CN216635210U - Precision mold with first-drawing protection mechanism - Google Patents

Abstract

A precise mould with a first-drawing protection mechanism belongs to the field of thermoplastic plastic forming moulds and is mainly applied to a protection mechanism of a precise mould with an opposite-inserting surface embedded with a slide block in the plastic product forming process, the simultaneous separation of a fixed mould part template is realized by utilizing the combined action of mould opening force, a spring and a push block, the motion of a floating block is realized by utilizing the linear motion of a first-drawing plate, the first-drawing motion of an opposite-inserting insert is realized by utilizing the thrust of the floating block and a fixture block and the tension of a second spring, the separation of a first fixed block and the floating block is realized by utilizing the limiting action of a shoulder bolt and the retraction action of the fixture block, the reset of the fixture block is realized by utilizing the chamfer pushing action of a guide block on the fixture block, the first-drawing protection mechanism realizes the first-drawing motion of the opposite-inserting insert and the later retraction motion of the slide block insert, the mould opening sequence is ensured, the damage to the mould is prevented, and the mould cost is saved, the mold structure is simplified, the production process of plastic products is stable, the production efficiency is improved, and the reject ratio is reduced.

Description

Precise mould with first extraction protection mechanism

technical field

The utility model belongs to the field of thermoplastic plastic molding molds, and relates to a precision mold provided with a first-extraction protection mechanism. Smooth progress while protecting the life of precision molds.

Background technique

Plastic products have the advantages of light weight, good chemical stability and good electrical insulation performance, and are widely used in daily life and industrial production. In order to achieve various uses and assembly needs, plastic products will be provided with deep ribs and undercuts and other shapes. , The molding and mass production of plastic products are realized by injection molds. When the inserts in the shape of the fixed mold and the sliding part of the movable mold have a plug-in part, the conventional mold structure cannot realize the sliding block first and then the sliding block for the insert. mold structure.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a precision mold with a first-extraction protection mechanism, which realizes the separation of the template by the joint action of the spring and the push block, and realizes the first-extraction of the insert by relying on the force of the template separation, so as to ensure the smooth operation of the plastic product. Production.

The technical problem to be solved by the utility model is to provide a precision mold with a first extraction protection mechanism, solve the problems existing in the production process of the plastic product mold with deep ribs and inverted buttons, ensure the shape of the plastic product, and make the plastic product demold smoothly. And meet the technical requirements and use requirements.

The technical scheme of the utility model is: the structure of the precision mold provided with the first pumping protection mechanism includes: a hot runner plate 1, a first pumping plate 2, a fixed template 3, a movable template 4, a first pull rod 5, a push block 6, a first Spring 7, second pull rod 8, fixed mold insert 9, floating block 10, stop bar 11, first fixed block 12, second fixed block 13, clamping block 14, ball head screw 15, guide block 16, limit block 17. Counter inserts 18, shoulder bolts 19, second springs 20, slider inserts 21, slider bases 22, screws 23 and movable die inserts 24; the connection relationship is that the hot runner plate 1 and the first pump The surface contact of plate 2 is connected by the guide column guide sleeve, the surface contact between the first drawing plate 2 and the fixed template 3 is connected by the guide column guide sleeve, the surface contact between the fixed template 3 and the movable template 4 is connected by the guide column guide sleeve, and the first pull rod 5 is connected with the heat flux. The channel plate 1 is in clearance fit, the first pull rod 5 is screwed and fixed with the first extraction plate 2, the push block 6 is in contact and sliding fit with the first extraction plate 2, the push block 6 is in contact with the hot runner plate 1 and is limited, the first spring 7 and the push block 6 clearance fit, the first spring 7 is in contact with the hot runner plate 1 and is limited, the second pull rod 8 is in contact with the first drawing plate 2 and is threadedly connected and fixed, and the second pull rod 8 is in contact with the fixed template 3 and the movable template. 4 Clearly fit, the fixed die insert 9 is in close contact with the fixed die puller 3 and is locked and fixed by bolts, the floating block 10 is in close contact with the first drawing plate 2 and is fixed by bolt locking, and the stop bar 11 and the floating block 10 The close contact is limited by the hanging platform, the first fixed block 12 is in contact with the rail 11 and is limited by the rail 11, the first fixed block 12 and the second fixed block 13 are in close contact with each other and are locked and fixed by bolts. A fixed block 12 and a second fixed block 13 as a whole are in surface contact with the limit block 17 and are in sliding fit, the clamping block 14 is in surface contact and sliding fit with the floating block 10, and the ball head screw 15 is in surface contact with the clamping block 14 and is limited. The ball head screw 15 is in contact with the floating block 10 and is threadedly connected and positioned. The ball head screw 15 is in contact with the retaining bar 11 and is limited by the retaining bar 11. The floating block 10 and the clamping block 14 are in contact and sliding with the guide block 16. Guide The block 16 is in clearance fit with the first extraction plate 2, the guide block 16 is in close contact with the fixed template 3 and is locked and fixed by bolts, the limit block 17 is in clearance fit with the first extraction plate 2, and the limit block 17 is in contact with the fixed mold insert 9. The contact tight fit is locked and fixed by bolts, the surface contact of the insert insert 18 and the second fixing block 13 is closely matched by the hanging platform, the insert insert 18 and the first fixed block 12 are in surface contact and limited, and the insert insert 18 is in surface contact with the first fixed block 12 and limited 18 and the slider insert 21 are in surface contact and sliding fit, the opposite insert 18 is in clearance fit with the fixed die insert 9, the shoulder bolt 19 is in clearance fit with the first fixing block 12, and the shoulder bolt 19 is in clearance fit with the fixed die insert 9 Threaded and fixed, the second spring 20 is sleeved on the shoulder bolt 19 and fits with clearance, the second spring 20 is in surface contact with the first fixing block 12 and the fixed mold insert 9 and is limited, the slider insert 21 and the slider The surface of the seat 22 is in contact with the hanging platform and is locked and fixed by bolts. The slider seat 22 is in contact and sliding with the movable template 4, the slider seat 22 is in contact and sliding with the movable mold insert 24, and the screw 23 is threaded with the clamping block 14. And fix, screw 23 and floating block 1 0 clearance fit, the movable die insert 24 is in close contact with the movable die plate 4 and is locked and fixed by bolts.

The first pull rod 5 is provided with a hanging table, the hot runner push plate 1 is provided with a counterbore, and the hanging table set on the first pull rod 5 is provided with a first distance from the bottom surface of the counterbore set on the hot runner plate 1. , the first distance is equal to the mold opening distance between the hot runner plate 1 and the first pumping plate 2;

The push block 6 is provided with a hanging table, the first extraction plate 2 is provided with a counterbore, and the bottom surface of the hanging table provided on the push block 6 is provided with a second distance from the bottom surface of the counterbore set on the first extraction plate 2, so The second distance is equal to the distance that the first spring 7 pushes the push block 6 to slide, the push block 6 can be set according to the size of the mold, and the number is symmetrically distributed on the first drawing plate to ensure that the push block 6 applies a given template 3 The force is uniform, and the combined application of the spring 7 and the push block 6 can realize the simultaneous separation of the hot runner plate 1, the first drawing plate 2 and the fixed template 3; the second pull rod 8 is provided with a hanging platform, and the fixed template 3 is provided with a counterbore, the bottom surface of the hanging table set on the second pull rod 8 and the bottom surface of the counterbore set on the fixed template 3 are provided with a third distance, and the third distance is equal to the opening of the first drawing plate 2 and the fixed template 3. distance; the shouldered bolt 19 is provided with a hanging table, the first fixing block 12 is provided with a counterbore, and the bottom surface of the hanging table provided on the shouldered bolt 19 and the bottom surface of the countersunk hole provided on the fixing block 12 are provided There is a fourth distance which is equal to the distance over which the first fixing block 12, the second fixing block 13 and the counter insert 18 slide as a whole.

The floating block 10 is provided with an inclined surface, the first fixed block 12 is provided with a V-shaped groove, and the clamping block 14 is provided with a first chamfer, a second chamfer, a third chamfer, a chamfer, and a first chamfer. The semicircular concave surface and the second semicircular concave surface, the guide block 16 is provided with a slope and a chamfer, the first chamfer and the second chamfer set on the clamping block 14 in the clamping state and the first chamfer set on the first fixing block 12. The V-shaped groove surface is in contact and limited, the inclined surface provided on the floating block 10 and the inclined surface provided on the clamping block 14 are in contact with the inclined surface provided on the guide block 16 and are closely matched, and the ball head screw 15 is set on the clamping block 14. The two semicircular concave surfaces are in contact with each other and are limited; during the mold opening process, under the action of the tension of the second spring 20, the first chamfer provided on the clamping block 14 applies a thrust to the first fixed block 12 to promote the first fixed block 12 together with the second The fixed block 13 and the pair of inserts 18 move together, and the pair of inserts 18 are separated from the slider inserts 21. Under the action of the mold opening force, the V-shaped groove provided on the first fixed block 12 exerts a reaction force on the clamping block 14. , the clamping block 14 retreats, and when the ball head set on the ball head screw 15 contacts the first semicircular concave surface set on the clamping block 14, the clamping block 14 stops moving, and the screw 23 and the clamping block 14 move in a straight line together. The clamping block 14 is limited; the third chamfer set on the clamping block 14 is in contact with the chamfered surface set on the guide block 16 during the mold clamping process, and the chamfer set on the guide block 16 is applied to the clamping block 14. The third chamfering thrust promotes the reset of the clamping block 14. After the clamping block 14 is reset, the inclined surfaces provided on the floating block 10 and the clamping block 14 are in contact and sliding fit with the inclined surfaces provided on the guide block 16; A T-shaped through slot is provided, and hanging platforms are respectively provided on both sides of the second fixing block 13 , and the two hanging platforms provided on the second fixing block 13 are closely matched with the T-shaped slot provided on the first fixing block 12 . and position.

The beneficial effects of the utility model are: the precision mold provided with the first-pulling protection mechanism utilizes the mold opening force, the joint action of the first spring 7 and the push block 6 to realize the simultaneous separation of the fixed mold part templates, and utilizes the linear motion of the first-pulling plate 2 To realize the movement of the floating block 10, the first fixed block 12, the second fixed block 13 and the first-pulling motion of the insert 18 are realized by the thrust of the floating block 10 and the clamping block 14 and the tension of the second spring 20. The limiting action of the bolt 19 and the retreating action of the clamping block 14 realize the separation of the first fixed block 12 and the floating block 10, and the chamfering of the clamping block 14 by the guide block 16 is used to realize the reset of the clamping block 14. The pumping protection mechanism realizes the first pumping movement of the insert 18 and the backward retracting movement of the slider insert 21, which ensures the mold opening sequence, prevents damage to the mold, saves the cost of the mold, simplifies the mold structure, and ensures that the The production process of plastic products is stable, which improves the production efficiency and reduces the defect rate.

Description of drawings

Below in conjunction with the accompanying drawings, specific descriptions are given by embodiments.

FIG. 1 is a schematic diagram 1 of the assembly of a precision mold with a first extraction protection mechanism.

FIG. 2 is a second assembly schematic diagram of a precision mold provided with a first-pulling protection mechanism.

FIG. 3 is a schematic diagram 3 of the internal components of the precision mold provided with the first extraction protection mechanism.

FIG. 4 is a schematic diagram 4 of the internal components of the precision mold provided with the first extraction protection mechanism.

FIG. 5 is a schematic diagram 5 of the internal components of the precision mold provided with the first extraction protection mechanism.

FIG. 6 is a schematic diagram 6 of the internal components of the precision mold provided with the first extraction protection mechanism.

In the figure: 1 hot runner plate; 2 first draw plate; 3 fixed template; 4 movable template; 5 first pull rod; 6 push block; 7 first spring; 8 second pull rod; 9 fixed mold insert; 10 floating block; 11 gear bar; 12 first fixing block; 13 second fixing block; 14 clamping block; 15 ball head screw; 16 guide block; 17 limit block; 18 pair of inserts; 21 Slider inserts; 22 Slider seats; 23 Screws; 24 Moving die inserts.

Detailed ways

The specific embodiments of the utility model are described in detail below in conjunction with the technical text and the accompanying drawings.

Precise mold provided with a first-pumping protection mechanism The utility model is implemented on the assembly of the mold structure. When the mold is assembled, the guide post assembled on the hot runner plate 1 is slidably matched with the guide sleeve assembled on the first-pump plate 2, and the push block 6 Fitted in the cavity processed by the first pumping plate 2, the first spring 7 is fitted in the cavity processed on the push block 6, the first pull rod 5 is fitted in the through hole processed in the hot runner plate 1, The first tie rod 5 passes through the hot runner plate 1 and is connected with the thread that has been processed by the first pumping plate 2 (as shown in Figures 1 and 2). The clamping block 14 is fitted in the square cavity processed by the floating block 10. The screw 23 is connected and locked with the processed thread on the floating block 10, and the screw 23 is connected and locked with the processed thread on the clamping block 14. The stop bar 11 is fitted in the processed through groove on the side of the floating block 10 and is limited by the hanging platform. position, the floating block 10, the retaining bar 11 and the clamping block 14 are assembled on the first drawing plate 2 as a whole, and the bolts pass through the first drawing plate 2 to lock and fix it (as shown in Figure 4 and Figure 6), and the inserts 18 is fitted in the cavity processed by the second fixing block 13 and is limited by the hanging table, and the insert 18 and the second fixing block 13 are assembled in the T-shaped groove processed by the first fixing block 12 as a whole. Inside (as shown in Figure 5), the fixed die insert 9 is fitted in the cavity processed by the fixed die puller 3. The bolts pass through the fixed die pulley 3 to lock and fix the fixed die insert 9, and the limit block 17 is fitted on the fixed die plate. The mold insert 9 is in the machined cavity, the guide block 16 is fitted in the machined cavity of the fixed template 3, the shoulder bolt 19 is fitted in the machined through hole of the first fixing block 12, the second spring 20 Set on the shoulder bolt 19, the first fixing block 12, the second fixing block 13, the insert 18, the shoulder bolt 19 and the second spring 20 are assembled in the cavity processed by the fixed die plate 3 as a whole Inside, the fixed template 3 is connected with the hot runner plate 1 and the first pumping plate 2 by guide posts, and the second pull rod 8 passes through the fixed template 3 and is screwed and locked with the first pumping plate 2 (as shown in Figure 2). The movable die insert 24 is assembled in the cavity processed by the movable die plate 4, the slider insert 21 and the slider seat 22 are assembled to be limited by the hanging table, and the bolt passes through the slider insert 21 to fix it on the slider. On the seat 22, the slider insert 21 and the slider seat 22 are assembled as a whole in the cavity processed by the movable template 4 (as shown in Figures 1 and 4).

Precise mold with first-pulling protection mechanism The utility model is implemented in production. During the injection molding process of the mold, the insert 18 and the slider insert 21 are closely matched and sealed. After the injection is completed, the mold opening force and the spring tension Under the action of the hot runner plate 1, the first drawing plate 2 and the fixed template 3 at the same time, the product material is separated from the plastic product, the insert 18 is separated from the slider insert 21, and when the second pull rod 8 is separated from the fixed template 3 After being contacted and limited, the slider insert 21 and the slider base 22 slide as a whole, and are separated from the undercut part of the plastic product.

The above are the advantageous embodiments of the present utility model. It should be pointed out that for those skilled in the art to which the present utility model belongs, some improvements and modifications can be made without departing from the technical principles of the present utility model. These Improvement and deformation should also be regarded as the protection scope of the present invention.

Claims (3)

1. A precision mold with a first pumping protection mechanism is characterized in that its structure includes: a hot runner plate (1), a first pumping plate (2), a fixed template (3), a movable template (4), a first pull rod (5) ), push block (6), first spring (7), second pull rod (8), fixed die insert (9), floating block (10), rail (11), first fixed block (12), The second fixing block (13), the clamping block (14), the ball head screw (15), the guide block (16), the limit block (17), the insert (18), the shoulder bolt (19), the first Two springs (20), slider inserts (21), slider seats (22), screws (23) and movable mold inserts (24); the connection relationship is that the first pull rod (5) is connected to the hot runner plate ( 1) Clearance fit, the first pull rod (5) is screwed and fixed with the first pumping plate (2), the push block (6) is in contact with the first pumping plate (2), and the push block (6) is in contact with the hot runner plate (2). 1) Surface contact and limit, the first spring (7) and the push block (6) clearance fit, the first spring (7) and the hot runner plate (1) surface contact and limit, the second pull rod (8) and the first The drawing plate (2) is connected and fixed by the surface contact thread, the second tie rod (8) is in clearance fit with the fixed platen (3) and the moving platen (4), and the floating block (10) is in close contact with the first drawing plate (2). The bolts are locked and fixed, the retaining bar (11) and the floating block (10) are in close contact with each other and are limited by the hanging platform, and the first fixing block (12) is in contact with the retaining bar (11) and is limited by the retaining bar (11). , the first fixing block (12) and the second fixing block (13) are in close contact with each other and are locked and fixed by bolts. ) surface contact and sliding fit, the clamping block (14) is in contact with the sliding block (10) surface, the ball head screw (15) is in contact with the clamping block (14) and is limited, the ball head screw (15) is in contact with the floating block (10) Surface-contact threaded connection and positioning, the ball head screw (15) is in surface contact with the rail (11) and is limited by the rail (11), the floating block (10) and the clamping block (14) and the guide block (16) ) surface contact and sliding fit, the guide block (16) is in clearance fit with the first extraction plate (2), the guide block (16) is in close contact with the fixed template (3) in surface contact and is locked and fixed by bolts, and the limit block (17) The drawing plate (2) is in clearance fit, the limit block (17) is in close contact with the fixed die insert (9), and it is locked and fixed by bolts, and the opposite insert (18) is in close contact with the second fixing block (13). The mating is limited by the hanging table, the insert (18) is in surface contact with the first fixing block (12) and is limited, and the insert (18) is in contact with the slider insert (21) for surface contact and sliding fit. The insert (18) is in clearance fit with the fixed die insert (9), the shoulder bolt (19) is in clearance fit with the first fixing block (12), and the shoulder bolt (19) is threadedly connected with the fixed die insert (9). For fixing, the second spring (20) is set on the shoulder bolt (19) and has a clearance fit. The second spring (20) is in surface contact with the first fixing block (12) and the fixed mold insert (9) and is limited, and the screw (23) is screwed and fixed with the clamping block (14), and the screw (23) is in clearance fit with the floating block (10). 2. The precision mold provided with a first-pulling protection mechanism according to claim 1, characterized in that: the push block (6) is provided with a hanging table, and the first-pulling plate (2) is provided with countersunk holes, A second distance is set between the bottom surface of the hanging table set on the push block (6) and the bottom surface of the counterbore set on the first extraction plate (2), and the second distance is equal to the sliding of the push block (6) pushed by the first spring (7). The distance of the push block (6) can be set according to the size of the mold, and it is symmetrically distributed on the first pumping plate to ensure that the push block (6) exerts a uniform force on the given template (3), and the spring (7) The combined application of ) and the push block (6) can realize the simultaneous separation of the hot runner plate (1), the first drawing plate (2) and the fixed template (3); the shoulder bolt (19) is provided with a hanging table, so The first fixing block (12) is provided with a counterbore, and a fourth distance is set between the bottom surface of the hanging table provided on the shoulder bolt (19) and the bottom surface of the counterbore provided on the fixing block (12). The distance is equal to the distance over which the first fixing block (12), the second fixing block (13) and the counter insert (18) slide as a whole. 3. The precision mold provided with the first extraction protection mechanism according to claim 1, characterized in that: the floating block (10) is provided with a slope, and the first fixing block (12) is provided with a V-shaped groove , the clamping block (14) is provided with a first chamfer, a second chamfer, a third chamfer, a chamfer, a first semicircular concave surface and a second semicircular concave surface, and the guide block (16) is provided with a chamfered surface and a second semicircular concave surface. Chamfering, the first chamfer and the second chamfer set on the clamping block (14) in the clamping state are in contact with the V-shaped groove surface set on the first fixing block (12) and are limited, and the floating block (10) is The provided inclined surface and the inclined surface provided on the clamping block (14) are in contact with the inclined surface provided on the guide block (16) and are closely matched, and the ball head screw (15) is in contact with the second semicircular concave surface provided on the clamping block (14). and limit the position; during the mold opening process, under the action of the tension of the second spring (20), the first chamfer provided on the clamping block (14) is applied to the first fixed block (12) with a thrust to promote the first fixed block (12) Moving together with the second fixing block (13) and the opposite insert (18), the opposite insert (18) is separated from the slider insert (21), and the first fixed block (12) is under the action of the mold opening force The V-shaped groove provided on the upper part exerts a reaction force on the clamping block (14), and the clamping block (14) retreats. When in contact, the clamping block (14) stops moving, and the screw (23) moves linearly with the clamping block (14) to limit the clamping block (14); The three chamfers are in contact with the chamfer surface provided on the guide block (16), and the chamfer provided on the guide block (16) exerts a thrust on the third chamfer provided on the clamping block (14) and promotes the clamping block (14) to reset , after the clamping block (14) is reset, the inclined planes provided on the floating block (10) and the clamping block (14) are in contact with the inclined planes provided on the guide block (16) and are slidably matched; the first fixing block (12) is provided with There are T-shaped through-slots, hanging platforms are respectively provided on both sides of the second fixing block (13), the two hanging platforms provided on the second fixing block (13) and the hanging platforms provided on the first fixing block (12) T-slots fit tightly and locate.

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