Continuous reciprocating lamination device and lamination method

Abstract

The application discloses a continuous reciprocating lamination device, comprising a lamination table, a strip material feeding mechanism for continuously feeding strip material in a strip shape and reciprocally folding the strip material on the lamination table, and a sheet material feeding mechanism for feeding sheet material in a sheet shape and sequentially stacking the sheet material on the strip material after each folding of the strip material. The application also discloses a continuous reciprocating lamination method. The continuous reciprocating lamination device and method can control the positions of the first end and the second end of the reciprocally folded strip material by controlling the distance range of the relative movement of the lamination roller group and the lamination table, control the length between the first end and the second end of the reciprocally folded strip material, and meet the lamination requirements of strip material and sheet material of different sizes, especially the lamination requirements of large-size strip material and sheet material, and are better in universality and higher in lamination efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of lamination, and in particular relates to a continuous reciprocating lamination device and a lamination method. Background Art

[0002] Chinese patent publication number CN202067866U discloses a semi-automatic lithium battery stacking machine, comprising a diaphragm roll, a stacking table, a left material box, a right material box, and a frame. The stacking table is mounted on a tabletop of the frame, and the left and right material boxes are symmetrically arranged with the stacking table as the center. The left and right material boxes are each filled with lithium battery pole pieces to be stacked. The lithium battery pole pieces to be processed are taken out of the left or right material box by a suction cup device and pressed onto the stacking table. The diaphragm roll is arranged above the frame, and the diaphragm wrapped on the diaphragm roll is clamped and pressed between two adjacent lithium battery pole pieces by transmission guide rollers. The two adjacent lithium battery pole pieces are taken from the left and right material boxes in turn. That is, the existing stacking machine uses a suction cup device to suck the lithium battery pole pieces from the left and right material boxes onto the stacking table in turn, and separates the lithium battery pole pieces by the diaphragm, thereby forming a battery structure.

[0003] Although the existing stacking machines can meet the requirements of battery production to a certain extent through stacking, they are only suitable for smaller battery electrodes. When the battery electrodes are large, due to the thin thickness of the battery electrodes, the suction cups can easily cause defects such as bending or even breaking of the battery electrodes when sucking up large-sized battery electrodes. At the same time, it is also difficult to achieve the positioning accuracy requirements required for stacking large-sized battery electrodes. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a continuous reciprocating lamination device and a lamination method, which can achieve continuous lamination and have better versatility and higher lamination efficiency.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention first proposes a continuous reciprocating lamination device, comprising:

[0007] Lamination table;

[0008] The strip material feeding mechanism is used to continuously convey the strip material in strip form and fold the strip material back and forth on the lamination table;

[0009] a sheet material feeding mechanism for conveying sheet materials in sheet form and stacking the sheet materials on the strip material in sequence after each folding of the strip material;

[0010] The strip feeding mechanism comprises:

[0011] The strip folding mechanism comprises a laminating roller set and a folding driving mechanism; the laminating roller set comprises two laminating rollers for guiding the strip; the folding driving mechanism is used to drive the relative movement between the laminating roller set and a laminating table and to fold the strip back and forth on the laminating table;

[0012] The folding positioning mechanism is used to control the positions of the two ends of the strip folded back and forth, and the laminating area is formed between the positions of the two ends of the strip folded back and forth;

[0013] The sheet feeding mechanism comprises:

[0014] The feeding belt, at least one end of which is provided with a feeding end;

[0015] The feeding driving mechanism is used to drive the feeding end to move back and forth between its starting position and end position; when only one end of the feeding belt is provided with a feeding end, the laminating table is provided with the sheet feeding mechanism at its opposite ends; when both ends of the feeding belt are provided with feeding ends, the starting positions of the two feeding ends are located at the opposite ends of the laminating area respectively; and: when the feeding end is located at its starting position, the feeding end is located outside the laminating area and close to one end of the laminating area; when the feeding end is located at its end position, the feeding end is located inside the laminating area and close to the other end of the laminating area;

[0016] The feeding control mechanism is used to make the sheet move synchronously with the feeding belt during the movement of the feeding end from its starting position to end position, and to make the sheet separate from the feeding belt during the movement of the feeding end from its end position to starting position;

[0017] The sheet positioning mechanism is used to position the sheet in the set laminating area.

[0018] Further, the feeding driving mechanism comprises a driving member corresponding to the feeding end one by one, the driving member is arranged below the corresponding feeding end, and the feeding end moves synchronously with the corresponding driving member.

[0019] Further, the feeding control mechanism comprises a control member corresponding to the driving member one by one and moving synchronously with the driving member, the control member is arranged above the corresponding feeding end.

[0020] Further, the control member is provided with a gap control mechanism for adjusting the gap between the control member and the driving member; and / or,

[0021] The control roller can only rotate in one direction and the speed of the point closest to the feeding belt during the rotation of the control roller points to the end position of the corresponding feeding end.

[0022] Furthermore, the sheet material feeding mechanism also includes a sheet material conveying mechanism for conveying the sheet material to the feeding end, and the sheet material conveying mechanism is arranged in a one-to-one correspondence with the feeding end; the sheet material conveying mechanism includes a front conveying roller and a rear conveying roller respectively located at the front and rear ends, and a conveyor belt is provided between the front conveying roller and the rear conveying roller; a receiving roller is provided on the feeding belt, and the receiving roller is arranged close to the front conveying roller.

[0023] Furthermore, the sheet feeding mechanism also includes a sheet slicing mechanism, which includes an unwinding roller for continuously unwinding the strip, a cutter mechanism for cutting the strip to form sheets, and a drive roller group for driving the strip to the cutter mechanism, and the cutter mechanism is located between the rear conveying roller and the drive roller group.

[0024] Furthermore, an encoder for measuring length is provided between the driving roller group and the unwinding roller; and a strip buffer area for buffering the strip is provided between the encoder and the unwinding roller.

[0025] Furthermore, the sheet positioning mechanism includes a sheet positioning member, and the sheet positioning member is arranged at an end position close to the feeding end.

[0026] Furthermore, it also includes a lamination table moving drive mechanism for driving the lamination table to move in a direction perpendicular to its table surface.

[0027] Furthermore, the strip feeding mechanism also includes a strip buffer mechanism, which includes a first fixed guide roller and a second fixed guide roller, and a movable roller and a tension mechanism for driving the movable roller to move to control the tension of the strip.

[0028] Furthermore, the folding drive mechanism includes a first moving drive mechanism for driving the lamination roller group and the lamination table to move relative to each other along a first direction parallel to the lamination table surface, and a second moving drive mechanism for driving the lamination roller group and the lamination table to move relative to each other along a second direction perpendicular to the lamination table surface.

[0029] Furthermore, the first moving drive mechanism drives the lamination roller group and / or the lamination platform to move along a first direction.

[0030] Furthermore, the second movement drive mechanism includes a roller group movement drive mechanism for driving the lamination roller group to move relative to the lamination platform along a second direction.

[0031] Furthermore, the strip folding mechanism includes a swing shaft, a swing arm that swings synchronously with the swing shaft, and a swing drive mechanism for driving the swing shaft to move;

[0032] The lamination roller group is arranged on the swing arm, and the swing drive mechanism drives the swing shaft to rotate back and forth within a set angle range, so that the lamination roller group moves back and forth relative to the lamination table to fold the strip back and forth on the lamination table;

[0033] While the swing arm is swinging, the lamination drive mechanism drives the swing shaft to move to adjust the distance between the lamination roller group and the lamination table and the laminated sheet material, so as to avoid interference between the lamination roller group and the lamination table and the laminated sheet material.

[0034] Furthermore, the swing shaft is provided with a secondary swing arm that swings synchronously therewith, and the secondary swing arm is provided with two secondary guide rollers for guiding the strip material.

[0035] Furthermore, the swing shaft is provided with an intermediate guide roller which is rotatably matched with the swing shaft and is used to guide the strip material.

[0036] Furthermore, the swing drive mechanism includes a rotation drive mechanism for driving the swing shaft to rotate within a set angle range and a movement drive mechanism for driving the swing shaft to move in a direction perpendicular to the lamination table surface.

[0037] Furthermore, the strip material is a diaphragm, and the sheet materials conveyed by the feeding ends located at both ends of the lamination platform are the first pole piece and the second pole piece respectively.

[0038] Furthermore, the strip material includes a first pole piece strip material, and the sheet material is a second pole piece;

[0039] Both sides of the first pole piece strip are respectively compounded with a diaphragm or a solid electrolyte layer; or, both sides of the second pole piece are respectively compounded with a diaphragm or a solid electrolyte layer; or, the first pole piece strip and one side of the second pole piece are respectively compounded with a diaphragm or a solid electrolyte layer.

[0040] Furthermore, the two sides of the first pole piece strip are respectively compounded with diaphragms to form the strip, and the strip feeding mechanism also includes a first pole piece strip unwinding roller for continuously unwinding the first pole piece strip and a diaphragm compounding mechanism for compounding diaphragms on both sides of the first pole piece strip, and the diaphragm compounding mechanism includes a diaphragm compounding roller.

[0041] Furthermore, a pole piece cutting mechanism for cutting the first pole piece strip is provided between the diaphragm composite roller and the first pole piece strip unwinding roller, and the length of the first pole piece sheet cut by the pole piece cutting mechanism is equal to the distance between the two end positions of the strip folded back and forth.

[0042] Furthermore, an encoder for measuring the cut length of the first pole piece sheet is provided between the pole piece cutting mechanism and the first pole piece strip unwinding roller.

[0043] Furthermore, a feeding roller group for driving the pole piece feeding is provided between the encoder and the pole piece cutting mechanism.

[0044] Furthermore, a first pole piece strip buffer area is provided between the encoder and the first pole piece strip unwinding roller.

[0045] Furthermore, a hot pressing composite mechanism is provided between the diaphragm composite roller and the strip folding mechanism.

[0046] Furthermore, the hot pressing and laminating mechanism includes a heating box for heating the strip material and a hot rolling and laminating roller group for hot rolling the strip material.

[0047] The present invention also proposes a continuous reciprocating lamination method, wherein the two ends of the strip material being folded back and forth are respectively a first end and a second end; the feed end at an initial position close to the first end is the first feed end, and the feed end at an initial position close to the second end is the second feed end; the method comprises the following steps:

[0048] 1) The lamination roller group is positioned at the end position of the first end of the strip material reciprocating folding, the first feed end reaches its initial position, the second feed end is positioned between its initial position and the end position and moves toward its end position, and the sheet material is loaded onto the first feed end;

[0049] 2) After the strip of material at the first end is pressed and fixed by the folding and positioning mechanism, the second feeding end is driven to continue moving and reach its end position, and the sheet material on the second feeding end is positioned and fixed by the sheet material positioning mechanism;

[0050] 3) Using the folding drive mechanism to drive the lamination roller group and the lamination table to move relative to each other, so that the lamination roller group moves from the first end to the second end, and at the same time drives the first feeding end to move from its initial position to the end position, and drives the second feeding end to move from its end position to the initial position, so that the sheet on the second feeding end gradually detaches from the second feeding end;

[0051] 4) When the lamination roller group reaches the end position of the second end, the second feeding end reaches its initial position, the first feeding end is located between its initial position and the end position and moves toward its end position, and the sheet material is fed to the second feeding end;

[0052] 5) After the strip at the second end is pressed and fixed by the folding and positioning mechanism, the first feeding end is driven to continue moving and reach its end position, and the sheet positioning mechanism is used to position and fix the sheet on the first feeding end;

[0053] 6) Using the folding drive mechanism to drive the lamination roller group and the lamination table to move relative to each other, so that the lamination roller group moves from the second end to the first end, and at the same time drives the second feeding end to move from its initial position to the end position, and drives the first feeding end to move from its end position to the initial position, so that the sheet on the first feeding end gradually detaches from the first feeding end;

[0054] 7) When the lamination roller group reaches the end position of the first end, the first feeding end reaches its initial position, the second feeding end is located between its initial position and the end position and moves toward its end position, and the sheet material is fed to the first feeding end;

[0055] 8) Repeat steps 2) to 7) until the lamination is completed.

[0056] Furthermore, in the steps 1) and 7), when the sheet is fed to the first feeding end, the end of the sheet is exposed outside the first feeding end; in the step 5), the end of the sheet exposed outside the first feeding end is positioned in the lamination area by a sheet positioning mechanism;

[0057] In the step 4), when the sheet material is loaded onto the second feeding end, the end of the sheet material is exposed outside the second feeding end; in the step 2), the end of the sheet material exposed outside the second feeding end is positioned in the lamination area by using the sheet material positioning mechanism.

[0058] Furthermore, in step 2), when the second feeding end reaches its end position, the feeding control mechanism drives the sheet to move so that the end of the sheet is exposed outside the second feeding end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the second feeding end in the lamination area;

[0059] In step 5), when the first feeding end reaches its end position, the feeding control mechanism is used to drive the sheet to move so that the end of the sheet is exposed outside the first feeding end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the first feeding end in the stacking area.

[0060] Furthermore, in the step 2), after the strip at the first end is pressed and fixed by the folding positioning mechanism, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby increasing the distance between the lamination roller group and the lamination table surface; and the lamination table and the feeding end are driven to move relative to each other along the second direction, thereby increasing the distance between the lamination table and the feeding end by the thickness of at least one lamination unit.

[0061] Furthermore, in step 4), after the lamination roller group moves relative to the lamination table to the end position of the second end of the strip material to be folded back and forth, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby reducing the distance between the lamination roller group and the lamination table surface, so that the strip material at the top layer is fitted with the sheet material below it, and then the strip material at the second end is pressed and fixed using the folding positioning mechanism.

[0062] Furthermore, in step 5), after the strip at the second end is pressed and fixed by the folding positioning mechanism, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby increasing the distance between the lamination roller group and the lamination table surface; the lamination table and the feeding end are driven to move relative to each other along the second direction, thereby increasing the distance between the lamination table and the feeding end by the thickness of at least one lamination unit.

[0063] Furthermore, in step 7), after the lamination roller group moves relative to the lamination table to the end position of the first end of the strip material to be folded back and forth, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby reducing the distance between the lamination roller group and the lamination table surface, so that the strip material at the top layer is fitted with the sheet material below it, and then the strip material at the first end is pressed and fixed using the folding positioning mechanism.

[0064] The beneficial effects of the present invention are:

[0065] The continuous reciprocating lamination device of the present invention continuously conveys the strip material by arranging a strip material feeding mechanism, and folds the strip material back and forth on the lamination table. During the process of folding the strip material back and forth, the sheet material feeding mechanism is used to stack the sheets on the strip material in sequence, thereby realizing the lamination between the folded strip material and the sheet-shaped sheet material. That is, the continuous reciprocating lamination device of the present invention can meet the lamination production requirements. In particular, by controlling the relative movement range of the lamination roller group and the lamination table, the positions of the first end and the second end of the strip material that is folded back and forth can be controlled, that is, the length between the first end and the second end of the strip material that is folded back and forth can be controlled to meet the lamination requirements of strip materials and sheet materials of different sizes. The device is particularly suitable for the lamination requirements of large-sized strip materials and sheet materials, and has better versatility and higher lamination efficiency.

[0066] The feeding drive mechanism is used to drive the feeding end to move from its starting position toward its end position. Under the action of the feeding control mechanism, the sheet material and the feeding end can move synchronously. After the feeding end reaches its end position, the feeding control mechanism is used to release the sheet material, so that the sheet material can be detached from the feeding belt during the movement of the feeding end toward its starting position, so that the sheet material finally falls into the stacking area, achieving the technical purpose of transporting the sheet material to the set stacking area; by adjusting the distance between the starting position and the end position of the feeding end, the requirements of stacking feeding of sheets of different sizes can be met; and the sheet feeding mechanism of the present invention utilizes a feeding belt to feed the sheet material. Compared with the existing suction cup method, it can not only meet the feeding requirements of various sizes, especially large-sized sheets, but also will not cause damage to the surface of the sheet material. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0068] Figure 1 This is a schematic structural diagram of a continuous reciprocating lamination device according to embodiment 1 of the present invention;

[0069] Figure 2 for Figure 1 Detail A of

[0070] Figure 3 for Figure 1 Detail B of

[0071] Figure 4 It is a structural diagram of the feeding ends at both ends of the feeding belt moving in association;

[0072] Figure 5 This is a structural diagram when the feeding ends at both ends of the feeding belt move independently;

[0073] Figure 6 A state diagram of the lamination roller group when it is at the first end and the second feeding end is moving toward its end position;

[0074] Figure 7 This is a state diagram when the first end strip is pressed and fixed and the second feeding end reaches its end position;

[0075] Figure 8 is a state diagram of the laminated roller group moving toward the second end;

[0076] Figure 9 A state diagram when the lamination roller group reaches the second end and the first feeding end moves toward its end position;

[0077] Figure 10 The state diagram when the second end strip is pressed and fixed and the first feeding end reaches its end position;

[0078] Figure 11 is a state diagram of the laminated roller group moving toward the first end;

[0079] Figure 12 A state diagram of the lamination roller group when it is at the first end and the second feeding end is moving toward its end position;

[0080] Figure 13 This is a schematic structural diagram of a second embodiment of a continuous reciprocating lamination device according to the present invention;

[0081] Figure 14 A state diagram of the lamination roller group when it is located at the first end and the second feeding end is moving toward its end position;

[0082] Figure 15 This is a state diagram when the first end strip is pressed and fixed and the second feeding end reaches its end position;

[0083] Figure 16 The state diagram of the lamination roller group when it moves toward the second end, specifically the state diagram when the swing arm is perpendicular to the lamination table;

[0084] Figure 17 A state diagram when the lamination roller group reaches the second end and the first feeding end moves toward its end position;

[0085] Figure 18 The state diagram when the second end strip is pressed and fixed and the first feeding end reaches its end position;

[0086] Figure 19 A diagram showing the state of the lamination roller group when it moves in the second direction to increase the distance between the lamination roller group and the lamination table;

[0087] Figure 20 The state diagram of the lamination roller group when it moves toward the first end, specifically the state diagram when the swing arm is perpendicular to the lamination table;

[0088] Figure 21 A state diagram of the lamination roller group when it is at the first end and the second feeding end is moving toward its end position;

[0089] Figure 22 This is a state diagram when the laminated roller group is located at the first end and the second feeding end reaches its end position.

[0090] Description of reference numerals:

[0091] 1-strip material; 2-sheet material; 3-strip material; 4-first pole piece strip material; 5-diaphragm;

[0092] 10-Lamination table; 11-Lamination roller; 12-Positioning block; 14-Guide roller; 15-First fixed guide roller; 16-Moving roller; 17-First pole piece strip unwinding roller; 18-Separator composite roller; 19-Separator unwinding roller; 20-Separator tension mechanism; 21-Pole piece cutting mechanism; 22-Encoder; 23-Feeding roller group; 24-First pole piece strip buffer area; 25-Heating box; 26-Hot roller composite roller group;

[0093] 30-swing shaft; 31-swing arm; 32-auxiliary swing arm; 33-auxiliary guide roller; 34-middle guide roller;

[0094] 50-feeding belt; 51-feeding end; 51a-first feeding end; 51b-second feeding end; 52-driving member; 53-tension mechanism; 54-control member; 55-guide plate; 56-front conveying roller; 57-rear conveying roller; 58-conveyor belt; 59-material receiving roller; 60-unwinding roller; 61-cutter mechanism; 62-driving roller group; 63-support platform; 64-encoder; 65-fixed roller; 66-tension movable roller; 67-sheet positioning member; 68-fixed roller; 69-moving roller. DETAILED DESCRIPTION

[0095] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0096] Example 1

[0097] like Figure 1 FIG2 is a schematic diagram of the structure of a continuous reciprocating lamination device according to an embodiment of the present invention. The continuous reciprocating lamination device according to this embodiment includes: a lamination platform 10; a strip material feeding mechanism for continuously conveying a strip material 1 and folding the strip material 1 back and forth on the lamination platform 10; and a sheet material feeding mechanism for conveying a sheet material 2 and stacking the sheet material 2 on the strip material 1 after each folding.

[0098] The strip feeding mechanism of this embodiment includes a strip folding mechanism and a folding positioning mechanism. The strip folding mechanism of this embodiment comprises a lamination roller assembly and a folding drive mechanism. The lamination roller assembly includes two lamination rollers 21 for guiding the strip 1. The folding drive mechanism is used to drive the lamination roller assembly relative to the lamination platform 10, causing the strip 1 to fold back and forth on the lamination platform 10. The folding positioning mechanism of this embodiment is used to control the positions of the two ends of the strip 1 during the reciprocating folding process, forming a lamination area between the two ends of the strip 1 during the reciprocating folding process.

[0099] The sheet feeding mechanism of this embodiment includes a feed belt 50, a feed drive mechanism, a feed control mechanism, and a sheet positioning mechanism. At least one end of the feed belt 50 of this embodiment is configured as a feed end 51. The feed drive mechanism of this embodiment is configured to drive the feed end 51 to move back and forth between its starting position and its end position.

[0100] Specifically, such as Figure 1 As shown, when the feed end 51 is provided only at one end of the feed belt 50, a sheet material feeding mechanism is provided at the opposite ends of the lamination platform 10, thereby meeting the technical purpose of laminating the sheet material 2 from both ends of the lamination area onto the folded belt material 1. Specifically, when the feed end 51 is in its starting position, the feed end 51 is located outside the lamination area and close to one end of the lamination area; when the feed end 51 is in its end position, the feed end 51 is located within the lamination area and close to the other end of the lamination area, thereby meeting the technical purpose of feeding the sheet material 2 from outside the lamination area to the lamination area. The feed control mechanism of this embodiment is used to synchronize the movement of the sheet material 2 and the feed belt 50 during the movement of the feed end 51 from its starting position to the end position, and to allow the sheet material 2 to detach from the feed belt 50 during the movement of the feed end 51 from its end position to the starting position. The sheet material positioning mechanism of this embodiment is used to position the sheet material 2 within a set lamination area.

[0101] like Figure 4 and 5 As shown, when both ends of the feeding belt 50 are set as feeding ends 51, the starting positions of the two feeding ends 51 are respectively located at the opposite ends of the lamination area, that is, at this time, only one sheet material feeding mechanism is set, which can also meet the technical purpose of laminating the sheet material 2 on the folded belt material 1 from both ends of the lamination area. There are two ways to set the feeding ends 51 at both ends of the lamination platform 10: the first way is as follows: Figure 4 As shown, there is a linkage relationship between the two feeding ends 51, that is, when one feeding end 51 is at its starting position, the other feeding end 51 is at its end position; when one feeding end 51 moves from its starting position to its end position, the other feeding end 51 moves from its end position to its starting position; when one feeding end 51 moves from its end position to its starting position, the other feeding end 51 moves from its starting position to its end position. Figure 5As shown, the feeding belt 50 is provided with a buffer zone, the buffer zone is provided with a fixed roller 68 and a movable roller 69, the tension of the feeding belt 50 is controlled by the movable roller 69, that is, the tension mechanism 53 is formed in the buffer zone at the same time; due to the existence of the buffer zone, when the length of the feeding belt 50 in the buffer zone is long enough, the feeding ends 51 at both ends of the feeding belt 50 can be controlled to move respectively, that is, there is no linkage between the feeding ends 51 respectively arranged at both ends of the feeding belt 50 at this time, that is, the feeding ends 51 respectively arranged at both ends of the feeding belt 50 can be controlled independently, and the control mode of each feeding end 51 is the same as that of the feeding end 51 arranged at one end of the feeding belt 50. Figure 1 It is equivalent to that only the feeding end 51 is arranged at one end of the feeding belt 50, and the repeated description is not given.

[0102] Further, the feeding driving mechanism comprises a driving member 52, the driving member 52 is arranged one by one corresponding to the feeding end 51, the driving member 52 is arranged below the corresponding feeding end 51, and the feeding end 51 moves synchronously with the corresponding driving member 52, the feeding end 51 of the embodiment is fixedly connected with the corresponding driving member 52, so that synchronous movement can be realized. Specifically, the feeding belt 50 is also provided with a tension mechanism 53, so that the feeding belt 50 can maintain sufficient tension in the process of moving of the feeding end 51 between the initial position and the terminal position.

[0103] Furthermore, the feed control mechanism includes a control member 54, which is provided in a one-to-one correspondence with the driver 52 and moves synchronously with the driver 52. The control member 54 is positioned above the corresponding feed end 51. The function of the control member 54 is to ensure that the sheet 2 moves synchronously with the feed belt 50 during the movement of the feed end 51 from its starting position to its end position, and to allow the sheet 2 to disengage from the feed belt 50 during the movement of the feed end 51 from its end position to its starting position. To achieve this technical purpose, the control member 54 can be implemented in a variety of ways. The first way is to provide a gap control mechanism on the control member 54, which is used to adjust the gap between the control member 54 and the driver 52. By adjusting the gap between the control member 54 and the driving member 52, when the feeding end 51 moves from its starting position to the end position, the gap between the control member 54 and the driving member 52 can be reduced, and appropriate pressure can be applied to the sheet 2 so that it moves synchronously with the feeding belt 50; when the feeding end 51 moves from its end position to the starting position, the gap between the control member 54 and the driving member 52 can be increased, that is, no pressure will be applied to the sheet 2, so that the sheet 2 can be detached from the feeding belt 50. The second method: the control member 54 adopts a control roller, which can only rotate in one direction and make the tangential velocity of the point closest to the feed belt 50 point to the end position of the corresponding feed end 51 during rotation; in this way, when the feed end 51 moves from its starting position to the end position, the control roller is subjected to the friction force applied by the sheet 2 toward the side of the starting position of the corresponding feed end 51. The torque applied to the control roller by this friction force is opposite to the direction in which the control roller can rotate, so the control roller will not rotate under the action of this friction force, that is, the sheet 2 will not slide on the feed belt 50, so that the sheet 2 and the feed belt 50 move synchronously; when the feed end 51 moves from its end position to the starting position, when the sheet 2 detaches from the feed belt 50, a friction force is applied to the control roller toward the side of the end position of the corresponding feed end 51. At this time, the torque applied to the control roller by the friction force is the same as the direction in which the control roller can rotate, so that the control roller rotates under the action of this friction force, so that the sheet 2 can detach from the feed belt 50. Of course, there are many ways to achieve the control roller rotating in only one direction, such as using a motor to control the direction of the control roller, or providing a ratchet on the control roller's rotating shaft, etc., which will not be repeated here. In some embodiments, when the control member 54 is a control roller, a gap control mechanism can also be provided on the control member 54. Of course, the gap control mechanism can be implemented using an electric cylinder, a screw mechanism, etc., which will not be repeated here.

[0104] Furthermore, in some embodiments, a guide plate 55 is provided below the feeding end 51 for guiding the sheet material 2 when the sheet material 2 is separated from the feeding belt 50. The guide plate 55 moves synchronously with the driving member 52. By providing the guide plate 55, the sheet material 2 can be prevented from being damaged by excessive bending during the process of separating from the feeding belt 50.

[0105] Furthermore, in some embodiments, the feed belt 50 is provided with a roller or a ball for rolling with the sheet material 2 , which can reduce the friction of the sheet material 2 during the process of detaching from the feed belt 50 and avoid damage to the surface of the sheet material 2 .

[0106] Furthermore, the sheet material feeding mechanism of this embodiment also includes a sheet material conveying mechanism for conveying the sheet material 2 to the feed end 51. The sheet material conveying mechanism is provided in a one-to-one correspondence with the feed end 51. Specifically, the sheet material conveying mechanism of this embodiment includes a front conveying roller 56 and a rear conveying roller 57 located at the front and rear ends, respectively, with a conveyor belt 58 disposed between the front conveying roller 56 and the rear conveying roller 57. The feed belt 21 is provided with a receiving roller 59, which is located near the front conveying roller 56. Of course, the sheet material conveying mechanism also includes a sheet material conveying motor (not shown) for driving the front conveying roller 56 or the rear conveying roller 57 to rotate, driving the conveyor belt 58 to move and convey the sheet material 2 to the feed end 51.

[0107] Furthermore, the sheet feeding mechanism of this embodiment also includes a sheet slicing mechanism, which includes an unwinding roller 60 for continuously unwinding a strip, a cutter mechanism 61 for cutting the strip to form a sheet, and a drive roller group 62 for driving the strip 3 to the cutter mechanism 61. The cutter mechanism 61 is located between the rear conveyor roller 57 and the drive roller group 62. By providing the sheet slicing mechanism, the continuous strip 3 can be cut into sheets 2. Preferably, a support platform 63 is provided between the cutter mechanism 61 and the rear conveyor roller 57 and between the cutter mechanism 61 and the drive roller group 62, respectively, to prevent the end of the strip 3 from tilting downward and being unable to smoothly enter the cutter mechanism 61 and the rear conveyor roller 57. Specifically, the strip 3 of this embodiment is the second pole piece.

[0108] Preferably, in some embodiments, an encoder 64 for measuring the length is provided between the driving roller set 62 and the unwinding roller 60 , thereby ensuring the dimensional accuracy of each sheet 2 .

[0109] Preferably, in some embodiments, a strip buffer area for caching the strip 3 is provided between the encoder 64 and the unwinding roller 60. The strip buffer area of ​​this embodiment includes a fixed roller 65 and a tensioning dynamic roller 66, so that the unwinding roller 60 can continuously unwind at a set speed without being affected by the intermittent feeding of the sheet 2.

[0110] Furthermore, the sheet positioning mechanism of this embodiment includes a sheet positioning member 67, which is arranged at a terminal position close to the corresponding feed end 51. The sheet positioning member 67 can be a sheet pressing rod, a sheet pressing needle, or a sheet pressing block. In this embodiment, the sheet positioning member 67 is a sheet pressing block. When the feed end 51 moves to its terminal position, the sheet pressing block is used to press and fix the end of the sheet 2 onto the folded belt 1 in the stacking area, thereby achieving the stacking position of the sheet 2. In the process of driving the feed end 51 to move toward its starting position, the sheet 2 is separated from the feed belt 50.

[0111] Furthermore, the folding and positioning mechanism includes positioning rods, positioning pins, or positioning blocks, respectively, located at the ends of the reciprocating folding of the strip 1. The folding and positioning mechanism of this embodiment includes positioning blocks 12, respectively, located at the ends of the reciprocating folding of the strip 1. Positioning blocks 12 are positioned to press against the folded ends of the strip 1, thereby enabling the strip 1 to be positioned and folded. Specifically, positioning blocks 12 press against the topmost layer of the strip 1. Of course, a stacking and positioning mechanism employing positioning rods and positioning pins can also achieve the same technical purpose, and this will not be repeated here.

[0112] Furthermore, the strip feeding mechanism also includes a guide roller group, which includes two guide rollers 14 for guiding the strip 1. By setting the two guide rollers 14 to guide the strip 1, the purpose of guiding the strip 1 can be achieved in the process of the laminated roller group driving the strip 1 to move back and forth. The strip feeding mechanism of this embodiment also includes a strip buffer mechanism, which includes a first fixed guide roller 15 and a second fixed guide roller. A movable roller 16 and a tension mechanism for driving the movable roller 16 to move to control the tension of the strip 1 are provided between the first fixed guide roller 15 and the second fixed guide roller. Specifically, the second fixed guide roller of this embodiment adopts the guide roller 14, that is, the two guide rollers 14 are used to play a guiding role in the back and forth folding process of the strip 1, and also serve as the second fixed guide roller of the strip buffer mechanism. Of course, the second fixed guide roller can also be provided separately, which will not be repeated. By providing a tension mechanism to drive the movable roller 16 to move, the tension of the strip 1 can be maintained stable. A certain length of the strip 1 can also be stored between the first fixed guide roller 15, the movable roller 16, and the guide roller group to meet the requirements of the strip 1 lamination while also serving as a buffer. Specifically, the tension mechanism can be implemented using various existing tension stabilization mechanisms, which will not be described in detail.

[0113] Furthermore, in this embodiment, the feed end 51 is provided at only one end of the feed belt 50. Therefore, two sheet material feeding mechanisms are provided and are respectively located at the two ends of the stacking table 10 perpendicular to the axis of the stacking roller 11. The two sheet material feeding mechanisms respectively stack the sheet material 2 on the uppermost belt material 1 in sequence.

[0114] Furthermore, the folding drive mechanism includes a first movable drive mechanism for driving relative movement between the lamination rollers and the lamination table 10 in a first direction parallel to the table surface of the lamination table 10, and a second movable drive mechanism for driving relative movement between the lamination rollers and the lamination table 10 in a second direction perpendicular to the table surface. The first direction described in this embodiment is perpendicular to the axis of the lamination rollers 11. Both the first movable drive mechanism and the second movable drive mechanism can be implemented using various existing methods, such as screw mechanisms, rack and pinion mechanisms, etc., which will not be further described.

[0115] Furthermore, the first movable drive mechanism drives the lamination roller group and / or the lamination platform to move along the first direction. That is, the first movable drive mechanism can drive the lamination roller group to move along the first direction, can also drive the lamination platform to move along the first direction, or can simultaneously drive the lamination roller group and the lamination platform to move along the first direction, as long as the lamination roller group can reciprocate between the first end and the second end of the folded strip 1 relative to the lamination platform 10.

[0116] Furthermore, the second movement drive mechanism includes a roller group movement drive mechanism and a lamination table movement drive mechanism for respectively driving the lamination roller group and the lamination table to move along a second direction. That is, the roller group movement drive mechanism can independently drive the lamination roller group to move along the second direction relative to the lamination table 10, thereby adjusting the spacing between the strip 1 and the topmost layer of the already folded strip 1 during the folding process, thereby avoiding interference between the lamination roller group and the topmost layer of the already folded strip 1. The lamination table movement drive mechanism can independently control the movement of the lamination table 10 along the second direction. Therefore, when the strip 1 and the sheet 2 are laminated, the lamination table 10 can be controlled to move to adjust the spacing between the lamination table 10 and the sheet feeding mechanism in a direction perpendicular to the table surface of the lamination table 10. The distance each step of the lamination table 10 is equal to the thickness of at least one lamination unit. The "thickness of a lamination unit" described herein refers to the total thickness of a layer of strip 1 and a layer of sheet 2 stacked together. Specifically, both the roller group movement drive mechanism and the laminating table movement drive mechanism can be implemented using various existing drive mechanisms, such as a screw mechanism and a rack and pinion mechanism, which will not be described in detail. Of course, in some embodiments, the second movement drive mechanism is used to drive the laminating roller group to move along the second direction, and a laminating drive mechanism can also be provided to drive the sheet feeding mechanism to move along the second direction. That is, the sheet feeding mechanism can be driven to move relative to the laminating table 10 to adjust the distance between the sheet feeding mechanism and the laminating table 10 to meet the laminating requirements of the sheet 2.

[0117] Specifically, in some embodiments, the strip material 1 is a separator, the sheet material 2 delivered by the feeding end 51 at both ends of the lamination table 10 is a first pole sheet and a second pole sheet respectively, and the first pole sheet and the second pole sheet are laminated on both sides of the separator respectively, thereby forming a battery or capacitor structure. In some other embodiments, the strip material 1 includes a first pole sheet strip, and the sheet material 2 is a second pole sheet; the first pole sheet strip is respectively compounded with a separator or a solid electrolyte layer on both sides; or, the second pole sheet is respectively compounded with a separator or a solid electrolyte layer on both sides; or, one side of the first pole sheet strip and one side of the second pole sheet are respectively compounded with a separator or a solid electrolyte layer. In this way, after the first pole sheet strip and the second pole sheet are laminated, the first pole sheet strip and the second pole sheet adjacent to each other have a separator or a solid electrolyte layer therebetween, and a battery or capacitor structure can also be formed. The strip material 1 of the present embodiment includes a first pole sheet strip 4, and the first pole sheet strip 4 is respectively compounded with a separator 5 on both sides. That is, the first pole sheet strip 4 is respectively compounded with a separator 5 on both sides to form a strip material 1, and the strip material feeding mechanism further includes a first pole sheet strip unwinding roller 17 for continuously unwinding the first pole sheet strip 4 and a separator compounding mechanism for respectively compounding the separator 5 on both sides of the first pole sheet strip 4, the separator compounding mechanism including a separator compounding roller 18 and a separator unwinding roller 19. In some embodiments, a separator tension mechanism 20 is provided between the separator compounding roller 18 and the separator unwinding roller 19.

[0118] Specifically, for some first pole sheet strips with excellent folding performance, the first pole sheet strip 4 can be directly folded back and forth on the lamination table 10 after being respectively compounded with a separator 5 on both sides. For some first pole sheet strips 4 with poor folding performance, especially those that will affect the product quality of the final formed battery or capacitor after folding, the first pole sheet strip 4 needs to be first cut into pieces, and then compounded with a separator 5 to form a strip material 1. At this time, a pole sheet cutting mechanism 21 for cutting the first pole sheet strip 4 is provided between the separator compounding roller 18 and the first pole sheet strip unwinding roller 17, and the length of the first pole sheet cut by the pole sheet cutting mechanism 21 is equal to the interval between the two end positions of the back-and-forth folding of the strip material 1. In this way, after the first pole sheet strip 4 is cut into pieces, the length of the back-and-forth folding of the strip material 1 is equal to the length of the first pole sheet, and at this time, the position of the back-and-forth folding of the strip material 1 can be controlled to be just between the two first pole sheet pieces, so that continuous folding is achieved by using the flexible and foldable separator 5, and the performance is not affected.

[0119] Preferably, in order to accurately control the slice length of the first electrode sheet, an encoder 22 for measuring the cut length of the first electrode strip 4 is provided between the electrode cutting mechanism 21 and the first electrode strip unwinding roller 17. In order to drive the first electrode strip 4 to feed continuously, a feed roller group 23 for driving the electrode feeding is provided between the encoder 22 and the electrode cutting mechanism 21. In order to enable the first electrode strip unwinding roller 17 to continuously unwind the first electrode strip 4 at a set speed, a first electrode strip buffer area 24 is provided between the encoder 22 and the first electrode strip unwinding roller 17. The first electrode strip buffer area 24 includes a fixed roller and a movable roller, etc., which will not be repeated.

[0120] Furthermore, a hot pressing laminating mechanism is provided between the diaphragm laminating roller 18 and the strip folding mechanism to improve the laminating performance between the diaphragm 5 and the first pole piece strip 4. The hot pressing laminating mechanism of this embodiment includes a heating box 25 for heating the strip 1 and a hot rolling laminating roller assembly 26 for hot rolling the strip 1.

[0121] The specific implementation of the continuous reciprocating lamination method is described in detail below in conjunction with the continuous reciprocating lamination device of this embodiment.

[0122] The continuous reciprocating lamination method of this embodiment comprises the following steps:

[0123] 1) The lamination roller group is located at the end position of the first end of the strip 1 folded back and forth, the first feeding end reaches its initial position, the second feeding end is located between its initial position and the end position and moves toward its end position, and the sheet material 2 is loaded on the first feeding end, as shown in FIG. Figure 6 shown.

[0124] 2) After the strip 1 at the first end is pressed and fixed by the folding positioning mechanism, the second feeding end is driven to continue to move and reach its end position, and the sheet material 2 on the second feeding end is positioned and fixed by the sheet material positioning mechanism; specifically, after the strip 1 at the first end is pressed and fixed by the folding positioning mechanism, the lamination roller group and the lamination table are driven to move relative to each other along the second direction for a set distance, thereby increasing the distance between the lamination roller group and the lamination table surface; the lamination table and the feeding end 51 are driven to move relative to each other along the second direction, thereby increasing the distance between the lamination table and the feeding end 51 by the thickness of at least one lamination unit, such as Figure 7 shown.

[0125] 3) The folding drive mechanism is used to drive the lamination roller group and the lamination table 10 to move relative to each other, so that the lamination roller group moves from the first end to the second end, and at the same time, the first feeding end is driven to move from its initial position to the end position, and the second feeding end is driven to move from its end position to the initial position, and the sheet 2 on the second feeding end gradually separates from the second feeding end. Figure 8 shown.

[0126] 4) When the lamination roller group reaches the end position of the second end, the second feed end reaches its initial position, and the first feed end is located between its initial position and the end position and moves toward its end position. At this time, the sheet material 2 on the second feed end is completely separated from it. After the sheet material is stacked on the strip material, the sheet material is pressed and fixed; the second feed end is re-loaded with a new sheet material 2. After the lamination roller group moves relative to the lamination table to the end position of the second end of the strip material folding back and forth, the lamination roller group and the lamination table are driven to move relative to each other in the second direction by a set distance, reducing the distance between the lamination roller group and the lamination table surface, so that the strip material at the top layer fits with the sheet material below it, and then the strip material at the second end is pressed and fixed using the folding positioning mechanism, as shown in FIG. Figure 9 shown.

[0127] 5) After the strip at the second end is pressed and fixed by the folding and positioning mechanism, the first feeding end is driven to continue moving and reach its end position, and the sheet 2 on the first feeding end is positioned and fixed by the sheet positioning mechanism. After the strip at the second end is pressed and fixed by the folding and positioning mechanism, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby increasing the distance between the lamination roller group and the lamination table surface; the lamination table and the feeding end 51 are driven to move relative to each other along the second direction, thereby increasing the distance between the lamination table and the feeding end 51 by the thickness of at least one lamination unit, such as Figure 10 shown.

[0128] 6) The folding drive mechanism is used to drive the lamination roller group and the lamination table 10 to move relative to each other, so that the lamination roller group moves from the second end to the first end, and at the same time drives the second feeding end to move from its initial position to the end position, and drives the first feeding end to move from its end position to the initial position, and the sheet on the first feeding end gradually separates from the first feeding end. Figure 11 shown.

[0129] 7) When the lamination roller group reaches the end position of the first end, the first feeding end reaches its initial position, and the second feeding end is located between its initial position and the end position and moves toward its end position. At this time, the sheet 2 on the first feeding end is completely separated from it. When the sheet is stacked on the belt material, the sheet is pressed and fixed; a new sheet 2 is re-loaded to the first feeding end, as shown in FIG. Figure 12When the lamination roller group moves relative to the lamination table to the end position of the first end of the strip material to be folded back and forth, the lamination roller group and the lamination table are driven to move relative to each other in the second direction by a set distance, reducing the distance between the lamination roller group and the lamination table surface, so that the strip material on the top layer is attached to the sheet material below it, and then the strip material at the first end is pressed and fixed by the folding and positioning mechanism.

[0130] 8) Repeat steps 2) to 7) until the lamination is completed.

[0131] Furthermore, in order to enable the sheet positioning mechanism to position the end of the sheet 2 in the lamination area, the following two methods can be used:

[0132] The first method: in steps 1) and 7), when the sheet is loaded onto the first feed end, the end of the sheet is exposed outside the first feed end; in step 5), the end of the sheet exposed outside the first feed end is positioned in the lamination area using a sheet positioning mechanism;

[0133] In step 4), when the sheet material is loaded onto the second feeding end, the end of the sheet material is exposed outside the second feeding end; in step 2), the end of the sheet material exposed outside the second feeding end is positioned in the lamination area using the sheet material positioning mechanism.

[0134] Second method: In step 2), when the second feed end reaches its end position, the feed control mechanism drives the sheet to move so that the end of the sheet is exposed outside the second feed end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the second feed end in the lamination area;

[0135] In step 5), when the first feeding end reaches its end position, the feeding control mechanism is used to drive the sheet to move so that the end of the sheet is exposed outside the first feeding end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the first feeding end in the stacking area.

[0136] That is, both methods can make the end of the sheet 2 exposed outside the first feeding end or the second feeding end, so that the exposed sheet end can be positioned in the stacking area using the sheet positioning mechanism, that is, the exposed sheet end can be pressed and positioned in the stacking area using the sheet positioning member 67.

[0137] Example 2

[0138] like Figure 13 FIG2 is a schematic diagram of the structure of a second embodiment of a continuous reciprocating lamination device according to the present invention. The continuous reciprocating lamination device of this embodiment comprises: a lamination platform 10; a strip material feeding mechanism for continuously conveying a strip material 1 and folding the strip material 1 back and forth on the lamination platform 10; and a sheet material feeding mechanism for conveying a sheet material 2 and stacking the sheet material 2 on the strip material 1 after each folding.

[0139] The strip feeding mechanism of the embodiment comprises a strip folding mechanism and a folding positioning mechanism. The strip folding mechanism of the embodiment comprises a laminating roller set and a folding driving mechanism; the laminating roller set comprises two laminating rollers 21 for guiding the strip 1; the folding driving mechanism is used to drive the relative movement between the laminating roller set and the laminating table 10 and to fold the strip 1 back and forth on the laminating table 10. The folding positioning mechanism of the embodiment is used to control the positions of the two ends of the strip 1 folded back and forth, and the laminating area is formed between the positions of the two ends of the strip 1 folded back and forth.

[0140] The sheet feeding mechanism of the embodiment comprises a feeding belt 50, a feeding driving mechanism, a feeding control mechanism and a sheet positioning mechanism. At least one end of the feeding belt 50 of the embodiment is provided with a feeding end 51. The feeding driving mechanism of the embodiment is used to drive the feeding end 51 to move back and forth between its starting position and end position.

[0141] The strip folding mechanism of the embodiment comprises a swing shaft 30, a swing arm 31 swinging synchronously with the swing shaft 30, and a swing driving mechanism for driving the swing shaft 30 to act. The laminating roller set is arranged on the swing arm 31, and the swing driving mechanism drives the swing shaft 30 to rotate back and forth within a set angle range, so as to move the laminating roller set back and forth relative to the laminating table 10 to fold the strip 1 back and forth on the laminating table 10. While the swing arm 31 swings, the laminating driving mechanism drives the swing shaft 30 to move so as to adjust the distance between the laminating roller set and the laminating table 10 and the sheet 2 whose laminating has been completed, and to avoid interference between the laminating roller set and the laminating table 10 and the sheet 2 whose laminating has been completed.

[0142] The swing shaft 30 of the embodiment is further provided with a secondary swing arm 32 swinging synchronously therewith, and the secondary swing arm 32 is provided with two secondary guide rollers 33 for guiding the strip 1, which can better guide the strip 1. Specifically, the included angle between the swing arm 31 and the secondary swing arm 32 of the embodiment is 180°, and the swing shaft 30 is provided with a middle guide roller 34 rotatingly matched therewith and used to guide the strip 1. Of course, in some embodiments, the included angle between the swing arm 31 and the secondary swing arm 32 can be less than 180°, and the technical purpose of guiding the strip 1 by the guide rollers 33 can also be achieved.

[0143] The swing drive mechanism of this embodiment includes a rotation drive mechanism for driving the swing shaft 30 to rotate within a set angle range and a movement drive mechanism for driving the swing shaft 30 to move in a direction perpendicular to the surface of the laminating table 10. The swing drive mechanism is used to drive the swing arm 31 to swing back and forth, thereby driving the laminating roller assembly to reciprocate between the first and second ends of the folding strip 1 to achieve reciprocating folding of the strip 1. The movement drive mechanism is used to drive the swing arm 31 to move in a direction perpendicular to the surface of the laminating table 10, thereby adjusting the distance between the swing shaft 31 and the surface of the laminating table 10, that is, adjusting the distance between the laminating roller assembly and the topmost layer of the strip 1, to avoid interference between the laminating roller assembly, the laminating table 10, and the topmost layer of the strip 1. Specifically, the swing drive mechanism can be implemented using various existing methods, such as a servo motor or a motor-driven connecting rod mechanism, which will not be repeated here. Similarly, the movement drive mechanism can also be implemented using various existing methods, such as a ball screw mechanism and a rack and pinion mechanism, which will not be repeated here.

[0144] The other implementations of this embodiment are the same as those of embodiment 1 and are not described again one by one.

[0145] The specific implementation of the continuous reciprocating lamination method is described in detail below in conjunction with the continuous reciprocating lamination device of this embodiment.

[0146] The continuous reciprocating lamination method of this embodiment comprises the following steps:

[0147] 1) The lamination roller group is located at the end position of the first end of the strip 1 folded back and forth, the first feeding end reaches its initial position, the second feeding end is located between its initial position and the end position and moves toward its end position, and the sheet material 2 is loaded on the first feeding end, as shown in FIG. Figure 14 shown.

[0148] 2) After the strip 1 at the first end is pressed and fixed by the folding positioning mechanism, the second feeding end is driven to continue to move and reach its end position, and the sheet 2 on the second feeding end is positioned and fixed by the sheet positioning mechanism; specifically, after the strip 1 at the first end is pressed and fixed by the folding positioning mechanism, the swing shaft 30 is driven to move along the second direction to increase the distance between the lamination roller group and the table surface of the lamination table 10. The lamination table 10 and the feeding end 51 are driven to move relative to each other in a direction perpendicular to the table surface of the lamination table, so that the distance between the lamination table 10 and the feeding end 51 is increased by the thickness of at least one lamination unit, such as Figure 15 shown.

[0149] 3) The folding drive mechanism is used to drive the relative movement between the lamination roller group and the lamination table 10, so that the lamination roller group moves from the first end to the second end, and at the same time drives the first feed end to move from its initial position to the end position, drives the second feed end to move from its end position to the initial position, and the sheet material 2 on the second feed end gradually separates from the second feed end. Specifically, in the process of the lamination roller group swinging toward the second end of the folded strip 1, the swing shaft 30 is first driven to move back to the lamination table 10 to increase the distance between the swing shaft 30 and the lamination table 10. When the swing arm 31 is perpendicular to the table surface of the lamination table 10, the distance between the swing shaft 30 and the lamination table 10 reaches the maximum, and then the swing shaft 30 is driven to move toward the lamination table 10 to reduce the distance between the swing shaft 30 and the lamination table 10, thereby controlling the distance of the lamination roller group relative to the lamination table 10 and the pole piece at the top layer, as shown in FIG. Figure 16 shown.

[0150] 4) When the lamination roller group reaches the end position of the second end, the second feeding end reaches its initial position, the first feeding end is located between its initial position and the end position and moves toward its end position, at this time the sheet 2 on the second feeding end is completely separated from it, and when the sheet is stacked on the belt material, the sheet is pressed and fixed; a new sheet 2 is re-loaded to the second feeding end, as shown in FIG. Figure 17 When the lamination roller group moves relative to the lamination table 10 to the end position of the second end of the strip material 1 to be folded back and forth, the swing shaft 30 is driven to continue to move toward the lamination table 10 by a set distance, reducing the distance between the lamination roller group and the lamination table 10, so that the strip material 1 at the top layer fits with the sheet material 2 below it, and then the strip material 1 at the second end is pressed and fixed by the folding positioning mechanism, as shown. Figure 18 shown.

[0151] 5) After the strip at the second end is pressed and fixed by the folding positioning mechanism, the first feeding end is driven to continue to move and reach its end position, and the sheet 2 on the first feeding end is positioned and fixed by the sheet positioning mechanism. After the strip at the second end is pressed and fixed by the folding positioning mechanism, the swing shaft 30 is driven to move a set distance away from the laminating table 10, thereby increasing the distance between the laminating roller group and the table surface of the laminating table 10. The laminating table 10 and the feeding end 51 are driven to move relative to each other in a direction perpendicular to the table surface of the laminating table, so that the distance between the laminating table 10 and the feeding end 51 is increased by the thickness of at least one laminating unit, so as to facilitate sheet lamination, such as Figure 19 shown.

[0152] 6) The folding drive mechanism is used to drive the relative movement between the lamination roller group and the lamination table 10, so that the lamination roller group moves from the second end to the first end, and at the same time drives the second feed end to move from its initial position to the end position, drives the first feed end to move from its end position to the initial position, and the sheet material on the first feed end gradually separates from the first feed end. Specifically, in the process of the lamination roller group swinging toward the first end of the belt folding back and forth, the swing shaft 30 is first driven to move back to the lamination table 10 to increase the distance between the swing shaft 30 and the lamination table 10. When the swing arm 31 is perpendicular to the table surface of the lamination table 10, the distance between the swing shaft 30 and the lamination table 10 reaches the maximum, and then the swing shaft 30 is driven to move toward the lamination table 10 to reduce the distance between the swing shaft 30 and the lamination table 10, thereby controlling the distance between the lamination roller group and the lamination table 10 and the topmost pole piece, avoiding interference while preventing the spacing from being too large, such as Figure 20 shown.

[0153] 7) When the lamination roller group reaches the end position of the first end, the first feeding end reaches its initial position, and the second feeding end is located between its initial position and the end position and moves toward its end position. At this time, the sheet 2 on the first feeding end is completely separated from it. When the sheet is stacked on the belt material, the sheet is pressed and fixed; a new sheet 2 is re-loaded to the first feeding end, as shown in FIG. Figure 21 When the lamination roller group moves relative to the lamination table 10 to the end position of the first end of the strip material 1 to be folded back and forth, the swing shaft 30 is driven to continue to move toward the lamination table 10 by a set distance, reducing the distance between the lamination roller group and the lamination table 10, so that the strip material 1 at the top layer fits with the sheet material 2 below it, and then the strip material 1 at the second end is pressed and fixed by the folding positioning mechanism, as shown. Figure 22 shown.

[0154] 8) Repeat steps 2) to 7) until the lamination is completed.

[0155] Furthermore, in order to enable the sheet positioning mechanism to position the end of the sheet 2 in the lamination area, the following two methods can be used:

[0156] The first method: in steps 1) and 7), when the sheet is loaded onto the first feed end, the end of the sheet is exposed outside the first feed end; in step 5), the end of the sheet exposed outside the first feed end is positioned in the lamination area using a sheet positioning mechanism;

[0157] In step 4), when the sheet material is loaded onto the second feeding end, the end of the sheet material is exposed outside the second feeding end; in step 2), the end of the sheet material exposed outside the second feeding end is positioned in the lamination area using the sheet material positioning mechanism.

[0158] Second method: In step 2), when the second feed end reaches its end position, the feed control mechanism drives the sheet to move so that the end of the sheet is exposed outside the second feed end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the second feed end in the lamination area;

[0159] In step 5), when the first feeding end reaches its end position, the feeding control mechanism is used to drive the sheet to move so that the end of the sheet is exposed outside the first feeding end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the first feeding end in the stacking area.

[0160] That is, both methods can make the end of the sheet 2 exposed outside the first feeding end or the second feeding end, so that the exposed sheet end can be positioned in the stacking area using the sheet positioning mechanism, that is, the exposed sheet end can be pressed and positioned in the stacking area using the sheet positioning member 67.

[0161] The above embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A continuous reciprocating lamination device, characterized in that: include: Lamination table; The strip feeding mechanism is used to continuously convey the strip material in strip form and fold the strip material back and forth on the lamination table; a sheet material feeding mechanism for conveying sheet materials in sheet form and stacking the sheet materials on the strip material in sequence after each folding of the strip material; The strip feeding mechanism comprises: A strip folding mechanism, comprising a lamination roller group and a folding drive mechanism; the lamination roller group comprises two lamination rollers for guiding the strip; the folding drive mechanism is used to drive the lamination roller group and the lamination table to move relative to each other and cause the strip to be folded back and forth on the lamination table; A folding positioning mechanism is used to control the positions of both ends of the strip material when it is folded back and forth, so that a lamination area is formed between the two ends of the strip material when it is folded back and forth; The sheet material feeding mechanism comprises: A feeding belt, wherein at least one end of the feeding belt is set as a feeding end; A feeding drive mechanism is used to drive the feeding end to move back and forth between its starting position and end position; when the feeding end is provided at only one end of the feeding belt, the sheet feeding mechanism is provided at opposite ends of the lamination platform; when both ends of the feeding belt are provided with feeding ends, the starting positions of the two feeding ends are located at opposite ends of the lamination area respectively; and: when the feeding end is located at its starting position, the feeding end is located outside the lamination area and close to one end of the lamination area; when the feeding end is located at its end position, the feeding end is located within the lamination area and close to the other end of the lamination area; a feeding control mechanism for causing the sheet to move synchronously with the feeding belt during the movement of the feeding end from its starting position to its end position, and for causing the sheet to detach from the feeding belt during the movement of the feeding end from its end position to its starting position; The sheet positioning mechanism is used to position the sheet in a set lamination area.

2. The continuous reciprocating lamination device according to claim 1, characterized in that: The feeding drive mechanism includes a driving member, which is arranged in a one-to-one correspondence with the feeding end. The driving member is arranged below the corresponding feeding end, and the feeding end moves synchronously with the corresponding driving member.

3. The continuous reciprocating lamination device according to claim 1, characterized in that: The feeding control mechanism includes a control member, which is arranged in a one-to-one correspondence with the driving member and moves synchronously with the driving member. The control member is arranged above the corresponding feeding end.

4. The continuous reciprocating lamination device according to claim 3, characterized in that: The control member is provided with a gap control mechanism, and the gap control mechanism is used to adjust the gap between the control member and the driving member; and / or, The control member can only rotate in one direction and the speed of the point closest to the feeding belt during rotation is directed to the corresponding end position of the feeding end.

5. The continuous reciprocating lamination device according to claim 1, characterized in that: The sheet material feeding mechanism also includes a sheet material conveying mechanism for conveying the sheet material to the feeding end, and the sheet material conveying mechanism is arranged in a one-to-one correspondence with the feeding end; the sheet material conveying mechanism includes a front conveying roller and a rear conveying roller respectively located at the front and rear ends, and a conveyor belt is provided between the front conveying roller and the rear conveying roller; a receiving roller is provided on the feeding belt, and the receiving roller is arranged close to the front conveying roller.

6. The continuous reciprocating lamination device according to claim 5, characterized in that: The sheet feeding mechanism also includes a sheet slicing mechanism, which includes an unwinding roller for continuously unwinding the strip, a cutter mechanism for cutting the strip to form sheets, and a drive roller group for driving the strip to the cutter mechanism, and the cutter mechanism is located between the rear conveying roller and the drive roller group.

7. The continuous reciprocating lamination device according to claim 6, characterized in that: An encoder for measuring length is provided between the driving roller group and the unwinding roller; and a strip buffer area for buffering strips is provided between the encoder and the unwinding roller.

8. The continuous reciprocating lamination device according to claim 1, characterized in that: The sheet positioning mechanism includes a sheet positioning member, and the sheet positioning member is arranged at an end position close to the feeding end.

9. The continuous reciprocating lamination device according to claim 1, characterized in that: It also includes a lamination table moving drive mechanism for driving the lamination table to move along a direction perpendicular to its table surface.

10. The continuous reciprocating lamination device according to claim 1, characterized in that: The strip feeding mechanism also includes a strip buffer mechanism, which includes a first fixed guide roller and a second fixed guide roller. A movable roller and a tension mechanism for driving the movable roller to move to control the tension of the strip are provided between the first fixed guide roller and the second fixed guide roller.

11. The continuous reciprocating lamination device according to claim 1, characterized in that: The folding drive mechanism includes a first moving drive mechanism for driving the lamination roller group and the lamination table to move relative to each other along a first direction parallel to the lamination table surface, and a second moving drive mechanism for driving the lamination roller group and the lamination table to move relative to each other along a second direction perpendicular to the lamination table surface.

12. The continuous reciprocating lamination device according to claim 11, characterized in that: The first moving drive mechanism drives the lamination roller group and / or the lamination platform to move along a first direction.

13. The continuous reciprocating lamination device according to claim 11, characterized in that: The second moving drive mechanism includes a roller group moving drive mechanism for driving the lamination roller group to move relative to the lamination platform along a second direction.

14. The continuous reciprocating lamination device according to claim 1, characterized in that: The strip folding mechanism includes a swing shaft, a swing arm that swings synchronously with the swing shaft, and a swing driving mechanism for driving the swing shaft to move; The lamination roller group is arranged on the swing arm, and the swing drive mechanism drives the swing shaft to rotate back and forth within a set angle range, so that the lamination roller group moves back and forth relative to the lamination table to fold the strip back and forth on the lamination table; While the swing arm is swinging, the lamination drive mechanism drives the swing shaft to move to adjust the distance between the lamination roller group and the lamination table and the laminated sheet material, so as to avoid interference between the lamination roller group and the lamination table and the laminated sheet material.

15. The continuous reciprocating lamination device according to claim 14, characterized in that: The swing shaft is also provided with a secondary swing arm that swings synchronously with the swing shaft, and the secondary swing arm is provided with two secondary guide rollers for guiding the strip material.

16. The continuous reciprocating lamination device according to claim 14, characterized in that: The swing shaft is provided with an intermediate guide roller which is rotatably matched with the swing shaft and is used for guiding the strip material.

17. The continuous reciprocating lamination device according to claim 14, characterized in that: The swing drive mechanism includes a rotation drive mechanism for driving the swing shaft to rotate within a set angle range and a movement drive mechanism for driving the swing shaft to move in a direction perpendicular to the lamination table surface.

18. The continuous reciprocating lamination device according to any one of claims 1 to 17, characterized in that: The strip material is a diaphragm, and the sheet materials conveyed by the feeding ends located at both ends of the lamination platform are respectively the first pole piece and the second pole piece.

19. The continuous reciprocating lamination device according to any one of claims 1 to 17, characterized in that: The strip material includes a first pole piece strip material, and the sheet material is a second pole piece; Both sides of the first pole piece strip are respectively compounded with a diaphragm or a solid electrolyte layer; or, both sides of the second pole piece are respectively compounded with a diaphragm or a solid electrolyte layer; or, the first pole piece strip and one side of the second pole piece are respectively compounded with a diaphragm or a solid electrolyte layer.

20. The continuous reciprocating lamination device according to claim 19, characterized in that: The two sides of the first pole piece strip are respectively compounded with diaphragms to form the strip. The strip feeding mechanism also includes a first pole piece strip unwinding roller for continuously unwinding the first pole piece strip and a diaphragm compounding mechanism for compounding diaphragms on both sides of the first pole piece strip. The diaphragm compounding mechanism includes a diaphragm compounding roller.

21. The continuous reciprocating lamination device according to claim 20, characterized in that: A pole piece cutting mechanism for cutting the first pole piece strip is provided between the diaphragm composite roller and the first pole piece strip unwinding roller. The length of the first pole piece sheet cut by the pole piece cutting mechanism is equal to the distance between the two end positions of the strip folded back and forth.

22. The continuous reciprocating lamination device according to claim 21, characterized in that: An encoder for measuring the cut length of the first pole piece is provided between the pole piece cutting mechanism and the first pole piece strip unwinding roller.

23. The continuous reciprocating lamination device according to claim 22, characterized in that: A feeding roller group for driving the pole piece feeding is provided between the encoder and the pole piece cutting mechanism.

24. The continuous reciprocating lamination device according to claim 22, characterized in that: A first pole piece strip buffer area is provided between the encoder and the first pole piece strip unwinding roller.

25. The continuous reciprocating lamination device according to claim 20, characterized in that: A hot pressing composite mechanism is provided between the diaphragm composite roller and the strip folding mechanism.

26. The continuous reciprocating lamination device according to claim 25, characterized in that: The hot pressing and laminating mechanism comprises a heating box for heating the strip material and a hot rolling and laminating roller group for hot rolling the strip material.

27. A continuous reciprocating lamination method, characterized in that: The two ends of the strip material that are folded back and forth are respectively the first end and the second end; the feeding end at the initial position close to the first end is the first feeding end, and the feeding end at the initial position close to the second end is the second feeding end; the steps include: 1) The lamination roller group is positioned at the end position of the first end of the strip material reciprocating folding, the first feed end reaches its initial position, the second feed end is positioned between its initial position and the end position and moves toward its end position, and the sheet material is loaded onto the first feed end; 2) After the strip of material at the first end is pressed and fixed by the folding and positioning mechanism, the second feeding end is driven to continue moving and reach its end position, and the sheet material on the second feeding end is positioned and fixed by the sheet material positioning mechanism; 3) Using the folding drive mechanism to drive the lamination roller group and the lamination table to move relative to each other, so that the lamination roller group moves from the first end to the second end, and at the same time drives the first feeding end to move from its initial position to the end position, and drives the second feeding end to move from its end position to the initial position, so that the sheet on the second feeding end gradually detaches from the second feeding end; 4) When the lamination roller group reaches the end position of the second end, the second feeding end reaches its initial position, the first feeding end is located between its initial position and the end position and moves toward its end position, and the sheet material is fed to the second feeding end; 5) After the strip at the second end is pressed and fixed by the folding and positioning mechanism, the first feeding end is driven to continue moving and reach its end position, and the sheet positioning mechanism is used to position and fix the sheet on the first feeding end; 6) Using the folding drive mechanism to drive the lamination roller group and the lamination table to move relative to each other, so that the lamination roller group moves from the second end to the first end, and at the same time drives the second feeding end to move from its initial position to the end position, and drives the first feeding end to move from its end position to the initial position, so that the sheet on the first feeding end gradually detaches from the first feeding end; 7) When the lamination roller group reaches the end position of the first end, the first feeding end reaches its initial position, the second feeding end is located between its initial position and the end position and moves toward its end position, and the sheet material is fed to the first feeding end; 8) Repeat steps 2) to 7) until the lamination is completed.

28. The continuous reciprocating lamination method according to claim 27, characterized in that: In the steps 1) and 7), when the sheet material is fed to the first feeding end, the end of the sheet material is exposed outside the first feeding end; in the step 5), the end of the sheet material exposed outside the first feeding end is positioned in the lamination area by using the sheet material positioning mechanism; In the step 4), when the sheet material is loaded onto the second feeding end, the end of the sheet material is exposed outside the second feeding end; in the step 2), the end of the sheet material exposed outside the second feeding end is positioned in the lamination area by using the sheet material positioning mechanism.

29. The continuous reciprocating lamination method according to claim 27, characterized in that: In step 2), when the second feeding end reaches its end position, the feeding control mechanism drives the sheet to move so that the end of the sheet is exposed outside the second feeding end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the second feeding end in the lamination area; In step 5), when the first feeding end reaches its end position, the feeding control mechanism is used to drive the sheet to move so that the end of the sheet is exposed outside the first feeding end, and then the sheet positioning mechanism is used to position the end of the sheet exposed outside the first feeding end in the stacking area.

30. The continuous reciprocating lamination method according to claim 27, characterized in that: In step 2), after the strip at the first end is pressed and fixed by the folding and positioning mechanism, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby increasing the distance between the lamination roller group and the lamination table surface; The lamination platform and the feeding end are driven to move relative to each other along the second direction, so that the distance between the lamination platform and the feeding end is increased by the thickness of at least one lamination unit.

31. The continuous reciprocating lamination method according to claim 27, characterized in that: In the step 4), after the lamination roller group moves relative to the lamination table to the end position of the second end of the strip material to be folded back and forth, the lamination roller group and the lamination table are driven to move relative to each other along the second direction for a set distance, thereby reducing the distance between the lamination roller group and the lamination table surface, so that the strip material at the top layer is fitted with the sheet material below it, and then the strip material at the second end is pressed and fixed using the folding positioning mechanism.

32. The continuous reciprocating lamination method according to claim 27, characterized in that: In step 5), after the strip at the second end is pressed and fixed by the folding and positioning mechanism, the lamination roller group and the lamination table are driven to move relative to each other along the second direction by a set distance, thereby increasing the distance between the lamination roller group and the lamination table surface; The lamination platform and the feeding end are driven to move relative to each other along the second direction, so that the distance between the lamination platform and the feeding end is increased by the thickness of at least one lamination unit.

33. The continuous reciprocating lamination method according to claim 27, characterized in that: In the step 7), after the lamination roller group moves relative to the lamination table to the end position of the first end of the strip material to be folded back and forth, the lamination roller group and the lamination table are driven to move relative to each other along the second direction for a set distance, thereby reducing the distance between the lamination roller group and the lamination table surface, so that the strip material at the top layer is fitted with the sheet material below it, and then the strip material at the first end is pressed and fixed using the folding positioning mechanism.

Images