PVC pipe cooling and cutting production line

Abstract

A PVC pipe cooling cutting production line, including cooling setting device, pipe traction machine and cutting device which are arranged in sequence from front to back, the cooling setting device includes cooling box and circulating water pool, the circulating water pool is located below the cooling box, the cooling box is provided with a drain pipe which is communicated with the circulating water pool, the inlet end of the cooling box is respectively provided with upper and lower spray pipes which are communicated with the circulating water pool, and the outlet end of the cooling box is provided with a water removing air knife; the utility model has the advantages that: the upper and lower spray pipes spray and cool the outer side of the pipe wall at the same time, so that the pipe wall can be cooled and set synchronously, the water stain attached to the pipe wall can be effectively removed by the water removing air knife after setting, and the water stain is prevented from being taken out; the cutting stability is greatly ensured by the double air cylinders which press the two sides of the pipe cutting place synchronously, the upper and lower dust collecting hoods cooperate, the cutting debris and dust can be effectively collected, and the dust diffusion is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of PVX pipe production equipment, specifically to a PVC pipe cooling and cutting production line. Background Technology

[0002] PVC pipes are plasticizer-free, high-strength, and hard, primarily used for building water supply and drainage pipes, and industrial pipelines. They are produced through high-temperature plasticizing extrusion, cooling and shaping, and traction removal, followed by cutting into sections. Cooling is achieved through a spraying method. Existing production lines have the following problems: because the pipes are cylindrical, spraying is mostly done from the top and sides, while the bottom is cooled by water flowing down the outer wall of the pipe from above. This results in a low synchronous cooling effect on the outer wall of the pipe, causing some water stains to adhere to the PVC pipe after cooling and be carried away. During the cutting process, the pipe is mostly fixed on one side, resulting in low stability and significant dust emission, impacting the working environment. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a PVC pipe cooling and cutting production line.

[0004] This utility model includes a cooling and shaping device, a pipe traction machine and a cutting device arranged from front to back. The cooling and shaping device includes a cooling box and a circulating water pool. The circulating water pool is located below the cooling box. The cooling box is provided with a drain pipe that communicates with the circulating water pool. The inlet end of the cooling box is provided with an upper spray pipe and a lower spray pipe that communicate with the circulating water pool. The outlet end of the cooling box is provided with a water removal air knife.

[0005] The cutting device includes a fixed frame, a cutting table, a pipe clamping cylinder, and a cutting machine. The cutting table is slidably mounted on the fixed frame, the pipe clamping cylinder is mounted above the cutting table, and the cutting machine is movably mounted below the cutting table via a lifting cylinder. A pair of adjustable pipe positioning plates are respectively provided on the top of the cutting table at the front and rear ends of the cutting machine.

[0006] The lower spray pipe is fixedly installed on the cooling box, while the upper spray pipe and the water removal air knife can be adjusted up and down and installed on the cooling box.

[0007] The lower spray pipe is an arc-shaped pipe, and a set of nozzles with openings facing the center of the arc are provided on the pipe wall. Lifting rods are provided on both sides of the cooling box. The upper spray pipe can be adjusted up and down on the cooling box via the two lifting rods.

[0008] The upper spray pipe is equipped with a splash guard.

[0009] The dewatering air knife is a ring-shaped air knife. A support frame is provided on the cooling box at the discharge end, and a height adjustment screw is provided on the support frame. The dewatering air knife can be adjusted up and down on the support frame by adjusting the height of the support frame. Guide rods are provided on both sides of the dewatering air knife, and guide grooves that cooperate with the guide rods are provided on both sides of the support frame.

[0010] The cutting table is slidably mounted on the fixed frame via a linear slide, and a counterweight is connected to one end of the cutting table via a cable.

[0011] The cutting table is equipped with a cutting clearance hole. There are two pipe clamping cylinders, which are located on both sides of the cutting clearance hole. The piston rod of the pipe clamping cylinder is equipped with a clamping plate, and the middle of the clamping plate is equipped with an arc-shaped positioning groove with an opening facing downward.

[0012] The cutting table is equipped with an upper dust collection hood at the top and a lower dust collection hood at the bottom. Both sides of the upper and lower dust collection hoods are connected by pipes. The bottom of the lower dust collection hood is equipped with a discharge pipe, which contains an induced draft fan. One end of the discharge pipe is connected to a dust collection bag via a telescopic pipe.

[0013] The advantages of this utility model are: by spraying and cooling the outside of the pipe wall simultaneously through the upper and lower spray pipes, the pipe wall can be cooled and shaped synchronously around its perimeter. After shaping, the water-removing air knife can effectively remove water stains adhering to the pipe wall, preventing water stains from being carried out. The simultaneous pressing of both sides of the pipe cutting point by the double cylinders greatly ensures the stability of the cutting. The upper and lower dust collection hoods work together to effectively collect cutting debris and dust, reducing dust dispersion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the cooling and shaping device.

[0016] Figure 3 This is a schematic diagram of the installation structure of the upper and lower spray pipes.

[0017] Figure 4 This is a schematic diagram of the cutting device.

[0018] Figure 5 This is a schematic diagram of the internal structure of the cutting device. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] As shown in the attached figure, this utility model includes a cooling and shaping device 1, a pipe traction machine 2, and a cutting device 3 arranged sequentially from front to back. After the PVC pipe is extruded from the extruder, it is cooled and shaped by the cooling and shaping device 1. The pipe traction machine 2 is used to pull the cooled and shaped PVC pipe forward sequentially. The PVC pipe enters the cutting device 3 station for cutting. In this invention, both the pipe traction machine 2 and the cutting device 3 are equipped with height adjustment support feet at the bottom, which can be adjusted according to the diameter of the extruded PVC pipe. The pipe traction machine 2 in this invention is a tracked traction machine.

[0024] Structure and operation of cooling and shaping device 1: Cooling and shaping device 1 includes a cooling box 5 and a circulating water pool 6. The circulating water pool 6 is located below the cooling box 5. The cooling box 5 is provided with a drain pipe that communicates with the circulating water pool 6. The feeding end of the cooling box 5 is provided with an upper spray pipe 7 and a lower spray pipe 8 that communicate with the circulating water pool 6. The discharging end of the cooling box 5 is provided with a water removal air knife 9.

[0025] After the PVC pipes extruded from the extruder enter the cooling chamber 5, the upper spray pipe 7 and the lower spray pipe 8 simultaneously spray the upper and lower outer walls of the PVC pipes. The upper spray pipe 7 and the lower spray pipe 8 are located on the same vertical plane, ensuring that both the upper and lower outer walls of the PVC pipes cool down synchronously. When the cooled PVC pipes pass through the desiccant 9, the desiccant 9 blows off the water stains adhering to the outer wall of the PVC pipes, preventing water stains from being carried out. The drain pipe is located at the discharge end of the cooling chamber 5. The water sprayed into the cooling chamber 5 flows towards the discharge end and then returns to the circulating water tank 6 through the drain pipe. During this process, the water dissipates heat and cools down. The circulating water tank 6 is then pumped to supply water to the upper spray pipe 7 and the lower spray pipe 8 respectively.

[0026] Preferably, the lower spray pipe 8 is fixedly installed on the cooling box 5, while the upper spray pipe 7 and the water removal air knife 9 can be adjusted up and down and installed on the cooling box 5.

[0027] The heights of the upper spray pipe 7 and the dewatering air knife 9 can be adjusted according to the size of the extrusion pipe.

[0028] Preferably, the lower spray pipe 8 is an arc-shaped pipe, and a set of nozzles with openings facing the center of the arc are provided on the pipe wall. Lifting rods 11 are provided on both sides of the cooling box 5. The upper spray pipe 7 can be adjusted up and down on the cooling box 5 through the two lifting rods 11.

[0029] The lower spray pipe 8 is an arc-shaped pipe, with each nozzle facing the center of the arc. The sprayed water is concentrated in the upper middle part, which can evenly cover the lower half of the PVC pipe wall. The upper spray pipe 7 has a set of downward-opening spray holes. The water falls onto the PVC pipe in a free-fall manner and flows down the PVC pipe wall, wrapping the entire pipe wall from top to bottom. The lifting rod 11 consists of a fixed pipe and an adjusting pipe. The fixed pipe has a plug plate that matches the side plate of the cooling box 5. The fixed pipe is plugged into the side wall of the cooling box 5 through the plug plate. A locking screw is provided on one side of the plug plate for fixing with the side plate of the cooling box 5. The adjusting pipe has a set of adjusting holes, and the fixed pipe has a locking pin that matches the adjusting holes.

[0030] Furthermore, the upper spray pipe 7 is equipped with a splash guard 12. The splash guard 12 is used to prevent water from the spray from splashing onto the outside of the cooling box 5. The two ends of the splash guard 12 are respectively equipped with mounting seats for the upper spray pipe 7. One end of the adjusting pipe is connected to the mounting seat to control the upper spray pipe 7 and the splash guard 12 to move up and down together. The pump outlet is equipped with a three-way pipe that connects the upper spray pipe 7 and the lower spray pipe 8 respectively. In this case, the water inlet end of the upper spray pipe 7 is connected to the three-way pipe through a flexible hose, which facilitates the smooth height adjustment of the upper spray pipe 7.

[0031] Preferably, the dewatering air knife 9 is an annular air knife. A support frame 13 is provided on the cooling box 5 at the discharge end, and a height adjustment screw 15 is provided on the support frame 13. The dewatering air knife 9 can be adjusted up and down on the support frame 13 by the height adjustment screw 15. Guide rods 16 are provided on both sides of the dewatering air knife 9, and guide grooves that cooperate with the guide rods 16 are provided on both sides of the support frame 13.

[0032] The PVC pipe passes through the center of the annular air knife, effectively removing water stains from the outer wall of the PVC pipe. The height of the water-removing air knife 9 is adjusted by the height adjustment screw 15. In this case, the two ends of the support frame 13 are respectively provided with plug-in plates that mate with the side plates of the cooling box 5. A locking screw is provided on one side of the plug-in plate for fixing it to the side plate of the cooling box 5. The cooperation between the guide rod 16 and the guide groove ensures that the water-removing air knife 9 always remains horizontal and prevents deflection.

[0033] Structure and operation of cutting device 3: Cutting device 3 includes a fixed frame 20, a cutting table 21, a pipe clamping cylinder 22 and a cutting machine 23. The cutting table 21 is slidably mounted on the fixed frame 20. The pipe clamping cylinder 22 is mounted above the cutting table 21. The cutting machine 23 is movably mounted below the cutting table 21 via a lifting cylinder 24. A pair of adjustable pipe positioning plates 25 are respectively provided on the top of the cutting table 21 at the front and rear ends of the cutting machine 23.

[0034] The adjustable pipe positioning plate 25 positions the PVC pipe to prevent it from swaying left and right during cutting. The spacing can be adjusted according to the diameter of the PVC pipe. During cutting, the pipe clamping cylinder 22 presses the PVC pipe downward, making the cutting table 21 and the PVC pipe a single unit. At this time, the entire cutting table 21 will move forward with the PVC pipe. The lifting cylinder 24 controls the cutting machine 23 to extend upward to cut the PVC pipe. After cutting, the cutting machine 23 retracts downward, and then the clamping cylinder 22 releases the PVC pipe. The cutting table 21 returns to its original position, and the PVC pipe at the rear end continues to be conveyed forward until it reaches the next cutting point. The above actions are repeated to cut the PVC pipe at the rear end again.

[0035] The adjustable pipe positioning plate 25 has outwardly inclined bends at both its front and rear ends. The adjustable pipe positioning plate 25 at the feed end has a pair of adjusting elongated holes, each with a locking screw connected to the cutting table 21. The two front adjustable pipe positioning plates 25 are positioned laterally to adjust their spacing. The adjustable pipe positioning plate 25 at the discharge end is rotatably mounted and locked to the cutting table 21 via screws. The two rear adjustable pipe positioning plates 25 are positioned at their tilt angles to adjust their spacing to accommodate the diameter of the PVC pipe.

[0036] Preferably, the cutting table 21 is slidably mounted on the fixed frame 20 via a linear slide. One end of the cutting table 21 is connected to a counterweight 28 via a cable. The counterweight 28 and the cutting table 21 are connected by a cable. The fixed frame 20 is equipped with a reversing wheel that cooperates with the cable. After the cutting is completed during the movement of the cutting table 21, when the clamping cylinder 22 is released, the cutting table 21 automatically returns to its initial position under the action of the counterweight 28. The weight of the counterweight 28 must be greater than the frictional force generated when the PVC pipe moves on the cutting table 21. That is, when the cutting table 21 is in its initial position, the frictional force generated when the PVC pipe moves on the cutting table 21 will not cause the cutting table 21 to move forward.

[0037] Preferably, the cutting table 21 is provided with a cutting avoidance hole, and there are two pipe clamping cylinders 22, which are respectively located on both sides of the cutting avoidance hole. The piston rod of the pipe clamping cylinder 22 is provided with a clamping plate 29, and the middle of the clamping plate 29 is provided with an arc-shaped positioning groove with an opening facing downward.

[0038] The arc-shaped positioning groove presses against the outer wall of the cylindrical tube from above, effectively preventing the PVC tube from rolling or shifting. In this case, the radius of the arc-shaped positioning groove is no greater than the radius of the PVC tube.

[0039] Furthermore, the top of the cutting table 21 is provided with an upper dust collection hood 31, and the bottom of the cutting table 21 is provided with a lower dust collection hood 32. The two sides of the upper dust collection hood 31 and the lower dust collection hood 32 are connected by pipes. The bottom of the lower dust collection hood 32 is provided with a discharge pipe, and an induced draft fan 33 is provided inside the discharge pipe. One end of the discharge pipe is connected to a dust collection bag 34 through a telescopic pipe.

[0040] The working ends of a pair of pipe clamping cylinders 22 are both located inside the upper dust collection hood 31. The upper dust collection hood 31 has PVC pipe through holes on both sides. The lower dust collection hood 32 covers the saw blade of the cutting machine 23. The opening of the lower dust collection hood 32 faces upward. The lower dust collection hood 32 has a saw blade mounting shaft clearance hole on one side, so that the saw blade of the cutting machine 23 can move up and down inside the lower dust collection hood 32. The debris and dust generated during cutting can be collected through the upper dust collection hood 31 and the lower dust collection hood 32. The induced draft fan 33 is turned on to suck the debris and dust collected in the lower dust collection hood 32 into the dust collection bag 34.

Claims

1. A PVC pipe cooling and cutting production line, characterized in that... The cooling and shaping device (1), the pipe traction machine (2), and the cutting device (3) are arranged from front to back. The cooling and shaping device (1) includes a cooling box (5) and a circulating water pool (6). The circulating water pool (6) is located below the cooling box (5). The cooling box (5) is provided with a drain pipe that communicates with the circulating water pool (6). The feed end of the cooling box (5) is provided with an upper spray pipe (7) and a lower spray pipe (8) that communicate with the circulating water pool (6). The discharge end of the cooling box (5) is provided with a water removal air knife (9). The cutting device (3) includes a fixed frame (20), a cutting table (21), a pipe clamping cylinder (22), and a cutting machine (23). The cutting table (21) is slidably mounted on the fixed frame (20), the pipe clamping cylinder (22) is mounted above the cutting table (21), and the cutting machine (23) is movably mounted below the cutting table (21) via a lifting cylinder (24). A pair of adjustable pipe positioning plates (25) are respectively provided on the top of the cutting table (21) at the front and rear ends of the cutting machine (23).

2. The PVC pipe cooling and cutting production line according to claim 1, characterized in that... The lower spray pipe (8) is fixedly installed on the cooling box (5), and the upper spray pipe (7) and the water removal air knife (9) can be adjusted up and down and installed on the cooling box (5).

3. A PVC pipe cooling and cutting production line according to claim 2, characterized in that... The lower spray pipe (8) is an arc-shaped pipe. A set of nozzles with openings facing the center of the arc are provided on the pipe wall. Lifting rods (11) are provided on both sides of the cooling box (5). The upper spray pipe (7) can be installed on the cooling box (5) by adjusting the height through the two lifting rods (11).

4. A PVC pipe cooling and cutting production line according to claim 3, characterized in that... The upper spray pipe (7) is equipped with a splash guard (12).

5. A PVC pipe cooling and cutting production line according to claim 2, characterized in that... The dewatering air knife (9) is an annular air knife. A support frame (13) is provided on the cooling box (5) at the discharge end, and a height adjustment screw (15) is provided on the support frame (13). The dewatering air knife (9) can be adjusted up and down on the support frame (13) by the height adjustment screw (15). Guide rods (16) are provided on both sides of the dewatering air knife (9), and guide grooves that cooperate with the guide rods (16) are provided on both sides of the support frame (13).

6. A PVC pipe cooling and cutting production line according to claim 1, characterized in that... The cutting table (21) is slidably mounted on the fixed frame (20) via a linear slide, and one end of the cutting table (21) is connected to a counterweight (28) via a cable.

7. A PVC pipe cooling and cutting production line according to claim 1, characterized in that... The cutting table (21) is provided with a cutting clearance hole. There are two pipe clamping cylinders (22), which are located on both sides of the cutting clearance hole. The piston rod of the pipe clamping cylinder (22) is provided with a clamping plate (29), and the middle part of the clamping plate (29) is provided with an arc-shaped positioning groove with an opening facing downward.

8. A PVC pipe cooling and cutting production line according to claim 1, characterized in that... The top of the cutting table (21) is provided with an upper dust collection hood (31), and the bottom of the cutting table (21) is provided with a lower dust collection hood (32). The upper dust collection hood (31) and the lower dust collection hood (32) are connected by pipes on both sides. The bottom of the lower dust collection hood (32) is provided with a discharge pipe, and an induced draft fan (33) is provided inside the discharge pipe. One end of the discharge pipe is connected to a dust removal bag (34) through a telescopic pipe.

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