Cutting device for plastic pipe production
By setting a fixing ring and cutting wheel on the outside of the plastic pipe, combined with the drive assembly and the blowing device, the problems of uneven force and temperature increase during the cutting process of the plastic pipe are solved, and uniform force and temperature control are achieved at the cutting point, improving the cutting stability and the quality of the plastic pipe.
Patent Information
- Application Number
- CN202422505845.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-16
AI Technical Summary
During the cutting process of existing plastic pipe cutting devices, uncut parts are prone to bending, resulting in friction and heat generation, turning outward or wear at the cutting.
The fixing ring and multiple cutting wheels distributed on the outside of the plastic pipe are designed. The cutting wheels are driven to rotate on the outside of the plastic pipe by driving the assembly, and gradually cut in depth. Combined with the pressure block and the blowing device, it ensures that the force at the cutting is uniform and the temperature is reduced.
The force uniformity and temperature control at the cutting point are achieved, bending and wear at the cutting point of the plastic pipe, and the cutting stability and the quality of the plastic pipe are improved.
Smart Images
Figure CN223186574U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic pipe cutting, in particular to a cutting device for plastic pipe production. Background Art
[0002] Plastic pipes are typically made from synthetic resin, typically polyester, with stabilizers, lubricants, and plasticizers added. They are then extruded through a "molding" process within a pipe-making machine. They are primarily used for piping in building water supply systems, drainage, exhaust, and sewage systems, underground drainage systems, stormwater pipes, and conduit for electrical wiring installations. With rapid economic development, the use of plastic pipes is increasing. Plastic pipes are favored by the pipeline engineering community for their light weight, hygienic and safe operation, energy and metal savings, improved living environment, long service life, and safety and convenience. They are widely used in pipeline installation.
[0003] When existing devices cut plastic tubes, they usually use a cutting wheel to cut from one side of the plastic tube to the other. At this time, the cutting wheel first opens on one side of the plastic tube and gradually goes deeper. During this process, the part that has not been cut yet at the cutting position will have a bending tendency due to the pressure of the forward movement of the cutting wheel, which will cause the inner side of the cutting opening on the plastic tube to tilt toward the cutting wheel, and then the cut part will be pressed inward against the cutting wheel, generating greater friction and heat with the cutting wheel, and finally causing the cut part to be heated and turned outward or worn. For this reason, we propose a cutting device for plastic tube production. Utility Model Content
[0004] The utility model aims to solve the deficiencies in the prior art and provides a cutting device for producing plastic pipes. The device places the plastic pipe to be cut at the axis of a fixed ring, and then uses a plurality of cutting wheels distributed on the outside of the plastic pipe to rotate on the outside of the plastic pipe while moving toward the inside of the plastic pipe, thereby cutting the plastic pipe in circles and gradually deepening the cut. The cut is a gradually deepening ring, which can ensure that the force at the cutting position is uniform.
[0005] In order to solve the above technical problems, the utility model solves the problem that when cutting plastic tubes, the uncut parts will bend due to the pressure of the cutting wheel moving forward, causing the cut parts to press against the outside of the cutting wheel, generate heat, and turn outward or wear.
[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0007] A cutting device for plastic pipe production includes a mounting frame, a support assembly and a cutting assembly. The support assembly for supporting the plastic pipe is arranged on the top of the mounting frame. The cutting assembly for cutting the plastic pipe includes a fixed ring and a cutting wheel. The outer side of the fixed ring is fixed to the mounting frame. A plurality of cutting frames evenly distributed in the circumferential direction are arranged inside the fixed ring. A cutting motor is fixed to the outer side of the cutting frame. The cutting wheel is fixed to the output end of the cutting motor. The cutting wheel is rotatably arranged in the cutting frame. A driving assembly for driving the cutting wheel to rotate in the fixed ring is provided in the fixed ring.
[0008] Preferably, the driving assembly includes a driving motor, a rotating ring is provided for rotation inside the fixed ring, a gear ring is fixed on the outside of the rotating ring, the driving motor is fixed on the bottom inner side of the mounting frame, a gear meshing with the gear ring is fixed on the output end of the driving motor, a fixed frame evenly distributed in the circumferential direction is fixed inside the rotating ring, an electric push rod is fixed inside the fixed frame, the output end of the electric push rod passes through the outside of the fixed frame, and the cutting frame is fixed to the output end of the electric push rod for driving the cutting wheel to rotate on the outside of the plastic tube.
[0009] Preferably, the support assembly includes a control box, and there are two control boxes. The two control boxes are symmetrically fixed on both sides of the fixed ring. The telescopic control on the top of the control box is provided with a support block for supporting the plastic pipe. The supported plastic pipe is lifted to be coaxial with the fixed ring by lifting the support block.
[0010] Preferably, the support assembly also includes a pressure block, an auxiliary frame evenly distributed in the annular direction is fixed inside the fixed ring, the auxiliary frame is symmetrically arranged on both sides of the rotating ring, a cylinder is fixed inside the auxiliary frame, the output end of the cylinder passes through the outer side of the auxiliary frame, and there are multiple pressure blocks, which are respectively fixed at the output end of each cylinder, and are used to support and limit the middle part of the plastic pipe near the cutting position, which is convenient for subsequent cutting operations.
[0011] Preferably, an air pump is fixedly provided on the outside of the auxiliary frame, a hose is fixedly provided on the output end of the air pump, an exhaust pipe is fixedly provided inside the pressure block, both ends of the exhaust pipe pass through both ends of the pressure block, the hose is connected and fixed to the end of the exhaust pipe away from the cutting wheel, and the air pump is used to blow air at the cutting position, which can not only reduce the temperature of the cutting position of the plastic pipe, but also blow off the debris attached to the plastic pipe.
[0012] Preferably, one end of the exhaust pipe close to the cutting wheel is bent obliquely toward the center of the fixing ring, so that the wind blown out of the exhaust pipe reaches the cutting position directly.
[0013] Preferably, a reinforcement block is symmetrically fixed on the outside of the fixed ring, the reinforcement block is U-shaped, and the rotating ring and the gear ring are located inside the reinforcement block to reinforce and fix the fixed ring separated by the rotating ring.
[0014] Preferably, the outer side of the pressing block is made of rubber material. When the pressing block presses against the outer side of the plastic tube, the outer skin of the rubber material is dented by the reaction force of the plastic tube, thereby increasing the contact area between the pressing block and the outer side of the plastic tube.
[0015] Preferably, there are three cutting wheels, which are distributed on the inner side of the rotating ring in the shape of an equilateral triangle. When cutting, the plastic tube is simultaneously subjected to tangential forces from the three outer rings, and the cutting stability is higher.
[0016] Preferably, the top of the support block is an arc-shaped groove, so that the plastic tube can be placed in the center of the support block.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] The utility model places the plastic tube to be cut at the axis of a fixed ring, and then uses three cutting wheels distributed in an equilateral triangle on the outside of the plastic tube to rotate along with the rotating ring on the outside of the plastic tube, while moving toward the inside of the plastic tube by the thrust of an electric push rod, to cut the plastic tube gradually in circles. The cut part of the plastic tube gradually becomes thinner, and the cut opening is a gradually deepening ring, which can ensure that the force on the cutting part is uniform and prevent the cutting part of the plastic tube from bending inward during cutting.
[0019] By symmetrically arranging evenly distributed pressing blocks on the outside of the cutting wheel, the pressing portion of the pressing blocks on the plastic tube is closer to the cut portion than the support blocks. The fixed limiting effect of the pressing blocks can ensure that the cut portion of the plastic tube is straight during cutting.
[0020] By setting an air blowing exhaust pipe on the outside of the cutting wheel, the air is compressed and discharged from the exhaust pipe using an air pump. The discharged air directly acts on the contact point between the cutting wheel and the plastic tube, which can reduce the temperature of the plastic tube during cutting and blow off the debris adhering to the plastic tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the internal structure of the fixing ring of the utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the other side of the fixing ring of the utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the drive assembly of the utility model;
[0026] Figure 5 This is a schematic diagram of the relative positions of the pressing block and the plastic pipe of the utility model;
[0027] Figure 6 It is a side sectional schematic diagram of the fixing ring of the utility model.
[0028] Explanation of the figure numbers: 1. Mounting frame; 2. Support assembly; 3. Cutting assembly; 4. Fixed ring; 5. Cutting wheel; 6. Cutting frame; 7. Cutting motor; 8. Drive assembly; 9. Drive motor; 10. Rotating ring; 11. Gear ring; 12. Gear 13. Fixed frame; 14. Electric push rod; 15. Control box; 16. Support block; 17. Pressure block; 18. Auxiliary frame; 19. Cylinder; 20. Air pump; 21. Hose; 22. Exhaust pipe; 23. Strengthening block. DETAILED DESCRIPTION
[0029] The present invention is described in further detail below with reference to the accompanying drawings.
[0030] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0031] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.
[0032] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.
[0033] Example:
[0034] See also Figures 1-6A cutting device for plastic pipe production includes a mounting frame 1, a supporting assembly 2 and a cutting assembly 3. The supporting assembly 2 for supporting the plastic pipe is arranged on the top of the mounting frame 1. The cutting assembly 3 for cutting the plastic pipe includes a fixing ring 4 and a cutting wheel 5. The outer side of the fixing ring 4 is fixed to the mounting frame 1. A plurality of cutting frames 6 uniformly distributed in the circumferential direction are arranged inside the fixing ring 4. A cutting motor 7 is fixed to the outer side of the cutting frame 6. The cutting wheel 5 is fixed to the output end of the cutting motor 7. The cutting wheel 5 is rotatably arranged in the cutting frame 6. A driving assembly 8 for driving the cutting wheel 5 to rotate in the fixing ring 4 is provided in the fixing ring 4.
[0035] In the embodiment of the present application, the driving assembly 8 includes a driving motor 9, a rotating ring 10 is rotatably provided inside the fixed ring 4, a gear ring 11 is fixed on the outside of the rotating ring 10, the driving motor 9 is fixed at the bottom inside the mounting frame 1, and a gear 12 meshing with the gear ring 11 is fixed at the output end of the driving motor 9. A U-shaped reinforcement block 23 is symmetrically provided on the outside of the fixed ring 4 to ensure the strength of the fixed ring 4 and the stable rotation of the rotating ring 10. A circumferentially uniformly distributed fixed frame 13 is fixed inside the rotating ring 10, and an electric push rod 14 is fixed inside the fixed frame 13. The output end of the electric push rod 14 passes through the outside of the fixed frame 13, and the cutting frame 6 is fixed to the output end of the electric push rod 14 to drive the cutting wheel 5 to rotate on the outside of the plastic tube.
[0036] In an embodiment of the present application, the support assembly 2 includes a control box 15, and two control boxes 15 are provided. The two control boxes 15 are symmetrically fixed on both sides of the fixed ring 4. The top of the control box 15 is telescopically controlled to have a support block 16 for supporting the plastic pipe. The supported plastic pipe is lifted to be coaxial with the fixed ring 4 by lifting the support block 16.
[0037] In addition, the support assembly 2 also includes a pressure block 17. An auxiliary frame 18 that is evenly distributed in the circumferential direction is fixed in the fixed ring 4. The auxiliary frame 18 is symmetrically arranged on both sides of the rotating ring 10. A cylinder 19 is fixed in the auxiliary frame 18. The output end of the cylinder 19 passes through the outside of the auxiliary frame 18. There are multiple pressure blocks 17, and the pressure blocks 17 are respectively fixed at the output ends of each cylinder 19, which are used to support and limit the middle part of the plastic pipe near the cutting position, which is beneficial to subsequent cutting operations.
[0038] During implementation, the plastic tube is placed in the arc grooves of the two support blocks 16, and the control box 15 drives the support blocks 16 and the plastic tube to move up and down, and the plastic tube to be cut is placed at the axis of the fixed ring 4. The operation of the cylinder 19 drives the pressing blocks 17 symmetrically arranged on the outside of the cutting wheel 5 to move toward the plastic tube, and the plastic tube is pressed and limited. Since the outer side of the pressing block 17 is made of rubber material, when the pressing block 17 is pressed against the outside of the plastic tube, the outer skin of the rubber material is concave by the reaction force of the plastic tube, which can increase the contact area between the pressing block 17 and the outer side of the plastic tube. Since the distance between the pressing point of the pressing block 17 on the plastic tube and the cut part is closer than that between the support block 16 and the cut part, the fixed limiting effect of the pressing block 17 can ensure that the part of the plastic tube to be cut is straight during cutting. , start the cutting motor 7 to drive the cutting wheel 5 to rotate, and then drive the motor 9 to operate, and the engagement of the gear 12 and the gear ring 11 drives the rotating ring 10 to rotate, and then drives the cutting frame 6 equipped with the cutting wheel 5 to rotate around the plastic tube through the fixed frame 13 and the electric push rod 14. During the rotation process, the electric push rod 14 continues to operate to push the cutting wheel 5 into the inside of the plastic tube. The three rotating cutting wheels 5 distributed in the shape of a regular triangle on the outside of the plastic tube rotate along with the rotating ring 10 on the outside of the plastic tube, and move toward the inside of the plastic tube by the thrust of the electric push rod 14, cutting the plastic tube gradually in circles. The cut part of the plastic tube gradually becomes thinner, and the cut out is a gradually deepening ring, which can ensure that the force at the cutting part is uniform and prevent the cutting part of the plastic tube from bending inward during cutting.
[0039] In the embodiment of the present application, an air pump 20 is fixedly provided on the outside of the auxiliary frame 18, a hose 21 is fixedly provided on the output end of the air pump 20, an exhaust pipe 22 is fixedly provided inside the pressure block 17, both ends of the exhaust pipe 22 pass through the two ends of the pressure block 17, and the hose 21 is fixedly connected to the end of the exhaust pipe 22 away from the cutting wheel 5. By arranging an exhaust pipe 22 for blowing air on the outside of the cutting wheel 5, the air is compressed and pumped into the hose 21 by the air pump 20, and then discharged into the exhaust pipe 22 by the hose 21, and finally discharged from the exhaust pipe 22. Since the end of the exhaust pipe 22 close to the cutting wheel 5 is tilted and bent toward the center of the fixed ring 4, the discharged wind can directly act on the contact part between the cutting wheel 5 and the plastic tube, thereby reducing the temperature of the plastic tube during cutting, and at the same time, the debris adhering to the plastic tube can be blown off.
[0040] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles.
Claims
1. A cutting device for plastic pipe production, characterized in that: include: A mounting frame (1), a supporting assembly (2) and a cutting assembly (3), wherein the supporting assembly (2) for supporting the plastic tube is arranged on the top of the mounting frame (1), and the cutting assembly (3) for cutting the plastic tube comprises a fixing ring (4) and a cutting wheel (5), wherein the outer side of the fixing ring (4) is fixed to the mounting frame (1), a plurality of cutting frames (6) evenly distributed in an annular direction are arranged inside the fixing ring (4), a cutting motor (7) is fixed on the outer side of the cutting frame (6), the cutting wheel (5) is fixed to the output end of the cutting motor (7), the cutting wheel (5) is rotatably arranged inside the cutting frame (6), and a driving assembly (8) for driving the cutting wheel (5) to rotate inside the fixing ring (4) is arranged inside the fixing ring (4).
2. A cutting device for plastic pipe production according to claim 1, characterized in that: The driving assembly (8) includes a driving motor (9), a rotating ring (10) is rotatably provided inside the fixing ring (4), a gear ring (11) is fixedly provided on the outside of the rotating ring (10), the driving motor (9) is fixedly provided at the bottom inside the mounting frame (1), a gear (12) meshing with the gear ring (11) is fixedly provided at the output end of the driving motor (9), a fixing frame (13) uniformly distributed in an annular direction is fixedly provided inside the rotating ring (10), an electric push rod (14) is fixedly provided inside the fixing frame (13), the output end of the electric push rod (14) passes through the outside of the fixing frame (13), and the cutting frame (6) is fixed to the output end of the electric push rod (14).
3. A cutting device for plastic pipe production according to claim 2, characterized in that: The support assembly (2) includes a control box (15), two of which are symmetrically fixed on both sides of the fixing ring (4), and a support block (16) for supporting the plastic pipe is provided on the top of the control box (15) for telescopic control.
4. A cutting device for plastic pipe production according to claim 3, characterized in that: The support assembly (2) further includes a pressing block (17), an auxiliary frame (18) uniformly distributed in a circumferential direction is fixedly provided in the fixed ring (4), the auxiliary frame (18) is symmetrically arranged on both sides of the rotating ring (10), a cylinder (19) is fixedly provided in the auxiliary frame (18), the output end of the cylinder (19) passes through the outside of the auxiliary frame (18), a plurality of pressing blocks (17) are provided, and the pressing blocks (17) are respectively fixedly provided at the output end of each of the cylinders (19).
5. A cutting device for plastic pipe production according to claim 4, characterized in that: An air pump (20) is fixedly provided on the outside of the auxiliary frame (18), a hose (21) is fixedly provided on the output end of the air pump (20), an exhaust pipe (22) is fixedly provided inside the pressing block (17), both ends of the exhaust pipe (22) pass through both ends of the pressing block (17), and the hose (21) is connected and fixed to the end of the exhaust pipe (22) away from the cutting wheel (5).
6. A cutting device for plastic pipe production according to claim 5, characterized in that: One end of the exhaust pipe (22) close to the cutting wheel (5) is bent obliquely toward the center of the fixing ring (4).
7. A cutting device for plastic pipe production according to claim 2, characterized in that: A reinforcement block (23) is symmetrically fixedly provided on the outside of the fixed ring (4); the reinforcement block (23) is U-shaped; the rotating ring (10) and the gear ring (11) are located inside the reinforcement block (23).
8. The cutting device for plastic pipe production according to claim 4, characterized in that: The outer side of the pressing block (17) is made of rubber material.
9. A cutting device for plastic pipe production according to claim 2, characterized in that: The cutting wheels (5) are provided with three and are distributed in the form of a regular triangle on the inner side of the rotating ring (10).
10. The cutting device for plastic pipe production according to claim 3, characterized in that: The top of the support block (16) is an arc-shaped groove.