High-speed lamination table with multiple pressing knives
By setting up staggered multi-pressure knife assemblies on the stacking table, and using a linear drive module and lifting cylinder to drive the pressure knives, the problems of electrode displacement and indentation during high-speed stacking are solved, achieving high-precision alignment and quality assurance of the cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN LIHANG AUTOMATION TECH CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-14
AI Technical Summary
Existing lamination pressing structures and controls cannot effectively press the electrode sheets during high-speed lamination, resulting in electrode sheet displacement or indentation, which affects the alignment and quality of the battery cells.
A high-speed stacking stage with multiple pressure knives is designed. The left and right pressure knife assemblies are each equipped with four pressure knives, which are arranged in an alternating manner. The pressure knives are driven by a linear drive module and a lifting cylinder to perform the closing and pulling actions, ensuring that there is sufficient pressure to press the electrode sheets tightly during the movement of the diaphragm.
It effectively prevents the electrode from shifting during the separator movement, ensuring the alignment and quality of the cell, adapting to a high-speed stacking cycle of 0.7s, and suitable for stacking operations with long tab sizes.
Smart Images
Figure CN224123369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery production technology, and in particular to a high-speed stacking stage with multiple pressure knives. Background Technology
[0002] Current lamination technology is advancing rapidly, and while pursuing speed, the precision control of battery cells is also extremely stringent. The lamination pressing blade needs to press the already stacked battery cells on the lamination table during the separator's movement. As the lamination speed of lamination machines increases to 0.5s / pcs, the existing structure and control of the lamination pressing blade can no longer meet the requirements. Currently, lamination tables typically have four lamination pressing blades. To ensure the pressing blades can keep up with the separator folding action, one set of pressing blades needs to be raised in advance, so that only two pressing blades on the lamination table are pressing the electrode sheets during the separator's folding movement. If the pressure of the pressing blades is insufficient, and the already stacked battery cells on the lamination table are not pressed tightly, the electrode sheets will be pulled during the separator's movement, causing electrode sheet displacement and directly affecting the alignment of the battery cells. If the pressure of the pressing blades is too high, the pressing blades will leave indentations on the electrode sheets, affecting the quality of the battery cells. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a high-speed stacking stage with multiple pressure knives.
[0004] This utility model provides a high-speed stacking stage with multiple pressure knives, including a stacking stage, a left pressure knife assembly, and a right pressure knife assembly. The stacking stage is provided with the left pressure knife assembly and the right pressure knife assembly along the diaphragm folding direction. The stacking stage is provided with a first side and a second side along the diaphragm width direction. The left pressure knife assembly includes two first knife holders respectively provided on the first side and the second side, each first knife holder being provided with a first pressure knife and a second pressure knife. The right pressure knife assembly includes two second knife holders respectively provided on the first side and the second side, each second knife holder being provided with a third pressure knife and a fourth pressure knife. The first side and the second side are arranged with the first pressure knife, the third pressure knife, the second pressure knife, and the fourth pressure knife in sequence along the diaphragm folding direction.
[0005] In some embodiments, the first tool holder on the first side is located outside the second tool holder on the first side, and the first tool holder is provided with a first clearance groove to avoid the third pressing tool; the first tool holder on the second side is located inside the second tool holder on the second side, and the second tool holder is provided with a second clearance groove to avoid the second pressing tool.
[0006] In some embodiments, the lengths of the first pressing blade and the second pressing blade on the first side are less than the lengths of the first pressing blade and the second pressing blade on the second side; the lengths of the third pressing blade and the third pressing blade on the first side are greater than the lengths of the third pressing blade and the fourth pressing blade on the second side.
[0007] In some embodiments, the left pressure knife assembly further includes a first linear drive module and a first lifting cylinder. The first linear drive module is provided with two first slides. The first linear drive module synchronously drives the two first slides through positive and negative thread screws. The first slides fix the first lifting cylinder through a first bracket. The drive end of the first lifting cylinder is connected to the first tool holder.
[0008] In some embodiments, the first tool holder includes a first fixed plate and a first connecting block, the drive end of the first lifting cylinder is fixedly connected to the first fixed plate, the first connecting block is fixed to one side of the first fixed plate and extends toward the second tool holder, and the first pressing knife and the second pressing knife are respectively fixed to the upper end surfaces of the first fixed plate and the first connecting block.
[0009] In some embodiments, the right pressure knife assembly further includes a second linear drive module and a second lifting cylinder. The second linear drive module is provided with two second slides. The second linear drive module synchronously drives the two second slides through positive and negative thread screws. The second slides fix the second lifting cylinder through a second bracket. The drive end of the second lifting cylinder is connected to the second knife holder.
[0010] In some embodiments, the second tool holder includes a second fixed plate and a second connecting block, the drive end of the second lifting cylinder is fixedly connected to the second fixed plate, the second connecting block is fixed to one side of the second fixed plate and extends toward the first tool holder, and the third pressing knife and the fourth pressing knife are respectively fixed to the upper end surfaces of the second fixed plate and the second connecting block.
[0011] In some embodiments, a base is also included, a lifting seat is provided above the base, a lifting platform is provided above the lifting seat, a stacking table is mounted on the lifting platform, a diaphragm correction assembly is provided on the stacking platform, and a left pressure knife assembly and a right pressure knife assembly are respectively provided on both sides of the lifting seat.
[0012] In some embodiments, a first lifting assembly and a first guide rail are provided between the base and the lifting seat, and the first lifting assembly drives the lifting seat, the stacking table, the left pressing knife assembly, and the right pressing knife assembly to move vertically along the first guide rail; a second lifting assembly and a second guide rail are provided between the lifting seat and the lifting table, and the second lifting assembly drives the lifting table and the stacking table to move vertically along the second guide rail; a third lifting assembly and a third guide rail are provided between the lifting seat and the left pressing knife assembly, and the third lifting assembly drives the left pressing knife assembly to move vertically along the third guide rail; a fourth lifting assembly and a fourth guide rail are provided between the lifting seat and the right pressing knife assembly, and the fourth lifting assembly drives the right pressing knife assembly to move vertically along the fourth guide rail.
[0013] In some embodiments, the diaphragm correction assembly includes a correction motor, a correction suction plate, and a diaphragm guide roller. The correction motor is located on one side of the stacking table, the correction suction plate is connected to the correction motor, the diaphragm guide roller is located on the outside of the correction suction plate, and the correction motor drives the correction suction plate to move along the guide steps of the stacking table.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting four pressure knives on each of the left and right pressure knife assemblies, and on the first and second sides, the first and second pressure knives of the left pressure knife assembly and the third and fourth pressure knives of the right pressure knife assembly are staggered, so that when the left or right pressure knife assembly raises its respective pressure knife, there are four pressure knives on the stacking table to press the cell, so that the electrode can be subjected to sufficient pressure, avoid the electrode from shifting during the movement of the separator, and ensure the alignment of the cell. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the multi-blade high-speed stacking stage according to an embodiment of this application.
[0016] Figure 2 This is an exploded structural diagram of the multi-blade high-speed stacking stage according to an embodiment of this application.
[0017] Figure 3 This is a top view of the multi-blade high-speed stacking stage according to an embodiment of this application.
[0018] Figure 4 This is a three-dimensional structural diagram of the base, lifting seat, and lifting platform according to an embodiment of this application.
[0019] Figure label:
[0020] 1. Stacking table; 11. First side; 12. Second side;
[0021] 2. Left pressure tool assembly; 21. First tool holder; 211. First fixing plate; 212. First connecting block; 213. First clearance groove; 22. First pressure tool; 23. Second pressure tool; 24. First linear drive module; 25. First lifting cylinder; 26. First slide table; 27. First bracket; 28. First slide rail; 29. Positive and negative thread screw;
[0022] 3. Right pressure knife assembly; 31. Second knife holder; 311. Second fixing plate; 312. Second connecting block; 313. Second clearance groove; 32. Third pressure knife; 33. Fourth pressure knife; 34. Second linear drive module; 35. Second lifting cylinder; 36. Second slide table; 37. Second bracket; 38. Second slide rail;
[0023] 4. Base; 41. Lifting seat; 42. Lifting platform;
[0024] 5. First lifting assembly; 51. First guide rail;
[0025] 6. Second lifting assembly; 61. Second guide rail;
[0026] 7. Third lifting assembly; 71. Third guide rail;
[0027] 8. Fourth lifting assembly; 81. Fourth guide rail;
[0028] 9. Diaphragm alignment component; 91. Alignment motor; 92. Alignment suction plate; 93. Diaphragm guide roller. Detailed Implementation
[0029] The specific embodiments of this utility model are described with reference to the accompanying drawings.
[0030] refer to Figure 1 The figure shows a three-dimensional structural diagram of the multi-pressure knife high-speed stacking table 1. From top to bottom, the stacking table 1, the lifting table 42, the lifting seat 41 and the base 4 are arranged in sequence. There are a total of eight pressure knives on both sides of the stacking table 1, with four pressure knives on each side.
[0031] refer to Figures 1 to 4 A multi-blade high-speed stacking stage 1 includes a stacking stage 1, a left blade assembly 2, and a right blade assembly 3. The stacking stage 1 is provided with the left blade assembly 2 and the right blade assembly 3 along the diaphragm folding direction. The stacking stage 1 is provided with a first side 11 and a second side 12 along the diaphragm width direction. The left blade assembly 2 includes two first blade holders 21 respectively provided on the first side 11 and the second side 12. Each first blade holder 21 is provided with a first blade 22 and a second blade 23. The right blade assembly 3 includes two second blade holders 31 respectively provided on the first side 11 and the second side 12. Each second blade holder 31 is provided with a third blade 32 and a fourth blade 33. The first blade 22, the third blade 32, the second blade 23, and the fourth blade 33 are arranged sequentially along the diaphragm folding direction on both the first side 11 and the second side 12.
[0032] The multi-blade high-speed stacking stage 1 of this application has four blades on each of the left blade assembly 2 and the right blade assembly 3. On the first side 11 and the second side 12, the first blade 22 and the second blade 23 of the left blade assembly 2 and the third blade 32 and the fourth blade 33 of the right blade assembly 3 are staggered. This ensures that when the left blade assembly 2 or the right blade assembly 3 raises its respective blade, there are four blades on the stacking stage 1 to press the cell tightly. This allows the electrode to be subjected to sufficient pressure, preventing the electrode from shifting during the movement of the separator and ensuring the alignment of the cell.
[0033] In order to make the first pressing knife 22, the second pressing knife 23, the third pressing knife 32, and the fourth pressing knife 33 alternately arranged, in this embodiment, reference is made to Figure 1The first tool holder 21 on the first side 11 is located outside the second tool holder 31 on the first side 11, and the first tool holder 21 is provided with a first clearance groove 213 to avoid the third pressing tool 32; the first tool holder 21 on the second side 12 is located inside the second tool holder 31 on the second side 12, and the second tool holder 31 is provided with a second clearance groove 313 to avoid the second pressing tool 23.
[0034] Understandably, this arrangement, with the first tool holder 21 and the second tool holder 31 staggered and positioned on the inner and outer sides respectively, ensures that the first pressing tool 22, the second pressing tool 23, the third pressing tool 32, and the fourth pressing tool 33 are staggered. The first and second clearance slots ensure that the first tool holder 21 and the second tool holder 31 will not interfere with each other, and that the first pressing tool 22, the second pressing tool 23, the third pressing tool 32, and the fourth pressing tool 33 will not interfere with each other. The distance between the first tool holder 21 on the first side 11 and the second tool holder 31 on the second side 12 is the same as the distance between the second tool holder 31 on the first side 11 and the second tool holder 31 on the second side 12, which facilitates control and ensures synchronization.
[0035] To ensure that each pressing blade presses onto the electrode sheet for the same length, in this embodiment, reference is made to... Figure 1 and Figure 3 The lengths of the first pressing knife 22 and the second pressing knife 23 on the first side 11 are less than the lengths of the first pressing knife 22 and the second pressing knife 23 on the second side 12; the lengths of the third pressing knife 32 and the third pressing knife 33 on the first side 11 are greater than the lengths of the third pressing knife 32 and the fourth pressing knife 33 on the second side 12.
[0036] Understandably, with this configuration, the first knife holder 21 on the first side 11 and the second knife holder 31 on the second side 12 are both located on the outermost side, far from the stacking table 1, while the first knife holder 21 on the second side 12 and the second knife holder 31 on the first side 11 are both located on the inner side, close to the stacking table 1. By designing the lengths of the first pressing knife 22 and the second pressing knife 23 on the first side 11 to be smaller than those on the second side 12, and designing the lengths of the third pressing knife 32 and the third pressing knife 33 on the first side 11 to be larger than those on the second side 12, the length of each pressing knife pressed on the electrode remains the same, ensuring that the pressure of each pressing knife on the electrode is the same, thus preventing electrode displacement or indentation.
[0037] In order to drive the first tool holder 21 to move, in this embodiment, refer to Figure 2The left pressure knife assembly 2 also includes a first linear drive module 24 and a first lifting cylinder 25. The first linear drive module 24 is provided with two first slides 26. The first linear drive module 24 drives the two first slides 26 synchronously through the positive and negative thread screws 29. The first slides 26 fix the first lifting cylinder 25 through the first bracket 27. The drive end of the first lifting cylinder 25 is connected to the first knife holder 21.
[0038] Understandably, with this configuration, a first slide rail 28 is positioned above the first linear drive module 24, two first slide tables 26 are mounted on the first slide rail 28, and two first tool holders 21 are respectively mounted on the two first slide tables 26 via two first brackets 27. The first linear drive module 24 synchronously drives the two first slide tables 26 and the two first tool holders 21 to move along the first slide rail 28 via positive and negative thread screws 29, so that the two first tool holders 21 move synchronously relative to each other or towards each other, completing the infeed and retraction actions of the first pressing tool 22 and the second pressing tool 23.
[0039] In order to install the first pressure knife 22 and the second pressure knife 23, in this embodiment, refer to Figure 2 The first tool holder 21 includes a first fixed plate 211 and a first connecting block 212. The driving end of the first lifting cylinder 25 is fixed to the first fixed plate 211. The first connecting block 212 is fixed to one side of the first fixed plate 211 and extends toward the second tool holder 31. The first pressing knife 22 and the second pressing knife 23 are respectively fixed to the upper end surfaces of the first fixed plate 211 and the first connecting block 212.
[0040] Understandably, with this configuration, the first pressing blade 22 and the second pressing blade 23 are respectively installed on the upper surfaces of the first fixed plate 211 and the first connecting block 212, so that the first pressing blade 22 and the second pressing blade 23 are installed at the same height. The first fixed plate 211 is connected to the first lifting cylinder 25, and the first lifting cylinder 25 drives the first pressing blade 22 and the second pressing blade 23 to move in the vertical direction, thereby completing the lifting and pressing actions of the first pressing blade 22 and the second pressing blade 23.
[0041] In order to drive the second tool holder 31 to move, in this embodiment, refer to Figure 2 The right pressure knife assembly 3 also includes a second linear drive module 34 and a second lifting cylinder 35. The second linear drive module 34 is provided with two second slides 36. The second linear drive module 34 drives the two second slides 36 synchronously through the positive and negative thread screws 29. The second slides 36 fix the second lifting cylinder 35 through the second bracket 37. The drive end of the second lifting cylinder 35 is connected to the second knife holder 31.
[0042] Understandably, with this configuration, a second slide rail 38 is positioned above the second linear drive module 34, two second slide tables 36 are mounted on the second slide rail 38, and two second tool holders 31 are mounted on the two second slide tables 36 respectively via two second brackets 37. The second linear drive module 34 synchronously drives the two second slide tables 36 and the two second tool holders 31 to move along the second slide rail 38 via positive and negative thread screws 29, so that the two second tool holders 31 move synchronously relative to each other or towards each other, completing the infeed and retraction actions of the third tool pressing 32 and the fourth tool pressing 33.
[0043] In order to install the third pressure knife 32 and the fourth pressure knife 33, in this embodiment, refer to Figure 2 The second cutter holder 31 includes a second fixing plate 311 and a second connecting block 312. The driving end of the second lifting cylinder 35 is fixed to the second fixing plate 311. The second connecting block 312 is fixed to one side of the second fixing plate 311 and extends towards the first cutter holder 21. The third pressing cutter 32 and the fourth pressing cutter 33 are respectively fixed to the upper end surfaces of the second fixing plate 311 and the second connecting block 312.
[0044] Understandably, with this configuration, the third pressing knife 32 and the fourth pressing knife 33 are respectively installed on the upper surfaces of the second fixing plate 311 and the second connecting block 312, so that the installation height of the third pressing knife 32 and the fourth pressing knife 33 is the same. The second fixing plate 311 is connected to the second lifting cylinder 35, and the second lifting cylinder 35 drives the third pressing knife 32 and the fourth pressing knife 33 to move in the vertical direction, thereby completing the lifting and pressing actions of the third pressing knife 32 and the fourth pressing knife 33.
[0045] It should be further explained that the first linear drive module 24 of the left pressure knife assembly 2 and the second linear drive module 34 of the right pressure knife assembly 3 use linear motors as power sources. The stroke of the pressure knife during closing and withdrawing is ≤90mm, which can meet the 0.7s high-speed stacking cycle and can be adapted to the stacking operation of all tab sizes with long opening and closing strokes of the pressure knife.
[0046] In order to install the stacking stage 1, the left pressure knife assembly 2, and the right pressure knife assembly 3, in this embodiment, refer to Figure 4 The multi-pressure knife high-speed stacking table 1 also includes a base 4, a lifting seat 41 is provided above the base 4, a lifting platform 42 is provided above the lifting seat 41, the stacking table 1 is installed on the lifting platform 42, a diaphragm correction assembly 9 is provided on the stacking table 1, and the left pressure knife assembly 2 and the right pressure knife assembly 3 are respectively provided on both sides of the lifting seat 41.
[0047] Understandably, with this setup, the weight of the stacking table 1 is supported by the base 4, the lifting seat 41 is movably mounted on the base 4, the lifting table 42, the left pressing knife assembly 2 and the right pressing knife assembly 3 are mounted on the top of the lifting seat 41, the stacking table 1 is mounted on the lifting table 42, and the diaphragm correction assembly 9 is mounted on one side of the stacking table 1. The structure is reasonable and facilitates the folding of the diaphragm, placement of the electrode sheets, and the knife-pulling and knife-lifting actions of the left pressing knife assembly 2 and the right pressing knife assembly 3.
[0048] In order to drive the stacking stage 1, the left pressure knife assembly 2, and the right pressure knife assembly 3 to rise and fall, in this embodiment, refer to Figure 4 A first lifting component 5 and a first guide rail 51 are provided between the base 4 and the lifting seat 41. The first lifting component 5 drives the lifting seat 41, the stacking table 1, the left pressing knife component 2, and the right pressing knife component 3 to move vertically along the first guide rail 51. A second lifting component 6 and a second guide rail 61 are provided between the lifting seat 41 and the lifting table 42. The second lifting component 6 drives the lifting table 42 and the stacking table 1 to move vertically along the second guide rail 61. A third lifting component 7 and a third guide rail 71 are provided between the lifting seat 41 and the left pressing knife component 2. The third lifting component 7 drives the left pressing knife component 2 to move vertically along the third guide rail 71. A fourth lifting component 8 and a fourth guide rail 81 are provided between the lifting seat 41 and the right pressing knife component 3. The fourth lifting component 8 drives the right pressing knife component 3 to move vertically along the fourth guide rail 81.
[0049] Understandably, with this setup, after the last negative electrode sheet is stacked, the first lifting component 5 drives the lifting platform 41 to rise to the unloading station for unloading the battery cell. The stacking table 1, the left pressing knife component 2, and the right pressing knife component 3 rise together with the lifting platform 41. After unloading, they descend to the stacking station for stacking. During the stacking process, before placing each electrode sheet, the second lifting component 6 drives the lifting platform 42 and the stacking platform 1 to descend by one sheet thickness. At the same time, the left pressing knife component 2, which needs to hold the battery cell down, descends synchronously by one sheet thickness under the drive of the third lifting component 7. The right pressing knife assembly 3 performs the actions of pulling out and lifting the knife. After placing one electrode sheet, the right pressing knife assembly 3 is lowered by one sheet thickness under the action of the fourth lifting assembly 8, while simultaneously performing the actions of closing and pressing the knife. Then, when placing the next electrode sheet, the stacking table 1 and the right pressing knife assembly 3 are lowered by one sheet thickness in sync, and the left pressing knife assembly 2 performs the actions of pulling out and lifting the knife. After placing the next electrode sheet, the left pressing knife assembly 2 is lowered by one sheet thickness in sync under the action of the fourth lifting assembly 8, while simultaneously performing the actions of closing and pressing the knife. This cycle is repeated to complete the Z-stacking operation of the battery cell.
[0050] In order to correct the diaphragm deviation, in this embodiment, reference is made to... Figure 2 and Figure 4The diaphragm correction assembly 9 includes a correction motor 91, a correction suction plate 92, and a diaphragm guide roller 93. The correction motor 91 is located on one side of the stacking table 1. The correction suction plate 92 is connected to the correction motor 91. The diaphragm guide roller 93 is located on the outside of the correction suction plate 92. The correction motor 91 drives the correction suction plate 92 to move along the guide steps of the stacking table 1.
[0051] Understandably, with this setup, when the cells are stacked and then unloaded, the unloading robot extends into the stacking table 1 to pick up the cells. All the pressing blades simultaneously lift and pull out, and the unloading robot moves the cells out of the stacking table 1. After pulling a section of the diaphragm, the alignment suction plate 92 holds the diaphragm in place. The alignment motor 91 drives the alignment suction plate 92 and the alignment guide roller to adjust the position of the diaphragm and perform alignment. After alignment is completed, all the pressing blades simultaneously close and press down, pressing the diaphragm firmly onto the stacking table 1. At the same time, the diaphragm is cut, completing one cell.
[0052] The multi-blade high-speed stacking stage 1 of this application embodiment has four pressure blades crossed on both sides of the stacking stage 1, for a total of eight pressure blades. Each time, four pressure blades of the left pressure blade assembly 2 or the right pressure blade assembly 3 are lifted, and four more pressure blades on the stacking stage 1 press the electrode sheet tightly, so that the electrode sheet can be subjected to sufficient pressure, avoid the electrode sheet from shifting during the movement of the separator, and ensure the alignment of the battery cell.
[0053] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A high-speed stacking stage with multiple pressure knives, characterized in that, The device includes a stacking table, a left pressure knife assembly, and a right pressure knife assembly. The stacking table is provided with the left and right pressure knife assemblies along the diaphragm folding direction. The stacking table is provided with a first side and a second side along the diaphragm width direction. The left pressure knife assembly includes two first knife holders respectively provided on the first and second sides, each first knife holder being provided with a first pressure knife and a second pressure knife. The right pressure knife assembly includes two second knife holders respectively provided on the first and second sides, each second knife holder being provided with a third pressure knife and a fourth pressure knife. The first, third, second, and fourth pressure knives are arranged sequentially along the diaphragm folding direction on both the first and second sides.
2. The high-speed stacking stage with multiple pressure knives according to claim 1, characterized in that, The first tool holder on the first side is located outside the second tool holder on the first side, and the first tool holder is provided with a first clearance groove to avoid the third pressing tool; the first tool holder on the second side is located inside the second tool holder on the second side, and the second tool holder is provided with a second clearance groove to avoid the second pressing tool.
3. The high-speed stacking stage with multiple pressure knives according to claim 1, characterized in that, The lengths of the first and second pressing blades on the first side are less than the lengths of the first and second pressing blades on the second side; the lengths of the third and third pressing blades on the first side are greater than the lengths of the third and fourth pressing blades on the second side.
4. The high-speed stacking stage with multiple pressure knives according to claim 1, characterized in that, The left pressure knife assembly also includes a first linear drive module and a first lifting cylinder. The first linear drive module is provided with two first slides. The first linear drive module drives the two first slides synchronously through positive and negative thread screws. The first slides fix the first lifting cylinder through a first bracket. The drive end of the first lifting cylinder is connected to the first tool holder.
5. The high-speed stacking stage with multiple pressure knives according to claim 4, characterized in that, The first tool holder includes a first fixed plate and a first connecting block. The driving end of the first lifting cylinder is fixed to the first fixed plate. The first connecting block is fixed to one side of the first fixed plate and extends toward the second tool holder. The first pressing knife and the second pressing knife are respectively fixed to the upper end surfaces of the first fixed plate and the first connecting block.
6. The multi-blade high-speed stacking stage according to claim 1, characterized in that, The right pressure knife assembly also includes a second linear drive module and a second lifting cylinder. The second linear drive module is provided with two second slides. The second linear drive module synchronously drives the two second slides through positive and negative thread screws. The second slides fix the second lifting cylinder through a second bracket. The drive end of the second lifting cylinder is connected to the second knife holder.
7. The high-speed stacking stage with multiple pressure knives according to claim 6, characterized in that, The second tool holder includes a second fixed plate and a second connecting block. The driving end of the second lifting cylinder is fixed to the second fixed plate. The second connecting block is fixed to one side of the second fixed plate and extends toward the first tool holder. The third pressing knife and the fourth pressing knife are respectively fixed to the upper end surfaces of the second fixed plate and the second connecting block.
8. The high-speed stacking stage with multiple pressure knives according to claim 1, characterized in that, It also includes a base, a lifting seat is provided on the base, a lifting platform is provided on the lifting seat, a stacking table is installed on the lifting platform, a diaphragm correction assembly is provided on the stacking platform, and the left pressure knife assembly and the right pressure knife assembly are respectively provided on both sides of the lifting seat.
9. The high-speed stacking stage with multiple pressure knives according to claim 8, characterized in that, A first lifting assembly and a first guide rail are provided between the base and the lifting seat. The first lifting assembly drives the lifting seat, the stacking table, the left pressing knife assembly, and the right pressing knife assembly to move vertically along the first guide rail. A second lifting assembly and a second guide rail are provided between the lifting seat and the lifting table. The second lifting assembly drives the lifting table and the stacking table to move vertically along the second guide rail. A third lifting assembly and a third guide rail are provided between the lifting seat and the left pressing knife assembly. The third lifting assembly drives the left pressing knife assembly to move vertically along the third guide rail. A fourth lifting assembly and a fourth guide rail are provided between the lifting seat and the right pressing knife assembly. The fourth lifting assembly drives the right pressing knife assembly to move vertically along the fourth guide rail.
10. The high-speed stacking stage with multiple pressure knives according to claim 8, characterized in that, The diaphragm correction assembly includes a correction motor, a correction suction plate, and a diaphragm guide roller. The correction motor is located on one side of the stacking table, the correction suction plate is connected to the correction motor, and the diaphragm guide roller is located on the outside of the correction suction plate. The correction motor drives the correction suction plate to move along the guide steps of the stacking table.