Multi-layer co-extrusion composite pipe production device

Abstract

The utility model relates to the field of composite pipe production, and particularly discloses a multi-layer co-extrusion composite pipe production device which comprises a machine body and two sets of cutting wheels arranged below the machine body and used for cutting two sets of pipes, the two sets of cutting wheels are symmetrically arranged, and a supporting frame is fixedly connected to the machine body; a first electric telescopic rod is fixedly connected to the supporting frame, a pressing plate is fixedly connected to the telescopic end of the first electric telescopic rod, a cutting groove matched with the cutting wheel is formed in the pressing plate, sliding grooves are formed in the two sides, parallel to the supporting frame, of the machine body, and two sets of locking plates are arranged on the sliding grooves in a sliding mode; the supporting frame comprises two sets of stand columns which are mutually stacked, and the machine body is provided with a driving mechanism used for driving the two sets of locking plates to be close to the two sets of stand columns correspondingly to clamp and fix the two sets of pipes. The pipe cutting device has the effects of preventing the pipes from shaking during cutting and improving the production efficiency of the pipes.

Description

Technical Field

[0001] This application relates to the field of composite pipe production equipment, and in particular to a multi-layer co-extrusion composite pipe production apparatus. Background Technology

[0002] Currently, the main processing methods for multi-layer plastic composite pipes include multi-layer co-extrusion casting, multi-layer co-extrusion blow molding, and self-locking composite processes. Co-extrusion technology is currently a relatively advanced processing method for plastic composite reinforced pipes. It can produce various composite pipes with special properties using raw materials with different characteristics and can reduce production costs. With the continuous expansion of the application fields of plastic pipes, co-extrusion technology plays an increasingly important role in the functionalization of composite pipes, especially in composites such as PE / glass fiber reinforced / PE, PE / modified PP, PE / PE, PP / aluminum pipe / PP, and PE / steel strip / PE.

[0003] The multi-layer co-extrusion composite pipe production process is a technology that uses the synergistic action of multiple extruders to extrude and fuse different special materials in layers in a composite die. In the production process of multi-layer co-extrusion composite pipe, plastic granules are first fed into the extruder. The plastic granules are heated and melted and then combined together by a multi-channel composite die to form a multi-layer composite pipe. After the composite pipe cools, it is cut into lengths that meet the production requirements by a cutting mechanism.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: When cutting multi-layer composite pipes, since each layer of the multi-layer composite pipe is made of different materials, the composite pipes are usually fixed manually during cutting. The composite pipes are prone to shaking during cutting, which can lead to problems such as burrs, delamination, and bevels at the pipe cut, affecting the production qualification rate of composite pipes. In addition, conventional equipment only has one set of cutting mechanisms to cut the pipes, resulting in low production efficiency of the pipes. Utility Model Content

[0005] To address the issues of easy shaking and low production efficiency during pipe cutting, this application provides a multi-layer co-extruded composite pipe production apparatus.

[0006] The multi-layer co-extruded composite pipe production apparatus provided in this application adopts the following technical solution:

[0007] A multi-layer co-extruded composite pipe production apparatus includes a machine body and two sets of cutting wheels arranged below the machine body for cutting two sets of pipes, with the two sets of cutting wheels symmetrically arranged. A support frame is fixedly connected to the machine body, and a first electric telescopic rod is fixedly connected to the support frame. A pressure plate is fixedly connected to the telescopic end of the first electric telescopic rod. The pressure plate has cutting grooves adapted to the cutting wheels. Sliding grooves are provided on both sides of the machine body parallel to the support frame. Two sets of locking plates are slidably arranged on the sliding grooves. The support frame includes two sets of columns stacked on top of each other. A driving mechanism is provided on the machine body for driving the two sets of locking plates to move closer to the two sets of columns to clamp and fix the two sets of pipes.

[0008] By adopting the above technical solution, when the pipe is transported to the bottom of the support frame, the drive mechanism drives two sets of locking plates to move along the slide groove towards the two sets of columns of the support frame. The locking plates press the pipe against the two sets of columns of the support frame. The first electric telescopic rod on the support frame extends, driving the pressure plate to move downward. The pressure plate presses the pipe against the machine body. The cutting wheel extends from below the pipe and enters the cutting seam to cut the pipe. This prevents the pipe from shifting left and right during cutting and from jumping up and down during cutting, thus facilitating the cutting wheel to extend from below the pipe into the machine body and cut the pipe.

[0009] Optionally, the drive mechanism includes a first lead screw, sprockets, a chain, and a first motor. The first motor is fixedly mounted on the machine body. Two sets of sprockets are spaced apart and rotatably mounted on the machine body. One set of sprockets is fixedly connected to the output shaft of the first motor. The two sets of sprockets are connected by the chain. Two sets of lead screws are provided. The lead screws have a first threaded section and a second threaded section. The first threaded section and the second threaded section are symmetrically arranged. Two sets of locking plates are threadedly connected to the first threaded section and the second threaded section, respectively. The ends of the two sets of lead screws are fixedly connected to the two sets of sprockets, respectively.

[0010] By adopting the above technical solution, when the first motor starts, the first motor drives the sprocket to rotate, the sprocket drives the chain to rotate, the chain drives another sprocket to rotate, the sprocket drives the first lead screw to rotate, and the two sets of locking plates located on the first threaded section and the second threaded section move towards the two sets of columns of the support frame respectively, and press the pipes delivered to the support frame against the columns of the support frame to prevent the pipes from shaking during cutting.

[0011] Optionally, a second lead screw is rotatably connected along the length of the machine body and at the end of the machine body near the pipe conveying end. The second lead screw is threadedly connected to a movable frame. A second motor is fixedly connected to the machine body. One end of the second lead screw is fixedly connected to the output shaft of the second motor. A third lead screw is rotatably connected to the support frame along the width of the machine body. The third lead screw is threadedly connected to a second electric telescopic rod. A third motor is fixedly connected to the support frame. The output shaft of the third motor is fixedly connected to one end of the third lead screw. A clamping member is fixedly connected to the telescopic end of the second electric telescopic rod.

[0012] By adopting the above technical solution, when the pipe is conveyed to the machine body, the second motor drives the second lead screw to rotate, the second lead screw drives the moving frame to move along the second lead screw, the third motor drives the third lead screw to rotate, so that the clamping member is aligned with the pipe on the machine body, the second electric telescopic rod extends, so that the clamping member moves downward, the clamping member presses the pipe against the machine body, the second motor reverses, so that the moving frame moves closer to the support frame, and the clamping member drags the pipe under the support frame.

[0013] Optionally, the clamping component includes a fixed plate, a gripping plate, an adjusting plate, and a spring. The fixed plate is fixedly connected to the telescopic end of the second electric telescopic rod. Two symmetrically arranged arc-shaped gripping plates are rotatably connected to the fixed plate. The adjusting plate is located between the two gripping plates. Both the gripping plates and the adjusting plate are provided with toothed grooves. The gripping plates and the adjusting plate mesh with each other through the toothed grooves. The fixed plate is provided with an adjusting groove that matches the adjusting plate. A spring is provided in the adjusting groove.

[0014] By adopting the above technical solution, when the second electric telescopic rod extends, the adjusting plate abuts against the pipe, causing the adjusting plate to rise into the adjusting groove of the fixed plate. The spring is compressed, and the toothed grooves on the adjusting plate and the gripper plate drive the gripper plate to rotate, reducing the clamping angle of the gripper plate, thereby making the gripper plate grip the pipe tightly. When the second electric telescopic rod retracts, the pipe separates from the adjusting plate, and the spring pops the adjusting plate out of the adjusting groove.

[0015] Optionally, the machine body has movable grooves on both sides away from the end of the pipe conveying. The machine body is slidably connected to a backing plate that matches the movable groove. A fourth lead screw is threaded to one end of the backing plate that passes through the machine body. A fourth motor is fixedly connected to the machine body. The output shaft of the fourth motor is fixedly connected to one end of the fourth lead screw.

[0016] By adopting the above technical solution, when the clamping component transports the pipe to the support frame, one end of the pipe is pressed against the abutment plate. The fourth motor drives the fourth lead screw to rotate, adjusting the distance between the abutment plate and the support frame. The abutment plate prevents the pipe from moving back and forth during cutting and can change the length of the pipe being cut.

[0017] Optionally, the end of the machine body away from the conveying pipe is provided with an inclined groove that slopes toward the side of the machine body.

[0018] By adopting the above technical solution, after the pipe is cut, the cut pipe rolls along the inclined groove to both sides of the machine body, making it convenient to collect the cut pipe.

[0019] Optionally, the locking plate is fixedly connected to a slag-blocking plate adapted to the cutting wheel.

[0020] By adopting the above technical solution, the slag baffle can prevent pipe fragments from splashing during pipe cutting. The first lead screw drives the locking plate and the slag baffle to move, which can scrape the pipe fragments off the machine body and keep the machine body clean.

[0021] Optionally, a rubber layer is provided on the surfaces of the gripping plate and the locking plate that contact the pipe.

[0022] By adopting the above technical solution, the rubber layer on the gripping plate and locking plate can increase the friction on the pipe, prevent the gripping plate from falling off when dragging the pipe, make the locking plate more firmly pressed against the pipe, and prevent the pipe from moving when cutting.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the pipe is conveyed to the support frame, the first screw drives the two sets of locking plates to move towards the two sets of columns of the support frame, so that the pipe is pressed against the columns of the support frame. The first electric telescopic rod extends to move the pressure plate, which presses the pipe against the machine body. The gripping plate moves the pipe under the support frame and presses one end of the pipe against the backing plate. This avoids quality problems caused by the pipe shaking when the cutting wheel cuts the pipe, and improves the pass rate of pipe production.

[0025] 2. When the pipes are conveyed to the support frame, the threads on the first lead screw are arranged in a centrally symmetrical manner. The first lead screw drives two sets of locking plates to move towards the two sets of columns of the support frame respectively. The two sets of locking plates respectively abut against the two sets of columns of the support frame, so that the two sets of cutting wheels cut the two sets of pipes. The two sets of fourth lead screws can adjust the position of the abutment plates respectively, thereby changing the cutting length of the pipes. The inclined grooves set in the machine body can make pipes of different lengths roll out to both sides of the machine body respectively, improving the production efficiency of pipes.

[0026] 3. When the pipe is conveyed to the machine body, the second electric telescopic rod extends, causing the adjusting plate to abut against the pipe. The adjusting plate moves along the adjusting groove, and the toothed grooves on the adjusting plate and the gripper plate mesh with each other, thereby causing the gripper plate to rotate and changing the clamping angle of the gripper plate, making the gripper plate and the pipe more firmly pressed together. This can adapt to pipes of different diameters and improve the practicality of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of this application;

[0029] Figure 3 It is along Figure 1 Schematic diagram of the cross-sectional structure along line AA;

[0030] Figure 4 This is a structural schematic diagram used in this application to illustrate the first lead screw, the first motor, the sprocket, and the chain;

[0031] Figure 5 yes Figure 2 Enlarged schematic diagram of part B.

[0032] Reference numerals: 11. Machine body; 12. Cutting wheel; 21. Support frame; 22. First electric telescopic rod; 23. Pressure plate; 31. Locking plate; 32. Slag baffle plate; 33. Slide chute; 41. First motor; 42. Sprocket; 43. Chain; 44. First lead screw; 51. Moving frame; 52. Second lead screw; 53. Second motor; 54. Third motor; 55. Third lead screw; 56. Second electric telescopic rod; 61. Fixed plate; 62. Adjusting plate; 63. Grab plate; 71. Fourth lead screw; 72. Fourth motor; 73. Support plate; 74. Moving chute; 8. Inclined chute. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses an apparatus for producing multilayer co-extruded composite pipes. (Refer to...) Figure 1-4The multi-layer co-extruded composite pipe production device includes a machine body 11. Two sets of retractable cutting wheels 12 are installed below the machine body 11. A U-shaped support frame 21 is fixedly connected to the machine body 11. The support frame 21 includes two sets of columns welded to the machine body 11. A first electric telescopic rod 22 is fixedly connected to the support frame 21. A pressure plate 23 is fixedly connected to the telescopic end of the first electric telescopic rod 22. The pressure plate 23 has a cutting slit adapted to the cutting wheels 12. The machine body 11 has grooves 33 parallel to the support frame 21 on both sides. Two sets of locking plates 31 adapted to the grooves 33 are slidably connected to the machine body 11. The locking plates 31 are close to... One side of the support frame 21 is welded or integrally formed with a concave slag baffle plate 32. The side of the locking plate 31 that contacts the pipe is provided with a rubber layer. One end of the locking plate 31 passes through the machine body 11. The machine body 11 is rotatably connected to two sets of first lead screws 44. The first lead screw 44 has a first threaded section and a second threaded section. The first threaded section and the second threaded section are symmetrically arranged. The two sets of locking plates 31 are respectively threadedly connected to the first threaded section and the second threaded section. One end of each of the two first lead screws 44 is fixedly connected to a sprocket 42. One of the sprockets 42 is fixedly connected to the output shaft of the first motor 41. A chain 43 is connected between the sprockets 42.

[0035] When the pipes are conveyed to the support frame 21, the first motor 41 drives the sprocket 42 to rotate. The sprocket 42 drives another sprocket 42 to rotate via the chain 43, thereby causing the two sets of first lead screws 44 to rotate. The two sets of first lead screws 44 cause the two sets of locking plates 31 to move along the center of the slide groove 33 toward the two sets of columns of the support frame 21. The two sets of locking plates 31 respectively abut against the two sets of columns of the support frame 21, and the two sets of locking plates 31 can fix the two sets of pipes at the same time. The first electric telescopic rod 22 extends, causing the pressure plate 23 to move downward, and the pressure plate 23 presses the pipe against the support frame 21. The machine bodies 11 are pressed together, and two sets of cutting wheels 12 extend from below the pipe and into the cutting groove of the pressure plate 23 to cut the locked pipe. The two sets of first lead screws 44 can make the locking plate 31 move more smoothly along the sliding grooves 33 on both sides of the support frame 21, preventing the locking plate 31 from shaking when fixing the pipe. The pressure plate 23 and the locking plate 31 can prevent the pipe from shifting and jumping during cutting, avoiding the phenomena of burrs, bevels and delamination when cutting the pipe. In addition, the device can also cut two sets of pipes at the same time, improving the production efficiency of the pipe.

[0036] In other feasible embodiments, the two sets of first lead screws 44 can be set as one set of first lead screws 44, the output shaft of the first motor 41 is fixedly connected to one end of the first lead screw 44, and the locking plates 31 located in the sliding grooves 33 on both sides of the support frame 21 are connected by the slag baffles 32; when the first motor 41 starts, it drives the first lead screw 44 to rotate, so that the two sets of locking plates 31 move toward the two sets of columns of the support frame 21 respectively. Compared with setting two sets of first lead screws 44, setting one set of first lead screws 44 reduces materials and saves costs.

[0037] Reference Figure 1 , Figure 2 and Figure 5 A second lead screw 52 is rotatably connected to the body 11. One end of the second lead screw 52 is fixedly connected to the output shaft of the second motor 53. The second lead screw 52 is threadedly connected to a movable frame 51. A third lead screw 55 is rotatably connected to the movable frame 51. A second electric telescopic rod 56 is threadedly connected to the third lead screw 55. One end of the third lead screw 55 is fixedly connected to the output shaft of the third motor 54. A fixed plate 61 is fixedly connected to the telescopic end of the second electric telescopic rod 56. Two arc-shaped gripping plates 63 are rotatably connected to the fixed plate 61. The side of the gripping plate 63 that contacts the pipe is provided with an anti-slip rubber layer. The end of the gripping plate 63 that connects to the fixed plate 61 is semi-circular and has a toothed groove or is integrally formed with wheel teeth. An adjusting plate 62 is lifted and lowered connected to the fixed plate 61. The adjusting plate 62 is located between the two gripping plates 63, and the side of the adjusting plate 62 that contacts the gripping plates 63 is also integrally formed with teeth. The fixed plate 61 has an adjusting groove, and a spring is fixedly connected in the adjusting groove.

[0038] When the pipe is conveyed onto the machine body 11, the second motor 53 drives the second lead screw 52 to rotate, and the second lead screw 52 drives the moving frame 51 to move along the length direction of the machine body 11. The third motor 54 drives the third lead screw 55 to rotate, and the third lead screw 55 drives the second electric telescopic rod 56 to move along the width direction of the machine body 11. When the second electric telescopic rod 56 extends, one end of the adjusting plate 62 contacts the pipe, and the adjusting plate 62 moves upward along the adjusting groove. The spring is compressed, and the teeth of the adjusting plate 62 and the gripper plate 63 mesh, causing the adjusting plate 62 to move upward. When the section plate 62 moves upward, it drives the gripper plate 63 to rotate, thereby reducing the clamping angle between the two gripper plates 63 and making the gripper plate 63 press tightly against the pipe. The second motor 53 reverses and drives the moving frame 51 to move to the support frame 21. The second electric telescopic rod 56 retracts, and the spring pushes the adjusting plate 62 back to its original state. The clamping angle between the two gripper plates 63 returns to its original state, and the pipe is dragged under the support frame 21 for cutting. The gripper plate 63 can cut pipes of different diameters, which improves the practicality of the device.

[0039] Reference Figure 1 and Figure 5 The machine body 11 has an inclined groove 8 at the end away from the conveying pipe, which is inclined to both sides. The bottom of the inclined groove 8 has a moving groove 74. The groove wall of the moving groove 74 is provided with size scale. The machine body 11 is rotatably connected to two sets of fourth lead screws 71. The fourth lead screw 71 is threadedly connected to a stop plate 73. One end of the fourth lead screw 71 is fixedly connected to the output shaft of the fourth motor 72.

[0040] When the fourth motor 72 starts, it drives the fourth lead screw 71 to rotate, thereby causing the abutment plate 73 to move along the direction of conveying the pipe. When the gripper plate 63 drags the pipe under the support frame 21, one end of the pipe is pressed against the abutment plate 73, which strengthens the fixation of the pipe. The positions of the two abutment plates 73 can be adjusted separately, which makes it convenient to cut the two sets of pipes into finished pipes of different lengths. After the pipe is cut, the fourth motor 72 reverses, and the abutment plate 73 separates from the cut pipe. Pipes of different lengths can roll along the inclined groove 8 to both sides of the machine body 11, which improves the production efficiency of the pipe.

[0041] The implementation principle of a multi-layer co-extruded composite pipe production device according to an embodiment of this application is as follows: When the pipe is conveyed to the machine body 11, the second motor 53 drives the second lead screw 52 to rotate, causing the moving frame 51 to move above the pipe. The third motor 54 drives the third lead screw 55 to rotate, causing the second electric telescopic rod 56 to move above the pipe. The second electric telescopic rod 56 extends, causing the adjusting plate 62 to abut against the pipe. The spring is compressed, and the adjusting plate 62 drives the gripping plate 63 to rotate, causing the gripping plate 63 to abut against the pipe. The moving frame 51 drags the pipe under the support frame 21 and abuts one end of the pipe against the abutment plate 73. The second electric telescopic rod 56 retracts, and the spring returns the adjusting plate 62 to its original position. The first motor 41 drives the second lead screw 55 to rotate. The screw 44 rotates, causing the locking plate 31 to move to both sides of the machine body 11, pressing the two sets of pipes against the two sets of columns of the support frame 21 respectively. The first electric telescopic rod 22 extends, causing the pressure plate 23 to move downward and press the pipes against the machine body 11. The two sets of cutting wheels 12 extend from below the pipes to cut the two sets of pipes. The cut pipes roll out along the inclined groove 8 to both sides of the machine body 11. This device fixes the pipes by setting the pressure plate 23, locking plate 31 and abutment plate 73, preventing the pipes from shaking during cutting, improving the qualified rate of pipe production. Furthermore, by setting two sets of locking plates 31 and two sets of cutting wheels 12, two sets of pipes can be cut simultaneously, improving the pipe production efficiency.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-layer co-extruded composite pipe production apparatus, characterized in that: The device includes a body (11) and two sets of cutting wheels (12) arranged below the body (11) for cutting two sets of pipes. The two sets of cutting wheels (12) are symmetrically arranged. A support frame (21) is fixedly connected to the body (11). A first electric telescopic rod (22) is fixedly connected to the support frame (21). A pressure plate (23) is fixedly connected to the telescopic end of the first electric telescopic rod (22). The pressure plate (23) has a cutting groove adapted to the cutting wheel (12). The body (11) has sliding grooves (33) on both sides parallel to the support frame (21). Two sets of locking plates (31) are slidably arranged on the sliding grooves (33). The support frame (21) includes two sets of columns stacked on each other. The body (11) is provided with a driving mechanism for driving the two sets of locking plates (31) to move closer to the two sets of columns to clamp and fix the two sets of pipes.

2. The multi-layer co-extruded composite pipe production apparatus according to claim 1, characterized in that: The driving mechanism includes a first lead screw (44), a sprocket (42), a chain (43), and a first motor (41). The first motor (41) is fixedly mounted on the machine body (11). Two sets of sprockets (42) are spaced apart. Both sets of sprockets (42) are rotatably mounted on the machine body (11), and one set is fixedly connected to the output shaft of the first motor (41). The two sets of sprockets (42) are connected by the chain (43). Two sets of lead screws are provided. The lead screws have a first threaded section and a second threaded section. The first threaded section and the second threaded section are symmetrically arranged. The two sets of locking plates (31) are threadedly connected to the first threaded section and the second threaded section, respectively. The ends of the two sets of lead screws are fixedly connected to the two sets of sprockets (42), respectively.

3. The multi-layer co-extruded composite pipe production apparatus according to claim 1, characterized in that: A second lead screw (52) is rotatably connected along the length of the machine body (11) and at the end of the machine body (11) near the pipe conveying end. The second lead screw (52) is threadedly connected to a moving frame (51). A second motor (53) is fixedly connected to the machine body (11). One end of the second lead screw (52) is fixedly connected to the output shaft of the second motor (53). A third lead screw (55) is rotatably connected to the support frame (21) along the width of the machine body (11). The third lead screw (55) is threadedly connected to a second electric telescopic rod (56). A third motor (54) is fixedly connected to the support frame (21). The output shaft of the third motor (54) is fixedly connected to one end of the third lead screw (55). A clamping member is fixedly connected to the telescopic end of the second electric telescopic rod (56).

4. The multi-layer co-extruded composite pipe production apparatus according to claim 3, characterized in that: The clamping component includes a fixed plate (61), a gripping plate (63), an adjusting plate (62), and a spring. The fixed plate (61) is fixedly connected to the telescopic end of the second electric telescopic rod (56). Two symmetrically arranged arc-shaped gripping plates (63) are rotatably connected to the fixed plate (61). The adjusting plate (62) is located between the two gripping plates (63). Both the gripping plate (63) and the adjusting plate (62) are provided with toothed grooves. The gripping plate (63) and the adjusting plate (62) mesh with each other through the toothed grooves. The fixed plate (61) is provided with an adjusting groove that matches the adjusting plate (62). A spring is provided in the adjusting groove.

5. The multi-layer co-extruded composite pipe production apparatus according to claim 1, characterized in that: The machine body (11) has movable grooves (74) on both sides away from the end of the pipe conveying. The machine body (11) is slidably connected to a stop plate (73) that is adapted to the movable groove (74). The end of the stop plate (73) that passes through the machine body (11) is threadedly connected to a fourth lead screw (71). A fourth motor (72) is fixedly connected to the machine body (11). The output shaft of the fourth motor (72) is fixedly connected to one end of the fourth lead screw (71).

6. The multi-layer co-extruded composite pipe production apparatus according to claim 1, characterized in that: The end of the machine body (11) away from the conveying pipe has an inclined groove (8) that slopes toward the side of the machine body (11).

7. The multi-layer co-extruded composite pipe production apparatus according to claim 2, characterized in that: The locking plate (31) is fixedly connected to a slag-blocking plate (32) adapted to the cutting wheel (12).

8. The multi-layer co-extruded composite pipe production apparatus according to claim 4, characterized in that: Both the gripping plate (63) and the locking plate (31) have rubber layers on the surfaces that contact the pipe.

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