CN215315102U

CN215315102U - Structure for preventing waste material from returning in progressive die

Info

Publication number: CN215315102U
Application number: CN202120847892.4U
Authority: CN
Inventors: 沈晓治; 赵永辉
Original assignee: Tianjin Jinrong Tianyu Precision Machinery Inc
Current assignee: Tianjin Jinrong Tianyu Precision Machinery Inc
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-28
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a structure for preventing waste return in a progressive die, which comprises an upper die part and a lower die part, wherein a thinning punch and a punching punch are arranged on the upper die part, the thinning punch is used for thinning and expanding edge waste parts of a plate, and the punching punch is arranged at a rear-stage station of the thinning punch and is used for blanking the expanded waste parts in the next process step and punching the waste parts into corresponding female dies on the lower die part. During operation, firstly, the edge waste part of the plate is thinned and bulged by the aid of the thinning punch to form a thin sheet with an increased area, then the bulged waste part is blanked by the aid of the punching punch in the next step and is punched into the female die, and the punched waste can be squeezed by the bulge on the inner wall of the female die, so that the waste is prevented from returning.

Description

Structure for preventing waste material from returning in progressive die

Technical Field

The utility model belongs to the technical field of dies, and particularly relates to a structure for preventing waste return in a progressive die.

Background

In the processing and production process of the progressive die, copper materials are made of copper plates, and the cost is high, so that the material width step distance can be reduced as much as possible in actual production, the cost of the product is reduced, but the waste materials punched on the copper plates are small due to the too small material width step distance, and the waste material return prevention structure is difficult to be made on a small punch.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a structure for preventing waste return in a progressive die.

The utility model is realized by the following technical scheme:

a structure for preventing waste material from returning in a progressive die comprises an upper die part and a lower die part,

and the upper die part is provided with a thinning punch and a punching punch, the thinning punch is used for thinning and bulging the edge waste part of the plate, and the punching punch is arranged at the rear-stage station of the thinning punch and is used for blanking the bulged waste part in the next step and punching the bulged waste part into a corresponding female die on the lower die part.

In the technical scheme, the upper die part comprises an upper die base, an upper base plate, an upper clamping plate, a back stripping plate and an upper stripping plate, wherein the upper die base, the upper base plate, the upper clamping plate, the back stripping plate and the upper stripping plate are sequentially stacked from top to bottom.

In the technical scheme, the lower die part comprises a lower die plate, a lower backing plate and a lower die base, and the lower die plate, the lower backing plate and the lower die base are sequentially stacked from top to bottom.

In the technical scheme, the inner wall of the inner cavity of the female die is provided with a bulge for extruding the punched waste, and the bottom of the punching punch is provided with a yielding empty groove for avoiding the bulge.

In the above technical solution, the bottom surface of the ironing punch is lower than the bottom surface of the punching punch.

In the technical scheme, the thinning punch is vertically embedded in the upper clamping plate, the back stripping plate and the upper stripping plate of the upper die part.

In the technical scheme, the punching punch is vertically embedded in an upper clamping plate, a back stripping plate and an upper stripping plate of the upper die part.

In the technical scheme, the female die is vertically embedded in the lower die plate of the lower die part.

The utility model has the advantages and beneficial effects that:

during operation, firstly, the edge waste part of the plate is thinned and bulged by the aid of the thinning punch to form a thin sheet with an increased area, then the bulged waste part is blanked by the aid of the punching punch in the next step and is punched into the female die, and the punched waste can be squeezed by the bulge on the inner wall of the female die, so that the waste is prevented from returning.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of fig. 1.

Fig. 3 is a schematic view of a progressive process for sheet material.

Fig. 4 is a schematic structural view of a piercing punch according to a second embodiment of the present invention.

Fig. 5 is a bottom view of a pierce punch according to a second embodiment of the present invention.

Fig. 6 is a schematic top view of the female mold according to the second embodiment of the present invention.

Fig. 7 is a diagram showing a state where the edge scrap portion of the plate material is thinned in the second embodiment of the present invention.

FIG. 8 is a view showing a state where the thinned scrap portion is punched and dropped into a die in the second embodiment of the present invention.

Wherein:

1.1: upper die holder, 1.2: upper mat, 1.3: upper splint, 1.4: back stripper, 1.5: upper stripping plate, 2.1: lower die plate, 2.2: lower bolster, 2.3: lower die holder, 3: punch, 3.1: yield empty groove, 4: thinning punch, 5: female die, 5.1: lumen, 5.2: and (4) protruding.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.

Example one

A structure for preventing waste return in a progressive die includes an upper die portion and a lower die portion.

The upper die part comprises an upper die base 1.1, an upper base plate 1.2, an upper clamping plate 1.3, a back stripping plate 1.4 and an upper stripping plate 1.5, wherein the upper die base, the upper base plate, the upper clamping plate, the back stripping plate and the upper stripping plate are sequentially overlapped from top to bottom.

The lower die part comprises a lower die plate 2.1, a lower cushion plate 2.2 and a lower die base 2.3, wherein the lower die plate, the lower cushion plate and the lower die base are sequentially overlapped from top to bottom.

Mounted on the upper die portion are a ironing punch 4 and a piercing punch 3, the ironing punch 4 being adapted to ironing and pressing the edge waste portion of the sheet material (see reference number m in fig. 2 and 3), and the piercing punch 3 being arranged at a subsequent station of the ironing punch and being adapted to blanking the ironed waste portion in a subsequent step (see reference number n in fig. 2 and 3) and punching it down into a corresponding die 5 on the lower die portion.

Further, the bottom surface of the ironing punch 4 is lower than the bottom surface of the piercing punch 3, and when the upper and lower die portions are closed, the bottom surface of the ironing punch 4 has a certain clearance (i.e., an ironing thickness) from the top surface of the lower die portion, and the bottom surface of the piercing punch 3 enters the die 5.

Because the thinning punch performs thinning and bulging on the edge waste part of the plate in advance, the area of the plate is increased, and the anti-return waste structure can be designed on the punching punch 3 and the female die 5 aiming at the material with the increased area.

Example two

On the basis of the first embodiment, referring to fig. 4 to 8, the present embodiment specifically describes the waste return prevention structure provided on the punching punch 3 and the die 5, specifically:

the inner wall of the inner cavity 5.1 of the female die 5 is provided with a bulge 5.2 for extruding the punched waste, and the bottom of the punching punch 3 is provided with a yielding empty groove 3.1 for avoiding the bulge 5.2. When the punching die works, firstly, the edge waste part of the plate 8 is thinned and pressed to expand to form a thin sheet c with an increased area by using the thinning punch 4 (see the attached drawing 7), then, the punched and expanded waste part is punched by using the punching punch 3 in the next step and is punched and dropped into the female die 5, and the punched and dropped waste is squeezed by the bulge 5.2 on the inner wall of the female die 5 (see the attached drawing 8), so that the waste is prevented from returning.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The utility model has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the utility model fall within the scope of the utility model.

Claims

1. The utility model provides a structure of waste material is prevented returning in mould upgrades which characterized in that: comprises an upper die part and a lower die part;

2. The structure of preventing scrap return in a progressive die as set forth in claim 1, wherein: the upper die part comprises an upper die base, an upper base plate, an upper clamping plate, a back stripping plate and an upper stripping plate, wherein the upper die base, the upper base plate, the upper clamping plate, the back stripping plate and the upper stripping plate are sequentially stacked from top to bottom.

3. The structure of preventing scrap return in a progressive die as set forth in claim 1, wherein: the lower die part comprises a lower die plate, a lower backing plate and a lower die base, wherein the lower die plate, the lower backing plate and the lower die base are sequentially overlapped from top to bottom.

4. The structure of preventing scrap return in a progressive die as set forth in claim 1, wherein: the inner wall of the inner cavity of the female die is provided with a bulge for extruding the punched waste, and the bottom of the punching punch is provided with a yielding empty groove for avoiding the bulge.

5. The structure of preventing scrap return in a progressive die as set forth in claim 1, wherein: the bottom surface of the ironing punch is lower than the bottom surface of the piercing punch.

6. The structure of preventing scrap return in a progressive die as set forth in claim 2, wherein: the thinning punch is vertically embedded in an upper clamping plate, a back stripping plate and an upper stripping plate of the upper die part.

7. The structure of preventing scrap return in a progressive die as set forth in claim 2, wherein: the punching punch is vertically embedded in an upper clamping plate, a back stripping plate and an upper stripping plate of the upper die part.

8. The structure of preventing scrap return in a progressive die as set forth in claim 3, wherein: the female die is vertically embedded in the lower template of the lower die part.