High-sensitivity electronic spark protector

Abstract

A high-sensitivity electronic spark protector provided by the utility model comprises an upper die plate, a lower die holder, positioning rods, a power-on switch and a contact sensor, the upper die plate is arranged right above the lower die holder, the positioning rods are arranged at the bottom of the upper die plate along the corners of the periphery, the lower die holder is provided with positioning holes corresponding to the positioning rods, and the power-on switch is arranged in the positioning holes. The contact sensor is installed in the positioning hole, the power-on switch is used for controlling power-on and power-off of the high-frequency machine, and the contact sensor and the power-on switch are electrically connected with the single-chip microcomputer. When the high-frequency machine performs mold closing, the upper mold plate moves downwards, the positioning rods enter the corresponding positioning holes and then make contact with the contact sensors in the positioning holes, at the moment, mold closing of the upper mold plate and the lower mold base is completed, the contact sensors send signals to the single-chip microcomputer, the single-chip microcomputer drives the power-on switch to be turned on, the high-frequency machine is powered on to generate a magnetic field, and then the high-frequency machine is started. Therefore, the problem that a high-frequency machine is powered on before the upper die and the lower die are not in contact, and electric sparks are generated is avoided.

Description

Technical Field

[0001] The utility model relates to the field of high-frequency equipment, in particular to a high-sensitivity electronic spark protector. Background Art

[0002] High-frequency machines use high-frequency electromagnetic fields to make the molecules inside the material collide violently with each other to generate high temperatures to achieve the purpose of welding and fusion. High-frequency machines are widely used. At present, there are high-frequency plastic welding machines, high-frequency leather-plastic fusing machines, high-frequency folding box creasing machines, high-frequency metal heating machines, etc. However, when using high-frequency machines for processing, sometimes the upper and lower templates will directly spark. Due to sparks, the pressed products will be scrapped, the molds will be damaged, or the electrode plates will be burned, causing certain economic losses. The sparks caused by high-frequency machines are usually caused by the following factors:

[0003] 1. When the high-frequency machine is powered on before the upper and lower molds come into contact, there is air or other dielectrics between the upper and lower molds, and the electric field strength is high enough, these dielectrics may be ionized to form a conductive channel, thereby generating electric sparks;

[0004] 2. There are foreign objects such as metal chips or dust on the upper and lower dies of the high-frequency machine. When high-frequency electromagnetic waves irradiate the surface of the workpiece, it may cause unstable current and generate partial discharge on the surface, resulting in sparks;

[0005] Therefore, providing a high-sensitivity electronic spark protector to prevent ignition from occurring has become a problem that needs to be solved urgently. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In order to solve the above problems in the prior art, the utility model provides a high-sensitivity electronic spark protector.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0010] A high-sensitivity electronic spark protector comprises an upper mold plate, a lower mold base, a positioning rod, a power switch and a contact sensor;

[0011] The upper mold plate is arranged directly above the lower mold base, and the positioning rods are arranged at the four corners of the bottom of the upper mold plate;

[0012] The lower die base is provided with a positioning hole corresponding to the positioning rod;

[0013] The contact sensor is installed in the positioning hole;

[0014] The power switch is used to control the power on and off of the high frequency machine;

[0015] The contact sensor and the power switch are both electrically connected to the single chip microcomputer.

[0016] Preferably, the contact sensor is a pressure contact sensor.

[0017] Preferably, it also includes a warning light, the warning light is electrically connected to the single chip microcomputer

[0018] Preferably, it also includes a dust removal mechanism, which is used to remove dust from the material contact surfaces of the upper mold plate and the lower mold base.

[0019] Preferably, the dust removal mechanism includes a bracket, a rotating shaft, a motor and a high-pressure air nozzle;

[0020] The bracket is arranged on one side of the lower die base;

[0021] The rotating shaft is installed in the bracket, and one end of the rotating shaft is connected to the motor;

[0022] The high-pressure gas nozzle is installed on the rotating shaft, and the high-pressure gas nozzle is connected to the air pump through an air pipe.

[0023] (III) Beneficial effects

[0024] The beneficial effects of the utility model are:

[0025] 1. When the high-frequency machine is closing the mold, the upper mold plate moves downward, and the positioning rod enters the corresponding positioning hole and contacts the contact sensor in the positioning hole. This indicates that the upper mold plate and the lower mold base have completed the mold closing. The contact sensor sends a signal to the single-chip microcomputer, and the single-chip microcomputer drives the power switch to turn on. The high-frequency machine is powered on to generate a magnetic field to achieve heat sealing of the material, thereby avoiding the problem of the high-frequency machine being powered on before the upper and lower molds are not in contact, which may cause electric sparks.

[0026] 2. The motor drives the rotating shaft to deflect upward so that the high-pressure air nozzle faces the material contact surface of the upper mold plate. The high-pressure air nozzle cleans the upper mold plate with high-pressure airflow. The motor drives the rotating shaft to deflect downward and uses the high-pressure airflow of the high-pressure air nozzle to clean the lower mold base to avoid the presence of metal chips, dust and other foreign matter on the material contact surface of the upper mold plate and the lower mold base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a high-sensitivity electronic spark protector;

[0028] Figure 2 This is a schematic diagram of the internal structure of a high-sensitivity electronic spark protector.

[0029] Description of reference numerals:

[0030] 1. Put on the template;

[0031] 2. Positioning rod;

[0032] 3. Positioning hole;

[0033] 4. Lower die seat;

[0034] 5. Dust removal mechanism;

[0035] 51. rotating shaft; 52. high pressure air nozzle; 53. motor; 54. bracket;

[0036] 6. Contact sensor. DETAILED DESCRIPTION

[0037] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0038] Please refer to Figure 1 to Figure 2 , the utility model provides a high-sensitivity electronic spark protector, including an upper mold plate, a lower mold base, a positioning rod, a power switch and a contact sensor;

[0039] The upper mold plate is arranged directly above the lower mold base, and the positioning rods are arranged at the four corners of the bottom of the upper mold plate;

[0040] The lower die base is provided with a positioning hole corresponding to the positioning rod;

[0041] The contact sensor is installed in the positioning hole;

[0042] The power switch is used to control the power on and off of the high frequency machine;

[0043] The contact sensor and the power switch are both electrically connected to the single chip microcomputer;

[0044] During use, when the high-frequency machine closes the mold, the upper template moves downward, and the positioning rod enters the corresponding positioning hole and contacts the contact sensor in the positioning hole. This indicates that the upper template and the lower mold base have completed the mold closing. The contact sensor sends a signal to the microcontroller, and the microcontroller drives the power switch to turn on. The high-frequency machine is energized to generate a magnetic field to achieve heat sealing of the material, thereby avoiding the problem of electric sparks caused by the high-frequency machine being energized before the upper and lower molds are in contact.

[0045] In this embodiment, the contact sensor adopts a pressure-type contact sensor, which can measure the pressure generated on the contact sensor when the positioning rod moves downward. Only when the pressure value error between the contact sensors in the four positioning holes is within the threshold range, it means that the contact between the upper mold plate and the lower mold base is smooth, thereby improving the detection accuracy and sensitivity.

[0046] In this embodiment, a warning light is also included, which is electrically connected to the single chip computer. When only part of the contact sensors in the four positioning holes are in contact with the positioning rods, the warning light lights up, and the contact between the template and the lower mold base is uneven on the surface.

[0047] In this embodiment, a dust removal mechanism is also included, and the dust removal mechanism is used to remove dust from the material contact surface of the upper mold plate and the lower mold base. The dust removal mechanism includes a bracket, a rotating shaft, a motor and a high-pressure air nozzle;

[0048] The bracket is arranged on one side of the lower die base;

[0049] The rotating shaft is installed in the bracket, and one end of the rotating shaft is connected to the motor;

[0050] The high-pressure gas nozzle is installed on the rotating shaft, and the high-pressure gas nozzle is connected to the air pump through an air pipe;

[0051] When in use, the motor drives the rotating shaft to deflect upward so that the high-pressure air nozzle faces the material contact surface of the upper mold plate. The high-pressure air nozzle cleans the upper mold plate with high-pressure airflow. The motor drives the rotating shaft to deflect downward and the high-pressure airflow of the high-pressure air nozzle is used to clean the lower mold base to avoid the presence of foreign matter such as metal chips or dust on the material contact surface of the upper mold plate and the lower mold base.

[0052] The working principle of the utility model is as follows:

[0053] When the high-frequency machine is closing the mold, the upper mold plate moves downward, and the positioning rod enters the corresponding positioning hole and contacts the contact sensor in the positioning hole. This indicates that the upper mold plate and the lower mold base have completed the mold closing. The contact sensor sends a signal to the single-chip microcomputer, and the single-chip microcomputer drives the power switch to turn on. The high-frequency machine is powered on to generate a magnetic field to achieve heat sealing of the material, thereby avoiding the problem of the high-frequency machine being powered on before the upper and lower molds are not in contact, which may cause electric sparks.

[0054] The motor drives the rotating shaft to deflect upward so that the high-pressure air nozzle faces the material contact surface of the upper mold plate. The high-pressure air nozzle cleans the upper mold plate with high-pressure airflow. The motor drives the rotating shaft to deflect downward and the high-pressure airflow of the high-pressure air nozzle is used to clean the lower mold base to avoid the presence of foreign matter such as metal chips or dust on the material contact surface of the upper mold plate and the lower mold base.

[0055] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0056] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-sensitivity electronic spark protector, characterized in that: It includes an upper mold plate, a lower mold base, a positioning rod, a power switch and a contact sensor; The upper mold plate is arranged directly above the lower mold base, and the positioning rods are arranged at the four corners of the bottom of the upper mold plate; The lower die base is provided with a positioning hole corresponding to the positioning rod; The contact sensor is installed in the positioning hole; The power switch is used to control the power on and off of the high frequency machine; The contact sensor and the power switch are both electrically connected to the single chip microcomputer.

2. A high-sensitivity electronic spark protector according to claim 1, characterized in that: The contact sensor is a pressure contact sensor.

3. A high-sensitivity electronic spark protector according to claim 1, characterized in that: It also includes a warning light, which is electrically connected to the single chip microcomputer.

4. A high-sensitivity electronic spark protector according to claim 1, characterized in that: It also includes a dust removal mechanism, which is used to remove dust from the material contact surfaces of the upper mold plate and the lower mold base.

5. A high-sensitivity electronic spark protector according to claim 4, characterized in that: The dust removal mechanism includes a bracket, a rotating shaft, a motor and a high-pressure air nozzle; The bracket is arranged on one side of the lower die base; The rotating shaft is installed in the bracket, and one end of the rotating shaft is connected to the motor; The high-pressure gas nozzle is installed on the rotating shaft, and the high-pressure gas nozzle is connected to the air pump through an air pipe.

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