CN214601429U - Stamping and shaping die - Google Patents

Abstract

A stamping and shaping die comprises an upper die and a lower die, wherein the lower die comprises a convex die core and a lower shaping insert, and a working procedure piece to be shaped can be placed on the convex die core and the lower shaping insert; the upper die comprises an upper die base, the upper die base is provided with a middle pressing core and two side pressing cores, the two side pressing cores are arranged at intervals in the width direction of a process piece, the middle pressing core is located between the two side pressing cores, an upper shaping insert is arranged between the middle pressing core and the two side pressing cores, the middle pressing core, the side pressing cores are connected with the upper die base in a sliding mode in the vertical direction, an elastic piece is arranged between the middle pressing core and the upper die base, the middle pressing core is used for being matched with the convex die core to press the middle of the process piece, and the side pressing core is used for being matched with the lower shaping insert to press the side portion of the process piece. This punching press plastic mould all has the material restraint to the middle part and the limit portion of process spare, and the plastic in-process material flows relatively stably, and part size adjustment is more efficient.

Description

Stamping and shaping die

Technical Field

The utility model relates to a punching press technical field, concretely relates to punching press plastic mould.

Background

Center channel type stampings are important components of automobiles, which generally refer to components having a higher boss at the middle and generally in the shape of a "u" overall.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a stamping and shaping die suitable for central channel type stamping parts in the prior art, fig. 2 is a relative position diagram of an upper die core, an upper die insert, a lower die core and a lower shaping insert before shaping, and fig. 3 is a state diagram when the upper die insert just contacts a workpiece on the lower die core.

As shown in fig. 1 and 2, a stamping and shaping die suitable for a central channel stamping part in the prior art generally includes an upper die 01 and a lower die 02, wherein the upper die 01 includes an upper die base 011, an upper die swage core 012 and an upper die insert 013 which are installed on the upper die base 011, the upper die swage core 012 and the upper die base 011 are connected in a floating manner, an upper die spring 014 is arranged between the upper die and the upper die, the lower die 02 includes a lower die base 021, a lower die bulge core 022 and a lower shaping insert 023 which are installed on the lower die base 021, the lower die bulge core 022 and the lower die base 021 are also connected in a floating manner, and a lower die spring 024 is arranged between the lower die and the lower die spring. Before shaping, the upper die spring 014 and the lower die spring 024 are both in a relaxed state, and the upper die material pressing core 012 and the lower die material protruding core 022 are both in an ejection state.

In the shaping process, the process piece is placed on the lower die convex core 022, the upper die core 012 contacts the process piece, and then the upper die core 012 and the lower die convex core 022 are kept relatively static; as the upper die 01 is pressed down, the upper die spring 014 starts to compress, and the upper die insert block 013 descends along with the upper die 01 until the upper die insert block touches a working piece on the lower die convex core 022 and then keeps relatively static with the lower die convex core 022; along with the further descending of the upper die 01, the lower die spring 024 begins to be compressed, the whole upper die 01 moves downwards together with the lower die convex core 022, and the lower shaping insert 023 begins to work until the upper die 01 and the lower die 02 are completely closed, so that the stamping and shaping of the central channel stamping part can be completed.

However, as shown in fig. 3, when the upper die insert 013 just touches the workpiece, the lower part of the workpiece encircled by the dotted line in the figure is supported by the lower shaping insert 023, while the upper part is in an empty state and has no swaging constraint, and in the next movement of the die, the lower shaping insert 023 reshapes the workpiece encircled by the dotted line upward, and since there is no swaging constraint at this position, the material flow at this position becomes unstable, making the subsequent part size adjustment difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a punching press plastic mould, its upper die is equipped with middle part pressure material core and limit portion pressure material core for the middle part and the limit portion of process spare all can obtain pressing the material restraint, and the material flow is relatively stable among the plastic process, the subsequent part size adjustment of being more convenient for.

In order to solve the technical problem, the utility model provides a stamping and shaping die, which comprises an upper die and a lower die, wherein the lower die comprises a convex die core and a lower shaping insert, and a working procedure piece to be shaped can be placed on the convex die core and the lower shaping insert; the upper die comprises an upper die base, the upper die base is provided with a middle pressing core and two edge pressing cores, the two edge pressing cores are arranged at intervals in the width direction of the process piece, the middle pressing core is located between the two edge pressing cores, an upper shaping insert is arranged between the middle pressing core and the two edge pressing cores, the middle pressing core and the edge pressing cores are in sliding connection with the upper die base in the vertical direction, elastic pieces are arranged between the middle pressing core and the upper die base, the middle pressing core is used for being matched with the convex die core to press the middle of the process piece, and the edge pressing cores are used for being matched with the lower shaping insert to press the edges of the process piece.

When shaping is carried out, the working procedure piece can be placed on the convex mold core and the lower shaping insert, along with the descending of the upper mold, the middle pressing core can contact the middle part of the working procedure piece and is matched with the convex mold core to press the middle part of the working procedure piece, the edge pressing core can contact the edge part of the working procedure piece and is matched with the lower shaping insert to press the edge part of the working procedure piece, and at the moment, the middle pressing core and the edge pressing core are static relative to the lower mold; along with the continuous descending of the upper die, the elastic piece begins to be compressed, the upper shaping insert begins to be in contact with the working procedure piece, and the working procedure piece is enabled to generate plastic deformation; when the mold is completely closed, the stroke of the upper mold is completed, and the process piece can be shaped into a desired shape.

In the process, the edge of the process piece can be subjected to material pressing restraint under the matching of the edge pressing core and the lower shaping insert, so that other parts except the shaping region are subjected to material pressing restraint, the problem of unstable material flow caused by unrestrained material pressing in the prior art can be solved, after shaping is completed, the edge of the process piece is not prone to rebound, and subsequent processing of the process piece is relatively simple.

Optionally, the material pressing device further comprises a reinforcing piece capable of abutting against one side, away from the middle material pressing core, of the upper shaping insert in the width direction.

Optionally, the reinforcement and the upper die holder are of an integral structure.

Optionally, the upper shaping insert comprises a plurality of split bodies in the length direction, and the reinforcing member can be abutted against the connecting region of two split bodies adjacent to each other in the length direction and/or the edge region of each split body in the length direction.

Optionally, an avoiding structure is arranged at the upper part of the edge pressing core and used for avoiding the reinforcing piece.

Optionally, the middle pressing core and the side pressing core are both provided with a limiting component for limiting the maximum distance between the middle pressing core and the upper die holder and the maximum distance between the side pressing core and the upper die holder.

Optionally, the limiting component includes a head portion and a rod portion, the radial dimension of the head portion is larger than that of the rod portion, the upper die holder is provided with a mounting hole, the rod portion is inserted into the mounting hole and connected with the corresponding middle pressing core or the corresponding side pressing core, and the radial dimension of the head portion is at least larger than that of a local hole section of the mounting hole.

Optionally, the lower die further includes a lower die base, the male die core is fixedly mounted on the lower die base, the male die core is provided with the lower shaping insert on both sides in the width direction, the lower shaping insert includes a short portion and a high portion, the upper surface of the lower shaping insert is staggered in the height direction, and the lower shaping insert is connected with the male die core through the short portion.

Optionally, the male mold core and the lower shaping insert are of a split structure.

Optionally, the short portion and the high portion are of a split structure.

Drawings

FIG. 1 is a schematic structural diagram of a stamping and shaping die suitable for central channel type stamping parts in the prior art;

FIG. 2 is a relative position diagram of an upper die material core, an upper die insert, a lower die material core and a lower shaping insert prior to shaping;

FIG. 3 is a state view of the upper die insert just contacting the work piece on the cam core of the lower die;

fig. 4 is a schematic structural diagram of a stamping and shaping die suitable for central channel stamping parts according to the present invention;

FIG. 5 is a schematic view of the structure of the middle and side press cores in contact with the work piece;

FIG. 6 is a schematic illustration of the lateral forces experienced by the upper truing insert when the die is closed;

FIG. 7 is a schematic structural view of an upper die;

FIG. 8 is a schematic view of a side press core;

FIG. 9 is a schematic structural view of a lower mold;

fig. 10 is a schematic view of the structure of the male die core and the lower truing insert.

The reference numerals in fig. 1-3 are illustrated as follows:

01 upper die, 011 upper die holder, 012 upper die pressing material core, 013 upper die insert and 014 upper die spring;

02 lower die, 021 lower die holder, 022 lower die bulging core, 023 lower shaping insert and 024 lower die spring.

The reference numerals in fig. 4-10 are illustrated as follows:

1, an upper die, 11 upper die seats, 111 reinforcements, 12 middle part material pressing cores, 13 side part material pressing cores, 131 avoidance grooves and 14 upper shaping inserts;

2, a lower die, 21 convex die cores, 22 lower shaping inserts, 221 low parts, 222 high parts and 23 lower die seats;

and (A) processing the workpiece.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The longitudinal direction referred to herein is the direction in which the central channel extends in a central channel-like stamping, while the width direction is the direction perpendicular to the longitudinal direction, specifically the direction in which the two side walls of the central channel oppose each other, or, as can be understood with reference to fig. 7.

Referring to fig. 4-10, fig. 4 is a schematic structural view of a stamping and shaping die suitable for a central channel stamping part provided by the present invention, fig. 5 is a schematic structural view of a middle pressing core and an edge pressing core when contacting a process part, fig. 6 is a schematic structural view of an upper shaping insert receiving a lateral force when the die is closed, fig. 7 is a schematic structural view of an upper die, fig. 8 is a schematic structural view of an edge pressing core, fig. 9 is a schematic structural view of a lower die, and fig. 10 is a schematic structural view of a male die core and a lower shaping insert.

As shown in fig. 4 and 5, the utility model provides a punching press plastic mould, including last mould 1 and lower mould 2, lower mould 2 includes that convex mold core 21 and lower plastic insert 22, treats that the process piece A of plastic can place in convex mold core 21 and lower plastic insert 22, and process piece A indicates the intermediate part of having not walked complete manufacturing procedure.

Be different from the background art, the utility model provides an among the punching press plastic die, it includes upper die base 11 to go up mould 1, upper die base 11 is equipped with a middle part pressure material core 12 and two limit portion pressure material cores 13, both sides portion pressure material core 13 sets up at the interval on process A's width direction, middle part pressure material core 12 is located between both sides portion pressure material core 13, all be equipped with the plastic between middle part pressure material core 12 and the both sides portion pressure material core 13 and insert 14, middle part pressure material core 12, limit portion pressure material core 13 all with upper die base 11 direction sliding connection from top to bottom, and middle part pressure material core 12, all be equipped with the elastic component (not shown in the figure) between limit portion pressure material core 13 and the upper die base 11, middle part pressure material core 12 is used for cooperateing with convex die core 21 and presses the material to process A's middle part, limit portion pressure material core 13 is used for pressing the material with lower plastic insert 22 and cooperatees with the limit portion to process A.

During shaping, the process part A can be placed on the convex mold core 21 and the lower shaping insert 22, along with descending of the upper mold 1, the middle pressing core 12 can contact the middle part of the process part A and be matched with the convex mold core 21 to press the middle part of the process part A, the edge pressing core 13 can contact the edge part of the process part A and be matched with the lower shaping insert 22 to press the edge part of the process part A, and at the moment, the middle pressing core 12 and the edge pressing core 13 are static relative to the lower mold 2; with the continuous descending of the upper die 1, the elastic piece begins to be compressed, the upper shaping insert 14 begins to be in contact with the working piece A, and the working piece A is enabled to generate plastic deformation; when the mold is completely closed, the stroke of the upper mold 1 is completed, and the process material a can be shaped into a desired shape.

In the process, the edge of the process piece a can be subjected to material pressing constraint under the matching of the edge pressing core 13 and the lower shaping insert 22, so that other parts except for the shaping region are subjected to material pressing constraint, the problem of unstable material flow caused by unconstrained material pressing in the prior art can be solved, after shaping is completed, the edge of the process piece a is not prone to rebound, and subsequent processing of the process piece a is relatively simple.

After the shaping is finished, the upper die 1 and the lower die 2 can be relatively separated, and the middle pressing core 12 and the edge pressing core 13 can return to the original positions under the action of respective elastic pieces. Here, the embodiment of the present invention does not limit the kind and the installation structure of the elastic member, and the elastic member may be specifically set with reference to a press shaping die or a conventional elastic member in the related art, and in general, the elastic member may be a nitrogen spring.

With reference to fig. 6, since the central channel of the central channel-like stamping part generally has a relatively large depth, and the side wall of the central channel also has a certain slope, this structural characteristic causes the upper truing insert 14 to be subjected to a large lateral force on the side close to the central die 12 in the width direction during truing.

For effectively resisting this yawing force, as shown in fig. 7, in the stamping and shaping die provided by the utility model, can also set up reinforcement 111, can carry out the butt with last plastic insert 14 in the one side that deviates from middle part pressure material core 12 on the width direction to improve the lateral capability of preventing of last plastic insert 14, and then can effectively prevent the local unbalance loading inefficacy of last plastic insert 14, this all has positive meaning to the stable in structure and the life that improve upper shaping insert 14.

In the upper die 1 of the stamping and shaping die, the upper shaping insert 14 and the upper die base 11 are generally fixed in a detachable connection mode, so that the upper shaping insert 14 can be conveniently adjusted, and the adjustment can comprise adjustment of a mounting position, adjustment of a model selection and the like so as to meet the requirement of stamping and shaping. The specific options for the detachable connection can be found in the prior art and will not be described in detail here.

Similarly, the reinforcement 111 and the upper die base 11 may be detachably connected. Or, the reinforcement 111 and the upper die base 11 may be of an integral structure, and at this time, there is no connection section between the reinforcement 111 and the upper die base 11, and the reinforcement 111 and the upper die base may have a better connection strength therebetween, which has a positive significance for improving the reinforcing effect of the reinforcement 111. The reinforcing member 111 may be a reinforcing block, and a specific structural form thereof is not limited herein.

The upper truing inserts 14 on either side of the central core 12 in the width direction may be of one-piece construction.

In consideration of the possibility that the work piece a may have a large dimension in the longitudinal direction, the upper trim insert 14 may include a plurality of divided bodies in the longitudinal direction, and in this case, a weak region is formed in the connection region of the divided bodies due to the presence of the connection gap between the divided bodies, and at the same time, the strength of both end portions (edge regions) of the divided bodies in the longitudinal direction is relatively weak. For this reason, in the embodiment of the present invention, the reinforcing member 111 may be provided in the strength weak region so as to abut against the connecting region of the two divided bodies adjacent to each other in the longitudinal direction and the edge region of each divided body in the longitudinal direction. In other words, the reinforcing members 111 are disposed at both ends of each of the divided bodies in the longitudinal direction, and the same reinforcing member 111 may be shared by two adjacent divided bodies; of course, the reinforcing members 111 may be disposed in the adjacent two bodies.

The mounting position of the reinforcing member 111 in the width direction substantially coincides with the mounting position of the edge die core 13 in the width direction, which may cause the reinforcing member 111 to affect the displacement of the edge die core 13 relative to the upper die base 11. In contrast, as shown in fig. 8, the upper portion of the edge pressing core 13 may be provided with an escape structure, which may be specifically an escape groove 131, an escape notch, or the like, for escaping from the reinforcement 111 described above.

Further, the middle pressing core 12 and the side pressing core 13 may be configured with a limiting component (not shown in the figure) for limiting a maximum distance between the middle pressing core 12 and the side pressing core 13 and the upper mold base 11, so as to prevent the middle pressing core 12 and the side pressing core 13 from falling off from the upper mold base 11.

Compared with the prior art, the utility model provides a quantity of material core is pressed to punching press plastic mould will show to increase, consequently, the space that upper die base 11 can use is also relatively less, and in traditional scheme, stop part uses the side round pin usually, but this kind of form stop part's occupation space can be relatively great, is not particularly suitable for the embodiment of the utility model discloses use.

To this end, the embodiment of the utility model provides an choose to adopt a new spacing part, including head and pole portion, wherein, the radial dimension of head is greater than pole portion, and upper die base 11 can be equipped with the mounting hole, and pole portion can be pegged graft in the mounting hole to link to each other with corresponding middle part pressure material core 12 or limit portion pressure material core 13, the radial dimension of head is greater than the radial dimension of the local hole section of mounting hole at least. Therefore, the downward movement strokes of the middle pressing core 12 and the edge pressing core 13 can be effectively limited through the matching of the head part and the mounting hole.

The spacing part of this kind of form can be hidden in upper die base 11, can not too much occupation space, and the integrated level is high, and the compactedness is good, can be applicable to better the utility model provides an it has the punching press plastic mould of a plurality of pressure material cores to go up mould 1 and uses. In addition, through the cooperation of pole portion and mounting hole, can also guide the displacement of corresponding pressure material core in fact, that is to say, this spacing part can also realize the direction function.

The mounting hole can be the constant diameter hole, this moment, in the head of stop part can not get into the mounting hole, perhaps, the mounting hole also can be the shoulder hole, including big footpath hole section and path hole section, this moment, the radial dimension of stop part's head only need be greater than path hole section can, this head can be located big footpath hole section, under this kind of structure, under the prerequisite of guaranteeing the axial length of big footpath hole section, stop part's head can not leak outward, can prevent stop part's influence to other parts better.

The limiting component can further comprise a conventional limiting component and a safety limiting component, in a normal state, the head of the conventional limiting component can abut against the upper die base 11 to limit the stroke of the corresponding material pressing block, and when the conventional limiting component is broken, the head of the safety limiting component can be connected with the upper die base 11 to prevent the material pressing block from falling.

To foretell spacing part including head and pole portion, connection structure between its pole portion and the corresponding pressure material core can not do the injecing, specifically arrives the embodiment of the utility model provides an in, can set up the screw thread section in pole portion to carry out threaded connection with the corresponding pressure material core, this kind of connected mode simple structure, and can adjust, more convenient stroke to corresponding pressure material core is controlled.

It should be noted that the above-mentioned position-limiting component including the head portion and the shaft portion is only an exemplary illustration of the embodiment of the present invention regarding the specific structure of the position-limiting component, and besides, the position-limiting component may also adopt other forms of position-limiting elements, for example, side pins and the like commonly used in the prior art, which are also an option.

In fact, besides the guiding function of the above-mentioned limiting component, a special guiding structure may be provided to guide the displacement of the corresponding pressing core, and the specific form of the guiding structure is not limited herein as long as the guiding function can be realized.

As shown in fig. 9 and 10, the lower mold 2 may further include a lower mold base 23, which is different from the floating connection structure in the background art, and the male mold core 21 may be fixedly mounted on the lower mold base 23, so that the structure of the lower mold 2 is relatively simple. The male die core 21 may be provided with lower shaping inserts 22 on both sides in the width direction, the lower shaping inserts 22 may include short portions 221 and high portions 222 of which the upper surfaces are staggered in the height direction, and the lower shaping inserts 22 may be connected to the male die core 21 through the short portions 221; with this configuration, a shaping groove can be formed between the high portion 222 and the male die core 21, and the upper shaping insert 14 can shape the work piece a in the shaping groove.

The male die core 21 and the lower shaping insert 22 are both detachably mounted on the lower die base 23 so as to be convenient for adjusting the male die core and the lower shaping insert.

Further, the male mold core 21 and the lower shaping insert 22 may be of a split structure; and/or, short portion 221 and high portion 222 may be a split structure. In this way, in the subsequent change of the appearance of the lower die 2, the shim is directly arranged at the bottom of the corresponding part of the lower shaping insert 22 without repair welding, and then numerical control machining is carried out, so that the repair welding defects of various forms can be basically avoided, and the influence on the strength of the die is small.

Moreover, due to the adoption of the split structure, materials with different properties can be adopted to prepare the male die core 21 and the lower shaping insert 22 according to requirements, so as to better meet the working requirements. For example, the lower cosmetic insert 22 is the core working part, which requires higher strength and can be optionally made of Cr12MoV (i.e., cold work die steel), while the male mold core 21 part, which requires lower strength, can be made of ICD-5 (i.e., air cooled steel) to distribute the strength properly.

It should be noted that the above description of the configuration that the male mold core 21 is fixedly installed, the lower shaping insert 22 and the male mold core 21 are in a split structure, and the short portion 221 and the high portion 222 are in a split structure is only an exemplary description of the embodiment of the present invention regarding the specific structure of the lower mold 2, and the lower mold 2 may actually adopt other forms of structures, for example, the floating connection structure of the male mold core 21 indicated in the background art, which does not affect the function of the lower mold 2.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A stamping and shaping die comprises an upper die (1) and a lower die (2), wherein the lower die (2) comprises a male die core (21) and a lower shaping insert (22), a process part (A) to be shaped can be placed on the male die core (21) and the lower shaping insert (22), and the stamping and shaping die is characterized in that the upper die (1) comprises an upper die base (11), the upper die base (11) is provided with a middle pressing core (12) and two edge pressing cores (13), the two edge pressing cores (13) are arranged at intervals in the width direction of the process part (A), the middle pressing core (12) is positioned between the two edge pressing cores (13), an upper shaping insert (14) is arranged between the middle pressing core (12) and the two edge pressing cores (13), and the middle pressing core (12) and the edge pressing core (13) are both connected with the upper die base (11) in a vertical sliding manner, elastic pieces are arranged among the middle pressing core (12), the edge pressing core (13) and the upper die base (11), the middle pressing core (12) is used for being matched with the convex die core (21) to press the middle of the working piece (A), and the edge pressing core (13) is used for being matched with the lower shaping insert (22) to press the edge of the working piece (A).

2. The press-shaping die according to claim 1, further comprising a reinforcement (111) capable of abutting against a side of the upper shaping insert (14) facing away from the central core (12) in the width direction.

3. The press-shaping die as claimed in claim 2, wherein the reinforcement (111) is of one-piece construction with the upper die base (11).

4. The press-shaping die according to claim 2, wherein the upper shaping insert (14) includes a plurality of divided bodies in a longitudinal direction, and the reinforcing member (111) is capable of abutting against a connecting region of two divided bodies adjacent to each other in the longitudinal direction and/or an edge region of each divided body in the longitudinal direction.

5. The press-shaping die as set forth in claim 2, wherein an upper portion of the edge pressing core (13) is provided with an escape structure for escaping the reinforcing member (111).

6. The press-shaping die as claimed in any one of claims 1 to 5, wherein each of the central die (12) and the side die (13) is provided with a limiting member for limiting the maximum distance between the central die (12) and the side die (13) and the upper die holder (11).

7. The stamping and shaping die of claim 6, wherein the limiting component comprises a head part and a rod part, the radial dimension of the head part is larger than that of the rod part, the upper die holder (11) is provided with a mounting hole, the rod part is inserted into the mounting hole and is connected with the corresponding middle pressing core (12) or the corresponding edge pressing core (13), and the radial dimension of the head part is at least larger than that of a local hole section of the mounting hole.

8. The press-shaping die according to any one of claims 1 to 5, wherein the lower die (2) further comprises a lower die holder (23), the male die core (21) is fixedly mounted on the lower die holder (23), the male die core (21) is provided with the lower shaping insert (22) on both sides in the width direction, the lower shaping insert (22) comprises a short portion (221) and a high portion (222) of which the upper surfaces are staggered in the height direction, and the lower shaping insert (22) is connected with the male die core (21) through the short portion (221).

9. The press shaping die of claim 8, wherein the male die core (21) and the lower shaping insert (22) are of a split structure.

10. The press-shaping die of claim 8, wherein the short portion (221) and the high portion (222) are of a split structure.

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