Pre-rolling mechanism and feeding adjustment device

Abstract

The utility model provides a pre-rolling mechanism and a feeding adjustment device, which relate to the technical field of winding equipment. The pre-rolling mechanism includes a clamping roller assembly, a supporting roller assembly and a first power member; the supporting roller assembly includes a supporting body and a main driving roller rotatably mounted on the supporting body, the main driving roller is driven to actively rotate, and is used to convey the material belt; the clamping roller assembly includes a pressure roller, the pressure roller and the main driving roller are relatively arranged and can approach or move away from each other to clamp or release the material belt; the first power member is connected to the pressure roller and the main driving roller, and drives the pressure roller and the main driving roller to move synchronously along the width direction of the material belt. When it is found that the transmission track of the material belt is offset, the first power member drives the pressure roller and the main driving roller to move synchronously along the width direction of the material belt, driving the material belt clamped between the pressure roller and the main driving roller to move, thereby correcting the deviation of the material belt, and achieving the technical effect of improving the winding quality of the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of winding equipment, in particular to a pre-rolling mechanism and a material feeding regulating device. Background Art

[0002] Battery cell winding is a manufacturing process in which the anode layer, separator and cathode layer are wound in a certain way to form a battery cell. Before winding, the material strip is conveyed to the winding needle through a pre-winding mechanism.

[0003] At present, most of the pre-winding mechanisms for material strips in the industry are fixed structures; that is, they are designed according to the widest battery cell compatible with the equipment and are backward compatible, but in actual production, the widest or narrowest battery cells are rarely produced; the equipment meets the compatibility requirements, but loses the flexibility of adjusting the distance between the material strip pre-winding mechanism and the winding needle when manufacturing commonly used battery cells; at the same time, the material strip is easily offset along the width direction of the material strip during transmission, and the existing pre-winding mechanism is fixedly installed and does not have the function of correcting the material strip, which affects the alignment of the pole pieces. Utility Model Content

[0004] The utility model aims to provide a pre-rolling mechanism and a material feeding and winding device, so as to alleviate the technical problem in the prior art that the material strip cannot be corrected due to the fixed installation mode of the pre-rolling mechanism.

[0005] In one aspect, an embodiment of the utility model provides a pre-rolling mechanism, including a clamping roller assembly, a supporting roller assembly and a first power member;

[0006] The support roller assembly includes a support body and a main drive roller rotatably mounted on the support body, the main drive roller is driven to actively rotate and is used to convey the material belt; the clamping roller assembly includes a pressure roller, the pressure roller and the main drive roller are arranged relative to each other and can approach or move away from each other to clamp or release the material belt;

[0007] The first power member is connected to the pressing roller and the main driving roller, and drives the pressing roller and the main driving roller to move synchronously along the width direction of the material strip.

[0008] Further, the clamping roller assembly further comprises a moving seat, a first frame, a first connecting shaft and a moving block, the moving seat is slidably mounted on the first frame, the first connecting shaft is movably mounted on the moving seat along the axial direction, and the pressure roller is rotatably mounted on the first connecting shaft;

[0009] One end of the first connecting shaft is connected to the first power member via a moving block, and the first power member drives the pressing roller on the first connecting shaft to move along the width direction of the material strip by controlling the movement of the moving block.

[0010] Furthermore, the first connecting shaft is connected to the moving seat via a linear bearing.

[0011] Furthermore, it also includes a mounting plate, a first plate body and a second plate body, wherein:

[0012] The mounting plate is arranged at the ends of the clamping roller assembly and the supporting roller assembly along the width direction of the material strip; the first plate body is vertically connected to the mounting plate; the second plate body is connected to the first plate body;

[0013] The clamping roller assembly is installed on the first plate body; the moving block is slidably connected to the second plate body through a slide rail; the first power member is installed on the second plate body, and the output end of the first power member drives the moving block to move on the slide rail; the moving block is connected to the first connecting shaft.

[0014] Furthermore, the clamping roller assembly also includes a sensor and a driving member, wherein: the sensor is arranged at one end of the material strip along the width direction; the driving member is arranged on the first frame, and drives the pressure roller to move in a direction approaching or away from the main driving roller.

[0015] Further, the support roller assembly further comprises a second connecting shaft, the second connecting shaft is rotatably mounted on the support body, and the main driving roller is mounted on the second connecting shaft;

[0016] The pre-rolling mechanism further includes a second power member, which is connected to the second connecting shaft to drive the second connecting shaft to rotate.

[0017] Furthermore, the second connecting shaft is connected to the supporting body via a linear rotating bushing, the second power member is connected to the first power member via the moving block, and the first power member drives the second connecting shaft to move in the axial direction.

[0018] The second aspect of the present invention provides a feeding adjustment device, comprising the pre-rolling mechanism, moving mechanism and winding mechanism as described in any one of the above items, wherein the moving mechanism is used to drive the pre-rolling mechanism to approach or move away from the winding mechanism.

[0019] Furthermore, it also includes a mounting plate and a sheet clamping rod and a cutting knife which are sequentially arranged on the mounting plate along the conveying direction of the material belt.

[0020] Furthermore, the winding mechanism includes a turret, and a plurality of working areas are arranged at equal angles on a circle centered on the turret's axis. Each working area is provided with a winding needle. The turret rotates around its axis to drive the winding needle to switch positions between different working areas.

[0021] The embodiments of the present invention bring the following beneficial effects:

[0022] The pre-winding mechanism provided in the present application has the function of correcting the deviation of the material strip; in the pre-winding mechanism, the first power member can drive the pressure roller and the main drive roller to move synchronously along the width direction of the material strip, that is, when it is found that the material strip transmission trajectory is offset, the first power member drives the pressure roller and the main drive roller to move synchronously along the width direction of the material strip, driving the material strip clamped between the pressure roller and the main drive roller to move, thereby correcting the deviation of the material strip, thereby achieving the technical effect of improving the winding quality of the battery cell.

[0023] The feed adjustment device provided in the present application can correct the material strip through the pre-rolling mechanism, thereby achieving the technical effect of improving the winding quality of the battery cell; at the same time, by driving the pre-rolling mechanism away from or close to the winding mechanism through the moving mechanism, the distance adjustment between the pre-rolling mechanism and the winding needle is realized, thereby alleviating the technical problem that the equipment in the prior art is not compatible with the production of multiple battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a three-dimensional structure at one angle of a pre-rolling mechanism provided in an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the three-dimensional structure of the pre-rolling mechanism provided in an embodiment of the utility model from another angle;

[0027] Figure 3 for Figure 2 A magnified view at point A;

[0028] Figure 4 for Figure 2 Enlarged view at B;

[0029] Figure 5 A schematic diagram of the principle of the feed adjustment device provided in the embodiment of the utility model;

[0030] Figure 6 A cross-sectional view of a feed adjustment device provided in an embodiment of the utility model;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of the feed adjustment device provided in the embodiment of the utility model;

[0032] Figure 8 A schematic diagram of the forward structure of the feed regulating device provided in an embodiment of the utility model.

[0033] icon:

[0034] 1-material strip; 2-diaphragm; 3-insert clamping rod; 4-cutter; 10-mounting plate; 11-first plate body; 12-second plate body; 20-winding mechanism; 21-working area;

[0035] 100 - clamping roller assembly; 110 - moving seat; 111 - first frame; 120 - pressure roller; 130 - first connecting shaft; 140 - moving block; 150 - slide rail; 160 - sensor; 170 - driving member; 200 - supporting roller assembly; 210 - supporting body; 220 - main driving roller; 230 - second connecting shaft; 300 - first power member; 400 - second power member; 500 - film combining roller. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Reference Figure 1 The utility model provides a pre-rolling mechanism, comprising a clamping roller assembly 100, a supporting roller assembly 200 and a first power member 300;

[0040] The support roller assembly 200 includes a support body 210 and a main drive roller 220 rotatably mounted on the support body 210, the main drive roller 220 is driven to actively rotate, and is used to convey the material belt 1; the clamping roller assembly 100 includes a pressure roller 120, the pressure roller 120 and the main drive roller 220 are arranged opposite to each other and can approach or move away from each other, so as to clamp or release the material belt 1;

[0041] The first power member 300 is connected to the pressing roller 120 and the main driving roller 220 , and drives the pressing roller 120 and the main driving roller 220 to move synchronously along the width direction of the material strip 1 .

[0042] Optionally, the pressure roller 120 is configured to be able to move in a direction away from or close to the main driving roller 220;

[0043] Or, the main driving roller 220 is configured to be able to move in a direction away from or close to the pressure roller 120;

[0044] Alternatively, the pressure roller 120 is configured to be able to move in a direction away from or approaching the main driving roller 220 , and the main driving roller 220 is configured to be able to move in a direction away from or approaching the pressure roller 120 .

[0045] The above three structures can all achieve the mutual approach or distance between the pressure roller 120 and the main driving roller 220 ; the material strip 1 is clamped or released by the mutual approach or distance between the pressure roller 120 and the main driving roller 220 .

[0046] In this embodiment, the pressure roller 120 is configured to be able to move in a direction away from or approaching the main driving roller 220 .

[0047] When the material strip 1 enters the winding mechanism 20, the pressure roller 120 is controlled to move toward the main drive roller 220 to clamp the material strip 1; under the active rotation drive of the main drive roller 220, the material strip 1 is transmitted along the main drive roller 220 to the winding mechanism 20, and the pressure roller 120 is passively rotated and conveyed by the material strip 1; when the material strip 1 is offset, the pressure roller 120 and the main drive roller 220 are driven by the first power member 300 to move synchronously along the width direction of the material strip 1, driving the material strip 1 clamped between the pressure roller 120 and the main drive roller 220 to move, thereby adjusting the material strip 1 to a suitable transmission route.

[0048] It should be noted that the material strip 1 can be an anode electrode sheet material strip or a cathode electrode sheet material strip, and there is no limitation here.

[0049] Furthermore, the pre-rolling mechanism further includes a mounting plate 10, which is disposed at the ends of the clamping roller assembly 100 and the supporting roller assembly 200 along the width direction of the material strip 1. In this embodiment, the supporting roller assembly 200, the first power member 300 and the clamping roller assembly 100 are all mounted on one side of the mounting plate 10, and when the distance between the pre-rolling mechanism and the winding core needs to be adjusted, it is only necessary to connect the moving mechanism on the other side of the mounting plate 10.

[0050] Reference Figures 2 to 4 The clamping roller assembly 100 further includes a moving seat 110, a first frame 111, a first connecting shaft 130 and a moving block 140, wherein: the pressure roller 120 is rotatably mounted on the first connecting shaft 130, the first connecting shaft 130 is movably mounted on the moving seat 110 along the axial direction, and the moving seat 110 is slidably mounted on the first frame 111;

[0051] One end of the first connecting shaft 130 is connected to the first power member 300 through the moving block 140 . The first power member 300 drives the pressing roller 120 on the first connecting shaft 130 to move along the width direction of the material strip by controlling the movement of the moving block 140 .

[0052] The movable seat 110 is slidably installed on the first frame 111, and the first connecting shaft 130 connected to the pressure roller 120 is installed on the movable seat 110, so as to realize the approach or distance of the pressure roller 120 to the main driving roller 220 during the movement of the movable seat 110; at the same time, a movable block 140 is connected between the first power member 300 and the first connecting shaft 130, and the first power member 300 drives the movement of the first connecting shaft 130 along the axial direction of the movable seat 110 by driving the movement of the movable block 140, thereby realizing the position adjustment of the pressure roller 120 along the width direction of the material strip.

[0053] It should be noted that the first power member 300 may be a motor, which drives the movement of the moving block 140 through structures such as gears and worms.

[0054] Furthermore, the first connecting shaft 130 is connected to the moving seat 110 via a linear bearing.

[0055] The linear bearing is a linear motion system used in conjunction with a cylindrical shaft for linear travel. The linear bearing is provided to ensure that the first connecting shaft 130 can move back and forth on the moving seat 110 .

[0056] Continue to refer to Figures 2 to 4 The pre-rolling mechanism further includes a first plate body 11 and a second plate body 12, wherein: the first plate body 11 is vertically connected to the mounting plate 10; the second plate body 12 is connected to the first plate body 11;

[0057] The clamping roller assembly 100 is installed on the first plate body 11; the moving block 140 is slidably connected to the second plate body 12 through the slide rail 150; the first power member 300 is installed on the second plate body 12, and the output end of the first power member 300 drives the moving block 140 to move on the slide rail 150; the moving block 140 is connected to the first connecting shaft 130.

[0058] In the above structure, the clamping roller assembly 100 is mounted on the mounting plate 10 through a first plate body 11 perpendicular to the mounting plate 10; the first plate body 11 is located between the mounting plate 10 and the second plate body 12, the second plate body 12 is connected to the first plate body 11, the first power member 300 is mounted on the second plate body 12, the moving block 140 is slidably connected to the second plate body 12 through the slide rail 150, the output end of the first power member 300 drives the moving block 140 to move on the slide rail 150, and the end of the moving block 140 facing the pressure roller 120 is connected to the first connecting shaft 130. Driven by the first power member 300, the moving block 140 moves on the slide rail 150, thereby driving the first connecting shaft 130 to move synchronously.

[0059] Continue to refer to Figure 3 The clamping roller assembly 100 also includes a sensor 160 and a driving member 170, wherein: the sensor 160 is arranged at one end of the material strip 1 along the width direction; the driving member 170 is arranged on the first frame 111, and drives the pressure roller 120 to move toward the main driving roller 220.

[0060] In this embodiment, there are two sensors 160, which are respectively arranged at the two ends of the material strip 1 along the width direction; by performing offset detection on the two ends of the material strip 1 along the width direction, the offset amount of the material strip 1 can be obtained more accurately.

[0061] In the above structure, the sensor 160 is used to detect the deviation of the material belt and send a signal to the controller, and the controller is electrically connected to the first power member 300, thereby controlling the deviation correction of the material belt. In this embodiment, the sensor 160 is set as two pairs of opposite-shooting optical fiber sensors 160, each having a transmitting end and a receiving end, and the transmitting end and the receiving end are respectively installed on the first frame 111 and the supporting body 210. The opposite-shooting optical fiber sensor 160 is used to detect the edge of the material belt. If the material belt deviates and blocks the light, the first power member 300 drives the pressure roller 120 and the main drive roller 220 to clamp the material belt to the opposite end of the light blocking to correct the deviation.

[0062] At the same time, the driving member 170 is arranged at the end of the movable seat 110 away from the pressure roller 120. In the present embodiment, the driving member 170 can be selected as a cylinder. When the pressure roller 120 needs to move toward the main driving roller 220, the movable seat 110 is pushed by starting the cylinder, thereby driving the first connecting shaft 130 and the pressure roller 120 to move toward the main driving roller 220.

[0063] Continue to refer to Figure 3and Figure 4 The support roller assembly 200 further includes a second connecting shaft 230, the second connecting shaft 230 is rotatably mounted on the support body 210, and the main driving roller 220 is mounted on the second connecting shaft 230;

[0064] The pre-rolling mechanism further includes a second power member 400 , which is connected to the second connecting shaft 230 to drive the second connecting shaft 230 to rotate.

[0065] Based on the above structure, the second connecting shaft 230 is movably installed on the support body 210 along the axial direction, and the second power member 400 is installed on the moving block 140; when the output end of the first power member 300 drives the moving block 140 to move on the slide rail 150, the moving block 140 drives the first connecting shaft 130 and the second connecting shaft 230 to move synchronously along its own axial direction.

[0066] In this embodiment, the second plate body 12 and the first power member 300, the second power member 400 and other operating components are located in the direction of the pre-rolling mechanism away from the mounting plate 10, which is convenient for the staff to operate the equipment and will not interfere with the connection between the mounting plate 10 and the moving mechanism.

[0067] Furthermore, the second connecting shaft 230 is connected to the supporting body 210 via a linear rotating bushing, the second power member 400 is connected to the first power member 300 via a moving block 140, and the first power member 300 drives the second connecting shaft 230 to move in the axial direction.

[0068] The moving block 140 is connected to the first power member 300 and the second power member 400 respectively. Since the second power member 400 is connected to the main driving roller 220 in the supporting body 210 through the second connecting shaft 230, the overall movement of the main driving roller 220 and the pressure roller 120 is synchronized with the moving path of the moving block 140, thereby improving the deviation correction effect of the material strip.

[0069] It should be noted that the second connecting shaft 230 is connected to the supporting body 210 via a linear rotating bushing, and the provision of the linear rotating bushing enables the second connecting shaft 230 to perform a combined linear and rotating motion without restriction.

[0070] Reference Figure 5 The pre-rolling mechanism also includes a film-joining roller 500 facing the material strip, the film-joining roller 500 and the pressure roller 120 are arranged on the same side of the material strip 1, and the main drive roller 220 is arranged on the side of the material strip 1 away from the film-joining roller 500 and the pressure roller 120; the film-joining roller 500 is configured to be able to move in a direction away from or close to the pressure roller 120 to push the material strip 1 to move, thereby realizing the joining of the cathode electrode sheet material strip and the anode electrode sheet material strip.

[0071] Second, as Figure 5As shown, this embodiment also provides a feed adjustment device, including the above-mentioned pre-rolling mechanism, moving mechanism and winding mechanism 20, the pre-rolling mechanism is installed on one side of the mounting plate 10; the mounting plate 10 is connected to the moving mechanism, and the moving mechanism is used to drive the pre-rolling mechanism to approach or move away from the winding mechanism 20.

[0072] By arranging the pre-rolling mechanism on one side of the mounting plate 10, interference with the moving mechanism on the other side of the mounting plate 10 is avoided. The pre-rolling mechanism on the mounting plate 10 is driven by the moving mechanism to approach or move away from the winding mechanism 20. When replacing winding needles of different specifications or winding battery cells of different specifications, it is convenient to adjust the distance between the pre-rolling mechanism and the winding mechanism 20. This alleviates the technical problem in the prior art that the pre-rolling mechanism is set in a fixed manner and cannot be compatible with the production of multiple battery cells, thereby achieving the technical effect of improving product production efficiency.

[0073] It should be noted that the mobile mechanism can be set up by a mechanism such as a robotic arm that can drive the pre-rolling mechanism as a whole. Through manual setting or monitoring by a detector, the position of the pre-rolling mechanism relative to the battery cells can be adjusted through the mounting plate 10. At the same time, the mounting plate 10 can also be connected to the mobile mechanism by means of threaded connection or the like, which is convenient for on-site installation.

[0074] Continue to refer to Figure 5 and Figure 6 The device also includes a mounting plate 10 and a sheet clamping rod 3 and a cutter 4 sequentially arranged on the mounting plate 10 along the conveying direction of the material strip.

[0075] The insert clamping rod 3 is used for conveying the material strip, and the cutter 4 is used for cutting the material strip according to actual needs. The installation positions of the insert clamping rod 3 and the cutter 4 can be set according to the needs of the user himself.

[0076] Furthermore, the winding mechanism 20 includes a turret, and a plurality of working areas 21 are arranged at equal angles on a circle centered on the turret's axis. Each of the working areas 21 is provided with a winding needle. The turret rotates around its axis to drive the winding needle to switch positions between different working areas 21.

[0077] The multiple work areas 21 are divided into multiple functional workstations according to the actual process flow. In the present embodiment, they are divided into a winding station, a gluing station and a unloading station. The winding station is used to form a battery cell on the winding needle with the material strip that has been filmed in the pre-winding mechanism, the gluing station is used to glue the outer surface of the battery cell after the battery cell is wound, and the unloading station is used to load and unload the battery cell from the winding needle. By arranging multiple winding needles at equal angles on the turret, the winding needles can be switched between different work areas 21 according to the progress of battery cell manufacturing, and the winding needles can be cyclically moved to the corresponding positions of the filming areas in turn.

[0078] When it is necessary to wind battery cells of different specifications, the staff only needs to replace the corresponding winding needle. The pre-winding mechanism can be driven closer to or away from the winding needle through the connection between the mounting plate 10 and the moving mechanism until it reaches the appropriate position, thereby improving the versatility of the equipment.

[0079] Reference Figures 6 to 8 The two material strips 1 in the figure are respectively the cathode electrode strip and the anode electrode strip; the feeding device includes two pre-rolling mechanisms, which are respectively arranged corresponding to the cathode electrode strip and the anode electrode strip, and are respectively used to convey and correct the cathode electrode strip and the anode electrode strip. Under the correction of the two pre-rolling mechanisms, the alignment of the cathode electrode strip and the anode electrode strip is greatly improved, further improving the product quality.

[0080] On the basis of the above structure, the two pre-rolling mechanisms can share the same supporting body 210, that is, the second connecting shafts 230 of the two pre-rolling mechanisms are installed on the same supporting body 210, so as to make the structure of the device more compact.

[0081] Continue to refer to Figure 5 and Figure 6 , the film-joining rollers 500 of the two pre-rolling mechanisms are arranged relative to each other and can move in opposite directions or in opposite directions, so as to push the anode electrode sheet and the cathode electrode sheet to move respectively, so as to realize the film-joining of the cathode electrode sheet and the anode electrode sheet. When working, the two pre-rolling mechanisms respectively convey the two strips 1 (the anode electrode sheet and the cathode electrode sheet), and a diaphragm 2 is arranged between the two strips 1, and a diaphragm 2 is arranged on the side of one strip 1 away from the other strip 1, and the strips 1 and the diaphragm 2 are both arranged between the two film-joining rollers 500. When the two film-joining rollers 500 move in opposite directions, the cathode electrode sheet, the anode electrode sheet and the diaphragm 2 can be joined, so that the strips 1 and the diaphragm 2 can be wound better.

[0082] Continue to refer to Figure 7 The first power member 300 and the second power member 400 of the pre-rolling mechanism are installed at the end of the pre-rolling mechanism away from the mounting plate 10; that is, the first power member 300 and the second power member 400 are opposite to the mounting plate 10 and are arranged at intervals, and the pressure roller 120 and the main drive roller 220 are arranged between the first power member 300, the second power member 400 and the mounting plate 10.

[0083] By installing the first power member 300 and the second power member 400 at the end of the pre-rolling mechanism away from the mounting plate 10, the first power member 300 and the second power member 400 are prevented from interfering with one side of the moving mechanism, and the operation is convenient for the staff.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pre-rolling mechanism, characterized in that: It comprises a clamping roller assembly (100), a supporting roller assembly (200) and a first power member (300), wherein: The support roller assembly (200) comprises a support body (210) and a main drive roller (220) rotatably mounted on the support body (210), wherein the main drive roller (220) is driven to actively rotate and is used to convey the material strip (1); the clamping roller assembly (100) comprises a pressure roller (120), wherein the pressure roller (120) and the main drive roller (220) are arranged relative to each other and can approach or move away from each other to clamp or release the material strip (1); The first power member (300) is connected to the pressure roller (120) and the main drive roller (220), and drives the pressure roller (120) and the main drive roller (220) to move synchronously along the width direction of the material strip (1).

2. The pre-rolling mechanism according to claim 1, characterized in that: The clamping roller assembly (100) further comprises a moving seat (110), a first frame (111), a first connecting shaft (130) and a moving block (140), wherein: The pressure roller (120) is rotatably mounted on the first connecting shaft (130), the first connecting shaft (130) is movably mounted on the movable seat (110) along the axial direction, and the movable seat (110) is slidably mounted on the first frame (111); One end of the first connecting shaft (130) is connected to the first power member (300) via the moving block (140), and the first power member (300) drives the pressure roller (120) on the first connecting shaft (130) to move along the width direction of the material strip (1) by controlling the movement of the moving block (140).

3. The pre-rolling mechanism according to claim 2, characterized in that: The first connecting shaft (130) is connected to the moving seat (110) via a linear bearing.

4. The pre-rolling mechanism according to claim 2, characterized in that: It also includes a mounting plate (10), a first plate body (11) and a second plate body (12), wherein: The mounting plate (10) is arranged at the ends of the clamping roller assembly (100) and the supporting roller assembly (200) along the width direction of the material strip (1); the first plate body (11) is vertically connected to the mounting plate (10); and the second plate body (12) is connected to the first plate body (11); The clamping roller assembly (100) is installed on the first plate body (11); the moving block (140) is slidably connected to the second plate body (12) via a slide rail (150); the first power member (300) is installed on the second plate body (12), and the output end of the first power member (300) drives the moving block (140) to move on the slide rail (150); the moving block (140) is connected to the first connecting shaft (130).

5. The pre-rolling mechanism according to claim 2, characterized in that: The clamping roller assembly (100) further includes a sensor (160) and a driving member (170), wherein: the sensor (160) is disposed at one end of the material strip (1) in the width direction; the driving member (170) is disposed on the first frame (111), and drives the pressure roller (120) to move in a direction approaching or away from the main driving roller (220).

6. The pre-rolling mechanism according to claim 2, characterized in that: The support roller assembly (200) further comprises a second connecting shaft (230), wherein the second connecting shaft (230) is rotatably mounted on the support body (210), and the main driving roller (220) is mounted on the second connecting shaft (230); The pre-rolling mechanism further comprises a second power member (400), wherein the second power member (400) is connected to the second connecting shaft (230) to drive the second connecting shaft (230) to rotate.

7. The pre-rolling mechanism according to claim 6, characterized in that: The second connecting shaft (230) is connected to the supporting body (210) via a linear rotating bushing, the second power member (400) is connected to the first power member (300) via the moving block (140), and the first power member (300) drives the second connecting shaft (230) to move in an axial direction.

8. A feed adjustment device, characterized in that: It comprises a moving mechanism, a winding mechanism (20) and a pre-rolling mechanism as claimed in any one of claims 1 to 7; The moving mechanism is used to drive the pre-rolling mechanism to approach or move away from the winding mechanism (20).

9. The feed adjustment device according to claim 8, characterized in that: It also comprises a mounting plate (10) and a sheet clamping rod (3) and a cutter (4) which are sequentially arranged on the mounting plate (10) along the conveying direction of the material strip (1).

10. The feed adjustment device according to claim 8, characterized in that: The winding mechanism (20) comprises a turret, wherein a plurality of working areas (21) are arranged at equal angles on a circle centered on the turret's axis, each of the working areas (21) being provided with a winding needle, and the turret rotates around its axis to drive the winding needle to switch positions between different working areas (21).

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