Injection mold structure

Abstract

The utility model discloses an injection mold structure. The injection mold structure comprises a movable mold; the mold has the beneficial effects that the first cooling coil pipe, the second cooling coil pipe and the third cooling coil pipe are arranged, so that the forming cavity in the fixed mold is cooled by the first cooling coil pipe, and the outer side of the forming cavity is cooled by the second cooling coil pipe; a third cooling coil pipe is combined to cool the inner side position of a movable mold forming cavity, cooling is uniform, the temperature difference of different areas in the mold is small, and the problem after a plastic product is cooled is avoided; when the inner sliding plate moves, the ejector columns and the inner sliding supporting plate are driven to move, the ejector pins are driven by the inner sliding supporting plate to conduct ejection, injection molding parts in the movable mold are ejected out, and stable demolding is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is an injection mold structure. BACKGROUND

[0002] Injection mold, also known as injection mold, is a kind of tool for producing plastic products. This mold is by injection molding process, and the thermoplastic or thermosetting plastic raw materials are injected into the cavity of the mold, then cooled and solidified in the mold, and finally the plastic product of the required shape and size is obtained. Injection mold is composed of movable die and fixed die, and pouring system and cooling system are arranged between them. Office chair base is also manufactured by injection mold. Office chair base, as a kind of plastic product, its manufacturing process often involves the use of injection mold. The cooling system of office chair base injection mold usually adopts simple straight-line cooling pipeline, which often leads to uneven cooling, and the temperature difference between different areas inside the mold is large, which causes the plastic product to produce internal stress, warping and uneven shrinkage after cooling. SUMMARY

[0003] The utility model aims at providing an injection mold structure to solve the problem of uneven cooling caused by the simple straight-line cooling pipeline of the cooling system of office chair base injection mold, and the large temperature difference between different areas inside the mold, which causes the plastic product to produce internal stress, warping and uneven shrinkage after cooling.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an injection mold structure, comprising:

[0005] Movable die;

[0006] Fixed die, the fixed die is arranged on one side of the movable die;

[0007] Ejector pin, the ejector pin is slidably arranged in the interior of the movable die;

[0008] No. One cooling coil, the no. One cooling coil is arranged in the interior of the fixed die;

[0009] No. Two cooling coils, the no. Two cooling coils are arranged in the interior of the movable die, and the movable die is provided with a plurality of no. Three cooling coils;

[0010] No. Two liquid passage boxes, the no. Two liquid passage boxes are symmetrically arranged on the outside of the fixed die, one of the no. Two liquid passage boxes is connected with one end of the no. One cooling coil, and the other no. Two liquid passage boxes is connected with the other end of the no. One cooling coil;

[0011] One liquid tank, one liquid tank symmetrically arranged outside the movable mold, one of the one liquid tank is connected with the second cooling coil and the one end of the third cooling coil, the other one liquid tank is connected with the second cooling coil and the other end of the third cooling coil;

[0012] The ejection assembly is arranged on one side of the movable mold, and the ejector pin is connected with the ejection assembly.

[0013] As a preferred scheme of the utility model: the ejection assembly includes an inner sliding support plate, the inner sliding support plate is arranged on one side of the movable mold, one end of the ejector pin is fixedly connected with the inner sliding support plate, and one side of the inner sliding support plate is fixedly connected with a top column.

[0014] As a preferred scheme of the utility model: one side of the movable mold is fixedly connected with a mold support seat, the inner sliding support plate is slidably connected with the inner side of the mold support seat, the ejector pin is slidably connected with the mold support seat, a plurality of limiting columns are equidistantly arranged in the inner sliding support plate, the limiting columns are fixedly connected with the mold support seat, and the top column is slidably connected with the mold support seat.

[0015] As a preferred scheme of the utility model: one side of the mold support seat is fixedly connected with a side support frame, the inner side of the side support frame is slidably provided with an inner sliding plate, one end of the top column is fixedly connected with the inner sliding plate, one side of the side support frame is provided with a gas cylinder, and the output end of the gas cylinder is fixedly connected with the inner sliding plate.

[0016] As a preferred scheme of the utility model: a limiting sliding rod is fixedly connected with one side of the inner sliding plate in a symmetrical mode, and the limiting sliding rod is slidably connected with the side support frame.

[0017] As a preferred scheme of the utility model: one side of the second liquid tank is fixedly connected with a first liquid pipe, and one side of the first liquid tank is fixedly connected with a second liquid pipe.

[0018] Compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with the first cooling coil, the second cooling coil and the third cooling coil, the first cooling coil cools the forming cavity in the fixed mold, the second cooling coil cools the outside position of the forming cavity, and the third cooling coil cools the inside position of the forming cavity of the movable mold, so that the cooling is uniform, the temperature difference of different regions in the mold is small, the problem of the plastic product after cooling is avoided, the output end of the gas cylinder drives the inner sliding plate to move in the side support frame, the inner sliding plate drives the top column and the inner sliding support plate to move when moving, the inner sliding support plate drives each ejector pin to move, the injection molding part in the movable mold is ejected, and stable demolding is completed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is whole structure schematic diagram of the utility model.

[0020] Figure 2 is a top view of the utility model;

[0021] Figure 3 is a front view of the utility model;

[0022] Figure 4 is a schematic diagram of the internal structure of the utility model;

[0023] Figure 5 is a schematic diagram of the structure of the second cooling coil and the third cooling coil of the utility model.

[0024] In the figure: 1, movable die; 2, fixed die; 3, ejector pin; 4, die support seat; 5, inner sliding support plate; 6, limiting column; 7, side support frame; 8, first liquid passing tank; 9, second liquid passing tank; 10, first liquid passing pipe; 11, second liquid passing pipe; 12, first cooling coil; 13, second cooling coil; 14, third cooling coil; 15, inner sliding plate; 16, top column; 17, limiting sliding rod; 18, air cylinder. 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] Please refer to Figures 1 to 5 The utility model provides a kind of technical solutions: a kind of injection mold structure, comprising: movable die 1;Fixed die 2 is arranged on the side of movable die 1;Ejector pin 3 is slidably arranged in the inside of movable die 1;First cooling coil 12 is fixedly connected in the inside of fixed die 2;Second cooling coil 13 is fixedly connected in the inside of movable die 1, and movable die 1 is fixedly connected with multiple third cooling coils 14 in the inside;Second liquid passing tank 9 is symmetrically fixedly connected on the outside of fixed die 2, one of second liquid passing tank 9 is connected with the one end of first cooling coil 12, and the other second liquid passing tank 9 is connected with the other end of first cooling coil 12;First liquid passing tank 8 is symmetrically fixedly connected on the outside of movable die 1, one of first liquid passing tank 8 is connected with the one end of second cooling coil 13 and third cooling coil 14, and the other first liquid passing tank 8 is connected with the other end of second cooling coil 13 and third cooling coil 14;Ejection assembly is arranged on the side of movable die 1, and ejector pin 3 is connected with ejection assembly.

[0027] It is understood that this utility model uses an external driving device to move the moving mold 1 and fit it against the fixed mold 2. Injection molding is completed by an external injection molding device connected to the fixed mold 2, forming the mold within the fixed mold 2 and the moving mold 1. A cooling water circulation system is connected externally via a first liquid pipe 10 and a second liquid pipe 11. This system consists of a water tank, a cooling tower, a circulating water pump, a heat exchanger, a control system, and a piping system. The water tank stores sufficient cooling water, the cooling tower performs heat exchange and cooling, the circulating water pump drives water circulation, the heat exchanger maintains a suitable temperature through heat exchange with the mold, the control system regulates the water flow and temperature, and the piping system connects all components to form a circulation loop. The second liquid pipe is connected to one end of the first liquid pipe 10 and the second liquid pipe 11. Cooling water is supplied through tank 9 and liquid pipe 10. Cooling water enters cooling coil 12 through liquid tank 9 to cool the molded plastic parts in the fixed mold 2. Cooling water enters cooling coil 13 and cooling coil 14 through liquid tank 8 to cool the molded plastic parts in the moving mold 1. After cooling, the mold support 4, moving mold 1 and fixed mold 2 are separated. The output end of cylinder 18 drives the ejector pin 16 and inner sliding support plate 5 to move. The inner sliding support plate 5 slides in the mold support 4. The mold support 4 drives the ejector pin 3 on one side to move. The ejector pin 3 ejects the molded plastic parts in the moving mold 1, completing the demolding process.

[0028] Please see Figures 1 to 5 The ejector assembly includes an inner sliding support plate 5, which is placed on one side of the moving mold 1. One end of the ejector pin 3 is fixedly connected to the inner sliding support plate 5, and an ejector post 16 is fixedly connected to one side of the inner sliding support plate 5.

[0029] It is understood that in this utility model, the inner sliding support plate 5 is moved by the top column 16, and the inner sliding support plate 5 moves the ejector pin 3 to eject the molded plastic part in the moving mold 1.

[0030] Please see Figures 1 to 5 A mold support base 4 is fixedly connected to one side of the moving mold 1. The inner sliding support plate 5 is slidably connected to the inner side of the mold support base 4. The ejector pin 3 is slidably connected to the mold support base 4. Multiple limiting posts 6 are equidistantly slidably arranged inside the inner sliding support plate 5. The limiting posts 6 are fixedly connected to the mold support base 4. The ejector pin 16 is slidably connected to the mold support base 4.

[0031] It is understandable that the inner sliding support plate 5 of this utility model slides and limits the movement of the inner sliding support plate 5 and the ejector pin 3 on the outside of the limiting post 6, thereby improving the stability of the ejector pin 3 ejecting the molded plastic part.

[0032] Please see Figures 1 to 5The side support frame 7 is symmetrically provided with a limiting sliding rod 17 on one side of the inner sliding plate 15, and the limiting sliding rod 17 is slidably connected with the side support frame 7.

[0033] It can be understood that the utility model drives the inner sliding plate 15 to move through the output end of the air cylinder 18, drives the top column 16 on one side to move through the inner sliding plate 15, drives the top column 16 to move and adjusts, and completes the ejection work.

[0034] Please refer to Figure 3 and Figure 4 The side support frame 7 is symmetrically provided with a limiting sliding rod 17 on one side of the inner sliding plate 15, and the limiting sliding rod 17 is slidably connected with the side support frame 7.

[0035] It can be understood that the utility model drives the inner sliding plate 15 to move through the output end of the air cylinder 18, drives the top column 16 on one side to move through the inner sliding plate 15, drives the top column 16 to move and adjusts, and completes the ejection work.

[0036] Please refer to Figures 1 to 5 One side of the second liquid tank 9 is fixedly connected with the first liquid pipe 10, and one side of the first liquid tank 8 is fixedly connected with the second liquid pipe 11.

[0037] It can be understood that the utility model drives the inner sliding plate 15 to move through the output end of the air cylinder 18, drives the top column 16 on one side to move through the inner sliding plate 15, drives the top column 16 to move and adjusts, and completes the ejection work.

[0038] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model.

[0039] In addition, the terms "first", "second", "third", "fourth" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features limited by "first", "second", "third", "fourth" can explicitly or implicitly include at least one feature.

[0040] In the utility model, unless another definite provision and limitation, the term "installation", "arrangement", "connection", "fixation", "screw connection" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for the ordinary skill of the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0041] Although the embodiments of the utility model have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold structure, characterized by, Include: Moving die (1); Fixed die (2), fixed die (2) is arranged on one side of moving die (1); Ejector pin (3), ejector pin (3) is arranged in the inside of moving die (1) slidingly; No. 1 cooling coil (12), no. 1 cooling coil (12) is arranged in the inside of fixed die (2); No. 2 cooling coil (13), no. 2 cooling coil (13) is arranged in the inside of moving die (1), and a plurality of no. 3 cooling coils (14) are arranged in the inside of moving die (1); No. 2 liquid tank (9), no. 2 liquid tank (9) is symmetrically arranged on the outside of fixed die (2), one of no. 2 liquid tank (9) is connected with one end of no. 1 cooling coil (12), and the other no. 2 liquid tank (9) is connected with the other end of no. 1 cooling coil (12); No. 1 liquid tank (8), no. 1 liquid tank (8) is symmetrically arranged on the outside of moving die (1), one of no. 1 liquid tank (8) is connected with one end of no. 2 cooling coil (13) and no. 3 cooling coil (14), and the other no. 1 liquid tank (8) is connected with the other end of no. 2 cooling coil (13) and no. 3 cooling coil (14); Ejection assembly, ejection assembly is arranged on one side of moving die (1), and ejector pin (3) is connected with ejection assembly.

2. A plastic injection mold structure according to claim 1, characterized in that: The ejection assembly includes inner sliding support plate (5), which is arranged on one side of moving die (1), one end of ejector pin (3) is fixedly connected with inner sliding support plate (5), and one side of inner sliding support plate (5) is fixedly connected with top column (16).

3. A plastic injection mold structure according to claim 2, wherein: One side of moving die (1) is fixedly connected with mold support seat (4), inner side of mold support seat (4) is slidingly connected with inner sliding support plate (5), ejector pin (3) is slidingly connected with mold support seat (4), a plurality of limiting columns (6) are equidistantly arranged in the inside of inner sliding support plate (5), limiting columns (6) are fixedly connected with mold support seat (4), and top column (16) is slidingly connected with mold support seat (4).

4. A plastic injection mold structure according to claim 3, wherein: One side of mold support seat (4) is fixedly connected with side support frame (7), inner side of side support frame (7) is slidingly provided with inner sliding plate (15), one end of top column (16) is fixedly connected with inner sliding plate (15), one side of side support frame (7) is provided with air cylinder (18), and output end of air cylinder (18) is fixedly connected with inner sliding plate (15).

5. A plastic injection mold structure according to claim 4, wherein: One side of inner sliding plate (15) is symmetrically fixedly connected with limiting sliding rod (17), and limiting sliding rod (17) is slidingly connected with side support frame (7).

6. The injection mold structure of claim 1, wherein: One side of no. 2 liquid tank (9) is fixedly connected with no. 1 liquid pipe (10), and one side of no. 1 liquid tank (8) is fixedly connected with no. 2 liquid pipe (11).

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