CN219563425U - Stamping device and processing equipment - Google Patents

Abstract

The utility model relates to the technical field of stamping equipment, in particular to a stamping device and processing equipment; the parallelism between one side of the pressing block facing the supporting surface and the thickness of the material belt are limited, so that the material belt is kept tensioned in the stamping process, dislocation sliding of the material belt on the supporting surface is reduced, and generation of burrs is reduced.

Description

Stamping device and processing equipment

Technical Field

The utility model relates to the technical field of stamping equipment, in particular to a stamping device and processing equipment.

Background

In the course of working of battery, positive plate and negative plate are placed in range upon range of with the diaphragm, reheat pressurization is in order to pressfitting and is formed battery cap, in order to prevent contact short circuit between positive plate and the negative plate, the diaphragm needs the location to be placed between positive plate and the negative plate, and the diaphragm is usually in specific mill by the material area cutting or blanking formation, in the current stamping die, stamping forming's diaphragm produces the burr easily, and the specification of present battery is small-size design, the precision requirement to the size is high, the diaphragm has the burr to be unfavorable for the location laminating between positive plate and the negative plate, influence battery cap's pressfitting effect easily.

Disclosure of Invention

The utility model mainly aims to provide a stamping device, which aims to solve the technical problem of how to improve burrs generated during production of diaphragm sheets on a production line.

In order to achieve the above object, the present utility model provides a stamping device for stamping a material strip into an annular diaphragm sheet, the stamping device including a stamping die and a material winding mechanism; the stamping die comprises a supporting table, a pressing block, a stamping die cutter and a vacuum mechanism; the supporting table is provided with a supporting surface, and the supporting surface is provided with a first punching hole and a second punching hole; the pressing block is movably arranged on the supporting table and positioned on one side of the supporting surface so as to be close to or far away from the supporting surface; the pressing block is used for pressing and fixing the material belt on the supporting surface so that the material belt covers the first punching hole and the second punching hole; the die cutter comprises a first cutter and a second cutter, and the cutting area of the second cutter is larger than that of the first cutter; the first cutter is movably arranged on the supporting table and is opposite to the first die hole so as to extend into or withdraw from the first die hole; the second cutter is movably arranged on the supporting table and is opposite to the second die hole so as to extend into or withdraw from the second die hole; the first cutter is used for cutting a hollowed-out area from the material belt when extending into the first punching hole; the second cutter is used for extending into the second punching hole when the hollowed-out area falls into the projection of the second punching hole so as to cut the diaphragm from the periphery of the hollowed-out area of the material belt; the material rolling mechanism comprises an unreeling component and a reeling component, wherein the unreeling component is used for unreeling the material strips before being cut, and the reeling component is used for reeling the material strip residues after being cut; the supporting table is positioned on the material path of the material belt so as to enable the material belt to pass through the supporting surface; the thickness of the material belt is a, and the parallelism b between one side of the pressing block close to the supporting table and the supporting surface meets 0.125x-0.0375 b-0.01x+0.023.

Optionally, the second cutter is provided with a communicating air passing hole and an air passing channel, and the air passing hole is arranged at the edge end of the second cutter; the vacuum mechanism is arranged on the supporting table, the air passage is communicated with a vacuum port of the vacuum mechanism, and the vacuum mechanism is used for adjusting the vacuum degree of the air passage.

Optionally, the stamping device further includes a first passing roller, the first passing roller is rotatably installed on the supporting table, the first passing roller is disposed on one side of the first die hole away from the second die hole, and the first passing roller is used for winding a material belt between the unreeling assembly and the first die hole.

Optionally, the stamping device further comprises a mounting shaft, and the first passing roller is in rotatable fit with the mounting shaft; the stamping device further comprises an elastic piece, and the elastic piece enables the mounting shaft to be abutted and mounted on the supporting surface, so that the first material passing roller can enable the material belt to be abutted and mounted on the supporting surface.

Optionally, the stamping device further comprises a clamping assembly, and the clamping assembly is arranged between the unreeling assembly and the first passing roller; the clamping assembly comprises a mounting table and a clamping piece, a feeding gap is formed between the clamping piece and the mounting table, and the feeding gap is used for the material belt to pass through; the clamping piece is movably arranged on the mounting table so as to clamp the material belt to move when the material rolling mechanism acts.

Optionally, the stamping device further includes a second passing roller, the second passing roller is rotatably mounted on the supporting table, the second passing roller is disposed on a side, away from the first stamping hole, of the second stamping hole, and the second passing roller is used for winding a material belt between the second stamping hole and the winding component.

Optionally, the unreeling component and the reeling component are located on the same side of the stamping die, and the reeling component is located above the unreeling component; the stamping device further comprises a third passing roller rotatably mounted on the supporting table, the third passing roller is located above the second passing roller, and the third passing roller is used for winding the residual material of the material tape, which is fed between the second passing roller and the winding assembly.

Optionally, the supporting surface is provided with a feeding groove, the feeding groove is used for feeding the material, the first punching hole and the second punching hole are formed in the bottom of the feeding groove; the briquetting comprises a crimping part, and the crimping part is used for crimping and fixing the material belt at the bottom of the feeding groove.

Optionally, the material rolling mechanism further comprises a tensioning roller, wherein the tensioning roller is installed between the unreeling assembly and the stamping die, and the tensioning roller is used for tensioning the material belt between the unreeling assembly and the stamping die.

The utility model also proposes a processing device comprising a punching device as described above.

In the stamping device, the relation between the parallelism of one side of the pressing block facing the supporting surface and the thickness of the material belt is limited, so that the material belt is kept tensioned in the stamping process, the dislocation sliding of the material belt on the supporting surface is reduced, and the generation of burrs is reduced. On the other hand, the second cutter is provided with the air passing hole and the air passing channel, and the vacuum degree of the air passing channel is regulated through the vacuum mechanism, so that after the second cutter cuts off the diaphragm sheet from the material belt, the vacuum mechanism can enable the air passing hole to absorb the diaphragm sheet by increasing the vacuum degree of the air passing channel, thereby absorbing and positioning the diaphragm sheet on the second cutter, and the absorbed and positioned diaphragm sheet can be directly transferred to a production line of a battery cap to be put into a lamination process of the battery cap (for example, directly laminated on a prepared electrode sheet); therefore, in the process of pressing the battery cap, the diaphragm can be cut and used without being machined in advance or being fed and positioned again, so that the production and positioning of the diaphragm on a production line are realized. In addition, in the cutting process of material area, the material area of waiting to cut through unreeling subassembly to and the material area clout after the rolling is cut through the rolling subassembly, can make the unreeling process of material area, the cutting process of material area and the cutting process of material area clout can go on in step to simplify the material area material loading and the process of clout arrangement, thereby can further improve the production efficiency of battery cap.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first schematic view of an embodiment of a stamping apparatus of the present utility model;

FIG. 2 is a second schematic view of an embodiment of a stamping device according to the present utility model;

FIG. 3 is a schematic view of a process of cutting a web into membrane sheets according to the present utility model;

FIG. 4 is a schematic view of an embodiment of a stamping die according to the present utility model;

FIG. 5 is a schematic top view of the stamping die of FIG. 4;

FIG. 6 is a schematic cross-sectional view of the stamping die of FIG. 5 taken along the direction A-A;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a schematic view of a second tool according to the utility model;

FIG. 9 is a schematic front view of the second tool of FIG. 8;

FIG. 10 is a schematic cross-sectional view of the second tool of FIG. 9 taken along the direction B-B;

fig. 11 is a schematic structural view of a clamping assembly according to the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name	Reference numerals	Name of the name
						10	Material belt	11	Hollow area	12	Diaphragm sheet
20	Supporting table	21	Supporting surface	22	First die hole
						23	Second die hole	30	Briquetting machine	41	First tool
42	Second tool	421	Air passing hole	422	Overgas channel
						26	Trough for walking	31	Crimping part	50	Coiling mechanism
51	Unreeling assembly	52	Winding assembly	60	First passing roller
						61	Mounting shaft	70	Clamping assembly	71	Mounting table
72	Clamping piece	73	Feed gap	80	Second passing roller
						90	Third passing roller	100	Stamping die	53	Tensioning roller
54	Fixing plate	62	Mounting member

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a stamping device, which is used for stamping a material belt 10 to form an annular diaphragm sheet 12, wherein a hollowed-out area 11 is formed inside the diaphragm sheet 12.

In the embodiment of the present utility model, as shown in fig. 1, 2 and 4 to 7, fig. 1 is a schematic first structural diagram of an embodiment of a stamping device of the present utility model; FIG. 2 is a second schematic view of an embodiment of a stamping device according to the present utility model; fig. 4 is a schematic structural diagram of an embodiment of a stamping die 100 according to the present utility model;

FIG. 5 is a schematic top view of the stamping die 100 of FIG. 4; FIG. 6 is a schematic cross-sectional view of the stamping die 100 of FIG. 5 along the direction A-A; fig. 7 is a partial enlarged view at a in fig. 6.

The stamping device comprises a stamping die 100 and a coil stock mechanism 50, wherein the stamping die 100 comprises a supporting table 20, a pressing block 30, a die cutter and a vacuum mechanism. The support table 20 has a support surface 21, and the support surface 21 is provided with a first die hole 22 and a second die hole 23. The pressing block 30 is movably mounted to the support table 20 at one side of the support surface 21 to be close to or apart from the support surface 21. The pressing block 30 is used for pressing the material belt 10 onto the supporting surface 21, so that the material belt 10 covers the first die hole 22 and the second die hole 23. The die cutter includes a first cutter 41 and a second cutter 42, and the cutting area of the second cutter 42 is larger than the cutting area of the first cutter 41. The first cutter 41 is movably mounted to the support table 20 and disposed opposite the first die hole 22 to extend into or withdraw from the first die hole 22. The second cutter 42 is movably mounted to the support table 20 and disposed opposite the second die hole 23 to extend into or withdraw from the second die hole 23. The first cutter 41 is used for cutting the hollow area 11 from the material belt 10 when extending into the first die hole 22, and the second cutter 42 is used for extending into the second die hole 23 when the hollow area 11 falls into the projection of the second die hole 23, so as to cut the diaphragm 12 from the periphery of the hollow area 11 of the material belt 10. The material winding mechanism 50 comprises an unreeling component 51 and a reeling component 52, the unreeling component 51 is used for unreeling the material belt 10 before being cut, the reeling component 52 is used for reeling the surplus material of the material belt 10 after being cut, and the supporting table 20 is located on the material conveying path of the material belt 10 so that the material belt 10 passes through the supporting surface 21.

The thickness of the material belt is a, and the parallelism b between one side of the pressing block close to the supporting table and the supporting surface meets 0.125x-0.0375 b-0.01x+0.023.

When the stamping die punches, the pressing block 30 presses down to support the material belt 10 on the supporting surface 21, when the parallelism difference between one side of the pressing block 30 facing the supporting surface 21 and the supporting surface 21 is large, the pressing block 30 cannot fully tension the material belt 10, so that the material belt 10 can slide in a dislocation manner on the supporting surface 21 when a cutter punches the material belt 10, burrs or shape deformation is generated on the diaphragm sheet 12, and the dimensional accuracy is affected. Specifically, in the present utility model, the thickness of the material belt 10 is selected to be in the range of 0.05mm to 0.3mm, and preferably, the parallelism between the side of the pressing block 30 facing the supporting surface 21 and the supporting surface 21 is not more than 0.02mm, so that the quality of the diaphragm sheet 12 is ensured in one step.

Further, in the processing of the stamping die part, the flatness between the pressing block 30 and the supporting table 20 can be ensured by improving the precision of the part, for example, the processing precision of the processing equipment is improved, in the actual processing, a numerical control milling machine is mostly adopted for processing, at this time, the processing precision can be ensured by adjusting the feeding amount and the feeding speed of the milling cutter in the finish milling process, or the finish processing is performed again on the processing equipment with higher plane processing precision such as a grinding machine after the milling process is completed, however, it should be understood that the specific processing modes of the pressing block 30 and the supporting table 20 are not limited, so that the flatness between the pressing block 30 and the supporting table 20 can be within a set range.

In the present embodiment, the annular diaphragm 12 is illustrated as concentric rings, and it should be understood that in other embodiments of the present utility model, the diaphragm 12 may also have a polygonal annular structure or an eccentric annular shape, and only the specific shapes and positions of the first cutter 41 and the second cutter 42 need to be changed.

The second cutter 42 is provided with a communicating air passing hole 421 and an air passing channel 422, the air passing hole 421 is arranged at the edge end of the second cutter 42, the vacuum mechanism is arranged on the supporting table 20, the air passing channel 422 is communicated with a vacuum port of the vacuum mechanism, and the vacuum mechanism is used for adjusting the vacuum degree of the air passing channel 422. After the second cutter 42 cuts the diaphragm 12 from the material belt, the diaphragm 12 can be sucked and fixed on the second cutter 42 through the vacuum mechanism, so that the positioning production of the diaphragm 12 is realized, and the diaphragm 12 on the second cutter 42 can be directly conveyed to subsequent processing equipment for processing without positioning feeding.

In this embodiment, the supporting surface 21 may be a top surface of the supporting table 20, or may be a side surface of the supporting table 20, and in this embodiment, the supporting surface 21 is taken as an example of the top surface of the supporting table 20. The material belt 10 can move along the supporting surface 21, and the first die holes 22 and the second die holes 23 are arranged along the moving direction of the material belt 10, namely, the material belt 10 passes through the first die holes 22 and then passes through the second die holes 23 when moving along the supporting surface 21. The movement direction of the pressing block 30 is perpendicular to the supporting surface 21, for example, the pressing block 30 is installed above the supporting surface 21 and can perform lifting movement in the vertical direction. The pressing block 30 can press and fix the material belt 10 when being abutted against the supporting surface 21, and can release the material belt 10 when the pressing block 30 is separated from the supporting surface 21. The stamping die 100 further includes a first driving device mounted on the support table 20, where the first driving device is used to drive the pressing block 30 to move, so that the pressing block 30 can press or loosen the material belt 10.

The first cutter 41 and the second cutter 42 are installed above the supporting surface 21 and can move up and down in the axial direction of the first die hole 22 and the second die hole 23. The first cutter 41 and the second cutter 42 may be arranged in a column shape, the cutting edge of the first cutter 41 is arranged at the peripheral edge of the end face of the first cutter 41, the cutting edge of the second cutter 42 is arranged at the peripheral edge of the end face of the second cutter 42, and the end face of the second cutter 42 is larger than the end face of the first cutter 41, so that the cutting range of the second cutter 42 is larger than the cutting range of the first cutter 41. The stamping die 100 further includes a second driving device mounted to the support table 20 for driving the first cutter 41 and the second cutter 42 to move, thereby causing the first cutter 41 and the second cutter 42 to cut the material tape 10.

As shown in fig. 8 to 10, fig. 8 is a schematic structural view of a second cutter 42 according to the present utility model; FIG. 9 is a schematic front view of second cutter 42 of FIG. 8; fig. 10 is a schematic cross-sectional view of second cutter 42 in fig. 9 taken along direction B-B.

The gas passage 422 extends in the axial direction of the second cutter 42 and penetrates an end of the second cutter 42 away from the blade thereof. The vacuum port of the vacuum mechanism is communicated with the air passage 422 through the top end of the second cutter 42, and the vacuum mechanism can generate negative pressure at the air passage 421 by adjusting the vacuum degree of the air passage 422, so that the diaphragm 12 cut by the second cutter 42 can be adsorbed. The number of the air passing holes 421 may be plural, the plural air passing holes 421 are arranged at intervals along the circumferential direction of the second cutter 42, the number and positions of the air passing channels 422 correspond to the air passing holes 421, and the air outlet of the vacuum mechanism is simultaneously communicated with the plural air passing channels 422. In this way, the adsorption position to the diaphragm 12 can be increased, and the stress of the diaphragm 12 is balanced, so that the adsorption stability to the diaphragm 12 is improved.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating a process of cutting out a membrane sheet 12 from a material strip 10 according to the present utility model. When the stamping die 100 works, the material belt 10 passes through the first stamping hole 22, and when the material belt 10 covers the first stamping hole 22, the pressing block 30 descends to hold the material belt 10, so that the material belt 10 is ensured not to shift or deform when being acted by the stamping tool. After the pressing block 30 presses the material belt 10, the first cutter 41 extends into the first punching hole 22 and pokes the material belt 10 to cut off the leftovers from the material belt 10. In this way, the first cutter 41 cuts the hollowed-out area 11 on the material belt 10.

After the material belt 10 is cut out of the hollowed-out area 11, the first cutter 41 is withdrawn from the first punching hole 22, the pressing block 30 loosens the material belt 10, and the material belt 10 continues to move towards the second punching hole 23. When the material belt 10 moves to the position that the hollowed-out area 11 is located in the projection of the second punching hole 23, the pressing block 30 presses the material belt 10 again, at this time, the second cutter 42 stretches into the second punching hole 23, and the annular diaphragm 12 is cut out at the periphery of the hollowed-out area 11 on the material belt 10.

When the second cutter 42 cuts the diaphragm 12, the vacuum mechanism is turned on to increase the vacuum degree of the air passage 422, and at this time, the air passing holes 421 generate negative pressure on the diaphragm 12, so that the diaphragm 12 can be adsorbed and fixed on the second cutter 42. After the membrane sheet 12 is sucked and fixed, the second cutter 42 may transfer the membrane sheet 12 to a production line of battery caps, and directly laminate the membrane sheet 12 on the electrode sheet. Of course, in the case where the coaxiality deviation between the electrode plates is allowed, the carrying jig carrying the electrode plates may be directly conveyed to the lower part of the second cutter 42, then the vacuum mechanism is closed, the air passing holes 421 and the air passing channels 422 break the vacuum, and at this time, the diaphragm 12 may directly fall on the electrode plates.

The number of the first die holes 22 and the second die holes 23 may be plural, and the plural first die holes 22 and second die holes 23 are arranged along the moving direction of the material belt 10. The number and positions of the first cutters 41 and the second cutters 42 correspond to the first punch holes 22 and the second punch holes 23, respectively. Thus, the first cutters 41 can move simultaneously, and cut out the hollow areas 11 from the material belt 10 at one time. The plurality of second cutters 42 may also move simultaneously and cut a plurality of membrane sheets 12 from the material web 10 at a time, thereby improving the production efficiency of the stamping die 100. It should be appreciated that the plurality of second cutters 42 are each provided with a respective overair aperture 421 and overair passage 422, and that the vacuum mechanism may be in simultaneous communication with the overair passages 422 of the plurality of second cutters 42.

The material strip 10 is usually fed in a roll form, so that the material strip 10 needs to be unwound before the material strip 10 is cut. The material strip 10 also needs to be fed along with the change of the cutting degree in the cutting process. The remainder of the strip 10 after cutting also needs to be wound up for convenient subsequent processing.

The roll mechanism 50 may include a fixed plate 54, and the unwind assembly 51 and the wind-up assembly 52 are mounted to the fixed plate 54. The unreeling assembly 51 is used for unreeling the rolled material strip 10, wherein the unreeling assembly 51 may comprise an unreeling roller, and the rolled material strip 10 may be gradually released along with the rotation of the unreeling roller after the rolled material strip 10 is mounted on the unreeling roller. The winding component 52 is configured to wind the cut surplus material of the material tape 10, where the winding component 52 may include a winding roller and a winding drum mounted on the winding roller, and the winding drum may rotate along with the winding roller, so as to gradually wind the surplus material of the material tape 10.

The unreeling component 51 and the reeling component 52 can be installed on two opposite sides of the stamping die 100, or on the same side of the stamping die 100, and are not limited herein, and only the material tape 10 needs to be fed to the stamping die 100 and then to the reeling component 52 after unreeling from the unreeling component 51. The unreeling component 51 and the reeling component 52 synchronously rotate, so that the material belt 10 can be driven to automatically feed at the stamping die 100, the position switching at the first stamping hole 22 and the second stamping hole 23 is realized, and the automatic feeding and cutting are realized by matching with the stamping die 100. That is, the material tape 10 is unreeled, punched and cut, and wound, so that the material tape 10 can be released and cut and wound, thereby simplifying the processes of feeding and finishing the material tape 10, and further improving the production efficiency of the battery cap.

During the process of feeding the material belt 10 from the unreeling component 51 to the reeling component 52, other passing rollers are not required to be wound, and feeding can be assisted by the other passing rollers. As shown in fig. 4, 6 and 7, the stamping device further includes a first passing roller 60, the first passing roller 60 is rotatably mounted on the supporting table 20, the first passing roller 60 is disposed on a side of the first die hole 22 away from the second die hole 23, and the first passing roller 60 is used for winding the material belt 10 between the unreeling assembly 51 and the first die hole 22.

The first passing roller 60 may be mounted on the supporting surface 21, and a first passing gap is formed between the first passing roller 60 and the supporting surface 21, and the material belt 10 passes through the first passing gap and then goes to the first punching hole 22 after being unreeled from the unreeling assembly 51. The first passing roller 60 can limit the material belt 10 at a position relatively close to the supporting surface 21, so that the material belt 10 can accurately cover the first punching hole 22 and the second punching hole 23, and the punching and cutting effects are improved. In addition, the first passing roller 60 can play a limiting role on the material belt 10 and play a role in assisting feeding through rotation, so that the material belt 10 is prevented from being clamped, and the stability of the punching and cutting process is further ensured.

Specifically, as shown in fig. 4, the stamping device further includes a mounting shaft 61, the first passing roller 60 is rotatably matched with the mounting shaft 61, and the stamping device further includes an elastic member, where the elastic member supports and mounts the mounting shaft 61 on the supporting surface 21, so that the first passing roller 60 supports and mounts the material belt 10 on the supporting surface 21.

The stamping device further comprises a mounting piece 62, the mounting piece 62 is fixed on the supporting surface 21, a chute is formed in the mounting piece 62, and the end portion of the mounting shaft 61 can be lifted in the chute. The elastic member may be a spring, one end of which is connected to the mounting member 62 and the other end of which is connected to the end of the mounting shaft 61. When the material strip 10 passes through the first passing roller 60, a force away from the supporting surface 21 is generated on the first passing roller 60, and the force is transmitted to the elastic member by the mounting shaft 61 to deform the elastic member, so that the elastic member also applies a reverse elastic restoring force to the mounting shaft 61, and the elastic restoring force acts on the material strip 10 through the first passing roller 60 to support the material strip 10 in a direction approaching the supporting surface 21; in this way, the feeding stability of the strip 10 can be further ensured. In addition, the first material passing roller 60 capable of elastically abutting against the material belt 10 can also play a role in tensioning and feeding the material belt 10, so that the material belt 10 is prevented from slipping, and the material belt 10 can be effectively fed to the first punching hole 22 when passing through the first material passing roller 60.

As shown in fig. 1, 2 and 11, fig. 11 is a schematic structural view of a clamping assembly 70 according to the present utility model. The stamping device further comprises a clamping assembly 70, wherein the clamping assembly 70 is arranged between the unreeling assembly 51 and the first passing roller 60; the clamping assembly 70 includes a mounting table 71 and a clamping member 72, the clamping member 72 being movably mounted to the mounting table 71, the clamping member 72 being configured to clamp the web 10 to the mounting table 71.

The clamping assembly 70 is located on a feeding path of the material belt 10 from the unreeling assembly 51 towards the stamping die 100, and the clamping assembly 70 is used for clamping the material belt 10 in the feeding process of the material belt 10, so that the material belt is prevented from slipping in the feeding process, and the precision between the hollowed-out area 11 and the outer profile of the diaphragm 12 is ensured.

Specifically, a feeding gap 73 is formed between the clamping member 72 and the mounting table 71, and the feeding gap 73 is used for passing the material belt 10, and the clamping member 72 can be away from or close to the mounting table 71 so as to clamp the material belt 10 when approaching the mounting table 71. The clamping member 72 may be installed above the mounting table 71, and the clamping member 72 may be lifted up and down with respect to the mounting table 71, so that the clamping member 72 can clamp the material tape 10 while descending and unclamp the material tape 10 while ascending. The clamping assembly 70 further comprises a pneumatic guide rail, and the mounting table 71 is mounted on a sliding block of the pneumatic guide rail, so that the mounting table 71 and the clamping piece 72 can drive the material belt 10 to slide. When the material winding mechanism 50 needs to move, the clamping piece 72 approaches the mounting table 71 and supports the material belt 10 on the mounting table 71, the mounting table 71 slides with the material belt 10, and the material winding mechanism 50 receives and winds the material. After the feeding of one stroke is completed, the clamping piece 72 is far away from the mounting table 71 to loosen the material belt 10, and the mounting table 71 drives the clamping piece 72 to slide and reset to wait for the next feeding.

As shown in fig. 4, 6 and 7, the stamping device further includes a second passing roller 80, the second passing roller 80 is rotatably mounted on the supporting table 20, the second passing roller 80 is disposed on a side of the second stamping hole 23 away from the first stamping hole 22, and the second passing roller 80 is used for winding the material belt 10 between the second stamping hole 23 and the winding assembly 52.

The second passing roller 80 may be mounted on the supporting surface 21, and a second passing gap is formed between the second passing roller 80 and the supporting surface 21, and the remainder of the material belt 10 passes through the second passing gap and then goes to the winding assembly 52. The second passing roller 80 can limit the material belt 10 at a position relatively close to the supporting surface 21, so that the material belt 10 can accurately cover the first punching holes 22 and the second punching holes 23, and the punching and cutting effects are improved. In addition, the second passing roller 80 can also play a role of auxiliary feeding through rotation so as to prevent the material belt 10 from being clamped, and further ensure the stability of the punching and cutting process.

Illustratively, as shown in fig. 1 and 2, the unwind assembly 51 and the wind-up assembly 52 are located on the same side of the stamping die 100, and the wind-up assembly 52 is located above the unwind assembly 51. The stamping device further comprises a third passing roller 90 rotatably mounted on the supporting table 20, the third passing roller 90 is located above the second passing roller 80, and the third passing roller 90 is used for winding the surplus material of the material belt 10 moving between the second passing roller 80 and the winding assembly 52.

After the material belt 10 is unreeled from the unreeling component 51, the material belt 10 is punched and cut through the punching die 100, and the residual material of the material belt 10 formed after punching and cutting is wound back to the reeling component 52 positioned above the unreeling component 51 through the third passing roller 90, so that the unreeling component 51 and the reeling component 52 can be arranged on the same side of the punching die 100 in a concentrated manner, and the overall structure layout of the punching device is more reasonable.

The first passing roller 60, the second passing roller 80 and the third passing roller 90 can convert sliding friction during movement of the material belt 10 into rolling friction, so that abrasion of the material belt 10 is reduced, and the second passing roller 80 and the third passing roller 90 also play a role in changing movement tracks of the material belt 10, so that the structural layout is more reasonable.

As shown in fig. 4, 6 and 7, the supporting surface 21 is provided with a feeding groove 26, the feeding groove 26 is used for feeding the feeding belt 10, the first die hole 22 and the second die hole 23 are formed at the bottom of the feeding groove 26, and the pressing block 30 comprises a pressing part 31, and the pressing part 31 is used for pressing and fixing the feeding belt 10 at the bottom of the feeding groove 26. The material feeding groove 26 extends along the arrangement direction of the first punching hole 22 and the second punching hole 23, and the material belt 10 is fed in the material feeding groove 26, so that the material belt 10 can be conveniently limited, and the material belt 10 is prevented from deviating from the first punching hole 22 and the second punching hole 23. At this time, the two surfaces having the parallelism requirement are the bottom of the trough 26 and the top of the press-contact portion 31, that is, the sides of the trough 26 near the supporting surface 21 of the trough bottom and the press-contact portion 31.

As illustrated in fig. 1 and 2, the winding mechanism 50 further includes a plurality of tension rollers 53, the tension rollers 53 being installed between the winding mechanism 50 and the stamping die 100, the tension rollers 53 being used to tension the material tape 10 between the winding mechanism 50 and the stamping die 100. The tensioning roller 53 is rotatably installed on the fixing plate 54, and the material belt 10 is firstly wound on the tensioning roller 53 and then fed to the stamping die 100 after being unreeled from the unreeling assembly 51, so that the material belt is tensioned, and the accuracy of the stamping and cutting process is improved. Further, the partial tension roller 53 is slidably mounted on the fixing plate 54 through a sliding rail, and the material belt 10 is tightened to prevent slipping by sliding the tension roller 53, so that the conveying precision of the material belt 10 is ensured.

The utility model also provides a processing device, which comprises a stamping device, wherein the specific structure of the stamping device refers to the embodiment, and because the processing device adopts all the technical schemes of all the embodiments, the processing device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. Wherein the processing equipment is used for laminating and pressing the positive electrode plate and the negative electrode plate through the diaphragm 12 to form the battery cap.

In the stamping device, the relation between the parallelism of the side of the pressing block 30 facing the supporting surface 21 and the thickness of the material belt 10 is limited, so that the material belt 10 is kept tensioned in the stamping process, the dislocation sliding of the material belt 10 on the supporting surface 21 is reduced, and the generation of burrs is reduced. On the other hand, in the utility model, the second cutter 42 is provided with the air passing holes 421 and the air passing channels 422, and the vacuum degree of the air passing channels 422 is regulated by the vacuum mechanism, so that after the second cutter 42 cuts and removes the diaphragm sheet 12 from the material belt 10, the vacuum mechanism can enable the air passing holes 421 to absorb the diaphragm sheet 12 by increasing the vacuum degree of the air passing channels 422, thereby absorbing and positioning the diaphragm sheet 12 on the second cutter 42, and the absorbed and positioned diaphragm sheet 12 can be directly transferred to a production line of battery caps to be put into a lamination process of the battery caps (for example, directly laminated on the prepared electrode sheets); therefore, in the process of pressing the battery cap, the diaphragm 12 can be cut and used without being processed in advance or being fed and positioned again, so that the production and positioning of the diaphragm on a production line are realized. In addition, in the cutting process of the material belt 10, the material belt 10 to be cut is unreeled through the unreeling component 51, and the residual material of the material belt 10 after cutting is reeled through the reeling component 52, so that the unreeling process of the material belt 10, the cutting process of the material belt 10 and the cutting process of the residual material of the material belt 10 can be synchronously carried out, the processes of feeding the material belt 10 and finishing the residual material are simplified, and the production efficiency of the battery cap can be further improved.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A stamping device for stamping a material strip into an annular diaphragm sheet, the stamping device comprising a stamping die and a material coiling mechanism;

the stamping die comprises a supporting table, a pressing block, a stamping die cutter and a vacuum mechanism;

the supporting table is provided with a supporting surface, and the supporting surface is provided with a first punching hole and a second punching hole;

the pressing block is movably arranged on the supporting table and positioned on one side of the supporting surface so as to be close to or far away from the supporting surface; the pressing block is used for pressing and fixing the material belt on the supporting surface so that the material belt covers the first punching hole and the second punching hole;

the die cutter comprises a first cutter and a second cutter, and the cutting area of the second cutter is larger than that of the first cutter; the first cutter is movably arranged on the supporting table and is opposite to the first die hole so as to extend into or withdraw from the first die hole; the second cutter is movably arranged on the supporting table and is opposite to the second die hole so as to extend into or withdraw from the second die hole;

the first cutter is used for cutting a hollowed-out area from the material belt when extending into the first punching hole; the second cutter is used for extending into the second punching hole when the hollowed-out area falls into the projection of the second punching hole so as to cut the diaphragm from the periphery of the hollowed-out area of the material belt;

the material rolling mechanism comprises an unreeling component and a reeling component, wherein the unreeling component is used for unreeling the material strips before being cut, and the reeling component is used for reeling the material strip residues after being cut; the supporting table is positioned on the material path of the material belt so as to enable the material belt to pass through the supporting surface;

the thickness of the material belt is a, and the parallelism b between one side of the pressing block close to the supporting table and the supporting surface meets 0.125x-0.0375 b-0.01x+0.023.

2. The stamping device of claim 1, wherein the second cutter is provided with a communicating air passing hole and an air passing channel, and the air passing hole is arranged at the edge end of the second cutter;

the vacuum mechanism is arranged on the supporting table, the air passage is communicated with a vacuum port of the vacuum mechanism, and the vacuum mechanism is used for adjusting the vacuum degree of the air passage.

3. The stamping device of claim 1, further comprising a first pass roller rotatably mounted to the support table, the first pass roller disposed on a side of the first die aperture remote from the second die aperture, the first pass roller configured to allow a web between the unwind assembly and the first die aperture to be wound.

4. A stamping device as defined in claim 3, further comprising a mounting shaft, the first pass roller being rotatably engaged with the mounting shaft;

the stamping device further comprises an elastic piece, and the elastic piece enables the mounting shaft to be abutted and mounted on the supporting surface, so that the first material passing roller can enable the material belt to be abutted and mounted on the supporting surface.

5. A stamping device as in claim 3, further comprising a clamping assembly disposed between the unwind assembly and the first pass roller;

the clamping assembly comprises a mounting table and a clamping piece, a feeding gap is formed between the clamping piece and the mounting table, and the feeding gap is used for the material belt to pass through; the clamping piece is movably arranged on the mounting table so as to clamp the material belt to move when the material rolling mechanism acts.

6. The stamping device of claim 1, further comprising a second pass roller rotatably mounted to the support table, the second pass roller disposed on a side of the second die aperture remote from the first die aperture, the second pass roller configured to allow a web between the second die aperture and the take-up assembly to be wound.

7. The stamping device of claim 6, wherein the unwind assembly and the wind-up assembly are located on the same side of the stamping die, the wind-up assembly being located above the unwind assembly; the stamping device further comprises a third passing roller rotatably mounted on the supporting table, the third passing roller is located above the second passing roller, and the third passing roller is used for winding the residual material of the material tape, which is fed between the second passing roller and the winding assembly.

8. The stamping device of any one of claims 1 to 7, wherein the support surface is provided with a feed trough for feeding the feed belt, and the first and second die holes are provided at the bottom of the feed trough; the briquetting comprises a crimping part, and the crimping part is used for crimping and fixing the material belt at the bottom of the feeding groove.

9. The stamping device of claim 8, wherein the coil mechanism further comprises a tensioning roller mounted between the unwind assembly and the stamping die, the tensioning roller for tensioning the ribbon between the unwind assembly and the stamping die.

10. A processing apparatus comprising a press device as claimed in any one of claims 1 to 9.