Injection molding structure for embedding and ejecting blind hole nut

Abstract

The utility model discloses an injection molding structure for embedding and ejecting a blind hole nut, which comprises an injection mold for producing the blind hole nut, a cavity is arranged in the injection mold, a telescopic component is arranged at the bottom of the injection mold, and the telescopic component comprises a fixed plate, a movable column and a limiting component, the top of the fixed plate is fixedly connected with the bottom of the injection mold, a through hole allowing the movable column to penetrate through is formed in the surface of the fixed plate, the top end of the movable column penetrates through the through hole to extend into the cavity, the movable column is in threaded connection with the through hole, a liquid blocking plate is fixedly arranged at the top end of the movable column, and the outer side of the liquid blocking plate is tightly attached to the inner side of the cavity. One end of the limiting assembly is movably arranged on the outer side of the movable column in a sleeving mode, the outer side of the movable column is further fixedly provided with a blocking piece in a sleeving mode, and one end of the limiting assembly is located in the blocking piece. And the progress of the whole injection molding process is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to blind hole nut burying injection use injection moulding structure technical field, specifically is a kind of blind hole nut burying injection use injection moulding structure. BACKGROUND

[0002] Blind hole nut is a kind of special design fastener, its feature is that the hole in the nut is not the blind hole of whole part, i.e. one end of the nut is closed, this design makes blind hole nut only need to install and operate on one side when connecting two or more parts, it is very suitable for using on single-sided operation closed workpiece and light and thin metal material workpiece needing threaded coupling, and when producing blind hole nut, to ensure its production speed, injection process is usually used for production and processing.

[0003] The injection moulding structure is mostly composed of upper die and lower die, when injection process is carried out, upper die and lower die need to be tightly attached, liquid used in injection process is injected into the cavity between upper die and lower die through the injection port in the top of upper die, and the liquid is shaped by cavity, so that the liquid can be in the shape of blind hole nut after cooling, but the cavity formed by the existing upper die and lower die is fixed size, when other size blind hole nut needs to be processed, another set of injection mould is needed, which greatly increases the time required for injection, and reduces the progress of overall injection process. UTILITY MODEL CONTENT

[0004] In view of the above situation, to overcome the defects of prior art, the utility model provides a kind of injection moulding structure for blind hole nut burying injection, effectively solve the problem of slow progress when producing different size blind hole nut for injection moulding structure for blind hole nut burying injection.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of injection moulding structure for blind hole nut burying injection, including injection mould for producing blind hole nut, the injection mould is equipped with cavity, and the bottom of injection mould is equipped with telescopic component, and one end of telescopic component is located in the cavity;

[0006] Telescopic component includes fixed plate, movable column and limiting assembly, the top of fixed plate is fixedly connected with the bottom of injection mould, the surface of fixed plate is equipped with through-hole for movable column, the top of movable column extends to the inside of cavity by passing through through-hole, and movable column is screw-connected with through-hole, the top of movable column is fixedly equipped with liquid resistance plate, and the outside of liquid resistance plate is tightly attached with the inside of cavity, one end of limiting assembly is movably sleeved on the outside of movable column, and the outside of movable column is also fixedly sleeved with blocking piece, and one end of limiting assembly is located in the inside of blocking piece.

[0007] Preferably, the limiting assembly is composed of two identical limiting pieces, the surface of the fixed plate is provided with a through slot for the limiting piece to pass through, and the bottom of the injection mold is provided with a groove for the limiting piece to slide, one end of the limiting piece is tightly attached to the outer side of the movable column, and the end of the limiting piece away from the movable column passes through the through slot and extends into the groove.

[0008] Preferably, the limiting piece comprises an arc-shaped plate, a connecting plate and a supporting plate, the inner side of the arc-shaped plate is tightly attached to the outer side of the movable column, one end of the connecting plate is fixedly connected to the outer side of the arc-shaped plate, the bottom end of the supporting plate is fixedly connected to the top of the end of the connecting plate away from the arc-shaped plate, and a clamping piece is fixedly arranged at the top end of the supporting plate.

[0009] Preferably, the clamping piece comprises a fixed block and a clamping block, the bottom of the fixed block is fixedly connected to the top end of the supporting rod, one side of the fixed block is provided with an expansion slot for the clamping block to move, one side of the clamping block is connected to one side inside the expansion slot through an elastic piece, and the top and bottom of the side of the clamping block away from the elastic piece are both arranged in an inclined manner.

[0010] Preferably, the elastic piece is a spring, one end of the spring is fixedly connected to one side inside the expansion slot, and the other end of the spring is fixedly connected to one side of the clamping block.

[0011] Preferably, one side inside the expansion slot is provided with a plurality of baffles, the cross section of each baffle is trapezoidal, a limiting slot is formed between every two baffles, and the side of the clamping block away from the spring is attached to the inner side of the limiting slot.

[0012] Preferably, the blocking piece is composed of two fixed rings, both of the two fixed rings are fixedly sleeved on the surface of the movable column, and the top and bottom of the arc-shaped plate are attached to the adjacent sides of the two fixed rings, respectively.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] When other size blind hole nuts need to be produced, the movable column is rotated, because the movable column is in threaded connection with the through hole, so when the movable column is rotated, the liquid blocking plate will be lifted and lowered in the cavity, by adjusting the position of the liquid blocking plate, the size of the cavity can be adjusted, so that the cavity can contain more liquid, through the above structure, the injection molding of blind hole nuts of different sizes is convenient, the injection mold does not need to be replaced, the time required for injection molding is reduced to a certain extent, and the progress of the overall injection molding process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, together with the embodiments of the utility model, for explaining the utility model, and do not constitute a limitation on the utility model.

[0016] In the drawings:

[0017] Figure 1 Structure diagram of the injection molding structure for embedding and shooting of the blind hole nut of the utility model is shown in the figure;

[0018] Figure 2 Structure diagram of the injection molding structure for embedding and shooting of the blind hole nut of the utility model is shown in the figure; Figure One ;

[0019] Figure 3 Structure diagram of the injection molding structure for embedding and shooting of the blind hole nut of the utility model is shown in the figure; Figure Two ;

[0020] Figure 4 For Figure 3 Enlarged structure diagram of A shown in the figure;

[0021] Figure 5 Structure diagram of the utility model is shown in the figure;

[0022] Figure 6 Structure diagram of the utility model is shown in the figure;

[0023] Figure 7 Structure diagram of the injection molding structure for embedding and shooting of the blind hole nut of the utility model is shown in the figure;

[0024] In the figure: 1, injection mold;2, cavity;3, fixed plate;4, movable column;5, through hole;6, liquid resistance plate;7, through slot;8, recess;9, arc plate;10, connecting plate;11, support plate;12, fixed block;13, clamping block;14, expansion slot;15, spring;16, baffle;17, limiting groove;18, fixed ring. DETAILED DESCRIPTION

[0025] 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.

[0026] By Figures 1-7As shown, the utility model of production blind hole nut injection mold 1 is equipped with cavity 2 inside, and the bottom of injection mold 1 is equipped with telescopic component, and one end of telescopic component is located inside cavity 2, and telescopic component includes fixed plate 3, movable column 4 and limiting assembly, and the top of fixed plate 3 is fixedly connected with the bottom of injection mold 1, and the surface of fixed plate 3 is equipped with through hole 5 for movable column 4, and the top of movable column 4 extends to the inside of cavity 2 through through hole 5, and movable column 4 and through hole 5 are screw connections, and the top of movable column 4 is fixedly equipped with liquid resistance plate 6, and the outside of liquid resistance plate 6 is closely attached with the inside of cavity 2, and one end of limiting assembly is movably sleeved on the outside of movable column 4, and the outside of movable column 4 is also fixedly sleeved with blocking piece, and one end of limiting assembly is located inside blocking piece, when needing to produce other size blind hole nut, rotating movable column 4, because movable column 4 and through hole 5 are screw connections, so when movable column 4 rotates, itself will move along through hole 5, and then drives liquid resistance plate 6 to move up and down in cavity 2, and the size of the inside of cavity 2 can be adjusted by adjusting the position of liquid resistance plate 6, so that cavity 2 can contain more liquid,

[0027] Limiting assembly is composed of two same limiting pieces, the surface of fixed plate 3 is equipped with through slot 7 for limiting piece, and the bottom of injection mold 1 is equipped with recess 8 for limiting piece sliding, one end of limiting piece is closely attached with the outside of movable column 4, and the end of limiting piece away from movable column 4 extends to the inside of recess 8 through through slot 7;

[0028] Limiting piece includes arc plate 9, connecting plate 10 and support plate 11, support plate 11 has elasticity, arc plate 9 inside is closely attached with the outside of movable column 4, one end of connecting plate 10 is fixedly connected with the outside of arc plate 9, the bottom of support plate 11 is fixedly connected with the top of one end of connecting plate 10 away from arc plate 9, and support plate 11 top is fixedly equipped with clamping piece, and clamping piece includes fixed block 12 and clamping block 13, the bottom of fixed block 12 is fixedly connected with the top of support rod, one side of fixed block 12 is equipped with telescopic slot 14 for clamping block 13, one side of clamping block 13 is connected with one side inside telescopic slot 14 through elastic piece, and the top and bottom of one side of clamping block 13 away from elastic piece are both inclinedly arranged;

[0029] The elastic member is a spring 15, one end of the spring 15 is fixedly connected with one side inside the telescopic groove 14, the other end of the spring 15 is fixedly connected with one side of the clamping block 13, one side inside the telescopic groove 14 is provided with a plurality of baffles 16, the cross section of each baffle 16 is trapezoidal, a limiting groove 17 is formed between every two baffles 16, and the side of the clamping block 13 away from the spring 15 is attached to the inner side of the limiting groove 17, the blocking member is composed of two fixed rings 18, the two fixed rings 18 are fixedly sleeved on the surface of the movable column 4, and the top and the bottom of the arc-shaped plate 9 are attached to the adjacent sides of the two fixed rings 18 respectively, through the cooperation between the clamping block 13 and the limiting groove 17, the stability of the liquid blocking plate 6 inside the mold cavity 2 can be improved, and the supporting plate 11 has a certain elasticity, so that the arc-shaped plate 9 can be taken out from between the two fixed rings 18 by pulling the supporting plate 11 to bend itself, so that the movable column 4 can be conveniently disassembled.

[0030] Working principle:

[0031] When blind hole nuts of other sizes need to be produced, the movable column 4 is rotated, because the movable column 4 is in threaded connection with the through hole 5, when the movable column 4 is rotated, it will move along the through hole 5, thereby driving the liquid blocking plate 6 to move up and down inside the mold cavity 2, by adjusting the position of the liquid blocking plate 6, the size of the mold cavity 2 can be adjusted, so that the mold cavity 2 can contain more liquid;

[0032] Because the top and the bottom of the arc-shaped plate 9 are attached to the adjacent sides of the two fixed rings 18 respectively, and the fixed rings 18 are fixedly sleeved on the surface of the movable column 4, when the movable column 4 moves along the through hole 5, the arc-shaped plate 9 will move synchronously, when the arc-shaped plate 9 moves, the fixed block 12 will move inside the groove 8 through the connecting plate 10 and the supporting plate 11, because one end of the clamping block 13 is located inside the telescopic groove 14 opened on one side of the fixed block 12, and the side of the clamping block 13 away from the spring 15 is attached to the limiting groove 17, so in the process of the fixed block 12 driving the clamping block 13 to move, the side of the clamping block 13 away from the spring 15 will be extruded by the baffle 16, because the top and the bottom of the side of the clamping block 13 away from the spring 15 are both inclined, when it is extruded, through the setting of the inclined surfaces of the top and the bottom, the extrusion force can be converted into a pushing force moving into the telescopic groove 14, so that the clamping block 13 moves into the telescopic groove 14 and extrudes the spring 15, when the clamping block 13 moves to the position of another limiting groove 17, under the elastic action of the spring 15, the clamping block 13 will move into the limiting groove 17, so that the side of the clamping block 13 is attached to the inner side of the limiting groove 17;

[0033] It should be noted that through the cooperation between the clamping block 13 and the limiting groove 17, the stability of the liquid blocking plate 6 inside the mold cavity 2 can be improved, and the supporting plate 11 has a certain elasticity, so that the supporting plate 11 can be bent by pulling to take out the arc-shaped plate 9 from the two fixed rings 18, thereby facilitating the disassembly of the movable column 4.

[0034] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An injection molding structure for blind nut embedding injection, comprising an injection mold (1) for producing a blind nut, characterized in that: The injection mold (1) is internally provided with a cavity (2), and the bottom of the injection mold (1) is provided with a telescopic component, one end of the telescopic component being located inside the cavity (2); The telescopic component comprises a fixed plate (3), a movable column (4) and a limiting assembly, the top of the fixed plate (3) is fixedly connected with the bottom of the injection mold (1), the surface of the fixed plate (3) is provided with a through hole (5) through which the movable column (4) extends, the top of the movable column (4) extends into the cavity (2) through the through hole (5), and the movable column (4) and the through hole (5) are threadedly connected, the top of the movable column (4) is fixedly provided with a liquid blocking plate (6), and the outer side of the liquid blocking plate (6) is tightly attached to the inner side of the cavity (2), one end of the limiting assembly is movably sleeved on the outer side of the movable column (4), and the outer side of the movable column (4) is further fixedly sleeved with a blocking piece, and one end of the limiting assembly is located inside the blocking piece.

2. An injection molding structure for embedding a blind-nut, according to claim 1, wherein: The limiting assembly is composed of two limiting pieces with the same structure, the surface of the fixed plate (3) is provided with a through slot (7) through which the limiting piece passes, and the bottom of the injection mold (1) is provided with a groove (8) for the limiting piece to slide, one end of the limiting piece is tightly attached to the outer side of the movable column (4), and the end of the limiting piece away from the movable column (4) extends into the groove (8) through the through slot (7).

3. The injection molding structure for embedding a blind-nut, according to claim 2, wherein: The limiting piece comprises an arc-shaped plate (9), a connecting plate (10) and a supporting plate (11), the inner side of the arc-shaped plate (9) is tightly attached to the outer side of the movable column (4), one end of the connecting plate (10) is fixedly connected with the outer side of the arc-shaped plate (9), the bottom end of the supporting plate (11) is fixedly connected with the top of the end of the connecting plate (10) away from the arc-shaped plate (9), and the top of the supporting plate (11) is fixedly provided with a clamping piece.

4. The injection molding structure for embedding a blind-nut, according to claim 3, wherein: The clamping piece comprises a fixed block (12) and a clamping block (13), the bottom of the fixed block (12) is fixedly connected with the top end of the supporting rod, the fixed block (12) is provided with an expansion slot (14) on one side for the movable clamping block (13), the clamping block (13) is connected with one side of the expansion slot (14) through an elastic piece, and the top and bottom of the side of the clamping block (13) away from the elastic piece are both inclined.

5. An injection molding structure for embedding a blind-nut, according to claim 4, wherein: The elastic piece is a spring (15), one end of the spring (15) is fixedly connected with one side of the expansion slot (14), and the other end of the spring (15) is fixedly connected with one side of the clamping block (13).

6. An injection molding structure for embedding a blind-nut, according to claim 5, wherein: A plurality of baffles (16) are arranged on one side of the expansion slot (14), the cross section of each baffle (16) is trapezoidal, a limiting slot (17) is formed between every two baffles (16), and the side of the clamping block (13) away from the spring (15) is attached to the inner side of the limiting slot (17).

7. The injection molding structure for embedding a blind-nut according to claim 1, wherein: The blocking piece is composed of two fixed rings (18), the two fixed rings (18) are fixedly sleeved on the surface of the movable column (4), and the top and bottom of the arc-shaped plate (9) are respectively attached to the adjacent sides of the two fixed rings (18).

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