A semi-automatic saddle PE pipe welding equipment

Abstract

A semi-automatic saddle-shaped PE pipe fitting welding device relates to the field of PE pipe processing. The invention comprises an equipment base, an automatic rotating bracket, a saddle weld processing device, a saddle heating device, a saddle weld heating device, a clamping device and a cooling device. The saddle weld heating device, the clamping device and the cooling device are respectively fixed on the automatic rotating bracket. The PE pipe welding process is switched by rotating the automatic rotating bracket fixed on the equipment base 90 degrees multiple times. The operator is only responsible for the loading and unloading process, and the rest is completed by the equipment, which reduces labor costs and improves production safety. The heating of the saddle-shaped PE pipe and the heating of the PE straight pipe weld can be carried out simultaneously, and a cooling device is provided to improve production efficiency. By replacing the operating device, the welding of saddle-shaped PE pipes of various sizes and specifications can be realized, which improves the versatility of the product.

Description

Technical Field

[0001] The invention relates to the field of PE pipe processing, in particular to a semi-automatic saddle-shaped PE pipe fitting welding device. Background Art

[0002] With the rapid development of industrial production, the demand for PE pipe fittings in factories is increasing. With the improvement of various production processes, three-way PE pipe fittings have become a necessity for pipeline transportation related industries. Three-way PE pipe fittings are difficult to be formed in one step through molding, and the three-way PE pipes required for industrial production are of various types. Therefore, saddle-shaped PE pipe fitting welding has become the main processing method for three-way PE pipe fittings. The traditional saddle-shaped PE pipe fitting welding process is cumbersome and inefficient, and the melting process of the pipeline is prone to scalding the operators. The existing auxiliary welding device is difficult to adapt to the assembly line operation under different pipe diameters. Therefore, a semi-automatic saddle-shaped PE pipe fitting auxiliary welding device that is suitable for assembly line production is urgently needed. Summary of the invention

[0003] In view of the above-mentioned deficiencies, the present invention provides a semi-automatic saddle-shaped PE pipe fitting welding device.

[0004] The present invention is achieved through the following technical scheme: a semi-automatic saddle-shaped PE pipe fitting welding equipment, including an equipment base, an automatic rotating bracket, a saddle weld processing device, a saddle heating device, a saddle weld heating device, a clamping device and a cooling device, the equipment base is fixed on the ground, the front end of the automatic rotating bracket is fixedly connected to the front end of the equipment base, the rear end of the automatic rotating bracket is rotationally connected to the front end of the equipment base, the saddle weld processing device is fixedly connected to the rear end of the equipment base, the saddle heating device is fixed on the right side of the equipment base, and the saddle weld heating device, the clamping device and the cooling device are respectively fixedly connected to the three circumferential surfaces of the rear end of the automatic rotating bracket in the stated order.

[0005] As an optimization, the equipment base is fixedly connected with an automatic rotating bracket mounting platform, a saddle weld processing device mounting platform, a pipe fixing device mounting platform and a saddle heating device mounting platform, the automatic rotating bracket mounting platform is located at the front end of the equipment base, the automatic rotating bracket mounting platform is provided with an L-shaped bracket, the saddle weld processing device mounting platform is located at the rear end of the equipment base, the pipe fixing device mounting platform is located in the middle position of the equipment base and runs through the front and rear ends of the equipment base, two pipe fixers are fixedly connected at both ends of the pipe fixing device, and the saddle heating device mounting platform is located on the right side of the equipment base.

[0006] As an optimization, the automatic rotating bracket includes a stepper motor, a rotating shaft, a rotating bracket and three pneumatic spring telescopic rods, the stepper motor is fixedly connected to the automatic rotating bracket mounting platform, one end of the rotating shaft is fixedly connected to the stepper motor speed output end, the other end of the rotating shaft is fixedly connected to the axial center position of the rotating bracket, the middle position of the rotating shaft is rotatably connected to the automatic rotating bracket mounting platform, the three pneumatic spring telescopic rods are all fixedly connected to the circumference of the rotating bracket, the pneumatic spring telescopic rod includes an outer rod and an inner rod, a first compression spring is arranged at one end of the outer rod, and an air cavity is arranged at the other end.

[0007] As an optimization, the saddle weld processing device includes a horizontal ball screw mechanism, a vertical ball screw mechanism, a servo motor, a tool spindle and a conical grinder. The horizontal ball screw mechanism and the vertical ball screw mechanism are respectively provided with a first fixed plate and a second fixed plate. The horizontal ball screw mechanism is fixed on the saddle weld processing device mounting table, the vertical ball screw mechanism is fixed on the first fixed plate, the servo motor is fixed on the second fixed plate, one end of the tool spindle is fixedly connected to the speed output end of the servo motor, and the other end of the tool spindle is fixedly connected to the conical grinder. A ball bearing is provided on the second fixed plate, and the middle position of the tool spindle is rotatably connected to the second fixed plate through a ball bearing.

[0008] As an optimization, the saddle heating device includes a saddle heater and a heater base. There are several saddle heaters with different sizes. The outer contour edges of the several saddle heaters of different sizes are all provided with resistance heating devices. The several saddle heaters of different sizes are all fixedly connected to the heater base, and the heater base is slidably connected to the saddle heating device mounting platform.

[0009] As an optimization, the saddle weld heating device is fixedly connected to the end of the first pneumatic spring telescopic rod, and a resistance heating device is provided at the edge of the outer contour of the saddle weld heating device. The outer contour of the saddle weld heating device can be meshed with the outer contour of one of the saddle heaters.

[0010] As an optimization, the clamping device includes a mounting tube, a self-locking spring switch and a clamping mechanism, one end of the mounting tube is fixed to the end of the second pneumatic spring telescopic rod, and the other end of the mounting tube is provided with an annular mounting platform, and the self-locking spring switch is fixedly connected to one end of the mounting tube close to the second pneumatic spring telescopic rod, the self-locking spring switch includes a switch plate, a second compression spring and an elastic self-locking pin, the clamping mechanism is fixedly connected to the switch plate, the clamping mechanism includes two support rods and a fixed rod, one end of the fixed rod is fixedly connected to the switch plate, and the other end of the fixed rod is hinged to the two support rods respectively.

[0011] As an optimization, an air inlet cavity and an air outlet cavity are provided inside the cooling device, the top of the cooling device is fixedly connected to the outer rod of the third pneumatic spring telescopic rod, the inner rod of the third pneumatic spring telescopic rod is slidably connected between the air inlet cavity and the air outlet cavity of the cooling device, and a plug is provided at the end of the inner rod of the third pneumatic spring telescopic rod.

[0012] As an optimization, the parts to be welded are saddle-shaped PE pipes and PE straight pipes. The processing method of the saddle weld processing device and the outer contour and size of the saddle weld heating device are determined by the outer contour and size of the saddle weld heating device. The saddle weld heating device and the clamping device are provided with multiple replacements of different sizes.

[0013] The benefits of the invention are as follows: the invention adopts a semi-automatic PE pipe welding method, and the operator is only responsible for loading and unloading, and does not directly contact the heated PE pipe, which reduces labor costs and improves production safety; the automatic rotating bracket switches the process every 90° driven by the stepper motor, which is more suitable for assembly line operations; the saddle weld processing device and the saddle heating device are placed vertically to each other, and two heating processes can be completed at the same time. The cooling device can increase the pipe forming speed after welding, thereby improving production efficiency; all processing devices can adapt to PE pipe fittings of different sizes and specifications, and the entire equipment has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a general schematic diagram of the present invention;

[0015] Attached Figure 2 This is a schematic diagram of the automatic rotating bracket rotating 90 degrees clockwise;

[0016] Attached Figure 3 This is a schematic diagram of the automatic rotating bracket rotating 180 degrees clockwise;

[0017] Attached Figure 4 This is a schematic diagram of the automatic rotating bracket rotating 270 degrees clockwise;

[0018] Attached Figure 5 It is a cross-sectional view of the pneumatic spring telescopic rod and the cooling device;

[0019] Attached Figure 6 is a cross-sectional view of the clamping device;

[0020] Attached Figure 7 This is the axonometric view of the clamping device.

[0021] In the figure, 1. equipment base, 2. automatic rotating bracket, 3. saddle weld processing device, 4. saddle heating device, 5. saddle weld heating device, 6. clamping device, 7. cooling device, 101. automatic rotating bracket mounting table, 102. saddle weld processing device mounting table, 103. pipeline fixing device mounting table, 104. saddle heating device mounting table, 105. L-shaped bracket, 106. pipeline fixing device, 201. stepping motor, 202. rotating shaft, 203. rotating bracket, 204. first pneumatic spring telescopic rod, 205. second pneumatic spring telescopic rod, 206. third pneumatic spring telescopic rod, 207. outer rod, 208. inner rod, 209. first compression spring, 210. air cavity, 301. horizontal ball wire Lever mechanism, 302, vertical ball screw mechanism, 303, servo motor, 304, tool spindle, 305, conical grinder, 306, first fixed plate, 307, second fixed plate, 308, ball bearing, 401, saddle heater, 402, heater base, 403, first resistance heating device, 501, stepped surface, 502, second resistance heating device, 601, mounting cylinder, 602, self-locking spring switch, 603, clamping mechanism, 604, annular mounting table, 605, switch plate, 606, second compression spring, 607, elastic self-locking pin, 608, support rod, 609, fixing rod, 701, air inlet chamber, 702, air outlet chamber, 703, plug, 801, saddle-shaped PE pipe, 802, PE straight pipe. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by ordinary technicians in the technical field to which the present application belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0024] like Figure 1 and Figure 2As shown, in this embodiment, a semi-automatic saddle-shaped PE pipe 801-piece welding equipment includes an equipment base 1, an automatic rotating bracket 2, a saddle weld processing device 3, a saddle heating device 4, a saddle weld heating device 5, a clamping device 6 and a cooling device 7. The equipment base 1 is fixed on the ground, the front end of the automatic rotating bracket 2 is fixedly connected to the front end of the equipment base 1, and the rear end of the automatic rotating bracket 2 is rotationally connected to the front end of the equipment base 1. The saddle weld processing device 3 is fixedly connected to the rear end of the equipment base 1, and the saddle heating device 4 is fixed on the right side of the equipment base 1. The saddle weld heating device 5, the clamping device 6 and the cooling device 7 are respectively fixedly connected to the three circumferential surfaces at the rear end of the automatic rotating bracket 2 in the described order. The rotation of the automatic rotating bracket 2 driven by the stepping motor 201 can complete the switching of different processing procedures, and can be reciprocated, which is more adaptable to assembly line production.

[0025] In this embodiment, the equipment base 1 is fixedly connected with an automatic rotating bracket mounting platform 101, a saddle welding joint processing device mounting platform 102, a pipe fixing device mounting platform 103 and a saddle heating device mounting platform 104. The automatic rotating bracket mounting platform 101 is located at the front end of the equipment base 1. The automatic rotating bracket mounting platform 101 is provided with an L-shaped bracket 105. The L-shaped bracket 105 can touch the self-locking spring switch 602 when the clamping device 6 moves down, thereby releasing the saddle-shaped PE pipe 801. The saddle welding joint processing device mounting platform 102 is located at the rear end of the equipment base 1. The pipe fixing device mounting platform 103 is located in the middle position of the equipment base 1 and runs through the front and rear ends of the equipment base 1, and is used to fix the pipe to be welded. Two pipe fixers are fixedly connected to both ends of the pipe fixing device 106 to prevent the PE straight pipe 802 from rotating or displacing during processing. The saddle heating device mounting platform 104 is located on the right side of the equipment base 1.

[0026] like Figure 2 and Figure 5As shown, in this embodiment, the automatic rotating bracket 2 includes a stepper motor 201, a rotating shaft 202, a rotating bracket 203 and three pneumatic spring telescopic rods, the stepper motor 201 is fixedly connected to the automatic rotating bracket mounting platform 101, one end of the rotating shaft 202 is fixedly connected to the speed output end of the stepper motor 201, the other end of the rotating shaft 202 is fixedly connected to the axial center position of the rotating bracket 203, the middle position of the rotating shaft 202 is rotatably connected to the automatic rotating bracket mounting platform 101, and the three pneumatic spring telescopic rods are fixedly connected to the automatic rotating bracket mounting platform 101. The pneumatic spring telescopic rod is fixedly connected to the circumference of the rotating bracket 203, and includes an outer rod 207 and an inner rod 208. A first compression spring 209 is arranged at one end of the outer rod 207, and an air cavity 210 is arranged at the other end. When the air cavity 210 is filled with compressed air, the pressure of the air cavity 210 is greater than the pressure of the first compression spring 209, and the inner rod 208 contracts. When no compressed air is injected into the air cavity 210, the pressure of the first compression spring 209 is greater than the pressure of the air cavity 210, and the inner rod 208 extends outward. The free control of the extension and contraction of the pneumatic spring telescopic rod can be achieved only by turning on and off the compressed air.

[0027] like Figure 1 and Figure 2 As shown, in this embodiment, the saddle weld processing device 3 includes a horizontal ball screw mechanism 301, a vertical ball screw mechanism 302, a servo motor 303, a tool spindle 304 and a conical grinder 305, and the horizontal ball screw mechanism 301 and the vertical ball screw mechanism 302 are respectively provided with a first fixed plate 306 and a second fixed plate 307, the horizontal ball screw mechanism 301 is fixed on the saddle weld processing device mounting table 102, and the vertical ball screw mechanism 302 is fixed on the first fixed plate 306. The servo motor 303 is fixed on the second fixed plate 307, one end of the tool spindle 304 is fixedly connected to the speed output end of the servo motor 303, the other end of the tool spindle 304 is fixedly connected to the conical grinder 305, a ball bearing 308 is provided on the second fixed plate 307, the middle position of the tool spindle 304 is rotatably connected to the second fixed plate 307 through the ball bearing 308, and the saddle weld processing of different pipe diameters can be achieved by controlling the feed amount and horizontal movement amount of the conical grinder 305.

[0028] In this embodiment, the saddle heating device 4 includes a saddle heater 401 and a heater base 402. The saddle heaters 401 are provided with several different sizes. The outer contour edges of the saddle heaters 401 of different sizes are all provided with a first resistance heating device 403. The saddle heaters 401 of different sizes are all fixedly connected to the heater base 402. The heater base 402 is slidably connected to the saddle heating device mounting platform 104. Saddle heaters 401 of different sizes can heat saddle-shaped PE pipes 801 of different sizes. The sizes of different saddle heaters 401 can be adjusted by sliding the heater base 402.

[0029] like Figure 3 As shown, in this embodiment, the saddle weld heating device 5 is fixedly connected to the end of the first pneumatic spring telescopic rod 204, and the outer contour edge of the saddle weld heating device 5 is provided with a step surface 501 and a second resistance heating device 502. The step surface 501 can better fit the processed weld to achieve hot melting of the weld without dead angles. The resistance heating device can better control the welding temperature and improve the welding quality. The outer contour of the saddle weld heating device 5 and the outer contour of one of the saddle heaters 401 can be meshed with each other, ensuring the mutual coordination between the shapes of the saddle PE pipe 801, the saddle weld heating device 5 and the saddle heater 401, so that there are no dead angles in the melting area of ​​the saddle PE pipe 801 and the saddle weld, thereby improving the welding quality.

[0030] like Figure 6 and Figure 7As shown, in this embodiment, the clamping device 6 includes a mounting tube 601, a self-locking spring switch 602 and a clamping mechanism 603. One end of the mounting tube 601 is fixed to the end of the second pneumatic spring telescopic rod 205, and the other end of the mounting tube 601 is provided with an annular mounting platform 604. The annular mounting platform 604 limits the horizontal displacement of the saddle-shaped PE tube 801 and can provide pressure. The self-locking spring switch 602 is fixedly connected to one end of the mounting tube 601 near the second pneumatic spring telescopic rod 205. The self-locking spring switch 602 includes a switch plate 605, a second compression spring 606 and an elastic self-locking pin 607. When the clamping device 6 moves downward, the L-shaped bracket 105 touches the switch plate 605, and the second compression spring 606 is compressed and contracts until it touches the elastic self-locking pin 607. Self-locking pin 607, elastic self-locking pin 607 locks the switch plate 605, and the self-locking spring switch 602 is turned from the open position to the closed position. The clamping mechanism 603 is fixedly connected to the switch plate 605. The clamping mechanism 603 includes two support rods 608 and a fixed rod 609. One end of the fixed rod 609 is fixedly connected to the switch plate 605, and the other end of the fixed rod 609 is hinged to the two support rods 608 respectively. When the self-locking spring switch 602 is in the open position, the two support rods 608 firmly support the saddle-shaped PE tube 801 to limit its horizontal rotation and vertical movement. When the self-locking spring switch 602 is in the closed position, the two support rods 608 have no supporting effect on the saddle-shaped PE tube 801, and the process of releasing the saddle-shaped PE tube 801 can be realized.

[0031] like Figure 5 As shown, in this embodiment, an air inlet cavity 701 and an air outlet cavity 702 are provided inside the cooling device 7, the top end of the cooling device 7 is fixedly connected to the outer rod 207 of the third pneumatic spring telescopic rod 206, the inner rod 208 of the third pneumatic spring telescopic rod 206 is slidably connected between the air inlet cavity 701 and the air outlet cavity 702 of the cooling device 7, and a plug 703 is provided at the end of the inner rod 208 of the third pneumatic spring telescopic rod 206. When the inner rod 208 contracts, the plug 703 blocks the air inlet cavity 701 and the air outlet cavity 702, and no gas is ejected from the cooling device 7. When the inner rod 208 is extended, the plug 703 has no sealing effect, and the compressed gas enters the air outlet cavity 702 from the air inlet cavity 701, and the cooling device 7 starts to eject gas. The gas enters the interior of the pipeline from the upper end of the saddle-shaped PE pipe 801, and the high-speed flow of the gas can quickly dissipate heat from the weld, accelerate the cooling and forming of the welding position, and improve the equipment operation efficiency.

[0032] like Figure 1As shown, in this embodiment, the parts to be welded are a saddle-shaped PE pipe 801 and a PE straight pipe 802. The processing method of the saddle weld processing device 3 and the outer contour and size of the saddle weld heating device 5 are determined by the outer contour and size of the saddle weld heating device 5. The saddle weld heating device 5 and the clamping device 6 are provided with a plurality of replacements of different sizes, thereby realizing welding operations of PE pipes of various sizes and specifications and improving the versatility of the equipment.

[0033] Working principle: Before starting work, all air cavities 210 and air inlet cavities 701 are connected to the compressed air source. First, the PE straight pipe 802 to be processed is fixed on the equipment base 1 through the pipe fixer. The operator presses the self-locking spring switch 602, and the elastic self-locking pin 607 locks the self-locking spring switch 602. At this time, the clamping mechanism 603 is in a relaxed state. The saddle-shaped PE pipe 801 to be welded is placed on the annular mounting table 604, and the elastic self-locking pin 607 is released. The self-locking spring switch 602 returns to its position, and the clamping mechanism 603 supports the inner wall of the saddle-shaped PE pipe 801. At this time, the internal air cavities 210 of the three pneumatic spring telescopic rods are filled with compressed gas, the first compression spring 209 is in a compressed state, all the inner rods 208 are contracted, and the inner rod 208 plug 703 in the third pneumatic spring telescopic rod 206 locks the passage between the air inlet cavity 701 and the air outlet cavity 702. The servo motor 303 starts to rotate, the horizontal ball screw mechanism 301 pushes the first fixed plate 306 forward to the bottom of the rotating bracket 203, the vertical ball screw mechanism 302 pushes the second fixed plate 307 to the PE straight pipe 802, and the conical grinder 305 is lowered to a specified depth. Figure 1 In the state shown, the processing of the universal saddle welding port (the saddle PE pipe 801 is determined by the shape of the saddle welding port) is started. After the processing is completed, the saddle welding port processing device 3 returns to its original position, and the stepper motor 201 rotates 90 degrees clockwise, as shown in the attached figure. Figure 2 As shown, the internal air cavity 210 of the three pneumatic spring telescopic rods stops supplying compressed gas, the first compression spring 209 stretches, and the step surface 501 in the saddle weld heating device 5 is firmly pressed against the saddle weld of the PE straight tube 802. The second resistance heating device 502 melts and heats the saddle weld. At the same time, the saddle PE tube 801 is firmly pressed against the saddle heater 401 by the clamping device 6, and the saddle PE tube 801 is melted and heated. After a period of time, the compressed gas is re-injected into the internal air cavity 210 of the three pneumatic spring telescopic rods, all the inner rods 208 shrink, the saddle weld heating device 5 leaves the saddle weld of the PE straight tube 802, the saddle PE tube 801 leaves the saddle heater 401, and the stepper motor 201 rotates 90 degrees clockwise, as shown in the attached figure. Figure 3As shown, the internal air chamber 210 of the three pneumatic spring telescopic rods stops supplying compressed gas, all the internal rods 208 extend, and when the saddle-shaped PE tube 801 moves downward, the L-shaped bracket 105 presses the self-locking spring switch 602, and the clamping mechanism 603 relaxes. At this time, the clamping device 6 has released the saddle-shaped PE tube 801, and the saddle-shaped PE tube 801 is firmly pressed by the annular mounting table 604 at the saddle-shaped welding port of the PE straight tube 802 to carry out the welding process. After a period of time, the compressed gas is re-injected into the internal air chamber 210 of the three pneumatic spring telescopic rods, all the internal rods 208 shrink, the clamping device 6 leaves the saddle-shaped PE tube 801, and the stepper motor 201 rotates 90 degrees clockwise, as shown in the attached figure. Figure 4 As shown, the internal air chamber 210 of the three pneumatic spring telescopic rods stops supplying compressed gas, all the inner rods 208 are extended, the plug 703 in the cooling device 7 is released, and the compressed gas flows from the air inlet chamber 701 into the air outlet chamber 702 and blows into the saddle-shaped PE pipe 801 and the PE straight pipe 802 from the cooling device 7, accelerating the welding cooling process. After a period of time, the welded PE pipe fittings are removed from the pipeline fixture 106, the stepper motor 201 rotates 270 degrees counterclockwise, and the automatic rotating bracket 2 returns to the initial position, waiting for the next process cycle. The stepper motor 201 rotates 270 degrees counterclockwise to release the entanglement of the pipeline for transmitting electricity and compressed air. When the size of the welded parts to be welded is changed, the saddle weld joint heating device 5 and the clamping device 6 of the corresponding size are replaced on the equipment, the sliding heater base 402 selects the appropriate saddle heater 401 specifications, and the feed amount of the saddle weld joint processing device 3 is adjusted to achieve welding of PE pipe fittings of different sizes.

[0034] For those skilled in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A semi-automatic saddle PE pipe welding equipment, characterized by: The invention comprises an equipment base, an automatic rotating bracket, a saddle weld processing device, a saddle heating device, a saddle weld heating device, a clamping device and a cooling device, wherein the saddle heating device comprises a saddle heater and a heater base, the equipment base is fixed on the ground, the front end of the automatic rotating bracket is fixedly connected to the front end of the equipment base, the rear end of the automatic rotating bracket is rotationally connected to the front end of the equipment base, the saddle weld processing device is fixedly connected to the rear end of the equipment base, the saddle heating device is fixed on the right side of the equipment base, the saddle weld heating device, the clamping device and the cooling device are respectively fixedly connected in sequence to the three circumferential surfaces at the rear end of the automatic rotating bracket, and the equipment base is fixedly connected with the automatic rotating bracket mounting table, the saddle weld processing device The automatic rotating bracket mounting platform is located at the front end of the equipment base, and the automatic rotating bracket mounting platform is provided with an L-shaped bracket. The saddle weld processing device mounting platform is located at the rear end of the equipment base. The pipeline fixing device mounting platform is located in the middle position of the equipment base and runs through the front and rear ends of the equipment base. Two pipeline fixers are fixedly connected at both ends of the pipeline fixing device. The saddle heating device mounting platform is located on the right side of the equipment base. The automatic rotating bracket includes a stepping motor, a rotating shaft, a rotating bracket and three pneumatic spring telescopic rods. The three pneumatic spring telescopic rods include a first pneumatic spring telescopic rod, a second pneumatic spring telescopic rod and a third pneumatic spring telescopic rod. Rod, the stepper motor is fixedly connected to the automatic rotating bracket mounting platform, one end of the rotating shaft is fixedly connected to the speed output end of the stepper motor, the other end of the rotating shaft is fixedly connected to the axial center position of the rotating bracket, the middle position of the rotating shaft is rotatably connected to the automatic rotating bracket mounting platform, the three pneumatic spring telescopic rods are all fixedly connected to the circumference of the rotating bracket, the pneumatic spring telescopic rod includes an outer rod and an inner rod, one end of the outer rod is provided with a first compression spring, and the other end is provided with an air cavity, the saddle weld joint heating device is fixedly connected to the end of the first pneumatic spring telescopic rod, the outer contour edge of the saddle weld joint heating device is provided with a stepped surface and a second resistance heating device, the outer contour of the saddle weld joint heating device is The outer contours of the saddle heater can mesh with each other, the clamping device includes a mounting tube, a self-locking spring switch and a clamping mechanism, the L-shaped bracket can touch the self-locking spring switch when the clamping device moves downward, one end of the mounting tube is fixed to the end of the second pneumatic spring telescopic rod, and the other end of the mounting tube is provided with an annular mounting platform, and the self-locking spring switch is fixedly connected to one end of the mounting tube near the second pneumatic spring telescopic rod, the self-locking spring switch includes a switch plate, a second compression spring and an elastic self-locking pin, and the clamping mechanism is fixedly connected to the switch plate, the clamping mechanism includes two support rods and a fixed rod, one end of the fixed rod is fixedly connected to the switch plate, and the other end of the fixed rod is hinged to the two support rods respectively,The cooling device is provided with an air inlet cavity and an air outlet cavity inside, the top of the cooling device is fixedly connected to the outer rod of the third pneumatic spring telescopic rod, the inner rod of the third pneumatic spring telescopic rod is slidably connected between the air inlet cavity and the air outlet cavity of the cooling device, and a plug is provided at the end of the inner rod of the third pneumatic spring telescopic rod.

2. The semi-automatic saddle PE pipe welding equipment according to claim 1, characterized in that: The saddle weld processing device includes a horizontal ball screw mechanism, a vertical ball screw mechanism, a servo motor, a tool spindle and a conical grinder. The horizontal ball screw mechanism and the vertical ball screw mechanism are respectively provided with a first fixed plate and a second fixed plate. The horizontal ball screw mechanism is fixed on the saddle weld processing device mounting table, the vertical ball screw mechanism is fixed on the first fixed plate, the servo motor is fixed on the second fixed plate, one end of the tool spindle is fixedly connected to the speed output end of the servo motor, and the other end of the tool spindle is fixedly connected to the conical grinder. A ball bearing is provided on the second fixed plate, and the middle position of the tool spindle is rotatably connected to the second fixed plate through a ball bearing.

3. The semi-automatic saddle PE pipe welding equipment according to claim 2, characterized in that: The saddle heating device includes a saddle heater and a heater base. There are several saddle heaters with different sizes. The outer contour edges of the several saddle heaters with different sizes are all provided with a first resistance heating device. The several saddle heaters with different sizes are all fixedly connected to the heater base, and the heater base is slidably connected to the saddle heating device mounting platform.

4. The semi-automatic saddle PE pipe welding equipment according to claim 3, characterized in that: The parts to be welded are saddle-shaped PE pipes and PE straight pipes. The processing method of the saddle weld processing device and the outer contour and size of the saddle weld heating device are determined by the outer contour and size of the saddle PE pipe. The saddle weld heating device and the clamping device are provided with multiple replacements of different sizes.

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