CN103640189A

CN103640189A - Mold for demolding plastic products by virtue of dovetail groove and spring mechanism

Info

Publication number: CN103640189A
Application number: CN201310736132.6A
Authority: CN
Inventors: 许斌
Original assignee: DALIAN LUANYI PRECISION MOULD MANUFACTURING Co Ltd
Current assignee: DALIAN LUANYI PRECISION MOULD MANUFACTURING Co Ltd
Priority date: 2013-12-29
Filing date: 2013-12-29
Publication date: 2014-03-19
Anticipated expiration: 2033-12-29
Also published as: CN103640189B

Abstract

The invention discloses a mold for demolding plastic products by virtue of a dovetail groove and a spring mechanism, and belongs to the field of thermoplastic forming molds. The mold is characterized in that a mold base comprises fixed and movable mold seat plates, a runner push plate, fixed and movable templates and square iron; an inner structure comprises a fixed mold insert, a dovetail groove insert, a dovetail stand insert, a guide block, bolts A and B with shoulders and springs A and B. The dovetail groove insert and the dovetail stand insert are in surface fit and are connected through dovetail to achieve the limiting and guiding effects; the dovetail stand insert and the fixed mold insert are in table hanging connection; the guide block and a guide block fixing block are in surface fit; during mold opening, the dovetail groove insert slides along the dovetail direction, the dovetail stand insert transversely slides under the tension action of the spring B, and the back-off part of the plastic product is demolded; during mold closing, the dovetail groove insert slides along the dovetail direction, the dovetail stand insert is pushed to transversely slide and reset. The back-off part of the plastic product is demolded by virtue of the dovetail groove and the spring mechanism, the structure of the mold is simplified, the space of the mold is saved, and the production efficiency is improved.

Description

A kind of mould that leans on dovetail groove and spring mechanism to deviate from plastic products

Technical field

The invention belongs to thermoplastic plastics shaping mould applications, relate to a kind of mould that leans on dovetail groove and spring mechanism to deviate from plastic products, be mainly used in the mould that has back-off in plastic product complicated shape.

Background technology

The current plastic product for some outward appearance Shell-Class, the plastic products such as inscription plate or button need to be installed during assembling product and form an integral body, the products such as inscription plate and button are mostly Transparent Parts, so be poor and install and coordinate required gap to have higher requirement to the section of the good looking appearance of housing, installed surface, so need to install in the hole of other working of plastics or groove and be provided with back-off part at shell class plastic product.

At present for there being the mould of back-off to realize by taking out slide block in tunnel type cover half in complicated shape, utilize and in tunnel type cover half, take out slider head moulding back-off part, need to place in the blind hole of the middle processing tunnel formula of inserting the body of slide block, the Angle Pin of guide runner or hook leg are arranged in the template beyond inserting, this kind of mould structure takes up room greatly, processing difficulties, assemble loaded down with trivial details, there will be the problems such as the poor difficult adjustment of burr section, improved die cost, high and high to moulding tonnage and clamp force requirement to the dimensional requirement of mould.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of mould of deviating from plastic products by dovetail groove and spring mechanism, solves the problem that has back-off in plastic product complicated shape, makes the smooth demoulding of product and reaches the object of specification requirement.

Technical scheme of the present invention is, the mould bases of this mould comprises: top clamping plate 1, runner ejection plate 2, solid plate 3, moving platen 4, square iron 5, face needle plate 6, end needle plate 7 and Bottom clamp plate 8, internal structure comprises: fixed die insert 9, dovetail groove mold insert 10, forked tail platform mold insert 11, guide pad 12, shouldered tap bolt A13, shouldered tap bolt B14, moving die insert 15, spring A16, spring B 17, guide pad fixed block 18, stop collar 19, jackscrew 20, cover half mold insert 21, push rod 22.

Inner connecting way is: dovetail groove mold insert 10 is for square mold insert and be provided with dovetail groove, inclined-plane, what parallel two faces directly and square boss, wherein dovetail groove is connected and is played spacing and guide effect by dovetail for face coordinates with forked tail platform mold insert 11, inclined-plane and fixed die insert 9 coordinate for face, played the effect of spacing wedging, what parallel two faces directly with 9 of fixed die inserts and contacts and play position-limiting action, dovetail groove mold insert 10 bodies and guide pad 12 coordinate for face, the square convex at dovetail groove mold insert 10 tops coordinates on four sides with the square cave of guide pad 12, played spacing effect, and pass through bolt-locking,

Forked tail platform mold insert 11 is for square mold insert and be provided with forked tail platform, hanging platform, two facing directly of paralleling, forked tail platform mold insert 11 with fixed die insert 9 for hanging platform is connected, parallel two face directly also spacing for face coordinates with fixed die insert 9; Shouldered tap bolt B14 cover has spring B 17, and by stop collar 19, is threaded and locks with forked tail platform mold insert 11, and stop collar 19 is joined merga pass jackscrew 20 with cover half mold insert 21 for face and located;

Guide pad 12 and guide pad fixed block 18 coordinate for face, four faces of guide pad 12 coordinate and slide with the die cavity inner surface of guide pad fixed block 18, play spacing and guide effect, shouldered tap bolt A13 cover has spring A16 and fixed die insert 9 screw-threaded couplings fixing, spring A16 and guide pad 12, fixed die insert 9 coordinate and play position-limiting action for face, guide pad fixed block 18 and fixed die insert 9 coordinate for face, by bolt-locking, guide pad fixed block 18 is connected by hanging platform with solid plate 3, and be that face coordinates and spacing with the die cavity of solid plate 3, pass through bolt-locking; Fixed die insert 9 is also spacing for face coordinates with solid plate 3, passes through bolt-locking;

During die sinking, under spring A 16 tension force effects, guide pad 12 separates with fixed die insert 9, guide pad 12 drives with the dovetail groove mold insert 10 of its locking and slides along dovetail direction, when dovetail groove mold insert 10 slides, dovetail groove mold insert 10 separates with the inclined-plane that fixed die insert 9 contacts, position-limiting action is cancelled, and under spring B 17 tension force effects, forked tail platform mold insert 11 laterally slides simultaneously, deviates from plastic product back-off part;

During matched moulds, runner ejection plate 2 contacts pusher action-oriented piece 12 and slides with 12 of guide pads, the dovetail groove mold insert 10 being connected with guide pad 12 slides along dovetail direction, finally contact and reset with the inclined-plane of fixed die insert 9, dovetail groove mold insert 10 promotes forked tail platform mold insert 11 when sliding and laterally slides and reset.

The invention has the beneficial effects as follows: the applied in any combination by dovetail groove and spring mechanism has realized deviating from of back-off in plastic product complicated shape, has simplified mould structure, has saved die space, has improved production efficiency.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, with embodiment, illustrate.

Fig. 1 is the schematic diagram one of this mold mechanism.

Fig. 2 is the schematic diagram two of this mold mechanism.

Fig. 3 is the schematic diagram of the complete die sinking of this mold mechanism.

Fig. 4 is the schematic diagram of this mold mechanism dovetail groove die sinking.

In figure: 1 top clamping plate; 2 runner ejection plates; 3 solid plates; 4 moving platens; 5 square iron; 6 needle plates; 7 end needle plates; 8 Bottom clamp plates; 9 fixed die inserts; 10 dovetail groove mold inserts; 11 forked tail platform mold inserts; 12 guide pads; 13 shouldered tap bolt A; 14 shouldered tap bolt B; 15 moving die inserts; 16 spring A; 17 spring B; 18 guide pad fixed blocks; 19 stop collars; 20 jackscrews; 21 cover half mold inserts; 22 push rods.

The specific embodiment

Below in conjunction with technology word and accompanying drawing, describe the specific embodiment of invention in detail.

The assembling of dovetail groove and spring mechanism in mould, dovetail groove mold insert 10 is allocated in guide pad 12, by bolt-locking, guide pad 12 is allocated in guide pad fixed block 18, with bolt, guide pad fixed block 18 is tightly locked on solid plate 3, shouldered tap bolt A13 overlaps upper spring A16 again through guide pad 12, and the screw thread of shouldered tap bolt A13 head is fixed on fixed die insert 9; Spring B 17 is assemblied on cover half mold insert 21, cover half mold insert 21, stop collar 19 and forked tail platform mold insert 11 are assemblied on fixed die insert 9, shouldered tap bolt B14 through stop collar 19 and spring B 17 with forked tail platform mold insert 11 for being threaded and fixing, dovetail groove mold insert 10 is connected by dovetail groove with forked tail platform mold insert 11, and stop collar 19 is joined merga pass jackscrew 20 location with cover half mold insert 21 faces.

During die sinking, the push pedal 2 of effect lower flow channel and solid plate 3 at spring tension flick, top clamping plate 1 and runner ejection plate 2 are separately, solid plate 3 and the moving plate 4 of touching separate, under spring A 16 tension force effects, guide pad 12 separates with fixed die insert 9, guide pad 12 drives with the dovetail groove mold insert 10 of its locking and slides along dovetail direction, when dovetail groove mold insert 10 slides, dovetail groove mold insert 10 separates with the inclined-plane that fixed die insert 9 contacts, position-limiting action is cancelled, under spring B 17 tension force effects, forked tail platform mold insert 11 laterally slides simultaneously, deviate from plastic product back-off part (see figure 4), push rod 22 is with 6 motions of coplanar needle plate, eject plastic product (see figure 3).

During matched moulds, runner ejection plate 2 contacts pusher action-oriented piece 12 and slides with 12 of guide pads, the dovetail groove mold insert 10 being connected with guide pad 12 slides along dovetail direction, finally contact and reset with the inclined-plane of fixed die insert 9, dovetail groove mold insert 10 promotes forked tail platform mold insert 11 when sliding and laterally slides and reset, fixed die insert 9 contacts with moving die insert 15, solid plate 3 and moving plate 4 (see figure 1) that contacts of touching, and matched moulds is complete.

Claims

1. a mould of deviating from plastic products by dovetail groove and spring mechanism, the mould bases of this mechanism comprises: top clamping plate (1), runner ejection plate (2), solid plate (3), moving platen (4), square iron (5), face needle plate (6), end needle plate (7) and Bottom clamp plate (8), internal structure comprises: fixed die insert (9), dovetail groove mold insert (10), forked tail platform mold insert (11), guide pad (12), shouldered tap bolt A(13), shouldered tap bolt B(14), moving die insert (15), spring A(16), spring B (17), guide pad fixed block (18), stop collar (19), jackscrew (20), cover half mold insert (21), push rod (22),

It is characterized in that: inner connecting way is, dovetail groove mold insert (10) is for square mold insert and be provided with dovetail groove, inclined-plane, what parallel two faces directly and square boss, wherein dovetail groove is connected and is played spacing and guide effect by dovetail for face coordinates with forked tail platform mold insert (11), inclined-plane and fixed die insert (9) coordinate for face, played the effect of spacing wedging, what parallel two faces directly with fixed die insert (9) face and contacts and play position-limiting action, dovetail groove mold insert (10) body and guide pad (12) coordinate for face, the square convex at dovetail groove mold insert (10) top coordinates on four sides with the square cave of guide pad (12), played spacing effect, and pass through bolt-locking,

Forked tail platform mold insert (11) is for square mold insert and be provided with forked tail platform, hanging platform, two facing directly of paralleling, forked tail platform mold insert (11) with fixed die insert (9) for hanging platform is connected, parallel two face directly also spacing for face coordinates with fixed die insert (9); Shouldered tap bolt B(14) cover has spring B (17), and by stop collar (19), is threaded and locks with forked tail platform mold insert (11), and stop collar (19) is joined merga pass jackscrew (20) with cover half mold insert (21) for face and located;

Guide pad (12) and guide pad fixed block (18) coordinate for face, four faces of guide pad (12) coordinate and slide with the die cavity inner surface of guide pad fixed block (18), play spacing and guide effect, shouldered tap bolt A(13) cover has spring A(16) also fixing with fixed die insert (9) screw-threaded coupling, spring A(16) with guide pad (12), fixed die insert (9) coordinates and plays position-limiting action for face, guide pad fixed block (18) and fixed die insert (9) coordinate for face, by bolt-locking, guide pad fixed block (18) is connected by hanging platform with solid plate (3), and be that face coordinates and spacing with the die cavity of solid plate (3), pass through bolt-locking, fixed die insert (9) is also spacing for face coordinates with solid plate (3), passes through bolt-locking,

During die sinking, at spring A(16) guide pad (12) separates with fixed die insert (9) under tension force effect, guide pad (12) drives with the dovetail groove mold insert (10) of its locking and slides along dovetail direction, when dovetail groove mold insert (10) slides, dovetail groove mold insert (10) separates with the inclined-plane that fixed die insert (9) contacts, position-limiting action is cancelled, and under spring B (17) tension force effect, forked tail platform mold insert (11) laterally slides simultaneously, deviates from plastic product back-off part;

During matched moulds, runner ejection plate (2) contacts pusher action-oriented piece (12) and slides with guide pad (12) face, the dovetail groove mold insert (10) being connected with guide pad (12) slides along dovetail direction, finally contact and reset with the inclined-plane of fixed die insert (9), dovetail groove mold insert (10) promotes forked tail platform mold insert (11) when sliding and laterally slides and reset.