CN217315429U

CN217315429U - Composite stamping die

Info

Publication number: CN217315429U
Application number: CN202123441622.2U
Authority: CN
Inventors: 黄宏伟; 张青; 潘岱煌
Original assignee: Guangzhou Huaguan Fine Blanking Compoments Co ltd
Current assignee: Guangzhou Huaguan Fine Blanking Compoments Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-30
Anticipated expiration: 2031-12-30

Abstract

The application discloses a composite stamping die, relates to the field of metal finish machining, and particularly relates to a composite stamping die; the application discloses compound stamping die includes: the blanking device comprises an upper die fixing part, a material pressing plate, a concave die plate, a lower die fixing part, a blanking concave-convex die, a blanking counter-pressing die, a bending upper die and a bending lower die; through the shape assorted back pressure face that sets up on blanking back pressure mould and the face of bending down of the lower mould, when making the part carry out the blanking after bending, location that can be more accurate, simultaneously, because the back pressure face can laminate completely with the bottom surface of part, the atress is more even when the punching press blanking, more can guarantee the functional strength of the part of preparation.

Description

Composite stamping die

Technical Field

The application relates to the field of metal finish machining, in particular to a composite stamping die.

Background

In the existing forming process, a continuous die structure with a die and a cavity 2 is adopted, and if parts with narrow and long bending arms need to be produced, the parts need to sequentially pass through three stations: the first station punches the narrow and long arms according to the size of the part, the second station bends the narrow and long arms to form, and the third station punches and blanks other shapes and holes according to the size of the part. The line of punching a tangent line and the third station of first station punching needs the joint, has certain die-cut interface, is unfavorable for part functional strength, because the transform of station is difficult to guarantee the precision of counterpointing moreover for the part of punching out can have the interface of appearance, and the long arm appears incompletely in the narrow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid the weak point among the prior art and provide a can realize the compound stamping die of accurate pressfitting.

The purpose of the utility model is realized through the following technical scheme:

a composite stamping die, comprising: the blanking device comprises an upper die fixing part, a material pressing plate, a concave die plate, a lower die fixing part, a blanking concave-convex die, a blanking counter-pressing die, a bending upper die and a bending lower die; the upper die fixing part is fixedly connected with the blanking male die, and the blanking male die penetrates through the material pressing plate and is in sliding fit with the material pressing plate; the bending upper die is fixedly connected with the pressure plate and is provided with an upper bending surface; the lower die fixing part is respectively and fixedly connected with the concave die plate and the bending lower die; the material pressing plate and the concave template are matched to compress the material; the lower bending die is provided with a lower bending surface, and the shape and the position of the lower bending surface are matched with those of the upper bending surface to match with the bending material; the blanking counter-pressing die is provided with a counter-pressing surface, and the shape of the counter-pressing surface is matched with that of the lower bending surface; the blanking counter-pressing die is connected with the lower die fixing part in a sliding mode and matched with the blanking male die and the blanking female die to blank materials.

Specifically, the device also comprises a precutting male die; the precutting male die is fixedly arranged on the upper die fixing part; the precutting male die penetrates through the material pressing plate and is in sliding fit with the material pressing plate and the female die plate; the female die plate is also provided with a blanking port, and the position of the blanking port is opposite to the pre-cutting male die.

More specifically, the device also comprises a punching male die; the punching male die is fixedly arranged on the lower die fixing part and penetrates through the blanking counter-pressing die to be in sliding fit with the blanking male die and the blanking female die.

The lower die fixing part comprises a female die fixing plate, a lower backing plate and a lower die plate; the female die plate, the female die fixing plate, the lower backing plate and the lower die plate are stacked in sequence and fixedly connected through screws; the bending lower die is fixedly connected with the lower die plate through screws; the upper die fixing part comprises an upper die plate and an upper base plate, wherein the upper die plate and the upper base plate are stacked in sequence and fixedly connected through screws.

Furthermore, the device also comprises a material pressing plate back plate; the pressure plate back plate is fixedly connected with the pressure plate through a screw; the upper bending die is fixedly connected with the pressure plate back plate through screws.

Furthermore, the blanking device also comprises a pressing insert and a blanking concave die insert; the material pressing insert is fixedly connected with the material pressing plate back plate through a screw; the blanking female die insert is fixedly connected with the female die fixing plate through a screw; the blanking counter-pressing die is arranged in the blanking female die insert and is in sliding connection with the blanking female die insert; the material pressing insert and the blanking die insert are matched to compress the material.

Specifically, the counter-pressure surface comprises a first counter-pressure surface and a second counter-pressure surface, and the first counter-pressure surface and the second counter-pressure surface are provided with a bending height difference; the material pressing insert comprises a first pressing surface and a second pressing surface; the height difference between the first pressing surface and the second pressing surface is the same as the bending height difference; the blanking female die insert comprises a first supporting surface and a second supporting surface; the height difference between the first supporting surface and the second supporting surface is the same as the bending height difference; the first pressing surface is opposite to the first supporting surface; and the second pressing surface is opposite to the second supporting surface.

The other concrete is that the device also comprises an inner guide post, a positioning pin, a sliding screw and a guide plate; the guide plate is fixedly connected with the material pressing plate through a screw; one end of the sliding screw is fixedly connected with the guide plate, and the other end of the sliding screw is connected with the upper template in a sliding manner; the positioning pin is fixedly arranged on the lower base plate and penetrates through the blanking female die insert; the pressing insert is provided with a positioning hole, and the positioning hole is opposite to the positioning pin; the inner guide pillar is fixedly arranged on the lower die plate and penetrates through the lower backing plate, the female die fixing plate, the female die plate and the material pressing plate.

The device also comprises an upper force transmission rod and a lower force transmission rod; the upper force transmission rod penetrates through the upper template and the upper backing plate and is connected with the backing plate of the pressure plate; the lower dowel bar penetrates through the lower template, the lower backing plate and the female die fixing plate and then is connected with the blanking back-pressure die.

Furthermore, the device also comprises a material guiding mechanism, wherein the material guiding mechanism comprises a material guiding screw rod group and a material guiding rod.

The utility model discloses the beneficial effect who reaches: a composite stamping die, comprising: the blanking device comprises an upper die fixing part, a material pressing plate, a concave die plate, a lower die fixing part, a blanking concave-convex die, a blanking counter-pressing die, a bending upper die and a bending lower die; through the shape assorted back pressure face that sets up on blanking back pressure mould and the face of bending down of the lower mould, when making the part carry out the blanking after bending, location that can be more accurate, simultaneously, because the back pressure face can laminate completely with the bottom surface of part, the atress is more even when the punching press blanking, more can guarantee the functional strength of the part of preparation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a composite stamping die according to an embodiment of the present application.

In the day, fig. 1 includes:

11. mounting a template; 12. an upper base plate; 21. a material pressing plate; 22. a pressure plate backing plate; 23. a guide plate;

31. a cavity plate; 32. fixing a female die plate; 33. a lower base plate; 34. a lower template;

41. bending the upper die; 42. bending the lower die; 51. pressing an insert; 511. a first pressing surface; 512. a second compression surface;

52. blanking die inserts; 521. a first support surface; 522. a second support surface;

61. blanking a concave-convex die; 62. blanking and counter-pressing; 621. a first counter-pressure surface; 622. a second counter-pressure surface;

71. positioning pins; 72. an inner guide post; 73. a female die supporting rod; 74. a sliding screw;

75. an upper force transmission rod; 76. a lower dowel bar; 81. pre-cutting the male die; 82. punching a male die;

91. a material guiding screw group; 92. a material guiding rod.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below through embodiments with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example one

As shown in fig. 1, a composite press mold includes: the upper die fixing part, the material pressing plate 21, the concave die plate 31, the lower die fixing part, the blanking concave-convex die 61, the blanking counter-pressing die 62, the bending upper die 41 and the bending lower die 42.

The upper die fixing part is fixedly connected with the blanking concave-convex die 61, and the blanking concave-convex die 61 penetrates through the material pressing plate 21 and is in sliding fit with the material pressing plate 21. The bending upper die 41 is fixedly connected with the material pressing plate 21, and the bending upper die 41 is provided with an upper bending surface; the lower die fixing part is respectively fixedly connected with the concave die plate 31 and the bending lower die 42; the material pressing plate 21 and the concave template 31 are matched to compress the material; the lower bending die 42 is provided with a lower bending surface, and the shape and the position of the lower bending surface are matched with those of the upper bending surface to match with the material to be bent. The shape of the plane material after bending has a shape change with a height difference on the horizontal plane. The blanking counter-pressing die 62 is provided with a counter-pressing surface, and the shape of the counter-pressing surface is matched with that of the lower bending surface; the blanking counter-pressing die 62 is connected with the lower die fixing part in a sliding mode and matched with the blanking male die 61 to blank materials, and punching of the appearance of the part is completed.

Through set up on blanking counter-pressure mould 62 with the shape assorted counter-pressure face of the face of bending down of the lower mould 42 that bends, make the part when the blanking is carried out to the back of bending, location that can be more accurate, simultaneously, because the counter-pressure face can laminate completely with the bottom surface of the material after the bending, the atress is more even when the punching press blanking, guarantees the functional strength of the part of preparation.

Specifically, the upper die fixing portion includes an upper die plate 11 and an upper pad 12, and the upper die plate 11 and the upper pad 12 are stacked in sequence and fixedly connected by screws. The lower die fixing part comprises a female die fixing plate 32, a lower backing plate 33 and a lower die plate 34; the female die plate 31, the female die fixing plate 32, the lower backing plate 33 and the lower die plate 34 are sequentially stacked and fixedly connected through screws; the bending lower die 42 is fixedly connected with the lower die plate 34 through screws.

More specifically, the composite stamping die further comprises a material pressing plate back plate 22; the pressure plate back plate 22 is fixedly connected with the pressure plate 21 through a screw; the bending upper die 41 is fixedly connected with the pressure plate back plate 22 through screws.

More specifically, the composite punching die further includes a pre-cutting punch 81 and a punching punch 82. The precutting male die 81 is fixedly mounted on the upper die fixing portion. More specifically, the precut male die 81 is fixedly mounted to the upper backing plate 12; the precut male die 81 penetrates through the pressure plate 21 and the pressure plate back plate 22 and is in sliding fit with the pressure plate 21, the pressure plate back plate 22 and the female die plate 31. The pre-cutting male die 81 completes pre-cutting of the part by moving from top to bottom to the material to cut the material. The cavity plate 31 is further provided with a blanking port, which is opposite to the pre-cutting convex die 81 and is used for taking away the waste after blanking. The punching male die 82 is fixedly mounted on the lower die fixing portion. More specifically, the punching male die 82 is fixedly mounted on the die holder 32 and passes through the blanking counter-die 62 to be slidably engaged with the blanking male and female dies 61. After the blanking counter-pressing die 62 and the blanking male and female dies 61 are matched to blank materials, the materials can further pass through the punching male die 82 to complete punching of holes of parts.

Further, the blanking die comprises a material pressing insert 51 and a blanking die insert 52; the material pressing insert 51 is fixedly connected with the material pressing plate back plate 22 through screws; the blanking die insert 52 is fixedly connected with the die fixing plate 32 through screws; the blanking counter-pressing die 62 is arranged in the blanking die insert 52 and is connected with the blanking die insert 52 in a sliding manner; the material pressing insert 51 and the blanking die insert 52 are matched to compress the material. The blanking concave-convex die 61, the blanking counter-pressing die 62, the bending upper die 41, the bending lower die 42, the pressing insert 51 and the blanking die insert 52 can be disassembled, assembled and replaced according to actual needs, and the replacement mode is simple and convenient.

Furthermore, the back pressure surface of the blanking counter-pressure die 62 comprises a first back pressure surface 621 and a second back pressure surface 622, and the first back pressure surface 621 and the second back pressure surface 622 are provided with a bending height difference; the swaging insert 51 comprises a first pressing surface 511 and a second pressing surface 512; the height difference between the first pressing surface 511 and the second pressing surface 512 is the same as the press bending height difference; the blanking die insert 52 comprises a first support surface 521 and a second support surface 522; the height difference between the first supporting surface 521 and the second supporting surface 522 is the same as the press bending height difference; the first pressing surface 511 is opposite to the first supporting surface 521; opposite the second compression surface 512 and the second support surface 522. When the pressing insert 51 and the blanking die insert 52 are matched to press the material, the shape of the material is matched with that of the bent material, so that the back pressure surface of the blanking counter-pressing die 62 can be completely attached to the bottom surface of the bent material.

More specifically, the composite stamping die further comprises an inner guide post 72, a positioning pin 71, a female die support rod 73, a sliding screw 74, a guide plate 23, an upper force transmission rod 75 and a lower force transmission rod 76;

the die support rod 73 penetrates through the lower template 34 and the lower backing plate 33 and is fixedly connected with the die fixing plate 32.

The guide plate 23 is fixedly connected with the pressure plate 21 through a screw; one end of the sliding screw 74 is fixedly connected with the guide plate 23, and the other end is connected with the upper template 11 in a sliding manner; the upper force rod 75 penetrates the upper platen 11 and the upper backing plate 12, and is connected to the blank holder back plate 22, so that the blank holder 21 moves up and down relative to the upper platen 11 via the upper force rod 75.

The inner guide post 72 is fixedly mounted on the lower die plate 34 and penetrates through the lower backing plate 33, the die fixing plate 32, the die plate 31 and the pressure plate 21 so as to guide the die plate 31 and the pressure plate 21.

One end of the positioning pin 71 is fixedly arranged on the lower backing plate 33 and penetrates through the blanking die insert 52; the material pressing insert 51 is provided with a positioning hole which is opposite to the positioning pin 71; after the composite stamping die is closed, the other end of the positioning pin 71 is accommodated in the positioning hole, so that the positioning precision of the die is further improved.

The lower dowel bar 76 penetrates through the lower die plate 34, the lower backing plate 33 and the die fixing plate 32 and then is connected with the blanking counter-pressing die 62 to push the blanking counter-pressing die 62 to move from bottom to top to the material, and the lower dowel bar is abutted to the bottom surface of the material and supports the material.

Further, the composite stamping die further comprises a material guiding mechanism, wherein the material guiding mechanism comprises a material guiding screw group 91 and a material guiding rod 92, and the material guiding screw group and the material guiding rod are used for conveying materials to different stations.

When the blanking die is used, a material is placed on the concave die plate 31, the material pressing plate 21 descends to the surface of the material and is matched with the concave die plate 31 to tightly press the material, the upper die plate 11 continues to be pressed downwards to drive the pre-cutting convex die 81 to descend to pre-cut the material, and the cutting waste materials enter the blanking port of the concave die plate 31. After the previous step is completed, the material guiding mechanism transfers the material by a step pitch, and the operation of the second step is carried out. In the second step, the pressure plate 21 moves downward again, and the upper bending die 41 and the lower bending die 42 are matched to press and press the material again, so that the upper surface and the lower surface of the material are respectively abutted against the upper bending surface of the upper bending die 41 and the lower bending surface of the lower bending die 42 and are completely attached to each other. And after the second process step bending is finished, performing third process step operation: the material guide mechanism transfers the material by a step pitch again, the pressure plate 21 descends again, and the material is pressed tightly by matching the pressure insert 51 and the blanking die insert 52; the upper die plate 11 continues to press downwards to drive the blanking male die 61 to move downwards to blank the material, so that the material is abutted against the blanking counter-pressing die 62 to complete the punching of the appearance of the part; since the punching male die 82 protrudes out of the surface of the blanking counter-pressing die 62, when the blanking male die 82 punches the material by using the blanking male die 61, the punching is completed at the same time. After the part is blanked, the upper force lever 75 pushes the pressing plate back plate 22 and the pressing plate 21 downwards, and the waste is pushed out to be separated from the blanking male die 61; the blanking counter die 62 is pushed upwards by the lower dowel bar 76, and the punched part of the product is pushed out to be separated from the blanking concave-convex die 61.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A composite stamping die, comprising: the blanking device comprises an upper die fixing part, a material pressing plate, a concave die plate, a lower die fixing part, a blanking concave-convex die, a blanking counter-pressing die, a bending upper die and a bending lower die;

the upper die fixing part is fixedly connected with the blanking male die, and the blanking male die penetrates through the material pressing plate and is in sliding fit with the material pressing plate;

the bending upper die is fixedly connected with the pressure plate and provided with an upper bending surface;

the lower die fixing part is respectively and fixedly connected with the concave die plate and the bending lower die;

the material pressing plate and the concave template are matched to compress materials;

the lower bending die is provided with a lower bending surface, and the shape and the position of the lower bending surface are matched with those of the upper bending surface to match with a bending material;

the blanking counter-pressing die is provided with a counter-pressing surface, and the shape of the counter-pressing surface is matched with that of the lower bending surface; the blanking counter-pressing die is connected with the lower die fixing part in a sliding mode and matched with the blanking male die and the blanking female die to blank the materials.

2. A composite stamping die as claimed in claim 1, wherein: also comprises a precutting convex die;

the precutting male die is fixedly arranged on the upper die fixing part;

the precutting male die penetrates through the material pressing plate and is in sliding fit with the material pressing plate and the concave die plate;

the die plate is also provided with a blanking port, and the position of the blanking port is opposite to the pre-cutting male die.

3. A composite stamping die according to claim 1, wherein: the device also comprises a punching male die;

and the punching male die is fixedly arranged on the lower die fixing part and penetrates through the blanking counter-pressing die to be in sliding fit with the blanking male die and the blanking female die.

4. A composite stamping die according to any of claims 1 to 3, wherein:

the lower die fixing part comprises a female die fixing plate, a lower backing plate and a lower die plate;

the female die plate, the female die fixing plate, the lower backing plate and the lower die plate are stacked in sequence and fixedly connected through screws;

the bending lower die is fixedly connected with the lower die plate through a screw;

the upper die fixing part comprises an upper die plate and an upper base plate, wherein the upper die plate and the upper base plate are stacked in sequence and fixedly connected through screws.

5. The composite stamping die of claim 4, wherein: the device also comprises a material pressing plate back plate;

the material pressing plate back plate is fixedly connected with the material pressing plate through a screw;

the upper bending die is fixedly connected with the pressure plate back plate through screws.

6. The composite stamping die of claim 5, wherein: the blanking die comprises a blanking die insert and a pressing insert;

the material pressing insert is fixedly connected with the material pressing plate back plate through a screw;

the blanking female die insert is fixedly connected with the female die fixing plate through a screw; the blanking backward pressing die is arranged in the blanking female die insert and is in sliding connection with the blanking female die insert;

the material pressing insert and the blanking female die insert are matched to compress materials.

7. The composite stamping die of claim 6, wherein:

the counter-pressure surface comprises a first counter-pressure surface and a second counter-pressure surface, and the first counter-pressure surface and the second counter-pressure surface are provided with bending height differences;

the material pressing insert comprises a first pressing surface and a second pressing surface; the height difference between the first pressing surface and the second pressing surface is the same as the bending height difference;

the blanking female die insert comprises a first supporting surface and a second supporting surface; the height difference between the first supporting surface and the second supporting surface is the same as the bending height difference;

the first pressing surface is opposite to the first supporting surface; the second pressing surface is opposite to the second supporting surface.

8. A composite stamping die according to claim 6, wherein: the device also comprises an inner guide post, a positioning pin, a sliding screw and a guide plate;

the guide plate is fixedly connected with the pressure plate through a screw;

one end of the sliding screw is fixedly connected with the guide plate, and the other end of the sliding screw is connected with the upper template in a sliding manner;

the positioning pin is fixedly arranged on the lower base plate and penetrates through the blanking female die insert; the material pressing insert is provided with a positioning hole, and the positioning hole is opposite to the positioning pin;

the inner guide pillar is fixedly installed on the lower die plate and penetrates through the lower backing plate, the female die fixing plate, the female die plate and the material pressing plate.

9. A composite stamping die according to any of claims 5 to 8, wherein: the device also comprises an upper force transmission rod and a lower force transmission rod;

the upper force transmission rod penetrates through the upper template and the upper backing plate and is connected with the backing plate of the pressure plate;

and the lower dowel bar penetrates through the lower template, the lower backing plate and the female die fixing plate and is connected with the blanking counter-pressure die.

10. A composite stamping die as claimed in claim 9, wherein: the device also comprises a material guiding mechanism, wherein the material guiding mechanism comprises a material guiding screw rod group and a material guiding rod.