Traction device for producing wear-resistant PVC-U (unplasticized polyvinyl chloride) pipe

Abstract

The utility model discloses a traction device for production of wear-resistant PVC-U pipes, which belongs to the technical field of pipe production and comprises a traction frame, openings are formed in two sides of the traction frame, a pipe guide mechanism is arranged at one end, close to the openings, of the outer side of the traction frame, and a fixing seat is mounted on the inner bottom wall of the traction frame. An electric telescopic rod is inserted into the middle of the top of the traction frame in a penetrating mode, a movable base is installed at the bottom of the electric telescopic rod, traction belt tensioning mechanisms are arranged on the movable base and the fixed base, and pipe traction mechanisms are arranged at the ends, close to each other, of the two traction belt tensioning mechanisms. According to the pipe traction device, the movable base, the pipe traction mechanisms, the fixed base and the electric telescopic rod are arranged in a matched mode, the electric telescopic rod stretches out to drive the movable base to move up and down, and then the distance between the two pipe traction mechanisms can be conveniently adjusted, so that the two pipe traction mechanisms can conduct traction work on pipes of different specifications; and the universality of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe production, and in particular to a traction device for the production of wear-resistant PVC-U pipes. Background Technology

[0002] PVC-U pipes are made primarily from sanitary-grade polyvinyl chloride resin, with the addition of appropriate amounts of stabilizers, lubricants, fillers, and colorants. The pipes are produced through extrusion molding using a plastic extruder and injection molding using an injection molding machine. The process involves cooling, curing, shaping, inspection, and packaging to complete the production of pipes and fittings. They possess excellent physical and chemical properties, are resistant to chemical corrosion, have high impact strength, good wear resistance, and low fluid resistance. Compared to cast iron pipes of the same diameter, they offer 30% higher flow rate. They are also resistant to aging and have a long service life, making them an ideal material for building water supply and drainage. During the processing of PVC-U pipes, multiple processing steps are typically involved. Therefore, the pipes need to be transferred and transported during these steps, usually requiring the use of traction devices.

[0003] Patent publication number CN219620216U discloses a pipe traction device, including two plate conveyors spaced vertically apart. The moving surfaces of both plate conveyors move in the front-back direction, and a space for pipe movement is formed between the two plate conveyors. One of the plate conveyors has guide mechanisms at its left and right ends to restrict pipe movement, and a limit mechanism is fixedly installed at one end. The two limiting ends of the limit mechanism can move synchronously but in opposite directions in the left-right direction. The limit mechanism includes a mounting box fixed to one of the plate conveyors, and the top of the mounting box has a through groove in the left-right direction. In the above solution, during use, the limit mechanism limits the pipe entering between the two plate conveyors, ensuring that the pipe enters the space formed by the two plate conveyors normally. The pipe traction device in the above technology uses two sets of plate conveyors to traction and transport the pipe. Since the traction and transport distance between the two sets of plate conveyors is fixed, it cannot transport pipes of different specifications during use, resulting in a limited scope of application and failing to meet the needs of pipe production. Summary of the Invention

[0004] To address the problem mentioned above that the existing two-set plate conveyor has a fixed traction and conveying distance, making it impossible to transport pipes of different specifications during use, resulting in a limited scope of application and failure to meet the needs of pipe production, this utility model provides a traction device for the production of wear-resistant PVC-U pipes.

[0005] This utility model provides a traction device for the production of wear-resistant PVC-U pipes, adopting the following technical solution:

[0006] A traction device for producing wear-resistant PVC-U pipes includes a traction frame with openings on both sides. A pipe guiding mechanism is provided at the outer end of the traction frame near the opening. A fixed seat is installed on the inner bottom wall of the traction frame. An electric telescopic rod is inserted through the middle of the top of the traction frame. A movable seat is installed at the bottom of the electric telescopic rod. A traction belt tensioning mechanism is provided on both the movable seat and the fixed seat. A pipe traction mechanism is provided at the end of each of the two sets of traction belt tensioning mechanisms that are close to each other.

[0007] By adopting the above technical solution, the pipe to be pulled enters the interior of the traction frame from the opening at the left end and exits from the opening at the right end. The pipe is guided at both ends by the pipe guiding mechanism. At this time, the pipe is located between the two sets of pipe traction mechanisms. The electric telescopic rod is extended. When the electric telescopic rod extends, it drives the moving seat to move downward. The moving seat moves downward, which drives the upper pipe traction mechanism to move downward until the two sets of pipe traction mechanisms contact the pipe. Thus, it is possible to pull pipes of different specifications, which improves the versatility of the device.

[0008] Optionally, the pipe guiding mechanism includes a horizontal plate, which is installed on the outside of the traction frame near the opening. A screw is screwed to the middle of the horizontal plate, a rocker wheel is fixed to the top of the screw, and a movable plate is rotatably connected to the bottom of the screw. Vertical plates are installed at both the front and rear ends of the bottom of the movable plate, and guide wheels are rotatably connected between the two sets of vertical plates.

[0009] By adopting the above technical solution, rotating the rocker wheel drives the screw to rotate, the screw rotation drives the movable plate to move, and then the vertical plate drives the guide wheel to move in the direction of the pipe until the guide wheel contacts the pipe, which facilitates the guidance of both ends of the pipe and prevents the pipe from deviating.

[0010] Optionally, a slider is connected to the side of the movable plate near the center of the traction frame, and a groove is provided on the outer side of the traction frame to slide with the slider.

[0011] By adopting the above technical solution, when the movable plate moves, it drives the slider to slide inside the groove, thereby limiting the movable plate so that it can only move up and down.

[0012] Optionally, a moving seat support mechanism is provided between the moving seat and the traction frame. The moving seat support mechanism includes two sets of support rods, which are respectively installed at both ends of the top of the moving seat. The tops of both sets of support rods extend out of the traction frame, and through holes matching the support rods are opened at both ends of the top of the traction frame.

[0013] By adopting the above technical solution, when the moving seat is raised or lowered, it can drive the support rod to slide inside the through hole, thereby making the moving seat more stable during the raising and lowering process.

[0014] Optionally, the pipe traction mechanism includes two sets of first mounting seats and two sets of second mounting seats. The two sets of first mounting seats and second mounting seats are respectively installed at the bottom of the movable seat and the top of the fixed seat. A first roller is rotatably connected inside the first mounting seat. A drive motor for driving the first roller to rotate is installed at the rear end of the first mounting seat. A second roller is rotatably connected inside the second mounting seat. A traction belt is sleeved on the outer sides of the first roller and the second roller.

[0015] By adopting the above technical solution, when the two sets of drive motors start, they drive the first drum to rotate. The rotation of the first drum drives the traction belt to rotate, and the rotation of the traction belt drives the second drum to rotate. Thus, the pipe can be pulled by rotating the two sets of traction belts in different directions.

[0016] Optionally, the traction belt tensioning mechanism includes two sets of bidirectional threaded columns, which are rotatably connected inside the movable seat and the fixed seat, respectively. A servo motor for driving the bidirectional threaded columns to rotate is installed on the right side of both the movable seat and the fixed seat. Movable sleeves are screwed to both ends of the outer wall of the bidirectional threaded columns. The tops of the two sets of movable sleeves are fixedly connected to the ends of the first mounting seat and the second mounting seat opposite to the traction belt, respectively.

[0017] By adopting the above technical solution, when the servo motor is working, it drives the bidirectional threaded column to rotate. The rotation of the bidirectional threaded column drives the two sets of movable sleeves to move and move away from each other. When the two sets of movable sleeves move, they drive the first mounting seat and the second mounting seat to move and move away from each other, thereby tightening the traction belt and preventing the traction belt from becoming loose after long-term use.

[0018] Optionally, both the movable seat and the fixed seat have a crossbar connected to one end near the bidirectional threaded column inside, and the crossbar is arranged parallel to the bidirectional threaded column. Both ends of the crossbar are fitted with sliding sleeves, and a connecting block is fixed between the sliding sleeve and the movable sleeve.

[0019] By adopting the above technical solution, when the movable sleeve moves, the connecting block can drive the sliding sleeve to slide along the crossbar, thereby limiting the movable sleeve and effectively preventing the movable sleeve from rotating with the bidirectional threaded column.

[0020] In summary, this utility model has at least one of the following beneficial effects:

[0021] By coordinating the movable seat, pipe traction mechanism, fixed seat, and electric telescopic rod, the extension of the electric telescopic rod can drive the movable seat to move up and down, thereby facilitating the adjustment of the distance between the two sets of pipe traction mechanisms. This allows the two sets of pipe traction mechanisms to perform traction work on pipes of different specifications, improving the versatility of the device.

[0022] By using a combination of servo motor, movable sleeve, bidirectional threaded column, crossbar, sliding sleeve and connecting block, the distance between the first mounting base and the second mounting base can be adjusted, which facilitates tensioning of the traction belt, prevents the traction belt from loosening after long-term use, and thus improves the traction effect of the device on the pipe. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the traction belt tensioning mechanism of this utility model;

[0026] Figure 3 This is a top view of the fixed base structure of this utility model;

[0027] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0028] In the diagram: 1. Traction frame; 2. Moving seat; 3. Pipe traction mechanism; 301. First roller; 302. First mounting seat; 303. Drive motor; 304. Traction belt; 305. Second roller; 306. Second mounting seat; 4. Opening; 5. Pipe guiding mechanism; 501. Rocker wheel; 502. Horizontal plate; 503. Screw; 504. Movable plate; 505. Slider; 506. Vertical plate; 507. Slide groove; 508. Guide wheel; 6. Fixed seat; 7. Traction belt tensioning mechanism; 701. Servo motor; 702. Movable sleeve; 703. Bidirectional threaded column; 704. Horizontal bar; 705. Sliding sleeve; 706. Connecting block; 8. Electric telescopic rod; 9. Moving seat support mechanism; 901. Support rod; 902. Through hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0030] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 4This utility model provides an embodiment of a traction device for producing wear-resistant PVC-U pipes, comprising a traction frame 1 with openings 4 on both sides. A pipe guiding mechanism 5 is provided at the outer end of the traction frame 1 near the openings 4. The pipe guiding mechanism 5 includes a horizontal plate 502, which is fixedly installed at the outer end of the traction frame 1 near the openings 4. A screw 503 is screwed to the middle of the horizontal plate 502. A rocker wheel 501 is fixed to the top of the screw 503, and a movable plate 504 is rotatably connected to the bottom of the screw 503. Vertical plates 506 are fixedly installed at both the front and rear ends of the bottom of the movable plate 504, and guide wheels 508 are rotatably connected between the two sets of vertical plates 506. Rotating the rocker wheel 501 drives the screw 503 to rotate, which in turn drives the movable plate 504 to move. This, in turn, drives the guide wheels 508 to move towards the pipe through the vertical plates 506 until the guide wheels 508 contact the pipe, thus facilitating the guidance of both ends of the pipe and preventing the pipe from deviating.

[0031] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 4 A slider 505 is fixedly connected to the side of the movable plate 504 near the center of the traction frame 1. A groove 507 is provided on the outer side of the traction frame 1 to slide with the slider 505. When the movable plate 504 moves, it drives the slider 505 to slide inside the groove 507, thereby limiting the movable plate 504 so that the movable plate 504 can only move up and down.

[0032] Please refer to the attached diagram in the instruction manual. Figure 1 A fixed base 6 is fixedly installed on the inner bottom wall of the traction frame 1. An electric telescopic rod 8 is fixedly inserted through the middle of the top of the traction frame 1. A movable base 2 is fixedly installed at the bottom of the electric telescopic rod 8. A movable base support mechanism 9 is provided between the movable base 2 and the traction frame 1. The movable base support mechanism 9 includes two sets of support rods 901, which are fixedly installed at both ends of the top of the movable base 2. The tops of both sets of support rods 901 extend out of the traction frame 1. Through holes 902 that match the support rods 901 are opened at both ends of the top of the traction frame 1. When the movable base 2 is raised or lowered, it can drive the support rods 901 to slide inside the through holes 902, thereby making the movable base 2 more stable during the raising and lowering process.

[0033] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 3Both the movable seat 2 and the fixed seat 6 are equipped with traction belt tensioning mechanisms 7. At the ends of the two sets of traction belt tensioning mechanisms 7 that are close to each other, a pipe traction mechanism 3 is provided. The pipe traction mechanism 3 includes two sets of first mounting seats 302 and two sets of second mounting seats 306. The two sets of first mounting seats 302 and second mounting seats 306 are respectively installed at the bottom of the movable seat 2 and the top of the fixed seat 6. A first roller 301 is rotatably connected inside the first mounting seat 302. A drive motor 303 for driving the first roller 301 to rotate is installed at the rear end of the first mounting seat 302. A second roller 305 is rotatably connected inside the second mounting seat 306. A traction belt 304 is sleeved on the outer sides of both the first roller 301 and the second roller 305. When the two sets of drive motors 303 start, they drive the first roller 301 to rotate. The rotation of the first roller 301 drives the traction belt 304 to rotate, and the rotation of the traction belt 304 drives the second roller 305 to rotate. Thus, the pipe can be pulled in different directions by the rotation of the two sets of traction belts 304.

[0034] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 2 The traction belt tensioning mechanism 7 includes two sets of bidirectional threaded posts 703, which are rotatably connected inside the movable seat 2 and the fixed seat 6, respectively. Servo motors 701 for driving the bidirectional threaded posts 703 to rotate are installed on the right side of both the movable seat 2 and the fixed seat 6. Movable sleeves 702 are screwed to both ends of the outer wall of each bidirectional threaded post 703. The tops of the two sets of movable sleeves 702 are fixedly connected to the ends of the first mounting seat 302 and the second mounting seat 306 opposite to the traction belt 304, respectively. When the servo motors 701 operate, they drive the bidirectional threaded posts 703 to rotate. The rotation of the bidirectional threaded posts 703 drives the two sets of movable sleeves 702 to move and move away from each other. The movement of the two sets of movable sleeves 702 also drives the first mounting seat 302 and the second mounting seat 306 to move and move away from each other, thereby tightening the traction belt 304 and preventing it from loosening after prolonged use.

[0035] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 2 Both the movable seat 2 and the fixed seat 6 have a crossbar 704 fixedly connected to one end near the bidirectional threaded post 703, and the crossbar 704 is arranged parallel to the bidirectional threaded post 703. Sliding sleeves 705 are slidably fitted onto both ends of the outer side of the crossbar 704, and a connecting block 706 is fixed between the sliding sleeve 705 and the movable sleeve 702. When the movable sleeve 702 moves, the connecting block 706 can drive the sliding sleeve 705 to slide along the crossbar 704, thereby limiting the movable sleeve 702 and effectively preventing the movable sleeve 702 from rotating with the bidirectional threaded post 703.

[0036] Working principle: In use, the pipe to be pulled is entered into the traction frame 1 through the opening 4 at the left end and exited through the opening 4 at the right end. At this time, the pipe is located between the two sets of guide wheels 508 and the two sets of traction belts 304. According to the specifications of the pipe, the operator turns the rocker wheel 501. The rotation of the rocker wheel 501 drives the screw 503 to rotate. Since the screw 503 and the movable plate 504 are rotatably connected, and the movable plate 504 slides inside the slide groove 507 through the slider 505, the rotation of the screw 503 can drive the movable plate 504 to move towards the pipe. When the movable plate 504 moves, it drives the guide wheels 508 to move towards the pipe through the vertical plate 506 until the two sets of guide wheels 508 contact the pipe.

[0037] Next, the electric telescopic rod 8 is extended. When the electric telescopic rod 8 extends, it drives the movable seat 2 to move downward. The downward movement of the movable seat 2 drives the upper traction belt 304 to move downward until the two sets of traction belts 304 contact the pipe. At this time, the two sets of drive motors 303 are controlled to work. The two sets of drive motors 303 rotate in opposite directions. When the two sets of drive motors 303 work, they drive the two sets of first rollers 301 to rotate. The rotation of the two sets of first rollers 301 drives the two sets of traction belts 304 to rotate, which in turn drives the two sets of second rollers 305 to rotate. Since the two sets of traction belts 304 rotate in different directions, they can perform traction work on the pipe.

[0038] When the traction belt 304 becomes loose after prolonged use, the servo motor 701 is activated. When the servo motor 701 is working, it drives the bidirectional threaded column 703 to rotate. The rotation of the bidirectional threaded column 703 drives the two sets of movable sleeves 702 to move away. When the two sets of movable sleeves 702 move, they respectively drive the first mounting seat 302 and the second mounting seat 306 to move away, thereby tightening the traction belt 304 and further improving the traction effect of the device on the pipe.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A traction device for producing wear-resistant PVC-U pipes, comprising a traction frame (1), characterized in that: The traction frame (1) has openings (4) on both sides. A pipe guide mechanism (5) is provided at the outer end of the traction frame (1) near the opening (4). A fixed seat (6) is installed on the inner bottom wall of the traction frame (1). An electric telescopic rod (8) is inserted through the middle of the top of the traction frame (1). A movable seat (2) is installed at the bottom of the electric telescopic rod (8). A traction belt tensioning mechanism (7) is provided on both the movable seat (2) and the fixed seat (6). A pipe traction mechanism (3) is provided at the end of each of the two sets of traction belt tensioning mechanisms (7) that are close to each other.

2. The traction device for producing wear-resistant PVC-U pipes according to claim 1, characterized in that: The pipe guiding mechanism (5) includes a horizontal plate (502), which is installed on the outside of the traction frame (1) near the opening (4). A screw (503) is screwed into the middle of the horizontal plate (502). A rocker wheel (501) is fixed to the top of the screw (503). A movable plate (504) is rotatably connected to the bottom of the screw (503). Vertical plates (506) are installed at both the front and rear ends of the bottom of the movable plate (504). A guide wheel (508) is rotatably connected between the two sets of vertical plates (506).

3. The traction device for producing wear-resistant PVC-U pipes according to claim 2, characterized in that: The movable plate (504) is connected to a slider (505) on the side near the center of the traction frame (1), and a groove (507) is provided on the outer side of the traction frame (1) to slide in cooperation with the slider (505).

4. The traction device for producing wear-resistant PVC-U pipes according to claim 1, characterized in that: A moving seat support mechanism (9) is provided between the moving seat (2) and the traction frame (1). The moving seat support mechanism (9) includes two sets of support rods (901). The two sets of support rods (901) are respectively installed at both ends of the top of the moving seat (2). The top of the two sets of support rods (901) extends out of the traction frame (1). Both ends of the top of the traction frame (1) are provided with through holes (902) that match the support rods (901).

5. The traction device for producing wear-resistant PVC-U pipes according to claim 1, characterized in that: The pipe traction mechanism (3) includes two sets of first mounting seats (302) and two sets of second mounting seats (306). The two sets of first mounting seats (302) and second mounting seats (306) are respectively installed at the bottom of the movable seat (2) and the top of the fixed seat (6). The first mounting seat (302) is rotatably connected to the inside of a first roller (301). The rear end of the first mounting seat (302) is equipped with a drive motor (303) for driving the first roller (301) to rotate. The second mounting seat (306) is rotatably connected to the inside of a second roller (305). The outer sides of the first roller (301) and the second roller (305) are jointly sleeved with a traction belt (304).

6. The traction device for producing wear-resistant PVC-U pipes according to claim 5, characterized in that: The traction belt tensioning mechanism (7) includes two sets of bidirectional threaded columns (703). The two sets of bidirectional threaded columns (703) are rotatably connected inside the movable seat (2) and the fixed seat (6). The right side of the movable seat (2) and the fixed seat (6) are equipped with servo motors (701) for driving the bidirectional threaded columns (703) to rotate. Both ends of the outer wall of the bidirectional threaded column (703) are screwed with movable sleeves (702). The tops of the two sets of movable sleeves (702) are fixedly connected to the end of the first mounting seat (302) and the second mounting seat (306) away from the traction belt (304).

7. The traction device for producing wear-resistant PVC-U pipes according to claim 6, characterized in that: The movable seat (2) and the fixed seat (6) are both connected to a crossbar (704) at one end near the bidirectional threaded column (703), and the crossbar (704) is arranged parallel to the bidirectional threaded column (703). Both ends of the crossbar (704) are fitted with sliding sleeves (705), and a connecting block (706) is fixed between the sliding sleeve (705) and the movable sleeve (702).

Images