High-speed marking device suitable for slitting small battery cell pole piece

Abstract

The utility model relates to a high-speed marking device suitable for slitting a small-sized battery cell pole piece, which belongs to the technical field of lithium battery production and comprises a cabinet and a cross rod, an air cylinder is arranged on the cabinet, and the cross rod is connected with a piston rod of the air cylinder through a displacement groove to realize vertical movement; a plurality of code spraying machines are arranged on the cross rod and are fixed through fixing clamps; the square wire duct is arranged above the cross rod and moves synchronously with the cross rod, and a connecting wire of the ink-jet printer penetrates through a round hole of the wire duct, so that the stability of equipment operation is ensured; a defect identification device, a synchronizer, a transition roller, a code spraying roller, a winding shaft and a pneumatic valve are also arranged on the cabinet, wherein the defect identification device adopts a CCD (Charge Coupled Device) visual inspection system; the device is compact in structure and high in adaptability, and marking precision and production efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery production, and in particular relates to a high-speed marking device suitable for cutting small-sized battery core pole pieces. Background Art

[0002] In the field of lithium battery manufacturing, especially in the production process of cylindrical battery cells, pole piece slitting is an important link. After the appearance inspection, the existing pole piece slitting section usually uses square label paper pasted on the edge to mark the bad pole piece, and then the reeling section scraps the bad pole piece in a single roll. However, this labeling method has obvious defects and shortcomings. The label paper is prone to breakage, distortion and falling off during the high-speed slitting process, which makes it difficult to identify bad pole pieces and increases the difficulty of production quality control. The label paper is attached to one side of the pole piece. As the reeling diameter increases, the diameters on both sides of the pole piece will be inconsistent, resulting in wavy edges, which will increase the scrap rate and even pose safety risks.

[0003] The prior art discloses an inkjet marking process for lithium battery pole pieces with publication number CN110116566A. The scheme provides an inkjet marking device for lithium battery pole pieces, involving multiple components such as an ink storage tank, a collecting bin and an atomization bin. However, the inkjet system of the device alone is relatively complex and prone to high failure rates, and is not suitable for the high-speed production requirements of small-sized battery cells, and also increases the difficulty of subsequent maintenance. Utility Model Content

[0004] The technical problem solved by the utility model is: to overcome the problems existing in the prior art and to provide a high-speed marking device suitable for cutting small-sized battery cell pole pieces.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model discloses a high-speed marking device suitable for cutting small-sized battery cell pole pieces, comprising a cabinet and a cross bar, wherein a cylinder is mounted on the cabinet, a displacement groove in a vertical direction is arranged in the middle of the cylinder, and the cross bar is fixedly connected to the piston rod of the cylinder through the displacement groove; a plurality of inkjet printers are mounted on the cross bar; a defect recognition device and a synchronizer are also mounted on the cabinet, wherein the defect recognition device is electrically connected to the synchronizer, and the synchronizer is electrically connected to the inkjet printer.

[0007] A plurality of fixing cards are evenly arranged on the cross bar, the fixing cards are sleeved on the outside of the cross bar, and the inkjet printer is fixedly connected to the cross bar through the fixing cards.

[0008] A wire groove is provided above the cross bar, the longitudinal section of which is square, and the wire groove is fixedly connected to the piston rod of the cylinder through a displacement groove to achieve synchronous displacement of the wire groove and the cross bar.

[0009] A round hole is provided on one side of the wire trough, and the connecting wire of the inkjet printer is inserted into the wire trough through the round hole.

[0010] Several transition rollers, inkjet rollers and reel-up shafts are also installed on the cabinet; the inkjet rollers are arranged directly below the inkjet printer, and the reel-up shaft is arranged at the lower right side of the inkjet printer.

[0011] A pneumatic valve is also installed on the cabinet, and the pneumatic valve is connected to the cylinder through an air pipe.

[0012] The defect recognition device adopts CCD visual detection system.

[0013] The utility model has the following beneficial effects:

[0014] The utility model has a small structure and compact design. More marking units can be installed in a limited space, and it is suitable for the production needs of battery cells of various specifications. The inkjet printer realizes vertical movement up and down through the cylinder, and can adapt to pole pieces of different thicknesses to ensure the accuracy and consistency of the marking position. The cylinder provides stable support and precise movement control, reducing mechanical vibration and deviation during the marking process. The synchronizer ensures the synchronization of the marking action and the movement of the pole piece, and improves the marking accuracy. At the same time, the use of quick-drying ink can improve the stability and reliability of the marking process. The overall modularization of the marking device facilitates the integration of the production line and realizes automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model.

[0016] Among them: 1. Cabinet; 2. Crossbar; 3. Cylinder; 4. Displacement slot; 5. Inkjet printer; 6. Defect detection device; 7. Synchronizer; 8. Fixed card; 9. Wire slot; 10. Transition roller; 11. Inkjet roller; 12. Reel; 13. Pneumatic valve. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, the high-speed marking device suitable for cutting small battery cell pole pieces described in the utility model includes a cabinet 1 and a cross bar 2, a cylinder 3 is installed on the cabinet 1, a vertical displacement groove 4 is provided in the middle position of the cylinder 3, and the cross bar 2 is fixedly connected to the piston rod of the cylinder 3 through the displacement groove 4; a plurality of inkjet printers 5 are installed on the cross bar 2; a defect recognition device 6 and a synchronizer 7 are also installed on the cabinet 1, the defect recognition device 6 is electrically connected to the synchronizer 7, and the synchronizer 7 is electrically connected to the inkjet printer 5.

[0018] A plurality of fixing clips 8 are evenly arranged on the cross bar 2 . The fixing clips 8 are sleeved on the outside of the cross bar 2 . The inkjet printer 5 is fixedly connected to the cross bar 2 via the fixing clips 8 .

[0019] A wire groove 9 is provided above the cross bar 2 . The longitudinal section of the wire groove 9 is square. The wire groove 9 is fixedly connected to the piston rod of the cylinder 3 through the displacement groove 4 , so that the wire groove 9 and the cross bar 2 can be displaced synchronously.

[0020] A round hole is provided on one side of the wire slot 9, and the connecting wire of the inkjet printer is inserted into the wire slot 9 through the round hole.

[0021] A plurality of transition rollers 10 , a coding roller 11 and a reel 12 are also installed on the cabinet 1 ; the coding roller 11 is arranged directly below the coding machine 5 , and the reel 12 is arranged at the lower right of the coding machine 5 .

[0022] A pneumatic valve 13 is also installed on the cabinet 1, and the pneumatic valve 13 is connected to the cylinder 3 through an air pipe.

[0023] The defect recognition device 6 adopts a CCD visual detection system.

[0024] Specifically, firstly, the lithium battery electrode is placed in the feed port of the slitting and marking equipment, and the electrode is prepared to be slitting; the electrode enters the slitting area through the transition roller 10 of the slitting and marking equipment, and the function of the transition roller 10 is to ensure that the electrode enters the slitting process smoothly; before the electrode is slitting, it needs to be inspected for appearance by the defect recognition device 6. If the defect recognition device 6 recognizes that there are defects on the electrode, the defect recognition device 6 will synchronize the signal with the inkjet printer 5 through the synchronizer 7. The defects that can be identified by the defect recognition device 6 mainly include scratches, wrinkles, metal leakage, bright spots, decarbonization, bubbling, and perforation. , black spots, bubbles and splices; the synchronizer 7 is electrically connected to the inkjet printer 5 to ensure that the marking action is synchronized with the movement of the electrode. When the above defects are detected, the inkjet printer 5 performs the coding action. The inkjet printer 5 uses quick-drying white ink to print a mark with a width of 12mm and a length of 5mm at the center of the defective electrode. The thickness of the ink is only 0.001mm, which does not affect the flatness of the electrode; the marked electrode passes through the transition roller 10 and the coding roller 11, and is finally reeled up by the reel 12. The defective electrode after marking will be scrapped as a single roll after identification in the subsequent winding section.

[0025] Specifically, the pneumatic valve 13 is connected to the cylinder 3 through an air pipe. The pneumatic valve 13 is provided with an up button and a down button, which correspond to the upper and lower positions of the cross bar 2 and the wire slot 9 respectively. When in the lower position, the inkjet printer 5 performs marking at a position 2-5 mm away from the electrode; the connecting line of the inkjet printer 5 passes through the round hole on the wire slot 9 into the wire slot 9 to avoid the interference of the cable on the equipment; the cylinder 3 is connected to the cross bar 2 and the wire slot 9 through a piston rod, and the two ends of the cross bar 2 and the wire slot 9 move up and down synchronously in the displacement slot 4 on the cylinder 3. On the one hand, it can adapt to electrodes of different thicknesses. On the other hand, when preparing to insert the electrode before cutting, the inkjet printer 5 can be lifted to the upper position to provide space for convenient insertion of the electrode.

[0026] Specifically, the length of the transition roller 10, the inkjet roller 11 and the winding shaft 12 is set to 650 mm. The above width allows eight inkjet printers 5 to be set up in each row to perform marking at the same time. At the same time, by adding four rows of inkjet printers 5, the number of markings required for the production of thirty-two electrodes after slitting can be achieved, meeting various needs for slitting and marking of small battery cell electrode production.

[0027] The descriptions of the above specific implementation modes are all for illustrating the technical solutions of the present utility model rather than limiting them.

Claims

1. A high-speed marking device suitable for cutting small battery cell pole pieces, comprising a cabinet (1) and a crossbar (2), characterized in that: The cabinet (1) is provided with a cylinder (3), a displacement slot (4) in a vertical direction is provided in the middle of the cylinder (3), and the cross bar (2) is fixedly connected to the piston rod of the cylinder (3) via the displacement slot (4); a plurality of inkjet printers (5) are installed on the cross bar (2); and a defect recognition device (6) and a synchronizer (7) are also installed on the cabinet (1), the defect recognition device (6) is electrically connected to the synchronizer (7), and the synchronizer (7) is electrically connected to the inkjet printer (5).

2. The high-speed marking device suitable for cutting small-sized battery cell pole pieces according to claim 1, characterized in that: A plurality of fixing clips (8) are evenly arranged on the cross bar (2), the fixing clips (8) are sleeved on the outside of the cross bar (2), and the inkjet printer (5) is fixedly connected to the cross bar (2) via the fixing clips (8).

3. The high-speed marking device suitable for cutting small-sized battery cell pole pieces according to claim 1, characterized in that: A wire groove (9) is provided above the cross bar (2), the longitudinal section of the wire groove (9) is square, and the wire groove (9) is fixedly connected to the piston rod of the cylinder (3) through a displacement groove (4), so as to achieve synchronous displacement of the wire groove (9) and the cross bar (2).

4. The high-speed marking device suitable for cutting small-sized battery cell pole pieces according to claim 3, characterized in that: A circular hole is provided on one side of the wire slot (9), and the connecting wire of the inkjet printer (5) passes through the circular hole and enters the wire slot (9).

5. The high-speed marking device suitable for cutting small-sized battery cell pole pieces according to claim 1, characterized in that: The cabinet (1) is also equipped with a plurality of transition rollers (10), a coding roller (11) and a reel (12); the coding roller (11) is arranged directly below the coding machine (5), and the reel (12) is arranged at the lower right of the coding machine (5).

6. The high-speed marking device suitable for cutting small-sized battery cell pole pieces according to claim 1, characterized in that: A pneumatic valve (13) is also installed on the cabinet (1), and the pneumatic valve (13) is connected to the cylinder (3) via an air pipe.

7. The high-speed marking device suitable for cutting small-sized battery cell pole pieces according to claim 1, characterized in that: The defect recognition device (6) adopts a CCD visual detection system.

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