Positioning device for processing plastic conduit

Abstract

The application discloses a positioning device for plastic conduit processing, and specifically comprises: a positioning support, a pressing device is fixedly connected to the top of the positioning support, and a fixing base is fixedly connected to the bottom of the positioning support; a supporting device is arranged on the fixing base below the pressing device, and the bottom of the supporting device is fixedly connected with the top of the fixing base; the pressing device comprises: a pressing base, a pressing push rod is fixedly connected to the top of the pressing base, supporting top rods are rotationally connected to the bottoms of both ends of the pressing base; elastic pressing sheets are rotationally connected to the ends of the supporting top rods away from the pressing base, and friction pads are fixedly connected to the bottoms of the elastic pressing sheets, and the application relates to the technical field of plastic conduit processing. The positioning device for plastic conduit processing is convenient for positioning and clamping pipe fittings with different diameters, does not need to replace the positioning device, and has good adjustment adaptability.

Description

Technical Field

[0001] This invention relates to the field of plastic conduit processing technology, specifically to a positioning device for plastic conduit processing. Background Technology

[0002] Plastic conduits, also known as plastic tubing, are generally made from synthetic resins, specifically polyester, with the addition of stabilizers, lubricants, and plasticizers. They are manufactured through extrusion in a pipe-making machine using a "plastic" method. They are mainly used for piping in building water supply systems, drainage, ventilation, and sewage systems; underground drainage systems; rainwater pipes; and conduits for electrical wiring. Plastic conduits are divided into two main categories: thermoplastic pipes and thermosetting plastic pipes. Thermoplastic conduits include polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), and polyoxymethylene (POM) pipes, while thermosetting conduits include phenolic resin conduits. Currently, the positioning devices used in the welding process for plastic conduits typically only clamp conduits of a specific diameter. When the size of the conduit to be fixed changes, different positioning clamps need to be replaced, which is inconvenient. Furthermore, fixing requires multiple sets of bolts and nuts, making the fixing operation cumbersome. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a positioning device for processing plastic conduits. This solves the problems that current positioning devices used in the welding process of plastic conduits can only position and clamp conduits of a specific diameter. When the size of the conduit to be fixed changes, different positioning clamps need to be replaced, which is inconvenient to use. Furthermore, the fixing process requires multiple sets of bolts and nuts for locking, making the fixing operation cumbersome.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a positioning device for processing plastic conduits, specifically comprising: A positioning bracket, wherein a clamping device is fixedly connected to the top of the positioning bracket and a fixing base is fixedly connected to the bottom of the positioning bracket; A support device is provided on a fixed base located below the clamping device, and the bottom of the support device is fixedly connected to the top of the fixed base. The clamping device includes: A clamping seat, with a clamping push rod fixedly connected to the top of the clamping seat, and support top rods rotatably connected to the bottom of both ends of the clamping seat; An elastic clamping plate, both ends of which are rotatably connected to the end of the support rod away from the clamping seat, and a friction pad is fixedly connected to the bottom of the elastic clamping plate; A tightening device is provided above an elastic pressing plate. The bottom of the tightening device is rotatably connected to the top of the elastic pressing plate, and the top of the tightening device is fixedly connected to the bottom of the pressing seat.

[0005] Equipped with a clamping device, when pipe fittings need to be fixed, the fittings are placed on the support device, and then the clamping push rod drives the clamping seat downwards. The clamping seat, through the support top rod, drives the elastic clamping plate downwards. When the elastic clamping plate contacts the fitting, the clamping force of the fitting causes the elastic clamping plate to deform and adhere to the outer wall of the fitting. At the same time, the bent elastic clamping plate causes the support top rod to tilt and rotate. When the elastic clamping plate wraps around and presses against the outer wall above the fitting, the fitting is pressed onto the support device without the need for bolt and nut locking. The fixing operation is convenient. With the elastic clamping plate, as the clamping seat and support top rod descend, the elastic clamping plate deforms under the pressure of the fitting. The deformation of the elastic clamping plate can adapt to fittings of different diameters, so that when the fitting diameter changes, the elastic clamping plate can still press against the fitting surface through its own deformation. This facilitates the positioning and clamping of fittings of different diameters without the need to replace the positioning device, and has good adjustability.

[0006] Preferably, the top of the pressing push rod passes through the top of the positioning bracket and is fixedly connected to the top of the positioning bracket. Both ends of the pressing seat are fixedly connected to guide sliders. The side of the guide slider away from the pressing seat extends to the positioning bracket and is slidably connected to the positioning bracket.

[0007] Preferably, the tightening device includes a tightening sleeve with grooves on both sides. A threaded sleeve is threaded to the outer side of the tightening sleeve, and a sliding sleeve is rotatably connected to one side of the threaded sleeve via a rotating bearing. A tightening slider is slidably connected to the inner wall of the tightening sleeve, and a compression spring is fixedly connected to the bottom of the tightening slider. Both sides of the tightening slider are fixedly connected to the inner wall of the sliding sleeve via connecting rods. A compression rod is fixedly connected to the end of the compression spring away from the tightening slider. With this tightening device, when the elastic clamping plate is compressed by the pipe fitting, the center of the elastic clamping plate first bends and rises, driving the compression spring to... As the pressure rod rises, it compresses the compression spring. The spring force pushes the pressure rod, causing it to press the elastic clamping plate against the pipe surface. This prevents the elastic clamping plate from failing to contact the pipe surface due to excessive bending at its center during bending deformation. A threaded sleeve is also included; rotating the threaded sleeve moves the sliding sleeve, which, via a connecting rod, causes the top-clamping slider to slide inside the top-clamping sleeve. This changes the initial compression of the compression spring, allowing for adjustments to the pressure exerted by the pressure rod on the elastic clamping plate, accommodating different degrees of deformation.

[0008] Preferably, the top of the tightening sleeve is fixedly connected to the bottom of the pressing seat, and the bottom of the pressing rod extends to the outside of the tightening sleeve and is rotatably connected to the top center of the elastic pressing plate.

[0009] Preferably, the connecting rods on both sides of the clamping slider extend through the slide groove to the outside of the clamping sleeve and are slidably connected to the inner wall of the slide groove.

[0010] Preferably, the support device includes a support base with a triangular support groove on its top and a mating groove on the top of the support base facing the clamping device. A hydraulic cavity is formed inside the support base, and telescopic sliding holes are formed on both sides of the inner wall of the hydraulic cavity. A positioning piston is slidably connected to the inner wall of each telescopic sliding hole. One end of the positioning piston extends to the outside of the telescopic sliding hole and is fixedly connected to a friction block. This support device can accommodate pipes of different diameters by cooperating with the clamping device through the triangular support groove on the top of the support base. When the pipe diameter changes, the hydraulic oil inside the hydraulic cavity is moved by a hydraulic cylinder. The hydraulic oil moves the positioning piston inside the telescopic sliding hole, which in turn moves the friction block, releasing it from the friction groove. This allows the support base to be moved to a suitable height, facilitating adjustment of the pipe height when the pipe diameter changes, keeping the pipe's center position constant, and facilitating subsequent processing.

[0011] Preferably, friction grooves adapted to the friction block are provided on both sides of the inner wall of the positioning bracket, and the side of the friction block away from the positioning piston extends into the friction groove on the inner wall of the positioning bracket and slides in connection with the inner wall of the friction groove.

[0012] Preferably, the triangular support groove and the mating groove are arranged perpendicularly to each other, and a hydraulic cylinder is connected to one side of the hydraulic cavity through a hydraulic pipe. The bottom of the hydraulic cylinder is fixedly connected to the top of the fixed seat.

[0013] This invention provides a positioning device for processing plastic conduits. It has the following advantages: (1) The positioning device for processing plastic conduits is equipped with a clamping device. When it is necessary to fix the pipe fitting, the pipe fitting is placed on the support device, and then the clamping push rod drives the clamping seat to move downward. The clamping seat drives the elastic clamping plate to move downward through the support top rod. When the elastic clamping plate contacts the pipe fitting, the elastic clamping plate deforms and sticks to the outer wall of the pipe fitting due to the squeezing force of the pipe fitting. At the same time, the bent elastic clamping plate drives the support top rod to tilt and rotate. When the elastic clamping plate wraps around and presses against the outer wall above the pipe fitting, the pipe fitting can be pressed onto the support device by the elastic clamping plate. There is no need to use bolt and nut combination for locking, and the fixing operation is convenient.

[0014] (2) The positioning device for processing plastic conduits is equipped with an elastic clamping plate. When the elastic clamping plate descends with the clamping seat and the support rod, it can deform under the pressure of the pipe fitting. The deformation of the elastic clamping plate can adapt to pipe fittings of different diameters. When the diameter of the pipe fitting changes, the elastic clamping plate can still press against the surface of the pipe fitting through its own deformation. This makes it convenient to position and clamp pipe fittings of different diameters without replacing the positioning device, and the adjustment adaptability is good.

[0015] (3) The positioning device for processing plastic conduit is equipped with a clamping device. When the elastic clamping plate is squeezed by the pipe fitting, the center position of the elastic clamping plate first bends and rises, which drives the extrusion rod to rise. At the same time as the extrusion rod rises, it compresses the extrusion spring. The extrusion rod can be pushed by the elastic force of the extrusion spring, so that the extrusion rod drives the elastic clamping plate to press against the surface of the pipe fitting, thus avoiding the situation where the center position of the elastic clamping plate cannot contact the surface of the pipe fitting due to the large curvature when it is bent.

[0016] (4) The positioning device for processing plastic conduit is equipped with a threaded sleeve. The sliding sleeve can be moved by rotating the threaded sleeve. The sliding sleeve drives the top sliding block to slide inside the top sleeve through the connecting rod, which can change the initial compression degree of the compression spring and facilitate the change of the squeezing force of the squeezing top rod on the elastic pressing plate. It can adapt to different deformation degrees of the elastic pressing plate.

[0017] (5) The positioning device for processing plastic conduits is equipped with a support device. It can be adapted to pipes of different diameters by cooperating with the clamping device through the triangular support groove on the top of the support seat. When the diameter of the pipe changes, the hydraulic oil inside the hydraulic cavity can be moved by the hydraulic cylinder. The hydraulic oil moves the positioning piston inside the telescopic sliding hole. The positioning piston moves the friction block. The friction block is released from the friction sliding groove, and the position of the support seat can be moved. It is convenient to move the support seat to a suitable height. It is convenient to adjust the height of the pipe when the diameter of the pipe changes, so that the center position of the pipe remains unchanged, which is convenient for subsequent processing.

[0018] In summary, this invention, through the multi-link and elastic element linkage structure inside the clamping device, transforms the unidirectional motion of the driving force into a composite motion of wrapping, clamping, and center-pressing the pipe fitting, achieving rapid and adaptive clamping of pipe fittings of different diameters. Simultaneously, through the hydraulic synchronous linkage mechanism in the support device, it achieves rapid adjustment and stable locking of the pipe fitting support height, ensuring the consistency of the pipe fitting center position over a large size range. This solves the problems of frequent clamp changes and cumbersome operation in existing technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the pressing device structure of the present invention; Figure 4 This is a schematic diagram of the clamping device structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the clamping device of the present invention; Figure 6 This is a schematic diagram of the support device structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the support device of the present invention.

[0020] In the diagram: 1. Positioning bracket; 2. Clamping device; 21. Clamping seat; 22. Clamping push rod; 23. Support rod; 24. Elastic clamping plate; 25. Friction pad; 26. Tightening device; 261. Tightening sleeve; 262. Slide groove; 263. Threaded sleeve; 264. Sliding sleeve; 265. Tightening slider; 266. Compression spring; 267. Compression rod; 27. Guide slider; 3. Fixed seat; 4. Support device; 41. Support seat; 42. Triangular support groove; 43. Mating groove; 44. Hydraulic cavity; 45. Telescopic sliding hole; 46. Positioning piston; 47. Friction block; 48. Hydraulic cylinder. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1:

[0023] Please see Figures 1-3 The present invention provides a technical solution: a positioning device for processing plastic conduits, specifically comprising: Positioning bracket 1, with a pressing device 2 fixedly connected to the top of the positioning bracket 1 and a fixing seat 3 fixedly connected to the bottom of the positioning bracket 1; Support device 4 is provided on the part of the fixed base 3 located below the clamping device 2, and the bottom of the support device 4 is fixedly connected to the top of the fixed base 3; The clamping device 2 includes: A clamping seat 21, with a clamping push rod 22 fixedly connected to its top, and support rods 23 rotatably connected to the bottom of both ends of the clamping seat 21; The elastic clamping plate 24 has two ends rotatably connected to the end of the support rod 23 away from the clamping seat 21, and a friction pad 25 is fixedly connected to the bottom of the elastic clamping plate 24. A tightening device 26 is provided above the elastic pressing plate 24. The bottom of the tightening device 26 is rotatably connected to the top of the elastic pressing plate 24, and the top of the tightening device 26 is fixedly connected to the bottom of the pressing seat 21.

[0024] The top of the pressing push rod 22 passes through the top of the positioning bracket 1 and is fixedly connected to the top of the positioning bracket 1. Both ends of the pressing seat 21 are fixedly connected to guide sliders 27. The side of the guide slider 27 away from the pressing seat 21 extends to the positioning bracket 1 and is slidably connected to the positioning bracket 1.

[0025] A clamping device 2 is provided. When it is necessary to fix the pipe fitting, the pipe fitting is placed on the support device 4, and then the clamping push rod 22 drives the clamping seat 21 to move downward. The clamping seat 21 drives the elastic clamping plate 24 to move downward through the support top rod 23. When the elastic clamping plate 24 contacts the pipe fitting, due to the squeezing force of the pipe fitting, the elastic clamping plate 24 deforms and sticks to the outer wall of the pipe fitting. At the same time, the bent elastic clamping plate 24 drives the support top rod 23 to tilt and rotate. When the elastic clamping plate 24 wraps around and presses against the outer wall above the pipe fitting, it can be released by the spring. The elastic clamping plate 24 presses the pipe fitting onto the support device 4 without the need for bolt and nut combination locking, making the fixing operation convenient. The elastic clamping plate 24 is provided. When the elastic clamping plate 24 descends with the clamping seat 21 and the support rod 23, it can deform under the compression of the pipe fitting. The deformation of the elastic clamping plate 24 can adapt to pipe fittings of different diameters. When the pipe fitting diameter changes, the elastic clamping plate 24 can still press against the pipe fitting surface through its own deformation. It is convenient to position and clamp pipe fittings of different diameters without the need to replace the positioning device, and the adjustment adaptability is good.

[0026] Example 2:

[0027] Please see Figures 1-5 Based on Embodiment 1, the present invention provides a technical solution: the tightening device 26 includes a tightening sleeve 261, both sides of the tightening sleeve 261 are provided with sliding grooves 262, the outer side of the tightening sleeve 261 is threadedly connected to a threaded sleeve 263, one side of the threaded sleeve 263 is rotatably connected to a sliding sleeve 264 through a rotating bearing, the inner wall of the tightening sleeve 261 is slidably connected to a tightening slider 265, the bottom of the tightening slider 265 is fixedly connected to a compression spring 266, both sides of the tightening slider 265 are fixedly connected to the inner wall of the sliding sleeve 264 through connecting rods.

[0028] A compression spring 266 is fixedly connected to a compression rod 267 at the end away from the clamping slider 265. The top of the clamping sleeve 261 is fixedly connected to the bottom of the clamping seat 21. The bottom of the compression rod 267 extends to the outside of the clamping sleeve 261 and is rotatably connected to the center position of the top of the elastic clamping plate 24. The connecting rods on both sides of the clamping slider 265 extend to the outside of the clamping sleeve 261 through the slide groove 262 and are slidably connected to the inner wall of the slide groove 262. A clamping device 26 is provided. When the elastic clamping plate 24 is squeezed by the pipe, the center position of the elastic clamping plate 24 first bends and rises, driving the compression rod 267 to rise. As the compression rod 267 rises, it compresses the compression spring 266. The compression spring 266 can push the compression rod 267, which in turn causes the elastic clamping plate 24 to press against the surface of the pipe fitting. This prevents the center of the elastic clamping plate 24 from failing to contact the surface of the pipe fitting due to excessive bending when it is bent. A threaded sleeve 263 is provided, which can be rotated to move the sliding sleeve 264. The sliding sleeve 264 drives the top sliding block 265 to slide inside the top sleeve 261 via the connecting rod, thereby changing the initial compression degree of the compression spring 266. This allows for easy adjustment of the compression force of the compression rod 267 on the elastic clamping plate 24, and can adapt to different degrees of deformation of the elastic clamping plate 24.

[0029] Example 3:

[0030] Please see Figures 1-7Based on Embodiments 1 and 2, the present invention provides a technical solution: the support device 4 includes a support base 41, the top of the support base 41 is provided with a triangular support groove 42, the part of the top of the support base 41 facing the pressing device 2 is provided with a mating groove 43, the support base 41 is provided with a hydraulic cavity 44 inside, and telescopic sliding holes 45 are provided on both sides of the inner wall of the hydraulic cavity 44. A positioning piston 46 is slidably connected to the inner wall of the telescopic sliding hole 45. One end of the positioning piston 46 extends to the outside of the telescopic sliding hole 45 and is fixedly connected to a friction block 47. Friction grooves adapted to the friction block 47 are provided on both sides of the inner wall of the positioning bracket 1. The side of the friction block 47 away from the positioning piston 46 extends into the friction groove on the inner wall of the positioning bracket 1 and is slidably connected to the inner wall of the friction groove. The triangular support groove 42 and the mating groove 43 are provided with a mating groove 44. The grooves 43 are arranged perpendicularly to each other. One side of the hydraulic cavity 44 is connected to a hydraulic cylinder 48 through a hydraulic pipe. The bottom of the hydraulic cylinder 48 is fixedly connected to the top of the fixed base 3. A support device 4 is provided. The triangular support groove 42 on the top of the support base 41 can cooperate with the clamping device 2 to adapt to pipes of different diameters. When the diameter of the pipe changes, the hydraulic cylinder 48 can drive the hydraulic oil inside the hydraulic cavity 44 to move. The hydraulic oil drives the positioning piston 46 inside the telescopic sliding hole 45 to move. The positioning piston 46 drives the friction block 47 to move. After the friction block 47 is released from the friction sliding groove, the operator can manually push or pull or use an external lifting mechanism to move the support base 41 to a suitable height. This allows the height of the pipe to be adjusted when the diameter of the pipe changes, so that the center position of the pipe remains unchanged, which is convenient for subsequent processing.

[0031] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A positioning device for processing plastic conduits, specifically comprising: A positioning bracket (1) is fixedly connected to a pressing device (2) at its top and a fixing seat (3) is fixedly connected to its bottom. Support device (4), which is located on the part of the fixed seat (3) below the clamping device (2), and the bottom of the support device (4) is fixedly connected to the top of the fixed seat (3); The positioning device for processing the plastic conduit is characterized in that: the clamping device (2) includes: A clamping seat (21) is fixedly connected to a clamping push rod (22) at the top of the clamping seat (21), and a support top rod (23) is rotatably connected to the bottom of both ends of the clamping seat (21). An elastic clamping plate (24) is provided, with both ends of the elastic clamping plate (24) being rotatably connected to the end of the support rod (23) away from the clamping seat (21). A friction pad (25) is fixedly connected to the bottom of the elastic clamping plate (24). A tightening device (26) is provided above an elastic pressing plate (24). The bottom of the tightening device (26) is rotatably connected to the top of the elastic pressing plate (24), and the top of the tightening device (26) is fixedly connected to the bottom of the pressing seat (21).

2. The positioning device for processing plastic conduits according to claim 1, characterized in that: The top of the pressing push rod (22) passes through the top of the positioning bracket (1) and is fixedly connected to the top of the positioning bracket (1). Both ends of the pressing seat (21) are fixedly connected to guide sliders (27). The side of the guide slider (27) away from the pressing seat (21) extends to the positioning bracket (1) and is slidably connected to the positioning bracket (1).

3. The positioning device for processing plastic conduits according to claim 1, characterized in that: The tightening device (26) includes a tightening sleeve (261), with sliding grooves (262) on both sides of the tightening sleeve (261). A threaded sleeve (263) is threadedly connected to the outer side of the tightening sleeve (261). A sliding sleeve (264) is rotatably connected to one side of the threaded sleeve (263) via a rotating bearing. A tightening slider (265) is slidably connected to the inner wall of the tightening sleeve (261). A compression spring (266) is fixedly connected to the bottom of the tightening slider (265). Both sides of the tightening slider (265) are fixedly connected to the inner wall of the sliding sleeve (264) via connecting rods. A compression rod (267) is fixedly connected to the end of the compression spring (266) away from the tightening slider (265).

4. The positioning device for processing plastic conduits according to claim 3, characterized in that: The top of the clamping sleeve (261) is fixedly connected to the bottom of the pressing seat (21), and the bottom of the pressing rod (267) extends to the outside of the clamping sleeve (261) and is rotatably connected to the top center of the elastic pressing plate (24).

5. The positioning device for processing plastic conduits according to claim 3, characterized in that: The connecting rods on both sides of the top-tightening slider (265) extend through the slide groove (262) to the outside of the top-tightening sleeve (261) and slide in connection with the inner wall of the slide groove (262).

6. The positioning device for processing plastic conduits according to claim 1, characterized in that: The support device (4) includes a support base (41), a triangular support groove (42) is provided on the top of the support base (41), a mating groove (43) is provided on the part of the top of the support base (41) facing the pressing device (2), a hydraulic cavity (44) is provided inside the support base (41), telescopic sliding holes (45) are provided on both sides of the inner wall of the hydraulic cavity (44), a positioning piston (46) is slidably connected to the inner wall of the telescopic sliding hole (45), and one end of the positioning piston (46) extends to the outside of the telescopic sliding hole (45) and is fixedly connected to a friction block (47).

7. A positioning device for processing plastic conduits according to claim 6, characterized in that: The positioning bracket (1) has friction grooves on both sides of its inner wall that are adapted to the friction block (47). The side of the friction block (47) away from the positioning piston (46) extends into the friction groove on the inner wall of the positioning bracket (1) and slides in connection with the inner wall of the friction groove.

8. A positioning device for processing plastic conduits according to claim 6, characterized in that: The triangular support groove (42) and the mating groove (43) are arranged perpendicularly to each other. One side of the hydraulic cavity (44) is connected to a hydraulic cylinder (48) through a hydraulic pipe. The bottom of the hydraulic cylinder (48) is fixedly connected to the top of the fixed seat (3).

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