Flaring device for PPR pipe fitting

Abstract

The utility model discloses a flaring device for a PPR (polypropylene random) pipe fitting, which comprises a base, wherein a deck plate is arranged above the base; a pipe expanding assembly, a bearing assembly and a positioning assembly are arranged above the deck plate, and a PPR pipe is arranged on the bearing assembly; a fixing base is arranged at the end, close to the bearing assembly, of the base, a containing bin is arranged above the fixing base, and a PPR pipe is arranged in the containing bin. Through the design of the bearing assembly, the positioning assembly and a movable wedge block, a pipe expanding barrel and the like in the pipe expanding assembly, PPR pipe fittings with different diameters can be rapidly and stably fixed. Particularly, due to the design of the movable wedge block, the distance between the two pipe expanding barrels can be flexibly adjusted through driving of the telescopic air cylinder so as to adapt to pipe fittings of different sizes, and the flaring accuracy and efficiency are improved; automatic operation of the PPR pipe fitting flaring process is achieved, manual intervention is remarkably reduced, labor intensity is lowered, production efficiency is improved, and potential safety hazards caused by manual operation are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe material processing technical field, especially a flaring device of PPR pipe fitting. BACKGROUND

[0002] PPR pipe fitting, because of its excellent energy-saving material characteristics, environmental protection advantage, light weight high-strength performance, corrosion resistance, smooth inner wall design (effective prevention of fouling), convenient construction and maintenance process and long service life, has become the preferred material in the field of water supply and drainage pipeline, gas pipeline, power sheath and so on.

[0003] In the production process of PPR pipe fitting, the flaring link is very important, which directly determines the subsequent connection and installation effect of the pipe fitting.However, the PPR pipe fitting flaring devices on the current market mostly still rely on manual pipe feeding and discharging operation, which not only significantly increases the labor intensity of workers and labor cost, but more importantly, it brings about a safety hazard that cannot be ignored; more importantly, the existing flaring device has obvious short board in pipe fitting, and lacks a quick and flexible fixing mechanism for PPR pipe fittings of different diameters, which greatly limits the efficiency and accuracy of flaring operation; the pipe fitting cannot be effectively fixed, which not only affects the quality of flaring, but also increases the uncertainty and adjustment cost in the production process, thereby further reducing the overall work efficiency. SUMMARY

[0004] The utility model discloses a flaring device of PPR pipe fitting to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a flaring device of PPR pipe fitting, including base, wherein the base top is equipped with mesa board;The mesa board top is provided with pipe expanding assembly, wherein the pipe expanding assembly is movably connected with the mesa board;The mesa board top is equipped with the bearing assembly away from the pipe expanding assembly side, wherein the bearing assembly lower end is fixedly connected with the mesa board, and the bearing assembly upper end is provided with PPR pipe;The bearing assembly one side is equipped with positioning assembly, wherein the positioning assembly lower end is fixedly connected with the mesa board, and the positioning assembly upper end is arranged above the PPR pipe;The base one end close to the bearing assembly is equipped with fixed base, wherein the fixed base top is equipped with containing bin;The containing bin inner wall is " V " letter shape structure, wherein the containing bin is equipped with PPR pipe.

[0006] Preferably, the pipe expanding assembly includes a sliding table, wherein the sliding table is slidingly connected with the mesa board;The sliding table top is equipped with bearing seat, wherein the bearing seat lower end is fixedly connected with the sliding table through the support block;The bearing seat is installed with hollow shaft, wherein the hollow shaft is rotatably connected with the bearing seat;The hollow shaft front end is equipped with mounting plate, wherein the hollow shaft front end extends out of the bearing seat and is fixedly connected with the mounting plate through the flange.

[0007] Preferably, the mounting plate is provided with a movable slot on the side away from the hollow shaft, two sliders are symmetrically installed in the movable slot, and a limiting sliding groove is formed in each side wall of the movable slot close to the slider.

[0008] Preferably, an expansion cylinder is fixedly installed at the front end of each slider, the expansion cylinder has a circular truncated cone structure, and the distance between the two expansion cylinders is equivalent to the inner diameter of the PPR pipe.

[0009] Preferably, a movable wedge is arranged in the movable slot between the two sliders, the movable wedge has a trapezoidal structure, and the inclined surfaces arranged on the two sides of the movable wedge respectively abut against the sliders; a telescopic air cylinder is fixedly installed at the rear end of the bearing seat, the top end of the piston rod of the telescopic air cylinder penetrates through the center hole of the hollow shaft and extends into the movable slot; a connecting bearing is installed at the bottom end of the movable wedge, and the top end of the piston rod of the telescopic air cylinder is arranged in the connecting bearing; the top end of the piston rod of the telescopic air cylinder is rotationally connected with the movable wedge through the connecting bearing, and the telescopic air cylinder drives the movable wedge to extend and retract through the piston rod.

[0010] Preferably, a spring is arranged at the end of the slider away from the movable wedge, one end of the spring is fixedly connected with the slider, and the other end of the spring is fixedly connected with the inner wall of the movable slot.

[0011] Preferably, a speed reducer motor is arranged side by side on one side of the bearing seat, the speed reducer motor is fixedly connected with the sliding table through a motor mounting seat, a driving pulley is fixedly installed on the output shaft of the speed reducer motor, a driven pulley is fixedly installed on the outer wall of the front end of the hollow shaft, and the driven pulley is drivingly connected with the driving pulley through a belt.

[0012] Preferably, a guide sliding groove is symmetrically formed at the lower end of the sliding table on both sides, two straight sliding rails that are adapted to the guide sliding groove are symmetrically installed on the upper end of the table panel, and a first driving air cylinder is arranged close to the rear end of the sliding table.

[0013] Preferably, a mounting slot is formed at the front end of the sliding table, an induction heating ring is arranged in the mounting slot, the height of the induction heating ring is equivalent to the height of the PPR pipe, and the inner diameter of the induction heating ring is greater than the diameter of the PPR pipe.

[0014] Preferably, the bearing assembly comprises a support seat, wherein the lower end of the support seat is fixedly connected with the table panel; the upper end of the support seat is fixedly installed with a worm screw lifter, wherein the top lifting screw of the worm screw lifter is fixedly connected with a bearing plate through a flange; both ends of the bearing plate are symmetrically installed with supporting tables, wherein the upper end of the supporting table is provided with a V-shaped clamping groove; a plurality of material guiding rollers are arranged on the inner side wall of the V-shaped clamping groove, wherein a PPR pipe is arranged in the V-shaped clamping groove, and the outer wall of the PPR pipe abuts against the material guiding roller.

[0015] Preferably, the positioning assembly comprises a fixed frame, wherein the lower end of the fixed frame is fixedly connected with the table panel; a second driving cylinder is horizontally arranged above the fixed frame, wherein the top end of the piston rod of the second driving cylinder extends towards one side of the bearing plate; the top end of the piston rod of the second driving cylinder is fixedly installed with a movable plate, wherein a third driving cylinder is vertically installed on the side of the movable plate away from the second driving cylinder; the top end of the piston rod of the third driving cylinder is fixedly connected with a positioning chuck, wherein the positioning chuck is arranged above the bearing plate; the positioning chuck is in a V-shaped structure, wherein an antiskid pad is arranged on the inner wall of the positioning chuck.

[0016] Preferably, the inner cavity of the accommodating bin is provided with a material guiding groove along the length direction thereof, wherein a discharge port is arranged below the first side plate of the accommodating bin close to the table panel, and the discharge port is in communication with the material guiding groove; a feeding cylinder is arranged below the second side plate of the accommodating bin away from the discharge port, wherein the feeding cylinder is arranged on the outer wall of the second side plate; the cylinder body of the feeding cylinder is fixedly connected with the second side plate, wherein the top end of the piston rod of the feeding cylinder penetrates through the second side plate and extends into the material guiding groove; the top end of the piston rod of the feeding cylinder is fixedly installed with a material pushing plate, wherein the material pushing plate is in a circular truncated cone structure, and the diameter of the material pushing plate is greater than the inner diameter of the PPR pipe.

[0017] Compared with the prior art, the utility model have the advantages that: the utility model discloses through the design of the movable wedge block in the bearing assembly, the positioning assembly and the pipe expanding assembly and the pipe expanding cylinder, the utility model can realize the quick and stable fixing of the PPR pipe fitting of different diameters, especially the design of the movable wedge block, through the drive of the telescopic cylinder, can adjust the interval between two pipe expanding cylinders flexibly, to adapt to the pipe fitting of different sizes, improve the accuracy and efficiency of the flaring, through setting the induction heating ring, preheats the PPR pipe fitting, helps the pipe material to soften, reduces the flaring difficulty, improves the flaring quality, simultaneously, the circular truncated cone structure design of the pipe expanding cylinder makes the flaring process more uniform and smooth, the support platform and the material guide roller cylinder design in the bearing assembly help to protect the pipe fitting surface, prevent the scratch during the flaring process, the V-shaped positioning chuck and the antiskid pad in the positioning assembly ensure the stability and safety of the pipe fitting during the flaring process, the utility model realizes the automation operation of the PPR pipe fitting flaring process, reduces the manual intervention significantly, reduces the labor intensity, improves the production efficiency, and effectively reduces the security risk of manual operation, provides the powerful technical support for the production and processing of PPR pipe fitting. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the structural schematic diagram of the utility model table board;

[0020] Figure 3 It is the structural schematic diagram of the utility model pipe expanding assembly;

[0021] Figure 4 It is the structural schematic diagram of the utility model mounting plate and hollow shaft connection;

[0022] Figure 5 It is the structural schematic diagram of the utility model induction heating ring;

[0023] Figure 6 It is the structural schematic diagram of the utility model bearing assembly;

[0024] Figure 7 It is the structural schematic diagram of the utility model positioning assembly.

[0025] Wherein: 1, base; 2, table board; 3, pipe expanding assembly; 301, sliding table; 302, bearing seat; 303, support block; 304, hollow shaft; 305, mounting plate; 4, bearing assembly; 401, support seat; 402, worm screw elevator; 403, jacking screw; 404, bearing plate; 405, support platform; 406, "V"-shaped clamping groove; 407, material guide roller; 5, PPR pipe; 6, positioning assembly; 601, fixed frame; 602, second drive cylinder; 603, movable plate; 604, third drive cylinder; 605, positioning chuck; 606, non-slip pad; 7, fixed seat; 8, containing bin; 9, movable slot; 10, sliding block; 11, limiting sliding slot; 12, limiting sliding rail; 13, pipe expanding cylinder; 14, movable wedge block; 15, telescopic cylinder; 16, spring; 17, speed reducer motor; 18, motor mounting seat; 19, driving pulley; 20, driven pulley; 21, belt; 22, guide sliding slot; 23, linear sliding rail; 24, first drive cylinder; 25, mounting slot; 26, induction heating ring; 27, first side plate; 28, discharge port; 29, second side plate; 30, feeding cylinder; 31, pushing plate. DETAILED DESCRIPTION

[0026] The utility model will be made further detailed explanation in combination with the drawings.

[0027] Please refer to Figures 1 to 7 To realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0028] A pipe expanding device for PPR pipe fittings, comprising a base 1, wherein the base 1 is provided with a table board 2 above; the table board 2 is provided with a pipe expanding assembly 3 above, wherein the pipe expanding assembly 3 is movably connected with the table board 2; the table board 2 is provided with a bearing assembly 4 on the side away from the pipe expanding assembly 3, wherein the lower end of the bearing assembly 4 is fixedly connected with the table board 2, and the upper end of the bearing assembly 4 is provided with a PPR pipe 5; the bearing assembly 4 is provided with a positioning assembly 6 on one side, wherein the lower end of the positioning assembly 6 is fixedly connected with the table board 2, and the upper end of the positioning assembly 6 is arranged above the PPR pipe 5; the base 1 is provided with a fixed seat 7 near one end of the bearing assembly 4, wherein the fixed seat 7 is provided with a containing bin 8 above; the inner wall of the containing bin 8 is in "V"-shaped structure, and the containing bin 8 is provided with the PPR pipe 5 inside.

[0029] The pipe expanding assembly 3 is designed to be movably connected with the table panel 2, which means that the pipe expanding assembly 3 can be moved on the table panel 2; the pipe expanding assembly 3 internally contains a pipe expanding die for performing the pipe expanding process on the PPR pipe 5; the bearing assembly 4 is fixed on one side above the table panel 2, and its main function is to support and fix the PPR pipe 5 to be expanded, so as to ensure the stability of the PPR pipe 5 during the expanding process; the positioning assembly 6 is located on one side of the bearing assembly 4 and is fixedly connected with the table panel 2; the main function of the positioning assembly 6 is to further fix the PPR pipe 5 to prevent displacement or rotation during the expanding process, thereby improving the accuracy and stability of the expanding; the accommodating bin 8 is arranged at one end of the base 1 close to the bearing assembly 4, and a fixed seat 7 is arranged above the accommodating bin 8 to support the accommodating bin 8; the inner wall of the accommodating bin 8 is in a "V" shape structure, which is helpful for storing and arranging a plurality of PPR pipes 5, and facilitates taking and managing.

[0030] Please refer to Figures 2 to 5 , as an embodiment of the utility model, the pipe expanding assembly 3 includes a sliding table 301, wherein the sliding table 301 is slidably connected with the table panel 2; a bearing seat 302 is arranged above the sliding table 301, wherein the lower end of the bearing seat 302 is fixedly connected with the sliding table 301 through a support block 303; a hollow shaft 304 is installed in the bearing seat 302, wherein the hollow shaft 304 is rotatably connected with the bearing seat 302; an installation plate 305 is arranged at the front end of the hollow shaft 304, wherein the front end of the hollow shaft 304 extends out of the bearing seat 302 and is fixedly connected with the installation plate 305 through a flange.

[0031] In the above-mentioned scheme, the sliding table 301 is the moving basis of the entire pipe expanding assembly 3, and it realizes relative movement with the table panel 2 through sliding connection; the design of the sliding table 301 allows the pipe expanding assembly 3 to move linearly in a specific direction on the table panel 2, so as to adapt to the expanding requirements of PPR pipes 5 at different positions; the bearing seat 302 is fixed above the sliding table 301 and forms a stable connection with the sliding table 301 through the support block 303; the main function of the bearing seat 302 is to support and fix the hollow shaft 304, so as to ensure that the hollow shaft 304 can rotate smoothly inside; the hollow shaft 304 is one of the core components of the pipe expanding assembly 3, which is installed in the bearing seat 302 and is rotatably connected with the bearing seat 302; the design of the hollow shaft 304 allows it to rotate freely in the bearing seat 302, and at the same time, its front end extends out of the bearing seat 302 for connecting the installation plate 305; the main function of the installation plate 305 is to bear and fix the expanding tool, so as to ensure that the expanding tool can accurately act on the PPR pipe 5.

[0032] Please refer to Figure 3 , Figure 4, as an embodiment of the utility model, the installation plate 305 is provided with a movable slot 9 away from one side of the hollow shaft 304, two sliding blocks 10 are symmetrically installed in the movable slot 9; the two sides of the movable slot 9 are respectively provided with a limiting sliding groove 11, and the inner wall of the movable slot 9 is provided with a limiting sliding rail 12 matched with the limiting sliding groove 11; the front end of each of the two sliding blocks 10 is fixedly provided with an expanding tube 13, the expanding tube 13 has a circular truncated cone structure, and the distance between the two expanding tubes 13 is equivalent to the inner diameter of the PPR pipe 5.

[0033] In the above scheme, the installation plate is a key component in the pipe expanding assembly, the installation plate 305 is a key component in the pipe expanding assembly 3, the installation plate 305 is located at the front end of the hollow shaft 304 and is fixedly connected with the hollow shaft 304 through a flange; the movable slot 9 is a long strip-shaped opening provided in one end of the installation plate 305 away from the hollow shaft 304, and is used for accommodating and supporting the sliding block 10; the design of the movable slot 9 allows the sliding block 10 to move relatively in the movable slot 9, so as to adjust the distance between the expanding tubes 13; the sliding block 10 is symmetrically installed in the two components in the movable slot 9, the design of the sliding block 10 allows the sliding block 10 to smoothly slide along the two side walls of the movable slot 9, while maintaining a certain stability and directivity; the limiting sliding groove 11 is provided on the two side walls of the movable slot 9, and the limiting sliding rail 12 on the inner wall of the movable slot 9 is matched with the limiting sliding groove 11, which is used for limiting the movement range and direction of the sliding block 10; the expanding tube 13 is a circular truncated cone structure fixed at the front end of the sliding block 10, and the design of the expanding tube 13 allows the inner diameter of the PPR pipe 5 to gradually expand; the distance between the two expanding tubes 13 is adjusted to be equivalent to the inner diameter of the PPR pipe 5, so as to ensure that the PPR pipe 5 can be closely attached to the inner wall of the PPR pipe 5 during the expanding process; the material and surface treatment of the expanding tube 13 should be selected according to the material of the PPR pipe 5 and the requirements of the expanding process, so as to ensure the quality and efficiency of the expanding.

[0034] Please refer to Figure 4 , as an embodiment of the utility model, the movable slot 9 is provided with a movable wedge 14, the movable wedge 14 is arranged between the two sliding blocks 10; the movable wedge 14 has a trapezoidal structure, and the inclined surfaces arranged on the two sides of the movable wedge 14 respectively abut against the sliding blocks 10; the rear end of the bearing seat 302 is fixedly provided with a telescopic air cylinder 15, the top end of the piston rod of the telescopic air cylinder 15 penetrates through the center hole of the hollow shaft 304 and extends into the movable slot 9; the bottom end of the movable wedge 14 is provided with a connecting bearing (not shown in the figure), and the top end of the piston rod of the telescopic air cylinder 15 is arranged in the connecting bearing; the top end of the piston rod of the telescopic air cylinder 15 is rotationally connected with the movable wedge 14 through the connecting bearing, and the telescopic air cylinder 15 drives the movable wedge 14 to extend and retract through the piston rod.

[0035] In the above scheme, the movable wedge 14 is arranged between the two sliders 10 and located in the movable slot 9 of the mounting plate 305; the movable wedge 14 adopts a trapezoidal structure, and the inclined surfaces arranged on both sides thereof respectively abut against the two sliders 10; this design enables the two sliders 10 to be pushed to move in opposite directions along the two side walls of the movable slot 9 when the movable wedge 14 moves in the horizontal direction, so as to change the distance between the two pipe expanding cylinders 13; the telescopic cylinder 15 is fixedly installed at the rear end of the bearing seat 302, and the top end of the piston rod thereof extends into the movable slot 9 through the center hole of the hollow shaft 304; the bottom end of the movable wedge 14 is provided with a connecting bearing, and the top end of the piston rod of the telescopic cylinder 15 is arranged in the connecting bearing; the top end of the piston rod of the telescopic cylinder 15 is rotationally connected to the movable wedge 14 through the connecting bearing, so that the telescopic cylinder 15 can drive the movable wedge 14 to move in the horizontal direction during the telescopic process; the telescopic cylinder 15 is designed to be able to perform accurate telescopic action according to the control signal, so as to realize accurate control of the position of the movable wedge 14.

[0036] Before the flaring operation is performed, the telescopic cylinder 15 is in the extended state, and the movable wedge 14 is located at the initial position between the two sliders 10; at this time, the distance between the two sliders 10 and the pipe expanding cylinder 13 fixedly installed on the slider 10 is set to a preset value, which is usually matched with the inner diameter of the PPR pipe 5 to be flared; when it is necessary to adjust the distance between the two pipe expanding cylinders 13 to adapt to PPR pipes 5 of different sizes, the control system sends a corresponding control signal to the telescopic cylinder 15; after receiving the signal, the telescopic cylinder 15 starts the telescopic action, so as to drive the top end of the piston rod to move in the movable slot 9; since the top end of the piston rod is rotationally connected to the movable wedge 14, the movement of the piston rod will drive the movable wedge 14 to move in the horizontal direction; with the movement of the movable wedge 14, the inclined surfaces on both sides thereof will respectively push the two sliders 10 to move in opposite directions along the two side walls of the movable slot 9, so as to change the distance between the two pipe expanding cylinders 13; when the distance between the two pipe expanding cylinders 13 is adjusted, the pipe expanding assembly 3 can perform the flaring operation; at this time, the reduction motor 17 is started to drive the hollow shaft 304 to start rotating, and with the rotation of the hollow shaft 304, the mounting plate 305 and the sliders 10, the pipe expanding cylinders 13 and the movable wedge 14 thereon also rotate; under the action of the pipe expanding cylinders 13, the inner diameter of the PPR pipe 5 is gradually expanded until the desired flared size is reached; after the flaring operation is completed, the power system is turned off, so that the hollow shaft 304 stops rotating; then, the control system sends a control signal to the telescopic cylinder 15 again, so that the telescopic cylinder 15 performs the reverse telescopic action to restore the movable wedge 14 to the initial position; with the restoration of the movable wedge 14, the two sliders 10 also return to the initial position, and the distance between the two pipe expanding cylinders 13 returns to the preset value; at this time, the pipe expanding assembly 3 is ready for the next flaring operation.

[0037] By introducing components such as the movable wedge 14 and the telescopic cylinder 15, the technical scheme realizes a flexible and adjustable pipe expanding assembly 3; by accurately controlling the telescopic action of the telescopic cylinder 15, the spacing between the two pipe expanding barrels 13 can be conveniently adjusted to adapt to the pipe expanding operation of PPR pipes 5 of different sizes and requirements; this design not only improves the efficiency and accuracy of pipe expanding, but also enhances the adaptability and flexibility of the pipe expanding assembly 3.

[0038] Please refer to Figure 4 As an embodiment of the utility model, the slider 10 is provided with a spring 16 at the end away from the movable wedge 14, wherein one end of the spring 16 is fixedly connected with the slider 10, and the other end of the spring 16 is fixedly connected with the inner wall of the movable slot 9.

[0039] In the above scheme, the spring 16 is arranged at the end of the slider 10 away from the movable wedge 14, i.e. the other side of the slider 10, wherein one end of the spring 16 is fixedly connected with the slider 10, and the other end is fixedly connected with the inner wall of the movable slot 9; the main function of the spring 16 is to provide a restoring force to ensure that the slider 10 can smoothly return to the initial position after the telescopic cylinder 15 drives the movable wedge 14 to move and adjust the spacing between the two sliders 10 and the pipe expanding barrels 13; when the telescopic cylinder 15 drives the movable wedge 14 to move, the spring 16 will be compressed or stretched to store elastic potential energy; once the telescopic cylinder 15 stops moving and releases the movable wedge 14, the spring 16 will release the elastic potential energy stored therein to drive the slider 10 to move along the two side walls of the movable slot 9 to the initial position.

[0040] When the distance between the two expanding barrels 13 needs to be adjusted, the telescopic cylinder 15 starts the telescopic action, pushes the piston rod top end to move in the movable groove 9, and drives the movable wedge 14 to move in the horizontal direction; with the movement of the movable wedge 14, the inclined surfaces on both sides thereof will respectively push the two sliding blocks 10 to move along the two side walls of the movable groove 9 in opposite directions; in this process, the spring 16 will be compressed or stretched, storing elastic potential energy; when the distance between the two expanding barrels 13 is adjusted, the pipe expanding assembly 3 can carry out the pipe expanding operation; the hollow shaft 304 starts to rotate, and with the rotation of the hollow shaft 304, the mounting plate 305 and the sliding blocks 10, the expanding barrels 13, the movable wedge 14 and the piston rod of the telescopic cylinder 15 thereon also rotate, and under the action of the expanding barrels 13, the inner diameter of the PPR pipe 5 is gradually expanded; after the pipe expanding operation is completed, the power system is closed, and the hollow shaft 304 stops rotating; then, the control system sends a control signal to the telescopic cylinder 15, so that the telescopic cylinder 15 carries out the reverse telescopic action and releases the pushing force on the movable wedge 14; once the telescopic cylinder 15 stops acting and releases the movable wedge 14, the spring 16 will immediately release the elastic potential energy stored therein and push the sliding blocks 10 to move along the two side walls of the movable groove 9 to the initial position; under the action of the spring 16, the two sliding blocks 10 and the expanding barrels 13 will quickly and stably return to the initial position, ready for the next pipe expanding operation.

[0041] Please refer to Figure 3 As an embodiment of the utility model, the bearing seat 302 is provided with a speed reducer motor 17 on one side in parallel, wherein the speed reducer motor 17 is fixedly connected with the sliding table 301 through a motor mounting seat 18; a driving pulley 19 is fixedly installed on the output shaft of the speed reducer motor 17, wherein a driven pulley 20 is fixedly installed on the outer wall of the front end of the hollow shaft 304, and the driven pulley 20 is transmissionally connected with the driving pulley 19 through a belt 21.

[0042] In the above scheme, the speed reducer motor 17 is arranged on one side of the bearing seat 302 and is fixedly connected with the sliding table 301 through the motor mounting seat 18; the main function of the speed reducer motor 17 is to provide a stable and controllable power source for the pipe expanding assembly 3, and the rotation of the output shaft thereof drives the driving pulley and the belt 21 to transmit; the driving pulley 19 is fixedly installed on the output shaft of the speed reducer motor 17 and rotates with the output shaft; the driven pulley 20 is fixedly installed on the outer wall of the front end of the hollow shaft 304 and maintains a certain distance from the driving pulley 19; the driving pulley 19 and the driven pulley 20 are transmissionally connected through the belt 21, and when the driving pulley 19 rotates, the belt 21 and the driven pulley 20 will rotate together.

[0043] When it is necessary to start the pipe expanding assembly 3 to perform the pipe expanding operation, the speed reducer motor 17 is first started, and after receiving the starting signal, the speed reducer motor 17 starts to rotate its output shaft and drives the driving pulley 19 to rotate; with the rotation of the driving pulley 19, the belt 21 is tightly wound between the driving pulley 19 and the driven pulley 20 and moves with the rotation of the driving pulley 19; the movement of the belt 21 drives the driven pulley 20 to rotate, and in turn drives the hollow shaft 304, the mounting plate 305, the sliding block 10, the pipe expanding cylinder 13 and other components on the hollow shaft 304 to rotate; under the action of the pipe expanding cylinder 13, the inner diameter of the PPR pipe 5 is gradually expanded until the desired expanding size is reached; during the entire expanding process, the rotation speed and direction of the hollow shaft 304 can be adjusted by controlling the rotation speed and direction of the speed reducer motor 17; at the same time, the distance between the two pipe expanding cylinders 13 can be changed by adjusting the position of the sliding block 10 to adapt to PPR pipes 5 of different sizes; after the expanding operation is completed, the speed reducer motor 17 can be turned off to stop the rotation of the hollow shaft 304; then, the sliding block 10 and the pipe expanding cylinder 13 can be reset to the initial position by the action of the telescopic cylinder 15 and the spring 16, ready for the next expanding operation.

[0044] Please refer to Figure 2 , Figure 3 , as an embodiment of the utility model, the lower end of the sliding table 301 is symmetrically provided with guide sliding grooves 22, and the upper end of the table plate 2 is symmetrically provided with two straight line sliding rails 23 matched with the guide sliding grooves 22; the first driving cylinder 24 is arranged at the rear end of the table plate 2 close to the sliding table 301, and the piston rod top of the first driving cylinder 24 is fixedly connected with the rear end of the sliding table 301.

[0045] In the above scheme, the sliding table 301 is a movable component for bearing and supporting other parts of the pipe expanding assembly 3; the lower end of the sliding table 301 is symmetrically provided with guide sliding grooves 22, which provide accurate guidance for the movement of the sliding table 301 in the horizontal direction; the upper end of the table plate 2 is symmetrically provided with two straight line sliding rails 23 matched with the guide sliding grooves 22, and the straight line sliding rails 23 are precise linear motion elements that can ensure the sliding table 301 to keep a stable and accurate movement track during the movement; the first driving cylinder 24 is arranged at the rear end of the table plate 2 close to the sliding table 301, and the piston rod top of the first driving cylinder 24 is fixedly connected with the rear end of the sliding table 301; the main function of the first driving cylinder 24 is to provide power to drive the sliding table 301 to move in the horizontal direction along the straight line sliding rails 23.

[0046] Please refer to Figure 2 , Figure 3 and Figure 5, as an embodiment of the utility model, the front end of slide table 301 is provided with mounting groove 25, wherein the mounting groove 25 is provided with induction heating ring 26; the height of induction heating ring 26 is equivalent to the height of PPR pipe 5, wherein the inner diameter of induction heating ring 26 is greater than the diameter of PPR pipe 5.

[0047] In the above scheme, the front end of slide table 301 is specially designed with a mounting groove 25, and the size and shape of the groove are adapted to the installation requirements of induction heating ring 26; induction heating ring 26 is ingeniously arranged in the mounting groove 25 at the front end of slide table 301, and its height is accurately designed to match the height of PPR pipe 5; the inner diameter of induction heating ring 26 is slightly larger than the diameter of PPR pipe 5, so as to ensure that PPR pipe 5 can easily pass through induction heating ring 26 during heating, while maintaining a proper gap to ensure the heating effect; the working principle of induction heating ring 26 is based on electromagnetic induction principle, when induction heating ring 26 is powered, it will generate an alternating magnetic field; when PPR pipe 5 passes through the alternating magnetic field, eddy currents will be generated in the pipe wall, which will generate heat due to resistance, so as to heat and soften PPR pipe 5; wherein the heating process needs to last for a certain period of time to ensure that PPR pipe 5 reaches a sufficient softening degree, facilitating subsequent flaring operation.

[0048] Please refer to Figure 2 、 Figure 6 , as an embodiment of the utility model, the bearing assembly 4 includes support seat 401, wherein the lower end of support seat 401 is fixedly connected with table panel 2; the upper end of support seat 401 is fixedly installed with worm screw elevator 402, wherein the top end of jacking screw 403 of worm screw elevator 402 is fixedly connected with bearing plate 404 through flange; bearing plate 404 is symmetrically installed with supporting table 405 at both ends, wherein "V"-shaped clamping groove 406 is formed in the upper end of supporting table 405; a plurality of material guiding rollers 407 are arranged on the inner side wall of "V"-shaped clamping groove 406, wherein PPR pipe 5 is arranged in "V"-shaped clamping groove 406, and the outer wall of PPR pipe 5 abuts against material guiding roller 407.

[0049] The support seat 401 is the base part of the entire bearing assembly 4, wherein the lower end of the support seat 401 is fixedly connected with the table top plate 2, ensuring the stability and firmness of the entire bearing assembly 4; the worm screw lifter 402 is fixedly installed at the upper end of the support seat 401, wherein the top end of the jacking screw 403 of the worm screw lifter 402 is fixedly connected with the bearing plate 404 through a flange, and when the worm screw lifter 402 works, the jacking screw 403 moves up and down, thereby driving the bearing plate 404 and the components thereon to lift together; the bearing plate 404 is a bridge connecting the worm screw lifter 402 and the support table 405, and moves with the lifting of the jacking screw 403; the bearing plate 404 is designed in consideration of strength and rigidity, and can ensure the stability and safety of the support table 405 and the components such as the PPR pipe 5 installed thereon; the support table 405 is symmetrically installed at the two ends of the bearing plate 404, and is used for supporting and fixing the PPR pipe 5, wherein a “V”-shaped clamping groove 406 is formed at the upper end of the support table 405, and this design can ensure that the PPR pipe 5 can be stably clamped into the clamping groove when placed, avoiding shaking or falling off during lifting or moving; a plurality of material guiding rollers 407 are arranged on the inner side wall of the “V”-shaped clamping groove 406, and these rollers can roll with the movement of the PPR pipe 5, reducing the frictional resistance between the PPR pipe 5 and the clamping groove; the design of the material guiding rollers 407 not only improves the stability of the PPR pipe 5 in the clamping groove, but also makes the PPR pipe 5 more smooth and efficient during lifting or moving.

[0050] Before the flaring operation is performed, the PPR pipe 5 needs to be placed in the “V”-shaped clamping groove 406 of the support table 405, and the outer wall thereof needs to be abutted with the material guiding rollers 407; at the same time, it is necessary to ensure that the worm screw lifter 402 is in the initial position, i.e., the jacking screw 403 is in the lowest position, so as to smoothly put the PPR pipe 5 into the clamping groove; when the height of the PPR pipe 5 needs to be adjusted, the worm screw lifter 402 can be started; the worm screw lifter 402 drives the jacking screw 403 to move up and down, thereby driving the bearing plate 404, the support table 405 and the PPR pipe 5 thereon to lift together; by adjusting the height of the worm screw lifter 402, the position of the PPR pipe 5 can be accurately controlled to meet the requirements of the flaring operation.

[0051] Please refer to Figure 2 , Figure 7, as an embodiment of the utility model, positioning assembly 6 includes fixed frame 601, wherein fixed frame 601 lower end is fixedly connected with table panel 2;Fixed frame 601 top is horizontally provided with second drive cylinder 602, wherein the piston rod top end of second drive cylinder 602 extends towards the side of bearing plate 404;The piston rod top end of second drive cylinder 602 is fixedly installed with movable plate 603, wherein movable plate 603 is vertically installed with third drive cylinder 604 on the side away from second drive cylinder 602;The piston rod top end of third drive cylinder 604 is fixedly connected with positioning chuck 605, wherein positioning chuck 605 is arranged above bearing plate 404;Positioning chuck 605 is " V " shape structure, wherein the inner wall of positioning chuck 605 is equipped with antiskid pad 606.

[0052] In the above scheme, fixed frame 601 is the basic part of the whole positioning assembly 6, wherein the lower end of fixed frame 601 is fixedly connected with table panel 2, ensuring the stability and firmness of positioning assembly 6;Second drive cylinder 602 is horizontally arranged above fixed frame 601, and the piston rod top end thereof extends towards the side of bearing plate 404;The main function of second drive cylinder 602 is to provide power to push movable plate 603 to move in the horizontal direction;Movable plate 603 is fixedly installed on the piston rod top end of second drive cylinder 602 and moves with the extension and contraction of second drive cylinder 602;The design of movable plate 603 considers strength and rigidity, which can ensure the stability and safety of the third drive installed thereon;Third drive cylinder 604 is vertically installed on the side of movable plate 603 away from second drive cylinder 602, and the main function of third drive cylinder 604 is to provide power to push positioning chuck 605 to move in the vertical direction, thereby realizing clamping and releasing of PPR pipe 5;Positioning chuck 605 is fixedly connected to the piston rod top end of third drive cylinder 604, wherein positioning chuck 605 is " V " shape structure, which can ensure close contact with the outer wall of PPR pipe 5 and provide stable clamping force;The inner wall of positioning chuck 605 is provided with antiskid pad 606 to increase the friction between PPR pipe 5 and prevent PPR pipe 5 from sliding or falling off during clamping.

[0053] Before the flaring operation, the PPR pipe 5 needs to be placed on the support table 405 of the bearing plate 404 and ensure its position is correct; at the same time, it is necessary to ensure that the second drive cylinder 602 and the third drive cylinder 604 are in the initial position, that is, the piston rod is in the retracted state; when it is necessary to adjust the position of the positioning chuck 605 to clamp the PPR pipe 5, the second drive cylinder 602 can be started; the second drive cylinder 602 will push the movable plate 603 to move in the horizontal direction, thereby driving the third drive cylinder 604 and the positioning chuck 605 to move to the required position together; by adjusting the extension amount of the second drive cylinder 602, the horizontal position of the positioning chuck 605 can be accurately controlled; when the positioning chuck 605 reaches the required position, the third drive cylinder 604 can be started; the third drive cylinder 604 will push the positioning chuck 605 to move downward in the vertical direction until the anti-slip pad 606 on the inner wall of the positioning chuck 605 tightly fits the outer wall of the PPR pipe 5; at this time, the positioning chuck 605 will provide sufficient clamping force to ensure that the PPR pipe 5 remains stable during the subsequent flaring operation; after the positioning chuck 605 clamps the PPR pipe 5, other parts of the pipe expanding assembly 3 can be started to perform the flaring operation.

[0054] Please refer to Figure 1 , as an embodiment of the utility model, the material guide groove is arranged at the bottom of the inner cavity of the accommodating bin 8 along the length direction, wherein the first side plate 27 of the accommodating bin 8 is provided with the discharge port 28 below the first side plate 27, and the discharge port 28 is communicated with the material guide groove; the second side plate 29 of the accommodating bin 8 is provided with the feeding cylinder 30 below the second side plate 29, wherein the feeding cylinder 30 is arranged on the outer wall of the second side plate 29; the cylinder body of the feeding cylinder 30 is fixedly connected with the second side plate 29, wherein the piston rod top end of the feeding cylinder 30 penetrates through the second side plate 29 and extends into the material guide groove; the piston rod top end of the feeding cylinder 30 is fixedly installed with the material pushing plate 31, wherein the material pushing plate 31 is in the circular truncated cone structure, and the diameter of the material pushing plate 31 is greater than the inner diameter of the PPR pipe 5.

[0055] In the above scheme, the accommodating bin 8 is a component for storing and conveying the PPR pipe 5, and the inner cavity bottom of the accommodating bin 8 is provided with a material guiding groove along the length direction; the design of the material guiding groove helps to guide the arrangement and movement of the PPR pipe 5 in the accommodating bin 8, and ensures the smoothness and efficiency of the feeding process; the first side plate 27 of the accommodating bin 8 is provided with a discharge port 28 below the first side plate 27 close to one end of the table panel 2, and the discharge port 28 is communicated with the material guiding groove and allows the PPR pipe 5 to be discharged from the accommodating bin 8 during the feeding process; the feeding cylinder 30 is arranged below the second side plate 29 away from the discharge port 28 of the accommodating bin 8, and the cylinder body of the feeding cylinder 30 is fixedly connected with the second side plate 29, so as to ensure the stability and firmness of the feeding cylinder 30; the piston rod top end of the feeding cylinder 30 penetrates through the second side plate 29 and extends into the material guiding groove, so that the movement of the piston rod can directly act on the PPR pipe 5 in the material guiding groove; the pushing plate is fixedly installed at the piston rod top end of the feeding cylinder 30, and the shape of the pushing plate is a circular truncated cone structure, wherein the diameter of the pushing plate is greater than the inner diameter of the PPR pipe 5; such design can ensure that the pushing plate can tightly fit and push the PPR pipe 5 during the movement; the design of the circular truncated cone structure also helps to reduce the frictional resistance between the pushing plate and the PPR pipe 5, so that the feeding process is more smooth.

[0056] DETAILED DESCRIPTION, it should be understood by those skilled in the art that these are only illustrative, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A flaring device for PPR pipe fittings, comprising a base (1), wherein a platform (2) is provided above the base (1); characterized in that, A tube expansion assembly (3) is provided above the table panel (2), wherein the tube expansion assembly (3) is movably connected to the table panel (2); a support assembly (4) is provided on the side of the table panel (2) away from the tube expansion assembly (3), wherein the lower end of the support assembly (4) is fixedly connected to the table panel (2), and a PPR tube (5) is provided on the upper end of the support assembly (4); a positioning assembly (6) is provided on one side of the support assembly (4), wherein the lower end of the positioning assembly (6) is fixedly connected to the table panel (2), and the upper end of the positioning assembly (6) is positioned above the PPR tube (5); a fixed seat (7) is provided on the end of the base (1) near the support assembly (4), wherein a receiving compartment (8) is provided above the fixed seat (7); the inner wall of the receiving compartment (8) has a "V" shaped structure, wherein a PPR tube (5) is provided inside the receiving compartment (8).

2. The flaring device for a PPR pipe fitting according to claim 1, characterized in that, The expansion assembly (3) includes a slide (301), wherein the slide (301) is slidably connected to the table panel (2); a bearing seat (302) is provided above the slide (301), wherein the lower end of the bearing seat (302) is fixedly connected to the slide (301) through a support block (303); a hollow shaft (304) is installed inside the bearing seat (302), wherein the hollow shaft (304) is rotatably connected to the bearing seat (302); a mounting plate (305) is provided at the front end of the hollow shaft (304), wherein the front end of the hollow shaft (304) extends out of the bearing seat (302) and is fixedly connected to the mounting plate (305) through a flange.

3. The flaring device for a PPR pipe fitting according to claim 2, characterized in that, The mounting plate (305) has a movable groove (9) on the side away from the hollow shaft (304), in which two sliders (10) are symmetrically installed; the sliders (10) have limit grooves (11) on the two side walls near the movable groove (9), and the inner side wall of the movable groove (9) is provided with a limit rail (12) that matches the limit groove (11); the front ends of the two sliders (10) are respectively fixedly installed with expansion tubes (13), in which the expansion tubes (13) have a frustum structure, and the distance between the two expansion tubes (13) is equivalent to the inner diameter of the PPR pipe (5).

4. The flaring device for a PPR pipe fitting according to claim 3, characterized in that, The movable groove (9) is provided with a movable wedge (14), which is located between two sliders (10). The movable wedge (14) has a trapezoidal structure, and the inclined surfaces on both sides of the movable wedge (14) abut against the sliders (10). A telescopic cylinder (15) is fixedly installed at the rear end of the bearing seat (302), and the top of the piston rod of the telescopic cylinder (15) passes through the central hole of the hollow shaft (304) and extends into the movable groove (9). A connecting bearing is installed at the bottom of the movable wedge (14), and the top of the piston rod of the telescopic cylinder (15) is located in the connecting bearing. The top of the piston rod of the telescopic cylinder (15) is rotatably connected to the movable wedge (14) through the connecting bearing, and the telescopic cylinder (15) drives the movable wedge (14) to extend and retract through the piston rod.

5. The flaring device for a PPR pipe fitting according to claim 4, characterized in that, A spring (16) is provided at the end of the slider (10) away from the movable wedge (14), wherein one end of the spring (16) is fixedly connected to the slider (10), and the other end of the spring (16) is fixedly connected to the inner wall of the movable groove (9).

6. The flaring device for a PPR pipe fitting according to claim 2, characterized in that, A geared motor (17) is arranged side by side on one side of the bearing housing (302), wherein the geared motor (17) is fixedly connected to the slide table (301) through the motor mounting seat (18); a drive pulley (19) is fixedly installed on the output shaft of the geared motor (17), wherein a driven pulley (20) is fixedly installed on the outer wall of the front end of the hollow shaft (304), and the driven pulley (20) and the drive pulley (19) are connected by a belt (21).

7. A flaring device for PPR pipe fittings according to claim 6, characterized in that, The slide table (301) has symmetrical guide grooves (22) on both sides of its lower end. The upper end of the table panel (2) is symmetrically equipped with two linear slide rails (23) that are compatible with the guide grooves (22). The table panel (2) is provided with a first drive cylinder (24) near the rear end of the slide table (301). The top end of the piston rod of the first drive cylinder (24) is fixedly connected to the rear end of the slide table (301).

8. The flaring device for a PPR pipe fitting according to claim 7, characterized in that, The slide (301) has a mounting groove (25) at its front end, and an induction heating ring (26) is provided in the mounting groove (25); the height of the induction heating ring (26) is equivalent to the height of the PPR pipe (5), and the inner diameter of the induction heating ring (26) is greater than the diameter of the PPR pipe (5).

9. A flaring device for PPR pipe fittings according to claim 1, characterized in that, The bearing assembly (4) includes a support base (401), wherein the lower end of the support base (401) is fixedly connected to the table panel (2); a worm gear screw jack (402) is fixedly installed on the upper end of the support base (401), wherein the top end of the lifting screw (403) of the worm gear screw jack (402) is fixedly connected to a bearing plate (404) through a flange; a support platform (405) is symmetrically installed at both ends of the bearing plate (404), wherein a "V" shaped groove (406) is opened on the upper end of the support platform (405); multiple sets of guide rollers (407) are provided on the inner side wall of the "V" shaped groove (406), wherein a PPR pipe (5) is provided in the "V" shaped groove (406), and the outer wall of the PPR pipe (5) abuts against the guide roller (407).

10. A flaring device for a PPR pipe fitting according to claim 1, characterized in that, The positioning component (6) includes a fixing frame (601), wherein the lower end of the fixing frame (601) is fixedly connected to the table panel (2); a second driving cylinder (602) is horizontally arranged above the fixing frame (601), wherein the top end of the piston rod of the second driving cylinder (602) extends toward the side of the support plate (404); a movable plate (603) is fixedly installed on the top end of the piston rod of the second driving cylinder (602), wherein a third driving cylinder (604) is vertically installed on the side of the movable plate (603) away from the second driving cylinder (602); a positioning chuck (605) is fixedly connected to the top end of the piston rod of the third driving cylinder (604), wherein the positioning chuck (605) is arranged above the support plate (404); the positioning chuck (605) has a "V" shaped structure, wherein the inner wall of the positioning chuck (605) is provided with an anti-slip pad (606).

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