A high-flow plastic injection molding machine

Abstract

This utility model relates to the field of injection molding equipment technology and discloses a high-flowability plastic injection molding machine, including an injection tube. A hopper is fixedly installed on one side of the top surface of the injection tube. Cavities are opened on both sides of the inner wall of the hopper. A melting component is fixedly installed inside the cavity. A filter screen is fixedly installed at the bottom of the inner wall of the hopper. A hopper cover is snapped onto the top surface of the hopper. This high-flowability plastic injection molding machine, through the arrangement of a crushing mechanism, a melting component, and a heat preservation component, allows plastic raw materials to be fed into the hopper. An electric heating grid heats and melts the raw materials after being energized. A servo motor drives a crushing rod to rotate, rapidly crushing the raw materials for faster melting. The filter screen filters out impurities to avoid affecting product quality. The molten plastic flows into the injection tube, where an electric heating plate heats and insulates the tube. Rock wool and polyurethane sleeves provide insulation, reducing heat loss, ensuring the flowability of the molten plastic, and preventing solidification.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a high-flow plastic injection molding machine. Background Technology

[0002] Plastic injection molding is a molding method that combines injection and molding. The equipment used is called a plastic injection molding machine, or simply an injection molding machine. Plastic injection molding machines are the main molding equipment for making various plastic products from thermoplastic and thermosetting plastics.

[0003] A high-flowability plastic injection molding machine disclosed in announcement number CN216992942U, although, by setting a limiting plate, when it is necessary to avoid material waste, the material first enters the interior of the fixed cylinder through the connecting pipe, and then the material inside the fixed cylinder is pushed by the push plate. The material squeezes the limiting plate. When the limiting plate moves away from the injection tube position, the material is injected into the mold through the injection tube. When the injection stops, the limiting plate covers the injection tube position again, which can prevent the material inside the fixed cylinder from leaking out. This device is convenient to avoid material waste.

[0004] However, this high-flow-rate plastic injection molding machine has the following disadvantages: it is not convenient to crush plastic raw materials; some raw materials are large and thick, and melting takes a long time, resulting in low efficiency; in addition, it is not convenient to quickly change injection molds, and it is inconvenient to change molds when producing different products. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a high-flowability plastic injection molding machine to solve the problems mentioned in the background art, such as the inconvenience of crushing plastic raw materials, the large and thick raw materials requiring a long melting time and resulting in low efficiency, and the inconvenience of quickly changing injection molds when producing different products.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-flowability plastic injection molding machine includes an injection tube, a hopper fixedly mounted on one side of the top surface of the injection tube, cavities on both sides of the inner wall of the hopper, a melting component fixedly mounted inside the cavity, a filter screen fixedly mounted on the bottom of the inner wall of the hopper, a hopper cover snapped onto the top surface of the hopper, a crushing mechanism fixedly mounted on the top surface of the hopper cover, fixing blocks fixedly mounted on both sides of the surface of the injection tube, a fixing component slidably mounted inside the fixing blocks, a sealing component sleeved on one end of the injection tube, a connector inserted into the inside of the fixing blocks, a sealing cap fixedly mounted on one side of the connector, an injection mold fixedly mounted on one side of the sealing cap, an injection mechanism fixedly mounted on the other end of the injection tube, and a heat insulation component sleeved on the outer surface of the injection tube.

[0009] As a further embodiment of this utility model, the melting assembly includes an electric heating grid and a temperature controller. The electric heating grid is fixedly disposed inside the cavity, and the temperature controller is fixedly installed on the surface of the hopper and electrically connected to the electric heating grid. The melting assembly is used to melt plastic raw materials.

[0010] As a further embodiment of this utility model, the crushing mechanism includes a servo motor and a crushing rod. The servo motor is fixedly installed on the top surface of the bucket cover, and the crushing rod is fixedly installed at the output end of the servo motor. The crushing mechanism is used to crush plastic raw materials.

[0011] As a further embodiment of this utility model, the fixing component includes a fixing pin and a spring. The fixing pin is slidably disposed inside the fixing block, and the spring is sleeved on the surface of the fixing pin. The fixing component is used to quickly connect the injection mold and the injection tube.

[0012] As a further embodiment of this utility model, a limiting hole is provided on the surface of the connector, the limiting hole is adapted to the fixing pin, and a cavity is provided on the inner wall of the injection tube. An electric heating plate is fixedly installed inside the cavity. The electric heating plate is used to keep the molten plastic in the injection tube warm and prevent it from solidifying.

[0013] As a further embodiment of this utility model, the sealing assembly includes a rubber ring and a silicone ring. The rubber ring is sleeved on one end of the injection tube, and the silicone ring is fixedly disposed on one side of the rubber ring. The sealing assembly is used to seal the connection between the injection tube and the injection mold.

[0014] As a further embodiment of this utility model, the injection mechanism includes an electric push rod and an extrusion injection disc. The electric push rod is fixedly installed at one end of the injection tube, and the extrusion injection disc is fixedly installed at the output end of the electric push rod. The injection mechanism is used to inject molten plastic liquid.

[0015] As a further embodiment of this utility model, the insulation component includes a rock wool sleeve and a polyurethane sleeve. The rock wool sleeve is fixedly disposed on the surface of the injection tube, and the polyurethane sleeve is fixedly disposed on the surface of the rock wool sleeve. The insulation component is used to insulate the injection tube.

[0016] (III) Beneficial Effects

[0017] This utility model provides a high-flowability plastic injection molding machine, which has the following beneficial effects:

[0018] 1. This high-flowability plastic injection molding machine, through the setting of a crushing mechanism, a melting component, and a heat preservation component, feeds plastic raw materials into the hopper. After the electric heating grid is energized, it heats and melts the raw materials. The servo motor drives the crushing rod to rotate, quickly crushing the raw materials to facilitate faster melting. The filter screen filters out impurities to avoid affecting product quality. The molten plastic flows into the injection tube, where the electric heating plate heats and keeps it warm. The rock wool sleeve and polyurethane sleeve provide heat insulation, reducing heat loss, ensuring the flowability of the plastic liquid, and preventing solidification.

[0019] 2. This high-flow-rate plastic injection molding machine, through the setting of fixing and sealing components, allows rubber and silicone rings to be fitted onto one end of the injection tube. By pulling open the fixing pin, the connector is inserted into the fixing block, and the spring rebounds, inserting the fixing pin into the limiting hole of the connector, thus installing the injection mold and the injection tube. This achieves the effect of facilitating quick installation and replacement of the injection mold, making it convenient for producing different products. The silicone and rubber rings seal the connection between the injection mold and the injection tube. The good flexibility of the silicone ring can fill tiny gaps, preventing the high-flow-rate plastic solution from overflowing and leaking. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the crushing mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the injection mechanism and sealing mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the injection mold structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the fixing component structure of this utility model.

[0025] In the diagram: 1. Injection tube; 2. Hopper; 3. Melting assembly; 301. Heating grid; 302. Temperature controller; 4. Filter screen; 5. Hopper cover; 6. Crushing mechanism; 601. Servo motor; 602. Crushing rod; 7. Fixing block; 8. Fixing assembly; 801. Fixing pin; 802. Spring; 9. Sealing assembly; 901. Rubber ring; 902. Silicone ring; 10. Connecting joint; 11. Injection mold; 12. Injection mechanism; 1201. Electric push rod; 1202. Extrusion injection plate; 13. Sealing cover; 14. Insulation assembly; 1401. Rock wool sleeve; 1402. Polyurethane sleeve; 15. Heating plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 5 This utility model provides a technical solution: a high-flowability plastic injection molding machine, including an injection tube 1, a hopper 2 fixedly installed on one side of the top surface of the injection tube 1, cavities on both sides of the inner wall of the hopper 2, a melting component 3 fixedly installed inside the cavity, a filter screen 4 fixedly installed at the bottom of the inner wall of the hopper 2, a hopper cover 5 snapped onto the top surface of the hopper 2, and a crushing mechanism 6 fixedly installed on the top surface of the hopper cover 5. Through the setting of the crushing mechanism 6, the melting component 3 and the heat preservation component 14, plastic raw materials are fed into the hopper 2. After the electric heating grid 301 is energized, it heats and melts the raw materials. The servo motor 601 drives the crushing rod 602 to rotate, which quickly crushes the raw materials, making it easier to melt them faster. The filter screen 4 filters out impurities to avoid affecting product quality. The molten plastic liquid flows into the injection tube 1. The electric heating plate 15 heats and keeps the injection tube 1 warm. The rock wool sleeve 1401 and the polyurethane sleeve 1402 play a role in heat preservation and heat insulation, reducing heat loss, ensuring the fluidity of the plastic liquid, and preventing solidification.

[0028] Fixing blocks 7 are fixedly installed on both sides of the surface of the injection tube 1. Fixing components 8 are slidably installed inside the fixing blocks 7. A sealing component 9 is sleeved on one end of the injection tube 1. With the fixing components 8 and sealing components 9, rubber rings 901 and silicone rings 902 are sleeved on one end of the injection tube 1. Pulling open the fixing pin 801, the connector 10 is inserted into the fixing block 7. The spring 802 rebounds and the fixing pin 801 is inserted into the limiting hole of the connector 10. The injection mold 11 is then installed with the injection tube 1, which facilitates quick installation and replacement of the injection mold 1. The effect of 1 is to facilitate the production of different products. The rubber ring 901 and the silicone ring 902 seal the connection between the injection mold 11 and the injection tube 1. The good flexibility of the silicone ring 902 can fill the tiny gaps and prevent the highly fluid plastic solution from overflowing and leaking. The fixing block 7 has a connector 10 inserted inside. A sealing cover 13 is fixedly installed on one side of the connector 10. The injection mold 11 is fixedly installed on one side of the sealing cover 13. An injection mechanism 12 is fixedly installed at the other end of the injection tube 1. A heat insulation component 14 is sleeved on the outer surface of the injection tube 1.

[0029] The melting assembly 3 includes an electric heating grid 301 and a temperature controller 302. The electric heating grid 301 is fixedly installed inside the cavity, and the temperature controller 302 is fixedly installed on the surface of the hopper 2 and electrically connected to the electric heating grid 301.

[0030] The melting component 3 is designed to melt the plastic raw materials.

[0031] The crushing mechanism 6 includes a servo motor 601 and a crushing rod 602. The servo motor 601 is fixedly installed on the top surface of the bucket cover 5, and the crushing rod 602 is fixedly installed at the output end of the servo motor 601.

[0032] The crushing mechanism 6 is designed to pulverize the plastic raw materials and increase the melting rate.

[0033] The fixing component 8 includes a fixing pin 801 and a spring 802. The fixing pin 801 is slidably disposed inside the fixing block 7, and the spring 802 is sleeved on the surface of the fixing pin 801.

[0034] The fixing component 8 serves to quickly connect and install the connector 10 and the fixing block 7.

[0035] A limiting hole is provided on the surface of the connector 10, which is adapted to the fixing pin 801. A cavity is provided on the inner wall of the injection tube 1, and an electric heating plate 15 is fixedly installed inside the cavity.

[0036] The heating plate 15 is used to heat the inside of the injection tube 1.

[0037] The sealing assembly 9 includes a rubber ring 901 and a silicone ring 902. The rubber ring 901 is fitted onto one end of the injection tube 1, and the silicone ring 902 is fixedly disposed on one side of the rubber ring 901.

[0038] The sealing component 9 serves to seal the connection between the injection tube 1 and the injection mold 11.

[0039] The injection mechanism 12 includes an electric push rod 1201 and a squeezing injection disc 1202. The electric push rod 1201 is fixedly installed at one end of the injection tube 1, and the squeezing injection disc 1202 is fixedly installed at the output end of the electric push rod 1201.

[0040] By setting the injection mechanism 12, the electric push rod 1201 is turned on, which drives the extrusion injection plate 1202 to push the molten raw material into the injection mold 11.

[0041] The thermal insulation component 14 includes a rock wool sleeve 1401 and a polyurethane sleeve 1402. The rock wool sleeve 1401 is fixedly disposed on the surface of the injection tube 1, and the polyurethane sleeve 1402 is fixedly disposed on the surface of the rock wool sleeve 1401.

[0042] The insulation component 14 serves to keep the molten plastic liquid in the injection tube 1 warm and prevent it from solidifying.

[0043] The model of the temperature controller 302 is WIKA CS6S. The above parameters and model can be selected according to the actual situation.

[0044] In this invention, the working steps of the device are as follows:

[0045] First step: Place the rubber ring 901 and silicone ring 902 on one end of the injection tube 1, pull open the fixing pin 801, insert the connector 10 into the fixing block 7, and the spring 802 rebounds the fixing pin 801 into the limiting hole of the connector 10. Install the injection mold 11 with the injection tube 1 to facilitate quick installation and replacement of the injection mold 11 and to facilitate the production of different products. The rubber ring 901 and silicone ring 902 seal the connection between the injection mold 11 and the injection tube 1. The good flexibility of the silicone ring 902 can fill the tiny gaps to prevent the highly fluid plastic solution from overflowing and leaking.

[0046] The second step: The plastic raw material is put into the hopper 2. After the electric heating grid 301 is powered on, it heats and melts the raw material. The servo motor 601 drives the crushing rod 602 to rotate, which quickly crushes the raw material and facilitates faster melting. The filter screen 4 filters out impurities to avoid affecting the product quality.

[0047] Third step: The molten plastic liquid flows into the injection tube 1. The heating plate 15 heats and keeps the injection tube 1 warm. The rock wool sleeve 1401 and the polyurethane sleeve 1402 play a role in heat insulation, reducing heat loss, ensuring the fluidity of the plastic liquid, and preventing solidification.

[0048] Fourth step: Turn on the electric push rod 1201 to drive the extrusion injection plate 1202 to push the molten raw material into the injection mold 11 for molding.

[0049] It should be noted that the device 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 device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific structure 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.

[0050] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high flow plastic injection molding machine comprising an injection tube (1), characterized in that: A hopper (2) is fixedly installed on one side of the top surface of the injection tube (1). Holes are opened on both sides of the inner wall of the hopper (2). A melting component (3) is fixedly installed inside the cavity. A filter screen (4) is fixedly installed at the bottom of the inner wall of the hopper (2). A bucket cover (5) is snapped onto the top surface of the hopper (2). A crushing mechanism (6) is fixedly installed on the top surface of the bucket cover (5). Fixing blocks (7) are fixedly installed on both sides of the surface of the injection tube (1). The injection tube (1) is internally slidably provided with a fixing component (8), one end of the injection tube (1) is sleeved with a sealing component (9), the fixing block (7) is internally inserted with a connector (10), a sealing cap (13) is fixedly provided on one side of the connector (10), an injection mold (11) is fixedly provided on one side of the sealing cap (13), an injection mechanism (12) is fixedly provided on the other end of the injection tube (1), and a heat insulation component (14) is sleeved on the outer surface of the injection tube (1).

2. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The melting component (3) includes an electric heating grid (301) and a temperature controller (302). The electric heating grid (301) is fixedly disposed inside the cavity, and the temperature controller (302) is fixedly installed on the surface of the hopper (2) and electrically connected to the electric heating grid (301).

3. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The crushing mechanism (6) includes a servo motor (601) and a crushing rod (602). The servo motor (601) is fixedly installed on the top surface of the bucket cover (5), and the crushing rod (602) is fixedly installed at the output end of the servo motor (601).

4. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The fixing component (8) includes a fixing pin (801) and a spring (802). The fixing pin (801) is slidably disposed inside the fixing block (7), and the spring (802) is sleeved on the surface of the fixing pin (801).

5. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The surface of the connector (10) is provided with a limiting hole, which is adapted to the fixing pin (801). The inner wall of the injection tube (1) is provided with a cavity, and an electric heating plate (15) is fixedly installed inside the cavity.

6. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The sealing assembly (9) includes a rubber ring (901) and a silicone ring (902). The rubber ring (901) is fitted onto one end of the injection tube (1), and the silicone ring (902) is fixedly disposed on one side of the rubber ring (901).

7. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The injection mechanism (12) includes an electric push rod (1201) and a squeezing injection disc (1202). The electric push rod (1201) is fixedly installed at one end of the injection tube (1), and the squeezing injection disc (1202) is fixedly installed at the output end of the electric push rod (1201).

8. The high-flowability plastic injection molding machine according to claim 1, characterized in that: The insulation component (14) includes a rock wool sleeve (1401) and a polyurethane sleeve (1402). The rock wool sleeve (1401) is fixedly disposed on the surface of the injection tube (1), and the polyurethane sleeve (1402) is fixedly disposed on the surface of the rock wool sleeve (1401).

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