TWM455799U - Winding tube, parison tube for winding tube, and manufacturing device thereof - Google Patents

Description

Winding pipe, draft tube for winding pipe and manufacturing equipment thereof

The present invention relates to a raw material pipe for manufacturing a wound pipe, in particular to a hollow preform pipe having a ribbed strip, and a coiled coil which is wound by a coil and is connected by an electrode to form an axially extending winding. tube. The creation also provides a device for manufacturing the preform.

Conventional coiled tubing is usually buried underground as a drain or sewer. For the winding pipe which requires a larger diameter, in order to reduce the weight of the wound pipe and improve its practicability, the general industry uses hollow material pipes to manufacture. A conventional winding pipe is manufactured by winding a continuous hollow raw material pipe and an electrode into a tubular shape, and bonding the adjacent raw material pipes by a welding rod to fill the gap, so that the raw material pipe Together with the electrode, the tube wall of the wound tube is formed. It can be understood that the wound pipe made by winding the empty raw material pipe and the welding rod can reduce the weight but the rigidity of the ring is not good, and the heavy pressure from the road surface is easily deformed or even broken. In order to increase the ring rigidity of the wound pipe, it is generally overcome by increasing the material thickness of the hollow raw material pipe, which not only causes an increase in weight and cost, but also makes the economical utility of the wound pipe worse.

A number of related documents relating to the wound tube are known. For example, the utility model patent No. CN2447603Y discloses a high-strength plastic winding tube which is spirally wound from a wound profile, and the wound profiles are fused together. In addition, for example, Japanese Patent Application Laid-Open No. 3143303 discloses a spiral winding pipe making device and the like.

In addition, in order to overcome the problem of poor rigidity of the wound pipe ring, the creator of this case thought that the inner reinforcement of the hollow raw material pipe is the most ideal situation, and try to co-extrude the hollow raw material pipe together with the internal ribs in one piece. However, the cost of the integrally formed mold is very high, the extrusion speed is quite slow, and the external heat is cooled during the cooling process, that is, the outer material tube wall has been cooled, but the inner rib is still in a high temperature melting state. Can not be shaped, from the profile of the defective product is completely irregular, so there is still room for improvement.

In order to give the winding tube better practicability, one of the main purposes of the present invention is to provide a draft tube for a winding tube, comprising a tube body having a hollow interior extending a set length for spirally winding into a predetermined inner diameter. And a winding pipe of the outer diameter; wherein the cross section of the pipe body comprises at least one reinforcing rib strip at the inner portion thereof, and two ends thereof are integrally formed with the inner wall of the pipe body. Preferably, the integrally formed reinforcing rib strip is perpendicular to the horizontal plane, and at least includes a transverse rib strip perpendicularly intersecting the vertical reinforcing rib strip, the two ends of which are respectively opposite to the inner wall of the tubular body Integrated. According to this, the pressure resistance can be improved without increasing the thickness of the pipe wall.

Another object of the present invention is to provide a winding tube which is spirally wound into a tubular shape by using the above-mentioned hollow parison tube with ribbed strips and a side-by-side welding rod, and the adjacent parison tubes of one loop are fused by the welding rod It is fixed, whereby it is possible to manufacture a wound tube which is light in weight and excellent in ring rigidity with a minimum of plastic.

Another object of the present invention is to provide a flexible winding tube, which should The parison tube and the welding rod which are respectively horizontally extended on the two sides of the tube body and have a predetermined length of the side wing portion are spirally wound into a tubular shape, and the tube body and the side wing portion are used as the inner diameter of the winding tube, and the loop is adjacent to each other The side portions of the parison tube are overlapped with each other, and the welding rod is coupled to be integrally joined between the side flap portions of the adjacent parison tubes and the side flap portions. According to this, in addition to being able to manufacture a wound tube having a light weight and a good ring rigidity with a minimum of plastic, the wound tube has excellent flexibility and can be expanded in its use.

A further object of the present invention is to provide an apparatus for manufacturing a preform tube for winding a pipe, comprising at least: a first extruder for continuously molding a molten plastic through a first die having a rib strip of a specific shape; a cooler located on the outlet side of the rib strip of the first extruder for cooling the rib strip; a second extruder comprising at least one introducer and a second mold disposed at the first a downstream side of a cooler, through which the shaped rib strip is guided through the center of the second mold, and the molten plastic is molded by the second mold to surround the rib strip a second cooler located at an outlet side of the second extruder tube for cooling the tube body; and a tractor disposed on a downstream side of the second cooler for pulling the tube body Waiting.

First of all, the so-called blank tube refers to the intermediate material tube required for the manufacture of the wound tube. In order to reduce the weight of the wound tube, improve the ring stiffness and its economic practicability, those skilled in the art have read the specification. After that, you will learn about the many advantages of this creation. The technical features of the present invention will be further described below in conjunction with the drawings and embodiments. The drawings and embodiments are merely representative of the schematic and preferred examples, and are not intended to be used The details of the disclosure are to be understood by the following detailed description,

Fig. 1 is a first embodiment of a preform tube for winding a pipe; the first to eighth embodiments illustrate the first to eighth different structures of the preform tube in different cross-sectional views. According to the present invention, a parison tube 10 for winding a tube includes a tube body 10 having a hollow central portion 101 connected by a plurality of side walls, which are arbitrarily extended in the longitudinal direction for spirally winding along a circumference of a predetermined radius; Wherein, in the cross section of the pipe body 10, a pair of longitudinal side walls 102 which are perpendicular to the central portion 101, and a pair of horizontal side walls 103 which are horizontally spaced apart from the center portion 101, and two lateral side walls are provided. At least one vertical rib slat 104 parallel to the longitudinal side wall 102 is integrally formed between the 103s. Preferably, at least one horizontal rib strip 105 parallel to the lateral side wall 103 is integrally formed between the two longitudinal side walls 102, and the horizontal rib strip 105 intersects perpendicularly to the vertical rib strip 104.

Depending on the design, the vertical rib strip 104 or the horizontal rib strip 105 may be of a different configuration, for example, in Fig. 1a, a vertical rib is included in the central portion 101 of the tube 10. The strip 104; FIG. 1b shows that the central portion 101 of the tubular body 10 includes a vertical rib strip 104 and a horizontal rib strip 105 which intersect each other to form a cross shape; FIG. 1c shows the center of the tube body 10. The portion 101 includes a pair of vertical rib strips 104 and a horizontal rib strip 105 interposed therebetween to form an H-shaped shape. FIG. 1d shows that the center portion 101 of the tube body 10 includes a pair. The vertical rib strips 104 and the horizontal rib strips 105 intersect perpendicularly to each other to form a double cross shape; FIG. 1e shows the center portion 101 of the tube body 10 in two lateral directions At least a pair of V-shaped rib strips 106 connected at one end and having an opening at the other end are integrally formed between the side walls 103, and preferably the opening of the V-shaped rib strip 106 is wound. After the winding tube is formed, the opening thereof faces the center of the winding tube; the 1f-1h diagram shows that the lateral proportion of the tube body 10 is larger than the longitudinal ratio in the cross section, and the central portion 101 is respectively provided with a plurality of The vertical ribs 104, or the plurality of vertical ribs 104 intersect with a horizontal rib strip 105 to form a double cross shape or the like. It should be understood that in the hollow central portion 101 of the tubular body 10, there are more vertical rib slats 104 and horizontal rib slats 105, and the compressive strength is relatively greater.

Figs. 2 and 2a are for explaining a first embodiment in which the wound tube 1 wound by the parison tube 10 is applied. The winding tube 1 according to the present invention is composed of a parison tube 10 extending in the longitudinal direction and a side-by-side welding rod 20 which is spirally wound into a tubular shape along a circumference of a predetermined radius, and the welding rod 20 is connected to the tube A plurality of loops of adjacent parison tubes 10 are integrally joined to each other; wherein the parison tube 10 has a hollow central portion 101 and a plurality of side walls connected to and surrounding the outer periphery of the central portion 101. Included in the cross section thereof are a pair of longitudinal side walls 102 extending along the circumferential radial direction D of the central portion 101 along the predetermined radius, and a pair of lateral side walls 103 extending along the circumference R of the predetermined radius along the central portion 101, And at least one radial rib strip 104 parallel to the longitudinal side wall 102 is integrally formed between the two lateral side walls 103. More specifically, the winding tube 1 spirally winds the parison tube 10 and the electrode 20 into a tubular shape during the manufacturing process, so that the partial surface of the parison tube 10 and the portion of the electrode 20 together form the inner peripheral surface and the outer circumference of the wound tube 1. The surface is heated by heating one or both of the parison tube 10 and the electrode 20 during winding The electrode 20 is fusion bonded to the adjacent parison tube 10. The winding tube 1 can be manufactured by the parison tube 10 of any of the first to eighth configurations described above, and will not be described herein. According to this, it is possible to manufacture the wound pipe 1 which is light in weight and excellent in ring rigidity with a minimum of plastic.

Fig. 3 is a second embodiment of the parison tube for the winding tube; the third to third embodiments illustrate the first to third different structures of the preform tube by different cross-sectional views. The preform tube 10' of the present embodiment is different from the first embodiment of the above-described parison tube 10 in that, in the cross section of the parison tube 10', at the end which is the inner diameter of the wound tube, the tube body A side portion of the 10' is horizontally extended with a predetermined length of the side flap portion 103a; and at the end of the outer diameter of the wound tube, a truncated angle is formed between each of the two ends of the horizontal side wall 103 and the vertical side wall 102. As shown in the first embodiment of the parison tube 10, the vertical rib strip 104 or the horizontal rib strip 105 may be of a different configuration depending on the design; for example, in Fig. 3a, the tube body is shown. The central portion 101 of the 10' includes a vertical rib slat 104; and the third portion shows the central portion 101 of the tubular body 10' including a vertical rib slat 104 and a horizontal rib strip 105. Crossing each other to form a cross shape; and, in Fig. 3c, the center portion 101 of the tube body 10 is provided with at least a pair of V-shaped rib strips 106 connected at one end and having an opening at the other end between the two horizontal side walls 103. The inner wall of the tubular body 10' is integrally formed, and after the winding of the V-ribbed strip 106, the opening is directed toward the center of the wound tube.

Fig. 4 is a view for explaining a second embodiment of the wound tube 1' which is wound by applying the parison tube 10'. The winding tube 1' of the present embodiment is different from the winding tube 1 of the first embodiment described above in that the first embodiment of the winding tube 1 is The parison tubes 10 adjacent to each other are filled with the welding rod 20, so that the winding tube 1 has an inflexible property, and the utility is limited by the inflexibility. According to the present embodiment, the winding tube 1' is composed of a parison tube 10' extending in the longitudinal direction and a welding rod 20, and the parison tube 10' is spirally wound into a tubular shape along a circumference of a predetermined radius, and the welding rod 20 is connected to one The adjacent parison tubes 10' of the loops are integrally joined to each other. The embodiment is particularly characterized in that, in the cross section of the parison tube 10', at the end of the inner diameter of the winding tube 1', a side wall of a predetermined length is horizontally extended from both sides of the parison tube 10'. a portion 103a; and at the end of the outer diameter of the winding tube 1', a truncated angle is formed between each end of the lateral side wall 103 and the longitudinal side wall 102; wherein the side flap portions 103a of the adjacent parison tubes 10' are mutually Laminated together, the electrode 20 is connected between the side flap portion 103a of the adjacent parison tube 10' and the side flap portion 103a, and is integrally joined to each other. Therefore, one of the lateral side walls 103 of the parison tube 10' and the side flap portions 103a at both ends thereof together form an inner peripheral surface of the wound tube 1', and the adjacent parison tube 10' of the loop is in the wound tube 1 'The outer peripheral surface forms a wave that interacts with the trough. The winding tube 1' can be manufactured in the parison tube 10' of the first to third configurations of the second embodiment of the parison tube 10', which will not be described herein. According to this, in addition to being able to manufacture the wound pipe 1' which is light in weight and excellent in ring rigidity with a minimum of plastic, the wound pipe 1' has excellent flexibility and can be expanded in its use.

According to the present invention, the plastic can be used, for example, PE, high density PE, PVC, other known polymers, polymer materials, resins, rubber or plastic, or polyethylene plus calcium carbonate to increase its hardness, heat resistance and lowering. Material costs, etc. It should be understood that the mold of the second extruder can be introduced into the second extrusion in the above-mentioned ribbed strip as long as it is slightly changed. The machine passes through the center of the mold, so that the molten plastic is extruded around the outer wall of the rib strip by the mold, or it can be horizontally extended on both sides of the parison tube 10'. The side flap portion 103a of the length or the like.

In addition, as shown in Figures 5, 5a to 5c, it is used to describe the apparatus for manufacturing the parison tube 10, 10' for winding a pipe, which comprises at least: a first extruder 31 for melting the plastic Continuously forming a rib strip 104, 105 having a specific shape via a die 311; a first cooler 32 on the exit side of the rib strips 104, 105 of the first extruder 31 for the rib strip 104, 105 is cooled and shaped; a second extruder 33 includes at least one introducer 330 and a die 331 disposed on the downstream side of the first cooler 32, via which the shaped ribs 104, 105 is guided through the center of the mold 331, while the molten plastic is formed by the mold 331 to form a tube body 10, 10' around the rib strips 104, 105; a second cooler 34 is located at the second extruder The outlet side of the pipe body 10, 10' is for cooling the pipe body 10, 10'; a tractor 35 is disposed on the downstream side of the second cooler 34 for pulling the pipe body 10, 10' Waiting.

The above is only the preferred embodiment described by the present representative, and is not limited to the details disclosed in the drawings and the description. There are still many changes to those having ordinary knowledge in the technical field of the present invention, that is, without departing from the present disclosure. Equal changes and modifications to the scope of the patent application for creation shall remain covered by this creation.

1, 1'‧‧‧ winding tube

10, 10'‧‧‧ type blank tube / tube

101‧‧‧ Central Department

102‧‧‧Vertical side wall/longitudinal side wall

103‧‧‧Horizontal side wall/lateral side wall

103a‧‧‧Flanking

104‧‧‧Vertical ribs/radial ribs

105‧‧‧Horizontal ribs/transverse ribs

106‧‧‧V-type ribbed strip

20‧‧‧ welding rod

31‧‧‧first extruder

311‧‧‧Mold

32‧‧‧First cooler

33‧‧‧Second Extender

330‧‧‧ introducer

331‧‧‧Mold

34‧‧‧Second cooler

35‧‧‧ traction machine

Figure 1 is a view showing the first embodiment of the present invention. Fig. 1a~1h are respectively a cross-sectional view of the first to eighth different structures of the first embodiment of the parison tube; and Fig. 2 is a view showing the application of the present invention to the coiled tube by spiral winding 2A is a perspective view showing a winding tube of FIG. 2, a part of which has been cut away from the longitudinal direction; and FIG. 3 is a perspective view showing a second embodiment of the present invention; 3a-3c are respectively a cross-sectional view of the first to third different structures of the second embodiment of the parison tube; FIG. 4 is a view showing the winding tube made by applying the present invention to the coiled tube. 2 is a side view of a portion of the embodiment of the present invention; FIG. Figure 5 is a cross-sectional view from the 5a-5a direction of Figure 5; Figure 5b is a cross-sectional view showing the mold of the second extruder in Figure 5; and, Figure 5c is a cross-sectional view from the 5th-5c direction of Figure 5 .

1‧‧‧ winding tube

10‧‧‧Blank tube/tube

101‧‧‧ Central Department

102‧‧‧Vertical side wall/longitudinal side wall

103‧‧‧Horizontal side wall/lateral side wall

104‧‧‧Vertical ribs/radial ribs

105‧‧‧Horizontal ribs/transverse ribs

20‧‧‧ welding rod

Claims (15)

A parison tube for a winding tube, comprising a tube body having a hollow inner portion, extending a set length for spirally winding a winding tube having a predetermined inner diameter and an outer diameter; wherein: a cross section of the tube body Viewed, at least one reinforcing rib strip is included in the hollow interior, and both ends thereof are integrally formed with the inner wall of the tubular body. The parison tube for winding a pipe according to claim 1, wherein the integrally formed reinforcing rib strip is perpendicular to a horizontal plane. The parison tube for winding a pipe according to the second aspect of the patent application, wherein the hollow interior of the pipe body comprises at least one transverse rib strip perpendicularly intersecting the vertical reinforcing rib strip, the two ends of which are respectively associated with the tube The inner wall of the body is integrally formed. The parison tube for winding a pipe according to the first aspect of the invention, wherein at least a pair of V-shaped rib strips which are connected at one end and open at the other end, and an inner wall of the tube body are provided in the hollow interior of the tube body. Formed integrally, and after the V-ribbed strip is wound into the wound tube, its opening is toward the center of the wound tube. The parison tube for a wound pipe according to any one of claims 1 to 4, wherein in the cross section of the pipe body, at the end of the inner diameter of the winding pipe, horizontally extending from both sides of the pipe body There is a wing portion of a predetermined length. An apparatus for manufacturing a parison tube for winding a pipe according to any one of claims 1 to 5, which comprises at least: a first extruder for continuously molding the molten plastic through a first die having a rib strip of a specific shape; a first cooler located at an exit side of the rib strip of the first extruder for The rib strip is cooled and shaped; a second extruder includes at least one guide and a second mold disposed on a downstream side of the first cooler, and the ribbed strips are guided through the guide Passing through the center of the second mold, while forming a tube body around the rib strip by the second mold; a second cooler is located at the outlet side of the second extruder tube body for Cooling the tube; a tractor disposed on a downstream side of the second cooler for drawing the tube out. A winding tube is jointly wound by a parison tube continuously extending a set length and a side-by-side welding rod into a spiral tube having a predetermined inner and outer diameter, and the welding rod fuses adjacent parison tubes into one body; The parison tube has a hollow central portion, and at least a centrally formed reinforcing rib strip is included in the central portion of the parison tube. The winding tube of claim 7, wherein the reinforcing rib strips are respectively formed with radial ribs integrally formed with the inner wall of the parison tube. The winding pipe of claim 8, wherein the central portion of the parison tube comprises at least one transverse rib strip perpendicularly intersecting the radial rib strip, the two ends of which are respectively disposed inside the parison tube The walls are formed integrally. The winding tube of claim 7, wherein at least a pair of V-shaped ribs are formed at the center of the parison tube and the other end is formed with an opening, and the V-shaped rib is integrated with the inner wall. Formed and opened It is toward the center of the winding tube. A wound tube according to any one of claims 7 to 10, wherein a partial surface of the parison tube and a portion of the electrode jointly form an inner peripheral surface and an outer peripheral surface of the wound tube. The winding tube according to any one of claims 7 to 10, wherein a cross section of the parison tube is at an end of the inner diameter of the winding tube, and a predetermined length is horizontally extended from both sides of the parison tube Flank. The winding tube of claim 12, wherein the preform tube and the welding rod are wound into a tubular shape, and the side flap portions of the adjacent parison tubes are overlapped with each other, the welding rod being connected to the adjacent parison tube The side flaps and the side flaps are integrally joined to each other. A winding tube according to claim 13 wherein the partial surface of the preform tube and the side flap portions on both sides thereof together form an inner peripheral surface of the wound tube. The winding tube of claim 14, wherein the parison tube is wound adjacently in a circle, and a wave shape in which a peak interacts with a trough is formed on an outer circumferential surface of the winding tube.