A welding device for a three-way pipe in use

Abstract

The present invention discloses a welding device for use in a three-way pipe, the present invention relates to the technical field of three-way pipe connection, comprising a center block, wherein three end faces of the center block are fixedly connected with one end of a first universal joint, and the other end of the first universal joint is fixedly connected with one end of a second universal joint. The advantages of the present invention are that the three openings of the three-way pipe can be adjusted synchronously with the three connecting pipes without repeating three times, which not only shortens the welding time of the three-way pipe, saves time and labor, but also avoids the deviation of the central axis of the three-way pipe around one of its openings, so that the three-way pipe can be accurately aligned, and at the same time, the welding size of the three-way pipe can be adjusted according to the outer diameters of different connecting pipes, so that the three-way pipe can be exactly matched when welding, thereby optimizing the welding effect, and the central axis of the three-way pipe opening and the central axis of the connecting pipe can be coincided to determine the welding size of the three-way pipe at the same time, without the need for independent control of the control element, which not only reduces the cost and reduces the risk of device damage, but also avoids the difficulty of wiring.

Description

Technical Field

[0001] The invention relates to the technical field of three-way pipe connection, in particular to a welding device for a three-way pipe in use. Background Art

[0002] A pipe joint with three openings is called a tee. Tee pipes are widely used in pipe networks for transporting liquids and gases. Due to different transport media, the materials of tee pipes are divided into: cast iron, cast steel, cast copper, cast aluminum, plastic and glass. When connecting plastic tee pipes, the joints need to be hot-melt treated. Existing tee water pipes generally do not have fixing devices during hot-melt welding, which can easily cause the axes of the two tee water pipes to be difficult to be in a straight line, which will cause the two tee water pipes to tilt after hot-melting, and the welding joints of the tilted tee water pipes are prone to cracking, which can cause damage to the tee water pipes.

[0003] After searching, Chinese patent number CN218197056U discloses a hot-melt three-way hot water pipe connection device. Although it can make the axes of two three-way water pipes on the same straight line, it can only fix one opening of the three-way pipe at a time, which not only makes the welding time of the three-way pipe too long and needs to be repeated three times, which is time-consuming and labor-intensive, but also easily causes the central axis of the three-way pipe to shift around its one opening, making it easy for the welding of the three-way pipe to be misaligned. At the same time, the welding size of the three-way pipe cannot be adjusted according to the outer diameters of different connecting pipes, making it impossible for the three-way pipe to fit exactly when welding, affecting the welding effect. At the same time, the welding size cannot be determined while aligning the central axis, and the control element needs to be independently controlled to achieve it, which not only increases the cost and increases the risk of damage to the device, but also brings difficulties to wiring. Summary of the invention

[0004] The purpose of the present invention is to provide a welding device for a three-way pipe in use.

[0005] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions: a welding device for a three-way pipe, comprising a center block, one end of a first universal joint is fixedly connected to the three end faces of the center block, one end of a second universal joint is fixedly connected to the other end of the first universal joint, the other end of the second universal joint is fixedly connected to a cross bar, a strap is installed on one side of the cross bar, a sliding cavity is opened on the other side of the cross bar, a slider is slidably sleeved in the sliding cavity, one end of a connecting rod is fixedly connected to the side wall of the slider, and the other end of the connecting rod is fixedly connected to a first moving block;

[0006] The end of the first moving block is rotatably connected to one end of a swing rod, and the other end of the swing rod is slidably sleeved with a connecting block, the outer surface of the connecting block is fixedly connected to a fixing ring, and a motor is installed on the side wall of the connecting block, one end of a transmission shaft is fixedly connected to the output end of the motor, and the other end of the transmission shaft is fixedly connected to a driving gear, the outer surface of the driving gear is meshedly connected to a driven gear ring, the inner surface of the driven gear ring is fixedly sleeved with a collar, and the outer surface of the collar is fixedly connected to one end of a shift rod, and the other end of the shift rod is rotatably sleeved with a driving bevel gear, and the outer surface of the driving bevel gear is meshedly connected to a first driven bevel gear and a second driven bevel gear, A bidirectional screw is fixedly connected to the central axis of the first driven bevel gear, one end of a rotating rod is fixedly connected to the central axis of the second driven bevel gear, the other end of the rotating rod is fixedly connected to a driving roller, the outer surface of the driving roller is slidably sleeved with one end of a track, the other end of the track is slidably sleeved with a driven roller, a worm is fixedly connected to the central axis of the driven roller, the outer surface of the worm is meshingly connected with a worm wheel, a screw is slidably sleeved on the central axis of the worm wheel, an embedding groove is provided on the external thread of the screw, and one side of a splint is rotatably connected to the end face of the screw, one end of a pressure rod is fixedly connected to the other side of the splint, and the other end of the pressure rod is fixedly connected to a stop rod.

[0007] As a further solution of the present invention: the central axes of the three end faces of the central block are perpendicular to each other, the straps are adhered by Velcro, the cross-section of the sliding cavity is T-shaped, the connecting rod is slidably connected to the cross bar, three cross bars are provided, and the cross bars correspond to the end faces of the central block one by one.

[0008] As a further solution of the present invention: the screw is meshingly sleeved with the fixed ring, the inner surface of the worm wheel is fixed with a strip, the strip is slidably sleeved with the groove, the driven roller, worm and worm wheel are all located in the fixed ring, and the clamp is slidably connected to the side wall of the fixed ring.

[0009] As a further solution of the present invention: a plurality of the splints are provided, and the plurality of splints are evenly distributed about the central axis of the fixed ring, the rotating rod is rotatably sleeved with the sleeve ring, the active roller and the first driven bevel gear are rotatably connected with the inner surface of the connecting block, and the shifting rod and the active bevel gear are rotatably sleeved with the connecting block.

[0010] As a further solution of the present invention: a fixing rod is fixedly connected to the end face of the connecting block, the fixing rod is rotatably sleeved with the bidirectional screw rod, and a support plate is fixedly sleeved on the outer surface of the fixing rod, one end of the top rod is slidably connected to the side wall of the support plate, and the other end of the top rod is slidably connected to the heating shaping sleeve, both ends of the bidirectional screw rod are meshingly sleeved with a second moving block, one end of a first arm rod is hinged on the side wall of the second moving block, the other end of the first arm rod is hinged to one end of the top block, the other end of the top block is hinged to one end of the second arm rod, the other end of the second arm rod is hinged to the fixing rod, and the outer surface of the top block is slidably connected to the top plate.

[0011] As a further solution of the present invention: there are multiple top plates, and the multiple top plates are evenly distributed about the central axis of the fixed rod, the first arm rod, the top block and the second arm rod are each provided with two groups, and the two groups of first arms, the two groups of top blocks and the two groups of second arms are all symmetrically arranged about the bisector of the top plate.

[0012] As a further solution of the present invention: a plurality of heating and shaping sleeves are provided, and the outer diameters of the plurality of heating and shaping sleeves are increased in sequence, and the plurality of heating and shaping sleeves are mutually sleeved, and the central axis of the fixing rod coincides with the central axis of the fixing ring.

[0013] As a further solution of the present invention: the pressure rod and the stop rod are both slidably connected to the support plate, and the side wall of the pressure rod end is arranged in an arc surface, the support plate is arranged in a trident shape, and the clamping plate pushes the top rod to separate from the support plate through the pressure rod and the stop rod.

[0014] Adopting the above technical solution: Compared with the prior art, the beneficial effects of the present invention are:

[0015] The present invention drives the worm wheel to rotate by the worm on the driven roller, so that the embedded strip on the worm wheel cooperates with the embedded groove to drive the screw to rotate, and the screw is meshed and sleeved with the fixing ring, so that the screw rotates and moves centripetally, so that the clamp on the screw clamps the outer surface of the connecting pipe, so that the central axis of the connecting pipe coincides with the central axis of the fixing ring, and the central axis of the fixing rod coincides with the central axis of the fixing ring, which indirectly makes the central axis of the connecting pipe coincide with the central axis of the opening of the three-way pipe, and the three openings of the three-way pipe can be adjusted synchronously with the three connecting pipes without repeating three times, which not only shortens the welding time of the three-way pipe, saving time and labor, but also avoids the deviation of the central axis of the three-way pipe around one of its openings, so that the three-way pipe can be accurately aligned.

[0016] The present invention squeezes the end of the push rod through the arc surface of the end of the pressure rod, so that the push rod is pressed and translated until the push rod is separated from the support plate, so that the support plate no longer supports the corresponding heating and shaping sleeve, so that the heating and shaping sleeve that is larger than the outer diameter of the connecting pipe cannot melt and expand the opening of the three-way pipe. When the connecting pipe is clamped and fixed, the effective welding diameter of the heating and shaping sleeve is the same as the outer diameter of the connecting pipe. At this time, the slider is pushed again to make the heating and shaping sleeve contact with the inner surface of the opening of the three-way pipe, and gradually melt and expand the opening of the three-way pipe with heating and squeezing, so that the three-way pipe and the connecting pipe can be finally welded, so that the welding size of the three-way pipe can be adjusted according to the outer diameters of different connecting pipes, so that the three-way pipes can be exactly matched when welded, thereby optimizing the welding effect.

[0017] The central axis of the opening of the tee pipe of the present invention and the central axis of the connecting pipe can coincide and determine the welding size of the tee pipe, without the need for independent control of the control element, which not only reduces costs and the risk of device damage, but also avoids the difficulty of wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a welding device in use of a three-way pipe of the present invention;

[0019] Figure 2 This is a schematic diagram of the central block structure in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the rotating rod structure in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a bidirectional screw rod structure in an embodiment of the present invention;

[0022] Figure 5 In the embodiment of the present invention Figure 4 A magnified view of the structure of part A;

[0023] Figure 6 In the embodiment of the present invention Figure 4 A magnified view of the structure of part B;

[0024] Figure 7 It is a cross-sectional view of a heating and shaping sleeve in an embodiment of the present invention;

[0025] Figure 8 is a cross-sectional view of a fixing rod in an embodiment of the present invention;

[0026] Fig. 9 In the embodiment of the present invention Figure 8 Enlarged view of the structure of part C in the middle.

[0027] In the figure: 1, center block; 2, first universal joint; 3, second universal joint; 4, cross bar; 5, strap; 6, sliding cavity; 7, slider; 8, connecting rod; 9, first moving block; 10, swing rod; 11, connecting block; 12, fixing ring; 13, motor; 14, transmission shaft; 15, driving gear; 16, driven gear ring; 17, collar; 18, lever; 19, driving helical gear; 20, first driven helical gear; 21, second driven Bevel gear; 22, bidirectional lead screw; 23, rotating rod; 24, driving roller; 25, crawler track; 26, driven roller; 27, worm; 28, worm wheel; 29, screw; 30, embedded groove; 31, clamping plate; 32, pressure rod; 33, stop rod; 34, fixing rod; 35, support plate; 36, push rod; 37, heating shaping sleeve; 38, second moving block; 39, first arm; 40, push block; 41, second arm; 42, push plate. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0029] See also Figure 1-Figure 3 The present invention provides a technical solution: a welding device for a three-way pipe, comprising a center block 1, one end of a first universal joint 2 is fixedly connected to the three end faces of the center block 1, the other end of the first universal joint 2 is fixedly connected to one end of a second universal joint 3, the other end of the second universal joint 3 is fixedly connected to a cross bar 4, a strap 5 is installed on one side of the cross bar 4, a sliding cavity 6 is opened on the other side of the cross bar 4, a slider 7 is slidably sleeved in the sliding cavity 6, one end of a connecting rod 8 is fixedly connected to the side wall of the slider 7, and the other end of the connecting rod 8 is fixedly connected to a first moving block 9.

[0030] See also Figure 1 and Figure 3 The central axes of the three end faces of the central block 1 are perpendicular to each other, the straps 5 are adhered by Velcro, the cross section of the sliding cavity 6 is T-shaped, the connecting rod 8 is slidably connected to the cross bar 4, three cross bars 4 are provided, and the cross bars 4 correspond to the end faces of the central block 1 one by one.

[0031] Specifically, in the process of adjusting the tee and the connecting pipe, the center block 1 is fitted with the tee, and then the cross bar 4 is moved so that the cross bar 4 fits with the outer surface of the opening of the tee, and at the same time, the cross bar 4 is parallel to the central axis of the opening of the tee. At this time, the cross bar 4 is fixed to the tee by the binding band 5, so that the tee is initially stable, and then the slider 7 is manually pushed so that the connecting rod 8 on the slider 7 drives the first moving block 9 to translate, so that the first moving block 9 drives the connecting block 11 to translate through the swing rod 10, so that the fixing rod 34 on the connecting block 11 is inserted into the opening of the tee, and then the top plate 42 is inserted into the opening of the tee, and then the outer tee is fixed. The connecting pipe is placed between the clamping plates 31, and the motor 13 is started, so that the transmission shaft 14 on the motor 13 drives the driving gear 15 to rotate, so that the driven gear ring 16 meshing with the driving gear 15 drives the collar 17 to rotate, so that the lever 18 on the collar 17 drives the driving bevel gear 19 to revolve, so that the first driven bevel gear 20 and the second driven bevel gear 21 meshing with the driving bevel gear 19 rotate, and then the bidirectional screw rod 22 on the first driven bevel gear 20 rotates, so that the second moving blocks 38 at both ends of the bidirectional screw rod 22 move back to back, so that the horizontal distance between the second moving block 38 and the second arm 41 is shortened, so that The first arm 39 and the second arm 41 gradually come together and arch the top block 40, so that the top block 40 slides and pushes the top plate 42 to make centrifugal movement, so that the top plate 42 squeezes the inner surface of the opening of the tee, so as to fix the tee again and make the central axis of the tee opening coincide with the central axis of the fixing rod 34. At the same time as the above movement, the rotation of the second driven helical gear 21 will drive the rotating rod 23 to rotate, so that the driving roller 24 on the rotating rod 23 drives the driven roller 26 to rotate through the crawler 25, so that the worm 27 on the driven roller 26 drives the worm wheel 28 to rotate, so that the embedded strip on the worm wheel 28 cooperates with the embedded groove 30 with The movable screw 29 rotates, and the screw 29 meshes and sleeves with the fixed ring 12, so that the screw 29 rotates and moves centripetally at the same time, so that the clamping plate 31 on the screw 29 clamps the outer surface of the connecting pipe, so that the central axis of the connecting pipe coincides with the central axis of the fixed ring 12, and the central axis of the fixing rod 34 coincides with the central axis of the fixed ring 12, which indirectly makes the central axis of the connecting pipe coincide with the central axis of the opening of the tee, and the three openings of the tee can be adjusted synchronously with the three connecting pipes without repeating three times, which not only shortens the welding time of the tee, saves time and effort, but also avoids the deviation of the central axis of the tee around one of its openings, so that the tee can be accurately aligned. Example

[0032] See also Figure 1-Figure 6The present invention provides a technical solution: a welding device for a three-way pipe, wherein the end of a first moving block 9 is rotatably connected to one end of a swing rod 10, and the other end of the swing rod 10 is slidably sleeved with a connecting block 11, and a fixing ring 12 is fixedly connected to the outer surface of the connecting block 11, and a motor 13 is installed on the side wall of the connecting block 11, and one end of a transmission shaft 14 is fixedly connected to the output end of the motor 13, and a driving gear 15 is fixedly connected to the other end of the transmission shaft 14, and the outer surface of the driving gear 15 is meshedly connected to a driven gear ring 16, and a collar 17 is fixedly sleeved on the inner surface of the driven gear ring 16, and one end of a shifting rod 18 is fixedly connected to the outer surface of the collar 17, and the other end of the shifting rod 18 is rotatably sleeved with a driving bevel gear 19, and the outer surface of the driving bevel gear 19 is meshedly connected to a first driven bevel gear 20 and the second driven bevel gear 21, a bidirectional screw 22 is fixedly connected to the central axis of the first driven bevel gear 20, one end of a rotating rod 23 is fixedly connected to the central axis of the second driven bevel gear 21, a driving roller 24 is fixedly connected to the other end of the rotating rod 23, one end of a track 25 is slidably sleeved on the outer surface of the driving roller 24, a driven roller 26 is slidably sleeved on the other end of the track 25, a worm 27 is fixedly connected to the central axis of the driven roller 26, a worm wheel 28 is meshingly connected to the outer surface of the worm 27, a screw 29 is slidably sleeved on the central axis of the worm wheel 28, an embedding groove 30 is provided on the external thread of the screw 29, and one side of a splint 31 is rotatably connected to the end face of the screw 29, one end of a pressure rod 32 is fixedly connected to the other side of the splint 31, and a stop rod 33 is fixedly connected to the other end of the pressure rod 32.

[0033] See also Figure 3 and Figure 6 The screw 29 is meshed and sleeved with the fixed ring 12, the inner surface of the worm wheel 28 is fixed with a strip, the strip is slidably sleeved with the embedding groove 30, the driven roller 26, the worm 27 and the worm wheel 28 are all located in the fixed ring 12, and the clamping plate 31 is slidably connected to the side wall of the fixed ring 12.

[0034] See also Figure 3 and Figure 4 A plurality of splints 31 are provided, and the plurality of splints 31 are evenly distributed about the central axis of the fixing ring 12, the rotating rod 23 is rotatably sleeved with the sleeve ring 17, the driving roller 24 and the first driven bevel gear 20 are both rotatably connected with the inner surface of the connecting block 11, and the shifting rod 18 and the driving bevel gear 19 are both rotatably sleeved with the connecting block 11.

[0035] Specifically, in the process of clamping the connecting tube by the clamping plate 31, the pressure rod 32 on the clamping plate 31 will move centripetally synchronously, so that the arc-shaped surface at the end of the pressure rod 32 squeezes the end of the push rod 36, so that the push rod 36 is pressed and translated until the push rod 36 is separated from the support plate 35, so that the support plate 35 no longer supports the corresponding heating shaping sleeve 37, so that the heating shaping sleeve 37 that is larger than the outer diameter of the connecting tube cannot melt and expand the opening of the tee. When the connecting tube is clamped and fixed, the effective welding diameter of the heating shaping sleeve 37 is the same as the outer diameter of the connecting tube. At this time, the slider 7 is pushed again to make the heating shaping sleeve 37 contact with the inner surface of the opening of the tee, and gradually melt and expand the opening of the tee with heating and extrusion, so that the tee and the connecting tube can be finally welded, so that the welding size of the tee can be adjusted according to the outer diameter of different connecting tubes, so that the tee can fit exactly when welding, thereby optimizing the welding effect. Example

[0036] See also Figure 1 and Figure 7-Figure 9 The present invention provides a technical solution: a welding device for a three-way pipe in use, a fixing rod 34 is fixedly connected to the end surface of the connecting block 11, the fixing rod 34 is rotatably sleeved with the bidirectional screw rod 22, and a support plate 35 is fixedly sleeved on the outer surface of the fixing rod 34, one end of a push rod 36 is slidably connected to the side wall of the support plate 35, and the other end of the push rod 36 is slidably connected to a heating shaping sleeve 37, and both ends of the bidirectional screw rod 22 are meshedly sleeved with a second moving block 38, one end of a first arm rod 39 is hinged on the side wall of the second moving block 38, the other end of the first arm rod 39 is hinged to one end of a top block 40, the other end of the top block 40 is hinged to one end of a second arm rod 41, the other end of the second arm rod 41 is hinged to the fixing rod 34, and the outer surface of the top block 40 is slidably connected to a top plate 42.

[0037] See also Figure 2 and Figure 8 There are multiple top plates 42, and the multiple top plates 42 are evenly distributed about the central axis of the fixed rod 34, and there are two groups of first arm rods 39, top blocks 40 and second arm rods 41, and the two groups of first arm rods 39, the two groups of top blocks 40 and the two groups of second arm rods 41 are symmetrically arranged about the bisecting plane of the top plate 42.

[0038] See also Figure 2 and Figure 7 A plurality of heating and shaping sleeves 37 are provided, and the outer diameters of the plurality of heating and shaping sleeves 37 are increased in sequence, and the plurality of heating and shaping sleeves 37 are sleeved with each other, and the central axis of the fixing rod 34 coincides with the central axis of the fixing ring 12 .

[0039] See also Figure 7The pressure rod 32 and the stop rod 33 are both slidably connected to the support plate 35, and the side wall of the end of the pressure rod 32 is set in an arc surface, the support plate 35 is set in a trident shape, and the clamping plate 31 pushes the top rod 36 to separate from the support plate 35 through the pressure rod 32 and the stop rod 33.

[0040] Specifically, in the process of coinciding the central axis of the tee opening with the central axis of the connecting pipe, the welding size of the tee can be determined by the pressure rod 32 at the same time, without the need for independent control of the control element, which not only reduces costs and the risk of damage to the device, but also avoids the difficulty of wiring.

[0041] The working principle and use process of the present invention are as follows: when a tee is needed in the pipe network connection, the center block 1 is fitted with the tee, and then the cross bar 4 is moved so that the cross bar 4 fits with the outer surface of the opening of the tee, and at the same time, the cross bar 4 is parallel to the central axis of the opening of the tee. At this time, the cross bar 4 is fixed to the tee by the binding belt 5, so that the tee is initially stable, and then the slider 7 is manually pushed so that the connecting rod 8 on the slider 7 drives the first moving block 9 to translate, so that the first moving block 9 drives the connecting block 11 to translate through the swing rod 10, so that the fixing rod 34 on the connecting block 11 is inserted into the opening of the tee, and then the top plate 42 is inserted into the opening of the tee. At this time, the connecting pipe outside the tee is placed between the clamping plates 31, and the motor 13 is started so that the transmission shaft 14 on the motor 13 drives the driving gear 15 to rotate, so that the connecting pipe connected to the main The driven gear ring 16 meshing with the driven gear 15 drives the collar 17 to rotate, so that the lever 18 on the collar 17 drives the active bevel gear 19 to revolve, so that the first driven bevel gear 20 and the second driven bevel gear 21 meshing with the active bevel gear 19 rotate, and then the bidirectional screw rod 22 on the first driven bevel gear 20 rotates, so that the second moving blocks 38 at both ends of the bidirectional screw rod 22 move back to back, so that the horizontal distance between the second moving block 38 and the second arm 41 is shortened, so that the first arm 39 and the second arm 41 gradually get closer, and the top block 40 is arched, so that the top block 40 slides and pushes the top plate 42 to do centrifugal movement, so that the top plate 42 squeezes the inner surface of the tee opening, so as to fix the tee again, and make the central axis of the tee opening coincide with the central axis of the fixing rod 34;

[0042] At the same time as the above movement, the rotation of the second driven helical gear 21 will drive the rotating rod 23 to rotate, so that the driving roller 24 on the rotating rod 23 drives the driven roller 26 to rotate through the crawler 25, so that the worm 27 on the driven roller 26 drives the worm wheel 28 to rotate, so that the strip on the worm wheel 28 cooperates with the groove 30 to drive the screw 29 to rotate, and the screw 29 is meshed with the fixing ring 12, so that the screw 29 rotates and moves centripetally, so that the clamping plate on the screw 29 31 clamps the outer surface of the connecting pipe so that the central axis of the connecting pipe coincides with the central axis of the fixing ring 12, and the central axis of the fixing rod 34 coincides with the central axis of the fixing ring 12, which indirectly makes the central axis of the connecting pipe coincide with the central axis of the opening of the tee, and the three openings of the tee can be adjusted synchronously with the three connecting pipes without repeating three times, which not only shortens the welding time of the tee, saves time and labor, but also avoids the deviation of the central axis of the tee around one of its openings, so that the tee can be accurately aligned;

[0043] When the clamping plate 31 is used to clamp the connecting pipe, the pressure rod 32 on the clamping plate 31 will move centripetally synchronously, so that the arc surface at the end of the pressure rod 32 squeezes the end of the push rod 36, so that the push rod 36 is pressed and translated until the push rod 36 is separated from the support plate 35, so that the support plate 35 no longer supports the corresponding heating plastic sleeve 37, so that the heating plastic sleeve 37, which is larger than the outer diameter of the connecting pipe, cannot melt and expand the opening of the tee pipe. When the connecting pipe is clamped and fixed, the effective welding diameter of the heating plastic sleeve 37 is the same as the outer diameter of the connecting pipe. At this time, the slider 7 is pushed again to make the heating plastic sleeve 37 contact with the inner surface of the opening of the tee pipe, and gradually melt and expand the opening of the tee pipe with heating and extrusion, so that the tee pipe and the connecting pipe can be finally welded, so that the welding size of the tee pipe can be adjusted according to the outer diameter of different connecting pipes, so that the tee pipe can be exactly matched when welding, thereby optimizing the welding effect;

[0044] In summary, the central axis of the tee opening and the central axis of the connecting pipe can determine the welding size of the tee while coinciding with each other, without the need for independent control of the control elements. This not only reduces costs and the risk of damage to the device, but also avoids the difficulty of wiring and completes the operation.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A welding device for a tee pipe in use, characterized in that: The invention comprises a central block (1), wherein one end of a first universal joint (2) is fixedly connected to three end surfaces of the central block (1), one end of the first universal joint (2) is fixedly connected to one end of a second universal joint (3), the other end of the second universal joint (3) is fixedly connected to a cross bar (4), a strap (5) is installed on one side of the cross bar (4), a sliding cavity (6) is provided on the other side of the cross bar (4), a sliding block (7) is slidably sleeved in the sliding cavity (6), one end of a connecting rod (8) is fixedly connected to the side wall of the sliding block (7), and the other end of the connecting rod (8) is fixedly connected to a first moving block (9); The end of the first moving block (9) is rotatably connected to one end of a swing rod (10), the other end of the swing rod (10) is slidably sleeved with a connecting block (11), the outer surface of the connecting block (11) is fixedly connected to a fixing ring (12), and a motor (13) is mounted on the side wall of the connecting block (11), the output end of the motor (13) is fixedly connected to one end of a transmission shaft (14), the other end of the transmission shaft (14) is fixedly connected to a driving gear (15), the outer surface of the driving gear (15) is meshingly connected to a driven gear ring (16), the inner surface of the driven gear ring (16) is fixedly sleeved with a collar (17), the outer surface of the collar (17) is fixedly connected to one end of a shifting rod (18), the other end of the shifting rod (18) is rotatably sleeved with a driving bevel gear (19), the outer surface of the driving bevel gear (19) is meshingly connected to a first driven bevel gear (20) and a second driven bevel gear (21), the first A bidirectional screw rod (22) is fixedly connected to the central axis of the driven bevel gear (20); one end of a rotating rod (23) is fixedly connected to the central axis of the second driven bevel gear (21); the other end of the rotating rod (23) is fixedly connected to a driving roller (24); one end of a crawler belt (25) is slidably sleeved on the outer surface of the driving roller (24); the other end of the crawler belt (25) is slidably sleeved on the driven roller (26); the central axis of the driven roller (26) is fixedly connected to the A worm (27) is provided, the outer surface of the worm (27) is meshingly connected with a worm wheel (28), a screw (29) is slidably sleeved on the central axis of the worm wheel (28), an embedding groove (30) is provided on the external thread of the screw (29), and one side of a clamping plate (31) is rotatably connected to the end surface of the screw (29), one end of a pressure rod (32) is fixedly connected to the other side of the clamping plate (31), and a stop rod (33) is fixedly connected to the other end of the pressure rod (32); A fixing rod (34) is fixedly connected to the end surface of the connecting block (11), the fixing rod (34) is rotatably sleeved with the bidirectional screw rod (22), and a support plate (35) is fixedly sleeved on the outer surface of the fixing rod (34), one end of a push rod (36) is slidably connected to the side wall of the support plate (35), and the other end of the push rod (36) is slidably connected to a heating shaping sleeve (37), both ends of the bidirectional screw rod (22) are meshingly sleeved with a second moving block (38), one end of a first arm rod (39) is hinged to the side wall of the second moving block (38), the other end of the first arm rod (39) is hinged to one end of a push block (40), the other end of the push block (40) is hinged to one end of a second arm rod (41), the other end of the second arm rod (41) is hinged to the fixing rod (34), and the outer surface of the push block (40) is slidably connected to the push plate (42); A plurality of the heating and shaping sleeves (37) are provided, and the outer diameters of the plurality of heating and shaping sleeves (37) are increased in sequence, and the plurality of heating and shaping sleeves (37) are sleeved with each other, and the central axis of the fixing rod (34) coincides with the central axis of the fixing ring (12); The pressure rod (32) and the stop rod (33) are both slidably sleeved with the support plate (35), and the side wall of the end of the pressure rod (32) is arranged in an arcuate surface, the support plate (35) is arranged in a trident shape, and the clamping plate (31) pushes the push rod (36) to separate from the support plate (35) through the pressure rod (32) and the stop rod (33).

2. A welding device for a three-way pipe in use according to claim 1, characterized in that: The central axes of the three end faces of the central block (1) are perpendicular to each other, the binding straps (5) are attached by Velcro, the cross section of the sliding cavity (6) is T-shaped, the connecting rod (8) is slidably sleeved with the cross bar (4), three cross bars (4) are provided, and the cross bars (4) correspond one to one with the end faces of the central block (1).

3. The welding device for a three-way pipe in use according to claim 1, characterized in that: The screw (29) is meshed and sleeved with the fixed ring (12); a strip is fixedly connected to the inner surface of the worm wheel (28); the strip is slidably sleeved with the embedding groove (30); the driven roller (26), the worm (27) and the worm wheel (28) are all located in the fixed ring (12); and the clamping plate (31) is slidably connected to the side wall of the fixed ring (12).

4. The welding device for a tee pipe in use according to claim 1, characterized in that: A plurality of the clamping plates (31) are provided, and the plurality of clamping plates (31) are evenly distributed about the central axis of the fixing ring (12); the rotating rod (23) is rotatably sleeved with the sleeve ring (17); the driving roller (24) and the first driven bevel gear (20) are rotatably connected with the inner surface of the connecting block (11); and the shifting rod (18) and the driving bevel gear (19) are rotatably sleeved with the connecting block (11).

5. The welding device for a three-way pipe in use according to claim 1, characterized in that: A plurality of top plates (42) are provided, and the plurality of top plates (42) are evenly distributed about the central axis of the fixed rod (34); two groups of the first arm rod (39), the top block (40) and the second arm rod (41) are provided, and the two groups of first arm rods (39), the two groups of top blocks (40) and the two groups of second arm rods (41) are symmetrically arranged about a bisecting plane of the top plate (42).

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