Spray head and UV insulating paint jet printing device

Abstract

The invention discloses a spray head and a UV insulating paint jet printing device, the spray head comprises a spray head body, vent holes are arranged around spray holes of the spray head body, and the vent holes are communicated with an external ozone gas source. The spray head solves the technical problem that during spray printing, UV light diffusely reflects to the surface of the spray head, so that UV paint in the spray holes is cured to block the spray head.

Description

Technical Field

[0001] The invention belongs to the technical field of UV insulating coating spray printing, and in particular relates to a spray head and a UV insulating coating spray printing device. Background Art

[0002] Printing UV insulating coating on the surface of battery cells is a new process, which requires the use of micro-hole nozzles to print on irregular surfaces such as large flat surfaces, vertical surfaces, cylindrical surfaces, end surfaces, rounded edges, sharp edges of welds, and corners of bosses. During printing, in order to prevent the coating on vertical surfaces, rounded edges, sharp edges of welds, and corners of bosses from flowing away, so that the coating film thickness meets the insulation requirements, a curing lamp is required to quickly perform UV light curing. The shorter the interval time, the better the ink hanging effect and the higher the consistency of the coating film thickness. Therefore, the existing design structure is to place the curing lamp as close to the nozzle as possible to achieve rapid ink hanging. However, it is found in actual operation that while the curing lamp cures the coating on the irregular surface of the battery cell, the UV light is easily diffusely reflected to the surface of the nozzle, curing the UV coating in the nozzle nozzle orifice. The cured UV coating will form particles that clog the nozzle, thereby affecting the stability of the ink path and reducing the service life of the nozzle. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the present invention aims to provide a nozzle and a UV insulating coating printing device, which can solve the technical problem that UV light is diffusely reflected to the nozzle surface during printing, causing the UV coating in the nozzle hole to solidify and clog the nozzle.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A nozzle comprises a nozzle body, and its structural feature is that ventilation holes are arranged around the spray hole of the nozzle body, and the ventilation holes are connected with an external ozone source.

[0006] When the nozzle of the present application is used, the nozzle body is rotated so that the vent hole is located between the nozzle body and the curing light. The external ozone source is connected, and a certain concentration of ozone overflows through the vent hole, thereby forming an ozone protection airflow outside the nozzle body, absorbing the UV curing light diffusely reflected when the battery cell surface is cured, so that the nozzle hole of the nozzle body is not affected by the UV curing light, greatly improving the stability of the printing system and the service life of the nozzle. The nozzle of the present invention can not only realize the instant curing of the coating on the surface of the battery cell, but also shield the curing light to protect the nozzle hole, meeting the requirements of the UV insulating coating printing process on the battery cell surface.

[0007] Preferably, a box body is provided around the outer wall of the nozzle, and a cavity is provided in the box body; the vent hole is provided on the box body, and the vent hole is connected to the cavity, and the vent hole and the nozzle hole have the same direction; a gas pipeline joint is provided on the box body, one end of the gas pipeline joint is connected to the cavity, and the other end is connected to an external ozone source. After the ozone source is connected, a certain concentration of ozone enters the cavity of the box body through the gas pipeline joint and overflows through the vent hole.

[0008] Preferably, the box body is provided with a through hole along the height direction, the through hole passes through the top wall and the bottom wall of the box body, and the cavity and the through hole are separated by a partition, and the outer end of the nozzle body is arranged in the through hole.

[0009] Preferably, the cavity is an annular structure, and the partition is arranged in the space surrounded by the annular structure; the partition is an annular partition and is arranged adjacent to the side wall of the nozzle body, and the nozzle body is arranged in the space surrounded by the annular partition.

[0010] Specifically, the outer side wall of the nozzle body is connected to the top wall of the box body through a plurality of fixing members, and the plurality of fixing members are arranged circumferentially along the outer side wall of the nozzle.

[0011] Preferably, the gas pipeline joints are provided in plurality, and the plurality of gas pipeline joints are arranged circumferentially around the nozzle body. The plurality of gas pipeline joints are provided so that the gas pressure in the cavity of the box body is more balanced.

[0012] Preferably, the vent hole is arranged on the bottom wall of the box body and is arranged close to the partition.

[0013] Preferably, the vent hole is an annular hole, and the nozzle body is arranged in the space surrounded by the annular hole. By providing the annular vent hole, ozone forms an ozone protective airflow around the area between the bottom of the nozzle body and the printing surface, thereby absorbing UV curing light from different directions and providing all-round protection for the nozzle body.

[0014] Preferably, the spray hole and the vent hole of the spray head body are located at the same height.

[0015] Based on the same inventive concept, the present invention also provides a UV insulating coating spray printing device, comprising the spray head as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The nozzle of the present invention forms an ozone protection layer on the outside of the nozzle body to absorb the UV curing light diffusely reflected by the surface of the battery cell during curing, so that the nozzle body is not affected by the UV curing light, greatly improving the stability of the printing system and the service life of the nozzle;

[0018] 2. The nozzle of the present invention can not only realize the instant curing of the coating on the surface of the battery cell, but also shield the curing light to protect the nozzle hole, meet the requirements of the UV insulating coating printing process on the surface of the battery cell, and improve the production capacity and yield of the UV insulating coating printing equipment on the surface of the battery cell;

[0019] 3. The UV insulating paint spray printing device of the present invention improves the consistency of the insulating coating film thickness in the UV insulating paint spray printing process on the surface of the battery cell, thereby greatly improving the appearance and insulating voltage resistance performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the nozzle of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0022] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of ;

[0023] Figure 4 for Figure 1 Schematic diagram of ozone protection gas flow formation.

[0024] In the figure:

[0025] 1-box body, 101-cavity, 102-partition, 103-through hole, 104-bottom wall, 105-top wall, 2-gas pipeline joint, 3-nozzle body, 301-spray hole, 4-fixing part, 5-sealing ring, 6-vent hole. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0027] like Figure 1 and Figure 3 As shown, the nozzle of this embodiment includes a box body 1, four gas pipeline joints 2 and a nozzle body 3. The four gas pipeline joints 2 are all arranged on the top wall 105 of the box body 1 and distributed around the nozzle body 3. The outer wall of the nozzle body 3 is connected to the top wall 105 of the box body 1 through a plurality of fixing members 4, and the plurality of fixing members 4 are arranged circumferentially along the outer wall of the nozzle body 3. Figure 3As shown, a through hole 103 is provided in the middle of the box body 1 along the height direction, and the through hole 103 passes through the top wall 105 and the bottom wall 104 of the box body 1. The outer end of the nozzle body 3 is arranged in the through hole 103, and the outer end of the nozzle body 3 and the bottom wall of the box body 1 are located on the same plane. An annular cavity 101 is provided in the box body 1, and the cavity 101 and the through hole 103 are separated by a partition 102 of an annular structure, and the outer end of the nozzle body 3 is arranged in a space surrounded by the partition 102 of the annular structure. One end of the four gas pipeline connectors 2 is connected to the cavity 101, and the other end is connected to the ozone gas source through a delivery pipeline. As shown Figure 2 and Figure 3 As shown, a vent hole 6 is provided on the bottom wall of the box body 1, and the vent hole 6 is connected to the cavity 101. The vent hole 6 and the spray hole 301 of the nozzle body 3 face the same direction, and the vent hole 6 and the spray hole 301 are located at the same height. The vent hole 6 is an annular hole and is arranged close to the partition 104, and the partition 104 is arranged close to the side wall of the nozzle body 3. The nozzle body 3 is located in the space surrounded by the vent hole 102. A sealing ring 5 is provided between the bottom wall 104 and the side wall of the box body 1 to prevent the gas in the cavity 101 from overflowing.

[0028] This embodiment also provides a UV insulating paint printing device, including the nozzle as described above. When the printing device is used, the nozzle body 3 sprays paint ink droplets from its tiny nozzle holes 301 through pressure control to print on the surface of the battery cell. Figure 4 As shown, the external ozone source is turned on, and the ozone enters the cavity 101 through the delivery pipeline and the gas pipeline joint 2 for buffering. After the pressure and flow are balanced, the ozone overflows through the vent 6. The ozone surrounds the periphery of the nozzle body 3 to form an ozone gas flow with balanced pressure and flow, thereby absorbing the UV curing light from different directions around the nozzle body 3, so that the nozzle body 3 is not affected by the curing lamp when printing, which greatly improves the stability of the printing system and the service life of the nozzle.

[0029] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments made by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A nozzle, comprising a nozzle body (3), characterized in that: A vent hole (6) is provided around the spray hole (301) of the spray head body (3), and the vent hole (6) is connected to an external ozone source.

2. The nozzle according to claim 1, characterized in that: A box body (1) is provided around the outer wall of the nozzle (3), and a cavity (101) is provided in the box body (1); the vent hole (6) is provided on the box body (1), and the vent hole (6) is connected to the cavity (101), and the vent hole (6) and the nozzle (301) are oriented in the same direction; a gas pipeline connector (2) is provided on the box body (1), and one end of the gas pipeline connector (2) is connected to the cavity (101), and the other end is connected to an external ozone source.

3. The nozzle according to claim 2, characterized in that: The box body (1) is provided with a through hole (103) along the height direction, the through hole (103) passes through the top wall (105) and the bottom wall (104) of the box body (1), and the cavity (101) and the through hole (103) are separated by a partition (102), and the outer end of the nozzle body (3) is arranged in the through hole (103).

4. The nozzle according to claim 3, characterized in that: The cavity (101) is an annular structure, and the partition (102) is arranged in the space surrounded by the annular structure; the partition (102) is an annular partition and is arranged close to the side wall of the nozzle body (3), and the nozzle body (3) is arranged in the space surrounded by the annular partition.

5. The nozzle according to claim 4, characterized in that: The outer wall of the nozzle body (3) is connected to the top wall (105) of the box body (1) via a plurality of fixing members (4), and the plurality of fixing members (4) are arranged circumferentially along the outer wall of the nozzle body (3).

6. The nozzle according to claim 4, characterized in that: The gas pipeline joints (2) are provided in plurality, and the plurality of gas pipeline joints (2) are arranged circumferentially around the nozzle body (3).

7. The nozzle according to claim 4, characterized in that: The vent hole (6) is arranged on the bottom wall (104) of the box body (1) and is arranged close to the partition (102).

8. The nozzle according to claim 7, characterized in that: The vent hole (6) is an annular hole, and the nozzle body (3) is arranged in the space surrounded by the annular hole.

9. The nozzle according to any one of claims 1 to 8, characterized in that: The spray hole (301) and the vent hole (6) of the spray head body (3) are located at the same height.

10. A UV insulating coating printing device, characterized in that: The invention comprises the nozzle as claimed in any one of claims 1 to 9.

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