CN110000289B

CN110000289B - Composite die for reducing blanking force of thick material connecting clamp

Info

Publication number: CN110000289B
Application number: CN201910277267.8A
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: 2024-09-03
Anticipated expiration: 2039-04-08
Also published as: CN110000289A

Abstract

The invention relates to the technical field of stamping processing, and particularly provides a composite die for reducing blanking force of a thick material connecting card, which comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die seat, an upper base plate and an upper die fixing plate which are sequentially arranged from top to bottom, and a first spring component is arranged in the upper die part; the lower die part comprises a stripper plate, a lower die fixing plate and a lower die holder which are sequentially arranged from top to bottom, wherein a male die and a female die are embedded in the stripper plate, and a second spring assembly is arranged in the lower die part; the lower surface of the upper die fixing plate is provided with a concave template, the lower surface of the concave template is provided with a plurality of protruding parts, a material returning assembly is arranged in the concave template, and the upper die fixing plate and the material returning assembly penetrate through a punch. The invention can reduce blanking force, reduce noise decibel generated by stamping operation and prolong the service life of the die; can reduce the cost of labor and materials, improve the production efficiency of products, and can rapidly discharge the products at one time.

Description

Composite die for reducing blanking force of thick material connecting clamp

Technical Field

The invention relates to the technical field of stamping processing, and particularly provides a composite die for reducing blanking force of a thick material connecting card.

Background

The hardware fitting style that circulates in market is various, and the structure is various. The siphon roof rainwater drainage suspension system accessory connecting clamp is matched with a common pipe clamp for use, and the demand is large. The existing die for the workpieces generally uses a large punch, so that the cost of manual water and electricity is relatively high, the noise is high, and the loss of a machine tool is high; in the punching process, the punch is easy to be broken or broken; the blanking female die is worn quickly, and the produced plate workpiece is uneven and easy to generate large burrs; the typing process and blanking and punching are not together, two sets of stamping dies are needed for production, and the production efficiency is low.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a composite die with a thick material connecting clamp for reducing blanking force, which can reduce the blanking force, reduce noise decibel generated by stamping operation and prolong the service life of the die; can reduce the cost of labor and materials, improve the production efficiency of products, and can rapidly discharge the products at one time.

In order to solve the technical problems, the invention adopts the following technical scheme:

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 seat, an upper base plate and an upper die fixing plate which are sequentially arranged from top to bottom, a plurality of guide post through holes are formed in the upper die fixing plate, and a first spring assembly is further arranged in the upper die part; the lower die part comprises a stripper plate, a lower die fixing plate and a lower die holder which are sequentially arranged from top to bottom, the upper surface of the lower die fixing plate is provided with a plurality of guide posts matched with guide post through holes, 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 female die plate, the lower surface of the female die plate is provided with a plurality of protruding parts, a material returning assembly is arranged in the female die plate, the female die plate is provided with a plurality of guide sleeve holes matched with the guide posts, and the upper die fixing plate and the material returning assembly penetrate through a punch.

The invention relates to a composite die for reducing blanking force of a thick material connecting clamp, which is provided with an upper die part and a lower die part, wherein the upper die part and the lower die part work in a matched manner by the mutual guide 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 blanking force and noise decibel generated by stamping operation; the arrangement of the material returning assembly enables the typewriting process and blanking and punching to be carried out simultaneously, so that the production efficiency can be improved; the punch is used for punching and finishing the perforating 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, wherein 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 material returning plate exceeds the lower surface of the concave template.

In order to be able to reduce the blanking force, the punch comprises a number of first and second punches, the heights of which differ by 4mm, the first punch being located at a corner of the blanking assembly.

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

In order to position the plate material placed on the stripper plate, the stripper plate and the lower die holder of the lower die fixing plate are penetrated with a lifting pin and a third spring assembly from top to bottom.

In order to facilitate the connection card to be punched out from the female die plate, the upper surface of the upper die base is provided with a die shank, and the die shank and the upper die part are penetrated with a punching rod.

In order to guide the direction of the up-and-down movement of the upper die part, a plurality of guide sleeve holes matched with the guide posts are formed in 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 component penetrates through the upper die seat, the upper base plate and the upper die fixing plate; the second spring component penetrates through the lower die fixing plate and the lower die base.

Compared with the prior art, the invention has the beneficial effects that:

(1) The arrangement of the protruding portion on the lower surface of the die plate can reduce blanking force, reduce noise decibels generated by stamping operation and prolong the service life of the die.

(2) The setting of interior backing plate, word piece and last flitch of returning makes typewriting process and blanking punch a hole go on simultaneously, can improve production efficiency, has increased the flattening effect of sheet material finished piece.

(3) The arrangement of the height difference between the first punch and the second punch can reduce blanking force; the thickness of the punch hanging table is set to improve the tensile stress of the punch and prevent the punch from being broken.

(4) The first spring assembly and the beating rod are combined to jointly discharge, so that the upper material returning plate can be balanced, and the breakage of the punch head caused by unilateral pushing force can be prevented.

Drawings

Fig. 1 is a schematic structural diagram of a composite die for reducing blanking force of a thick material connecting card.

FIG. 2 is a schematic diagram of the combination of the present invention.

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

Fig. 4 is a schematic structural view of the female mold plate.

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

The graphic indicia are illustrated as follows:

the die comprises the following components of a 1-rod, a 2-die shank, a 3-first screw plug, a 4-upper die holder, a 5-first spring, a 6-upper base plate, a 7-punch structure, a 71-first punch, a 72-second punch, an 8-upper die fixing plate, a 9-inner base plate, a 10-character code block, an 11-upper stripper plate, a 12-female die plate, a 121-protruding part, a 13-stripper plate, a 14-male die, a 15-guide pillar, a 16-lower die fixing plate, a 17-lifting pin, a 18-second spring, a 19-lower die holder, a 20-second screw plug, a 21-third spring, a 22-third screw plug, a 23-plate, a 24-connecting clip and a 25-guide sleeve hole.

Detailed Description

The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated 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 numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

As shown in fig. 1 to 5, a first embodiment of a composite die for reducing blanking force of a thick material connecting card of the present invention 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 holder 4, an upper backing plate 6 and an upper die fixing plate 8 sequentially arranged from top to bottom, a plurality of guide post through holes are provided on the upper die fixing plate 8, and a first spring assembly is further provided in the upper die portion; 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 guide post through holes, the stripper plate 13 is internally embedded with a male die 14, and the lower die part is internally also provided with a second spring component; the lower surface of the upper die fixing plate 8 is provided with a die plate 12, the lower surface of the die plate 12 is provided with a plurality of protruding parts 121, a material returning assembly is arranged in the die plate 12, the die plate is provided with a plurality of guide sleeve holes 25 matched with the guide posts 15, and the upper die fixing plate 8 and the material returning assembly penetrate through a punch 7.

The upper die part and the lower die part are mutually guided and corrected through a guide pillar, a guide pillar via hole and a guide sleeve hole and are assisted by a spring assembly, and the upper die part and the lower die part work in a matching way; the arrangement of the convex part on the lower surface of the concave template can reduce blanking force and noise decibel generated by stamping operation; the arrangement of the material returning assembly enables the typewriting process and blanking and punching to be carried out simultaneously, so that the production efficiency can be improved; the punch is used for punching and finishing the perforating operation. As shown in fig. 4, the lower surface of the female die plate 12 is configured to be upward, the longitudinal section of the protruding portion 121 is isosceles trapezoid, four protruding portions are disposed at the middle positions of each side of the lower surface of the female die plate 12, 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 continuous height appears at the square cutting edge. The drop between the B surface and the C surface is 4.5mm. In the punching process, the high-point lines of the C surface and the A surface play a shearing role, and after the plate 23 is torn, the low-point lines of the A surface and the B surface start to play a shearing role, so that the punching force can be reduced by the design.

In addition, the material returning assembly comprises an inner backing plate 9, a character block 10 and an upper material returning plate 11, wherein the character 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 code block 10 and the upper material returning plate 11 enables punching and character stamping on the plate material to be performed simultaneously. As shown in fig. 2, the upper surface of the inner pad 9 is fixedly connected with the upper die fixing plate 8 in this embodiment.

Wherein the lower surface of the upper stripper plate 11 extends beyond the lower surface of the female die plate 12. The lower surface of the upper material returning plate 11 is arranged beyond the lower surface, so that the workpiece can be safely and conveniently pushed out. As shown in fig. 3, the lower surface of the upper stripper plate 11 exceeds the lower surface of the die plate 12 by 2-3 mm in this embodiment, so that the phenomena of unsmooth unloading and die damage can be prevented.

In addition, the punch 7 comprises a number of first punches 71 and second punches 72, the heights of the first punches 71 and the second punches 72 being different by 4mm, the first punches 71 being located at the corners of the reject assembly. The provision of the height difference between the first punch 71 and the second punch 72 can reduce the blanking force. As shown in fig. 1 and 3, through holes matched with the first punch 71 and the second punch 72 are formed in the inner backing plate 9 and the upper stripper plate 11 in the embodiment; the upper material returning plate 11 is in sliding fit with the die plate 12, the first punch 71 and the second punch 72 in a small clearance, the bilateral clearance is between 0.06 mm and 0.08mm, and the punches 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 corner positions of the inner pad 9 and the upper stripper plate 11, respectively.

Wherein, the top 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 between 6 and 12 mm. The punch hanging table can prevent the punch from being easily broken. As shown in fig. 3, in this embodiment, the thickness of the punch hanging table is set to 12mm, and this thickness setting can increase the hanging force, reduce the replacement of the punch, and improve the service life of the die.

In addition, a lifting pin 17 and a third spring assembly are penetrated from top to bottom among the stripper plate 13, the lower die fixing plate 16 and the lower die holder 19. The provision of the lift pins 17 and the third spring assembly enables positioning of the slabs 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 plug 22, one end of the third spring 21 abuts against the lift pin 17, and the other end is locked by the third plug 22 penetrating from the lower surface of the lower die holder 19.

In addition, the upper surface of the upper die holder 4 is provided with a die shank 2, and the die shank 2 and the upper die part penetrate through a driving rod 1. The arrangement of the striking rod 1 and the die shank 2 can facilitate the striking of the connection card from the cavity plate 12. As shown in fig. 1 to 3, in this embodiment, the punch stem 1 penetrates through the die shank 2, the upper die holder 4, the upper backing plate 6 and the upper die fixing plate 8, and the bottom of the punch stem 1 acts on the inner backing plate 9.

In addition, the stripper plate 13 is provided with a plurality of guide sleeve holes 25 matched with the guide posts 15, the guide posts 15 extend into the guide sleeve holes 25, and the guide sleeve holes 25 can guide the upward and downward movement direction of the upper die part.

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

The working principle of the invention is as follows: as shown in fig. 1 to 5, the opened slab 23 is placed with its stub bar on the stripper plate 13 and positioned by the lift pins 17. The upper die part moves downwards, the upper flitch 11 contacts the plate material 23, and the first spring 5 begins to compress; the upper material returning plate 11 is returned into the female die plate 12, the female die plate 12 presses the floating pins 17 to be flush with the plate material 23, and then the female die plate 12 starts to contact the plate material 23, so that the plate material 23 and the material discharging plate 13 synchronously press down, and the second springs 18 are compressed; the upper die part continuously descends, the male die 14 starts to contact the plate 23, a shear port is formed between the male die 14 and the female die plate 12, the plate 23 is torn, the punched connecting card 24 is pressed into the female die plate 12, the connecting card 24 is punched by the first punch 71 and the second punch 72, and the punching is completed; the upper die part is continuously pressed downwards to the die dead point, the top surface of the inner base plate 9 contacts with the bottom surface of the upper die fixing plate 8, the character code block 10 is finished in marking, and the upper material returning plate 11 flattens the connecting card 24. Then, the upper die part moves upwards, the second spring 18 resets, the female die plate 12, the plate material 23, the stripper plate 13 and the floating pin 17 synchronously move upwards until the stripper plate 13 stops at the highest point, the female die plate 12 leaves the plate material 23, and then the floating pin 17 goes up to the highest point, and the lower die unloading is completed; the upper die part continuously moves upwards, the first spring 5 resets, the upper material returning plate 11 in the female die plate 12 starts to be pressed down, when the upper die part moves upwards to the highest point of the punching machine, the striking rod 1 is struck by the cross rod of the punching machine, the connecting card 24 is acted on the inner backing plate 9, the female die plate 12 is struck, and the upper die unloading is completed.

Example 2

This embodiment is similar to embodiment 1, except that in this embodiment, the vertical section of the protruding portion 121 is a right trapezoid, eight protruding portions are provided, and the protruding portions are located at both ends of each side of the lower surface of the die plate 12, that is, the surface B becomes the highest surface and the surface C becomes the lowest surface as shown in fig. 4, and the punching force can be reduced.

It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. The composite die for reducing blanking force of the thick material connecting clamp 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 seat (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 post 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 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, wherein a plurality of guide posts (15) matched with guide post through holes are arranged on the upper surface of the lower die fixing plate (16), a convex-concave die (14) is embedded in the stripper plate (13), and a second spring assembly is further arranged in the lower die part; a material returning assembly is arranged in the female die plate (12), a plurality of guide sleeve holes (25) matched with the guide posts (15) are formed in the female die plate, and the upper die fixing plate (8) and the material returning assembly penetrate through a punch structure (7);

The material returning assembly comprises an inner base 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 base plate (9); the lower surface of the upper material returning plate (11) exceeds the lower surface of the concave template (12);

The punch structure (7) comprises a plurality of first punches (71) and second punches (72), the heights of the first punches (71) and the second punches (72) differ by 4mm, and the first punches (71) are positioned at the corner of the material returning assembly; the tops 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 between 6 and 12 mm; a lifting pin (17) and a third spring assembly penetrate through the stripper plate (13), the lower die fixing plate (16) and the lower die holder (19) from top to bottom; the stripper plate (13) is provided with a plurality of guide sleeve holes (25) matched with the guide posts (15), and the guide posts (15) extend into the guide sleeve holes (25) so as to guide the upper die part to move up and down.

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

3. The composite die for reducing blanking force of the thick material connecting card according to claim 1, wherein the first spring component penetrates through the upper die base (4), the upper base plate (6) and the upper die fixing plate (8); the second spring component penetrates through the lower die fixing plate (16) and the lower die holder (19).