Double-roller equipment for solid-state battery pole piece

Abstract

The utility model relates to the field of battery manufacturing, in particular to double-roller equipment for a solid-state battery pole piece, which comprises a feeding assembly, a double-roller assembly, a receiving assembly, a first tray and a second tray, the solid-state battery pole piece in the first tray is fed into the roller assembly through the feeding assembly, the solid-state battery pole piece is rolled through the roller assembly, and the rolled solid-state battery pole piece is contained in the second tray through the receiving assembly. Moreover, the guide rollers can ensure that the solid-state battery pole piece has certain tension and is kept flat when being fed into the roller assembly, so that the thinned solid-state battery pole piece does not have wrinkles, a better rolling effect is achieved, the rolling efficiency is improved, and continuous production is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery manufacturing, concretely relates to a kind of pair of rollers equipment for solid battery pole piece. BACKGROUND

[0002] Lithium ion solid battery is widely concerned due to its high safety, long life and high energy density potential. In the manufacturing process of lithium ion solid battery, the pole piece of solid battery needs to be calendered to achieve the purpose of thinning and densification.

[0003] The pair of rollers machine can roll the pole piece of solid battery through two rollers, to achieve the purpose of thinning and densification of the pole piece of solid battery.

[0004] However, the existing pair of rollers machine needs to manually receive and place the pole piece of solid battery after rolling, which is inconvenient to operate and has low automation degree.

[0005] Therefore, there is an urgent need for a pair of rollers equipment that does not require manual receiving and placing of the pole piece of solid battery, is easy to operate and has high automation degree. SUMMARY

[0006] The utility model provides a kind of pair of rollers equipment for solid battery pole piece, needs to manually receive and place the pole piece of solid battery after rolling, which is inconvenient to operate and has low automation degree.

[0007] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0008] The utility model discloses a kind of roll equipment for solid battery pole piece, including: feeding assembly, roll assembly, material receiving assembly, first tray and second tray, the feeding assembly, the roll assembly and the material receiving assembly are sequentially arranged from top to bottom, the solid battery pole piece is in strip, folding and being contained in the first tray;The feeding assembly includes feeding platform and at least a group of guide wheels, the feeding platform is deviated from the roll assembly by preset distance in horizontal direction, the guide wheel is located in the feeding platform one end close to the roll assembly, the first tray is placed on the feeding platform, one end of the solid battery pole piece is input into the roll assembly by the guide wheel;The roll assembly includes at least a pair of rollers, and the corresponding roll motor of each roller, two the roller is oppositely arranged, the roller is respectively connected with the corresponding roll motor power, gap is left between the two rollers, the solid battery pole piece passes through the gap, falls into the first tray, the gap is less than the thickness of the solid battery pole piece;The material receiving assembly includes material receiving platform and moving module, the second tray is placed on the material receiving platform, the moving module is used to drive the material receiving platform reciprocating motion in horizontal direction, so that the solid battery pole piece folding and being contained in the second tray.

[0009] In some embodiments, the roll assembly further comprises a gap adjusting module, the gap adjusting module comprises a connecting module and an adjusting module; one of the rollers is fixedly connected with the connecting module, the connecting module is movably connected with the adjusting module, and the adjusting module is used to drive the connecting module to move in the horizontal direction, so that the roller fixedly connected with the connecting module moves away from or approaches the other roller.

[0010] In some embodiments, at least one scraper parallel to the roller pressing surface of the roller is arranged on the roller, and the scraper abuts against the roller pressing surface.

[0011] In some embodiments, the roll equipment further comprises a material conveying assembly, which is used to move the first tray from the feeding platform to the material receiving platform, or move the second tray from the material receiving platform to the feeding platform.

[0012] In some embodiments, the material conveying assembly comprises a first horizontal transmission assembly, a second horizontal transmission assembly and a vertical transmission assembly; the first horizontal transmission assembly and the second horizontal transmission assembly are fixedly connected with the vertical transmission assembly respectively; the second horizontal transmission assembly is arranged below the first horizontal transmission assembly, and the distance between the first horizontal transmission assembly and the second horizontal transmission assembly is greater than the thickness of the first tray or the second tray; and the vertical transmission assembly is used to drive the first horizontal transmission assembly and the second horizontal transmission assembly to move in the vertical direction.

[0013] In some embodiments, the first horizontal transmission assembly or the second horizontal transmission assembly comprises a horizontal transmission belt and a first transmission motor; the first transmission motor is in power connection with the horizontal transmission belt.

[0014] In some embodiments, the vertical transmission assembly comprises a first connecting member, a second connecting member, a vertically arranged slide rail and a second transmission motor; one end of the first connecting member is connected with the first horizontal transmission assembly, and the other end is connected with the vertically arranged slide rail; one end of the second connecting member is connected with the second horizontal transmission assembly, and the other end is connected with the vertically arranged slide rail; the second transmission motor is in power connection with the vertically arranged slide rail, and is used to drive the first connecting member and the second connecting member to move in the vertical direction.

[0015] In some embodiments, the moving module comprises a third transmission motor and a transmission belt; the material receiving platform is arranged on the transmission belt, the third transmission motor is in power connection with the transmission belt, and the third transmission motor is used to drive the transmission belt to reciprocate.

[0016] In some embodiments, the moving module comprises a third transmission motor and a screw rod; the material receiving platform is connected with the screw rod through a screw rod sliding block, the third transmission motor is in power connection with the screw rod, and the third transmission motor is used to drive the screw rod to rotate.

[0017] In some embodiments, the roller equipment further comprises a visual detection module and a control module; the visual detection module is arranged at the bottom of the roller assembly and is arranged opposite to the material receiving platform; the visual detection module is in electrical connection with the control module.

[0018] The roller equipment has the following beneficial effects: the feeding assembly is used to send the solid-state battery pole piece in the first tray into the roller assembly, the roller assembly is used to roll the solid-state battery pole piece, and the rolled solid-state battery pole piece is accommodated in the second tray through the material receiving assembly. In addition, the guiding roller can ensure that the solid-state battery pole piece has a certain tension when being sent into the roller assembly, and the solid-state battery pole piece is kept flat, so that the thinned solid-state battery pole piece does not have wrinkles and has better rolling effect. The material receiving assembly can reciprocate in the horizontal direction, and can automatically receive the rolled solid-state battery pole piece, without manual receiving and placing, and the operation is simple and convenient, and the roller equipment has high automation degree. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The roller equipment is provided in a cross-sectional view according to an embodiment of the present application.

[0020] Figure 2 The roller equipment is provided in an oblique view according to an embodiment of the present application.

[0021] Figure 3 Another oblique view of the roll-to-roll device provided by an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the roll-to-roll device provided by an embodiment of the present application;

[0023] Figure 5 A side view of the material conveying assembly provided by an embodiment of the present application.

[0024] In the figure: 1-material feeding assembly; 11-first tray; 12-material feeding platform; 13-guide wheel; 14-solid-state battery pole piece; 15-counterweight compression roller; 2-roll-to-roll assembly; 21-roller; 22-gap adjusting module; 23-roll-to-roll motor; 24-vision detection module; 25-scraper; 31-conveying belt moving module; 311-conveying belt; 32-screw moving module; 321-screw; 322-screw sliding block; 33-second tray; 34-material collecting platform; 35-third transmission motor; 4-material conveying assembly; 41-first horizontal transmission assembly; 42-second horizontal transmission assembly; 43-vertical transmission assembly; 44-first connecting piece; 45-second connecting piece. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] Figure 1 The cross-sectional view of the roll device provided by an embodiment of the application is provided; Figure 2 The oblique view of the roll device provided by an embodiment of the application is provided; Figure 3 Another oblique view of the roll device provided by an embodiment of the application is provided.

[0032] In some embodiments, with reference to Figures 1 to 3 The utility model embodiment provides a roll device for solid-state battery pole piece, including:

[0033] The feeding assembly 1, the roller assembly 2, the receiving assembly 3, the first tray 11 and the second tray 33 are sequentially arranged from top to bottom, the solid-state battery pole piece 14 is in a strip shape and is folded and accommodated in the first tray 11; the feeding assembly 1 comprises a feeding platform 12 and at least one set of guide wheels 13, the feeding platform 12 is horizontally deviated from the roller assembly 2 by a preset distance, the guide wheels 13 are located at one end of the feeding platform 12 close to the roller assembly 2, the first tray 11 is placed on the feeding platform 12, and one end of the solid-state battery pole piece 14 is input into the roller assembly 2 through the guide wheels 13; the roller assembly 2 comprises at least one pair of rollers 21 and a roller motor 23 corresponding to each roller 21, the two rollers 21 are oppositely arranged, the rollers 21 are respectively and powerfully connected with the roller motors 23 corresponding thereto, a gap is left between the two rollers 21, the solid-state battery pole piece 14 passes through the gap and falls into the first tray 11, and the interval of the gap is smaller than the thickness of the solid-state battery pole piece 14; the receiving assembly 3 comprises a receiving platform 34 and a moving module, the second tray 33 is placed on the receiving platform 34, and the moving module is used for driving the receiving platform 34 to reciprocate in the horizontal direction, so that the solid-state battery pole piece 14 is folded and accommodated in the second tray 33.

[0034] In some embodiments, the guide wheels 13 tighten the solid-state battery pole piece 14, so that the solid-state battery pole piece 14 has a certain tension, then a counterweight pressure roller 15 can be arranged on the guide wheels 13, and a certain pressure is applied to the solid-state battery pole piece 14 by the counterweight pressure roller 15, so as to ensure that the solid-state battery pole piece 14 is flat.

[0035] In some embodiments, Figure 1 The transmission belt moving module 31 and the screw moving module 32 are drawn in the figure at the same time, and in actual application, the transmission belt moving module 31 and the screw moving module 32 can be used alternatively.

[0036] In some embodiments, with reference to Figure 1 The moving module is the transmission belt moving module 31, which comprises a third transmission motor 35 (not shown in the transmission belt moving module 31) and a transmission belt 311; the receiving platform 34 is arranged on the transmission belt 311, the third transmission motor 35 is powerfully connected with the transmission belt 311, and the third transmission motor 35 is used for driving the transmission belt 311 to reciprocate.

[0037] In the embodiment, when the rollers 21 in the roller assembly 2 rotate, the solid-state battery pole piece 14 is rolled and thinned. The thinned solid-state battery pole piece 14 falls into the second tray 33 along with the continuous rotation of the rollers 21, the transmission belt 311 is driven by the third transmission motor 35 to reciprocate, so that the second tray 33 placed on the receiving platform 34 also reciprocates, and then the thinned solid-state battery pole piece 14 is accommodated in the second tray 33 in a “z” shape.

[0038] In some embodiments, referring to Figure 1 , the moving module is a lead screw moving module 32, comprising: a third transmission motor 35 and a lead screw 321; the material receiving platform 34 is connected with the lead screw 321 through a lead screw sliding block 322, the third transmission motor 35 is power connected with the lead screw 321, and the third transmission motor 35 is used to drive the lead screw 321 to rotate.

[0039] Similar to the conveyor belt moving module 31, when the third transmission motor 35 drives the lead screw 321 to rotate, the lead screw sliding block 322 can convert the rotation of the lead screw 321 into horizontal motion, and by changing the rotation direction of the lead screw 321, the reciprocating motion of the lead screw sliding block 322 in the horizontal direction can be realized, and the material receiving platform 34 and the second tray 33 are also reciprocated, so that the thinned solid-state battery electrode sheet 14 is contained in the second tray 33 in a "z" shape.

[0040] In some embodiments, the roller assembly 2 further comprises: a gap adjusting module 22, the gap adjusting module 22 comprises a connecting module and an adjusting module; one roller is fixedly connected with the connecting module, the connecting module is movably connected with the adjusting module, and the adjusting module is used to drive the connecting module to move in the horizontal direction, so that the roller fixedly connected with the connecting module is away from or close to the other roller.

[0041] Referring to Figure 2 and Figure 3 , the connecting module is arranged on the side away from the feeding assembly 1. For example, a horizontal lead screw can be arranged on the support surface on both sides of the roller, the roller on the side away from the feeding assembly 1 is connected with the lead screw through a bearing embedded in the lead screw sliding block, and then the lead screw sliding block is driven to move in the horizontal direction through the adjusting module, so as to adjust the gap between the two rollers 21. Adjusting the gap between the two rollers 21 can be used to adjust the thinning degree of the solid-state battery electrode sheet 14, and the smaller the gap is, the higher the thinning degree is.

[0042] Figure 4 The schematic diagram of the roller device provided by an embodiment of the present application.

[0043] In some embodiments, referring to Figure 4 , at least one scraper 25 parallel to the rolling surface of the roller is arranged on the roller, and the scraper 25 abuts against the rolling surface of the roller.

[0044] In some embodiments, the scraper 25 can be made of rubber, plastic or metal, and abuts against the rolling surface of the roller 21 to scrape off the electrode material of the solid-state battery electrode sheet 14 adhered to the rolling surface during rolling, recycle the electrode material, and ensure the rolling quality. At least one scraper 25 can be provided on each roller 21, and the scraper 25 can be detachably connected to the roller 21 to facilitate the technician to increase or decrease the number of scrapers 25 according to the actual situation.

[0045] Figure 5 A side view of the material conveying assembly provided for an embodiment of the present application.

[0046] In some embodiments, referring to Figure 1 and Figure 5 , the roller device further comprises a material conveying assembly 4 for moving the first tray 11 from the feeding platform 12 to the collecting platform 34, or moving the second tray 33 from the collecting platform 34 to the feeding platform 11.

[0047] As an example, the material conveying assembly 4 can be realized by a belt transmission mechanism, an electromagnetic transmission mechanism or a mechanical hand, etc. In the present application, a conveyor belt is taken as an example for illustration.

[0048] In some embodiments, referring to Figure 1 and Figure 5 , the material conveying assembly 4 comprises a first horizontal transmission assembly 41, a second horizontal transmission assembly 42 and a vertical transmission assembly 43; the first horizontal transmission assembly 41 and the second horizontal transmission assembly 42 are respectively fixedly connected to the vertical transmission assembly 43; the second horizontal transmission assembly 42 is arranged below the first horizontal transmission assembly 41, and the distance between the first horizontal transmission assembly 41 and the second horizontal transmission assembly 42 is greater than the thickness of the first tray 11 or the second tray 33; the vertical transmission assembly 43 is used to drive the first horizontal transmission assembly 41 and the second horizontal transmission assembly 42 to move in the vertical direction.

[0049] In some embodiments, the first horizontal transmission assembly 41 or the second horizontal transmission assembly 42 comprises a horizontal conveyor belt and a first transmission motor (not shown in the figure); the first transmission motor is power-connected to the horizontal conveyor belt.

[0050] In some embodiments, the vertical transmission assembly 43 comprises a first connecting piece 44, a second connecting piece 45, a vertically arranged slide rail (not shown in the figure) and a second transmission motor (not shown in the figure); one end of the first connecting piece 44 is connected to the first horizontal transmission assembly 41, and the other end is connected to the vertically arranged slide rail; one end of the second connecting piece 45 is connected to the second horizontal transmission assembly 42, and the other end is connected to the vertically arranged slide rail; the second transmission motor is power-connected to the vertically arranged slide rail, and is used to drive the first connecting piece 44 and the second connecting piece 45 to move in the vertical direction.

[0051] In some embodiments, the roll device further comprises a visual detection module 24 and a control module (not shown in the figure); the visual detection module 24 is arranged at the bottom of the roll assembly 2, opposite to the material receiving platform 34; the visual detection module 24 is electrically connected with the control module.

[0052] In some embodiments, the control module can also be electrically connected with the first transmission motor, the second transmission motor, the third transmission motor and the roll motor, so as to control the start-stop state, rotation direction or rotation speed of each motor.

[0053] Here, the working process of the roll device for solid-state battery electrode sheets is described in combination with the above embodiments, and the configuration parameters are only examples and not a limitation of the present application.

[0054] As an example, the solid-state battery electrode sheets 14 to be thinned can be stacked in a "Z" shape in the first tray 11, and the worker can place the first tray 11 on the feeding platform 12 and pass one end of the solid-state battery electrode sheets 14 through the guide wheel 13 and into the gap between the two rollers 21, then start the roll device, and the control module of the roll device controls the rotation of the two rollers 21 to roll the solid-state battery electrode sheets 14, and controls the third transmission motor to make the second tray 33 reciprocate with the material receiving platform 34, and the thinned solid-state battery electrode sheets 14 are stacked in a "Z" shape in the second tray 33. The control module can obtain the stacking progress and quality of the solid-state battery electrode sheets 14 in the second tray 33 based on the visual detection module 24, after the rolling is completed, the second transmission motor is controlled to align the first horizontal transmission assembly 41 with the material receiving platform 34, then the third transmission motor and the first transmission motor are controlled, and the material receiving platform 34 and the conveyor belt of the first transmission assembly 41 transmit the second tray 33 to the first horizontal transmission assembly 41. Then, the second transmission motor is controlled to align the second horizontal transmission assembly 42 with the feeding platform 12, and the feeding platform 12 can transmit the empty first tray 11 to the second horizontal transmission assembly 42 through a similar assembly as the material receiving platform 34. Then, the second transmission motor is controlled to align the first horizontal transmission assembly 41 with the feeding platform 12, and then the third transmission motor and the first transmission motor are controlled to transfer the second tray 33 to the feeding platform 12. Finally, the second transmission motor is controlled to align the second horizontal transmission assembly 42 with the material receiving platform 34, and then the third transmission motor and the first transmission motor are controlled to transfer the first tray 11 to the material receiving platform 34, and the next round of thinning and rolling operation can be performed.

[0055] The utility model discloses beneficial effect is: through feeding assembly, the solid battery pole piece in first tray is sent into the pair roller subassembly, and the solid battery pole piece is rolled through the pair roller subassembly to solid battery pole piece, and the solid battery pole piece after rolling is accommodated in the second tray through the material receiving subassembly. Moreover, can guarantee solid battery pole piece when sending into the pair roller subassembly and have certain tension through the guide roller, keep flat, and then make the solid battery pole piece after thinning does not exist fold, has better rolling effect. Material receiving subassembly can reciprocate in horizontal direction, can automatically receive the solid battery's pole piece after rolling, need not manual connection, and the operation is simple, has higher degree of automation.

[0056] It should be noted that in the present application, the content of the circuit, the controller and the like can be determined without doubt by those skilled in the art. Those skilled in the art can obtain specific embodiments without doubt according to the content of the present application.

[0057] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and the utility model can have various changes and changes for those skilled in the art. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A pair of rollers for a solid-state battery electrode sheet, characterized by, The device comprises a feeding assembly, a pair of roller assembly, a receiving assembly, a first tray and a second tray, the feeding assembly, the pair of roller assembly and the receiving assembly are arranged in sequence from top to bottom, the solid-state battery electrode sheet is in a strip shape and is folded and accommodated in the first tray; The feeding assembly comprises a feeding platform and at least one set of guide wheels, the feeding platform is deviated from the pair of roller assembly by a preset distance in the horizontal direction, the guide wheels are located at one end of the feeding platform close to the pair of roller assembly, the first tray is placed on the feeding platform, and one end of the solid-state battery electrode sheet passes through the guide wheels and enters the pair of roller assembly; The pair of roller assembly comprises at least one pair of rollers and a pair of roller motor corresponding to each roller, the two rollers are oppositely arranged, the rollers are respectively connected with the corresponding pair of roller motor in power, and a gap is left between the two rollers, the solid-state battery electrode sheet passes through the gap and falls into the first tray, and the gap distance is smaller than the thickness of the solid-state battery electrode sheet; The receiving assembly comprises a receiving platform and a moving module, the second tray is placed on the receiving platform, and the moving module is used for driving the receiving platform to reciprocate in the horizontal direction, so that the solid-state battery electrode sheet is folded and accommodated in the second tray. The pair of roller assembly further comprises a gap adjusting module, the gap adjusting module comprises a connecting module and an adjusting module; 2. The pair of rolls according to claim 1, characterized in that, One of the rollers is fixedly connected with the connecting module, the connecting module is movably connected with the adjusting module, and the adjusting module is used for driving the connecting module to move in the horizontal direction, so that the roller fixedly connected with the connecting module moves away from or approaches the other roller. At least one scraper parallel to the roller pressing surface of the roller is arranged on the roller, and the scraper abuts against the roller pressing surface.

3. The pair of rolls according to claim 1, characterized in that, The pair of roller equipment further comprises a material conveying assembly, the material conveying assembly is used for moving the first tray from the feeding platform to the receiving platform; or, 4. The pair of rolls according to claim 1, characterized in that, The second tray is moved from the receiving platform to the feeding platform. The material conveying assembly comprises:

5. The pair of rolls according to claim 4, characterized in that, A first horizontal transmission assembly, a second horizontal transmission assembly and a vertical transmission assembly; The first horizontal transmission assembly and the second horizontal transmission assembly are respectively fixedly connected with the vertical transmission assembly; The second horizontal transmission assembly is arranged below the first horizontal transmission assembly, and the distance between the first horizontal transmission assembly and the second horizontal transmission assembly is greater than the thickness of the first tray or the second tray; The vertical transmission assembly is used for driving the first horizontal transmission assembly and the second horizontal transmission assembly to move in the vertical direction. The first horizontal transmission assembly or the second horizontal transmission assembly comprises a horizontal conveying belt and a first conveying motor; 6. The pair of rolls according to claim 5, characterized in that, The first conveying motor is connected with the horizontal conveying belt in power. The vertical transmission assembly comprises a first connecting piece, a second connecting piece, a vertically arranged slide rail and a second conveying motor; 7. The pair of rolls according to claim 5, characterized in that, One end of the first connecting piece is connected with the first horizontal transmission assembly, and the other end is connected with the vertically arranged slide rail; One end of the second connecting piece is connected with the second horizontal transmission assembly, and the other end is connected with the vertically arranged slide rail; ​ The second conveying motor is power-connected with the vertically arranged slide rail, and is used to drive the first connecting member and the second connecting member to move in the vertical direction.

8. The pair of rolls according to claim 1, characterized in that, The moving module comprises a third transmission motor and a conveying belt. The material receiving platform is arranged on the conveying belt, the third transmission motor is power-connected with the conveying belt, and the third transmission motor is used to drive the conveying belt to reciprocate.

9. The pair of rolls as claimed in claim 1, wherein, The moving module comprises a third transmission motor and a screw rod. The material receiving platform is connected with the screw rod through a screw rod sliding block, the third transmission motor is power-connected with the screw rod, and the third transmission motor is used to drive the screw rod to rotate.

10. The pair of rolls as claimed in claim 1, wherein The roller pair equipment further comprises a visual detection module and a control module. The visual detection module is arranged at the bottom of the roller pair assembly and is arranged opposite to the material receiving platform. The visual detection module is electrically connected with the control module.

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