CN219350299U

CN219350299U - Hemming device

Info

Publication number: CN219350299U
Application number: CN202320360226.7U
Authority: CN
Inventors: 张鹏飞
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-07-14
Anticipated expiration: 2033-02-22

Abstract

The embodiment of the application discloses a flanging device which is used for attaching an adhesive surface of a coating to a to-be-pasted base surface, wherein the flanging device comprises a fixing seat and a flanging piece, and the fixing seat is used for fixing the to-be-pasted base surface; the flanging piece is provided with an axial direction and a circumferential direction surrounding the axial direction, and at least part of the circumferential surface of the flanging piece is formed into a curved pressing surface; wherein, a raised belt is formed on part of the pressing surface, and the raised belt is raised outwards along the radial direction of the flanging piece; the raised strip extends annularly along the press face in the circumferential direction. According to the method, the protruding bands are arranged on the circumferential surface of the flanging piece, so that the flanging piece is in contact with the coating and the battery in the flanging coating process, the coating is extruded from the middle area of the battery to two ends, air bubbles and folds between the coating and the battery are effectively eliminated, and the coating rate of the battery is improved.

Description

Hemming device

Technical Field

The application relates to the technical field of battery processing, in particular to a flanging device.

Background

In the production process of square aluminum shell batteries, insulating films are required to be coated on the square aluminum shell batteries, and then the excessive insulating films on the square aluminum shell batteries are subjected to edge folding operation.

However, at present, when the existing flanging equipment performs flanging operation on the insulating film of the square aluminum-shell battery, adverse phenomena such as bubbles, folds of the insulating film and the like can be caused in the insulating film, and the coating optimal rate is affected. Therefore, how to improve the coating rate of square aluminum-shell batteries is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a flanging device to improve the coating rate of a battery.

In order to solve the technical problems, the embodiment of the application discloses the following technical scheme:

in one aspect, a hemming device is provided, which is used for attaching an adhesive surface of a coating to a base surface to be pasted, and comprises a fixing seat and a hemming piece, wherein the fixing seat is used for fixing the base surface to be pasted; the flanging piece is provided with an axial direction and a circumferential direction surrounding the axial direction, and at least part of the circumferential surface of the flanging piece is formed into a curved pressing surface;

wherein, a raised belt is formed on part of the pressing surface, and the raised belt is raised outwards along the radial direction of the flanging piece; the raised strip extends annularly along the press face in the circumferential direction.

In addition to one or more features disclosed above, or alternatively, the height difference X between the raised strips and the pressing surface is 0.2mm < X < 0.5mm.

In addition to, or in lieu of, one or more of the features disclosed above, the hemming member includes: the connecting shaft and the adhesive layer are coated on the connecting shaft;

at least part of the circumferential surface of the adhesive layer is formed into a curved pressing surface.

In addition to or instead of one or more of the features disclosed above, the connecting shaft has a first axis, and the pressing surface is provided with a first curved surface section, a convex belt and a second curved surface section in sequence along an axial direction;

the distance between the first curved surface section and the first axis is increased along the axial direction;

the distance between the second curved surface section and the first axis is reduced along the axial direction.

In addition to or in lieu of one or more of the features disclosed above, the maximum thickness of the glue layer is defined as H mm, satisfying: h is more than or equal to 15 and less than or equal to 25.

In addition to, or in lieu of, one or more of the features disclosed above, the gum layer is defined as having a shore hardness a, satisfying: a is not less than 45 degrees and not more than 55 degrees.

In addition to, or in lieu of, one or more of the features disclosed above, the connecting shaft has a first end face, the glue layer has a second end face,

the first end face and the second end face are located on the same plane or in the same curved surface.

In addition to or in lieu of one or more of the features disclosed above, the hemming member is defined as having a maximum outer diameter D mm, satisfying: d is more than or equal to 55 and less than or equal to 65.

In addition to, or in lieu of, one or more of the features disclosed above, further comprises: the power output end of the folding driver is in transmission connection with the transmission unit, and the transmission unit is in rotary connection with the connecting shaft.

In addition to one or more of the features disclosed above, or alternatively, a connection through hole is opened inside the connection shaft, through which the connection shaft is rotatably connected with the transmission unit.

One of the above technical solutions has the following advantages or beneficial effects: according to the folding piece, the protruding bands are arranged on the circumferential surface of the folding piece, so that the folding piece is in contact with the coating and the battery in the folding coating process, the coating is extruded from the middle area of the battery to the two ends, bubbles and folds between the coating and the battery are effectively eliminated, and the coating rate of the battery is improved.

Drawings

Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.

FIG. 1 is a three-dimensional structural view of a prior art hemming apparatus;

FIG. 2 is a three-dimensional structural view of a hemming device provided in accordance with an embodiment of the present application;

FIG. 3 is a three-dimensional view of a hemming device provided according to an embodiment of the present application with a battery hidden;

FIG. 4 is a three-dimensional structural view of a hemming member provided in accordance with an embodiment of the present application;

FIG. 5 is a Z-directed cross-sectional view of a hemming member provided in accordance with an embodiment of the present application;

fig. 6 is a cross-sectional view perpendicular to the Z-direction of a hemming member provided in accordance with an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is presented herein for purposes of illustration only and is not intended to limit the application.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" means two or more, unless specifically defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

Fig. 1 is a schematic structural view of a conventional hemming apparatus 200, the hemming apparatus 200 comprising: the square folding corner block 230 is used for folding the envelope of the square aluminum-shell battery, however, when the square folding corner block 230 in the conventional folding equipment is used for folding the insulating film of the square aluminum-shell battery, adverse phenomena such as air bubbles and insulating film folds of the insulating film can be caused, and the envelope quality is affected.

In order to solve the above-described problems, embodiments of the present application provide a hemming device 100. Fig. 2 to 5 show a schematic structural view of the hemming device 100.

Compared with traditional flanging equipment, the flanging piece is provided with the protruding bands on the circumferential surface, so that the flanging piece is in flanging coating process, the protruding bands are in contact with the coating and the battery to extrude the coating from the middle area of the battery towards two ends, bubbles and folds between the coating and the battery are effectively eliminated, and the coating rate of the battery is improved.

Based on this, in the embodiment of the present application, referring to fig. 2 to 5, the hemming device 100 for attaching the bonding surface of the envelope to the base surface to be pasted, may include: the fixing base and the flanging piece 130 are used for fixing the to-be-pasted base surface, and in particular, the fixing base is used for the to-be-pasted base surface of the square aluminum-shell battery 300.

The flanging piece is cylindrical, the flanging piece 130 is provided with an axial direction Z and a circumferential direction R surrounding the axial direction Z, and at least part of the circumferential surface of the flanging piece 130 is formed into a curved pressing surface 1321;

specifically, a portion of press-fit surface 1321 is formed with a convex band 13212, and convex band 13212 is convex outward in the radial direction of hemming member 130 such that convex band 13212 is in a convex structure, while convex band 13212 extends annularly along press-fit surface 1321 in circumferential direction R.

It can be appreciated that when the flanging member 130 attaches the adhesive surface of the coating to the substrate to be attached to hem the prismatic aluminum-shell battery 300, since the raised band 13212 is of a raised structure, the raised band 13212 is firstly contacted with the coating and the battery, so that the coating is extruded from the middle area of the battery towards two ends in the flanging coating process, so that bubbles and wrinkles between the coating and the battery are effectively eliminated, and the coating rate of the battery is improved.

In embodiments of the present application, the height difference X between the raised band 13212 and the press face 1321 is non-uniform, i.e., the height difference X between the raised band 13212 and the press face 1321 is a range of values, rather than a single point of data.

Specifically, referring to FIGS. 5 and 6, the height difference X between the raised strip 13212 and the pressing surface 1321 is 0.2 mm.ltoreq.X.ltoreq.0.5 mm. That is, the height difference X between the convex band 13212 and the pressing face 1321 may be controlled within a range of 0.2mm to 0.5mm, for example, the height difference X between the convex band 13212 and the pressing face 1321 may be any value within a range of 0.2mm to 0.3mm, 0.25 mm to 0.4mm, 0.3mm to 0.45mm, or 0.4mm to 0.5mm, which is within the scope of the present application. It is worth noting that the specific values of the height difference X are given by way of example only, as long as any value of the height difference X in the range of 0.2mm to 0.5mm is within the scope of protection of the present application. This application is through controlling the difference in height X between protruding area 13212 and the pressfitting face 1321 at 0.2mm ~ 0.5mm within range to when making protruding area 13212 and the diolame contact, other regions of pressfitting face 1321 all synchronous contact with the diolame with the hem operation of the complete diolame of jointly, with the hem efficiency and the hem effect of promotion hem device.

In the embodiment of the present application, referring to fig. 5, the length L of the convex band 13212 in the axial Z direction is 9 to 11mm. I.e., the length L of the convex band 13212 in the axial direction Z can be controlled to be in the range of 9 to 11mm. For example, the length L of the raised band 13212 may be in the range of one or any two of 9mm, 9.2mm, 9.4mm, 9.6mm, 9.8mm, 10mm, 10.2mm, 10.4mm, 10.6mm, 10.8mm, 11mm. It is worth noting that the specific values mentioned above for this length L are given by way of example only, as long as any value in the range 9-11 mm is within the scope of protection of the present application. Preferably, the length L of the raised band 13212 in the axial Z direction is 10mm.

According to the method, the length L of the convex belt 13212 along the axial Z direction is controlled within the range of 9-11 mm, so that the convex belt 13212 is ensured to have sufficient length to extrude the coating from the middle area of the battery towards the two ends, bubbles and folds between the coating and the battery are further effectively eliminated, and the coating rate of the battery is improved.

In an embodiment of the present application, referring to fig. 4 and 5, hemming member 130 includes: the connecting shaft 131 and the adhesive layer 132, wherein the adhesive layer 132 is coated on the connecting shaft 131, and at least part of the circumferential surface of the adhesive layer 132 is formed into a curved pressing surface 1321.

Wherein the adhesive layer 132 is made of at least one of natural rubber, styrene-butadiene rubber or silicone rubber. Preferably, the glue layer 132 is made of silicone rubber.

It can be appreciated that, in the present application, by disposing the adhesive layer 132 on the edge folding member 130, and simultaneously disposing the pressing surface 1321 on the circumferential surface of the adhesive layer 132, due to the specific elasticity of the adhesive layer 132, so that the pressing surface 1321 has elasticity, when the convex strip 13212 contacts with the film, other areas of the pressing surface 1321 are in contact with the film to jointly complete the edge folding operation of the film, so as to improve the edge folding efficiency and the edge folding effect of the edge folding device, and simultaneously prevent the edge folding member 130 from transitionally pressing the square aluminum-shell battery 300, and ensure the safety of the edge folding operation.

In the embodiment of the present application, referring to fig. 5, the connecting shaft 131 has a first axis, and the pressing surface 1321 is sequentially provided with a first curved surface section 13211, a convex belt 13212 and a second curved surface section 13213 along the axial direction Z;

the distance between the first curved surface section 13211 and the first axis gradually increases along the axial direction Z, and the distance between the second curved surface section 13213 and the first axis gradually decreases along the axial direction Z, so that the raised belt 13212 protrudes outwards along the radial direction of the flanging piece 130 to form a raised structure, and further, the flanging piece is in flanging coating process, the raised belt is firstly contacted with the coating and the battery, so that the coating is extruded from the middle area of the battery towards two ends, bubbles and wrinkles between the coating and the battery are effectively eliminated, and the coating rate of the battery is improved.

The "first" and "second" in the first curved surface section 13211 and the second curved surface section 13213 are only for being able to distinguish between different curved surface sections disposed on the pressing surface 1321, and are not limited to the number or the order of the curved surface sections.

In the embodiment of the present application, referring to fig. 5, the maximum thickness of the adhesive layer 132 is defined as H mm, which satisfies: h is more than or equal to 15 and less than or equal to 25. I.e., the maximum thickness H of the adhesive layer 132 may be controlled to be in the range of 15 to 25 mm. For example, the maximum thickness H of the glue layer 132 may be in the range of one or any two of 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25 mm. It is worth noting that the specific values mentioned above for the maximum thickness H are given by way of example only, as long as any value in the range of 15-25 mm is within the scope of protection of the present application. The maximum thickness H of the adhesive layer 132 is controlled within the range of 15-25 mm, so that the adhesive layer 132 is ensured to have sufficient buffer thickness, the battery deformation caused by excessive extrusion of the edge folding piece 130 is prevented, and the safety of edge folding operation is improved.

In the embodiment of the present application, the shore hardness of the adhesive layer 132 is defined as a, which satisfies: a is not less than 45 degrees and not more than 55 degrees. I.e., the shore a hardness of the adhesive layer 132 may be controlled in the range of 45 degrees to 55 degrees. For example, the shore a hardness of the adhesive layer 132 may be in a range of one or any two of 45 degrees, 46 degrees, 47 degrees, 48 degrees, 49 degrees, 50 degrees, 51 degrees, 52 degrees, 53 degrees, 54 degrees, 55 degrees. It should be noted that the specific values of the shore a hardness are given only by way of example, as long as any value within the range of 45 degrees to 55 degrees is within the scope of the present application. The shore hardness A of the glue layer 132 is controlled within the range of 45-55 degrees, so that the glue layer 132 has certain elasticity, the glue layer 132 is in elastic contact with a battery, the battery deformation caused by excessive extrusion of the battery by the flanging piece 130 is prevented, and the safety of flanging operation is improved.

In the embodiment of the present application, referring to fig. 5, the maximum outer diameter of hemming member 130 is defined as D mm, satisfying: d is more than or equal to 55 and less than or equal to 65. I.e., the maximum outer diameter D of the hemming member 130 may be controlled to be in the range of 55 to 65 mm. For example, the maximum outer diameter D of hemming member 130 may be in the range of one or any two of 55mm, 56mm, 57mm, 58mm, 59mm, 60mm, 61mm, 62mm, 63mm, 64mm, 65 mm. It is worth noting that the thickness H ₄ The above specific values of (a) are given by way of example only, as long as any value in the range of 5 to 30 μm is within the scope of protection of the present application. Preferably, the maximum outer diameter D of hemming member 130 is 60mm.

It can be appreciated that the present application ensures that the effective operation of the flanging operation is performed by controlling the maximum outer diameter D of the flanging member 130 within the range of 55 to 65mm so that a sufficient distance is provided between the central axis of the flanging member and the battery when the flanging member 130 performs the film-coating flanging.

In an embodiment of the present application, referring to fig. 5, the connecting shaft 131 has a first end surface 1311, the glue layer 132 has a second end surface 1322,

the first end surface 1311 and the second end surface 1322 are located in the same plane or in the same curved surface.

In an embodiment of the present application, referring to fig. 2 and 3, the hemming device 100 further includes: the power output end of the folding driver 110 is in transmission connection with the transmission unit 120, the transmission unit 120 is movably connected with the connecting shaft 131, and the connecting shaft can rotate relative to the transmission unit.

The hemming driver 110 may be any one of a driving motor and a driving cylinder, and the disclosure is not limited in particular, as long as the effect of the hemming driver 110 in the disclosure can be achieved.

The transmission unit 120 may be any one of a screw transmission unit, a gear transmission unit, or a sliding guide transmission unit, which is not specifically limited in this application, so long as the effect of the transmission unit 120 in this application can be achieved.

Specifically, a connection through hole 1312 is formed in the connecting shaft 131, the connecting shaft 131 is rotatably connected with the transmission unit 120 through the connection through hole 1312, two ends of the connecting shaft are arranged in the through hole 1312, and the connecting shaft 131 can rotate relative to the transmission unit 120 to perform the film wrapping and flanging operation.

It can be appreciated that the hemming driver 110 in the present application controls the hemming member 130 to perform the film coating and hemming operation on the square aluminum-shell battery 300 by using the transmission unit 120, so as to realize precise and automatic control of the film coating operation, thereby improving the film coating rate of the battery and synchronously improving the film coating efficiency of the battery.

To sum up, this application sets up protruding area through the circumference surface at the hem spare to make the hem spare at hem diolame in-process, protruding area earlier with diolame and battery contact with the diolame from the middle part region of battery towards both ends extrusion, thereby effectual bubble and fold between removal diolame and the battery, promote the diolame excellent rate of battery.

The above steps are presented merely to aid in understanding the method, structure, and core ideas of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the principles of the application, which are also intended to be within the scope of the appended claims.

Claims

1. The folding device is used for attaching the coated bonding surface to the to-be-pasted base surface and is characterized by comprising a fixing seat and a folding piece, wherein the fixing seat is used for fixing the to-be-pasted base surface; the flanging piece is provided with an axial direction and a circumferential direction surrounding the axial direction, and at least part of the circumferential surface of the flanging piece is formed into a curved pressing surface;

2. The hemming device of claim 1 wherein the difference in height X between the raised strip and the pressing surface is 0.2mm +.x +.0.5 mm.

3. A hemming device as claimed in any one of claims 1 to 2 wherein the hemming member comprises: the connecting shaft and the adhesive layer are coated on the connecting shaft;

4. A hemming device according to claim 3 wherein the connecting shaft has a first axis, and the pressing surface is provided with a first curved section, a convex strip and a second curved section in sequence along the axial direction;

5. A hemming device according to claim 3 wherein the maximum thickness of the glue layer is defined as H mm, satisfying: h is more than or equal to 15 and less than or equal to 25.

6. A hemming device according to claim 3 wherein the shore hardness of the glue layer is defined as a, satisfying: a is not less than 45 degrees and not more than 55 degrees.

7. A hemming device as claimed in claim 3, wherein the connecting shaft has a first end face, the glue layer has a second end face,

8. A hemming device as claimed in claim 1 wherein the maximum outer diameter of the hemming member is defined as D mm, satisfying: d is more than or equal to 55 and less than or equal to 65.

9. A hemming device as claimed in claim 3, further comprising: the power output end of the folding driver is in transmission connection with the transmission unit, and the transmission unit is in rotary connection with the connecting shaft.

10. The hemming device of claim 9 wherein a connecting through hole is formed in the connecting shaft, and the connecting shaft is rotatably connected to the transmission unit through the connecting through hole.