Automatic high frequency plastic heat sealing device

Abstract

The application relates to an automatic high-frequency plastic heat sealing device, and belongs to the technical field of plastic heat sealing devices.The automatic high-frequency plastic heat sealing device comprises a bottom plate, an electronic tube self-excitation oscillator is fixed to the right side of a support frame, an electric push rod is fixed to the upper surface of the support frame through a mounting frame, the outer side of an output shaft of the electric push rod slides through the support frame and extends to the inside, and the heat sealing mechanism comprises a fixed plate, two first telescopic rods, two spring telescopic rods, a lower pressing plate, an upper electrode plate and a sliding assembly, the fixed plate is fixed to the outer side of the output shaft of the electric push rod. The automatic high-frequency plastic heat sealing device is provided with a full-automatic control system, the labor efficiency is remarkably improved, the electronic time-limit switch accurately controls the melting and cooling time, the product quality is improved, the low-loss coaxial oscillator enhances the output, the melting time is shortened, the overcurrent protection and spark protection devices improve the safety of the equipment, the push-pull type workbench is convenient to operate, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of plastic heat sealing equipment technology, and in particular to an automated high-frequency plastic heat sealing equipment. Background Technology

[0002] High-frequency plastic heat sealing technology is widely used in the processing of plastic products, especially the welding of PVC materials. Traditional high-frequency heat sealing equipment is usually operated manually, which has low production efficiency and lacks precise time control and safety protection mechanisms. As modern enterprises have increasing demands for automation, efficiency and safety, traditional equipment can no longer meet production requirements. In recent years, the application of automation control technology in high-frequency heat sealing equipment has gradually increased, but problems such as insufficient output, unstable welding time and poor safety still exist.

[0003] In existing technologies, high-frequency plastic heat sealing equipment typically employs the following solutions: manual operation mode, where operators manually place the material and control the electrode pressing and lifting, which is labor-intensive and inefficient; semi-automatic control mode, which uses a simple mechanical timer to control the welding time, but with poor precision; and the use of ordinary oscillators, which have weak output and long welding times. The disadvantages of these solutions include: low efficiency and poor safety in manual operation; insufficient timing accuracy in semi-automatic control, leading to unstable welding quality; and insufficient output of ordinary oscillators, affecting production efficiency.

[0004] The main drawbacks of existing technologies include: lack of fully automatic control, low labor efficiency, inaccurate control of welding time, affecting product quality, insufficient output, long welding time, imperfect safety protection mechanism, easy equipment damage, complex operation, and high technical requirements for operators. Therefore, an automated high-frequency plastic heat sealing device is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an automated high-frequency plastic heat sealing device, which has the advantages of fully automatic control and high labor efficiency. It solves the problems of traditional equipment, such as lack of fully automatic control, low labor efficiency, inaccurate control of welding time affecting product quality, insufficient output, long welding time, imperfect safety protection mechanism, easy equipment damage, complex operation, and high technical requirements for operators.

[0006] In summary, this application provides the following technical solution: an automated high-frequency plastic heat sealing device, including a base plate, a support frame fixed on the upper surface of the base plate, an electron tube self-excited oscillator fixed on the right side of the support frame, an electric push rod fixed on the upper surface of the support frame by a mounting bracket, the outer side of the output shaft of the electric push rod slidingly through the support frame and extending into the interior, a heat sealing mechanism provided on the outer side of the output shaft of the electric push rod, and a control component provided on the right side of the front of the support frame;

[0007] The heat sealing mechanism includes a fixed plate, two first telescopic rods, two spring telescopic rods, a lower pressure plate, an upper electrode plate, and a sliding assembly. The fixed plate is fixed to the outside of the output shaft of the electric push rod. The two first telescopic rods are fixed to the left and right sides of the top wall of the inner cavity of the support frame. The left and right sides of the upper surface of the fixed plate are fixedly connected to the bottom ends of the left and right first telescopic rods. The two spring telescopic rods are fixed to the left and right sides of the lower surface of the fixed plate. The lower pressure plate is fixed to the lower surface of the left and right spring telescopic rods. The upper electrode plate is embedded and fixed inside the lower surface of the lower pressure plate.

[0008] The control assembly includes, from top to bottom, a mode adjustment switch, a high-frequency switch, an emergency stop button, and a start button, all located on the right side of the front of the support frame. The control assembly also includes a mounting plate fixed to the right side of the support frame, on the front of which, from top to bottom, are fixed a circuit breaker, an overcurrent protection device, and a voltage regulator.

[0009] By adopting the above-mentioned technical solution, this application significantly improves labor efficiency through the use of a fully automatic control system, improves product quality by precisely controlling the welding and cooling time with an electronic timer switch, and enhances output by using a low-loss coaxial oscillator to shorten the welding time.

[0010] Furthermore, the sliding assembly includes two sliding grooves, two sliding rods, a sliding table, a lower electrode plate, and two sliders. The two sliding grooves are both formed on the left and right sides of the upper surface of the base plate. The two sliding rods are both fixed inside the left and right sliding grooves. The lower electrode plate is embedded and fixed inside the upper surface of the sliding table. The two sliders are slidably connected to the outside of the left and right sliding rods. The upper surfaces of the left and right sliders are fixedly connected to the left and right sides of the lower surface of the sliding table. The sliders are slidably connected inside the sliding grooves. The sliding table is slidably connected to the upper surface of the base plate.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the raw material is placed on the slide table, and then the handle is pushed and sent into the working position.

[0012] Furthermore, the sliding assembly also includes a fixing rod fixed to the front of the slide table, and a handle is fixed to the front of the fixing rod.

[0013] The advantage of adopting the above-mentioned further solution is that the slide can be pushed by the handle.

[0014] Furthermore, the sliders all move linearly back and forth on the outside of the groove and the sliding rod.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the slider can move linearly back and forth on the outside of the sliding rod, thereby improving the stability of the sliding table.

[0016] Furthermore, the first telescopic rod includes a first slide rod, and a second slide rod is slidably connected inside the first slide rod.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that the second slide rod moves linearly up and down inside the first slide rod.

[0018] Furthermore, the spring telescopic rod includes a third slide rod, a fourth slide rod is slidably connected inside the third slide rod, and a spring is movably fitted on the outer side of the third slide rod.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the stability of the lower pressure plate can be improved by using the spring telescopic rods on the left and right sides.

[0020] Furthermore, both the upper and lower electrode plates are electrically connected to the electron tube self-excited oscillator via wires.

[0021] The beneficial effects of adopting the above-mentioned further scheme are: a high-frequency electromagnetic field is generated by the electron tube self-excited oscillator, and a high-frequency electromagnetic field is formed between the upper electrode plate and the lower electrode plate. The high-frequency electromagnetic field polarizes the molecules inside the plastic and generates heat through friction.

[0022] Furthermore, the first telescopic rods on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the support frame.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the stability of the fixed plate moving up and down can be improved by using the first telescopic rods on the left and right sides.

[0024] Compared with the prior art, this application provides an automated high-frequency plastic heat sealing device, which has the following advantages:

[0025] This automated high-frequency plastic heat sealing device significantly improves labor efficiency through a fully automatic control system. Electronic time limit switches precisely control welding and cooling times, improving product quality. Low-loss coaxial oscillators enhance output and shorten welding time. Overcurrent and spark protection devices improve equipment safety. The push-pull worktable design facilitates operation and improves production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 This is a top view of the base plate and support frame of this application;

[0028] Figure 3 This is a schematic diagram of the heat sealing mechanism in this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Base plate; 2. Support frame; 3. Electron tube self-excited oscillator; 4. Electric push rod; 5. Heat sealing mechanism; 51. Fixing plate; 52. First telescopic rod; 53. Spring telescopic rod; 54. Lower pressure plate; 55. Upper electrode plate; 56. Slide groove; 57. Sliding rod; 58. Slide table; 59. Lower electrode plate; 510. Slider; 511. Handle; 6. Mold adjustment switch; 7. High frequency switch; 8. Emergency stop button; 9. Start button; 10. Mounting plate; 11. Circuit breaker; 12. Overcurrent protection device; 13. Voltage regulator. Detailed Implementation

[0031] Please see Figures 1 to 2 The device includes a base plate 1, a support frame 2 fixed on the upper surface of the base plate 1, an electron tube self-excited oscillator 3 fixed on the right side of the support frame 2, an electric push rod 4 fixed on the upper surface of the support frame 2 by a mounting bracket, the outer side of the output shaft of the electric push rod 4 slides through the support frame 2 and extends into the interior, a heat sealing mechanism 5 is provided on the outer side of the output shaft of the electric push rod 4, and a control component is provided on the right side of the front of the support frame 2.

[0032] The control components include a mode adjustment switch 6, a high-frequency switch 7, an emergency stop button 8, and a start button 9, which are arranged sequentially from top to bottom on the right side of the front of the support frame 2. The control components also include a mounting plate 10 fixed to the right side of the support frame 2. A circuit breaker 11, an overcurrent protection device 12, and a voltage regulator 13 are fixed sequentially from top to bottom on the front of the mounting plate 10.

[0033] It should be noted that the circuit breaker 11 is used to control the power supply, the emergency stop button 8 is used to stop the machine in an emergency, the start button 9 is used to start the automatic working process, the overcurrent protection device 12 is used to protect the electron tube, and the voltage regulator 13 is used to regulate the power supply voltage.

[0034] It should be noted that when the raw material is placed on the slide table 58, the mold adjustment switch 6 is moved to the downward position to adjust the mold status. When the mold adjustment switch 6 is moved to the upward position, the normal working state is entered. When the high frequency switch 7 is moved to the upward position, the high frequency operation state is entered. When the start button 9 is pressed, the machine will automatically complete the electrode pressing, welding, cooling and electrode rising process. In case of emergency, press the emergency stop button 8 to stop the machine.

[0035] Please see Figure 3In this embodiment, the heat sealing mechanism 5 includes a fixed plate 51, two first telescopic rods 52, two spring telescopic rods 53, a lower pressure plate 54, an upper electrode plate 55, and a sliding assembly. The fixed plate 51 is fixed to the outside of the output shaft of the electric push rod 4. The two first telescopic rods 52 are fixed to the left and right sides of the top wall of the inner cavity of the support frame 2. The left and right sides of the upper surface of the fixed plate 51 are fixedly connected to the bottom ends of the left and right first telescopic rods 52. The two spring telescopic rods 53 are fixed to the left and right sides of the lower surface of the fixed plate 51. The lower pressure plate 54 is fixed to the lower surface of the left and right spring telescopic rods 53. The upper electrode plate 55 is embedded and fixed inside the lower surface of the lower pressure plate 54.

[0036] The sliding assembly includes two slide grooves 56, two sliding rods 57, a slide table 58, a lower electrode plate 59, and two sliders 510. The two slide grooves 56 are both opened on the left and right sides of the upper surface of the base plate 1. The two sliding rods 57 are both fixed inside the left and right slide grooves 56. The lower electrode plate 59 is embedded and fixed inside the upper surface of the slide table 58. The two sliders 510 are slidably connected to the outside of the left and right sliding rods 57. The upper surfaces of the left and right sliders 510 are fixedly connected to the left and right sides of the lower surface of the slide table 58. The sliders 510 are slidably connected inside the slide grooves 56. The slide table 58 is slidably connected to the upper surface of the base plate 1.

[0037] The sliding assembly also includes a fixed rod fixed to the front of the slide table 58. A handle 511 is fixed to the front of the fixed rod. The sliders 510 move linearly back and forth on the outside of the slide groove 56 and the sliding rod 57. The first telescopic rod 52 includes a first slide rod, and a second slide rod is slidably connected inside the first slide rod. The spring telescopic rod 53 includes a third slide rod, and a fourth slide rod is slidably connected inside the third slide rod. A spring is movably fitted on the outside of the third slide rod. The upper electrode plate 55 and the lower electrode plate 59 are electrically connected to the electron tube self-excited oscillator 3 through wires. The first telescopic rods 52 on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the support frame 2.

[0038] This equipment is a high-performance model designed for manufacturing a wider variety of PVC plastic products. The push-pull worktable is more suitable for blister packaging products. It adopts an easy-to-operate automatic control system to meet the needs of modern enterprises. It has strong output and high performance, uses a low-loss coaxial vibrator, and a specially designed coaxial tuner to make the output stronger, reduce welding time, and increase production.

[0039] The machine features fully automatic electronic control. Users simply place the raw materials in the machine and feed them in; the fully automatic control system then completes the electrode pressing, welding, cooling, and electrode rising processes, significantly improving labor efficiency. The equipment is equipped with an electronic timer switch, which automatically controls the welding and cooling time, allowing for settings of 0-10 seconds. Safety features include an overcurrent protection device (12) that automatically cuts off the high-frequency current to protect the oscillating tube and rectifier in case of abnormalities. An internal spark protection device automatically cuts off the high-frequency current when the upper and lower electrodes ignite, protecting the mold and workpiece. High efficiency and safety are ensured. The machine provides stable electrode pressure, resulting in consistent melting effects and improved product quality. Furthermore, manual operation eliminates the need for direct contact with the electrodes, enhancing safety.

[0040] Among them, the adoption of a fully automatic control system significantly improves labor efficiency, the electronic time limit switch precisely controls the welding and cooling time to improve product quality, the low-loss coaxial oscillator enhances output and shortens welding time, the overcurrent protection and spark protection devices improve equipment safety, and the push-pull worktable design facilitates operation and improves production efficiency.

[0041] It should be noted that the raw material is placed on the slide table 58, and then the handle 511 is pushed and sent into the working position. After the start button 9 is pressed, the outer side of the output shaft of the electric push rod 4 drives the fixed plate 51, the lower pressure plate 54 and the upper electrode plate 55 to move downward and press down. A high-frequency electromagnetic field is formed between the upper electrode plate 55 and the lower electrode plate 59. The high-frequency electromagnetic field polarizes the molecules inside the plastic and generates heat through friction. Under the pressure of the lower pressure plate 54, the welding purpose is achieved. After the welding is completed, the electric push rod 4 is started to drive the upper electrode plate 55 to rise. The cooling time is controlled by the electronic time limit switch.

[0042] The working principle of the above embodiments is as follows:

[0043] During operation, the raw material is placed on the slide table 58, then the handle 511 is pushed and sent into the working position. After the start button 9 is pressed, the outer side of the output shaft of the electric push rod 4 drives the fixed plate 51, the lower pressure plate 54, and the upper electrode plate 55 to move downward and press down. The electron tube self-excited oscillator 3 generates a high-frequency electromagnetic field, forming a high-frequency electromagnetic field between the upper electrode plate 55 and the lower electrode plate 59. The high-frequency electromagnetic field polarizes the molecules inside the plastic and generates heat through friction. Under the pressure of the lower pressure plate 54, the welding purpose is achieved. After the welding is completed, the electric push rod 4 is started to drive the upper electrode plate 55 to rise. The cooling time is controlled by an electronic time limit switch. This equipment is a high-performance machine designed for the need to manufacture more different types of PVC plastic products. The push-pull worktable is more suitable for blister packaging products. It adopts an easy-to-operate automatic control system to adapt to the needs of modern enterprises. It has strong output and high performance, uses a low-loss coaxial oscillator, and a specially designed coaxial tuner makes the output stronger, reduces the welding time, and increases the production volume.

Claims

1. An automated high-frequency plastic heat sealing device, comprising a base plate (1), characterized in that: A support frame (2) is fixed on the upper surface of the base plate (1). An electron tube self-excited oscillator (3) is fixed on the right side of the support frame (2). An electric push rod (4) is fixed on the upper surface of the support frame (2) by a mounting bracket. The outer side of the output shaft of the electric push rod (4) slides through the support frame (2) and extends into the interior. A heat sealing mechanism (5) is provided on the outer side of the output shaft of the electric push rod (4). A control component is provided on the right side of the front of the support frame (2). The heat sealing mechanism (5) includes a fixed plate (51), two first telescopic rods (52), two spring telescopic rods (53), a lower pressure plate (54), an upper electrode plate (55), and a sliding assembly. The fixed plate (51) is fixed to the outside of the output shaft of the electric push rod (4). The two first telescopic rods (52) are fixed to the left and right sides of the top wall of the inner cavity of the support frame (2). The left and right sides of the upper surface of the fixed plate (51) are fixedly connected to the bottom ends of the left and right first telescopic rods (52). The two spring telescopic rods (53) are fixed to the left and right sides of the lower surface of the fixed plate (51). The lower pressure plate (54) is fixed to the lower surface of the left and right spring telescopic rods (53). The upper electrode plate (55) is embedded and fixed inside the lower surface of the lower pressure plate (54). The control assembly includes a mode adjustment switch (6), a high-frequency switch (7), an emergency stop button (8), and a start button (9) arranged sequentially from top to bottom on the right side of the front of the support frame (2). The control assembly also includes a mounting plate (10) fixed on the right side of the support frame (2). A circuit breaker (11), an overcurrent protection device (12), and a voltage regulator (13) are fixed sequentially from top to bottom on the front of the mounting plate (10).

2. The automated high-frequency plastic heat sealing device according to claim 1, characterized in that: The sliding assembly includes two slide grooves (56), two sliding rods (57), a slide table (58), a lower electrode plate (59), and two sliders (510). The two slide grooves (56) are opened on the left and right sides of the upper surface of the base plate (1). The two sliding rods (57) are fixed inside the left and right slide grooves (56). The lower electrode plate (59) is embedded and fixed inside the upper surface of the slide table (58). The two sliders (510) are slidably connected to the outside of the left and right sliding rods (57). The upper surfaces of the left and right sliders (510) are fixedly connected to the left and right sides of the lower surface of the slide table (58). The sliders (510) are slidably connected inside the slide grooves (56). The slide table (58) is slidably connected to the upper surface of the base plate (1).

3. The automated high-frequency plastic heat sealing device according to claim 2, characterized in that: The sliding assembly also includes a fixing rod fixed to the front of the slide (58), and a handle (511) is fixed to the front of the fixing rod.

4. The automated high-frequency plastic heat sealing device according to claim 2, characterized in that: The sliders (510) all move linearly back and forth on the outside of the groove (56) and the sliding rod (57).

5. The automated high-frequency plastic heat sealing device according to claim 1, characterized in that: The first telescopic rod (52) includes a first slide rod, and a second slide rod is slidably connected inside the first slide rod.

6. The automated high-frequency plastic heat sealing device according to claim 1, characterized in that: The spring telescopic rod (53) includes a third slide rod, a fourth slide rod is slidably connected inside the third slide rod, and a spring is movably fitted on the outside of the third slide rod.

7. An automated high-frequency plastic heat sealing device according to claim 2, characterized in that: The upper electrode plate (55) and the lower electrode plate (59) are both electrically connected to the electron tube self-excited oscillator (3) via wires.

8. The automated high-frequency plastic heat sealing device according to claim 1, characterized in that: The first telescopic rods (52) on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal centerline of the support frame (2).

Images