Polyethylene pipe production equipment and production process

Abstract

This invention relates to the field of polyethylene pipe technology, specifically to a polyethylene pipe production equipment and process; comprising: a base, a fixed block, a rotary cutting blade, a support rod, a fixed shaft, a clamp, an adjusting device, a first groove, an adjusting block, an adjusting shaft, an annular groove, an L-shaped groove, and an arc-shaped clamp; the polyethylene pipe is fitted onto the fixed shaft, and an adjusting shaft of suitable diameter is selected according to the diameter of the pipe to be cut. The adjusting shaft is inserted into the center position of the fixed rotating shaft, and the adjusting block is located in the first groove. The adjusting block is pushed outward to expand the outer diameter of the adjusting block so that the outer diameter of the adjusting block matches the inner diameter of the polyethylene pipe. The clamp moves towards the side of the L-shaped groove parallel to the fixed shaft, close to the fixed shaft, and clamps the fixed shaft. The position of the rotary blade is adjusted according to the required length of the polyethylene pipe. The motors of the clamp and the rotary blade are started, and the clamp drives the fixed shaft to rotate. The polyethylene pipe is rotated by the fixed shaft, and the rotary cutting blade cuts the polyethylene pipe.

Description

Technical Field

[0001] This invention relates to the field of polyethylene pipe technology, specifically to polyethylene pipe production equipment and production process. Background Technology

[0002] Polyethylene is a series of resins produced by various processes, possessing diverse structures, properties, and applications. Polyethylene pipes are used in pipelines for urban gas, urban water supply, urban drainage, and building water supply. The main types include ordinary polyethylene pipes, cross-linked polyethylene pipes, spiral wound polyethylene pipes, double-wall corrugated polyethylene pipes, flame-retardant polyethylene for wire and cable conduits, high-density polyethylene outer sheaths for insulated pipelines, polyethylene pipes for gas pipelines, and silicon core pipes. The process flow is as follows: raw material preparation, feeding and extrusion, cooling and sizing, bow drawing, marking, length measurement and cutting, inspection, and packaging.

[0003] Currently, when polyethylene pipe production equipment cuts pipes, the inner wall of the polyethylene pipe is hollow due to the lack of internal support. The outer wall experiences uneven stress during the cutting process, which can easily lead to pipe deformation and uneven or rough cuts. Furthermore, the fixed shaft cannot be adjusted in size; one type of shaft can only accommodate one type of pipe. Each time a different type of polyethylene pipe is used, a different type of fixed shaft must be used, making the operation cumbersome.

[0004] In view of this, the present invention proposes a polyethylene pipe production equipment and production process, which solves the above problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the problems in existing technologies, this invention proposes a polyethylene pipe production equipment and production process.

[0006] The technical solution adopted by this invention to solve its technical problem is: a polyethylene pipe production equipment, including a base, a fixed block, and a rotating cutting blade, wherein the fixed block is disposed at one end of the base, and the rotating cutting blade is disposed at the upper end of the fixed block via a support rod, comprising,

[0007] A fixed shaft, which is hollow and located on one side of the fixed block, is used to support the inner wall of the polyethylene pipe;

[0008] A clamp is movably connected to the base on the side away from the fixed block. The clamp is rotated by a motor on one side and clamps the outer wall of the polyethylene pipe on the fixed shaft.

[0009] An adjustment device is disposed inside the fixed shaft and is used to adjust the size of the outer wall of the fixed shaft.

[0010] Preferably, the adjusting device includes,

[0011] Slot No. 1 is uniformly and continuously opened on the fixed shaft;

[0012] An adjusting block, one end of which is slidably connected to a first groove; one end of which extends into the interior of a fixed shaft, and the adjusting blocks evenly distributed inside the fixed shaft are arranged in a circular ring at one end;

[0013] An adjusting shaft, the diameter of which is smaller than the inner wall of the fixed shaft, extends into the center of the fixed shaft 5, and the inner wall of the adjusting shaft pushes one end of the adjusting block located inside the fixed shaft.

[0014] Preferably, annular grooves are evenly formed on the fixed shaft, and each annular groove is located between adjacent adjusting blocks.

[0015] Preferably, the base has an L-shaped groove at the end away from the fixing block, and the clamp is slidably connected in the L-shaped groove via a rod.

[0016] Preferably, the clamp is provided with an arc-shaped clamping plate at one end of the polyethylene pipe, and the side of the arc-shaped clamping plate near the polyethylene pipe is made of rubber.

[0017] Preferably, the arc-shaped clamp has a strip groove on the side near the polyethylene pipe;

[0018] Preferably, the outer walls of the fixed shaft and the adjusting block are both provided with a frosted layer;

[0019] Preferably, one end of the adjusting block located at both ends of the fixed shaft is arc-shaped, and one end of the adjusting shaft is arc-shaped. When the adjusting shaft is adjusted, the arc-shaped adjusting block and the adjusting shaft cooperate with each other.

[0020] Preferably, the support rod on the rotating cutting blade is a telescopic rod;

[0021] A manufacturing process for polyethylene pipe production equipment, applicable to any of the aforementioned polyethylene pipe production equipment, and comprising the following steps:

[0022] S1: The raw materials are dried, and the processed raw materials are fed into the extrusion process. The extruded pipes are then vacuum sizing and water-cooled.

[0023] S2: Using the polyethylene pipe production equipment described in this invention, the polyethylene pipe is fixed on a fixed shaft by a clamp, the clamp motor is started, the clamp begins to drive the pipe to rotate on the surface of the fixed shaft, and then the rotating cutting blade begins to rotate and is pushed downward through the telescopic rod to cut the pipe;

[0024] S3: After the pipes are cut, they are inspected for quality, then packaged and stored, completing the production steps of polyethylene pipes.

[0025] The beneficial effects of this invention are as follows:

[0026] 1. The polyethylene pipe production equipment and process described in this invention, by adjusting the size of the fixed shaft through an adjusting device, allows the diameter of the fixed shaft to be adjusted to match the inner diameter of the polyethylene pipe, making it suitable for cutting polyethylene pipes of various diameters. This expands the applicable range of polyethylene pipe cutting steps and facilitates the production and processing of polyethylene pipes. Furthermore, by traction and supporting the pipe on the fixed shaft, it avoids uneven stress on the outer wall of the polyethylene pipe during cutting when the inner wall is unsupported, which would otherwise lead to deformation of the polyethylene pipe and uneven or irregular cuts.

[0027] 2. The polyethylene pipe production equipment and process described in this invention involves pulling a polyethylene pipe outward using a fixed block. When the pipe reaches the end of the fixed shaft away from the fixed block, a clamp holds one end of the polyethylene pipe. A motor drives the clamp to rotate, causing the polyethylene pipe to rotate as well. At this time, the pipe is cut. Since the polyethylene pipe is being cut while rotating, the rotating cutting blade does not compress the polyethylene pipe, thus avoiding pipe deformation. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Figure 1 This is a process flow diagram of the present invention;

[0030] Figure 2 This is a perspective view of the present invention;

[0031] Figure 3 This is a perspective view of the adjusting device of the present invention;

[0032] Figure 4 This is a structural view of the adjusting device of the present invention;

[0033] Figure 5 yes Figure 2 Enlarged view of part A in the middle;

[0034] In the diagram: base 1, rod 11, fixing block 2, rotating cutting blade 3, support rod 4, fixing shaft 5, clamp 6, adjusting device 7, groove 71, adjusting block 72, adjusting shaft 73, annular groove 8, L-shaped groove 9. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 3 As shown;

[0037] A polyethylene pipe production device includes a base 1, a fixing block 2, and a rotary cutting blade 3. The fixing block 2 is disposed at one end of the base 1, and the rotary cutting blade 3 is disposed on the upper end of the fixing block 2 via a support rod 4.

[0038] A fixed shaft 5 is hollow and located on one side of the fixed block 2. The fixed shaft 5 is used to support the inner wall of the polyethylene pipe.

[0039] The clamp 6 is movably connected to the side of the base 1 away from the fixed block 2. The clamp 6 is rotated by a motor on one side and clamps the outer wall of the polyethylene pipe on the fixed shaft 5.

[0040] An adjusting device 7 is disposed inside the fixed shaft 5 and is used to adjust the size of the outer wall of the fixed shaft 5.

[0041] In use, when the polyethylene pipe production process reaches the pipe cutting stage after the printing and marking steps, the diameter of the fixed shaft 5 is adjusted by the adjusting device 7 to match the inner diameter of the polyethylene pipe. This makes it suitable for cutting polyethylene pipes of various diameters, expanding the scope of application for polyethylene pipe cutting and facilitating the production and processing of polyethylene pipes. The pipe is then pulled and supported on the fixed shaft 5, preventing uneven stress on the outer wall of the polyethylene pipe during cutting, which would otherwise occur if the inner wall of the polyethylene pipe is unsupported, leading to deformation and irregular or uneven cuts. The fixed block 2 pulls the polyethylene pipe outwards. When the pipe reaches the end of the fixed shaft 5 furthest from the fixed block 2, the clamp 6 clamps one end of the polyethylene pipe. The motor drives the clamp 6 to rotate, causing the polyethylene pipe to rotate as well. Cutting then occurs because the polyethylene pipe is being cut while rotating, and the rotating cutting blade 3 does not compress the polyethylene pipe, preventing deformation. Finally, the cut polyethylene pipe can be inspected and packaged.

[0042] In one specific embodiment of the present invention, the adjusting device 7 includes...

[0043] The first slot 71 is evenly and continuously opened on the fixed shaft 5;

[0044] Adjusting block 72, one end of which is slidably connected to groove 71; one end of the adjusting block 72 extends into the fixed shaft 5, and the adjusting blocks 72 evenly distributed inside the fixed shaft 5 are arranged in a ring shape at one end.

[0045] An adjusting shaft 73, the diameter of which is smaller than the inner wall of the fixed shaft 5, extends into the center of the fixed shaft 5, and the inner wall of the adjusting shaft 73 pushes one end of the adjusting block 72 located inside the fixed shaft 5;

[0046] When in use, select an adjustment shaft 73 with a suitable diameter for the pipe to be cut, insert the adjustment shaft 73 into the center of the fixed shaft 5, and place the adjustment block 72 in the first groove 71. The outer wall of the adjustment shaft 73 pushes the adjustment block 72 to expand outward, so that the outer diameter of the adjustment block 72 matches the inner diameter of the polyethylene pipe. The outer ring of the adjustment block 72 supports the inner wall of the polyethylene pipe, so that the polyethylene pipe can be tightly fixed on the fixed shaft 5.

[0047] In one specific embodiment of the present invention, annular grooves 8 are evenly provided on the fixed shaft 5, and each annular groove 8 is located between adjacent adjusting blocks 72.

[0048] When in use, if the diameter of the polyethylene pipe to be cut is small and the fixed shaft 5 does not need to be adjusted by the adjustment device 7, the rotating cutting blade 3 cuts the polyethylene pipe. When the rotating cutting blade 3 cuts through the polyethylene pipe and breaks through the inner wall of the polyethylene pipe, the position of the rotating cutting blade 3 is in the annular groove 8, so as to avoid the rotating cutting blade 3 directly contacting the fixed shaft 5 after cutting through the polyethylene pipe, which would cause wear of the rotating cutting blade 3 and damage to the fixed shaft 5.

[0049] In one specific embodiment of the present invention, the base 1 is provided with an L-shaped groove 9 at the end away from the traction frame, and the clamp 6 is slidably connected in the L-shaped groove 9 by a first rod 11.

[0050] In use, when the polyethylene pipe needs to be fixed on the fixed shaft 5, the clamp 6 slides away from the fixed shaft 5 in the L-shaped groove 9, so that there is no obstruction between the polyethylene pipe and the fixed shaft 5. At this time, the polyethylene pipe is pushed in and put on the fixed shaft 5. Then the clamp 6 slides closer to the fixed shaft 5 in the L-shaped groove 9. When the clamp 6 reaches the right angle turning point of the L-shaped groove 9, it moves closer to the polyethylene pipe in the L-shaped groove. The distance of movement can be adjusted according to the length of the pipe.

[0051] In one specific embodiment of the present invention, the clamp 6 is provided with an arc-shaped clamping plate 61 at one end of the polyethylene pipe, and the side of the arc-shaped clamping plate 61 near the polyethylene pipe is made of rubber.

[0052] In use, after the polyethylene pipe is fitted onto the fixed shaft 5, the clamp 6 moves towards the side of the L-shaped groove 9 closer to the fixed shaft 5. At this time, the clamp 6 clamps the fixed shaft 5. Since the end of the clamp 6 that holds the fixed shaft 5 is an arc-shaped clamping plate 61, which fits the shape of the outer periphery of the fixed shaft 5, the clamp 6 and the fixed shaft 5 can make close contact. Therefore, the clamp 6 can clamp the fixed shaft 5 more firmly, preventing the clamp 6 from loosening during operation. Since the side of the arc-shaped clamping plate 61 near the polyethylene pipe is made of rubber, the rubber material itself has a large friction, which increases the friction with the fixed shaft 5, making the clamp 6 clamp the fixed shaft 5 more firmly. In addition, the rubber material is relatively soft, preventing the clamp 6 from causing wear to the fixed shaft 5.

[0053] In one specific embodiment of the present invention, the arc-shaped clamp 61 has a wavy groove on the side near the polyethylene pipe.

[0054] In use, after the polyethylene pipe is fitted onto the fixed shaft 5, the clamp 6 moves towards the side of the L-shaped groove 9 closer to the fixed shaft 5. At this time, the clamp 6 clamps the fixed shaft 5. Since the curved clamp 61 has a wavy groove on the side closer to the polyethylene pipe, the roughness of the contact surface between the curved clamp 61 and the fixed shaft 5 is increased, which increases the friction between the curved clamp 61 and the fixed shaft 5. This prevents the fixed shaft 5 from becoming loose during the operation of the clamp 6, and makes the clamp 6 and the fixed shaft 5 clamp more firmly.

[0055] In one specific embodiment of the present invention, the outer walls of the fixed shaft 5 and the adjusting block 72 are both provided with a frosted layer.

[0056] When in use, if the diameter of the polyethylene pipe to be cut is small, the fixed shaft 5 does not need to be adjusted by the adjusting device 7. The fixed shaft 5 can remain stationary, allowing the clamp 6 to hold the polyethylene pipe and rotate it on the fixed shaft 5. Since the outer walls of the fixed shaft 5 and the adjusting block 72 are provided with a frosted layer, during the rotation process, the frosted layer on the outer walls of the fixed shaft 5 and the adjusting block 72 continuously rubs against the inner wall of the polyethylene pipe, polishing the inner wall of the pipe and making the inner wall of the pipe smoother.

[0057] In one specific embodiment of the present invention, one end of the adjusting block 72 located at both ends of the fixed shaft 5 is arc-shaped, and one end of the adjusting shaft 73 is arc-shaped. When the adjusting shaft 73 adjusts the adjustment, the arc-shaped adjusting block 72 and the adjusting shaft 73 cooperate with each other.

[0058] In use, depending on the diameter of the polyethylene pipe to be cut, insert the appropriately sized adjusting shaft 73 into the fixed shaft 5, and push the adjusting block 72 to move outward, so that the arc-shaped setting on the outer side of the adjusting block 72 is attached to the inner wall of the polyethylene pipe. Because the outer side of the adjusting block 72 is arc-shaped, the adjusting block 72 can fit more precisely with the inner wall of the polyethylene pipe, avoiding any loosening. Because one side of the adjusting shaft 73 is arc-shaped, it is more convenient to insert the adjusting shaft 73 into the adjusting block 72.

[0059] In one specific embodiment of the present invention, the support rod on the rotating cutting blade 3 is a telescopic rod;

[0060] In use, when the polyethylene pipe is fitted onto the fixed shaft 5, the cutting distance of the rotating cutting blade 3 can be adjusted by adjusting the length of the telescopic rod. The length of the telescopic rod can be freely adjusted, thereby controlling the position of the rotating cutting blade 3 at one end of the telescopic rod. Then, the rotating cutting blade 3 is driven to rotate by the motor to cut polyethylene pipes of various specifications and lengths.

[0061] 10. A manufacturing process for polyethylene pipe production equipment, applicable to any of the polyethylene pipe production equipment described above, and comprising the following steps:

[0062] S1: The raw materials are dried, and the processed raw materials are fed into the extrusion process. The extruded pipes are then vacuum sizing and water-cooled.

[0063] S2: Using the polyethylene pipe production equipment described in this invention, the polyethylene pipe is fixed on the fixed shaft 5 by the clamp 6, the motor on the clamp 6 is started, the clamp 6 starts to drive the polyethylene pipe to rotate on the surface of the fixed shaft 5, and then the rotating cutting blade 3 starts to rotate and is pushed down through the telescopic rod to cut the polyethylene pipe.

[0064] S3: After the pipes are cut, they are inspected for quality, then packaged and stored, completing the production steps of polyethylene pipes.

[0065] The specific workflow is as follows:

[0066] The polyethylene pipe is fitted onto the fixed shaft 5. An adjusting shaft 73 of suitable diameter is selected based on the pipe diameter to be cut. The adjusting shaft 73 is inserted into the center of the fixed shaft 5, with the adjusting block 72 positioned within the first groove 71. The adjusting block 72 is pushed outwards to expand its outer diameter to match the inner diameter of the polyethylene pipe. The clamp 6 moves towards the longer groove of the L-shaped groove 9, closer to the fixed shaft 5, clamping the fixed shaft 5. Then, the rotation is adjusted according to the required length of the polyethylene pipe via the telescopic rod connected to the rotating cutting blade 3. Rotate the cutting blade 3 to the correct position. Once the cutting blade 3 is in the correct position, start the clamp 6 and the motor of the cutting blade 3. The clamp 6 drives the fixed shaft 5 to rotate, and the polyethylene pipe is rotated by the fixed shaft 5. The cutting blade 3 cuts the polyethylene pipe. After cutting, the clamp 6 releases the fixed shaft 5 and moves to the side of the longer groove of the L-shaped groove 9 away from the fixed shaft 5. After reaching the right-angle turning point of the L-shaped groove 9, it moves to the side of the shorter groove of the L-shaped groove 9 away from the fixed shaft 5. At this time, the cut polyethylene pipe is removed.

[0067] Front, back, left, right, top, and bottom are all as shown in the attached diagrams in the instruction manual. Figure 2 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0068] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of 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.

Claims

1. A polyethylene pipe production equipment, comprising a base (1), a fixing block (2), and a rotating cutting blade (3), wherein the fixing block (2) is disposed at one end of the base (1), and the rotating cutting blade is disposed at the upper end of the fixing block (2) via a support rod (4), characterized in that: The system includes: a fixed shaft (5), which is hollow and located on one side of the fixed block (2), and is used to support the inner wall of the polyethylene pipe; the fixed shaft (5) has evenly spaced annular grooves (8), each annular groove (8) being located between adjacent adjusting blocks (72); and a clamp (6), which is movably connected to the side of the base (1) away from the fixed block (2), and has an arc-shaped clamping plate (61) at the end of the clamp (6) that holds the polyethylene pipe. The side of the arc-shaped clamp (61) closest to the polyethylene pipe is made of rubber; the clamp (6) is rotated by a motor on one side, and the clamp (6) clamps the outer wall of the polyethylene pipe on the fixed shaft (5); the base (1) is provided with an L-shaped groove (9) at the end away from the traction frame, and the clamp (6) is slidably connected in the L-shaped groove (9) through a rod (11). When the clamp (6) reaches the right angle turning point of the L-shaped groove (9), it moves towards the side of the L-shaped groove closest to the polyethylene pipe. The distance of movement can be adjusted according to the length of the pipe. An adjusting device (7) is disposed inside the fixed shaft (5) and is used to adjust the size of the outer wall of the fixed shaft (5). The adjusting device (7) includes: a first groove (71) which is uniformly opened through the fixed shaft (5); an adjusting block (72) with one end slidably connected to the first groove (71); and one end of the adjusting block (72) extending into the fixed shaft (5), and the adjusting blocks (72) being uniformly distributed inside the fixed shaft (5). The ends are distributed in a circular ring; one end of the adjusting block (72) located at both ends of the fixed shaft (5) is arc-shaped, and one end of the adjusting shaft (73) is arc-shaped. When the adjusting shaft (73) adjusts the adjustment, the arc-shaped adjusting block (72) and the adjusting shaft (73) cooperate with each other; the diameter of the adjusting shaft (73) is smaller than the inner wall of the fixed shaft (5), the adjusting shaft (73) extends into the center position of the fixed rotating shaft, and the inner wall of the adjusting shaft (73) pushes one end of the adjusting block (72) located in the fixed shaft (5); The outer walls of the fixed shaft (5) and the adjusting block (72) are both provided with a frosted layer.

2. The polyethylene pipe production equipment according to claim 1, characterized in that: The arc-shaped clamp (61) has a strip groove on the side near the polyethylene pipe.

3. The polyethylene pipe production equipment according to claim 1, characterized in that: The support rod (4) on the rotating cutting blade (3) is a telescopic rod.

4. A polyethylene pipe manufacturing process, characterized in that: The process is applicable to the polyethylene pipe production equipment according to any one of claims 1-3, and the process includes the following steps: S1: The raw materials are dried, and the processed raw materials are fed into the extrusion process. The extruded pipes are then vacuum sizing and water-cooled. S2: Using the polyethylene pipe production equipment described in this invention, the polyethylene pipe is fixed on the fixed shaft (5) by the clamp (6), the clamp (6) motor is started, the clamp (6) starts to drive the pipe to rotate on the surface of the fixed shaft (5), and then the rotating cutting blade starts to rotate and is pushed down through the telescopic rod to cut the pipe; S3: After the pipes are cut, they are inspected for quality, then packaged and stored, completing the production steps of polyethylene pipes.

Images