Expansion equipment for medium-thick-wall heat shrink tube

Abstract

The invention relates to the technical field of heat shrink tube processing, and discloses expansion equipment for a medium-thick-wall heat shrink tube, which comprises a heating expansion process device, one end of the heating expansion process device is fixedly connected with a power supply device, and the bottom of the power supply device is in pipeline connection with a filtering plug flushing device. By arranging the heating expansion process device, current is converted into high-frequency alternating current, when the current flows through a solenoid coil, a high-frequency alternating electric field can be generated, magnetic lines of the high-frequency alternating electric field can penetrate through the heating device, and iron atoms in the heating device are subjected to the action of the alternating magnetic field, so that the heat shrink tube is produced. Eddy current is a high-frequency current and is converted into heat energy under the resistance of a heating device material, so that the heat shrink tube is never heated, the inside and outside of the heat shrink tube are heated uniformly, and the problem that the local ductility of the heat shrink tube is insufficient due to uneven heating is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heat shrink tube processing, and more specifically to an expansion device for medium-thick wall heat shrink tubes. Background Art

[0002] Heat shrink tubing is a special polyolefin tube with shape memory function. After the temperature reaches the shrinking temperature, the size is significantly reduced to the state before expansion. The expansion equipment of heat shrink tubing is a mechanical equipment specially used for expansion operation in the production process of heat shrink tubing. These equipment usually combine multiple functional steps such as heating, expansion and cooling to ensure that the heat shrink tubing has the required size and shape after molding. The working principle of the heat shrink tubing expander is to first extrude the heat shrink tubing material into a tube through an extruder, and then irradiate it with an electron accelerator to give it a shape memory effect. The irradiated tube is then sent to the heating area for heating to soften it and have a certain ductility. The expander and mold are used to make it reach the required size and shape, and then it is cooled and formed. The existing heat shrink tube expander performs heating, expansion and cooling in zones, and both heating and cooling diffuse from the outer wall to the inner wall of the tube. Due to the low thermal conductivity of the heat shrink tube, the heating and cooling efficiency is very low, which is particularly serious for medium and thick wall heat shrink tubes. When the inner wall temperature reaches the expansion temperature during heating, the outer wall temperature is too high, and the material may decompose, resulting in a decrease in product performance. When cooling, the outer wall has cooled to room temperature, but the inner wall temperature is still high, resulting in partial shrinkage of the tube and inability to fully shape it. The cooling time needs to be extended, resulting in low production efficiency. In addition, when expanding, heat shrink tubes of different sizes require expansion molds of different specifications, and a large number of molds need to be purchased and managed. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an expansion device for medium-thick wall heat shrinkable tubes to solve the problems existing in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an expansion device for medium and thick wall heat shrinkable tubes, comprising a heating expansion process device, one end of which is fixedly connected to a power supply device, the bottom pipeline of which is connected to a filter plugging device, and one side of which is welded to a heat shrinkable tube output device.

[0005] Furthermore, the heating expansion process device includes a rotating spinal shaft, fifteen expansion elements are welded to the side of the rotating spinal shaft, an impeller ring is welded to one end of the side of the rotating spinal shaft, three cooling fan blades are welded to the side of the impeller ring, an inlet guide round head is welded to one end of the rotating spinal shaft, a motorized long shaft is welded to the other end of the rotating spinal shaft, one end of the motorized long shaft is fixedly connected to a power supply device, the side of the motorized long shaft is rotatably connected to an air diversion cavity, one side of the air diversion cavity is welded to a hollow shell tube, an alternating spiral coil is provided inside the hollow shell tube, eighteen external heating strips are welded to the inner wall of the hollow shell tube, and one end of the alternating spiral coil is electrically connected to an external wire.

[0006] Furthermore, the expansion element comprises an expansion heating block, a telescopic negative pressure tube is welded on the bottom of the expansion heating block, and an inner plug rod is sleeved on the bottom of the telescopic negative pressure tube.

[0007] Furthermore, the power supply device includes an electric motor, a rotating shaft on one side of the electric motor is connected to a motor rotating shaft, one end of the motor rotating shaft is connected to a motor long shaft, the other side of the electric motor is electrically connected to a temperature connection device, one side of the temperature connection device is electrically connected to a power source battery, the bottom of the temperature connection device is sleeved with a hot air duct, the bottom of the power source battery is electrically connected to two initial wires, one end of the two initial wires is electrically connected to an AC converter, one side of the AC converter is electrically connected to a high-frequency voltage device, the top of the high-frequency voltage device is electrically connected to two long conductive wires, one end of the long conductive wire is electrically connected to a buffer junction, one side of the buffer junction is electrically connected to a direct-connected wire, and one end of the direct-connected wire is electrically connected to an external wire.

[0008] Furthermore, the temperature connection device includes a liquid mercury ball, the top pipe of the liquid mercury ball is connected to a filling tube, a sealing top is welded to the top of the filling tube, one side of the filling tube is electrically connected to a machine conductive strip, the other side of the filling tube is electrically connected to a bus block, and one side of the bus block is electrically connected to two battery connecting strips.

[0009] Furthermore, the filter plugging device includes a long air intake tube, a side pipe of the long air intake tube is connected to an air guide chamber, the other side pipe of the long air intake tube is connected to a steering elbow, the bottom pipe of the steering elbow is connected to a box connecting pipe, the bottom pipe of the box connecting pipe is connected to a filter pressure storage box, one side of the filter pressure storage box is threadedly connected to an air outlet pipe, one end of the air outlet pipe is fixedly connected to an extrusion plug, a plugging spring is welded to one side of the extrusion plug, and one end of the plugging spring is threadedly connected to an air push elbow.

[0010] Furthermore, the heat shrink tube output device includes a output ring plug, push rods are welded at both ends of the back side of the output ring plug, fixing strips are welded on the sides of the two push rods, a through-axis hole is provided on the front side of the fixing strip, a return spring is welded on the back side of the through-axis hole, a motor is welded at one end of the return spring, positioning rods are welded on both sides of the motor, welding strips are welded at one end of the two positioning rods, a turning and pushing device is welded at one end of two turning and pushing devices, retaining arms are welded at both ends of the bottom of the turning and pushing devices, and fixed side blocks are welded at one end of the two retaining arms.

[0011] Furthermore, the pushing device includes an upper horizontal column, the side of the upper horizontal column is rotatably sleeved with a last rotating barrel, three pushing pins are welded to both ends of the side of the last rotating barrel, the middle of the last rotating barrel is fixedly connected with two linkage chains, the bottom of the two linkage chains is fixedly connected with a starting rotating cylinder, the inside of the starting rotating cylinder is rotatably sleeved with a lower horizontal column, threaded blocks are welded to both ends of the lower horizontal column, and three air-facing rotating plates are welded to the middle of the side of the starting rotating cylinder.

[0012] Technical effects and advantages of the present invention: 1. The present invention is provided with a heating expansion process device to convert the current into high-frequency alternating current. When the current flows through the spiral coil, a high-frequency alternating electric field is generated. The magnetic lines of force of the high-frequency alternating electric field pass through the heating device. The iron atoms in the heating device are affected by the alternating magnetic field to generate an eddy current effect. The eddy current is a high-frequency current that is converted into heat energy under the resistance of the heating device material to heat the heat shrinkable tube, which is beneficial to uniform heating of the inside and outside of the heat shrinkable tube, and avoids the problem of insufficient local ductility of the heat shrinkable tube due to uneven heating.

[0013] 2. The present invention is provided with an expansion element, and the expansion is performed under the combined force of the centrifugal force when the motor rotates and the negative pressure generated. When these two forces are at a balance point, the expansion size can be controlled. By controlling different balance points, different expansion sizes can be controlled, thereby eliminating the dependence on molds of different specifications.

[0014] 3. The present invention is provided with a temperature connection device, utilizing the heat barrier and cold shrinkage properties and excellent electrical conductivity of liquid mercury, and the hot air in the heating expansion process device expands the mercury to connect the circuit, so that the motor works, and the heat shrinkable tube is heated and expanded at the same time when it reaches the heating expansion process device, which is beneficial to improving the quality of the finished product of the heat shrinkable tube and reducing the scrap rate.

[0015] 4. The present invention is provided with a filtering and plugging device, and uses the motor shaft to drive the fan to rotate. On the one hand, the expanded heat shrink tube can be cooled and shaped, and on the other hand, the waste gas generated by heating the heat shrink tube can be collected and filtered, and the gas pressure can be used to push the cooled and shaped heat shrink tube out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the heating expansion process device of the present invention; Figure 3 It is a schematic diagram of the expansion element structure of the present invention; Figure 4 It is a schematic diagram of the structure of the power supply device of the present invention; Figure 5 It is a schematic diagram of the structure of the temperature connection device of the present invention; Figure 6 It is a schematic diagram of the structure of the filter plugging device of the present invention; Figure 7 It is a structural schematic diagram of the heat shrink tube output device of the present invention; Figure 8 It is a structural schematic diagram of the retweeting device of the present invention.

[0017] The accompanying drawings are marked as follows: 1. heating expansion process device; 101. rotating spine axis; 102. expansion element; 1021. expansion heating block; 1022. telescopic negative pressure tube; 1023. inner plug rod; 103. impeller rotating ring; 104. cooling fan blade; 105. inlet guide round head; 106. motorized long shaft; 107. air diversion cavity; 108. hollow shell tube; 109. alternating spiral coil; 110. external heating strip; 111 , external wires; 2, power supply device; 201, motor; 202, motor rotating shaft; 203, temperature connection device; 2031, liquid mercury ball; 2032, filling tube; 2033, sealing top; 2034, connecting conductive strip; 2035, collector block; 2036, battery connection strip; 204, power source battery; 205, hot air duct; 206, initial wire; 207, AC converter; 20 8. High-frequency transformer; 209. Long conducting wire; 210. Buffer junction; 211. Direct-connected wire; 3. Filter plugging device; 301. Long air inlet pipe; 302. Turning elbow pipe; 303. Connecting box pipe; 304. Filter pressure storage box; 305. Air outlet pipe; 306. Extrusion plug; 307. Blocking spring; 308. Air push elbow; 4. Heat shrink tube output device; 401. Output ring plug; 402. Push plug rod; 403 , fixing strip; 404, through-shaft hole; 405, pull-back spring; 406, positioning rod; 407, welding strip; 408, pushing and rotating device; 4081, upper horizontal column; 4082, last rotating barrel; 4083, pushing pin; 4084, linkage chain; 4085, starting rotating drum; 4086, lower horizontal column; 4087, threaded block; 4088, air-conveying rotating piece; 409, retaining arm; 410, fixed side block. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The expansion device for medium and thick wall heat shrinkable tubes involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] Reference Figures 1 to 8 The present invention provides an expansion device for medium and thick wall heat shrinkable tubes, including a heating expansion process device 1, one end of which is fixedly connected to a power supply device 2, the bottom pipeline of the power supply device 2 is connected to a filtering and plugging device 3, and one side of the filtering and plugging device 3 is welded with a heat shrinkable tube output device 4.

[0020] In a preferred embodiment, the heating expansion process device 1 includes a rotating spindle 101, fifteen expansion elements 102 are welded to the side of the rotating spindle 101, an impeller ring 103 is welded to one end of the side of the rotating spindle 101, three cooling fan blades 104 are welded to the side of the impeller ring 103, an inlet guide round head 105 is welded to one end of the rotating spindle 101, and a motorized long shaft 106 is welded to the other end of the rotating spindle 101, one end of the motorized long shaft 106 is fixedly connected to a power supply device 2, and the side of the motorized long shaft 106 is rotatably connected to an air diversion cavity 107, one side of the air diversion cavity 107 is welded to a hollow shell tube 108, an alternating spiral coil 109 is provided inside the hollow shell tube 108, eighteen external heating strips 110 are welded on the inner wall of the hollow shell tube 108, and one end of the alternating spiral coil 109 is electrically connected to an external wire 111.

[0021] In the present embodiment, it should be specifically added that the alternating solenoid coil 109 is in the shape of a solenoid coil. When a high-frequency alternating current flows in the alternating solenoid coil 109, a high-frequency alternating magnetic field will be generated. The external heating strip 110 is a ferromagnetic metal strip. When the magnetic lines of force pass through the external heating strip 110, the external heating strip 110 will produce an eddy current effect and be heated. The external heating strip 110 is used to heat the outside of the heat shrinkable tube. The inlet guide head 105 is the entrance of the heat shrinkable tube. One end of the heat shrinkable tube is aligned with the inlet guide head 105 and pushed in. When the heat shrinkable tube is completely in the hollow shell tube 108, the expansion element 102 is in the heat shrinkable tube. After the heat shrinkable tube is expanded and cooled and shaped, the heat shrinkable tube is pushed out by the product ring plug 401 and moved out from the hollow shell tube 108 facing the end of the inlet guide head 105.

[0022] In a preferred embodiment, the expansion element 102 includes an expansion heating block 1021 , a telescopic negative pressure tube 1022 is welded to the bottom of the expansion heating block 1021 , and an inner plug rod 1023 is sleeved at the bottom of the telescopic negative pressure tube 1022 .

[0023] In the present embodiment, it should be specifically supplemented that the inner plug rod 1023 is welded to the side of the rotating spine shaft 101 and there are five inner plug rods 1023, telescopic negative pressure tubes 1022 and expansion heating blocks 1021. The expansion heating block 1021 is ferromagnetic and is used to heat the inside of the heat shrink tube and expand the heat shrink tube. When the rotating spine shaft 101 rotates, the telescopic negative pressure tube 1022 will stretch under the action of centrifugal force, and will no longer stretch when the negative pressure inside the telescopic negative pressure tube 1022 reaches a balance with the centrifugal force.

[0024] In a preferred embodiment, the power supply device 2 includes an electric motor 201, one side of the electric motor 201 is connected to a motor rotating shaft 202, one end of the motor rotating shaft 202 is connected to a motor long shaft 106, the other side of the electric motor 201 is electrically connected to a temperature connection device 203, one side of the temperature connection device 203 is electrically connected to a power source battery 204, the bottom of the temperature connection device 203 is sleeved with a hot air duct 205, and the bottom of the power source battery 204 is electrically connected to a temperature connection device 203. There are two initial wires 206 electrically connected, one end of the two initial wires 206 is electrically connected to an AC converter 207, one side of the AC converter 207 is electrically connected to a high-frequency voltage device 208, the top of the high-frequency voltage device 208 is electrically connected to two long conductive wires 209, one end of the long conductive wire 209 is electrically connected to a buffer junction 210, one side of the buffer junction 210 is electrically connected to a direct-connected wire 211, and one end of the direct-connected wire 211 is electrically connected to an external wire 111.

[0025] In this embodiment, it should be specifically supplemented that the motor rotating shaft 202 and the motorized long shaft 106 are formed in one piece, and the direct-connection wire 211 and the external connection wire 111 are formed in one piece.

[0026] In a preferred embodiment, the temperature connection device 203 includes a liquid mercury ball 2031, the top pipe of the liquid mercury ball 2031 is connected to a filling tube 2032, a sealing top 2033 is welded to the top of the filling tube 2032, one side of the filling tube 2032 is electrically connected to a machine conductive strip 2034, the other side of the filling tube 2032 is electrically connected to a power collecting block 2035, and one side of the power collecting block 2035 is electrically connected to two battery connecting strips 2036.

[0027] In the present embodiment, it should be specifically supplemented that the liquid mercury ball 2031 contains liquid mercury and has good electrical conductivity. When the liquid mercury ball 2031 is heated, the volume of the liquid mercury increases, fills the filling tube 2032 and connects the connecting conductive strip 2034 and the power collecting block 2035. When the liquid mercury ball 2031 is not heated, the volume of the mercury is restored, and the connecting conductive strip 2034 and the power collecting block 2035 are disconnected.

[0028] In a preferred embodiment, the filter plugging device 3 includes a long air intake tube 301, a pipe on one side of the long air intake tube 301 is connected to an air guide chamber 107, a pipe on the other side of the long air intake tube 301 is connected to a steering elbow 302, a bottom pipe of the steering elbow 302 is connected to a box connecting pipe 303, a bottom pipe of the box connecting pipe 303 is connected to a filter pressure storage tank 304, a side of the filter pressure storage tank 304 is threadedly connected to an air outlet pipe 305, one end of the air outlet pipe 305 is fixedly connected to an extrusion plug 306, a plugging spring 307 is welded to one side of the extrusion plug 306, and one end of the plugging spring 307 is threadedly connected to an air push elbow 308.

[0029] In this embodiment, it should be specifically supplemented that the steering elbow 302 is formed integrally with the hot air duct 205, and the upper part of the filter pressure storage box 304 is filled with filter material for filtering the exhaust gas generated by the heating of the heat shrink tube. The filtered air enters the lower part of the filter pressure storage box 304 and is discharged by the air push elbow 308.

[0030] In a preferred embodiment, the heat shrink tube output device 4 includes a output ring plug 401, both ends of the back side of the output ring plug 401 are welded with push rods 402, the sides of the two push rods 402 are welded with fixing strips 403, the front of the fixing strip 403 is provided with a through-axis hole 404, the back of the through-axis hole 404 is welded with a pull-back spring 405, one end of the pull-back spring 405 is welded with a motor 201, both sides of the motor 201 are welded with positioning rods 406, one end of the two positioning rods 406 are welded with welding strips 407, one end of two pushing and reversing devices 408 are welded with pushing and reversing devices 408, both ends of the bottom of the pushing and reversing devices 408 are welded with retaining arms 409, and one end of the two retaining arms 409 are welded with fixed side blocks 410.

[0031] In this embodiment, it should be specifically supplemented that one end of the two plug push rods 402 is in contact with the rotating pushing device 408 , and the rotating pushing device 408 is used to squeeze and push the plug push rods 402 . The two fixed side blocks 410 are welded to both sides of the filter pressure storage box 304 .

[0032] In a preferred embodiment, the pushing device 408 includes an upper horizontal column 4081, and the side of the upper horizontal column 4081 is rotatably sleeved with a final rotating barrel 4082, and three squeezing push pins 4083 are welded to both ends of the side of the final rotating barrel 4082. The middle of the final rotating barrel 4082 is fixedly connected with two linkage chains 4084, and the bottom of the two linkage chains 4084 is fixedly connected with a starting rotating cylinder 4085. The inside of the starting rotating cylinder 4085 is rotatably sleeved with a lower horizontal column 4086, and threaded blocks 4087 are welded to both ends of the lower horizontal column 4086. Three air-facing rotating plates 4088 are welded to the middle of the side of the starting rotating cylinder 4085.

[0033] Working principle of the present invention: In the power supply device 2, the power source battery 204 transmits the current to the AC converter 207 through the initial wire 206, and the AC converter 207 converts the current of the power source battery 204 into alternating current, and then the alternating current is transmitted to the high-frequency voltage device 208, and the high-frequency voltage device 208 gives the alternating current a high-frequency voltage, and then transmits it to the buffer junction 210 through the long conductive wire 209, and then transmits it to the external wire 111 through the direct-connected wire 211, and finally transmits it to the alternating coil 109. A high-frequency voltage alternating current flows through the alternating coil 109. Since the alternating coil 109 itself is in the shape of a spiral coil, when the high-frequency alternating current flows through the alternating coil 109, the alternating coil 109 will generate a high-frequency alternating magnetic field, and the expansion heating block 1021 and the outer heating strip 110 are metals with electromagnetic properties. The magnetic lines of force of the high-frequency alternating magnetic field generated by the alternating spiral coil 109 will pass through the expansion heating block 1021 and the outer heating strip 110. The iron atoms in the expansion heating block 1021 and the outer heating strip 110 are affected by the alternating magnetic field, generating an eddy current effect. The eddy current generates heat inside the expansion heating block 1021 and the outer heating strip 110, causing the expansion heating block 1021 and the outer heating strip 110 to heat up rapidly. The heated expansion heating block 1021 and the outer heating strip 110 can heat the heat shrinkable tube in the inner cavity of the hollow shell tube 108, thereby softening it and making it ductile, ready for subsequent expansion. This process uses the high-frequency alternating voltage in the spiral coil to generate an alternating magnetic field and then generate an eddy current effect to cause the expansion heating block 10 21 and the outer heating strip 110 heat up independently, the expansion heating block 1021 heats the inside of the heat shrink tube, and the outer heating strip 110 heats the outside of the heat shrink tube, so that the inside and outside are evenly and fully heated to avoid the problem of insufficient local ductility of the heat shrink tube due to uneven heating. The expansion heating block 1021 and the outer heating strip 110 heat up, and the hot air in the cavity of the hollow shell tube 108 is transmitted to the air diversion cavity 107, and then from the air diversion cavity 107 to the steering elbow 302, the steering elbow 302 is formed integrally with the hot air duct 205, and the hot air to the hot air duct 205 contacts the liquid mercury ball 2031, so that the heat in the air is transferred to the liquid mercury ball 2031, so that the liquid mercury ball 2031 is heated, and liquid mercury is placed in the liquid mercury ball 2031. The liquid mercury in 1 expands in volume due to heat and rises to the filling tube 2032. As it is continuously heated, the mercury fills the filling tube 2032. The liquid mercury has good conductivity and connects the conductive strip 2034 with the collector block 2035 to form a circuit path. At this time, the current of the power source battery 204 flows through the temperature connection device 203 to the motor 201. The motor 201 starts to work, and the motor rotating shaft 202 rotates and is connected to the motorized long shaft 106, thereby driving the expansion element 102 to rotate. The expansion element 102 rotates at a high speed, and the strong centrifugal force pushes the expansion heating block 1021 outward. The expansion heating block 1021 is connected to the telescopic negative pressure tube 1022, so that the telescopic negative pressure tube 1022 moves outward, and the volume of the telescopic negative pressure tube 1022 increases, forming a negative pressure.When the negative pressure and the centrifugal force reach a balance, the telescopic negative pressure tube 1022 no longer extends and is fixed on the inner plug rod 1023, thereby achieving the purpose of expanding the expansion element 102. The expanded expansion element 102 can expand the softened heat shrink tube during rotation. This process utilizes the thermal expansion and contraction and conductivity of liquid mercury, so that the power source battery 204 can supply power to the motor 201 at the right time to make it work. The centrifugal force of the rotation of the expansion element 102 and the negative pressure generated are utilized to extend the telescopic negative pressure tube 1022 to expand the heat shrink tube. This process is carried out while the heat shrink tube is continuously heated, thereby avoiding the heat shrink tube from being heated. The cooling causes the problem of insufficient ductility of the heat shrink tube, which reduces its quality. After the expansion of the heat shrink tube is completed, the power source battery 204 stops providing power to the alternating spiral coil 109, the alternating magnetic field disappears, the expansion heating block 1021 and the external heating strip 110 stop heating, and the motorized long shaft 106 rotates to drive the rotating spine shaft 101 to rotate. At the same time, the impeller ring 103 rotates, and the impeller ring 103 rotates. The cooling fan blades 104 fan the air to discharge the hot air in the inner cavity of the hollow shell tube 108 and the exhaust gas generated after the heat shrink tube is heated into the air ducting cavity 107. At the same time, the heat shrink tube is cooled and shaped by air cooling. The hot air and exhaust gas flow into the filter pressure storage box 304 through the long air intake pipe 301 and the box connecting pipe 303 for filtration and storage. This process avoids the problem that the exhaust gas generated by the heating of the heat shrink tube flows to the surrounding and harms the human body. The continuous influx of air in the filter pressure storage box 304 increases the pressure in the filter pressure storage box 304. When the pressure in the filter pressure storage box 304 reaches a certain value, the air pressure will reopen the extrusion plug 306, and the filtered air in the filter pressure storage box 304 will be quickly discharged through the air push elbow 308. The strong impact of the air flow causes the air-facing rotating blade 4088 to rotate, and under the transmission of the linkage chain 4084 The last rotating barrel 4082 rotates, so that the extrusion push pin 4083 pushes the plug rod 402, and the plug rod 402 pushes the product ring plug 401 to push out the heat shrink tube after cooling and quantification. As the impeller ring 103 continuously blows away the heat in the hollow shell tube 108, the air flowing into the hot air duct 205 does not have high heat to heat the mercury in the liquid mercury ball 2031 to expand. The mercury will quickly cool and shrink, and flow back to the liquid mercury ball 2031. The motor 201 circuit is short-circuited and stops working. In this process, the air dissipated by the heat shrink tube is used to apply air pressure to push out the finished heat shrink tube, avoiding other power consumption and saving resources.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An expansion device for medium-thick wall heat shrinkable tubes, comprising a heating expansion process device (1), characterized in that: One end of the heating expansion process device (1) is fixedly connected to a power supply device (2), a bottom pipeline of the power supply device (2) is connected to a filtering and plugging device (3), and a heat shrink tube output device (4) is welded to one side of the filtering and plugging device (3).

2. The expansion device for medium-thick wall heat shrink tube according to claim 1, characterized in that: The heating expansion process device (1) comprises a rotating spindle (101), fifteen expansion elements (102) are welded to the side of the rotating spindle (101), an impeller ring (103) is welded to one end of the side of the rotating spindle (101), three cooling fan blades (104) are welded to the side of the impeller ring (103), an inlet guide round head (105) is welded to one end of the rotating spindle (101), and a motorized long shaft (106) is welded to the other end of the rotating spindle (101). One end of the movable long shaft (106) is fixedly connected to a power supply device (2), and the side of the movable long shaft (106) is rotatably connected to an air guide chamber (107). A hollow shell tube (108) is welded to one side of the air guide chamber (107), and an alternating spiral coil (109) is arranged inside the hollow shell tube (108). Eighteen external heating strips (110) are welded to the inner wall of the hollow shell tube (108), and one end of the alternating spiral coil (109) is electrically connected to an external wire (111).

3. The expansion device for medium-thick wall heat shrink tube according to claim 2, characterized in that: The expansion element (102) comprises an expansion heating block (1021), the expansion heating block (1021) having a telescopic negative pressure tube (1022) welded to the bottom, and an inner plug rod (1023) sleeved to the bottom of the telescopic negative pressure tube (1022).

4. The expansion device for medium-thick wall heat shrink tube according to claim 1, characterized in that: The power supply device (2) comprises an electric motor (201), a rotating shaft on one side of the electric motor (201) is connected to a motor rotating shaft (202), one end of the motor rotating shaft (202) is connected to a motor long shaft (106), the other side of the electric motor (201) is electrically connected to a temperature connection device (203), one side of the temperature connection device (203) is electrically connected to a power source battery (204), a hot air conduit (205) is sleeved on the bottom of the temperature connection device (203), and the bottom of the power source battery (204) is electrically connected to two Initial wires (206), one end of the two initial wires (206) is electrically connected to an AC converter (207), one side of the AC converter (207) is electrically connected to a high-frequency voltage device (208), the top of the high-frequency voltage device (208) is electrically connected to two long conductive wires (209), one end of the long conductive wire (209) is electrically connected to a buffer junction (210), one side of the buffer junction (210) is electrically connected to a direct-connection wire (211), and one end of the direct-connection wire (211) is electrically connected to an external wire (111).

5. The expansion device for medium-thick wall heat shrink tube according to claim 4, characterized in that: The temperature connection device (203) comprises a liquid mercury ball (2031), the top pipeline of the liquid mercury ball (2031) is connected to a filling tube (2032), the top of the filling tube (2032) is welded with a sealing top (2033), one side of the filling tube (2032) is electrically connected to a machine connection conductive strip (2034), the other side of the filling tube (2032) is electrically connected to a collector block (2035), and one side of the collector block (2035) is electrically connected to two battery connection strips (2036).

6. The expansion device for medium-thick wall heat shrink tube according to claim 1, characterized in that: The filter plugging device (3) comprises a long air intake tube (301), a pipe on one side of the long air intake tube (301) is connected to an air diversion chamber (107), a pipe on the other side of the long air intake tube (301) is connected to a steering elbow (302), a pipe at the bottom of the steering elbow (302) is connected to a box connecting pipe (303), a pipe at the bottom of the box connecting pipe (303) is connected to a filter pressure storage box (304), an air outlet pipe (305) is threadedly connected to one side of the filter pressure storage box (304), an extrusion plug (306) is fixedly connected to one end of the air outlet pipe (305), a plugging spring (307) is welded to one side of the extrusion plug (306), and an air push elbow (308) is threadedly connected to one end of the plugging spring (307).

7. The expansion device for medium-thick wall heat shrink tube according to claim 1, characterized in that: The heat shrink tube output device (4) comprises an output ring plug (401), push rods (402) are welded at both ends of the back of the output ring plug (401), fixing strips (403) are welded to the sides of the two push rods (402), a through-axis hole (404) is provided on the front of the fixing strip (403), a pull-back spring (405) is welded to the back of the through-axis hole (404), a motor (201) is welded to one end of the pull-back spring (405), positioning rods (406) are welded to both sides of the motor (201), welding strips (407) are welded to one end of the two positioning rods (406), a push-back device (408) is welded to one end of two push-back devices (408), retaining arms (409) are welded to both ends of the bottom of the push-back device (408), and fixed side blocks (410) are welded to one end of the two retaining arms (409).

8. The expansion device for medium-thick wall heat shrink tube according to claim 7, characterized in that: The pushing device (408) comprises an upper horizontal column (4081), a side of the upper horizontal column (4081) is rotatably sleeved with a final rotating barrel (4082), both ends of the side of the final rotating barrel (4082) are welded with three pushing pins (4083), the middle of the final rotating barrel (4082) is fixedly connected with two linkage chains (4084), the bottoms of the two linkage chains (4084) are fixedly connected with a starting rotating cylinder (4085), the interior of the starting rotating cylinder (4085) is rotatably sleeved with a lower horizontal column (4086), both ends of the lower horizontal column (4086) are welded with threaded blocks (4087), and the middle of the side of the starting rotating cylinder (4085) is welded with three air-incoming rotating plates (4088).

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