PVC finished pipe end rotating flat cutting device

Abstract

The utility model relates to PVC tubular product production and processing equipment, especially a PVC finished product pipe end rotary cutting device. The PVC finished product pipe end rotary cutting device contains two lifting air cylinders installed on the ground, the top fixed support plate, the support plate both ends are equipped with cutting machines, and the cutting machine blade penetrates the support plate. The ground is also equipped with a swingable feeding support, and the support end is movably equipped with two groups of parallel supporting rollers. The lifting air cylinder is telescopic, drives the support plate to adjust up and down, and adapts to the cutting height of different diameter PVC pipes. During cutting, the cutting machine drives the blade to rotate at high speed, cuts the pipe end, and guarantees the flatness of the cutting plane. The feeding support can swing to adjust the angle, which is convenient for pipe placement. The supporting roller can support the pipe material and rotate flexibly with the pipe material, reduce friction, accurately push the pipe material to the cutting position below the blade, and efficiently complete the cutting operation.

Description

Technical Field

[0001] This utility model relates to PVC pipe production and processing equipment, and in particular to a rotary cutting device for the end of a finished PVC pipe. Background Technology

[0002] In the PVC pipe manufacturing and processing industry, the flatness of the finished pipe ends directly affects the sealing performance, stability, and construction quality of subsequent pipe connections. Therefore, end trimming is one of the key processes before PVC pipes leave the factory. Currently, the industry mainly relies on two processing methods for end trimming of finished PVC pipes, but both have significant technical shortcomings and cannot meet the demands for efficient and precise production: Some small and medium-sized manufacturing enterprises still use manual hand-held cutting equipment (such as angle grinders and handheld cutters) for end-cutting. This method relies entirely on the operator's experience to control the cutting angle and force, which is not only prone to causing the cut plane to tilt and produce more burrs due to hand tremors and positioning deviations, making it impossible to guarantee the consistency of the flatness of the pipe ends in batches, but also poses safety hazards such as operator hand fatigue and injury from flying cutting debris; at the same time, manual processing can only handle one pipe at a time, resulting in extremely low cutting efficiency, which is difficult to adapt to the pace requirements of large-scale PVC pipe production.

[0003] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a rotary cutting device for the end of PVC finished pipes, so as to make it more valuable for industrial use. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a PVC finished pipe end rotary cutting device.

[0005] This utility model discloses a PVC finished pipe end rotary cutting device, which includes two lifting cylinders installed on the foundation. The top of the lifting cylinders is fixed with a support plate, and both ends of the support plate are equipped with cutting machines. The blades of the cutting machines pass through the support plate. A swingable feeding bracket is installed on the foundation, and two sets of parallel rollers are movably installed at the ends of the feeding bracket via a shaft.

[0006] This PVC finished pipe end rotary cutting and flattening device includes two lifting cylinders mounted on the foundation. The lifting cylinders can adjust the vertical position of the support plate fixed at the top through their own telescopic movement to adapt to the cutting height requirements of different straight PVC finished pipes. Cutting machines are installed at both ends of the support plate, and the blades of the cutting machines extend downward through the support plate. When cutting, the cutting machines can drive the blades to rotate at high speed, thereby rotary cutting and flattening the end of the PVC finished pipe to ensure the flatness of the cut surface. At the same time, a swingable feeding bracket is installed on the foundation. The feeding bracket can adjust its angle by swinging, making it convenient for operators to place the PVC finished pipe stably. Two sets of parallel rollers are movably mounted at its end via shafts. They can support the pipe after it is placed, and the rollers can rotate flexibly with the movement of the pipe, reducing friction between the pipe and the bracket, and facilitating the precise pushing of the pipe to the cutting position below the blade, thus helping to complete the end cutting and flattening operation efficiently.

[0007] Furthermore, a pressure roller is movably mounted below the support plate via a bearing mounting bracket, and a motor is fixed on the upper surface of the support plate. The output shaft of the motor and one end of the pressure roller are connected by a pulley and belt drive.

[0008] A pressure roller is movably mounted below the support plate via a bearing mounting bracket. This pressure roller can rotate flexibly with the help of the bearing mounting bracket. Its main function is to stably hold the PVC finished pipe from above when it enters the cutting area, preventing the pipe from shifting or shaking due to the rotational force of the blade during the cutting process, thus ensuring the accuracy of the cutting operation. At the same time, a motor is fixed on the upper surface of the support plate. The motor, as a power source, is connected to a pulley at one end of the pressure roller through a belt drive, which can smoothly transmit its power to the pressure roller, driving the pressure roller to rotate in a set direction and speed. This, in turn, while holding the pipe, assists in pushing the pipe to move smoothly along the cutting direction, so that the end of the pipe can evenly contact the rotating blade, ensuring a flat cutting surface and a continuous and smooth cutting process.

[0009] Furthermore, the end of the feeding bracket is movably mounted on the foundation via a shaft and bearings. A connecting rod is fixed in the middle of the feeding bracket, and an adapter rod is fixedly installed in the middle of the connecting rod. An adjusting cylinder is also installed on the foundation via a shaft and bearing seat. The telescopic rod of the adjusting cylinder is movably connected to the tail end of the adapter rod via a shaft.

[0010] The end of the feeding bracket is movably mounted on the foundation via a shaft and bearings, allowing the feeding bracket to swing flexibly around the mounting point as its axis. This facilitates adjustment of its tilt angle to adapt to different feeding requirements. A connecting rod is fixed in the middle of the feeding bracket, and an adapter rod is fixedly mounted in the middle of the connecting rod. An adjusting cylinder is also mounted on the foundation via a shaft and bearing seat. The telescopic rod of the adjusting cylinder is movably connected to the tail end of the adapter rod via a shaft. When the telescopic rod of the adjusting cylinder extends or retracts, it drives the feeding bracket to rotate around its mounting shaft at its end via the adapter rod and connecting rod. This allows for convenient adjustment of the tilt angle of the feeding bracket, better accommodating the feeding operation of PVC finished pipes of different specifications and ensuring that the pipes can be smoothly and accurately transported to the cutting position.

[0011] Furthermore, an inclined material plate frame is fixedly installed at the upper end of the feeding bracket and connecting rod via a support rod, and the two sides of the material plate frame are folded upward to form a limiting baffle.

[0012] An inclined material plate frame is fixedly installed at the upper end of the feeding bracket and connecting rod via a support rod. This material plate frame, with its inclined structure, can guide and transport the finished PVC pipes to be processed, allowing the pipes to slide smoothly along the inclined direction of the material plate frame under the assistance of gravity. This facilitates the transport of the pipes to the subsequent cutting operation area, reducing the workload of manual handling and pushing. At the same time, the two sides of the material plate frame fold upward to form limiting baffles. These two limiting baffles can block and limit the pipes from both sides, preventing the pipes from slipping off the sides of the material plate frame due to positional deviation during the sliding process. This ensures that the pipes are always transported stably along the preset path of the material plate frame, providing a guarantee for subsequent precise feeding and cutting operations.

[0013] Furthermore, an inclined unloading frame is installed on the foundation via support rods.

[0014] An inclined unloading rack is installed via a support rod. This unloading rack, relying on its own inclined structure, can support the finished PVC pipes after the end-cutting operation, allowing the finished pipes to slide naturally along the inclined direction of the unloading rack by their own weight. The finished pipes can be transported to the designated collection area or the next process station without manual handling, effectively reducing the intensity of manual labor and improving the continuity of the overall operation process.

[0015] Furthermore, two sets of scrap carts are placed on the foundation, located below the blades.

[0016] Two sets of waste carts are placed on the foundation, and the waste carts are specially positioned below the blades. This layout can accurately collect the cutting waste (such as PVC scraps, pipe end scraps, etc.) generated when the blades cut the ends of the finished PVC pipes, preventing the waste from falling directly onto the foundation or around the equipment, reducing the workload of subsequent cleaning operations, and preventing the accumulation of waste from affecting the normal operation of the equipment or causing safety hazards to the operators.

[0017] By means of the above-described solution, the present invention has at least the following advantages: I. This device significantly improves cutting accuracy and product consistency. The height of the support plate is flexibly adjusted by the lifting cylinder to adapt to the cutting needs of PVC pipes of different diameters. At the same time, the pressure roller, driven by the motor, stably holds and assists in pushing the pipe, ensuring that the pipe end is evenly in contact with the high-speed rotating blade, avoiding cutting deviation or shaking, effectively reducing problems such as tilting of the cutting plane and burrs, ensuring the consistency of the flatness of the pipe ends in batches, improving product quality stability, and meeting the requirements of subsequent pipe connection for end accuracy.

[0018] Second, the device significantly improves the efficiency of cutting operations. The two sets of cutting machines installed at both ends of the support plate can perform cutting operations simultaneously. With the material plate rack guiding and conveying the pipes and the rollers supporting and reducing the drag on the pipes, continuous operation of pipe feeding and cutting is achieved, eliminating the limitation of manual processing of one pipe at a time. At the same time, the unloading rack uses an inclined structure to realize the automatic conveying of finished pipes without manual handling, greatly shortening the operation cycle, adapting to the rhythm requirements of large-scale PVC pipe production, and reducing the intensity of manual labor.

[0019] Third, the device enhances operational safety and environmental cleanliness. Two sets of waste carts are precisely positioned below the blades to collect PVC scraps and offcuts generated during cutting in real time, preventing waste from scattering and accumulating, affecting equipment operation, or splashing and injuring people, thus reducing the workload of workshop cleaning. In addition, the overall automated operation reduces direct contact between personnel and cutting parts, reducing safety hazards such as hand fatigue and scrapes from debris, creating a safer and cleaner working environment for operators.

[0020] Fourth, the device has good adaptability and ease of operation. The adjusting cylinder can drive the feeding bracket to flexibly adjust the tilt angle through the adapter rod and connecting rod. The limiting baffles on both sides of the material plate frame can limit the pipes of different specifications, ensuring that PVC finished pipes of various diameters can be fed smoothly and positioned accurately. There is no need to frequently adjust the equipment structure for different pipes, reducing the difficulty of operation, improving the device's adaptability to diversified production needs, and further expanding its application scope in the field of PVC pipe processing.

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is another perspective illustration of the present invention. Figure 1 ; Figure 4 This is another perspective illustration of the present invention. Figure 2 ; In the diagram: 1. Lifting cylinder, 2. Support plate, 3. Cutting machine, 4. Blade, 5. Feeding bracket, 6. Idler roller, 7. Pressure roller, 8. Motor, 9. Connecting rod, 10. Adapter rod, 11. Adjusting cylinder, 12. Material plate frame, 13. Limiting baffle, 14. Unloading frame, 15. Waste cart. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] See Figure 1 and Figure 2The PVC finished pipe end rotary cutting device includes two lifting cylinders 1 mounted on the foundation. A support plate 2 is fixed to the top of each lifting cylinder 1, and a cutting machine 3 is mounted at both ends of the support plate 2. The blades 4 of the cutting machine 3 pass through the support plate 2. A swingable feeding bracket 5 is mounted on the foundation. Two sets of parallel rollers 6 are movably mounted at the ends of the feeding bracket 5 via shafts. The lifting cylinders 1 can extend and retract to adjust the support plate 2 up and down to accommodate the cutting height of PVC finished pipes of different diameters. The cutting machines 3 at both ends of the support plate 2 can drive the blades 4 to rotate at high speed to achieve rotary cutting of the pipe ends, ensuring a flat cutting surface. The swingable feeding bracket 5 allows for easy angle adjustment to stably place the pipe. The two sets of rollers 6 at its ends can support the pipe and rotate flexibly with the pipe, reducing friction to help the pipe be accurately pushed to the cutting position. The height adjustment function of the lifting cylinder 1 realizes the adaptability to pipes of different specifications, avoiding the difference in accuracy caused by changes in pipe specifications during manual cutting. The setting of two sets of cutting machines 3 improves the cutting efficiency and can process both ends of the pipe or multiple pipes at the same time. The design of the rollers 6 reduces the resistance during pipe transportation. Combined with the swingable feeding bracket 5, it makes feeding more convenient. The overall structure realizes semi-automatic operation, which not only improves the cutting accuracy and consistency, but also reduces the labor intensity of manual cutting, and solves the problems of low efficiency, poor accuracy and many safety hazards of traditional manual cutting.

[0026] See Figure 3 A pressure roller 7 is movably mounted below the support plate 2 via a bearing mounting bracket. A motor 8 is fixed to the upper surface of the support plate 2, and the output shaft of the motor 8 is connected to one end of the pressure roller 7 via a pulley. The pressure roller 7 can rotate flexibly with the help of the bearing mounting bracket, providing stable pressure from above when the PVC finished pipe enters the cutting area, preventing the pipe from shifting or shaking due to the rotational force of the blade 4. The motor 8, as the power source, smoothly transmits power to the pressure roller 7 via the pulley, driving the pressure roller 7 to rotate in a set direction and speed. This, in turn, assists in smoothly moving the pipe along the cutting direction while pressing it, ensuring that the pipe ends are evenly distributed. The uniform contact blade 4 and the stable pressing action of the pressure roller 7 effectively improve the positioning accuracy of the pipe during the cutting process, avoiding problems such as tilting of the cutting plane and burrs caused by pipe displacement during traditional cutting, and ensuring the consistency of the cutting quality. The transmission cooperation between the motor 8 and the pressure roller 7 realizes the automation of pressing and pushing, eliminating the need for manual assistance in fixing or pushing the pipe. This not only reduces the labor intensity of operators, but also reduces the errors caused by manual intervention. At the same time, the automated pushing method enables the pipe to pass through the cutting area at a uniform speed, further ensuring the flatness of the cutting plane. Working in conjunction with components such as the lifting cylinder 1 and the cutting machine 3 in the device, it significantly improves the accuracy and efficiency of the overall cutting operation.

[0027] See Figure 2 and Figure 4The feeding bracket 5 is movably mounted on the foundation via a shaft and bearings at its end, allowing it to swing flexibly around the mounting point. A connecting rod 9 is fixed to the middle of the feeding bracket 5, and a transition rod 10 is fixedly mounted to the middle of the connecting rod 9. An adjusting cylinder 11 is also mounted on the foundation via a shaft and bearing seats. The telescopic rod of the adjusting cylinder 11 is movably connected to the tail end of the transition rod 10 via a shaft. During operation, the extension and retraction of the telescopic rod of the adjusting cylinder 11 drives the connecting rod 9 via the transition rod 10, thereby driving the feeding bracket 5 to rotate around its end mounting shaft. This allows for adjustment of the tilt angle of the feeding bracket 5 to accommodate the feeding height and conveying requirements of different specifications of PVC finished pipes, ensuring that the pipes are stably placed on the rollers 6 at the end of the feeding bracket 5. The coordinated action of the throttle cylinder 11, the adapter rod 10, and the connecting rod 9 allows for convenient and precise control of the swing angle of the feeding bracket 5, eliminating the need for manual adjustment of the bracket position and reducing the intensity of manual operation. It also flexibly adapts to PVC finished pipes of different diameters, avoiding the hassle of replacing feeding components due to changes in pipe specifications, thus improving the versatility of the device. Furthermore, the feeding bracket 5, based on a movable installation method using shafts and bearings, ensures smooth and uninterrupted swinging. Combined with the support and drag reduction effect of the roller 6, it ensures accurate positioning of the pipe when transported from the material rack 12 to the cutting area, reducing the risk of pipe deviation and further guaranteeing the accuracy and efficiency of subsequent cutting operations. It also works in conjunction with components such as the lifting cylinder 1 and the pressure roller 7 in the device, perfecting the automated feeding process.

[0028] See Figure 4 An inclined material plate frame 12 is fixedly installed on the upper end of the feeding bracket 5 and the connecting rod 9 via a support rod. The two sides of the material plate frame 12 are folded upward to form limiting baffles 13. The material plate frame 12, with its own inclined structure, can support the PVC finished pipe to be processed and use gravity to assist the pipe to slide smoothly along the inclined direction, guiding and conveying the pipe to the end roller 6 of the feeding bracket 5 in the next process. The limiting baffles 13 on both sides of the material plate frame 12 can form a block from both sides of the pipe to prevent the pipe from slipping off the sides of the material plate frame 12 due to position displacement during the sliding process.

[0029] See Figure 1 An inclined unloading rack 14 is installed via support rods. The inclined structure supports the cut finished pipes, allowing the pipes to slide naturally along the rack to the collection area or the next process by gravity. The unloading rack 14 is firmly connected to the foundation, which can stably support the pipes and prevent them from tipping over. This design eliminates manual handling, reduces labor intensity, speeds up unloading to improve overall efficiency, avoids damage to the pipes, and does not require an additional power source. Together with the waste cart 15, it can separate finished products from waste materials and keep the site clean.

[0030] See Figure 1Two sets of waste carts 15 are placed on the foundation and located below the blade 4. They are specifically designed to collect PVC scraps and offcuts generated during cutting, preventing waste from scattering. This design allows the waste carts 15 to be used alternately without interrupting the operation, reducing the amount of cleaning, preventing waste from affecting equipment operation and causing injury, and can also work with the unloading rack 14 to separate finished products from waste, keeping the site clean and improving safety and management efficiency.

[0031] The working principle of this utility model is as follows: Pipe feeding: The operator places the finished PVC pipe to be cut flat on the material plate rack 12. The material plate rack 12, with its own inclined structure, guides the pipe to slide along the preset direction with the assistance of gravity. The limit baffles 13 on both sides prevent the pipe from deviating and slipping during the sliding process. At the same time, the extension and retraction of the telescopic rod of the control cylinder 11 can drive the action of the adapter rod 10 and the connecting rod 9, so that the feeding bracket 5 swings around its end mounting axis and is adjusted to the inclination angle that is suitable for the current pipe specification. This ensures that the pipe slides smoothly onto the two sets of rollers 6 at the end of the feeding bracket 5. The rollers 6 rotate flexibly with the movement of the pipe to reduce friction and assist the pipe in being accurately pushed to the cutting area below the blade 4 of the cutting machine 3.

[0032] Pipe clamping: After the device is started, the lifting cylinder 1 extends and retracts according to the pipe diameter, driving the top support plate 2 to adjust to a suitable height, so that the pressure roller 7 below the support plate 2 is in contact with the upper surface of the finished PVC pipe; the pressure roller 7 maintains a flexible rotation state with the cooperation of the bearing mounting bracket, and achieves stable clamping of the pipe by contacting the pipe surface, so as to avoid the pipe from shifting or shaking due to the rotation force of the blade 4 during the subsequent cutting process.

[0033] Tube body drive: The motor 8 fixed on the upper surface of the support plate 2 is turned on. The output shaft of the motor 8 transmits power to one end of the pressure roller 7 through the belt drive of the pulley, driving the pressure roller 7 to rotate at a set direction and speed. The rotating pressure roller 7 uses the friction with the surface of the tube to drive the tube to move smoothly along the cutting direction, ensuring that the end of the tube can contact the blade 4 evenly and at a constant speed, thus providing a guarantee for precise cutting.

[0034] Pipe cutting: When the end of the pipe moves to the position of the blade 4, the cutting machine 3 at both ends of the support plate 2 is started. The cutting machine 3 drives the blade 4 to rotate at high speed. As the pipe continues to move under the drive of the pressure roller 7, the high-speed rotating blade 4 performs a rotating and flattening process on the end of the pipe. The PVC debris and pipe end scraps generated during the cutting process fall directly into the two sets of waste carts 15 located below the blade 4, realizing real-time collection of waste.

[0035] Pipe unloading: The finished PVC pipe with the end cut flat is moved out of the cutting area and conveyed to the inclined unloading rack 14 installed on the foundation by the support rod under the continuous drive of the pressure roller 7. The unloading rack 14 relies on its own inclined structure to guide the finished pipe to slide naturally along the rack by gravity, and smoothly convey it to the designated finished product collection area or to the next production process. No manual handling is required to complete the entire unloading process.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A PVC finished pipe end rotary cutting device, comprising two lifting cylinders (1) mounted on a foundation, characterized in that: A support plate (2) is fixed at the top of the lifting cylinder (1). A cutting machine (3) is installed at both ends of the support plate (2). The blade (4) of the cutting machine (3) passes through the support plate (2). A swingable feeding bracket (5) is installed on the foundation. Two sets of parallel rollers (6) are installed at the end of the feeding bracket (5) via a shaft.

2. The PVC finished pipe end rotary cutting device according to claim 1, characterized in that: A pressure roller (7) is movably mounted on the underside of the support plate (2) via a bearing mounting bracket. A motor (8) is fixed on the upper surface of the support plate (2). The output shaft of the motor (8) and one end of the pressure roller (7) are connected by a belt drive via a pulley.

3. A PVC finished pipe end rotary cutting device according to claim 1 or 2, characterized in that: The end of the feeding bracket (5) is movably installed on the foundation via a shaft and bearing. A connecting rod (9) is fixed in the middle of the feeding bracket (5), and a transition rod (10) is fixedly installed in the middle of the connecting rod (9). An adjusting cylinder (11) is also installed on the foundation via a shaft and bearing seat. The telescopic rod of the adjusting cylinder (11) is movably connected to the tail end of the transition rod (10) via a shaft.

4. The PVC finished pipe end rotary cutting device according to claim 3, characterized in that: An inclined material plate frame (12) is fixedly installed on the upper end of the feeding bracket (5) and the connecting rod (9) by a support rod. The two sides of the material plate frame (12) are folded upward to form a limiting baffle (13).

5. The PVC finished pipe end rotary cutting device according to claim 4, characterized in that: An inclined unloading frame (14) is installed on the foundation via support rods.

6. A PVC finished pipe end rotary cutting device according to claim 4 or 5, characterized in that: Two sets of scrap carts (15) are placed on the foundation, with the scrap carts (15) located below the blades (4).

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