An integrated machine for turning and cutting internal and external threads of HDPE hollow wall production line

Abstract

The present invention belongs to the technical field of polyethylene winding pipes, and specifically relates to an integrated machine for turning and cutting internal and external threads of a HDPE hollow wall production line, comprising a workbench with a frame provided above and a winding pipe production device provided on one side; a supporting mechanism spanning the workbench for receiving the winding pipes derived from the winding pipe production device; a cutting mechanism located on one side of the supporting mechanism and equipped with a saw blade for cutting the winding pipes; an internal and external thread cutting mechanism located on the other side of the supporting mechanism and equipped with an internal thread cutting tool and an external thread cutting tool for cutting threads at the ends of the winding pipes. The present invention can cut and cut internal and external threads of winding pipes of different diameters, and the cutting lengths of the winding pipes are the same, the cut end faces are smooth, and the winding pipes can be used without secondary trimming, nor is there a need to transport the winding pipes and the molds together to the cutting equipment for cutting the lengths of the winding pipes and cutting the internal and external threads, thereby saving labor and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of polyethylene winding pipes, in particular to an integrated machine for turning and cutting internal and external threads of a HDPE hollow wall production line. Background Art

[0002] The production process for polyethylene spiral wound tubing involves loading the raw materials into a mixing device according to a specific ratio and stirring them. Once mixed, they are then fed to an intermediate silo for storage via a vacuum feeder. From there, the materials are fed to the spiral wound tubing production unit. After heating, plasticization, and homogenization in the extruder, they are extruded through a runner and die into a flat strip and a curved strip for wrapping the PP skeleton tube. The polypropylene material from the intermediate extruder is evenly wound onto the surface of a rotating drum, which rotates to form the spiral wound tubing. The tubing, along with the mold, is hoisted onto a cutting machine, cooled, and the socket and spigot ends are cut to the specified dimensions. The tubing is then hoisted onto a demolding station for demolding. After demolding, the internal and external surfaces of the tubing are trimmed, and a metal fuse is embedded in the socket end. The tubing is then ready for inspection and packaging.

[0003] In the prior art, the winding tube and the mold need to be transported together to the cutting equipment for cutting the winding tube to the length. CN 217476640 U discloses an adjustable cutting device for polyethylene winding tube, including a base and a mounting column. The mounting column is provided with a sliding groove, the sliding groove opening is set to the right, a sliding block is provided in the sliding groove, a threaded through hole is provided on the sliding block, a threaded rod is connected to the threaded through hole, the top of the threaded rod is passed through the mounting column, and a handle is fixedly connected to the top of the threaded rod. The utility model can cut the length of the winding tube, but in order to facilitate the connection of the winding tube, the internal and external threads need to be cut at both ends of the winding tube, which cannot be achieved by this cutting device. The present invention provides an HDPE hollow wall production line online internal and external thread turning and cutting integrated machine, which improves work efficiency and reduces the production cost of transporting winding tubes. Summary of the Invention

[0004] In order to overcome the above-mentioned defects in the prior art, the present invention provides an HDPE hollow wall production line on-line internal and external thread turning and cutting integrated machine.

[0005] An integrated machine for turning and cutting internal and external threads of HDPE hollow wall production line.

[0006] A workbench with a machine frame on top and a winding tube production device on one side;

[0007] A supporting mechanism, which spans across the workbench and is used to receive the coiled tube outputted from the coiled tube production device;

[0008] a cutting mechanism, which is located on one side of the supporting mechanism and is equipped with a saw blade for cutting the wound tube;

[0009] The internal and external thread cutting mechanism is located on the other side of the support mechanism and is equipped with an internal thread cutter and an external thread cutter for cutting the threads at the end of the winding pipe. The internal thread cutter is installed at the end away from the production device and can cut the threads on the inner wall of the winding pipe. The external thread cutter is installed at the end close to the production device and can cut the threads on the outer wall of the winding pipe.

[0010] Furthermore, the workbench is a rectangular frame structure, and the two ends of the workbench are provided with a first guide rail extending along its width direction. The two ends of the frame are slidingly connected to the workbench through the first guide rails. The middle part of the workbench is provided with a screw extending along its width direction. The frame is threadedly connected to the screw, and one end of the screw is provided with a first drive motor, which is installed on the side wall of the workbench.

[0011] Furthermore, the two ends of the frame are provided with a second guide rail extending along the length direction thereof, and the two ends of the frame are provided with a first support platform and a second support platform connected to a horizontal drive component. The horizontal drive component drives the first support platform and the second support platform to move along the second guide rail, and a waste box is provided on the side walls of the first support platform and the second support platform below the saw blade and the external thread cutting tool.

[0012] Furthermore, the saw blade is connected to one end of the transmission roller, and the other end of the transmission roller is connected to the second drive motor through a transmission mechanism. The second drive motor is slidably connected to the third guide rail on the top of the first support platform through a motor mounting bracket. A horizontal drive assembly is provided on the first support platform, and the horizontal drive assembly drives the second drive motor to move along the third guide rail.

[0013] Furthermore, a cover is provided on the top of the first support platform, and the cover covers the periphery of the cutting assembly. The side of the cover close to the winding tube is an open structure, and the periphery of the saw blade is covered with a protective cover, and one end of the transmission roller passes through the side wall of the protective cover and is connected to the saw blade.

[0014] Furthermore, the internal thread cutter is connected to the third drive motor through a transmission mechanism, and the third drive motor is installed on the fixed block through a motor mounting bracket. A cutting arm extends from the fixed block along the length direction of the winding tube, and the cutting arm is perpendicular to the fixed block. A mounting groove is provided on the side of the cutting arm close to the inner wall of the winding tube, and the internal thread cutter is rotatably installed in the mounting groove.

[0015] Furthermore, the external thread cutter is connected to the fourth drive motor through a transmission mechanism, and the fourth drive motor is installed on a fixed frame through a motor mounting bracket. The fixed frame is rotatably connected to the external thread cutter at one end close to the outer wall of the winding tube.

[0016] Furthermore, the lower end surfaces of the fixed block and the fixed frame are connected to the guide plate, and the guide plate is slidably connected to the slide rail on the upper end surface of the second support platform. A horizontal drive component is provided at the end of the second support platform away from the winding tube, and the horizontal drive component drives the fixed block and the fixed frame to move along the slide rail.

[0017] Furthermore, the supporting mechanism includes a supporting roller, both ends of which are connected to an adjustable telescopic rod through a fixing piece, and the adjustable telescopic rod is installed on a connecting block on the side of the workbench at a certain inclination angle.

[0018] Furthermore, it also includes a positioning mechanism arranged on the second support platform and the top of the cover body, the positioning mechanism includes a positioning roller, the positioning roller is connected to the first limiting rod through a positioning frame, and second limiting rods are provided on both sides of the first limiting rod.

[0019] Due to the adoption of the above technical scheme, the beneficial technical effect of the present invention is: the present invention can cut and cut internal and external threads of winding tubes of different diameters, and the cutting length of the winding tubes is the same, which reduces the workload of the staff who need to measure the length of the winding tube before each cutting. The cut end face is flat and can be used without secondary trimming. There is no need to transport the winding tube and the mold together to the cutting equipment for cutting the length of the winding tube and cutting the internal and external threads, which saves labor and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of an HDPE hollow wall production line online internal and external thread turning and cutting integrated machine of the present invention. Figure 1 ;

[0021] Figure 2 This invention is a schematic diagram of the structure of an HDPE hollow wall production line online internal and external thread turning and cutting integrated machine Figure 2 ;

[0022] Figure 3 Schematic diagram of the positioning mechanism of the present invention;

[0023] Figure 4 Schematic diagram of the installation structure of the internal thread cutting tool in the present invention;

[0024] Figure 5 Schematic diagram of the structure of the cutting mechanism of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the support mechanism in the present invention.

[0026] In the figure, 1, workbench, 2, frame, 3, saw blade, 4, internal thread cutter, 5, external thread cutter, 6, first guide rail, 7, lead screw, 8, first drive motor, 9, first support platform, 10, second support platform, 11, second guide rail, 12, waste box, 13, transmission roller, 14, second drive motor, 15, third guide rail, 16, cover, 17, protective cover, 18, third drive motor, 19, fixed block, 20, cutting arm, 21, mounting groove, 22, fourth drive motor, 23, fixed frame, 24, guide plate, 25, slide rail, 26, supporting roller, 27, fixing part, 28, adjustable telescopic rod, 29, connecting block, 30, positioning roller, 31, positioning frame, 32, first limit rod, 33, second limit rod, 34, transmission mechanism. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all fall within the scope of protection of the present invention.

[0028] according to Figure 1-6 As shown, an HDPE hollow wall production line online internal and external thread turning and cutting integrated machine includes a workbench 1, a supporting mechanism, a cutting mechanism, and an internal and external thread cutting mechanism. A winding pipe production device is provided on one side of the workbench 1. The winding pipe production device is a prior art and the specific structure of the winding pipe production device is not described here. The rotating drum of the winding pipe production device continuously guides the winding pipe forward by rotating. The winding pipe at the front end is supported by the supporting mechanism, and the supporting mechanism spans the workbench 1. The internal and external thread cutting mechanism includes an internal thread cutting knife 4 and an external thread cutting knife 5. The internal thread cutting knife 4 is installed at one end away from the production device. The external thread cutter 5 is installed at one end close to the production device. When the winding tube reaches the specified length, the internal thread cutter 4 is used to cut the thread on the inner wall of the winding tube. When the front end of the winding tube abuts against the fixed block 19, the extruder of the winding tube production device stops working, and the rotating drum still drives the winding tube to rotate. During the rotation of the winding tube, the saw blade 3 of the cutting mechanism cuts off the winding tube. At the same time, the external thread cutter 5 cuts the thread on the outer wall of the winding tube. The winding tubes cut by the present invention are of equal length, which reduces the workload of the staff who need to measure the length of the winding tube before each cutting. The cut end face is flat and can be used without secondary trimming.

[0029] This embodiment provides an integrated machine for turning and cutting internal and external threads of a HDPE hollow wall production line. The machine frame 2 is easy to adjust. The machine frame 2 can be moved along the width direction of the workbench 1 to adjust the position, so that the cutting mechanism, the internal and external thread cutting mechanism and the winding pipe production device can be better coordinated. The first drive motor 8 is started, and the machine frame 2 is threadedly connected to the lead screw 7 installed on the workbench 1, thereby driving the machine frame 2 to move. The specific technical solution is as follows:

[0030] The workbench 1 is a rectangular frame structure, and both ends of the workbench 1 are provided with first guide rails 6 extending along its width direction. Both ends of the frame 2 are slidingly connected to the workbench 1 through the first guide rails 6. The middle part of the workbench 1 is provided with a screw 7 extending along its width direction. The frame 2 is threadedly connected to the screw 7. One end of the screw 7 is provided with a first drive motor 8, and the first drive motor 8 is installed on the side wall of the workbench 1.

[0031] This embodiment provides an HDPE hollow wall production line online internal and external thread turning and cutting integrated machine, which can adapt to the cutting work and internal and external thread cutting work of winding pipes of different diameters. The first support platform 9 and the second support platform 10 are driven to move along the second guide rail 11 by a horizontal drive component. The horizontal drive component can be a nut and screw mechanism connected to the motor, or a gear rack mechanism connected, or other mechanisms that drive the first support platform 9 and the second support platform 10 to move horizontally along the second guide rail 11. The horizontal drive component is a prior art, as shown in the accompanying drawings. The specific technical solution is as follows:

[0032] Both ends of the frame 2 are provided with second guide rails 11 extending along the length direction thereof, and both ends of the frame 2 are provided with first support platforms 9 and second support platforms 10 connected to the horizontal drive assembly, and the horizontal drive assembly drives the first support platform 9 and the second support platform 10 to move along the second guide rail 11, and a waste box 12 is provided on the side walls of the first support platform 9 and the second support platform 10 below the saw blade 3 and the external thread cutting tool 5. The waste box 12 can be used to collect waste generated during the external thread cutting and winding pipe length cutting.

[0033] The present embodiment provides an HDPE hollow wall production line online internal and external thread turning and cutting integrated machine, which is convenient for cutting winding pipes of the same length. When the cutting work is not performed, the saw blade 3 is away from the winding pipe. When the cutting work is required, the horizontal drive component (the same as the above-mentioned horizontal drive component) drives the second drive motor 14 to move toward the winding pipe. The second drive motor 14 is connected to the transmission roller 13 through the transmission mechanism 34. The transmission mechanism 34 can be a chain sprocket mechanism, or a belt pulley mechanism, or other mechanisms that can transmit and connect the second drive motor 14 and the transmission roller 13. The transmission mechanism 34 is a prior art. The accompanying drawings show the specific structure. The top of the cutting mechanism is provided with a cover 16, and the outer peripheral cover of the saw blade 3 is provided with a protective cover 17 to prevent waste generated by cutting from splashing. The specific technical solution is as follows:

[0034] The saw blade 3 is connected to one end of the transmission roller 13, and the other end of the transmission roller 13 is connected to the second drive motor 14 through a transmission mechanism 34. The second drive motor 14 is slidably connected to the third guide rail 15 on the top of the first support platform 9 through a motor mounting bracket. A horizontal drive component is provided on the first support platform 9, and the horizontal drive component drives the second drive motor 14 to move along the third guide rail 15.

[0035] A cover 16 is provided on the top of the first support platform 9, and the cover 16 covers the periphery of the cutting assembly. The side of the cover 16 close to the winding tube is an open structure, and the periphery of the saw blade 3 is covered with a protective cover 17. One end of the transmission roller 13 passes through the side wall of the protective cover 17 and is connected to the saw blade 3.

[0036] This embodiment provides an integrated machine for turning and cutting internal and external threads of a HDPE hollow wall production line. The positions of the internal thread cutter 4 and the external thread cutter 5 are adjusted by a horizontal drive assembly (the same as the above-mentioned horizontal drive assembly) to adapt to winding pipes of different diameters. The internal thread cutter 4 cuts threads during the rotation of the winding pipe. The third drive motor 18 is connected to the internal thread cutter 4 through a transmission mechanism 34 (the same as the above-mentioned transmission mechanism 34), thereby achieving cutting of internal threads. The fourth drive motor 22 is connected to the external thread cutter 5 through a transmission mechanism 34 (the same as the above-mentioned transmission mechanism 34), thereby achieving cutting of external threads. The specific technical solution is as follows:

[0037] The internal thread cutting tool 4 is connected to the third drive motor 18 through a transmission mechanism 34. The third drive motor 18 is installed on a fixed block 19 through a motor mounting bracket. A cutting arm 20 extends from the fixed block 19 along the length direction of the winding tube. The cutting arm 20 is perpendicular to the fixed block 19. A mounting groove 21 is provided on the side of the cutting arm 20 close to the inner side wall of the winding tube, and the internal thread cutting tool 4 is rotatably installed in the mounting groove 21.

[0038] The external thread cutter 5 is connected to the fourth drive motor 22 through a transmission mechanism 34. The fourth drive motor 22 is installed on the fixing bracket 23 through a motor mounting bracket. The fixing bracket 23 is rotatably connected to the external thread cutter 5 at one end close to the outer wall of the winding tube.

[0039] The lower end surfaces of the fixed block 19 and the fixed frame 23 are both connected to the guide plate 24, and the guide plate 24 is slidably connected to the slide rail 25 on the upper end surface of the second support platform 10. The end of the second support platform 10 away from the winding tube is provided with a horizontal drive component, and the horizontal drive component drives the fixed block 19 and the fixed frame 23 to move along the slide rail 25.

[0040] This embodiment provides an integrated machine for turning and cutting internal and external threads of a HDPE hollow wall production line. The preferred support mechanism comprises two groups, including support rollers 26 extending along the width direction of the workbench 1. The support rollers 26 support the winding tube. Both ends of the support rollers 26 are connected to an adjustable telescopic rod 28 via a fixing member 27. The operator can adjust the length of the adjustable telescopic rod 28 according to the diameter of the winding tube to adapt it to the operation of the cutting mechanism and the internal and external thread cutting mechanism. The specific technical solution is as follows:

[0041] The supporting mechanism includes a supporting roller 26 , both ends of which are connected to an adjustable telescopic rod 28 via a fixing member 27 . The adjustable telescopic rod 28 is mounted on a connecting block 29 on the side of the workbench 1 at a certain inclination angle.

[0042] This embodiment provides an integrated machine for cutting and turning internal and external threads of a HDPE hollow wall production line. A positioning mechanism is provided to prevent the winding pipe from shaking during the process of cutting internal and external threads and cutting to length, thereby affecting the quality of the winding pipe. The staff can adjust the length of the first limiting rod 32 according to the diameter of the winding pipe. The second limiting rod 33 cooperates with the first limiting rod 32. The specific technical solution is as follows:

[0043] It also includes a positioning mechanism arranged on the top of the second support platform 10 and the cover body 16, and the positioning mechanism includes a positioning roller 30, which is connected to the first limiting rod 32 through a positioning frame 31, and a second limiting rod 33 is provided on both sides of the first limiting rod 32.

[0044] After adopting the above technical solution, winding tubes of different diameters can be cut and internal and external threads can be cut, and the cutting length of the winding tubes is the same, which reduces the workload of the staff to measure the length of the winding tube before each cutting. The cut end face is flat and can be used without secondary trimming. There is no need to transport the winding tube and the mold together to the cutting equipment before cutting the winding tube length and cutting the internal and external threads, which saves labor, improves work efficiency, and reduces the company's production costs.

[0045] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. An online internal and external thread turning and cutting machine for HDPE hollow wall production line, characterized in that: A workbench (1) is provided with a frame (2) on the top and a winding tube production device on one side; A supporting mechanism, which spans the workbench (1) and is used to receive the coiled tubes output from the coiled tube production device; a cutting mechanism, which is located on one side of the supporting mechanism and is equipped with a saw blade (3) for cutting the winding tube; An internal and external thread cutting mechanism is located on the other side of the support mechanism and is equipped with an internal thread cutting tool (4) and an external thread cutting tool (5) for cutting threads at the end of the winding pipe. The internal thread cutting tool (4) is installed at an end away from the production device and can cut threads on the inner wall of the winding pipe. The external thread cutting tool (5) is installed at an end close to the production device and can cut threads on the outer wall of the winding pipe. The workbench (1) is a rectangular frame structure, and first guide rails (6) extending along the width direction of the workbench (1) are provided at both ends of the workbench (1), and both ends of the frame (2) are slidably connected to the workbench (1) through the first guide rails (6). A lead screw (7) extending along the width direction of the workbench (1) is provided in the middle of the workbench (1), and the frame (2) is threadedly connected to the lead screw (7). A first drive motor (8) is provided at one end of the lead screw (7), and the first drive motor (8) is installed on the side wall of the workbench (1); The two ends of the frame (2) are provided with second guide rails (11) extending along the length direction thereof, the two ends of the frame (2) are provided with a first support platform (9) and a second support platform (10) connected to a horizontal drive assembly, the horizontal drive assembly drives the first support platform (9) and the second support platform (10) to move along the second guide rails (11), and a waste box (12) is provided on the side walls of the first support platform (9) and the second support platform (10) below the saw blade (3) and the external thread cutting tool (5); The internal thread cutting tool (4) is connected to the third drive motor (18) through a transmission mechanism (34). The third drive motor (18) is mounted on a fixed block (19) through a motor mounting bracket. A cutting arm (20) is extended from the fixed block (19) along the length direction of the winding tube. The cutting arm (20) is perpendicular to the fixed block (19). A mounting groove (21) is provided on a side of the cutting arm (20) close to the inner side wall of the winding tube. The internal thread cutting tool (4) is rotatably mounted in the mounting groove (21). The external thread cutting tool (5) is connected to the fourth drive motor (22) through a transmission mechanism (34); the fourth drive motor (22) is mounted on a fixing frame (23) through a motor mounting bracket; and one end of the fixing frame (23) close to the outer wall of the winding tube is rotatably connected to the external thread cutting tool (5); The supporting mechanism comprises a supporting roller (26), both ends of which are connected to an adjustable telescopic rod (28) through a fixing member (27), and the adjustable telescopic rod (28) is installed on a connecting block (29) on the side of the workbench (1) at a certain inclination angle.

2. The HDPE hollow wall production line online internal and external thread turning and cutting integrated machine according to claim 1, characterized in that: The saw blade (3) is connected to one end of a transmission roller (13), and the other end of the transmission roller (13) is connected to a second drive motor (14) through a transmission mechanism (34). The second drive motor (14) is slidably connected to a third guide rail (15) on the top of the first support platform (9) through a motor mounting frame. A horizontal drive assembly is provided on the first support platform (9), and the horizontal drive assembly drives the second drive motor (14) to move along the third guide rail (15).

3. The HDPE hollow wall production line online internal and external thread turning and cutting integrated machine according to claim 2, characterized in that: A cover (16) is provided on the top of the first support platform (9), and the cover (16) covers the periphery of the cutting assembly. The side of the cover (16) close to the winding tube is an open structure. The periphery of the saw blade (3) is covered with a protective cover (17), and one end of the transmission roller (13) passes through the side wall of the protective cover (17) and is connected to the saw blade (3).

4. The HDPE hollow wall production line online internal and external thread turning and cutting integrated machine according to claim 1, characterized in that: The lower end surfaces of the fixed block (19) and the fixed frame (23) are both connected to the guide plate (24), and the guide plate (24) is slidably connected to the slide rail (25) on the upper end surface of the second support platform (10). A horizontal driving component is provided at the end of the second support platform (10) away from the winding tube, and the horizontal driving component drives the fixed block (19) and the fixed frame (23) to move along the slide rail (25).

5. The HDPE hollow wall production line online internal and external thread turning and cutting integrated machine according to claim 1, characterized in that: The invention also includes a positioning mechanism arranged on the top of the second support platform (10) and the cover body (16), wherein the positioning mechanism includes a positioning roller (30), the positioning roller (30) is connected to the first limiting rod (32) through a positioning frame (31), and second limiting rods (33) are provided on both sides of the first limiting rod (32).

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