Cutting machine for plastic pipe fitting machining

Abstract

The invention belongs to the technical field of pipe fitting machining, and particularly relates to a cutting machine for plastic pipe fitting machining, which comprises a workbench, a mounting frame, a disc and a fixing seat, the mounting frame is fixedly mounted on the workbench, the disc is fixed on the mounting frame, a through hole is formed in the disc, an annular rail coaxial with the disc is fixed on the disc, and the fixing seat is fixed on the annular rail. A rotating seat is arranged on the annular rail in a sliding fit mode, a cutting mechanism used for cutting a plastic pipe fitting is arranged on the rotating seat, and a crown gear ring coaxial with the disc is further fixed to the disc; and the fixed seat is arranged on the mounting frame in a sliding manner. A plastic pipe fitting can be cut from the two sides, bending deformation caused by one-way stress of the plastic pipe fitting is avoided, the cutting efficiency of the plastic pipe fitting is effectively improved, the plastic pipe fitting is annularly cut through the two sets of cutting assemblies, the cutting assemblies only need to move by the distance larger than the thickness of the pipe wall, and then the pipe fitting can be cut off; and the cutting efficiency can be further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe processing, and in particular relates to a cutting machine for processing plastic pipes. Background Art

[0002] With the improvement of people's living standards, environmental awareness and attention to health, plastic pipes and plastic fittings have gradually replaced traditional metal pipes due to their light weight, corrosion resistance, high compressive strength, energy saving, long service life and easy installation. They have become an important material for pipeline engineering in the field of water supply and drainage. When processing plastic pipe fittings, long pipes need to be cut into small sections for easy transportation and installation during use.

[0003] After searching, the national patent publication number CN110370339B discloses a high-efficiency plastic pipe cutting machine, which includes: a machine platform, a mounting frame, a cutting mechanism, a conveying mechanism, a collecting device and a clamping mechanism, and the mounting frame is arranged on the machine platform; the cutting mechanism is arranged on the lower side of the mounting frame, and the cutting mechanism includes a cutting wheel, a lifting mechanism for driving the cutting wheel to lift and lower, a lateral movement mechanism for driving the cutting wheel to move laterally, and a first motor for driving the cutting wheel to rotate.

[0004] The above solution still has some deficiencies in actual use, as follows:

[0005] 1. This solution uses a cylinder to drive the cutting wheel up and down to cut plastic pipes. However, since plastic pipes are relatively soft, the cutting wheel presses and cuts in one direction, which can easily cause the plastic pipes to deform and bend under pressure, thus affecting the quality of the pipes.

[0006] 2. The cutting wheel has a long travel distance during operation, that is, the cutting wheel needs to move a distance greater than the cross-sectional diameter of the pipe to cut the pipe. In continuous cutting work, the efficiency is low;

[0007] 3. This solution realizes the transportation of pipes by setting up an additional conveying motor to drive the belt. Multiple power drive devices make the overall coordination of the equipment poor during operation and increase the equipment cost and maintenance cost. Summary of the Invention

[0008] The purpose of the present invention is to provide a cutting machine for processing plastic pipe fittings in order to solve the problems of pipe fittings being easily bent under pressure and having low cutting efficiency as mentioned in the background art.

[0009] To achieve the above-mentioned object, the present invention adopts the following technical solutions: A cutting machine for processing plastic pipe fittings, comprising a workbench, a mounting frame, a disc and a fixing seat, wherein the mounting frame is slidably mounted on the workbench, the disc is fixed to the mounting frame, a through hole is provided in the disc, a coaxial annular track is fixed to the disc, a rotating seat is slidably engaged with the annular track, a cutting mechanism for cutting plastic pipe fittings is provided on the rotating seat, and a coaxial crown ring is also fixed to the disc;

[0010] The fixing seat is slidably arranged on the mounting frame, a positioning cylinder is fixedly connected to the fixing seat, and a positioning mechanism for fixing the plastic pipe is provided on the positioning cylinder;

[0011] The cutting mechanism includes two motors installed on a rotating seat, and a screw is fixed on the output shaft of the two motors. The screw is threaded with a special-shaped nut, and the special-shaped nut slides on the surface of the disc. Two groups of cutting components are provided on both sides of the through hole. The two groups of cutting components are fixedly connected to the two special-shaped nuts through connecting rods respectively. A gear I is fixed on the screw, and the two gears I are engaged with the crown gear ring. When the motor drives the two cutting components to approach cutting, the two cutting components rotate around the plastic pipe fitting to achieve ring cutting of the plastic pipe fitting.

[0012] Furthermore, an outer gear ring is fixedly connected to the rotating seat, and the outer gear ring is coaxially arranged with the through hole.

[0013] Furthermore, a gear II is rotatably mounted on the mounting frame, a rotating shaft is fixed to the gear II via a one-way bearing, and the gear II is meshed with the outer gear ring.

[0014] Furthermore, a threaded rod is rotated on the workbench, the threaded rod passes through the fixing seat and is threadably engaged with the fixing seat, and the threaded rod is coaxially fixed to the rotating shaft.

[0015] Furthermore, a conveyor belt is installed on the mounting frame. The conveyor belt is located on the output end side of the disc. The conveyor belt includes an output shaft for providing power, and a worm gear is fixed on the output shaft.

[0016] Furthermore, a worm is fixed on the rotating shaft, and the worm and the worm wheel are meshed with each other.

[0017] Furthermore, the positioning mechanism includes two clamping plates arranged in the positioning cylinder, and guide rods are fixed on the side walls of the two clamping plates that are away from each other. The guide rods pass through the inner wall of the positioning cylinder, and a pull ring is fixed on the guide rods. A spring is sleeved on the guide rod, and the two ends of the spring are respectively connected to the pull ring and the positioning cylinder.

[0018] Furthermore, the pressing plates have an arc-shaped structure, and anti-slip plates are fixed on the side walls of the two pressing plates that are close to each other.

[0019] The present invention has the following advantages:

[0020] 1. The present invention sets two sets of cutting components. When working, the two sets of cutting components are close to each other and cut the plastic pipe fittings from both sides, avoiding the problem of unidirectional force on the plastic pipe fittings during cutting, which causes bending and deformation. In addition, the two sets of cutting components cut towards each other at the same time, effectively improving the cutting efficiency of the plastic pipe fittings.

[0021] 2. The present invention provides a crown gear ring and a gear I. When the two groups of cutting components approach each other, the rotating seat is driven to rotate around the plastic pipe, and then the plastic pipe can be circularly cut by the two groups of cutting components. The cutting components only need to move a distance greater than the thickness of the pipe wall to cut the pipe, which can further improve the cutting efficiency.

[0022] 3. The present invention can intermittently push the plastic pipe by arranging the outer gear ring, gear II, one-way bearing, rotating shaft and threaded rod. That is, after the cutting is completed, the plastic pipe is automatically pushed a certain distance toward the disc, thereby realizing continuous cutting of the long pipe body.

[0023] 4. The present invention sets a conveyor belt, a worm gear and a worm, uses a rotating seat as a driving force, drives the conveyor belt to transport forward intermittently, and then can transport the plastic pipe sections that fall after cutting, without setting up an additional power drive device, reducing costs, and the cutting and transportation of the pipe fittings are carried out in a coordinated and tight manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a cutting machine for processing plastic pipe fittings provided by the present invention;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0027] Figure 4 This is a schematic side view of the structure of a disc in a cutting machine for processing plastic pipes provided by the present invention;

[0028] Figure 5 The present invention provides a schematic diagram of the internal structure of a positioning cylinder in a cutting machine for processing plastic pipes.

[0029] In the figure, 1 workbench, 2 mounting frame, 3 disc, 4 anti-skid plate, 5 rotating seat, 6 crown gear ring, 7 fixed seat, 8 positioning cylinder, 9 motor, 10 lead screw, 11 special-shaped nut, 12 cutting assembly, 13 connecting rod, 14 gear I, 15 one-way bearing, 16 rotating shaft, 17 threaded rod, 18 conveyor belt, 19 output shaft, 20 worm gear, 21 worm, 22 clamping plate, 23 guide rod, 24 pull ring, 25 spring, 26 gear II, 27 external gear ring. DETAILED DESCRIPTION

[0030] like Figure 1-5 As shown, a cutting machine for processing plastic pipe fittings includes a workbench 1, a mounting frame 2, a disc 3 and a fixed seat 7. The mounting frame 2 is slidably set on the workbench 1. Specifically, a slide rail is provided on the workbench 1, and the mounting frame 2 is slidably fitted on the slide rail. The disc 3 is fixed on the mounting frame 2, and a through hole is provided in the disc 3. A coaxial annular track is fixed on the disc 3, and a rotating seat 5 is slidably fitted on the annular track. The sliding structure of the sliding track is the existing technology and will not be elaborated here. A cutting mechanism for cutting plastic pipe fittings is provided on the rotating seat 5, and a crown ring 6 coaxial with the disc 3 is also fixed on the disc 3. The fixed seat 7 is slidably set on the mounting frame 2, and a positioning cylinder 8 is fixedly connected to the fixed seat 7. The positioning cylinder 8 is provided with a positioning mechanism for fixing the plastic pipe.

[0031] The cutting mechanism includes two motors 9 mounted on the rotating seat 5, and the output shafts of the two motors 9 are fixed with screws 10, and the screws 10 are threaded with special-shaped nuts 11, which slide on the surface of the disc 3. Two groups of cutting components 12 are provided on both sides of the through hole. The two groups of cutting components 12 are fixedly connected to the two special-shaped nuts 11 through connecting rods 13. Gears I 14 are fixed on the screws 10, and the two gears I 14 are engaged with the crown gear ring 6. When working, the motor 9 drives the two groups of cutting components 12 to move against each other. The plastic pipe fittings are cut from both sides to avoid the problem of bending and deformation caused by unidirectional force on the plastic pipe fittings during cutting, and the two sets of cutting components 12 cut towards each other at the same time, which effectively improves the cutting efficiency of the plastic pipe fittings. In the process of the two sets of cutting components 12 approaching each other, the rotating seat 5 is driven to rotate around the plastic pipe fittings, and then the plastic pipe fittings can be circularly cut by the two sets of cutting components 12. The cutting component 12 only needs to move a distance greater than the thickness of the pipe wall to achieve cutting of the pipe fittings, which can further improve the cutting efficiency.

[0032] The cutting assembly 12 is a prior art in the art and will not be elaborated herein.

[0033] Furthermore, an outer gear ring 27 is fixedly connected to the rotating seat 5 , and the outer gear ring 27 is coaxially arranged with the through hole.

[0034] Furthermore, a gear II 26 is rotatably mounted on the mounting frame 2 , a rotating shaft 16 is fixed to the gear II 26 via a one-way bearing 15 , and the gear II 26 is meshed with the outer gear ring 27 .

[0035] Furthermore, a threaded rod 17 rotates on the workbench 1, which passes through the fixed seat 7 and is threadedly engaged with the fixed seat 7. The threaded rod 17 is coaxially fixed to the rotating shaft 16. With the rotating seat 5 as the driving force, the fixed seat 7 can be driven to move intermittently toward the disc 3, and then the plastic pipe fittings can be pushed intermittently, that is, after the cutting is completed, the plastic pipe fittings are automatically pushed a certain distance toward the disc 3, so that continuous cutting of the long tube body can be achieved.

[0036] Furthermore, a conveyor belt 18 is installed on the mounting frame 2. The conveyor belt 18 is located on the output end side of the disc 3. The conveyor belt 18 includes an output shaft 19 for providing power. A worm gear 20 is fixed on the output shaft 19.

[0037] Furthermore, a worm 21 is fixed to the rotating shaft 16 , and the worm 21 and the worm wheel 20 are meshed with each other.

[0038] Furthermore, the positioning mechanism includes two clamping plates 22 arranged in the positioning cylinder 8, and guide rods 23 are fixed on the side walls of the two clamping plates 22 that are away from each other. The guide rods 23 pass through the inner wall of the positioning cylinder 8, and a pull ring 24 is fixed on the guide rod 23. A spring 25 is sleeved on the guide rod 23, and the two ends of the spring 25 are respectively connected to the pull ring 24 and the positioning cylinder 8. When working, the rotating seat 5 is used as the driving force to drive the conveyor belt 18 to be transported forward intermittently, and then the plastic pipe sections that fall after cutting can be transported. There is no need to set up an additional power drive device, which reduces costs, and the cutting and transportation of the pipe fittings are carried out in coordination and in close cooperation.

[0039] Furthermore, the clamping plate 22 adopts an arc-shaped structure, and an anti-slip plate 4 is fixed on the side walls of the two clamping plates 22 that are close to each other. The anti-slip plate 4 can be made of a rubber plate or a foam plate. On the one hand, it can increase the friction with the surface of the plastic pipe to prevent it from slipping during the cutting process. On the other hand, it can play a buffering role to prevent the pipe from being compressed and deformed.

[0040] When the present invention is in use, first, the two pull rings 24 are pulled to move the two pressing plates 22 away from each other, and then the long tube to be cut passes through the through holes on the positioning cylinder 8 and the disc 3 in turn, and then the pull ring 24 is released, and the pressing plate 22 is pressed against the surface of the tube by the spring 25 for positioning, and the two motors 9 are started and run synchronously to drive the lead screw 10 to rotate. Due to the threaded fit between the lead screw 10 and the special-shaped nut 11, the two sets of cutting assemblies 12 can be driven to approach each other, and the plastic tube can be cut from both sides. On the one hand, it can avoid the problem of bending and deformation caused by unidirectional force on the plastic tube during cutting, and on the other hand, the two sets of cutting assemblies 12 cut towards each other at the same time, which effectively improves the cutting efficiency of the plastic tube.

[0041] Furthermore, the electric gear I14 of the lead screw 10 rotates. Since the gear I14 and the crown gear ring 6 are meshed with each other, the rotating seat 5 is driven to rotate around the plastic pipe when the two sets of cutting components 12 approach each other, and the plastic pipe can be circularly cut by the two sets of cutting components 12. The cutting component 12 only needs to move a distance greater than the thickness of the pipe wall to cut the pipe, which can further improve the cutting efficiency.

[0042] During the cutting process, the rotating seat 5 rotates in the forward direction, driving the outer gear ring 27 to rotate synchronously. Since the gear II 26 and the outer gear ring 27 are engaged with each other, the gear II 26 can be driven to rotate. In this direction, the one-way bearing 15 can rotate freely, and the rotating shaft 16 does not rotate at this time.

[0043] When the cutting is completed, the motor 9 reverses, driving the two groups of cutting components 12 away from each other, causing the outer gear ring 27 to rotate in the opposite direction. In this direction, the one-way bearing 15 is locked, and then the rotating shaft 16 can be driven to rotate synchronously. The rotating shaft 16 drives the threaded rod 17 to rotate. Due to the threaded fit between the threaded rod 17 and the fixed seat 7, the fixed seat 7 can be driven to move toward the disc 3 to push the plastic pipe. That is, after the cutting is completed, the plastic pipe can be automatically pushed a distance toward the disc 3 to achieve intermittent transportation of the plastic pipe, thereby achieving continuous cutting of the long pipe body.

[0044] Moreover, when the rotating shaft 16 rotates, the worm 21 can be driven to rotate synchronously. Since the worm 21 is engaged with the worm wheel 20, the conveyor belt 18 can be driven to transport forward intermittently, and the plastic pipe sections that fall after cutting are transported. There is no need to set up an additional power drive device, which reduces costs, and the cutting and conveying of the pipe fittings are carried out in a coordinated and tight manner.

Claims

1. A cutting machine for processing plastic pipes, characterized in that: include: Workbench (1), A mounting frame (2), wherein the mounting frame (2) is slidably disposed on the workbench (1), A disc (3), the disc (3) being fixed on the mounting frame (2), the disc (3) being provided with a through hole, the disc (3) being provided with a coaxial annular track, the annular track being slidably matched with a rotating seat (5), the rotating seat (5) being provided with a cutting mechanism for cutting plastic pipe fittings, and the disc (3) being provided with a coaxial crown ring (6); A fixing seat (7), the fixing seat (7) being slidably arranged on the mounting frame (2), the fixing seat (7) being fixedly connected with a positioning cylinder (8), and the positioning cylinder (8) being provided with a positioning mechanism for fixing the plastic pipe; The cutting mechanism comprises two motors (9) mounted on a rotating seat (5), a lead screw (10) being fixed on the output shafts of the two motors (9), a special-shaped nut (11) being threadedly matched on the lead screw (10), the special-shaped nut (11) sliding on the surface of the disc (3), two groups of cutting assemblies (12) being arranged on both sides of the through hole, the two groups of cutting assemblies (12) being fixedly connected to the two special-shaped nuts (11) through connecting rods (13) respectively, a gear I (14) being fixed on the lead screw (10), the two gears I (14) being meshed with the crown gear ring (6), when the motor (9) drives the two cutting assemblies (12) to approach cutting, the two cutting assemblies (12) are rotated around the plastic pipe fitting, thereby realizing the ring cutting of the plastic pipe fitting.

2. The cutting machine for processing plastic pipes according to claim 1, characterized in that: An outer toothed ring (27) is fixedly connected to the rotating seat (5), and the outer toothed ring (27) is coaxially arranged with the through hole.

3. The plastic pipe processing cutting machine according to claim 2, characterized in that: A gear II (26) is rotatably mounted on the mounting frame (2), a rotating shaft (16) is fixed to the gear II (26) via a one-way bearing (15), and the gear II (26) is meshed with an outer gear ring (27).

4. The cutting machine for processing plastic pipes according to claim 3, characterized in that: A threaded rod (17) is rotatably mounted on the workbench (1); the threaded rod (17) penetrates the fixing seat (7) and is threadably engaged with the fixing seat (7); the threaded rod (17) is coaxially fixed to the rotating shaft (16).

5. The cutting machine for processing plastic pipes according to claim 3, characterized in that: A conveyor belt (18) is also installed on the mounting frame (2). The conveyor belt (18) is located on one side of the output end of the disc (3). The conveyor belt (18) includes an output shaft (19) for providing power. A worm gear (20) is fixed on the output shaft (19).

6. The cutting machine for processing plastic pipes according to claim 5, characterized in that: A worm (21) is fixed on the rotating shaft (16), and the worm (21) and the worm wheel (20) are meshed with each other.

7. The cutting machine for processing plastic pipes according to claim 1, characterized in that: The positioning mechanism comprises two clamping plates (22) arranged in the positioning cylinder (8), and guide rods (23) are fixed on the side walls of the two clamping plates (22) that are away from each other. The guide rods (23) penetrate the inner wall of the positioning cylinder (8), and a pull ring (24) is fixed on the guide rods (23). A spring (25) is sleeved on the guide rods (23), and the two ends of the spring (25) are respectively connected to the pull ring (24) and the positioning cylinder (8).

8. The plastic pipe processing cutting machine according to claim 7, characterized in that: The clamping plates (22) have an arc-shaped structure, and anti-slip plates (4) are fixed on the side walls of the two clamping plates (22) that are close to each other.

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