CN115071139B

CN115071139B - Pipe diameter adjustable plastic pipe welding equipment

Info

Publication number: CN115071139B
Application number: CN202210653899.1A
Authority: CN
Inventors: 沈凡成; 姚宗华; 张亚; 杨勇; 罗勇
Original assignee: Sichuan Jinyi Plastic Pipe Industry Co ltd
Current assignee: Sichuan Jinyi Plastic Pipe Industry Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2024-03-22
Anticipated expiration: 2042-06-10
Also published as: CN115071139A

Abstract

The invention belongs to the technical field of plastic pipes, and particularly relates to pipe diameter-adjustable plastic pipe welding equipment, which comprises a clamping mechanism for clamping a pipe, wherein the clamping mechanism comprises four first cylinders which are uniformly distributed on the circumference of a hollow disc and are in an X shape, the telescopic end of each cylinder is connected with a clamping plate, the four clamping plates are mutually staggered and closely slide in a rectangular frame shape, and a plurality of rotating rollers are arranged on the two clamping plates at the bottom and on the surface contacted with the pipe; the clamping plates are internally provided with through belt penetrating holes, a first scroll and a second scroll are respectively fixed on two sides of one first cylinder, an elastic stretching belt is wound on the first scroll, and the elastic stretching belt sequentially passes through the belt penetrating holes of the four clamping plates from the first scroll and finally winds on the second scroll. The invention overcomes the problems that the welding pipe diameter of the traditional welding equipment is single, the traditional welding equipment cannot be assembled and disassembled conveniently, the welding is accurate, and the like; the whole design structure is simple, the welding quality is high, and the degree of automation is high.

Description

Pipe diameter adjustable plastic pipe welding equipment

Technical Field

The invention belongs to the technical field of plastic pipes, and particularly relates to plastic pipe welding equipment with an adjustable pipe diameter.

Background

With the continuous acceleration of global economic integration process, urban construction development speed is rapid, and more mansion stands up, wherein a part of mansion construction is pipeline installation, plastic pipes are widely applied to pipeline laying due to corrosion resistance and high strength, and pipeline laying necessarily involves pipeline welding.

The traditional pipeline welding equipment generally uses V-shaped clamping blocks or bearing bush pressing blocks to clamp the pipeline, the size of the clamping mechanism corresponds to the pipeline one by one, the pipe diameters capable of being welded are determined, and the welding equipment with the same specification cannot adapt to various pipe diameters; in addition, in use, the plastic pipe and the hot frit are needed to be manually butted, the technology of workers is tested, and the butting deviation not only affects the strength of the plastic pipe, but also can scald the workers.

Welding equipment capable of welding various pipe diameters is also related to the prior art, but the welding equipment is often complex in structure, low in reliability and low in welding quality. Because the most important index of welding quality just can be the accurate pressurization butt fusion of two welded pipe, and to the welding setting of multisize, because the pipeline overlength, and flexibility of itself can lead to the poling in-process crooked, lead to poling difficulty, get the pipe difficulty after the welding, consequently in the in-process of pipeline dismouting, transition holds in the palm pulls hard and pulls and lead to the fixing mechanism to take place trouble such as mechanical loosening, clamping position skew easily, more serious can make the pipeline atress warp after the welding, influence welding quality. Therefore, how to assemble and disassemble the plastic pipe lightly and weld the plastic pipe accurately and adapt to various pipe diameters still needs to be studied continuously.

Disclosure of Invention

Aiming at the technical problems in the background technology, the invention provides plastic pipe welding equipment with an adjustable pipe diameter, which overcomes the problems that the welding pipe diameter of the traditional welding equipment is single, the traditional welding equipment cannot be assembled and disassembled conveniently, the welding is accurate, and the like.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

the utility model provides a pipe diameter adjustable plastic tubing welding equipment, includes bottom plate, travelling car and hollow dish, be provided with two travelling car on the bottom plate relatively, be fixed with two at least hollow dishes on every travelling car, be provided with the fixture that is used for centre gripping pipeline on the inner wall of hollow dish, fixture is including equipartition at hollow dish inner wall circumference, four first cylinders that are X shape, and the flexible end of every first cylinder is connected with a grip block, and four grip blocks are crisscross to be hugged closely each other and slide and be rectangular frame form setting, are provided with a plurality of roller on two grip blocks of the bottommost, on the face that contacts with the pipeline; the clamping plates are internally provided with through belt penetrating holes, a first scroll and a second scroll are respectively fixed on two sides of one first cylinder, an elastic stretching belt is wound on the first scroll, and the elastic stretching belt sequentially passes through the belt penetrating holes of the four clamping plates from the first scroll and finally winds on the second scroll.

Optionally, the clamping plate comprises a first clamping plate, a second clamping plate, a third clamping plate and a fourth clamping plate, wherein a plurality of limiting grooves are respectively formed in two ends of the first clamping plate, a plurality of limiting protrusions are respectively formed in two ends of the second clamping plate, a plurality of limiting protrusions are arranged at one end of the third clamping plate, a plurality of first rotating rollers are arranged at the other end of the third clamping plate, a plurality of limiting grooves are formed in one end of the fourth clamping plate, and a plurality of second rotating rollers are arranged at the other end of the fourth clamping plate; the limiting protrusions are arranged in a sliding mode and clung to the limiting grooves, and the first rotating roller and the second rotating roller are arranged in a mutually staggered sliding mode.

Optionally, a second cylinder is arranged on one side of the first scroll, the second cylinder is connected with the first pinch roller, and the first pinch roller is tightly attached to the first scroll; one side of the second scroll is provided with a third cylinder, the third cylinder is connected with a second pinch roller, and the second pinch roller is tightly attached to the second scroll.

Optionally, two ends of the clamping surface of the clamping plate and the back surface of the clamping surface are respectively provided with a through opening, and the openings are communicated with the threading holes.

Optionally, the contact surface of the opening and the elastic pull belt is in arc transition.

Optionally, a pressure sensor is arranged on an opening of the clamping plate through which the first reel and the second reel directly penetrate, and the pressure sensor and the elastic pull belt are tightly attached.

Optionally, four conical positioning blocks are uniformly distributed on the circumference of the hollow disc, and when the first cylinder is completely contracted, the staggered included angle positions of every two clamping plates are tightly attached to the positioning blocks.

Optionally, four positioning cylinders are uniformly distributed on the circumference of the hollow disc, and the first cylinder is fixed on the inner wall of the positioning cylinder.

Optionally, the flexible end of first cylinder is connected with the fixed block, the circumference equipartition has a plurality of slide bar on the fixed block, the circumference equipartition of positioning cylinder has a plurality of slide hole, the slide bar is hugged closely the slide hole one by one and is slided the setting.

The invention has the following advantages and beneficial effects:

1. according to the invention, the clamping welding of plastic pipes with various pipe diameters can be realized by synchronously controlling the expansion and contraction of the four first air cylinders and adjusting the frame area of the clamping plate, so that the constant welding center and the accurate butt joint can be ensured all the time, and the welding quality is ensured.

2. According to the invention, the clamping plates are provided with the threading holes, wherein the two sides of the first cylinder are respectively fixed with the first scroll and the second scroll, the first scroll is wound with the elastic stretching strap, and the elastic stretching strap sequentially passes through the threading holes of the four clamping plates from the first scroll and finally winds on the second scroll. By the design, stable clamping of the pipeline can be realized through the clamping plate and the elastic pull belt, the pipeline can be prevented from rotating in the welding process, the welding quality is ensured, and the clamping is stable and reliable; secondly, the setting of first spool and second spool can be two-way taut or loosen the elasticity stretching strap, can realize better elasticity effect to the elasticity stretching strap, and after the elasticity stretching strap used for a long time, can roll up through one of them spool and deposit, realize automatic change elasticity stretching strap, need not the manual change, guarantees the stability and the welding efficiency of clamping.

3. In the invention, the designed clamping plates mutually interlace, closely slide and can mutually limit, and a plurality of rotating rollers are arranged on the two lower clamping plates and the surface directly contacted with the pipeline. The pipeline can be conveniently pushed into and clamped by the rotating roller in a labor-saving manner, and when the pipeline is completely pushed into the hollow disc, the elastic pull belt is tensioned and the first cylinder is controlled to extend until the pipeline is completely clamped; when the welding is finished, the first cylinder is contracted, the elastic pull belt is loosened, the pipeline is slowly lowered to the rotating roller below through the lowering of the elastic pull belt, and then the pipeline can be pulled out in a labor-saving mode. By means of the design, the pipeline is convenient to disassemble and assemble, time and labor are saved, various traction injuries can not be caused to welding equipment, stability of the clamping mechanism can be guaranteed, stability of disassembly and assembly of the welded pipeline is guaranteed, external force action is applied after pipeline welding is reduced, and welding quality is guaranteed. In conclusion, the invention has the advantages of lower cost, simple structure, high welding quality and high automation degree, and is suitable for large-area popularization.

Drawings

FIG. 1 is a top view of a plastic pipe welding apparatus provided by the present invention;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a schematic view of the clamping mechanism of FIG. 2 clamping a pipe;

FIG. 4 is an enlarged view of portion a of FIG. 2;

FIG. 5 is an enlarged view of section b of FIG. 2;

fig. 6 is an enlarged view of a portion c of fig. 4;

FIG. 7 is a schematic view of a first clamping plate and a second clamping plate according to the present invention;

FIG. 8 is a schematic view of a third clamping plate and a fourth clamping plate according to the present invention;

icon: 1-bottom plate, 11-wheel groove, 12-fourth cylinder, 2-travelling car, 21-wheel, 3-hollow disc, 31-positioning cylinder, 311-mounting hole, 312-slide hole, 32-second cylinder, 321-first pinch roller, 322-first reel, 33-third cylinder, 331-second pinch roller, 332-second reel, 34-positioning block, 4-first cylinder, 41-fixed block, 42-slide bar, 5-clamping plate, 5 a-first clamping plate, 5 b-second clamping plate, 5 c-third clamping plate, 5 d-fourth clamping plate, 51-threading hole, 511-opening, 512-pressure sensor, 52-limit groove, 53-limit protrusion, 54-cover, 55-second roller, 56-first roller, 6-elastic pull belt, 7-pipe, 8-fifth cylinder, 9-hot frit.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

As shown in figures 1-8, the plastic pipe welding equipment with the adjustable pipe diameter comprises a bottom plate 1, a movable trolley 2, a hollow disc 3 and other structures.

Two wheel grooves 11 are formed in the base plate 1, two movable trolleys 2 are oppositely arranged on the base plate 1, and wheels 21 of the movable trolleys 2 are arranged in the wheel grooves 11. The two ends of the bottom plate 1 are respectively provided with a fourth cylinder 12, the fourth cylinders 12 are connected with the movable trolley 2, and the movement of the movable trolley 2 can be controlled through the fourth cylinders 12. Two hollow discs 3 are fixed on each moving trolley 2, a clamping mechanism for clamping a pipeline 7 is arranged on the inner wall of each hollow disc 3, a hot frit 9 is arranged between the two moving trolleys 2, and the hot frit 9 is connected with a fifth cylinder 8. After the pipeline 7 is clamped by the clamping mechanism, the movement of the movable trolley 2 can be controlled by the fourth air cylinder 12, the butt joint of the two pipelines 7 and the hot frit 9 is realized, and after heating is finished, the hot frit 9 is removed for welding operation.

As shown in fig. 2, 3, 4, 5 and 6, the clamping mechanism comprises four first cylinders 4 which are uniformly distributed on the circumference of the inner wall of the hollow disc 3 and are in an X shape. Specifically, four positioning cylinders 31 are uniformly distributed on the circumference of the hollow disc 3, mounting holes 311 are formed in the positioning cylinders 31, and the first cylinder 4 is fixed in the mounting holes 311; the telescopic end of the first cylinder 4 is connected with a fixed block 41, a plurality of sliding rods 42 are uniformly distributed on the circumference of the fixed block 41, a plurality of sliding holes 312 are uniformly distributed on the circumference of the positioning cylinder 31 and outside the mounting holes 311, and the sliding rods 42 are in one-to-one close sliding arrangement with the sliding holes 312. By means of the design, the first air cylinder 4 can be stably fixed, and the stretching accuracy of the air cylinder can be guaranteed.

The telescopic end of each first cylinder 4 is connected with a clamping plate 5, and the clamping plate 5 is connected with a fixed block 41. The four clamping plates 5 are mutually staggered and closely slide to form a rectangular frame, and a plurality of rotating rollers are arranged on the surface, which is contacted with the pipeline 7, of the two lowest clamping plates 5. The first cylinder 4 can be controlled to stretch and retract, and the size of the rectangular frame can be adjusted, so that pipelines 7 with different diameters can be clamped.

As shown in fig. 7 and 8, specifically, the clamping plate 5 includes a first clamping plate 5a, a second clamping plate 5b, a third clamping plate 5c and a fourth clamping plate 5d, and the structures of the four clamping plates 5 are slightly different from each other in that the structures of both sides are slightly different from each other. The both ends of first grip block 5a are provided with a plurality of spacing groove 52 respectively, and the both ends of second grip block 5b are provided with a plurality of spacing arch 53 respectively, and the one end of third grip block 5c is provided with a plurality of spacing arch 53, and the other end of third grip block 5c is provided with a plurality of first roller 56, and the one end of fourth grip block 5d is provided with a plurality of spacing groove 52, and the other end of fourth grip block 5d is provided with a plurality of second roller 55. The limiting protrusion 53 can be just inserted into the limiting groove 52 to slide, and the tail end of the limiting protrusion 53 is provided with a cover 54; the first rotating rollers 56 and the second rotating rollers 55 are arranged in a staggered sliding manner, namely, a gap for inserting the second rotating rollers 55 is reserved between two adjacent first rotating rollers 56. By means of the design, the four clamping plates 5 can be mutually staggered and slidingly connected to form a rectangular frame-shaped structure, stability of the whole structure is guaranteed, the first rotating roller 56 and the second rotating roller 55 are arranged, the clamping plates 5 cannot deform and influence the first air cylinders 4 due to pushing and taking out of the pipeline 7, the position accuracy of the four first air cylinders 4 and the four clamping plates 5 can be guaranteed, welding quality is guaranteed, and the whole structure is convenient for disassembling and assembling the pipeline 7 and reduces stress influence of disassembling and assembling the pipeline 7.

The clamping plates 5 are mounted, according to fig. 2, first, the first clamping plate 5a, the second clamping plate 5b, the third clamping plate 5c and the fourth clamping plate 5d are inserted into each other two by two. After the limit protrusion 53 of the second clamping plate 5b is inserted into the limit groove 52 of the first clamping plate 5 a; then, inserting the limit groove 52 at the other end of the first clamping plate 5a into the limit protrusion 53 of the third clamping plate 5c, and inserting the limit protrusion 53 at the other end of the second clamping plate 5b into the limit groove 52 of the fourth clamping plate 5 d; finally, the first rotating roller 56 and the second rotating roller 55 are mutually inserted in a staggered way, so that the connection of the four clamping plates 5 can be realized; then, the upper cover 54 is connected to the end of the corresponding limit protrusion 53. After four grip blocks 5 are connected, wholly be rectangle frame column structure, when first cylinder 4 stretches out and draws back, the position of four grip blocks 5 each other is changing, hugs closely each other and slides to change the size of rectangle frame.

Further, four conical positioning blocks 34 are uniformly distributed on the circumference (upper, lower, left and right sides) of the hollow disc 3. As shown in fig. 2, when the first cylinder 4 is completely contracted, the staggered included angle positions of the two clamping plates 5 are tightly attached to the positioning block 34, so that the positioning block 34 can be stably limited and fixed. The clamping plate 5 is internally provided with a penetrating belt penetrating hole 51, two ends of the clamping surface of the clamping plate 5 and the back surface of the clamping surface are respectively provided with a penetrating opening 511, and the opening 511 is communicated with the belt penetrating hole 51. A first scroll 322 and a second scroll 332 are respectively fixed at two sides of one first cylinder 4, a second cylinder 32 is arranged at one side of the first scroll 322, the second cylinder 32 is connected with a first compression wheel 321, and the first compression wheel 321 is tightly attached to the first scroll 322; a third cylinder 33 is disposed on one side of the second reel 332, the third cylinder 33 is connected to a second pinch roller 331, and the second pinch roller 331 is disposed in close contact with the second reel 332. The first reel 322 is wound with the elastic webbing 6, and the elastic webbing 6 passes through the threading holes 51 of the four holding plates 5 from the first reel 322 in order and finally is wound around the second reel 332. The design of the elastic pull belt 6 can quickly and accurately realize the disassembly and assembly operation of the pipeline 7, further strengthen the fixing effect of the pipeline 7, automatically replace the elastic pull belt 6 and ensure that the elastic pull belt 6 is in reliable elastic constraint.

Further, the contact surface of the opening 511 and the elastic band 6 is transited by an arc shape.

Further, the opening 511 of the clamping plate 5 through which the first reel 322 and the second reel 332 directly penetrate is provided with a pressure sensor 512, and the pressure sensor 512 is tightly attached to the elastic pull belt 6 for measuring the elasticity of the elastic pull belt 6 after being tensioned.

Principle of operation:

first, as shown in fig. 1 and 2, the pipe 7 is put on the first roller 56 of the third clamping plate 5c and the second roller 55 of the fourth clamping plate 5d in the outermost hollow disc 3, so that the pipe 7 can be pushed in a labor-saving manner until the pipe 7 is always penetrated out of the hollow disc 3 at the other end of the travelling trolley 2 and approaches the hot frit 9.

Second, after the pipe 7 is completely pushed in, as shown in fig. 2, then four first cylinders 4 and one of the reels (first reel 322 or second reel 332) are synchronously started, and the rectangular frame formed by the four clamping plates 5 is gradually contracted while the elastic pull belt 6 is tensioned until the complete fixing is finally achieved (as shown in fig. 3). After the pipe 7 is firmly fixed, the welding operation can be performed.

Third, after the welding is completed, four first cylinders 4 and one of the reels (the first reel 322 or the second reel 332) are synchronously started, the rectangular frame formed by the four clamping plates 5 is gradually enlarged while the elastic pull belt 6 is loosened, and the pipe 7 slowly falls down onto the first rotating roller 56 and the second rotating roller 55 and is directly pulled out (as shown in fig. 2).

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The pipe diameter adjustable plastic pipe welding equipment comprises a bottom plate (1), moving trolleys (2) and hollow discs (3), wherein two moving trolleys (2) are oppositely arranged on the bottom plate (1), at least two hollow discs (3) are fixed on each moving trolley (2), and clamping mechanisms for clamping a pipeline (7) are arranged on the inner wall of each hollow disc (3), and the pipe diameter adjustable plastic pipe welding equipment is characterized in that each clamping mechanism comprises four first air cylinders (4) which are uniformly distributed on the circumference of the inner wall of each hollow disc (3) and are in an X shape, the telescopic end of each first air cylinder (4) is connected with one clamping plate (5), the four clamping plates (5) are arranged in a rectangular frame shape in a mutually staggered and closely sliding mode, and a plurality of rotating rollers are arranged on the surfaces, which are contacted with the pipeline (7), of the two clamping plates (5) at the lowest part;

the clamping plates (5) are internally provided with through belt penetrating holes (51), a first scroll (322) and a second scroll (332) are respectively fixed on two sides of one first cylinder (4), an elastic pull belt (6) is wound on the first scroll (322), and the elastic pull belt (6) sequentially passes through the belt penetrating holes (51) of the four clamping plates (5) from the first scroll (322) and finally winds on the second scroll (332);

the clamping plate (5) comprises a first clamping plate (5 a), a second clamping plate (5 b), a third clamping plate (5 c) and a fourth clamping plate (5 d), wherein a plurality of limiting grooves (52) are respectively formed in two ends of the first clamping plate (5 a), a plurality of limiting protrusions (53) are respectively formed in two ends of the second clamping plate (5 b), a plurality of limiting protrusions (53) are respectively formed in one end of the third clamping plate (5 c), a plurality of first rotating rollers (56) are arranged at the other end of the third clamping plate (5 c), a plurality of limiting grooves (52) are formed in one end of the fourth clamping plate (5 d), and a plurality of second rotating rollers (55) are arranged at the other end of the fourth clamping plate (5 d); the limiting protrusions (53) are tightly attached to the limiting grooves (52) in a sliding mode, and the first rotating rollers (56) and the second rotating rollers (55) are arranged in a staggered sliding mode;

a second air cylinder (32) is arranged on one side of the first scroll (322), the second air cylinder (32) is connected with a first compression wheel (321), and the first compression wheel (321) is tightly attached to the first scroll (322); a third air cylinder (33) is arranged on one side of the second scroll (332), the third air cylinder (33) is connected with a second compression wheel (331), and the second compression wheel (331) is tightly attached to the second scroll (332);

the clamping surface of the clamping plate (5) and two ends of the back surface of the clamping surface are respectively provided with a through opening (511), and the openings (511) are communicated with the tape penetrating holes (51).

2. A pipe diameter adjustable plastic pipe welding apparatus according to claim 1, wherein: the contact surface of the opening (511) and the elastic pull belt (6) is in arc transition.

3. A pipe diameter adjustable plastic pipe welding apparatus according to claim 1, wherein: the pressure sensor (512) is arranged on an opening (511) of the clamping plate (5) through which the first scroll (322) and the second scroll (332) directly penetrate, and the pressure sensor (512) and the elastic pull belt (6) are tightly attached.

4. A pipe diameter adjustable plastic pipe welding apparatus according to claim 1, wherein: four conical positioning blocks (34) are uniformly distributed on the circumference of the hollow disc (3), and when the first air cylinder (4) is completely contracted, the staggered included angle positions of every two clamping plates (5) are tightly attached to the positioning blocks (34).

5. A pipe diameter adjustable plastic pipe welding apparatus according to claim 1, wherein: four positioning cylinders (31) are uniformly distributed on the circumference of the hollow disc (3), and the first air cylinder (4) is fixed on the inner wall of the positioning cylinder (31).

6. A pipe diameter adjustable plastic pipe welding apparatus according to claim 5, wherein: the telescopic end of the first cylinder (4) is connected with a fixed block (41), a plurality of sliding rods (42) are uniformly distributed on the circumference of the fixed block (41), a plurality of sliding holes (312) are uniformly distributed on the circumference of the positioning cylinder (31), and the sliding rods (42) are in one-to-one close fit with the sliding holes (312) in a sliding mode.