CN115700175B - Embossing device - Google Patents

Abstract

The application relates to an embossing device which comprises a roller, a heater, rolling parts and a heat insulating part, wherein the heater is arranged in the roller, the heater and the roller are coaxially arranged, at least one rolling part and at least one heat insulating part are arranged on the roller, the rolling parts and the heat insulating part are sequentially arranged at intervals, the contact area between the rolling parts and a film is reduced, the film is prevented from being adhered to the rolling parts after being melted, and meanwhile, a plurality of rolling parts can be arranged on the roller, so that the embossing efficiency of forming a plurality of avoidance parts on the film is greatly improved.

Description

Embossing device

Technical Field

The invention relates to the technical field of solar photovoltaic modules, in particular to an embossing device.

Background

The novel solar photovoltaic module is characterized in that a cell string is formed by stacking cells (a stacking tile or stitch welding technology), the height of a stacking region of the cells is larger than that of an un-stacked region, before a film (a glue film) does not reach a melting temperature, a laminating machine is vacuumized and pressurized, and due to the problem of the height difference between the stacking region of the cells and the un-stacked region, pressure acts on the stacking region during lamination, so that the stacking region is easily damaged under the action of the pressure, and the stacking region of the cells is extruded to generate hidden cracks.

In order to reduce the risk of hidden cracking caused by extrusion of the cell stacking region, embossing is required to be performed on the position, corresponding to the cell stacking region, of the film, so that an avoidance portion is formed, the height of the cell stacking region is greater than that of the non-stacking region, and therefore the extrusion pressure of the cell stacking region is reduced during lamination.

At present, the film is embossed by a pressing forming device 10, and the pressing forming device 10 comprises a forming pressing strip 11, a heat insulation strip 12 and a supporting I-steel 13 which are connected in sequence. The heat insulating strip 12 is embedded with a heating pipe 14, and the heating pipe 14 heats the molding press strip 11, as shown in fig. 1. The press molding device 10 generally employs an air cylinder to control its up-down movement, so as to control the press molding bead 11 to press the film downward for embossing.

However, in the above manner, the contact area between the film forming press bar 11 and the film is large, so that the film is easy to adhere to the forming press bar 11 after being melted, and the film rises together with the forming press bar 11 when the pressing forming device 10 is lifted.

Disclosure of Invention

In order to overcome the defects, the application provides an embossing device which is beneficial to preventing films from adhering to the embossing device after melting.

The embodiment of the application provides an embossing device which comprises a roller, a heater, a rolling piece and a heat insulating piece, wherein the heater is arranged in the roller and is coaxially arranged with the roller;

The roller is provided with at least one rolling piece and at least one heat insulation piece, and the rolling pieces and the heat insulation pieces are sequentially arranged at intervals.

Optionally, the rolling piece and/or the heat insulation piece are detachably sleeved on the roller.

Optionally, the roller is in a polygonal column structure;

The rolling piece is provided with a polygonal opening matched with the rolling shaft along the axis of the rolling piece.

Optionally, the roller is provided with a containing cavity along an axis thereof, and the heater is contained in the containing cavity.

Optionally, the diameter of the circumcircle of the roller is 70 mm-90 mm, and the diameter of the accommodating cavity is 10 mm-20 mm.

Optionally, the rolling piece is disc-shaped, and the outer diameter of the rolling piece is 95 mm-115 mm.

Optionally, an anti-sticking coating is further coated on the peripheral surface and/or the side surface of the rolling piece, and the anti-sticking coating is a polytetrafluoroethylene coating or a ceramic coating.

Optionally, the roller and/or the rolling member is made of any one of stainless steel, titanium metal or titanium alloy.

Optionally, the heat insulation piece is in a circular tube shape, a circular opening matched with the circumscribing circle of the roller is formed along the axis of the heat insulation piece, the outer diameter of the heat insulation piece is 90-110 mm, and the diameter of the circular opening is 70-90 mm.

Optionally, the heat insulating piece is made of polytetrafluoroethylene.

Optionally, at least one end in the axial direction of the roller is further provided with a displacement adjusting member, and the displacement adjusting member is used for adjusting the axial installation position of the rolling member along the roller.

Optionally, the displacement adjusting member includes a fixed disk, a fastener, and an adjusting member;

the fixed disc is provided with a locking hole and an adjusting hole;

One end of the fastener penetrates through the locking hole and then is connected with the rolling shaft, and one end of the adjusting piece penetrates through the adjusting hole and then abuts against the rolling piece.

Compared with the prior art, the technical scheme has at least the following technical effects:

In the embossing device provided by the embodiment of the application, at least one rolling piece and at least one heat insulation piece are arranged on the rolling shaft, the rolling piece and the heat insulation piece are sequentially arranged at intervals, the rolling shaft drives the rolling piece to rotate, so that the contact area of the rolling piece and the film is reduced, the film is prevented from being adhered to the rolling piece after being melted, and meanwhile, a plurality of rolling pieces can be arranged on the rolling shaft, so that a plurality of avoiding parts can be formed on the film by rolling, and the embossing efficiency of forming a plurality of avoiding parts on the film is greatly improved.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a press-down forming device in the prior art.

Fig. 2 is a schematic structural diagram of an embossing apparatus according to an embodiment of the present application.

Fig. 3 is an exploded view of an angle of an embossing apparatus according to an embodiment of the present application.

Fig. 4 is an exploded view of an embossing apparatus according to another embodiment of the present application.

Reference numerals:

10. Pressing down the forming device;

11. 12 parts of forming pressing strips, 12 parts of heat insulation strips, 13 parts of supporting I-steel, 14 parts of heating pipes;

20. an embossing device;

21. Roller, 211, roller body, 212, guide mounting part, 213, locking screw hole, 22, heater, 23, rolling piece, 231, polygonal opening, 24, heat insulating piece, 241, circular opening, 25, displacement adjusting piece, 251, fixed disk, 252, fastener, 253, locking hole, 254, adjusting hole;

30. A film;

31. a dodging part, 32, a non-dodging part.

Detailed Description

For a better understanding of the technical solution of the present invention, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely an association relationship describing the associated object, and means that there may be three relationships, e.g., a and/or B, and that there may be three cases where a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

The existing solar photovoltaic module mostly adopts a sandwich structure, and the structure sequentially comprises glass, packaging materials, solar cell strings, packaging materials and a back plate from bottom to top, wherein a junction box is assembled on the surface of the back plate to lead out electricity generated by the solar photovoltaic module, and meanwhile, a frame is assembled on the periphery of the back plate to improve the mechanical strength of the solar photovoltaic module and facilitate installation.

The solar cell string is formed by connecting a certain number of cell sheets in a serial and parallel mode. In the packaging process of the laminated tile or stitch welding solar module, the front and back surfaces of the adjacent battery pieces are connected through conductive adhesive or welding strips, at least part of the two adjacent battery pieces are laminated, so that the height of a laminated area is larger than that of an unlanded area, the solar battery string is caused to generate a height difference, glass, packaging materials and a back plate are laminated with the solar battery string, in the process, vacuumizing, pressurizing and heating are needed firstly, the packaging materials are melted, and the glass and the back plate are adhered to the front and back surfaces of the solar battery string after solidification.

However, before the packaging material is melted, because vacuum pumping and pressurization are needed, the glass, the cover plate and the packaging material move towards the direction close to the solar cell string, and in the moving process, because of the problem of the height difference between the laminated area and the non-laminated area of the cell, pressure firstly acts on the laminated area during lamination, so that the laminated area is easily damaged under the action of the pressure, namely the laminated area is extruded to generate hidden cracks.

Therefore, the position of the packaging material corresponding to the battery piece laminating region needs to be embossed, so that the avoidance portion is formed, and the height of the battery piece laminating region is avoided more than that of the non-laminating region, so that the pressure of the battery piece laminating region under extrusion is reduced during lamination. The packaging material is usually a polymer film (adhesive film), the film is usually an Ethylene-vinyl acetate Copolymer (EVA) packaging adhesive film or an Ethylene-octyl Copolymer (Polyolefin Elastomer, POE) packaging adhesive film, the film is heated and melted to a certain extent to become a liquid adhesive which can flow and has certain viscosity, and the back plate and glass are adhered to the front side and the back side of the solar cell string after cooling and solidification.

Referring to fig. 2, an embodiment of the present application provides an embossing apparatus 20 including a roller 21, a heater 22, a rolling member 23, and a heat insulating member 24. The heater 22 is disposed in the roller 21, and the heater 22 is disposed coaxially with the roller 21.

The roller 21 is provided with at least one rolling piece 23 and at least one heat insulation piece 24, and the rolling pieces 23 and the heat insulation pieces 24 are sequentially arranged at intervals.

Specifically, the heater 22 is coaxially disposed with the roller 21, so that heat generated by the heater 22 can be uniformly transferred to the rolling member 23 along the radial direction of the roller 21, and after the rolling member 23 is heated, the area of the film 30 contacting the rolling member 23 will be melted to form a groove, i.e. the avoiding portion 31. In addition, since the heat generated by the heater 22 can be uniformly transferred, the bending deformation of the roller 21 after being heated is small, thereby ensuring that the formation position of the avoiding portion 31 on the film 30 always corresponds to the lamination area of the battery cells.

In a specific embodiment, the roller 21 may be made of a high-strength material such as stainless steel, titanium metal, titanium alloy, etc. to meet the structural rigidity requirement of the roller 21. The roller 21 may be integrally formed, or may be formed by welding, casting, or the like.

The heat insulating piece 24 and the rolling piece 23 are arranged at intervals, the heat insulating piece 24 can effectively delay the heat generated by the heater 22 from losing, and can also effectively prevent the heat generated by the heater 22 from radiating to the non-avoidance portion 32 area on the film 30, so that the non-avoidance portion 32 area is prevented from being heated and then melted and softened, and the depth of the avoidance portion 31 is ensured to be relatively uniform.

Referring to fig. 3 and 4, the rolling member 23 and/or the heat insulating member 24 are detachably sleeved on the roller 21. The rolling piece 23 and/or the heat insulating piece 24 can be independently and respectively sleeved on the roller 21 in a detachable way, or the rolling piece 23 and/or the heat insulating piece 24 can be integrally connected through integral molding and are sleeved on the roller 21 in a detachable way, so that the assembly efficiency of the embossing device 20 is improved.

Specifically, according to the number of the battery sheet stacking regions and the distance between two adjacent battery sheet stacking regions, the number of the avoiding portions 31 to be formed on the film 30 and the distance between two adjacent avoiding portions 31 are determined, and further, the number of the rolling members 23 and the axial width of the heat insulating member 24 along the roller 21 are determined, and the heat insulating member 24 is correspondingly disposed between two adjacent rolling members 23, for example, in the present embodiment, the number of the rolling members 23 and the heat insulating member 24 is 6, and in other embodiments, the number of the rolling members 23 and the heat insulating member 24 may be 1,2,3,4,5, 7, 8, etc., and the number of the rolling members 23 and the heat insulating member 24 may be the same or different, which is not limited herein.

It will be appreciated that the rolling members 23 and/or the insulating members 24 may also be fixedly disposed on the roller 21. The rolling piece 23 and/or the heat insulating piece 24 may be directly fixed to the roller 21 by a fixing piece, or the rolling piece 23 and/or the heat insulating piece 24 may be integrally formed with the roller 21.

Further, the roller 21 is provided with a housing chamber (not shown) along its axis, and the heater 22 is housed in the housing chamber such that the heater 22 is disposed coaxially with the roller 21.

Specifically, the heater 22 may be an electric heating pipe or an electric heating rod, the heater 22 and the roller 21 are coaxially arranged, and all the rolling members 23 sleeved on the roller 21 can be heated by using one heater 22, so that the required number of the heaters 22 is reduced, and the energy consumption is reduced.

It will be appreciated that the heater 22 may be fixedly received in the receiving chamber to facilitate its heating efficiency, or in another embodiment, the heater 22 may be removably received in the receiving chamber to facilitate replacement of the heater 22 in the event of damage to the heater 22.

Further, the roller 21 has a polygonal column structure, and the rolling piece 23 is provided with a polygonal opening 231 along its axis, which is adapted to the roller 21.

Specifically, since the polygonal opening 231 on the rolling member 23 is adapted to the polygonal cylindrical structure of the roller 21, after the rolling member 23 is sleeved on the roller 21, the rolling member 23 will not rotate relative to the roller 21 after being stressed, so that the assembly stability of the rolling member 23 and the roller 21 is ensured, and the problem of uneven depth of the formed avoiding portion 31 due to autorotation of the stress after the rolling member 23 is pressed down to contact with the film 30 is avoided.

In this embodiment, the roller 21 is in a hexagonal cylinder structure, the rolling member 23 is provided with a hexagonal opening along its axis and adapted to the roller 21, and the roller 21 may also be in an octagonal cylinder structure or other polygonal cylinder structures, which is not limited herein.

The diameter of the circumcircle of the roller 21 can be set according to practical requirements, for example, the diameter of the circumcircle of the roller 21 is 70 mm-90 mm. Specifically, the diameter of the circumscribed circle of the roller 21 may be 70mm, 75mm, 80mm, 85mm, 90mm, etc., and is not limited herein. In this embodiment, the diameter of the circumscribed circle of the roller 21 is 80mm.

The diameter of the receiving chamber may be determined according to the size of the heater 22, for example, the diameter of the receiving chamber is 10mm to 20mm. Specifically, the diameter of the accommodating chamber may be 10mm, 12mm, 14mm, 15mm, 16mm, 18mm, 20mm, etc., without limitation. In this embodiment, the diameter of the receiving chamber is 16mm.

Further, the outer circumferential surface and/or the side surface of the rolling member 23, which is in contact with the film 30, is coated with a release coating to solve the problem of adhesion of the rolling member 23 after the film 30 is melted and softened. The release coating may be a polytetrafluoroethylene (teflon) coating, a ceramic coating, or other release coating that prevents the film 30 from adhering to the roll 23 after melting.

Specifically, the rolling piece 23 may be made of high-strength materials such as stainless steel, titanium metal, titanium alloy, etc., and the rolling piece 23 may be integrally formed or may be formed by welding, casting, etc. The rolling piece 23 may be disc-shaped, so that the contact area between the rolling piece 23 and the film 30 is reduced, the film 30 is prevented from adhering to the rolling piece 23 after melting, and the depth of the avoiding portion 31 formed on the film 30 is further ensured to be uniform.

The size of the rolling member 23 may be set according to the size of the roller 21 and practical requirements, and the outer diameter of the rolling member 23 should be larger than the diameter of the circumcircle of the roller 21, for example, the outer diameter of the rolling member 23 is 95 mm-115 mm. Specifically, the outer diameter of the rolled piece 23 may be 95mm, 100mm, 105mm, 110mm, 115mm, etc., without limitation. In the present embodiment, the outer diameter of the rolling member 23 is 105mm.

In addition, since the rolling piece 23 can be disc-shaped, heat can be uniformly transferred to the rolling piece 23, bending deformation of the rolling piece 23 after being heated is effectively avoided, the temperature of each point on the peripheral side surface of the rolling piece 23 is the same, and after the peripheral side surface of the rolling piece 23 is contacted with the film 30, the depth of the avoiding part 31 formed on the film 30 is ensured to be uniform.

Further, the heat insulating member 24 can be prefabricated into a plurality of different lengths, and the heat insulating member 24 is sleeved between two adjacent rolling members 23 by replacing the heat insulating member 24 with different lengths, so that the distance between the two adjacent rolling members 23 can be adjusted to meet the requirement of forming avoidance portions 31 with different distances on the film 30.

Specifically, the heat insulator 24 may be made of a heat insulating material such as polytetrafluoroethylene (teflon). The heat insulating member 24 may be in a circular tube shape, and the heat insulating member 24 is provided with a circular opening 241 along its axis, which is adapted to the circumcircle of the roller 21. In addition, the side wall of the rolling piece 23, the inner wall of the circular opening 241 and the side wall of the roller 21 can also surround to form a sealed heat insulation space, so that static air exists in the heat insulation space, and the heat conduction of the static air is slower because the heat conduction coefficient of the air is lower, the static air can be used for heat insulation, the heat loss is further reduced, the energy consumption of the heater 22 is reduced, and meanwhile, the heat radiation to the non-avoidance part 32 area on the film 30 is prevented.

The outer diameter of the heat insulating member 24 may be set according to the outer diameter of the rolling member 23 and actual requirements, and the outer diameter of the heat insulating member 24 should be smaller than the outer diameter of the rolling member 23 and larger than the diameter of the circumcircle of the rolling shaft 21, for example, the outer diameter of the heat insulating member 24 may be 90 mm-110 mm. Specifically, the outer diameter of the heat insulator 24 may be 90mm, 95mm, 100mm, 105mm, 110mm, etc., without limitation. In this embodiment, the outer diameter of the insulation 24 is 100mm.

The diameter of the circular opening 241 is adapted to the diameter of the circumscribing circle of the roller 21, and the diameter of the circular opening 241 may be equal to the diameter of the circumscribing circle of the roller 21, i.e. the diameter of the circular opening 241 may be 70 mm-90 mm. Specifically, the diameter of the circular opening 241 may be 70mm, 75mm, 80mm, 85mm, 90mm, etc., without limitation. The diameter of the circular opening 241 may also be slightly larger than the diameter of the outer circle of the roller 21. In the present embodiment, the diameter of the circular opening 241 is 80mm, which is not limited herein.

Further, at least one axial end of the roller 21 is further provided with a displacement adjuster 25, and the displacement adjuster 25 is used for adjusting the axial installation position of the roller 23 along the roller 21.

Specifically, when there is a certain deviation between the installation position of the rolling member 23 on the roller 21 and the position where the relief portion 31 needs to be formed on the film 30, the installation position of the rolling member 23 in the axial direction of the roller 21 can be adjusted by the displacement adjusting member 25.

Further, the displacement regulating member 25 includes a fixed plate 251, a fastener 252, and a regulating member (not shown in the drawings). The fixed plate 251 is fixed to at least one end of the roller 21 in the axial direction by the fastening member 252, the adjusting member is movably disposed on the fixed plate 251, and the adjusting member can be used for adjusting the mounting position of the rolling member 23 in the axial direction of the roller 21, so that the forming positions of the rolling member 23 and the avoiding portion 31 on the film 30 always correspond.

Specifically, the fixed plate 251 is provided with a locking hole 253 and an adjusting hole 254, one end of the fastening piece 252 passes through the locking hole 253 and then is connected with the roller 21, and one end of the adjusting piece passes through the adjusting hole 254 and then is abutted against the rolling piece 23.

In this embodiment, the fastener 252 may be a fastening screw, and the adjusting member may be an adjusting screw. The locking hole 253 is a through hole, the adjusting hole 254 is a threaded hole, and a locking threaded hole 213 is formed in a side wall of at least one axial end of the roller 21 opposite to the locking hole 253 in the fixed plate 251, and the fastener 252 passes through the locking hole 253 and is then locked in the locking threaded hole 213, so that the fixed plate 251 is fixed at least one axial end of the roller 21.

The adjusting member is locked in the adjusting hole 254, and one end of the adjusting member passing through the adjusting hole 254 abuts against the rolling member 23.

Specifically, the distance between the center of the adjusting hole 254 and the center of the fixed plate 251 is greater than the distance between the center of the locking hole 253 and the center of the fixed plate 251, so that one end of the adjusting member passing through the adjusting hole 254 can abut against the sidewall of the rolling member 23 after the adjusting member is locked in the adjusting hole 254. Thus, by adjusting the depth to which the adjustment member is locked in the adjustment hole 254, the adjustment member can push the roller 23 and the heat insulating member 24 to move in the axial direction of the roller 21, thereby adjusting the mounting position of the roller 23 in the axial direction of the roller 21.

Further, the roller 21 includes a roller body 211 and a guiding installation portion 212, the guiding installation portion 212 is connected to at least one axial end of the roller body 211, and the fixing plate 251 is provided with an opening along the axis thereof adapted to the guiding installation portion 212, and the fixing plate 251 is sleeved on the guiding installation portion 212 through the opening.

Specifically, the guide mounting portion 212 has an outer diameter smaller than that of the roller body 211. And a locking threaded hole 213 is formed in a side wall of at least one axial end of the roller 21 body opposite to a locking hole 253 formed in the fixing plate 251, and a fastener 252 is locked in the locking threaded hole 213 after passing through the locking hole 253, so that the fixing plate 251 is fixed to at least one axial end of the roller 21 body.

Further, the guide mounting portion 212 may be a polygonal column structure, and the fixing plate 251 is provided with a polygonal opening 231 along its axis, which is adapted to the guide mounting portion 212.

Specifically, since the polygonal opening 231 on the fixed disc 251 is adapted to the polygonal column structure of the guide mounting portion 212, after the fixed disc 251 is sleeved on the guide mounting portion 212, the fixed disc 251 cannot rotate relative to the guide mounting portion 212, so that the assembly stability of the fixed disc 251 and the roller 21 is ensured.

In this embodiment, the guiding installation part 212 is in a hexagonal cylinder structure, the fixing plate 251 is provided with a hexagonal opening along its axis, which is adapted to the guiding installation part 212, and the guiding installation part 212 may also be in an octagonal cylinder structure or other polygonal cylinder structures, which is not limited herein.

Further, an elastic member may be further connected to an end of the adjusting member near the rolling member 23, so that the adjusting member is in flexible contact with the rolling member 23 when abutted against the rolling member 23, so as to avoid that the rolling member 23 is pressed and deformed, and further, the formed avoiding portion 31 does not correspond to the lamination area of the battery sheet.

Further, the embossing device 20 further comprises a driving device for driving the roller 21 to move up and down to drive the rolling member 23 to move up and down, controlling the contact state of the rolling member 23 and the film 30, and controlling the depth of the avoiding portion 31 formed by the contact of the rolling member 23 and the film 30 to match the required depth, and the driving device is also used for driving the roller 21 to translate, and because the rolling member 23 is a circular pressure plate, when the driving device drives the roller 21 to translate, the rolling member 23 can roll on the film 30. Specifically, the driving device may be at least one of a stepping motor, an air cylinder, a servo motor, and the like.

Further, the embossing apparatus 20 further includes a cooling device for cooling the relief portion 31, and when the rolling member 23 contacts the film 30, the contact area of the rolling member and the film is melted and softened, and then the rolling member is cooled and solidified by the cooling device, thereby forming the relief portion 31.

Specifically, the cooling device is located on the opposite side of the roller 21 in the translational direction thereof, and the cooling device can cool and solidify the melted and softened region of the film 30 after having been pressed down by the pressing member 23, thereby forming the avoiding portion 31. The cooling device may be fixedly disposed on the roller 21, may be detachably connected to the roller 21, or may be separately disposed from the roller 21 as two separate components, so long as it is sufficient that the cooling device can cool and solidify the melt-softened region on the film 30, and is not limited herein. The cooling device also includes a fan assembly that can blow cool the area where the rolled piece 23 and the film 30 contact.

When the film 30 is used, the number of avoiding parts 31 required to be formed on the film 30 and the distance between two adjacent battery lamination areas are determined according to the number of battery lamination areas and the distance between the two adjacent battery lamination areas, the number of rolling parts 23 and the distance between the two adjacent avoiding parts 31 required to be formed on the film 30 are further determined, the heat insulation member 24 is arranged along the axial width of the roller 21 in a sleeved mode, then the rolling parts 23 and the heat insulation member 24 are arranged on the roller 21 in a sleeved mode, the heat insulation member 24 is correspondingly arranged between the two adjacent rolling parts 23, then the displacement adjusting member 25 is detachably arranged at least one end of the axial direction of the roller 21 to fix the installation position of the rolling parts 23 on the roller 21, when deviation exists between the installation position of the rolling parts 23 on the roller 21 and the position of the film 30 required to be formed with the avoiding parts 31, the rolling parts 23 can be adjusted along the axial installation position of the roller 21, finally the driving device drives the roller 21 to move downwards through the driving device, so that the rolling parts 23 are driven to press the film 30 downwards, the driving device further drives the roller 21 to roll, the rolling parts 23 can roll on the film 30, and the rolling parts 23 can be heated and the thickness of the film 30 can be softened along the direction when the rolling parts 23 are contacted with the rolling parts 23, and the thickness of the rolling parts 31 are contacted with each other, and the rolling parts can be softened, and the thickness of the film 30 can be reduced, and the thickness of the film can be reduced, and the film can be rolled and the film 30 is rolled and the thickness can be rolled and the rolled.

Compared with the prior art, in the embossing device 20 provided by the application, the roller 21 is provided with at least one rolling piece 23 and at least one heat insulation piece 24, the rolling piece 23 and the heat insulation piece 24 are sequentially arranged at intervals, the roller 21 drives the rolling piece 23 to rotate, the contact area of the rolling piece 23 and the film 30 is reduced, the film 30 is prevented from being adhered to the rolling piece 23 after being melted, and meanwhile, the roller 21 can be provided with a plurality of rolling pieces 23, so that a plurality of avoidance parts 31 can be formed on the film 30 in a rolling way, and the embossing efficiency of forming a plurality of avoidance parts 31 on the film 30 is greatly improved. In addition, the heat insulating member 24 is disposed between two adjacent rolling members 23, so that heat loss generated by the heater 22 is avoided, heat is prevented from radiating to the non-avoidance portion 32 area on the film 30, the formation position of the avoidance portion 31 on the film 30 is ensured to always correspond to the lamination area of the battery plate, and the avoidance portion 31 is formed uniformly on the film 30.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (12)

1. An embossing device is characterized by comprising a roller, a heater, a rolling piece and a heat insulation piece;

The heater is arranged in the roller and is coaxially arranged with the roller;

The rolling shaft is provided with at least one rolling piece and at least one heat insulation piece, and the rolling pieces and the heat insulation pieces are sequentially arranged at intervals;

The roller is of a polygonal column structure, the heat insulation piece is of a round tube shape, a round opening matched with the circumcircle of the roller is formed along the axis of the heat insulation piece, and a closed heat insulation space is formed among the side wall of the roller, the inner wall of the round opening and the side wall of the roller.

2. An embossing apparatus as set forth in claim 1, wherein the rolling member and/or the heat insulating member are removably sleeved on the roller.

3. An embossing device as claimed in claim 1 or 2, characterized in that,

The rolling piece is provided with a polygonal opening matched with the rolling shaft along the axis of the rolling piece.

4. An embossing apparatus as set forth in claim 3, wherein the roller is provided with a receiving cavity along an axis thereof, and the heater is received in the receiving cavity.

5. The embossing device of claim 4, wherein the diameter of the circumcircle of the roller is 70 mm-90 mm, and the diameter of the accommodating cavity is 10 mm-20 mm.

6. An embossing apparatus as set forth in claim 3, wherein the rolling member is in the shape of a disk, and the outer diameter of the rolling member is 95mm to 115mm.

7. The embossing apparatus as set forth in claim 6, wherein the outer circumferential surface and/or the side surface of the rolling member is further coated with a release coating, which is a polytetrafluoroethylene coating or a ceramic coating.

8. An embossing apparatus as set forth in claim 3, wherein the roller and/or the roller member is made of any one of stainless steel, titanium metal or titanium alloy.

9. The embossing device of claim 5, wherein the outer diameter of the heat insulating member is 90 mm-110 mm, the diameter of the circular opening is 70 mm-90 mm, and the diameter of the circular opening is greater than or equal to the diameter of the circumcircle of the roller.

10. The embossing apparatus as set forth in claim 9, wherein the heat insulator is polytetrafluoroethylene.

11. The embossing apparatus as set forth in claim 1 or 2, wherein at least one end of the roller in the axial direction is further provided with a displacement regulating member for regulating an axial installation position of the rolling member along the roller.

12. The embossing apparatus of claim 11, wherein the displacement adjustment member comprises a fixed disk, a fastener, and an adjustment member;

the fixed disc is provided with a locking hole and an adjusting hole;

one end of the fastener passes through the locking hole and then is connected with the rolling shaft, and one end of the adjusting piece passes through the adjusting hole and then is abutted against the rolling piece;

And one end of the adjusting piece, which is close to the rolling piece, is connected with an elastic piece.