CN210138983U

CN210138983U - Blanking force reducing composite die for thick material connecting clamp

Info

Publication number: CN210138983U
Application number: CN201920475861.3U
Authority: CN
Inventors: 雷世俊
Original assignee: Heshan Liansu Industrial Development Co Ltd
Current assignee: Heshan Liansu Industrial Development Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2020-03-13
Anticipated expiration: 2029-04-08

Abstract

The utility model relates to the technical field of punching processing, in particular to a thick material connecting clamp composite die for reducing blanking force, which comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die base, an upper padding plate and an upper die fixing plate which are sequentially arranged from top to bottom, and a first spring assembly is also arranged in the upper die part; the lower die part comprises a stripper plate, a lower die fixing plate and a lower die base which are sequentially arranged from top to bottom, a male die and a female die are embedded in the stripper plate, and a second spring assembly is also arranged in the lower die part; the lower surface of the upper die fixing plate is provided with a concave die plate, the lower surface of the concave die plate is provided with a plurality of protrusions, a material returning assembly is arranged in the concave die plate, and the punch structure penetrates through the upper die fixing plate and the material returning assembly. The utility model can reduce the blanking force, reduce the noise decibel generated by the stamping operation and prolong the service life of the die; can reduce the labor and material cost, improve the production efficiency of products and can quickly discharge the products at one time.

Description

Blanking force reducing composite die for thick material connecting clamp

Technical Field

The utility model relates to a stamping processing technology field, more specifically relates to a thick material connector card reduces blanking power compound mould.

Background

The hardware fitting circulating in the market has various styles and structures. The siphon type roof rainwater drainage suspension system accessory connecting clamp is matched with a common pipe clamp for use, and the demand is large. At present, a large punch is generally used for a mould for a workpiece, the cost of labor and water is high, the noise is high, and the loss of a machine tool is large; in the punching process, the punch is easy to break or break; the blanking female die is fast worn, and the discharged sheet material part is uneven and easy to have large burrs; the typing process and the blanking and punching are not integrated, two sets of stamping dies are needed for production, and the production efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a thick material connecting clamp composite die capable of reducing the blanking force, reducing the noise decibel generated by the stamping operation and prolonging the service life of the die; can reduce the labor and material cost, improve the production efficiency of products and can quickly discharge the products at one time.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the composite die comprises an upper die part and a lower die part, wherein the upper die part is positioned right above the lower die part, the upper die part comprises an upper die base, an upper base plate and an upper die fixing plate which are sequentially arranged from top to bottom, a plurality of guide pillar through holes are formed in the upper die fixing plate, and a first spring assembly is also arranged in the upper die part; the lower die part comprises a stripper plate, a lower die fixing plate and a lower die base which are sequentially arranged from top to bottom, wherein the upper surface of the lower die fixing plate is provided with a plurality of guide pillars matched with the guide pillar through holes, a punch-die is embedded in the stripper plate, and a second spring assembly is also arranged in the lower die part; the lower surface of the upper die fixing plate is provided with a concave die plate, the lower surface of the concave die plate is provided with a plurality of protrusions, a material returning assembly is arranged in the concave die plate, the concave die plate is provided with a plurality of guide sleeve holes matched with the guide pillars, and the upper die fixing plate and the material returning assembly penetrate through a punch structure.

The utility model relates to a thick material connecting clamp reduces blanking force composite die and is provided with an upper die part and a lower die part, and the upper die part and the lower die part work in a matching way through mutual guiding of a guide pillar, a guide pillar via hole and a guide sleeve hole and the assistance of a spring assembly; the arrangement of the convex part on the lower surface of the concave template can reduce the blanking force and reduce the noise decibel generated by the stamping operation; the material returning assembly is arranged to simultaneously carry out the typing process and the blanking and punching, so that the production efficiency can be improved; the punch structure is arranged for punching to complete the hole opening operation.

In order to enable punching and typing on the plate material to be carried out simultaneously, the material returning assembly comprises an inner base plate, a character code block and an upper material returning plate, the character code block is embedded in the upper material returning plate, and the upper material returning plate is fixed below the inner base plate.

In order to safely and conveniently push out the workpiece, the lower surface of the upper stripper plate exceeds the lower surface of the concave template.

In order to be able to reduce the blanking force, the punch arrangement comprises several first punches and second punches, the heights of the first and second punches differing by 4mm, the first punches being located at the corners of the stripper assembly.

In order to prevent the punch structure from being broken, punch hanging tables are arranged at the tops of the first punch and the second punch and connected with the upper die fixing plate; the thickness of the punch hanging table is 6-12 mm.

In order to position the plate materials placed on the discharging plate, a floating pin and a third spring assembly penetrate through the discharging plate and the lower die seat of the lower die fixing plate from top to bottom.

In order to facilitate punching of the connecting card out of the concave template, a die handle is arranged on the upper surface of the upper die base, and a punching rod penetrates through the die handle and the upper die part.

In order to guide the up-and-down moving direction of the upper die part, a plurality of guide sleeve holes matched with the guide posts are arranged on the stripper plate, and the guide posts extend into the guide sleeve holes.

In order to improve the material returning effect of the die, the first spring assembly penetrates through the upper die base, the upper base plate and the upper die fixing plate; the second spring assembly penetrates through the lower die fixing plate and the lower die base.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) due to the arrangement of the convex parts on the lower surface of the concave die plate, the blanking force can be reduced, the noise decibel generated by stamping operation can be reduced, and the service life of the die can be prolonged.

(2) The arrangement of the inner backing plate, the character code blocks and the upper stripper plate enables the typing process and the blanking and punching to be carried out simultaneously, the production efficiency can be improved, and the leveling effect of plate material workpieces is improved.

(3) The arrangement of the height difference between the first punch and the second punch can reduce the punching force; the punch head hanging table is thick, so that the tensile stress of the punch head can be improved, and the punch head is prevented from being broken by pulling.

(4) The first spring assembly and the knock-pin are combined to unload together, so that the stripper plate can be balanced, and the punch is prevented from being broken due to unilateral pushing force.

Drawings

Fig. 1 is the utility model relates to a thick material connector card reduces blanking force composite die's schematic structure diagram.

Fig. 2 is a schematic view of the assembly of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

FIG. 4 is a schematic view of the cavity plate.

Fig. 5 is a schematic view of a usage state.

The graphic symbols are illustrated as follows:

1-knock rod, 2-die shank, 3-first plug screw, 4-upper die holder, 5-first spring, 6-upper backing plate, 7-punch structure, 71-first punch, 72-second punch, 8-upper die fixing plate, 9-inner backing plate, 10-code block, 11-upper stripper plate, 12-cavity plate, 121-bulge, 13-stripper plate, 14-punch-die, 15-guide column, 16-lower die fixing plate, 17-floating pin, 18-second spring, 19-lower die holder, 20-second plug screw, 21-third spring, 22-third plug screw, 23-plate, 24-connecting clamp and 25-guide sleeve hole.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example 1

Fig. 1 to 5 show a first embodiment of the thick material connecting clamp for reducing blanking force of the composite die of the present invention, which includes an upper die portion and a lower die portion, wherein the upper die portion is located right above the lower die portion, the upper die portion includes an upper die base 4, an upper padding plate 6 and an upper die fixing plate 8, which are sequentially arranged from top to bottom, the upper die fixing plate 8 is provided with a plurality of guide pillar via holes, and the upper die portion is further provided with a first spring assembly; the lower die part comprises a stripper plate 13, a lower die fixing plate 16 and a lower die holder 19 which are sequentially arranged from top to bottom, the upper surface of the lower die fixing plate 16 is provided with a plurality of guide posts 15 matched with the through holes of the guide posts, a punch-die 14 is embedded in the stripper plate 13, and a second spring assembly is also arranged in the lower die part; the lower surface of the upper die fixing plate 8 is provided with a concave die plate 12, the lower surface of the concave die plate 12 is provided with a plurality of protrusions 121, the concave die plate 12 is internally provided with a material returning assembly, the concave die plate is provided with a plurality of guide sleeve holes 25 matched with the guide pillars 15, and the upper die fixing plate 8 and the material returning assembly penetrate through a punch structure 7.

The upper die part and the lower die part are mutually guided and aligned through the guide post, the guide post through hole and the guide sleeve hole and assisted by the spring assembly, and the upper die part and the lower die part are matched for working; the arrangement of the convex part on the lower surface of the concave template can reduce the blanking force and reduce the noise decibel generated by the stamping operation; the material returning assembly is arranged to simultaneously carry out the typing process and the blanking and punching, so that the production efficiency can be improved; the punch structure is arranged for punching to complete the hole opening operation. As shown in fig. 4, the lower surface of the cavity plate 12 faces upward, the longitudinal section of the protrusion 121 is an isosceles trapezoid, and four protrusions are provided and located at the middle position of each edge of the lower surface of the cavity plate 12, respectively, as shown in fig. 4, the highest surface is a C surface, the lowest surface is a B surface, and the inclined surface is an a surface, so that a blanking shear line with a high-low straight joint appears at the square cutting edge. The fall between the surface B and the surface C is 4.5 mm. In the stamping process, the high point line of the surface C and the surface A plays a role in shearing, and after the sheet material 23 is torn, the low point line of the surface A and the surface B play a role in shearing, so that the blanking force can be reduced by the design.

In addition, the material returning assembly comprises an inner backing plate 9, a character code block 10 and an upper material returning plate 11, wherein the character code block 10 is embedded in the upper material returning plate 11, and the upper material returning plate 11 is fixed below the inner backing plate 9. The arrangement of the inner backing plate 9, the character block 10 and the upper stripper plate 11 enables punching and concave character forming on the plate to be carried out simultaneously. As shown in fig. 2, the upper surface of inner shim plate 9 is fixedly connected to upper mold fixing plate 8 in this embodiment.

Wherein the lower surface of the upper stripper plate 11 exceeds the lower surface of the cavity plate 12. The lower surface of the upper stripper plate 11 is arranged to be beyond, so that the workpiece can be safely and conveniently pushed out. As shown in FIG. 3, in the embodiment, the lower surface of the upper stripper plate 11 exceeds the lower surface of the cavity plate 12 by 2-3 mm, so that the phenomena of unsmooth material discharge and damage to the mold can be prevented.

In addition, the punch structure head 7 comprises a plurality of first punches 71 and second punches 72, the heights of the first punches 71 and the second punches 72 are different by 4mm, and the first punches 71 are positioned at the corners of the material returning assembly. The provision of the height difference between the first punch 71 and the second punch 72 can reduce the punching force. As shown in fig. 1 and 3, in the present embodiment, through holes matched with the first punch 71 and the second punch 72 are formed in the inner shim plate 9 and the upper stripper plate 11; the upper stripper plate 11 is in sliding fit with the concave template 12, the first punch 71 and the second punch 72 in a small gap, the gap between the two sides is 0.06-0.08 mm, and the punch structure can be protected. In the present embodiment, four first punches 71 and four second punches 72 are provided, and the four first punches 71 penetrate through the corner positions of the inner shim plate 9 and the upper stripper plate 11, respectively.

The top parts of the first punch 71 and the second punch 72 are respectively provided with a punch hanging table, and the punch hanging tables are connected with the upper die fixing plate 8; the thickness of the punch hanging table is 6-12 mm. The arrangement of the punch hanging table can prevent the punch from being easily broken. As shown in FIG. 3, the thickness of the punch hanging table is set to be 12mm in the embodiment, and the thickness setting can increase hanging force, reduce punch replacement and prolong the service life of the die.

In addition, a floating pin 17 and a third spring assembly penetrate through the three parts of the stripper plate 13, the lower die fixing plate 16 and the lower die base 19 from top to bottom. The arrangement of the lift pins 17 and the third spring assembly enables positioning of the sheet placed on the stripper plate 13. As shown in fig. 1 to 3, the third spring assembly in this embodiment includes a third spring 21 and a third screw plug 22, one end of the third spring 21 abuts against the lift pin 17, and the other end of the third spring is locked by the third screw plug 22 penetrating from the lower surface of the lower die base 19.

In addition, the upper surface of the upper die base 4 is provided with a die handle 2, and a striking rod 1 penetrates through the die handle 2 and the upper die part. The striking rod 1 and the die shank 2 are arranged to facilitate the striking of the connecting card from the cavity plate 12. As shown in fig. 1 to 3, in the present embodiment, the striking rod 1 penetrates through the die shank 2, the upper die base 4, the upper backing plate 6 and the upper die fixing plate 8, and the bottom of the striking rod 1 acts on the inner backing plate 9.

In addition, a plurality of guide sleeve holes 25 matched with the guide posts 15 are formed in the discharging plate 13, the guide posts 15 extend into the guide sleeve holes 25, and the guide sleeve holes 25 can guide the upper die part to move up and down.

In addition, the first spring assembly penetrates through the upper die holder 4, the upper backing plate 6 and the upper die fixing plate 8; the second spring assembly extends through the lower die holding plate 16 and the lower die holder 19. The material returning effect of the die can be improved by the penetrating arrangement of the first spring assembly and the second spring assembly. As shown in fig. 1 to 3, the first spring assembly in this embodiment includes a first spring 5 and a first screw plug 3, one end of the first spring 5 abuts against the inner backing plate 9, and the other end of the first spring is locked by the first screw plug 3 penetrating from the upper surface of the upper die base 4. The second spring assembly comprises a second spring 18 and a second screw plug 20, one end of the second spring 18 is abutted to the lower surface of the stripper plate 13, and the other end of the second spring is penetrated and locked from the lower surface of the lower die base 19 through the second screw plug 20.

The working principle of the invention is as follows: as shown in figures 1 to 5, the opened slab 23 is placed on the stripper plate 13 with its head positioned by the lift pins 17. The upper die part moves downwards, the upper stripper plate 11 contacts the plate material 23, and the first spring 5 starts to compress; the upper stripper plate 11 retreats into the concave template 12, the concave template 12 presses the floating pin 17 to be flush with the plate 23, and then the concave template 12 starts to contact the plate 23, so that the plate 23 and the stripper plate 13 synchronously press downwards, and the second spring 18 compresses; the upper die part continuously descends, the male die and the female die 14 start to contact the sheet material 23 to form a cut with the female die plate 12, the sheet material 23 is torn, the punched connecting clamp 24 is pressed into the female die plate 12, the first punch 71 and the second punch 72 penetrate the connecting clamp 24, and punching is completed; the upper die part continuously presses downwards to a die dead point, the top surface of the inner backing plate 9 contacts the bottom surface of the upper die fixing plate 8, the marking work of the code block 10 is finished, and meanwhile the upper stripper plate 11 levels the connecting clamp 24. Then, the upper die part moves upwards, the second spring 18 resets, the concave die plate 12, the plate material 23, the discharging plate 13 and the floating pin 17 synchronously move upwards until the discharging plate 13 stops at the highest point, the concave die plate 12 leaves the plate material 23, the floating pin 17 is lifted to the highest point, and the lower die discharging is finished; the upper die part continuously moves upwards, the first spring 5 resets and starts to press down the upper stripper plate 11 in the concave die plate 12, when the upper die part moves upwards to the highest point of the punch press, the punch rod 1 is struck through the cross rod of the punch press and acts on the inner backing plate 9, the connecting clamp 24 is punched out of the concave die plate 12, and the upper die unloading is completed.

Example 2

This embodiment is similar to embodiment 1 except that eight projections 121 having a right-angled trapezoidal longitudinal section are provided at both ends of each side of the lower surface of the die plate 12, i.e., the plane B becomes the highest plane and the plane C becomes the lowest plane as shown in fig. 4, and the punching force can be reduced.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A thick material connecting clamp composite die capable of reducing blanking force comprises an upper die part and a lower die part, wherein the upper die part is positioned right above the lower die part, the upper die part comprises an upper die base (4), an upper base plate (6) and an upper die fixing plate (8) which are sequentially arranged from top to bottom, a plurality of guide pillar through holes are formed in the upper die fixing plate (8), and a first spring assembly is further arranged in the upper die part; the die comprises a lower die part and is characterized in that the lower die part comprises a stripper plate (13), a lower die fixing plate (16) and a lower die base (19), the stripper plate (13) is sequentially arranged from top to bottom, a plurality of guide pillars (15) matched with guide pillar through holes are arranged on the upper surface of the lower die fixing plate (16), a male die and a female die (14) are embedded in the stripper plate (13), and a second spring assembly is further arranged in the lower die part.

2. The composite die for reducing blanking force of the thick material connecting clamp according to claim 1, wherein the stripper assembly comprises an inner backing plate (9), a block (10) and an upper stripper plate (11), the block (10) is embedded in the upper stripper plate (11), and the upper stripper plate (11) is fixed below the inner backing plate (9).

3. A blanking force reducing composite die for a thick stock connecting clip according to claim 2, wherein the lower surface of the upper stripper plate (11) exceeds the lower surface of the cavity plate (12).

4. A thick stock joint card blanking force reducing compound die according to claim 1, characterized in that the punch structure (7) comprises a number of first punches (71) and second punches (72), the height difference of the first punches (71) and the second punches (72) being 4mm, the first punches (71) being located at the corners of the stripper assembly.

5. The composite die for reducing blanking force of the thick material connecting clamp according to claim 4, wherein the top of each of the first punch (71) and the second punch (72) is provided with a punch hanging table, and the punch hanging tables are connected with the upper die fixing plate (8); the thickness of the punch hanging table is 6-12 mm.

6. The composite die for reducing blanking force of the thick material connecting card according to claim 1, wherein a floating pin (17) and a third spring assembly penetrate through the stripper plate (13), the lower die fixing plate (16) and the lower die base (19) from top to bottom.

7. The composite die for reducing blanking force of the thick material connecting clamp according to claim 1, wherein a die handle (2) is arranged on the upper surface of the upper die base (4), and a striking rod (1) penetrates through the die handle (2) and the upper die part.

8. The composite die for reducing blanking force of thick material connecting card according to claim 1, wherein said stripper plate (13) is provided with a plurality of guide sleeve holes (25) matching with the guide posts (15), the guide posts (15) extend into said guide sleeve holes (25) to guide the direction of up-and-down movement of said upper die portion.

9. The composite die for reducing blanking force of thick material connecting card according to claim 1, characterized in that the first spring assembly penetrates the upper die base (4), the upper backing plate (6) and the upper die fixing plate (8); the second spring assembly penetrates through the lower die fixing plate (16) and the lower die base (19).