CN212695210U - Punching device - Google Patents

Abstract

The utility model relates to a punching equipment, including terrace die and die, the die surface set up the shaping hole and with the guiding hole of shaping hole intercommunication, the terrace die has this somatic part and guide part, this somatic part has a die-cut end along the first direction, this die-cut end can with the die-cut cooperation in shaping hole, guide part fixed connection is in die-cut end, and the guide part is outstanding in the first direction in die-cut end, the guide part can cooperate with the guiding hole direction, but the relative die of terrace die is along first direction reciprocating motion, and the terrace die is along first direction removal in-process, guide part and die-cut end can stretch into guiding hole and shaping downthehole respectively in proper order. The clearance between guide part and the guiding hole is set according to the clearance between die-cut end and the shaping hole, and the guide part can collide with the die earlier, and can hinder the terrace die to continue to move towards the die after the guide part collides with the die to avoid die-cut end and die to collide, avoid the edge of a knife damage of die-cut end.

Description

Punching device

Technical Field

The utility model relates to a lithium battery processing equipment technical field especially relates to a die-cut equipment.

Background

A lithium ion battery is a rechargeable battery that mainly relies on lithium ions moving between a positive electrode and a negative electrode to operate, and is representative of modern high performance batteries. Lithium ion batteries have been widely used in large, medium, and small electric devices such as various electric tools.

In the production process of the lithium battery, the tabs need to be punched, and at present, a male die and a female die are usually matched for punching. However, in the existing punching mechanism, after long-time use, the position of the male die relative to the female die is easy to deviate, so that the knife edge of the male die collides with the female die during punching, and the knife edge of the male die is damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a punching device for avoiding collision between a knife edge and a female die, aiming at the problem that the knife edge of a male die of the existing punching mechanism may collide with the female die.

A die cutting apparatus comprising:

the surface of the female die is provided with a forming hole and a guide hole communicated with the forming hole; and

the male die is provided with a body part and a guide part, the body part is provided with a punching end along a first direction, the punching end can be matched with the forming hole in a punching way, the guide part is fixedly connected to the punching end and protrudes out of the punching end in the first direction, and the guide part can be matched with the guide hole in a guiding way;

the male die is arranged relative to the female die in a reciprocating manner along the first direction, and in the process that the male die moves relative to the female die along the first direction, the guide part and the punching end can sequentially and respectively extend into the guide hole and the forming hole.

Through setting up foretell die-cut equipment, the base material that will need die-cut, for example utmost point ear, place in the die and offer the side surface in shaping hole, and the base material covers part shaping hole at least, and when the terrace die removed along first direction, die-cut end can stretch into in the shaping hole to accomplish die-cut to the base material. Because the guide part protrudes out of the punching end in the first direction, the forming hole and the guide hole are both arranged on the same side surface of the female die, and the guide part can enter the guide hole before the punching end enters the forming hole.

The clearance between guide part and the guiding hole is set according to the clearance between die-cut end and the shaping hole, ensures that the relative position between terrace die and die takes place the skew, and the offset can lead to under the condition that die-cut end bumps with the die, the guide part also can bump with the die. So, the guide part can collide with the die earlier, and can hinder the terrace die to continue to move towards the die after guide part and die bump to avoid die-cut end and die bump, avoid the edge of a knife damage of die-cut end.

In one embodiment, the guide portions comprise at least two, and an orthographic projection of at least two of the guide portions on a plane perpendicular to the first direction is located within an orthographic projection of the die-cut end on a plane perpendicular to the first direction.

In one embodiment, the body portion defines a cutting slot extending along the first direction and penetrating through an end surface of the cutting end to form a cutting edge at the end surface of the cutting end.

In one embodiment, the punched groove is an arc-shaped groove.

In one embodiment, the punching groove comprises two punching grooves, and the two punching grooves are positioned on two opposite sides of the body part in a third direction perpendicular to the first direction.

In one embodiment, the punching blade includes a first section and a second section connected to each other, the first section and the second section are both disposed obliquely with respect to a plane perpendicular to the first direction, and a distance between a joint of the first section and the second section and the die is greater than a distance between other positions of the first section and the second section and the die.

In one embodiment, the first section and the second section are each 0.003mm-0.005mm in height in the first direction.

In one embodiment, the first and second segments are inclined at an angle of 3 ° to 5 ° relative to a plane perpendicular to the first direction.

In one embodiment, after the guide part extends into the guide hole, the gap between the guide part and the guide hole is not more than 0.001 mm.

In one embodiment, the punch die further comprises a driving member, wherein the driving member is in transmission connection with the punch die to drive the punch die to move back and forth relative to the die in the first direction.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a punching apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the male die of the die-cutting apparatus shown in FIG. 1;

fig. 3 is a schematic structural view of a concave die according to another embodiment of the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, a punching apparatus 100 according to an embodiment of the present invention includes a female die 10 and a male die 20.

The surface of the female die 10 is provided with a forming hole 12 and a guide hole 14 communicated with the forming hole 12.

The punch 20 has a body 22 and a guide 24. The body portion 22 has a blanking end 221 along the first direction, and the blanking end 221 is adapted to be in blanking engagement with the forming aperture 12. The guide portion 24 is fixedly connected to the blanking end 221 and protrudes from the blanking end 221 in the first direction. The guide portion 24 is in guiding engagement with the guide hole 14.

The male die 20 is disposed in a manner that the male die 20 is reciprocally movable along the first direction with respect to the female die 10, and the guide portion 24 and the punching end 221 may sequentially extend into the guide hole 14 and the forming hole 12, respectively, during the movement of the male die 20 along the first direction with respect to the female die 10.

Further, the first direction is an up-down direction shown in fig. 1, and particularly, when actually used, the first direction is a vertical direction.

Through setting up above-mentioned die-cut equipment, will need die-cut substrate, for example utmost point ear, place the one side surface that has seted up shaping hole 12 in die 10, and the substrate covers partial shaping hole 12 at least, and when terrace die 20 removed along the first direction, die-cut end 221 can stretch into in the shaping hole 12 to accomplish die-cut to the substrate. Since the guide portion 24 protrudes from the blanking end 221 in the first direction, and the molding hole 12 and the guide hole 14 are opened in the same side surface of the die 10, the guide portion 24 enters the guide hole 14 before the blanking end 221 enters the molding hole 12.

The clearance between the guide portion 24 and the guide hole 14 is set according to the clearance between the blanking end 221 and the molding hole 12, and the guide portion 24 and the guide hole 14 are set according to the standard that when the relative position between the punch 20 and the die 10 is shifted and the blanking end 221 and the die 10 collide with each other, the guide portion 24 also collides with the die 10. Thus, the guide portion 24 collides with the die 10 first, and the guide portion 24 collides with the die 10 and then hinders the punch 20 from moving towards the die 10, so as to avoid the collision between the punching end 221 and the die 10 and the damage to the edge of the punching end 221.

It should be noted that the above-mentioned fitting is such that the shape of the orthogonal projection of the piercing end 221 on the plane perpendicular to the first direction is the same as the shape of the molding hole 12, and a certain gap is present between the piercing end 221 and the molding hole 12 after the piercing end 221 extends into the molding hole 12, and similarly, the fitting is such that the shape of the orthogonal projection of the guide portion 24 on the plane perpendicular to the first direction is the same as the shape of the guide hole 14, and a certain gap is present between the guide portion 24 and the guide hole 14 after the guide portion 24 extends into the guide hole 14.

In some embodiments, the clearance between the pilot portion 24 and the pilot hole 14 after the pilot portion 24 protrudes into the pilot hole 14 is no more than 0.001mm, thereby ensuring the accuracy of the die cutting.

In some embodiments, the guides 24 include at least two, and an orthographic projection of the at least two guides 24 on a plane perpendicular to the first direction is located within an orthographic projection of the blanking end 221 on a plane perpendicular to the first direction. Thus, the corresponding guide hole 14 is located in the forming hole 12, that is, the forming hole 12 is actually formed on one side surface of the punch 20.

Further, the piercing end 221 has a first side 222 and a second side opposite in a second direction perpendicular to the first direction, and the piercing end 221 has a third side 224 and a fourth side opposite in a third direction perpendicular to the first direction and at an angle to the second direction.

When the device is actually used, the second direction and the third direction are both horizontal directions, and the second direction is perpendicular to the third direction.

Specifically, the at least two guide portions 24 have a first overlapping surface, a second overlapping surface, a third overlapping surface, and a fourth overlapping surface that overlap with the first side surface 222, the second side surface, the third side surface 224, and the fourth side surface, respectively.

Thus, the first side surface 222, the second side surface, the third side surface 224, and the fourth side surface are the side surfaces of the opposite sides of the punching end 221 along the second direction and the third direction, the first overlapping surface, the second overlapping surface, the third overlapping surface, and the fourth overlapping surface are the surfaces of the guide portion 24, and the orthographic projection of the guide portion 24 on the plane perpendicular to the first direction is located in the orthographic projection of the punching end 221 on the plane, so that after the guide portion 24 is inserted into the guide hole 14, the first overlapping surface, the second overlapping surface, the third overlapping surface, and the fourth overlapping surface correspond to the inner wall of the guide hole 14 and the inner wall of the molding hole 12.

When the relative position between the punch 20 and the die 10 is shifted and the shift amount causes the punching end 221 to collide with the die 10, the punch 20 moves in the vertical direction, which indicates that the punching end 221 is shifted from the relative position of the die 10 in the horizontal direction at this time, and the second direction and the third direction are horizontal directions forming an angle, and the punching end 221 is shifted from the position of the die 10 in the horizontal direction.

Taking the position of the punching end 221 shifted in the second direction relative to the die 10 as an example, the distance between one of the first side surface 222 and the second side surface and the inner wall of the forming hole 12 in the second direction is negative, that is, the punching end 221 moves downward and collides with the die 10, the guide portion 24 has a first overlapping surface and a second overlapping surface overlapping with the first side surface 222 and the second side surface, the distance between the corresponding overlapping surface and the inner wall of the forming hole 12 is negative, and the guide portion 24 collides with the die 10 when moving downward.

When the guide hole 14 is located in the molding hole 12, the gap between the outer wall of the guide portion 24 and the inner wall of the guide hole 14 may be a predetermined gap, or the gap between the guide portion 24 and the inner wall of the molding hole 12 may be a predetermined gap, and specifically, the gap between the first, second, third, and fourth overlapping surfaces of at least two guide portions 24 and the corresponding inner wall of the molding hole 12 may be a predetermined gap.

In other embodiments, an orthographic projection of the guide 24 on a plane perpendicular to the first direction is at least partially outside an orthographic projection of the blanking end 221 on a plane perpendicular to the first direction.

With regard to the two sets of embodiments, it should be explained that, when the orthographic projection of the guide portion 24 on the horizontal plane is located within the orthographic projection of the blanking end 221, in order to ensure that the guide portion 24 has the first, second, third and fourth overlapping surfaces that overlap with the first, second, third and fourth side surfaces 222, 224 of the blanking end 221, and that the guide portion 24 does not affect the blanking of the blanking end 221, it is preferable that there are at least two guide portions 24, one of the guide portions 24 may have the first and third overlapping surfaces, and the other guide portion 24 has the second and fourth overlapping surfaces.

Referring to fig. 3, when the orthographic projection of the guiding portion 24 on the horizontal plane is at least partially outside the orthographic projection of the blanking end 221, that is, the guiding portion 24 protrudes from the blanking end 221 in the vertical direction and also protrudes from the blanking end 221 in the horizontal direction, and the guiding hole 14 is also outside the forming hole 12, so as to ensure the guiding fit between the guiding portion 24 and the guiding hole 14. In this way, only one guide portion 24 may be provided, the guide portion 24 has four side surfaces facing each other in the second direction and the third direction, and the gaps between the four side surfaces and the inner wall of the guide hole 14 are predetermined gaps.

It should be further noted that, when the orthographic projection of the guide portion 24 on the horizontal plane is located within the orthographic projection of the blanking end 221, if the guide portion 24 collides with the die 10, the guide portion 24 is subjected to a reaction force of the die 10 in the vertical direction, and only a force in the vertical direction exists between the guide portion 24 and the blanking end 221; when the orthographic projection of the guide portion 24 on the horizontal plane is at least partially positioned outside the orthographic projection of the blanking end 221, if the guide portion 24 collides with the die 10, the guide portion 24 is still stressed by the attack force of the die 10 along the vertical direction, but at the same time, the guide portion 24 and the blanking end 221 have the first-direction acting force, and simultaneously, because the guide portion 24 and the blanking end 221 are at least partially staggered in the horizontal direction, a torque also exists between the guide portion 24 and the blanking end 221, and when the torque is too large, the connection between the guide portion 24 and the blanking end 221 can be broken.

In summary, in order to ensure the effect of avoiding the collision of the punching end 221 with the die 10 by the guide portion 24 and ensure the stability of the connection between the guide portion 24 and the punching end 221, the preferred embodiment is that the orthographic projection of the guide portion 24 on the horizontal plane is located within the orthographic projection of the punching end 221 on the horizontal plane.

In some embodiments, the body portion 22 defines a punching groove 23, and the punching groove 23 extends along the first direction and penetrates the end surface of the punching end 221 to form a punching edge 25 at the end surface of the punching end 221. Further, the punching groove 23 is an arc-shaped groove, and the correspondingly formed punching edge 25 is an arc-shaped edge.

The body 22 is provided with the punching groove 23, and the punching groove 23 starts from the end face of the punching end 221, and the shape of the forming hole 12 is the same as the orthographic projection shape of the punching end 221 on the horizontal plane, so the corresponding punching groove 23 can punch the corresponding shape of the base material, and for the tab, the tab is generally punched into an arc shape, so an arc-shaped groove is adopted.

In some embodiments, the punching groove 23 includes two punching grooves 23, and the two punching grooves 23 are located on opposite sides of the body portion 22 in the third direction, thereby forming two punching edges 25 on the end surface of the punching end 221. As will be understood in conjunction with fig. 2, the third direction is the front-rear direction in fig. 2, and the second direction is the left-right direction in fig. 2.

Thus, the two punching grooves 23 can simultaneously punch two base materials, that is, the two base materials are arranged on the surface of the female die 10 provided with the forming hole 12 at intervals along the third direction, the male die 20 moves downwards, the punching end 221 can simultaneously punch the base materials, and the two base materials are punched into the same shape as the punching grooves 23, so that the punching efficiency is effectively improved.

In some embodiments, the body 22 is substantially rectangular, and two punched slots 23 are opened on two opposite side surfaces of the body 22, and each punched slot 23 penetrates through the body along a vertical direction.

In practical applications, the number of the guide portions 24 includes four, and the four guide portions 24 are respectively disposed at four corners of the end surface of the blanking end 221.

The two guide portions 24 may be provided at two diagonal positions of the end surface of the blanking end 221, and thus the two guide portions 24 can be ensured to have the first, second, third, and fourth overlapping surfaces described above.

Of course, it is preferable that the guide portions 24 have four, and the four guide portions 24 are located at four corners of the end surface, so that when the relative positions of the punch 20 and the die 10 in the horizontal direction are shifted and the guide portions 24 collide with the die 10, at least two guide portions 24 collide with the die 10, thereby preventing the guide portions 24 from being damaged by an excessive impact force, and at the same time, ensuring that the punch 20 stops descending continuously due to the collision of the guide portions 24 with the die 10.

In some embodiments, the piercing edge 25 includes a first section 252 and a second section 254 that are connected to each other, the first section 252 and the second section 254 are each disposed at an angle relative to a plane perpendicular to the first direction, and the connection between the first section 252 and the second section 254 is spaced from the die 10 by a distance that is greater than the distance between the other positions of the first section 252 and the second section 254 and the die 10.

Thus, when the male die 20 moves towards the female die 10 and the punching end 221 punches the substrate located on the surface of the female die 10 where the forming hole 12 is formed, a shearing force is formed by the first section 252 and the second section 254 which are obliquely arranged, and a sharp angle is formed at the end part of the first section 252 and the end part of the second section 254 which are away from each other, so that the substrate is conveniently cut off.

Further, the first section 252 and the second section 254 are inclined at an angle of 3 ° to 5 ° with respect to a plane perpendicular to the first direction, even if the ends of the first section 252 and the second section 254 which are away from each other form a sharp angle, while preventing the guide portion 24 from protruding too far into the die 10 after the die cutting edge 25 has completely cut the base material.

Specifically, the first and second sections 252 and 254 are symmetrically disposed and inclined at an angle of 4 ° with respect to the first direction.

In some embodiments, the height of each of the first section 252 and the second section 254 in the first direction is 0.003mm to 0.005mm, in other words, when the end of the first section 252 and the end of the second section 254 away from each other contact the tab during punching of the tab, the distance between the joint of the first section 252 and the second section 254 and the tab is 0.003mm to 0.005 mm.

In some embodiments, the die-cutting apparatus further comprises a driving member drivingly connected to the punch 20 to drive the punch 20 such that the punch 20 reciprocates in a first direction relative to the die 10. Further, the punching equipment also comprises a frame, and the female die 10 and the driving piece are connected to the frame.

It should be noted that the driving member and the frame are configured as conventional means in the art, and the specific structure and model thereof can be selected by those skilled in the art according to the needs, which are not described herein again.

Compared with the prior art, the utility model provides a die-cut equipment has following advantage at least:

1) the guide part 24 protrudes out of the punching end 221 in the first direction, the guide part 24 can extend into the female die 10 before the punching end 221, if the relative position of the male die 20 and the female die 10 is deviated, and the deviation can cause the punching end 221 to collide with the female die 10, in the downward moving process of the male die 20, the guide part 24 can collide with the female die 10 before, and the male die 20 can stop descending after collision, so that the collision between the punching end 221 and the female die 10 is avoided, and the damage of a knife edge of the punching end 221 is avoided;

2) the preset clearance is less than 0.001mm, and the punching precision is high;

3) the first section 252 and the second section 254 of the punching blade 25 are obliquely arranged, the inclination angle is 3-5 degrees, even the end parts of the first section 252 and the second section 254 which are far away from each other form sharp angles, the base material is conveniently cut, and meanwhile, the guide part 24 is prevented from extending into the female die 10 too deeply after the punching blade 25 completely cuts the base material.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A blanking apparatus, comprising:

the surface of the female die is provided with a forming hole and a guide hole communicated with the forming hole; and

the male die is provided with a body part and a guide part, the body part is provided with a punching end along a first direction, the punching end can be matched with the forming hole in a punching way, the guide part is fixedly connected to the punching end and protrudes out of the punching end in the first direction, and the guide part can be matched with the guide hole in a guiding way;

the male die is arranged relative to the female die in a reciprocating manner along the first direction, and in the process that the male die moves relative to the female die along the first direction, the guide part and the punching end can sequentially and respectively extend into the guide hole and the forming hole.

2. Blanking apparatus according to claim 1, wherein the guides comprise at least two, the orthographic projection of at least two of the guides on a plane perpendicular to the first direction being located within the orthographic projection of the blanking end on a plane perpendicular to the first direction.

3. The blanking apparatus of claim 1 wherein the body portion defines a blanking slot extending in the first direction and through the end face of the blanking end to form a blanking edge at the end face of the blanking end.

4. The apparatus of claim 3, wherein the punch slot is an arcuate slot.

5. The apparatus of claim 3, wherein the punch slot includes two, the two punch slots being located on opposite sides of the body portion in a third direction perpendicular to the first direction.

6. The apparatus of claim 3, wherein the cutting edge includes first and second segments that are connected to each other, the first and second segments being inclined relative to a plane perpendicular to the first direction, and a connection between the first and second segments being spaced from the die by a distance that is greater than a distance between other locations of the first and second segments and the die.

7. The apparatus of claim 6, wherein the first and second segments each have a height in the first direction of 0.003mm to 0.005 mm.

8. Apparatus according to claim 6, wherein the first and second segments are inclined at an angle of 3 ° to 5 ° to a plane perpendicular to the first direction.

9. The blanking apparatus of claim 1 wherein the guide portion extends into the guide hole with a clearance of no more than 0.001mm from the guide hole.

10. The apparatus of claim 1, further comprising a drive member drivingly connected to the punch for driving the punch back and forth relative to the die in the first direction.

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