Production line of composite pipe with winding structure wall

Abstract

A production line of a composite pipe with a winding structure wall comprises a square pipe extruder and a square pipe winding forming device, and an axial pushing wheel set and a radial extruding wheel set are arranged on a support of the square pipe winding forming device aiming at a PE square pipe wound on a rotary drum; a first lap joint lip edge and a second lap joint lip edge are correspondingly arranged on the two sides of a PE square pipe extruded by the square pipe extruder, after the PE square pipe is wound on the rotary drum, the second lap joint lip edge located on the front side of the PE square pipe is inclined downwards, and the first lap joint lip edge located on the rear side of the PE square pipe is inclined upwards. The support of the square pipe winding forming device is further provided with a bonding material extrusion device used for adding mucilage glue or melting PE filling materials into a groove-shaped concave part between the first lap joint lip edge on the rear side of the PE square pipe and the side wall of the PE square pipe in a matched mode. The winding structure wall composite pipe manufactured by the production line has the advantages of high connection strength between adjacent PE square pipes, good sealing performance, good lateral supporting effect, difficulty in cracking and leakage, long service life and the like.

Description

Technical Field

[0001] The invention relates to a production line for wound structure-wall composite pipes, belonging to the technical field of wound structure-wall composite pipe production equipment. Background Art

[0002] As shown in the Chinese utility model patent "Authorization Announcement No.: CN206085644U; Authorization Announcement Date: April 12, 2017; Patent Name: Hollow Wall Wrapped Pipe Production Equipment", the hollow square tube is guided by a deviation correction guide wheel and spirally wound on a cylindrical winding mold. Before the hollow square tube is spirally wound on the winding mold, hot air is used to melt the side wall of the hollow square tube, and then the axial extrusion wheel is used to axially press and axially discharge the wound hollow square tube. At the same time, the radial extrusion wheel outside the winding mold is used to radially extrude the wound hollow square tube. The hollow wall wound tube after axial extrusion and radial extrusion is finally formed after cooling. The wound tube made by this scheme is formed by winding hollow square tubes, and the axially adjacent hollow square tubes are melted and bonded by the hollow square tubes' own materials. The hollow wall wound tube manufactured by this scheme has a simple structure, is easy to manufacture, and has a low cost. However, due to the influence of the structure of the pipe itself and the imperfect plastic welding process, the produced pipe has the defect of unreliable connection between the axial hollow square tubes. In actual use, it is easy to crack and leak, and the service life is not long enough. Summary of the invention

[0003] The purpose of the present invention is to provide a new winding structure wall composite pipe production line in view of the above-mentioned technical defects of the existing winding structure wall composite pipe and its production equipment. The new PE square pipe adopted by the production line has a simple structure and is easy to manufacture. It is not only convenient for overlapping and sealing between adjacent PE square pipes during spiral winding, but also can effectively avoid deformation of the PE square pipe body during subsequent axial and radial extrusion. During production, after the production line spirally winds the new PE square pipe and adds adhesive, the outer side of the wound PE square pipe is coated with PE strip, and finally axially extruded, radially extruded and cooled before shaping. The winding structure wall composite pipe manufactured by the production line has the advantages of high connection strength between adjacent PE square pipes, good sealing, good lateral support effect, not easy to crack and leak, long service life, etc.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A production line for winding structural wall composite pipes comprises a square pipe extruder and a square pipe winding forming device. An axial pushing wheel group and a radial extrusion wheel group are arranged on a bracket of the square pipe winding forming device for the PE square pipe wound on a rotating drum. A first overlapping lip and a second overlapping lip are arranged on both sides of the PE square pipe extruded by the square pipe extruder. When the PE square pipe is wound on the rotating drum, the second overlapping lip located on the front side of the PE square pipe is inclined downward, and the first overlapping lip located on the rear side of the PE square pipe is inclined upward. The bracket of the square pipe winding forming device is also provided with an adhesive extrusion device for adding adhesive or molten PE filling material to the groove-shaped concave between the first overlapping lip on the rear side of the PE square pipe and the side wall of the PE square pipe.

[0006] By adopting the above technical scheme, a production line for wound structural wall composite pipes is provided. The new PE square pipe adopted by the production line has a simple structure and is easy to manufacture. It is not only convenient for overlapping and sealing between adjacent PE square pipes during spiral winding, but also can effectively avoid deformation of the main body of the PE square pipe during subsequent axial and radial extrusion. The wound structural wall composite pipes manufactured by the production line have the advantages of high connection strength between adjacent PE square pipes, good sealing, good lateral support effect, not easy to crack and leak, and long service life.

[0007] The present invention is further configured as follows: through holes are provided on the first overlapping lips and the second overlapping lips on both sides of the PE square tube.

[0008] By adopting the above technical scheme, through holes are arranged on the overlapping lips on both sides of the PE square tube. By arranging the through holes with reasonable aperture sizes, it can be effectively ensured that the initial viscose or molten PE filler does not leak from the through holes, and it can also be ensured that when the PE square tube is axially and radially extruded and wound, the adhesive (viscosity and molten PE filler) in the first overlapping lip can smoothly flow between the side walls of the two PE square tubes, thereby achieving bonding and sealing between adjacent PE square tubes after spiral winding.

[0009] The present invention is further configured as follows: the through holes on the first overlapping lip at the rear side of the PE square tube are only arranged on the lip body close to the upper edge, and the through holes are evenly distributed on the lip body of the second overlapping lip at the front side of the PE square tube.

[0010] By adopting the above technical solution, the through hole on the first overlapping lip is only set on the lip body near the upper edge. This design can reduce the aperture accuracy requirements of the through hole, and achieve the adhesive material in the initial first overlapping lip without leakage. The adhesive material can be squeezed axially and radially, and can smoothly fill the space between the two PE square tube side walls to achieve bonding and sealing between the two PE square tubes after winding. This design reduces the manufacturing accuracy requirements and can effectively improve the product qualification rate and production efficiency.

[0011] The present invention is further configured as follows: an inner sealing lip is provided at the lower edge of the front side of the PE square tube.

[0012] By adopting the above technical solution, an inner sealing lip is provided at the lower edge of the front side of the PE square tube. Through axial extrusion, the inner sealing lip cooperates with the side wall of the adjacent PE square tube, which can effectively prevent the adhesive between the adjacent PE square tubes from overflowing onto the rotating drum and affecting the axial movement and feeding of the composite tube on the rotating drum.

[0013] The present invention is further configured as follows: a processing device for PE square tubes is arranged between the square tube extruder and the square tube winding device, the processing device comprising a first guide portion, a piercing portion and a second guide portion, the first square channel of the first guide portion, the inner cavity of the piercing portion and the second square channel of the second guide portion are connected in sequence, the top wall and the lower wall of the inner cavity are parallel to each other, lower vertical plates fixed on the upper wall hanging vertical plates and the lower wall are respectively arranged on both sides of the middle part of the inner cavity, and a piercing device is respectively arranged in the cavity outside the upper hanging vertical plates and the lower vertical plates.

[0014] By adopting the above technical scheme, a processing device for PE square tubes is added between the square tube extruder and the square tube winding device. The processing device is used to pierce the overlapping lips on both sides of the new PE square tube. The processing device is equipped with the square tube extruder and the square tube winding device, and can continuously realize the production operation of PE square tubes, which has the advantage of high production efficiency.

[0015] The present invention is further configured as follows: the piercing device comprises a piercing rotating drum with piercing needles on the outer surface and a driving device for driving the piercing rotating drum to rotate.

[0016] By adopting the above technical scheme, the specific scheme of the piercing device is limited. The piercing device of this structure can also provide pulling force for the PE square tube when piercing holes, which not only facilitates piercing, but also avoids the situation where the PE square tube is broken due to insufficient pulling.

[0017] The present invention is further configured as follows: the two piercing drums are driven by a unified driving device.

[0018] By adopting the above technical solution, a unified driving device is used to drive the two hole-piercing drums, thereby ensuring the low cost of the device.

[0019] The present invention is further configured as follows: a cooling device is provided between the processing device and the square tube extruder.

[0020] By adopting the above technical solution, a cooling device for the PE square tube is arranged between the processing device and the square tube extruder. The PE square tube is cooled first and then the hole punching operation is performed, which can effectively ensure the hole punching quality and hole punching effect.

[0021] The present invention is further configured as follows: a PE tape extrusion device is also provided on the bracket of the square tube winding device, and the PE tape extruded by the PE tape extrusion device is spirally wound on the outside of the PE square tube.

[0022] By adopting the above technical solution, a PE tape extrusion device is added, and the extruded PE tape is spirally wound on the outside of the wound PE square tube. The structural combination between the PE tape and the adjacent PE square tubes can further ensure that the adhesive is fully filled between the adjacent PE square tubes during axial and radial extrusion molding, which can further improve the connection strength and sealing effect between the adjacent PE square tubes and further ensure the quality of the composite tube.

[0023] The present invention is further configured as follows: a cooling device for the composite tube on the rotating drum is also provided on the bracket of the square tube winding and forming device.

[0024] By adopting the above technical solution, in the bracket cooling device of the square tube winding forming device, the cooling device can effectively accelerate the shaping of the composite tube and ensure the quality of the composite tube.

[0025] The main beneficial effects of the present invention are:

[0026] 1. The new PE square tube used in the production line of the present invention has a simple structure and is easy to manufacture. It is not only convenient for overlapping and sealing adjacent PE square tubes during spiral winding, but also can effectively avoid deformation of the PE square tube body during subsequent axial and radial extrusion. The wound structure wall composite tube manufactured by the production line has the advantages of high connection strength between adjacent PE square tubes, good sealing, good lateral support effect, not easy to crack and leak, and long service life.

[0027] 2. The production line of the present invention is provided with through holes on the overlapping lips on both sides of the PE square tube. By providing through holes with reasonable aperture sizes, it can effectively ensure that the initial viscose or molten PE filler does not leak from the through holes, and can also ensure that when the PE square tube is axially and radially extruded and wound, the adhesive (viscosity and molten PE filler) in the first overlapping lip can smoothly flow between the side walls of the two PE square tubes, thereby achieving bonding and sealing between adjacent PE square tubes after spiral winding.

[0028] 3. The production line of the present invention sets the through hole on the first overlapping lip only on the lip body near the upper edge. This design can reduce the aperture accuracy requirements of the through hole, and achieve the adhesive material in the initial first overlapping lip without leakage. The adhesive material can be squeezed axially and radially, and can smoothly fill the space between the two PE square tube side walls to achieve bonding and sealing between the two PE square tubes after winding. This design reduces the manufacturing accuracy requirements and can effectively improve the product qualification rate and production efficiency.

[0029] 4. The punching device used in the production line of the present invention can also provide pulling force for the PE square tube when punching holes, which not only facilitates the punching, but also avoids the situation where the PE square tube is broken due to insufficient pulling.

[0030] 5. The production line of the present invention is equipped with a PE tape extrusion device, and the extruded PE tape is spirally wound on the outside of the wound PE square tube. The structural combination of the PE tape and the adjacent PE square tubes can further ensure that the adhesive is fully filled between the adjacent PE square tubes during axial and radial extrusion molding, which can further improve the connection strength and sealing effect between the adjacent PE square tubes and further ensure the quality of the composite tube.

[0031] 6. The present invention sets an inner sealing lip at the lower edge of the front side of the PE square tube. Through axial extrusion, the inner sealing lip cooperates with the side wall of the adjacent PE square tube, which can effectively prevent the adhesive between the adjacent PE square tubes from overflowing onto the rotating drum and affecting the axial movement and feeding of the composite tube on the rotating drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the processing device in the present invention;

[0035] Figure 3 yes Figure 2 A top view of a horizontal section of a processing device;

[0036] Figure 4 yes Figure 2 Schematic diagram of the structure of the AA section;

[0037] Figure 5 This is a schematic diagram of the structure when the PE square tube is just wound on the drum;

[0038] Figure 6 It is a schematic diagram of the structure after the PE square tube is wound on the spreader and extruded axially and radially.

[0039] In the figure, 1. square tube extruder; 2. cooling device; 3. processing device; 31. first guide part; 311. first square channel; 32. piercing part; 321. inner cavity; 322. piercing drum; 3221. piercing needle; 323. driving device; 324. upper hanging vertical plate; 325. lower vertical plate; 33. second guide part; 331. second square channel; 4. PE square tube; 41. first overlapping lip; 42. second overlapping lip; 43. through hole; 44. inner sealing lip; 51. bracket; 52. guide structure; 53. adhesive extrusion device; 54. PE tape extrusion device; 541. PE tape; 55. axial pushing wheel group; 56. radial extrusion wheel group; 57. drum; 6. composite tube. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] like Figures 1 to 6 As shown, a production line for winding structural wall composite pipes includes a square pipe extruder 1, a cooling device 2, a processing device 3 and a square pipe winding forming device which are sequentially arranged. The bracket 51 of the square pipe winding forming device is provided with: a guide structure 52 for guiding the PE square pipe 4, an axial pushing wheel group 55 and a radial extrusion wheel group 56 for axially pushing and radially extruding the PE square pipe 4 wound on the rotating drum 57, respectively, an adhesive material extrusion device 53 for adding viscose or molten PE filling material to the side wall of the PE square pipe 4, a PE tape extrusion device 54 for winding a PE tape 541 around the outer side of the PE square pipe 4 wound on the rotating drum 57, and a cooling device for accelerating the cooling of the composite pipe 6 on the rotating drum 57.

[0043] The first overlapping lip 41 and the second overlapping lip 42 are correspondingly arranged on both sides of the PE square tube 4 extruded by the square tube extruder 1, and through holes 43 are arranged on the first overlapping lip 41 and the second overlapping lip 42 on both sides of the PE square tube 4, and an inner sealing lip 44 is arranged on the lower edge of the front side of the PE square tube 4. As an alternative, the through holes 43 on the first overlapping lip 41 on the rear side of the PE square tube 4 can also be arranged only on the lip body close to the upper edge, in which case, the lip body of the second overlapping lip 42 on the front side of the PE square tube 4 is still evenly distributed with through holes 43.

[0044] After the PE square tube 4 is wound on the drum 57, the second overlapping lip 42 located at the front side of the PE square tube 4 is inclined downward, and the first overlapping lip 41 located at the rear side of the PE square tube 4 is inclined upward. Before the PE square tube 4 is wound on the drum 57, the adhesive extrusion device 53 adds adhesive or molten PE filling material to the groove-shaped concave between the first overlapping lip 41 and the side wall of the PE square tube 4.

[0045] The processing device 3 includes a first guide part 31, a punching part 32 and a second guide part 33. The first square channel 311 of the first guide part 31, the inner cavity 321 of the punching part 32 and the second square channel 331 of the second guide part 33 are connected in sequence. The top wall and the lower wall of the inner cavity 321 are parallel to each other. The two sides of the middle of the inner cavity 321 are respectively provided with a lower vertical plate 325 fixed on the upper wall and the lower wall. A punching device is respectively arranged in the cavity 321 outside the upper vertical plate 324 and the lower vertical plate 325. The punching device includes a punching rotating cylinder 322 with a punching needle 3221 on the outer surface and a driving device 323 for driving the punching rotating cylinder 322 to rotate. The two punching rotating cylinders 322 are also driven by a unified driving device.

[0046] How it works:

[0047] The PE square tube 4 extruded by the square tube extruder 1 is cooled by the cooling device 2 and then punched by the processing device 3. After the punching is completed, the PE square tube 4 is guided by the guide structure 52 to realize spiral winding on the rotating drum 57. Before spiral winding, the adhesive extrusion device 53 adds adhesive or molten PE filling material to the groove-shaped concave between the first overlapping lip 41 and the side wall of the PE square tube 4. During spiral winding, the second overlapping lip 42 obliquely downward of the PE square tube 4 is inserted into the first overlapping lip 41 obliquely upward. Then, the PE strip 541 extruded by the PE strip extrusion device 54 is spirally wound on the outside of the PE square tube 4. Then, with the action of the axial pushing wheel group 55 and the radial extrusion wheel group 56, the PE square tube 4 and the PE strip 541 after spiral winding complete axial and radial forming. Finally, after cooling by the cooling device, the composite tube 6 is cooled and formed. The composite tube 6 after forming is axially unloaded under the axial pushing action of the axial pushing wheel group 55.

Claims

1. A production line for winding structural wall composite pipes, comprising a square pipe extruder (1) and a square pipe winding forming device, wherein an axial pushing wheel group (55) and a radial extrusion wheel group (56) are arranged on a bracket (51) of the square pipe winding forming device for a PE square pipe (4) wound on a rotating drum (57); characterized in that: The PE square tube (4) extruded by the square tube extruder (1) is provided with a first overlapping lip (41) and a second overlapping lip (42) on both sides thereof. When the PE square tube (4) is wound on a rotating drum (57), the second overlapping lip (42) located on the front side of the PE square tube (4) is inclined downward, and the first overlapping lip (41) located on the rear side of the PE square tube (4) is inclined upward. The bracket (51) of the square tube winding and forming device is also provided with an adhesive extrusion device (53) for adding adhesive or molten PE filling material to the groove-shaped concave between the first overlapping lip (41) on the rear side of the PE square tube (4) and the side wall of the PE square tube (4).

2. The production line of a wound structural wall composite pipe according to claim 1, characterized in that: Through holes (43) are provided on the first overlapping lip (41) and the second overlapping lip (42) on both sides of the PE square tube (4).

3. The production line of a wound structural wall composite pipe according to claim 2, characterized in that: The through holes (43) on the first overlapping lip (41) on the rear side of the PE square tube (4) are only arranged on the lip body close to the upper edge, and the through holes (43) are evenly distributed on the lip body of the second overlapping lip (42) on the front side of the PE square tube (4).

4. The production line of a wound structural wall composite pipe according to claim 3, characterized in that: The lower edge of the front side of the PE square tube (4) is provided with an inner sealing lip (44).

5. The production line of a wound structural wall composite pipe according to claim 2, characterized in that: A processing device (3) for PE square tubes (4) is arranged between the square tube extruder (1) and the square tube winding device, the processing device (3) comprising a first guide portion (31), a piercing portion (32) and a second guide portion (33), the first square channel (311) of the first guide portion (31), the inner cavity (321) of the piercing portion (32) and the second square channel (331) of the second guide portion (33) being connected in sequence, the top wall and the lower wall of the inner cavity (321) being parallel to each other, the middle part of the inner cavity (321) being respectively provided with a lower vertical plate (325) fixed to the upper wall hanging vertical plate (324) and the lower wall, and a piercing device is respectively arranged in the cavity (321) outside the upper vertical plate (324) and the lower vertical plate (325).

6. The production line for winding structural wall composite pipe according to claim 5, characterized in that: The piercing device comprises a piercing rotating drum (322) with piercing needles (3221) on its outer surface and a driving device (323) for driving the piercing rotating drum (322) to rotate.

7. The production line for winding structural wall composite pipe according to claim 6, characterized in that: The two perforating drums (322) are driven by a unified driving device.

8. The production line for winding structural wall composite pipe according to claim 7, characterized in that: A cooling device (2) is provided between the processing device (3) and the square tube extruder (1).

9. The production line for winding structural wall composite pipe according to claim 7, characterized in that: The bracket (51) of the square tube winding device is also provided with a PE tape extrusion device (54), and the PE tape material (541) extruded by the PE tape extrusion device (54) is spirally wound on the outer side of the PE square tube (4).

10. A production line for winding structural wall composite pipes according to claim 9, characterized in that: The bracket (51) of the square tube winding and forming device is also provided with a cooling device for the composite tube (6) on the rotating drum (57).

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