WO2012079516A1

WO2012079516A1 - Method and device for cutting steel-reinforced spirally-wound polyurethane pipe

Info

Publication number: WO2012079516A1
Application number: PCT/CN2011/084029
Authority: WO
Inventors: 郑能欢; 肖日君
Original assignee: 华瀚科技有限公司
Priority date: 2010-12-17
Filing date: 2011-12-15
Publication date: 2012-06-21
Also published as: CN102085581B; CN102085581A

Abstract

Disclosed are a method and device for cutting steel-reinforced spirally-wound polyurethane pipe. The method for cutting steel-reinforced spirally-wound polyurethane pipe comprises the following steps: A, filling and leveling the spiral reinforcement (101) at a location where the steel-reinforced spirally-wound polyurethane pipe (100) requires cutting so that the outer wall of the pipe at the cutting location forms a smooth shape; B, cutting the steel-reinforced spirally-wound polyurethane pipe (100) at the location where cutting is required. The device for cutting steel-reinforced spirally-wound polyurethane pipe comprises: a pipe forming device (1), a plastic extrusion machine (2), a water-spraying cooling apparatus (3) and a progressive cutting apparatus (4); the plastic extrusion machine (2), the water-spraying cooling apparatus (3) and the progressive cutting apparatus (4) are sequentially arranged along the pipe-extrusion direction of the steel-reinforced spirally-wound polyurethane pipe (100). Filling and leveling the spiral reinforcement (101) on the outer wall of the steel-reinforced spirally-wound polyurethane pipe (100) prior to cutting enables the steel-reinforced spirally-wound polyurethane pipe (100) to be cut so as to form an even end, avoids saw blade breakage, and facilitates the real-time and online cutting of the steel-reinforced spirally-wound polyurethane pipes during manufacturing.

Description

Cutting method of plastic steel winding pipe and cutting device thereof

Technical field

The present invention relates to cutting, and more particularly to a method of cutting a plastic steel wound pipe in cutting and a cutting device therefor.

Background technique

Plastic-steel-wound pipe, also known as polyethylene-plastic steel-wound pipe, is made of steel-plastic composite profiled strip by spiral wound welding. Because the steel-wound tube perfectly combines all the advantages of the ordinary pressureless plastic tube and strengthens the high strength of the steel rib, it can fully meet the needs of engineering applications and can be widely applied to various corrosion or non-corrosive properties. The gravity of the medium is transported by gravity. At present, the steel-wound pipe needs to be cut and transported according to the fixed length in the production process. Since the outer wall of the steel-wound pipe is a plastic-steel composite spiral rib structure, if the existing cutting method or cutting device is used to cut the pipe, such as China Patent 200510044884.1 or 200820233654.9, as shown in Fig. 1, the spiral rib 101 of the outer wall of the steel-wound pipe 100 and the dicing saw 200 form a small helix angle a of 4, and the smaller the diameter of the pipe, the smaller the a-rib, the spiral rib 101 is almost The saw end faces of the cutting saw 200 are parallel, and the sawtooth and the instantaneous cutting surface of the inner steel strip are cut. The saw end surface and the steel-wound tube 100 generate friction to deform the saw surface, and the saw teeth cannot cut the steel-wound tube 100 into a flat port, or even In the phenomenon that the saw blade is broken, the real-time and on-line cutting of the steel-wound pipe 100 in the production process cannot be realized.

Summary of the invention

In order to solve the problem that the steel-wound pipe cannot be cut into a flat port in the prior art, even the saw blade is broken, and the problem of real-time and on-line cutting of the steel-wound pipe in the production process cannot be realized, and the present invention provides a steel-wound pipe. Cutting method and cutting device thereof.

The invention provides a cutting method for a plastic steel wound pipe, comprising the following steps:

A. Filling the spiral rib at the position where the plastic-steel-wound pipe needs to be cut, so that the outer wall of the pipe where the steel-wound pipe needs to be cut is rounded;

B. Cutting is performed at a position where the steel-wound pipe needs to be cut. As a further improvement of the present invention, step A is to extrude the hot-melt plastic through a plastic extruder to fill the spiral rib at the position where the steel-wound pipe needs to be cut, so that the outer wall of the pipe where the steel-wound pipe needs to be cut is smooth. . As a further improvement of the present invention, step A is to extrude the hot melt plastic through a plastic extruder. The flat-plastic steel-wound pipe needs the spiral rib at the position where the steel-wound pipe is cut, so that the outer wall of the pipe where the steel-wound pipe needs to be cut is rounded, and the position where the steel-wound pipe needs to be cut is cooled. As a further improvement of the present invention, the step A is a plastic-steel winding tube which is wound and formed by a pipe forming device, and the hot-melt plastic is extruded through a plastic extruder to fill the spiral rib at a position where the steel-wound pipe needs to be cut, so that the steel-steel winding pipe The outer wall of the pipe at the position to be cut is rounded, and the position where the steel-wound pipe needs to be cut is cooled by the spray water-cooling device, and the step B is to cut at a position where the steel-wound pipe needs to be cut by the progressive cutting device. The moving speed of the progressive cutting device is the same as the axial moving speed of the steel coiled pipe. The invention also provides a cutting device for a plastic steel wound pipe, comprising a pipe forming device for winding a shaped steel-wound pipe, a plastic extruder for extruding a hot-melt plastic filled flat steel-wrapped pipe at a position where the spiral rib is required to be cut, a spray water cooling device that cools a position where the steel-wound pipe needs to be cut, and a progressive cutting device that cuts and maintains the same moving speed as the axial movement speed of the steel-wound pipe, wherein the plastic extruder and the spray water are cooled The device and the progressive cutting device are arranged in the order of the winding tube of the plastic-steel winding tube. As a further improvement of the present invention, the progressive cutting device comprises a base and a progressive controller, wherein the base is provided with a longitudinal feed mechanism parallel to the axial direction of the steel-wound tube, the longitudinal feed mechanism a transverse feeding mechanism perpendicular to the axial direction of the steel-wound pipe is disposed, the horizontal feeding mechanism is provided with a cutting mechanism, and the progressive controller is respectively connected to the longitudinal feeding mechanism and the horizontal feeding Institutional connection. As a further improvement of the present invention, the longitudinal feed mechanism comprises a longitudinal motor, a longitudinal screw connected to the longitudinal motor and parallel to the axial direction of the steel-wound tube, and a longitudinal screw disposed on the longitudinal screw a nut and a longitudinal table disposed on the longitudinal screw nut, the lateral feed mechanism comprising a transverse motor, a transverse screw connected to the transverse motor and perpendicular to an axial direction of the plastic wound pipe, disposed at the a transverse screw nut on the transverse screw and a transverse table disposed on the transverse screw nut, the cutting mechanism comprising a cutting motor and a cutting saw coupled to the cutting motor, wherein the longitudinal screw is disposed at The lateral screw is disposed on the longitudinal working table, the cutting saw is disposed on the lateral working table, and the progressive controller is respectively associated with the longitudinal motor and the transverse motor connection. As a further improvement of the present invention, the cutting motor and the cutting saw are belt drives, and the cutting saw is a circular saw blade. As a further improvement of the present invention, the longitudinal working table is provided with a support steel-wound tube The supporting device comprises at least two supporting frames, and the supporting frame is provided with a supporting roller. As a further improvement of the present invention, the longitudinal working table is provided with a guiding groove, and the supporting frame is disposed on the guiding groove by a clamping mechanism, the guiding groove is perpendicular to the longitudinal screw, and the two The support frame is disposed on two sides of the longitudinal screw, and the axis of the support roller is parallel to the longitudinal screw.

The beneficial effects of the invention are as follows: According to the above scheme, before the cutting, the spiral ribs of the outer tube wall of the plastic steel winding pipe are filled, and the plastic steel winding pipe can be cut into a flat port to avoid the phenomenon that the saw blade is broken, which is beneficial to realize Real-time, on-line cutting of plastic steel coiled tubing during production.

DRAWINGS

1 is a schematic view of a prior art plastic steel wound pipe when it is cut;

2 is a schematic overall view of a cutting device for a plastic steel wound pipe according to the present invention;

Figure 3 is a front elevational view of the progressive cutting device of the cutting device for a plastic steel wound pipe according to the present invention; Figure 4 is a plan view of the progressive cutting device of the cutting device for a plastic steel wound pipe according to the present invention; A right side view of the progressive cutting device of the cutting device of the steel-wound pipe; Fig. 6 is a schematic view showing the structure of the steel-wound pipe formed by cutting the cutting method of the steel-wound pipe according to the present invention.

detailed description

The invention will now be further described with reference to the drawings and specific embodiments.

1 to 6 are: steel-wound pipe 100; spiral rib 101; flattening pipe outer wall 102; cutting saw 200; pipe forming equipment 1; plastic extruder 2, spray water cooling device 3; Cutting device 4; longitudinal table 41; longitudinal motor 411; longitudinal screw 412; transverse table 42; transverse motor 421; transverse screw 422; base 43; drive wheel 44; cutting motor 441; cutting saw 45; Shelf 46; guide groove 461; support roller 47; progressive controller 48, waste bin

49.

As shown in FIG. 2 to FIG. 6, a method for cutting a plastic steel coiled pipe comprises the following steps:

A. Filling the plastic-wrapped tube 100 The spiral rib 101 at the position where the cutting is required is required to form the outer wall 102 of the filling tube, so that the outer wall of the tube where the steel-wound tube 100 needs to be cut is rounded;

B. Cutting is performed at a position where the steel-wound pipe 100 needs to be cut, that is, cutting is performed on the outer pipe 102 of the flat pipe. As shown in FIG. 2 to FIG. 6 , the step A is specifically to extrude the hot melt plastic through the plastic extruder 2 . The flat-plastic steel coiled pipe 100 needs to be cut at the position of the spiral rib 101 to form the outer wall 102 of the flattening pipe, so that the outer wall of the pipe at the position where the steel-wound pipe 100 needs to be cut is rounded. As shown in FIG. 2 to FIG. 6 , the step A is specifically a method of extruding the hot-melt plastic through the plastic extruder 2 to fill the spiral rib 101 at the position where the steel-wound pipe 100 needs to be cut, so that the steel-wound pipe 100 needs to be cut. The outer wall of the tube is rounded, and is cooled at a position where the steel-wound tube 100 needs to be cut. As shown in FIG. 2 to FIG. 6 , the step A is specifically a steel-wound pipe 100 which is wound and formed by the pipe forming apparatus 1 , and the hot-melt plastic is extruded through the plastic extruder 2 to fill the spiral at the position where the steel-wound pipe 100 needs to be cut. The rib 101 makes the outer wall of the pipe at the position where the steel-wound pipe 100 needs to be cut into a smooth shape, and is cooled by the spray water-cooling device 3 at a position where the steel-wound pipe 100 needs to be cut, and step B is performed by the progressive cutting device 4 The steel-wound pipe 100 is cut at a position where it is required to be cut, and the axial position at the position where the progressive cutting device 4 needs to be cut relative to the steel-wound pipe 100 is stationary, even if the moving speed of the progressive cutting device 4 and the steel-wound pipe 100 The axial discharge pipe moves at the same speed, the steel-wound pipe 100 moves toward the winding pipe of the pipe forming device, and the progressive cutting device 4 moves toward the winding pipe of the pipe forming device 1 at the same speed until the cutting is completed. The progressive cutting device 4 is reset, and the next progressive cutting is cycled, which is beneficial to realize the real-time operation of the steel-wound pipe 100 in the production process. Wire cutting. As shown in FIG. 2 to FIG. 6 , the present invention also provides a cutting device for a plastic steel wound pipe, comprising a pipe forming device for winding a formed steel-wound pipe 100, and an extruded hot-melt plastic filled steel-wound pipe 100 to be cut. The plastic extruder 2 of the spiral rib 101 at the position, the shower water cooling device 3 that cools the position where the steel-wound pipe 100 needs to be cut, and the axial direction at which the cutting and holding are required to be cut with the steel-wound pipe 100 The progressive cutting device 4 is stationary, that is, the moving speed of the progressive cutting device 4 is the same as the axial pipe exiting speed of the steel coiled pipe 100, wherein the plastic extruder 2 and the spray water cooling device 3 And the progressive cutting device 4 is arranged in the order of the winding pipe of the plastic-steel winding pipe 100 in order to realize the first winding forming of the steel-wound pipe

100, secondly extruding hot-melt plastic filled flat steel-wrapped tube 100 spiral rib at the position to be cut

101. The third pair of steel-wound pipe 100 is cooled at a position where it needs to be cut. Finally, the steel-wound pipe 100 is progressively cut, and the steel-wound pipe 100 can be cut into a flat port to avoid the phenomenon that the saw blade is broken. As shown in FIG. 2 to FIG. 6, the progressive cutting device 4 includes a base 43 and a progressive controller 48. The base 43 is provided with a longitudinal feed mechanism parallel to the axial direction of the steel-wound tube 100. The longitudinal feeding mechanism is provided with a transverse feeding mechanism perpendicular to the axial direction of the steel-wound pipe 100, a cutting mechanism is disposed on the lateral feeding mechanism, the progressive controller 48 is respectively connected to the longitudinal feeding mechanism and the lateral feeding mechanism, and the progressive control electrical system of the progressive controller 48 can The longitudinal feed mechanism is controlled by the progressive controller 48 to achieve progressive synchronous movement of the steel-wound tube 100, and the feed of the lateral feed mechanism can be controlled by the progressive controller 48. The movement, thereby realizing the cutting of the steel-wrapped tube 100, can cut the steel-wound tube 100 into a flat port to avoid the phenomenon that the saw blade is broken. As shown in FIGS. 2 to 6, the longitudinal feed mechanism includes a longitudinal motor 411, a longitudinal screw 412 coupled to the longitudinal motor 411 and parallel to the axial direction of the steel-wound tube 100, and disposed at the longitudinal wire. a longitudinal lead nut on the rod 412 and a longitudinal table 41 disposed on the longitudinal lead nut, the infeed mechanism including a transverse motor 421, a shaft coupled to the transverse motor 421 and a spool of the steel-wound tube 100 a transverse transverse screw 422, a transverse spindle nut disposed on the transverse screw 422, and a transverse table 42 disposed on the transverse spindle nut, the cutting mechanism including a cutting motor 441 and cutting a cutting saw 45 to which the motor 441 is connected, wherein the longitudinal screw 412 is disposed on the base 43, the transverse screw 422 is disposed on the longitudinal table 41, and the cutting saw 45 is disposed on the On the lateral table 42, the progressive controller 48 is connected to the longitudinal motor 411 and the lateral motor 421, respectively. As shown in FIG. 2 to FIG. 6 , the cutting motor 441 and the cutting saw 45 are belt driven, that is, the output shaft of the cutting motor 441 is provided with a driving wheel 44 , and the driving wheel 44 and the cutting saw are 45 is a belt drive, the cutting saw 45 is a circular saw blade, the cutting saw 45 is provided with a protective cover, and a funnel-shaped waste box 49 is disposed below the cutting saw 45 for recovering cutting waste. As shown in FIG. 2 to FIG. 6 , the longitudinal working table 41 is provided with a supporting device for supporting the steel-wound tube 100, the supporting device includes at least two supporting frames 46, and the supporting frame 46 is provided with a supporting roller 47. The support device is movable with the movement of the longitudinal table 41. As shown in FIG. 2 to FIG. 6 , the longitudinal working table 41 is provided with a guiding groove 461 , and the guiding groove 461 is a linear guiding groove, and the supporting frame 46 is disposed on the guiding groove 461 by a clamping mechanism. The guide groove 461 is perpendicular to the longitudinal screw 412, that is, the guide groove 461 is perpendicular to the axis of the steel-wound tube 100, and the two support frames 46 are disposed on both sides of the longitudinal screw 412, that is, The two supporting frames 46 are disposed on two sides of the axis of the steel-wound tube 100, the supporting roller 47 is in the shape of a roller, and the axis of the supporting roller 47 is parallel to the longitudinal screw 412, that is, the supporting roller 47 The axis is parallel to the axis of the steel-wound tube 100, and the position of the two support frames 46 can be adjusted by the clamping mechanism to accommodate the plastic-wound tube 100 of different diameters.

The working principle of a cutting device for a plastic steel wound pipe provided by the invention is as follows: First, the plastic forming steel pipe 100 is wound by the pipe forming apparatus 1;

Next, the hot-melt plastic is extruded through the plastic extruder 2 to fill the spiral rib 101 at the position where the plastic-wrapped steel tube 100 needs to be cut to form a smooth flattened outer wall 102, specifically, the adjacent spiral rib 101 Forming a groove, filling the groove by extruding hot-melt plastic through the plastic extruder 2, thereby filling the spiral rib 101 at the position where the steel-wound pipe 100 needs to be cut, due to the process of winding the steel-wound pipe 100 out of the pipe There is both axial outflow and rotary motion. Therefore, it is only necessary to arrange the plastic extruder 2 above the plastic coiled pipe 100, and the extrusion direction of the plastic extruder 2 is perpendicular to the axis of the steel coiled pipe 100, a plurality of extrusion heads, aligned with the grooves formed by the adjacent spiral ribs 101, and extruded a hot-melt plastic strip adapted to the shape of the groove to fill the spiral rib at the position where the steel-wound pipe 100 needs to be cut. Rib 101;

Thirdly, the cooling steel coiled pipe 100 is cooled by the spray water cooling device 3 at the position where the steel-wound pipe 100 needs to be cut. Since the steel-wound pipe 100 has both the axial pipe movement and the rotary motion in the process of winding the pipe, it is only necessary to The spray water cooling device 3 is disposed above the plastic steel coiled pipe 100, and the spray water cooling device 3 spray direction is perpendicular to the axis of the plastic steel coiled pipe 100, and is continuously sprayed through a plurality of shower heads to cool the plastic extruder 2 extruded hot-melt plastic strip, thereby achieving cooling at a position where the steel-wound pipe 100 needs to be cut;

Finally, the steel-wound tube 100 is progressively cut by the progressive cutting device 4, as follows:

The longitudinal motor 411 is controlled by the progressive controller 48, the longitudinal screw 412 is driven to rotate by the longitudinal motor 411, and the longitudinal table 41 is longitudinally moved by the longitudinal screw nut, that is, parallel to the axis of the steel-wound tube 100. The forward and backward movement, on the basis of the longitudinal feed, the transverse motor 421 can be controlled by the progressive controller 48, the transverse screw 422 is driven to rotate by the transverse motor 421, and the transverse table 42 is driven by the transverse screw nut. The lateral movement, that is, the left and right movement perpendicular to the axis of the steel-wound tube 100, on the basis of the lateral feed, the cutting saw 45 can be driven by the drive motor 44 through the drive wheel 44 to adjust the rotation, longitudinally The mechanism realizes that the cutting saw 45 is the same as the extrusion movement of the steel-wound tube 100, and the lateral feeding mechanism realizes the cutting movement of the cutting saw 45, which is beneficial to real-time and on-line cutting of the steel-wound tube 100 in the production molding process.

The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It is to be understood by those skilled in the art that the present invention can be delineated or replaced without departing from the spirit and scope of the invention.

Claims

Claim

A cutting method for a plastic steel wound pipe, comprising the steps of:

A. Fill the flat steel-wrapped pipe (100) The spiral rib (101) at the position where the steel-wound pipe (100) needs to be cut, so that the outer wall of the pipe at the position where the steel-wound pipe (100) needs to be cut is rounded;

B. Cut at the position where the steel-wound pipe (100) needs to be cut.

2. The method for cutting a plastic-steel-wound tube according to claim 1, wherein: step A is to extrude the hot-melt plastic by a plastic extruder (2) to fill the position where the plastic-wrapped tube (100) needs to be cut. The spiral rib (101) is such that the outer wall of the tube at the position where the steel-wound pipe (100) needs to be cut is rounded.

3. The method for cutting a plastic-steel-wound tube according to claim 2, wherein: step A is to extrude the hot-melt plastic through a plastic extruder (2) to fill the position where the plastic-wrapped tube (100) needs to be cut. The spiral rib (101) is such that the outer wall of the pipe where the steel-wound pipe (100) needs to be cut is rounded, and the steel-wound pipe (100) is cooled at a position where it needs to be cut.

4. The method for cutting a plastic-steel coiled pipe according to claim 3, wherein: step A is a plastic-steel-wound tube (100) wound by a pipe forming device (1), and passed through a plastic extruder.

(2) Extrusion hot-melt plastic filled flat steel-wrapped pipe (100) The spiral rib (101) at the position to be cut, so that the outer wall of the pipe where the steel-wound pipe (100) needs to be cut is smooth, by spraying The water-cooling device (3) cools the position where the steel-wound pipe (100) needs to be cut, and the step B is to cut at a position where the steel-wound pipe (100) needs to be cut by the progressive cutting device (4), the progressive Cutting speed of the cutting device (4) and the steel coiled pipe

The axial movement speed of (100) is the same.

5. A cutting device for a plastic steel wound pipe, characterized in that: comprising a wound-formed plastic steel coiled pipe

(100) Pipe forming equipment (1), extruded hot-melt plastic filled flat steel coiled pipe (100) Plastic extruder (2) for spiral ribs (101) at the position where cutting is required, and steel-wound pipe ( 100) a spray water cooling device (3) for cooling at a position to be cut, and a progressive cutting device (4) for cutting and maintaining a moving speed which is the same as an axial moving speed of the steel-wound pipe (100), wherein the plastic The extruder (2), the spray water cooling device (3), and the progressive cutting device (4) are sequentially arranged in the direction of the winding pipe of the steel-wound pipe (100).

6. The cutting device for a steel-wound tube according to claim 5, characterized in that: the progressive cutting device (4) comprises a base (43) and a progressive controller (48), the base (43) a longitudinal feeding mechanism parallel to the axial direction of the steel-wound tube (100) is disposed, and the longitudinal feeding mechanism is provided with a lateral feeding mechanism perpendicular to the axial direction of the steel-wound tube (100), The lateral feed mechanism is provided with a cutting mechanism, and the progressive controller (48) is respectively connected to the longitudinal feed mechanism and the lateral feed mechanism.

7. The cutting device for a steel-wound tube according to claim 6, wherein: the longitudinal feed mechanism comprises a longitudinal motor (411), a longitudinal motor (411) connected thereto, and a steel-wound tube (100). a longitudinally parallel longitudinal lead screw (412), a longitudinal lead screw nut disposed on the longitudinal lead screw (412), and a longitudinal table (41) disposed on the longitudinal lead nut, the lateral advancement The mechanism includes a transverse motor (421), a transverse screw (422) coupled to the transverse motor (421) and perpendicular to the axial direction of the steel-wound tube (100), disposed on the transverse screw (422) Transverse screw nut and transverse table disposed on the transverse screw nut

(42), the cutting mechanism includes a cutting motor (441) and a cutting saw (45) connected to the cutting motor (441), wherein the longitudinal screw (412) is disposed on the base (43), The transverse screw (422) is disposed on the longitudinal table (41), the cutting saw (45) is disposed on the lateral table (42), and the progressive controller (48) is respectively The longitudinal motor (411) and the lateral motor (421) are connected.

8. The cutting device for a steel-wound tube according to claim 7, wherein: the cutting motor (441) and the cutting saw (45) are belt drives, and the cutting saw (45) is a circular saw blade. .

9. The cutting device for a steel-wound tube according to claim 6, wherein: said longitudinal table (41) is provided with supporting means for supporting a steel-wound tube (100), said supporting device comprising at least two supports A support frame (46) is provided with a support roller (47).

The cutting device for a steel-wound tube according to claim 9, wherein: the longitudinal table (41) is provided with a guide groove (461), and the support frame (46) is disposed at a position by a clamping mechanism. On the guiding groove (461), the guiding groove (461) is perpendicular to the longitudinal screw (412), and the two supporting frames (46) are respectively disposed on two sides of the longitudinal screw (412). The axis of the support roller (47) is parallel to the longitudinal screw (412).