Z-shaped lamination device with automatic waste discharge function

Abstract

The utility model discloses a Z-shaped lamination device with an automatic waste discharge function. The Z-shaped lamination device comprises a lamination table, a lamination manipulator, a lamination knife pressing mechanism and a detection camera for detecting pole pieces, the lamination manipulator can move along the X axis, the Y axis and the Z axis, the lamination manipulator comprises a lamination base, a middle suction plate and side suction mechanisms located on the two sides of the middle suction plate, and each side suction mechanism comprises a side suction plate, a side suction base, a side suction plate lifting driving air cylinder and a side suction plate rotating driving air cylinder; the lamination pressing knife mechanism comprises a pressing knife, a pressing knife lifting driving air cylinder capable of driving the pressing knife to ascend and descend and a pressing knife translation driving unit capable of driving the pressing knife to translate in the X direction, the pressing knife lifting driving air cylinder drives the pressing knife to ascend and descend, and the pressing knife translation driving unit drives the pressing knife to translate in the X direction. According to the utility model, NG pole pieces in the lamination process are automatically discharged on line in real time, and new pole pieces are supplemented to ensure that battery cells laminated each time are qualified products, so that the cost is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery production, and more specifically relates to a Z-type stacking device with an automatic waste discharge function. Background Art

[0002] During the stacking process, the battery cell requires multiple electrodes (including positive and negative electrodes) and multiple separators to be arranged one by one. During the stacking process of positive and negative electrodes and separators, there will be a CCD alignment detection system to monitor the position of the electrodes and separators in real time, and calculate the overhang of the positive and negative electrodes after each stacking, the distance of the separator covering the electrodes, and determine the NG electrodes. The disadvantage of the existing technology is that during the stacking process, the electrodes with excessive overhang cannot be discharged, but continue to stack, make a whole battery cell, and discharge it at the back end after marking, resulting in cost waste and reduced production efficiency.

[0003] That is, when Overhang detects a NG electrode, it will not stop the production of the battery cell, but mark the information of the battery cell and discharge it at the back end. This method mainly fails to solve the impact of NG electrode discharge on the battery cell being produced, because when the NG electrode is detected, if it is not fixed in the battery cell being produced, directly taking out the NG electrode by the robot will inevitably cause the position of the battery cell being produced to change, thus causing the defect of the entire battery cell. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a Z-type stacking device with an automatic waste discharge function, which can automatically discharge NG pole pieces in the stacking process in real time and online, and add new pole pieces to ensure that each stacked battery cell is a qualified product, thereby saving costs and improving production efficiency.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: the utility model provides a Z-type lamination device with automatic waste discharge function, including a lamination table, a lamination manipulator, a lamination knife pressing mechanism and a detection camera for detecting pole pieces;

[0006] The stacking robot can move along the XYZ three axes, and the stacking robot includes a stacking seat, an intermediate suction plate arranged on the stacking seat, and side suction mechanisms located on both sides of the intermediate suction plate. Each of the side suction mechanisms includes a side suction plate, a side suction seat, a side suction plate lifting drive cylinder, and a side suction plate rotation drive cylinder. One end of the side suction plate rotation drive cylinder is rotationally connected to the side suction seat, and the other end is rotationally connected to one end of the stacking seat. The power output end of the side suction plate lifting drive cylinder fixes the side suction plate, and the side suction plate lifting drive cylinder is installed on the side suction plate;

[0007] The lamination pressing knife mechanism comprises a pressing knife, a pressing knife lifting driving cylinder capable of driving the pressing knife to lift and lower, and a pressing knife translation driving unit capable of driving the pressing knife to translate along the X direction. The pressing knife is lifted and lowered by the pressing knife lifting driving cylinder, and is translated along the X direction by the pressing knife translation driving unit.

[0008] Furthermore, the end of the pressing blade is a wedge-shaped thin plate.

[0009] Furthermore, the press knife translation drive unit includes a servo motor, a bidirectional screw rod and a nut. The servo motor drives the bidirectional threaded screw rod connection, and the nut is mounted on the bidirectional screw rod. The servo motor drives the bidirectional screw rod to rotate and drive the corresponding nut to translate, thereby realizing the translation of the press knife.

[0010] Furthermore, the side suction plate is provided with a vacuum suction cup, and the vacuum suction cup is a suction cup with a buffer spring.

[0011] Furthermore, the buffer stroke of the vacuum suction cup is 10 mm.

[0012] Furthermore, the Z-type lamination device also includes a correction table for correcting the pole pieces and an NG box for placing NG products.

[0013] Specifically, the stacking robot is driven to move in the X direction by the X-direction driving module, is driven to move in the Y direction by the Y-direction driving module, and is driven to move in the Z direction by the Z-direction driving module.

[0014] The beneficial effects of the utility model are:

[0015] The utility model reasonably arranges the stacking manipulator and the stacking knife mechanism, so that when a NG pole piece is produced, the side suction plate pulls up the two ends of the NG pole piece and folds them at a certain angle, the knife enters and presses the battery cell under production to prevent it from shaking, and the stacking manipulator takes away the NG pole piece. Therefore, the NG pole piece can be discharged as soon as it is produced, and the next pole piece can be placed, and the stacking can continue, and finally a qualified battery cell can be completed, thereby avoiding the scrapping of the entire battery cell, saving the raw materials for making the battery cell, including the positive and negative pole pieces and the diaphragm, and at the same time, the yield and efficiency of the equipment are improved, which will produce huge economic benefits.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0019] Figure 3 It is a structural schematic diagram of the lamination manipulator of the utility model;

[0020] Figure 4 This is a front view of the lamination robot of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the lamination robot and lamination knife pressing mechanism of the utility model;

[0022] Figure 6 yes Figure 5 A partial enlarged view of part B;

[0023] The reference numerals are as follows:

[0024] Lamination table 1;

[0025] Lamination robot 2, lamination seat 21, middle suction plate 22, side suction mechanism 23, side suction plate 231, vacuum suction cup 2311, side suction seat 232, side suction plate lifting drive cylinder 233, side suction plate rotation drive cylinder 234, Y-direction drive module 24, Z-direction drive module 25;

[0026] Lamination pressing knife mechanism 3, pressing knife 31, pressing knife lifting driving cylinder 32, pressing knife translation driving unit 33, pressing knife seat 34;

[0027] Detection camera 4;

[0028] Correction station 5;

[0029] NG box 6;

[0030] The folding angles α on both sides of the pole piece, the pole piece 10 , and the battery cell 20 in process. DETAILED DESCRIPTION

[0031] The following is a specific embodiment of the present invention, and those skilled in the art can easily understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented in other different ways, that is, different modifications and changes can be made without departing from the scope disclosed by the present invention.

[0032] Embodiment: A Z-type lamination device with automatic waste discharge function, such as Figures 1 to 6 As shown, it includes a lamination table 1, a lamination robot 2, a lamination knife pressing mechanism 3 and a detection camera 4 for detecting pole pieces;

[0033] The stacking robot can move along the XYZ three axes, and the stacking robot includes a stacking seat 21, an intermediate suction plate 22 arranged on the stacking seat, and side suction mechanisms 23 located on both sides of the intermediate suction plate. Each of the side suction mechanisms 23 includes a side suction plate 231, a side suction seat 232, a side suction plate lifting drive cylinder 233, and a side suction plate rotation drive cylinder 234. One end of the side suction plate rotation drive cylinder is rotatably connected to the side suction seat, and the other end is rotatably connected to one end of the stacking seat. The power output end of the side suction plate lifting drive cylinder fixes the side suction plate, and the side suction plate lifting drive cylinder is installed on the side suction plate.

[0034] The lamination pressing knife mechanism 3 includes a pressing knife 31, a pressing knife lifting driving cylinder 32 capable of driving the pressing knife to lift and lower, and a pressing knife translation driving unit 33 capable of driving the pressing knife to translate along the X direction. The pressing knife is lifted and lowered by the pressing knife lifting driving cylinder, and is translated along the X direction by the pressing knife translation driving unit.

[0035] In this embodiment, the end of the pressing knife is a wedge-shaped thin plate, so as to better insert the pressing knife between the topmost electrode sheet 10 and the battery cell 20 under preparation and press the battery cell under preparation.

[0036] In the present embodiment, the knife pressing translation driving unit comprises a servo motor, a bidirectional lead screw (referring to the left and right sections of the lead screw being provided with threads in opposite spiral directions) and a nut, wherein the servo motor drives the lead screw of the bidirectional thread to be connected, and the nut is sleeved on the bidirectional lead screw. The lamination knife pressing mechanism also comprises a knife pressing seat 34, wherein the knife pressing seat is fixed to the nut, and the knife pressing lifting driving cylinder is installed on the knife pressing seat. The servo motor drives the bidirectional lead screw to rotate and drive the corresponding nut to translate, thereby realizing the translation of the knife pressing seat and finally realizing the translation of the knife pressing. This design structure enables the translation of the lamination knife pressing mechanism on the left and right sides to be realized by adopting a servo motor. However, it is not limited to this, and of course two groups of knife pressing translation driving units (i.e., two groups of servo motors drive) can also be adopted, and each group of knife pressing translation driving units drives the knife pressing seat on one side to translate.

[0037] In this embodiment, the side suction plate is provided with a vacuum suction cup 2311, and the vacuum suction cup is a suction cup with a buffer spring. The flipping action is completed by the vacuum suction cup, and the vacuum suction cup is spring-buffered, such as a buffer stroke of 10mm. During the flipping process of the pole piece, the pole piece will apply tension to the vacuum suction cup, and the vacuum suction cup spring is compressed to ensure that there is no relative movement with the pole piece, thereby ensuring the continuity of the vacuum and the pole piece is not damaged by friction.

[0038] In this embodiment, the Z-type stacking device further includes a deflection correction table 5 for correcting the electrode sheet and an NG box 6 for placing NG products. Although the electrode sheet will be corrected and positioned on the deflection correction table before stacking, there will still be NG electrode sheets in the process of the stacking robot taking the electrode sheet from the deflection correction table to the stacking table for stacking. The purpose of the utility model is to eliminate the NG electrode sheets in this part in real time online to ensure that each stacked battery cell is a qualified product.

[0039] In this embodiment, the stacking robot is driven to move in the X direction by an X-direction drive module (not shown in the figure), driven to move in the Y direction by a Y-direction drive module 24 , and driven to move in the Z direction by a Z-direction drive module 25 .

[0040] The working principle and working process of the utility model are as follows:

[0041] After the pole piece is corrected on the deviation correction table, the stacking robot takes and places the material normally, and the middle suction plate and the side suction plates on both sides suck the pole piece at the same time. In the case of no NG pole piece, the left and right side suction plates remain horizontal and consistent with the middle suction plate to ensure the accuracy of pole piece picking; if the pole piece is placed, the detection camera of the stacking table detects that the pole piece is overhang (that is, out of tolerance), and after the detection NG alarm is issued, the left and right side suction plates will be pulled up by the side suction plate lifting drive cylinder (the pulling stroke is 5mm, for example), and then the side suction plate rotation drive cylinder will flip the side suction plate up and keep it at an angle of about 15° to the horizontal direction, that is, the folding angle α on both sides of the pole piece is about 15°;

[0042] After the pole piece is flipped, the press knife is driven by the press knife lifting drive cylinder and the press knife translation drive unit to enter between the folded pole piece and the battery cell in process, pressing the battery cell in process to ensure that the position of the battery cell in process does not change. Then the robot arm discharges the NG pole piece into the NG box to complete the discharge of the NG pole piece.

[0043] In the utility model, firstly, on the basis of pressing the electrode sheet with the middle suction plate, the two sides of the topmost NG electrode sheet are flipped up by a relatively small side suction plate device, and then the pressing knife can enter under the NG electrode sheet, and then press the battery cell under preparation, so as to ensure that the battery cell under preparation will not be affected when the stacking robot takes away the top NG electrode sheet. After the stacking robot puts down a electrode sheet, the pressing knife withdraws from the stacking table, and then comes in to press the electrode sheet, so as to continue stacking. In the utility model, the NG electrode sheet is discharged as soon as it is produced, and the next electrode sheet is placed, and stacking continues, and finally a qualified battery cell is completed, thereby avoiding the scrapping of the entire battery cell and saving the raw materials for making the battery cell, including positive and negative electrode sheets and diaphragms. At the same time, the yield and efficiency of the equipment are improved, which will produce huge economic benefits.

[0044] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A Z-type lamination device with automatic waste discharge function, characterized in that: It comprises a lamination platform (1), a lamination robot (2), a lamination knife pressing mechanism (3) and a detection camera (4) for detecting pole pieces; The stacking robot can move along the XYZ three axes, and comprises a stacking seat (21), an intermediate suction plate (22) arranged on the stacking seat, and side suction mechanisms (23) located on both sides of the intermediate suction plate. Each of the side suction mechanisms (23) comprises a side suction plate (231), a side suction seat (232), a side suction plate lifting drive cylinder (233), and a side suction plate rotation drive cylinder (234). One end of the side suction plate rotation drive cylinder is rotationally connected to the side suction seat, and the other end is rotationally connected to one end of the stacking seat. The power output end of the side suction plate lifting drive cylinder fixes the side suction plate, and the side suction plate lifting drive cylinder is installed on the side suction plate. The lamination knife pressing mechanism (3) comprises a knife pressing (31), a knife pressing lifting driving cylinder (32) capable of driving the knife pressing to lift and lower, and a knife pressing translation driving unit (33) capable of driving the knife pressing to translate along the X direction. The knife pressing is lifted and lowered by the knife pressing lifting driving cylinder, and is translated along the X direction by the knife pressing translation driving unit.

2. The Z-type lamination device with automatic waste discharge function according to claim 1, characterized in that: The end of the pressing knife is a wedge-shaped thin plate.

3. The Z-type lamination device with automatic waste discharge function according to claim 1, characterized in that: The press knife translation drive unit includes a servo motor, a bidirectional lead screw and a nut. The servo motor drives the bidirectional threaded lead screw connection, and the nut is sleeved on the bidirectional lead screw. The servo motor drives the bidirectional lead screw to rotate and drive the corresponding nut to translate, thereby realizing the translation of the press knife.

4. The Z-type lamination device with automatic waste discharge function according to claim 1, characterized in that: The side suction plate is provided with a vacuum suction cup (2311), and the vacuum suction cup is a suction cup with a buffer spring.

5. The Z-type lamination device with automatic waste discharge function according to claim 4, characterized in that: The buffer stroke of the vacuum suction cup is 10 mm.

6. The Z-type lamination device with automatic waste discharge function according to claim 1, characterized in that: The Z-type lamination device also includes a deflection correction table (5) for correcting the deflection of the pole pieces and an NG box (6) for placing NG products.

7. The Z-type lamination device with automatic waste discharge function according to claim 1, characterized in that: The lamination robot is driven to move along the X direction by an X direction driving module, driven to move along the Y direction by a Y direction driving module (24), and driven to move along the Z direction by a Z direction driving module (25).

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