Injection molding machine

Abstract

The utility model relates to an injection molding machine which comprises a rack, a mold closing unit arranged on one side of the rack and an injection unit arranged on the other side of the rack, a hydraulic unit is arranged below the injection unit, the hydraulic unit is arranged below the injection unit and is in driving connection with the mold closing unit and the injection unit, and the mold closing unit comprises a guide rail extending in the length direction of the rack; an electric control unit is arranged below the hydraulic unit and comprises a motor, a cooling unit is arranged on the rack and comprises a water tank located on the left side of the motor, a cooling pipeline and a water pump, the cooling pipeline and the water pump are connected with the water tank, and under the action of the water pump, cooling water can enter the cooling pipeline from the water tank and cool the motor. The cooling water in the cooling unit can take away heat generated by the motor under the conveying of the water pump, so that the cooling effect is achieved, the service life of the motor is prolonged, and demagnetization of the motor is avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, specifically to an injection molding machine. Background Technology

[0002] Injection molding machines are core equipment in the plastics processing industry and are currently widely used in home appliances, medical, electronics and daily necessities. Injection molding machines inject molten plastic material into the mold, and after cooling, the plastic material solidifies and shapes to obtain the finished product. Injection molding production has the advantages of high automation, high production precision and high efficiency.

[0003] For example, Chinese invention patent ZL202111646065.X (publication number CN114274478A), entitled "An Injection Molding Machine with Material Transfer Function," discloses an injection molding machine including a housing. The upper surface of the housing is a worktable, and the front is an operating position. A motor bracket is fixed to the top right side of the housing, and a servo motor is mounted on top of the motor bracket. A sleeve is set in the middle of the top of the housing, and a feed hopper is set on the top right side of the sleeve. An auger is embedded inside the sleeve. A heating bushing is fixed to the left side of the sleeve through a flange. A dustproof box is fixed to the top left side of the housing. This injection molding machine has high production efficiency and high product quality. However, the following problems exist during use: When the servo motor operates under high load for a long time, it will generate a large amount of heat load. If heat dissipation is not timely, it will reduce the service life of the servo motor and cause demagnetization.

[0004] Therefore, further improvements to the structure of the injection molding machine are needed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an injection molding machine that can reduce the ambient temperature of the motor and extend the service life of the motor, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the injection molding machine includes a frame, and

[0007] A mold-closing unit is disposed on one side of the frame, and the mold-closing unit includes a guide rail extending along the length of the frame;

[0008] The injection unit is located on the other side of the frame;

[0009] A hydraulic unit is located below the injection unit and is drivenly connected to both the mold clamping unit and the injection unit.

[0010] An electrical control unit is located below the hydraulic unit, and the electrical control unit includes a motor;

[0011] The feature is that a cooling unit is provided on the frame, the cooling unit includes a water tank located on the left side of the motor, and a cooling pipe and a water pump connected to the water tank. Under the action of the water pump, cooling water can enter the cooling pipe from the water tank and cool the motor.

[0012] To facilitate motor cooling, the water tank preferably includes an inlet tank and a return tank spaced apart, with a partition between them. One end of the cooling pipe connects to the inlet tank, and the other end connects to the return tank. The inlet tank stores cool water at a lower temperature. Under the action of a water pump, the cool water is transported along the cooling pipe, and the heated cool water eventually flows back to the return tank along the cooling pipe.

[0013] To reduce heat transfer, the spacer is preferably an insulation layer. Since the cooling water in the inlet tank is at a lower temperature, while the return tank contains heated cooling water, the insulation layer between the two tanks reduces heat transfer between the cooling water, thus ensuring effective cooling of the motor.

[0014] To improve cooling efficiency, preferably, a cooling box is provided above the motor to fix the cooling pipes, and the cooling pipes are wound around the axis A of the cooling box. Since the internal space of the cooling box is limited, winding the cooling pipes around the axis A improves space utilization and increases the length of the cooling pipes, thereby improving the cooling effect; at the same time, the wound pipes easily generate turbulence, thus improving the heat transfer coefficient.

[0015] To isolate impurities, preferably, a guide sleeve is fitted onto the guide rail, and a dustproof ring is provided in the installation gap between the guide rail and the guide sleeve. The guide rail plays a crucial supporting and guiding role in the injection molding machine. The dustproof ring in the installation gap between the guide rail and the guide sleeve serves two purposes: firstly, it blocks external impurities, preventing impurity particles from scratching or even jamming the guide rail; secondly, it prevents the lubricating oil on the guide rail from being contaminated by impurity particles.

[0016] To facilitate material transport, the top of the injection unit is preferably equipped with a funnel for conveying raw materials. The funnel design allows for easy material feeding by the operator and also facilitates the transport of plastic granules into the injection molding machine's barrel, ensuring the continuity of the production process.

[0017] For ease of operation and observation, preferably, the frame is equipped with a lubrication pump for supplying lubricating fluid to the guide rail. The frame is also fitted with a protective cover, and an operation window is provided on the side wall of the protective cover. The lubrication pump is adjacent to the operation window. The operation window on the protective cover allows the operator to easily observe the operation of the lubrication pump and make timely judgments. If the lubricating oil is insufficient, it can be added promptly through the operation window.

[0018] To enhance safety, preferably, a sensor is installed on the front panel of the frame, and this sensor is connected to the electrical control unit. Specifically, the sensor is a photoelectric switch connected to the electrical control unit; once it detects operator intrusion, the system will automatically sound an alarm and prevent the injection molding machine from proceeding to the next step.

[0019] Compared with the prior art, the advantages of this utility model are as follows: a cooling unit is provided around the motor. The cooling unit includes a water tank, cooling pipes and a water pump. Under the action of the water pump, cooling water can enter the cooling pipes from the water tank and cool the motor, thereby removing the heat generated when the motor is running under high load, thus extending the service life of the motor and preventing the motor from demagnetizing. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a front view of an embodiment of the present utility model;

[0022] Figure 3 This is a rear view of an embodiment of the present utility model;

[0023] Figure 4 This is an exploded structural diagram of an embodiment of the present invention.

[0024] In the diagram: 1. Frame; 2. Mold closing unit; 21. Guide rail; 3. Injection unit; 31. Funnel; 4. Hydraulic unit; 5. Electrical control unit; 51. Motor; 6. Cooling unit; 61. Water tank; 611. Inlet water tank; 612. Return water tank; 613. Spacing section; 62. Cooling pipes; 63. Cooling box; 7. Guide sleeve; 8. Lubrication pump; 9. Protective cover; 91. Operation window; 10. Sensor. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 4The diagram shows the preferred embodiment of this utility model. The injection molding machine includes a frame 1, a mold clamping unit 2 on one side of the frame 1, the mold clamping unit 2 including a guide rail 21 extending along the length of the frame 1, an injection unit 3 on the other side of the frame 1, a hydraulic unit 4 below the injection unit 3, the hydraulic unit 4 being drivenly connected to the mold clamping unit 2 and the injection unit 3, an electrical control unit 5 below the hydraulic unit 4, the electrical control unit 5 including a motor 51, and a cooling unit 6 on the frame 1, the cooling unit 6 including a water tank 61 located to the left of the motor 51, a cooling pipe 62 connected to the water tank 61, and a water pump. Under the action of the water pump, cooling water can enter the cooling pipe 62 from the water tank 61 and cool the motor 51.

[0027] refer to Figure 2 The water tank 61 includes an inlet tank 611 and a return tank 612 spaced apart. A spacer 613 is provided between the inlet tank 611 and the return tank 612. The spacer 613 is a heat insulation layer. One end of the cooling pipe 62 is connected to the inlet tank 611 and the other end is connected to the return tank 612. The inlet tank 611 stores cooling water at a lower temperature. Under the action of the water pump, the cooling water is transported along the cooling pipe 62. The heated cooling water eventually flows back to the return tank 612 along the cooling pipe 62. The heat insulation layer between the inlet tank 611 and the return tank 612 can reduce the heat transfer between the cooling water, thereby ensuring the cooling effect on the motor 51.

[0028] When the motor 51 operates under high load for a long time, it will generate a large amount of heat load. In order to improve the cooling effect, this embodiment provides a cooling box 63 above the motor 51 for fixing the cooling pipe 62. Since the internal space of the cooling box 63 is limited, the cooling pipe 62 is wound around the axis A of the cooling box 63. There are many forms of this winding arrangement, such as "S" shape, "W" shape, etc. In this embodiment, the "S" shape winding arrangement is preferred. Its advantages are: first, it improves the space utilization rate and increases the length of the cooling pipe 62, thereby improving the cooling effect; second, the wound pipe is easy to form turbulence, thereby improving the heat transfer coefficient.

[0029] Guide rail 21 plays an important supporting and guiding role in the injection molding machine. (Refer to...) Figure 3 In this embodiment, a guide sleeve 7 is fitted on the guide rail 21, and a dustproof ring is provided in the installation gap between the guide rail 21 and the guide sleeve 7. On the one hand, the dustproof ring can block external impurities, thereby preventing impurity particles from scratching or even jamming the guide rail 21; on the other hand, the dustproof ring can prevent the lubricating oil on the guide rail 21 from being contaminated by impurity particles.

[0030] refer to Figures 1 to 4The top of the injection unit 3 is provided with a funnel 31 for conveying raw materials. The design of the funnel 31 makes it easy for operators to add materials and also facilitates the conveying of plastic granules into the barrel of the injection molding machine, ensuring the continuity of the production process.

[0031] refer to Figure 1 and Figure 2 The frame 1 is equipped with a lubrication pump 8 for delivering lubricating fluid to the guide rail 21. The frame 1 is also equipped with a protective cover 9. An operation window 91 is provided on the side wall of the protective cover 9. The lubrication pump 8 is adjacent to the operation window 91. The operation window 91 on the protective cover 9 allows the operator to observe the working status of the lubrication pump 8 and make timely judgments. If the lubricating oil is insufficient, it can be added in time through the operation window 91.

[0032] In addition, a sensor 10 is installed on the front baffle of the frame 1. The sensor 10 is connected to the electrical control unit 5. The sensor 10 is a photoelectric switch connected to the electrical control unit 5. Once it detects that an operator has entered, the system will automatically alarm and prevent the injection molding machine from proceeding to the next step, thereby improving the safety of the device and avoiding accidents.

Claims

1. An injection molding machine, comprising a frame (1), and A mold-closing unit (2) is disposed on one side of the frame (1), and the mold-closing unit (2) includes a guide rail (21) extending along the length direction of the frame (1); The injection unit (3) is located on the other side of the frame (1); A hydraulic unit (4) is disposed below the injection unit (3) and is drivenly connected to the mold closing unit (2) and the injection unit (3); An electrical control unit (5) is disposed below the hydraulic unit (4), and the electrical control unit (5) includes a motor (51); Its features are: The frame (1) is provided with a cooling unit (6). The cooling unit (6) includes a water tank (61) located on the left side of the motor (51), a cooling pipe (62) connected to the water tank (61), and a water pump. Under the action of the water pump, cooling water can enter the cooling pipe (62) from the water tank (61) and cool the motor (51).

2. The injection molding machine according to claim 1, characterized in that: The water tank (61) includes an inlet tank (611) and a return tank (612) spaced apart, with a spacer (613) between the inlet tank (611) and the return tank (612). One end of the cooling pipe (62) is connected to the inlet tank (611) and the other end is connected to the return tank (612).

3. The injection molding machine according to claim 2, characterized in that: The spacer (613) is a heat insulation layer.

4. The injection molding machine according to claim 2, characterized in that: A cooling box (63) for fixing the cooling pipe (62) is provided above the motor (51), and the cooling pipe (62) is wound around the axis A of the cooling box (63).

5. The injection molding machine according to claim 1, characterized in that: A guide sleeve (7) is fitted on the guide rail (21), and a dustproof ring is provided in the installation gap between the guide rail (21) and the guide sleeve (7).

6. The injection molding machine according to claim 1, characterized in that: The top of the injection unit (3) is provided with a funnel (31) for conveying raw materials.

7. The injection molding machine according to any one of claims 1 to 6, characterized in that: The frame (1) is provided with a lubrication pump (8) for supplying lubricating fluid to the guide rail (21). The frame (1) is also provided with a protective cover (9). An operation window (91) is provided on the side wall of the protective cover (9). The lubrication pump (8) is adjacent to the operation window (91).

8. The injection molding machine according to claim 7, characterized in that: A sensor (10) is provided on the front baffle of the frame (1), and the sensor (10) is connected to the electrical control unit (5).

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