Glue application head for preventing glue overflow and its glue application equipment

Abstract

The present invention relates to the technical field of glue coating devices, in particular to a glue coating head for preventing glue overflow and its glue coating equipment. The glue coating head includes a glue head body, the glue head body has a glue outlet hole and two side baffles, a rear baffle protrudes from the rear side of the glue outlet hole on the glue head body, and both ends of the rear baffle are respectively connected to the two side baffles to form a glue drainage groove. The glue outlet is located in the glue drainage groove. By arranging side baffles and a rear baffle near the glue outlet to form a glue drainage groove, on the one hand, the glue flowing out of the glue outlet can be pre-drained, reducing the pressure after the glue flows out, and the side baffles prevent the glue from overflowing to both sides to prevent edges from appearing during coating. On the other hand, during the coating process, the glue stored in the glue drainage groove can also be pre-coated, and the rear baffle functions as a glue scraping function to control the coating thickness of the glue and maintain the uniformity of the glue coating. Therefore, it can achieve glue coating in a groove and ensure the accuracy of the coating thickness and width.

Description

Technical Field

[0001] The present invention relates to the technical field of glue application devices, in particular to a glue application head for preventing glue overflow, and a glue application device including the above-mentioned glue application head for preventing glue overflow. Background Art

[0002] Lithium batteries have advantages such as high energy density, high capacity, and long service life, and are widely used in many fields such as mobile phones, tablet computers, power tools, electric bicycles, electric vehicles, military equipment, and aerospace.

[0003] Currently, the electrodes of existing lithium batteries generally use coated copper foils and coated aluminum foils to improve the electrical performance of the batteries. At the same time, there have also emerged coated carbon copper foils and coated aluminum foils in which the conductive coating contains conductive carbon;

[0004] With the improvement of the manufacturing process, the existing lithium battery electrodes require glue application in the grooves of the substrate foil. The difference between the glue application width and the groove width is less than 0.5 mm, and the glue application thickness is ≥ 5 microns. However, when the existing glue application head applies glue, the glue easily overflows to both sides, generating edges, and it is difficult to ensure the uniformity of the glue application thickness, which cannot meet the process requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to solve the problem that when the existing glue application head applies glue, the glue easily overflows to both sides, generating edges, and it is difficult to ensure the uniformity of the glue application thickness. Now, a glue application head for preventing glue overflow and a glue application device including the above-mentioned glue application head for preventing glue overflow are provided.

[0006] A glue application head for preventing glue overflow includes a glue head body. The glue head body has a glue outlet hole and two side blocking edges. The glue outlet of the glue outlet hole is located between the two side blocking edges, and the side blocking edges protrude outward from the glue outlet of the glue outlet hole;

[0007] A rear blocking edge protrudes on the glue head body at the rear side of the glue outlet hole. The rear blocking edge is located between the two side blocking edges. The two ends of the rear blocking edge are respectively connected to the two side blocking edges to form a glue discharge groove, and the glue outlet of the glue outlet hole is located in the glue discharge groove.

[0008] In this solution, a side baffle and a rear baffle are provided near the glue outlet to form a glue drainage groove. On the one hand, the glue flowing out of the glue outlet can be pre-drained, reducing the pressure after the glue flows out, and the side baffle prevents the glue from overflowing to both sides to prevent edges from appearing during coating. On the other hand, during the coating process, when the glue output of the glue outlet fluctuates and becomes larger, the excess glue can be stored in the glue drainage groove for replenishment when the glue output of the glue outlet fluctuates and becomes smaller. At the same time, the glue stored in the glue drainage groove can also be pre-coated, avoiding the problem of defects on both sides of the glue coating when the glue output of the glue outlet fluctuates and becomes smaller. The rear baffle functions as a glue scraping device, controlling the coating thickness of the glue and maintaining the uniformity of the glue coating. Therefore, it is possible to apply glue in the groove and ensure the accuracy of the coating thickness and width.

[0009] Further, the rear baffle and the side baffle are perpendicularly arranged to each other.

[0010] Further, the bottom surface of the glue head body protrudes downward with a coating protrusion, and the rear baffle, the side baffle and the glue drainage groove are all located on the bottom surface of the coating protrusion; the coating protrusion separates the glue outlet from the glue head body by a certain distance, preventing interference between the glue head body and other objects during coating, and can reduce the contact area between the coating head and the product to be coated during coating, preventing the product to be coated from being scratched by the coating head, especially for film-like products to be coated such as copper foil or aluminum foil.

[0011] Further, the cross-section of the coating protrusion gradually becomes smaller from the glue head body towards the coating protrusion direction; thus, it is possible to take into account the strength of the coating head at the glue drainage groove while reducing the contact area between the coating head and the product to be coated.

[0012] Further, each side baffle extends forward with a rib plate, and a glue storage groove is formed between the two rib plates; the arrangement of the two rib plates forms the glue storage groove, which can effectively increase the capacity of the glue storage groove, be able to accommodate more excess glue; and enhances the strength of the side baffle, making it not easily bend and deform.

[0013] Further, the front end of the rib plate is fixedly connected to the glue head body; thereby enhancing the overall strength.

[0014] Further, the surface of the rib plate located in the glue storage groove is the inner side surface, and the inner side surface of the rib plate is an inclined surface that gradually slopes outward from the glue head body towards the coating protrusion direction; the setting of the inclined surface is beneficial to the aggregation of glue in the glue storage groove.

[0015] Further, the inner side of the side baffle located in the glue draining groove is the inner side surface, and the distance between the inner side surfaces of the two side baffles = the distance between the bottommost ends of the two rib plates; thus, when applying glue, the glue in the glue storage groove can directly pre-coat the product to be glued with the width to be glued, avoiding defects on both sides of the glue coating.

[0016] Further, the glue draining groove extends to the rib plate; the capacity of the glue draining groove is increased.

[0017] Further, the inner side of the rear baffle located in the glue draining groove is the front side surface, and the front side surface of the rear baffle and the side wall of the glue outlet hole on its side are coplanar; the inner side of the side baffle located in the glue draining groove is the inner side surface, and the inner side surface of the side baffle and the side wall of the glue outlet hole on its side are coplanar.

[0018] Further, the bottom surfaces of the side baffle, the rear baffle and the rib plate are flush.

[0019] Further, a glue inlet hole coaxial with the glue outlet hole is provided in the glue head body, and the cross-sectional area of the glue inlet hole > the cross-sectional area of the glue outlet hole.

[0020] The present invention also provides a glue application device, including the above-mentioned glue application head for preventing glue overflow.

[0021] The beneficial effects of the present invention are as follows: The glue application head for preventing glue overflow of the present invention forms a glue draining groove by arranging side baffles and a rear baffle near the glue outlet. On the one hand, the glue flowing out of the glue outlet can be pre-drained, reducing the pressure after the glue flows out, and the side baffles prevent the glue from overflowing to both sides to prevent edges from appearing during coating. On the other hand, during the coating process, when the glue output of the glue outlet fluctuates and becomes larger, the excess glue can be stored in the glue draining groove for replenishment when the glue output of the glue outlet fluctuates and becomes smaller. At the same time, the glue stored in the glue draining groove can also be pre-coated to avoid the problem of defects on both sides of the glue coating when the glue output of the glue outlet fluctuates and becomes smaller. The rear baffle plays a role in scraping the glue, controlling the coating thickness of the glue and maintaining the uniformity of the glue coating. Therefore, it can realize glue application in the groove and ensure the accuracy of the coating thickness and width. Description of the Drawings

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 is a three-dimensional schematic diagram of one side of the glue application head for preventing glue overflow of the present invention;

[0024] Figure 2 is a three-dimensional schematic diagram of the other side of the glue application head for preventing glue overflow of the present invention;

[0025] Figure 3It is a bottom view schematic diagram of the glue - applying head for preventing glue overflow in the present invention;

[0026] Figure 4 It is Figure 3 a partial enlarged schematic diagram of A in

[0027] Figure 5 It is a cross - sectional schematic diagram of the glue - applying head for preventing glue overflow in the present invention;

[0028] Figure 6 It is Figure 5 a partial enlarged schematic diagram of B in

[0029] Figure 7 It is a schematic diagram of the glue - applying device in the present invention.

[0030] In the figure: 1. Glue - head body, 2. Glue - outlet hole, 201. Glue - outlet, 3. Side baffle, 4. Rear baffle, 5. Glue - draining groove, 6. Glue - applying protrusion, 7. Rib plate, 701. Inclined surface, 8. Glue - storage groove, 9. Glue - inlet hole. Detailed implementation manners

[0031] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic way. Therefore, they only show the components related to the present invention. Directions and references (such as up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following detailed implementation manners are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0032] Embodiment 1

[0033] As Figures 1-6 shown, a glue - applying head for preventing glue overflow includes a glue - head body 1. The glue - head body 1 has a glue - outlet hole 2 and two side baffles 3. The glue - outlet 201 of the glue - outlet hole 2 is located between the two side baffles 3, and the side baffles 3 protrude outward from the glue - outlet 201 of the glue - outlet hole 2;

[0034] A rear baffle 4 protrudes on the glue - head body 1 at the rear side of the glue - outlet hole 2. The rear baffle 4 is located between the two side baffles 3. The two ends of the rear baffle 4 are respectively connected to the two side baffles 3 to form a glue - draining groove 5, and the glue - outlet 201 of the glue - outlet hole 2 is located in the glue - draining groove 5.

[0035] In this embodiment, the glue - outlet 201 can be specifically in a long - strip shape.

[0036] Specifically, the rear baffle 4 and the side baffle 3 are perpendicularly arranged to each other.

[0037] The bottom surface of the rubber head body 1 protrudes downward with a glue - applying protrusion 6, and the rear baffle 4, the side baffle 3 and the glue - discharging groove 5 are all located on the bottom surface of the glue - applying protrusion 6; the glue - applying protrusion 6 separates the glue outlet 201 from the rubber head body 1 by a certain distance, preventing interference between the rubber head body 1 and other articles during glue - applying, and can reduce the contact area between the glue - applying head and the article to be glued, preventing the article to be glued from being scratched by the glue - applying head, especially for film - shaped articles to be glued such as copper foil or aluminum foil.

[0038] The cross - section of the glue - applying protrusion 6 gradually becomes smaller from the rubber head body 1 towards the glue - applying protrusion 6; thus, on the premise of reducing the contact area between the glue - applying head and the article to be glued, the strength of the glue - applying head at the glue - discharging groove 5 can be taken into account.

[0039] It should be noted that in this embodiment, the glue - applying protrusion 6 can be composed of two conical structures or more than two conical structures. The cross - section of the conical structure gradually becomes smaller from the rubber head body 1 towards the glue - applying protrusion 6, and the rear baffle 4, the side baffle 3 and the glue - discharging groove 5 are all located on the bottom surface of the lowermost conical structure.

[0040] Each side baffle 3 extends forward with a rib 7, and a glue - storage groove 8 is formed between the two ribs 7. The rib 7 is fixedly connected to the glue - applying protrusion 6; the formation of the glue - storage groove 8 by the arrangement of the two ribs 7 can effectively increase the capacity of the glue - storage groove 8, enabling it to hold more excess glue; and it enhances the strength of the side baffle 3, making it not easily bend and deform.

[0041] The front end of the rib 7 is fixedly connected to the rubber head body 1; thus, the overall strength is enhanced.

[0042] The surface of the rib 7 located in the glue - storage groove 8 is the inner side surface, and the inner side surface of the rib 7 is an inclined surface 701 that gradually inclines outward from the rubber head body 1 towards the glue - applying protrusion 6; the setting of the inclined surface 701 is beneficial to the aggregation of glue in the glue - storage groove 8.

[0043] The inner side surface of the side baffle 3 located in the glue - discharging groove 5 is the inner side surface, and the distance between the inner side surfaces of the two side baffles 3 = the distance between the lowermost ends of the two ribs 7; thus, during glue - applying, the glue in the glue - storage groove 8 can directly pre - coat the article to be glued with the width to be glued, avoiding defects on both sides of the glue coating.

[0044] The glue - discharging groove 5 extends to the rib 7; the capacity of the glue - discharging groove 5 is increased.

[0045] The front side surface of the rear baffle 4 located in the glue - discharging groove 5 is the front side surface, and the front side surface of the rear baffle 4 and the side wall of the glue outlet 2 on its side are coplanar; the inner side surface of the side baffle 3 located in the glue - discharging groove 5 is the inner side surface, and the inner side surface of the side baffle 3 and the side wall of the glue outlet 2 on its side are coplanar.

[0046] The bottom surfaces of the side edge 3, the rear edge 4, and the rib 7 are flush.

[0047] The glue head body 1 is provided with a glue inlet hole 9 coaxially arranged with the glue outlet hole 2, and the cross-sectional area of the glue inlet hole 9 > the cross-sectional area of the glue outlet hole 2.

[0048] In this embodiment, the glue head body 1, the glue coating protrusion 6, the side edge 3, the rear edge 4, and the rib 7 are integrally formed.

[0049] In this solution, a side edge 3 and a rear edge 4 are arranged near the glue outlet 201 to form a glue drainage groove 5. On the one hand, the glue flowing out of the glue outlet 201 can be pre-drained, reducing the pressure after the glue flows out, and the side edge 3 prevents the glue from overflowing to both sides to prevent edges from appearing during coating. On the other hand, during the coating process, when the glue output of the glue outlet 201 fluctuates and becomes larger, the excess glue can be stored in the glue drainage groove 5 for replenishment when the glue output of the glue outlet 201 fluctuates and becomes smaller. At the same time, the glue stored in the glue drainage groove 5 can also be pre-coated to avoid defects on both sides of the glue coating when the glue output of the glue outlet 201 fluctuates and becomes smaller. The rear edge 4 functions as a glue scraping edge to control the coating thickness of the glue and maintain the uniformity of the glue coating. Therefore, it is possible to perform glue coating in the groove and ensure the accuracy of the coating thickness and width.

[0050] When the glue coating head of the present invention is coating glue, the glue drainage groove 5 and the glue storage groove 8 are located on the front side in the moving direction of the glue coating head, and the rear edge 4 is located on the rear side in the moving direction of the glue coating head. That is to say, the glue coating head moves in the direction from the rear edge 4 to the glue drainage groove 5. For example, when coating glue in the groove of the coated copper foil, there are conductive layers on both sides of the same surface of the copper foil, and a groove is formed between the conductive layers. The difference between the coating width and the groove width of the groove is less than 0.5 mm. The glue coating head is placed in the groove, and both the side edge 3 and the rear edge 4 are in contact with the copper foil. As the glue coating head moves in the groove, glue coating in the groove can be realized, and the difference between the coating width and the groove width can be controlled within 0.5 mm, and there is no edge phenomenon.

[0051] Embodiment 2

[0052] As Figure 7 shown, a glue coating device includes the glue coating head for preventing glue overflow in Embodiment 1 above.

[0053] Based on the ideal embodiments of the present invention as inspiration, through the above description, relevant staff can make various changes and modifications completely within the scope of not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A glue - applying head for preventing glue overflow, characterized in that: It includes a rubber head body (1), the rubber head body (1) has a glue outlet hole (2) and two side baffles (3), the glue outlet (201) of the glue outlet hole (2) is located between the two side baffles (3), and the side baffles (3) protrude outward from the glue outlet (201) of the glue outlet hole (2); On the rubber head body (1), a rear baffle (4) protrudes at the rear side of the glue outlet hole (2), the rear baffle (4) is located between the two side baffles (3), both ends of the rear baffle (4) are respectively connected to the two side baffles (3) to form a glue drainage groove (5), and the glue outlet (201) of the glue outlet hole (2) is located in the glue drainage groove (5); the glue drainage groove (5) is used to enable the glue flowing out of the glue outlet (201) to be pre-drained, reducing the pressure after the glue flows out; Each of the side baffles (3) extends forward with a rib plate (7), a glue storage groove (8) is formed between the two rib plates (7), and the glue in the glue storage groove (8) is used to pre-coat the product to be coated with glue; The glue drainage groove (5) extends to the rib plate (7); The side of the rear baffle (4) located in the glue drainage groove (5) is the front side, and the front side of the rear baffle (4) is coplanar with the side wall of the glue outlet hole (2) on its side; the side of the side baffle (3) located in the glue drainage groove (5) is the inner side, and the inner side of the side baffle (3) is coplanar with the side wall of the glue outlet hole (2) on its side.

2. The glue - applying head for preventing glue overflow according to claim 1, wherein: The rear baffle (4) and the side baffle (3) are perpendicularly arranged to each other.

3. The glue application head for preventing glue overflow according to claim 1, characterized in that: The bottom surface of the rubber head body (1) protrudes downward with a glue coating protrusion (6), and the rear baffle (4), the side baffle (3) and the glue drainage groove (5) are all located on the bottom surface of the glue coating protrusion (6).

4. The glue - applying head for preventing glue overflow according to claim 3, wherein: The cross-section of the glue coating protrusion (6) gradually becomes smaller from the rubber head body (1) to the direction of the glue coating protrusion (6).

5. The glue - applying head for preventing glue overflow according to claim 3, wherein: The rib plate (7) is fixedly connected to the glue coating protrusion (6).

6. The glue application head for preventing glue overflow according to claim 5, wherein: The front end of the rib plate (7) is fixedly connected to the rubber head body (1).

7. The glue - applying head for preventing glue overflow according to claim 5, wherein: The surface of the rib plate (7) located in the glue storage groove (8) is the inner side, and the inner side of the rib plate (7) is an inclined surface (701) that gradually inclines outward from the rubber head body (1) to the direction of the glue coating protrusion (6).

8. The glue - applying head for preventing glue overflow according to claim 5, characterized in that: The side of the side baffle (3) located in the glue drainage groove (5) is the inner side, and the distance between the inner sides of the two side baffles (3) is equal to the distance between the bottommost ends of the two rib plates (7).

9. The glue - applying head for preventing glue overflow according to claim 6, wherein: The bottom surfaces of the side baffle (3), the rear baffle (4) and the rib plate (7) are flush.

10. The glue - applying head for preventing glue overflow according to claim 6, wherein: Inside the rubber head body (1), there is a glue inlet hole (9) coaxially arranged with the glue outlet hole (2), and the cross-sectional area of the glue inlet hole (9) is larger than the cross-sectional area of the glue outlet hole (2).

11. A glue - applying device, characterized in that: It includes a glue coating head for preventing glue overflow as described in any one of claims 1-10.

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