CN201768802U - Novel stripping structure of stamping die - Google Patents

Abstract

The utility model provides a novel stamping die stripping structure, aiming at providing a novel stamping die stripping structure capable of avoiding iron filings in the stamping process. The utility model is composed of an upper mold base, an upper die, a lower mold base, a lower punch, and a waste cutter block of the lower die, wherein the upper die is composed of a movable die cutter block and a fixed die cutter block, and the movable die cutter block The flexible connection between the flexible pneumatic device and the upper die base, the guiding mechanism is set between the movable die block and the upper die base along the stamping direction, and the fixed die die block is provided with the fixed die waste material matched with the waste die block of the lower die. Cutting edge, the cutting edge of the movable die cutter block is flush with the cutting edge of the fixed die cutter block. The utility model has the characteristics of high working efficiency and good working stability, and is suitable for relatively large stamping dies and stamping assembly lines.

Description

A new type of stripping structure for stamping dies

technical field

The utility model relates to a die, in particular to a stamping die. the

Background technique

The degree of automation of modern stamping dies is getting higher and higher. At present, many manufacturers have adopted multi-station dies and automated stamping production lines to process sheet metal workpieces. Apart from factors such as the performance of press equipment and process arrangement, the structure of stamping dies Rationality is an important factor related to the quality of stamping products, the stability of the stamping process, and the continuity of automated production. The stamping dies of some larger plate workpieces in the prior art are as shown in Figure 3. Among the figures: the die waste cutter block 13 and the fixed die cutter block 8 form the upper die 5, and the upper die 5 and the upper die base 1 fixed connection; the fixed die block 8 is provided with a gap 14 at the corresponding part of the lower die waste block 11; the lower punch 10, the lower die waste block 11 are fixedly connected with the lower die seat 12; the upper die 5 and the lower die The punch 10 cooperates to punch out the workpiece 9, and the waste cutting edge 15 provided on the die waste knife block 13 cooperates with the lower die waste knife block 11 to cut off the surrounding frame waste and make the surrounding frame waste fall off naturally; prior art The disadvantage is that during the stamping process, iron filings are easily generated at the position of the waste knife block 11 of the lower die. The position corresponding to the waste knife block 11 must be provided with a knife gap 14, causing the workpiece at the knife gap 14 to be punched later than other parts during the stamping process. Due to the asynchronous punching, burrs will be generated, thereby generating a large amount of iron filings, and Part of the iron filings will be brought into the mold cavity with the movement of the upper mold, which will cause two adverse consequences: 1. The working surface of the mold is crushed, causing the mold to be scrapped; 2. The surface of the stamping part is extruded In order to avoid this phenomenon, the mold needs to be cleaned frequently during the stamping process, which affects the continuity of the automated production process, reduces production efficiency, and becomes a bottleneck restricting automated production. How to pass the stamping mold Structural changes to eliminate the generation of iron filings in the blanking process is an important technical issue in the manufacture of automated stamping dies. the

Some technical solutions have been proposed in the prior art to solve the problems caused by iron filings to the stamping process, such as the Chinese patent announcement number CN2213031Y, titled "A Stamping Die", and published on November 22, 1995 The technical solution is characterized in that the mold is equipped with a device for automatically cleaning the upper mold. Its shortcoming is that it does not solve the problem of iron filings, but only passively cleans the upper mold, and removes the iron that falls off the surface of the lower mold during the lifting process of the upper mold. Chips also cannot be cleaned, and the technical problem of iron filings is not fundamentally solved. the

Utility model content

The utility model adopts a new type of stamping die stripping structure, provides a stamping die with a movable concave die block, and solves the technical problem that the stamping die is prone to produce a large amount of iron filings at the waste knife block of the lower die. the

In order to solve the above technical problems, the utility model adopts the following technical scheme: a new type of stamping die stripping structure, including: upper die base, upper die, lower die base, lower punch, lower die waste knife block, The upper die is composed of a movable die block and a fixed die block. The movable die block is movably connected with the upper die base through a retractable air pressure device. The direction is provided with a guiding mechanism, the fixed die cutter block is provided with a fixed die waste cutting edge matched with the lower die waste cutter block, and the cutting edge of the movable die cutter block is flush with the cutting edge of the fixed die cutter block. the

The upper die of the utility model cooperates with the lower punch to punch the workpiece, and the fixed die waste cutting edge provided on the fixed die cutter block in the upper die cooperates with the lower die waste cutter block to cut off the surrounding frame Waste; Compared with the prior art, the utility model cancels the knife gap on the fixed die cutter block, and the cutting edge of the movable die cutter block is flush with the cutting edge of the fixed die cutter block, ensuring that the upper The cutting edge of the die cuts the material synchronously when punching the workpiece, which avoids the generation of burrs and iron chips during the punching process. the

The telescopic air pressure device of the utility model is a nitrogen cylinder, the base of the nitrogen cylinder is fixedly connected with the upper mold base, the piston of the nitrogen cylinder is fixedly connected with the movable die block, and the guiding mechanism between the movable die cutter block and the upper die base It consists of a guide post installed on the movable die block and a guide sleeve installed on the upper die base. The guide post is fixedly connected with the movable die die block, and the guide sleeve is fixedly connected with the upper die base. A stopper is arranged on the outside, and the stopper is fixedly connected with the upper mold base.

The telescopic air pressure device of the utility model adopts a nitrogen cylinder whose initial pressure is greater than the punching cutting force of the movable die cutter block, so as to ensure the cutting force of the movable die cutter block when punching workpieces; it is installed on the movable die cutter block The guide column and the guide sleeve installed on the upper die base form the guide mechanism, and the guide mechanism guides the movement of the movable die cutter block along the stamping direction; the stopper installed on the outside of the movable die cutter block The die cutter block acts as a limiter to improve the installation accuracy and motion stability of the movable die cutter block.

The structural change of the utility model solves the technical problem in the prior art that a large amount of iron filings are produced due to the asynchronous punching process of the workpiece, thereby greatly reducing the generation of iron filings in the stamping process and eliminating the impact of iron filings on the stamping process. Impact, improve the yield of stamping workpieces, prolong the service life of stamping dies, and play a positive role in improving work efficiency and reducing losses.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the assembling drawing of movable die cutter block of the present utility model;

Fig. 3 is a schematic structural diagram of the prior art.

In the figure: Upper Die Base 1 Block 2 Guide Mechanism 3 Nitrogen Cylinder 4 Upper Die 5 Movable Die Blade 6 Fixed Die Waste Cutting Edge 7 Fixed Die Blade 8 Workpiece 9 Lower Punch 10 Lower Die Waste Blade 11 Lower Die Base 12 Upper Die Waste Knife Block 13 Cutting Gap 14 Waste Cutting Edge 15 Guide Sleeve 16 Guide Column 17 Press Plate 18

Specific implementation method

Below in conjunction with accompanying drawing and specific implementation method, the utility model is described in further detail:

As shown in Figure 1: the upper die 5 is composed of a movable die block 6 and a fixed die block 8, the movable die block 6 is movably connected with the upper die base 1 through a nitrogen cylinder 4, and the fixed die block 8 It is fixedly connected with the upper die base 1; the lower punch 10, the waste knife block 11 of the lower die are fixedly connected with the lower die base 12; the upper die 5 cooperates with the lower punch 10 to punch the workpiece 9, and the upper die 5 The fixed die scrap cutting edge 7 provided on the fixed die cutter block 8 cooperates with the lower die scrap cutter block 11 to cut off the surrounding frame waste; The cutting edge is flush. the

As shown in Figure 2, the stopper 2 is bolted to the upper mold base 1, the guide sleeve 3 is fixedly connected to the upper mold base 1, the guide rod 4 is bolted to the movable die block 6, and the base of the nitrogen cylinder 4 is connected to the upper mold base. 1 fixed connection, the piston rod of the nitrogen cylinder 5 is fixedly connected with the movable knife block; by adjusting the connection between the piston rod of the nitrogen cylinder 4 and the movable die cutter block 6, the cutting edge of the movable die cutter block 6 is connected with the fixed die cutter The cutting edge of the block 8 is flush; adjust the position of the lower mold waste knife block 11 installed on the lower mold base 12, so that the waste cutting edge of the lower mold waste knife block 11 and the fixed die of the upper die fixed die knife block 8 The scrap cutting edge 7 corresponds; the initial pressure of the nitrogen cylinder 4 is selected to be greater than the required cutting force when the movable die cutter block 6 connected to it blanks the workpiece. the

The working principle and working process of the present utility model are: as shown in Figure 1, the press machine goes down, and the fixed die cutter block 8 and the movable die cutter block 6 installed on the upper die base 1 will go down simultaneously and simultaneously press the material 9 For blanking, when the press moves down until the movable die cutter block 6 touches the lower die waste cutter block 11, the movable die cutter block 6 will stop descending, and the movable die cutter block 6 will press the waste surrounding frame, and the fixed die The mold cutter block 8 will continue to descend, and the fixed die scrap cutting edge 7 on the fixed die cutter block 8 cooperates with the lower mold scrap cutter block 11 to cut off the surrounding frame waste for the second time, so that the surrounding frame waste comes off naturally. the

Claims (6)

1. novel diel material-removing structure, comprise: upper bolster, upper cavity die, die shoe, lower punch, counterdie waste material cutter piece, it is characterized by: described upper cavity die by movable matrix cutter piece and fixedly die cutter piece form, movable matrix cutter piece flexibly connects by scalable pneumatic shuttle and upper bolster, along pressing direction guiding mechanism is set between movable matrix cutter piece and the upper bolster, the fixing fixedly die waste material cutting edge that matches with counterdie waste material cutter piece of die cutter piece setting, the cutting edge of movable matrix cutter piece is concordant with the cutting edge of fixing die cutter piece.

2. a kind of novel diel material-removing structure according to claim 1, it is characterized in that: described scalable pneumatic shuttle is the nitrogen cylinder.

3. a kind of novel diel material-removing structure according to claim 2, it is characterized in that: the base of described nitrogen cylinder is fixedlyed connected with upper bolster, and the piston of nitrogen cylinder is fixedlyed connected with movable matrix cutter piece.

4. a kind of novel diel material-removing structure according to claim 1 is characterized in that: the guiding mechanism between described movable matrix cutter piece and the upper bolster is made up of the fairlead that is installed in the lead on the movable matrix cutter piece and be installed on the upper bolster.

5. a kind of novel diel material-removing structure according to claim 4 is characterized in that: described lead is fixedlyed connected with movable matrix cutter piece, and fairlead is fixedlyed connected with upper bolster.

6. a kind of novel diel material-removing structure according to claim 1, it is characterized in that: the arranged outside block of described movable matrix cutter piece, block is fixedlyed connected with upper bolster.

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