High-frequency heating device for pipe expansion

Abstract

The utility model discloses a high-frequency heating device for pipe expansion, which belongs to the technical field of industrial processing and comprises a base, a hydraulic rod A is mounted on one side of the upper portion of the base, an expansion head is mounted at the end of the hydraulic rod A through an extension rod, and a guide sleeve is mounted at the position, close to the hydraulic rod A, of the upper portion of the base. An extension rod at the end of the hydraulic rod A is slidably connected with the guide sleeve, a water tank and a high-frequency heater power source are installed above the base through a support, a water pump is installed in the water tank, a coil is arranged below the high-frequency heater power source in a matched mode, and a plug is arranged above the coil in a matched mode. And a quick dismounting mechanism is arranged at the joint of the coil and the high-frequency heater power supply. When the limiting push rod moves downwards, the teeth on the limiting push rod and the clamping teeth are squeezed and meshed in a one-way mode, the limiting push rod is prevented from returning, and convenience and stability of coil installation are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial processing, and particularly relates to a high-frequency heating device for tube expanding. Background Technique

[0002] Tube expanding is part of tube jointing. Generally, it is a metal tube or a plastic tube. When connecting two pipes, due to the insufficient tightness of the connection between the ports, it is necessary to have a certain depth between the two ports to improve the sealing performance. However, the diameters of the two ports are the same. In order to connect the two ports, tube expanding operation is required. Tube expanding is to insert an expansion head into the tube end, and then apply radial pressure to the inner wall of the tube end through pressure to gradually expand the tube diameter and cause deformation.

[0003] During tube expanding, it is divided into cold expansion and hot expansion. Cold expansion is to directly insert the expansion head into the tube end, while hot expansion is to heat the tube end to soften the metal and then insert the expansion head into the tube end to prevent the pipe from being cracked.

[0004] Existing equipment for heating pipes generally uses high-frequency heaters. The high-frequency heater can quickly heat the metal tube using the principle of electromagnetic induction heating. Compared with other heating methods, the heating speed is faster. When the existing equipment is in use, due to the different diameters of the pipe fittings, different heating coils need to be replaced. However, the plug of the existing heating coil is welded to the conductive block of the high-frequency heater, which is inconvenient for replacing the coil. Therefore, improvements are made on the existing basis. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-frequency heating device for tube expanding to solve the above problems.

[0006] The technical scheme adopted by the utility model is as follows: A high-frequency heating device for tube expanding includes a base. One side above the base is installed with a hydraulic rod A. The end of the hydraulic rod A is installed with an expansion head through an extension rod. A guide sleeve is installed above the base near the hydraulic rod A. The extension rod at the end of the hydraulic rod A is slidably connected with the guide sleeve. A water tank and a high-frequency heater power supply are installed above the base through a bracket. A water pump is installed inside the water tank. A coil is arranged below the high-frequency heater power supply, and a plug is arranged above the coil. A quick disassembly mechanism is arranged at the connection between the coil and the high-frequency heater power supply;

[0007] The quick disassembly mechanism includes: a slot, a conductive block, a limit slot, a slider, a ceramic insulator, a longitudinal slot, a limit push rod, and a tooth;

[0008] There is a slot provided below the power supply of the high-frequency heater. On one side inside the slot, there is a conductive block. On the other side inside the slot, there is a limit slot. Inside the limit slot, there is a slider connected by sliding. On the other side of the slider, there is a ceramic insulator in close fit. On the side of the plug facing the limit slot, there is an anti-disengagement groove, and the ceramic insulator fits with the anti-disengagement groove. At the top of the limit slot, there is a longitudinal chute. Inside the longitudinal chute, there is a limit push rod connected by sliding. In the middle of the longitudinal chute, there is a gear tooth connected by sliding with a spring.

[0009] Above the base and below the water tank, a limit frame is installed through a bracket. Inside the limit frame, there is a quenching mechanism that can enhance the strength of the pipe fittings.

[0010] The quenching mechanism includes: a spray head, an annular sliding frame, a hydraulic rod B, and a hydraulic rod C. The spray heads are symmetrically installed at the ends of the limit frame. Inside the limit frame, there is an annular sliding frame connected by sliding. Inside the annular sliding frame, the hydraulic rod Bs are symmetrically installed. At the tail of the annular sliding frame, there is a hydraulic rod C.

[0011] Further, the limit push rod is provided with teeth, which are arranged in a one-way engagement with the gear teeth. And on the front of the gear teeth and the limit push rod, there is a handle, and the handle extends out of the housing of the high-frequency heater power supply.

[0012] Further, the number of the hydraulic rod Bs is several, and they are grouped in threes.

[0013] Further, both sides of the slider are connected to the limit slot by tension springs, and the slider is triangularly arranged. There are grooves on the inclined surface. There is a pulley at the bottom of the limit push rod, and the pulley fits with the grooves.

[0014] Further, the tail of the hydraulic rod C is connected to the base through a bracket.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, by pushing down the limit push rod through the handle, the gear at the end of the limit push rod presses the inclined surface of the slider, so that the slider moves outwards. At this time, the ceramic insulator restricts the anti-disengagement groove of the limit slot, preventing the plug from coming off. The plug is connected to the conductive block. At the same time, during the downward movement of the limit push rod, the teeth on the limit push rod are squeezed with the gear teeth for one-way engagement, preventing the limit push rod from returning to its original position, improving the convenience and stability of coil installation.

[0017] 2. In the present utility model, the hydraulic rod A returns to its original position, and the hydraulic rod B retracts, so that the expanded tube part is located at the spray head. At this time, the water pump pumps water and sprays it from the spray head to cool and quench the expanded tube part, enhancing the strength of the expanded tube part, increasing the mechanical properties after tube expansion, and the whole operation is integrated after the tube expansion operation, making it more convenient to use and more efficient. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the internal sectional structure of the present utility model;

[0019] Figure 2 In the present utility model Figure 1 is a schematic enlarged structure diagram at position A;

[0020] Figure 3 In the present utility model Figure 2 is a schematic enlarged structure diagram at position B;

[0021] Figure 4 is a schematic diagram of the partial three-dimensional structure of the present utility model.

[0022] Markings in the figure: 1, base; 101, guide sleeve; 2, hydraulic rod A; 201, expansion head; 3, high-frequency heater power supply; 301, slot; 302, conductive block; 303, limiting groove; 3031, slider; 3032, ceramic insulator; 304, longitudinal sliding groove; 3041, limiting push rod; 305, locking tooth; 4, water tank; 401, water pump; 5, coil; 501, plug; 6, limiting frame; 601, spray head; 7, annular sliding frame; 701, hydraulic rod B; 702, hydraulic rod C. Detailed Description of the Preferred Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the present utility model:

[0025] Referring to Figures 1-4 : A high-frequency heating device for tube expansion, including a base 1, a hydraulic rod A 2 is installed on one side above the base 1, an expansion head 201 is installed at the end of the hydraulic rod A 2 through an extension rod, a guide sleeve 101 is installed near the hydraulic rod A 2 above the base 1, a water tank 4 and a high-frequency heater power supply 3 are installed above the base 1 through a bracket, a water pump 401 is installed inside the water tank 4, a coil 5 is arranged below the high-frequency heater power supply 3, a plug 501 is arranged above the coil 5, and a quick-disassembly mechanism is arranged at the connection between the coil 5 and the high-frequency heater power supply 3;

[0026] The quick disassembly mechanism includes: a slot 301, a conductive block 302, a limiting groove 303, a slider 3031, a ceramic insulator 3032, a longitudinal chute 304, a limiting push rod 3041, and a locking tooth 305;

[0027] Below the power supply 3 of the high-frequency heater, a slot 301 is provided. On one side inside the slot 301, a conductive block 302 is provided. On the other side inside the slot 301, there is a limiting groove 303. Inside the limiting groove 303, a slider 3031 is connected by sliding. On the other side of the slider 3031, a ceramic insulator 3032 is closely attached. At the top of the limiting groove 303, a longitudinal chute 304 extends. Inside the longitudinal chute 304, a limiting push rod 3041 is connected by sliding. In the middle of the longitudinal chute 304, a locking tooth 305 is connected by a spring. During the downward movement of the limiting push rod 3041, the teeth on the limiting push rod 3041 are pressed against the locking tooth 305 for one-way engagement to prevent the limiting push rod 3041 from returning, improving the convenience and stability of the installation of the coil 5;

[0028] Above the base 1 and below the water tank 4, a limiting frame 6 is installed through a bracket. Inside the limiting frame 6, a quenching mechanism is provided that can enhance the strength of the pipe fitting;

[0029] The quenching mechanism includes: a nozzle 601, an annular sliding frame 7, a hydraulic rod B 701, and a hydraulic rod C 702. Nozzles 601 are symmetrically installed at the ends of the limiting frame 6. At this time, the water pump 401 pumps water and sprays it out from the nozzles 601 to cool and quench the expanded pipe section, enhancing the strength of the expanded pipe section, increasing the mechanical properties after expansion. Moreover, the entire operation is integrated after the expansion operation, making it more convenient to use and more efficient. An annular sliding frame 7 is connected by sliding inside the limiting frame 6. Hydraulic rods B 701 are symmetrically installed inside the annular sliding frame 7. A hydraulic rod C 702 is installed at the tail of the annular sliding frame 7. The tail of the hydraulic rod C 702 is connected to the base 1 through a bracket.

[0030] Preferably, the extension rod at the end of the hydraulic rod A 2 is connected by sliding with the guide sleeve 101. At this time, the hydraulic rod A 2 cooperates with the guide of the lengthening rod to make the expanding head 201 enter the heated pipe fitting for expanding the pipe fitting. The guide sleeve 101 can improve the stability of the movement of the expanding head 201.

[0031] Preferably, the plug 501 is provided with an anti-disengagement groove on the side facing the limiting groove 303, and the ceramic insulator 3032 fits with the anti-disengagement groove. The ceramic insulator 3032 restricts the anti-disengagement groove of the limiting groove 303 to prevent the plug 501 from coming out, and the ceramic insulator 3032 can isolate the current.

[0032] Preferably, the limit push rod 3041 is provided with teeth and is arranged in a one-way engagement with the locking teeth 305. Handles are installed on the front surfaces of the locking teeth 305 and the limit push rod 3041, and the handles extend out of the housing of the high-frequency heater power supply 3. By pulling the locking teeth 305 with the handles, the teeth on the limit push rod 3041 are no longer stressed by the locking teeth 305 at this time, and the tension spring drives the slider 3031 to return to its position. The anti-disengagement groove of the ceramic insulator 3032 no longer restricts the anti-disengagement groove of the limit groove 303. The plug 501 is inserted into the slot 301. By pushing the limit push rod 3041 downward with the handle, the gear at the end of the limit push rod 3041 presses the inclined surface of the slider 3031, so that the slider 3031 moves outward. At this time, the anti-disengagement groove of the ceramic insulator 3032 restricts the anti-disengagement groove of the limit groove 303 to prevent the plug 501 from coming out.

[0033] Preferably, the number of hydraulic rods B701 is several, with three in a group. The hydraulic rods B701 in the annular carriage 7 extend out to clamp the pipe fittings, ensuring the centering of the pipe fittings.

[0034] Preferably, both sides of the slider 3031 are connected to the limit groove 303 through a tension spring, and the slider 3031 is triangularly arranged with grooves on the inclined surface. There is a pulley at the bottom of the limit push rod 3041, and the pulley fits with the grooves. By pushing the limit push rod 3041 downward with the handle, the gear at the end of the limit push rod 3041 presses the inclined surface of the slider 3031, so that the slider 3031 moves outward. At this time, the anti-disengagement groove of the ceramic insulator 3032 restricts the anti-disengagement groove of the limit groove 303 to prevent the plug 501 from coming out, and the pulley reduces the friction force.

[0035] Preferably, the hydraulic rod A2, the hydraulic rod B701, and the hydraulic rod C702 are all connected to the hydraulic control station through pipelines. The water outlet of the water pump 401 is connected to the nozzle 601 through a pipeline, and the high-frequency heater power supply 3, the water pump 401, and the external power supply are electrically connected.

[0036] Working principle: First, insert the pipe fitting into the annular carriage 7. By controlling the hydraulic rod B701 in the annular carriage 7 to extend, the pipe fitting is clamped. Since the number of hydraulic rods B701 is several and they are grouped in threes, the centering of the pipe fitting is ensured. Then, control the hydraulic rod C702 to extend, so that the annular carriage 7 slides out of the limit frame 6. At this time, the end of the pipe fitting to be expanded enters the coil 5. At this time, the high-frequency heater power supply 3 inputs current to the coil 5. Using the electromagnetic induction phenomenon, eddy currents are generated in the pipe fitting, and then it heats up quickly. When the color of the pipe fitting turns red, turn off the high-frequency heater power supply 3. At this time, the hydraulic rod A2 cooperates with the guidance of the extension rod to make the expansion head 201 enter the heated pipe fitting for pipe expansion operation. Then, the hydraulic rod A2 returns, and the hydraulic rod B701 retracts, so that the expanded part is located at the nozzle 601. At this time, the water pump 401 pumps water and sprays it from the nozzle 601 to cool and quench the expanded part, enhancing the strength of the expanded part, increasing the mechanical properties after pipe expansion, and the whole operation is integrated after the pipe expansion operation, which is more convenient and efficient to use. Finally, since the diameters of the pipe fittings are different, when different specifications of coils 5 need to be replaced, the handle can be pulled to drive the locking tooth 305. At this time, the locking tooth 305 no longer exerts force on the teeth of the limit push rod 3041, and the tension spring drives the slider 3031 to return to its position. The ceramic insulator 3032 no longer restricts the anti-disengagement groove of the limit groove 303. At the same time, the inclined surface of the slider 3031 pushes the limit push rod 3041 upward. At this time, the plug 501 can be removed from the slot 301. When replacing with a new coil 5, insert the plug 501 into the slot 301, and push the limit push rod 3041 downward through the handle, so that the gear at the end of the limit push rod 3041 presses the inclined surface of the slider 3031, and then the slider 3031 moves outward. At this time, the ceramic insulator 3032 restricts the anti-disengagement groove of the limit groove 303 to prevent the plug 501 from coming out. The plug 501 is connected to the conductive block 302. At the same time, during the downward movement of the limit push rod 3041, the teeth on the limit push rod 3041 are squeezed with the locking tooth 305 for one-way engagement to prevent the limit push rod 3041 from returning to its position, improving the convenience and stability of the installation of the coil 5.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-frequency heating device for expanding a tube, comprising a base (1), a hydraulic rod A (2) being installed on one side above the base (1), an expansion head (201) being installed at the end of the hydraulic rod A (2) via an extension rod, and a guide sleeve (101) being installed above the base (1) near the hydraulic rod A (2), characterized in that: A water tank (4) and a high-frequency heater power supply (3) are mounted above the base (1) via a bracket, a water pump (401) is mounted inside the water tank (4), a coil (5) is matched with the bottom of the high-frequency heater power supply (3), a plug (501) is matched with the top of the coil (5), and a quick disassembly mechanism is provided at the connection between the coil (5) and the high-frequency heater power supply (3); The quick disassembly mechanism comprises: a slot (301), a conductive block (302), a limiting slot (303), a slider (3031), a ceramic insulator (3032), a longitudinal slide groove (304), a limiting push rod (3041), and a latching tooth (305); A slot (301) is provided below the high-frequency heater power supply (3), a conductive block (302) is provided on one side of the slot (301), a limiting slot (303) is provided on the other side of the slot (301), a slider (3031) is slidably connected to the inside of the limiting slot (303), a ceramic insulator (3032) is tightly fitted to the other side of the slider (3031), a longitudinal slot (304) extends from the top of the limiting slot (303), a limiting push rod (3041) is slidably connected to the inside of the longitudinal slot (304), and a latch (305) is slidably connected to the middle of the longitudinal slot (304) via a spring; A limit frame (6) is installed above the base (1) and below the water tank (4) through a bracket, and a quenching mechanism capable of enhancing the strength of the pipe fitting is arranged inside the limit frame (6); The quenching mechanism comprises: a nozzle (601), an annular slide (7), a hydraulic rod B (701), and a hydraulic rod C (702); the nozzle (601) is symmetrically mounted at the end of the limiting frame (6); the annular slide (7) is slidably connected inside the limiting frame (6); the hydraulic rod B (701) is symmetrically mounted inside the annular slide (7); and the hydraulic rod C (702) is mounted at the tail of the annular slide (7).

2. A high frequency heating device for tube expansion as claimed in claim 1, characterized in that: The extension rod at the end of the hydraulic rod A (2) is slidably connected to the guide sleeve (101).

3. A high frequency heating device for tube expansion as claimed in claim 1, characterized in that: The plug (501) is provided with an anti-slip groove at one side of the opening facing the limiting groove (303), and the ceramic insulator (3032) fits in the anti-slip groove.

4. A high frequency heating device for tube expansion as claimed in claim 1, characterized in that: The limit push rod (3041) is provided with teeth, which are unidirectionally engaged with the latch teeth (305), and a handle is installed on the front of the latch teeth (305) and the limit push rod (3041), and the handle extends out of the housing of the high-frequency heater power supply (3).

5. A high frequency heating device for tube expansion as claimed in claim 1, characterized in that: The hydraulic rods B (701) are in multiple numbers, arranged in groups of three.

6. A high frequency heating device for tube expansion as claimed in claim 1, characterized in that: The two sides of the slider (3031) are connected to the limiting groove (303) through tension springs, and the slider (3031) is triangular in shape, with a groove on the inclined surface, and a pulley is provided at the bottom of the limiting push rod (3041), and the pulley fits in the groove.

7. A high frequency heating device for tube expansion as claimed in claim 1, characterized in that: The tail of the hydraulic rod C (702) is connected to the base (1) via a bracket.

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