Cold runner system of silicone rubber injection mold

Abstract

The utility model discloses a cold runner system of a silicone rubber injection mold, which comprises a runner plate, a plurality of groups of adapters are embedded in the runner plate, each adapter comprises a three-way adapter nozzle and a two-way adapter nozzle, and heat of a heating plate can be prevented from being transferred to the upper surface of the runner plate by arranging a first heat insulation plate. The runner plate, the adapter and the runner groove are used in cooperation, the runner plate is kept in a low state in the injection molding process by controlling the temperature of the runner plate, and therefore excessive vulcanization of a sizing material in the runner plate is avoided, and in this way, after vulcanization of a product is completed, the temperature of the runner plate is controlled to be higher than that of the runner plate. The rubber material in the runner plate still keeps plasticity and can be easily and continuously vulcanized, the rubber material waste is obviously reduced, the utilization rate of the rubber material is improved, and the rubber material in the runner plate can be continuously put into production after each mold is finished, so that the waste material is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicone rubber production, specifically to a silicone rubber injection mold cold runner system. BACKGROUND

[0002] The silicone rubber product is the product that is made by mixing, sheeting, filtering, adding sulfur, mold pressing, extruding, bonding etc. production process with methyl vinyl silicone rubber as base glue and adding various fillers (such as reinforcing agent, heat resistance agent, modifier etc. ), and the silicone rubber product has multiple excellent performances and wide application field, is an indispensable material in modern society, with the progress of science and technology and the change of market, the development trend of silicone rubber product will be more diversified and intelligent, in the production process of silicone rubber product, the design and manufacturing technology of injection mold plays a vital role.

[0003] The existing hot runner mold improves the filling efficiency of material and the forming quality of product to some extent, but its inherent defects cannot be ignored, especially after the vulcanization of silicone rubber is finished, the runner part of hot runner mold is completely cooked as the product, which means that the rubber material inside the runner cannot be vulcanized again and can only be treated as waste, which causes a large amount of glue waste and increases the production cost, therefore, we need to provide a silicone rubber injection mold cold runner system. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a silicone rubber injection mold cold runner system, which aims at solving the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A silicone rubber injection mold cold runner system, which comprises a runner plate, a plurality of groups of adapter pieces are embedded in the inside of the runner plate, the adapter pieces comprise three-way adapter nozzles and two-way adapter nozzles, a runner groove is formed in the inner cavity of the runner plate, the three-way adapter nozzles and the two-way adapter nozzles are communicated with the runner groove, the three-way adapter nozzles are arranged at the intersection of the runner groove, a first heat insulation plate is fixedly connected to the bottom of the runner plate, and a heating plate is fixedly connected to the bottom of the first heat insulation plate.

[0007] Preferably, a mounting groove is formed in the top of the runner plate, a sprue bush is fixedly embedded in the inside of the mounting groove, and a plurality of waterway holes are formed in the runner plate.

[0008] Preferably, the utility model further comprises two groups of second heat insulation plates, and the two groups of second heat insulation plates are fixedly connected to the two side walls of the heating plate respectively.

[0009] Preferably, the bottom of the heating plate is inserted with a positioning pin, the top of the positioning pin penetrates through the first heat insulation plate and is inserted into the inside of the flow channel plate.

[0010] Preferably, one side of the heating plate is provided with a junction box, the junction box is fixedly installed on the side wall of one group of the second heat insulation plates.

[0011] Preferably, the bottom of the heating plate is provided with a plurality of groups of positioning holes, the inside of the plurality of groups of positioning holes is respectively fixedly embedded with a nozzle.

[0012] Preferably, the top of the plurality of groups of nozzles penetrates through the heating plate, and the top of the plurality of groups of nozzles is respectively communicated with the bottom of the plurality of groups of two-way adapter nozzles.

[0013] Preferably, the bottom of the heating plate is provided with a plurality of groups of mounting holes, the inside of the plurality of groups of mounting holes is respectively mounted with an electric heating tube.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a first heat insulation plate is set up, and the heat insulation effect is played, can prevent the heat of heating plate to transfer to the flow channel plate on the top, to prevent the temperature of the inside of flow channel plate to be too high in this way, through the cooperation of flow channel plate, adapter and flow channel groove, through the temperature of flow channel plate is controlled, makes it keep lower state in injection molding process, thereby avoids the overcuring of rubber material in flow channel plate, in this way, when product vulcanization is completed, the rubber material in flow channel plate still keeps plasticity, can continue vulcanization treatment to it easily, the utility model discloses significantly reduced the waste of rubber material, improved the utilization of rubber material, and the rubber material in flow channel plate can be continued to be put into production after every mould production is finished, thereby reduce the generation of waste material. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the structural schematic diagram of the utility model axle side;

[0018] Figure 3 It is the structural schematic diagram of the utility model flow channel plate and adapter;

[0019] Figure 4 It is the structural schematic diagram of the utility model flow channel plate, heat insulation plate and heating plate.

[0020] In the figure: 1, flow channel plate; 2, adapter; 201, three-way adapter nozzle; 202, two-way adapter nozzle; 3, flow channel groove; 4, first heat insulation plate; 5, heating plate; 6, mounting groove; 7, sprue bushing; 8, second heat insulation plate; 9, positioning pin; 10, junction box; 11, positioning hole; 12, nozzle; 13, mounting hole; 14, waterway hole. DETAILED DESCRIPTION

[0021] 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.

[0022] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0023] A silicon rubber injection mold cold runner system, including flow channel plate 1, the inside of flow channel plate 1 is embedded with several groups of adapter 2, adapter 2 includes three-way adapter nozzle 201 and two-way adapter nozzle 202, the inner chamber of flow channel plate 1 is provided with flow channel groove 3, three-way adapter nozzle 201 and two-way adapter nozzle 202 are communicated with flow channel groove 3, three-way adapter nozzle 201 is located at the intersection of flow channel groove 3, the bottom of flow channel plate 1 is fixedly connected with first heat insulation plate 4, the bottom of first heat insulation plate 4 is fixedly connected with heating plate 5, by setting first heat insulation plate 4, the heat insulation effect is achieved, can prevent the heat of heating plate 5 from being transmitted to the top of flow channel plate 1, to prevent the temperature inside flow channel plate 1 from being too high, by setting the cooperation of flow channel plate 1, adapter 2 and flow channel groove 3, by controlling the temperature of flow channel plate 1, it is kept in a lower state during injection molding, thereby avoiding the over-vulcanization of the rubber material in flow channel plate 1, so that the rubber material in flow channel plate can be easily vulcanized after vulcanization, the utility model significantly reduces the waste of rubber material and improves the utilization rate of rubber material, the rubber material in flow channel plate 1 can be continuously used in production after each mold production, thereby reducing the generation of waste materials.

[0024] Further, the top of flow channel plate 1 is provided with mounting groove 6, sprue bushing 7 is fixedly embedded in the inside of mounting groove 6, a plurality of waterway holes 14 are formed in flow channel plate 1, by setting a plurality of waterway holes 14, the cold liquid in waterway hole 14 can take away the heat on flow channel plate 1 during actual use, so as to control the temperature of flow channel plate 1 within a suitable range, thereby avoiding the curing of the rubber material in flow channel plate 1.

[0025] It is worth mentioning that two groups of second heat insulation plates 8 are also included, and the two groups of second heat insulation plates 8 are fixedly connected to the two side walls of the heating plate 5 respectively, and the second heat insulation plates 8 play a role of heat insulation for the heating plate 5 by being arranged;

[0026] Further, the bottom of the heating plate 5 is inserted with a positioning pin 9, the top of the positioning pin 9 penetrates through the first heat insulation plate 4 and is inserted into the inside of the runner plate 1, and the positioning pin 9 plays a role of positioning connection between the cold runner system and the mold (not shown in the figure) by being arranged;

[0027] Further, one side of the heating plate 5 is provided with a junction box 10, the junction box 10 is fixedly installed on one side wall of one group of second heat insulation plates 8, and the junction box 10 plays a role of protection for the wires extended by the electric heating tube and the thermocouple, is made of aluminum alloy material, and the heat of the heating plate 5 can be avoided from being transferred to the inside of the junction box 10 by arranging the second heat insulation plate 8;

[0028] Further, the bottom of the heating plate 5 is provided with a plurality of groups of positioning holes 11, the inside of the plurality of groups of positioning holes 11 is respectively fixedly embedded with a nozzle 12, the top end of the plurality of groups of nozzles 12 penetrates through the heating plate 5, and the top of the plurality of groups of nozzles 12 is respectively communicated with the bottom of the plurality of groups of two-way adapter nozzles 202, and the nozzles 12 play a role of injecting the glue into the inside of the mold cavity by being arranged;

[0029] In addition, the bottom of the heating plate 5 is provided with a plurality of groups of mounting holes 13, the inside of the plurality of groups of mounting holes 13 is respectively installed with an electric heating tube, the electric heating tube can heat the heating plate 5, and the heating effect and efficiency mainly depend on the specification and arrangement of the electric heating tube, the thermal conductivity of the first heat insulation plate 4 on the top of the heating plate 5 needs to be below 0.5 W / mk, and the heat resistance needs to be above 200 DEG C, so that the heat transmitted upward by the heating plate 5 can be effectively blocked, and the temperature of the runner plate 1 is avoided from being too high.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cold runner system for a silicone rubber injection mold, comprising a runner plate (1), characterized in that: The flow channel plate (1) is internally fitted with several sets of adapters (2). The adapters (2) include a three-way adapter nozzle (201) and a two-way adapter nozzle (202). The inner cavity of the flow channel plate (1) is provided with a flow channel groove (3). The three-way adapter nozzle (201) and the two-way adapter nozzle (202) are connected to the flow channel groove (3). The three-way adapter nozzle (201) is located at the intersection of the flow channel groove (3). The bottom of the flow channel plate (1) is fixedly connected to a first heat insulation plate (4). The bottom of the first heat insulation plate (4) is fixedly connected to a heating plate (5).

2. The cold runner system for a silicone rubber injection mold according to claim 1, characterized in that: The top of the flow channel plate (1) is provided with an installation groove (6), and a sprue sleeve (7) is fixedly embedded inside the installation groove (6). The flow channel plate (1) is provided with a plurality of water passage holes (14).

3. The cold runner system for a silicone rubber injection mold according to claim 1, characterized in that: It also includes two sets of second heat insulation plates (8), which are fixedly connected to the two side walls of the heating plate (5).

4. The cold runner system for a silicone rubber injection mold according to claim 1, characterized in that: The bottom of the heating plate (5) is fitted with a positioning pin (9), and the top of the positioning pin (9) passes through the first heat insulation plate (4) and is inserted into the interior of the flow channel plate (1).

5. A cold runner system for silicone rubber injection molds according to claim 3, characterized in that: A junction box (10) is provided on one side of the heating plate (5), and the junction box (10) is fixedly installed on one side wall of one of the second heat insulation plates (8).

6. The cold runner system for a silicone rubber injection mold according to claim 1, characterized in that: The bottom of the heating plate (5) is provided with several sets of positioning holes (11), and nozzles (12) are fixedly embedded in the interior of the several sets of positioning holes (11).

7. A cold runner system for a silicone rubber injection mold according to claim 6, characterized in that: The top of each of the several sets of nozzles (12) passes through the heating plate (5), and the top of each of the several sets of nozzles (12) is connected to the bottom of each of the several sets of two-way adapter nozzles (202).

8. A cold runner system for silicone rubber injection molds according to claim 1, characterized in that: The bottom of the heating plate (5) is provided with several sets of mounting holes (13), and electric heating tubes are installed inside the several sets of mounting holes (13).

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