate the first limit plates along the feeding direction, and the The two sides respectively pass through the two first groove bodies, which is more stable and reliable.

In some embodiments, the end of the first support away from the punching device is provided with a material guide shaft, and two sidewall wheels are provided on the material guide shaft, and the material belt can pass through between the two sidewall wheels to carry out side blocking. limit.

In some embodiments, the punching device includes a punching die, the first avoidance hole is located at the top of the punching die, and two ends of the punching die along the feeding direction are respectively provided with positioning components for positioning the material strip.

In some embodiments, the laser welding device includes a laser transmitter located above the punching device and a first lifting mechanism that drives the laser transmitter to move up and down.

In some embodiments, the first lifting mechanism is connected to the laser transmitter through a connecting frame, and the connecting frame is provided with a detection mechanism matched with the laser transmitter.

In some embodiments, the material pulling device includes a second support, and the second support is provided with a pulling roller driven by the first motor and a pressing roller assembly matched with the pulling roller, and the pressing roller assembly is located on the pulling roller above.

In some embodiments, the pressing roller assembly includes a first pressing roller and a first central axis parallel to the first pressing roller, two ends of the first central axis and the first pressing roller are respectively rotatably connected with the pendulum block, and the second support There is an adjustment shaft parallel to the first pressure roller and located below the two pendulum blocks, the first central axis and the adjustment shaft are respectively located on both sides of the first pressure roller, and the adjustment shaft is provided with corresponding matching with the two pendulum blocks. The rotation of the eccentric wheel can push the pendulum block and the first pressing roller to swing around the first central axis to adjust the distance between the first pressing roller and the pulling roller.

In some embodiments, the second support is provided with a first cylinder located above the adjustment shaft, the extending end of the first cylinder faces downwards and is connected with a connecting shaft, the connecting shaft is located above the adjustment shaft and two ends of the connecting shaft are respectively connected to the connecting shaft. The two pendulum blocks are connected, and the first cylinder can push the connecting shaft, the pendulum block and the first pressing roller to swing around the first central axis as the axis.

The beneficial effect of the utility model is that during the use process, the material pulling device pulls the material belt through the guiding device, the punching device and the material pulling device in sequence, and when the product processed and formed on the material belt is located in the first avoidance hole on the punching device In the middle, the pulling device stops pulling the material, the punching device first positions and compresses the material strip passing through it, and then the laser welding device above the punching device welds the product on the material strip in the first avoidance hole, and then the punching device then Cut off the excess material connection points of the product after welding, so that the product can be subsequently punched off the material belt, and then the material pulling device continues to pull the material belt to convey the welding of the next product. This process is repeated until the material belt is on. All the products are processed, thus realizing the automatic welding processing of the products. The operation is simple and convenient, the product processing precision is high, the quality is good, it is not easy to cause product pollution and other defects, and the labor intensity is low, which effectively saves manpower and time, and improves production. High efficiency, stability and reliability, facilitate production control, reduce production costs, and enhance product competitiveness.

In addition, in the technical solution of the present utility model, if there is no special description, the technical solution can be realized by adopting the conventional means in the field.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

FIG. 1 is a perspective view of an automatic welding machine for removing a hood according to an embodiment of the present invention.

FIG. 2 is a perspective view of an automatic welding machine provided by an embodiment of the present invention.

FIG. 3 is a perspective view of a guiding device provided by an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a punching device provided by an embodiment of the present invention.

FIG. 5 is a perspective view of a material pulling device provided by an embodiment of the present invention.

6 is a schematic structural diagram of a material pulling device provided by an embodiment of the present invention.

FIG. 7 is a perspective view of a pressing roller assembly provided by an embodiment of the present invention.

8 is a perspective view of a laser welding device provided by an embodiment of the present invention.

Description of reference numerals in the drawings, frame 1, casters with adjustment blocks 11, hood 12, multi-layer warning lights 13, guiding device 2, first support 21, feeding plate 22, first limit plate 23, first Tank body 231, material guide shaft 24, retaining wheel 25, punching device 3, first avoidance hole 301, punching die 31, positioning assembly 32, material pulling device 4, first adjusting screw 401, spring 402, second support 41, the first motor 42, the pulling roller 43, the pulling wheel 431, the pressing roller assembly 44, the first pressing roller 441, the first central shaft 442, the pendulum block 443, the connecting shaft 444, the pressing wheel 445, the connecting head 446 , adjustment shaft 45, eccentric wheel 451, first handle 452, first cylinder 46, transition plate 47, baffle 48, laser welding device 5, laser transmitter 51, first lifting mechanism 52, connecting frame 53, detection mechanism 54 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are a part of the embodiments of the present invention, not all of the embodiments, and are only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by , "two ends", "two sides", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying the indicated elements. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present invention. Furthermore, the terms "first", "secondary", "superior", "subordinate", "primary", "secondary" etc. are used for descriptive purposes only and may simply be used to more clearly distinguish different components, while Not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Fig. 1 is a perspective view of an automatic welding machine provided by an embodiment of the present utility model with a hood removed, Fig. 2 is a perspective view of an automatic welding machine provided by an embodiment of the present utility model, and Fig. 3 is a guide rail provided by an embodiment of the present utility model. A perspective view of a positive device, FIG. 4 is a schematic structural diagram of a punching device provided by an embodiment of the present utility model, FIG. 5 is a perspective view of a material pulling device provided by an embodiment of the present utility model, and FIG. 6 is a material pulling device provided by an embodiment of the present utility model. FIG. 7 is a perspective view of a pressing roller assembly provided by an embodiment of the present invention, and FIG. 8 is a perspective view of a laser welding device provided by an embodiment of the present invention.

Example:

As shown in Figures 1 to 8, an automatic welding machine includes a frame 1. The top of the frame 1 is usually provided with a working bottom plate. The material device 4, the laser welding device 5 is arranged above the punching device 3, the punching device 3 is provided with a first avoidance hole 301 corresponding to the laser welding device 5, and the material pulling device 4 can pull the material tape through the guiding device in turn. 2. The punching device 3 and the pulling device 4, when the product processed and formed on the material belt is located in the first avoidance hole 301 on the punching device 3, the pulling device 4 stops pulling the material, and the punching device 3 first removes the material passing through it. The belt is positioned and pressed, and then the laser welding device 5 above the punching device 3 welds the product on the material belt in the first avoidance hole 301, and then the punching device 3 cuts off the excess connection points of the welded product so as to Subsequently, the product is punched out from the material belt, and then the material pulling device 4 continues to pull the material belt to convey the welding of the next product. This process is cyclically performed until all the products on the material belt are processed.

The guiding device 2 includes a first support 21 , a feeding plate 22 is set on the first support 21 , and two first limiting plates 23 are set on the feeding plate 22 . The feeding plate 22 is conveyed, and the material belt passes between the two first limit plates 23 to limit the edge, so as to prevent the material belt from deviating and ensure that the material belt is conveyed more stably and reliably. 22 can also be provided with a plurality of adjustment holes matched with the two first limit plates 23 so as to adjust the distance between the two first limit plates 23 . Further, the opposite end surfaces of the two first limiting plates 23 are respectively provided with first groove bodies 231 for the side edges of the material belt to pass through. When passing along the feeding plate 22 and between the two first limiting plates 23, the two sides of the material strip pass through the two first groove bodies 231 respectively, so as to prevent the material belt from being upturned, improving stability and reliability higher.

The end of the first support 21 away from the punching device 3 is provided with a material guide shaft 24 , and two rib wheels 25 are arranged on the material guide shaft 24 . The wheels 25 pass through to limit the sidewalls, so as to prevent the material belt from deviating and ensure that the material belt can better enter the feeding plate 22 for conveying.

The punching device 3 includes a punching die 31, and the first avoidance hole 301 is located at the top of the punching die 31. The punching die 31 usually includes a passage for the material strip to pass through for conveying, a template for pressing the material strip, and a corresponding connection point for cutting the product. The two ends of the stamping die 31 along the feeding direction are respectively provided with positioning components 32 for positioning the material tape. The positioning components 32 are usually located below the material tape. The positioning components 32 usually include a positioning needle and a drive for positioning the material tape. The positioning needle moves upward to locate the lifting mechanism of the material belt. There are positioning holes on both sides of the material belt that are matched with the positioning needle. Simple, compact, easy to install and maintain, safe and environmentally friendly.

The laser welding device 5 includes a laser transmitter 51 located above the punching device 3 and a first lifting mechanism 52 that drives the laser transmitter 51 to move up and down. The first lifting mechanism 52 is usually a screw lifter, which can be adjusted manually by a hand wheel, or can be adjusted by hand. The motor is automatically adjusted, and the first lifting mechanism 52 can also adopt other lifting methods such as synchronous belt, gear, and cylinder. Precise and stable welding. Further, the first lifting mechanism 52 is connected to the laser transmitter 51 through a connecting frame 53, and the connecting frame 53 is provided with a detection mechanism 54 matched with the laser transmitter 51, so that the welding precision is higher and the quality is better. The detection mechanism 54 can use industrial cameras, vibration scanners, etc. The vibration scanner is an excellent vector scanning device, and it is a special swing motor. According to the input position signal, the swing motor (galvanometer) can press a certain voltage. It swings a certain angle with the conversion ratio of the angle, so as to precisely control the direction of the laser. It has the advantages of fast welding speed, high precision, stable quality, convenient operation and simple maintenance, etc., which improves the production efficiency of laser welding and increases the accessibility of the laser. , especially suitable for laser precision spot welding of various parts.

The pulling device 4 includes a second support 41. The second support 41 is provided with a pulling roller 43 driven by the first motor 42 and a pressing roller assembly 44 matched with the pulling roller 43. The pressing roller assembly 44 is located in the pulling roller. Above the feeding roller 43, the first motor 42 drives the pulling roller 43 to rotate, and the pressing roller assembly 44 cooperates with the pulling roller 43 to pull the feeding belt for transportation. The pressing roller assembly 44 includes a first pressing roller 441 and a first central axis 442 parallel to the first pressing roller 441. Both ends of the first central axis 442 and the first pressing roller 441 are respectively connected to the pendulum block 443 for rotation. The block 443 is provided with bearings matched with the first central shaft 442 and the first pressing roller 441 respectively, and the second support 41 is provided with an adjusting shaft 45 which is parallel to the first pressing roller 441 and located below the two pendulum blocks 443 , the first central shaft 442 and the adjusting shaft 45 are located on both sides of the first pressing roller 441 respectively, that is, one end of the pendulum block 443 is connected to the first central shaft 442, and the adjusting shaft 45 is located at the end of the pendulum block 443 away from the first central shaft 442 Below, the adjusting shaft 45 is provided with an eccentric wheel 451 corresponding to the two pendulum blocks 443 , and one end of the adjusting shaft 45 is also provided with a first handle 452 for operation. When in use, the first handle 452 rotates the adjustment shaft 45, and the eccentric wheel 451 rotates with the adjustment shaft 45 to push the pendulum block 443 and the first pressing roller 441 to swing around the first central shaft 442, so that the first center shaft 442 can be adjusted. The distance between the pressing roller 441 and the pulling roller 43 is simple in operation, convenient in adjustment, and high in stability and reliability.

The pulling roller 43 is provided with two pulling rollers 431, and the first pressing roller 441 is provided with two pressing rollers 445 corresponding to the two pulling rollers 431. The pressing wheel 445 and the pulling wheel 431 pass through, and the pressing wheel 445 cooperates with the pulling wheel 431 to pull the material belt for transportation. Pass through between, which can prevent the product from being crushed, and is safer and more reliable. In addition, the surface of the pulling wheel 431 can be provided with suitable grooves such as grids to increase the frictional force of the pulling material. The pressing wheel 445 can be a rubber-coated wheel, which is convenient to prevent the material belt from being crushed, so as to ensure more Stable and reliable pulling.

One end of the second support 41 close to the punching device 3 is also provided with a transition plate 47. The transition plate 47 is usually flush with the pressing wheel 445 on the pulling roller 43. The transition plate 47 has the function of supporting and transitioning, so that the material belt can be more Well enter the pulling device 4 to pull the material. The transition plate 47 is provided with two baffles 48, and the material strip passes along the transition plate 47 and between the two transition plates 47, so as to limit the edge of the material belt, thereby preventing the material belt from deviating. 47 can also be provided with a plurality of adjustment holes matched with the two baffles 48 so as to adjust the distance between the two baffles 48 . The opposite end surfaces of the two first baffles 48 can also be respectively provided with grooves for the side edges of the material strip to pass through. Passing through the two grooves respectively, so that the material belt can be prevented from upturning, and the stability and reliability are higher.

A first adjustment screw 401 is disposed above the end of the pendulum block 443 away from the first central axis 442 , the first adjustment screw 401 is threadedly connected to the second support 41 , and the front end of the first adjustment screw 401 is connected to the pendulum block 443 through a spring 402 , the spring 402 is located above the pendulum block 443, and the eccentric wheel 451 and the pendulum block 443 can be elastically matched by the first adjusting screw 401 and the spring 402, which is convenient to adjust the pressure of the first pressing roller 441 on the pulling roller 43. The spring 402 also has For the function of buffering and protection, the pendulum block 443 can be provided with a groove body matched with the lower end of the spring 402, so that the structure is more compact and stable, and the spring 402 can also adopt other suitable elastic parts in the prior art.

The second support 41 is provided with a first air cylinder 46 located above the adjusting shaft 45 . The extending end of the first air cylinder 46 faces downward and is connected to a connecting shaft 444 . The connecting shaft 444 is located above the adjusting shaft 45 and has two ends respectively. It is connected with the two pendulum blocks 443 , that is, the connecting shaft 444 and the first central shaft 442 are also located on both sides of the first pressing roller 441 , and the connecting shaft 444 is usually provided with a connecting head 446 which is connected with the protruding end of the first cylinder 46 . , the first air cylinder 46 can push the connecting shaft 444, the pendulum block 443 and the first pressing roller 441 to swing around the first central axis 442, so that the pressure of the first pressing roller 441 on the material belt can be quickly adjusted to the ideal The tensioning effect greatly improves the debugging efficiency, and the distance that the material pulling device 4 pulls the material belt to convey one product each time, after each material pulling, the positioning component 32 on the punching device 3 first positions the material belt, and then the first cylinder 46 Push the connecting shaft 444, the pendulum block 443 and the first pressing roller 441 to swing around the first central axis 442 to make the pressing wheel 445 release the material belt, the material belt is in a relaxed state, and then the punching device 3 presses the material After the tape, the positioning needle of the positioning assembly 32 can automatically guide the material tape, so that the deviation of the material pulling can be eliminated, and the stability and reliability are higher.

The bottom of the rack 1 can be provided with casters 11 with adjustment blocks. Usually, casters 11 with adjustment blocks are set at the four corners of the bottom of the rack 1 respectively. It is convenient and improves the flexibility and stability of the device. An organic cover 12 is also provided on the frame 1, and the laser welding device 5, the guiding device 2, the punching device 3 and the material pulling device 4 are all located in the hood 12, so as to be safer and more reliable. The multi-layer warning light 13 can also be set on the hood. The multi-layer warning light 13 is also called a multi-layer signal light, an indicator light, an industrial signal light or a tower light. It is usually used for industrial production equipment and transmission control operations. The transmission status is transmitted to machine operators, technicians, production managers and factory personnel by visual and audible signals, and the safety of the equipment is improved by setting up multi-layer warning lights 13 .

During use, the material pulling device 4 pulls the material belt through the guiding device 2, the punching device 3 and the material pulling device 4 in sequence, and the material belt is arranged with processed and formed products in sequence, and the products usually include at least two separate parts , the intersection of the two parts is only in contact with the upper and lower sides. When the product processed and formed on the material belt is located in the first avoidance hole 301 on the punching device 3, the pulling device 4 stops pulling the material, and the punching device 3 first passes through it. The strip is positioned and pressed, and then the laser welding device 5 above the punching device 3 welds the product on the strip in the first avoidance hole 301, that is, the intersection of the two parts of the welded product, and then the punching device 3 welds the product on the strip. The redundant material connection points of the finished product are cut off, so that the product can be subsequently punched off the material belt, and then the material pulling device 4 continues to pull the material belt to convey the welding of the next product. This process is repeated until the material is on the material belt. All processing is completed, thus realizing the automatic welding processing of the product.

Compared with the prior art, the utility model realizes the automatic welding processing of the product, the operation is simple and convenient, the product processing precision is high, the quality is good, the product pollution and other defects are not easily caused, the labor intensity is low, and the manpower and time are effectively saved. , improves production efficiency, high stability and reliability, facilitates production control, reduces production costs, enhances product competitiveness, and is also easy to cooperate with other related equipment, such as processing and molding equipment for products on tapes , After the product welding is completed, the product is punched from the material belt, etc., in order to achieve automatic continuous production, with a wide range of applications.

The above are only some embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, but not to limit it. It should be understood that for those of ordinary skill in the art, without departing from the On the premise of the new creative concept, improvements or replacements can also be made according to the above description, and all these improvements and replacements should belong to the protection scope of the appended claims of the present utility model. In this case, all details may be replaced by equivalent elements, and materials, shapes and dimensions may also be arbitrary.

Claims (10)

1. An automatic welding machine, characterized in that it comprises a frame (1), and the frame (1) is sequentially provided with a guiding device (2), a punching device (3) and a material pulling device (4), A laser welding device (5) is arranged above the punching device (3), a first avoidance hole (301) corresponding to the laser welding device (5) is arranged on the punching device (3), and the punching device (3) is provided with a first escape hole (301) corresponding to the laser welding device (5). The material pulling device (4) can pull the material strip to pass through the straightening device (2), the punching device (3) and the material pulling device (4) in sequence, and the laser welding device (5) can be positioned The product on the material strip in the first avoidance hole (301) is welded, and the punching device (3) can position and compress the material strip passing through it, and can remove the excess product after welding. The connecting point is cut off. 2 . The automatic welding machine according to claim 1 , wherein the straightening device ( 2 ) comprises a first support ( 21 ), and a feeding plate is provided on the first support ( 21 ). 3 . (22), the feeding plate (22) is provided with two first limiting plates (23), and the material belt can pass through between the two first limiting plates (23) to carry out edge limiting bit. 3 . The automatic welding machine according to claim 2 , wherein the opposite end faces of the two first limit plates ( 23 ) are respectively provided with first grooves for the side edges of the material strip to pass through. 4 . (231), the first groove body (231) penetrates the first limiting plate (23) along the feeding direction. 4. An automatic welding machine according to claim 2, characterized in that, a guide shaft (24) is provided at one end of the first support (21) away from the punching device (3), and the guide The material shaft (24) is provided with two sidewall wheels (25), and the material belt can pass through between the two sidewall wheels (25) to limit the sidewall. 5. The automatic welding machine according to claim 1, wherein the punching device (3) comprises a punching die (31), and the first escape hole (301) is located in the punching die (31) The top of the punching die (31) along the feeding direction is respectively provided with positioning components (32) for positioning the material belt. 6. The automatic welding machine according to claim 1, wherein the laser welding device (5) comprises a laser transmitter (51) located above the punching device (3) and drives the laser to emit The first lifting mechanism (52) of the device (51) moving up and down. 7 . The automatic welding machine according to claim 6 , wherein the first lifting mechanism ( 52 ) is connected with the laser transmitter ( 51 ) through a connecting frame ( 53 ), and the connecting frame ( 53) is provided with a detection mechanism (54) matched with the laser transmitter (51). 8. The automatic welding machine according to any one of claims 1 to 7, wherein the material pulling device (4) comprises a second support (41), the second support ( 41) is provided with a pulling roller (43) driven by the first motor (42) and a pressing roller assembly (44) matched with the pulling roller (43), the pressing roller assembly (44) is located at the above the pulling roller (43). 9 . The automatic welding machine according to claim 8 , wherein the pressing roller assembly ( 44 ) comprises a first pressing roller ( 441 ) and a first pressing roller ( 441 ) parallel to the first pressing roller ( 441 ). A central shaft (442), two ends of the first central shaft (442) and the first pressing roller (441) are respectively rotatably connected with the pendulum block (443), and the second support (41) is provided with An adjustment shaft (45) parallel to the first pressing roller (441) and located below the two pendulum blocks (443), the first central shaft (442) and the adjustment shaft (45) are respectively located at the On both sides of the first pressing roller (441), the adjusting shaft (45) is provided with an eccentric wheel (451) corresponding to the two pendulum blocks (443), and the eccentric wheel (451) rotates The swing block (443) and the first pressing roller (441) can be pushed to swing around the first central axis (442) to adjust the first pressing roller (441) and the pulling material Distance of rollers (43). 10. The automatic welding machine according to claim 9, characterized in that, a first cylinder (46) located above the adjusting shaft (45) is provided on the second support (41), and the The protruding end of the first cylinder (46) faces downward and is connected with a connecting shaft (444), the connecting shaft (444) is located above the adjusting shaft (45) and two ends of the connecting shaft (444) are respectively connected to the two A pendulum block (443) is connected, and the first air cylinder (46) can push the connection shaft (444), the pendulum block (443) and the first pressing roller (441) around the first central axis (441). 442) to swing for the axis.

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