Welding product fixing device and welding machine

Abstract

According to the welding product fixing device and the welding machine, a seat body of the welding product fixing device is provided with a product fixing seat and a product clamping assembly, and a first movable column body, a second movable column body, a first static column body and a second static column body in the product clamping assembly are matched to define a guide channel for containing a welding product; the product fixing seat is positioned in the guide channel and moves along the guide of the guide channel; the first static column body and the second static column body are both adjustably installed on the base body, and the center axis of the first static column body and the center axis of the second static column body are adjusted in the direction close to or away from the center axis of the guide channel. The first movable column body and the second movable column body are movably installed on the seat body, and the first movable column body, the second movable column body, the first static column body and the second static column body are arranged in a matched mode so as to clamp or loosen a welding product on the product fixing seat. The welding machine uses the welding product fixing device. By means of the multi-workpiece welding device, the coaxiality can be guaranteed when long-strip-shaped welding products are welded through multiple workpieces, and the welding precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding machines, and in particular to a welding product fixing device, and also to a welding machine using the welding product fixing device. Background Art

[0002] The spin-melt welding machine uses the heat generated by the friction between the workpieces to melt the contact surface of the workpieces, and then rotates and solidifies the upper and lower workpieces into one by external pressure and drive, while the positioning spin-melt machine rotates at a set time and stops at a set position instantly, forming a permanent fusion. The ultrasonic welding machine uses high-frequency vibration waves to transmit to the surfaces of the two objects to be welded, and under pressure, the surfaces of the two objects rub against each other to form a fusion between the molecular layers.

[0003] When multiple workpieces need to be welded one by one to form a long strip of welding products, this type of welding equipment that requires pressure usually fixes the welding products on the welding platform, and then welds the workpieces to be welded in layers to form a long strip of welding products. Since this type of welding requires pressure, it will squeeze the welding products, causing the welding products to bend and be out of alignment, reducing the welding accuracy of the products. In addition, when welding multiple workpieces, it is necessary to wait for the previous workpiece to complete cooling and shaping before welding the next workpiece, which results in a long production time and relatively low efficiency.

[0004] Therefore, a more optimized welding device needs to be considered. Summary of the invention

[0005] The first object of the present invention is to provide a welding product fixing device which can ensure the coaxiality when welding multiple workpieces of a long strip welding product and improve the welding accuracy.

[0006] The second object of the present invention is to provide a welding machine which can ensure the coaxiality when welding multiple workpieces of a long strip welding product and improve the welding accuracy.

[0007] In order to achieve the above-mentioned main purpose, the welding product fixing device provided by the present invention includes a seat body, characterized in that: the seat body is provided with a product fixing seat and a product clamping assembly, the product clamping assembly includes a first moving column, a second moving column, a first static column and a second static column, the first moving column, the second moving column, the first static column and the second static column are arranged in parallel, the first moving column and the second moving column are arranged adjacent to each other, the first static column and the second static column are arranged adjacent to each other, the first moving column, the second moving column, the first static column and the second static column cooperate to form a guide channel for accommodating welding products, the product fixing seat is located in the guide channel and moves along the guide of the guide channel; the first static column and the second static column are both adjustably mounted on the seat body, and the central axis of the first static column and the central axis of the second static column are adjusted in a direction close to or away from the central axis of the guide channel; the first moving column and the second moving column are movably mounted on the seat body, and the first moving column, the second moving column, the first static column and the second static column are cooperatively arranged to clamp or release the welding product on the product fixing seat.

[0008] It can be seen from the above scheme that the welding product fixing device of the present invention is arranged in parallel by setting the first moving column, the second moving column, the first static column and the second static column to form a guide channel, and the product fixing seat moves along this channel. When welding multiple workpieces to form a long strip product, the guide channel can accurately define the position of each workpiece to ensure that the workpieces are arranged in sequence on the same axis. When welding each workpiece in sequence, the latter workpiece can be accurately positioned on the basis of the coaxiality determined by the previous workpiece, and welded in sequence along the guide channel, ensuring that the entire long strip product always maintains good coaxiality during the welding process, avoiding the problem of axis deviation caused by external force extrusion and lack of continuous guidance, ensuring the coaxiality of multiple workpieces when welding long strip welding products, and improving welding accuracy. The first static column and the second static column can be adjusted and installed, and the width of the guide channel can be flexibly adjusted according to the size of different workpieces, as well as the alignment of the guide channel and the welding head, so as to improve the welding coaxiality accuracy of the long strip product. In addition, the first moving column and the second moving column are movably installed, and cooperate with the static column to achieve clamping and loosening of the workpiece. During the welding process, reliable clamping force can prevent the workpiece from shifting due to thermal deformation or external force during high-temperature welding, effectively avoid coaxiality deviation caused by workpiece movement, and ensure the welding quality of long strip products.

[0009] In a further solution, the seat body is further provided with a first driving device, and the first driving device drives the product fixing seat to move along the guide channel.

[0010] It can be seen that the use of the first driving device to drive the movement of the product fixing seat reduces the links of human operation, thereby reducing the influence of human factors on the coaxiality of welding.

[0011] In a further scheme, the first driving device includes a motor, a screw rod, a connecting bracket and a guide rail. The screw rod and the guide rail are both installed on the seat body along the guide of the guide channel. The motor is driven and connected to one end of the screw rod. The connecting bracket is threadedly connected to the screw rod. The connecting bracket moves on the screw rod along the guide of the guide channel. The connecting bracket is provided with a guide rail connecting part, and the guide rail connecting part is cooperatively connected with the guide rail. The product fixing seat is installed on the connecting bracket.

[0012] It can be seen that the first drive device uses a motor to drive the screw rod, which has good movement stability and can reduce impact and vibration during movement. When welding multiple workpieces, smooth movement can avoid changes in the position of the workpieces caused by vibration and ensure the consistency of welding coaxiality. At the same time, it can be precisely controlled according to the preset procedures and parameters, and the movement of the product fixing seat can be kept consistent each time, improving the stability and reliability of welding quality.

[0013] In a further solution, the connecting bracket is also provided with a weighing component, and the weighing component is used to detect the weight of the welded product on the seat body.

[0014] It can be seen that setting up a weighing component to record the weight data of the welded product can be used as quality traceability information during the welding process. When the quality of the welded product is subsequently inspected, if there is a problem with the welding coaxiality, the weighing data can be consulted to analyze whether it is caused by the weight change of the product during the welding process. At the same time, real-time weight data is also helpful for monitoring the welding process, understanding the weight changes of the product at different stages, judging whether the welding process is normal or whether the welded product meets the welding weight requirements, and promptly discovering potential factors that may affect the welding coaxiality and taking measures to solve them.

[0015] In a further scheme, the weighing assembly includes a second driving device, a pressure sensor and a support member, the second driving device drives the pressure sensor to move in a vertical direction, and the first end of the support member is installed on the pressure sensor; the product fixing seat includes a fixing member and a product mounting member, the fixing member is installed on the connecting bracket, the product mounting member is movably installed on the fixing member, the fixing member is provided with a first through hole extending from the top to the bottom, the product mounting member is provided with a second through hole extending from the top to the bottom, the first through hole and the second through hole are arranged in communication, and the support member movably passes through the first through hole and the second through hole.

[0016] It can be seen that by providing the second driving device, when weighing is required, the pressure sensor can be controlled to lift the welded product, thereby performing a weighing operation.

[0017] In a further solution, the product clamping assembly further includes a third driving device, which drives the first moving column and the second moving column to clamp or release the welded product on the product fixing seat.

[0018] It can be seen that by setting the third driving device, the clamping force applied by the first moving column and the second moving column on the welded product can be accurately controlled. When welding multiple workpieces into long strip products, appropriate and uniform clamping force is essential. If the clamping force is too small, the product may be displaced during the welding process, resulting in a deviation in the welding coaxiality; and if the clamping force is too large, the product may be deformed, which also affects the coaxiality. At the same time, it is convenient to automatically loosen and tighten the product, facilitate welding, and reduce manual operation.

[0019] In a further scheme, the third driving device includes a first cylinder, a second cylinder, a first connecting assembly and a second connecting assembly, the driving end of the first cylinder is connected to the first end of the first connecting assembly, the second end of the first connecting assembly is connected to the first moving column, the driving end of the second cylinder is connected to the first end of the second connecting assembly, and the second end of the second connecting assembly is connected to the second moving column.

[0020] It can be seen that when welding multiple workpieces into long strip products, the first cylinder and the second cylinder can quickly drive the first movable column and the second movable column to clamp or release, and the actions of the two cylinders can maintain good synchronization. The synchronous clamping action can ensure that the welded product is evenly stressed in all directions when it is fixed, and the product will not be offset due to one side being clamped first or the clamping force being inconsistent, which is conducive to ensuring the coaxiality of the welding.

[0021] In a further scheme, the first end of the first static column is mounted on the seat body through a first fixing member, and the second end of the first static column is mounted on the seat body through a second fixing member; the first end of the second static column is mounted on the seat body through a third fixing member, and the second end of the second static column is mounted on the seat body through a fourth fixing member; the seat body is provided with a first slide groove, a second slide groove, a third slide groove and a fourth slide groove, the first fixing member can be adjustably mounted on the first slide groove, the second fixing member can be adjustably mounted on the second slide groove, the third fixing member can be adjustably mounted on the third slide groove, and the fourth fixing member can be adjustably mounted on the fourth slide groove.

[0022] It can be seen that by adjustably installing the first fixing member, the second fixing member, the third fixing member and the fourth fixing member in the corresponding slide grooves respectively, the position of the first static column and the second static column can be conveniently adjusted, thereby changing the size of the guide channel formed by them and the first moving column and the second moving column, and the alignment of the guide channel and the welding machine head can also be adjusted.

[0023] In order to achieve the above second purpose, the welding machine provided by the present invention includes a welding product fixing device and a welding head. The welding product fixing device applies the above welding product fixing device; the welding head is arranged opposite to the guide channel.

[0024] In a further embodiment, the welding machine further comprises a length measuring device for measuring the length of the welded product.

[0025] It can be seen that by providing a length measuring device, the length of the welded product can be measured so as to determine whether the welded product meets the length requirement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of a welding machine embodiment of the present invention.

[0027] Figure 2 It is a structural exploded view of an embodiment of a welding machine of the present invention.

[0028] Figure 3 It is a structural diagram of the welding product fixing device in the welding machine embodiment of the present invention after a part of the shell is hidden.

[0029] Figure 4 It is a structural diagram of a welding product fixing device in an embodiment of a welding machine of the present invention from a top view.

[0030] Figure 5 It is a structural exploded view of a welding product fixing device in an embodiment of a welding machine of the present invention.

[0031] Figure 6 It is a structural diagram of a base body in an embodiment of a welding machine of the present invention.

[0032] Figure 7 It is an installation structure diagram of the first static column, the second static column, the first fixing member, the second fixing member, the third fixing member and the fourth fixing member in an embodiment of the welding machine of the present invention.

[0033] Figure 8 It is an installation structure diagram of a product fixing seat, a connecting bracket and a weighing assembly in an embodiment of a welding machine of the present invention.

[0034] Fig. 9 It is a structural exploded view of the product fixing seat, connecting bracket and weighing assembly in the welding machine embodiment of the present invention.

[0035] Fig.10 It is a structural cross-sectional view of a welding machine embodiment of the present invention in which a product fixing seat, a connecting bracket and a weighing assembly are combined.

[0036] Fig.11 It is an installation structure diagram of the third driving device, the first moving column and the second moving column in the embodiment of the welding machine of the present invention.

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0038] like Figure 1 and Figure 2As shown, in this embodiment, the welding machine includes a welding product fixing device 1 and a welding head 2, and the welding head 2 is installed on the welding product fixing device 1. The welding head 2 can be set according to the type of the welding machine. For example, when the welding machine is an ultrasonic welding machine, the welding head 2 can adopt an ultrasonic welding head, and when the welding machine is a spin-melt welding machine, the welding head 2 can adopt a spin-melt welding head. In this embodiment, the welding head 2 is a spin-melt welding head.

[0039] See also Figure 3 , Figure 4 and Figure 5 In this embodiment, the welding product fixing device 1 includes a seat body 3, and the seat body 3 is provided with a product fixing seat 4 and a product clamping assembly 5. The product clamping assembly 5 includes a first moving column 51, a second moving column 52, a first static column 53 and a second static column 54. The first moving column 51, the second moving column 52, the first static column 53 and the second static column 54 are arranged in parallel, the first moving column 51 and the second moving column 52 are arranged adjacent to each other, the first static column 53 and the second static column 54 are arranged adjacent to each other, the first moving column 51, the second moving column 52, the first static column 53 and the second static column 54 cooperate to form a guide channel 6 for accommodating the welding product 7, and the product fixing seat 4 is located in the guide channel 6 and moves along the guide of the guide channel 6. The welding machine head 2 is arranged opposite to the guide channel 6.

[0040] The first static column 53 and the second static column 54 are both adjustably mounted on the seat body 3, and the central axis of the first static column 53 and the central axis of the second static column 54 are adjusted in the direction close to or away from the central axis of the guide channel 6. The first moving column 51 and the second moving column 52 are movably mounted on the seat body 3, and the first moving column 51, the second moving column 52, the first static column 53 and the second static column 54 are cooperatively arranged to clamp or loosen the welding product 7 on the product fixing seat 4. In this embodiment, the first moving column 51, the second moving column 52, the first static column 53 and the second static column 54 are all arranged in a cylindrical shape.

[0041] See also Figure 6 and Figure 7The seat body 3 is provided with a first slide groove 34, a second slide groove 35, a third slide groove 36 and a fourth slide groove 37. The first end of the first static column 53 is mounted on the seat body 3 through the first fixing member 56, and the second end of the first static column 53 is mounted on the seat body 3 through the second fixing member 57; the first end of the second static column 54 is mounted on the seat body 3 through the third fixing member 58, and the second end of the second static column 54 is mounted on the seat body 3 through the fourth fixing member 59; the first fixing member 56 is adjustably mounted on the first slide groove 34, the second fixing member 57 is adjustably mounted on the second slide groove 35, the third fixing member 58 is adjustably mounted on the third slide groove 36, and the fourth fixing member 59 is adjustably mounted on the fourth slide groove 37. In this embodiment, the seat body 3 includes a top plate 31 and a bottom plate 32, the first slide groove 34 and the third slide groove 36 are arranged on the top plate 31, and the second slide groove 35 and the fourth slide groove 37 are arranged on the bottom plate 32.

[0042] By respectively installing the first fixing member 56, the second fixing member 57, the third fixing member 58 and the fourth fixing member 59 in corresponding slide grooves in an adjustable manner, the positions of the first static column 53 and the second static column 54 can be conveniently adjusted, thereby changing the size of the guide channel 6 formed by them together with the first moving column 51 and the second moving column 52, and at the same time, the alignment of the guide channel 6 and the welding head 2 can also be adjusted.

[0043] The seat body 3 is further provided with a first driving device 8 , which drives the product fixing seat 4 to move along the guide channel 6 .

[0044] In this embodiment, the first driving device 8 includes a motor (not shown in the figure), a screw rod 81, a connecting bracket 82 and a guide rail 83. The screw rod 81 and the guide rail 83 are both installed on the seat body 3 along the guide of the guide channel 6. The motor is driven and connected to one end of the screw rod 81, and the connecting bracket 82 is screwed to the screw rod 81. The connecting bracket 82 moves on the screw rod 81 along the guide of the guide channel 6. The connecting bracket 82 is provided with a guide rail connecting portion 821, and the guide rail connecting portion 821 is connected with the guide rail 83. The product fixing seat 4 is installed on the connecting bracket 82. The first driving device 8 adopts the method of driving the screw rod 81 by a motor, which has good movement stability and can reduce the impact and vibration during the movement. When welding multiple workpieces, the smooth movement can avoid the change of the workpiece position caused by vibration and ensure the consistency of the welding coaxiality. At the same time, it can be precisely controlled according to the preset program and parameters, and the movement of the product fixing seat 4 can be kept consistent each time, thereby improving the stability and reliability of the welding quality.

[0045] In this embodiment, the connecting bracket 82 is also provided with a weighing component 9, and the weighing component 9 is used to detect the weight of the welding product 7 on the base body 3. The weighing component 9 is set to record the weight data of the welding product 7, which can be used as quality traceability information during the welding process. When the welding product 7 is subsequently subjected to quality inspection, if a problem with the welding coaxiality is found, the weighing data can be consulted to analyze whether it is caused by the change in product weight during the welding process. At the same time, real-time weight data is also helpful in monitoring the welding process, understanding the weight changes of the product at different stages, judging whether the welding process is normal or whether the welding product 7 meets the welding weight requirements, and timely discovering potential factors that may affect the welding coaxiality and taking measures to solve them.

[0046] See also Figure 8 , Fig. 9 and Fig.10 The weighing assembly 9 includes a second driving device 91, a pressure sensor 92 and a support member 93. The second driving device 91 drives the pressure sensor 92 to move in the vertical direction. The first end of the support member 93 is mounted on the pressure sensor 92. The product fixing seat 4 includes a fixing member 41 and a product mounting member 42. The fixing member 41 is mounted on the connecting bracket 82. The product mounting member 42 is movably mounted on the fixing member 41. The fixing member 41 is provided with a first through hole 411 that runs from the top to the bottom. The product mounting member 42 is provided with a second through hole 421 that runs from the top to the bottom. The first through hole 411 and the second through hole 421 are arranged in communication. The support member 93 movably penetrates the first through hole 411 and the second through hole 421. By setting the second driving device 91, when weighing is required, the pressure sensor 92 can be controlled to lift the welding product 7, thereby performing a weighing operation. In this embodiment, the second driving device 91 adopts a cylinder.

[0047] In this embodiment, the product clamping assembly 5 further includes a third driving device 55, which drives the first movable column 51 and the second movable column 52 to clamp or release the welding product 7 on the product fixing seat 4. Fig.11The third driving device 55 includes a first cylinder 551, a second cylinder 552, a first connecting assembly 553 and a second connecting assembly 554. The driving end of the first cylinder 551 is connected to the first end of the first connecting assembly 553, the second end of the first connecting assembly 553 is connected to the first moving column 51, the driving end of the second cylinder 552 is connected to the first end of the second connecting assembly 554, and the second end of the second connecting assembly 554 is connected to the second moving column 52. In this embodiment, the number of the first cylinder 551 and the second cylinder 552 is two. By setting the third driving device 55, the clamping force applied by the first moving column 51 and the second moving column 52 on the welding product 7 can be accurately controlled. When welding multiple workpieces into long strip products, appropriate and uniform clamping force is crucial. If the clamping force is too small, the product may be displaced during the welding process, resulting in a deviation in the welding coaxiality. If the clamping force is too large, the product may be deformed, which also affects the coaxiality. At the same time, it is convenient to automatically loosen and tighten the product, facilitate welding, and reduce manual operation.

[0048] In addition, the welding machine further includes a length measuring device 10 for measuring the length of the welded product, the fixed end of the length measuring device 10 is mounted on the welding head 2, and the movable end of the length measuring device 10 is connected to the connecting bracket 82. When the product fixing seat 4 is driven to move, the movable end of the length measuring device 10 moves synchronously with the connecting bracket 82, so that the length of the welded product can be obtained. The length measuring device 10 can adopt a known length measuring device, for example, an electronic tape measure.

[0049] When the welding machine of this embodiment is working, first, the first welding workpiece is fixed on the product fixing seat 4, and the second welding workpiece is fixed on the welding head 2. Then, the first static column 53 and the second static column 54 are adjusted so that the first static column 53 and the second static column 54 abut against the outer peripheral wall of the first welding workpiece, and the first welding workpiece and the second welding workpiece are aligned. After the alignment is completed, the first moving column 51 and the second moving column 52 are controlled to clamp the first welding workpiece. Then, the welding operation is started to complete the welding of the first welding workpiece and the second welding workpiece. After the welding is completed, the first moving column 51 and the second moving column 52 are controlled to release the first welding workpiece. The product fixing seat 4 is controlled to move a preset distance away from the welding head 2 so that the space between the welding product and the welding head 2 meets the distance requirement of the next welding workpiece. After the movement is completed, the first moving column 51 and the second moving column 52 are controlled to clamp the welding product, and the welding of the next welding workpiece is performed. Repeat the above steps until all workpieces are welded. When judging whether the welding product is completed, it can be determined by detecting the weight and length of the product.

[0050] It can be seen from the above scheme that the welding product fixing device 1 of the present invention is arranged in parallel by setting the first moving column 51, the second moving column 52, the first static column 53 and the second static column 54 to form a guide channel 6, and the product fixing seat 4 moves along this channel. When welding multiple workpieces to form a long strip product, the guide channel 6 can accurately define the position of each workpiece to ensure that the workpieces are arranged in sequence on the same axis. When welding each workpiece in sequence, the latter workpiece can be accurately positioned on the basis of the coaxiality determined by the previous workpiece, and welded in sequence along the guide channel 6, ensuring that the entire long strip product always maintains good coaxiality during the welding process, avoiding the problem of axis deviation caused by external force extrusion and lack of continuous guidance, ensuring the coaxiality when welding multiple workpieces into a long strip welding product 7, and improving the welding accuracy. The first static column 53 and the second static column 54 can be adjusted and installed, and the width of the guide channel 6 can be flexibly adjusted according to the size of different workpieces, and the alignment of the guide channel 6 and the welding head 2 can be adjusted to improve the welding coaxiality accuracy of the long strip product. In addition, the first movable column 51 and the second movable column 52 are movably installed, and cooperate with the static column to achieve clamping and loosening of the workpiece. During the welding process, the reliable clamping force can prevent the workpiece from being displaced due to thermal deformation or external force during high-temperature welding, effectively avoid the coaxiality deviation caused by the movement of the workpiece, and ensure the welding quality of the long strip product.

[0051] It should be noted that, although in the present embodiment, the welding machine is arranged in a plumb direction, those skilled in the art should know that the welding machine may also have other placement angles, for example, the welding product fixture 1 and the welding head 2 are arranged horizontally, etc.

[0052] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto, and any non-substantial modifications made to the present invention using this concept also fall within the protection scope of the present invention.

Claims

1. A welding product fixing device, comprising a seat, characterized in that: The seat body is provided with a product fixing seat and a product clamping assembly, the product clamping assembly includes a first moving column, a second moving column, a first static column and a second static column, the first moving column, the second moving column, the first static column and the second static column are arranged in parallel, the first moving column and the second moving column are arranged adjacent to each other, the first static column and the second static column are arranged adjacent to each other, the first moving column, the second moving column, the first static column and the second static column cooperate to form a guide channel for accommodating welding products, the product fixing seat is located in the guide channel and moves along the guide of the guide channel; The first static column and the second static column can be adjustably mounted on the seat body, and the central axis of the first static column and the central axis of the second static column can be adjusted in a direction close to or away from the central axis of the guide channel; The first moving column and the second moving column are movably installed on the seat body, and the first moving column, the second moving column, the first static column and the second static column are cooperatively arranged to clamp or loosen the welding product on the product fixing seat.

2. The welding product fixing device according to claim 1, characterized in that: The seat body is also provided with a first driving device, and the first driving device drives the product fixing seat to move along the guide channel.

3. The welding product fixing device according to claim 2, characterized in that: The first driving device comprises a motor, a screw rod, a connecting bracket and a guide rail, wherein the screw rod and the guide rail are both installed on the seat body along the guide of the guide channel, the motor is drivingly connected to one end of the screw rod, the connecting bracket is screwed to the screw rod, and the connecting bracket moves on the screw rod along the guide of the guide channel; The connecting bracket is provided with a guide rail connecting portion, and the guide rail connecting portion is cooperatively connected with the guide rail; The product fixing seat is installed on the connecting bracket.

4. The welding product fixing device according to claim 3, characterized in that: The connecting bracket is also provided with a weighing assembly, and the weighing assembly is used to detect the weight of the welded product on the seat body.

5. The welding product fixing device according to claim 4, characterized in that: The weighing assembly comprises a second driving device, a pressure sensor and a support member, wherein the second driving device drives the pressure sensor to move in a vertical direction, and a first end of the support member is mounted on the pressure sensor; The product fixing seat includes a fixing part and a product mounting part, the fixing part is installed on the connecting bracket, the product mounting part is movably installed on the fixing part, the fixing part is provided with a first through hole extending from the top to the bottom, the product mounting part is provided with a second through hole extending from the top to the bottom, the first through hole and the second through hole are arranged in communication, and the supporting part movably penetrates the first through hole and the second through hole.

6. The welding product fixing device according to any one of claims 1 to 5, characterized in that: The product clamping assembly further comprises a third driving device, and the third driving device drives the first moving column and the second moving column to clamp or release the welding product on the product fixing seat.

7. The welding product fixing device according to claim 6, characterized in that: The third driving device includes a first cylinder, a second cylinder, a first connecting assembly and a second connecting assembly, the driving end of the first cylinder is connected to the first end of the first connecting assembly, the second end of the first connecting assembly is connected to the first moving column, the driving end of the second cylinder is connected to the first end of the second connecting assembly, and the second end of the second connecting assembly is connected to the second moving column.

8. The welding product fixing device according to any one of claims 1 to 5, characterized in that: The first end of the first static column is mounted on the base body through a first fixing member, and the second end of the first static column is mounted on the base body through a second fixing member; The first end of the second static column is mounted on the base body through a third fixing member, and the second end of the second static column is mounted on the base body through a fourth fixing member; The seat body is provided with a first slide groove, a second slide groove, a third slide groove and a fourth slide groove, the first fixing member is adjustably installed in the first slide groove, the second fixing member is adjustably installed in the second slide groove, the third fixing member is adjustably installed in the third slide groove, and the fourth fixing member is adjustably installed in the fourth slide groove.

9. A welding machine, comprising a welding product fixing device and a welding head, characterized in that: The welding product fixing device applies the welding product fixing device according to any one of claims 1 to 8; The welding head is arranged opposite to the guide channel.

10. The welding machine according to claim 9, characterized in that: The welding machine further comprises a length measuring device for measuring the length of the welded product.

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