Automatic identification and calibration method for secondary positioning of pole piece of lamination stacking machine

Abstract

The invention discloses an automatic identification and calibration method for secondary positioning of a pole piece of a lamination stacking machine, which comprises the following steps: a CCD (Charge Coupled Device) software system matched with a CCD camera can automatically analyze and calculate an image, shot by the CCD camera, of the pole piece placed on a pole piece correction platform, and the CCD software system automatically calculates the physical position of the pole piece placed on the pole piece correction platform; the CCD software compares the physical position of the pole piece in S5 with a calibrated standard position and calculates relative offset data of the pole piece in the X, Y and Z directions, and the CCD software system automatically transmits the calculated relative offset data of the pole piece in the X, Y and Z directions to the equipment control system; after receiving the offset data, the equipment control system controls an X-axis execution mechanism, a Y-axis execution mechanism and a Z-axis execution mechanism which are in driving fit with the pole piece correction platform, the pole piece placed on the pole piece correction platform is corrected to a standard position required by a lamination process through the X-axis execution mechanism, the Y-axis execution mechanism and the Z-axis execution mechanism, and secondary positioning of the pole piece is completed.

Description

Technical Field

[0001] The invention relates to the field of lamination machines, and in particular to an automatic identification and calibration method for secondary positioning of pole pieces of a lamination machine. Background Art

[0002] Lithium battery stacking machine is a device that replaces manual work to stack pole pieces and realizes the automated production of lithium batteries. Since the stacking between positive and negative pole pieces needs to be blocked by a diaphragm, and the stacking position between adjacent pole pieces must be consistent, usually before the pole pieces are stacked, the precise position of the pole pieces needs to be determined so that the next pole piece can be accurately covered on the previous pole piece. At present, CCD visual positioning is mostly used to place the pole piece on a correction platform driven by a stepper or servo motor, and the corresponding pole piece is flattened through the calibration platform, and then the camera is used to visually position the pole piece to complete the precise stacking of multiple pole pieces. In addition, this method only positions the pole piece once, resulting in a certain error in the positioning of the pole piece, which leads to the problem of deviation in the position of the positive and negative pole pieces during the pole piece stacking process. Therefore, a stacking machine pole piece secondary positioning automatic identification and calibration method is proposed. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0004] A lamination machine pole piece secondary positioning automatic identification and calibration method, comprising the following steps:

[0005] S1, taking out the electrode sheet to be laminated from the material box by the first manipulator;

[0006] S2, the first manipulator transports the electrode taken out from the material box to the electrode correction platform;

[0007] S3, the CCD camera above the pole piece correction platform takes a picture of the pole piece on the pole piece correction platform;

[0008] S4. The CCD software system matched with the CCD camera will automatically analyze and calculate the image taken by the CCD camera of the pole piece placed on the pole piece correction platform;

[0009] S5. The CCD software system automatically calculates the physical position of the pole piece on the pole piece calibration platform in the X, Y, and Z directions;

[0010] S6, CCD software will compare the physical position of the pole piece in the X, Y, and Z directions in S5 with the calibrated standard position and calculate the relative offset data of the pole piece in the X, Y, and Z directions;

[0011] S7, CCD software system automatically transmits the calculated relative offset data of the pole piece in the X, Y, and Z directions to the equipment control system;

[0012] S8, after receiving the offset data, the equipment control system controls the X, Y, and Z axis actuators that cooperate with the pole piece correction platform drive;

[0013] S9, correcting the pole piece placed on the pole piece correction platform to the standard position required by the lamination process through the X, Y, and Z axis actuators, and completing the secondary positioning of the pole piece;

[0014] S10, using the second manipulator to accurately take the pole piece after the secondary positioning and place it on the lamination table for lamination.

[0015] Preferably, it also includes a laminating machine pole piece secondary positioning automatic identification and calibration platform, and the laminating machine pole piece secondary positioning automatic identification and calibration platform includes a support frame, a lifting platform is horizontally arranged on the top of the support frame, and the lifting platform is lifted and lowered on the support frame, a frame is vertically arranged on the top of the lifting platform, and a top plate is horizontally arranged on the top of the frame, and the lifting platform, the frame and the top plate are assembled to form a pole piece correction platform.

[0016] Preferably, the top plate and the lifting platform 8 are parallel to each other and form an inner cavity, and a plurality of adsorption holes are evenly distributed on the top of the top plate 4, and the plurality of adsorption holes are connected with the inner cavity.

[0017] Preferably, a driving member is provided between the lifting platform and the support frame, and the driving member is vertically located at the top end inside the support frame, and a driving connection is established between the driving member and the lifting platform.

[0018] Preferably, the inner cavity is provided with a plurality of through tubes, and the plurality of through tubes are evenly and vertically distributed inside the inner cavity, one end of the plurality of through tubes are connected with a plurality of adsorption holes by pipelines, and the other end of the plurality of through tubes 7 passes through the lifting platform and is connected with an external vacuum equipment by pipelines.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the CCD camera above the pole piece correction platform takes a picture of the pole piece on the pole piece correction platform, and the CCD software system matched with the CCD camera automatically analyzes and calculates the image of the pole piece placed on the pole piece correction platform taken by the CCD camera, and the CCD software system automatically calculates the physical position of the pole piece in the X, Y, and Z directions on the pole piece correction platform, and the CCD software compares and calculates the physical position of the pole piece in the X, Y, and Z directions in S5 with the calibrated standard position and calculates the relative offset data of the pole piece in the X, Y, and Z directions, and the CCD software system automatically transmits the calculated relative offset data of the pole piece in the X, Y, and Z directions to the equipment control system, and after receiving the offset data, the equipment control system controls the X, Y, and Z axis actuators driving and cooperating with the pole piece correction platform, and corrects the pole piece placed on the pole piece correction platform to the standard position required by the lamination process through the X, Y, and Z axis actuators, and completes the secondary positioning of the pole piece, thereby solving the problem of positive and negative pole piece position deviation in the pole piece stacking process and enabling accurate stacking of multiple pole pieces.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an automatic identification and calibration platform for secondary positioning of pole pieces of a lamination machine;

[0023] Figure 2 The present invention is another structural schematic diagram of an automatic identification and calibration platform for secondary positioning of pole pieces of a lamination machine.

[0024] As shown in the figure: 1. support frame, 2. protection frame, 3. frame body, 4. top plate, 5. adsorption hole, 6. driving part, 7. through pipe, 8. lifting platform. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-2 In an embodiment of the present invention, a lamination machine pole piece secondary positioning automatic identification and calibration method comprises the following steps:

[0027] S1, taking out the electrode sheet to be laminated from the material box by the first manipulator;

[0028] S2, the first manipulator transports the electrode taken out from the material box to the electrode correction platform;

[0029] S3, the CCD camera above the pole piece correction platform takes a picture of the pole piece on the pole piece correction platform;

[0030] S4. The CCD software system matched with the CCD camera will automatically analyze and calculate the image taken by the CCD camera of the pole piece placed on the pole piece correction platform;

[0031] S5. The CCD software system automatically calculates the physical position of the pole piece on the pole piece calibration platform in the X, Y, and Z directions;

[0032] S6, CCD software will compare the physical position of the pole piece in the X, Y, and Z directions in S5 with the calibrated standard position and calculate the relative offset data of the pole piece in the X, Y, and Z directions;

[0033] S7, CCD software system automatically transmits the calculated relative offset data of the pole piece in the X, Y, and Z directions to the equipment control system;

[0034] S8, after receiving the offset data, the equipment control system controls the X, Y, and Z axis actuators that cooperate with the pole piece correction platform drive;

[0035] S9, correcting the pole piece placed on the pole piece correction platform to the standard position required by the lamination process through the X, Y, and Z axis actuators, and completing the secondary positioning of the pole piece;

[0036] S10, using the second manipulator to accurately take the pole piece after the secondary positioning and place it on the lamination table for lamination.

[0037] A method for automatic identification and calibration of the secondary positioning of the pole pieces of a laminating machine also includes an automatic identification and calibration platform for the secondary positioning of the pole pieces of a laminating machine, and the platform for automatic identification and calibration of the secondary positioning of the pole pieces of a laminating machine includes a support frame 1, a lifting platform 8 is horizontally arranged at the top of the support frame 1, and the lifting platform 8 is lifted and lowered on the support frame 1, a frame 3 is vertically arranged at the top of the lifting platform 8, and a top plate 4 is horizontally arranged at the top of the frame 3, and the lifting platform 8, the frame 3 and the top plate 4 are assembled to form a pole piece correction platform for the subsequent placement and correction of the pole pieces.

[0038] The top plate 4 and the lifting platform 8 are parallel to each other and form an inner cavity (not shown in the figure), and a plurality of adsorption holes 5 are evenly distributed on the top of the top plate 4, and the plurality of adsorption holes 5 are connected with the inner cavity, so that the plurality of adsorption holes 5 can be adsorbed when the pole piece is placed on the pole piece correction platform.

[0039] A driving member 6 is provided between the lifting platform 8 and the support frame 1 , and the driving member 6 is vertically located at the top of the support frame 1 , and a driving connection is established between the driving member 6 and the lifting platform 8 , so that the lifting platform 8 is driven to be lifted and lowered on the support frame 1 by the driving member 6 .

[0040] The inner cavity is provided with a plurality of through tubes 7, and the plurality of through tubes 7 are evenly and vertically distributed inside the inner cavity, one ends of the plurality of through tubes 7 are connected with a plurality of adsorption holes 5 by pipelines, and the other ends of the plurality of through tubes 7 pass through the lifting platform 8 and are connected with an external vacuum equipment by pipelines, so that the electrode placed on the electrode correction platform can be adsorbed.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A method for automatic identification and calibration of secondary positioning of pole pieces of a lamination machine, characterized in that: The following steps are involved: S1, taking out the electrode sheet to be laminated from the material box by the first manipulator; S2, the first manipulator transports the electrode taken out from the material box to the electrode correction platform; S3, the CCD camera above the pole piece correction platform takes a picture of the pole piece on the pole piece correction platform; S4. The CCD software system matched with the CCD camera will automatically analyze and calculate the image taken by the CCD camera of the pole piece placed on the pole piece correction platform; S5. The CCD software system automatically calculates the physical position of the pole piece on the pole piece calibration platform in the X, Y, and Z directions; S6, CCD software will compare the physical position of the pole piece in the X, Y, and Z directions in S5 with the calibrated standard position and calculate the relative offset data of the pole piece in the X, Y, and Z directions; S7, CCD software system automatically transmits the calculated relative offset data of the pole piece in the X, Y, and Z directions to the equipment control system; S8, after receiving the offset data, the equipment control system controls the X, Y, and Z axis actuators that cooperate with the pole piece correction platform drive; S9, correcting the pole piece placed on the pole piece correction platform to the standard position required by the lamination process through the X, Y, and Z axis actuators, and completing the secondary positioning of the pole piece; S10, using the second manipulator to accurately take the pole piece after the secondary positioning and place it on the lamination table for lamination.

2. The method for automatic identification and calibration of the secondary positioning of the pole piece of a lamination machine according to claim 1 is characterized in that: It also includes an automatic identification and calibration platform for secondary positioning of the pole pieces of a laminating machine, and the automatic identification and calibration platform for secondary positioning of the pole pieces of a laminating machine includes a support frame, a lifting platform is horizontally arranged on the top of the support frame, and the lifting platform is lifted and lowered on the support frame, a frame is vertically arranged on the top of the lifting platform, and a top plate is horizontally arranged on the top of the frame, and the lifting platform, the frame and the top plate are assembled to form a pole piece correction platform.

3. The method for automatic identification and calibration of the secondary positioning of the pole piece of a lamination machine according to claim 2 is characterized in that: The top plate and the lifting platform 8 are parallel to each other and form an inner cavity, and a plurality of adsorption holes are evenly distributed on the top of the top plate 4, and the plurality of adsorption holes are connected with the inner cavity.

4. The method for automatic identification and calibration of the secondary positioning of the pole piece of a lamination machine according to claim 2 is characterized in that: A driving member is arranged between the lifting platform and the support frame, and the driving member is vertically located at the top end inside the support frame, and a driving connection is established between the driving member and the lifting platform.

5. The method for automatic identification and calibration of the secondary positioning of the pole piece of a lamination machine according to claim 3 is characterized in that: The inner cavity is provided with a plurality of through tubes, and the plurality of through tubes are evenly and vertically distributed inside the inner cavity, one end of the plurality of through tubes are connected with a plurality of adsorption holes by pipelines, and the other ends of the plurality of through tubes 7 pass through the lifting platform and are connected with external vacuum equipment by pipelines.

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