Efficient energy-saving injection mold heating device

Abstract

The utility model relates to the technical field of injection molds, and discloses an efficient energy-saving injection mold heating device which comprises an equipment table, a mold fixed seat is fixedly connected to the left middle side of the top end of the equipment table, a mold movable seat is fixedly connected to the middle side of the top end of the equipment table, and a heat preservation box is fixedly connected to the middle side of the top of the left end of the mold fixed seat. A spiral heating pipe is fixedly connected to the left middle portion of the inner side of the heat preservation box, a heat dissipation box is fixedly connected to the left side of the front end of the equipment table, an oil storage box is fixedly connected to the middle of the front end of the equipment table, and a variable frequency motor is fixedly connected to the front portion of the inner side of the heat dissipation box. The heated heating oil is pumped into the inner cavity heating pipe of the injection mold through the oil hydraulic pump, the preheated heating oil preheats plastic particles in the trough through the spiral pipeline, the energy utilization rate is increased, the heating oil is controlled by starting and stopping of the cooling fan to conduct heating or cooling, the mold temperature can be rapidly adjusted, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a high-efficiency and energy-saving injection mold heating device. Background Art

[0002] In terms of social needs, with the acceleration of industrialization and the improvement of people's living standards, the demand for plastic products has increased dramatically. Plastic products, with their advantages of light weight, low cost, and diverse performance, are widely used in various fields such as home appliances, automobiles, packaging, and medical applications. This huge market demand has driven the continuous improvement and refinement of injection molding technology to enhance production capacity and product quality. At the same time, growing environmental awareness has also placed new demands on injection molding technology, prompting the industry to develop and apply more environmentally friendly plastic materials and optimize injection molding processes to reduce energy consumption and waste emissions.

[0003] The structure of an injection mold generally includes the following components: Molding element: Typically composed of a core (punch) and a concave mold cavity. The core forms the inner surface of the part, while the cavity defines the outer shape. The gating system: This is the passage through which the plastic melt flows from the injection molding machine nozzle into the closed mold cavity. It primarily consists of a main runner, branch runners, a gate, and a cold well. The guide components: These consist of guide pins and guide bushings. Their function is to ensure precise alignment between the movable and fixed molds during closing, providing guidance and positioning. The demolding mechanism: This is the device that releases the plastic part from the gating system. It typically consists of an ejector pin, a return pin, a spring, an ejector pin retaining plate, an ejector plate (ejector ring), and ejector plate guide pins / guide bushings. The temperature control system: This is designed to meet the mold temperature requirements of the injection molding process. For thermoplastic injection molds, the primary focus is on designing a cooling system to keep the mold cool. The exhaust system: This is used to remove air from the cavity and gases introduced by the plastic melt during the injection molding process to avoid problems such as air holes, poor welds, and incomplete mold filling.

[0004] When existing injection molds are used to produce plastic parts, they need to be preheated to prevent large temperature differences between hot and cold during injection molding, which can easily produce a large number of defective products. However, existing mold heating devices convert a large amount of energy into heat loss, which increases production costs. In addition, during the production process, the heating device responds slowly to temperature changes. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a high-efficiency and energy-saving injection mold heating device, which aims to improve the problems of low energy utilization efficiency and slow temperature change response speed of injection mold heating devices in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an efficient and energy-saving injection mold heating device, comprising an equipment table, a mold fixing seat is fixedly connected to the left middle side of the top of the equipment table, a mold movable seat is fixedly connected to the middle side of the top of the equipment table, an insulation box is fixedly connected to the middle side of the left top of the mold fixing seat, a spiral heating tube is fixedly connected to the left middle part of the inner side of the insulation box, a heat dissipation box is fixedly connected to the left side of the front end of the equipment table, an oil storage tank is fixedly connected to the middle of the front end of the equipment table, a frequency conversion motor is fixedly connected to the front end of the heat dissipation box, a cooling fan is rotatably connected to the middle of the front end of the frequency conversion motor, cooling fins are fixedly connected to the middle and rear of the inner side of the heat dissipation box, and a circulating oil pump is fixedly connected to the rear end of the heat dissipation box.

[0007] As a further description of the above technical solution:

[0008] A hydraulic rack is fixedly connected to the right middle part of the top of the equipment table, a hydraulic seat is fixedly connected to the middle of the right end of the hydraulic rack, a hydraulic telescopic rod is slidably connected to the inner side of the hydraulic seat, the right end of the hydraulic telescopic rod is fixedly connected to the pushing seat, and the four corners of the left end of the pushing seat are fixedly connected to moving rods.

[0009] As a further description of the above technical solution:

[0010] The right end of the mold fixing seat is fixedly connected to the injection mold assembly, the left end of the mold movable seat is fixedly connected to the injection mold assembly, and a heating cavity is opened inside the injection mold assembly.

[0011] As a further description of the above technical solution:

[0012] A protective net is fixedly connected to the middle part of the front end of the heat dissipation box.

[0013] As a further description of the above technical solution:

[0014] The oil storage tank, the heat dissipation fins, the circulating oil pump, the spiral heating pipe and the injection mold assembly are connected through an oil guide pipe.

[0015] As a further description of the above technical solution:

[0016] A material delivery rack is fixedly connected to the middle left side of the top of the equipment table, a material delivery pipe is fixedly connected to the top of the material delivery rack, an injection nozzle is fixedly connected to the middle right end of the material delivery pipe, a material delivery auger is rotatably connected to the inside of the material delivery pipe, and an auger motor is rotatably connected to the middle left end of the material delivery auger.

[0017] As a further description of the above technical solution:

[0018] A feed hopper is fixedly connected to the middle portion of the left side inside the heat preservation box.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the present invention, the heated heating oil is pumped into the inner cavity heating tube of the injection mold by a hydraulic pump, so that the injection mold can be preheated quickly. The preheated heating oil preheats the plastic particles in the material trough through the spiral pipe, thereby improving production efficiency and energy utilization.

[0021] 2. In the present invention, the heating oil is heated or dissipated by the start and stop control of the cooling fan, which prevents the heating oil from overheating or lowering the oil temperature, can quickly adjust the mold temperature, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the high-efficiency and energy-saving injection mold heating device proposed by the utility model;

[0023] Figure 2 This is a schematic cross-sectional view of the injection heating component of the high-efficiency and energy-saving injection mold heating device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the exploded structure of the heating circulation component of the high-efficiency and energy-saving injection mold heating device proposed by the utility model.

[0025] Legend:

[0026] 1. Equipment table; 2. Oil storage tank; 3. Heat sink; 4. Oil guide pipe; 5. Protective net; 6. Cooling fan; 7. Frequency conversion motor; 8. Cooling fins; 9. Circulating oil pump; 10. Hydraulic frame; 11. Hydraulic seat; 12. Hydraulic telescopic rod; 13. Mold fixing seat; 14. Mold movable seat; 15. Moving rod; 16. Push seat; 17. Feed hopper; 18. Spiral heating tube; 19. Insulation box; 20. Feed pipe; 21. Feed auger; 22. Auger motor; 23. Feed frame; 24. Injection nozzle; 25. Injection mold assembly. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Reference Figure 1-Figure 2The utility model provides an embodiment: a high-efficiency and energy-saving injection mold heating device, including an equipment table 1, a mold fixing seat 13 is fixedly connected to the left middle side of the top of the equipment table 1, a mold movable seat 14 is fixedly connected to the middle side of the top of the equipment table 1, an insulation box 19 is fixedly connected to the middle side of the top of the left end of the mold fixing seat 13, a spiral heating pipe 18 is fixedly connected to the left middle part of the inner side of the insulation box 19, an injection mold assembly 25 is fixedly connected to the right end of the mold fixing seat 13, and the injection mold movable seat 14 is fixedly connected to the left end of the injection mold assembly 25. A heating cavity is opened inside the injection mold assembly 25, and an oil storage tank 2, a heat dissipation fin 8, a circulating oil pump 9, the spiral heating pipe 18 and the injection mold assembly 25 are connected by an oil guide pipe 4. The heating oil in the oil storage tank 2 is connected and pumped into the oil guide pipe 4 through the circulating oil pump 9. The heating oil is then transported to the heat sink 8, the spiral heating pipe 18 and the injection mold assembly 25 in sequence through the oil guide pipe 4. The high temperature of the heating oil can accelerate the preheating of the injection mold assembly 25, thereby improving production efficiency. At the same time, for the heating oil after preheating the injection mold assembly 25, in order to improve energy utilization, the heating oil is transported to the spiral heating pipe 18 through the oil guide pipe 4 to preheat the plastic particles in the feed hopper 17, so that the plastic particles are accelerated to liquefy in the feed pipe 20, thereby improving injection molding efficiency. The high temperature generated by the spiral heating pipe 18 is prevented from dissipating heat through the insulation material in the insulation box 19, thereby improving heat utilization rate.

[0029] Reference Figure 1 and Figure 3 The left side of the front end of the equipment platform 1 is fixedly connected to a heat sink 3, the middle part of the front end of the equipment platform 1 is fixedly connected to an oil storage tank 2, the front part of the inner side of the heat sink 3 is fixedly connected to a frequency conversion motor 7, the middle part of the front end of the frequency conversion motor 7 is rotatably connected to a cooling fan 6, the middle part and the rear part of the inner side of the heat sink 3 are fixedly connected to heat sink fins 8, and the rear end of the heat sink 3 is fixedly connected to a circulating oil pump 9. In order to prevent the heating oil from being overheated, when the heating oil passes through the heat sink fins 8, the frequency conversion motor 7 is controlled to drive the cooling fan 6 to adjust the oil temperature at different speeds according to the required oil temperature. As the speed of the cooling fan 6 changes, the air flow rate is different, so that the oil temperature of the heating oil is adjusted in time.

[0030] Reference Figure 1-Figure 3, the right middle part of the top of the equipment platform 1 is fixedly connected to a hydraulic frame 10, the middle of the right end of the hydraulic frame 10 is fixedly connected to a hydraulic seat 11, and a hydraulic telescopic rod 12 is slidably connected to the inside of the hydraulic seat 11, and the right end of the hydraulic telescopic rod 12 is fixedly connected to a pushing seat 16, and the four corners of the left end of the pushing seat 16 are fixedly connected to a moving rod 15. The front middle part of the heat dissipation box 3 is fixedly connected to a protective net 5. The left middle part of the top of the equipment platform 1 is fixedly connected to a feeding rack 23, and the top of the feeding rack 23 is fixedly connected to a feeding pipe 20, and the middle of the right end of the feeding pipe 20 is fixedly connected to an injection nozzle 24. The inside of the feeding pipe 20 is rotatably connected to a feeding auger 21, and the middle of the left end of the feeding auger 21 is rotatably connected to the auger motor 22. The left middle part of the inner side of the insulation box 19 is fixedly connected to a feeding hopper 17. Before the worker performs the injection molding operation, he first adds heating oil through the oil storage tank 2, and then supplies power to the heater in the oil storage tank 2 to heat the heating oil in the oil storage tank 2.

[0031] Working principle: Before the injection molding operation, the worker first adds heating oil through the oil storage tank 2, and then supplies power to the heater in the oil storage tank 2 to heat the heating oil in the oil storage tank 2. Then, the heating oil in the oil storage tank 2 is pumped into the oil guide pipe 4 through the circulating oil pump 9. The heating oil is then transported to the heat sink 8, the spiral heating pipe 18 and the injection mold assembly 25 in sequence through the oil guide pipe 4. The high temperature of the heating oil can accelerate the preheating of the injection mold assembly 25, thereby improving production efficiency. At the same time, the heating oil preheated in the injection mold assembly 25 is heated by the guide pipe 4 to improve energy utilization. The oil pipe 4 is transported to the spiral heating pipe 18 to preheat the plastic particles in the feed hopper 17, so that the plastic particles are accelerated to liquefy in the feed pipe 20, thereby improving the injection molding efficiency. The high temperature generated by the spiral heating pipe 18 is blocked by the insulation material in the insulation box 19 to prevent heat loss, thereby improving the heat utilization rate. In order to prevent the heating oil from being overheated, when the heating oil passes through the heat dissipation fins 8, the frequency conversion motor 7 is controlled to drive the cooling fan 6 to adjust the oil temperature at different speeds according to the required oil temperature. As the speed of the cooling fan 6 changes, the air flow rate is different, so that the oil temperature of the heating oil is adjusted in time.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An efficient and energy-saving injection mold heating device, comprising an equipment table (1), characterized in that: The left middle side of the top of the equipment platform (1) is fixedly connected to a mold fixing seat (13), the middle side of the top of the equipment platform (1) is fixedly connected to a mold movable seat (14), the middle side of the left top of the mold fixing seat (13) is fixedly connected to a heat preservation box (19), the left middle part of the inner side of the heat preservation box (19) is fixedly connected to a spiral heating tube (18), the left side of the front end of the equipment platform (1) is fixedly connected to a heat dissipation box (3), the middle part of the front end of the equipment platform (1) is fixedly connected to an oil storage tank (2), the front part of the inner side of the heat dissipation box (3) is fixedly connected to a variable frequency motor (7), the middle part of the front end of the variable frequency motor (7) is rotatably connected to a heat dissipation fan (6), the middle part and the rear part of the inner side of the heat dissipation box (3) are fixedly connected to heat dissipation fins (8), and the rear end of the heat dissipation box (3) is fixedly connected to a circulating oil pump (9).

2. The high-efficiency and energy-saving injection mold heating device according to claim 1, characterized in that: The right middle part of the top of the equipment platform (1) is fixedly connected to a hydraulic frame (10), the middle part of the right end of the hydraulic frame (10) is fixedly connected to a hydraulic seat (11), the inner side of the hydraulic seat (11) is slidably connected to a hydraulic telescopic rod (12), the right end of the hydraulic telescopic rod (12) is fixedly connected to a push seat (16), and the four corners of the left end of the push seat (16) are fixedly connected to moving rods (15).

3. The high-efficiency and energy-saving injection mold heating device according to claim 1, characterized in that: The right end of the mold fixing seat (13) is fixedly connected to an injection mold assembly (25), and the left end of the mold movable seat (14) is fixedly connected to the injection mold assembly (25). A heating cavity is provided inside the injection mold assembly (25).

4. The high-efficiency and energy-saving injection mold heating device according to claim 1, characterized in that: A protective net (5) is fixedly connected to the middle of the front end of the heat dissipation box (3).

5. The high-efficiency and energy-saving injection mold heating device according to claim 1, characterized in that: The oil storage tank (2), the heat dissipation fins (8), the circulating oil pump (9), the spiral heating tube (18) and the injection mold assembly (25) are connected via an oil guide tube (4).

6. The high-efficiency and energy-saving injection mold heating device according to claim 1, characterized in that: A material delivery rack (23) is fixedly connected to the middle of the left side of the top of the equipment platform (1); a material delivery pipe (20) is fixedly connected to the top of the material delivery rack (23); an injection nozzle (24) is fixedly connected to the middle of the right end of the material delivery pipe (20); a material delivery auger (21) is rotatably connected to the inside of the material delivery pipe (20); and an auger motor (22) is rotatably connected to the middle of the left end of the material delivery auger (21).

7. The high-efficiency and energy-saving injection mold heating device according to claim 1, characterized in that: A feed hopper (17) is fixedly connected to the middle portion of the left side of the inner side of the heat preservation box (19).

Images