Anti-wiredrawing mechanism of injection molding hot runner mold

Abstract

The utility model provides an anti-wiredrawing mechanism for an injection molding hot runner mold, which comprises a hot runner frame, an electric junction box arranged at the top of the hot runner frame, a splitter plate arranged in the hot runner frame and used for splitting plastic hot flow, and a plurality of splitter pipes communicated with the inner wall of the splitter plate and used for splitting plastic, one end of the flow dividing pipe is communicated with a lengthened nozzle head used for reducing the plastic output amount, and an R-shaped corner used for preventing redundant plastic from entering a mold cavity is arranged at the joint of the lengthened nozzle head and the flow dividing pipe. The anti-wiredrawing mechanism of the injection molding hot runner mold provided by the utility model solves the problems that the purpose of preventing wiredrawing of a hot runner is generally achieved by reducing the temperature of the hot runner in the existing anti-wiredrawing mechanism of the injection molding hot runner mold, but the hot runner cannot eject glue after the temperature of the hot runner is reduced, or the flowability of glue is poor during glue ejection, so that the service life of the hot runner is prolonged. And even the product cannot be manufactured after the hot runner hole is blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot runner mold field especially relates to injection hot runner mold prevents the mechanism of silk. BACKGROUND

[0002] Hot runner mold refers to the use of heating device makes runner inside melt always does not solidify's mold. Because it compares the traditional mold forming cycle to be short, and more saving raw material, so hot runner mold in today's world each industrial developed country and region all obtains very extensive application. Hot runner system generally by hot nozzle, shunt board, temperature control box and accessory etc. several parts constitute. At present, known injection mold open type hot runner often appears silk phenomenon in the using process, this silk if does not clean in time will cause the risk of mold pressing mold very high, thereby greatly increased the maintenance cost of mold, makes the production cannot proceed smoothly.

[0003] The existing injection hot runner mold prevents the mechanism of silk, generally through reducing hot runner temperature to reach the purpose of preventing hot runner silk. However, some hot runners will cause hot runner to not shoot out glue after reducing the temperature, or the glue flowability is poor when shooting glue, or even the problem of not making products after blocking the hot runner hole.

[0004] Therefore, it is necessary to provide a new injection hot runner mold prevents the mechanism of silk to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides an injection hot runner mold prevents the mechanism of silk of preventing hot runner injection silk.

[0006] The injection hot runner mold prevents the mechanism of silk provided by the utility model, including hot runner frame, the top of hot runner frame is provided with the electric terminal box that is used for converting electric energy into heat energy to heat its inside, the inside of hot runner frame is provided with the shunt board that is used for shunting plastic hot flow, the inner wall of shunt board is communicated with a plurality of shunt pipes that are used for shunting plastic, one end of shunt pipe is communicated with the lengthened nozzle head that is used for reducing plastic glue output, the lengthened nozzle head and shunt pipe connection place are provided with R shape angle that is used for preventing extra plastic into mold cavity.

[0007] As the injection hot runner mold prevents the mechanism of silk provided by the utility model, preferably, one side of hot runner frame is provided with the panel that is used for sealing it, the material quality of hot runner frame and panel all sets up as alloy steel.

[0008] As the injection hot runner mold prevents the mechanism of silk provided by the utility model, preferably, one side of panel is installed with heat insulation plate through screw, the material quality of heat insulation plate sets up as silicon rubber plate.

[0009] The utility model provides an injection hot runner die anti -wire drawing mechanism, preferably, the inner wall of heat insulation board is equipped with a plurality of through -hole, the inner wall of through -hole is provided with the bolt for the panel and hot runner frame assembly.

[0010] The utility model provides an injection hot runner die anti -wire drawing mechanism, preferably, one side of hot runner frame is provided with the nameplate groove for embodying enterprise brand, the nameplate groove is installed through screw nameplate body.

[0011] The utility model provides an injection hot runner die anti -wire drawing mechanism, preferably, the top of panel is fixed with the gas valve box for accurate control plastic flow and temperature, the material quality of gas valve box is set up stainless steel.

[0012] The utility model provides an injection hot runner die anti -wire drawing mechanism, preferably, the inner wall of panel and heat insulation board is provided with flange, the inner wall of flange is provided with main runner nozzle.

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

[0014] The injection hot runner die anti -wire drawing mechanism adds the undulating structure on the shunt nozzle, uses R shape angle and connects the shunt pipe with the lengthened nozzle head, reduces the glue amount when plastic material passes through the nozzle head, prevents the extra plastic from entering the mold cavity when the pressure is kept during injection, and reduces the risk of mold injection after wire drawing. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic view of the back of the injection hot runner die anti -wire drawing mechanism in the utility model;

[0016] Figure 2 It is the structure schematic view of the front of the injection hot runner die anti -wire drawing mechanism in the utility model;

[0017] Figure 3 It is the explosion schematic view of the injection hot runner die anti -wire drawing mechanism in the utility model;

[0018] Figure 4 It is Figure 3 The structure schematic view of the enlarged structure in A place in the utility model;

[0019] Figure 5 It is the structure schematic view of the inside of flange in the utility model.

[0020] Marked number in drawing: 1, hot runner frame;2, electric junction box;3, shunt plate;4, shunt pipe;5, lengthened nozzle head;6, R shape angle;7, panel;8, heat insulation board;9, through -hole;10, bolt;11, nameplate groove;12, gas valve box;13, flange;14, main runner nozzle. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and embodiments.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 5 , wherein Figure 1 It is the structure diagram of the back of the anti-wire-drawing mechanism of the injection hot runner mold of the utility model; Figure 2 It is the structure diagram of the front of the anti-wire-drawing mechanism of the injection hot runner mold of the utility model; Figure 3 It is the explosion diagram of the anti-wire-drawing mechanism of the injection hot runner mold of the utility model; Figure 4 It is the structure diagram of the enlarged A place in Figure 3 ; Figure 5 It is the structure diagram of the inside of the flange of the utility model. The anti-wire-drawing mechanism of the injection hot runner mold comprises a hot runner frame 1, the top of the hot runner frame 1 is provided with an electric terminal box 2 for converting electric energy into heat energy to heat the inside, the inside of the hot runner frame 1 is provided with a shunt plate 3 for shunting plastic hot flow, the inner wall of the shunt plate 3 is communicated with a plurality of shunt pipes 4 for shunting plastic, one end of the shunt pipe 4 is communicated with an elongated nozzle head 5 for reducing the plastic glue output, and the connecting place of the elongated nozzle head 5 and the shunt pipe 4 is provided with an R-shaped corner 6 for preventing excess plastic from entering the mold cavity.

[0023] In the specific implementation process, as shown in Figures 1 to 5 , one side of the hot runner frame 1 is provided with a panel 7 for sealing it, and the material of the hot runner frame 1 and the panel 7 is set as alloy steel.

[0024] One side of the panel 7 is provided with a heat insulation plate 8 installed through a screw, and the material of the heat insulation plate 8 is set as a silicone rubber plate.

[0025] A plurality of through holes 9 are formed in the inner wall of the heat insulation plate 8, and the inner wall of the through hole 9 is provided with a bolt 10 for assembling the panel 7 and the hot runner frame 1.

[0026] One side of the hot runner frame 1 is provided with a nameplate slot 11 for reflecting the enterprise brand, and a nameplate body is installed on the nameplate slot 11 through a screw.

[0027] The top of the panel 7 is fixed with a gas valve box 12 for accurately controlling the plastic flow and temperature, and the material of the gas valve box 12 is set as stainless steel.

[0028] The inner walls of the panel 7 and the heat insulation plate 8 are provided with a flange 13, and the inner wall of the flange 13 is provided with a main runner nozzle 14.

[0029] It needs to be explained: by setting the hot runner frame 1 can be assembled inside the flow distribution plate 3, by setting the electric junction box 2 for converting electrical energy into heat energy for hot runner frame 1 inside heating, by setting the flow distribution plate 3 and flow distribution pipe 4 for the plastic hot flow distribution, flow distribution plate 3 includes main runner plate and flow distribution plate, by setting the length of the nozzle 5 and R-shaped corner 6 can let the plastic material through the nozzle when the glue amount is reduced, thereby effectively preventing the excess plastic from the mold cavity when the injection pressure is out, thereby reducing the risk of mold injection after the wire drawing pressure mold, by setting the panel 7 can be sealed hot runner frame 1, hot runner frame 1 and the material of the panel 7 are set to be alloy steel, by setting the heat insulation plate 8 can prevent the excessive consumption of molten plastic in the flow channel and nozzle, thereby improving the quality and production efficiency of the molded product, the material of the heat insulation plate 8 is set to be silicone rubber plate, which has good heat insulation performance, high temperature resistance, corrosion resistance and other characteristics, and also has good elasticity and flexibility, suitable for high temperature molten plastic production, by setting a plurality of through holes 9 and bolts 10 can facilitate the assembly and disassembly of the panel 7 and the hot runner frame 1, by setting the nameplate groove 11 can install the nameplate body reflecting the enterprise brand, by setting the gas valve box 12 can control the flow of gas in the molding process in the plastic injection, it can accurately control the flow, speed and direction of the gas flow, avoid the disorderly flow of gas in the molding process and the influence on the product, can effectively reduce the bubble rate, surface defects and residual stress of the product, improve the quality and stability of the product, and also can prolong the service life of the mold, the material of the gas valve box 12 is stainless steel, which has the advantages of corrosion resistance, high temperature resistance, wear resistance, high strength and the like, by setting the flange 13 can facilitate the sealing installation of the main runner nozzle 14, by setting the main runner nozzle 14 can inject plastic.

[0030] The working principle of the anti-wire-drawing mechanism of the injection molding hot runner mold is as follows:

[0031] In use, the hot runner frame 1 is powered through the electric junction box 2, providing electrical energy for the heating wires of the main runner plate, the flow distribution plate and the hot nozzle in the hot runner frame 1, and the heating wires convert the electrical energy into heat energy to provide heat for the main runner plate, the flow distribution plate and the hot nozzle, so that the main runner plate, the flow distribution plate and the hot nozzle generate heat. In the injection molding process, when the plastic injected by the main runner nozzle 14 of the injection molding machine enters the inside of the hot runner frame 1, the plastic absorbs the heat in the hot runner frame 1, so that the process of the injection molding material flowing through the hot runner main runner plate, the flow distribution plate and the hot nozzle will not become poor due to temperature dissipation, but will have excellent flowability because of the same high temperature in the hot runner frame 1. The needle valve hot runner heats the main runner plate, the flow distribution plate and the flow distribution nozzle through the electric junction box 2, so that the plastic flowing into the hot runner is heated, so that the injection molding material does not lose heat and has faster flowability than ordinary injection molding material, so that the injection molding machine can easily inject plastic into the mold cavity without too much pressure.

[0032] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A hot runner injection mold anti-drawing mechanism, characterized in that, Include: Hot runner frame (1), the top of the hot runner frame (1) is provided with an electrical terminal box (2) for converting electrical energy into heat energy to heat its inside, the inside of the hot runner frame (1) is provided with a shunt plate (3) for shunting plastic hot flow, the inner wall of the shunt plate (3) is communicated with a plurality of shunt pipes (4) for shunting plastic, one end of the shunt pipe (4) is communicated with an elongated nozzle (5) for reducing the amount of plastic glue, the elongated nozzle (5) is provided with an R-shaped corner (6) for preventing excess plastic from entering the mold cavity at the connection between the elongated nozzle (5) and the shunt pipe (4).

2. The anti-drag mechanism for hot-runner injection molding of claim 1, wherein, One side of the hot runner frame (1) is provided with a panel (7) for sealing it, the material of the hot runner frame (1) and the panel (7) is set to be alloy steel.

3. The anti-drag mechanism for hot-runner injection molding tools according to claim 2, characterized in that, One side of the panel (7) is provided with a heat insulation plate (8) installed by screws, the material of the heat insulation plate (8) is set to be a silicone rubber plate.

4. The anti-pulling mechanism for hot-runner injection mold according to claim 3, wherein, A plurality of through holes (9) are formed in the inner wall of the heat insulation plate (8), and a bolt (10) is arranged on the inner wall of the through hole (9) for assembling the panel (7) and the hot runner frame (1).

5. The anti-drag mechanism for hot-runner injection molding tools according to claim 4, characterized in that, One side of the hot runner frame (1) is provided with a nameplate slot (11) for embodying the enterprise brand, and a nameplate body is installed on the nameplate slot (11) by screws.

6. The anti-drag mechanism for hot-runner injection molding of claim 4, wherein, The top of the panel (7) is fixed with an air valve box (12) for accurately controlling the flow and temperature of plastic, and the material of the air valve box (12) is set to be stainless steel.

7. The anti-drag mechanism for hot-runner injection molding according to claim 4, wherein The inner walls of the panel (7) and the heat insulation plate (8) are provided with flanges (13), and the inner walls of the flanges (13) are provided with main runner nozzles (14).

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