Circulating hot water supply device for injection mold

Abstract

The utility model discloses a circulating hot water supply device for an injection mold, which comprises a mounting box, a heating pipe fixedly connected to the bottom surface in the mounting box, a heating rod communicated in the heating pipe, a water pump fixedly connected in the mounting box, a water inlet main pipe connected with a circulating water inlet pipe and a conduit connected with the heating pipe, the heating pipe is connected with a water outlet main pipe, the water outlet main pipe is connected with an overflow pipe, and the overflow pipe is connected with an electromagnetic overflow valve. Hot water in the heating pipe circularly flows through the injection mold through the water pump to heat the injection mold, when water in the heating pipe and other water pipes evaporates, the pressure in the pipe is increased, the electromagnetic overflow valve senses the pressure, the valve is opened, a certain amount of water is discharged, the pressure in the pipe is reduced, manual operation is not needed, real-time monitoring is achieved, the workload is reduced, and the production efficiency is improved. And meanwhile, compared with negligence caused by worker monitoring, the detection effect through the electromagnetic valve is better, and the safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field especially relates to a kind of injection mold circulating hot water device. BACKGROUND

[0002] The temperature of injection mold can have certain influence on the fluidity and forming quality of product, appropriately improve the temperature of mold, can make the viscosity of plastic inside it reduce, fluidity enhances, easy to fill mold cavity.This helps to improve the filling effect of plastic, reduces the problem of underfilling or part surface roughness, mold temperature determines the cooling rate and shrinkage of plastic in mold cavity.

[0003] Generally, water is heated through the heating pipe of hot water supply device, then hot water is brought into mold by water pump, and the water is cooled and then returned to heating pipe to be heated again, a drain pipe and a pressure gauge are connected to the heating pipe, when water in the heating pipe evaporates, the internal pressure increases, the pressure gauge shows the pressure in the heating pipe, and the worker removes a certain amount of water by opening the drain pipe to reduce the internal pressure of the heating pipe, since it is manually operated, it needs to be monitored in real time, thereby increasing the workload, and manual monitoring is easy to be neglected, and the safety hazard is relatively large. SUMMARY

[0004] The utility model aims at providing a kind of injection mold circulating hot water device, has the advantage for solving the above-mentioned problem.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] Including installation box, the bottom surface in installation box is fixedly connected with heating pipe, heating rod is passed in heating pipe, and water pump is fixedly connected in installation box, the water pump is connected with water inlet main pipe and conduit, the water inlet main pipe is connected with circulating water inlet pipe, and the water inlet of circulating water inlet pipe is worn out installation box side wall, the conduit is connected with heating pipe, the water outlet main pipe is connected on heating pipe, the overflow pipe is connected on the water outlet main pipe, the electromagnetic overflow valve is connected on the overflow pipe, and the water outlet of water outlet main pipe and overflow pipe is worn out installation box outer wall.

[0007] The above technical scheme is adopted, the heating rod of heating pipe heats the water in it, the water pump drives hot water to enter injection mold through water outlet main pipe, while the water cooled in injection mold is pumped out, in turn enters heating pipe through circulating water inlet pipe and water inlet main pipe, and is heated again, when water in heating pipe and other water pipes evaporates, the pressure in pipe increases, the electromagnetic overflow valve senses the pressure, the valve is opened, a certain amount of water is discharged, and the pressure in pipe is reduced, without manual operation and real-time monitoring, thereby reducing the workload, and compared with worker monitoring, the detection effect of electromagnetic valve is better, and the safety is higher.

[0008] As preferred, a water adding pipe is connected to the water inlet main pipe, and a water level probe is connected to the heating pipe, and the water level probe is electrically connected to the controller.

[0009] With the above technical scheme, the water level probe detects the water level in the heating pipe, and the water level monitoring result is displayed on the controller. When the controller displays that the water level in the heating pipe is low, the water adding pipe is connected to the external water tank, and the water pump draws the water in the external water tank into the heating pipe through the water adding pipe, so that the water amount in the heating pipe is kept in an appropriate range, thereby ensuring the heating effect on the injection mold.

[0010] As preferred, a drain pipe is connected to the heating pipe, a valve is connected to the drain pipe, and a pressure gauge is connected to the water outlet main pipe through a connecting pipe.

[0011] With the above technical scheme, when the injection machine stops working and does not need to inject hot water into the mold, the valve of the drain pipe is opened, the water in the heating pipe and each water pipe is drained, the inside of the heating pipe can be repaired, and then water is injected into the pipe through the water adding pipe.

[0012] As preferred, a plurality of pipe joints are connected to the circulation water inlet pipe and the water outlet main pipe, respectively, and the number of pipe joints on the two pipe joints is the same.

[0013] With the above technical scheme, the molds of multiple injection machines can be cyclically injected and heated.

[0014] As preferred, universal wheels are connected to the bottom of the installation box.

[0015] With the above technical scheme, the overflow pipe and the connecting pipe are copper pipes.

[0016] As preferred, when the water in the heating pipe flows into the overflow pipe and the connecting pipe, the heat dissipation is accelerated, and damage to the pressure gauge and the electromagnetic overflow valve caused by high water temperature is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a whole schematic view of the embodiment;

[0018] Fig. 2 It is a front schematic view of the embodiment;

[0019] Fig. 3 It is a top view of the embodiment;

[0020] Fig. 4 It is a side schematic view of the internal structure of the installation box;

[0021] Fig. 5 It is a whole schematic view of the internal structure of the installation box;

[0022] Fig. 6 Figure 1 is a schematic view of the internal structure of the heating pipe.

[0023] Figure 1 is a schematic view of the internal structure of the heating pipe. DETAILED DESCRIPTION

[0024] The following description is only a preferred embodiment of the present application, the protection scope is not limited to the embodiment, any technical solution falling within the concept of the present application should fall within the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, some improvements and refinements should be considered as the protection scope of the present application.

[0025] See Figs. 1 to 6 A kind of injection mold circulating hot water device for heating, including installation box 1, installation box 1 bottom is connected with universal wheel 17.The bottom surface of installation box 1 is fixedly connected with heating pipe 2, heating pipe 2 is connected with heating rod 3 in it.And installation box 1 is fixedly connected with water pump 4, water pump 4 is connected with water inlet main pipe 5 and guide pipe, water inlet main pipe 5 is connected with circulating water inlet pipe 6 and water pipe 10, circulating water inlet pipe 6 and water pipe 10 inlet are from the side wall of installation box 1, water level probe 11 is connected in heating pipe 2, water level probe 11 is electrically connected with controller, guide pipe is connected with heating pipe 2.Heating pipe 2 is connected with water outlet main pipe 7 and drain pipe 12, circulating water inlet pipe 6 mouth and water outlet main pipe 7 mouth are connected with multiple pipe joints 16 respectively, and the number of pipe joint 16 on the two pipe mouths is same, and water outlet main pipe 7 is connected with pressure gauge 15 by connecting pipe 14, and pressure gauge 15 is fixed on the side wall of installation box 1, and the display screen of pressure gauge 15 faces the outside of installation box 1.Water outlet main pipe 7 is connected with overflow pipe 8, overflow pipe 8 and connecting pipe 14 are copper pipes, so that when water in heating pipe 2 flows into overflow pipe 8 and connecting pipe 14, heat dissipation can be accelerated, to prevent that water temperature is high to cause damage to pressure gauge 15 and electromagnetic overflow valve 9, and the pipe opening of water outlet main pipe 7 and overflow pipe 8 is from the side wall of installation box 1, overflow pipe 8 is connected with electromagnetic overflow valve 9, drain pipe 12 is connected with valve 13, and the water outlet of drain pipe 12 is from the side wall of installation box 1.

[0026] Working principle: the installation box 1 on the circulating water inlet pipe 6 and water outlet main pipe 7 and injection mold, heating pipe 2 heating rod 3 to its internal water heating, water pump 4 drive hot water through the water outlet main pipe 7 into injection mold. At the same time, the cooling water in the injection mold is extracted, in turn through the circulating water inlet pipe 6, water inlet pipe 5 into heating pipe 2, reheat. When the heating pipe 2 and other water pipes in the water evaporation, the pressure in the pipe increases, electromagnetic overflow valve 9 feel pressure, valve 13 automatically open, discharge a certain amount of water, reduce the pressure in the pipe, without manual operation and real-time monitoring, reduce the workload, at the same time relative to the workers will appear loose, through the detection effect of electromagnetic valve is better, higher safety. Water level probe 11 in the heating pipe 2 water level detection, water level monitoring results in the controller is displayed, when the controller shows that the water level in the heating pipe 2 is low, make water pipe 10 and external water tank connection, water pump 4 through the water pipe 10 water tank in the water is pumped into the heating pipe 2, make the water in the heating pipe 2 in the appropriate range, so as to ensure the heating effect of injection mold, at the same time, the water injection can be from the electromagnetic overflow valve 9 water pipe in the air from the electromagnetic overflow valve 9, prevent the pipe pressure increases. When the injection molding machine stops working, do not need to inject hot water into the mold, open the drain pipe 12 valve 13, discharge from the heating pipe 2 and each water pipe, can be carried out in the heating pipe 2 inside repair, after again through the water pipe 10 to the pipe water.

Claims

1. A circulating hot water supply device for injection molds, comprising an installation box (1), wherein a heating pipe (2) is fixedly connected to the bottom surface of the installation box (1), a heating rod (3) passes through the heating pipe (2), and a water pump (4) is fixedly connected inside the installation box (1), wherein the water pump (4) is connected to a main water inlet pipe (5) and a conduit, the main water inlet pipe (5) is connected to a circulating water inlet pipe (6), the inlet of the circulating water inlet pipe (6) extends out of the side wall of the installation box (1), the conduit is connected to the heating pipe (2), and a main water outlet pipe (7) is connected to the heating pipe (2), characterized in that, The main water outlet pipe (7) is connected to an overflow pipe (8), and an electromagnetic overflow valve (9) is connected to the overflow pipe (8). The outlets of the main water outlet pipe (7) and the overflow pipe (8) extend out of the outer wall of the mounting box (1).

2. The circulating hot water supply device for injection molds according to claim 1, characterized in that, The main water inlet pipe (5) is connected to a water supply pipe (10), and the heating pipe (2) is connected to a water level probe (11), which is electrically connected to a controller.

3. The circulating hot water supply device for injection molds according to claim 1, characterized in that, The heating tube (2) is connected to a drain pipe (12), the drain pipe (12) is connected to a valve (13), and the water outlet main pipe (7) is connected to a pressure gauge (15) via a connecting pipe (14).

4. The circulating hot water supply device for injection molds according to claim 1, characterized in that, The circulating water inlet pipe (6) and the water outlet pipe (7) are respectively connected to multiple pipe joints (16), and the number of pipe joints (16) on the two pipe openings is the same.

5. A circulating hot water supply device for injection molds according to claim 1, characterized in that, The bottom of the mounting box (1) is connected to casters (17).

6. A circulating hot water supply device for injection molds according to claim 1, characterized in that, The overflow pipe (8) and the connecting pipe (14) are copper pipes.

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