A polyvinylidene fluoride tube cutting device

Abstract

The utility model discloses a kind of for polyvinylidene fluoride pipe cutting device, including operation platform and scrap collecting box, operation platform bottom is provided with controller and driving motor, operation platform top is provided with the lining clamping assembly for the lining clamping of polyvinylidene fluoride pipe inner wall, operation platform top is also provided with fixing frame, and fixing frame output end is connected with hydraulic lift cylinder, and hydraulic lift cylinder output end is connected with lifting block, and lifting block bottom is provided with cutting mechanism, and lifting block two sides outer wall are fixedly connected with the pressure limiting assembly for the pressure of polyvinylidene fluoride pipe top, suitable for polyvinylidene fluoride such hardness is not high, easily extruded deformation material, to better for pipe material better cutting, and lining clamping assembly is larger in pipe material inner clamping area, to more effectively improve its cutting stability.

Description

Technical Field

[0001] This utility model relates to the field of polyvinylidene fluoride (PVDF) pipe cutting technology, specifically to a device for cutting PVDF pipes. Background Technology

[0002] Polyvinylidene fluoride (PVDF) pipes are widely used in chemical, electronic, and water treatment industries due to their excellent corrosion resistance, high temperature resistance, and mechanical strength. Given their material characteristics (high hardness, stable melting temperature, and the need to avoid cross-sectional deformation or burrs during cutting), specialized cutting devices must balance precision and material compatibility. These devices typically consist of core functional modules that enable pipe cutting operations.

[0003] Existing PVDF pipe cutting devices often cause pipe deformation when cutting thin-walled pipes due to unbalanced forces: firstly, thin-walled PVDF pipes themselves have weak resistance to compression and torque, and poor support; secondly, most devices use rigid clamps, making it difficult to control the force precisely. Clamping too tightly can easily cause deformation, while clamping too loosely can not fix the pipe in place. Furthermore, there may be instantaneous impact forces when the cutter feeds, which can further aggravate the deformation. This deformation can cause the cut to be tilted, rough, or even off-center, leading to the scrapping of the pipe. It may also affect subsequent assembly and sealing, requiring frequent machine shutdowns for adjustments and reducing efficiency. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or existing polyvinylidene fluoride pipe cutting devices, this utility model is proposed.

[0006] Therefore, the purpose of this invention is to provide a device for cutting polyvinylidene fluoride (PVDF) pipes.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A device for cutting polyvinylidene fluoride (PVDF) pipes includes an operating table and a chip collection box. A controller and a drive motor are located at the bottom of the operating table. A lead screw motor is mounted on the outer wall at the front of the operating table, with a lead screw connected to its output end. An inner lining clamping assembly for clamping the inner wall of the PVDF pipe is located at the top of the operating table. A fixing frame is also located at the top of the operating table, with a hydraulic lifting cylinder connected to its output end. A lifting block is connected to the output end of the hydraulic lifting cylinder. A cutting mechanism is located at the bottom of the lifting block. Pressing and limiting assemblies for pressing the top of the PVDF pipe are fixedly connected to the outer walls on both sides of the lifting block. As a preferred embodiment of the PVDF pipe cutting device of this invention, wherein... As a preferred embodiment of the polyvinylidene fluoride pipe cutting device described in this utility model, the inner lining clamping assembly includes a first fixing plate and a second fixing plate installed on the top of the operating table. A rotating rod is rotatably connected inside the first fixing plate, and the rotating rod and the output end of the drive motor are connected together by a transmission belt.

[0008] As a preferred embodiment of the polyvinylidene fluoride pipe cutting device of the present invention, a threaded rod is sleeved inside the rotating rod, and a connecting circular plate is rotatably connected to the end of the threaded rod. A connecting seat II is provided on the outer circumference of the connecting circular plate, and a plurality of connecting seats II are rotatably connected to the inner walls of the connecting rod II.

[0009] As a preferred embodiment of the polyvinylidene fluoride pipe cutting device of the present invention, the outer wall of the rotating rod is provided with a connecting seat 1, and the inner walls of multiple connecting seats 1 are rotatably connected to connecting rod 1, and the ends of connecting rod 1 and connecting rod 2 are respectively rotatably connected to mounting seat 1 and mounting seat 2.

[0010] As a preferred embodiment of the polyvinylidene fluoride pipe cutting device described in this utility model, the top of the first mounting base and the second mounting base are provided with an extension plate, and the top of the plurality of extension plates are provided with anti-slip rubber pads.

[0011] As a preferred embodiment of the polyvinylidene fluoride pipe cutting device of the present invention, the fixed plate two is rotatably connected to a rotating rod of the same structure, and the outer wall of the fixed plate two is provided with a sleeve seat, the outer circumferential wall of the sleeve seat being sleeved on the outer circumferential wall of the lead screw.

[0012] As a preferred embodiment of the polyvinylidene fluoride pipe cutting device described in this utility model, the pressure limiting component includes a support frame installed on the outer walls of both sides of the lifting block, a spring is provided at the top of the inner cavity of the support frame, and a telescopic plate is connected to the end of the spring.

[0013] In a preferred embodiment of the polyvinylidene fluoride (PVDF) pipe cutting device described in this utility model, the end of the telescopic plate is connected to a mounting frame, and a rotating roller is rotatably connected to the inner wall of the mounting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In actual use, the pipe can be sleeved on the outer wall of the rotating rod on the right end, and then the rotating rod on the left end is driven to its limit position through the lead screw motor and lead screw transmission. At this time, the two rotating rods are aligned. Then, the position where the pipe needs to be cut is moved below the cutting mechanism. Subsequently, multiple threaded rods are rotated to drive the connecting circular plates at their respective ends forward. Then, through the transmission of connecting rod one and connecting rod two, the expansion plate can be expanded to clamp the inner wall of the pipe. Then, during the cutting process, its telescopic plate cooperates with the rotating roller. Its function is to press against the top of the outer circumference of the pipe, thereby forming an internal and external counterforce through the inner wall support and the outer wall clamping, which counteracts the radial pressure during the cutting process. It is especially suitable for materials such as polyvinylidene fluoride, which have low hardness and are easily deformed by extrusion, thus enabling better cutting of the pipe. The double limiting method can also better limit the pipe. When the drive motor and the transmission belt drive the rotating rod to rotate, it can better reduce the vibration of the cutting process and the pipe shaking and deviation. In addition, the inner lining clamping component has a larger clamping area inside the pipe, thus more effectively improving the stability of the cutting. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] in: Figure 1 This is a schematic diagram of the overall structure of a polyvinylidene fluoride (PVDF) pipe cutting device according to the present invention. Figure 2 This is a schematic diagram of the overall top structure of a polyvinylidene fluoride (PVDF) pipe cutting device according to the present invention. Figure 3 This is a schematic diagram of the overall bottom structure of a polyvinylidene fluoride (PVDF) pipe cutting device according to the present invention. Figure 4 This is a schematic diagram of the inner lining clamping assembly structure of a polyvinylidene fluoride pipe cutting device according to the present invention. Figure 5 This is a schematic diagram of a hydraulic lifting cylinder for a polyvinylidene fluoride pipe cutting device according to the present invention. Figure 6This is a schematic diagram of the pressure limiting component of a polyvinylidene fluoride pipe cutting device according to the present invention.

[0017] The following are the labeling instructions in the diagram: 100, Operating table; 110, Controller; 120, Drive motor; 130, Transmission belt; 140, Screw motor; 200, Fixed plate one; 210, Rotating rod; 211, Connecting seat one; 212, Connecting rod one; 220, Threaded rod; 230, Connecting round plate; 231, Connecting seat two; 232, Connecting rod two; 240, Extension plate; 241, Mounting seat one; 242, Mounting seat two; 250, Fixed plate two; 260, Socket seat; 300, Fixed frame; 310, Hydraulic lifting cylinder; 320, Lifting block; 330, Cutting mechanism; 340, Support frame; 341, Spring; 342, Telescopic plate; 343, Mounting frame; 344, Rotating roller; 400, Chip collection box. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] This utility model provides a device for cutting polyvinylidene fluoride (PVDF) pipes, including an operating table 100 and a chip collection box 400. A controller 110 and a drive motor 120 are installed at the bottom of the operating table 100. A lead screw motor 140 is installed on the outer wall in front of the operating table 100, with a lead screw connected to its output end. An inner lining clamping assembly for clamping the inner wall of the PVDF pipe is installed at the top of the operating table 100. A fixing frame 300 is also installed at the top of the operating table, with a hydraulic lifting cylinder 310 connected to its output end. A lifting block 320 is connected to the output end of the hydraulic lifting cylinder 310. A cutting mechanism 330 for cutting operations is installed at the bottom of the lifting block 320. Pressure limiting components for auxiliary fixing of the top of the PVDF pipe are symmetrically fixed on both sides of the outer wall of the lifting block 320, further improving stability during cutting.

[0022] Specifically, the inner lining clamping assembly includes a first fixing plate 200 and a second fixing plate 250 installed on the top of the operating table 100. The first fixing plate 200 is rotatably connected to a rotating rod 210. The rotating rod 210 and the output end of the drive motor 120 are connected to a transmission belt 130 to facilitate the rotation of the pipe and cooperate with the cutting mechanism to cut the pipe. The cutting mechanism is driven by a motor for cutting. All of the above belong to the prior art.

[0023] In some embodiments, the method of the threaded rod 220 rotating to drive the connecting circular plate 230 to move forward can be replaced by an electric push rod, which can be powered by an external power source through a conductive slip ring.

[0024] Specifically, a threaded rod 220 is sleeved inside the rotating rod 210, and a connecting circular plate 230 is rotatably connected to the end of the threaded rod 220. A connecting seat 231 is provided on the outer circumference of the connecting circular plate 230, and a connecting rod 232 is rotatably connected to the inner wall of multiple connecting seats 231.

[0025] Specifically, the outer circumference of the rotating rod 210 is provided with a connecting seat 211, and the inner walls of multiple connecting seats 211 are rotatably connected to connecting rods 212. The ends of connecting rods 212 and connecting rods 232 are respectively rotatably connected to mounting seats 241 and 242, which facilitates the expansion of multiple expansion plates 240 to clamp the inner wall of the pipe.

[0026] Specifically, the top of mounting base 1 241 and mounting base 242 are provided with extension plates 240, and the top of multiple extension plates 240 are provided with anti-slip rubber pads. The outer wall of the anti-slip rubber pads is provided with anti-slip texture, thereby facilitating the improvement of clamping stability.

[0027] Specifically, a rotating rod 210 with the same structure is rotatably connected inside the fixed plate 250, and a sleeve seat 260 is provided on the outer wall of the fixed plate 250, with the outer circumference of the sleeve seat 260 sleeved on the outer circumference of the lead screw.

[0028] Specifically, the pressure limiting assembly includes a support frame 340 installed on the outer walls of both sides of the lifting block 320, a spring 341 is provided at the top of the inner cavity of the support frame 340, and a telescopic plate 342 is connected to the end of the spring 341.

[0029] Specifically, the telescopic plate 342 is connected to a mounting bracket 343 at its end. A rotating roller 344 is rotatably connected to the inner wall of the mounting bracket 343 to facilitate pressure and limit the top of the pipe. The rotating roller 344 will not affect the rotation and cutting of the pipe.

[0030] In some embodiments: the device can be powered by an external conventional power supply, and the device can be controlled by a controller 110, which can be controlled by a PLC. All of the above are existing technologies.

[0031] In some embodiments, after the pipe is cut, the lead screw motor can be controlled to drive the rotating rod at the left end to move backward, thereby removing the cut pipe. The outer circumference of the lead screw of the device can be fitted with a lead screw protective sleeve for protection. The lead screw protective sleeve is a limiting technology, which does not need to be described in detail.

[0032] In this embodiment, during actual use, the pipe can be fitted onto the outer circumference of the rotating rod 210 on the right end. Then, the rotating rod 210 on the left end is driven to its limit position by the lead screw motor 140 and the lead screw. At this point, the two rotating rods 210 are aligned. Then, the position where the pipe needs to be cut is moved below the cutting mechanism 330. Subsequently, multiple threaded rods 220 are rotated to drive the connecting circular plates 230 at their respective ends forward. Then, through the transmission of connecting rod 1 212 and connecting rod 232, the expansion plate 240 can be expanded to clamp the inner wall of the pipe. Then, during the cutting process, its telescopic plate 342 cooperates with... The rotating roller 344 presses against the top of the outer circumference of the pipe, thereby forming an internal and external counterforce through the inner wall support and the outer wall clamping, which counteracts the radial pressure during the cutting process. It is especially suitable for materials such as polyvinylidene fluoride, which have low hardness and are easily deformed by extrusion, thus better cutting the pipe. The double limiting method can also better limit the pipe. When the drive motor 120 and the transmission belt 130 drive the rotating rod 210 to rotate, it can better reduce the vibration of the cutting and the pipe shaking and deviation. In addition, the inner lining clamping component has a larger clamping area inside the pipe, thus more effectively improving the stability of the cutting.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for cutting polyvinylidene fluoride (PVDF) pipes, comprising an operating table (100) and a chip collection box (400), characterized in that, The bottom of the operating table (100) is provided with a controller (110) and a drive motor (120). The outer wall in front of the operating table (100) is provided with a lead screw motor (140). The output end of the lead screw motor (140) is connected to a lead screw. The top of the operating table (100) is provided with an inner lining clamping assembly for clamping the inner wall of the polyvinylidene fluoride pipe. The top of the operating table (100) is also provided with a fixing frame (300). The output end of the fixing frame (300) is connected to a hydraulic lifting cylinder (310). The output end of the hydraulic lifting cylinder (310) is connected to a lifting block (320). The bottom of the lifting block (320) is provided with a cutting mechanism (330). The outer walls on both sides of the lifting block (320) are fixedly connected with a pressing and limiting assembly for pressing the top of the polyvinylidene fluoride pipe.

2. The device for cutting polyvinylidene fluoride pipes according to claim 1, characterized in that, The inner lining clamping assembly includes a first fixing plate (200) and a second fixing plate (250) installed on the top of the operating table (100). The first fixing plate (200) has a rotating rod (210) rotatably connected inside. The rotating rod (210) and the output end of the drive motor (120) are connected together by a transmission belt (130).

3. The device for cutting polyvinylidene fluoride pipes according to claim 2, characterized in that, The rotating rod (210) is fitted with a threaded rod (220), and the end of the threaded rod (220) is rotatably connected to a connecting circular plate (230). The outer circumference of the connecting circular plate (230) is provided with a connecting seat (231), and the inner walls of multiple connecting seats (231) are rotatably connected to connecting rods (232).

4. The device for cutting polyvinylidene fluoride pipes according to claim 2, characterized in that, The outer circumference of the rotating rod (210) is provided with a connecting seat (211), and the inner walls of the multiple connecting seats (211) are rotatably connected to the connecting rod (212). The ends of the connecting rod (212) and the connecting rod (232) are respectively rotatably connected to the mounting seat (241) and the mounting seat (242).

5. The device for cutting polyvinylidene fluoride pipes according to claim 4, characterized in that, The top of the first mounting base (241) and the second mounting base (242) are provided with an extension plate (240), and the top of the multiple extension plates (240) are provided with anti-slip rubber pads.

6. The device for cutting polyvinylidene fluoride pipes according to claim 2, characterized in that, The fixed plate 2 (250) is rotatably connected to a rotating rod (210) of the same structure. The outer wall of the fixed plate 2 (250) is provided with a socket (260), and the outer circumferential wall of the socket (260) is sleeved on the outer circumferential wall of the lead screw.

7. The device for cutting polyvinylidene fluoride pipes according to claim 1, characterized in that, The pressure limiting assembly includes a support frame (340) installed on the outer walls of both sides of the lifting block (320). A spring (341) is provided at the top of the inner cavity of the support frame (340), and a telescopic plate (342) is connected to the end of the spring (341).

8. The device for cutting polyvinylidene fluoride pipes according to claim 7, characterized in that, The telescopic plate (342) is connected to a mounting frame (343) at its end, and a rotating roller (344) is rotatably connected to the inner wall of the mounting frame (343).

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