Sprue twisting-off device for injection mold

Abstract

The utility model discloses an injection mold sprue twist-off device, which relates to the technical field of injection molds and comprises a mold body, an injection port, a slider and a cylinder, the injection port is embedded in the top of the mold body, an injection pipe is mounted at the bottom of the injection port, and the injection pipe is embedded in the mold body. One end of the bottom of the injection molding pipe communicates with an inner cavity of the mold body, an injection molding product enters the mold cavity through the injection molding opening and the injection molding pipe to be formed, after the product is shaped, the air cylinder drives the sliding block to slide, then the sliding block can drive the rack to slide, and therefore the rack can drive the injection molding opening to rotate; the injection molding opening can drive the internal pouring gate to rotate while rotating, then the internal pouring gate can be twisted off, the protruding structures are annularly distributed on the injection molding opening and the inner wall of the injection molding pipe, then the protruding structures can be embedded into the pouring gate, and then the injection molding opening can stably drive the pouring gate to rotate and be twisted off.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a kind of injection mold gate twist breaking device. BACKGROUND

[0002] Plastic products are by injecting material into mold, so there is gate hole in mold, and the product formed will have gate, which needs to be removed. After searching, the patent with patent publication number CN201389955Y discloses a large gate twist breaking device for injection mold, which uses the way of gate sleeve twisting to make the gate close to twist breaking, so that the gate can be pulled out of the gate sleeve when the mold is opened, and the gate can be easily pulled down after demolding, saving time and effort and improving production efficiency. However, the surface structure of the gate sleeve of the device is smooth, and when the gate sleeve and the gate are loose, the gate sleeve cannot drive the gate to rotate for twist breaking. SUMMARY

[0003] To overcome the deficiencies of the prior art, the utility model provides a kind of injection mold gate twist breaking device, solve the problem that the existing gate sleeve and the gate cannot be stably connected in the background art, when the gate sleeve and the gate are loose, the gate sleeve cannot drive the gate to rotate for twist breaking.

[0004] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of injection mold gate twist breaking device, including mold main body, injection port, sliding block and cylinder, the injection port is embedded on the top of the mold main body, the injection pipe is installed at the bottom of the injection port, the injection pipe is embedded in the mold main body, the bottom of the injection pipe is communicated with the cavity in the mold main body, the outer side of the injection port is provided with mesh teeth, the outer side of the injection port is engaged with the rack through mesh teeth, and the mesh teeth on the outer side of the injection port can slide in contact with the surface of the rack, the rack is welded on one side of the sliding block, one end of the sliding block is sleeved on the outside of the telescopic end of the cylinder, the cylinder is installed on the top of the mold main body by screw, and the bottom of the injection port is provided with spring.

[0005] Preferably, a clamping block is provided between the injection port and the mold main body, one end surface of the clamping block is in a slope surface structure, a hole groove is provided in the clamping block, and the hole groove in the clamping block is in sliding contact with the outer wall of the second sliding rod, a convex structure is provided at one end of the top of the second sliding rod, and one end of the bottom of the second sliding rod is welded to the top of the mold main body. By moving the clamping block to the bottom of the injection port, the bottom of the injection port can be supported.

[0006] Preferably, the injection port top is a bucket-shaped structure, the injection port interior communicates with the injection pipe interior, the injection port and the injection pipe inner wall are provided with strip-shaped convex structures, and the strip-shaped convex structures are annularly and equidistantly distributed, wherein a channel distance is reserved in the mold interior between the injection pipe and the product to avoid direct torsional breakage and damage to the product surface.

[0007] Preferably, the injection port bottom one end outer wall is in sliding contact with the injection pipe top one end inner wall, the injection port bottom one end outer wall is annularly and equidistantly distributed with convex structures, and the injection pipe top one end inner side is provided with grooves corresponding to the injection port outer wall convex structures, and the injection pipe bottom one end is a conical structure, so that the injection port bottom can slide up and down on the injection pipe top one end.

[0008] Preferably, the sliding block is internally provided with two hole grooves, and the hole groove inner wall is in sliding contact with the first sliding rod outer wall, the first sliding rod top one end outer wall is provided with a convex structure, and the first sliding rod bottom one end is welded with the mold main body top.

[0009] The utility model provides a kind of injection mould gate twist break device. With following beneficial effects:

[0010] (1), the injection mould gate twist break device, injection product is formed into the mold cavity interior by injection port and injection pipe, product is shaped, and sliding is carried out by cylinder driving sliding block, and then sliding block can drive rack to slide, so that rack can drive injection port to rotate, injection port can drive internal gate to rotate simultaneously, and then internal gate can be twisted, and convex structure is annularly distributed on the inner wall of injection port and injection pipe, so that convex structure can be embedded into gate interior, so that injection port can stably drive gate to rotate and twist.

[0011] (2), the injection mould gate twist break device, when gate is twisted and left in injection port and injection pipe, sliding block is made, so that one end of block can be removed from the bottom of injection port, and then by pressing injection port, so that one end of gate top in injection port interior can be exposed, so that twisted gate is pulled out.

[0012] So as to solve the problem that existing gate sleeve and gate cannot be stably connected, when gate sleeve and gate are loose, gate sleeve cannot drive gate to rotate and twist. BRIEF DESCRIPTION OF DRAWINGS

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

[0014] Figure 2 It is sliding block sliding schematic view of the utility model;

[0015] Figure 3 It is injection pipe structure schematic view of the utility model;

[0016] Figure 4 It is spring structure schematic view of the utility model;

[0017] Figure 5 It is injection port structure schematic view of the utility model.

[0018] In the figure, 1, mould main body;2, injection port;3, rack;4, sliding block;5, first sliding rod;6, air cylinder;7, spring;8, injection pipe;9, clamping block;10, second sliding rod. Specific implementation

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] Please refer to Figures 1-5The utility model embodiment provides a kind of technical scheme: a kind of injection mold gate twist break device, including mould main body 1, injection port 2, slider 4 and cylinder 6, injection port 2 is embedded in the top of mould main body 1, injection pipe 8 is installed at the bottom of injection port 2, injection pipe 8 is embedded in the inside of mould main body 1, and the bottom one end of injection pipe 8 is communicated with the inside cavity of mould main body 1, and the outside of injection port 2 is provided with mesh teeth, and the outside of injection port 2 is engaged with rack 3 by mesh teeth, and one side of rack 3 is welded with slider 4, and one end of slider 4 is sleeved in the outside of the telescopic end of cylinder 6, and cylinder 6 is installed on the top of mould main body 1 by screw, and the bottom of injection port 2 is provided with spring 7, and the top of injection port 2 is in the shape of a bucket, and the inside of injection port 2 is communicated with the inside of injection pipe 8, and the inside wall of injection port 2 and injection pipe 8 is provided with strip convex structure, and strip convex structure is in the shape of a ring and is distributed at equal intervals, two hole grooves are set in the inside of slider 4, and the hole groove inner wall is in sliding contact with the outer wall of first sliding rod 5, and the top one end of first sliding rod 5 is provided with convex structure, and the bottom one end of first sliding rod 5 is welded with the top of mould main body 1, and injection product is formed into mould cavity inside by injection port 2 and injection pipe 8, after product shaping, slider 4 is driven to slide by cylinder 6, and then slider 4 can drive rack 3 to slide, so that rack 3 can drive injection port 2 to rotate, and injection port 2 can drive the gate inside to rotate while rotating, so that the gate inside can be twisted off, and the convex structure is distributed in the shape of a ring on the inner wall of injection port 2 and injection pipe 8, so that the convex structure can be embedded into the gate inside, so that injection port 2 can stably drive the gate to rotate and twist off.

[0022] Embodiment 2:

[0023] The utility model embodiment provides a kind of technical scheme: a kind of injection mold gate twist break device, and the card block 9 is arranged between injection port 2 and mould main body 1, and the one end surface of card block 9 is in the shape of a slope, and the hole groove is set in the inside of card block 9, and the hole groove in the inside of card block 9 is in sliding contact with the outer wall of second sliding rod 10, and the top one end of second sliding rod 10 is provided with convex structure, and the bottom one end of second sliding rod 10 is welded with the top of mould main body 1, and the bottom one end outer wall of injection port 2 is in sliding contact with the top one end inner wall of injection pipe 8, and the bottom one end outer wall of injection port 2 is in the shape of a ring and is distributed at equal intervals with convex structure, and the inside of the top one end of injection pipe 8 is provided with recess corresponding with the convex structure of the outer wall of injection port 2, and the bottom one end of injection pipe 8 is in the shape of a cone, when the gate is twisted off and left in the inside of injection port 2 and injection pipe 8, by sliding card block 9, the one end of card block 9 can be removed from the bottom of injection port 2, so that the top one end of the gate inside injection port 2 can be exposed by pressing injection port 2, so that the twisted-off gate can be pulled out conveniently.

[0024] Working principle: during the molding process, the injection molding product first enters the mold cavity through the injection port 2 and the injection tube 8; after the product is shaped, the cylinder 6 drives the sliding block 4 to slide, and then drives the rack 3 to move, so that the rack 3 can drive the injection port 2 to rotate; this rotating action makes the sprue inside the injection port 2 rotate, and finally realizes the twist breaking of the sprue; the injection port 2 and the inner wall of the injection tube 8 are designed with annularly distributed protruding structures, which are embedded in the sprue to ensure that the injection port 2 can stably drive the sprue to rotate and break; the sprue is left in the injection port 2 and the injection tube 8 after being twisted and broken, at this time, by operating the sliding block 9, the end thereof is moved away from the bottom of the injection port 2, then the injection port 2 is pressed, so that the top end of the sprue is exposed, which is convenient for pulling out the twisted sprue.

[0025] The basic principle and main features of the present application are shown and described above, and the advantages of the present application are also shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A gate-twisting device for injection molds, characterized in that: The mold includes a mold body (1), an injection port (2), a slider (4), and a cylinder (6). The top of the mold body (1) is fitted with an injection port (2), and the bottom of the injection port (2) is fitted with an injection tube (8). The injection tube (8) is embedded inside the mold body (1), and one end of the bottom of the injection tube (8) is connected to the internal cavity of the mold body (1). The outside of the injection port (2) is provided with teeth, and the outside of the injection port (2) meshes with a rack (3) through the teeth. One side of the rack (3) is welded to the slider (4). One end of the slider (4) is fitted outside the telescopic end of the cylinder (6). The cylinder (6) is installed on the top of the mold body (1) by screws. The bottom of the injection port (2) is provided with a spring (7).

2. The injection mold gate twist-off device according to claim 1, characterized in that: A locking block (9) is provided between the injection port (2) and the mold body (1). One end of the locking block (9) has a sloping structure. The locking block (9) has a groove inside. The groove inside the locking block (9) slides in contact with the outer wall of the second slide rod (10). The top end of the second slide rod (10) has a protruding structure. The bottom end of the second slide rod (10) is welded to the top of the mold body (1).

3. The injection mold gate twist-off device according to claim 1, characterized in that: The top of the injection port (2) is in the shape of a bucket. The inside of the injection port (2) is connected to the inside of the injection tube (8). Both the inner walls of the injection port (2) and the injection tube (8) are provided with strip-shaped protrusions, and the strip-shaped protrusions are distributed in a ring-shaped and equally spaced manner.

4. The injection mold gate twist-off device according to claim 1, characterized in that: The outer wall of the bottom end of the injection port (2) slides in contact with the inner wall of the top end of the injection tube (8). The outer wall of the bottom end of the injection port (2) has protruding structures distributed in an annular shape at equal intervals. The inner side of the top end of the injection tube (8) is provided with a groove corresponding to the protruding structure of the outer wall of the injection port (2). The bottom end of the injection tube (8) has a conical structure.

5. The injection mold gate twist-off device according to claim 1, characterized in that: The slider (4) has two slots inside, and the inner wall of the slots slides in contact with the outer wall of the first slide rod (5). The outer wall of the top end of the first slide rod (5) has a protruding structure, and the bottom end of the first slide rod (5) is welded to the top of the mold body (1).

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