CN102873716A

CN102873716A - Precision punching die for ultra-thin plastic sheets

Info

Publication number: CN102873716A
Application number: CN2012104273013A
Authority: CN
Inventors: 王慧; 石海明; 李颀; 白双喜; 王彦生
Original assignee: Zhonghuan Hi-Tech Co Ltd Tianjin City
Current assignee: Zhonghuan Hi-Tech Co Ltd Tianjin City
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2013-01-16

Abstract

The invention relates to a precision punching die for ultra-thin plastic sheets. Four inner guide poles for guiding are additionally arranged on a common punching die, and are respectively inserted into through holes formed by a punch pin fixing plate and an unloading plate; the top ends of the four inner guide poles are propped against the lower end surface of an upper die plate; the inner guide poles are fixed with punch pins in a clearance fit manner instead of a transition fit manner, that is, the inner guide poles and the punch pins are in clearance fit with the fixing plate, and are in transition fit with the unloading plate, so as to ensure the guiding precision stability of the inner guide poles, and further ensure that the punch pins can conduct high-precision punching, and round holes, special-shaped holes and other shapes with the precision within minus or plus 0.03mm can be punched out when an ultra-thin plastic sheet is placed onto a dedicated die. The precision punching die has the benefits that the punching method is easy to operate; a product is positioned accurately; round holes, special-shaped holes and other shapes with the precision within minus or plus 0.03mm can be punched out; the qualification rate can be higher than 98 percent; the precision and the product quality of a punched product can be improved greatly; and the requirement of mass production can be met.

Description

The accurate punching mould of super-thin plastic sheet material

Technical field

The present invention relates to a kind of die cutting die of plastic sheet, particularly a kind of accurate punching mould of super-thin plastic sheet material.

Background technology

Usually the punching products of super-thin plastic sheet material is to use general die cutting die to carry out die-cut, about its precision ± 0.1mm, but its die-cut precision does not satisfy client's quality requirement, and for having improved product quality, so designing and developing of the accurate punching mould of super-thin plastic sheet material is necessary.

Summary of the invention

Needs in view of present actual production, the invention provides a kind of accurate punching mould of super-thin plastic sheet material, concrete technical scheme is a kind of accurate punching mould of super-thin plastic sheet material, comprise part of the upper die and part of the lower die, the part of the upper die comprises again guide pin bushing, cope match-plate pattern, punch fixing plate, stripper, drift and spring, the part of the lower die comprises again lower bolster, ball guide pillar parts, backing plate, concave template, the vacuum suction connector, alignment pin, it is characterized in that: the part of the upper die also comprises inner guiding post, the part of the upper die is connected to four guide pin bushings and is fixed four jiaos of places, lower surface at cope match-plate pattern by being full of, punch fixing plate is fixed in the middle of the cope match-plate pattern, and four springs after being put in four blind holes on the punch fixing plate pass through stripper and punch fixing plate DischargingScrew connects, and several drifts and four inner guiding posts are inserted in respectively in the through hole of composition of punch fixing plate and stripper and the top withstands on the lower surface of cope match-plate pattern; The part of the lower die is connected to four ball guide pillar parts and is fixed four jiaos of places, upper surface at lower bolster by being full of, and backing plate, concave template are screwed in the middle of lower bolster successively by alignment pin; Two vacuum suction connectors are threaded in the concave template rear end face; Part of the upper die and part of the lower die insert respectively to become matched in clearance to be connected in four guide pin bushings and make cope match-plate pattern and concave template on a central vertical axis by four ball guide pillar parts.Drift and inner guiding post and punch fixing plate precision matched in clearance, with stripper be interference fits.

The invention has the beneficial effects as follows, the method for die cutting processing ease, product orientation is accurate, can go out precision can reach ± 0.03mm is with shapes such as interior circular hole, profiled holes, qualification rate can reach more than 98%, improve greatly the precision of punching products and the quality of product, be fit to the needs of large-scale production in enormous quantities.

Description of drawings

Fig. 1 is Mould operation side constitutional diagram of the present invention;

Fig. 2 is mould not operation side constitutional diagram of the present invention;

Fig. 3 is part of the upper die of the present invention combination stereogram;

Fig. 4 is part of the lower die of the present invention combination stereogram;

Fig. 5 is top view of the present invention;

Fig. 6 is A-A cutaway view of the present invention;

Fig. 7 is B-B cutaway view of the present invention.

The specific embodiment

Shown in Fig. 1-7, the part of the upper die is connected to four guide pin bushings 1 and is fixed four jiaos of places, lower surface at cope match-plate pattern 2 by being full of, punch fixing plate 3 is fixed in the middle of the cope match-plate pattern 2, after four springs 7 are put in four blind holes on the punch fixing plate 3 stripper 4 and punch fixing plate 3 are connected by unloading bolt, four drifts 5 and four inner guiding posts 6 are inserted in respectively in the through hole of composition of punch fixing plate 3 and stripper 4 and the top withstands on the lower surface of cope match-plate pattern 2, drift 5 and inner guiding post 6 and punch fixing plate 3 precision matched in clearance, be reduced to monolateral 0.005mm for interference fits and with guiding accuracy from general monolateral 0.02mm with stripper 4, its guiding accuracy is greater than the monolateral 0.01mm of the quality of fit of drift.The part of the lower die is connected to four ball guide pillar parts 9 and is fixed four jiaos of places, upper surface at lower bolster 8 by being full of, and backing plate 10, concave template 11 are screwed in the middle of lower bolster 8 successively by alignment pin 13; Two vacuum suction connectors 11 are threaded in concave template 11 rear end faces; Part of the upper die and part of the lower die are inserted respectively four guide pin bushings, 1 interior one-tenth matched in clearance by four ball guide pillar parts 9 and are connected and make cope match-plate pattern 2 and concave template 11 on a central vertical axis.

Because common die cutting die has increased the guiding of inner guiding post, the fixed form of inner guiding post and drift changes matched in clearance into by original interference fits, be that inner guiding post and drift and fixed head are matched in clearance, inner guiding post and drift and stripper interference fits, guaranteed the stability of the guiding accuracy of inner guiding post, make drift can carry out high accuracy die-cut, the super-thin plastic sheet material is put into just can go out precision on the particular manufacturing craft and can reach ± 0.03mm with the shape such as circular hole, profiled holes.

Claims

1. the accurate punching mould of a super-thin plastic sheet material, comprise part of the upper die and part of the lower die, the part of the upper die comprises again guide pin bushing (1), cope match-plate pattern (2), punch fixing plate (3), stripper (4), drift (5) and spring (7), the part of the lower die comprises again lower bolster (8), ball guide pillar parts (9), backing plate (10), concave template (11), vacuum suction connector (12), alignment pin (13), it is characterized in that: the part of the upper die also comprises inner guiding post (6), the part of the upper die is connected to four guide pin bushings (1) and is fixed four jiaos of places, lower surface at cope match-plate pattern (2) by being full of, punch fixing plate (3) is fixed in the middle of the cope match-plate pattern (2), four springs (7) are connected with punch fixing plate (3) stripper (4) after being put in four blind holes on the punch fixing plate (3) by unloading bolt, several drifts 5 and four inner guiding posts (6) are inserted in respectively in the through hole of composition of punch fixing plate (3) and stripper (4) and the top withstands on the lower surface of cope match-plate pattern (2); The part of the lower die is connected to four ball guide pillar parts (9) and is fixed four jiaos of places, upper surface at lower bolster (8) by being full of, and backing plate (10), concave template (11) are screwed in the middle of lower bolster (8) successively by alignment pin (13); Two vacuum suction connectors (12) are threaded in concave template (11) rear end face; Part of the upper die and part of the lower die insert respectively to become matched in clearance to be connected in four guide pin bushings (1) and make cope match-plate pattern (2) and concave template (11) on a central vertical axis by four ball guide pillar parts (9).

2. the accurate punching mould of a kind of super-thin plastic sheet material as claimed in claim 1 is characterized in that: drift (5) and inner guiding post (6) are with punch fixing plate (3) precision matched in clearance, be interference fits with stripper (4).