Injection mold structure capable of avoiding interference strain

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold structure capable of avoiding interference strain, which comprises an upper fixing plate, a lower fixing plate is arranged right below the upper fixing plate, a sprue bush for feeding is fixedly mounted at the center of the top surface of the upper fixing plate in a penetrating manner, and the sprue bush is vertically arranged; and an upper end opening of the sprue bush is located in a containing hole in the top of the upper fixing plate, a base plate is installed at the bottom of the upper fixing plate, and two partition plates are arranged on the top face of the lower fixing plate. Through the design of the adjustable driving mechanism, after injection molding, the oil cylinder firstly drives the wedging block and the retaining locking block to return outwards, then the core-pulling sliding block is pulled out to achieve the purpose of adjusting the core-pulling sliding block, and then the inclined guide block smoothly guides the sliding block to be separated from a product, so that accurate control of a mold is conveniently realized, and complex core-pulling requirements are effectively met; meanwhile, due to the design, the adjusting driving mechanism can flexibly cope with the shape and size changes of various products.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is injection mold structure of avoiding interference and tearing. BACKGROUND

[0002] Now the product on injection mold involves upside down buckle insertion, and the conventional core-pulling is carried out first in the core-pulling and core-inserting of the slide block, and the core-pulling of the other three directions is sequentially carried out, but the design is more complex, and the product has upside down buckle insertion, and there is interference in mold opening, which is easy to tear the product and cannot realize smooth mold opening.

[0003] In order to avoid the above problems, the utility model provides a structure optimization scheme, which can ensure smooth mold action, and the structure can make the slide blocks move synchronously in the core-pulling and core-inserting processes and there is no interference between them, effectively avoiding the product tearing problem. In addition, the structure also simplifies the mold design, reduces the production cost, improves the production efficiency and product quality. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an injection mold structure which can avoid interference and tearing, so as to solve the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: an injection mold structure which can avoid interference and tearing, comprising an upper fixed plate, a lower fixed plate is arranged below the upper fixed plate, a sprue bush for feeding is fixedly penetrated and installed at the center of the top surface of the upper fixed plate, the sprue bush is vertically arranged, the upper end of the sprue bush is located in the placement hole at the top of the upper fixed plate, a backing plate is installed at the bottom of the upper fixed plate, two spacer plates are arranged on the top surface of the lower fixed plate, two needle plates are arranged between the two spacer plates, a needle is arranged on the needle plate, a positioning guide column is arranged between the top of the two spacer plates and the bottom of the upper fixed plate, a male mold plate and a female mold plate are arranged on the positioning guide column, a front mold and a rear mold are arranged in the male mold plate and the female mold plate.

[0006] Preferably, the front mold and the rear mold are provided with a core cavity, the core cavity is provided with a mold core, and the mold core is provided with an injection molded product, and the product has an upside down buckle insertion structure.

[0007] Preferably, the product is provided with a slide block on three sides, the slide block is provided with a slide hole, and the slide hole is provided with an inclined guide block, which plays a guiding and positioning role.

[0008] Preferably, the other side of the product is provided with an adjustable driving mechanism, the adjustable driving mechanism comprises a cylinder mounting seat mounted on one side of the male die plate, a cylinder is mounted on the surface of the cylinder mounting seat, a insert connecting shaft is connected to the output end of the cylinder, a clamping block is fixedly connected to the outer wall of the insert connecting shaft, retreat locking blocks are slidably connected to the top and bottom of the clamping block, and the outer wall of the retreat locking blocks is provided with a core pulling slider mounted on the male die plate.

[0009] The utility model provides a kind of injection mould structure of interference is avoided to pull and hurt.

[0010] (1), the utility model discloses a design of adjustable driving mechanism, after injection molding, clamping block, retreat locking block is driven by cylinder first and then retreats outward, then core pulling slider is pulled out, so as to achieve the purpose of adjustable core pulling slider, then be guided by inclined guide block to make slider separate from product, it is convenient to realize the accurate control of mould, effectively cope with complex core pulling demand;Meanwhile, the design makes that adjustable driving mechanism can flexibly cope with the shape and size change of various products.

[0011] (2), the utility model discloses a design of this structure, mainly realizes the order of adjustable slider action in advance, so that complex product can make the structure of mould realize complete product molding and demoulding structure. SHEET

[0012] Fig. 1 It is the overall structure perspective of the utility model;

[0013] Fig. 2 It is the front die holder structure plan view of the utility model;

[0014] Fig. 3 It is the adjustable driving mechanism view of the utility model.

[0015] In the drawing: upper fixed plate 21, lower fixed plate 22, male die plate 23, female die plate 24, spacer plate 25, thimble plate 26, front die holder 27, rear die holder 28, pad 29, mould core 210, product 211, slider 31, inclined guide block 32, cylinder 33, cylinder mounting seat 34, core pulling slider 35, clamping block 36, retreat locking block 37. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0018] A preferred embodiment of the injection mold structure for avoiding interference and tearing provided by this utility model is, for example... Figs. 1-3 As shown: An injection mold structure to avoid interference and tearing includes an upper fixed plate 21, with a lower fixed plate 22 directly below it. A sprue sleeve for feeding is fixedly and through the center of the top surface of the upper fixed plate 21, and the sprue sleeve is vertically arranged. The upper end of the sprue sleeve is located in the placement hole at the top of the upper fixed plate 21. A pad plate 29 is installed at the bottom of the upper fixed plate 21. Two partition plates 25 are provided on the top surface of the lower fixed plate 22, and two ejector plates 26 are provided between the two partition plates 25. Ejector plates 26 are provided with ejector pins. A positioning guide post is provided between the top of the two partition plates 25 and the bottom of the upper fixed plate 21, and a male mold plate 23 and a female mold plate 24 are provided on the positioning guide post. A front mold liner 27 and a rear mold liner 28 are provided between the male mold plate 23 and the female mold plate 24.

[0019] The front mold liner 27 and the rear mold liner 28 have built-in core cavities, and the core cavity contains a mold core 210. The mold core 210 is fitted with an injection-molded product 211, which has an undercut insertion structure.

[0020] The product 211 is provided with sliders 31 on three sides. The sliders 31 have sliding holes, and inclined guide blocks 32 are inserted into the sliding holes to guide and position the product. The design of the inclined guide blocks 32 allows the sliders 31 to slide smoothly during the injection molding process, reducing friction and improving the molding accuracy of the product 211.

[0021] An adjustable drive mechanism is provided on the other side of the product 211. This adjustable drive mechanism includes a cylinder mounting base 34 installed on one side of the male template 23. A cylinder 33 is mounted on the surface of the cylinder mounting base 34. The output end of the cylinder 33 is connected to an insert connecting shaft. A clamping block 36 is fixedly connected to the outer wall of the insert connecting shaft. A backstop locking block 37 is slidably connected to the top and bottom of the clamping block 36, and a core-pulling slider 35 installed on the male template 23 is provided on the outer wall of the backstop locking block 37. The driving of the cylinder 33 allows the adjustable drive mechanism to flexibly meet the needs of products with different shapes, enhancing the applicability of the mold. Through this design, not only is the problem of interference and tearing avoided, but production efficiency and product quality are also greatly improved.

[0022] Through the design of the clamping block 36 and the retreat locking block 37, the stability and safety of the mold during opening and closing are ensured, meanwhile, the exquisite design of the core pulling slider 35 makes the product 211 more smooth during demolding, effectively reducing the defective rate of the product.

[0023] In use, the other three direction sliders 31 are closed first, then the oil cylinder 33 is pressed inwards through the clamping block 36 and the retreat locking block 37, injection molding is carried out, after injection molding, the oil cylinder 33 drives the clamping block 36 and the retreat locking block 37 to retreat outwards first, then the core pulling slider 35 is pulled out, so that the adjustable core pulling slider 35 is achieved, then the inclined guide block 32 smoothly guides the slider 31 to separate from the product 211, (i.e. the other three direction sliders are pulled out), then the product is taken out through the ejector rod.

[0024] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. An injection mold structure for avoiding interference strain, comprising an upper fixed plate (21) provided with a lower fixed plate (22) directly below, characterized in that, The top surface center of the upper fixed plate (21) is fixed with a through installation of a feeding nozzle, which is vertically arranged, and the upper end of the nozzle is located in the placement hole on the top of the upper fixed plate (21), the bottom of the upper fixed plate (21) is provided with a backing plate (29), the top surface of the lower fixed plate (22) is provided with two spacer plates (25), two needle plates (26) are arranged between the two spacer plates (25), the needle plate (26) is provided with a needle, a positioning guide column is arranged between the top of the two spacer plates (25) and the bottom of the upper fixed plate (21), and a male mold plate (23) and a female mold plate (24) are arranged on the positioning guide column, the male mold plate (23) and the female mold plate (24) are provided with a front mold (27) and a rear mold (28) inside; The front mold (27) and the rear mold (28) are provided with a core cavity, the core cavity is provided with a mold core (210), the mold core (210) is provided with an injection molded product (211), the product (211) has a reverse buckle insertion structure, the other side of the product (211) is provided with an adjustable driving mechanism, the adjustable driving mechanism includes an oil cylinder mounting seat (34) mounted on one side of the male mold plate (23), the surface of the oil cylinder mounting seat (34) is provided with an oil cylinder (33), the output end of the oil cylinder (33) is connected with an insert connecting shaft, the outer wall of the insert connecting shaft is fixedly connected with a clamping block (36), the top and bottom of the clamping block (36) are slidably connected with a retreat locking block (37), and the outer wall of the retreat locking block (37) is provided with a core pulling slider (35) mounted on the male mold plate (23).

2. The injection mold structure according to claim 1, wherein: The three sides of the product (211) are provided with a sliding block (31), the sliding block (31) is provided with a sliding hole, and the sliding hole is provided with an inclined guide block (32) arranged therein, which plays a guiding and positioning role.

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