Double-roller machine for battery pole piece

Abstract

The invention provides a double-roller machine for a battery pole piece. The double-roller machine comprises a rack, a first roller, a second roller and a roller gap adjusting device, when the distance between the rollers needs to be adjusted, the first adjusting screw rod is rotated to axially move in the first support screw hole, and the first sliding block is driven to horizontally move. The first sliding block is embedded into the longitudinal sliding groove of the first wedge-shaped block to push the first wedge-shaped block to transversely move along the top plate. Due to the fact that the second face of the first wedge-shaped block is an inclined face and makes contact with the first movable bearing seat, horizontal movement is converted into acting force in the vertical direction, the first movable bearing seat is driven to vertically slide along the first support, and therefore the position of the first roller is changed. And the second adjusting screw rod controls the position of the second movable bearing seat through the same principle. And the gap between the two rollers can be adjusted by rotating the adjusting screw rod, so that the battery pole pieces with various thickness requirements can be rolled. The first roller is parallel to the second roller in the moving process, and uneven thickness of the pole piece is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of battery electrode processing equipment, and particularly to a battery electrode rolling mill. Background Technology

[0002] Roll presses, also known as rolling mills or sheet presses, are widely used in industries such as chemical and electronics. They use the pressure generated by the opposing movement of upper and lower rollers to extrude raw materials to meet the required process requirements. They also have advantages such as adjustability, high hardness, high precision, automation, and ease of operation.

[0003] Currently, the rolling mills used in the manufacturing process of battery electrodes mainly consist of a pair of vertically arranged rolls. This equipment synchronously drives these two rolls to rotate via a drive system, thereby applying pressure to the battery panel material and substrate held between the rolls to roll the battery electrode. However, since the distance between the upper and lower rolls of this rolling mill is a fixed value, it cannot effectively adapt to the rolling tasks of battery electrodes with varying thickness requirements. Therefore, specific rolling mills must be used to meet the production needs of different specifications, which to some extent limits the versatility of the equipment. Therefore, technological improvements to existing rolling mills are particularly urgent. Summary of the Invention

[0004] Therefore, it is necessary to provide a rolling mill for battery electrodes to address the aforementioned technical problems.

[0005] A rolling mill for battery electrode sheets includes: a frame, a first roll, a second roll, and a roll gap adjustment device; The frame is provided with a roll support assembly, which includes a first movable bearing seat, a second movable bearing seat, a first fixed bearing seat, and a second fixed bearing seat arranged opposite to each other. The first end of the first roll is connected to the first movable bearing seat, the second end of the first roll is connected to the second movable bearing seat, the first end of the second roll is connected to the first fixed bearing seat, and the second end of the second roll is connected to the second fixed bearing seat. The first roll and the second roll are parallel to each other and spaced apart. The roll gap adjustment device includes: a first adjusting screw, a second adjusting screw, a first sliding block, and a second sliding block. A first support and a second support are provided on the frame. A first movable bearing seat is slidably mounted on the first support in a vertical direction, and a second movable bearing seat is slidably mounted on the second support in a vertical direction. A first screw hole is provided on the first support, and a second screw hole is provided on the second support. The first adjusting screw passes through the first screw hole and is screwed to the side wall of the first screw hole. One end of the first adjusting screw is connected to the first sliding block. The second adjusting screw passes through the second screw hole and is screwed to the side wall of the second screw hole. One end of the second adjusting screw is connected to the second sliding block. The first and second supports are fixedly equipped with a top plate. A first wedge block is provided between the top plate and the first movable bearing seat. The first surface of the first wedge block slides against the top plate, and the second surface of the first wedge block slides against the side of the first movable bearing seat away from the first fixed bearing seat. The second surface of the first wedge block is inclined to the horizontal plane. A second wedge block is provided between the top plate and the second movable bearing seat. The first surface of the second wedge block slides against the top plate, and the second surface of the second wedge block slides against the side of the second movable bearing seat away from the second fixed bearing seat. The second surface of the second wedge block is inclined to the horizontal plane.

[0006] In one embodiment, the second face of the first wedge block is inclined gradually toward the direction of the first fixed bearing seat from one end to the other. The second face of the second wedge block is inclined gradually toward the direction of the second fixed bearing seat from one end to the other.

[0007] In one embodiment, the roll gap adjusting device further includes a first spring and a second spring, one end of the first spring being connected to the first movable bearing seat and the other end of the first spring being connected to the first fixed bearing seat, one end of the second spring being connected to the second movable bearing connecting seat and the other end of the second spring being connected to the second fixed bearing seat.

[0008] In one embodiment, the first movable bearing housing includes a first movable bearing housing body and a first bearing rotatably disposed on the first movable bearing housing, one end of the first spring abuts against the first movable bearing housing body, the other end of the first spring abuts against the first fixed bearing housing, and the first end of the first roller passes through the first bearing and is connected to the first bearing. The second movable bearing housing includes a second movable bearing housing body and a bearing rotatably mounted on the second movable bearing housing. One end of the second spring abuts against the second movable bearing housing body, and the other end of the second spring abuts against the second fixed bearing housing. The second end of the first roller passes through the second bearing of the second movable bearing housing and is connected to the second bearing.

[0009] In one embodiment, the roll gap adjustment device further includes a first roll gap distance detector and a second roll gap distance detector, wherein the first roll gap distance detector is disposed on one end of the top plate near the first movable bearing seat, and the second roll gap distance detector is disposed on one end of the top plate near the second movable bearing seat.

[0010] In one embodiment, a transmission assembly is further included, the transmission assembly comprising: a drive motor, a first driving gear, a first driven gear, and a second driven gear; The output shaft of the drive motor is connected to the first driving gear, the second end of the second roll is connected to the first driven gear, the second end of the first roll is connected to the second driven gear, the first driving gear meshes with the first driven gear, and the first driven gear meshes with the second driven gear.

[0011] In one embodiment, the first wedge block has a longitudinally extending first sliding groove on the side facing the first adjusting screw. The first slider is adapted to be embedded in the first sliding groove and forms a longitudinal sliding engagement with the first sliding groove. When the first adjusting screw rotates on the first bracket to adjust the depth, the first slider moves the first wedge block horizontally in sync with the first adjusting screw in the horizontal direction. The second wedge block has a longitudinally extending second sliding groove on the side facing the second adjusting screw. The second slider is adapted to be embedded in the second sliding groove and forms a longitudinal sliding fit with the second sliding groove. When the second adjusting screw rotates on the second bracket to adjust the depth, the second slider moves the second wedge block horizontally in sync with the second adjusting screw in the horizontal direction.

[0012] In one embodiment, an inlet guide plate is also included. The inlet guide plate is located on the feed side and is fixedly connected to the frame. The center of the inlet guide plate coincides with the center of the roll gap, and the upper surface of the inlet guide plate is tangent to the highest point of the second roll.

[0013] In one embodiment, an outlet guide plate is also included, which is located on the discharge side and is fixedly connected to the frame. The center of the outlet guide plate coincides with the center of the roll gap, and the upper surface of the outlet guide plate is tangent to the highest point of the second roll.

[0014] In one embodiment, the roll gap adjustment device further includes a first adjustment handwheel and a second adjustment handwheel, wherein the first adjustment handwheel is connected to the other end of the first adjustment screw, and the second adjustment handwheel is connected to the other end of the second adjustment screw.

[0015] In the aforementioned battery electrode rolling mill, rotating the first adjusting screw causes it to move axially within the screw hole of the first support, thereby driving the first slider to move horizontally. The first slider is embedded in the longitudinal groove of the first wedge block, pushing the first wedge block to move laterally along the top plate. Since the second surface of the first wedge block is an inclined surface and contacts the first movable bearing seat, the horizontal movement is converted into a vertical force, driving the first movable bearing seat to slide vertically along the first support, thus changing the position of the first roll. The second adjusting screw controls the position of the second movable bearing seat through the same principle. By rotating the adjusting screw, the gap between the two rolls can be adjusted to achieve the rolling of battery electrodes with various thickness requirements. The two ends of the first roll are controlled by independent adjusting screws, which can finely adjust the displacement at both ends to ensure that the first roll always remains parallel to the second roll during movement, avoiding uneven electrode thickness caused by inconsistent roll gaps at both ends. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a roller mill for battery electrodes in one embodiment; Figure 2 This is a schematic diagram of the internal structure of the roller mill for the battery electrode sheets in one embodiment; Figure 3 This is a schematic diagram of the internal structure of the roller mill for the battery electrode sheets in one embodiment, taken from another direction. Figure 4 This is a schematic diagram of the structure of the first adjusting screw, second adjusting screw, first slider, second slider, first wedge block, second wedge block, first sliding groove, and second sliding groove of the roller mill for the battery electrode sheet in one embodiment; Figure 5 This is a schematic diagram of the internal structure of the battery electrode roller mill in another direction in one embodiment.

[0017] In the attached diagram, 10 is a double-roll mill; 100 is a frame; 200 is a first roll; 300 is a second roll; 510 is a first movable bearing seat; 520 is a second movable bearing seat; 530 is a first fixed bearing seat; 540 is a second fixed bearing seat; 410 is a first adjusting screw; 420 is a second adjusting screw; 430 is a first slider; 440 is a second slider; 110 is a first support; 120 is a second support; 600 is a top plate; 700 is a first wedge block; 800 is a second wedge block; 511 is the second roll. A movable bearing housing body; 512, first bearing; 521, second movable bearing housing body; 522, second bearing; 470, first roll gap distance detector; 480, second roll gap distance detector; 910, drive motor; 920, first drive gear; 930, first driven gear; 940, second driven gear; 710, first sliding groove; 810, second sliding groove; 1100, inlet guide plate; 1200, outlet guide plate; 491, first adjusting handwheel; 492, second adjusting handwheel. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] In one embodiment, such as Figures 1 to 4 As shown, a rolling mill 10 for battery electrode sheets is provided, including: a frame 100, a first roll 200, a second roll 300, and a roll gap adjustment device; The frame 100 is provided with a roll support assembly, which includes a first movable bearing seat 510, a second movable bearing seat 520, a first fixed bearing seat 530, and a second fixed bearing seat 540 arranged opposite to each other. The first end of the first roll 200 is connected to the first movable bearing seat 510, and the second end of the first roll 200 is connected to the second movable bearing seat 520. The first end of the second roll 300 is connected to the first fixed bearing seat 530, and the second end of the second roll 300 is connected to the second fixed bearing seat 540. The first roll 200 and the second roll 300 are parallel to each other and spaced apart. The roll gap adjustment device includes: a first adjusting screw 410, a second adjusting screw 420, a first slider 430, and a second slider 440. A first support 110 and a second support 120 are provided on the frame 100. A first movable bearing seat 510 is slidably mounted on the first support 110 in a vertical direction, and a second movable bearing seat 520 is slidably mounted on the second support 120 in a vertical direction. A first screw hole is provided on the first support 110, and a second screw hole is provided on the second support 120. The first adjusting screw 410 passes through the first screw hole and is screwed to the side wall of the first screw hole. One end of the first adjusting screw 410 is connected to the first slider 430. The second adjusting screw 420 passes through the second screw hole and is screwed to the side wall of the second screw hole. One end of the second adjusting screw 420 is connected to the second slider 440. A top plate 600 is fixedly mounted on the first support 110 and the second support 120. A first wedge block 700 is disposed between the top plate 600 and the first movable bearing seat 510. The first surface of the first wedge block 700 slides against the top plate 600, and the second surface of the first wedge block 700 slides against the side of the first movable bearing seat 510 away from the first fixed bearing seat 530. The second surface of the first wedge block 700 is inclined to the horizontal plane. A second wedge block 800 is disposed between the top plate 600 and the second movable bearing seat 520. The first surface of the second wedge block 800 slides against the top plate 600, and the second surface of the second wedge block 800 slides against the side of the second movable bearing seat 520 away from the second fixed bearing seat 540. The second surface of the second wedge block 800 is inclined to the horizontal plane.

[0020] In this embodiment, as Figure 2As shown, the first roll 200 is a movable roll, and the second roll 300 is a fixed roll. A roll support assembly is provided on the frame 100. The roll support assembly includes a first movable bearing seat 510, a second movable bearing seat 520, a first fixed bearing seat 530, and a second fixed bearing seat 540. These components form the support structure for the first roll 200 and the second roll 300. The roll gap adjustment device includes a first adjusting screw 410, a second adjusting screw 420, a first slider 430, and a second slider 440, which cooperate with a first wedge block 700 and a second wedge block 800 mounted on the first support 110 and the second support 120, respectively. The first movable bearing seat 510 is slidably mounted on the first support 110 in the vertical direction, and the second movable bearing seat 520 is slidably mounted on the second support 120. A first wedge block 700 with an inclined contact surface is provided between the top plate 600 and the first movable bearing seat 510, and a second wedge block 800 with an inclined contact surface is provided between the top plate 600 and the second movable bearing seat 520. With the above structure, when the first adjusting screw 410 and the second adjusting screw 420 are rotated respectively, the screw drives the slider to move horizontally, thereby driving the wedge block to move horizontally as well. The first surface of the wedge block slides against the top plate. When the wedge block slides horizontally, the reaction force of the top plate on the wedge block causes the second surface of the wedge block to exert force on the movable bearing seat. Since the second surface of the wedge block is inclined, the force of the wedge block on the movable bearing seat generates a component force in the vertical direction, causing the movable bearing seat to move in the vertical direction, thereby driving the first roll to move closer to or further away from the second roll, thereby realizing the adjustment of the roll gap.

[0021] Among them, such as Figure 3As shown, the roll support assembly refers to the bearing housing combination structure that supports the roll. It can adopt a split type with movable bearing housing and fixed bearing housing. The first movable bearing housing 510 and the second movable bearing housing 520 are connected to the first support 110 and the second support 120 respectively through sliding guide rails, while the first fixed bearing housing 530 and the second fixed bearing housing 540 are directly fixed to the frame 100. It should be understood that the roll gap adjustment device can adopt a screw-slider-wedge block structure. The first adjusting screw 410 is threaded to the first support 110, and the second adjusting screw 420 is threaded to the second support 120. The first slider 430 is connected to the end of the first adjusting screw 410 and forms a sliding engagement with the first wedge block 700. Similarly, the second slider 440 is connected to the end of the second adjusting screw 420 and forms a sliding engagement with the second wedge block 800. When the adjusting screw rotates in the screw hole, it will produce horizontal lateral movement, allowing the adjusting screw to be screwed in or out, thereby driving the slider to move horizontally. It is worth mentioning that both the first wedge block 700 and the second wedge block 800 refer to transmission components with inclined working surfaces, such as trapezoidal metal blocks. Their first surfaces slide against the top plate 600 fixed on the first bracket 110 and the second bracket 120, restricting the vertical movement of the first wedge block 700 and the second wedge block 800 and allowing only horizontal movement. Their second surfaces are inclined planes on the horizontal plane, sliding against the sides of the first movable bearing seat 510 and the second movable bearing seat 520. When the adjusting screw drives the slider to push the wedge block to move horizontally, the inclined plane presses against the movable bearing seat, pushing it to slide vertically downward along the bracket.

[0022] Specifically, when the roll spacing needs to be adjusted, the first adjusting screw 410 is rotated to move axially within the screw hole of the first bracket 110, causing the first slider 430 to move horizontally. The first slider 430 is embedded in the longitudinal groove of the first wedge block 700, pushing the first wedge block 700 to move laterally along the top plate 600. Since the second surface of the first wedge block 700 is an inclined surface and contacts the first movable bearing seat 510, the horizontal movement is converted into a vertical force, driving the first movable bearing seat 510 to slide vertically along the first bracket 110, thereby changing the position of the first roll 200. The second adjusting screw 420 controls the position of the second movable bearing seat 520 through the same principle. The dual-screw independent adjustment mechanism can finely adjust the height of both ends of the first roll 200, ensuring that the roll axis always remains parallel. The top plate 600 serves as the sliding reference surface for the first wedge block 700 and the second wedge block 800, restricting the first wedge block 700 and the second wedge block 800 to only move horizontally. The above structure allows for the adjustment of the gap between the two rollers, enabling the rolling of battery electrode sheets with various thickness requirements. Both ends of the first roller 200 are controlled by independent adjusting screws, allowing for individual fine-tuning of the displacement at each end. This ensures that the first roller 200 remains parallel to the second roller 300 during movement, preventing uneven electrode sheet thickness due to inconsistent roller gaps.

[0023] In one embodiment, such as Figure 2 As shown, the second surface of the first wedge block 700 is inclined towards the first fixed bearing seat 530 along the direction from one end to the other; the second surface of the second wedge block 800 is inclined towards the second fixed bearing seat 540 along the direction from one end to the other.

[0024] In this embodiment, the second surface of the first wedge block 700 is an inclined surface. This inclined surface gradually slopes towards the first fixed bearing seat 530 along the direction from one end to the other. Specifically, the slope direction is set along the direction in which the first adjusting screw 410 is screwed out. The second surface of the first wedge block 700 gradually slopes towards the first fixed bearing seat 530. That is, when the first adjusting screw 410 is screwed in, the first slider 430 drives the first wedge block 700 to move horizontally away from the screw hole. At this time, the first wedge block 700 gradually squeezes the first movable bearing seat 510, pushing it to slide vertically downward along the bracket and closer to the second roller 300, thereby reducing the roller gap. When the first adjusting screw 410 is screwed out, the first slider 430 drives the first wedge block 700 to move horizontally towards the screw hole. The squeezing force of the inclined surface is released, and the first movable bearing seat 510 slides vertically upward under the action of the restoring force, thereby increasing the roller gap. The inclined direction of the second wedge block 800 is completely symmetrical with that of the first wedge block 700, ensuring that the first roll 200 is subjected to balanced force and moves synchronously at both ends.

[0025] In order to maintain a stable relative position between the movable bearing seat and the fixed bearing seat during the adjustment of the roll gap, and to avoid roll offset or vibration caused by the adjustment action, in another embodiment, the roll gap adjustment device further includes a first spring and a second spring. One end of the first spring is connected to the first movable bearing seat, and the other end of the first spring is connected to the first fixed bearing seat. One end of the second spring is connected to the second movable bearing seat, and the other end of the second spring is connected to the second fixed bearing seat.

[0026] In this embodiment, the first spring refers to the elastic element connecting the first movable bearing seat and the first fixed bearing seat, and the second spring refers to the elastic element connecting the second movable bearing seat and the second fixed bearing seat. Both the first and second springs can be helical compression springs or disc springs, with their ends fixed to the sidewalls of the bearing seats by bolts or clips. Thus, when the adjusting screw is screwed in, the slider drives the wedge block to move horizontally away from the screw hole. At this time, the wedge block gradually squeezes the movable bearing seat, pushing it to slide vertically downwards along the support, approaching the second roll, thereby narrowing the roll gap. The spring in the fixed bearing housing is compressed, generating elastic force. At this time, the direction of the spring force is opposite to the downward direction of the movable bearing housing. That is, the vertical downward component of the force generated by the wedge block is greater than the elastic force of the spring, causing the movable bearing housing to slide vertically downward along the bracket. When the adjusting screw is turned out, the slider drives the wedge block to move horizontally along the direction closer to the screw hole. At this time, the vertical downward component of the force generated by the wedge block gradually decreases until the vertical downward component of the force is less than the elastic force of the spring. When the vertical downward component of the force is less than the elastic force of the first spring, the spring pushes the movable bearing housing to slide vertically upward, causing the movable bearing housing to reset and realizing the expansion of the roll gap.

[0027] In one embodiment, such as Figure 2 and Figure 3 As shown, the first movable bearing housing includes a first movable bearing housing body and a first bearing rotatably disposed on the first movable bearing housing. One end of the first spring abuts against the first movable bearing housing body, and the other end of the first spring abuts against the first fixed bearing housing. The first end of the first roller passes through the first bearing and is connected to the first bearing. The second movable bearing housing includes a second movable bearing housing body and a bearing rotatably mounted on the second movable bearing housing. One end of the second spring abuts against the second movable bearing housing body, and the other end of the second spring abuts against the second fixed bearing housing. The second end of the first roller passes through the second bearing of the second movable bearing housing and is connected to the second bearing. A first wedge block is provided between the top plate and the first movable bearing seat body. The first surface of the first wedge block slides against the top plate, and the second surface of the first wedge block slides against the side of the first movable bearing seat body away from the first fixed bearing seat. The second surface of the first wedge block is inclined to the horizontal plane. A second wedge block is provided between the top plate and the second movable bearing seat body. The first surface of the second wedge block slides against the top plate, and the second surface of the second wedge block slides against the side of the second movable bearing seat body away from the second fixed bearing seat. The second surface of the second wedge block is inclined to the horizontal plane.

[0028] In this embodiment, the first movable bearing housing body 511 and the second movable bearing housing body 521 refer to sliding support structures that support the ends of the rolls. Their bottoms are equipped with guide rails that slide in cooperation with the frame 100, allowing them to move vertically during adjustment. The first bearing 512 refers to a rolling bearing installed within the first movable bearing housing body 511. Its outer ring is connected to the first movable bearing housing body 511, and its inner ring is connected to the first bearing 512, allowing the inner ring of the bearing to move as the roll rotates.

[0029] To achieve synchronous and high-precision monitoring of the distance between the two ends of the rolls, and to solve the problem of uneven battery electrode thickness caused by asymmetrical adjustment, in another embodiment, such as... Figure 2 As shown, the roll gap adjustment device further includes a first roll gap distance detector 470 and a second roll gap distance detector 480. The first roll gap distance detector 470 is disposed on one end of the top plate 600 near the first movable bearing seat 510, and the second roll gap distance detector 480 is disposed on one end of the top plate 600 near the second movable bearing seat 520.

[0030] In this embodiment, the first roll gap distance detector 470 is fixed in the area adjacent to the top plate 600 and the first movable bearing seat 510. When the first adjusting screw 410 drives the first wedge block 700 to move horizontally, the first movable bearing seat 510 generates a longitudinal displacement under the action of the inclined surface of the first wedge block 700, so that the first roll gap distance detector 470 can detect the actual movement distance of the bearing seat. The second roll gap distance detector 480 detects the displacement of the second movable bearing seat 520 using the same principle. The operator can determine whether the roll gap is symmetrical based on the difference in values ​​fed back by the detectors at both ends, and eliminate the displacement deviation at both ends by adjusting the feed amount of the first adjusting screw 410 or the second adjusting screw 420. For example, when the first roll gap distance detector 470 shows that the displacement of the first movable bearing seat 510 is greater than that of the second end, the distance between the two ends of the roll can be restored to parallel by reducing the feed of the first adjusting screw 410 or increasing the feed of the second adjusting screw 420. The first roll gap distance detector 470 and the second roll gap distance detector 480 can use various types of detectors available on the market, such as laser rangefinders or ultrasonic sensors.

[0031] In one embodiment, such as Figure 3 As shown, it also includes a transmission assembly, which includes: a drive motor 910, a first driving gear 920, a first driven gear 930, and a second driven gear 940; The output shaft of the drive motor 910 is connected to the first driving gear 920, the second end of the second roller 300 is connected to the first driven gear 930, the second end of the first roller 200 is connected to the second driven gear 940, the first driving gear 920 meshes with the first driven gear 930, and the first driven gear 930 meshes with the second driven gear 940.

[0032] In this embodiment, after the drive motor 910 starts, it drives the first driving gear 920 to rotate. The first driving gear 920 transmits power to the second roll 300 through meshing with the first driven gear 930. At the same time, the first driven gear 930 meshes with the second driven gear 940 to drive the first roll 200 to rotate in the opposite direction. The transmission assembly is integrally arranged at the second end of the roll, forming an axially offset layout with the second movable bearing seat 520. The three-stage gear transmission structure enables the two rolls to form a fixed speed ratio relationship. The equal number of teeth of the first driven gear 930 and the second driven gear 940 ensures that the linear speeds of the two rolls are consistent.

[0033] In one embodiment, please combine Figure 1 and Figure 4As shown, the first wedge block 700 has a first sliding groove 710 extending longitudinally on the side facing the first adjusting screw 410. The first slider 430 is adapted to be embedded in the first sliding groove 710 and forms a longitudinal sliding engagement with the first sliding groove 710. When the first adjusting screw 410 rotates on the first bracket 110 to adjust the depth, the first slider 430 drives the first wedge block 700 to move horizontally in sync with the first adjusting screw 410 in the horizontal direction. The second wedge block 800 has a longitudinally extending second sliding groove 810 on the side facing the second adjusting screw 420. The second slider 440 is adapted to be embedded in the second sliding groove 810 and forms a longitudinal sliding engagement with the second sliding groove 810. When the second adjusting screw 420 rotates on the second bracket 120 to adjust the depth, the second slider 440 drives the second wedge block 800 to move horizontally in sync with the second adjusting screw 420 in the horizontal direction.

[0034] In this embodiment, the longitudinally extending first sliding groove 710 is a straight channel extending along the height direction of the first wedge block 700, and the second sliding groove 810 is a straight channel extending along the height direction of the second wedge block 800. The longitudinally extending straight channels allow the first slider 430 and the second slider 440 to slide only longitudinally within the channels. It is worth noting that the top plate 600 also restricts the movement of the first slider 430 and the second slider 440 to only within the channels. Specifically, when the first adjusting screw 410 and the second adjusting screw 420 are rotated, the first slider 430 and the second slider 440, fixed to the ends of the screws, generate a linear displacement in the horizontal direction. Since the slider is embedded in the longitudinal sliding groove of the wedge block, the lateral thrust of the slider is transmitted to the wedge block through the sidewall of the sliding groove, causing the first wedge block 700 and the second wedge block 800 to move synchronously in the horizontal direction. Simultaneously, the longitudinal sliding groove and the top plate 600 ensure that the wedge block always maintains a predetermined movement trajectory, preventing tilting or jamming due to uneven force.

[0035] To ensure the battery electrode sheets enter the roller gap precisely in the horizontal direction, and to prevent one side of the electrode sheet from contacting the roller first due to feed deviation, thus preventing uneven force on the rollers or wrinkles at the electrode sheet edges, in some embodiments, such as Figure 5 As shown, it also includes an inlet guide plate 1100, which is located on the feed side and is fixedly connected to the frame 100. The center of the plate surface of the inlet guide plate 1100 coincides with the center of the roll gap, and the upper surface of the inlet guide plate 1100 is tangent to the highest point of the second roll 300.

[0036] In this embodiment, the inlet guide plate 1100 is fixed to the feed side of the frame 100 and can be rigidly connected to the frame 100 by bolt fastening. The center of the plate surface and the center of the roll gap coincide, which means that the central axis of the guide plate and the center line of the gap between the two rolls are in the same vertical plane. The inlet guide plate 1100 can be made of polished stainless steel plate. When the battery electrode material is conveyed along the inlet guide plate 1100, the fixedly connected guide plate can prevent vibration from causing positional deviation when the battery electrode enters the roller mill 10, resulting in uneven force or wrinkles on the edge of the electrode.

[0037] To ensure the battery electrode sheets enter the roller gap precisely in the horizontal direction, and to prevent one side of the electrode sheet from contacting the roller first due to feed deviation, thus preventing uneven force on the rollers or wrinkles at the electrode sheet edges, in some embodiments, such as Figure 1 As shown, it also includes an outlet guide plate 1200, which is located on the discharge side. The outlet guide plate 1200 is fixedly connected to the frame 100. The center of the plate surface of the outlet guide plate 1200 coincides with the center of the roll gap, and the upper surface of the outlet guide plate 1200 is tangent to the highest point of the second roll 300.

[0038] In this embodiment, the outlet guide plate 1200 is fixed to the discharge side of the frame 100 and can be connected to the frame 100 by bolt fastening or welding. The center of the plate surface coincides with the center of the roll gap, which means that the central axis of the guide plate and the center line of the gap between the two rolls are in the same vertical plane. The outlet guide plate 1200 can be made of polished stainless steel plate, so that the electrode sheet maintains its original movement trajectory after leaving the contact of the rolls, avoiding edge curling or surface scratches caused by free fall, and realizing the smooth output of the rolled electrode sheet.

[0039] In one embodiment, such as Figure 4 As shown, the roll gap adjustment device further includes a first adjustment handwheel 491 and a second adjustment handwheel 492. The first adjustment handwheel 491 is connected to the other end of the first adjustment screw 410, and the second adjustment handwheel 492 is connected to the other end of the second adjustment screw 420.

[0040] Specifically, the first adjusting handwheel 491 is connected to the end of the first adjusting screw 410 near the first screw hole, and the second adjusting handwheel 492 is connected to the end of the second adjusting screw 420 near the second screw hole.

[0041] In this embodiment, the operator can manually rotate the first adjusting handwheel 491 to drive the first adjusting screw 410 to rotate and generate axial movement, thereby precisely controlling the position of the first wedge block 700. Similarly, the position of the second wedge block 800 can be independently controlled by rotating the second adjusting handwheel 492. This allows operators to quickly and accurately adjust the roll gap on-site without the need for any tools, greatly improving the operability and maintenance efficiency of the equipment.

[0042] In some other embodiments, the base has multiple support legs at its bottom, and the bottom of each support leg is provided with an anti-slip and shock-absorbing pad. The support legs provide stable and wobbly support for the entire device, while the anti-slip and shock-absorbing pad increases the surface friction between the support legs and the ground, preventing the device from moving during operation. It also absorbs some vibrations and reduces operating noise. The anti-slip and shock-absorbing pad is made of rubber, silicone, or elastic plastic.

[0043] In one embodiment, a transmission protective cover is further included. This cover is fixedly mounted on the frame and completely encloses the drive motor, the first driving gear, the first driven gear, and the second driven gear. In this embodiment, the transmission protective cover ensures that operators cannot directly contact the high-speed rotating moving parts, avoiding the risk of mechanical injury such as entanglement or abrasion. Simultaneously, the transmission protective cover effectively prevents the intrusion of dust, oil, and foreign objects, protecting the precision transmission system and extending the equipment's service life.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery pole piece pair-roller machine characterized by, The utility model relates to a rolling mill, and particularly relates to a rolling mill with a roller gap adjusting device. The rolling mill comprises a rack, a first roller, a second roller and a roller gap adjusting device. The rack is provided with a roller support assembly, the roller support assembly comprises first moving bearing seats, second moving bearing seats, first fixed bearing seats and second fixed bearing seats arranged oppositely in pairs, the first end of the first roller is connected with the first moving bearing seat, the second end of the first roller is connected with the second moving bearing seat, the first end of the second roller is connected with the first fixed bearing seat, the second end of the second roller is connected with the second fixed bearing seat, and the first roller and the second roller are arranged in parallel and spaced apart. The roller gap adjusting device comprises first adjusting screws, second adjusting screws, first sliding blocks and second sliding blocks, the rack is provided with first supports and second supports, the first moving bearing seat is arranged in a sliding mode in the vertical direction on the first support, the second moving bearing seat is arranged in a sliding mode in the vertical direction on the second support, the first support is provided with first screw holes, the second support is provided with second screw holes, the first adjusting screw is arranged in the first screw hole and is screwed with the side wall of the first screw hole, one end of the first adjusting screw is connected with the first sliding block, the second adjusting screw is arranged in the second screw hole and is screwed with the side wall of the second screw hole, one end of the second adjusting screw is connected with the second sliding block, the first support and the second support are fixedly provided with top plates, the first wedge-shaped block is arranged between the top plate and the first moving bearing seat, the first face of the first wedge-shaped block is in sliding abutment with the top plate, the second face of the first wedge-shaped block is in sliding abutment with the face of the first moving bearing seat away from the first fixed bearing seat, and the second face of the first wedge-shaped block is arranged to be inclined to the horizontal plane; the second wedge-shaped block is arranged between the top plate and the second moving bearing seat, the first face of the second wedge-shaped block is in sliding abutment with the top plate, the second face of the second wedge-shaped block is in sliding abutment with the face of the second moving bearing seat away from the second fixed bearing seat, and the second face of the second wedge-shaped block is arranged to be inclined to the horizontal plane.

2. The pair of rolls according to claim 1, characterized in that, The second face of the first wedge-shaped block is inclined to the direction gradually close to the first fixed bearing seat along the direction from one end to the other end; The second face of the second wedge-shaped block is inclined to the direction gradually close to the second fixed bearing seat along the direction from one end to the other end.

3. The pair of rolls according to claim 1, characterized in that, The roller gap adjusting device further comprises first springs and second springs, one end of the first spring is connected with the first moving bearing seat, the other end of the first spring is connected with the first fixed bearing seat, one end of the second spring is connected with the second moving bearing seat, and the other end of the second spring is connected with the second fixed bearing seat.

4. The pair of rolls according to claim 3, characterized in that, The first moving bearing seat comprises a first moving bearing seat body and a first bearing arranged in a rotating mode on the first moving bearing seat, one end of the first spring is in abutment with the first moving bearing seat body, the other end of the first spring is in abutment with the first fixed bearing seat, the first end of the first roller is arranged in the first bearing and is connected with the first bearing; The second movable bearing seat comprises a second movable bearing seat body and a second bearing rotatably arranged on the second movable bearing seat, one end of the second spring abuts against the second movable bearing seat body, the other end of the second spring abuts against the second fixed bearing seat, and the second end of the first roller passes through the second bearing of the second movable bearing seat and is connected with the second bearing.

5. The pair of rolls according to claim 1, characterized in that, The roll gap adjusting device further comprises a first roll gap distance detector and a second roll gap distance detector, the first roll gap distance detector is arranged on one end of the top plate close to the first movable bearing seat, and the second roll gap distance detector is arranged on one end of the top plate close to the second movable bearing seat.

6. The pair of rolls according to claim 1, characterized in that, The transmission assembly comprises a driving motor, a first driving gear, a first driven gear and a second driven gear. The output shaft of the driving motor is connected with the first driving gear, the second end of the second roller is connected with the first driven gear, the second end of the first roller is connected with the second driven gear, the first driving gear is engaged with the first driven gear, and the first driven gear is engaged with the second driven gear.

7. The pair of rolls according to claim 1, characterized in that, The first wedge-shaped block is provided with a first sliding groove extending in the longitudinal direction on one side of the first adjusting screw, the first sliding block is embedded in the first sliding groove, and the first sliding block is in longitudinal sliding fit with the first sliding groove. The second wedge-shaped block is provided with a second sliding groove extending in the longitudinal direction on one side of the second adjusting screw, the second sliding block is embedded in the second sliding groove, and the second sliding block is in longitudinal sliding fit with the second sliding groove.

8. The pair of rolls according to claim 1, characterized in that, The inlet guide plate is located on the feeding side, the inlet guide plate is fixedly connected with the rack, the center of the plate surface of the inlet guide plate coincides with the center of the roll gap, and the upper surface of the inlet guide plate is tangent to the highest point of the second roller.

9. The pair of rolls according to claim 1, characterized in that, The outlet guide plate is located on the discharging side, the outlet guide plate is fixedly connected with the rack, the center of the plate surface of the outlet guide plate coincides with the center of the roll gap, and the upper surface of the outlet guide plate is tangent to the highest point of the second roller.

10. The pair of rolls according to claim 1, characterized in that, The roll gap adjusting device further comprises a first adjusting hand wheel and a second adjusting hand wheel, the first adjusting hand wheel is connected with the other end of the first adjusting screw, and the second adjusting hand wheel is connected with the other end of the second adjusting screw.

Images