High-frequency induction welding machine

Abstract

The invention relates to the technical field of welding machines, in particular to a high-frequency induction welding machine which comprises a welding device and a high-frequency induction electric cabinet, the welding device comprises a machine frame, a machine frame base and a working table, the machine frame base and the working table are arranged on the machine frame, an electric box is installed on the machine frame base, and a cooling water pump is installed in the electric box in an embedded mode. A welding lower die base is installed on the workbench, a receiving coil used for welding products is arranged on the welding lower die base, a transmitting coil corresponding to the receiving coil is arranged in the welding lower die base, and the head end and the tail end of the transmitting coil penetrate through the welding lower die base from inside to outside and then are communicated with a cooling water pump. The high-frequency induction electric control box is located on one side of the welding device and comprises a box body and an electrical assembly arranged in the box body. The induction inductance coil is simple in structure, reasonable in design, good in stability, long in service life and convenient to overhaul, the induction inductance coil is long in service life, the manufacturing cost is low, the reject ratio of welded products is low, and the welding cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of welding machines, and particularly to a high-frequency induction welding machine. Background Art

[0002] A high-frequency induction welding machine uses a metal coil as a dielectric material and the high-frequency induction heating technology based on the principle of electromagnetic induction to generate induction heating for the metal medium of plastic products, and applies a certain pressure to quickly melt the working interface, and then fills the interface gap, so as to achieve the welding effect. During operation, the staff first places the metal medium at the joint of two plastic parts, then combines the plastic parts and puts them into the lower die seat. When the welding machine works, it drives the upper die seat to move downwards to fix and press the combined plastic parts. At the same time, the coil is energized to heat the metal medium. After the joint of the plastic parts melts and cools, the fixed connection of the two plastic parts can be realized. Finally, the plastic parts are taken out of the mold.

[0003] At present, the high-frequency induction welding machines on the market all have the following problems more or less: 1. The welding device is directly connected to the high-frequency inductance coil. The electromagnetic coil will generate instantaneous high temperature when powered on and off, resulting in a short service life of the electromagnetic coil, frequent replacement is required, resulting in high costs, low welding efficiency of the product, and at the same time, the electromagnetic coil is directly exposed outside, with poor safety; 2. The layout and design of the electric control box of the high-frequency induction welding machine are unreasonable and the service life is short; 3. The transmitting coil is placed below the lower die seat, so the distance between the transmitting coil and the receiving coil is far, the oscillation frequency emitted by the oscillation transmitter is high, and the welding time is long, which will lead to high power consumption of the equipment and invisibly increase the processing cost; 3. The stability of the high-frequency induction welding machine is poor, resulting in inconsistent welding positions during the heating and fusion process of the product and a high defective rate of the product. In view of the above problems, the inventor has improved and modified the structure of the existing high-frequency induction welding machine. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a high-frequency induction welding machine, which solves the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A high-frequency induction welding machine, comprising a welding device and a high-frequency induction electric control box. The welding device includes a frame, a frame base and a workbench provided on the frame. The frame base is located below the workbench. An electric box is installed on the frame base, and a cooling water pump is embedded in the electric box. A welding lower die base is installed on the workbench. A receiving coil for fusing a product is provided on the welding lower die base, and a transmitting coil corresponding to the receiving coil is provided inside the welding lower die base. The head and tail ends of the transmitting coil penetrate through the welding lower die base from the inside to the outside and are connected to the cooling water pump. A fine-tuning pressure template is provided directly above the welding lower die base. The fine-tuning pressure template is connected to a cylinder connecting plate through an M12 connecting screw rod. The cylinder connecting plate is fixedly connected to the output end of the cylinder. The cylinder is fixedly installed on a cylinder platen. The cylinder platen is vertically provided on the workbench. The high-frequency induction electric control box is located on one side of the welding device and includes a box body and electrical components provided inside the box body. The electrical components include an electrical partition board, a power supply, a filament transformer, a high-voltage transformer, an electron vacuum tube, an induction inductance coil, a sliding resistor, a rectifier bridge stack, a high-power capacitor, a blower and a mutual inductance coil. The electrical partition board is provided in the middle inside the box body. The power supply, the filament transformer, the high-voltage transformer, the sliding resistor, the rectifier bridge stack and the blower are provided below the electrical partition board. The electron vacuum tube, the induction inductance coil, the high-power capacitor and the mutual inductance coil are provided on the electrical partition board. The output end of the power supply is respectively connected to the filament transformer and the high-voltage transformer. The output end of the filament transformer is connected to the electron vacuum tube. The output end of the high-voltage transformer is connected to the rectifier bridge stack. The induction inductance coil is sleeved outside the mutual inductance coil and is wound with a hollow copper tube inside. An inlet and an outlet are provided on the induction inductance coil. The inlet and the outlet are respectively connected to the inside of the induction inductance coil. An induction mold lead-out wire is also electrically connected to the induction inductance coil. The induction mold lead-out wire is connected to the transmitting coil through a copper strip. The inlet and the outlet are connected to the cooling water pump.

[0006] Preferably, a control panel for controlling the operation of the welding device is further provided on the frame, and the control panel is electrically connected to the electric box.

[0007] Preferably, guide rods are provided on both sides of the upper end surface of the cylinder connecting plate at the output end of the cylinder. One end of the guide rod away from the cylinder connecting plate is movably connected to the cylinder platen.

[0008] Preferably, the cylinder platen is in an L shape.

[0009] Preferably, the receiving coil is a closed-loop coil made of stainless steel or iron. The outer diameter of the receiving coil is between 0.8 mm and 2 mm, and the receiving coil is coaxially arranged with the transmitting coil. The transmitting coil is an open coil with a hollow interior, and the opening width of the transmitting coil is between 5 mm and 50 mm.

[0010] Preferably, the box body is enclosed by a front baffle, a rear baffle, a left baffle, a right baffle, an upper baffle and a lower baffle to form a cavity structure with a hollow interior. Front cabinet doors and rear cabinet doors are respectively provided on the front baffle and the rear baffle, and heat dissipation fins are arranged on both the front cabinet door and the rear cabinet door. Heat dissipation fans are embedded and installed on the rear baffle and the left baffle, and universal casters are arranged at the four corners of the bottom of the lower baffle.

[0011] Preferably, the heat dissipation fan is electrically connected to the input end of the filament transformer.

[0012] Preferably, the output voltage of the power supply is 380V AC voltage, the voltage output by the filament transformer is 12.6V AC voltage, and the voltage output by the high-voltage transformer is 6KV AC voltage.

[0013] Preferably, a wind tube is connected to the air outlet of the fan. The end of the wind tube away from the fan penetrates through the electrical partition from bottom to top and is connected to the electron vacuum tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The present invention provides a high-frequency induction welding machine, which is composed of a welding device and a high-frequency induction electric control box. The overall structure is simple and reasonable. The high-frequency induction electric control box includes a box body and electrical components arranged in the box body. Setting the electrical components in the box body has better safety. By providing a front cabinet door and a rear cabinet door on the box body, it is convenient to repair the electric control box. By embedding and installing heat dissipation fans on the rear baffle and the left baffle, the heat dissipation fans can dissipate heat from the electrical components inside the box body. The electrical components include an electrical partition, a power supply, a filament transformer, a high-voltage transformer, an electron vacuum tube, an induction coil, a sliding resistor, a rectifier bridge stack, a high-power capacitor, a fan and a mutual inductance coil. Among them, the fan is used to dissipate heat from the electron vacuum tube. By providing a water inlet and a water outlet on the induction coil, and connecting the water inlet and the water outlet to a cooling water pump, heat dissipation of the induction coil is carried out to extend its service life.

[0016] 2. The welding device in the present invention includes a frame, a frame base and a workbench arranged on the frame. The frame base is located below the workbench. An electrical box is installed on the frame base, and a cooling water pump is embedded in the electrical box. The cooling water pump is used to dissipate heat from the transmitting coil and the induced inductance coil. By arranging guide rods on both sides of the upper end surface of the cylinder connecting plate at the output end of the cylinder, the cylinder connecting plate and the fine-tuning pressing template can move along the length direction of the guide rods under the action of the cylinder, ensuring that the pressing positions of the cylinder connecting plate and the fine-tuning pressing template are consistent, with good stability and reducing the defective rate of the product. By arranging the transmitting coil in the welding lower die base, and the transmitting coil is an open coil with a hollow interior, both ends of the transmitting coil are also connected to the cooling water pump. The cooling water pump injects cooling liquid into the transmitting coil. After the high-frequency induction welding machine completes the welding of the plastic product, the cooling water pump injects cooling liquid into the transmitting coil to cool the welding lower die base, effectively extending the service life of the mold. At the same time, the transmitting coil is arranged inside the welding lower die base, with good safety, and the distance from the receiving coil is close, shortening the welding time and reducing the welding cost.

[0017] 3. The fine-tuning pressing template in the present invention is located below the cylinder connecting plate, and the fine-tuning pressing template and the cylinder connecting plate are connected by an M12 connecting screw rod. When welding irregular plastic products, the level of the fine-tuning pressing template can be finely adjusted by manually adjusting the M12 connecting screw rod to meet the usage requirements of different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a structural diagram of the welding device of the present invention;

[0020] Figure 3 is a structural diagram of the transmitting coil of the present invention;

[0021] Figure 4 is a structural diagram of the high-frequency induction electric control box of the present invention;

[0022] Figure 5 is a structural diagram of the box body of the present invention;

[0023] Figure 6 is a distribution state diagram of the electrical components of the present invention;

[0024] Figure 7 is the oscillation circuit schematic diagram of the electrical components of the invention.

[0025] The reference numerals and names in the drawings are as follows:

[0026] 1. Welding device; 11. Frame; 12. Frame base; 13. Workbench; 14. Electric box; 15. Cooling water pump; 16. Lower welding die base; 17. Fine-tuning pressure template; 18. M12 connecting lead screw; 19. Cylinder connecting plate; 110. Cylinder; 111. Cylinder platen; 112. Receiving coil; 113. Transmitting coil; 114. Control panel; 115. Guide rod; 2. High-frequency induction electric control box; 21. Box body; 211. Front baffle; 212. Rear baffle; 213. Left baffle; 214. Right baffle; 215. Upper baffle; 216. Lower baffle; 217. Heat dissipation fins; 218. Front cabinet door; 219. Rear cabinet door; 2110. Heat dissipation fan; 2111. Universal caster; 22. Electrical components; 221. Electrical partition; 222. Power supply; 223. Filament transformer; 224. High-voltage transformer; 225. Electron vacuum tube; 226. Inductive coil; 227. Slide resistor; 228. Rectifier bridge stack; 229. High-power capacitor; 2210. Fan; 2211. Mutual inductance coil; 2212. Water inlet; 2213. Water outlet; 2214. Induced mold lead wire; 2215. Air duct; 3. Copper strip. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] Please refer to Figure 1 , an embodiment provided by the present invention: a high-frequency induction welding machine, which includes a welding device 1 and a high-frequency induction electric control box 2. The overall structure is simple and reasonably designed. Among them, the high-frequency induction electric control box 2 is located on one side of the welding device 1, and the high-frequency induction electric control box 2 is connected to the welding device 1 through a copper strip 3. The following will describe each structure of the high-frequency induction welding machine in detail with reference to the drawings:

[0031] Please refer to Figure 2 and Figure 3 , the welding device 1 in the figure includes a frame 11, a frame base 12 and a workbench 13 arranged on the frame 11. Among them, the frame base 12 is located below the workbench 13. An electric box 14 is installed on the frame base 12, and a cooling water pump 15 is embedded in the electric box 14. A welding lower die base 16 is installed on the workbench 13. A receiving coil 112 for fusing products is arranged on the welding lower die base 16, and a transmitting coil 113 corresponding to the receiving coil 112 is arranged inside the welding lower die base 16. The head and tail ends of the transmitting coil 113 penetrate the welding lower die base 16 from the inside to the outside and are connected to the cooling water pump 15. A fine-tuning pressure template 17 is arranged directly above the welding lower die base 16. The fine-tuning pressure template 17 is connected to a cylinder connecting plate 19 through an M12 connecting lead screw 18. The cylinder connecting plate 19 is fixedly connected to the output end of a cylinder 110. The cylinder 110 is fixedly installed on a cylinder platen 111. The cylinder platen 111 is vertically arranged on the workbench 13. In this embodiment, the cylinder platen 111 is in an L shape. Guide rods 115 are arranged on both sides of the output end of the cylinder 110 on the upper end surface of the cylinder connecting plate 19. The end of the guide rod 115 away from the cylinder connecting plate 19 is movably connected to the cylinder platen 111.

[0032] Specifically, a control panel 114 for controlling the operation of the welding device 1 is further arranged on the frame 11. The control panel 114 is electrically connected to the electric box 14, and the operation of the welding device 1 is controlled through the control panel 114.

[0033] It should be noted that in this embodiment, the receiving coil 112 is a closed-loop coil made of stainless steel or iron. The outer diameter value of the receiving coil 112 is between 0.8 mm and 2 mm, and the receiving coil 112 is coaxially arranged with the transmitting coil 113. The transmitting coil 113 is an open coil with a hollow interior, and the opening width value of the transmitting coil 113 is between 5 mm and 50 mm.

[0034] Please refer to again Figures 1 to 3 , when the high-frequency induction electric control box 2 emits a stable oscillation wave with an oscillation frequency of 450 KHz, the maximum detection distance of the transmitting coil 113 can reach any-shaped coil with a circumference of 1640 mm. The distance between the transmitting coil 113 and the receiving coil 112 can be 60 mm. Within this distance, the receiving coil 112 with a diameter of 0.8 mm - 2 mm can be instantaneously heated to a high temperature of about 200 degrees, which is sufficient to achieve the welding of all thermoplastic plastic materials. The minimum detection distance of the transmitting coil 113 can reach a circular range with a diameter of 25 mm, and the receiving coil 112 can be instantaneously heated within a range of 20 mm around it. The welding of thermoplastic plastic materials is achieved through the receiving coil 112.

[0035] Please refer to Figures 4 to 6 , the high-frequency induction electric control box 2 in the figure includes a box body 21 and electrical components 22 arranged in the box body 21. The electrical components 22 include an electrical partition 221, a power supply 222, a filament transformer 223, a high-voltage transformer 224, an electron vacuum tube 225, an induction inductance coil 226, a sliding resistor 227, a rectifier bridge stack 228, a high-power capacitor 229, a blower 2210, and a mutual inductance coil 2211. Among them, the electrical partition 221 is arranged in the middle of the interior of the box body 21. The power supply 222, the filament transformer 223, the high-voltage transformer 224, the sliding resistor 227, the rectifier bridge stack 228, and the blower 2210 are arranged below the electrical partition 221. The electron vacuum tube 225, the induction inductance coil 226, the high-power capacitor 229, and the mutual inductance coil 2211 are arranged on the electrical partition 221. The output end of the power supply 222 is respectively connected to the filament transformer 223 and the high-voltage transformer 224. The output end of the filament transformer 223 is connected to the electron vacuum tube 225. The output end of the high-voltage transformer 224 is connected to the rectifier bridge stack 228. The induction inductance coil 226 is sleeved outside the mutual inductance coil 2211, and the induction inductance coil 226 is wound with a hollow copper tube. An inlet 2212 and an outlet 2213 are arranged on the induction inductance coil 226. The inlet 2212 and the outlet 2213 are respectively communicated with the inside of the induction inductance coil 226. An induction mold lead wire 2214 is also electrically connected to the induction inductance coil 226. The induction mold lead wire 2214 is connected to the transmitting coil 113 through a copper strip 3. The inlet 2212 and the outlet 2213 are connected to the cooling water pump 15.

[0036] Specifically, the box body 21 is enclosed by a front baffle 211, a rear baffle 212, a left baffle 213, a right baffle 214, an upper baffle 215 and a lower baffle 216 to form a cavity structure with a hollow interior. Front cabinet doors 218 and rear cabinet doors 219 are respectively provided on the front baffle 211 and the rear baffle 212. Heat dissipation fins 217 are provided on both the front cabinet door 218 and the rear cabinet door 219. Heat dissipation fans 2110 are embedded and installed on the rear baffle 212 and the left baffle 213. Universal casters 2111 are provided at the four corners of the bottom of the lower baffle 216. The heat dissipation fans 2110 are electrically connected to the input end of the filament transformer 223.

[0037] Specifically, an air duct 2215 is connected to the air outlet of the air blower 2210. The end of the air duct 2215 far from the air blower 2210 penetrates through the electrical partition 221 from bottom to top and is connected to the electron vacuum tube 225.

[0038] It should be noted that, in this embodiment, the output voltage of the power supply 222 is 380V AC voltage, the output voltage of the filament transformer 223 is 12.6V AC voltage, and the output voltage of the high-voltage transformer 224 is 6KV AC voltage.

[0039] Please refer to Figure 7 , Figure 7 which is the schematic diagram of the oscillation circuit of the electrical components of the present invention. The oscillation circuit in the figure includes a power supply AC, transformers T1 and T2, diodes D1 - D6, resistors R1, R2, R3, R4, inductors L1 - L5, normally open contacts KM1 - KM3 of AC contactors, capacitors C4 - C10, an electron vacuum tube G and an induced inductance coil L6. The output end of the power supply AC is respectively connected to the transformers T1 and T2. The normally open contacts KM1 - KM3 of the AC contactors are arranged between the transformer T1 and the power supply AC. The diodes D1 - D6 form a rectifier bridge. The input end of the rectifier bridge is connected to the output end of the transformer T1. The negative pole of the output direct current is connected to the resistor R1. One ends of the capacitor C4 and the inductor L1 are connected to the positive pole of the direct current output by the rectifier bridge, and the other ends are respectively connected to the ground wire and the resistor R2. The inductor L2 is connected in parallel at both ends of the resistor R2. The end of the resistor R2 far from the inductor L1 is connected to the screen grid of the electron vacuum tube G. The output end of the transformer T2 is respectively connected to the capacitor C5 and the filament of the electron vacuum tube G. The inductor L3 is connected in parallel at both ends of the resistor R3 and is connected to the grid of the electron vacuum tube G. One end of the inductor L4 is connected to the resistor R4, and the other end is connected to the resistor R3. One end of the capacitor C7 is connected to the inductor L5, and the other end is connected to the inductor L3, the inductor L4 and the resistor R3. The capacitors C8 - C10 are connected in parallel, and one ends of the capacitors C8 - C10 are grounded, and the other ends are respectively connected to the induced inductance L6 and the capacitor C6.

[0040] It should be noted that the power supply AC in this embodiment is the above-mentioned power supply 222, the transformer T2 is the filament transformer 223, the transformer T1 is the high-voltage transformer 224, the electron vacuum tube G is the electron vacuum tube 225, the induced inductance coil L5 is the induced inductance coil 226, the inductance L5 is the mutual inductance coil 2211, the resistor R1 is the sliding resistor 227, the diodes D1-D6 form the rectifier bridge stack 228, and the capacitors C8-C10 are high-power capacitors 229.

[0041] Please refer to again Figures 1 to 7 , when the high-frequency induction welding machine in the present invention is working, first place the two plastic products to be welded on the welding lower die base 16, and place the receiving coil 112 made of stainless steel or iron between the two plastic products to be welded. At this time, operate the control panel 114, and the air cylinder 110 drives the air cylinder connecting plate 19 and the fine-tuning pressing plate 17 to move downward until the fine-tuning pressing plate 17 contacts the plastic product to be welded. At the same time, the induced inductance coil 226 emits high-frequency electromagnetic waves, and these electromagnetic waves are transmitted to the receiving coil 112 through the transmitting coil 113. The receiving coil 112 can instantly generate a high temperature of 200 °C, and melt-weld the plastic products to be welded. After welding, the induced inductance coil 226 stops working. At the same time, the cooling water pump 15 injects cooling liquid into the transmitting coil 113 and the induced inductance coil 226 to quickly cool the transmitting coil 113 and the induced inductance coil 226. Finally, the air cylinder 110 resets, and the operator takes out the welded product manually. The whole operation is simple and convenient, and the welding effect is good.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A high-frequency induction welding machine, characterized in that: It includes a welding device (1) and a high-frequency induction electric control box (2). The welding device (1) includes a frame (11), a frame base (12) and a workbench (13) arranged on the frame (11). Among them, the frame base (12) is located below the workbench (13). An electric box (14) is installed on the frame base (12), and a cooling water pump (15) is embedded in the electric box (14). A welding lower die base (16) is installed on the workbench (13). A receiving coil (112) for fusing products is arranged on the welding lower die base (16), and a transmitting coil (113) corresponding to the receiving coil (112) is arranged inside the welding lower die base (16). The head and tail ends of the transmitting coil (113) penetrate through the welding lower die base (16) from the inside to the outside and are connected to the cooling water pump (15). A fine-tuning pressure template (17) is arranged directly above the welding lower die base (16). The fine-tuning pressure template (17) is connected to a cylinder connecting plate (19) through an M12 connecting lead screw (18). The cylinder connecting plate (19) is fixedly connected to the output end of a cylinder (110). The cylinder (110) is fixedly installed on a cylinder platen (111). The cylinder platen (111) is vertically arranged on the workbench (13). The high-frequency induction electric control box (2) is located on one side of the welding device (1). It includes a box body (21) and electrical components (22) arranged in the box body (21). The electrical components (22) include an electrical partition plate (221), a power supply (222), a filament transformer (223), a high-voltage transformer (224), an electron vacuum tube (225), an induction inductance coil (226), a sliding resistor (227), a rectifier bridge stack (228), a high-power capacitor (229), a fan (2210) and a mutual inductance coil (2211). Among them, the electrical partition plate (221) is arranged in the middle inside the box body (21). The power supply (222), the filament transformer (223), the high-voltage transformer (224), the sliding resistor (227), the rectifier bridge stack (228) and the fan (2210) are arranged below the electrical partition plate (221). The electron vacuum tube (225), the induction inductance coil (226), the high-power capacitor (229) and the mutual inductance coil (2211) are arranged on the electrical partition plate (221). The output end of the power supply (222) is respectively connected to the filament transformer (223) and the high-voltage transformer (224). The output end of the filament transformer (223) is connected to the electron vacuum tube (225). The output end of the high-voltage transformer (224) is connected to the rectifier bridge stack (228). The induction inductance coil (226) is sleeved outside the mutual inductance coil (2211), and the induction inductance coil (226) is wound with a hollow copper tube inside. An inlet (2212) and an outlet (2213) are arranged on the induction inductance coil (226). The inlet (2212) and the outlet (2213) are respectively connected to the inside of the induction inductance coil (226).An induction mold lead wire (2214) is also electrically connected to the induced inductance coil (226). The induction mold lead wire (2214) is connected to the transmitting coil (113) through a copper strip (3). The water inlet (2212) and the water outlet (2213) are connected to a cooling water pump (15).

2. The high-frequency induction welding machine according to claim 1, characterized in that: A control panel (114) for controlling the operation of the welding device (1) is further provided on the frame (11), and the control panel (114) is electrically connected to the electrical box (14).

3. A high-frequency induction welding machine according to claim 1, characterized in that: Guide rods (115) are provided on both sides of the output end of the cylinder (110) on the upper end surface of the cylinder connecting plate (19), and one end of the guide rod (115) far from the cylinder connecting plate (19) is movably connected to the cylinder platen (111).

4. A high-frequency induction welding machine according to claim 1, characterized in that: The cylinder platen (111) is in an L shape.

5. A high-frequency induction welding machine according to claim 1, characterized in that: The receiving coil (112) is a closed-loop coil made of stainless steel or iron. The outer diameter value of the receiving coil (112) is between 0.8 mm and 2 mm, and the receiving coil (112) is coaxially arranged with the transmitting coil (113). The transmitting coil (113) is an open coil with a hollow interior, and the opening width value of the transmitting coil (113) is between 5 mm and 50 mm.

6. A high-frequency induction welding machine according to claim 1, characterized in that: The box body (21) is enclosed by a front baffle (211), a rear baffle (212), a left baffle (213), a right baffle (214), an upper baffle (215) and a lower baffle (216) to form a cavity structure with a hollow interior. Front cabinet doors (218) and rear cabinet doors (219) are respectively provided on the front baffle (211) and the rear baffle (212). Heat dissipation fins (217) are provided on both the front cabinet door (218) and the rear cabinet door (219). Heat dissipation fans (2110) are embedded and installed on the rear baffle (212) and the left baffle (213). Universal casters (2111) are provided at the four corners of the bottom of the lower baffle (216).

7. A high-frequency induction welding machine according to claim 6, characterized in that: The heat dissipation fan (2110) is electrically connected to the input end of the filament transformer (223).

8. A high-frequency induction welding machine according to claim 1, characterized in that: The output voltage of the power supply (222) is 380V AC voltage, the output voltage of the filament transformer (223) is 12.6V AC voltage, and the output voltage of the high-voltage transformer (224) is 6KV AC voltage.

9. The high-frequency induction welding machine according to claim 1, wherein: An air duct (2215) is connected to the air outlet of the blower (2210). One end of the air duct (2215) far from the blower (2210) penetrates through the electrical partition (221) from bottom to top and is connected to the electron vacuum tube (225).

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