Automatic monitoring control equipment for valve needle

Abstract

The utility model discloses automatic monitoring and controlling equipment for a valve needle, which belongs to the technical field of injection molding equipment, aims at solving the problem that the existing injection molding equipment lacks real-time monitoring and controlling on the movement displacement and speed of the valve needle, and comprises a base and a plurality of supporting columns, the electromagnetic flow valve, the electromagnetic reversing valve and the hydraulic cylinder are arranged to be matched, the electromagnetic reversing valve and the electromagnetic flow valve are used in an overlapped mode, the hydraulic cylinder is controlled by the electromagnetic reversing valve to drive a piston to move up and down, the electromagnetic flow valve and the electromagnetic reversing valve are matched, the electromagnetic flow valve and the electromagnetic reversing valve are matched to drive the piston to move up and down, and the injection molding valve needles are arranged in the injection molding valve needles. And the flow of hydraulic oil is controlled through the electromagnetic flow valve, so that the speed of the injection molding valve needle is controlled, the speed of the injection molding valve needle can be adjusted according to requirements in actual production, and the flexibility of injection molding work is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding equipment, and in particular relates to a valve needle automatic monitoring and control device. Background Art

[0002] Injection molding is a common plastic processing method, also known as injection molding. During the injection molding process, the heated and molten plastic is injected into the mold cavity through a nozzle, and the desired shape of the product is obtained after cooling and solidification. Injection molding is usually used to produce various plastic products, such as parts, containers, packaging, etc. Injection valve needles usually refer to parts used to control the flow of plastic in injection molds. The valve needle is located in the injection system of the mold. It controls the flow of plastic by controlling the opening and closing of the valve to ensure that the plastic can fully fill the mold cavity, thereby obtaining the desired shape of the plastic part. Injection valve needles are usually made of wear-resistant materials, such as alloy steel or cemented carbide, to ensure long-term stable working performance. Choosing a suitable valve needle is crucial to the quality and efficiency of injection molding.

[0003] When the molten plastic is injected into the cavity of the mold through the nozzle, the movement displacement and movement speed of the valve needle play a crucial role in the injection molding quality. However, the existing injection molding equipment lacks a device for real-time monitoring and control of the movement displacement and speed of the valve needle. Most of the existing technologies set the opening and closing of the needle valve based on the experience of the mold trial worker, and are unable to flexibly adjust the movement displacement and speed of the valve needle according to actual needs.

[0004] Therefore, there is a need for an automatic monitoring and control device for a valve needle to solve the problem in the prior art that the injection molding device lacks real-time monitoring and control of the movement displacement and speed of the valve needle. Utility Model Content

[0005] The purpose of the utility model is to provide a valve needle automatic monitoring and control device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve needle automatic monitoring and control device, including a base and a plurality of support columns, the top of the base is fixedly connected to a mounting plate, the front end of the mounting plate is equipped with two injection molding feed ports, the two injection molding feed ports are both equipped with injection molding valve needles, the top of the mounting plate is fixedly connected to an L-shaped support plate, the top of the L-shaped support plate is fixedly connected to a connecting plate, the outer side of the connecting plate is fixedly connected to a hydraulic cylinder, an electromagnetic flow valve is installed near the top position of the outer side of the hydraulic cylinder, an electromagnetic reversing valve is installed near the bottom position of the outer side of the hydraulic cylinder, an eddy current displacement sensor is installed at the rear end of the hydraulic cylinder, a plurality of the support columns are fixedly connected to a workbench on the top, a support rod is fixedly connected to the top of the workbench, a time controller is installed at the front end of the support rod, a signal collector is fixedly connected to the top of the workbench, and a display screen is fixedly connected to the top of the workbench.

[0007] It should be noted in the solution that the injection-molded valve needle is made of ceramic material.

[0008] It is further worth noting that the outer wall of the injection valve needle fits tightly with the bottom opening of the injection feed port.

[0009] It should be further explained that the electromagnetic flow valve corresponds to the hydraulic cylinder driving piston.

[0010] As a preferred implementation, the electromagnetic reversing valve corresponds to the flow rate of the hydraulic oil in the hydraulic cylinder.

[0011] As a preferred implementation, a protective film is attached to the top of the display screen.

[0012] As a preferred implementation manner, the eddy current displacement sensor, the signal collector and the display screen are electrically connected.

[0013] Compared with the prior art, the valve needle automatic monitoring and control device provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting up an electromagnetic flow valve, an electromagnetic reversing valve and a hydraulic cylinder to cooperate, the electromagnetic reversing valve and the electromagnetic flow valve are used in combination, and the electromagnetic reversing valve controls the hydraulic cylinder to drive the piston to move up and down, thereby driving the injection valve needle to realize the opening and closing process, and the electromagnetic flow valve controls the flow of hydraulic oil, thereby controlling the injection valve needle speed, so that the injection valve needle speed can be adjusted according to the needs of actual production, thereby improving the flexibility of injection molding work.

[0015] (2) By setting up an eddy current displacement sensor, when the injection valve needle is opened, the injection valve needle displacement monitoring is to measure the piston stroke of the hydraulic cylinder through the eddy current displacement sensor installed on the hydraulic cylinder to obtain the displacement data of the injection valve needle. The eddy current displacement sensor transmits the signal to the signal collector through the data line. The signal collector converts the displacement signal into a digital signal and then displays it on the display screen, which is convenient for real-time monitoring and control of the movement displacement and speed of the injection valve needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a structural schematic diagram of the valve needle of the utility model in a closed state;

[0019] Figure 4 It is a structural schematic diagram of the valve needle of the utility model in the open state.

[0020] In the figure: 1. Base; 2. Mounting plate; 3. Injection molding feed port; 4. Injection molding valve needle; 5. L-shaped support plate; 6. Connecting plate; 7. Hydraulic cylinder; 8. Electromagnetic flow valve; 9. Electromagnetic reversing valve; 10. Eddy current displacement sensor; 11. Support column; 12. Workbench; 13. Support rod; 14. Time controller; 15. Signal collector; 16. Display screen. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4 The utility model provides a valve needle automatic monitoring and control device, including a base 1 and a plurality of support columns 11, characterized in that: a mounting plate 2 is fixedly connected to the top of the base 1, two injection molding feed ports 3 are installed at the front end of the mounting plate 2, injection molding valve needles 4 are installed inside the two injection molding feed ports 3, an L-shaped support plate 5 is fixedly connected to the top of the mounting plate 2, a connecting plate 6 is fixedly connected to the top of the L-shaped support plate 5, a hydraulic cylinder 7 is fixedly connected to the outside of the connecting plate 6, an electromagnetic flow valve 8 is installed near the top of the outside of the hydraulic cylinder 7, an electromagnetic reversing valve 9 is installed near the bottom of the outside of the hydraulic cylinder 7, an eddy current displacement sensor 10 is installed at the rear end of the hydraulic cylinder 7, a workbench 12 is fixedly connected to the top of the plurality of support columns 11, a support rod 13 is fixedly connected to the top of the workbench 12, a time controller 14 is installed at the front end of the support rod 13, a signal collector 15 is fixedly connected to the top of the workbench 12, and a display screen 16 is fixedly connected to the top of the workbench 12.

[0023] Further Figure 3 and Figure 4 As shown, it is worth mentioning that the injection valve needle 4 is made of ceramic material. The ceramic material has excellent high temperature resistance, can work stably for a long time in a high temperature environment, is not easy to soften or melt, and has a strong ability to corrode acids, alkalis and other chemical substances, and has good corrosion resistance. At the same time, the ceramic material has high hardness, wear resistance, is not easy to deform, and has good wear resistance, which greatly improves the service life of the injection valve needle 4.

[0024] Further Figure 3 and Figure 4 As shown, it is worth explaining in detail that the outer wall of the injection valve needle 4 fits tightly with the bottom opening of the injection feeding port 3 to ensure that during injection molding production, the hydraulic cylinder 7 drives the injection valve needle 4 to open, and at the same time the rubber begins to be injected into the mold cavity. After the injection molding is completed, the injection valve needle 4 is closed, and finally the mold is opened to take out the product. The addition of injection molding material is controlled by the opening and closing of the injection valve needle 4, and the whole process is safe and reliable.

[0025] According to the above working process, it can be known that by setting the injection valve needle 4 made of ceramic material and the injection feeding port 3, the service life of the injection valve needle 4 is greatly improved. At the same time, the hydraulic cylinder 7 drives the injection valve needle 4 to open and close to control the addition of injection material. The whole process is safe and reliable.

[0026] Further Figure 1 and Figure 2 As shown, it is worth explaining in detail that the electromagnetic flow valve 8 corresponds to the hydraulic cylinder driving piston, and the electromagnetic flow valve 8 controls the flow of the hydraulic oil, thereby controlling the speed of the injection valve needle 4, so that the speed of the injection valve needle 4 can be adjusted according to the needs of actual production.

[0027] Further Figure 1 and Figure 2 As shown, it is worth explaining in detail that the electromagnetic reversing valve 9 corresponds to the flow rate of the hydraulic oil in the hydraulic cylinder. The electromagnetic reversing valve 9 controls the hydraulic cylinder 7 to drive the piston to move up and down, thereby driving the injection valve needle 4 to realize the opening and closing process.

[0028] Further Figure 1 and Figure 2 As shown, it is worth explaining in detail that a protective film is attached to the top of the display screen 16 to protect the display screen 16, improve the strength and pressure resistance of the display screen 16, prevent scratches during the injection molding process, and extend the service life of the device.

[0029] Further Figure 1 and Figure 2As shown, it is worth mentioning that the eddy current displacement sensor 10, the signal collector 15 and the display screen 16 are electrically connected. When the injection valve needle 4 is opened, the eddy current displacement sensor 10 measures the piston stroke of the hydraulic cylinder 7 to obtain the displacement data of the injection valve needle 4. The eddy current displacement sensor 10 transmits the signal to the signal collector 15 through the data line. The signal collector 15 converts the displacement signal into a digital signal and then displays it through the display screen 16, which is convenient for real-time monitoring and control of the movement displacement and speed of the injection valve needle 4.

[0030] This solution has the following working process: in actual use, after the mold is closed and the solenoid valve receives the injection molding machine's start injection signal, the hydraulic cylinder 7 is driven to start working through the time controller 14, and the hydraulic cylinder 7 drives the injection valve needle 4 to open, and at the same time the rubber starts to be injected into the mold cavity. After the injection is completed, the injection valve needle 4 is closed, and finally the mold is opened to take out the product. During injection molding, the eddy current displacement sensor 10 measures the piston stroke of the hydraulic cylinder 7 and obtains the displacement data of the injection valve needle 4. The eddy current displacement sensor 10 transmits the signal to the signal collector 15 through the data line, and the signal collector 15 converts the displacement signal into a digital signal and then displays it through the display screen 16.

[0031] In summary: by setting the electromagnetic flow valve 8, the electromagnetic reversing valve 9 and the hydraulic cylinder 7 to cooperate, the electromagnetic reversing valve 9 and the electromagnetic flow valve 8 are used in combination, the electromagnetic reversing valve 9 controls the hydraulic cylinder 7 to drive the piston to move up and down, thereby driving the injection valve needle 4 to realize the opening and closing process, and the electromagnetic flow valve 8 controls the flow of hydraulic oil, thereby controlling the speed of the injection valve needle 4, so that the speed of the injection valve needle can be adjusted according to the needs of actual production, thereby improving the flexibility of the injection molding work; when the injection valve needle 4 is opened, the eddy current displacement sensor 10 measures the piston stroke of the hydraulic cylinder 7 and obtains the displacement data of the injection valve needle 4, and the eddy current displacement sensor 10 transmits the signal to the signal collector 15 through the data line, and the signal collector 15 converts the displacement signal into a digital signal and then displays it through the display screen 16, so as to facilitate the real-time monitoring and control of the movement displacement and speed of the injection valve needle 4.

Claims

1. A valve needle automatic monitoring and control device, comprising a base (1) and a plurality of support columns (11), characterized in that: The top of the base (1) is fixedly connected to a mounting plate (2), the front end of the mounting plate (2) is equipped with two injection molding feed ports (3), the two injection molding feed ports (3) are internally equipped with injection molding valve needles (4), the top of the mounting plate (2) is fixedly connected to an L-shaped support plate (5), the top of the L-shaped support plate (5) is fixedly connected to a connecting plate (6), the outer side of the connecting plate (6) is fixedly connected to a hydraulic cylinder (7), the outer side of the hydraulic cylinder (7) is equipped with an electromagnetic flow valve (8) near the top, and the hydraulic An electromagnetic reversing valve (9) is installed near the bottom of the outer side of the cylinder (7); an eddy current displacement sensor (10) is installed at the rear end of the hydraulic cylinder (7); a workbench (12) is fixedly connected to the top of the plurality of support columns (11); a support rod (13) is fixedly connected to the top of the workbench (12); a time controller (14) is installed at the front end of the support rod (13); a signal collector (15) is fixedly connected to the top of the workbench (12); and a display screen (16) is fixedly connected to the top of the workbench (12).

2. The valve needle automatic monitoring and control device according to claim 1, characterized in that: The injection-molded valve needle (4) is made of ceramic material.

3. The valve needle automatic monitoring and control device according to claim 1, characterized in that: The outer wall of the injection molding valve needle (4) is tightly fitted with the bottom opening of the injection molding feed port (3).

4. The valve needle automatic monitoring and control device according to claim 1, characterized in that: The electromagnetic flow valve (8) corresponds to the hydraulic cylinder driving piston.

5. The valve needle automatic monitoring and control device according to claim 1, characterized in that: The electromagnetic reversing valve (9) corresponds to the flow rate of the hydraulic oil in the hydraulic cylinder.

6. The valve needle automatic monitoring and control device according to claim 1, characterized in that: A protective film is attached to the top of the display screen (16).

7. The valve needle automatic monitoring and control device according to claim 1, characterized in that: The eddy current displacement sensor (10), the signal collector (15) and the display screen (16) are electrically connected.

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