Stacked core taking and conveying device and hot pressing device

Abstract

The utility model provides a stacked core taking and conveying device and a hot pressing device. The stacked core taking and conveying device comprises a high-temperature-resistant film, a supporting mechanism and a moving mechanism; the high-temperature-resistant film is in contact with the surface of the stacked core; the supporting mechanism is used for supporting the high-temperature-resistant film and connected with the moving mechanism, and the moving mechanism is used for moving the supporting mechanism; when the stacked core is taken and conveyed, the supporting mechanism is moved to the two opposite faces of the stacked core through the moving mechanism, and the high-temperature-resistant film clamps the stacked core. The stacked core hot-pressing device comprises an upper hot-pressing block and a lower hot-pressing block; the device further comprises the stacked core taking and conveying device. When the stacked core is hot-pressed, the upper hot-pressing block and the lower hot-pressing block press the stacked core through the high-temperature-resistant film, and the upper hot-pressing block and the lower hot-pressing block conduct heat transfer on the stacked core through the high-temperature-resistant film. The position of the supporting mechanism is adjustable through the moving mechanism, and the taking and conveying requirements of stacked cores of different sizes are met; when the stacked core is hot-pressed, the supporting mechanism moves through the moving mechanism to avoid the hot-pressing block and the high-temperature-resistant film to support the stacked core and transfer heat to the stacked core, and imprint is avoided.

Description

Technical Field

[0001] The utility model patent relates to the field of lithium ion batteries, in particular to a stacked core picking and feeding device and a hot pressing device. Background Art

[0002] In the prior art, the stacking process is often used in the assembly and manufacturing process of lithium ion batteries. Compared with the winding process, the stacking process has the advantages of high space utilization rate, excellent precision performance, and the stacked core is not easily deformed. Generally, after stacking, hot pressing treatment is required. Especially for the stacked core using a coated separator, the hardness of the stacked core and the adhesion between the electrode sheet and the separator can be improved after hot pressing treatment, which plays an important role in preventing the displacement of the electrode sheet during the processing and turnover of subsequent processes. At present, in the industry, whether the stacked core is hot pressed first or glued first, most hot pressing plates use the method of disconnecting the middle plate, lifting and clamping the stacked core with a cylinder and then hot pressing. In this way, whether it is the processing accuracy of the hot pressing plate or the consistency problem between the lifting plate and the middle plane of the heating plate, it will cause indentations on the surface of the stacked core after hot pressing, and this indentation will have an irreversible impact on the appearance of the stacked core / the final performance of the battery. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a stacked core picking and feeding device and a hot pressing device.

[0004] To solve the problems in the prior art, the utility model discloses a stacked core picking and feeding device, which includes a high-temperature resistant film, an upper support mechanism, a lower support mechanism and a moving mechanism. The upper support mechanism and the lower support mechanism respectively support the high-temperature resistant film. The upper support mechanism and the lower support mechanism are connected to the moving mechanism, and the moving mechanism is used to move the positions of the upper support mechanism and the lower support mechanism.

[0005] The technical effects obtained by the above settings are as follows: When picking and feeding the stacked core, the support mechanism is adjustable in position through the moving mechanism to meet the picking and feeding requirements of stacked cores of different sizes; when hot pressing the stacked core, the support mechanism moves through the moving mechanism to avoid the hot pressing block, and the stacked core is supported by the high-temperature resistant film to transfer heat to the stacked core, avoiding the generation of imprints.

[0006] Further, the upper support mechanism includes: a first roller seat assembly and a third roller seat assembly; the lower support mechanism includes a second roller seat assembly and a fourth roller seat assembly; the moving mechanism includes: a first transverse movement mechanism, a second transverse movement mechanism, a first vertical movement mechanism, and a second vertical movement mechanism; the first roller seat assembly and the second roller seat assembly are disposed on the first vertical movement mechanism, and the first vertical movement mechanism is connected to the first transverse movement mechanism; the third roller seat assembly and the fourth roller seat assembly are disposed on the second vertical movement mechanism, and the second vertical movement mechanism is connected to the second transverse movement mechanism; the first roller seat assembly and the third roller seat assembly support a set of high-temperature resistant films, and the second roller seat assembly and the fourth roller seat assembly support another set of high-temperature resistant films.

[0007] The technical effects achieved by the above settings are as follows: Through the transverse movement mechanism and the vertical movement mechanism, the position of the roller seat assembly can be adjusted in both the horizontal and vertical directions; the movement flexibility of the support mechanism is further improved by deploying four roller seat assemblies.

[0008] Further, the first transverse movement mechanism includes a first motor and a first motion module; the second transverse movement mechanism includes a second motor and a second motion module; the first motion module is connected to the first vertical movement mechanism; the second motion module is connected to the second vertical movement mechanism; the first motor is driven through the first motion module to drive the first vertical movement mechanism to move transversely; the second motor is driven through the second motion module to drive the second vertical movement mechanism to move transversely.

[0009] The technical effects achieved by the above settings are as follows: Through motor drive, it is convenient to achieve automatic control.

[0010] Further, the first vertical movement mechanism includes a first guide rail, a first slider, a second slider, and a first linear drive mechanism; the first roller seat assembly is slidably connected to the first guide rail through the first slider, and the second roller seat assembly is slidably connected to the first guide rail through the second slider; the first linear drive mechanism is used to drive the first roller seat assembly and the second roller seat assembly to move vertically; the second vertical movement mechanism includes a second guide rail, a third slider, a fourth slider, and a second linear drive mechanism; the third roller seat assembly is slidably connected to the second guide rail through the third slider, and the fourth roller seat assembly is slidably connected to the second guide rail through the fourth slider; the second linear drive mechanism is used to drive the third roller seat assembly and the fourth roller seat assembly to move vertically.

[0011] The technical effects achieved by the above settings are as follows: The sliding connection method between the slider and the guide rail is simple and reliable.

[0012] Further, the first linear drive mechanism includes a first air cylinder and a second air cylinder, the first air cylinder is used to drive the first roller seat assembly to move vertically, and the second air cylinder is used to drive the second roller seat assembly to move vertically; the second linear drive mechanism includes a third air cylinder and a fourth air cylinder; the third air cylinder is used to drive the third roller seat assembly to move vertically, and the fourth air cylinder is used to drive the fourth roller seat assembly to move vertically.

[0013] The technical effects achieved by the above settings: Through the cylinder drive, it is convenient to achieve automatic control.

[0014] Furthermore, each roller seat assembly includes at least one rotating clamping roller.

[0015] The technical effects achieved by the above settings: Each roller seat assembly having at least one rotating clamping roller can meet the basic working requirements.

[0016] Furthermore, the number of rotating clamping rollers in each roller seat assembly is two, and the two rotating clamping rollers are arranged at a certain angle.

[0017] The technical effects achieved by the above settings: Setting two rotating clamping rollers in each roller seat assembly can fully stretch the high-temperature resistant film, avoid wrinkles in the high-temperature resistant film, and thus avoid imprints during hot pressing.

[0018] Furthermore, each roller seat assembly further includes: a roller seat, a housing, a union nut, and a bearing; both ends of the rotating clamping roller are rotatably connected to the roller seat through the union nut, the bearing is arranged between the rotating clamping roller and the roller seat, and the housing is arranged outside the rotating clamping roller.

[0019] The technical effects achieved by the above settings: The structure of the union nut and the bearing realizes the dynamic balance of the roller seat assembly.

[0020] Furthermore, the surface of the housing is a smooth surface.

[0021] The technical effects achieved by the above settings: Avoid damaging the stacked core or the high-temperature resistant film during operation.

[0022] Furthermore, the surface of the housing is provided with a tea-colored super-hard oxide layer.

[0023] The technical effects achieved by the above settings: Improve the wear resistance of the housing surface, avoid burrs generated on the housing surface due to wear, and thus scratch the stacked core or the high-temperature resistant film.

[0024] Furthermore, the surface of the housing is provided with a plurality of holes, and chamfers are provided at the openings of the plurality of holes.

[0025] The technical effects achieved by the above settings: Chamfers are made at the openings of the holes that need to be generated on the housing surface due to connecting parts, avoiding the sharp corners at the openings from cutting the stacked core or the high-temperature resistant film.

[0026] Furthermore, the sharp corners on the surface of the housing are chamfered.

[0027] The technical effects achieved by the above settings: The possible sharp corners on the housing surface are chamfered, avoiding the sharp corners from scratching the stacked core or the high-temperature resistant film.

[0028] Further, the high-temperature resistant film is a Mylar film.

[0029] The technical effects achieved by the above settings: The Mylar film is a tough polyester polymer with the following advantages: good heat preservation: it can effectively keep the hot pressing block warm during the lamination core hot pressing, saving energy consumption; good mechanical flexibility: it has good mechanical flexibility and strong anti-drop performance. For example, in some products, two layers of MYLAR film are used, and it is not easy to be damaged even if it is dropped or slightly bumped. Clear: high transparency and good visual effect. Long service life.

[0030] Further, both ends of the high-temperature resistant film are fixed by fixing blocks.

[0031] The technical effects achieved by the above settings: It avoids the movement of the high-temperature resistant film during the picking, sending or hot pressing process.

[0032] The present invention also provides a lamination core hot pressing device, including an upper hot pressing block and a lower hot pressing block; characterized in that it further includes the lamination core picking and sending device as described above.

[0033] The technical effects achieved by the above settings: During the lamination core hot pressing, the upper hot pressing block and the lower hot pressing block form a press fit on the lamination core through the high-temperature resistant film, and the upper hot pressing block and the lower hot pressing block respectively transfer heat to the lamination core through the high-temperature resistant film; during hot pressing, the support mechanism of the lamination core hot pressing device completely avoids the hot pressing block, and the lamination core is supported by the high-temperature resistant film to complete hot pressing, effectively avoiding the generation of imprints during the lamination core hot pressing process.

[0034] Further, both the upper hot pressing block and the lower hot pressing block are seamless and complete hot pressing blocks.

[0035] The technical effects achieved by the above settings: In the prior art, segmented hot pressing blocks are mostly used, and it is easy to generate indentations during the hot pressing process; the complete hot pressing block effectively avoids this problem.

[0036] Further, the surfaces of the upper hot pressing block and the lower hot pressing block are provided with Teflon layers.

[0037] The technical effects achieved by the above settings: The Teflon layer has the following properties: 1. Corrosion resistance: It can resist the erosion of most chemical substances, including strong acids, strong bases and organic solvents. 2. Low friction coefficient: The surface is smooth, the friction coefficient is extremely low, and it has good self-lubrication. 3. High temperature resistance: It can maintain stable performance within a wide temperature range. 4. Electrical insulation: It has good electrical insulation performance.

[0038] Further, the surface flatness of the upper hot pressing block and the lower hot pressing block is ≤0.04 mm.

[0039] The technical effects achieved by the above settings: For a hot pressing block with a surface flatness ≤0.04 mm, no imprints will be generated during hot pressing.

[0040] The beneficial effects of the present utility model are as follows:

[0041] 1. When picking and placing the stacked cores, the support mechanism can be adjusted in position through the moving mechanism to meet the requirements of picking and placing stacked cores of different sizes; when hot-pressing the stacked cores, the support mechanism moves through the moving mechanism to avoid the hot-pressing block, and the stacked cores are supported by the high-temperature resistant film to transfer heat to the stacked cores, avoiding the generation of imprints;

[0042] 2. Through the horizontal movement mechanism and the vertical movement mechanism, the position of the roller seat assembly can be adjusted in both the horizontal and vertical directions; the flexibility of the movement of the support mechanism is further improved by deploying four roller seat assemblies.

[0043] 3. The high-temperature resistant film adopts Mylar film, which has good heat preservation, mechanical flexibility, high transparency, good visual effect and long service life. Description of the Drawings

[0044] Figure 1 It is a schematic structural diagram of the stacked core picking and placing device of the present utility model;

[0045] Figure 2 It is a schematic structural diagram of the roller seat assembly of the stacked core picking and placing device of the present utility model;

[0046] Figure 3 It is a schematic diagram of the picking and placing state of the stacked core picking and placing device of the present utility model;

[0047] Figure 4 It is a schematic diagram of the hot-pressing state of the stacked core picking and hot-pressing device of the present utility model.

[0048] Reference Numerals:

[0049] H1, the first horizontal movement mechanism; H2, the second horizontal movement mechanism; S1, the first vertical movement mechanism; S2, the second vertical movement mechanism;

[0050] 1, the upper hot-pressing block; 2, the lower hot-pressing block; 3, the stacked core; 4, the high-temperature resistant film; 5, the fixed block; 6, the rotary clamping roller;

[0051] 7-1, the first motor; 8-1, the first motion module; 7-2, the second motor; 8-2, the second motion module;

[0052] 9-1, the first cylinder; 9-2, the second cylinder; 9-3, the third cylinder; 9-4, the fourth cylinder;

[0053] 10-1, the first slider; 10-2, the second slider; 10-3, the third slider; 10-4, the fourth slider;

[0054] 11-1, the first guide rail; 11-2, the second guide rail;

[0055] 12-1, First roller seat assembly; 12-2, Second roller seat assembly; 12-3, Third roller seat assembly; 12-4, Fourth roller seat assembly;

[0056] 12, Roller seat; 13, Outer shell; 14, Union nut; 15, Bearing. Detailed implementation mode

[0057] The present utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and cannot be used to limit the protection scope of the present utility model. Embodiment

[0058] As Figure 1 shown, the laminated core picking and feeding device of this embodiment includes an upper support mechanism, a lower support mechanism and a moving mechanism;

[0059] The upper support mechanism includes: the first roller seat assembly 12-1 and the third roller seat assembly 12-3;

[0060] The lower support mechanism includes: the second roller seat assembly 12-2 and the fourth roller seat assembly 12-4;

[0061] The moving mechanism includes: a first transverse movement mechanism H1, a second transverse movement mechanism H2, a first vertical movement mechanism S1 and a second vertical movement mechanism S2;

[0062] The first roller seat assembly 12-1 and the second roller seat assembly 12-2 are arranged on the first vertical movement mechanism S1, and the first vertical movement mechanism S1 is connected to the first transverse movement mechanism H1; the third roller seat assembly 12-3 and the fourth roller seat assembly 12-4 are arranged on the second vertical movement mechanism S2, and the second vertical movement mechanism S2 is connected to the second transverse movement mechanism H2; the first roller seat assembly 12-1 and the third roller seat assembly 12-3 are at the same height; the second roller seat assembly 12-2 and the fourth roller seat assembly 12-4 are at the same height; the first roller seat assembly 12-1 and the third roller seat assembly 12-3, as well as the second roller seat assembly 12-2 and the fourth roller seat assembly 12-4 are respectively used to connect the high-temperature resistant film 4;

[0063] The first transverse movement mechanism H1 includes a first motor 7-1 and a first movement module 8-1; the second transverse movement mechanism H2 includes a second motor 7-2 and a second movement module 8-2; the first movement module 8-1 is connected to the first vertical movement mechanism S1; the second movement module 8-2 is connected to the second vertical movement mechanism S2; the first motor 7-1 is driven through the first movement module 8-1 to drive the first vertical movement mechanism S1 to move transversely; the second motor 7-2 is driven through the second movement module 8-2 to drive the second vertical movement mechanism S2 to move transversely. The first movement module 8-1 and the second movement module 8-2 serve as transmission mechanisms, including a lead screw, a slider, and a connecting block. One end of the connecting block is connected to the vertical movement mechanism, and the other end is connected to the slider. The slider is rotatably connected to the lead screw, and the lead screw is connected to the output end of the motor. The motor controls the forward and reverse rotation of the lead screw, and the slider moves left or right on the lead screw, thereby controlling the first vertical movement mechanism S1 and / or the second vertical movement mechanism S2 to move left or right.

[0064] The first vertical movement mechanism S1 includes a first guide rail 11-1, a first slider 10-1, and a second slider 10-2; the first roller seat assembly 12-1 is slidably connected to the first guide rail 11-1 through the first slider 10-1, and the second roller seat assembly 12-2 is slidably connected to the first guide rail 11-1 through the second slider 10-2; the second vertical movement mechanism S2 includes a second guide rail 11-2, a third slider 10-3, and a fourth slider 10-4; the third roller seat assembly 12-3 is slidably connected to the second guide rail 11-2 through the third slider 10-4, and the fourth roller seat assembly 12-4 is slidably connected to the second guide rail 11-2 through the fourth slider 10-4. The first vertical movement mechanism S1 further includes a first cylinder 9-1 and a second cylinder 9-2. The first cylinder 9-1 is used to drive the first roller seat assembly 12-1 to move vertically, and the second cylinder 9-2 is used to drive the second roller seat assembly 12-2 to move vertically; the second vertical movement mechanism S2 further includes a third cylinder 9-3 and a fourth cylinder 9-4; the third cylinder 9-3 is used to drive the third roller seat assembly 12-3 to move vertically, and the fourth cylinder 9-4 is used to drive the fourth roller seat assembly 12-4 to move vertically.

[0065] For moving components such as movement modules and cylinders, limit sensors and corresponding hard limit devices need to be set to ensure that the corresponding mechanisms can move to effective and reasonable positions during the movement process.

[0066] Thus, the requirements for the transverse and vertical movement of the four roller seat assemblies can be met. Preferably, two rotating clamping rollers 6 are arranged on each roller seat assembly, and the two rotating clamping rollers 6 are arranged obliquely at a certain angle. The high-temperature resistant film 4 passes through the two rotating clamping rollers 6 in an S shape, and the two rotating clamping rollers 6 can fully expand the high-temperature resistant film 4. Embodiment

[0067] As Figure 2As shown in the figure, each roller seat assembly further includes: a roller seat 12, a housing 13, a union nut 14, and a bearing 15; both ends of the rotary clamping roller 6 are rotatably connected to the roller seat 12 through the union nut 14, the bearing 15 is arranged between the rotary clamping roller 6 and the roller seat 12, and the housing 13 is arranged outside the rotary clamping roller 6. The housing 13 is subjected to surface tea-colored super-hard anodizing treatment, and burrs on the surface need to be removed, sharp corners need to be chamfered, and the openings of surface small holes need to be chamfered and smoothly transitioned to avoid damaging the laminated core or the high-temperature resistant film during operation. Accordingly, the entire roller seat assembly is subjected to dynamic balance treatment. Embodiment

[0068] As Figure 3 shown, in the picking and feeding state of the laminated core picking and feeding device, both ends of the upper and lower layers of high-temperature resistant films 4 are respectively fixed through fixing blocks 5, and are respectively pressed against the upper and lower surfaces of the laminated core 3 by the first roller seat assembly 12-1 and the third roller seat assembly 12-3, and the second roller seat assembly 12-2 and the fourth roller seat assembly 12-4, and the laminated core 3 is clamped and then transferred to the hot pressing station. Embodiment

[0069] As Figure 4 shown, this embodiment provides a laminated core hot pressing device, including an upper hot pressing block 1 and a lower hot pressing block 2; and the laminated core picking and feeding device of the above embodiment; when the laminated core 3 is hot pressed, the first roller seat assembly 12-1 and the third roller seat assembly 12-3 are respectively moved to both sides of the upper hot pressing block 1, and the second roller seat assembly 12-2 and the fourth roller seat assembly 12-4 are respectively moved to both sides of the lower hot pressing block 2. At this time, the high-temperature resistant layer 4 located below the laminated core 3 supports the laminated core 3 through its own tension; the upper hot pressing block 1 and the lower hot pressing block 2 form a press fit on the laminated core 3 through the high-temperature resistant film 4, and the upper hot pressing block 1 and the lower hot pressing block 2 respectively transfer heat to the laminated core 3 through the high-temperature resistant film 4; the upper hot pressing block 1 and the lower hot pressing block 2 adopt an integral plate design, and the surface is sprayed with Teflon process. After grinding, the overall flatness needs to be guaranteed to be ≤0.04 mm; to avoid generating indentation. The high-temperature resistant film 4 is preferably a Mylar film, which has good heat preservation, mechanical flexibility, high transparency, good visual effect, and long service life.

[0070] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. At the same time, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. Also, in the drawings of the present utility model, the filling patterns are only for distinguishing layers and are not subject to any other limitations.

[0071] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A stacked core picking and delivering device, characterized in that: It comprises a high temperature resistant film (4), an upper supporting mechanism, a lower supporting mechanism and a moving mechanism, wherein the upper supporting mechanism and the lower supporting mechanism respectively support the high temperature resistant film (4), the upper supporting mechanism and the lower supporting mechanism are connected to the moving mechanism, and the moving mechanism is used to move the positions of the upper supporting mechanism and the lower supporting mechanism.

2. The stacked core picking and delivering device according to claim 1, characterized in that: The upper support mechanism comprises: a first roller seat assembly (12-1) and a third roller seat assembly (12-3); the lower support mechanism comprises: a second roller seat assembly (12-2) and a fourth roller seat assembly (12-4); the moving mechanism comprises: a first transverse movement mechanism (H1), a second transverse movement mechanism (H2), a first vertical movement mechanism (S1) and a second vertical movement mechanism (S2); the first roller seat assembly (12-1) and the second roller seat assembly (12-2) are arranged on the first vertical movement mechanism (S1), the first roller seat assembly (12-2) and the second roller seat assembly (12-4) are arranged on the first vertical movement mechanism (S1), ...2) and the second roller seat assembly (12-4) are arranged on the first vertical movement mechanism (S1), the first roller seat assembly (12-2) and the second roller seat assembly (12-4) are A vertical movement mechanism (S1) is connected to a first transverse movement mechanism (H1); the third roller seat assembly (12-3) and the fourth roller seat assembly (12-4) are arranged on the second vertical movement mechanism (S2), and the second vertical movement mechanism (S2) is connected to the second transverse movement mechanism (H2); the first roller seat assembly (12-1) and the third roller seat assembly (12-3) support a group of high-temperature resistant films (4), and the second roller seat assembly (12-2) and the fourth roller seat assembly (12-4) support another group of high-temperature resistant films (4).

3. The stacked core picking and delivering device according to claim 2, characterized in that: The first transverse movement mechanism (H1) comprises a first motor (7-1) and a first motion module (8-1); the second transverse movement mechanism (H2) comprises a second motor (7-2) and a second motion module (8-2); the first motion module (8-1) is connected to the first vertical movement mechanism (S1); the second motion module (8-2) is connected to the second vertical movement mechanism (S2); the first motor (7-1) is driven by the first motion module (8-1) to drive the first vertical movement mechanism (S1) to move transversely; the second motor (7-2) is driven by the second motion module (8-2) to drive the second vertical movement mechanism (S2) to move transversely.

4. The stacked core picking and delivering device according to claim 2, characterized in that: The first vertical movement mechanism (S1) comprises a first guide rail (11-1), a first slider (10-1), a second slider (10-2) and a first linear drive mechanism; the first roller seat assembly (12-1) is slidably connected to the first guide rail (11-1) via the first slider (10-1), and the second roller seat assembly (12-2) is slidably connected to the first guide rail (11-1) via the second slider (10-2); the first linear drive mechanism is used to drive the first roller seat assembly (12-1) and the second roller seat assembly (12-2) to vertically move; The second vertical movement mechanism (S2) comprises a second guide rail (11-2), a third slider (10-3), a fourth slider (10-4) and a second linear drive mechanism; the third roller seat assembly (12-3) is slidably connected to the second guide rail (11-2) via the third slider (10-4), and the fourth roller seat assembly (12-4) is slidably connected to the second guide rail (11-2) via the fourth slider (10-4); the second linear drive mechanism is used to drive the third roller seat assembly (12-3) and the fourth roller seat assembly (12-4) to move vertically.

5. The stacked core picking and delivering device according to claim 4, characterized in that: The first linear drive mechanism comprises a first cylinder (9-1) and a second cylinder (9-2); the first cylinder (9-1) is used to drive the first roller seat assembly (12-1) to move vertically, and the second cylinder (9-2) is used to drive the second roller seat assembly (12-2) to move vertically; the second linear drive mechanism comprises a third cylinder (9-3) and a fourth cylinder (9-4); the third cylinder (9-3) is used to drive the third roller seat assembly (12-3) to move vertically, and the fourth cylinder (9-4) is used to drive the fourth roller seat assembly (12-4) to move vertically.

6. The stacked core picking and delivering device according to claim 2, characterized in that: Each roller seat assembly comprises at least one rotating clamping roller (6).

7. The stacked core picking and delivering device according to claim 6, characterized in that: Each roller seat assembly has two rotating clamping rollers (6), and the two rotating clamping rollers (6) are arranged to be inclined at a certain angle.

8. The stacked core picking and delivering device according to claim 6, characterized in that: Each roller seat assembly further comprises: a roller seat (12), an outer shell (13), a cap (14) and a bearing (15); the two ends of the rotating clamping roller (6) are rotatably connected to the roller seat (12) via the caps (14), the bearing (15) is arranged between the rotating clamping roller (6) and the roller seat (12), and the outer shell (13) is arranged on the outside of the rotating clamping roller (6).

9. The stacked core picking and delivering device according to claim 8, characterized in that: The surface of the shell (13) is a smooth surface.

10. The stacked core picking and delivering device according to claim 8, characterized in that: The surface of the shell (13) is provided with a brown super-hard oxide layer.

11. The stacked core picking and delivering device according to claim 8, characterized in that: The surface of the shell (13) is provided with a plurality of holes, and the openings of the plurality of holes are all provided with chamfers.

12. The stacked core picking and delivering device according to claim 8, characterized in that: The surface of the shell (13) is subjected to a sharp corner chamfering treatment.

13. The stacked core picking and delivering device according to claim 1, characterized in that: The high temperature resistant film (4) is a Mylar film.

14. The stacked core picking and delivering device according to claim 1, characterized in that: Both ends of the high temperature resistant membrane (4) are fixed by means of fixing blocks (5).

15. A core stacking hot pressing device, comprising an upper hot pressing block (1) and a lower hot pressing block (2); characterized in that: It also includes a stacked core picking and delivering device as described in any one of claims 1-11.

16. The core stacking hot pressing device according to claim 15, characterized in that: The upper hot pressing block (1) and the lower hot pressing block (2) are both complete hot pressing blocks without gaps.

17. The core stacking hot pressing device according to claim 15, characterized in that: The surfaces of the upper hot pressing block (1) and the lower hot pressing block (2) are provided with a Teflon layer.

18. The core stacking hot pressing device according to claim 15, characterized in that: The surface flatness of the upper hot pressing block (1) and the lower hot pressing block (2) is ≤0.04 mm.

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