Double-head coating device and coating mechanism

Abstract

The utility model relates to a double-head coating device and a coating mechanism. The double-head coating device comprises a cross beam, the winding bar coating head mechanisms are arranged on the cross beam, and the number of the winding bar coating head mechanisms is two; the two coil bar coating head mechanisms are connected in series and butted on the cross beam for use; wherein the winding bar coating head mechanism comprises a coating head mounting frame arranged on the cross beam and a winding bar coating head arranged on the coating head mounting frame. After the two coating heads are used in a butt joint mode, the coating width is two times that of single-head coating, the coating requirement can be met, and matched equipment and operators are correspondingly reduced; and when the coating width is too large, the stability of double-head coating is better than that of single-head coating.

Description

Technical Field

[0001] The present application relates to the technical field of battery separator coating, and particularly to a double-head coating device and a coating mechanism. Background Art

[0002] The coating methods for lithium-ion battery separators include microgravure coating and wire bar coating. Due to the convenience of wire bar coating, it is widely used. During coating, the slurry in the buffer tank is transported to the coating head through an electric or pneumatic diaphragm pump. The slurry flows into the coating head, and the pressure in the coating head cavity causes the slurry to discharge from the lip. The wire bar rotates at a certain speed driven by a motor. During the rotation, the slurry coming out of the lip fills the gaps between the steel wires of the wire bar. When the base film sheet moves forward and contacts the wire bar, the slurry in the wire bar gap is transferred to the base film sheet, thus realizing slurry coating.

[0003] The current wire bar coating device uses single-head coating. During the coating process, when the width of the base material is less than the width of the coating head, full-width coating of the base material can be achieved; when the width of the base material exceeds the width of the coating head, coating cannot be carried out, and the base material can only be cut and then coated. In this way, at least two coating lines or twice the time are required to complete the coating, and the supporting equipment such as heating boxes, traction machines, winding machines, etc. and the operating personnel also need to be increased accordingly. Moreover, if the method of increasing the length of the wire bar is adopted, the length of the wire bar is limited and the stability of too long wire bars is also poor.

[0004] Therefore, there is an urgent need to provide a double-head coating device and a coating mechanism to solve the above-mentioned technical problems. Utility Model Content

[0005] Based on this, the present application provides a double-head coating device and a coating mechanism. After using two coating heads in butt joint, the coating width is twice that of single-head coating, which can meet the coating requirements, and the supporting equipment and operating personnel are also correspondingly reduced; and when the coating width is too large, the stability of double-head coating is also better than that of single-head coating.

[0006] In a first aspect, a double-head coating device is provided, including: a cross beam; a wire bar coating head mechanism, the wire bar coating head mechanism is arranged on the cross beam and is arranged in two; the two wire bar coating head mechanisms are used in series butt joint on the cross beam; wherein, the wire bar coating head mechanism includes a coating head mounting frame arranged on the cross beam and a wire bar coating head arranged on the coating head mounting frame.

[0007] Preferably, a positioning table is arranged at the edge position of the upper surface of the cross beam; the coating head mounting frame is mounted on the upper surface of the cross beam against the positioning table.

[0008] Preferably, the coating head mounting frame and the cross beam are detachably mounted through connecting bolts.

[0009] Preferably, the double-headed coating device further includes a first height adjustment member; the first height adjustment member is disposed on the coating head mounting bracket and is used to adjust the mounting height of the coating head mounting bracket so that the two wire bar coating heads in series are at the same height.

[0010] Preferably, the first height adjustment member is a first height adjustment setscrew; the first height adjustment setscrew vertically penetrates the coating head mounting bracket, and the lower end abuts against the cross beam; the first height adjustment setscrew is threadedly connected to the coating head mounting bracket.

[0011] Preferably, the double-headed coating device further includes a horizontal adjustment member; the horizontal adjustment members are respectively disposed on both sides of the cross beam and are used to adjust the front and rear positions of the coating head mounting bracket so that the two wire bar coating heads in series are coaxial.

[0012] Preferably, the horizontal adjustment member includes a side panel mounted on the side surface of the cross beam and a horizontal adjustment setscrew disposed on the side panel; the horizontal adjustment setscrew penetrates the side panel and then abuts against the coating head mounting bracket; the horizontal adjustment setscrew is threadedly connected to the side panel.

[0013] Preferably, the wire bar coating head mechanism further includes a wire bar driving motor disposed on the coating head mounting bracket; the output end of the wire bar driving motor is coaxially connected to the wire bar coating head through a coupling.

[0014] Preferably, the wire bar driving motor is detachably mounted on the coating head mounting bracket through a base; a second height adjustment member is disposed on the base, and the second height adjustment member is used to adjust the mounting height of the wire bar driving motor so that the output end of the wire bar driving motor is coaxial with the wire bar coating head.

[0015] In a second aspect, a coating mechanism is provided, including the double-headed coating device and a transition roller. There are at least two transition rollers arranged in parallel, and a substrate bypasses the transition rollers and travels in one direction. The wire bar coating head in the wire bar coating head mechanism is located on a side of the substrate away from the transition rollers, and a coating slit and a coating wire bar are provided at one end of the wire bar coating head, and the coating wire bar faces the surface of the substrate.

[0016] Advantageous effects:

[0017] Two wire bar coating head mechanisms connected in series are mounted on the cross beam, and the two wire bar coating head mechanisms can be used simultaneously. Aiming at the problem of limited coating width of a single head in the prior art, after using two wire bar coating head mechanisms connected in series, the coating width is twice that of a single head coating, which can meet the coating requirements, and the supporting equipment and operators are correspondingly reduced. Moreover, when the coating width is too large, the double-headed coating stability is also better than that of a single head coating. Description of the Drawings

[0018] Figure 1 Is a front view of the double - head coating device in an embodiment;

[0019] Figure 2 Is a top view of the double - head coating device in an embodiment;

[0020] Figure 3 Is a partial schematic view showing the positioning table provided on the cross - beam in an embodiment;

[0021] Figure 4 Is a partial schematic view showing the first height - adjusting set screw provided on the coating head mounting bracket in an embodiment;

[0022] Figure 5 Is a partial schematic view showing the horizontal - adjusting set screw provided on the cross - beam in an embodiment;

[0023] Figure 6 Is a partial schematic view showing the cooperation between the wire - bar driving motor, the coupling and the wire - bar coating head mechanism in an embodiment;

[0024] Figure 7 Is a partial schematic view of the coating mechanism in an embodiment.

[0025] Reference numerals: 1, cross - beam; 11, positioning table; 2, wire - bar coating head mechanism; 21, coating head mounting bracket; 22, wire - bar coating head; 3, connecting bolt; 4, first height - adjusting member; 41, first height - adjusting set screw; 5, horizontal - adjusting member; 51, side panel; 52, horizontal - adjusting set screw; 6, wire - bar driving motor; 7, coupling; 8, second height - adjusting member; 81, second height - adjusting set screw; 9, transition roller; 101, base material. Detailed Description of the Invention

[0026] The following further describes the present application in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that the terms used herein are only for describing the specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless otherwise clearly specified in the context, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will elaborate on each embodiment of this application with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in the embodiments of this application, many technical details are presented to help readers better understand this application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can still be implemented. The markings of the following embodiments are for convenience of description and should not impose any limitations on the specific implementation manners of this application. The various embodiments can be combined with each other and cross-referenced on the premise of not being contradictory.

[0029] The following will describe in detail a double-head coating device in this embodiment with reference to Figures 1 - 5 as shown in the figure, which includes: a cross beam 1 and a wire bar coating head mechanism 2. The wire bar coating head mechanism 2 is arranged on the cross beam 1 and is set to two. The two wire bar coating head mechanisms 2 are arranged in series and butted on the cross beam 1. Among them, the wire bar coating head mechanism 2 includes a coating head mounting rack 21 and a wire bar coating head 22. The coating head mounting rack 21 is arranged on the cross beam 1, and the wire bar coating head 22 is mounted on the coating head mounting rack 21.

[0030] In this embodiment, two wire bar coating head mechanisms 2 are arranged along the length direction of the cross beam 1, and the wire bar coating heads 22 of the two wire bar coating head mechanisms 2 are used in series and butted. Therefore, by using two wire bar coating heads 22 in series and butted, the coating width is twice that of a single-head coating, and even for the coating of ultra-wide substrates, adopting the method of connecting two wire bar coating heads in series has good stability and high coating quality. For the coating of ultra-wide substrates, two coating lines should originally be used to meet the requirements, but this design of this application can be achieved with one double-head coating line, which not only saves equipment costs but also saves labor costs. Of course, this coating device in this embodiment can be applied not only to wire bar coating but also to other coating methods without specific limitations.

[0031] Please refer to Figure 3 as shown in the figure. In this embodiment, it should be noted that a positioning table 11 is arranged at one side edge position of the upper surface of the cross beam 1. The positioning table 11 extends along the length direction of the cross beam 1, and the coating head mounting rack 21 is mounted on the upper surface of the cross beam 1 by abutting against the positioning table 11. Thus, through the setting of the positioning table 11, the coating head mounting rack 21 is not easily disengaged when moving on the cross beam 1, and the coating head mounting rack 21 can be better installed.

[0032] Please refer to Figure 3 、 Figure 4As shown, in some embodiments, the coating head mounting bracket 21 and the cross beam 1 are detachably mounted through connecting bolts 3. The number of connecting bolts 3 can be set to multiple, and the multiple connecting bolts 3 are equally spaced along the length direction of the cross beam 1. Preferably, the connecting bolts 3 are arranged on both sides of the coating head mounting bracket 21 respectively, so that the detachable operation between the coating head mounting bracket 21 and the cross beam 1 can be realized through the connecting bolts 3.

[0033] Please refer to Figure 1 , Figure 3 , Figure 4 As shown, in this embodiment, it should also be noted that the double-headed coating device further includes a first height adjusting member 4. The first height adjusting member 4 is arranged on the coating head mounting bracket 21 and is used to adjust the mounting height of the coating head mounting bracket 21 so that the two wire bar coating heads 22 in series are at the same height. Since two wire bar coating head mechanisms 2 are used in series and butted in this embodiment, therefore, the mounting height of the wire bar coating head 22 in a single wire bar coating head mechanism 2 can be adjusted through the first height adjusting member 4, and then the wire bar coating heads 22 in the left and right two wire bar coating head mechanisms 2 can be ensured to be at the same height.

[0034] In some embodiments, the first height adjusting member 4 is a first height adjusting set screw 41. The first height adjusting set screw 41 is vertically penetrated through the coating head mounting bracket 21, and the lower end abuts against the cross beam 1. The first height adjusting set screw 41 is threadedly connected with the coating head mounting bracket 21. Thus, when it is necessary to adjust the height of the coating head mounting bracket 21, first loosen the connecting bolts 3, and then adjust the first height adjusting set screw 41. By the lower end of the first height adjusting set screw 41 abutting against the cross beam 1, the coating head mounting bracket 21 can be lifted to adjust the height when rotating. After adjusting to the appropriate height, the connecting bolts 3 can be tightened again to further ensure the mounting stability between the coating head mounting bracket 21 and the cross beam 1.

[0035] Please refer to Figure 2 , Figure 5 As shown, in this embodiment, it should also be noted that the double-headed coating device further includes a horizontal adjusting member 5. The horizontal adjusting members 5 are respectively arranged on both sides of the cross beam 1 and are used to adjust the front and rear positions of the coating head mounting bracket 21 so that the two wire bar coating heads 22 in series are coaxial. Since two wire bar coating head mechanisms 2 are used in series and butted in this embodiment, therefore, the front and rear positions of the coating head mounting bracket 21 in a single wire bar coating head mechanism 2 can be adjusted through the horizontal adjusting member 5, and then the front and rear positions of the wire bar coating heads 22 in the left and right two wire bar coating head mechanisms 2 can be ensured to be the same.

[0036] In some embodiments, the horizontal adjustment member 5 includes a side panel 51 mounted on the side of the cross beam 1 and a horizontal adjustment jackscrew 52 disposed on the side panel 51. The horizontal adjustment jackscrew 52 passes through the side panel 51 and abuts against the coating head mounting bracket 21. The horizontal adjustment jackscrew 52 is threadedly connected to the side panel 51. Thus, when it is necessary to adjust the coating head mounting bracket 21, by turning the horizontal adjustment jackscrew 52, fine adjustment of the front and rear positions of the coating head mounting bracket 21 can be performed. Moreover, the diameter of the threaded hole on the cross beam 1 for connecting the connecting bolt 3 is slightly larger than the diameter of the connecting bolt 3, so that the coating head mounting bracket 21 can be finely adjusted in the front and rear positions on the cross beam 1. Theoretically, there is no need to adjust the front and rear positions of the coating head mounting bracket 21. When there are differences, the front and rear positions of the left and right coating head mounting brackets 21 can be finely adjusted by the horizontally arranged front and rear adjustment jackscrews 52 to make the two wire bar coating heads 22 coaxial.

[0037] Please refer to Figure 4 、 Figure 6 As shown in the figure, in this embodiment, it should also be noted that the wire bar coating head mechanism 2 further includes a wire bar driving motor 6 disposed on the coating head mounting bracket 21. The output end of the wire bar driving motor 6 is coaxially connected to the wire bar coating head 22 through a coupling 7. By using the wire bar driving motor 6, the wire bar coating head 22 can be driven to rotate, thereby realizing coating on the substrate. In this embodiment, each of the two wire bar coating head mechanisms 2 uses a wire bar driving motor 6, and the wire bar driving motor 6 is set as a high-precision servo motor. The left and right wire bar coating heads 22 are driven by high-precision servo motors, and the synchronism is good. Preferably, the coupling 7 can be a flexible coupling to reduce the disturbance of the output shaft of the wire bar driving motor 6 to the shaft of the wire bar coating head 22.

[0038] In some embodiments, the wire bar driving motor 6 is detachably mounted on the coating head mounting bracket 21 through a base 61. For example, the detachable operation between the base 61 and the coating head mounting bracket 21 can be achieved by using bolts. A second height adjustment member 8 is further provided on the base 61. The second height adjustment member 8 is used to adjust the mounting height of the wire bar driving motor 6 so that the output end of the wire bar driving motor 6 is coaxially connected to the wire bar coating head 22. Preferably, the second height adjustment member 8 is a second height adjustment jackscrew 81. The second height adjustment jackscrew 81 vertically passes through the base 61, and the lower end abuts against the coating head mounting bracket 21. The second height adjustment jackscrew 81 is threadedly connected to the base 61. Thus, when it is necessary to adjust the height of the wire bar driving motor 6, first loosen the bolt connecting the base 61 to the coating head mounting bracket 21, and then sequentially adjust the second height adjustment jackscrew 81. By the lower end of the second height adjustment jackscrew 81 abutting against the coating head mounting bracket 21, the base 61 is lifted to adjust the height. Then, by adjusting the mounting height of the base 61, the height of the wire bar driving motor 6 is adjusted to make the output shaft of the wire bar driving motor 6 coaxial with the wire bar coating head 22.

[0039] Please refer to Figure 7 As shown, in the embodiment of the present application, a coating mechanism is further provided, including the above-mentioned double-headed coating device and transition rollers 9. There are at least two transition rollers 9 arranged in parallel. The substrate 101 bypasses the transition rollers 9 and travels in one direction. The wire bar coating head 22 in the wire bar coating head mechanism 2 is located on the side of the substrate 101 away from the transition rollers 9, and a coating slit and a coating wire bar are provided at one end of the wire bar coating head 22, and the coating wire bar faces the surface of the substrate 101. The structure and working principle of the wire bar coating head 22 are well known in the art and will not be elaborated in detail here.

[0040] During coating, the coating angles of the left and right wire bar coating heads can be changed by adjusting the positional relationship of the transition rollers 9. This method has a simple structure and is easy to implement.

[0041] The implementation principle of this embodiment: Currently, the wire bar coating device uses single-head coating. When the width of the substrate exceeds the width of the coating head, coating cannot be performed. If the method of increasing the length of the coating wire bar is adopted, due to the limited length of the coating wire bar and the poor stability of too long coating wire bars; therefore, in this embodiment, by using two left and right wire bar coating heads in series and docking, the coating width is twice the single-head coating width, and for the coating of substrates with an extra-wide width, the method of series connection of two coating heads has good stability and high coating quality.

[0042] The above specific implementation manners do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A double-head coating device, characterized in that: include: Beam (1); A wire rod coating head mechanism (2), wherein the wire rod coating head mechanism (2) is arranged on the crossbeam (1), and is provided in two numbers; The two wire rod coating head mechanisms (2) are connected in series and docked on the crossbeam (1) for use; Wherein, the wire rod coating head mechanism (2) comprises a coating head mounting frame (21) arranged on the crossbeam (1) and a wire rod coating head (22) arranged on the coating head mounting frame (21).

2. The double-head coating device according to claim 1, characterized in that: A positioning platform (11) is provided at an edge position on the upper surface of the crossbeam (1); The coating head mounting frame (21) is mounted on the upper surface of the crossbeam (1) against the positioning platform (11).

3. The double-head coating device according to claim 2, characterized in that: The coating head mounting frame (21) and the crossbeam (1) are detachably mounted via connecting bolts (3).

4. The double-head coating device according to claim 1, characterized in that: The double-head coating device also includes a first height adjustment member (4); The first height adjustment member (4) is arranged on the coating head mounting frame (21) and is used to adjust the mounting height of the coating head mounting frame (21) so that the two wire rod coating heads (22) connected in series have the same height.

5. The double-head coating device according to claim 4, characterized in that: The first height adjustment member (4) is a first height adjustment top screw (41); The first height adjustment top screw (41) is vertically inserted into the coating head mounting frame (21), and the lower end thereof abuts against the crossbeam (1); The first height adjustment screw (41) is threadedly connected to the coating head mounting frame (21).

6. The double-head coating device according to claim 1, characterized in that: The double-head coating device also includes a horizontal adjustment member (5); The horizontal adjustment members (5) are respectively arranged on both sides of the crossbeam (1) and are used to adjust the front and rear positions of the coating head mounting frame (21) so that the two wire rod coating heads (22) connected in series are coaxial.

7. The double-head coating device according to claim 6, characterized in that: The horizontal adjustment member (5) comprises a side panel (51) mounted on the side of the crossbeam (1) and a horizontal adjustment top screw (52) arranged on the side panel (51); The horizontal adjustment top screw (52) is passed through the side panel (51) and then abuts against the coating head mounting frame (21); The level adjustment top screw (52) and the side panel (51) are threadedly connected.

8. The double-head coating device according to claim 1, characterized in that: The wire rod coating head mechanism (2) further comprises a wire rod driving motor (6) arranged on the coating head mounting frame (21); The output end of the wire rod driving motor (6) is coaxially connected to the wire rod coating head (22) via a coupling (7).

9. The double-head coating device according to claim 8, characterized in that: The wire rod drive motor (6) is detachably mounted on the coating head mounting frame (21) via a base (61); a second height adjustment member (8) is provided on the base (61), and the second height adjustment member (8) is used to adjust the installation height of the wire rod drive motor (6) so that the output end of the wire rod drive motor (6) and the wire rod coating head (22) are coaxial.

10. A coating mechanism, characterized in that: It comprises a double-head coating device as described in any one of claims 1 to 9 and a transition roller (9), wherein there are at least two transition rollers (9) arranged in parallel, a substrate (101) bypasses the transition roller (9) and moves in one direction, a wire rod coating head (22) in the wire rod coating head mechanism (2) is located on the side of the substrate (101) away from the transition roller (9), and a coating slit and a coating wire rod are provided at one end of the wire rod coating head (22), and the coating wire rod is directly facing the surface of the substrate (101).

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