Moving mold with side ejection mechanism for injection molding part

Abstract

The utility model relates to an injection-molded part movable mold with a side ejection mechanism. The injection-molded part movable mold comprises a movable mold base, a movable mold core and an ejection pin mechanism, the movable mold core is fixed on the inner surface of the movable mold base, and a movable mold cavity is formed in the inner surface of the movable mold core; the thimble mechanism comprises a supporting plate and a plurality of thimbles; at least one side ejection mechanism is arranged on one side of the movable mold base; each side ejection mechanism comprises a second oil cylinder, a supporting base, a sliding block and an inclined ejection strip; piston rods of the second oil cylinders vertically point to the side surface of the movable mold core; a positioning block is fixed on the movable mold core; a step part is horizontally arranged on the inner side surface of the positioning block; the supporting seat is fixed with the end part of a piston rod of the second oil cylinder; the sliding block penetrates through a positioning block on the movable mold core in a sliding mode, and a sliding groove is horizontally and obliquely formed in the upper surface of the sliding block. A protruding block is arranged on the lower surface of the tail portion of the inclined ejector strip, and the inclined ejector strip is placed on the step portion of the positioning block through the protruding block. According to the utility model, the injection-molded part for the automobile spare part can be quickly separated from the movable mold, and the bulge on the back surface of the injection-molded part cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts injection molding processing, in particular to an injection molding moving mold with a side ejection mechanism. Background Art

[0002] In the field of automobile manufacturing, injection molded parts are an important part. Injection molded parts refer to various injection molded products produced by injection molding machines, including various packages, parts, etc. They are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents.

[0003] Currently, if Figure 1 As shown in the figure, an injection molded part for automotive parts has a convex structure on the back. After the injection molded product is formed, it interferes with the movement direction of the ejector mechanism on the movable mold, making it difficult to separate the product from the mold, which seriously affects the molding efficiency of the injection molded part. Utility Model Content

[0004] The utility model aims to provide an injection molded part movable mold with a side lift mechanism, which can quickly separate the injection molded part for automobile parts from the movable mold, and the raised section on the back of the injection molded part will not be damaged afterwards.

[0005] In order to achieve the purpose of the above utility model, a movable mold for injection molding with a side ejector mechanism is provided, comprising a movable mold base, a movable mold core and an ejector mechanism;

[0006] The movable mold core is fixed on the inner surface of the movable mold base, and the inner surface of the movable mold core is provided with a movable mold cavity, the movable mold cavity is adapted to the shape of the product to be molded, and the movable mold cavity and the fixed mold cavity together constitute a shape cavity for molding the injection molded part;

[0007] A cavity is left between the bottom of the movable mold seat and the movable mold core, and a plurality of guide pillars are fixed in the cavity;

[0008] The ejector mechanism comprises a support plate and a plurality of ejectors;

[0009] The support plate is slidably sleeved on the guide column, and the end of the piston rod of the external hydraulic device passes through the movable mold base and is connected to the support plate;

[0010] One end of a plurality of ejectors is fixed on a side of the support plate facing the injection molded part;

[0011] At least one side top mechanism is provided on one side of the movable mold base.

[0012] The side lift mechanism comprises a second oil cylinder, a support seat, a sliding block and an inclined lift bar;

[0013] The second oil cylinder is arranged on the movable mold base, and the piston rod of the second oil cylinder is vertically pointed to the side of the movable mold core;

[0014] A positioning block is fixed on the movable mold core at a position facing the second oil cylinder, and a step portion is horizontally provided on the inner surface of the positioning block;

[0015] The support seat is fixed to the end of the piston rod of the second oil cylinder;

[0016] The slider slides through the positioning block on the movable mold core, and the upper surface of the slider is horizontally inclined and provided with a slide groove;

[0017] The lower surface of the tail of the inclined top bar has a protrusion, and the inclined top bar is placed on the step portion on the positioning block through the protrusion, and the inclined top bar is located in the sliding groove, and the top of the inclined top bar has a contoured portion.

[0018] Preferably, a spring is sleeved on the guide column between the support plate and the movable mold core.

[0019] Preferably, the number of the side lift mechanisms is two.

[0020] Preferably, a limiting column is provided on the inner surface of the movable mold base at a position corresponding to the limiting hole.

[0021] Preferably, a cooling water pipeline is provided in the movable mold base.

[0022] Compared with the prior art, the utility model has the following advantages for the injection mold with a side top mechanism:

[0023] (1) By arranging a side ejector mechanism on the movable mold, after the movable mold and the fixed mold are separated, the injection molded product with the protruding structure can be quickly separated from the inclined ejector pin, and then the injection molded product can be separated from the movable mold by the ejector pin mechanism, thereby improving the production efficiency of the product;

[0024] (2) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an injection molded part for automotive accessories in the background technology;

[0026] Figure 2 Schematic diagram of the structure of the movable module in this embodiment;

[0027] Figure 3 Schematic diagram of the internal structure of the moving module in this embodiment;

[0028] Figure 4 Schematic diagram of the structure of the side lift mechanism in this embodiment;

[0029] Figure 5 is a working principle diagram of the side lift mechanism in this embodiment;

[0030] Figure 6 It is a schematic diagram of the structure in which the inclined lift bar in this embodiment is connected to the step portion on the positioning block. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figure 2 As shown, the present embodiment of a movable mold for injection molding with a side ejector mechanism includes a movable mold base 1, a movable mold core 2 and an ejector mechanism.

[0033] The movable mold core 2 is fixed on the inner surface of the movable mold base 1, and a movable mold cavity 3 is provided on the inner surface of the movable mold core 2. The movable mold cavity 3 is adapted to the shape of the product to be formed, and the movable mold cavity 3 and the fixed mold cavity on the fixed mold core together constitute a shape cavity for molding the injection molded part.

[0034] like Figure 3 As shown, a cavity is left between the bottom of the movable mold base 1 and the movable mold core 2, and a plurality of guide columns 6 are fixed in the cavity; the ejector mechanism includes a support plate 7 and a plurality of ejectors 8; the support plate 7 is slidably sleeved on the guide column 6, and the end of the piston rod of the external hydraulic device passes through the movable mold base 1 and is connected to the support plate 7; one end of the plurality of ejectors 8 is fixed on the side of the support plate 7 facing the injection molded part; with such an arrangement, after the injection molded part is formed, the movable mold part is separated from the fixed mold part, the product is bonded to the movable mold core 2, and the product in the movable mold cavity can be ejected by the ejector 8.

[0035] In this embodiment, if Figure 3 As shown, a spring 9 is sleeved on the guide column 6 between the support plate 7 and the movable mold core 2. After the ejector pin 8 ejects the product, the elastic force of the spring 9 can reset the support plate 7.

[0036] In this embodiment, if Figure 2 and Figure 4 As shown, at least one side push mechanism is provided on one side of the movable mold base 1, and the side push mechanism includes a second oil cylinder 4, a support seat 10, a slide block 11 and an inclined push bar 12; the second oil cylinder 4 is arranged on the movable mold base 1, and the piston rod of the second oil cylinder 4 is vertically pointed to the side of the movable mold core 2; Figure 6 As shown, a positioning block 13 is fixed on the movable mold core 2 at a position facing the second oil cylinder 4, and a step portion 14 is horizontally provided on the inner surface of the positioning block 13; the support seat 10 is fixed to the end of the piston rod of the second oil cylinder 4; the slider 11 slides through the positioning block 13 on the movable mold core 2, and a slide groove is horizontally inclined on the upper surface of the slider 11; Figure 6As shown, the lower surface of the tail of the inclined ejector bar 12 has a protrusion 15, and the inclined ejector bar 12 is placed on the step portion 14 on the positioning block 13 through the protrusion 15, and the inclined ejector bar 12 is located in the slide groove, and the top of the inclined ejector bar 12 has a contoured portion; with this arrangement, after the injection molding, as the movable mold moves, the second oil cylinder 4 is started, and the slider 11 contracts backward with the piston rod of the second oil cylinder 4. Under the limiting action of the slide groove, the inclined ejector bar 12 slides on the step portion 14 of the positioning block 13 and is separated from the raised structure on the product, further improving the separation efficiency, while ensuring that when the ejector mechanism ejects the product, no interference occurs, resulting in damage to the molded product.

[0037] In this embodiment, the number of the side lift mechanisms is two.

[0038] In this embodiment, a limiting column 5 is provided on the inner surface of the movable mold base 1 at a position corresponding to the limiting hole 7, and the limiting column 5 is adapted to the limiting hole on the fixed mold part; with such a configuration, when the movable mold part and the fixed mold part are molded together, it is ensured that the movable mold cavity 3 and the fixed mold cavity will not be misaligned, thereby ensuring that the product after molding is qualified.

[0039] In this embodiment, a cooling water pipeline is provided in the movable mold base 1 to facilitate cooling of the injection molded parts after molding.

[0040] In this embodiment, the outer surface of the movable mold base 1 has a plurality of weight-reducing holes to reduce the weight.

[0041] like Figure 5 As shown, the movable mold moves backward under the drive of the driving device in the injection molding equipment and is separated from the fixed mold, and the product moves backward with the movable mold; the second oil cylinder 4 is started, and the slide block 11 shrinks backward along with the piston rod of the second oil cylinder 4, and under the limiting action of the slide groove, the inclined ejector bar 12 slides on the step portion 14 of the positioning block 13 and is separated from the raised structure on the product, further improving the separation efficiency and ensuring that no interference occurs when the ejector mechanism ejects the product, resulting in damage to the molded product; finally, the ejector mechanism is started, and the ejector 8 ejects the product 16 in the movable mold cavity.

[0042] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A movable mold for injection molding with a side ejection mechanism, characterized in that: It includes a movable mold base, a movable mold core and an ejector mechanism; The movable mold core is fixed on the inner surface of the movable mold base, and the inner surface of the movable mold core is provided with a movable mold cavity, the movable mold cavity is adapted to the shape of the product to be molded, and the movable mold cavity and the fixed mold cavity together constitute a shape cavity for molding the injection molded part; A cavity is left between the bottom of the movable mold seat and the movable mold core, and a plurality of guide pillars are fixed in the cavity; The ejector mechanism comprises a support plate and a plurality of ejectors; The support plate is slidably sleeved on the guide column, and the end of the piston rod of the external hydraulic device passes through the movable mold base and is connected to the support plate; One end of a plurality of ejectors is fixed on a side of the support plate facing the injection molded part; At least one side top mechanism is provided on one side of the movable mold base. The side lift mechanism comprises a second oil cylinder, a support seat, a sliding block and an inclined lift bar; The second oil cylinder is arranged on the movable mold base, and the piston rod of the second oil cylinder is vertically pointed to the side of the movable mold core; A positioning block is fixed on the movable mold core at a position facing the second oil cylinder, and a step portion is horizontally provided on the inner surface of the positioning block; The support seat is fixed to the end of the piston rod of the second oil cylinder; The slider slides through the positioning block on the movable mold core, and the upper surface of the slider is horizontally inclined and provided with a slide groove; The lower surface of the tail of the inclined top bar has a protrusion, and the inclined top bar is placed on the step portion on the positioning block through the protrusion, and the inclined top bar is located in the sliding groove, and the top of the inclined top bar has a contoured portion.

2. A movable mold for injection molding with a side ejector mechanism as claimed in claim 1, characterized in that: A spring is sleeved on the guide column between the support plate and the movable mold core.

3. A movable mold for injection molding with a side ejector mechanism as claimed in claim 1 or 2, characterized in that: The number of the side lift mechanisms is two.

4. The movable mold for injection molding with a side ejector mechanism as claimed in claim 1, characterized in that: A limiting column is provided at a position corresponding to the limiting hole on the inner surface of the movable mold seat.

5. A movable mold for injection molding with a side ejector mechanism as claimed in claim 1, 2 or 4, characterized in that: A cooling water pipeline is arranged in the movable mold base.

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