Multi-surface printing method of lithium battery

Abstract

The invention discloses a multi-surface printing method of a lithium battery, which comprises a transport device, a top printing module, a side printing module and a curing module, the transport device is provided with a jig, the jig is used for placing the lithium battery to be printed, the top printing module is arranged on the transport device, and the side printing module is arranged on the curing module. The top printing module is used for printing UV insulating ink on the bottom face of the lithium battery, the two side face printing modules are oppositely arranged and located on the two sides of the conveying device correspondingly, and the side face printing modules are used for printing UV insulating ink on the side faces of the lithium battery; the curing module is used for curing the UV insulating ink on the wall surface of the lithium battery; all the mechanisms are modularized, UV insulating ink is printed on the two sides of the printing equipment at the same time, the actual printing equipment length is shorter, the printing time can be effectively shortened by printing the two side walls at the same time, and the printing efficiency and the turnover rate of the lithium battery are improved.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery printing equipment, and in particular to a multi-side printing method for lithium batteries. Background Art

[0002] In the processing of the insulation layer of lithium batteries, in order to ensure the shear force and insulation of the insulation layer, it is generally necessary to print on multiple sides of the outer surface to ensure the stability of the lithium battery performance.

[0003] Existing printing methods generally use a printing device to print a single side. For example, in Chinese Patent 202411373700.5, in the process, S04, ink is printed on the to-be-printed area through a nozzle; S05, the ink on the to-be-printed area is photocured to form a coating film; S06, the printing area is image-positioned using a camera, and steps S04 and S05 are repeated at least once to thicken the coating film.

[0004] However, when using a single-sided printing method, the overall size of the equipment is large, and generally there are at least five processes, so its overall length is also long. At the same time, the total printing time corresponding to a single lithium battery will also be long, affecting the processing efficiency ratio. Summary of the Invention

[0005] The main purpose of the present invention is to propose a multi-sided printing method for lithium batteries, aiming to improve the existing lithium battery printing method, so as to achieve high-speed and efficient printing. At the same time, the various structural modules are designed to be applicable to lithium batteries of different sizes while improving processing efficiency.

[0006] To achieve the above object, the present invention provides a multi-side printing method for lithium batteries, comprising a printing device,

[0007] The printing device comprises:

[0008] A transport device, wherein the transport device is provided with a jig for placing the lithium battery to be printed;

[0009] A top printing module, the top printing module being provided on the transport device and being used for printing UV insulating ink on the bottom surface of the lithium battery;

[0010] Side printing modules, the side printing modules are provided in two and oppositely arranged and located on both sides of the transport device, and the side printing modules are used to print UV insulating ink on the side of the lithium battery;

[0011] The side printing module is provided with at least one group;

[0012] A curing module, which is used to cure UV insulating ink on the wall surface of the lithium battery;

[0013] Printing method using printing device:

[0014] S1: Place the lithium battery to be printed on the fixture manually or by a robot;

[0015] S2: The transport device drives the jig to move to the top printing module, and then the top printing module prints insulating ink on the bottom surface of the non-electrode end of the lithium battery;

[0016] S3: When the bottom surface printing is completed, the transport device drives the lithium battery to move to the side printing module, and the side printing module can print on two or four opposite sides of the lithium battery;

[0017] S4: After the side of the lithium battery is printed, the transport device moves the lithium battery printed with insulating ink to the curing module and cures the UV insulating ink;

[0018] S5: The transport device drives the lithium battery to print at least two insulating layers in a predetermined direction.

[0019] In the actual design, by modularizing each mechanism and printing UV insulating ink on both sides of the printing device at the same time, the actual printing device length is shorter. Printing two side walls at the same time can effectively shorten the printing time and improve the printing efficiency and turnover rate of lithium batteries.

[0020] At the same time, synchronizing the lithium battery and the printing equipment at an equal rate can effectively improve the processing accuracy and efficiency, ensure the rhythm of spacing processing, and improve the turnover rate of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 Schematic diagram of the transport device;

[0023] Figure 3 A three-dimensional diagram of the top printing module Figure 1 ;

[0024] Figure 4 A three-dimensional diagram of the top printing module Figure 2 ;

[0025] Figure 5 A three-dimensional diagram of the side printing module Figure 1 ;

[0026] Figure 6 A three-dimensional diagram of the side printing module Figure 2 ;

[0027] Figure 7 Schematic diagram of the curing module;

[0028] Figure 8 This is the flow chart of S51;

[0029] Figure 9 This is a plan view of S51;

[0030] Figure 10 This is the flow chart of S52;

[0031] Figure 11 This is a plan view of S52.

[0032] In the figure,

[0033] 1 is a transport device, 10 is a fixture, 11 is a lithium battery, 12 is a horizontal drive guide rail, 13 is a horizontal drive slider, 14 is a horizontal drive screw pair, 15 is a rotating device,

[0034] 2 is the top printing module, 20 is the gantry, 21 is the first transverse guide rail, 22 is the first transverse slider, 23 is the first transverse screw pair,

[0035] 3 is the side printing module, 31 is the first longitudinal movable frame, 32 is the first vertical movable frame,

[0036] 4 is a curing module, 41 is a top UV device, 42 is a side UV device,

[0037] 5 is the final curing device,

[0038] 61 is a first printing device, and 62 is a second printing device. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] like Figures 1 to 11 As shown, a multi-side printing method for lithium batteries includes a printing device,

[0043] The printing device comprises:

[0044] A transport device 1 is provided with a jig 10 for placing lithium batteries 11 to be printed;

[0045] A top printing module 2, which is provided on the transport device 1 and is used to print UV insulating ink on the bottom surface of the lithium battery 11;

[0046] Side printing modules, the side printing modules are provided in two and oppositely arranged and respectively located on both sides of the transport device 1, and the side printing modules are used to print UV insulating ink on the side of the lithium battery 11;

[0047] The side printing module is provided with at least one group;

[0048] A curing module, which is used to cure UV insulating ink on the wall surface of the lithium battery 11;

[0049] Printing method using printing device:

[0050] S1: Place the lithium battery 11 to be printed on the fixture 10 manually or by a robot;

[0051] S2: The transport device 1 drives the jig 10 to move onto the top printing module 2, and then the top printing module 2 prints insulating ink on the bottom surface of the non-electrode end of the lithium battery 11;

[0052] S3: When the bottom surface printing is completed, the transport device 1 drives the lithium battery 11 to move to the side printing module, and the side printing module can print on two or four opposite sides of the lithium battery 11;

[0053] S4: After the side of the lithium battery 11 is printed, the transport device 1 drives the lithium battery 11 printed with the insulating ink to move to the curing module, and cures the UV insulating ink;

[0054] S5: The transport device 1 drives the lithium battery 11 to print at least two insulating layers in a predetermined direction.

[0055] In the actual design, by modularizing each mechanism and printing UV insulating ink on both sides of the printing device at the same time, the actual length of the printing device is shorter, and printing two side walls at the same time can effectively shorten the printing time and improve the printing efficiency and turnover rate of the lithium battery 11.

[0056] Specifically, the transport device 1 drives the lithium battery 11 to pass through the top printing module 2, the side printing module and the curing module in sequence at a predetermined speed. Unlike the existing printing method, the existing equipment adopts the method of stopping printing during operation, and the use of a constant speed printing method can effectively improve the turnover rate, while realizing orderly transportation and reducing the time gap caused by stopping.

[0057] In an embodiment of the present invention, a final curing device 5 is further provided at the end of the S5; a rotating device is provided between the transport device 1 and the jig 10 (of course, the rotating device can also be turned over by setting a clamping device at the loading position, wherein the present application can reduce the process of clamping and turning the lithium battery compared with the previous scheme), and the rotating device is used to drive the lithium battery 11 to rotate, and then the side printing module and the curing module respectively print the insulating ink and cure the four sides of the lithium battery 11, thereby completing the processing of the insulating surface of the lithium battery 11.

[0058] In the embodiment of the present invention, when the top printing module 2, the side printing module and the curing module are provided as a group;

[0059] In S51 , the transport device 1 drives the fixture 10 to move back and forth along its length direction.

[0060] In the S51, the insulating ink surface is three-layered;

[0061] During the first printing, the transport device 1 drives the fixture 10 to move in the positive direction, driving the acceleration to 800 mm / s and the acceleration to 5 m / s. 2 , which takes 0.16s; then it passes 2040mm at a constant speed, completing the first printing and the first pre-curing, which takes 2.55s; then it decelerates to 0, with a deceleration of 5m / s 2 , took 0.16s, total time taken was 2.87s;

[0062] During the second printing, the transport device 1 drives the fixture 10 to move in the opposite direction, driving the acceleration to 800 mm / s and the acceleration to 5 m / s.2 , which takes 0.16s; then it passes 2040mm at a constant speed, completing the first printing and the first pre-curing, which takes 2.55s; then it decelerates to 0, with a deceleration of 5m / s 2 , took 0.16s, total time taken was 2.87s;

[0063] During the third printing, the transport device 1 drives the fixture 10 to move in the positive direction, driving the acceleration to 800 mm / s and the acceleration to 5 m / s. 2 , which takes 0.16s; then it passes through 2040mm at a constant speed, completing the first printing and the first pre-curing, which takes 2.55s; the total time is 2.71s; continue to pass through the final curing at a speed of 800mm / s, and the printing time of the three sides of the battery cell is 8.45s.

[0064] In the embodiment of the present invention, when there are three groups of top printing modules 2, side printing modules and curing modules;

[0065] In S52 , the transport device 1 drives the fixture 10 to move unidirectionally along its length direction.

[0066] In the above S52, the insulating ink surface is three-layered.

[0067] Transport device 1 is driven to accelerate to 800 mm / s, acceleration 5 m / s 2 , which takes 0.16s; then it passes 5000mm at a constant speed, completing three prints and three pre-curings, which takes 6.25s; then it decelerates to 0, with a deceleration of 5m / s 2 , took 0.16s, and the total time was 6.57s.

[0068] Specifically, compare the action flow of Option 2 and Option 1:

[0069] 1. Compared with Solution 2, S51 saves two sets of printing modules and one set of pre-curing modules, which has a great cost advantage;

[0070] Option 2, S52, has a shorter printing cycle, higher production capacity and faster efficiency.

[0071] In the embodiment of the present invention, the side printing modules of S51 are provided in two groups and are spaced apart, so that printing on four sides can be achieved even without a rotating device.

[0072] In the embodiment of the present invention, the transport device 1 includes a horizontal driving guide rail 12, a horizontal driving slider 13 slidably mounted on the horizontal driving guide rail 12, and a horizontal screw pair 14 for driving the horizontal driving slider 13 to move;

[0073] The horizontal driving guide rail 12 is in a closed loop structure or a straight line structure, wherein the closed loop structure can effectively reduce the loading and unloading of the jig 10, thereby effectively improving the printing efficiency.

[0074] In the embodiment of the present invention, the top printing module 2 includes a first gantry 20, a first transverse movable frame provided on the first gantry, and a first printing device. The printing surface of the first printing device is arranged downward. At the same time, the first transverse movable frame can be arranged to achieve position adjustment according to different products, thereby improving the efficiency and applicability of top surface printing.

[0075] In the embodiment of the present invention, the first transverse movable frame includes a first transverse guide rail 21 provided on the top of the gantry, a first transverse slider 22 slidably mounted on the first transverse guide rail 21, and a first transverse screw rod pair 23 for driving the first transverse slider to move;

[0076] The side printing module includes a first longitudinal movable frame 31 and a first vertical movable frame 32 provided on the first longitudinal movable frame 31. The first vertical movable frame 32 is provided with a second printing device. The printing surface of the printing device is vertically arranged and faces the direction of the transport device 1.

[0077] The first longitudinal movable frame 31 includes a first longitudinal guide rail 311, a longitudinal slider 312 slidably mounted on the longitudinal guide rail, and a longitudinal screw pair 313 for driving the longitudinal slider;

[0078] The first vertical movable frame 32 includes a vertical guide rail 321 provided on a longitudinal slider, a vertical slider 322 slidably mounted on the vertical guide rail, and a vertical screw rod pair 323 for driving the vertical slider.

[0079] In the embodiment of the present invention, the curing device and the final curing device 5 have the same structure, including a top ultraviolet device 41 and two side ultraviolet devices 42.

[0080] The side ultraviolet device can adjust the relative height and lateral position. Specifically, the side ultraviolet device includes a vertically arranged synchronous drive device, a vertical guide rail, a vertical slider, and a lateral adjustment track provided on the vertical slider. The side ultraviolet device is provided on the lateral adjustment track, and can be adjusted manually or by a rotary motor to achieve adjustment of the predetermined stroke.

[0081] Specifically, by adjusting different positions, the printing and curing of the insulating ink surface of lithium batteries 11 of different sizes can be satisfied, thereby improving the applicability of the equipment and reducing production costs.

[0082] The printing device is a digital printing device, and the printing device is provided with a plurality of nozzles.

[0083] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A multi-side printing method for lithium batteries, characterized in that: Including printing equipment, The printing device comprises: A transport device, wherein the transport device is provided with a jig for placing the lithium battery to be printed; A top printing module, the top printing module being provided on the transport device and being used for printing UV insulating ink on the bottom surface of the lithium battery; Side printing modules, the side printing modules are provided in two and oppositely arranged and located on both sides of the transport device, and the side printing modules are used to print UV insulating ink on the side of the lithium battery; The side printing module is provided with at least one group; A curing module, which is used to cure UV insulating ink on the wall surface of the lithium battery; Printing method using printing device: S1: Place the lithium battery to be printed on the fixture manually or by a robot; S2: The transport device drives the jig to move to the top printing module, and then the top printing module prints insulating ink on the bottom surface of the non-electrode end of the lithium battery; S3: When the bottom surface printing is completed, the transport device drives the lithium battery to move to the side printing module, and the side printing module can print on two or four opposite sides of the lithium battery; S4: After the side of the lithium battery is printed, the transport device moves the lithium battery printed with insulating ink to the curing module and cures the UV insulating ink; S5: The transport device drives the lithium battery to print at least two insulating layers in a predetermined direction.

2. The multi-side printing method of a lithium battery according to claim 1, wherein: The transport device drives the lithium battery to pass through the top printing module, the side printing module and the curing module in sequence at a predetermined speed.

3. The multi-side printing method of a lithium battery according to claim 1, wherein: The end of the S5 is also provided with a final curing device; a rotating device is provided between the transport device and the jig, and the rotating device is used to drive the lithium battery to rotate, and then the side printing module and the curing module respectively print insulating ink and cure on the four sides of the lithium battery.

4. The multi-side printing method of a lithium battery according to claim 2, wherein: When the top printing module, the side printing module and the curing module are provided as a set; In S51, the transport device drives the jig to move back and forth along its length direction.

5. The multi-side printing method of a lithium battery according to claim 4, wherein: In the S51, the insulating ink surface is three-layered; During the first print, the transport device drives the fixture to move in the positive direction, driving the acceleration to 800mm / s and 5m / s 2 , which takes 0.16s; then it passes through 2040mm at a constant speed, completing the first printing and the first pre-curing, which takes 2.55s; Then decelerate to 0, deceleration 5m / s 2 , took 0.16s, total time taken was 2.87s; During the second print, the transport device drives the fixture to move in the opposite direction, driving the acceleration to 800mm / s and 5m / s 2 , which takes 0.16s; then it passes through 2040mm at a constant speed, completing the first printing and the first pre-curing, which takes 2.55s; Then decelerate to 0, deceleration 5m / s 2 , took 0.16s, total time taken was 2.87s; During the third print, the transport device drives the fixture to move in the positive direction, driving the acceleration to 800mm / s and 5m / s 2 , which takes 0.16s; then it passes through 2040mm at a constant speed, completing the first printing and the first pre-curing, which takes 2.55s; The total printing time was 2.71 seconds. The final curing was continued at a speed of 800 mm / s, and the printing time for completing the three sides of the battery cell was 8.45 seconds.

6. The multi-side printing method of a lithium battery according to claim 2, wherein: When there are three sets of top printing modules, side printing modules and curing modules; In S52, the transport device drives the jig to move unidirectionally along its length direction.

7. The multi-side printing method of a lithium battery according to claim 6, wherein: In the above S52, the insulating ink surface is three-layered. The transport device is driven to accelerate to 800 mm / s and 5 m / s 2 , which takes 0.16s; then it passes through 5000mm at a constant speed, completing three prints and three pre-curings, which takes 6.25s; Then decelerate to 0, deceleration 5m / s 2 , took 0.16s, and the total time was 6.57s.

8. The multi-side printing method of a lithium battery according to claim 1, wherein: The side printing modules of the S51 are provided in two groups and are arranged at intervals.

9. The multi-side printing method of a lithium battery according to claim 1, wherein: The transport device comprises a horizontal driving guide rail, a horizontal driving slider slidably mounted on the horizontal driving guide rail, and a horizontal screw pair for driving the horizontal driving slider to move; The horizontal driving guide rail is in a closed loop structure or a straight line structure.

10. The multi-side printing method of a lithium battery according to claim 1, wherein: The top printing module includes a first gantry, a first transverse movable frame provided on the first gantry, and a first printing device, wherein the printing surface of the first printing device is provided downward; The first transverse moving frame includes a first transverse guide rail provided on the top of the gantry, a first transverse slider slidably mounted on the first transverse guide rail, and a first transverse screw pair for driving the first transverse slider to move; The side printing module includes a first longitudinal movable frame and a first vertical movable frame provided on the first longitudinal movable frame, wherein the first vertical movable frame is provided with a second printing device, and the printing surface of the printing device is vertically arranged and faces the direction of the transport device; The first longitudinal movable frame includes a first longitudinal guide rail, a longitudinal slider slidably mounted on the longitudinal guide rail, and a longitudinal screw pair for driving the longitudinal slider; The first vertical movable frame includes a vertical guide rail provided on the longitudinal slider, a vertical slider slidably mounted on the vertical guide rail, and a vertical screw pair for driving the vertical slider; The curing device and the final curing device have the same structure, including a top ultraviolet device and two side ultraviolet devices. The side UV devices are adjustable in relative height and lateral position.

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