CN214719775U

CN214719775U - High-precision stamping forming die

Info

Publication number: CN214719775U
Application number: CN202121012379.XU
Authority: CN
Inventors: 郑证嘉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-16
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses a high-precision stamping forming die, which comprises an upper cushion block, an upper die base, an upper cushion plate, an upper clamping plate, a stop plate, a stripping plate, a lower template, a lower clamping plate, which are arranged in sequence from top to bottom. The lower pad, the lower die base and the lower pad, the lower side of the upper pad is provided with a groove, a spring group is arranged in the groove, and a spring fixing plate is arranged below the upper pad. An upper punch is fixed below, and a top rod is passed through it, a lower punch is fixed on the lower template, and a top member is passed through it, and the pressing surface of the stripping plate and the lower template are provided with V-shaped material blocking ribs are respectively arranged along the edges of the upper punch and the lower punch. The beneficial effects of the utility model are: the material is fully compressed, the material flows evenly during cutting, the material in the punching area is in a state of three-way compressive stress, the plasticity of the product is improved, the mold works smoothly, the efficiency is high, and the service life is long. Product punching precision is high, product quality is stable, and product production tolerance is small.

Description

High-precision stamping forming die

Technical Field

The utility model relates to a stamping die technical field specifically is a high accuracy stamping forming mould.

Background

The stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping processing, and is called a cold stamping die (commonly called a cold stamping die). Stamping is a press working method in which a material is pressed at room temperature by a die mounted on a press to be separated or plastically deformed, thereby obtaining a desired part. However, for product stamping with strict requirements on end face circular run-out, particularly gear stamping, a common punching and blanking compound die cannot simultaneously meet the requirements on flatness, circular run-out and end face bright belts, the tooth part of the gear after being blanked needs to be milled and polished, the number of processing steps is large, the processing time is long, and the efficiency is low. Meanwhile, materials in a blanking area are easily torn in the blanking process, the material flow is uneven, the plasticity of a blanked product is reduced, and the quality of the product is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high accuracy stamping forming mould to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high accuracy stamping forming mould, includes from the top down last cushion, upper die base, upper padding plate, punch holder, backstop board that set gradually, takes off flitch, lower bolster, lower plate, lower bolster, die holder and lower bolster, the downside of going up the cushion is seted up flutedly, be equipped with spring group in the recess, its below is equipped with the spring fixed plate, the below of upper padding plate is fixed with the punch, wears to be equipped with the ejector pin in it, be fixed with the lower punch on the lower bolster, wear to be equipped with the ejector pin ware in it, the pressfitting face of taking off flitch and lower bolster all is equipped with the V-arrangement and hinders the material muscle, its edge setting along punch and lower punch respectively.

Further preferably, the spring group is a plurality of nitrogen spring groups which are symmetrically arranged, and the upper cushion block is provided with a plurality of spring positioning grooves corresponding to the spring group.

Preferably, the stripper plate and the lower template are respectively provided with a plurality of product grooves along the material conveying direction, and the product grooves are respectively arranged on two sides of the V-shaped material blocking rib.

Further preferably, the stripper plate is provided with two positioning grooves which are symmetrically arranged and located in the material discharging direction, the lower template is provided with positioning blocks matched with the positioning grooves, and the positioning grooves and the positioning blocks are both arranged in the product groove and arranged along the inner edge of the product groove.

Preferably, a plurality of material guide pins which are symmetrically arranged are arranged on the lower template along the material conveying direction.

Preferably, the four side surfaces of the upper cushion block and the upper die holder, and the four side surfaces of the lower die holder and the lower cushion block are provided with corresponding clamping grooves, and are connected with locking bolts fixed in the clamping grooves.

Preferably, a guide pillar and a guide sleeve are connected between the upper die holder and the lower die holder, the upper die holder and the lower die holder are respectively provided with limiting columns which are matched with each other, and eight limiting columns are arranged at two ends of the stop plate along the material conveying direction.

Further preferably, the upper end of ejector pin is connected with the nitrogen spring that is fixed in on the spring fixed plate, the ejector tool adopts the oil pressure jacking.

Has the advantages that: the utility model discloses a high accuracy stamping forming mould hinders compressing tightly of material muscle realization material through the V-arrangement to cooperation top ware guarantees that the material is fully compressed tightly, and the material that flows when cutting is even, and the material in blanking district is in three-dimensional compressive stress state, has improved the plasticity of fashioned product, and spring group guarantees that the work of mould is steady simultaneously, and is efficient, long service life, and product blanking precision is high, and the product stable quality, and product dimensional tolerance is little.

Drawings

Fig. 1 is an exploded schematic view of a high-precision stamping forming die disclosed in an embodiment of the present invention;

fig. 2 is a schematic view of an axial measurement structure of a high-precision punch forming die disclosed in an embodiment of the present invention;

fig. 3 is a schematic structural view of a high-precision stamping forming die disclosed in an embodiment of the present invention;

fig. 4 is a schematic structural view of a stripper plate disclosed in the embodiment of the present invention;

fig. 5 is a schematic structural view of the lower template disclosed in the embodiment of the present invention.

Reference numerals: 1-upper cushion block, 2-upper die holder, 3-upper backing plate, 4-upper clamping plate, 5-stop plate, 6-stripper plate, 7-lower die plate, 8-lower clamping plate, 9-lower backing plate, 10-lower die holder, 11-lower cushion block, 12-groove, 13-spring group, 14-spring fixing plate, 15-spring positioning groove, 16-clamping groove, 17-locking bolt, 18-limiting column, 19-upper punch head, 20-ejector rod, 21-lower punch head, 22-ejector piece device, 23-V-shaped material blocking rib, 24-product type groove, 25-positioning groove, 26-positioning block and 27-material guiding pin.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-5, a high accuracy stamping forming die, includes from the top down upper cushion 1, upper die base 2, upper padding plate 3, punch holder 4, backstop board 5, stripper plate 6, lower bolster 7, lower plate 8, lower bolster 9, die holder 10 and lower cushion 11 that set gradually, the downside of upper cushion 1 is seted up flutedly 12, be equipped with spring group 13 in the recess 12, its below is equipped with spring fixed plate 14, the below of upper bolster 3 is fixed with upper punch 19, wears to be equipped with ejector pin 20 in it, be fixed with lower punch 21 on the lower bolster 7, wear to be equipped with ejector 22 in it, the pressfitting face of stripper plate 6 and lower bolster 7 all is equipped with V-shaped material blocking rib 23, and it sets up along the edge of upper punch 19 and lower punch 21 respectively.

In this application, stamping forming mould is the essence mould of dashing, and three kinds of forces act on the mould when its essence is dashed, promptly towards cutting force, ring gear power and anti-jacking force. Before blanking begins, materials are pressed into the stripper plate 6 and the V-shaped gear ring of the V-shaped material blocking rib 23 on the laminating surface of the lower template 7, the materials are pressed on the lower punch 21 in the lower template 7, gear ring force generated on the inner surface of the V-shaped gear ring of the V-shaped material blocking rib 23 is lateral pressure, the materials can be prevented from being torn in a blanking area and moving laterally outside the blanking area, and flowing uniformity is guaranteed. At the same time, the counter-pressure generated by the stripper 22 presses the material against the upper punch 19 in the blanking line. When the material is in a pressing state under the dual actions of the gear ring force and the anti-jacking force, the upper punch 19 generates a downward punching force on the material to punch the material into a set shape, so that the punching precision is high, and the punching quality is stable. The material of the blanking area is in a three-dimensional pressure stress state, so that the plasticity of a formed product is improved. After blanking is finished, the gear ring force and the anti-ejection force are released, the punch forming die is opened, the ejector rod 20 can eject waste materials in the upper punch 19 downwards along with the rising of the stripper plate 6, the ejector 22 ejects products in the lower punch 21 upwards, and the products and the waste materials are blown out of the die under the action of compressed air.

In the application, the stamping forming die adopts a fine stamping composite die structure, and the oil press is used for driving to replace a traditional fine stamping machine, so that the structure of the stamping forming die is simplified; meanwhile, the spring group 13 consisting of a plurality of nitrogen springs is used for replacing the blank holder force on the fine blanking machine, the ejecting device 22 is used for replacing the anti-ejecting force of the fine blanking machine, the materials are fully compressed, the flowing materials are uniform, the die structure is simplified, and the size is miniaturized.

Preferably, spring group 13 is a plurality of nitrogen gas springs that are the symmetry and arrange, go up and be equipped with a plurality of spring positioning groove 15 that correspond spring group 13 on the cushion 1, in this application, the nitrogen gas spring in the spring group 13 has 12, is the rectangular array of three rows four rows and arranges, the nitrogen gas spring has characteristics such as small, elasticity is big, the journey is long, the steady, long service life, the elasticity curve of work is steady and do not need the pretension, can prolong the life of mould, ensures product quality's stability.

Preferably, a plurality of product grooves 24 are formed in the stripper plate 6 and the lower die plate 7 along the material conveying direction and are respectively formed in two sides of the V-shaped material blocking rib 22, so that the situation that after blanking, blanking lines of the material have burrs to affect the pressing of the stripper plate 6 and the lower die base 7 and the blanking quality of subsequent products is affected is prevented.

Preferably, the stripper plate 6 is provided with two positioning grooves 25 which are symmetrically arranged and located in the material discharging direction, the lower die plate 7 is provided with a positioning block 26 which is matched with the positioning grooves 25, the positioning grooves 25 and the positioning block 26 are both arranged in the product-shaped groove 24 and are arranged along the inner edge of the product-shaped groove, the positioning block 26 is inserted into the positioning grooves 25 when the stripper plate 6 and the lower die plate 7 are pressed and inserted into a material blanking line after blanking, so that the positioning of materials is realized, the materials are prevented from moving, and the blanking quality is improved.

Preferably, a plurality of material guide pins 27 which are symmetrically arranged are arranged on the lower template 7 along the material conveying direction, so that the material is accurately conveyed.

Preferably, the four side surfaces of the upper die block 1 and the upper die block 2, and the four side surfaces of the lower die block 10 and the lower die block 11 are respectively provided with a corresponding clamping groove 16, and are respectively connected with a locking bolt 17 fixed in the clamping grooves 16, the clamping grooves 16 are designed in a T-shaped or inverted T-shaped structure, so that the locking bolts 17 can be fixed and locked conveniently, the locking bolts 17 are used for fixing the upper die block 2 and the upper die block 1, and the lower die block 10 and the lower die block 11 together, so that the die assembly is convenient.

Preferably, a guide post and a guide sleeve are connected between the upper die holder 2 and the lower die holder 10, the upper die holder 2 and the lower die holder 10 are respectively provided with a limiting column 18 which is matched with each other, and eight limiting columns 18 are arranged at two ends of the stop plate 5 along the material conveying direction and used for limiting the descending of the upper punch 19 during die assembly, so that the protection effect is achieved.

Preferably, the upper end of the ejector rod 20 is connected with a nitrogen spring fixed on the spring fixing plate 14, so that an elastic buffering effect is achieved, the ejector rod 20 is protected, and the service life of the ejector rod 20 is prolonged; the jacking device 22 adopts oil pressure jacking, has higher bearing capacity, has the advantages of fatigue resistance, impact resistance and long service life, can provide stable anti-jacking force, ensures the fixation stability of materials, ensures the flatness of products, ensures the stability of the blanking quality of the products, and improves the blanking quality.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. A high-precision stamping die, comprising an upper cushion block (1), an upper die base (2), an upper cushion plate (3), an upper clamping plate (4), and a stop plate (5) sequentially arranged from top to bottom ), a stripping plate (6), a lower template (7), a lower splint (8), a lower pad (9), a lower die base (10) and a lower pad (11), characterized in that: the upper pad The lower side of the block (1) is provided with a groove (12), a spring group (13) is arranged in the groove (12), a spring fixing plate (14) is arranged below the groove (12), and the upper backing plate (3) ), an upper punch (19) is fixed under it, and an ejector rod (20) is pierced in it, and a lower punch (21) is fixed on the lower template (7), and an ejector (22) is pierced through it. ), the pressing surfaces of the stripper plate (6) and the lower template (7) are provided with V-shaped material resisting ribs (23), which are respectively along the upper punch (19) and the lower punch (21). Edge settings.

2 . The high-precision stamping die according to claim 1 , wherein the spring group ( 13 ) is a plurality of nitrogen gas spring groups arranged symmetrically, and the upper spacer ( 1 ) is on the upper A plurality of spring positioning grooves (15) corresponding to the spring groups (13) are provided.

3. A high-precision stamping die according to claim 1, characterized in that: the stripper plate (6) and the lower template (7) are provided with a plurality of product grooves ( 24), which are arranged on both sides of the V-shaped material blocking rib (23).

4. A high-precision stamping die according to claim 3, characterized in that: the stripper plate (6) is provided with two symmetrically arranged positioning grooves (25), which are located in the material discharging direction , the lower template (7) is provided with a positioning block (26) matched with the positioning groove (25), the positioning groove (25) and the positioning block (26) are both arranged in the product groove (24), and along its inner edge.

5 . The high-precision stamping die according to claim 1 , wherein the lower template ( 7 ) is provided with a plurality of symmetrically arranged material guide pins ( 27 ) along the material conveying direction. 6 .

6. A high-precision stamping die according to claim 1, characterized in that: the upper cushion block (1) and the upper die base (2), the lower die base (10) and the lower cushion block (11) Corresponding card slots (16) are provided on the four sides of the bracket, and locking bolts (17) fixed in the card slots (16) are connected with each other.

7 . The high-precision stamping die according to claim 1 , wherein a guide post and guide sleeve are connected between the upper die base ( 2 ) and the lower die base ( 10 ), and the upper die base (2) and the lower die base (10) are provided with mutually cooperating limit posts (18), and eight said limit posts (18) are arranged at both ends of the stop plate (5) along the material conveying direction .

8. A high-precision stamping die according to claim 1, characterized in that: the upper end of the ejector rod (20) is connected with a nitrogen gas spring fixed on the spring fixing plate (14), and the ejector (22) Use hydraulic jacking.