A combined injection molded bracket

Abstract

The utility model discloses a combined injection support, including movable mould base, the top fixedly connected with movable mould plate of movable mould base, the top of movable mould base is established with four positioning holes, and the inner wall of four positioning holes all is connected with the positioning column of sliding, and the top of four positioning columns all is fixedly connected with the bottom of movable mould plate, the outer wall of movable mould base is established with four through -holes, and the inner wall of four through -holes all is connected with the taper column of sliding. The utility model discloses through the cooperation of positioning column and movable mould base upper positioning hole realizes rough positioning, and then through taper column and the wedge -tight cooperation of taper hole on the positioning column realizes accurate locking, and only needs the tight pressure plate to complete movable mould plate's quick dismounting and installation, and the time of mould changing and maintenance is greatly shortened, through the guide pillar and back type spare, guide rod and oilless bushing and the mould closing column and guide hole jointly constitute multiple orientation, and the anti -eccentric load capacity and motion stability of mould closing process are greatly enhanced, and effectively prevent the shaking and jam.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a combined injection support. Background Technology

[0002] Injection molds are specialized tools used to inject molten plastic into a mold cavity under high pressure and cool it to form a plastic part of a specific shape. They consist of a fixed mold and a moving mold. Injection molds require injection supports during the injection process because when molten plastic is injected into the mold cavity under high pressure (usually tens to hundreds of megapascals), it generates huge expansion forces on the mold. Without a robust support structure, it is easy to cause mold plate deformation, core misalignment, or poor mold closing, which can lead to flash, dimensional deviations, or even mold damage.

[0003] In existing injection molding bracket structures, the moving mold and the fixed mold are usually connected by integral casting or by direct fastening with multiple bolts. When replacing the mold core or performing maintenance, a large number of screws need to be disassembled one by one, which involves many steps and is time-consuming, making it difficult to achieve rapid mold changeover. The guide of the bracket often relies on a single guide post, which is prone to shaking or jamming during mold closing due to uneven force or wear from long-term use, affecting the stability of mold operation. Therefore, we propose a combined injection molding bracket to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a combined injection molding bracket.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A modular injection molding support includes a moving mold base. A moving template is fixedly connected to the top of the moving mold base. The top of the moving mold base has four positioning holes, and positioning posts are slidably connected to the inner walls of the four positioning holes. The tops of the four positioning posts are fixedly connected to the bottom of the moving template. The outer wall of the moving mold base has four through holes, and conical posts are slidably connected to the inner walls of the four through holes. The outer walls of the four positioning posts have conical holes, and the inner walls of the four conical holes are pressed against the outer walls of the four conical posts. Each pair of the four conical posts is fixedly connected to a pressure plate, and the outer walls of the two pressure plates are fixedly connected to the outer wall of the moving mold base. The outer wall of the moving mold base is fixedly connected to four guide posts, and return molding parts are slidably fitted onto the outer walls of the four guide posts. The tops of the four return molding parts are fixedly connected to the same fixed template, and the outer wall of the fixed template is provided with a guide assembly.

[0007] Preferably, the guiding assembly includes four guide rods, and the outer wall of the fixed mold plate has four assembly holes. The inner walls of the four assembly holes are slidably connected to the outer walls of the four guide rods, and the tops of the four guide rods are fixedly connected to the same fixed mold base.

[0008] Preferably, four mold-closing pillars are fixedly connected to the top of the fixed template, and four oil-free bushings are fixedly embedded in the outer wall of the fixed template. The outer wall of the mold-closing pillars is slidably connected to the inner wall of the oil-free bushings.

[0009] Preferably, the top of the moving template has four guide holes, and the inner walls of the four guide holes are slidably connected to the outer walls of the four guide rods respectively.

[0010] Preferably, a sprue sleeve is fixedly embedded in the top of the fixed mold base, and a lifting ring is fixedly connected to the outer wall of the moving mold plate.

[0011] Preferably, both the moving mold base and the fixed mold base have two threaded holes on their outer walls, and the inner walls of the four threaded holes are threaded with mounting sleeves.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution achieves coarse positioning by cooperating with the positioning pin and the positioning hole on the moving mold base, and then achieves precise locking by wedge-tightening with the tapered pin and the tapered hole on the positioning pin. The moving mold plate can be quickly disassembled and installed by simply tightening and loosening the pressure plate, which greatly shortens the mold change and maintenance time.

[0014] The multiple guides formed by the guide pillars and return mold, the guide rods and oil-free bushings, and the mold closing pillars and guide holes greatly enhance the anti-eccentric load capacity and smoothness of movement during the mold closing process, effectively preventing shaking and jamming. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view three-dimensional structural diagram of a combined injection molding bracket proposed in this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of a combined injection molding bracket proposed in this utility model;

[0018] Figure 3 This is a second-view three-dimensional structural diagram of a combined injection molding bracket proposed in this utility model.

[0019] In the diagram: 1. Moving mold base; 2. Moving mold plate; 3. Positioning post; 4. Conical post; 5. Pressure plate; 6. Guide post; 7. Return mold piece; 8. Fixed mold plate; 9. Mold closing post; 10. Oil-free bushing; 11. Guide rod; 12. Fixed mold base; 13. Sprue bushing; 14. Mounting sleeve; 15. Lifting ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-3 As shown, a combined injection molding bracket is disclosed, including a moving mold base 1. A moving mold plate 2 is fixedly connected to the top of the moving mold base 1. Four positioning holes are opened on the top of the moving mold base 1. Positioning pins 3 are slidably connected to the inner walls of the four positioning holes. The tops of the four positioning pins 3 are fixedly connected to the bottom of the moving mold plate 2. Four through holes are opened on the outer wall of the moving mold base 1. Conical pins 4 are slidably connected to the inner walls of the four through holes. Conical holes are opened on the outer walls of the four positioning pins 3. The inner walls of the four conical holes are respectively pressed against the outer walls of the four conical pins 4. The conical holes and conical pins 4 are pressed together to achieve rigid locking between the moving mold plate 2 and the moving mold base 1. The guiding function of the positioning pins 3 ensures high repeatability and positioning accuracy when the moving mold plate 2 is disassembled and assembled, and avoids misalignment after mold change.

[0022] Each of the four conical columns 4 is fixedly connected to a pressure plate 5 in pairs. The pressure plate 5 is used to lock the position of the conical column 4 and ensure that it is stably matched with the positioning column 3. The outer walls of the two pressure plates 5 are fixedly connected to the outer wall of the moving mold base 1 through existing countersunk bolts.

[0023] Four guide pillars 6 are fixedly connected to the outer wall of the moving template 2. The outer walls of the four guide pillars 6 are all slidably fitted with return parts 7. The guide pillars 6 provide guidance for the closing of the moving template 2 and the fixed template 8. The guide pillars 6 cooperate with the return parts 7 to ensure that the moving template 2 moves smoothly when the mold is closed, and avoids shaking or jamming caused by uneven force.

[0024] The top of the four molded parts 7 is fixedly connected to the same fixed template 8, and the top of the moving template 2 is fixedly connected to four mold closing pillars 9. The outer wall of the fixed template 8 is fixedly inlaid with four oil-free bushings 10. The outer wall of the mold closing pillars 9 is slidably connected to the inner wall of the oil-free bushings 10. When the mold closing pillars 9 are closed, they are inserted into the oil-free bushings 10 of the fixed template 8, providing double guidance for mold closing.

[0025] A sprue sleeve 13 is fixedly embedded on the top of the fixed mold base 12, and a lifting ring 15 is fixedly connected to the outer wall of the moving mold plate 2. Both the moving mold base 1 and the fixed mold base 12 have two threaded holes on their outer walls, and the inner walls of the four threaded holes are threaded with mounting sleeves 14.

[0026] The outer wall of the fixed template 8 is provided with a guide assembly, which includes four guide rods 11. The top of the moving template 2 is provided with four guide holes. The inner walls of the four guide holes are slidably connected to the outer walls of the four guide rods 11 respectively. The guide rods 11 are of sufficient length to ensure that the moving template 2 moves smoothly throughout the entire mold closing stroke. It forms multiple guides with the guide pillars 6 and the mold closing pillars 9, completely solving the defect of easy shaking due to single guide. The outer wall of the fixed template 8 is provided with four assembly holes. The inner walls of the four assembly holes are slidably connected to the outer walls of the four guide rods 11 respectively. The top of the four guide rods 11 is fixedly connected to the same fixed mold base 12. The fixed template 8 is fixed to the fixed mold base 12 by existing countersunk bolts.

[0027] Working principle: In use, the fixed mold plate 8 is first fixed to the fixed mold base 12 through its four assembly holes along the four guide rods 11; before mold closing, the sprue sleeve 13 on the fixed mold base 12 is aligned with the injection molding machine nozzle, and the molten plastic is injected into the mold cavity formed by the moving mold plate 2 and the fixed mold plate 8 through the sprue sleeve 13; during the mold closing process, the four mold closing pillars 9 on the moving mold plate 2 are inserted into the four oil-free bushings 10 of the fixed mold plate 8, and at the same time, the four guide holes on the top of the moving mold plate 2 slide into the four guide rods 11 respectively; at the same time, the four guide pillars 6 on the moving mold plate 2 move along the inner wall of the four return parts 7 to ensure smooth closure;

[0028] When it is necessary to replace the mold core or perform maintenance, the pressure plate 5 can be loosened, allowing the tapered column 4 to disengage from the tapered hole on the outer wall of the positioning column 3, thus releasing the locking of the moving mold plate 2. The moving mold plate 2, through the four positioning columns 3 at the bottom and the positioning holes of the moving mold base 1, can achieve quick disassembly and repositioning. The entire structure provides a high-rigidity connection through the wedge-tight fit between the positioning column 3 and the tapered column 4. The guide column 6, guide rod 11, and mold closing column 9 together form multiple guides to ensure mold closing accuracy and operational stability. The lifting ring 15 facilitates overall lifting, thereby realizing the modularity and quick mold changing function of the combined injection molding bracket.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A combined injection molding bracket, comprising a moving mold base (1), characterized in that, The top of the moving mold base (1) is fixedly connected to the moving template (2). The top of the moving mold base (1) is provided with four positioning holes. The inner walls of the four positioning holes are slidably connected to positioning columns (3). The tops of the four positioning columns (3) are fixedly connected to the bottom of the moving template (2). The outer wall of the moving mold base (1) is provided with four through holes. The inner walls of the four through holes are slidably connected to conical columns (4). The outer walls of the four positioning columns (3) are provided with conical holes. The inner walls of the four conical holes are pressed against the outer walls of the four conical columns (4). The four conical columns (4) are fixedly connected to pressure plates (5) in pairs. The outer walls of the two pressure plates (5) are fixedly connected to the outer wall of the moving mold base (1). The outer wall of the moving template (2) is fixedly connected with four guide columns (6). The outer walls of the four guide columns (6) are slidably fitted with return parts (7). The tops of the four return parts (7) are fixedly connected to the same fixed template (8). The outer wall of the fixed template (8) is provided with a guide component.

2. The combined injection-molded bracket according to claim 1, characterized in that, The guide assembly includes four guide rods (11), and the outer wall of the fixed template (8) is provided with four assembly holes. The inner walls of the four assembly holes are slidably connected to the outer walls of the four guide rods (11), and the tops of the four guide rods (11) are fixedly connected to the same fixed mold base (12).

3. The combined injection-molded bracket according to claim 1, characterized in that, The top of the moving template (2) is fixedly connected with four mold-closing pillars (9), and the outer wall of the fixed template (8) is fixedly inlaid with four oil-free bushings (10). The outer wall of the mold-closing pillars (9) is slidably connected to the inner wall of the oil-free bushings (10).

4. A combined injection-molded bracket according to claim 1, characterized in that, The top of the moving template (2) is provided with four guide holes, and the inner walls of the four guide holes are slidably connected to the outer walls of the four guide rods (11).

5. A combined injection-molded bracket according to claim 2, characterized in that, The top of the fixed mold base (12) is fixedly inlaid with a sprue sleeve (13), and the outer wall of the moving mold plate (2) is fixedly connected with a lifting ring (15).

6. A combined injection-molded bracket according to claim 2, characterized in that, The outer walls of both the moving mold base (1) and the fixed mold base (12) have two threaded holes, and the inner walls of the four threaded holes are threaded with mounting sleeves (14).

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