Pole piece pre-rolling device

Abstract

To provide a pre-rolling device for a pole piece, which can solve the problem that the roller diameter of a pre-pressed pole piece is too large and has a negative effect on the elongation rate of the pole piece. [Solution] A passing roller 14 is provided in the right central portion of the opposite ends of two standing plates 2, a separating roller section 5 is provided in the central portion of the opposite ends, an adjustment roller section 6 is provided on the lower side, a lifting roller section 7 is provided in the upper left portion of the opposite ends, and a passing roller 414 is rotatably connected to the left central portion of the opposite ends. A passing roller 313 is rotatably connected to the left and right central portions of the opposite ends of two standing plates 23, a passing roller 212 is rotatably connected to the upper left and right portions of the opposite ends, an upper support roller 8 is rotatably connected to the upper central portion of the opposite ends, and a drive roll section 10 and a work wheel section 9 are provided below the upper support roller 8.

Description

[Technical field]

[0001] This utility model relates to the technical field of rolling devices, in particular to a pre-rolling device for pole pieces. [Background technology]

[0002] The rolling mill for producing pole pieces is an important device used to produce battery pole pieces, especially in the production process of lithium-ion batteries. The pole piece is the core component of the battery, and is usually made of metal foil such as copper foil or aluminum foil, and its surface is coated with active materials such as positive and negative electrode materials. The main role of the rolling mill is to compress the pole pieces coated with active materials to improve their density and thickness consistency, thereby increasing the capacity and performance of the battery.

[0003] Chinese Patent Disclosure No. CN218963612U relates to the technical field of pre-rolling device, in particular to a rolling device which includes a base with two roller rolling mechanisms relatively arranged, and a roller rolling device arrangement area is formed between the two roller rolling mechanisms, and the roller rolling mechanism includes a sliding seat with an upper rolling part and a lower rolling part arranged opposite to each other, and the upper rolling part and the lower rolling part are provided with a first driving mechanism for pre-pressing the tab by increasing the number of intermediate rollers contacting the operating roller, and the intermediate rollers are further arranged symmetrically on both sides of the driving roll, so as to add a compensation structure for rolling force while ensuring the strength in use, so as to offset a part of the rack deformation amount to increase the rolling rigidity and loading capacity, and stabilize the whole, and to produce pole pieces suitable for pre-rolling of each width by adjusting the rolling position by a control mechanism.

[0004] Among the above two sets of components used in rolling the pole pieces, the diameters of the driving roll and the intermediate roller are both large. The diameter of the roller is related to the preload elongation rate of the pole pieces. Under normal circumstances, the smaller the diameter, the more concentrated the local pressure that the pole pieces will receive during roller rolling, which will affect the quality of the produced pole pieces. Summary of the Invention [Problem to be solved by the invention]

[0005] The main objective of this utility model is to provide a pole piece pre-rolling device, which can effectively solve the problem that the roller diameter of the pre-pressed pole piece in the pole piece pre-rolling device is too large, which has a negative impact on the elongation rate of the pre-pressed pole piece. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides the following technical aspects:

[0007] The pole piece preliminary rolling device includes a mounting plate, and standing plates 1 are fixedly connected symmetrically to the front and rear sides of the upper right part of the mounting plate, and standing plates 2 are fixedly connected symmetrically to the front and rear sides of the upper middle part of the mounting plate, and a passing roller 1 is provided in the right center part of the opposite ends of the two standing plates 1, and a separation roller part is provided in the center part of the opposite ends of the two standing plates 1, and an adjustment roller part is provided below the separation roller part, and the two standing plates 1 are provided with a lifting roller part in the upper left part of the opposite ends, and a lifting roller part is provided in the left center of the opposite ends of the two standing plates 1. A passing roller 4 is rotatably connected to both of the left and right central portions of the opposite ends of the two standing plates 2, a passing roller 3 is rotatably connected to both of the upper left and right portions of the opposite ends of the two standing plates 2, a passing roller 2 is rotatably connected to both of the upper left and right portions of the opposite ends of the two standing plates 2, an upper support roller is rotatably connected to both of the upper central portions of the opposite ends of the two standing plates 2, a drive roll portion is provided below the upper support roller, a work wheel portion is provided below the drive roll portion, and a slide rail is fixedly connected to both of the upper central portions of the opposite ends of the two standing plates 2.

[0008] Preferably, the isolation roller unit includes a motor 1 fixedly connected to the rear end center of the standing plate 1 on the rear side, and an isolation roller 1 is fixedly connected to the output end of the motor 1 via a coupling, and a tip of the isolation roller 1 passes through the rear end center of the standing plate 1 on the rear side, extends to the front side of the standing plate 1 on the rear side, and is rotatably connected to the rear end center of the standing plate 1 on the front side.

[0009] Preferably, the adjustment roller unit includes two cylinders 1, each of which is fixedly connected to the front and rear portions of the upper right side of the upper end of the mounting plate, and a connecting plate is fixedly connected to the upper ends of the output end piston rods of the two cylinders 1, and a separating roller 2 is rotatably connected to the opposite ends of the two connecting plates.

[0010] Preferably, the lifting roller section includes two round bars, with fixed blocks connected to the upper and lower ends of the two round bars, the two fixed blocks on the same side being fixed to the upper left corner of the rear end of the front standing plate 1 and the upper left corner of the tip end of the rear standing plate 1, respectively, sliders are slidably connected to the upper and lower sides of the outer surfaces of the two round bars, fixed plates are fixedly connected to both the rear ends of the two sliders on the front side and the tip ends of the two sliders on the rear side, a buffer roller is rotatably connected to both the central parts of the opposite ends of the two fixed plates, and cylinders 2 are fixedly connected to the lower parts of the opposite ends of the two fixed plates, and the two cylinders 2 are fixedly connected to the upper left corners of the opposite ends of the two upright plates 1, respectively.

[0011] Preferably, the drive roll section includes a motor 3 fixedly connected to the rear end center of the rear standing plate 2, an output end of the motor 3 is fixedly connected to the drive roll via a coupling, and a tip of the separation roller 1 passes through the rear end center of the rear standing plate 2, extends to the front side of the rear standing plate 2, and is rotatably connected to the rear end center of the front standing plate 2.

[0012] Preferably, the drive unit includes a drive unit, and three driven units are arranged in a rectangular array on the left side of the drive unit, but the number is not limited to three, and 1 to 100 can be attached depending on the situation.

[0013] Preferably, the driving unit includes a threaded rod and three mounting housings, but is not limited to three, and may be 1 to 100 depending on the situation. A worm wheel is rotatably connected to the inner surface of each of the three mounting housings, a motor 2 is fixedly connected to the left end of each of the three mounting housings, and the output ends of the three motors 2 are fixedly connected to worms via couplings, the right ends of the three worms all pass through the left end of the mounting housing and extend into the mounting housing, the worms and worm wheels on the same side are meshed, and the three worm wheels arranged linearly are all connected to the outer thread of the threaded rod, and the threaded rod is fixedly connected to the left end lower part of the vertical plate 2 on the rear side.

[0014] Preferably, the driven part includes a hydraulic cylinder, the hydraulic cylinder is slidably connected to the upper side of the slide rail and fixedly connected to the right end of the mounting housing at the front side, a fixed housing is fixedly connected to the upper end of the conveying end piston rod of the hydraulic cylinder, and a work wheel is rotatably connected to the inner surface of the fixed housing.

[0015] A plurality of work wheel support rollers are provided below the work wheel. Effect of the Invention

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This utility model changes the pole piece pre-pressing device to a four-roller structure by using the provided support roller, driving roll, work wheel and work wheel support roller, thereby increasing the elongation rate of the pole piece during the pre-pressing process and improving the quality of the pre-pressed pole pieces. The provided work wheel part is separated from the driving roll by raising and lowering the hydraulic cylinder, and then the work wheel is moved sideways to match the pre-pressing work for the tab positions of different areas of pole pieces with different specifications during the pre-pressing of the pole pieces.

[0018] In this utility model, two cylinders 1 are provided to adjust the position of the separating roller 2, thereby changing the distance between the separating roller 2 and the separating roller 1, and changing the magnitude of the preload force on the pole pieces between the separating roller 1 and the separating roller 2. The diameter of the provided upper support roller is larger than that of the driving roll, so that it can provide stable support to the driving roll when both the driving roll part and the work wheel part apply preload to the pole pieces, reduce the deformation of the driving roll during operation, and extend the service life of the driving roll.

[0019] The work wheel support rollers provide stable support to the work wheel, thereby reducing deformation of the work wheel during operation and extending the service life of the drive roll. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is an overall configuration diagram of the present utility model. [Diagram 2] FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention. [Diagram 3] FIG. 1 is an external view of the overall configuration of the present utility model. [Figure 4] FIG. 2 is a schematic diagram of a partial configuration of the present utility model. [Diagram 5] This is a configuration diagram of FIG. 4A of the present utility model. [Figure 6] FIG. 2 is a schematic diagram of a partial planar configuration of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present utility model easier to understand, the present utility model will be further described as follows in conjunction with specific embodiments.

[0022] As shown in FIG. 1, the pole piece pre-rolling device includes a mounting plate 1, and standing plates 12 are fixedly connected symmetrically to the front and rear sides of the upper right part of the mounting plate 1, and standing plates 23 are fixedly connected symmetrically to the front and rear sides of the upper middle part of the mounting plate 1. A passing roller 4 is provided in the right center part of the opposite ends of the two standing plates 12, a separating roller unit 5 is provided in the center part of the opposite ends of the two standing plates 12, and an adjustment roller unit 6 is provided below the separating roller unit 5. The two standing plates 12 are provided with a lifting roller unit 7 in the upper left part of the opposite ends, and a lifting roller unit 8 is provided in the left middle part of the opposite ends of the two standing plates 12. A passing roller 414 is rotatably connected to both of the central portions, a passing roller 313 is rotatably connected to both of the central portions of the left and right sides of the opposite ends of the two standing plates 23, a passing roller 212 is rotatably connected to both of the upper left and right portions of the opposite ends of the two standing plates 23, an upper support roller 8 is rotatably connected to both of the central portions of the upper ends of the opposite ends of the two standing plates 23, a drive roll unit 10 is provided below the upper support roller 8, a work wheel unit 9 is provided below the drive roll unit 10, and a slide rail 11 is fixedly connected to both of the central portions of the lower ends of the opposite ends of the two standing plates 23.

[0023] In the above configuration, the passing rollers 4, isolating rollers 5, adjusting rollers 6, and lifting rollers 7 are similarly arranged on both the left and right sides of the work wheel unit 9 and the driving roll unit 10, and the positions of the pole pieces placed on the passing rollers 4, isolating rollers 5, adjusting rollers 6, and lifting rollers 7 on the left and right sides are all consistent during and at the time of preloading the pole pieces. This embodiment only shows the preloading work process of the passing rollers 4, isolating rollers 5, adjusting rollers 6, and lifting rollers 7 on the right side of the pole pieces, and the left side part will not be described in detail here.

[0024] Specifically, when using the above device, 1-100 followers can be installed according to the specific situation.

[0025] In a specific implementation, the positions of the adjustment roller section 6, the lift roller section 7 and the work wheel section 9 are all adjusted to the required positions of the preload pole piece.

[0026] Next, a pole piece is placed on the passing roller 4, then between the isolating roller section 5 and the adjusting roller section 6, then a pole piece is placed on the passing roller 4 14 and the right-hand passing roller 3 13, again between the driving roll section 10 and the work wheel section 9, and finally a pole piece is placed on the left-hand passing roller 3 13. The arrangement positions of the pole piece between the passing roller 4, isolating roller section 5, adjusting roller section 6 and lifting roller section 7 are the same on the left and right sides.

[0027] As described above, in the process of pre-pressurizing the pole pieces, after the pole piece arrangement by this device is completed, the separating roller unit 5 and the driving roll unit 10 are turned on to start the pre-pressurization work on the pole pieces in cooperation with other units of this device.

[0028] The diameters of the driving roll 102, the work wheel 922 and the work wheel supporting roller 924 are determined according to actual requirements.

[0029] Specifically, the elongation rate of the pole pieces is increased during the preloading process, improving the quality of the produced pole pieces and at the same time adjusting the magnitude of the preload applied to the pole pieces. As shown in Figures 2 and 3, the separating roller unit 5 includes a motor 151 fixedly connected to the rear end center of the rear standing plate 12, and a separating roller 152 is fixedly connected to the output end of the motor 151 via a coupling, and the tip of the separating roller 152 passes through the rear end center of the rear standing plate 12, extends to the front side of the rear standing plate 12, and is rotatably connected to the rear end center of the front standing plate 12.

[0030] As further shown in FIG. 2, the adjustment roller unit 6 includes two cylinders 63, each of which is fixedly connected to the front and rear of the upper right side of the mounting plate 1, and a connecting plate 62 is fixedly connected to the upper ends of the output end piston rods of the two cylinders 63, respectively. The opposite ends of the two connecting plates 62 are both rotatably connected to an isolation roller 61.

[0031] As shown in FIG. 2, the lifting roller unit 7 includes two round bars 72, and fixed blocks 76 are connected to the upper and lower ends of the two round bars 72, respectively. The two fixed blocks 76 on the same side are fixed to the upper left corner of the rear end of the front upright plate 12 and the upper left corner of the tip of the rear upright plate 12, respectively. Sliders 73 are slidably connected to the upper and lower sides of the outer surfaces of the two round bars 72, and fixed plates 74 are fixedly connected to the rear ends of the two front sliders 73 and the tip ends of the two rear sliders 73. A buffer roller 75 is rotatably connected to the center of the opposite ends of the two fixed plates 74. Cylinders 271 are fixedly connected to the lower ends of the opposite ends of the two fixed plates 74, and the two cylinders 271 are fixedly connected to the upper left corners of the opposite ends of the two upright plates 12.

[0032] In a specific implementation, both cylinders 63 are turned on to extend and retract both piston rods to raise and lower the isolating roller 2 61, and during the pre-pressure process on the pole pieces, the distance between the isolating roller 52 and the isolating roller 2 61 is adjusted to the required distance, so that the magnitude of the force exerted by both the isolating roller 1 52 and the isolating roller 2 61 on the pole pieces is changed.

[0033] Next, the two cylinders 71 are turned on to extend and retract both piston rods, and the two sliders 73 on the same side are slid up and down on the round rods 72, thereby moving the buffer rollers 75 up and down and adjusting the buffer rollers 75 to the required position.

[0034] Then, first, the pole piece to be pre-pressed is placed on passing roller 14, then placed between separating roller 152 and separating roller 261, then placed on passing roller 414 and right passing roller 313, and later, when rolling the pole piece, motor 151 is turned on to rotate between separating roller 152 and separating roller 261, and the rolling operation of the pole piece is started.

[0035] During the rolling process, passing roller 1 4, separating roller 1 52, separating roller 2 61, passing roller 4 14 and right passing roller 3 13 are all rotatably connected, so that they can all rotate when subjected to force during the pre-loading process, and can better cooperate with other components to complete the rolling operation of the pole pieces, while preventing the rolling operation of the pole pieces from being hindered by their inability to rotate.

[0036] In the above-mentioned operation, the pole pieces are placed in such a way and the rolling operation is performed, and the conventional pole piece pre-pressing device is changed to a four-roller structure, so that the elongation rate of the pre-pressed pole pieces can be increased, thereby improving the quality of the produced pole pieces.

[0037] Specifically, in order to preload tab areas at different positions of pole pieces with different specifications during the pole piece preloading process, as shown in Figures 3 and 4, the drive roll unit 10 includes a motor 3 101 fixedly connected to the rear end center of the rear standing plate 2 3, and the output end of the motor 3 101 is fixedly connected to a drive roll 102 via a coupling, and the tip of the separation roller 1 52 passes through the rear end center of the rear standing plate 2 3 and extends to the front side of the rear standing plate 2 3, and is rotatably connected to the rear end center of the front standing plate 2 3.

[0038] As shown in FIG. 4, the driving section 91 includes a driving unit 91, and three driven units 92 are arranged in a rectangular array on the left side of the driving unit 91.

[0039] As further shown in FIG. 5, the drive unit 91 includes a threaded rod 914 and three mounting housings 915, a worm wheel 913 is rotatably connected to the inner surface of each of the three mounting housings 915, a motor 2 911 is fixedly connected to the left end of each of the three mounting housings 915, and the output ends of the three motors 2 911 are fixedly connected to worms 912 via couplings. The right ends of the three worms 912 all pass through the left end of the mounting housing 915 and extend into the mounting housing 915, and the worms 912 and worm wheels 913 on the same side are meshed with each other. The three worm wheels 913 arranged linearly are all connected to the outer threads of the threaded rod 914, and the threaded rod 914 is fixedly connected to the lower left end of the upright plate 2 3 on the rear side.

[0040] As shown in FIG. 4 , the driven part 92 includes a hydraulic cylinder 921, which is slidably connected to the upper side of the slide rail 11 and fixedly connected to the right end of the mounting housing 915 at the front side. A fixed housing 923 is fixedly connected to the upper end of the piston rod at the conveying end of the hydraulic cylinder 921. A work wheel 922 is rotatably connected to the inner surface of the fixed housing 923.

[0041] A plurality of work wheel support rollers 924 are provided under the work wheel 922. The number of the work wheel support rollers can be one or more according to the actual requirements, and the arrangement can be in parallel or in series.

[0042] The aforementioned Motor 1 51, Motor 2 911, and Motor 3 101 are all mature means in the prior art, and the present embodiment utilizes these to control the rotation speed, number of rotations, and opening and closing at any time, and the structure and operating principles thereof will not be further described here.

[0043] In a specific implementation, according to the rolling demand of the tab area of ​​the pole piece, motor 2 911 is turned on to rotate worm 912, rotate worm wheel 913, move back and forth along threaded rod 914, move mounting housing 915 back and forth, move hydraulic cylinder 921 back and forth, move fixed housing 923 back and forth, and adjust the positions of work wheel 922 and work wheel support roller 924 to the required positions.

[0044] The three work wheels 922 are controlled by independent motors 911, so that the distances of the three work wheels 922 can be adjusted independently to the required distances, and the mutual cooperation between the drive roll unit 10 and the work wheel unit 9 can satisfy the rolling operation of the tab positions in different areas of the pole pieces with different specifications. Therefore, the extension of the tab area of ​​the rolled pole piece can be further matched with the extension of the coating area, and the surface can be made neat.

[0045] Through the above operations, the adjustment of the positions of the three work wheels 922 is completed, and the tab is placed on the right-side passing roller 3 13, then placed between the drive roll 102 and the three work wheels 922, and then placed on the left-side passing roller 3 13. Then, according to the arrangement positions of the tabs of the right-side passing roller 1 4, isolating roller unit 5, adjusting roller unit 6 and lifting roller unit 7, the arrangement of the tabs of the left-side passing roller 1 4, isolating roller unit 5, adjusting roller unit 6 and lifting roller unit 7 is completed.

[0046] Then, the three hydraulic cylinders 921 are turned on to extend and retract the piston rods to raise and lower the three work wheels 922, thereby changing the distance between the three work wheels 922 and the driving roll 102, and changing the magnitude of the rolling force in the pole piece tab area in cooperation between the three work wheels 922 and the driving roll 102.

[0047] Then, motor one 51 and motor three 101 are turned on to operate both the isolating roller 5 and the driving roll 10, and the rolling of the pole pieces is started in cooperation with other parts. During operation, the diameter of the upper support roller 8 is larger than that of the driving roll 102, so that the driving roll 102 can be stably supported while the driving roll 102 rotates to roll the pole pieces, thereby reducing the deformation of the driving roll 102 during the rolling operation and extending the service life of the driving roll 102.

[0048] It should be noted that the specific mounting methods, circuit connection methods and control methods of Motor 1 51, Motor 2 911 and Motor 3 101 adopted in this utility model are all conventional designs, and therefore will not be described in detail in this utility model.

[0049] The working principle of this utility model is as follows.

[0050] The positions of the adjustment roller section 6, the lift roller section 7 and the work wheel 9 are all adjusted to the required positions of the preload pole piece.

[0051] Then, the pole piece that needs to be preloaded is first placed on pass roller 14, then between separator roller 152 and separator roller 261, then on pass roller 414 and right-hand pass roller 313, then between drive roll 102 and the three work wheels 922, and then on the left-hand pass roller 313.

[0052] Next, the motor 1 51 and the motor 3 101 are turned on to operate the separating roller section 5 and the driving roll section 10, and in cooperation with the other sections, the rolling operation of the pole pieces is started.

[0053] In the above, in this utility model, motor 1 51, motor 3 101, and motor 2 911 may use other types of motors, including servo motors.

[0054] The above has illustrated and described the basic principles, main features and advantages of the present utility model. Those skilled in the art will understand that the present utility model is not limited to the above embodiments, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and that various changes and improvements may be made without departing from the spirit and scope of the present utility model, which are within the scope of the present utility model for which protection is sought. The scope of the present utility model is defined by the appended claims and their equivalents. [Explanation of symbols]

[0055] 1, mounting plate, 2, standing plate 1, 3, standing plate 2, 4, passing roller 1, 5, separation roller section, 51, motor 1, 52, separation roller 1, 6, adjustment roller section, 61, separation roller 2, 62, connection plate, 63, cylinder 1, 7, lifting roller section, 71, cylinder 2, 72, round bar, 73, slider, 74, fixing plate, 75, buffer roller, 76, fixing block, 8, upper support roller, 9, work wheel section, 91, drive section, 911 , motor two, 912, worm, 913, worm wheel, 914, threaded rod, 915, mounting housing, 92, driven part, 921, hydraulic cylinder, 922, work wheel, 923, fixed housing, 924, work wheel support roller, 10, drive roll part, 101, motor three, 102, drive roll, 11, slide rail, 12, passing roller two, 13, passing roller three, 14, passing roller four.

Claims

1. The mounting plate (1) includes a first standing plate (2) fixedly connected to the front and rear sides of the upper right part of the mounting plate (1) in a symmetrical manner, and a second standing plate (3) fixedly connected to the front and rear sides of the upper middle part of the mounting plate (1) in a symmetrical manner. A passing roller (4) is provided in the center of the right side of the opposite ends of the two first standing plates (2). A separating roller section (5) is provided in the center of the opposite ends of the two first standing plates (2). An adjustment roller section (6) is provided below the separating roller section (5). The two first standing plates (2) are provided with a lifting roller section (7) in the upper left part of the opposite ends, and a passing roller (14) is provided in the center of the left side of the opposite ends of the two first standing plates (2). a passing roller (13) is rotatably connected to both the upper left and right central portions of the opposite ends of the two vertical plates (3); a passing roller (12) is rotatably connected to both the upper left and right central portions of the opposite ends of the two vertical plates (3); an upper support roller (8) is rotatably connected to both the upper central portions of the opposite ends of the two vertical plates (3); a drive roll unit (10) is provided below the upper support roller (8), a work wheel unit (9) is provided below the drive roll unit (10), and a slide rail (11) is fixedly connected to both the lower central portions of the opposite ends of the two vertical plates (3).

2. 2. The pole piece preliminary rolling device according to claim 1, characterized in that the separating roller unit (5) includes a motor (51) fixedly connected to the rear end center of the rear standing plate (2), and a separating roller (52) is fixedly connected to the output end of the motor (51) via a coupling, and a tip of the separating roller (52) passes through the rear end center of the rear standing plate (2) and extends to the front side of the rear standing plate (2) and is rotatably connected to the rear end center of the front standing plate (2).

3. The pole piece pre-rolling device according to claim 1, characterized in that the adjusting roller unit (6) includes two cylinders (63), each of which is fixedly connected to the front and rear parts of the upper right side of the upper end of the mounting plate (1), and a connecting plate (62) is fixedly connected to the upper ends of the output end piston rods of the two cylinders (63), and a separating roller (61) is rotatably connected to the opposite ends of the two connecting plates (62).

4. The lifting roller unit (7) includes two round bars (72), fixed blocks (76) are respectively connected to the upper and lower ends of the two round bars (72), the two fixed blocks (76) on the same side are respectively fixed to the upper left upper part of the rear end of the front standing plate (2) and the upper left upper part of the front standing plate (2), sliders (73) are slidably connected to the upper and lower sides of the outer surfaces of the two round bars (72), fixed plates (74) are fixedly connected to the rear ends of the two front sliders (73) and the tip ends of the two rear sliders (73), a buffer roller (75) is rotatably connected to the center parts of the opposite ends of the two fixed plates (74), a cylinder (71) is fixedly connected to the lower parts of the opposite ends of the two fixed plates (74), and the two cylinders (71) are fixedly connected to the upper left upper parts of the opposite ends of the two standing plates (2).

5. The pole piece preliminary rolling device according to claim 1, characterized in that the driving roll unit (10) includes a motor (3) (101) fixedly connected to the rear end center of the rear standing plate (2) (3), an output end of the motor (3) is fixedly connected to a driving roll (102) via a coupling, and a tip of the separation roller (52) passes through the rear end center of the rear standing plate (2) (3) and extends to the front side of the rear standing plate (2) (3), and is rotatably connected to the rear end center of the front standing plate (2) (3).

6. 2. The pole piece pre-rolling apparatus according to claim 1, characterized in that the driving unit (91) includes a driving unit (91) and a plurality of driven units (92) arranged in a rectangular array on the left side of the driving unit (91).

7. 7. The pole piece pre-rolling device according to claim 6, wherein the driving unit (91) includes a threaded rod (914) and a plurality of mounting housings (915), a worm wheel (913) is rotatably connected to the inner surface of each of the mounting housings (915), a motor 2 (911) is fixedly connected to the left end of each of the mounting housings (915), an output end of each of the motors 2 (911) is fixedly connected to a worm (912) via a coupling, the right ends of each of the worms (912) all pass through the left end of the mounting housing (915) and extend into the mounting housing (915), the worms (912) and the worm wheels (913) on the same side are meshed with each other, and the plurality of worm wheels (913) arranged linearly are all screw-connected to the outer surface of the threaded rod (914), and the threaded rod (914) is fixedly connected to the left lower end of the rear upright plate (3).

8. The pole piece pre-rolling device according to claim 7, characterized in that the driven part (92) includes a hydraulic cylinder (921), which is slidably connected to the upper side of the slide rail (11) and fixedly connected to the right end of the mounting housing (915) at the front side, a fixed housing (923) is fixedly connected to the upper end of the conveying end piston rod of the hydraulic cylinder (921), and a work wheel (922) is rotatably connected to the inner surface of the fixed housing (923).

9. 9. The pole piece pre-rolling apparatus according to claim 8, characterized in that a plurality of work wheel support rollers (924) are provided under the work wheel (922).

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