Demolding assembly for injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a demolding assembly for an injection mold, which comprises a lower mold of the injection mold, the lower mold comprises a lower mold plate, a plurality of mold cores are mounted on the lower mold plate, a fixing plate for fixing the lower end parts of the mold cores is arranged on the lower side of the lower mold plate, and guide columns are fixed on the lower mold plate close to four corners. A base plate is arranged on the lower side of the fixed plate, a bottom plate is arranged below the base plate, a left foot pad and a right foot pad are fixed between the base plate and the bottom plate, a movable plate is arranged between the left foot pad and the right foot pad, and a baffle is fixed on the lower side of the movable plate. According to the utility model, after the injection mold finishes injection molding of a product, the upper mold and the lower mold of the injection mold are separated, at the moment, the push rod which is separated from the pressure of the upper mold does not apply pressure to the baffle, the baffle and the movable plate move upwards under the ejection of the spring, and the movable plate moving upwards drives the ejector rod to move upwards to eject the product; therefore, demolding of the product is more convenient and quicker.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, especially a demoulding assembly for injection mould. BACKGROUND

[0002] As a kind of mould, the working mode of injection mould is that heated molten material is injected into mould cavity by high pressure, and after cooling and solidification, shaped product is obtained, and the product after shaping needs material ejecting mechanism to be ejected from mould cavity, to complete automatic material ejection.

[0003] When the existing injection mould is demoulded, the product is ejected from mould cavity by the material ejecting rod on the mould driven by the hydraulic cylinder on the injection molding machine, and this material ejecting mode needs to rely on the hydraulic cylinder on the injection molding machine, and the corresponding structure needs to be set to cooperate with the material ejecting drive of hydraulic cylinder, and the material ejecting control of the whole material ejecting mechanism has certain inconvenience. UTILITY MODEL CONTENTS

[0004] The utility model discloses to solve the problem that the material ejecting control of the whole material ejecting mechanism exists certain inconvenience when injection mould is demoulded to product, and a demoulding assembly for injection mould is provided.

[0005] In order to solve the above technical problem, the utility model is realized through the following technical scheme: a demoulding assembly for injection mould, including the lower mould of injection mould, the lower mould includes lower mould plate, a plurality of core are installed on lower mould plate, and the lower side of lower mould plate is provided with the fixed plate that fixes the lower end of core, and the guide column is also fixed in the vicinity of four corner positions of lower mould plate, the lower side of fixed plate is provided with the backing plate, the bottom plate is provided below the backing plate, and the left and right two pad feet are fixed between the backing plate and bottom plate, the movable plate is set up between the left and right two pad feet, the lower side of movable plate is fixed with the baffle, and the ejector rod extending to the upper surface of core is fixed on the movable plate, a plurality of springs are set between the baffle and bottom plate, and the left and right two push rods are vertically inserted in the vicinity of front and back two side edge positions of lower mould plate, and the lower end of push rod is fixedly connected with baffle.

[0006] As preferred scheme, the upper surface of movable plate is provided with the fixed hole that is positioned and installed to the lower end of ejector rod, and the lower side of movable plate is provided with the hanging groove corresponding to fixed hole, and the positioning groove is formed on one side of hanging groove.

[0007] As preferred scheme, the upper surface of movable plate is provided with the let hole in the vicinity of front and back two side positions, and the left and right two sides of movable plate are provided with the guide clamping groove, and the recess of same as guide clamping groove is formed on the left and right two sides of baffle.

[0008] As preferred scheme, the upper end of ejector rod is provided with the profile, and the lower end of ejector rod is fixed with the hanging platform, and the positioning boss is fixed on one side of hanging platform.

[0009] As a preferred solution, the lower end of the push rod is fixed with a threaded head, the lower end of the threaded head is fixedly connected with the baffle through the accommodation hole.

[0010] As a preferred solution, the inner side of the foot pad is fixed with a guide boss matched with the guide slot, and the upper surface of the foot pad is provided with a through hole near the front and rear ends.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] After the product is injection molded, the upper die and the lower die of the injection mold are separated, at this time, the push rod separated from the pressure of the upper die no longer presses the baffle, and the baffle and the movable plate move upward under the pressing of the spring, the movable plate moving upward drives the ejector rod to move upward and eject the product, so that the demolding of the product is more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the overall structure schematic view of the utility model;

[0014] Figure 2 is the movable plate schematic view of the utility model;

[0015] Figure 3 is the ejector rod schematic view of the utility model;

[0016] Figure 4 is the push rod schematic view of the utility model;

[0017] Figure 5 is the foot pad schematic view of the utility model.

[0018] In the drawing: 1, bottom plate; 2, foot pad; 21, through hole; 22, guide boss; 3, pad plate; 4, fixed plate; 5, lower die plate; 6, guide column; 7, core; 8, push rod; 81, threaded head; 9, movable plate; 91, accommodation hole; 92, fixed hole; 93, positioning groove; 94, hanging groove; 95, guide slot; 10, baffle; 11, spring; 12, ejector rod; 121, profile; 122, positioning boss; 123, hanging table. DETAILED DESCRIPTION

[0019] As Figure 1As shown, a demolding assembly for injection mold, including the lower mold of injection mold, the lower mold includes the lower mold plate 5, the lower mold plate 5 is installed with a plurality of cores 7, and the lower side of the lower mold plate 5 is provided with a fixed plate 4 for fixing the lower end of the core 7, and the lower mold plate 5 is also fixed with a guide column 6 near the four corners, the lower side of the fixed plate 4 is provided with a backing plate 3, the lower side of the backing plate 3 is provided with a bottom plate 1, and the left and right two feet 2 are fixed between the backing plate 3 and the bottom plate 1, the movable plate 9 is arranged between the left and right two feet 2, the lower side of the movable plate 9 is fixed with a baffle 10, and the movable plate 9 is fixed with a top rod 12 extending to the upper surface of the core 7, a plurality of springs 11 are arranged between the baffle 10 and the bottom plate 1, and the lower mold plate 5 is vertically inserted with the left and right two push rods 8 near the front and rear side edge positions, and the lower end of the push rod 8 is fixedly connected with the baffle 10. After the injection mold is completed, the upper mold and the lower mold of the injection mold are separated, at this time the push rod 8 separated from the pressure of the upper mold no longer presses the baffle 10, and the baffle 10 and the movable plate 9 move upward under the tension of the spring 11, the movable plate 9 moving upward drives the top rod 12 to move upward to eject the product, so that the demolding of the product is more convenient and fast.

[0020] As Figure 2 shown, the upper surface of the movable plate 9 is provided with a fixed hole 92 for positioning and installing the lower end of the top rod 12, and the lower side of the movable plate 9 is provided with a hanging groove 94 corresponding to the fixed hole 92, and the hanging groove 94 is provided with a positioning groove 93 on one side. The movable plate 9 is fixedly installed with the top rod 12 by the fixed hole 92 and the hanging groove 94, and the positioning groove 93 is used for positioning when the top rod 12 is installed.

[0021] The upper surface of the movable plate 9 is provided with a let hole 91 near the front and rear positions, and the movable plate 9 is provided with the let hole 91 for the insertion of the push rod 8 and the baffle 10 when they are connected;

[0022] The left and right sides of the movable plate 9 are provided with guide clamping grooves 95, and the movable plate 9 is guided and matched with the left and right two feet 2 by the guide clamping grooves 95, and the left and right sides of the baffle 10 are also provided with grooves same as the guide clamping grooves 95.

[0023] As Figure 3 shown, the upper end of the top rod 12 is provided with a profile 121 for cooperating with the core 7 to form a shape;

[0024] The lower end of the top rod 12 is fixedly provided with a hanging table 123, and the hanging table 123 is fixedly provided with a positioning boss 122 on one side. The top rod 12 is clamped in the hanging groove 94 by the hanging table 123, and is positioned in the positioning groove 93 by the positioning boss 122, so as to avoid the profile of the upper end of the top rod 12 from not matching the profile of the core 7.

[0025] As Figure 4As shown, the lower end of the push rod 8 is fixed with a threaded head 81. The lower end of the threaded head 81 passes through the relief hole 91 and is fixedly connected to the baffle 10. The push rod 8 is fixedly connected to the baffle 10 through the relief hole 91 via the threaded head 81, so that the push rod 8 can push the baffle 10 to move downward.

[0026] like Figure 5 As shown, a guide boss 22 is fixed on the inner side of the pad 2 and cooperates with the guide slot 95. The pad 2 guides the movable plate 9 to move up and down through the guide boss 22. Through holes 21 are opened on the upper surface of the pad 2 near the front and rear ends for threading screws to fix the pad 2 and the pad plate 3 together.

[0027] In this embodiment, during the molding of plastic products, the upper and lower molds of the injection mold are driven by the injection molding machine to close. During mold closing, the upper mold presses the push rod 8 to push the baffle 10 and the movable plate 9 down, thereby driving the ejector rod 12 down until the mold is fully closed. At this time, the surface 121 at the upper end of the ejector rod 12 matches the surface of the core 7, and injection molding can be performed. After the injection molding of the product is completed, the upper and lower molds of the injection mold separate. At this time, the push rod 8, which is freed from the pressure of the upper mold, no longer applies pressure to the baffle 10. Under the pressure of the spring 11, the baffle 10 and the movable plate 9 move upward. The upward-moving movable plate 9 drives the ejector rod 12 to move upward and eject the product, thereby completing the demolding of the product.

[0028] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A demolding assembly for an injection mold, comprising a lower mold of the injection mold, the lower mold comprising a lower mold plate (5) on which a plurality of cores (7) are mounted, and a fixing plate (4) provided on the lower side of the lower mold plate (5) to fix the lower end portions of the cores (7), and a guide pillar (6) is further fixed to the lower mold plate (5) near the four corners, and a backing plate (3) is provided on the lower side of the fixing plate (4), characterized in that: The lower side of the movable plate (9) is fixed with a baffle (10), and the movable plate (9) is fixed with a top rod (12) extending to the upper surface of the core (7), a plurality of springs (11) are arranged between the baffle (10) and the bottom plate (1), the lower die plate (5) is vertically inserted with two left and right push rods (8) near the front and rear edges, and the lower end of the push rod (8) is fixedly connected with the baffle (10).

2. A demolding assembly for injection molds according to claim 1, characterized in that: The upper surface of the movable plate (9) is provided with a fixed hole (92) for positioning and installing the lower end of the top rod (12), and the lower side of the movable plate (9) is provided with a hanging groove (94) corresponding to the fixed hole (92), and the hanging groove (94) is provided with a positioning groove (93) on one side.

3. A demolding assembly for injection molds according to claim 2, characterized in that: The upper surface of the movable plate (9) is provided with a let hole (91) near the front and rear positions, and the left and right sides of the movable plate (9) are provided with a guide clamping groove (95), and the left and right sides of the baffle (10) are provided with a groove same with the guide clamping groove (95).

4. A demolding assembly for injection molds according to claim 2, characterized in that: The upper end of the top rod (12) is provided with a profile (121), and the lower end of the top rod (12) is fixed with a hanging table (123), and the hanging table (123) is fixed with a positioning boss (122) on one side.

5. A demolding assembly for injection molds according to claim 3, characterized in that: The lower end of the push rod (8) is fixed with a threaded head (81), and the lower end of the threaded head (81) is fixedly connected with the baffle (10) through the let hole (91).

6. A demolding assembly for injection molds according to claim 3, characterized in that: The inner side of the pad foot (2) is fixed with a guide boss (22) guided matched with the guide clamping groove (95), and the upper surface of the pad foot (2) is provided with a through hole (21) near the front and rear ends.

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