Seam welding feeding device

Abstract

The utility model relates to a roll welding feeding device. The roll welding feeding device comprises a rack and a first feeding module arranged on the rack. The first feeding module comprises a first driving shaft, a first pressing roller and a second pressing roller, and the first pressing roller and the second pressing roller are both arranged on the same side of the first driving shaft in the circumferential direction and are both parallel to the first driving shaft. The first pressing roller and the second pressing roller can be controlled to move in the direction close to or away from the first driving shaft, and the second pressing roller can be controlled to move in the axial direction of the first driving shaft so as to be close to or away from the first pressing roller. The first compression roller is used for pressing the overlapped area of the metal foil A, the metal foil B and the composite current collector, and the second compression roller is used for pressing the composite current collector, so that the influence of the height difference between the overlapped area and the composite current collector can be avoided, and the alignment degree of the metal foil A, the metal foil B and the composite current collector in the conveying process is ensured; and the precision and the quality of subsequent welding operation can be improved.

Description

Technical Field

[0001] The present application relates to the field of gas storage technology, and in particular to a rolling welding feeding device. Background Art

[0002] There is now a new lithium battery substrate - a composite current collector, which can effectively prevent the occurrence of short circuits in lithium batteries during use and improve the safety of the battery.

[0003] However, since the polymer base film in the middle of the composite current collector material is an insulating material, the metal foils A and B must be welded to the composite current collector accordingly. The welding mechanisms currently on the market have the phenomenon of skewed feeding when conveying the foils A and B, and cannot ensure the alignment of the metal foil A, the composite current collector, and the metal foil B, resulting in poor welding quality. Utility Model Content

[0004] Based on this, it is necessary to provide a rolling welding feeding device to ensure the alignment of the metal foils A, B and the composite current collector during the feeding process in order to enhance the welding performance.

[0005] A roll welding feeding device comprises a frame and a first feeding module arranged on the frame;

[0006] The first feeding module comprises a first driving shaft, a first pressing roller, a second pressing roller and a first driving member, the first driving member is matched with the first driving shaft and is used to drive the first driving shaft to rotate around its own axis, the first pressing roller and the second pressing roller are both arranged on the same side of the circumference of the first driving shaft and are both parallel to the first driving shaft, and the first pressing roller and the second pressing roller are arranged side by side along the axial direction of the first driving shaft;

[0007] The first drive shaft can be controlled to rotate around its own axis, the first pressure roller and the second pressure roller can be controlled to move in a direction close to or away from the first drive shaft, and the second pressure roller can also be controlled to move axially along the first drive shaft to approach or move away from the first pressure roller.

[0008] In one embodiment, the first feeding module further comprises a shaft extending along the axial direction of the first driving shaft, the second pressing roller is movably connected to the shaft, and the shaft can be controlled to move in a direction close to or away from the first driving shaft, and drive the second pressing roller to move synchronously;

[0009] The second pressing roller can be controlled to move relative to the shaft along the axial direction of the first driving shaft to approach or move away from the first pressing roller.

[0010] In one embodiment, the axial length of the shaft is greater than the axial length of the second pressing roller.

[0011] In one embodiment, the sum of the axial length of the shaft and the axial length of the first pressure roller is smaller than the axial length of the first driving shaft.

[0012] In one embodiment, the first feeding module also includes a first driving member, a second driving member, a third driving member and a fourth driving member, the first driving member is matched with the first driving shaft, and is used to drive the first driving shaft to rotate around its own axis; the second driving member is matched with the first pressure roller, and is used to drive the first pressure roller to move in a direction close to or away from the first driving shaft; the third driving member is matched with the shaft rod, and is used to drive the shaft rod to move in a direction close to or away from the first driving shaft; the fourth driving member is matched with the second pressure roller, and is used to drive the second pressure roller to move along the axial direction of the first driving shaft to approach or move away from the first pressure roller.

[0013] In one embodiment, the first feeding module further comprises a mounting base connected to the frame, and the mounting base comprises a main body, a connecting member and a mounting plate;

[0014] The main body includes a first plate body, a second plate body and a third plate body, and the second plate body and the third plate body are respectively matched with the opposite ends of the first plate body; the axial ends of the first driving shaft are respectively rotatably connected with the second plate body and the third plate body; the mounting plate is connected between the second plate body and the third plate body, and is located obliquely above the first driving shaft, and a discharge port is formed between the mounting plate and the first plate body; the first pressing roller and the second pressing roller are both arranged above the first driving shaft at intervals, and are matched with the mounting plate through the connecting member.

[0015] In one embodiment, the first feeding module also includes a guide rail and a sliding member, the guide rail is connected to the mounting plate and extends axially along the first driving shaft, one end of the sliding member is movably connected to the guide rail, and the other end is fixedly connected to the second pressure roller.

[0016] In one embodiment, it also includes a second feeding module arranged downstream of the first feeding module, the second feeding module includes a fifth driving member and a second driving shaft, the fifth driving member is matched with the second driving shaft and is used to drive the second driving shaft to rotate around its own axis, and the first driving shaft and the second driving shaft have the same rotation direction.

[0017] In one of the embodiments, it further includes a welding module disposed between the first feeding module and the second feeding module, and the welding module is used for welding the material output by the first feeding module.

[0018] In one embodiment, a control module is also included, wherein the control module is used to control the first driving member to drive the first driving shaft to rotate around its own axis, control the first pressure roller to move in a direction close to or away from the first driving shaft, control the second pressure roller to move in a direction close to or away from the first driving shaft, and control the second pressure roller to move axially along the first driving shaft.

[0019] The above-mentioned roll welding feeding device includes a frame and a first feeding module arranged on the frame. The first feeding module includes a first driving shaft, a first pressure roller and a second pressure roller. The first pressure roller and the second pressure roller are both arranged on the same side of the circumference of the first driving shaft and are parallel to the first driving shaft. The first pressure roller and the second pressure roller are arranged side by side along the axial direction of the first driving shaft. Among them, the first driving shaft can be controlled to rotate around its own axis, the first pressure roller and the second pressure roller can be controlled to move in a direction close to or away from the first driving shaft, and the second pressure roller can also be controlled to move along the axial direction of the first driving shaft to approach or move away from the first pressure roller. By pressing the overlapping area of ​​metal foil A, metal foil B and the composite current collector with the first pressing roller and pressing the composite current collector with the second pressing roller, the influence of the height difference between the overlapping area and the composite current collector can be avoided, so as to reduce the probability of metal foil A, metal foil B and the composite current collector being offset during transportation, thereby ensuring the alignment of metal foil A, metal foil B and the composite current collector during transportation, and facilitating improving the accuracy and quality of subsequent welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the roll welding feeding device in this application.

[0021] Figure 2 This is a schematic diagram of the structure of the first feeding module in this application.

[0022] Reference numerals

[0023] Seam welding feeding device 100;

[0024] A first feeding module 200;

[0025] A first driving shaft 20; a first pressing roller 21; a second pressing roller 22; a shaft 23;

[0026] A first driving member 24; a second driving member 25; a third driving member 26;

[0027] Mounting seat 27; main body 271; first plate 2711; second plate 2712; third plate 2713; connecting member 272; mounting plate 273;

[0028] The second feeding module 300; the fifth driving member 30; the second driving shaft 31;

[0029] Frame 400; welding module 500. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] See also Figure 1 The embodiment of the present application provides a roll welding feeding device 100 , which includes a frame 400 and a first feeding module 200 disposed on the frame 400 .

[0037] In the embodiment of the present application, the roll welding feeding device 100 is used in the field of lithium battery technology. The roll welding feeding device 100 is used to weld metal foil A and metal foil B on the composite current collector. The first feeding module 200 is used to convey metal foil A, metal foil B and the composite current collector, and to ensure the alignment of metal foil A, metal foil B and the composite current collector during the conveying process. It can be understood that the application field of the roll welding feeding device 100 is not limited to this. In other embodiments, the roll welding feeding device 100 can be used to weld other materials to be welded, and the first feeding module 200 is used to convey other materials to be welded and ensure the alignment of other materials to be welded during the conveying process.

[0038] The first feeding module 200 includes a first driving shaft 20, a first pressure roller 21 and a second pressure roller 22. The first pressure roller 21 and the second pressure roller 22 are both arranged on the same side of the circumference of the first driving shaft 20 and are both parallel to the first driving shaft 20. The first pressure roller 21 and the second pressure roller 22 are arranged side by side along the axial direction of the first driving shaft 20.

[0039] The first driving shaft 20 can be controlled to rotate around its own axis, and the first pressing roller 21 and the second pressing roller 22 can be controlled to move in a direction close to or away from the first driving shaft 20 .

[0040] In the actual operation process of the roll welding feeding device 100, it is necessary to place the metal foil A, the metal foil B and the composite current collector on the surface of the first drive shaft 20 facing the first pressure roller 21 and the second pressure roller 22 in a preset arrangement, and then control the first drive shaft 20 to rotate around its own axis to achieve the synchronous conveyance of the metal foil A, the metal foil B and the composite current collector. In the process of the first drive shaft 20 conveying the metal foil A, the metal foil B and the composite current collector, it is necessary to control the first pressure roller 21 to be close to the first drive shaft 20, until the first pressure roller 21 presses the overlapping area of ​​the metal foil A, the metal foil B and the composite current collector; at the same time, it is necessary to control the second pressure roller 22 to be close to the first drive shaft 20, until the second pressure roller 22 presses the composite current collector. In this way, by pressing the overlapping area of ​​the metal foil A, the metal foil B and the composite current collector with the first pressing roller 21, and pressing the composite current collector with the second pressing roller 22, the influence of the height difference between the overlapping area and the composite current collector can be avoided, so as to reduce the probability of the metal foil A, the metal foil B and the composite current collector being offset during the transportation process, thereby ensuring the alignment of the metal foil A, the metal foil B and the composite current collector during the transportation process, and facilitating improving the accuracy and quality of subsequent welding operations.

[0041] In addition, the second pressing roller 22 can also be controlled to move along the axial direction of the first driving shaft 20 to approach or move away from the first pressing roller 21. It can be understood that the user can control the second pressing roller 22 to move along the axial direction of the first driving shaft 20 according to the size of the composite current collector to approach or move away from the first pressing roller 21, so that the second pressing roller 22 can adapt to composite current collectors of different sheet widths and can be better pressed on the composite current collector to ensure stable transportation of the composite current collector and reduce the probability of deviation of the composite current collector during transportation.

[0042] It should be noted that when the roll welding feeding device 100 is used in the field of lithium battery technology, the metal foil A, metal foil B and the composite current collector are placed in a preset arrangement, which means that the metal foil A and the metal foil B are respectively located on the opposite side surfaces of the composite current collector, and at least part of the metal foil A and the metal foil B overlap with the composite current collector.

[0043] For some examples, see Figure 1 and Figure 2 The first feeding module 200 also includes a shaft 23 extending axially along the first driving shaft 20, and the second pressing roller 22 is movably connected to the shaft 23. The shaft 23 can be controlled to move in a direction close to or away from the first driving shaft 20, and drive the second pressing roller 22 to move synchronously.

[0044] It can be understood that in the process of the first driving shaft 20 conveying the metal foil A, the metal foil B and the composite current collector, it is necessary to control the shaft 23 to move in the direction close to the first driving shaft 20 to drive the second pressing roller 22 to move synchronously, so that the second pressing roller 22 presses the composite current collector to ensure the stable conveyance of the composite current collector and reduce the probability of the composite current collector being offset during the conveyance process.

[0045] The second pressing roller 22 can be controlled to move relative to the shaft 23 along the axial direction of the first driving shaft 20 to approach or move away from the first pressing roller 21 .

[0046] It should be noted that, since the first drive shaft 20, the first pressure roller 21, the second pressure roller 22 and the shaft 23 are arranged in parallel, the axial directions of the four are the same. In this application, the axial direction of the first drive shaft 20 is used to represent the axial directions of the four.

[0047] It is understandable that the user can control the second pressing roller 22 to move relative to the shaft 23 along the axial direction of the first driving shaft 20 according to the size of the composite current collector to get closer to or away from the first pressing roller 21, so that the second pressing roller 22 can adapt to composite current collectors of different sheet widths.

[0048] For some examples, see Figure 1 and Figure 2 , the axial length of the shaft 23 is greater than the axial length of the second pressing roller 22. Thus, the shaft 23 has a sufficient length to ensure that the second pressing roller 22 moves relative to the shaft 23 along the axial direction of the first driving shaft 20, so as to adjust the position of the second pressing roller 22, thereby making the second pressing roller 22 adaptable to composite current collectors of different sheet widths.

[0049] For some examples, see Figure 1 and Figure 2 The sum of the axial length of the shaft rod 23 and the axial length of the first pressure roller 21 is smaller than the axial length of the first driving shaft 20 .

[0050] It is understandable that the axial length of the first driving shaft 20 needs to meet the width required for the layout of the metal foil A, the metal foil B and the composite current collector. The axial length of the first pressing roller 21 needs to meet the width required for the overlapping area of ​​the metal foil A, the metal foil B and the composite current collector. The axial length of the shaft 23 needs to meet the width required for the layout of the composite current collector to ensure that the user can actually control the movement of the second pressing roller 22 so that the second pressing roller 22 can adapt to composite current collectors of different sheet widths.

[0051] For some examples, see Figure 1 and Figure 2The first feeding module 200 also includes a first driving member 24, a second driving member 25, a third driving member 26 and a fourth driving member. The first driving member 24 is matched with the first driving shaft 20, and is used to drive the first driving shaft 20 to rotate around its own axis; the second driving member 25 is matched with the first pressure roller 21, and is used to drive the first pressure roller 21 to move in a direction close to or away from the first driving shaft 20; the third driving member 26 is matched with the shaft 23, and is used to drive the shaft 23 to move in a direction close to or away from the first driving shaft 20; the fourth driving member is matched with the second pressure roller 22, and is used to drive the second pressure roller 22 to move along the axial direction of the first driving shaft 20 to approach or move away from the first pressure roller 21.

[0052] In the actual operation process of the roll welding feeding device 100, it is necessary to place the metal foil A, the metal foil B and the composite current collector in a specific arrangement on the surface of the first driving shaft 20 facing the first pressure roller 21 and the second pressure roller 22, and then control the first driving member 24 to drive the first driving shaft 20 to rotate around its own axis to achieve the synchronous transportation of the metal foil A, the metal foil B and the composite current collector. In the process of the first driving shaft 20 conveying the metal foil A, the metal foil B and the composite current collector, it is necessary to control the second driving member 25 to drive the first pressure roller 21 close to the first driving shaft 20, until the first pressure roller 21 presses the overlapping area of ​​the metal foil A, the metal foil B and the composite current collector; at the same time, it is necessary to control the third driving member 26 to drive the control shaft 23 close to the first driving shaft 20, and drive the second pressure roller 22 to move synchronously, until the second pressure roller 22 presses the composite current collector. In this way, by pressing the overlapping area of ​​the metal foil A, the metal foil B and the composite current collector with the first pressing roller 21, and pressing the composite current collector with the second pressing roller 22, the influence of the height difference between the overlapping area and the composite current collector can be avoided, so as to reduce the probability of the metal foil A, the metal foil B and the composite current collector being offset during the transportation process, thereby ensuring the alignment of the metal foil A, the metal foil B and the composite current collector during the transportation process, and facilitating improving the accuracy and quality of subsequent welding operations.

[0053] In addition, before controlling the first driving member 24 to drive the first driving shaft 20 to rotate around its own axis, the user also needs to control the fourth driving member to drive the second pressing roller 22 to move along the axial direction of the first driving shaft 20 relative to the shaft 23 according to the size of the composite current collector, so as to approach or move away from the first pressing roller 21, so that the second pressing roller 22 can adapt to composite current collectors of different sheet widths and can better cover the composite current collector to ensure stable transportation of the composite current collector and reduce the probability of deviation of the composite current collector during transportation.

[0054] For some examples, see Figure 1 and Figure 2The first feeding module 200 also includes a mounting base 27 connected to the frame 400 , and the mounting base 27 includes a main body 271 , a connecting member 272 and a mounting plate 273 .

[0055] The main body 271 includes a first plate body 2711, a second plate body 2712 and a third plate body 2713, and the second plate body 2712 and the third plate body 2713 are respectively connected to the opposite ends of the first plate body 2711; the axial ends of the first drive shaft 20 are respectively rotatably connected to the second plate body 2712 and the third plate body 2713; the mounting plate 273 is connected between the second plate body 2712 and the third plate body 2713, and is located obliquely above the first drive shaft 20, and a discharge port is formed between the mounting plate 273 and the first plate body 2711; the first pressure roller 21 and the second pressure roller 22 are both arranged above the first drive shaft 20 at intervals, and are connected to the mounting plate 273 through the connecting piece 272.

[0056] It can be understood that the mounting seat 27 has a simple structure and is convenient for assembling the first driving shaft 20 , the first pressing roller 21 and the second pressing roller 22 , which is beneficial for saving costs.

[0057] For some examples, see Figure 1 and Figure 2 The first driving member 24 is matched with a side of the second plate 2712 or the third plate 2713 away from the first driving shaft 20 .

[0058] The specific style of the first driving member 24 is not limited. In some embodiments, the first driving member 24 is a servo motor, the rotating shaft of the servo motor is matched with the first driving shaft 20, and is used to drive the first driving shaft 20 to rotate around its own axis.

[0059] For some examples, see Figure 1 and Figure 2 The second driving member 25 is connected between the first pressing roller 21 and the connecting member 272 corresponding to the first pressing roller 21 ; the third driving member 26 is connected between the second pressing roller 22 and the connecting member 272 corresponding to the second pressing roller 22 .

[0060] The specific styles of the second driving member 26 and the third driving member 26 are not limited. In some embodiments, the second driving member 26 and the third driving member 26 are both lifting cylinders.

[0061] For some examples, see Figure 1 and Figure 2The first feeding module 200 further includes a guide rail and a sliding member. The guide rail is coupled to the mounting plate 273 and extends along the axial direction of the first driving shaft 20. One end of the sliding member is movably coupled to the guide rail, and the other end is fixedly connected to the second pressing roller 22. It can be understood that the sliding member can be controlled to slide relative to the guide rail and drive the second pressing roller 22 to move synchronously. In this way, the guide rail and the sliding member cooperate with each other to guide and limit the second pressing roller 22, and can improve the smoothness and stability of the movement of the second pressing roller 22.

[0062] For some examples, see Figure 1 and Figure 2 The roll welding feeding device 100 also includes a second feeding module 300 arranged downstream of the first feeding module 200. The second feeding module 300 includes a fifth driving member 30 and a second driving shaft 31. The fifth driving member 30 is matched with the second driving shaft 31 and is used to drive the second driving shaft 31 to rotate around its own axis. The first driving shaft 20 and the second driving shaft 31 have the same rotation direction.

[0063] It can be understood that the metal foil A, metal foil B and the composite current collector are transported to the second drive shaft 31 through one end of the output of the first drive shaft 20. The second drive shaft 31 is driven to rotate around its own axis by controlling the fifth drive member 30, and the rotation direction of the second drive shaft 31 is the same as that of the first drive shaft 20, thereby realizing the transportation of the metal foil A, metal foil B and the composite current collector.

[0064] The specific style of the fifth driving member 30 is not limited. In some embodiments, the fifth driving member 30 is a servo motor, the rotating shaft of the servo motor is matched with the first driving shaft 20, and is used to drive the first driving shaft 20 to rotate around its own axis.

[0065] For some examples, see Figure 1 and Figure 2 The roll welding feeding device 100 further includes a welding module 500 disposed between the first feeding module 200 and the second feeding module 300, and the welding module 500 is used to weld the materials outputted by the first feeding module 200. It can be understood that the metal foil material A, the metal foil material B and the composite current collector outputted by the first driving shaft 20 can be delivered to the welding module 500 in a preset arrangement, and then delivered to the second feeding module 300 after being welded by the welding module 500, and finally delivered to the next process by the second feeding module 300.

[0066] For some examples, see Figure 1 and Figure 2The roll welding feeding device 100 also includes a control module, which is used to control the first driving member 24 to drive the first driving shaft 20 to rotate around its own axis, control the first pressure roller 21 to move in a direction close to or away from the first driving shaft 20, control the second pressure roller 22 to move in a direction close to or away from the first driving shaft 20, and control the second pressure roller 22 to move along the axial direction of the first driving shaft 20.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A roll welding feeding device, characterized in that: It comprises a frame and a first feeding module arranged on the frame; The first feeding module comprises a first driving shaft, a first pressing roller and a second pressing roller, the first pressing roller and the second pressing roller are both arranged on the same side of the circumference of the first driving shaft and are both parallel to the first driving shaft, and the first pressing roller and the second pressing roller are arranged side by side along the axial direction of the first driving shaft; The first drive shaft can be controlled to rotate around its own axis, the first pressure roller and the second pressure roller can be controlled to move in a direction close to or away from the first drive shaft, and the second pressure roller can also be controlled to move axially along the first drive shaft to approach or move away from the first pressure roller.

2. The roll welding feeding device according to claim 1, characterized in that: The first feeding module further comprises a shaft extending along the axial direction of the first driving shaft, the second pressing roller is movably connected to the shaft, the shaft can be controlled to move in a direction close to or away from the first driving shaft, and drives the second pressing roller to move synchronously; The second pressing roller can be controlled to move relative to the shaft along the axial direction of the first driving shaft to approach or move away from the first pressing roller.

3. The roll welding feeding device according to claim 2, characterized in that: The axial length of the shaft is greater than the axial length of the second pressing roller.

4. The roll welding feeding device according to claim 3, characterized in that: The sum of the axial length of the shaft and the axial length of the first pressure roller is smaller than the axial length of the first driving shaft.

5. The roll welding feeding device according to claim 2, characterized in that: The first feeding module also includes a first driving member, a second driving member, a third driving member and a fourth driving member. The first driving member is matched with the first driving shaft, and is used to drive the first driving shaft to rotate around its own axis; the second driving member is matched with the first pressure roller, and is used to drive the first pressure roller to move in a direction close to or away from the first driving shaft; the third driving member is matched with the shaft rod, and is used to drive the shaft rod to move in a direction close to or away from the first driving shaft; the fourth driving member is matched with the second pressure roller, and is used to drive the second pressure roller to move along the axial direction of the first driving shaft to approach or move away from the first pressure roller.

6. The roll welding feeding device according to claim 1, characterized in that: The first feeding module also includes a mounting base connected to the frame, and the mounting base includes a main body, a connecting piece and a mounting plate; The main body includes a first plate body, a second plate body and a third plate body, and the second plate body and the third plate body are respectively matched with the opposite ends of the first plate body; the axial ends of the first driving shaft are respectively rotatably connected with the second plate body and the third plate body; the mounting plate is connected between the second plate body and the third plate body, and is located obliquely above the first driving shaft, and a discharge port is formed between the mounting plate and the first plate body; the first pressing roller and the second pressing roller are both arranged above the first driving shaft at intervals, and are matched with the mounting plate through the connecting member.

7. The roll welding feeding device according to claim 6, characterized in that: The first feeding module also includes a guide rail and a sliding member. The guide rail is connected to the mounting plate and extends axially along the first driving shaft. One end of the sliding member is movably connected to the guide rail, and the other end is fixedly connected to the second pressure roller.

8. The roll welding feeding device according to any one of claims 1 to 7, characterized in that: It also includes a second feeding module arranged downstream of the first feeding module, the second feeding module includes a fifth driving member and a second driving shaft, the fifth driving member is matched with the second driving shaft and is used to drive the second driving shaft to rotate around its own axis, and the first driving shaft and the second driving shaft have the same rotation direction.

9. The roll welding feeding device according to claim 8, characterized in that: It also includes a welding module disposed between the first feeding module and the second feeding module, and the welding module is used for welding the material output by the first feeding module.

10. The roll welding feeding device according to claim 5, characterized in that: It also includes a control module, which is used to control the first driving member to drive the first driving shaft to rotate around its own axis, control the first pressure roller to move in a direction close to or away from the first driving shaft, control the second pressure roller to move in a direction close to or away from the first driving shaft, and control the second pressure roller to move axially along the first driving shaft.

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