CN218591589U - Side punching female die and side punching device using same and used for automobile safety airbag shell - Google Patents

Abstract

The utility model discloses a side blow device that is used for car air bag casing of side blow hole die and uses it, include: the die base comprises a base body in an annular structure and a plurality of sunken assembling grooves which are formed in the outer side wall of the base body at intervals in the circumferential direction; the female die blocks are suitable for being assembled and fixed in the plurality of concave assembling grooves in a one-to-one mode, and female die cavities are formed in each female die block; the fastening assembly comprises positioning holes which are arranged on the base body and correspond to the plurality of concave assembling grooves in a one-to-one mode, locking holes which are respectively arranged on each female die block, and fastening pieces which are used for fastening and connecting the positioning holes and the locking holes in a one-to-one mode. The utility model discloses can optimize the structure of whole side die that punches a hole in order to reduce structure use cost and improve its structural accuracy.

Description

Side punching female die and side punching device using same and used for automobile safety airbag shell

Technical Field

The utility model relates to an automobile and rail vehicle processing equipment technical field especially relates to a side blow device that is used for car air bag casing of side blow hole die and uses it.

Background

The side wall of a shell of a plurality of deep-drawing parts such as an automobile air bag has the requirement of lateral punching, a die needs to adopt various lateral punching mechanisms, an indispensable part in a specific lateral punching mechanism is a lateral punching female die, and the purpose of punching the side wall of the shell is realized through the matching of a male die and the lateral punching female die.

Generally, more than one side punching hole is needed to be formed on the shell, but a plurality of side punching holes are simultaneously processed, namely, a plurality of die cavities are needed to be arranged on a side punching die. All die cavities in the conventionally used side punching die are of an integrated structure with the die base, although a plurality of die cavities of the integrated structure have the advantage of strong structural stability. However, for the female die cavity, the female die cavity is easily damaged in the long-term matching process with the male die, for example, the edge is broken or the cutting edge is blunted, so that when one of the female die cavities in the whole side punching female die is damaged and needs to be scrapped, the side punching female die with the female die cavity and the female die base in an integrated structure needs to be scrapped integrally, and therefore the use cost of the whole equipment is increased, and the processing cost of the product is indirectly increased; and mobility in the use process of the integrated structure is poor, and the complexity of rapid disposal is high under the emergency condition of production, so that the integrated structure is not beneficial to efficient disposal on the production field of short, flat and rapid production.

Furthermore, referring to fig. 1, for the side-piercing female die with the female die cavity and the female die base integrated, in the processing process, as shown in fig. 2 to 4, 3 pin holes a, B, and C are processed in the Z-axis direction by slow wire feeding; then, turning the die base by 90 degrees, and processing die cavities E and E1 (shown in figure 2) of the die in a slow-moving mode (in the Y-axis direction) by using the pin holes A, B and C as positioning references through a tool clamp; the female die base rotates by 60 degrees and slowly walks to process female die cavities F and F1 (figure 3) by taking the pin holes A, B and C as positioning references; and (3) slowly moving the workpiece by rotating the workpiece by minus 60 degrees, processing female die cavities G and G1 (figure 4) by taking the pin holes A, B and C as positioning references, and cutting and processing the slowly moving wire for 4 times to finish the die parts. The whole process is that the processing degree of difficulty is big, and because a plurality of die cavities all directly concentrate on the die base, therefore a plurality of die cavities that whole side blow die corresponded in the course of working must zero error, and the error of any die cavity all can cause scrapping of whole side blow die. In addition, in the processing process, the processing process is complicated, four times of positioning coexist before and after, and the integral precision of the finally formed side punching female die can be directly influenced by the accumulated error in the four times of positioning process.

Therefore, for the side punching female die, the overall structure of the side punching female die needs to be further optimized to reduce the loss cost and improve the accuracy of the overall structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a side punching die to the technical problem of the structure of solving and optimizing whole side punching die in order to reduce structure use cost and improve its structural accuracy.

A second object of the utility model is to provide a side blow device for car air bag casing to the technical problem of the structure of solving and optimizing whole side punching die in order to reduce structure use cost and improve its structural accuracy.

The utility model discloses a side blow die is realized like this:

a side-piercing die comprising:

the die base comprises a base body in an annular structure and a plurality of sunken assembling grooves which are formed in the outer side wall of the base body at intervals in the circumferential direction;

the female die blocks are suitable for being assembled and fixed in the plurality of concave assembling grooves in a one-to-one mode, and female die cavities are formed in each female die block;

the fastening assembly comprises positioning holes which are arranged on the base body and correspond to the plurality of concave assembling grooves in a one-to-one mode, locking holes which are respectively arranged on each female die block, and fastening pieces which are used for fastening and connecting the positioning holes and the locking holes in a one-to-one mode.

In the optional embodiment of the present invention, when the plurality of female mold blocks are tightly fitted to the female mold base, the end surface of each female mold block away from the axis of the female mold base is concentric with the end surface of the outer annular surface of the female mold base.

In the optional embodiment of the present invention, when the plurality of female mold blocks are tightly fitted to the female mold base, the end surface of each female mold block away from the axis of the female mold base is recessed with respect to the end surface of the outer annular surface of the female mold base.

In an alternative embodiment of the present invention, the fastener is a pin; and

the locking and locating holes are adapted to be constrained by pins along the axial sides of the die base.

In an alternative embodiment of the invention, the inner torus of the base body is provided with a discharge hole adapted to one-to-one through the female mould cavities on the plurality of female mould blocks.

In an alternative embodiment of the present invention, the end surface of the female die block facing the axis of the female die base is a cutting edge surface.

The utility model discloses in the optional embodiment, a pair of lateral wall that is located the cutting edge face both sides on the die piece is equipped with unsmooth complex joint portion respectively with sunken assembly groove between the cell wall that corresponds.

In an alternative embodiment of the present invention, the coupling portion includes a groove formed on the female mold block and a rib formed on a groove wall of the recessed assembly groove.

The utility model discloses optional embodiment, every all be equipped with two die cavity on the concave mould piece, and two die cavity is located the upper and lower side in locking hole respectively.

The utility model discloses a side blow device for car air bag casing realizes like this:

a side-blow apparatus for an automotive air bag housing comprising: and the side punching female die.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a side blow hole die and use its side blow device that is used for car air bag casing, the die cavity takes shape in the die piece, and be detachable assembly structure between concave module and the die base, not the structure that the integral type takes shape, so under the structure, when the die cavity on the die piece of individuality appears wearing and tearing and need change, only need to change certain concave module alone, thereby it is whole to scrap not need the offside die that punches a hole, under such condition, use cost not only can be reduced, and the degree of difficulty in the course of working can be reduced.

Furthermore, adopt the utility model discloses a side blow hole die can be processed at Z axle direction with to die base and a plurality of concave module to can avoid among the prior art rotary workpiece to process the big problem of accumulative error that exists under the equidirectional dimension, so also can improve the utility model discloses a side blow hole die overall structure's machining precision.

Drawings

FIG. 1 is a schematic view of the overall structure of a side-piercing die of the prior art;

FIGS. 2 to 4 are schematic views of a prior art side punch die during processing;

fig. 5 is a schematic structural view of the side punching female die of the present invention;

fig. 6 is a schematic structural view of a die base of the side punching die of the present invention;

FIG. 7 is a schematic view of the structure of the die block of the side-piercing die of the present invention;

fig. 8 is a schematic structural view of a groove on a die block of the side-piercing die of the present invention;

fig. 9 is a schematic structural view of a rib of the side punching female die of the present invention;

fig. 10 is a schematic view of the fitting structure of the groove and the convex rib of the side punching female die of the present invention;

fig. 11 is the matching structure diagram of the pin and the locking hole of the side punching die of the present invention.

In the figure: the cutting edge structure comprises a base body 11, a concave assembly groove 12, a convex rib 13, a discharge hole 15, a positioning hole 16, a concave module 21, a groove 22, a concave die cavity 23, a cutting edge surface 24, a locking hole 25, a pin 3 and a pin hole 5.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 5 to 11, the present embodiment provides a side punching female die, which may be suitable for use in an automobile airbag housing, and may also be suitable for use in other similar housings requiring punching, which is not limited in this embodiment. Specifically, the side punching die adopted in this embodiment includes: the die comprises a die base and a plurality of die blocks 21 which can be detachably matched with the die base, wherein a die cavity 23 is formed on each die block 21.

In detail, firstly, the die base comprises a base body 11 which is of an annular structure as a whole and a plurality of concave assembly grooves 12 which are arranged on the outer side wall of the base body 11 at intervals along the circumferential direction; the number of the specific concave fitting grooves 12 is determined according to the number of the punched holes required on the specifically processed shell, and the embodiment is not limited in any way. In view of convenience of processing, the plurality of concave assembly grooves 12 on the base 11 may have the same structure, and the plurality of concave assembly grooves 12 may be formed simultaneously.

It should be further noted that, for the plurality of recessed fitting grooves 12 on the base 11, in order to reduce the difficulty in fitting the recessed modules 21 with the recessed fitting grooves 12, the recessed fitting grooves 12 are distributed entirely along the axial direction of the base 11, that is, the recessed fitting grooves 12 are extended to both axial ends of the base 11, and in this configuration, the recessed modules 21 can be inserted longitudinally into the recessed fitting grooves 12 from the axial ends of the base 11 at the time of fitting.

Furthermore, the inner circular surface of the base body 11 in this embodiment is provided with a discharge hole 15 adapted to penetrate one-to-one the die cavities 23 of the plurality of female mold blocks 21, the discharge hole 15 extending specifically up to the recessed assembly groove 12, thereby providing communication between the discharge hole 15 and the die cavities 23. The requirement of the discharge hole 15 is not high, and the discharge hole is generally 0.2mm larger than the single side of the female die cavity 23, the range can be 0.1 mm-0.3 mm, and the integral processing precision requirement is much lower than that of the female die cavity 23.

In the case of the female mold blocks 21, the female mold blocks 21 are of the same structure for the convenience of processing, so that the female mold blocks 21 can be processed by the same mold. For the die cavity 23 formed on the female die block 21, after the female die block 21 and the concave assembly groove 12 are assembled in place, the extending direction of the die cavity 23 on the female die block 21 is perpendicular to the axial direction of the die base. It should be noted that the shape of the integral female module 21 is not limited in this embodiment, as long as the fitting with the female fitting groove 12 can be achieved.

In addition to the above configuration, an end surface of the die block 21 facing the axis of the die base is a cutting edge surface 24.

It should be noted that, for the female die cavities 23 on the female die block 21, only one female die cavity 23 may be provided on each female die block 21 according to different situations of punching on a specific housing, or two female die cavities 23 may be provided on each female die block 21, and the two female die cavities 23 are respectively located on the upper side and the lower side of the locking hole 25, and the female die block 21 with such a structure may be adapted to a situation of processing two openings in the same dimension direction on a workpiece. That is, the specific number of the concave cavities 23 of the concave mold piece 21 is not absolutely limited in this embodiment.

The cross-sectional shape of the die cavity 23 is also determined according to the shape of the work to be specifically processed, and the drawing of the present embodiment exemplifies only the die cavity 23 having a waist-shaped cross-section.

On the basis of the above structure, after the female die block 21 and the recessed assembly groove 12 are assembled in place, in order to improve the locking effect of the assembly structure formed between the female die block 21 and the recessed assembly groove 12, the present embodiment further designs a fastening assembly, which includes a positioning hole 16 that is provided on the base body 11 and corresponds to the plurality of recessed assembly grooves 12 one by one, a locking hole 25 that is provided on each female die block 21, and a fastening member that fastens and connects the positioning hole 16 and the locking hole 25 one by one. The fastener here can be a pin 3 or a screw, but this embodiment is not limited in any way.

For the matching between the fastener and the locking hole 25 and the positioning hole 16, the locking hole 25 and the positioning hole 16 are suitable to be limited by the pin 3 along the axial side of the die base, and the dimension of the locking hole 25 and the positioning hole 16 perpendicular to the axial direction of the die base can form clearance fit with the pin 3, so that the structure is that the pin 3 is only matched and fixed with the axial direction of the female die block 21, and the over-positioning problem is avoided by matching the clearance for the direction of the female die block 21 perpendicular to the axial direction, thereby ensuring the reliable positioning. In addition, the overall processing precision can be properly relaxed in the positioning mode, namely, the processing precision of the axial edges of the locking holes 25 and the positioning holes 16 is only required to be guaranteed, the processing precision can be properly reduced for the edges perpendicular to the axial direction, and therefore, the processing difficulty can be reduced for the processing process of the overall female die block 21, the defective rate in the processing process of products can be reduced, and the yield is improved.

Furthermore, it should be further described that, when the workpiece is punched by the specific side-punching die, the whole workpiece is sleeved outside the circumferential direction of the die base, so as to avoid that the concave module 21 assembled with the die base affects the sleeving fit between the specific workpiece and the die base, in an optional implementation, when the plurality of concave modules 21 are tightly fitted with the die base, the end face of each concave module 21 departing from the axis of the die base is concentric with the end face of the outer annular surface of the die base. In such a structure, that is, the side end surface of the female die block 21 away from the axis of the female die base is an arc surface, and the arc surface and the outer annular surface of the base 11 can jointly enclose to form a complete circumferential surface, in such a case, the circumferential dimension of the workpiece can be simultaneously contacted with the base 11 and the female die block 21 in the punching process. In addition to the above, in an alternative embodiment, when the plurality of concave modules 21 are tightly matched with the die base, the end surface of each concave module 21 departing from the axis of the die base is concave relative to the end surface of the outer circular ring surface of the die base, in such a way that the circumferential dimension of the workpiece is contacted with the outer circular ring surface of the substrate 11 during the punching process.

Finally, regarding the side-piercing female die of this embodiment, in order to improve the stability of the assembly structure formed by the detachably assembled female die block 21 and the female die base, especially, because the side-piercing female die needs to be matched with a male die to realize when performing a punching operation on a workpiece, and the male die needs to be inserted into the female die cavity 23 of the female die block 21, in the process that the male die enters and exits the female die cavity 23, in order to avoid the female die block 21 from pulling the female die block 21 when the male die withdraws from the female die cavity 23 to cause the loosening of the fit structure formed by the female die block 21 and the female die base, the following structural design is made in this embodiment: a pair of outer side walls on two sides of the cutting edge surface 24 of the concave module 21 are respectively provided with a concave-convex matched combination part with the groove wall corresponding to the concave assembly groove 12.

For the above-mentioned joint, in an alternative implementation, the joint includes a groove 22 formed on the concave module 21 and a rib 13 formed on the groove wall of the concave fitting groove 12, which is taken as an example in the drawing of the present embodiment; in a further alternative embodiment, the coupling comprises a rib 13 formed on the female mould part 21 and a groove 22 formed on the wall of the recessed mounting groove 12. Since the die block 21 of the present embodiment can be inserted into the recessed fitting groove 12 along the axial direction of the base body 11, both of the above-described cases can satisfy the use requirements of the present embodiment.

Regarding the side punching die of the present embodiment, it should be further noted that, since the plurality of concave assembly grooves 12 on the die base in the present embodiment can be integrally and synchronously processed, that is, the structures of the plurality of concave assembly grooves 12 are the same, any combination of the plurality of concave modules 21 and the plurality of concave assembly grooves 12 can be assembled and used in the process of assembling with the concave modules 21; similarly, the same mold can be used for forming a plurality of female mold blocks 21, so that the plurality of female mold blocks 21 have the same structure. Based on the situation, only one hole needs to be machined in the same axial dimension of the workpiece, and two female die cavities 23 can be simultaneously formed in each female die block 21, so that after the female die blocks 21 and the concave assembly grooves 12 are assembled in place, only one female die cavity 23 matched with the male die is formed at each time, and the other female die cavity 23 is idle. With the structure, when the female die block 21 is rotated 180 degrees along the axial direction of the female die base, the other female die cavity 23 on the female die block 21 can be communicated and matched with the discharge hole 15 on the base body 11. That is to say, each female die block 21 can have two complete service cycles, so that the service life of the female die block 21 can be greatly prolonged, and the production cost of the integral side punching female die is greatly reduced.

Finally, adopt the utility model discloses a side blow hole die can be with processing at the Z axle direction to three pin hole 5 on the die base and a plurality of female module 21 to can avoid among the prior art rotatory work piece to process the big problem of accumulative error that exists under the equidirectional dimension, so also can improve the utility model discloses a side blow hole die overall structure's machining precision

Example 2:

on the basis of the side-piercing die of embodiment 1, the present embodiment provides a side-piercing device for an automotive air bag housing, including: the side punch female die of example 1.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

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; either directly or indirectly through intervening media, either internally or in any other relationship. 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 description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature may be over, above or on the second feature including the first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being below, beneath or beneath a second feature includes the first feature being directly below and obliquely below the second feature or simply indicating that the first feature is at a lesser level than the second feature.

Claims (10)

1. A side-piercing die, comprising:

the die base comprises a base body in an annular structure and a plurality of sunken assembling grooves which are formed in the outer side wall of the base body at intervals in the circumferential direction;

the female die blocks are suitable for being assembled and fixed in the plurality of concave assembling grooves in a one-to-one mode, and female die cavities are formed in each female die block;

the fastening assembly comprises a positioning hole which is arranged on the base body and corresponds to the plurality of concave assembling grooves in a pair, locking holes which are respectively arranged on each female die block, and fastening pieces which are used for fastening and connecting the positioning hole and the locking holes in a one-to-one manner.

2. The side-piercing die of claim 1, wherein when the plurality of die blocks are in secure engagement with the die base, an end surface of each die block facing away from the axis of the die base is co-circumferential with an end surface of the outer torus of the die base.

3. The side-piercing die of claim 1, wherein when the plurality of die blocks are in tight engagement with the die base, an end surface of each die block facing away from the axis of the die base is recessed relative to an end surface of the outer torus of the die base.

4. The side-piercing matrix of claim 2 or 3, wherein the fastener is a pin; and

the locking and locating holes are adapted to be constrained by pins along the axial sides of the die base.

5. The side-piercing die of claim 1, wherein the inner torus of the base is provided with a discharge adapted to extend through the die cavities of the plurality of die blocks in a one-to-one relationship.

6. The side-piercing die of claim 1 or claim 5, wherein the end face of the die block facing the axis of the die base is a cutting edge face.

7. The side-piercing die of claim 6, wherein a pair of outer side walls on both sides of the cutting edge surface of the die block are respectively provided with a concave-convex matched joint part with the groove wall corresponding to the concave assembly groove.

8. The side-piercing die of claim 7, wherein the engaging portion includes a groove formed on the die block and a rib formed on a groove wall of the recessed mounting groove.

9. The side-piercing die according to claim 1, wherein two die cavities are provided in each die block, and the two die cavities are located at upper and lower sides of the locking hole.

10. A side-blow apparatus for an automotive air bag housing, comprising: a side punch die according to any one of claims 1 to 9.

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