High-efficiency injection molding device for plastic parts of electrical appliances

Abstract

The utility model discloses a kind of high-efficiency injection molding devices of electric appliance plastic fittings, including workbench, storage mechanism includes feed tank, the bottom of feed tank is connected with the communicating trapezoidal block, the bottom of trapezoidal block is fixed with support rod, the bottom of two support rods is fixed with the top of support base, the inner wall both ends of feed tank are rotatably connected with first rotating lever, the outer wall of first rotating lever is fixed with multiple arc agitator plates, the inner wall one side of feed tank is installed with semiconductor refrigeration sheet, one end of semiconductor refrigeration sheet located at the outside of feed tank is equipped with radiating fin, the refrigeration end of semiconductor refrigeration sheet is located in the inside of feed tank, the top of feed tank is equipped with the feed inlet communicated with its inside. The utility model realizes the effect of preventing plastic particles from softening, avoids that blanking will be blocked outlet, improves the efficiency of injection molding, reduces the loss of raw material, improves the utilization of raw material, realizes efficient injection molding.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts manufacturing technology, and in particular to a high-efficiency injection molding device for electrical plastic parts. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are divided into vertical, horizontal, and all-electric types. Injection molding machines heat the plastic and apply high pressure to the molten plastic, causing it to be injected and fill the mold cavity.

[0003] In the production of plastic parts using injection molding machines, due to the differences in the materials of various plastic parts, plastic granules are fed into the barrel via a screw during production and melted by a heating system. Because the feed box and the barrel are connected, the heat in the barrel is dissipated into the feed box. Although the dissipated heat does not melt the plastic in the feed box, it causes the plastic granules to soften, leading to increased interaction forces between the granules. This results in reduced feeding efficiency and even granule congestion at the discharge point. Therefore, there is an urgent need for a high-efficiency injection molding device for electrical plastic parts to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency injection molding device for electrical plastic parts.

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

[0006] A high-efficiency injection molding device for plastic parts of electrical appliances includes a worktable, a support base fixed at one end of the top of the worktable, an injection molding mechanism for injection molding plastic parts at one end of the support base, and a storage mechanism for storing raw materials at the top of the support base.

[0007] The storage mechanism includes a feeding box, the bottom of which is connected to a trapezoidal block. Support rods are fixed on both sides of the bottom of the trapezoidal block. The bottoms of the two support rods are fixed to the top of the support base. A first rotating rod is rotatably connected to both ends of the inner wall of the feeding box. Multiple arc-shaped stirring plates are fixed to the outer wall of the first rotating rod. A semiconductor cooling chip is installed on one side of the inner wall of the feeding box. The end of the semiconductor cooling chip located outside the feeding box is provided with heat dissipation fins. The cooling end of the semiconductor cooling chip is located inside the feeding box. The top of the feeding box is provided with a feeding port communicating with its interior.

[0008] Preferably, a temperature sensor is installed at one end of the top of the inner wall of the feed box.

[0009] Preferably, a second rotating rod is rotatably connected to the bottom of both sides of the inner wall of the feed box, and a heat insulation plate is fixed to the outer wall of both second rotating rods.

[0010] Preferably, the bottom of one end of the feed box is provided with two synchronous pulleys, the outer walls of the two synchronous pulleys are provided with matching synchronous belts, one of the synchronous pulleys is fixedly connected to one end of one of the second rotating rods, and one end of the other synchronous pulley is fixed with a first gear, and the first gear is rotatably connected to the outer wall of one end of the feed box.

[0011] Preferably, one end of another second rotating rod is fixed with a second gear, and the second gear meshes with the first gear. The other end of the feed box is equipped with a second motor, and the output shaft of the second motor is fixedly connected to the other end of one of the second rotating rods.

[0012] Preferably, a first motor is installed on the outer wall of one end of the feed box, and the output shaft of the first motor is fixedly connected to one end of the first rotating rod.

[0013] Preferably, the injection molding mechanism includes a heating cylinder installed inside the support base. The heating cylinder is equipped with a heating component and a screw for extruding the granules. The other end of the heating cylinder is equipped with a mold clamping system, which includes an injection mold for injection molding plastic parts. The bottom of the trapezoidal block is connected to a communicating discharge port, and the bottom of the discharge port is connected to and communicates with the surface of the heating cylinder. The other end of the support base is equipped with a hydraulic system.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Due to the use of temperature sensors and semiconductor cooling chips, when the temperature sensor detects that the temperature of the plastic granules inside the feed hopper is too high, the controller will control the semiconductor cooling chip to operate, thereby cooling the inside of the feed hopper. Then, the first motor will be activated, driving the arc-shaped stirring plate to rotate and agitate the plastic granules, making them cool evenly. This achieves the effect of preventing the plastic granules from softening, avoiding blockage of the discharge port during feeding, improving injection molding efficiency, reducing raw material loss, increasing raw material utilization, and achieving high-efficiency injection molding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a high-efficiency injection molding device for electrical plastic parts proposed in this utility model;

[0017] Figure 2 This is a partial sectional view of the side of an efficient injection molding device for electrical plastic parts proposed in this utility model.

[0018] Figure 3This is a partial cross-sectional structural diagram of the feed box of a high-efficiency injection molding device for electrical plastic parts proposed in this utility model;

[0019] Figure 4 This utility model proposes a high-efficiency injection molding device for electrical plastic parts. Figure 3 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a partial structural diagram of the storage mechanism of a high-efficiency injection molding device for electrical plastic parts proposed in this utility model.

[0021] In the diagram: 1. Workbench; 2. Support base; 201. Heating cylinder; 202. Mold closing system; 3. Feed box; 301. Feed inlet; 302. Discharge outlet; 303. Trapezoidal block; 304. Support rod; 4. First rotating rod; 401. First motor; 402. Arc-shaped stirring plate; 5. Heat insulation plate; 501. Synchronous pulley; 5010. Synchronous belt; 502. Second rotating rod; 503. First gear; 504. Second gear; 505. Second motor; 6. Temperature sensor; 601. Semiconductor cooling chip; 602. Heat sink fins. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-5 A high-efficiency injection molding device for plastic parts of electrical appliances includes a workbench 1, a support base 2 fixed at one end of the top of the workbench 1, an injection molding mechanism for injection molding plastic parts at one end of the support base 2, and a storage mechanism for storing raw materials at the top of the support base 2.

[0024] The storage mechanism includes a feeding box 3, with a connected trapezoidal block 303 at the bottom of the feeding box 3. Support rods 304 are fixed on both sides of the bottom of the trapezoidal block 303. The bottom of the two support rods 304 is fixed to the top of the support base 2. The inner wall of the feeding box 3 is rotatably connected to the two ends of the first rotating rod 4. Multiple arc-shaped stirring plates 402 are fixed on the outer wall of the first rotating rod 4. A semiconductor cooling chip 601 is installed on one side of the inner wall of the feeding box 3. The end of the semiconductor cooling chip 601 located outside the feeding box 3 is provided with a heat dissipation fin 602. The cooling end of the semiconductor cooling chip 601 is located inside the feeding box 3. The top of the feeding box 3 is provided with a feed port 301 that communicates with its interior.

[0025] In this invention, a temperature sensor 6 is installed at one end of the top of the inner wall of the feed box 3.

[0026] In this utility model, the bottom of both sides of the inner wall of the feed box 3 is rotatably connected to a second rotating rod 502, and the outer walls of the two second rotating rods 502 are fixed with heat insulation plates 5.

[0027] In this utility model, two synchronous pulleys 501 are provided at the bottom of one end of the feed box 3. The outer walls of the two synchronous pulleys 501 are provided with matching synchronous belts 5010. One of the synchronous pulleys 501 is fixedly connected to one end of one of the second rotating rods 502. One end of the other synchronous pulley 501 is fixed with a first gear 503, and the first gear 503 is rotatably connected to the outer wall of one end of the feed box 3.

[0028] In this utility model, a second gear 504 is fixed to one end of another second rotating rod 502, and the second gear 504 meshes with the first gear 503. A second motor 505 is installed at the other end of the feed box 3, and the output shaft of the second motor 505 is fixedly connected to the other end of one of the second rotating rods 502.

[0029] In this utility model, a first motor 401 is installed on the outer wall of one end of the feed box 3, and the output shaft of the first motor 401 is fixedly connected to one end of the first rotating rod 4.

[0030] In this utility model, the injection molding mechanism includes a heating cylinder 201 installed inside the support base 2. The heating cylinder 201 is equipped with a heating component and a screw for extruding particles. The other end of the heating cylinder 201 is equipped with a mold clamping system 202, which includes an injection mold for injection molding plastic parts. The bottom of the trapezoidal block 303 is connected to a communicating discharge port 302, and the bottom of the discharge port 302 is connected to and communicates with the surface of the heating cylinder 201. The other end of the support base 2 is equipped with a hydraulic system.

[0031] Working principle: During use, granules are fed into the feed hopper 3. The hydraulic system drives the rotating shaft to rotate, which in turn rotates the screw, drawing the plastic granules into the heating cylinder 201. The heating components melt the granules. The hydraulic system then drives the screw to inject the molten plastic from the nozzle of the heating cylinder 201 into the mold-closing system 202. The mold-closing system 202 shapes and cools the granules before demolding. While the plastic granules are inside the feed hopper 3, the temperature sensor 6 is set to a suitable storage temperature. When the temperature is too high, the temperature sensor 6 transmits a signal to the controller. The controller then activates the semiconductor cooling chip 601, which cools the plastic granules inside the feed hopper 3. Simultaneously, the first motor 401 operates, driving the first rotating rod 4 to rotate, which in turn drives the arc-shaped stirring plate 402 to rotate. The particles inside the feed box 3 are agitated to cool them more quickly. When the particles reach the qualified temperature, the controller shuts off the semiconductor cooling chip 601 and the first motor 401. Then, when it is necessary to add material to the heating cylinder 201, the second motor 505 is activated. The second motor 505 drives one of the second rotating rods 502 to rotate, which in turn drives the synchronous wheel 501 to rotate. The synchronous wheel 501 drives the other synchronous wheel 501 to rotate via the synchronous belt 5010. The synchronous wheel 501 drives the first gear 503 to rotate and meshes with the second gear 504. The second gear 504 drives the other second rotating rod 502 to rotate. At this time, the two heat insulation plates 5 open, and the plastic particles inside the feed box 3 are then transported to the heating cylinder 201 through the discharge port 302. This prevents the plastic particles from softening due to heat, which would affect the material feeding and improves the efficiency of high-efficiency injection molding of plastic parts.

[0032] It should be noted that the equipment structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the injection molding mechanism is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency injection molding device for electrical plastic parts, comprising a worktable (1), characterized in that, The top end of the workbench (1) is fixed with a support base (2), one end of the support base (2) is provided with an injection molding mechanism for injection molding plastic parts, and the top of the support base (2) is provided with a storage mechanism for storing raw materials. The storage mechanism includes a feeding box (3), the bottom of which is connected to a trapezoidal block (303). Support rods (304) are fixed on both sides of the bottom of the trapezoidal block (303). The bottom of the two support rods (304) is fixed to the top of the support base (2). The inner walls of the feeding box (3) are rotatably connected to the two ends of the first rotating rod (4). Multiple arc-shaped stirring plates (402) are fixed on the outer wall of the first rotating rod (4). A semiconductor cooling chip (601) is installed on one side of the inner wall of the feeding box (3). The semiconductor cooling chip (601) is provided with a heat dissipation fin (602) at one end outside the feeding box (3). The cooling end of the semiconductor cooling chip (601) is located inside the feeding box (3). The top of the feeding box (3) is provided with a feed port (301) communicating with its interior.

2. The high-efficiency injection molding device for electrical plastic parts according to claim 1, characterized in that, A temperature sensor (6) is installed at one end of the top of the inner wall of the feed box (3).

3. The high-efficiency injection molding device for electrical plastic parts according to claim 1, characterized in that, The bottom of both sides of the inner wall of the feed box (3) is rotatably connected to a second rotating rod (502), and the outer walls of the two second rotating rods (502) are fixed with heat insulation plates (5).

4. The high-efficiency injection molding device for electrical plastic parts according to claim 3, characterized in that, Two synchronous pulleys (501) are provided at the bottom of one end of the feed box (3). The outer walls of the two synchronous pulleys (501) are provided with matching synchronous belts (5010). One of the synchronous pulleys (501) is fixedly connected to one end of one of the second rotating rods (502). One end of the other synchronous pulley (501) is fixed with a first gear (503), and the first gear (503) is rotatably connected to the outer wall of one end of the feed box (3).

5. The high-efficiency injection molding device for electrical plastic parts according to claim 4, characterized in that, One end of another second rotating rod (502) is fixed with a second gear (504), and the second gear (504) meshes with the first gear (503). The other end of the feed box (3) is equipped with a second motor (505), and the output shaft of the second motor (505) is fixedly connected to the other end of one of the second rotating rods (502).

6. The high-efficiency injection molding device for electrical plastic parts according to claim 1, characterized in that, The first motor (401) is installed on the outer wall of one end of the feed box (3), and the output shaft of the first motor (401) is fixedly connected to one end of the first rotating rod (4).

7. The high-efficiency injection molding device for electrical plastic parts according to claim 1, characterized in that, The injection molding mechanism includes a heating cylinder (201) installed inside the support base (2). The heating cylinder (201) is equipped with a heating component and a screw for extruding particles. The other end of the heating cylinder (201) is equipped with a mold clamping system (202), and the mold clamping system (202) includes an injection mold for injection molding plastic parts. The bottom of the trapezoidal block (303) is connected to a communicating discharge port (302), and the bottom of the discharge port (302) is connected to and communicates with the surface of the heating cylinder (201). The other end of the support base (2) is equipped with a hydraulic system.

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