CN206230824U - The multi-direction reverse buckle demolding mechanism of injection mold plastic - Google Patents

Abstract

The multi-direction reverse buckle demolding mechanism of injection mold plastic; the utility model belongs to thermoplastic plastics shaping mould applications; it is mainly used in plastic product and is provided with the mould of multi-direction back-off; extra power set need not be configured; the smooth demoulding of the multi-direction back-off of injection mold plastic is realized by the elastic force of mould die sinking power and spring, beneficial effect is：Problem present in the multi-direction back-off forming process of injection mold plastic is solved by the multi-direction reverse buckle demolding mechanism of injection mold plastic, cover half first take out block 2, cover half sliding shoe 4, the spring 9 of shouldered tap bolt 8 and first with the use of the demoulding for realizing plastic product inner reverse fastener；Hook leg 10, small slide block 11, spacing mold insert 12 and second spring 16 with the use of the demoulding for realizing back-off on the outside of plastic product, this mould structure stable working reliability, stripping action stabilization, product is set to reach technical requirements and use requirement, save die space, it is simple and compact for structure, cost-effective, improve production efficiency.

Description

Injection mold plastic parts multi-directional buckle release mechanism

technical field

The utility model belongs to the field of molding molds for thermoplastic plastics, and relates to a multi-directional buckling and stripping mechanism for plastic parts of injection molds.

Background technique

The thermoplastic injection molding method is to melt the plastic material and inject it into the film cavity. The molten plastic enters the mold and is cooled to form a certain shape according to the cavity. The resulting shape is often the final product. Other processing is required; the undercut is a protruding or concave part set on the product to meet the requirements of assembly and use. After molding, it cannot slide out along the mold parting direction. The existence of the undercut prevents the mold from fixing and moving. When the mold is separated, the product is directly separated from the mold, usually using a fixed mold or a movable mold slider mechanism, or using an inclined roof mechanism to realize the ejection of the undercut. When the plastic product is equipped with a multi-directional undercut conventional slider and inclined The device will cause the mold structure to be complicated, occupying a large mold space, resulting in a larger mold shape and higher cost; in summary, in order to solve the shortcomings of the existing mold structure, it is necessary to design a structure that is simple, saves mold space, and saves Low-cost and easy-to-process multi-directional undercut ejection mechanism.

Contents of the invention

The purpose of the utility model is to provide a multi-directional buckling and stripping mechanism for injection mold plastic parts, which does not need to be equipped with an additional power device, and relies on the power of mold opening and the elastic force of springs to realize the smooth demoulding of multi-directional buckling plastic parts of injection molds.

The technical problem to be solved by the utility model is to provide a multi-directional undercut and demoulding mechanism for plastic parts of injection molds to solve the problems existing in the multi-directional undercut molding process of plastic parts, so that the product can be demoulded smoothly and meet the technical requirements and use requirements.

The technical scheme of the utility model is: a multi-directional buckling and demoulding mechanism for plastic parts of injection molds, the structure of which includes: the first pressing plate 1, the first drawing block 2 of the fixed mold, the second pressing plate 3, the sliding block 4 of the fixed mold, the fixed mold inserting Block 5, fixed mold floating plate 6, fixed template 7, shoulder bolt 8, first spring 9, hook leg 10, small slider 11, limit insert 12, large slider 13, moving mold insert 14, moving The template 15, the second spring 16; the connection relationship of the multi-directional reverse buckle release mechanism of the plastic part of the injection mold is: the first pressing plate 1 is in contact with the floating plate 6 of the fixed mold and fixed by bolt locking, and the fixed mold first draws block 2 and the second One side of the pressing plate is in close contact with each other and the position is limited. The fixed mold first draws block 2 and the fixed mold insert 5 sides and slides to fit. , the fixed mold first draws the block 2 and the fixed template 7 for clearance fit, the second pressure plate 3 is in contact with the fixed template 7, the second pressure plate 3 is in contact with the fixed mold insert 5 and is fixed by bolt locking, and the fixed mold sliding block 4 is in contact with the first fixed mold. The 3 sides of the two pressure plates are in contact and slide fit, the fixed mold sliding block 4 and the fixed mold insert 5 are in contact and slide fit are connected by a hanging table, the first drawing block 2 of the fixed mold is provided with a wedge-tight slope, and the fixed mold sliding block 4 is provided with There are wedging slopes and threaded holes, the wedging surface set on the fixed mold first drawing block 2 contacts and wedges the wedging surface set on the fixed mold sliding block 4, and the shoulder bolt 8 is threaded with the fixed mold sliding block 4 Connection, the shoulder bolt 8 is in clearance fit with the fixed mold insert 5, the first spring 9 is in contact with the fixed mold sliding block 4, the first spring 9 is in contact with the bottom surface of the fixed mold insert 5 and the surrounding clearance is matched, and the first spring 9 is in contact with the fixed mold insert 5. The shoulder bolts 8 are clearance fit; the hook leg 10 is provided with a square positioning platform and a wedge-tight slope, the fixed mold insert 5 is provided with a square pit, the hook leg 10 is provided with a square positioning platform and the fixed mold insert 5 There is a square pit surface contact and the limit is fixed by bolt locking; the small slider 11 is provided with a wedging slope, a guide platform, a sliding platform and a blind hole for spring placement, and the limit insert 12 is provided with a positioning boss and steps On the surface, the large slider 13 is provided with a guide groove, a limit groove and a square pit, and the wedging inclined surface provided on the hook leg 10 is in contact with and wedged with the wedging inclined surface provided on the small slider 11. The small slider The guide platform provided on 11 contacts and slides with the guide groove surface provided on the large slider 13 and slidably fits, the slide platform provided on the small slider 11 contacts and slides with the limit groove surface provided on the large slide 13, The spring 16 is in clearance fit with the fixed spring placement blind hole set on the small slider 11, and the positioning boss set on the limit insert 12 is in contact with the square concave surface set on the big slider 13 and is tightly matched and fixed by bolts , the bottom surface of the limiting insert 12 is in contact with the top surface of the small slider 11 and slidably fit; the large slider 13 is in contact with the movable mold insert 14 and slidably matched, and the movable mold insert 14 is in surface contact with the movable template 15 and tightly The fit is secured by a bolt lock.

The working principle of the multi-directional reverse buckle ejection mechanism for plastic parts of injection molds is: when the mold is opened, under the action of the molding machine, when the floating plate 6 of the fixed mold is separated from the fixed template 7, the fixed mold first pulls the block 2 along with the fixed mold. The floating plate 6 of the mold moves, and at the same time, the wedging force exerted by the first drawing block 2 of the fixed mold on the sliding block 4 of the fixed mold disappears. Under the action of the tension of the first spring 9, the sliding block 4 of the fixed mold moves along a straight line. When the hanging table surface of the fixed mold insert 5 is in contact with the sinking table surface of the fixed mold insert 5, the fixed mold sliding block 4 stops moving, and at the same time breaks away from the inner undercut part of the plastic product; The insert 5 moves together, and the wedging force exerted by the hook leg 10 on the small slider 11 disappears. Under the action of the tension force of the second spring 16, the guide platform provided on the small slider 11 is guided by the guide set on the large slider 13. Sliding in the groove, when the end of the small slider 11 is in contact with the step surface of the limit insert 12, the small slider 11 stops moving and simultaneously breaks away from the outer undercut part of the plastic product.

There is a gap between the bottom surface of the hanging platform of the shoulder bolt 8 and the bottom surface of the sinking platform of the fixed mold insert 5 in the mold-closed state, and the distance of the gap is the mold opening distance of the sliding block 4 of the fixed mold.

There is a gap between the end of the small slider 11 and the step surface of the limiting insert 12 when the mold is closed, and the distance of the gap is the mold opening distance of the small slider 11 .

The beneficial effects of the utility model are: the problems existing in the multi-directional undercut molding process of the plastic parts of the injection mold are solved by the multi-directional undercut and demoulding mechanism of the plastic parts of the injection mold. The cooperative use of the shoulder bolt 8 and the first spring 9 realizes the demoulding of the inner undercut of the plastic product; the cooperative use of the hook leg 10, the small slider 11, the limit insert 12 and the second spring 16 realizes the mold release of the plastic part. The product is demolded with undercuts on the outside. The mold structure works smoothly and reliably, and the demoulding action is stable, so that the product meets the technical requirements and use requirements, effectively saving the mold space, simple and compact structure, saving costs and improving production efficiency.

Description of drawings

Below in conjunction with accompanying drawing, with embodiment concrete description.

Figure 1 is the overall schematic diagram of the mechanism.

Figure 2 is a schematic cutaway view of the mechanism.

Fig. 3 is the second cut-away schematic diagram of this mechanism.

Fig. 4 is the cooperating schematic diagram of the fixed mold drawing block 2 and the fixed mold sliding block 4 of this mechanism.

FIG. 5 is a schematic diagram of cooperation between the hook leg 10, the small slider 11 and the limit insert 12 of the mechanism.

In the figure: 1 the first pressing plate; 2 the first drawing block of the fixed mold; 3 the second pressing plate; 4 the sliding block of the fixed mold; 5 the insert of the fixed mold; 6 the floating plate of the fixed mold; 7 the fixed template; 10 hook legs; 11 small sliders; 12 limit inserts; 13 large sliders; 14 movable mold inserts; 15 movable templates; 16 second springs.

detailed description

Describe the specific embodiment of utility model in detail below in conjunction with technical text and accompanying drawing.

When assembling the mould, the fixed mold first draws the block 2 and installs it in the mold cavity processed by the fixed mold floating plate 6 and is limited by the hanging table. Firstly, the 2 sides of the drawing block are contacted and pressed tightly, and the bolt passes through the first pressure plate 1 to lock and fix it with the floating plate 6 of the fixed mold; the first spring 9 is installed in the cavity processed by the insert 5 of the fixed mold, and the fixed mold slides Block 4 is installed in the mold cavity processed by fixed mold insert 5 and is limited by a hanging table. The threads processed on the sliding block 4 are tightened and assembled. The second pressure plate 3 is installed in the cavity processed by the fixed mold insert 5 and is in contact with the surface of the fixed mold sliding block 5. Locked and fixed with the fixed mold insert 5; the hook leg 10 is installed in the processed cavity of the fixed mold insert 5, and the bolt passes through the hook leg 10 to lock and fix it with the fixed mold insert 5; the fixed mold insert 5 Installed in the mold cavity processed by the fixed template 7, the bolts pass through the fixed template 7 to lock and fix the fixed mold insert 5; The block 2 is fitted in the processed square hole of the fixed template 7, and the fixed mold first pulls out the block 2 and wedges the fixed mold sliding block 4 (see Figure 3 and 4); the limit insert 12 is installed on the large slider 13 The processed cavity is limited by the boss, and the bolt passes through the limiting insert 12 to lock and fix it with the large slider 13. The second spring 16 is installed in the blind hole processed by the small slider 11. The second The second spring 16 and the small slider 11 are assembled together in the large slider 13 (see Figure 5), and the guide platform provided on the small slider 11 is installed in the guide groove processed on the large slider 13 for sliding fit (see Figure 5). 2) The movable mold insert 14 is installed in the cavity processed by the movable template 15 and the position is limited, and the bolt passes through the movable template 15 to fix the movable mold insert 14 on the movable template 15; the large slider 13 is installed on the movable mold Sliding fit in the cavity processed on the insert 14; the fixed mold part and the movable mold part are closed, the hook leg 10 and the small slider 11 are wedge-fitted and positioned (see Figures 1 and 5), and the plastic parts of the injection mold are multi-directional The reverse buckle release mechanism is assembled.

The specific molding process is: after the injection of the molding machine is completed, the mold performs mold opening movement, the fixed mold floating plate 6 is separated from the fixed mold plate 7, and the fixed mold first draws block 2 along with the movement of the fixed mold floating plate 6 and simultaneously separates from the fixed mold sliding block 4 , under the action of the first spring 9, the sliding block 4 of the fixed mold linearly moves away from the undercut on the inner side of the plastic product; Under the action of small slide block 11, linear motion breaks away from the undercut on the outside of the plastic product.

The above is a superior embodiment of the utility model, it should be pointed out that for those skilled in the art to which the utility model belongs, some improvements and deformations can also be made without departing from the technical principle of the utility model. Improvements and deformations should also be regarded as the protection scope of the present utility model.

Claims (4)

1. Injection mold plastic parts multi-directional buckle ejection mechanism, its structure includes: first pressure plate (1), fixed mold first pumping block (2), second pressure plate (3), fixed mold sliding block (4), fixed mold Mold insert (5), fixed mold floating plate (6), fixed template (7), shoulder bolt (8), first spring (9), hook leg (10), small slider (11), limit Insert (12), large slider (13), movable mold insert (14), movable template (15), second spring (16); it is characterized in that: the connection relationship is that the first pressure plate (1) and the fixed The surface contact of the floating plate (6) of the mold is locked and fixed by bolts. The fixed mold first draws the block (2) and the first pressure plate (1) to closely match and limit the position. The fixed mold first draws the block (2) and the fixed mold insert (5) Surface contact and sliding fit, the fixed mold first draws the block (2) and the fixed mold floating plate (6) surface contact and closely fits and is connected by a hanging table, the fixed mold first draws the gap between the fixed mold block (2) and the fixed formwork (7) Cooperate, the second pressure plate (3) is in surface contact with the fixed template (7), the second pressure plate (3) is in surface contact with the fixed mold insert (5) and fixed by bolt locking, the fixed mold sliding block (4) and the second pressure plate (3) Surface contact and sliding fit. The fixed mold sliding block (4) and the fixed mold insert (5) are in surface contact and sliding fit are connected by a hanging table. The sliding block of the mold (4) is provided with a wedging inclined surface and a threaded hole, and the wedging surface set on the fixed mold first drawing block (2) contacts and wedges tightly with the wedging surface set on the fixed mold sliding block (4). , the shoulder bolt (8) is threadedly connected with the fixed mold sliding block (4), the shoulder bolt (8) is in clearance fit with the fixed mold insert (5), the first spring (9) is connected to the surface of the fixed mold sliding block (4) contact, the first spring (9) is in clearance fit with the bottom surface of the fixed mold insert (5), and the first spring (9) is in clearance fit with the shoulder bolt (8); the hook leg (10) is provided with a square positioning platform and wedging the inclined surface, the fixed mold insert (5) is provided with a square pit, the hook leg (10) is provided with a square positioning platform and the fixed mold insert (5) is provided with a square pit surface contact and limited by The bolts are locked and fixed; the small slider (11) is provided with a wedging slope, a guide platform, a sliding platform and blind holes for placing springs, the limit insert (12) is provided with a positioning boss and a step surface, and the large slider ( 13) is provided with guide grooves, limit grooves and square pits, and the wedging inclined surface provided on the hook leg (10) contacts and wedges tightly with the wedging inclined surface provided on the small slider (11), and the small slider The guide table set on (11) is in contact with the guide groove surface set on the large slider (13) and slidably fit, the slide table set on the small slider (11) and the limit groove set on the large slide block (13) Surface contact and sliding fit, the second spring (16) and the fixed spring on the small slider (11) are placed in the blind hole for clearance fit, and the positioning boss set on the limit insert (12) and the large slider (13) The surface of the square pit set on the top contacts and closely fits and is locked and fixed by bolts. The bottom surface of the limit insert (12) contacts and slidably fits with the top surface of the small slider (11); the large slider (13) and the moving Die insert (14) surface contact sliding fit, movable die insert (14) and The movable formwork (15) is in surface contact and closely fitted and fixed by bolt locking. 2. The multi-directional undercut ejection mechanism for plastic parts of injection molds according to claim 1, characterized in that: when the fixed mold floating plate (6) is separated from the fixed mold plate (7) during the mold opening movement, the fixed mold is pulled out first The block (2) moves with the fixed mold floating plate (6), and at the same time the wedging force exerted by the fixed mold on the fixed mold sliding block (4) by the fixed mold first pumping block (2) disappears, under the action of the tension of the first spring (9) , the sliding block of the fixed mold (4) moves along a straight line, when the hanging table surface of the shoulder bolt (8) contacts the sinking surface of the fixed mold insert (5), the sliding block of the fixed mold (4) stops moving and at the same time breaks away from the plastic part The inner undercut part of the product; the hook leg (10) moves together with the fixed mold insert (5), the wedging force exerted by the hook leg (10) on the small slider (11) disappears, and the second spring (16 ) tension, the guide platform set on the small slider (11) slides in the guide groove set on the big slider (13), when the end of the small slider (11) and the step surface of the limit insert (12) When in contact, the small slider (11) stops moving and breaks away from the outer undercut part of the plastic product at the same time. 3. The multi-directional upside-down stripping mechanism for plastic parts of injection molds according to claim 1, characterized in that: the bottom surface of the hanging table of the shoulder bolt (8) fits with the bottom surface of the sinking table of the fixed mold insert (5) A gap is provided under the mold state, and the distance of the gap is the mold opening distance of the fixed mold sliding block (4). 4. The multi-directional undercut ejection mechanism for plastic parts of injection molds according to claim 1, characterized in that: the end of the small slider (11) and the step surface of the limit insert (12) are in the mold clamping state A gap is provided, and the distance of the gap is the mold opening distance of the small slide block (11).