Coating device

Abstract

The utility model discloses a coating device which comprises a transmission device used for transmitting a carrier and a spray head device used for spraying slurry on the carrier, the carrier is in a strip-shaped sheet shape, the transmission direction of the transmission device extends along the length direction of the carrier, and electrode slurry and insulating slurry are sequentially coated on the carrier along the width direction of the carrier. The coating device further comprises an ultraviolet curing lamp used for curing the insulating slurry, the illumination range of the ultraviolet curing lamp corresponds to the width of the insulating slurry, the ultraviolet curing lamp is arranged on the spray head device, and the spray head device can be arranged on one side of the conveying device in a sliding mode in the width direction of the carrier. In the coating device, the insulating slurry can be cured instantly through the ultraviolet curing lamp, so that the influence on the battery quality due to mutual permeation of the electrode slurry and the insulating slurry can be avoided. And the ultraviolet curing lamp can move relative to the transmission device along with the spray head device, so that the ultraviolet curing lamp can be adjusted according to the coating position of the insulating slurry, and the coating device can be suitable for various coating modes.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery production equipment technical field, concretely relates to a coating device. BACKGROUND

[0002] Lithium battery as a new energy battery, has work voltage high, specific capacity is high, charge and discharge life, no memory effect and so on. The existing square lithium battery manufacturing process mostly is to adopt coating blank, carries out winding after laser ear cutting. The traditional laser cutting generally adopts the mode of cutting foil directly in order to reduce dust, and 0.5~1mm foil blank area is reserved at the edge of material area, and metal particles will be sputtered at the blank position during cutting, and the current method is to coat insulating liquid at the edge of blank, that is, insulating liquid and positive electrode paste are coated at the same time, although good insulation protection effect can be achieved, but the insulating liquid and the positive electrode paste are easy to appear mutual penetration, and mutual penetration will cause the capacity of the battery to reduce. SUMMARY

[0003] The utility model discloses to the deficiency in prior art, provide a kind of coating device that mutual penetration problem of electrode paste and insulating paste can be avoided in coating process.

[0004] To achieve the above object, the technical scheme adopted by the utility model is:

[0005] A kind of coating device, including the transmission device for transmission carrier and the spray head device for spraying paste to the carrier, the carrier is strip-shaped sheet, the transmission direction of the transmission device extends along the length direction of the carrier, along the width direction of the carrier, electrode paste and insulating paste are sequentially coated on the carrier, the coating device further includes the ultraviolet curing lamp for solidifying the insulating paste, the illumination range of the ultraviolet curing lamp corresponds with the width of the insulating paste, the ultraviolet curing lamp is arranged on the spray head device, the spray head device can be slidably arranged on the side of the transmission device along the width direction of the carrier.

[0006] In some embodiments, a plurality of spray head devices are arranged on the side of the transmission device along the width direction of the carrier, and the plurality of spray head devices can be slidably arranged along the width direction of the carrier, and one ultraviolet curing lamp is fixedly arranged on each spray head device.

[0007] In some embodiments, the coating device further comprises a driving device for driving the spray head device to slide along the width direction of the carrier, the driving device comprising a screw rod rotatably arranged about its own axis and a connecting assembly connected between the screw rod and the spray head device, the connecting assembly comprising a nut threadedly engaged with the screw rod and movable along the extension direction of the screw rod, a first connecting rod and a second connecting rod, one end of the first connecting rod being fixedly arranged on the nut, one end of the second connecting rod being connected with the spray head device, and the other end of the first connecting rod being connected with the other end of the second connecting rod.

[0008] In some embodiments, the other end of the first connecting rod is detachably connected with the other end of the second connecting rod.

[0009] In some embodiments, one end of the second connecting rod is slidably connected with the spray head device, so that the first connecting rod is connected with or detached from the second connecting rod.

[0010] When the second connecting rod slides to the first position, the other end of the first connecting rod is fixedly connected with the other end of the second connecting rod; when the second connecting rod slides to the second position, the other end of the first connecting rod is detached from the other end of the second connecting rod.

[0011] In some embodiments, each of the spray head devices is connected with the screw rod through two sets of the connecting assemblies, when two of the second connecting rods in the spray head devices slide towards each other, both of the second connecting rods are in the second position; when two of the second connecting rods in the spray head devices slide away from each other, both of the second connecting rods are in the second position.

[0012] In some embodiments, the driving device further comprises an elastic member for automatically resetting the second connecting rod from the second position to the first position, a baffle is fixedly arranged on the spray head device, one end of the elastic member is arranged on the second connecting rod, and the other end of the elastic member is arranged on the baffle.

[0013] In some embodiments, the driving device further comprises a limiting member for keeping the second connecting rod in the second position, the limiting member is slidably arranged on the spray head device; when the second connecting rod is in the first position, the limiting member is located on one side of the second connecting rod; when the second connecting rod is in the second position, the limiting member is located on the other side of the second connecting rod and abuttingly engages with the second connecting rod.

[0014] In some embodiments, the limiting member is provided with a first inclined guiding surface, and the second connecting rod is provided with a second inclined guiding surface. When the second connecting rod moves from the first position to the second position, the first inclined guiding surface can abut against the second inclined guiding surface, thereby causing the limiting member to slide away from the sliding path of the second connecting rod.

[0015] In some embodiments, the UV curing lamp includes a lamp holder extending along the length direction of the carrier and a plurality of lamp beads spaced apart within the lamp holder along the length direction of the lamp holder. After the insulating slurry and the electrode slurry are coated on the carrier, the carrier moves forward from back to front, and the power of each lamp bead gradually increases, or the power of the lamp beads located at the rear is less than the power of the lamp beads located at the front.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: In the coating device of this utility model, electrode slurry and insulating slurry can be coated simultaneously. After coating, the insulating slurry can be cured instantly by UV curing lamp, thus avoiding interpenetration between the electrode slurry and the insulating slurry, which would affect the battery quality. Moreover, the nozzle device can move relative to the transmission device, thereby driving the UV curing lamp to move synchronously. This allows the UV curing lamp to be adjusted according to the coating position of the insulating slurry, making the coating device applicable to various coating methods and more versatile. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the coating apparatus in this embodiment (with the driving device removed);

[0018] Appendix Figure 2 This is a schematic diagram of the structure of the UV curing lamp in this embodiment;

[0019] Appendix Figure 3 This is a schematic diagram of the arrangement of the LED beads in the UV curing lamp within the lamp holder in this embodiment;

[0020] Appendix Figure 4 This is one of the perspective views of the drive device in this embodiment when the first link and the second link are connected;

[0021] Appendix Figure 5 This is a second perspective view of the drive device in this embodiment when the first link and the second link are connected;

[0022] Appendix Figure 6 This is one of the perspective views of the drive device in this embodiment when the first link and the second link are disengaged;

[0023] Appendix Figure 7This is the second perspective view of the drive device in this embodiment when the first link and the second link are disengaged;

[0024] Appendix Figure 8 This is a schematic diagram of the structure of the drive device in this embodiment when the second link is in the first position;

[0025] Appendix Figure 9 This is one of the structural schematic diagrams of the second link in the drive device of this embodiment when it changes from the first position to the second position;

[0026] Appendix Figure 10 This is the second schematic diagram of the structure of the second link in the drive device of this embodiment when it changes from the first position to the second position;

[0027] Appendix Figure 11 This is a schematic diagram of the structure of the drive device in this embodiment when the second link is in the second position.

[0028] The components are as follows: 1. Transmission device; 2. Nozzle device; 21. Guide rod; 22. Baffle; 23. Housing; 3. UV curing lamp; 311. Base frame; 312. First support frame; 313. Second support frame; 32. Lamp holder; 33. Lamp bead; 400. Carrier; 51. Lead screw; 52. Lead nut; 53. First connecting rod; 54. Second connecting rod; 541. Second inclined guide surface; 55. Elastic element; 56. Limiting element; 561. First inclined guide surface. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figure 1The coating device shown in the utility model comprises a transmission device 1, a spray head device 2 and an ultraviolet curing lamp 3.

[0032] The transmission device 1 is used for transmitting the carrier 400, the carrier 400 is in the form of a strip-shaped sheet, and the carrier 400 can be a metal foil. In this embodiment, the transmission device 1 adopts a transmission roller. The transmission direction of the transmission device 1 extends along the length direction of the carrier 400.

[0033] The spray head device 2 is arranged on one side of the transmission device 1, and the spray head device 2 is used for spraying the electrode paste and the insulating paste on the carrier 400. The electrode paste and the insulating paste coated by the spray head device 2 are sequentially arranged along the width direction of the carrier 400.

[0034] The ultraviolet curing lamp 3 provides ultraviolet light, so that the insulating paste is cured, thereby avoiding mutual penetration of the electrode paste and the insulating paste in the coating process, and thus affecting the quality of the battery. The ultraviolet curing lamp 3 is arranged on the spray head device 2, and the illumination range of the ultraviolet curing lamp 3 corresponds to the width of the insulating paste.

[0035] As shown in Figure 1 and Figure 2 , the ultraviolet curing lamp 3 comprises a lamp holder, a lamp holder 32 and a lamp bead 33. The lamp holder is arranged on the spray head device 2, the lamp holder 32 is fixedly arranged on the lamp holder, and the lamp bead 33 is arranged in the lamp holder 32.

[0036] The lamp holder comprises a base frame 311, a first support frame 312 and a second support frame 313. The base frame 311 extends along the up-down direction, and the lower end of the base frame 311 is arranged on the spray head device 2. One end of the first support frame 312 is rotatably connected to the upper end of the base frame 311, and the other end of the first support frame 312 is rotatably connected to one end of the second support frame 313. The lamp holder 32 is fixedly arranged at the other end of the second support frame 313.

[0037] As shown in Figures 1 to 3 , the lamp holder 32 extends along the length direction of the carrier 400, and the lamp bead 33 is arranged in the lamp holder 32 in a plurality of intervals along the length extension direction of the lamp holder 32. After the insulating paste and the electrode paste are sprayed on the carrier 400, the carrier 400 moves forward, from back to front, the power of each lamp bead 33 gradually increases, or the power of the lamp bead 33 located at the rear part is less than the power of the lamp bead 33 located at the front part. In this way, when the ultraviolet curing lamp 3 starts to provide light, the light intensity is not too strong to affect the performance of the insulating paste.

[0038] In this embodiment, the ultraviolet curing lamp 3 is fixedly arranged on the spray head device 2, the spray head device 2 is slidably arranged on one side of the conveying device 1 along the width direction of the carrier 400, and when the spray head device 2 slides relative to the conveying device 1, the ultraviolet curing lamp 3 is synchronously slid, so that the ultraviolet curing lamp 3 can be adjusted according to the coating position of the insulating paste, thereby making the coating device applicable to various coating modes and having wider applicability.

[0039] Along the width direction of the carrier 400, a plurality of spray head devices 2 can be arranged on one side of the conveying device 1 at intervals, and each spray head device 2 sprays electrode paste or insulating paste. The plurality of spray head devices 2 are slidably arranged along the width direction of the carrier 400, and each spray head device 2 is fixedly arranged with an ultraviolet curing lamp 3. By moving each spray head device 2, the ultraviolet curing lamp 3 arranged thereon is synchronously moved.

[0040] The coating device further comprises a driving device for driving the spray head device 2 to slide along the width direction of the carrier 400.

[0041] As shown in Figures 4 to 7 , the driving device comprises a lead screw 51 and a connecting assembly. The lead screw 51 extends along the width direction of the carrier 400, and the lead screw 51 is rotatably arranged about its own axis. The connecting assembly is arranged corresponding to each spray head device 2, and the connecting assembly is connected between the lead screw 51 and each spray head device 2.

[0042] Each connecting assembly comprises a nut 52, a first connecting rod 53 and a second connecting rod 54. The nut 52 is threadedly connected with the lead screw 51, and when the lead screw 51 rotates about its own axis, the nut 52 is driven to move along the extension direction of the lead screw 51. One end of the first connecting rod 53 is fixedly arranged on the nut 52, one end of the second connecting rod 54 is connected with the spray head device 2, and the other end of the first connecting rod 53 is connected with the other end of the second connecting rod 54.

[0043] The other end of the first connecting rod 53 is detachably connected with the other end of the second connecting rod 54. When the first connecting rod 53 and the second connecting rod 54 are in the connected state, when the lead screw 51 rotates, the spray head device 2 can be driven to move along the width direction of the carrier 400 through the connecting assembly, so that the ultraviolet curing lamp 3 moves synchronously. When the first connecting rod 53 and the second connecting rod 54 are disconnected, when the lead screw 51 rotates, the spray head device 2 cannot move, and the ultraviolet curing lamp 3 remains stationary.

[0044] In this embodiment, one end of the second connecting rod 54 is slidably connected with the spray head device 2, and by sliding the second connecting rod 54 relative to the spray head device 2, the first connecting rod 53 and the second connecting rod 54 are connected or disconnected.

[0045] Specifically, the guide rod 21 is fixedly arranged on the nozzle device 2 and extends along the width direction of the carrier 400, and one end of the second connecting rod 54 is sleeved on the guide rod 21 and is arranged to be slidable along the extension direction of the guide rod 21.

[0046] When the second connecting rod 54 slides along the guide rod 21 to the first position, the other end of the first connecting rod 54 is fixedly connected with the other end of the second connecting rod 53, as shown in Figure 4 and Figure 5 When the second connecting rod 54 slides along the guide rod 21 to the second position, the other end of the first connecting rod 53 is disconnected with the other end of the second connecting rod 54, as shown in Figure 6 and Figure 7 .

[0047] In this embodiment, the connecting assembly is arranged on the opposite sides of each nozzle device 2, and when the two second connecting rods 54 on each nozzle device 2 slide towards each other, the two second connecting rods 54 are both in the second position. When the two second connecting rods 54 on each nozzle device 2 slide away from each other, the two second connecting rods 54 are both in the first position.

[0048] The driving device further comprises an elastic member 55, and the nozzle device 2 is fixedly provided with a baffle 22, the baffle 22 is arranged between the two second connecting rods 54, and the elastic member 55 is arranged between each second connecting rod 54 and the baffle 22, one end of the elastic member 55 is arranged on the second connecting rod 54, and the other end of the elastic member 55 is arranged on the baffle 22. The elastic force of the elastic member 55 is used to drive the second connecting rod 54 to automatically reset from the second position to the first position.

[0049] The driving device further comprises a limiting member 56, and the limiting member 56 is used to keep the second connecting rod 54 at the second position. On each nozzle device 2, two limiting members 56 are arranged corresponding to the second connecting rod 54, and the nozzle device 2 is further fixedly provided with a housing 23, the baffle 22 is located in the housing 23, and the two limiting members 56 are arranged to be slidable up and down on the housing 23. When the second connecting rod 54 is located at the first position, the limiting member 56 is arranged on one side of the second connecting rod 54, and the two limiting members 56 are located between the two second connecting rods 54, as shown in Figure 5 When the second connecting rod 54 is located at the second position, the limiting member 56 is arranged on the other side of the second connecting rod 54, and the two limiting members 56 are respectively located on the outer sides of the two second connecting rods 56 and abut against the second connecting rod 54 on the corresponding side, as shown in Figure 7 .

[0050] As shown in Figures 8 to 11 , the limiting member 56 is provided with a first inclined guide surface 561, and the second connecting rod 54 is provided with a second inclined guide surface 541. As shown in Figure 8As shown, the second link 54 is in the first position; when the second link 54 moves from the first position to the second position, the first inclined guide surface 561 abuts against the second inclined guide surface 541 to cooperate with each other after the second link 54 moves a certain distance, as shown in Figure 9 As shown, the second link 54 continues to move in the same direction to move the limiting member 56 upward, so that the limiting member 56 is away from the sliding path of the second link 54, as shown in Figure 10 As shown, the second link 54 can continue to move to the second position direction, until the limiting member 56 moves downward under the action of its own gravity after the second link 54 passes the limiting member 56, and abuts against the other side of the second link 54 to form a block to prevent the second link 54 from moving reversely under the action of the elastic force of the elastic member 55, as shown in Figure 11

[0051] When the second link 54 needs to move to the first position direction, the limiting member 56 needs to be manually pulled upward to make the limiting member 56 away from the moving path of the second link 54. The second link 54 automatically reversely moves under the action of the elastic force of the elastic member 55 to pass the limiting member 56 and move to the first position, and the limiting member 56 moves downward to the initial position under the action of its own gravity.

[0052] In this embodiment, the movements of the second links 54 on different nozzle devices 2 are independently operated, so that some nozzle devices 2 can be selected to be in the connected state with the lead screw 51, so that when the lead screw 51 rotates, these nozzle devices 2 are driven to move, and the ultraviolet curing lamp 3 arranged on the nozzle device 2 is synchronously moved. Or some nozzle devices 2 can also be selected to be in the disconnected state with the lead screw 51, so that when the lead screw 51 rotates, these nozzle devices 2 remain stationary, and the ultraviolet curing lamp 3 arranged on the nozzle device 2 also remains stationary.

[0053] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.​

Claims

1. A coating apparatus comprising a conveyance device for conveying a carrier and a spray head device for spraying a paste onto the carrier, the carrier being in a strip-like sheet shape, a conveyance direction of the conveyance device extending in a length direction of the carrier, and in a width direction of the carrier, the carrier being sequentially coated with an electrode paste and an insulating paste, characterized in that: The coating device further comprises an ultraviolet curing lamp for curing the insulating paste, a light range of the ultraviolet curing lamp corresponding to a width of the insulating paste, the ultraviolet curing lamp being arranged on the nozzle device, the nozzle device being slidably arranged on one side of the conveying device along the width direction of the carrier.

2. The coating apparatus of claim 1, wherein: A plurality of the nozzle devices are arranged on one side of the conveying device along the width direction of the carrier at intervals, each of the plurality of the nozzle devices being slidably arranged along the width direction of the carrier, and one ultraviolet curing lamp being fixedly arranged on each of the nozzle devices.

3. The coating apparatus according to claim 1 or 2, characterized in that: The coating device further comprises a driving device for driving the nozzle device to slide along the width direction of the carrier, the driving device comprising a screw rod rotatably arranged around an axis thereof and a connecting assembly connected between the screw rod and the nozzle device, the connecting assembly comprising a nut threadedly engaged with the screw rod and movable along an extension direction of the screw rod, a first connecting rod and a second connecting rod, one end of the first connecting rod being fixedly arranged on the nut, one end of the second connecting rod being connected with the nozzle device, and the other end of the first connecting rod being connected with the other end of the second connecting rod.

4. The coating apparatus of claim 3, wherein: The other end of the first connecting rod is detachably connected with the other end of the second connecting rod.

5. The coating apparatus of claim 4, wherein: One end of the second connecting rod is slidably connected with the nozzle device, so that the first connecting rod is connected with or detached from the second connecting rod. When the second connecting rod slides to a first position, the other end of the first connecting rod is fixedly connected with the other end of the second connecting rod; when the second connecting rod slides to a second position, the other end of the first connecting rod is detached from the other end of the second connecting rod.

6. The coating apparatus of claim 5, wherein: Each of the nozzle devices is connected with the screw rod through two groups of the connecting assemblies, when two of the second connecting rods in the nozzle devices slide toward each other, both of the second connecting rods are in the second position; when two of the second connecting rods in the nozzle devices slide away from each other, both of the second connecting rods are in the second position.

7. The coating apparatus of claim 5, wherein: The driving device further comprises an elastic member for automatically resetting the second connecting rod from the second position to the first position, a baffle being fixedly arranged on the nozzle device, one end of the elastic member being arranged on the second connecting rod, and the other end of the elastic member being arranged on the baffle.

8. The coating apparatus of claim 5, wherein: The driving device further comprises a limiting member for keeping the second connecting rod at the second position, the limiting member being slidably arranged on the nozzle device; when the second connecting rod is at the first position, the limiting member is located on one side of the second connecting rod; when the second connecting rod is at the second position, the limiting member is located on the other side of the second connecting rod and abuttingly engages with the second connecting rod.

9. The coating apparatus of claim 8, wherein: The limiting piece is provided with a first oblique guide surface, and the second connecting rod is provided with a second oblique guide surface; when the second connecting rod moves from the first position to the second position, the first oblique guide surface can be matched with the second oblique guide surface, so that the limiting piece slides in the direction away from the sliding path of the second connecting rod.

10. The coating apparatus of claim 1, wherein: The ultraviolet curing lamp comprises a lamp holder extending along the length direction of the carrier and a plurality of lamp beads arranged in the lamp holder along the length direction of the lamp holder, after the carrier is coated with the insulating paste and the electrode paste, the carrier moves forward, the power of each lamp bead gradually increases from back to front, or the power of the lamp bead located at the rear is less than the power of the lamp bead located at the front.

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