Membrane stacking device, lamination stacking device and battery production line

Abstract

The invention provides a membrane stacking device, a lamination device and a battery production line wherein the membrane stacking device comprises: a feeding mechanism for providing a diaphragm; the cutting mechanism is arranged at the downstream position of the feeding mechanism, and the cutting mechanism is used for cutting the diaphragm; the caching mechanism is arranged at the downstream of the cutting mechanism, and the caching mechanism comprises a first grabbing roller structure and a first driving structure; the film laying mechanism is arranged on the downstream portion of the temporary storage mechanism and comprises a first rack, a second roller grabbing structure, a second driving structure and a third driving structure, and the transferring mechanism is used for transferring the winding roller on the first roller grabbing structure to the second roller grabbing structure or transferring the winding roller on the second roller grabbing structure to the first roller grabbing structure. According to the structure, the diaphragm can be laid in two directions only by arranging the feeding mechanism on the side part of the lamination table, so that the occupied space of the diaphragm stacking device in the horizontal direction is reduced, the additional vertical space is not occupied, and the overall size of the diaphragm stacking device is relatively small.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production equipment, and in particular to a film stacking device, a sheet stacking device and a battery production line. Background Art

[0002] Lamination is an important process in battery production. In the lamination process, the positive electrode sheet, the diaphragm and the negative electrode sheet are stacked back and forth to form a battery cell. During lamination, the unrolled diaphragm needs to be laid on the lamination table. In the lamination process in the prior art, the diaphragm is usually laid in the following two ways. One is to set an unwinding mechanism on both sides of the side of the lamination table, and the diaphragm clamps clamp the diaphragm at the two unwinding mechanisms respectively, and realize the reciprocating laying of the diaphragm. Although this structure has a high film laying efficiency, the two unwinding mechanisms occupy a large space, making the overall volume of the lamination device larger. The other is to set the unwinding mechanism above the lamination table, and the unwinding mechanism unwinds the diaphragm toward the bottom. The diaphragm is laid in a "Z" shape under the reciprocating movement of the swing roller. This structure only needs to set one unwinding mechanism, but it occupies the space above the lamination table, which is not conducive to the layout flexibility of the lamination device. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art battery lamination process that the film lamination equipment occupies a large space, resulting in a large volume of the lamination device, thereby providing a film lamination device, a lamination device and a battery production line.

[0004] In order to solve the above problems, the present invention provides a film stacking device, including: a feeding mechanism for providing a diaphragm; a cutting mechanism, which is arranged at a downstream position of the feeding mechanism, and the cutting mechanism is used to cut the diaphragm; a buffer mechanism, which is arranged downstream of the cutting mechanism, and the buffer mechanism includes a first grabbing roller structure and a first driving structure, and the first grabbing roller structure has a grabbing roller state and a loose roller state, and the first driving structure drives the first grabbing roller structure to rotate a film laying mechanism, which is arranged downstream of the buffer mechanism, and the film laying mechanism includes a first frame, a second grabbing roller structure, a second driving structure and a third driving structure, and the second driving structure is used to drive the second grabbing roller structure to rotate relative to the first frame in a horizontal direction The third driving structure drives the second grabbing roller structure to rotate along the first direction or the second direction, wherein when the second grabbing roller structure grabs the roll with the cache diaphragm, and the second grabbing roller structure moves from the first position to the second position, or from the second position to the first position, the diaphragm can be laid on the stacking table, and the transfer mechanism is used to transfer the roll on the first grabbing roller structure to the second grabbing roller structure, or to transfer the roll on the second grabbing roller structure to the first grabbing roller structure.

[0005] The present invention has the following advantages:

[0006] By using the technical solution of the present invention, the feeding mechanism provides the diaphragm, and at the buffer mechanism, the first grab roller structure grabs the reel, and the first drive structure drives the first grab roller structure to rotate, that is, drives the reel to rotate, thereby buffering the diaphragm. After the diaphragm is buffered, the first grab roller structure releases the reel, the transfer mechanism transfers the reel wound with the diaphragm to the film laying mechanism, and the second grab roller structure grabs the reel. Then the second drive structure drives the second grab roller structure to move from the first position to the second position, and from the second position to the first position. During the movement, the third drive structure drives the second grab roller structure to rotate (in the opposite direction to the direction when the buffered diaphragm is wound), that is, drives the reel to rotate, thereby releasing the buffered diaphragm. The above process realizes the laying of the diaphragm on the laminating table, and can realize the laying of the diaphragm from two directions (the direction from the first position to the second position, and the direction from the second position to the first position). In the above structure, only one feeding mechanism can be provided on the side of the laminating table, so that the diaphragm can be laid in two directions, which reduces the space occupied by the laminating device in the horizontal direction and does not occupy additional vertical space, so that the overall volume of the laminating device is small. Therefore, the technical solution of the present invention solves the problem that the laminating device occupies a large space in the battery laminating process in the prior art, which makes the laminating device large in volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0008] Figure 1 A schematic structural diagram of a film stacking device according to the present invention is shown;

[0009] Figure 2 Shows Figure 1 The enlarged schematic diagram at A in the middle;

[0010] Figure 3 Shows Figure 1 A schematic diagram of the structure of the feeding mechanism of the middle film stacking device;

[0011] Figure 4 Shows Figure 3 A schematic diagram of the structure of the unwinding roller, the eighth mounting seat and the eleventh driving structure of the middle feeding mechanism;

[0012] Figure 5 Shows Figure 1A schematic diagram of the structure of the deviation correction mechanism, film clamping mechanism, cutting mechanism and slitting mechanism of the middle film stacking device;

[0013] Figure 6 Shows Figure 5 A schematic diagram of the structure of the detection structure of the deviation correction mechanism;

[0014] Figure 7 Shows Figure 5 A schematic diagram of the structure of the film clamping mechanism and the cutting mechanism from a side perspective;

[0015] Figure 8 Shows Figure 5 A schematic structural diagram of the film clamping mechanism and the cutting mechanism from another side perspective;

[0016] Fig. 9 Shows Figure 5 Structural diagram of the middle cutting mechanism;

[0017] Fig.10 Shows Figure 1 A schematic diagram of the structure of the buffer mechanism, film laying mechanism and transfer mechanism of the middle film stacking device;

[0018] Fig.11 Shows Fig.10 Schematic diagram of the coordination of the mechanisms on the middle right;

[0019] Fig.12 A schematic structural diagram of a winding roller is shown;

[0020] Fig.13 Shows Fig.12 A schematic cross-sectional view of the middle roll;

[0021] Fig.14 Shows Fig.10 A schematic diagram of the structure of the cache mechanism;

[0022] Fig.15 Shows Fig.10 A schematic diagram of the structure of the first grab roller structure and the winding roller of the middle buffer mechanism;

[0023] Fig.16 Shows Fig.15 A schematic structural diagram of the first grab roller structure and the winding roller from another perspective;

[0024] Fig.17 Shows Fig.15 A cross-sectional view of the first grab roller structure and the winding roller;

[0025] Fig.18 Shows Fig.17 A schematic diagram of the structure of the middle card seat and the card ring;

[0026] Fig.19 Shows Fig.17 A schematic diagram of the structure when the middle clamping ring is in the clamping position;

[0027] Fig. 20 Shows Fig.17 Schematic diagram of the structure when the middle clamp ring is in the loosened position;

[0028] Fig.21 Shows Fig.10 A schematic diagram of the cooperation between the first opening clamping part and the second opening clamping part of the middle buffer mechanism and the winding roller;

[0029] Fig. 22 Shows Fig.10 A schematic diagram of the cooperation between the third opening clamping part of the middle buffer mechanism and the winding roller;

[0030] Fig.23 Shows Fig.10 Structural schematic diagram of the middle film laying mechanism;

[0031] Fig.24 Shows Fig.23 A schematic diagram of the structure of the second film grasping structure, the winding roller, the first opening and clamping part, the second opening and clamping part and the third opening and clamping part of the middle film laying mechanism;

[0032] Fig.25 Shows Fig.23 A schematic diagram of the structure of the first opening and clamping parts and the third opening and clamping parts of the middle film laying mechanism;

[0033] Fig.26 Shows Fig.23 A schematic structural diagram of the second opening clamping portion of the middle film laying mechanism;

[0034] Fig. 27 Shows Fig.10 Schematic diagram of the structure of the transfer mechanism;

[0035] Fig.28 The structural schematic diagram of the lamination table is shown;

[0036] Fig.29 Shows Figure 1 Schematic diagram of step 1 of the method for laying the diaphragm of the middle stack membrane device;

[0037] Fig.30 Shows Figure 1 Schematic diagram of step 2 of the diaphragm laying method of the middle stack membrane device;

[0038] Fig.31 Shows Figure 1 Schematic diagram of step three of the diaphragm laying method of the middle stack membrane device;

[0039] Fig.32 Shows Figure 1 Schematic diagram of step 4 of the diaphragm laying method of the middle stack membrane device;

[0040] Fig.33 Shows Figure 1 Schematic diagram of step 5 of the membrane laying method of the middle stack membrane device;

[0041] Fig.34 Shows Figure 1 Schematic diagram of step six of the method for laying the membrane of the middle stack membrane device;

[0042] Fig.35 Shows Figure 1 Schematic diagram of step seven of the method for laying the membrane in the middle stack membrane device;

[0043] Fig.36 Shows Figure 1 Schematic diagram of step eight of the method for laying the membrane of the middle stack membrane device;

[0044] Fig.37 Shows Figure 1 Schematic diagram of step nine of the method for laying the membrane of the middle stack membrane device;

[0045] Fig.38 Shows Figure 1 Schematic diagram of step 10 of the method for laying the membrane of the middle stack membrane device;

[0046] Fig.39 Shows Figure 1 Schematic diagram of step eleven of the method for laying the diaphragm of the middle stack membrane device.

[0047] Description of reference numerals:

[0048] 1. Diaphragm; 2. Lamination table;

[0049] 10. Feeding mechanism; 11. Unwinding roller; 12. Pressing roller; 13. Static elimination structure; 14. Tensioning structure; 15. Buffer structure; 16. Sixth mounting seat; 17. Eleventh driving structure;

[0050] 20. Cutting mechanism; 21. Second mounting seat; 22. Cutting strip; 23. Sixth driving structure; 24. Seventh driving structure;

[0051] 30. Cache mechanism; 31. First grab roller structure; 32. First drive structure; 33. Mounting rod; 34. Turntable; 35. Winding station; 36. Waiting station;

[0052] 40. Film laying mechanism; 41. First frame; 42. Second grab roller structure; 43. Second driving structure; 44. Third driving structure;

[0053] 50, film clamping mechanism; 51, first mounting seat; 52, third clamping plate; 53, fourth clamping plate; 54, fifth driving structure;

[0054] 60. Deviation correction mechanism; 61. Passing roller; 62. Detection structure; 63. Deviation correction roller; 64. Eighth driving structure;

[0055] 70. second frame; 80. third mounting seat; 90. ninth driving structure;

[0056] 100, slitting mechanism; 101, fourth mounting seat; 102, fifth mounting seat; 103, blade; 104, tenth driving structure; 105, adjustment structure;

[0057] 110, transfer mechanism; 111, clamping claw; 112, rotating frame; 113, fourth driving structure;

[0058] 120, winding roller; 121, roller body; 1211, first hole; 1212, second hole; 122, first clamping plate; 123, second clamping plate; 124, first guide rod; 125, first elastic member; 126, second guide rod; 127, second elastic member; 128, recess;

[0059] 130, first opening clamping part; 140, second opening clamping part; 160, third opening clamping part;

[0060] 151, seat; 1511, mounting recess; 1512, third hole; 1513, locking ball; 152, snap ring; 1521, first wall surface; 1522, second wall surface; 153, third elastic member. DETAILED DESCRIPTION

[0061] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0065] like Figure 1 , Fig.10 and Fig.11 As shown, the film stacking device according to the present application includes a feeding mechanism 10, a cutting mechanism 20, a buffer mechanism 30, a film laying mechanism 40 and a transfer mechanism 110. Among them, the feeding mechanism 10 is used to provide the diaphragm 1. The cutting mechanism 20 is arranged at the downstream position of the feeding mechanism 10, and the cutting mechanism 20 is used to cut the diaphragm 1. The buffer mechanism 30 is arranged downstream of the cutting mechanism 20, and the buffer mechanism 30 includes a first grab roller structure 31 and a first drive structure 32. The first grab roller structure 31 has a grab roller state and a loose roller state, and the first drive structure 32 drives the first grab roller structure 31 to rotate. The film laying mechanism 40 is arranged downstream of the buffer mechanism 30, and the film laying mechanism 40 includes a first frame 41, a second grab roller structure 42, a second drive structure 43 and a third drive structure 44. The second drive structure 43 is used to drive the second grab roller structure 42 to move in the horizontal direction relative to the first frame 41, and make the second grab roller structure 42 have a first position close to the buffer mechanism 30 and a second position away from the buffer mechanism 30. The second gripping roller structure 42 has a gripping roller state and a loose roller state, and the third driving structure 44 drives the second gripping roller structure 42 to rotate along the first direction or the second direction. The transfer mechanism 110 is used to transfer the roll 120 on the first gripping roller structure 31 to the second gripping roller structure 42, or to transfer the roll 120 on the second gripping roller structure 42 to the first gripping roller structure 31.

[0066] Furthermore, when the second grabbing roller structure 42 grabs the roll 120 with the cached diaphragm, and the second grabbing roller structure 42 moves from the first position to the second position, or from the second position to the first position, the diaphragm 1 can be laid on the stacking table 2.

[0067] Using the technical solution of this embodiment, the feeding mechanism 10 provides the diaphragm, and at the cache mechanism 30, the first grab roller structure 31 grabs the reel, and the first drive structure 32 drives the first grab roller structure 31 to rotate, that is, drives the reel 120 to rotate, thereby caching the diaphragm 1. After the diaphragm 1 is cached, the first grab roller structure 31 releases the reel 120, the transfer mechanism 110 transfers the reel 120 wound with the diaphragm 1 to the film laying mechanism 40, and the second grab roller structure 42 grabs the reel 120. Then the second drive structure 43 drives the second grab roller structure 42 to move from the first position to the second position, and from the second position to the first position. During the movement, the third drive structure 44 drives the second grab roller structure 42 to rotate (in the opposite direction to the direction when the cached diaphragm 1 is wound), that is, drives the reel 120 to rotate, thereby releasing the cached diaphragm 1. The above process realizes laying the diaphragm 1 on the stacking table 2, and can realize laying the diaphragm from two directions (the direction from the first position to the second position, and the direction from the second position to the first position). In the above structure, only one feeding mechanism can be set on the side of the stacking table, so that the diaphragm can be laid in two directions, which reduces the space occupied by the stacking device in the horizontal direction and does not occupy additional vertical space, making the overall volume of the stacking device smaller. Therefore, the technical solution of this embodiment solves the problem that in the battery stacking process in the prior art, the stacking equipment occupies a large space, making the stacking device large in volume.

[0068] Combination Figure 1 and Figure 2 It can be seen that in the film stacking device of this embodiment, when laying the diaphragm 1, it must pass through the feeding mechanism 10, the deviation correction mechanism 60, the film clamping mechanism 50, the cutting mechanism 20, the slitting mechanism 100, the buffer mechanism 30, the transfer mechanism 110 and the film laying mechanism 40 in sequence. In order to facilitate the understanding of the technical solution of this embodiment, the following first introduces each mechanism in detail according to the order in which the diaphragm 1 passes during the circulation process.

[0069] 1. Feeding

[0070] like Figures 1 to 3 As shown, along the flow direction of the diaphragm 1 , the feeding mechanism 10 includes a unwinding roller 11 , a pressure roller 12 , an electrostatic elimination structure 13 , a tensioning structure 14 and a buffer structure 15 .

[0071] In this embodiment, the function of the feeding mechanism 10 is to unwind the diaphragm 1 and provide it to the downstream process. Figure 4 It can be seen that the unwinding roller 11 is driven to rotate by a motor. When unwinding, the membrane roll is placed on the unwinding roller 11, and after the motor is started, the unwinding roller 11 can be driven to rotate, so that the unwinding roller 11 unwinds the membrane roll.

[0072] Optionally, the unwinding roller 11 and the motor shaft of the motor may be directly connected or indirectly connected. Figure 4 In the technical solution, the motor shaft of the motor is connected to the unwinding roller 11 through a synchronous belt, that is, indirectly connected.

[0073] Optionally, the unwinding roller 11 is an inflatable shaft, and the diaphragm roll can be clamped or released by inflating or deflating the unwinding roller 11.

[0074] from Figure 3 It can be seen that the pressure roller 12 is arranged at the downstream position of the unwinding roller 11, and its function is to press the diaphragm 1, that is, to tension the diaphragm 1. Further, the pressure roller 12 can be connected to the driving end of the linear drive mechanism, that is, the position of the pressure roller 12 can be adjusted, thereby adjusting the tension degree.

[0075] In this embodiment, the function of the static elimination structure 13 is to eliminate static electricity on the surface of the diaphragm 1. Figure 3 It can be seen that the static elimination structures 13 are arranged in two separated groups, which are respectively located on both sides of the diaphragm 1 . The two static elimination structures 13 can eliminate static electricity on both the front and back sides of the diaphragm 1 .

[0076] In this embodiment, the tensioning structure 14 is used to tension the diaphragm 1. Specifically, the tensioning structure 14 includes a swing rod, the middle part of which is connected to the motor shaft of the motor, and tensioning rollers are provided at both ends of the swing rod, and the diaphragm 1 passes through the two tensioning rollers from both sides. When the swing rod swings, the two tensioning rollers can be driven to swing, thereby achieving a tensioning effect on the diaphragm 1, and the tensioning degree of the tensioning rollers can be controlled by controlling the swing angle of the swing rod.

[0077] like Figure 3 As shown, a buffer structure 15 is provided downstream of the tensioning structure 14. The function of the buffer structure 15 is to buffer the diaphragm 1 when the downstream production rhythm slows down, and to release the buffered diaphragm 1 when the downstream production rhythm speeds up. Specifically, the buffer structure 15 includes a buffer roller, which is connected to the driving end of a linear drive mechanism and can move. In this embodiment, the buffer roller can move along Figure 3 Move left and right as shown.

[0078] Specifically, when the diaphragm 1 needs to be cached, the cache roller moves away from the downstream, that is, toward Figure 3 When the diaphragm 1 needs to be released, the buffer roller moves in the downstream direction, i.e. towards Figure 3 The left side of the diagram is shown. This allows the feed and feed of the film stacking device to match.

[0079] like Figure 4As shown, in the technical solution of this embodiment, the feeding mechanism 10 also includes a sixth mounting seat 16 and an eleventh driving structure 17, the unwinding roller 11 is movably arranged on the sixth mounting seat 16, and the eleventh driving structure 17 drives the unwinding roller 11 to move along its axial direction.

[0080] Specifically, the eleventh driving structure 17 is used to correct the first deviation of the unwound diaphragm 1. The mounting frame of the unwinding roller 11 can be slidably mounted on the sixth mounting seat 16. Specifically, the two are connected by a slide rail and a slider. The sliding direction of the unwinding roller 11 is consistent with the axial direction of the unwinding roller 11, that is, the unwinding roller 11 can be on the sixth mounting seat 16, along the Figure 4 The eleventh driving structure 17 drives the unwinding roller 11 to slide relative to the sixth mounting seat 16.

[0081] Furthermore, the eleventh driving structure 17 is specifically a motor, the motor shaft of the motor is connected to the rotating shaft of the lead screw nut, and the slider of the lead screw nut is connected to the mounting frame of the unwinding roller 11. Therefore, when the motor is forward or reverse, the slider of the lead screw nut can drive the unwinding roller 11 to slide relative to the sixth mounting seat 16.

[0082] Optionally, the eleventh driving structure 17 may also be a linear driving mechanism such as a driving cylinder.

[0083] Furthermore, a sensor is provided on the circulation path of the diaphragm 1, and the sensor detects the degree of deviation of the diaphragm 1. When the sensor detects that the degree of deviation of the diaphragm 1 exceeds a threshold value, the control system starts the eleventh driving structure 17, thereby driving the unwinding roller 11 to move on the sixth mounting seat 16, until the sensor detects that the position of the diaphragm 1 is returned to the correct position, and the deviation is completely corrected.

[0084] Optionally, the sensor in this embodiment is arranged between two static elimination structures 13 .

[0085] In addition, the feeding mechanism 10 also includes a plurality of rollers, which play a role in limiting the flow path and reversing of the membrane 1. When the membrane 1 passes through the last roller, it is fed to the subsequent mechanism.

[0086] 2. Correction

[0087] After the membrane 1 is unwound, it needs to be corrected again to ensure the accuracy of the subsequent laying of the membrane 1. That is, after the membrane 1 flows out of the feeding mechanism 10, it needs to enter the correcting mechanism 60, which is arranged between the feeding mechanism 10 and the film clamping mechanism 50.

[0088] like Figure 5As shown, in the technical solution of this embodiment, in the flow direction along the diaphragm 1, the correcting mechanism 60 includes a passing roller 61, a detection structure 62 and a correcting roller 63, and the correcting mechanism 60 also includes an eighth driving structure 64, and the eighth driving structure 64 is used to drive the cutting mechanism 20, the film clamping mechanism 50, and the correcting roller 63 to move synchronously along the flow direction perpendicular to the diaphragm 1.

[0089] from Figure 5 It can be seen that the function of the roller 61 is to adjust the direction of the flow of the diaphragm 1 into the deviation correction mechanism 60 .

[0090] The function of the detection structure 62 is to detect the degree of displacement of the diaphragm 1. Its specific structure is as follows: Figure 6 As shown, the detection structure 62 includes a mounting plate, and the side of the mounting plate has a notch. Two sensors are respectively arranged on the upper and lower sides of the notch. One of the two sensors is a transmitting end, and the other is a receiving end (for example, emitting light and receiving light). When the diaphragm 1 flows through the notch, it can block part of the sensor. When the degree of displacement of the diaphragm 1 is different, the area of ​​the blocked sensor is also different. The sensor determines whether the displacement of the diaphragm 1 exceeds the threshold by detecting the blocking area of ​​the diaphragm 1.

[0091] Of course, the detection structure 62 may also adopt other conventional detection sensors.

[0092] like Figure 6 As shown, the function of the deflection correction roller 63 is to adjust the position of the diaphragm 1 so that it returns to the normal position from the offset position. The diaphragm passes through the deflection correction roller 63, and the eighth driving structure 64 can drive the deflection correction roller 63 to move, so that the deflection correction roller 63 drives the diaphragm 1 to move through friction force to achieve position adjustment.

[0093] Furthermore, the eighth driving structure 64 is a linear driving mechanism such as a linear motor and a driving cylinder. The eighth driving structure 64 can drive the correcting roller 63 to move along a flow direction perpendicular to the diaphragm, that is, drive the correcting roller 63 to move along the direction of its axis.

[0094] When the detection structure 62 detects that the deviation degree of the diaphragm 1 exceeds the threshold value, the control system starts the eighth driving structure 64, so that the correction roller 63 moves along its axial direction until the detection structure 62 detects that the position of the diaphragm 1 has returned to the correct position, and the correction is complete.

[0095] Further, from Figure 5 It can be seen that there are two deflection correction rollers 63 arranged in parallel, and the relative positions of the two deflection correction rollers 63 are fixed and move synchronously. Figure 2It can be seen that the diaphragm 1 passes through the upper and lower sides of the two deflection correction rollers 63. Such an arrangement enables the deflection correction roller 63 to exert a greater friction force on the diaphragm 1, ensuring that when the deflection correction roller 63 moves, the diaphragm 1 can be driven to move by the greater friction force, thereby achieving a deflection correction effect.

[0096] Of course, when the surface friction of the correction roller 63 is large, only one correction roller 63 may be provided. Alternatively, more than two correction rollers 63 may be provided, and the diaphragm 1 passes through each correction roller 63 in an up-and-down staggered manner in turn, thereby applying a greater friction force.

[0097] In addition, in order to ensure that the diaphragm 1 is also corrected at the downstream position of the correcting roller 63, in this embodiment, the eighth driving structure 64 needs to drive the correcting roller 63, the downstream film clamping mechanism 50 and the cutting mechanism 20 (along the flow direction perpendicular to the diaphragm 1) to move synchronously to ensure the consistency of the position of the diaphragm 1 upstream and downstream.

[0098] In some embodiments not shown, if the unwinding accuracy of the diaphragm 1 is high and its position accuracy can be guaranteed, it is also a feasible embodiment not to provide the deviation correction mechanism 60.

[0099] After passing through the deviation correction roller 63, the diaphragm flows into the subsequent mechanism.

[0100] 3. Film clamping and cutting

[0101] After the diaphragm 1 flows out of the deviation correction mechanism 60, it needs to pass through the film clamping mechanism 50 and the cutting mechanism 20 before film laying. The film clamping mechanism 50 is arranged at the upstream position of the cutting mechanism 20, and the film clamping mechanism 50 can clamp the diaphragm 1 or release the diaphragm 1. The cutting mechanism 20 can cut the diaphragm 1.

[0102] The function of the film clamping mechanism 50 is to clamp the diaphragm 1, thereby fixing the diaphragm 1. The function of the cutting mechanism 20 is to cut the diaphragm 1. The timing of clamping and releasing the diaphragm 1 by the film clamping mechanism 50, and the timing of cutting the diaphragm 1 by the cutting mechanism 20 will be described in detail below during the laying process of the diaphragm 1. This section first introduces the structures of the film clamping mechanism 50 and the cutting mechanism 20.

[0103] like Figure 7 and Figure 8 As shown, in the technical solution of this embodiment, the film clamping mechanism 50 includes a first mounting seat 51, a third clamping plate 52, a fourth clamping plate 53 and a fifth driving structure 54. At least one of the third clamping plate 52 and the fourth clamping plate 53 is movably arranged on the first mounting seat 51, and the fifth driving structure 54 is used to drive the third clamping plate 52 and the fourth clamping plate 53 to move closer to each other or away from each other.

[0104] Specifically, the third clamping plate 52 and the fourth clamping plate 53 are both flat plate structures, and the two are arranged opposite to each other. When the third clamping plate 52 and the fourth clamping plate 53 move closer to each other, the diaphragm 1 can be clamped, and when the third clamping plate 52 and the fourth clamping plate 53 move away from each other, the diaphragm can be loosened.

[0105] The third clamping plate 52 and the fourth clamping plate 53 may be arranged on the first mounting seat 51 in the following ways: 1. The third clamping plate 52 and the fourth clamping plate 53 may be movably arranged on the first mounting seat 51; 2. The third clamping plate 52 may be movably arranged on the first mounting seat 51, and the fourth clamping plate 53 may be fixedly arranged on the first mounting seat 51; 3. The third clamping plate 52 may be fixedly arranged on the first mounting seat 51, and the fourth clamping plate 53 may be movably arranged on the first mounting seat 51. The second arrangement is adopted in this embodiment.

[0106] from Figure 7 It can be seen that the fifth driving structure 54 is a linear driving structure, which can be a linear motor, a driving cylinder, etc. The fifth driving structure 54 is arranged on the first mounting seat 51 and is located below the third clamping plate 52. The driving end of the fifth driving structure 54 is connected to the third clamping plate 52. Those skilled in the art can understand that when the driving end of the fifth driving structure 54 is extended, the third clamping plate 52 can be driven to move toward the fourth clamping plate 53, that is, the diaphragm 1 is clamped. When the driving end of the fifth driving structure 54 is retracted, the third clamping plate 52 can be driven to move away from the fourth clamping plate 53, that is, the diaphragm 1 is released.

[0107] like Figure 7 and Figure 8 As shown, in the technical solution of this embodiment, the cutting mechanism 20 includes a second mounting seat 21, a cutting strip 22 and a sixth driving structure 23. The second mounting seat 21 is movably arranged on the first mounting seat 51, and the cutting strip 22 is arranged on the second mounting seat 21 and is located at a downstream position of the third clamping plate 52 and the fourth clamping plate 53. The sixth driving structure 23 drives the second mounting seat 21 to move in the vertical direction.

[0108] Specifically, the second mounting seat 21 can be mounted on the first mounting seat 51 through a guide rail structure. Figure 8It can be seen that the sixth drive structure 23 is a linear drive structure, which can be a linear motor, a drive cylinder, etc. The drive end of the sixth drive structure 23 is connected to the second mounting seat 21. Those skilled in the art can understand that when the drive end of the sixth drive structure 23 is extended, the second mounting seat 21 can be driven to move upward relative to the first mounting seat 51, and when the drive end of the sixth drive structure 23 is retracted, the second mounting seat 21 can be driven to move downward relative to the first mounting seat 51. Since the cutting strip 22 is arranged on the second mounting seat 21, the sixth drive structure 23 can drive the cutting strip 22 to move in the up and down directions. During the movement, the cutting strip 22 passes through the diaphragm 1 to achieve cutting of the diaphragm 1.

[0109] Optionally, the cutting strip 22 may be a metal wire, which generates heat when energized and cuts the diaphragm 1 after passing through the diaphragm 1 .

[0110] Further, from Figure 7 and Figure 8 It can also be seen that the first mounting seat 51 is a plate-shaped structure. The second mounting seat 21 is arranged on the first surface of the first mounting seat 51, and the sixth driving structure 23 is arranged on the first surface of the second mounting seat 21. Extension plates are arranged on both sides of the second mounting seat 21, and the ends of the extension plates are wound from the side of the first mounting seat 51 to the front side of the second surface of the first mounting seat 51, and the two ends of the cutting strip 22 are respectively connected to the two extension plates. The fifth driving structure is arranged on the second surface of the first mounting seat 51.

[0111] Such arrangement enables the fifth driving structure 54 and the sixth driving structure 23 to be located on two surfaces of the first mounting seat 51 respectively, and their movement strokes do not interfere with each other, and can ensure that the cutting strip 22 is located downstream of the third clamping plate 52 and the fourth clamping plate 53 .

[0112] In this embodiment, the first surface of the first mounting seat 51 is a surface facing the upstream direction, and the second surface of the first mounting seat 51 is a surface facing the downstream direction.

[0113] like Figure 7 and Figure 8 As shown, in the technical solution of this embodiment, a seventh driving structure 24 is provided at least at one end of the cutting strip 22 . The seventh driving structure 24 is provided on the second mounting seat 21 and is used to apply a pulling force toward the outside to the end of the cutting strip 22 .

[0114] Specifically, at high temperatures, the cutting strip 22 may expand, causing it to be not a straight line. At this time, cutting the diaphragm 1 will result in an uneven cut, affecting the quality of the battery cell. By setting the seventh drive structure 24, the seventh drive structure 24 can apply an outward pulling force to the end of the cutting strip 22, so that the cutting strip 22 can always remain in a tensioned state at different temperatures, thereby ensuring the cutting quality of the diaphragm 1.

[0115] from Figure 7 and Figure 8 It can be seen that one end of the cutting strip 22 is fixed on one of the extension plates, and the seventh driving structure 24 can be optionally a guide rail cylinder, which is arranged on another extension plate, and the other end of the cutting strip 22 is connected to the slider of the guide rail cylinder. The guide rail cylinder always applies an outward pulling force to the end of the cutting strip 22 to keep it in a straight line state, and the applied pulling force is preferably not to damage the cutting strip 22.

[0116] Of course, the seventh driving structure 24 may also be other linear driving mechanisms such as a linear motor and a driving cylinder.

[0117] In an embodiment not shown, a seventh driving structure 24 may also be provided on both extension plates. In this case, both ends of the cutting strip 22 are respectively connected to the driving ends of the two seventh driving structures 24. The pulling forces applied by the two seventh driving structures 24 are in opposite directions, further ensuring that the cutting strip 22 is in a tensioned state.

[0118] 4. Cutting

[0119] like Figure 5 and Fig. 9 As shown, in the technical solution of this embodiment, the film stacking device further includes a slitting mechanism 100, which is arranged at a downstream position of the cutting mechanism 20, and the slitting mechanism 100 is used to slit the diaphragm 1 into multiple strips.

[0120] Specifically, from Fig.28 It can be seen that there are two rows of stacking positions on the stacking table 2, so the stacking device in this embodiment can lay diaphragms for two rows of battery cells at a time, and the laying efficiency is higher. Before laying the diaphragm 1, the diaphragm 1 needs to be cut into two rows by the cutting mechanism 100, and the two rows of diaphragms 1 are laid on the two rows of pole pieces respectively.

[0121] It should be noted that in some embodiments not shown, if there is only one row of stacking positions on the stacking table, that is, only one row of pole pieces needs to be laid with the diaphragm 1, then there is no need to cut the diaphragm 1, that is, not providing the cutting mechanism 100 is also a feasible implementation method.

[0122] like Fig. 9As shown, in the technical solution of this embodiment, the slitting mechanism 100 includes a fourth mounting seat 101, a fifth mounting seat 102, a blade 103, a tenth driving structure 104 and an adjusting structure 105. The fifth mounting seat 102 is movably arranged on the fourth mounting seat 101, the tenth driving structure 104 is arranged on the fifth mounting seat 102, and the blade 103 is arranged on the driving end of the tenth driving structure 104. The tenth driving structure 104 can drive the blade 103 to extend or retract, and the adjusting structure 105 is used to adjust the relative position of the fifth mounting seat 102 relative to the fourth mounting seat 101.

[0123] Specifically, the fourth mounting seat 101 is a plate-shaped structure, and the fifth mounting seat 102 is a plate-shaped structure. The fifth mounting seat 102 is movably arranged on the fourth mounting seat 101, and the moving direction is horizontal and along the flow direction perpendicular to the diaphragm 1. The movement of the fifth mounting seat 102 can be guided by structures such as guide rails, slide rails, linear grooves and protrusions.

[0124] Optionally, the adjustment structure 105 is a micrometer head, which is fixedly arranged on the fourth mounting seat 101, and the adjustment head of the micrometer head is connected to the side of the fifth mounting seat 102. The operator can control the head of the micrometer head to extend or retract by rotating the micrometer head, so as to achieve fine adjustment of the horizontal position of the fifth mounting seat 102. When the fifth mounting seat 102 moves, the tenth driving structure 104 and the blade 103 are driven to move synchronously, so as to achieve fine adjustment of the horizontal position of the blade 103, thereby ensuring the slitting accuracy of the diaphragm 1.

[0125] Further, from Fig. 9 It can be seen that the tenth driving structure 104 is optionally a driving cylinder, which is fixedly arranged on the fifth mounting seat 102, and the push rod of the driving cylinder is connected to the blade 103 through an "L"-shaped plate. Those skilled in the art can understand that when the push rod of the driving cylinder is extended, the blade 103 is extended, and the diaphragm 1 can be cut at this time, and when the push rod of the driving cylinder is retracted, the blade 103 is retracted, and the diaphragm 1 is not cut at this time.

[0126] Furthermore, a protective cover is also provided on the fourth mounting seat 101. When the blade 103 is in the retracted state, the blade 103 is located in the protective cover, thereby preventing the operator from being cut.

[0127] Furthermore, the blade 103 in this embodiment is set to one, and in some embodiments not shown, when it is necessary to lay diaphragms for more columns of pole pieces, the number of blades 103 can be increased accordingly.

[0128] After the diaphragm 1 is cut, the next process can be carried out, that is, the diaphragm 1 is laid on the lamination table 2 by the film laying mechanism 40 .

[0129] like Figure 5 As shown, in the technical solution of this embodiment, the film stacking device also includes a second frame 70, a third mounting seat 80 and a ninth driving structure 90. The third mounting seat 80 is movably arranged on the second frame 70, and the ninth driving structure 90 is used to drive the third mounting seat 80 to move upstream or downstream along the flow direction of the diaphragm 1 relative to the second frame 70. And the slitting mechanism 100 (when the mechanism is provided), the cutting mechanism 20, the film clamping mechanism 50 and the deviation correction mechanism 60 are all arranged on the third mounting seat 80.

[0130] Specifically, the ninth driving structure 90 may be a driving cylinder, and the third mounting seat 80 may be a mounting plate. The driving cylinder may drive the mounting plate to move along the flow direction of the pole piece, including moving in the upstream direction and moving in the downstream direction. The movement of the mounting plate may drive the slitting mechanism 100, the cutting mechanism 20, the film clamping mechanism 50 and the deviation correction mechanism 60 to move synchronously.

[0131] The ninth driving structure 90 and the third mounting seat 80 mainly function to enable the film clamping mechanism 50 to clamp the diaphragm 1 and then transport it downstream for a certain distance, so that the winding roller 120 can grab the diaphragm 1.

[0132] 5. Cache, transfer and laying of diaphragms

[0133] like Fig.10 and Fig.11 As shown, after the diaphragm 1 is cut, the following steps can be performed, namely, caching and laying. These two steps are mainly achieved by the caching mechanism 30 and the film laying mechanism 40.

[0134] Specifically, the buffer mechanism 30 is arranged at the downstream position of the cutting mechanism 20, and includes a first gripping roller structure 31 and a first driving structure 32. The first gripping roller structure 31 is used to fix the winding roller 120, and it has a gripping roller state and a loose roller state. The gripping roller state means that the first gripping roller structure 31 can fix the winding roller 120 thereon, and the loose roller state means that the first gripping roller structure 31 does not fix the winding roller 120, and the winding roller 120 can be pulled off the first gripping roller structure 31.

[0135] Those skilled in the art can understand that when the winding roller 120 needs to be installed on the first grabbing roller structure 31, the first grabbing roller structure 31 is first placed in a loose roller state, and then the winding roller 120 is installed on the first grabbing roller structure 31, and finally the first grabbing roller structure 31 is placed in a grabbing roller state. When the winding roller 120 needs to be removed from the first grabbing roller structure 31, the first grabbing roller structure 31 is placed in a loose roller state.

[0136] Furthermore, the first driving structure 32 is used to drive the first grabbing roller structure 31 to rotate. When the first grabbing roller structure 31 has a winding roller 120 and is in a grabbing roller state, the first driving structure 32 drives the first grabbing roller structure 31 to rotate, and the barrel drives the winding roller 120 to rotate, thereby winding the diaphragm 1, that is, caching the diaphragm 1 on the winding roller 120.

[0137] When the roller 120 buffers the diaphragm 1 , the first driving structure 32 can drive the roller 120 to rotate clockwise or counterclockwise.

[0138] Optionally, the first driving structure may be a motor.

[0139] from Fig.10 and Fig.11 It can be seen that the film laying mechanism 40 is arranged at the downstream position of the buffer mechanism 30, and includes a first frame 41, a second grab roller structure 42, a second drive structure 43 and a third drive structure 44. Among them, the second drive structure 43 is a linear drive structure, and its driving direction is upstream or downstream along the stacking platform 2. The third drive structure 44 is a rotary drive structure, which is connected to the driving end of the second drive structure 43, and the second grab roller structure 42 is connected to the driving end of the third drive structure 44. In this way, the second grab roller structure 42 can move along the upstream direction or downstream direction of the stacking platform 2, and at the same time, the second grab roller structure 42 can rotate along its own axis.

[0140] It should be noted that the second gripping roller structure 42 also has a gripping roller state and a loosening roller state, which is consistent with the first gripping roller structure 31, and its function is also to fix or loosen the winding roller 120. Therefore, the manner in which the second gripping roller structure 42 fixes or loosens the winding roller 120 can refer to the description of the first gripping roller structure 31, which will not be repeated here.

[0141] Optionally, the second driving structure 43 may be a linear cylinder, a linear motor, or the like.

[0142] Optionally, the third driving structure 44 may be a motor.

[0143] Through the above structure, the second grab roller structure 42 has a first position and a second position. Fig.10 In the direction shown, when the second grabbing roller structure 42 moves to the right end close to the cache mechanism 30, it is in the first position, and when the second grabbing roller structure 42 moves to the left end away from the cache mechanism 30, it is in the second position.

[0144] Furthermore, the first position and the second position are actually located on both sides of the lamination platform 2 , so when the second driving structure 43 drives the second grabbing roller structure 42 to move back and forth between the first position and the second position, it also drives the winding roller 120 to move back and forth above the lamination platform 2 .

[0145] Further, the third driving structure 44 can drive the second grab roller structure 42 to rotate, that is, drive the winding roller 120 to rotate. The function of the third driving structure 44 is to release the diaphragm 1 cached on the winding roller 120 by driving the winding roller 120 to rotate, so as to lay the diaphragm 1 on the lamination table 2. Those skilled in the art can understand that the second grab roller structure 42 can be driven to rotate in the first direction or the second direction, and one of the first direction and the second direction is clockwise and the other is counterclockwise. When the second grab roller structure 42 releases the diaphragm on the winding roller 120, the rotation direction is opposite to the rotation direction of the winding roller 120 when the diaphragm is cached. For example, if the rotation direction of the winding roller 120 when caching the diaphragm is counterclockwise, the second grab roller structure 42 rotates clockwise when releasing the diaphragm on the winding roller 120; if the rotation direction of the winding roller 120 when caching the diaphragm is clockwise, the second grab roller structure 42 rotates counterclockwise when releasing the diaphragm on the winding roller 120.

[0146] Through the above mechanism, the film laying mechanism 40 lays the film in such a manner that, during the reciprocating movement of the second grabbing roller structure 42 between the first position and the second position, the second grabbing roller structure 42 simultaneously rotates the winding roller 120 to release the buffered diaphragm 1 , thereby laying the diaphragm 1 on the stacking table 2 .

[0147] Furthermore, the membrane 1 starts to be laid at the first position. According to the buffer length of the membrane 1 on the roller 120, the end position of the laying device can have various situations, for example:

[0148] 1. The second grab roller structure 42 moves from the first position to the second position to complete the laying, and at this time, a layer of diaphragm is laid;

[0149] 2. The second grab roller structure 42 moves from the first position to the second position and then returns to the first position to complete the laying. At this time, two layers of diaphragm are laid;

[0150] 3. The second grab roller structure 42 moves back and forth between the first position and the second position for multiple times to complete the laying. At this time, more than two layers of multi-layer diaphragms are laid, and the laying end position can be the first position or the second position.

[0151] Furthermore, the film laying equipment also includes a transfer mechanism 110, the function of which is to transfer the roller 120 between the first grab roller structure 31 and the second grab roller structure 42. Specifically, when the roller 120 is at the cache mechanism 30, after the first grab roller structure 31 rotates to cache the diaphragm 1, the transfer mechanism 110 transfers the roller 120 from the first grab roller structure 31 to the second grab roller structure 42, that is, to the film laying mechanism 40, and then the roller 120 lays the diaphragm 1. When the roller 120 completes the laying of the diaphragm 1, that is, after the roller 120 releases the diaphragm 1, the transfer mechanism 110 transfers the roller 120 from the second grab roller structure 42 to the first grab roller structure 31, that is, to the cache mechanism 30, and the roller 120 caches the diaphragm 1 again.

[0152] like Fig.12 and Fig.13 As shown, in the technical solution of this embodiment, the roller 120 includes a roller body 121 and a first clamping plate 122 and a second clamping plate 123 arranged on the roller body 121. The first clamping plate 122 and the second clamping plate 123 can be opened and closed. The first clamping plate 122 is used to clamp the head of the diaphragm, and the second clamping plate 123 is used to clamp the tail of the diaphragm.

[0153] Specifically, when the winding roller 120 needs to buffer the diaphragm 1, the first clamping plate 122 and the second clamping plate 123 are first opened, and then the diaphragm head is conveyed between the roller body 121 and the first clamping plate 122, and the first clamping plate 122 is closed to fix the diaphragm head. The first grabbing roller structure 31 rotates, thereby driving the roller body 121 to rotate and winding the diaphragm 1 on the roller body 121. When the diaphragm 1 is buffered on the roller body 121 for a preset length, the second clamping plate 123 is closed to clamp the diaphragm tail, and finally the cutting mechanism 20 cuts the diaphragm 1.

[0154] Furthermore, when the roller 120 needs to lay the membrane 1, the second clamping plate 123 is opened first, that is, the membrane tail is used as the starting end of the laying. Then, the roller 120 is driven to lay the membrane 1 through the second driving structure 43 and the third driving structure 44. When the roller 120 completes the laying of the membrane 1, the first clamping plate 122 is opened, thereby releasing the membrane head, that is, releasing the ending end of the laying.

[0155] from Fig.12 and Fig.13 It can be seen that the roller body 121 is in the shape of an elongated strip, and has a section on its circumference, which extends along the axial direction. The first clamping plate 122 is also in the shape of an elongated strip, and its outer surface includes an arc surface and a plane, and the plane matches the above-mentioned section. When the first clamping plate 122 is closed on the roller body 121, the outer contours of the roller body 121 and the first clamping plate 122 are circular, so as to facilitate the winding of the diaphragm 1.

[0156] from Fig.12 and Fig.13 It can also be seen that the second clamping plate 123 is also a long strip structure, and its length is shorter than that of the first clamping plate 122. Two second clamping plates 123 are provided, and the two second clamping plates 123 are respectively arranged at the two ends of the roller body 121, that is, the two second clamping plates 123 clamp the two sides of the diaphragm tail.

[0157] Furthermore, the first clamping plate 122 and the second clamping plate 123 are offset in the circumferential direction of the roller body 121 to prevent interference between the opening and closing of the first clamping plate 122 and the second clamping plate 123. Optionally, in this embodiment, the first clamping plate 122 and the second clamping plate 123 are offset in the circumferential direction of the roller body 121 by 90 degrees.

[0158] In some embodiments not shown, the roller body 121 may also fix the diaphragm head and the diaphragm tail through other structures, such as through vacuum adsorption holes.

[0159] like Fig.12 and Fig.13 As shown, in the technical solution of this embodiment, a first hole 1211 is provided on the roller body 121, and the winding roller 120 further includes a first guide rod 124 and a first elastic member 125. The first guide rod 124 is inserted into the first hole 1211, and the first guide rod 124 is connected to the first clamping plate 122, and the first elastic member 125 is provided between the first guide rod 124 and the roller body 121, and is used to provide an elastic force to the first clamping plate 122 toward the roller body 121.

[0160] Specifically, when the first clamping plate 122 is not subjected to an external force for opening, the elastic force of the first elastic member 125 causes the first clamping plate 122 to be close to the roller body 121, that is, it is in a closed state. When the first clamping plate 122 is subjected to an external force for opening, the first guide rod 124 moves, and at the same time drives the first elastic member 125 to be compressed. When the external force disappears, the first elastic member 125 releases the elastic force, so that the first clamping plate 122 is in a closed state again.

[0161] Optionally, a limiting head is provided at the end of the first guide rod 124 facing away from the first clamping plate 122, and the first elastic member 125 can be optionally a spring, which is sleeved outside the first guide rod 124, one end of the spring abuts against the roller body 121 (abuts against the outer surface of the roller body 121, or the first hole 1211 is a stepped hole, abuts against the stepped surface of the first hole 1211), and the other end of the spring abuts against the limiting head.

[0162] In some embodiments not shown, the first clamping plate 122 may be directly connected to the driving end of the linear drive structure, for example, a linear motor, a drive cylinder, etc. may be provided on the roller body 121. The opening and closing of the first clamping plate 122 may be directly driven by the direct drive structure, and in this case, the first hole 1211, the first guide rod 124, and the first elastic member 125 may not be provided.

[0163] like Fig.12 and Fig.13 As shown, in the technical solution of this embodiment, a second hole 1212 is further provided on the roller body 121, and the winding roller 120 also includes a second guide rod 126 and a second elastic member 127. The second guide rod 126 is inserted into the second hole 1212, and the second guide rod 126 is connected to the second clamping plate 123. The second elastic member 127 is provided between the second guide rod 126 and the roller body 121, and is used to provide an elastic force to the second clamping plate 123 toward the roller body 121.

[0164] Specifically, when the second clamping plate 123 is not subjected to an external force for opening, the elastic force of the second elastic member 127 causes the second clamping plate 123 to be close to the roller body 121, that is, it is in a closed state. When the second clamping plate 123 is subjected to an external force for opening, the second guide rod 126 moves, and at the same time drives the second elastic member 127 to be compressed. When the external force disappears, the second elastic member 127 releases the elastic force, so that the second clamping plate 123 is in a closed state again.

[0165] Optionally, a limiting head is provided at one end of the second guide rod 126 facing away from the second clamping plate 123, and the second elastic member 127 can be optionally a spring, which is sleeved outside the second guide rod 126, one end of the spring abuts against the roller body 121 (abuts against the outer surface of the roller body 121, or the second hole 1212 is a stepped hole, abuts against the stepped surface of the second hole 1212), and the other end of the spring abuts against the limiting head.

[0166] In some embodiments not shown, the second clamping plate 123 may be directly connected to the driving end of the linear drive structure, for example, a linear motor, a drive cylinder, etc. may be provided on the roller body 121. The second clamping plate 123 may be directly driven to open and close through the direct drive structure, and the second hole 1212, the second guide rod 126, and the second elastic member 127 may not be provided.

[0167] As described above, whether the roller 120 is used to cache the diaphragm 1 or to lay the diaphragm 1, the first clamping plate 122 and the second clamping plate 123 need to be opened. Figures 14 to 16 ,as well as Fig.24 As shown, in this embodiment, the buffer mechanism 30 and the film laying mechanism 40 both include a first opening clamping portion 130 and a second opening clamping portion 140. The first opening clamping portion 130 is used to drive the first clamping plate 122 to open relative to the roller body 121, and the second opening clamping portion 140 is used to drive the second clamping plate 123 to open relative to the roller body 121.

[0168] In some of the above-mentioned embodiments not shown, if the first clamping plate 122 is directly driven by a linear drive structure, the first opening clamping portion 130 may not be provided; if the second clamping plate 123 is directly driven by a linear drive structure, the second opening clamping portion 140 may not be provided; if the first clamping plate 122 and the second clamping plate 123 are both directly driven by a linear drive structure, then both the first opening clamping portion 130 and the second opening clamping portion 140 do not need to be provided.

[0169] like Fig.21 and Fig. 22 As shown, the structure of the first opening and clamping part 130 and the second opening and clamping part 140 at the cache mechanism 30 is first described. The first opening and clamping part 130 includes a retractable first pushing head, which is connected to the driving end of the linear driving structure, so that the first pushing head can be extended or retracted. Among them, the linear driving structure can be a linear motor, a driving cylinder, etc.

[0170] There are two ways for the first opening clamping portion 130 to open the first clamping plate 122: one is that the first pushing head pushes the end of the first guide rod 124 away from the first clamping plate 122, and the movement of the first guide rod 124 can drive the first clamping plate 122 to move, thereby opening the first clamping plate 122 relative to the roller body 121; the other is that the first pushing head can extend between the roller body 121 and the first clamping plate 122, thereby expanding the first clamping plate 122 relative to the roller body 121, thereby opening the first clamping plate 122.

[0171] In this embodiment, the first clamping portion 130 drives the first clamping plate 122 to open in the second manner. More specifically, the roller body 121 and the first clamping plate 122 are provided with notches at positions corresponding to the first pushing head, and the first pushing head can extend from the notches to between the two. A guide wheel is also provided at the end of the first pushing head, so that the first pushing head can extend more smoothly between the roller body 121 and the first clamping plate 122.

[0172] like Fig.21 and Fig. 22 As shown, in the technical solution of this embodiment, the second opening and clamping portion 140 includes a retractable second pushing head, which is used to push the second guide rod 126 , or the second pushing head is used to extend between the roller body 121 and the second clamping plate 123 .

[0173] Similar to the above-mentioned first opening and clamping portion 130, there are also two ways for the second opening and clamping portion 140 to open the second clamping plate 123: one is that the second pushing head pushes the end of the second guide rod 126 away from the second clamping plate 123. At this time, the movement of the second guide rod 126 can drive the second clamping plate 123 to move, thereby opening the second clamping plate 123 relative to the roller body 121; the other is that the second pushing head can extend between the roller body 121 and the second clamping plate 123, thereby expanding the second clamping plate 123 relative to the roller body 121, thereby achieving the effect of opening the second clamping plate 123.

[0174] In this embodiment, the second opening clamping portion 140 drives the second clamping plate 123 to open in the first manner. Specifically, the second pushing head is disposed opposite to the second guide rod 126, and when the second pushing head is extended, the second guide rod 126 can be pushed to move.

[0175] Since two second clamping plates 123 are provided, two second clamping portions 140 are also provided correspondingly.

[0176] Furthermore, the structures of the first opening clamping part 130 and the second opening clamping part 140 of the film laying mechanism 40 are consistent with the structures and opening principles of the first opening clamping part 130 and the second opening clamping part 140 of the above-mentioned cache mechanism 30, so they are not repeated here.

[0177] like Fig.24 As shown, in the technical solution of this embodiment, the first clamping portion 130 of the film laying mechanism 40 is arranged at the first position and / or the second position, and the second clamping portion 140 of the film laying mechanism 40 is connected to the driving end of the second driving structure 43 so that the second clamping portion 140 moves synchronously with the second grabbing roller structure 42, and the second clamping portion 140 is arranged on the outside of the second grabbing roller structure 42.

[0178] As described above, in the process of laying the membrane 1, the second clamping plate 123 must first be opened to release the membrane tail. Therefore, in this embodiment, the second clamping portion 140 of the membrane laying mechanism 40 is configured to be connected to the driving end of the second driving structure 43.

[0179] from Fig.24 It can be seen that the film laying mechanism 40 includes a connecting plate, one end of which is connected to the driving end of the second driving structure 43. The extending direction of the connecting plate is parallel to the axial direction of the winding roller 120 (after being installed on the second grabbing roller structure 42). Two second opening clamping parts 140 are arranged on the connecting plate at intervals.

[0180] With such arrangement, when the reel 120 buffering the diaphragm 1 is mounted on the second gripping roller structure 42, the second opening and clamping portion 140 can move synchronously with the reel 120 between the first position and the second position. Therefore, by controlling the timing of extending the second pushing head of the second opening and clamping portion 140, the starting position of laying the diaphragm 1 can be controlled. The starting position of laying the diaphragm 1 is usually at the first position, but can also be at the second position, or a position between the first position and the second position can be selected according to actual needs. As long as the second driving structure 43 drives the reel 120 to move to a predetermined position, the second pushing head of the second opening and clamping portion 140 is extended, and the laying of the diaphragm can be started at a specific position.

[0181] from Fig.24 It can also be seen that a lifting structure is provided on the above-mentioned connecting plate, and the lifting structure can be a linear motor, a driving cylinder, etc. The lifting structure is connected to the driving end of the second driving structure 43, and the driving end of the lifting structure is connected to the connecting plate. In this way, the lifting structure can drive the two second opening clamping parts 140 to move up and down. When the second opening clamping part 140 opens the second clamping plate 123 and releases the diaphragm tail, the lifting structure drives the second opening clamping part 140 to rise, thereby preventing the second opening clamping part 140 from interfering with the diaphragm 1 being released.

[0182] Further, as described above, after the diaphragm 1 is laid, the first clamping plate 122 needs to be opened to release the diaphragm head and completely place the diaphragm 1 on the laminating table 2. Therefore, the first opening clamping portion 130 can be provided at the end of the diaphragm 1 according to actual needs. Fig.24 It can be seen that in this embodiment, a first opening portion 130 is provided at the first position. Of course, according to actual needs, a first opening portion 130 may also be provided at the second position, or a first opening portion 130 may be provided at both the first position and the second position.

[0183] Specifically, the film laying mechanism 40 includes a connecting rod fixedly connected to the first frame 41, the extending direction of the connecting rod is parallel to the axial direction of the winding roller 120 (after being installed on the second grabbing roller structure 42), and the first opening clamping part 130 is arranged on the connecting rod. Fig.24 It can also be seen that the first opening clamping portion 130 and the second opening clamping portion 140 are respectively located at two sides of the second grab roller structure 42. The first opening clamping portion 130 is located at the upstream position, and the second opening clamping portion 140 is located at the downstream position.

[0184] The specific structures of the first grabbing roller structure 31 and the second grabbing roller structure 42 are described in detail below.

[0185] like Fig.15 and Fig. 20As shown, in the technical solution of this embodiment, the first grabbing roller structure 31 and the second grabbing roller structure 42 both include a clamping seat 151 and a clamping ring 152. The clamping seat 151 is provided with a mounting recess 1511, and the winding roller 120 can be inserted into the mounting recess 1511. The clamping ring 152 is movably provided on the clamping seat 151 and is used to be sleeved outside the winding roller 120. The clamping ring 152 has a clamping position and a loosening position. When the clamping ring 152 is in the clamping position, the winding roller 120 is fixed on the clamping seat 151. When the clamping ring 152 is in the loosening position, the winding roller 120 can be pulled out from the mounting recess 1511.

[0186] Specifically, the holder 151 is used to mount the reel 120, wherein the holder 151 of the first gripping roller structure 31 is connected to the first driving structure 32, and the holder 151 of the second gripping roller structure 42 is connected to the third driving structure 44. That is, the holder 151 can rotate, thereby driving the reel 120 to rotate.

[0187] from Fig.18 It can be seen that the mounting recess 1511 on the holder 151 is a blind hole structure, and its inner diameter is adapted to the outer diameter of the end of the roller 120, so the roller 120 can be inserted into the mounting recess 1511. However, the mounting recess 1511 and the roller 120 are not tightly matched, that is, the mounting recess 1511 does not play the role of axial limiting the roller 120.

[0188] from Fig.18 It can be seen that the role of the clamping ring 152 is to limit the axial position of the winding roller 120. By moving the clamping ring 152 between the clamping position and the loosening position, the winding roller 120 can be fixed on the clamping seat 151, or the winding roller 120 can be pulled out from the clamping seat 151.

[0189] Of course, the first grabbing roller structure 31 and the second grabbing roller structure 42 may also adopt other structures, such as claws, suction cups or electromagnets, etc., as long as they can fix and release the winding roller 120.

[0190] like Fig.19 and Fig. 20 As shown, further, a third hole 1512 is provided on the side wall of the mounting recess 1511, and a locking ball 1513 is provided in the third hole 1512, and the locking ball 1513 can float in the radial direction. A recess 128 is provided on the roller 120, and when the roller 120 is inserted into the mounting recess 1511, the recess 128 is arranged corresponding to the third hole 1512. The inner wall of the snap ring 152 includes a first wall surface 1521 and a second wall surface 1522.

[0191] Among them, when the retaining ring 152 is in the clamping position, the first wall 1521 is located on the outside of the locking ball 1513, and the first wall 1521 pushes the locking ball 1513 to make the locking ball 1513 clamped into the recess 128. When the retaining ring 152 is in the loosening position, the second wall 1522 is located on the outside of the locking ball 1513, and the locking ball 1513 can float radially outward so that the locking ball 1513 can escape from the recess 128.

[0192] from Fig.12 and Fig.13 It can be seen that the recess 128 of the roller 120 is annular and extends along the axial direction of the roller 120 , so that when the roller 120 is inserted into the mounting recess 1511 at any circumferential angle, the recess 128 can correspond to the third hole 1512 .

[0193] from Fig.19 and Fig. 20 It can be seen that the inner wall surface of the clamping ring 152 is a stepped surface, including a first wall surface 1521 and a second wall surface 1522. The inner diameter of the first wall surface 1521 is smaller than the inner diameter of the second wall surface 1522. And the first wall surface 1521 is closer to the root position of the roller 120 than the second wall surface 1522. Fig.19 and Fig. 20 It can also be seen that the clamping ring 152 can be switched between a clamping position and a loosening position when it moves in the axial direction.

[0194] like Fig.19 As shown, when the clamping ring 152 is in the clamping position, the first wall surface 1521 presses the locking ball 1513 inwardly, so that a part of the locking ball 1513 is embedded in the recess 128, and the other part is located in the third hole 1512 of the clamping seat 151. Therefore, the axial relative position of the roller 120 and the clamping seat 151 is fixed.

[0195] like Fig. 20 As shown, the snap ring 152 is pushed toward the card seat 151, that is, toward Fig. 20 As shown in the figure, the snap ring 152 is switched from the locked position to the released position. At this time, the second wall 1522 moves to the outside of the locking ball 1513, and there is a certain gap between the locking ball 1513 and the second wall 1522. Fig. 20 It can be seen that the bottom wall of the recess 128 is provided with a guide slope in a "V" shape, so when the reel 120 is pulled outward, the guide slope can push the locking ball 1513 to move outward, so that the locking ball 1513 is separated from the recess 128. At this time, the reel 120 can be pulled outward from the holder 151, or the reel 120 can be installed on the holder 151.

[0196] Optionally, the axial movement of the retaining ring 152 can be achieved through a driving structure, for example, the retaining ring 152 is connected to a driving end of a linear motor or a driving cylinder.

[0197] like Fig.19 and Fig. 20 As shown, in the technical solution of this embodiment, the first grabbing roller structure 31 and the second grabbing roller structure 42 also include a third elastic member 153, and the third elastic member 153 is arranged between the clamping seat 151 and the clamping ring 152, and is used to provide an elastic force to the clamping ring 152 in the direction from the loose position to the clamping position.

[0198] Specifically, when the snap ring 152 is not subjected to external force, the snap ring 152 is in the locked position under the action of the third elastic member 153. Fig.19 and Fig. 20 When an external force toward the right side is applied, the snap ring 152 moves to the unlocking position and the third elastic member 153 is compressed.

[0199] Optionally, the third elastic member 153 is a spring, which is sleeved outside the clamping seat 151 , with one end of the spring abutting against an end surface of the clamping ring 152 , and the other end of the spring abutting against an annular convex edge on the clamping seat 151 .

[0200] from Fig.19 and Fig. 20 It can also be seen that an anti-slip block is provided at the outer end position of the socket 151. When the retaining ring 152 is in the locked position, the anti-slip block abuts against the step surfaces of the first wall 1521 and the second wall 1522, thereby preventing the retaining ring 152 from detaching from the socket 151.

[0201] like Fig.14 , Fig.21 , Fig. 22 and Fig.24 As shown, in the technical solution of this embodiment, the cache mechanism 30 and the film laying mechanism 40 both include a third clamping portion 160, and the third clamping portion 160 includes a retractable third pushing head, which is used to push the clamping ring 152 from a clamping position to a loosened position.

[0202] Specifically, the function of the third opening clamping portion 160 is to drive the clamping ring 152 to the loosened position, so that the winding roller 120 can be removed from the clamping seat 151, or installed on the clamping seat 151. The third pushing head is connected to the linear driving structure, for example, connected to the driving end of the linear motor and the driving cylinder. The extension and retraction direction of the third pushing head is along the axis direction of the winding roller 120.

[0203] Combining the above description of the snap ring 152 and the third elastic member 153, it can be seen that when the third push head is extended, it can push the snap ring 152 from the locked position to the released position. When the third push head is retracted, the third push head does not apply thrust to the snap ring 152, and the snap ring 152 returns to the locked position under the action of the third elastic member 153.

[0204] When the second gripping roller structure 42 is at the first position, it is closest to the buffer mechanism 30, so it is convenient for the transfer mechanism 110 to switch the roll between the first gripping roller structure 31 and the second gripping roller structure 42. Therefore, in this embodiment, the third opening clamping part 160 of the film laying mechanism 40 is arranged at the first position.

[0205] Further, from Fig.24 It can be seen that the third opening clamping portion 160 of the film laying mechanism 40 is arranged on the above-mentioned connecting rod, that is, the first opening clamping portion 130 and the third opening clamping portion 160 of the film laying mechanism 40 are both arranged on the connecting rod, and the two are arranged at intervals.

[0206] like Fig.14 and Fig.29 As shown, in the technical solution of this embodiment, the cache mechanism 30 also includes a turntable 34. There are multiple first grabbing roller structures 31, and the multiple first grabbing roller structures 31 are arranged at intervals along the circumference of the turntable 34. There are winding stations 35 and waiting stations 36 on both sides of the turntable 34. When the turntable 34 rotates, it can drive the first grabbing roller structure 31 to switch between the winding station 35 and the waiting station 36.

[0207] When the first gripping roller structure 31 is at the winding station 35, the reel 120 on the first gripping roller structure 31 can wind the diaphragm 1 released by the feeding mechanism 10. The transfer mechanism 110 is used to transfer the reel 120 on the first gripping roller structure 31 at the waiting station 36 to the second gripping roller structure 42, or to transfer the reel on the second gripping roller structure 42 to the first gripping roller structure 31 at the waiting station 36.

[0208] Specifically, the function of the turntable 34 is to enable other rollers 120 to cache the membrane 1 when the membrane laying mechanism 40 is laying the membrane, that is, to cache the membrane 1 while laying the membrane 1, thereby improving the production rhythm.

[0209] Furthermore, a plurality of first grabbing roller structures 31 are disposed on the rotating disk 34, and the plurality of first grabbing roller structures 31 are spaced and evenly disposed along the circumference of the rotating disk 34, and the number of the first grabbing roller structures 31 disposed may be two or more. Fig.14 and Fig.29 It can be seen that in this embodiment, four first grabbing roller structures 31 are provided, and adjacent first grabbing roller structures 31 are arranged at 90° in the circumferential direction.

[0210] from Fig.29 It can be seen that the side of the turntable 34 facing the feeding mechanism 10 has a winding station 35, and the winding station 35 means that when the first grab roller structure 31 moves to the winding station 35, the winding roller 120 on the first grab roller structure 31 can wind the diaphragm 1 discharged upstream. The side of the turntable 34 facing the laminating table 2 has a waiting station 36, and the waiting station 36 means that when the first grab roller structure 31 moves to the waiting station 36, the winding roller 120 with the diaphragm 1 stored in the buffer is at this station, waiting to be swapped with the empty winding roller 120 on which the diaphragm 1 is laid. That is, the transfer mechanism 110 can transfer the winding roller 120 buffered with the diaphragm 1 from the first grabbing roller structure 31 on the waiting station 36 to the second grabbing roller structure 42 of the film laying mechanism 40, and transfer the empty winding roller 120 after laying the diaphragm 1 from the second grabbing roller structure 42 of the film laying mechanism 40 to the first grabbing roller structure 31 on the waiting station 36.

[0211] When a certain turntable 34 is stationary, there is a first grabbing roller structure 31 on each of the winding station 35 and the waiting station 36. Therefore, when the winding roller 120 of the film laying mechanism 40 is laying the diaphragm 1 and the waiting position of the winding roller 120 at the waiting station 36 is swapped, the winding roller 120 at the winding station 35 can synchronously carry out winding and caching of the diaphragm 1, so that the laying time of the diaphragm 1 is not wasted, and the production cycle is greatly improved.

[0212] The winding roller 120 performs winding and caching of the diaphragm 1 at the winding station 35. The advantage is that the position of the winding roller 120 for winding and caching the diaphragm 1 is close to the correction mechanism 60. Therefore, the diaphragm 1 can be wound and cached after completing the correction mechanism 60, thereby ensuring the winding accuracy of the diaphragm 1 on the winding roller 120, thereby ensuring the accuracy of subsequently laying the diaphragm 1 on the stacking table 2.

[0213] When the roller 120 at the winding station 35 has finished winding the buffer diaphragm 1 and the position of the roller 120 at the waiting station 36 has been swapped, the turntable 34 rotates in steps by a certain angle to drive the roller 120 with the buffer diaphragm 1 to move to the waiting station 36 and drive the empty roller 120 to move to the winding station 35.

[0214] Furthermore, when a certain roll 120 moves from the winding station 35 to the waiting station 36 (or moves from the waiting station 36 to the winding station 35), the number of times the turntable 34 needs to be stepped and the angle of each step rotation are determined according to the number of the first grabbing roller structures 31. In this embodiment, since there are four first grabbing roller structures 31 evenly spaced along the circumferential direction, when a roll 120 moves from the winding station 35 to the waiting station 36, the turntable 34 needs to be stepped twice, and each step rotation is 90°.

[0215] like Fig.14 , Fig.21 and Fig. 22 As shown, in the technical solution of this embodiment, the cache mechanism 30 also includes a mounting rod 33, the first clamping portion 130 and the second clamping portion 140 of the cache mechanism 30 are both arranged on the mounting rod 33, and the first grabbing roller structure 31 is arranged on the outside of the mounting rod 33.

[0216] Specifically, a through hole is provided in the middle of the rotating disk 34, and the mounting rod 33 passes through the through hole, and the mounting rod 33 does not rotate. That is, when the rotating disk 34 rotates, the mounting rod 33 is relatively fixed, and each first grabbing roller structure 31 on the rotating disk 34 rotates around the mounting rod 33.

[0217] Furthermore, the first opening clamping portion 130 , the second opening clamping portion 140 and the third opening clamping portion 160 of the cache mechanism 30 are all disposed on the mounting rod 33 .

[0218] like Fig.21 As shown, since the first clamping plate 122 and the second clamping plate 123 of the roller 120 need to be opened and closed on the winding station 35 to clamp the head and the tail of the diaphragm, the first clamping portion 130 and the second clamping portion 140 are arranged on the same side of the mounting rod 33, and both are arranged toward the winding station 35.

[0219] like Fig. 22 As shown, since the main action of the winding roller 120 at the waiting station 36 is to extract the winding roller 120 with the diaphragm 1 cached therein from the first gripping roller structure 31 and insert the empty winding roller 120 into the first gripping roller structure 31, it is sufficient for the station to switch the position of the clamping ring 152. Therefore, the third clamping portion 160 is arranged on the side of the mounting rod 33 facing the waiting station 36.

[0220] like Fig. 27 As shown, in the technical solution of this embodiment, the transfer mechanism 110 includes an openable and retractable clamping jaw 111 , and the clamping jaw 111 can flow between the first grabbing roller structure 31 and the second grabbing roller structure 42 .

[0221] Specifically, the jaws 111 can be opened and closed, which means that the jaws 111 can clamp or release the roll 120. The jaws 111 can be retracted, which means that when the jaws 111 grab the roll 120, the roll 120 can be pulled out of the holder 151 by retracting the jaws 111, and the roll 120 can be inserted into the holder 151 by extending the jaws 111.

[0222] Furthermore, the opening, closing and extension of the clamping jaws 111 can be achieved by a linear drive mechanism, such as a linear motor, a drive cylinder, and the like.

[0223] from Fig. 27It can be seen that the transfer mechanism 110 further includes a rotating frame 112 and a fourth driving structure 113, and the fourth driving structure 113 drives the rotating frame 112 to rotate. There are two clamping jaws 111, and the two clamping jaws 111 are arranged on the rotating frame 112 at intervals, one of the clamping jaws 111 cooperates with the first grabbing roller structure 31, and the other clamping jaw 111 cooperates with the second grabbing roller structure 42, and the rotating frame 112 drives the two clamping jaws 111 to rotate along the circumferential direction.

[0224] Specifically, combined Fig.29 As shown in the figure, the two clamping jaws 111 are arranged at 180° in the circumferential direction. The following describes the detailed process of the transfer mechanism 110 exchanging the positions of the two rollers 120:

[0225] 1. When the film laying mechanism 40 has finished laying the diaphragm 1 and the empty roll 120 has moved to the first position, and the roll 120 wound and cached with the diaphragm 1 has moved to the waiting station 36, the third opening clamping portion 160 of the cache mechanism 30 pushes the clamping ring 152 of the first grabbing roller structure 31, thereby releasing the roll 120, and the third opening clamping portion 160 of the film laying mechanism 40 pushes the clamping ring 152 of the second grabbing roller structure 42, thereby releasing the roll 120;

[0226] 2. The rotating frame 112 rotates so that the two clamping jaws 111 are horizontally distributed, the two clamping jaws 111 extend, and then clamp the ends of the two winding rollers 120, and then the two clamping jaws 111 retract, and the winding roller 120 with the diaphragm 1 cached therein is pulled out from the first grabbing roller structure 31, and the empty winding roller 120 is pulled out from the second grabbing roller structure 42;

[0227] 3. The rotating frame 112 rotates 180° to swap the positions of the two clamping jaws 111, that is, the positions of the two winding rollers 120 are swapped. At this time, the winding roller 120 with the diaphragm 1 cached therein is located outside the second grabbing roller structure 42, and the empty winding roller 120 is located outside the first grabbing roller structure 31;

[0228] 4. The two clamping jaws 111 extend to insert the reel 120 containing the diaphragm 1 into the second grabbing roller structure 42, and insert the empty reel 120 into the first grabbing roller structure 31;

[0229] 5. The two clamping jaws 111 are released and then retracted;

[0230] 6. The third pushing head of the third opening and clamping part 160 of the cache mechanism 30 is retracted, and the clamping ring 152 of the first grabbing roller structure 31 fixes the empty roll 120 to the first grabbing roller structure 31. The third pushing head of the third opening and clamping part 160 of the film laying mechanism 40 is retracted, and the clamping ring 152 of the second grabbing roller structure 42 fixes the roll 120 with the diaphragm 1 cached therein to the second grabbing roller structure 42.

[0231] 6. Film laying process

[0232] Combining the above structure, and Figures 29 to 39 The film laying process of the film laying equipment of this embodiment will be described in detail below.

[0233] It should be noted that Figures 29 to 39 In the content shown, the dotted line portion represents the transfer mechanism 110 , and the dashed line portion represents the moving path of the second driving structure 43 of the film laying mechanism 40 .

[0234] Although only the winding roller 120 is marked in each figure, a person skilled in the art can understand from the above content that the winding roller 120 on the turntable 34 is fixed by the first grabbing roller structure 31 and the winding roller 120 on the film laying mechanism 40 is fixed by the second grabbing roller structure 42.

[0235] Step 1: If Fig.29 As shown, the winding roller 120 located at the winding station 35 winds up the diaphragm 1;

[0236] Step 2: If Fig.30 As shown, the winding roller 120 has finished winding the diaphragm 1, and the cutting mechanism 20 cuts the diaphragm;

[0237] Step 3: If Fig.31 As shown, the turntable 34 rotates 90° step by step, and the winding roller 120 located at the winding station 35 winds up the diaphragm 1;

[0238] Step 4: If Fig.32 As shown, the winding roller 120 has finished winding the diaphragm 1, and the cutting mechanism 20 cuts off the diaphragm 1;

[0239] Step 5: If Fig.33 As shown, the turntable 34 rotates 90° stepwise, the reel 120 at the winding station 35 winds the diaphragm 1, and the reel 120 buffered with the diaphragm 1 in step 1 flows to the waiting station;

[0240] Step 6: If Fig.34 As shown, the winding roller 120 has finished winding the diaphragm 1, the cutting mechanism 20 cuts the diaphragm 1, and the transfer mechanism 110 swaps the positions of the winding roller 120 buffered with the diaphragm 1 and the empty winding roller 120;

[0241] Step 7: If Fig.35 As shown, the film laying mechanism 40 performs the diaphragm laying, and the turntable 34 rotates 90° in steps;

[0242] Step 8: If Fig.36 As shown, the winding roller 120 located at the winding station 35 winds the diaphragm 1, and the film laying mechanism 40 finishes laying the diaphragm 1, and the empty winding roller 120 moves to the first position;

[0243] Step 9: If Fig.37As shown, the winding roller 120 has finished winding the diaphragm 1, the cutting mechanism 20 cuts the diaphragm 1, and the transfer mechanism 110 swaps the positions of the winding roller 120 buffered with the diaphragm 1 and the empty winding roller 120;

[0244] Step 10: Fig.38 As shown, the turntable 34 rotates 90° step by step, and the film laying mechanism 40 starts laying the diaphragm 1;

[0245] Step 11: Fig.39 As shown, the winding roller 120 located at the winding station 35 winds up the membrane 1 .

[0246] By repeating steps eight to eleven, high-speed reciprocating laying of the diaphragm 1 can be performed. Meanwhile, the laying of the diaphragm 1 and the caching of the diaphragm 1 are performed synchronously, which greatly improves the production rhythm.

[0247] The present application also provides a lamination device. According to an embodiment of the lamination device of the present application, the lamination device includes a lamination table 2, the above-mentioned film lamination device, a film making mechanism and a conveying mechanism.

[0248] from Fig.28 It can be seen that a lamination position is arranged on the top of the lamination platform 2, and a positive electrode sheet pressing knife and a negative electrode sheet pressing knife are arranged on the side of the lamination position.

[0249] Furthermore, the feeding mechanism 10, the deviation correcting mechanism 60, the film clamping mechanism 50, the cutting mechanism 20 and the slitting mechanism 100 of the film stacking device are located at the end of the stacking platform 2. The two film laying mechanisms 40 are located at both sides of the stacking platform 2 respectively.

[0250] In this embodiment, only one feeding mechanism 10 is provided on one side of the lamination table 2 .

[0251] The film-making mechanism is used for processing the positive electrode sheets and the negative electrode sheets, and the transport mechanism can transport the positive electrode sheets and the negative electrode sheets back and forth to the lamination table.

[0252] Furthermore, the working process of the stacking device is as follows: the transport mechanism transports a group of positive electrode sheets to the stacking platform - the film laying mechanism 40 lays a layer of diaphragm 1 - the mechanism transports a group of negative electrode sheets to the stacking platform - the film laying mechanism 40 lays a layer of diaphragm 1, and so on. And after laying a layer of positive electrode sheets and a layer of diaphragm, the positive electrode sheet pressing knife presses the material below, and after laying a layer of negative electrode sheets and a layer of diaphragm, the negative electrode sheet pressing knife presses the material below, and the positive electrode sheet pressing knife and the negative electrode sheet pressing knife work alternately and reciprocatingly.

[0253] In addition, the stacking position of the stacking table 2 can be moved in the vertical direction by a driving mechanism. After each layer of material is placed, the stacking position is lowered by a certain distance, which drives all the laid materials to be lowered by a certain distance, thereby ensuring that the top material always remains in a horizontal plane.

[0254] The present application also provides a battery production line. The battery production line according to the present application includes the above-mentioned stacking device.

[0255] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A film stacking device, characterized in that: include: A feeding mechanism (10) for providing the diaphragm (1); A cutting mechanism (20) is arranged at a downstream position of the feeding mechanism (10), and the cutting mechanism (20) is used to cut off the diaphragm (1); a buffer mechanism (30) disposed downstream of the cutting mechanism (20), the buffer mechanism (30) comprising a first grabbing roller structure (31) and a first driving structure (32), the first grabbing roller structure (31) having a grabbing roller state and a loose roller state, the first driving structure (32) driving the first grabbing roller structure (31) to rotate; A film laying mechanism (40) is arranged downstream of the buffer mechanism (30), and the film laying mechanism (40) comprises a first frame (41), a second grab roller structure (42), a second drive structure (43) and a third drive structure (44). The second drive structure (43) is used to drive the second grab roller structure (42) to move horizontally relative to the first frame (41), and to enable the second grab roller structure (42) to have a first position close to the buffer mechanism (30) and a second position away from the buffer mechanism (30). The second grab roller structure (42) has a grab roller state and a loose roller state. The third drive structure (44) drives the second grab roller structure (42) to rotate in the first direction or the second direction. When the second grab roller structure (42) grabs a roll (120) with a buffer membrane, and the second grab roller structure (42) moves from the first position to the second position, or from the second position to the first position, the membrane (1) can be laid on the stacking table (2). The transfer mechanism (110) is used to transfer the winding roller (120) on the first gripping roller structure (31) to the second gripping roller structure (42), or to transfer the winding roller (120) on the second gripping roller structure (42) to the first gripping roller structure (31).

2. The film stacking device according to claim 1, characterized in that: The winding roller (120) comprises a roller body (121) and a first clamping plate (122) and a second clamping plate (123) arranged on the roller body (121); the first clamping plate (122) and the second clamping plate (123) can both be opened and closed; the first clamping plate (122) is used to clamp the head of the diaphragm, and the second clamping plate (123) is used to clamp the tail of the diaphragm.

3. The film stacking device according to claim 2, characterized in that: The roller body (121) is provided with a first hole (1211), and the winding roller (120) further comprises a first guide rod (124) and a first elastic member (125), wherein the first guide rod (124) is inserted into the first hole (1211), and the first guide rod (124) is connected to the first clamping plate (122), and the first elastic member (125) is arranged between the first guide rod (124) and the roller body (121), and is used for providing an elastic force to the first clamping plate (122) toward the roller body (121); and / or, The roller body (121) is provided with a second hole (1212), and the winding roller (120) further comprises a second guide rod (126) and a second elastic member (127), wherein the second guide rod (126) is inserted into the second hole (1212), and the second guide rod (126) is connected to the second clamping plate (123), and the second elastic member (127) is arranged between the second guide rod (126) and the roller body (121), and is used for providing an elastic force to the second clamping plate (123) toward the roller body (121).

4. The film stacking device according to claim 3, characterized in that: The cache mechanism (30) and the film laying mechanism (40) both include a first opening and clamping portion (130) and / or a second opening and clamping portion (140), wherein the first opening and clamping portion (130) is used to drive the first clamping plate (122) to open relative to the roller body (121), and the second opening and clamping portion (140) is used to drive the second clamping plate (123) to open relative to the roller body (121).

5. The film stacking device according to claim 4, characterized in that: The first opening and clamping portion (130) comprises a retractable first pushing head, the first pushing head is used to push the first guide rod (124), or the first pushing head is used to extend between the roller body (121) and the first clamping plate (122); and / or, The second opening and clamping portion (140) comprises a retractable second pushing head, the second pushing head being used to push the second guide rod (126), or the second pushing head being used to extend between the roller body (121) and the second clamping plate (123).

6. The film stacking device according to claim 4, characterized in that: The cache mechanism (30) further comprises a mounting rod (33), the first clamping portion (130) and the second clamping portion (140) of the cache mechanism (30) are both arranged on the mounting rod (33), and the first grabbing roller structure (31) is arranged on the outside of the mounting rod (33); And / or, the first clamping portion (130) of the film laying mechanism (40) is arranged at the first position, and the second clamping portion (140) of the film laying mechanism (40) is connected to the driving end of the second driving structure (43) so that the second clamping portion (140) moves synchronously with the second grabbing roller structure (42), and the second clamping portion (140) is arranged on the outer side of the second grabbing roller structure (42).

7. The film stacking device according to any one of claims 1 to 6, characterized in that: The first grabbing roller structure (31) and the second grabbing roller structure (42) both comprise a clamping seat (151) and a clamping ring (152); the clamping seat (151) is provided with a mounting recess (1511), and the winding roller (120) can be inserted into the mounting recess (1511); the clamping ring (152) is movably provided on the clamping seat (151) and is used to be sleeved outside the winding roller (120); the clamping ring (152) has a clamping position and a loosening position; when the clamping ring (152) is in the clamping position, the winding roller (120) is fixed on the clamping seat (151); when the clamping ring (152) is in the loosening position, the winding roller (120) can be drawn out from the mounting recess (1511).

8. The film stacking device according to claim 7, characterized in that: A third hole (1512) is provided on the side wall of the mounting recess (1511), a locking ball (1513) is provided in the third hole (1512), and the locking ball (1513) can float in the radial direction; a recess (128) is provided on the roller (120), and when the roller (120) is inserted into the mounting recess (1511), the recess (128) is arranged corresponding to the third hole (1512); the inner wall of the retaining ring (152) includes a first wall surface (1521) and a second wall surface (1522); Wherein, when the snap ring (152) is in the clamping position, the first wall surface (1521) is located on the outside of the locking ball (1513), and the first wall surface (1521) pushes the locking ball (1513) so that the locking ball (1513) is clamped into the recess (128); when the snap ring (152) is in the loosening position, the second wall surface (1522) is located on the outside of the locking ball (1513), and the locking ball (1513) can float radially outward, so that the locking ball (1513) can escape from the recess (128); And / or, the first grabbing roller structure (31) and the second grabbing roller structure (42) both further include a third elastic member (153), wherein the third elastic member (153) is disposed between the clamping seat (151) and the clamping ring (152), and is used to provide an elastic force to the clamping ring (152) in a direction from the loosened position to the clamped position.

9. The film stacking device according to claim 8, characterized in that: The buffer mechanism (30) and the film laying mechanism (40) both include a third opening and clamping portion (160), and the third opening and clamping portion (160) includes a retractable third pushing head, and the third pushing head is used to push the clamping ring (152) from the clamping position to the loosening position.

10. The film stacking device according to claim 9, characterized in that: The third opening clamping portion (160) of the film laying mechanism (40) is arranged at the first position and / or the second position.

11. The film stacking device according to any one of claims 1 to 6, characterized in that: The cache mechanism (30) further comprises a rotating disk (34), the first grabbing roller structures (31) are multiple, the multiple first grabbing roller structures (31) are arranged at intervals along the circumference of the rotating disk (34), and the two sides of the rotating disk (34) are provided with a winding station (35) and a waiting station (36), and the rotating disk (34) can drive the first grabbing roller structure (31) to switch between the winding station (35) and the waiting station (36) when the rotating disk (34) rotates. When the first gripping roller structure (31) is in the winding station (35), the winding roller (120) on the first gripping roller structure (31) can wind the diaphragm (1) released by the feeding mechanism (10), and the transfer mechanism (110) is used to transfer the winding roller (120) on the first gripping roller structure (31) located at the waiting station (36) to the second gripping roller structure (42), or to transfer the winding roller on the second gripping roller structure (42) to the first gripping roller structure (31) located at the waiting station (36).

12. The film stacking device according to any one of claims 1 to 6, characterized in that: The transfer mechanism (110) comprises an openable and retractable clamp (111), and the clamp (111) is capable of circulating between the first grabbing roller structure (31) and the second grabbing roller structure (42).

13. The film stacking device according to claim 12, characterized in that: The transfer mechanism (110) further comprises a rotating frame (112) and a fourth driving structure (113), wherein the fourth driving structure (113) drives the rotating frame (112) to rotate, and the number of the clamping jaws (111) is two, and the two clamping jaws (111) are arranged on the rotating frame (112) at intervals, wherein one of the clamping jaws (111) cooperates with the first grabbing roller structure (31), and the other clamping jaw (111) cooperates with the second grabbing roller structure (42), and the rotating frame (112) drives the two clamping jaws (111) to rotate in a circumferential direction.

14. The film stacking device according to any one of claims 1 to 6, characterized in that: The film stacking device also includes a film clamping mechanism (50), which is arranged at an upstream position of the cutting mechanism (20), and the film clamping mechanism (50) is capable of clamping the diaphragm (1) or loosening the diaphragm (1). The film clamping mechanism (50) includes a first mounting seat (51), a third clamping plate (52), a fourth clamping plate (53) and a fifth driving structure (54), and at least one of the third clamping plate (52) and the fourth clamping plate (53) is movably arranged on the first mounting seat (51), and the fifth driving structure (54) is used to drive the third clamping plate (52) and the fourth clamping plate (53) to move closer to or away from each other.

15. The film stacking device according to claim 14, characterized in that: The cutting mechanism (20) comprises a second mounting seat (21), a cutting strip (22) and a sixth driving structure (23); the second mounting seat (21) is movably arranged on the first mounting seat (51); the cutting strip (22) is arranged on the second mounting seat (21) and is located downstream of the third clamping plate (52) and the fourth clamping plate (53); the sixth driving structure (23) drives the second mounting seat (21) to move in a vertical direction; at least one end of the cutting strip (22) is provided with a seventh driving structure (24); the seventh driving structure (24) is arranged on the second mounting seat (21) and is used to apply a pulling force toward the outside to the end of the cutting strip (22).

16. The film stacking device according to claim 14, characterized in that: The film stacking device further comprises a deviation correction mechanism (60), wherein the deviation correction mechanism (60) is arranged between the feeding mechanism (10) and the film clamping mechanism (50).

17. The film stacking device according to claim 16, characterized in that: The film stacking device also includes a second frame (70), a third mounting seat (80) and a ninth driving structure (90); the third mounting seat (80) is movably arranged on the second frame (70); the ninth driving structure (90) is used to drive the third mounting seat (80) to move upstream or downstream along the direction of flow of the diaphragm (1) relative to the second frame (70); the cutting mechanism (20), the film clamping mechanism (50) and the deviation correction mechanism (60) are all arranged on the third mounting seat (80).

18. The film stacking device according to any one of claims 1 to 6, characterized in that: The film stacking device further comprises a slitting mechanism (100), wherein the slitting mechanism (100) is arranged at a downstream position of the cutting mechanism (20), and the slitting mechanism (100) is used to slit the diaphragm (1) into a plurality of strips.

19. The film stacking device according to any one of claims 1 to 6, characterized in that: In the flow direction along the diaphragm (1), the feeding mechanism (10) comprises an unwinding roller (11), a pressure roller (12), an electrostatic elimination structure (13), a tensioning structure (14) and a buffer structure (15).

20. A lamination device, characterized in that: include: Lamination table (2); A film stacking device, wherein the film stacking device is the film stacking device according to any one of claims 1 to 19, and the film laying mechanism (40) is arranged on the side of the stacking platform (2); A film-making mechanism, used for providing positive and negative electrode sheets; A transport mechanism is used to transport the positive electrode sheet and the negative electrode sheet to the stacking platform (2).

21. A battery production line, characterized in that: Comprising a lamination device as claimed in claim 20.

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