Electric injection molding machine

Abstract

The application relates to an electric injection molding machine, which comprises a machine body provided with a mounting plate and a push plate, the push plate slides on the machine body, the sliding direction of the push plate is the direction close to the mounting plate, the push plate is used for mounting a movable mold, the mounting plate is used for mounting a fixed mold, one side of the mounting plate far from the push plate is provided with an injection pipe, the injection pipe is provided with an injection runner, the injection runner comprises a square pipe runner, the square pipe runner is located on the side of the injection runner close to the mounting plate, the square pipe runner is provided with a limiting piece, and the limiting piece is used for closing the square pipe runner; when the injection liquid stops flowing, the limiting piece closes the square pipe runner, when the injection liquid flows in the direction close to the mounting plate, the liquid pushes the limiting piece to move, and the square pipe runner is in a flowing state. The limiting piece is arranged, the injection runner is closed through the limiting piece, and the application reduces the situation that the injection liquid flows out of the injection runner after the injection operation is completed.

Description

Technical Field

[0001] This application relates to the field of molds, and more particularly to an electric injection molding machine. Background Technology

[0002] An electric injection molding machine is an injection molding machine that is driven entirely by electric motors. Its power system includes PLC, frequency converter and servo control technology, which can achieve high precision control and significant energy saving, while avoiding the noise, heat generation and oil leakage problems common in hydraulic injection molding machines.

[0003] Refer to Chinese Utility Model Patent Publication No. CN206306359U, which discloses a fully electric injection molding machine, belonging to the field of mechanical technology. It solves the problems of inconvenient use, unreliable installation, friction and collision between parts, and low precision of existing injection molding machines. This utility model of a fully electric injection molding machine includes a base, an adjustment mechanism, a moving template, a feeding mechanism, and a barrel adjustment mechanism. A pull rod is fixedly connected to the fixed template. A moving template, which moves relative to the fixed template, is movably mounted on the base. The pull rod passes through the moving template without contacting it. A linear guide rail is provided between the moving template and the base. The bottom of the moving template is mounted on the linear guide rail and moves along its trajectory. This avoids the moving template moving in close contact with the pull rod, thus protecting the surface precision of the pull rod.

[0004] In practical use, when the injection molding stops and the injection structure is moved away from the fixed mold plate, the injection port loses its connection with the fixed mold plate, resulting in the injection liquid flowing out of the injection port, which is inconvenient and needs to be improved. Utility Model Content

[0005] In order to reduce the leakage of injection liquid from the injection port when the injection structure is far away from the fixed mold plate, this application provides an electric injection molding machine.

[0006] This application provides an electric injection molding machine, which adopts the following technical solution:

[0007] An electric injection molding machine includes a body, a mounting plate and a push plate. The push plate slides along the body in a direction closer to the mounting plate. The push plate is used to mount a moving mold, and the mounting plate is used to mount a fixed mold. An injection tube is provided on the side of the mounting plate away from the push plate. The injection tube has an injection channel, including a square tube channel located on the side closer to the mounting plate. The square tube channel has a limiting member for closing the square tube channel. When the injection liquid stops flowing, the limiting member closes the square tube channel. When the injection liquid flows towards the mounting plate, the liquid pushes the limiting member to move, and the square tube channel is in a flowing state.

[0008] By adopting the above technical solution, in actual use, when the injection tube stops injecting the injection liquid, the injection tube moves away from the mounting plate. At this time, the liquid in the injection channel may flow out. Therefore, a limiting component is set to close the injection channel and reduce the outflow of injection liquid. When the injection liquid is needed for the injection operation, the injection liquid pushes the limiting component to move, thereby facilitating normal injection operation.

[0009] Optionally, the limiting component includes a limiting plate, a first limiting magnet, and a second limiting magnet. The limiting plate rotates on the inner wall of the square tube flow channel, and the direction of rotation of the limiting plate is towards the mounting plate. The first limiting magnet is located on the side of the limiting plate near the mounting plate, and the second limiting magnet is located at the top of the inner wall of the square tube flow channel. The magnetic forces of the first limiting magnet and the second limiting magnet attract each other.

[0010] By adopting the above technical solution, a limiting plate, a limiting magnet one, and a limiting magnet two are set up. The magnetic forces of limiting magnet one and limiting magnet two attract each other. When the injection liquid flows, the injection liquid pushes the limiting plate to rotate. Because limiting magnet one and limiting magnet two are attracted, the limiting plate remains in contact with the top of the inner wall of the square tube flow channel. When the injection liquid stops flowing, the magnetic forces of limiting magnet one and limiting magnet two are insufficient to keep the limiting plate in contact with the top of the inner wall of the square tube flow channel. Therefore, the limiting plate rotates due to its own gravity. By performing the closing operation of the square tube flow channel in this way, the outflow of injection liquid is reduced.

[0011] Optionally, the outer wall of the injection-molded tube is provided with a heating ring, and the inner wall of the heating ring abuts against the outer wall of the injection-molded tube.

[0012] By adopting the above technical solution and setting a heating ring, the injection liquid in the injection channel is heated, which reduces the solidification of the injection liquid and makes the injection more stable.

[0013] Optionally, both the first limiting magnet and the second limiting magnet are AlNiCo magnets.

[0014] By adopting the above technical solution, in actual use, due to the setting of the heating ring, the temperature inside the injection molding channel is relatively high. This situation can easily cause damage to the magnetic force of the first limiting magnet and the second limiting magnet. Therefore, the first limiting magnet and the second limiting magnet are both AlNiCo magnets. This material has excellent high temperature stability and can withstand an operating temperature range of 500℃. It can maintain good magnetic properties near this temperature and has a longer service life.

[0015] Optionally, the injection tube is connected to an injection hopper, the injection hopper is connected to the injection flow channel, and the injection hopper is gradually widening in the direction away from the injection tube.

[0016] By adopting the above technical solution, an injection hopper is set up, and the injection hopper gradually expands in the direction away from the injection tube. The injection hopper is used to supply the injection liquid, making the injection operation more stable.

[0017] Optionally, the machine body is provided with a control unit, the control unit is connected to a coarse threaded rod, the coarse threaded rod passes through the injection molding channel, the coarse threaded rod rotates on the inner wall of the injection molding channel, and the rotation direction of the coarse threaded rod is its own axial direction.

[0018] By adopting the above technical solution and setting a coarse thread rod, when injection molding is required, the rotation of the coarse thread rod causes the injection liquid to move towards the mounting plate along the thread direction of the coarse thread rod, and makes the flow rate of the injection liquid more stable.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. A limiting component is set to close the injection channel, reducing the outflow of injection liquid. When injection liquid is needed for injection, the injection liquid pushes the limiting component to move, thus facilitating normal injection operation.

[0021] 2. A limiting plate, a limiting magnet one, and a limiting magnet two are set up. When the injection liquid stops flowing, the magnetic force of the limiting magnet one and the limiting magnet two is not enough to keep the limiting plate in contact with the top of the inner wall of the square tube flow channel. Therefore, the limiting plate rotates due to its own gravity. The square tube flow channel is closed in this way, reducing the outflow of injection liquid.

[0022] 3. A heating ring is installed to heat the injection liquid in the injection channel, reducing the solidification of the injection liquid and making the injection process more stable. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of an embodiment.

[0024] Figure 2 This is a partial schematic diagram of an embodiment, mainly showing the injection molding flow channel.

[0025] Figure 3 yes Figure 2 An enlarged diagram of A in the diagram.

[0026] Explanation of reference numerals in the attached drawings: 1. Body; 2. Mounting plate; 3. Push plate; 4. Control unit; 5. Injection tube; 6. Coarse threaded rod; 7. Heating ring; 8. Injection flow channel; 9. Injection hopper; 10. Square tube flow channel; 11. Limiting component; 12. Limiting plate; 13. Limiting magnet one; 14. Limiting magnet two; 15. Limiting magnet three. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses an electric injection molding machine. (Refer to...) Figure 1 The system includes a body 1, which has a mounting plate 2 and a push plate 3. The push plate 3 slides on the body 1 in a direction closer to the mounting plate 2. In this application, the push plate 3 is used to mount the moving mold, and the mounting plate 2 is used to mount the fixed mold.

[0029] The machine body 1 is equipped with a control unit 4, which is located on the side of the mounting plate 2 away from the push plate 3. The control unit 4 is equipped with an injection tube 5 and a coarse threaded rod 6. The injection tube 5 is located at the end of the control unit 4 closer to the mounting plate 2. A heating ring 7 is provided on the outer wall of the injection tube 5, and the inner wall of the heating ring 7 abuts against the outer wall of the injection tube 5. The injection tube 5 is equipped with an injection flow channel 8, which runs through the injection tube 5 and extends in a horizontal direction, allowing the injection liquid to flow in.

[0030] The injection tube 5 is connected to an injection hopper 9, which is located along the axis of the injection tube 5. The injection hopper 9 is connected to the injection flow channel 8 and gradually expands in the direction away from the injection tube 5. The injection flow channel 8 includes a square tube flow channel 10, which is located on the side of the injection flow channel 8 closest to the mounting plate 2. The square tube flow channel 10 is provided with a limiting member 11, which is used to close the square tube flow channel 10.

[0031] In this application, the limiting member 11 includes a limiting plate 12, a limiting magnet 13, and a limiting magnet 14. The limiting plate 12 is located on the top side of the inner wall of the square tube flow channel 10. The limiting plate 12 rotates on the inner wall of the square tube flow channel 10. The rotation direction of the limiting plate 12 is towards the mounting plate 2. The limiting magnet 13 is located on the side of the limiting plate 12 near the mounting plate 2. The limiting magnet 14 is located on the top of the inner wall of the square tube flow channel 10. The magnetic forces of the limiting magnet 13 and the limiting magnet 14 attract each other.

[0032] When injection molding is required, the flow of the injection liquid pushes the limiting plate 12 to move. When the limiting plate 12 rotates to near the top of the inner wall of the square tube flow channel 10, the limiting magnet 13 and the limiting magnet 14 attract each other. At this time, the magnetic force of the limiting magnets 13 and 14, combined with the impact of the liquid, causes the limiting plate 12 to abut against the top of the inner wall of the square tube flow channel 10. When the injection molding operation stops, the magnetic force of the limiting magnets 13 and 14 is insufficient to keep the limiting plate 12 abutting against the top of the inner wall of the square tube flow channel 10. The limiting plate 12 rotates and closes the square tube flow channel 10.

[0033] In this application, the inner wall of the square tube flow channel 10 is provided with a limiting magnet 3 15, and the magnetic force of the limiting magnet 3 15 attracts the magnetic force of the limiting magnet 1 13. In actual use, the limiting magnet 1 13, the limiting magnet 2 14 and the limiting magnet 3 15 are all AlNiCo magnets.

[0034] The coarse-threaded rod 6 is located at the end of the control unit 4 near the mounting plate 2. The coarse-threaded rod 6 passes through the injection channel 8 and rotates on the inner wall of the injection channel 8. The direction of rotation of the coarse-threaded rod 6 is its own axial direction. The coarse-threaded rod 6 is used to drive the flow of the injection molding liquid.

[0035] The implementation principle of an electric injection molding machine according to an embodiment of this application is as follows: In actual use, when injection molding is required, the injection liquid is introduced into the injection hopper 9 and flows from the injection hopper 9 into the injection channel 8. Subsequently, the coarse thread rod 6 rotates, causing the injection liquid to move towards the mounting plate 2. The injection liquid impacts the limiting plate 12, causing the limiting plate 12 to rotate. When the injection molding operation stops, the magnetic force of the limiting magnet 13 and the limiting magnet 14 is insufficient to keep the limiting plate 12 in contact with the top of the inner wall of the square tube channel 10. The limiting plate 12 rotates and closes the square tube channel 10. At this time, the limiting magnet 13 and the limiting magnet 15 attract each other.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric injection molding machine, comprising a machine body (1), characterized in that: The machine body (1) is provided with a mounting plate (2) and a push plate (3). The push plate (3) slides on the machine body (1). The sliding direction of the push plate (3) is closer to the mounting plate (2). The push plate (3) is used to install the moving mold. The mounting plate (2) is used to install the fixed mold. The side of the mounting plate (2) away from the push plate (3) is provided with an injection tube (5). The injection tube (5) is provided with an injection flow channel (8). The injection flow channel (8) includes a square tube flow channel (10). The square tube flow channel (10) is located on the side of the injection flow channel (8) closer to the mounting plate (2). The square tube flow channel (10) is provided with a limiting member (11). The limiting member (11) is used to close the square tube flow channel (10). When the injection liquid stops flowing, the limiting member (11) closes the square tube flow channel (10). When the injection liquid flows towards the mounting plate (2), the liquid pushes the limiting member (11) to move, and the square tube flow channel (10) is in a flow state.

2. The electric injection molding machine according to claim 1, characterized in that: The limiting component (11) includes a limiting plate (12), a limiting magnet one (13), and a limiting magnet two (14). The limiting plate (12) rotates on the inner wall of the square tube flow channel (10). The direction of rotation of the limiting plate (12) is towards the mounting plate (2). The limiting magnet one (13) is located on the side of the limiting plate (12) near the mounting plate (2). The limiting magnet two (14) is located at the top of the inner wall of the square tube flow channel (10). The magnetic forces of the limiting magnet one (13) and the limiting magnet two (14) attract each other.

3. The electric injection molding machine according to claim 2, characterized in that: The outer wall of the injection tube (5) is provided with a heating ring (7), and the inner wall of the heating ring (7) abuts against the outer wall of the injection tube (5).

4. The electric injection molding machine according to claim 3, characterized in that: Both the limiting magnet one (13) and the limiting magnet two (14) are AlNiCo magnets.

5. The electric injection molding machine according to claim 1, characterized in that: The injection tube (5) is connected to an injection hopper (9), which is connected to an injection flow channel (8). The injection hopper (9) gradually expands in a direction away from the injection tube (5).

6. The electric injection molding machine according to claim 1, characterized in that: The machine body (1) is provided with a control unit (4), and the control unit (4) is connected to a coarse thread rod (6). The coarse thread rod (6) is inserted into the injection flow channel (8). The coarse thread rod (6) rotates on the inner wall of the injection flow channel (8). The rotation direction of the coarse thread rod (6) is the direction of its own axis.

Images