CN214349055U - Hardware stamping and stretching die - Google Patents

Abstract

The utility model relates to a hardware stamping and stretching die, the die comprises an upper die and a lower die which are correspondingly assembled, a movable block is arranged in an upper forming body of the upper die, the movable block is provided with a reset rod and a reverse ejector rod, a first spring group is arranged between the movable block and an upper supporting plate above the movable block, and the first spring group elastically supports the movable block against the bottom end of a first movable stroke; the lower die is provided with a lower supporting plate, a stripping plate assembly and a male clamp assembly, and a second spring group is arranged between the lower supporting plate and the stripping plate assembly so as to enable a second movable stroke to be formed between the lower supporting plate and the stripping plate assembly; the stripping component is provided with a movable material bearing ring, and the material bearing ring is provided with a stretching column. The hardware is stretched and stripped, so that one-step operation is avoided, the moving stroke control corresponding to the die structure is adopted, the smooth material stripping action is favorably finished, and the pulling damage phenomenon in material stripping is effectively avoided.

Description

Hardware stamping and stretching die

Technical Field

The utility model relates to a mould, especially the stamping and drawing mould of hardware.

Background

Many hardware need have the appearance of space casing because of structural reason, and the appearance of this kind of space casing adopts the tensile mould of five metals punching press to process production generally, and the mould includes mould, lower mould, goes up mould, lower mould and realizes the punching press of hardware through the process of compound die, die sinking and stretch, takes off the material operation. Generally, the stretching and stripping of the existing mold are one-step, namely, the stretching and stripping of hardware wrapped on a stretching column after stretching forming are finished by a single action, and the condition of unsmooth stripping or breakage due to pulling often occurs, so that the existing mold has the need of improvement.

SUMMERY OF THE UTILITY MODEL

One technical problem that this aspect of this disclosure solved is to provide an improved five metals stamping and drawing mould.

The utility model provides a technical scheme that its technical problem adopted is: hardware punching press drawing die utensil, the mould is including corresponding last mould, the lower mould of assembling.

The upper die is provided with an upper forming body and an upper supporting plate, a movable block with a first movable stroke is installed in the upper forming body, a reset rod and a reverse ejector rod are arranged below the movable block, the upper supporting plate is installed above the movable block, a first spring group is configured between the upper supporting plate and the upper supporting plate, and the first spring group elastically abuts against the bottom end of the first movable stroke to push the reset rod downwards, and the reverse ejector rod pushes the bottom end of the reverse ejector rod to be flush with the bottom of a forming cavity in the upper forming body.

The lower die is provided with a lower forming body and a lower supporting plate, the lower forming body comprises an upper and lower corresponding stripping plate assembly and a male clamp assembly, the lower supporting plate is arranged below the lower forming body, and a second spring group is arranged between the lower supporting plate and the stripping plate assembly, so that the stripping plate assembly has a second moving stroke compared with the male clamp assembly.

The demoulding component is provided with a stroke cavity, the stroke cavity is provided with a material bearing ring corresponding to the forming cavity, the material bearing ring is provided with an inner hole which penetrates through the material bearing ring from top to bottom, the material bearing ring is ejected upwards by a spring ejector rod arranged on the lower supporting plate, the stroke cavity is provided with a limiting part for correspondingly limiting the ejected height of the material bearing ring, and the material bearing ring is provided with a stretching column corresponding to the inner hole of the material bearing ring so as to be pressed into the forming cavity through the inner hole during mould closing.

The elasticity of the first spring group is larger than the sum of the elasticity of the second spring group and the elasticity of the spring ejector rod.

According to the hardware stamping and stretching die, the stretching column is fixedly arranged on the male clamp assembly, and the top end of the stretching column corresponds to the bottom of the inner hole of the material bearing ring in the die opening state; the height of the inner hole corresponds to the second movable stroke length.

The hardware stamping and stretching die comprises an upper die base, an upper base plate and an upper female die, wherein the upper die base, the upper base plate and the upper female die are fixedly stacked; the upper die base is internally provided with a cavity matched with the movable block, the reset rod and the reverse ejector rod are arranged in the upper base plate and the upper female die in a penetrating mode, and the forming cavity is arranged in the upper female die.

The hardware stamping and stretching die comprises a stripping plate assembly, a stripping pad assembly and a male clamp assembly, wherein the stripping plate assembly comprises a lower stripping plate and a lower stripping pad which are fixedly stacked, and the male clamp assembly comprises a lower male clamp, a lower male clamp pad and a lower die holder which are fixedly stacked; the demoulding component is provided with a limiting cavity matched with the second spring set, and the male clamp component is provided with a through hole for the second spring set to penetrate through.

As before tensile mould of five metals punching press, hold the material circle including circle body, circle body bottom periphery is equipped with the bottom plate, spring ejector pin support in the bottom plate below, spacing portion is in the bottom plate top.

One advantageous effect brought by one aspect of the present disclosure: the improved die can realize the stripping action of the stretched hardware.

Drawings

Certain embodiments of the invention will now be described in detail, by way of example and not limitation, with reference to the figures, in which like reference numerals identify identical or similar parts or features. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.

In the drawings:

FIG. 1 is a partial schematic view of the initial mold opening state of the present invention;

FIG. 2 is a partial schematic view of the first state of the mold assembly of the present invention;

FIG. 3 is a schematic view showing the completion state of mold closing according to the present invention;

FIG. 4 is a schematic view of the first state of the mold opening after stretching;

FIG. 5 is a schematic view of the state of the mold opening completion after stretching of the present invention;

FIG. 6 is a schematic view of the material-holding ring of the present invention;

FIG. 7 is a schematic view of the drawing change of the hardware according to the present invention;

the designations in the figures illustrate the following:

1. an upper die; 2. a lower die; 3. an upper forming body; 4. an upper supporting plate; 5. a first spring set; 6. a movable block; 7. a reverse ejector rod; 8. a reset lever; 9. an upper die holder; 10. an upper base plate; 11. a female die is arranged; 12. a lower molding body; 13. a stripping assembly; 14. a male clip assembly; 15. a lower supporting plate; 16. a second spring set; 17. a stroke chamber; 18. a material bearing ring; 180. an inner bore; 181. looping; 182. a base plate; 19. a spring ejector rod; 20. Stretching the column; 21. a limiting part; 22. hardware.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them.

All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Referring to fig. 1-6, a hardware stamping and drawing die is shown, which comprises an upper die 1 and a lower die 2 assembled correspondingly. Go up mould 1 and have last formed body 3, upper bracket plate 4, install the movable block 6 that possesses first activity stroke in going up the formed body 3, movable block 6 below is provided with release link 8, anti-ejector pin 7, install 6 tops of movable block upper bracket plate 4, dispose first spring assembly 5 between the two, first spring assembly 5 will movable block 6 elasticity support hold in first activity stroke bottom, in order to will release link 8 is to pushing down, will anti-ejector pin 7 push to its bottom with become the die cavity bottom parallel and level in the formed body, when movable block 6 was in the bottom of first activity stroke promptly, the formed body 3 was exposed outward in the bottom of release link 8, and anti-ejector pin 7 then is the registrate of bottom parallel and level in the die cavity.

The lower die 2 is provided with a lower forming body 12 and a lower supporting plate 15, the lower forming body 12 comprises a stripping plate assembly 13 and a male clamp assembly 14 which correspond to each other vertically, the lower supporting plate 15 is arranged below the lower forming body 12, and a second spring group 16 is arranged between the lower supporting plate 15 and the stripping plate assembly 13, so that the stripping plate assembly 13 has a second moving stroke compared with the male clamp assembly 14. The positions of the lower supporting plate 15 and the male clamp assembly 14 in the lower die 2 are relatively fixed, and the stripper plate assembly 13 is supported by the elastic force of the second spring set 16 and has a distance (corresponding to a second movable stroke) with the male clamp assembly 14.

The stripper plate assembly 13 is provided with a stroke cavity 17, the stroke cavity 17 is provided with a material bearing ring 18 corresponding to the forming cavity, the material bearing ring 18 is provided with an inner hole 180 which penetrates through the material bearing ring up and down, the material bearing ring 18 is ejected upwards by a spring ejector rod 19 arranged on the lower supporting plate 15, the stroke cavity 17 is provided with a limiting part 21 so as to correspondingly limit the ejected height of the material bearing ring 18, and the material bearing ring 18 is provided with a stretching column 20 corresponding to the inner hole 180 so as to be pressed into the forming cavity through the inner hole 180 during die assembly. The elastic force of the first spring group 5 is larger than the sum of the elastic forces of the second spring group 16 and the spring top rod 19, for example, 1.5 times of the sum of the two.

Referring to fig. 1, when the upper die 1 and the lower die 2 are in the combined initial state, a hardware 22 to be processed is placed on the material bearing ring 18, and then the press presses the upper die 1 to move down. Referring to fig. 2, when the upper die 1 moves downward, the release rod 8 whose bottom end is pushed out first contacts with the release plate assembly 13 of the lower die 2, a space with a second movable stroke is formed between the release plate assembly 13 and the lower male clamp assembly 14, the release plate assembly 13 is elastically supported by the second spring set 16, and the elastic force of the first spring set 5 pushing out the release rod 8 is larger, so that the release plate assembly 13 is pushed downward by the release rod 8 to close the lower fixed male clamp assembly 14. In the process, the material ring 18 on the stripper unit 13 is simultaneously lowered by the influence of the retainers 21, so that the tension columns 20 start to be pressed into the inner bore 180 of the material ring 18.

Referring to fig. 3, the upper die 1 continues to move downward under the action of the press, and since there is no downward space after the stripper assembly 13 and the male clamp assembly 14 are closed, the reset rod 8 moves upward and retracts into the upper forming body 3 under the action of the reverse ejection (at this time, the first spring assembly 5 is subjected to force energy storage), the movable block 6 and the reverse ejection rod 7 move upward simultaneously (i.e., move toward the head end of the first movable stroke), and the upward movement of the reverse ejection rod 7 yields out of the forming cavity. Meanwhile, the upper die 1 continuously moves downwards to enable the hardware 22, the material bearing ring 18 and the spring ejector rod 19 to be subjected to downward acting force, the hardware 22 is upwards pressed into the forming cavity by the stretching column 20 corresponding to the inner hole 180 of the material bearing ring 18, stretching of the hardware 22 is completed, the stretched hardware can refer to the drawing in fig. 7, the material bearing ring 18 moves downwards along the stroke cavity 17, and the spring ejector rod 19 is in a stressed and compressed state.

Referring to fig. 4, after the stretching is completed, the mold is opened, the upper mold 1 is driven to move upwards along with the upward movement of the press, and because the first spring group 5 needs to release energy firstly, along with the upward movement of the upper molded body 3, the bottom end of the reset rod 8 is pushed out oppositely and is abutted against the stripper plate assembly 13 to prevent the stripper plate assembly 13 from being separated from the male clamp assembly 14, and meanwhile, the reverse ejector rod 7 moves forwards towards the bottom of the molding cavity again, so that the stretched hardware 22 is pushed out.

Referring to fig. 5, the press continues to move upward until the reset rod 8 is completely taken away from the lower die 2, the pressing force of the reset rod 8 is lost, the stripper plate assembly 13 and the material bearing ring 18 move upward under the action of the elastic force, and the hardware 22 sleeved on the stretching column 20 is stripped. And then, resetting to the mold opening state, taking the hardware 22 which finishes stretching, placing the hardware 22 to be processed next on the material bearing ring 18, and entering the next cycle.

Therefore, the drawing and stripping of the hardware 22 avoid one-step operation, and are controlled by the corresponding movable stroke of the die structure, which is beneficial to smoothly finishing stripping action and effectively avoiding the phenomenon of pulling damage in stripping.

Specifically, the stretching column 20 is fixedly mounted on the male clip assembly 14, and the top end of the stretching column 20 corresponds to the bottom of the inner hole 180 of the material-bearing ring 18 in the mold opening state; the height of the inner bore 180 corresponds to the second active stroke length. When the release plate component 13 is pressed downwards by the reset rod 8 to be closed with the male clamp component 14, the stretching column 20 just penetrates into the top of the inner hole 180 of the material bearing ring 18 and is abutted against the lower part of the hardware 22, and when the upper die 1 continues to descend, the stretching column 20 just presses the hardware 22 into the forming cavity.

In some embodiments, the upper forming body 3 comprises an upper die holder 1, an upper backing plate 10 and an upper female die 11 which are fixed in a stacked manner; the die is characterized in that a cavity is arranged in the upper die holder 1 to be matched with the movable block 6, the reset rod 8 and the reverse ejector rod 7 are arranged in the upper backing plate 10 and the upper female die 11 in a penetrating mode, and the forming cavity is arranged in the upper female die 11.

In some embodiments, the stripper plate assembly 13 comprises a lower stripper plate and a lower stripper plate pad which are fixed in a stacked manner, and the male clamp assembly 14 comprises a lower male clamp and a lower male clamp pad which are fixed in a stacked manner, and a lower die 2 seat; the stripper plate assembly 13 is provided with a limiting cavity to be matched with the second spring set 16, and the male clamp assembly 14 is provided with a through hole for the second spring set 16 to pass through. The first spring group 5 and the second spring group 16 may each include two independent springs, and the uniform layout facilitates the uniform application of the elastic force to the corresponding structures.

In some embodiments, the material-holding ring 18 includes a ring body 181, a bottom plate 182 is disposed on the periphery of the bottom of the ring body 181, the spring top bar 19 is supported below the bottom plate 182, and the limiting portion 21 is located above the bottom plate 182. Specifically, the limiting portion 21 may be a plate fixedly mounted at the vertex angle of the stroke cavity 17, and cooperates with the bottom plate 182 to press the material bearing ring 18. The lower forming body 12 is provided with four corresponding through holes for the spring push rods 19 to pass through the spring push rods 19, the bottoms of the four through holes are springs, the upper parts of the four through holes are sleeved with the push rods, the bottom ends of the springs are abutted against the lower supporting plate 15, the top ends of the springs are abutted against the push rods, and the upper top ends of the push rods are abutted against the top corners of the bottom plate 182 of the material bearing ring 18.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified, combined, and varied by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (5)

1. Tensile mould of five metals punching press, the mould is including corresponding last mould, the lower mould of equipment, its characterized in that:

the upper die is provided with an upper forming body and an upper supporting plate, a movable block with a first movable stroke is installed in the upper forming body, a reset rod and a reverse ejector rod are arranged below the movable block, the upper supporting plate is installed above the movable block, a first spring group is arranged between the upper forming body and the movable block, the first spring group elastically abuts against the bottom end of the first movable stroke, the reset rod is pushed downwards, and the reverse ejector rod is pushed to the bottom end of the reverse ejector rod to be flush with the bottom of a forming cavity in the upper forming body;

the lower die is provided with a lower forming body and a lower supporting plate, the lower forming body comprises an upper demoulding component and a lower male clamping component which correspond to each other vertically, the lower supporting plate is arranged below the lower forming body, and a second spring group is arranged between the lower supporting plate and the demoulding component, so that the demoulding component has a second moving stroke compared with the male clamping component;

the stripper plate assembly is provided with a stroke cavity, the stroke cavity is provided with a material bearing ring corresponding to the forming cavity, the material bearing ring is provided with an inner hole which penetrates through the material bearing ring up and down, the material bearing ring is ejected upwards by a spring ejector rod arranged on the lower supporting plate, the stroke cavity is provided with a limiting part so as to correspondingly limit the ejected height of the material bearing ring, and the material bearing ring is provided with a stretching column corresponding to the inner hole of the material bearing ring so as to be pressed into the forming cavity through the inner hole when the die is closed;

the elasticity of the first spring group is larger than the sum of the elasticity of the second spring group and the elasticity of the spring ejector rod.

2. The hardware stamping and stretching die of claim 1, wherein:

the stretching column is fixedly arranged on the male clamp assembly, and the top end of the stretching column corresponds to the bottom of the inner hole of the material bearing ring in the die opening state; the height of the inner hole corresponds to the second movable stroke length.

3. The hardware stamping and stretching die of claim 2, wherein:

the upper forming body comprises an upper die holder, an upper base plate and an upper female die which are fixedly stacked;

the upper die base is internally provided with a cavity matched with the movable block, the reset rod and the reverse ejector rod are arranged in the upper base plate and the upper female die in a penetrating mode, and the forming cavity is arranged in the upper female die.

4. The hardware stamping and stretching die of claim 3, wherein:

the stripper plate assembly comprises a lower stripper plate and a lower stripper plate pad which are fixedly stacked, and the male clamp assembly comprises a lower male clamp, a lower male clamp pad and a lower die holder which are fixedly stacked; the demoulding component is provided with a limiting cavity matched with the second spring set, and the male clamp component is provided with a through hole for the second spring set to penetrate through.

5. The hardware stamping and stretching die of claim 4, wherein:

the material bearing ring comprises a ring body, a bottom plate is arranged on the periphery of the bottom of the ring body, the spring ejector rod is supported below the bottom plate, and the limiting part is located above the bottom plate.

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