PVC-UH Drain Pipe Vacuum Shaping and Cooling Forming Process and Equipment

Abstract

The present invention discloses a technology belonging to the field of cooling and forming, specifically a vacuum sizing and cooling forming process and equipment for PVC-UH drainage pipes. The forming process includes the following steps: Step 1: Mix the PVC-UH raw materials, stabilizers, fillers, and lubricants in a ratio of 8:0.5:1:0.3, and extrude the mixed PVC-UH raw materials into the cooling and forming equipment through an extruder; Step 2: After the PVC-UH raw materials are extruded into the cooling and forming equipment, cool and form the PVC-UH raw materials through the cooling and forming equipment to process the PVC-UH raw materials into PVC-UH drainage pipes; Step 3: After the cooling and forming of the PVC-UH drainage pipes is completed, further discharge the cooled and formed PVC-UH drainage pipes. The beneficial effects of the present invention are: it helps to discharge the PVC-UH drainage pipes after cooling and forming, can conveniently cool and form the PVC-UH drainage pipes, and helps to ensure the working efficiency of processing the PVC-UH drainage pipes.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling and forming, and specifically to a vacuum sizing and cooling forming process and equipment for PVC-UH drain pipes. Background Art

[0002] PVC is a polymer formed by vinyl chloride monomer through free radical polymerization reaction mechanism under the action of initiators such as peroxides and azo compounds or under the action of light and heat. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively called vinyl chloride resins. PVC-UH drain pipes belong to high-performance hard polyethylene pipes for low-pressure sewage drainage, and are made of rigid polyvinyl chloride compounding materials that meet the standard requirements, extruded, and have an integrally formed steel skeleton sealing ring socket structure for sewage drainage pipes.

[0003] PVC-UH low-pressure sewage drainage pipes adopt highly efficient and excellent heat stabilizers and advanced production processes to ensure the quality of the pipes. They are widely used in the transportation of domestic sewage and specific industrial wastewater. After the PVC-UH drain pipes are processed by an extruder, it is necessary to cool and form the processed PVC-UH drain pipes to complete the processing of the PVC-UH drain pipes.

[0004] When the existing cooling and forming equipment is in use, it is not conducive to discharging the PVC-UH drain pipes after cooling and forming, and it is not convenient to cool and form the PVC-UH drain pipes, which will affect the working efficiency of processing the PVC-UH drain pipes.

[0005] Therefore, we propose a vacuum sizing and cooling forming process and equipment for PVC-UH drain pipes. Summary of the Invention

[0006] In view of the above and / or problems existing in the existing vacuum sizing and cooling forming process and equipment for PVC-UH drain pipes, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a vacuum sizing and cooling forming process and equipment for PVC-UH drain pipes. By improving the existing cooling and forming equipment, it can solve the problems in the above-mentioned existing technology that it is not conducive to discharging the PVC-UH drain pipes after cooling and forming, it is not convenient to cool and form the PVC-UH drain pipes, and it will affect the working efficiency of processing the PVC-UH drain pipes.

[0008] To solve the above technical problems, according to one aspect of the present invention, the following technical solutions are provided:

[0009] A vacuum sizing and cooling forming process for PVC-UH drain pipes, the forming process includes the following steps:

[0010] Step 1: Mix PVC-UH raw materials, stabilizers, fillers, and lubricants in a ratio of 8:0.5:1:0.3, and extrude the mixed PVC-UH raw materials into a cooling and forming device through an extruder;

[0011] Step 2: After extruding the PVC-UH raw materials into the cooling and forming device, cool and form the PVC-UH raw materials through the cooling and forming device to process the PVC-UH raw materials into PVC-UH drain pipes;

[0012] Step 3: After the cooling and forming of the PVC-UH drain pipes is completed, further discharge the cooled and formed PVC-UH drain pipes. After discharging the PVC-UH drain pipes, the processing of the PVC-UH drain pipes is completed.

[0013] The cooling and forming device for the vacuum shaping and cooling forming process of PVC-UH drain pipes in the present invention includes an extruder main body. A first mounting plate is installed on the lower surface of the extruder main body. One end surface of the first mounting plate close to the discharge port of the extruder main body is fixed with a second mounting plate. A moving block is slidably mounted on the upper surface of the second mounting plate in the horizontal direction. A second connecting block is installed on the upper surface of the moving block. Forming cylinders corresponding to the upper discharge ports of the extruder main body are installed in the middle of both ends of the second connecting block. Moving disks are slidably mounted in the forming cylinders in the horizontal direction. Forming rods are fixed in the middle of the surfaces of the moving disks close to the extruder main body. Refrigerating rods are installed in the middle of the forming rods.

[0014] As a preferred scheme of the cooling and forming device for the vacuum shaping and cooling forming process of PVC-UH drain pipes described in the present invention, wherein: Cooling grooves are respectively opened in the middle of the forming cylinder bodies. A first connecting pipe is commonly installed between the middle parts of the forming cylinders close to each other. The first connecting pipe helps to connect the cooling grooves on the forming cylinders. First through holes matching the inner ring surface of the first connecting pipe are respectively opened in the middle parts of the forming cylinders close to each other. The first through holes on the forming cylinders are in a communicating state with the corresponding cooling grooves.

[0015] As a preferred scheme of the cooling and forming device for the vacuum shaping and cooling forming process of PVC-UH drain pipes described in the present invention, wherein: Second connecting pipes are respectively installed in the middle parts of the forming cylinders far from each other. Installation pipes are fixed at the far ends of the second connecting pipes. Second through holes matching the second connecting pipes are respectively opened in the middle parts of the forming cylinders far from each other. The second through holes on the forming cylinders are in a communicating state with the corresponding cooling grooves. The second through holes help to communicate the cooling grooves on the forming cylinders with the second connecting pipes.

[0016] As a preferred solution of the cooling and forming device for the PVC-UH drainage pipe vacuum sizing and cooling forming process described in the present invention, wherein: corresponding to the first connecting pipe and the second connecting pipe on the second connecting block, there are provided matching retention grooves. The retention grooves on the second connecting block help to limit the first connecting pipe and the second connecting pipe. The forming cylinders penetrate through both side surfaces of the corresponding positions on the second connecting block, and the second connecting block is provided with matching retention holes corresponding to the forming cylinders.

[0017] As a preferred solution of the cooling and forming device for the PVC-UH drainage pipe vacuum sizing and cooling forming process described in the present invention, wherein: on the surface of one end of the forming cylinder close to the extruder body, there are fixedly provided sealing gaskets that fit with each other. The forming cylinder can fix and limit the sealing gaskets. Between the surfaces of the other ends of the forming cylinders far from the sealing gaskets, there is fixedly provided a baffle. At both ends of the side surface of the baffle far from the forming cylinder, there are respectively installed electric telescopic rods corresponding to the moving plates.

[0018] As a preferred solution of the cooling and forming device for the PVC-UH drainage pipe vacuum sizing and cooling forming process described in the present invention, wherein: the output rods of the electric telescopic rods all face the baffle, and the output rods of the electric telescopic rods penetrate through both side surfaces of the corresponding positions on the baffle. One end of the output rod of the electric telescopic rod close to the moving plate is fixedly connected to the corresponding position on the corresponding moving plate. The electric telescopic rods help to drive the moving plates to move.

[0019] As a preferred solution of the cooling and forming device for the PVC-UH drainage pipe vacuum sizing and cooling forming process described in the present invention, wherein: at both ends of the upper surface of the second mounting plate, there are fixedly provided fixing plates. In the middle of each fixing plate, there is rotatably installed a rotating rod through a bearing. The rotating rods penetrate through both side surfaces of the middle parts of the corresponding fixing plates. Between the opposite ends of the rotating rods, there is fixedly provided a screw rod. The rotating rods help to rotate and limit the screw rod. The screw rod penetrates through both side surfaces of the middle part of the moving block and is threadedly connected to the middle part of the moving block.

[0020] As a preferred solution of the cooling and forming device for the PVC-UH drainage pipe vacuum sizing and cooling forming process described in the present invention, wherein: on the upper surface of the moving block, there is fixedly provided a first connecting block. The upper surface of the first connecting block is fixedly connected to the corresponding position on the lower surface of the second connecting block. In the middle of the lower surface of the moving block, there is fixedly provided a clamping block. On the upper surface of the second mounting plate, there is provided a matching card slot corresponding to the clamping block. The clamping block is located in the card slot and is slidably connected to the card slot in the horizontal direction. The card slot and the clamping block help to limit the moving block and facilitate the stable movement of the moving block.

[0021] As a preferred embodiment of the cooling and forming device for the PVC-UH drainage pipe vacuum sizing and cooling forming process described in the present invention, wherein: a rotating motor is installed corresponding to the rotating rod in the middle of the surface of the fixed plate on one side away from the moving block, and the output shaft of the rotating motor faces the rotating rod and is fixedly connected to the opposite end on the corresponding rotating rod. The rotating motor helps drive the rotation of the rotating rod, facilitating the use of the rotating rod.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0023] 1. In the present invention, the PVC-UH drainage pipe can be formed and discharged at the same time, shortening the production time of the PVC-UH drainage pipe and facilitating the batch production of the PVC-UH drainage pipe.

[0024] 2. In the present invention, when the moving disk moves horizontally, it can drive the formed PVC-UH drainage pipe to move outside the forming cylinder through the forming rod, facilitating the removal of the formed PVC-UH drainage pipe. During use, it helps to discharge the PVC-UH drainage pipe after cooling and forming, enabling convenient cooling and forming of the PVC-UH drainage pipe and contributing to ensuring the working efficiency of processing the PVC-UH drainage pipe.

[0025] 3. In the present invention, the refrigerating rod can cool and form the inner side of the PVC-UH drainage pipe raw material to be formed through the forming rod, and the cooling water can cool and form the outer side of the PVC-UH drainage pipe raw material to be formed through the cooling tank and the forming cylinder. The first connecting pipe and the first through hole can communicate with the cooling tank on the forming cylinder to facilitate the circulation of the cooling water. The second connecting block can limit the first connecting pipe and the second connecting pipe through the retaining groove, facilitating the stable use of the first connecting pipe and the second connecting pipe.

[0026] 4. In the present invention, the fixed plate can limit the screw rod through the rotating rod, facilitating the stable rotation of the screw rod. When the screw rod rotates, the moving block threadedly connected to the screw rod will move horizontally. When the moving block moves horizontally, it can drive the clamping block to move in the clamping groove on the second mounting plate. The second mounting plate can limit the moving block through the clamping groove and the clamping block, contributing to the stable movement of the moving block. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the cooling and forming process flow of Embodiment 1 in the present invention;

[0028] Figure 2 It is a schematic structural diagram of Embodiment 1 in the present invention;

[0029] Figure 3Schematic diagram of the gasket structure in Embodiment 1 of the present invention;

[0030] Figure 4 Schematic diagram of the baffle structure in Embodiment 1 of the present invention;

[0031] Figure 5 Schematic diagram of the installation pipe structure in Embodiment 1 of the present invention;

[0032] Figure 6 Schematic diagram of the first mounting plate structure in Embodiment 1 of the present invention;

[0033] Figure 7 Schematic diagram of the clamping block structure in Embodiment 1 of the present invention;

[0034] Figure 8 Schematic diagram of the rotating rod structure in Embodiment 1 of the present invention;

[0035] Figure 9 Schematic diagram of the moving disk structure in Embodiment 1 of the present invention;

[0036] Figure 10 Is Figure 9 Partial enlarged schematic diagram of part A in;

[0037] Figure 11 Schematic diagram of the structure in Embodiment 2 of the present invention;

[0038] Figure 12 Partial schematic of the discharging mechanism in Embodiment 2 of the present invention Figure 1 ;

[0039] Figure 13 Partial schematic of the discharging mechanism in Embodiment 2 of the present invention Figure 2 . Detailed implementation manners

[0040] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various local modifications to the disclosed embodiments are obvious, and without departing from the spirit and scope of this specification, the general principles defined here can be applied to other embodiments and applications. Therefore, this specification is not limited to the shown embodiments, but has the broadest scope consistent with the claims.

[0041] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0042] Secondly, the terms "first", "second" and similar words do not denote any order, quantity or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of the present application.

[0043] In addition, the terms "installed", "set up", "provided with", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components.

[0044] For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] Regarding the drawings of the present application, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0046] Embodiment 1:

[0047] The present invention provides a PVC-UH drain pipe vacuum sizing and cooling forming process and equipment, which has the advantages of being helpful for discharging the PVC-UH drain pipe after cooling and forming, being able to conveniently cool and form the PVC-UH drain pipe, and being helpful for ensuring the working efficiency of processing the PVC-UH drain pipe;

[0048] Please refer to Figure 1 , the PVC-UH drain pipe vacuum sizing and cooling forming process, and this forming process includes the following steps:

[0049] Step 1: Mix the PVC-UH raw material, stabilizer, filler, and lubricant in a ratio of 8:0.5:1:0.3, and extrude the mixed PVC-UH raw material into the cooling and forming equipment through an extruder;

[0050] Step 2: After extruding the PVC-UH raw material into the cooling and forming equipment, the PVC-UH raw material is cooled and formed by the cooling and forming equipment to process the PVC-UH raw material into a PVC-UH drainage pipe;

[0051] Step 3: After the cooling and forming of the PVC-UH drainage pipe is completed, the cooled and formed PVC-UH drainage pipe is further discharged. After the PVC-UH drainage pipe is discharged, the processing of the PVC-UH drainage pipe is completed.

[0052] Please refer to Figures 2 - 10 , in the cooling and forming equipment of the vacuum sizing and cooling forming process of the PVC-UH drainage pipe in the present invention, it includes an extruder main body 1. A first mounting plate 2 is installed on the lower surface of the extruder main body 1. One end surface of the first mounting plate 2 close to the discharge port of the extruder main body 1 is fixed with a second mounting plate 3. A moving block 8 is slidably mounted on the upper surface of the second mounting plate 3 along the horizontal direction. A second connecting block 12 is installed on the upper surface of the moving block 8. Forming cylinders 13 corresponding to the upper discharge ports on the extruder main body 1 are installed in the middle of both ends of the second connecting block 12. Moving disks 24 are slidably mounted in the forming cylinders 13 along the horizontal direction. Forming rods 16 are fixed in the middle of the surfaces of the moving disks 24 close to the extruder main body 1. Refrigerating rods 17 are installed in the middle of the forming rods 16. When the moving disks 24 move along the horizontal direction, they can drive the formed PVC-UH drainage pipe to move to the outside of the forming cylinders 13 through the forming rods 16, so as to facilitate the removal of the formed PVC-UH drainage pipe. During use, it helps to discharge the cooled and formed PVC-UH drainage pipe, can conveniently cool and form the PVC-UH drainage pipe, and helps to ensure the working efficiency of processing the PVC-UH drainage pipe.

[0053] Among them, cooling grooves 18 are respectively opened in the middle of the barrel bodies of the forming cylinders 13. A first connecting pipe 21 is commonly installed between the middle parts of the forming cylinders 13 close to each other. The first connecting pipe 21 helps to connect the cooling grooves 18 on the forming cylinders 13. First through holes 19 matching the inner ring surface of the first connecting pipe 21 are respectively opened in the middle parts of the forming cylinders 13 close to each other. The first through holes 19 on the forming cylinders 13 are in a communicating state with the corresponding cooling grooves 18; Second connecting pipes 22 are respectively installed in the middle parts of the forming cylinders 13 far from each other. Installation pipes 23 are fixed at the ends of the second connecting pipes 22 far from each other. Second through holes 20 matching the second connecting pipes 22 are respectively opened in the middle parts of the forming cylinders 13 far from each other. The second through holes 20 on the forming cylinders 13 are in a communicating state with the corresponding cooling grooves 18. The second through holes 20 help to connect the cooling grooves 18 on the forming cylinders 13 with the second connecting pipes 22.

[0054] The second connecting block 12 is provided with a matching retaining groove 27 corresponding to the first connecting pipe 21 and the second connecting pipe 22. The retaining groove 27 on the second connecting block 12 helps to position the first connecting pipe 21 and the second connecting pipe 22. The forming cylinders 13 penetrate through the two side surfaces of the second connecting block 12 at the corresponding positions. The second connecting block 12 is provided with a matching retaining hole 26 corresponding to the forming cylinders 13. Sealing gaskets 15 that are matched and adhered are fixed on the surfaces of the forming cylinders 13 near the extruder body 1. The forming cylinders 13 can fix and position the sealing gaskets 15. A baffle 14 is commonly fixed between the surfaces of the forming cylinders 13 away from the sealing gaskets 15. Electric telescopic rods 25 are installed corresponding to the moving disks 24 at both ends of the side surface of the baffle 14 away from the forming cylinders 13.

[0055] The output rods of the electric telescopic rods 25 all face the baffle 14. The output rods of the electric telescopic rods 25 penetrate through the two side surfaces of the baffle 14 at the corresponding positions. One ends of the output rods of the electric telescopic rods 25 near the moving disks 24 are fixedly connected to the corresponding positions on the corresponding moving disks 24. The electric telescopic rods 25 help to drive the moving disks 24 to move. Fixed plates 4 are fixed at both ends of the upper surface of the second mounting plate 3. Rotating rods 6 are rotatably installed in the middle of the fixed plates 4 through bearings. The rotating rods 6 penetrate through the two side surfaces of the middle parts of the corresponding fixed plates 4. A screw rod 7 is commonly fixed between the opposite ends of the rotating rods 6. The rotating rods 6 help to rotate and position the screw rod 7. The screw rod 7 penetrates through the two side surfaces of the middle part of the moving block 8 and is threadedly connected to the middle part of the moving block 8.

[0056] A first connecting block 11 is fixed on the upper surface of the moving block 8. The upper surface of the first connecting block 11 is fixedly connected to the corresponding position on the lower surface of the second connecting block 12. A clamping block 9 is fixed in the middle of the lower surface of the moving block 8. A matching clamping groove 10 is provided on the upper surface of the second mounting plate 3 corresponding to the clamping block 9. The clamping block 9 is located in the clamping groove 10 and is slidably connected to the clamping groove 10 in the horizontal direction. The clamping groove 10 and the clamping block 9 help to position the moving block 8 and facilitate the stable movement of the moving block 8. A rotating motor 5 is installed corresponding to the rotating rod 6 in the middle of the side surface of the fixed plate 4 on one side away from the moving block 8. The output shaft of the rotating motor 5 faces the rotating rod 6 and is fixedly connected to the opposite end on the corresponding rotating rod 6. The rotating motor 5 helps to drive the rotating rod 6 to rotate and facilitates the use of the rotating rod 6.

[0057] Working principle of the present invention: During use, the lower surfaces of the first mounting plate 2 and the second mounting plate 3 are aligned with the positions in the external environment where use is required, such that the lower surfaces of the first mounting plate 2 and the second mounting plate 3 are in a state of matching and fitting with the corresponding external positions. Installing between the first mounting plate 2 and the second mounting plate 3 and their corresponding external positions helps to stably use the first mounting plate 2 and the second mounting plate 3. The first mounting plate 2 can support and position the extruder body 1, facilitating the stable use of the extruder body 1. The second mounting plate 3 can support and position each component assembled on the second mounting plate 3, contributing to the stable use of each component assembled on the second mounting plate 3.

[0058] After mixing the PVC-UH raw materials, stabilizers, fillers, and lubricants in a ratio of 8:0.5:1:0.3, place them into the extruder body 1. Open the extruder body 1. In the open state of the extruder body 1, the extruder body 1 can extrude the mixed PVC-UH raw materials, stabilizers, fillers, and lubricants into the forming cylinder 13, such that the extruded PVC-UH drain pipe raw materials are located outside the corresponding forming rods 16. The PVC-UH drain pipe raw materials will be located between the forming cylinder 13 and the forming rods 16. The forming cylinder 13 and the forming rods 16 contribute to the forming of the PVC-UH drain pipe raw materials.

[0059] Open the cooling rods 17 on the forming rods 16. In the open state of the cooling rods 17, the cooling rods 17 can cool the forming rods 16, such that the cooling rods 17 cool and form the inner side of the PVC-UH drain pipe raw materials to be formed through the forming rods 16. Install the two side mounting pipes 23 respectively between the external pipes for conveying and discharging cooling water. The external pipe for conveying cooling water can transport the cooling water through the mounting pipes 23, the second connecting pipes 22, and the second through holes 20 to the cooling grooves 18 on the forming cylinder 13. The cooling water can cool and form the outer side of the PVC-UH drain pipe raw materials to be formed through the cooling grooves 18 and the forming cylinder 13. The first connecting pipe 21 and the first through hole 19 can communicate with the cooling grooves 18 on the forming cylinder 13 to facilitate the circulation of the cooling water. The cooling water can be discharged through the second through holes 20, the second connecting pipes 22, and the mounting pipes 23 on the side close to the drain pipe. The second connecting block 12 can limit the first connecting pipe 21 and the second connecting pipe 22 through the retaining grooves 27, facilitating the stable use of the first connecting pipe 21 and the second connecting pipe 22. By simultaneously cooling and shaping the inner and outer sides of the formed PVC-UH drain pipe raw materials through the cooling rods 17 and the cooling grooves 18, the efficiency and quality of cooling and shaping are improved.

[0060] After the PVC-UH drainage pipe is cooled and formed, turn on the rotating motor 5 on the fixed plate 4. The fixed plate 4 can fix and limit the rotating motor 5, which helps to stably use the rotating motor 5. When the rotating motor 5 is turned on, the output shaft of the rotating motor 5 can drive the rotating rod 6 to rotate. When the rotating rod 6 rotates, it can drive the screw rod 7 to rotate. The fixed plate 4 can limit the screw rod 7 through the rotating rod 6, which is convenient for stably rotating the screw rod 7. When the screw rod 7 rotates, the moving block 8 threadedly connected to the screw rod 7 will move horizontally. When the moving block 8 moves horizontally, it can drive the clamping block 9 to move in the card slot 10 on the second mounting plate 3. The second mounting plate 3 can limit the moving block 8 through the card slot 10 and the clamping block 9, which helps to stably move the moving block 8.

[0061] When the moving block 8 moves, it can drive the first connecting block 11 to move horizontally. When the first connecting block 11 moves horizontally, it can drive the second connecting block 12 to move horizontally. When the second connecting block 12 moves horizontally, it can drive the forming cylinder 13 to move horizontally through the retaining hole 26, so as to move the empty forming cylinder 13 to correspond to the discharge port on the extruder body 1, and move the forming cylinder 13 containing the cooled and formed PVC-UH drainage pipe away from the discharge port on the extruder body 1. Turn on the electric telescopic rod 25 corresponding to the forming cylinder 13 containing the cooled and formed PVC-UH drainage pipe. The baffle 14 can fix and limit the electric telescopic rod 25, which is convenient for stably using the electric telescopic rod 25. When the electric telescopic rod 25 is turned on, the output rod of the electric telescopic rod 25 can drive the moving disk 24 to move horizontally. When the moving disk 24 moves horizontally, it can drive the formed PVC-UH drainage pipe to move outside the forming cylinder 13 through the forming rod 16, so as to facilitate the removal of the formed PVC-UH drainage pipe.

[0062] During the use process, it helps to discharge the cooled and formed PVC-UH drainage pipe, can conveniently cool and form the PVC-UH drainage pipe, and helps to ensure the working efficiency of processing the PVC-UH drainage pipe.

[0063] Embodiment 2:

[0064] The extruder body 1 adopts a screw extruder in the prior art, which can rely on the pressure and shear force generated by the rotation of the screw to fully plasticize and uniformly mix the material. The extruder body 1 includes an extrusion pipe 101, and the extrusion pipe 101 can be butted with the forming cylinder 13. One end of the extrusion pipe 101 butted with the forming cylinder 13 is provided with a butting disk 102.

[0065] Please refer to Figures 11 - 13, this embodiment is an improvement based on Embodiment 1. The difference is that a discharging mechanism is provided on the side of the forming cylinder 13 close to the extruder main body 1. The discharging mechanism includes a limiting frame, and the limiting frame includes a partition plate 281 and a frame 282. The partition plate 281 is connected to one end of the two forming cylinders 13 where the sealing gasket 15 is provided. The sealing gasket 15 abuts against one side of the partition plate 281. The frame 282 is arranged on the outer edge of the other side of the partition plate 281. The frame 282 and the partition plate 281 can be integrally formed or assembled. The frame 282 is adapted to the docking plate 102. When the rotating motor 5 drives the second connecting block 12 to move horizontally, the docking plate 102 can move relative to the inside of the frame 282. For example, in this embodiment, the docking plate 102 is a disc, and the frame 282 is a waist-shaped hole. Among them, when the docking plate 102 abuts against the two side edges of the frame 282, it forms a docking with the two forming cylinders 13 respectively. The extrusion pipe 101 can extrude the PVC-UH drainage pipe raw material into the forming cylinder 13 for forming. In this way, the accuracy of the docking between the extrusion pipe 101 and the forming cylinder 13 is improved. At the same time, compared with the structure of Embodiment 1, the partition plate 281 can block the outlet end of the forming cylinder 13 during the switching process of the docking between the extrusion pipe 101 and the two forming cylinders 13, that is, the end of the forming cylinder 13 close to the extrusion pipe 101, to prevent the PVC-UH drainage pipe raw material from being extruded.

[0066] Secondly, mounting frames 29 are provided on both sides of the limiting frame. The mounting frames 29 can also be integrally formed with the frame 282. Openings are provided on both side edges of the frame 282. A cutting disc 30 is slidably arranged in the openings. The cutting disc 30 is also slidably arranged in the mounting frame 29. A return spring 31 is arranged between the cutting disc 30 and the mounting frame 29. The cutting disc 30 and the mounting frame 29 are provided with spring positioning posts 32 corresponding to the return spring 31. In this embodiment, a double return spring 31 structure is adopted. Through this setting, under the action of the return spring 31, the cutting disc 30 will block the outlet end of the forming cylinder 13. When the rotating motor 5 drives the second connecting block 12 to move horizontally, the docking plate 102 moves inside the frame 282, which can push the cutting disc 30 to move, and at the same time compress the return spring 31. When the docking plate 102 moves to abut against one side edge of the docking plate 102, that is, it forms a docking with one of the forming cylinders 13. When the docking plate 102 moves in the reverse direction, under the action of the return spring 31, the cutting disc 30 returns to its position to block the outlet end of the forming cylinder 13 again, improving the cooling and forming effect inside the forming cylinder 13.

[0067] Furthermore, a pushing groove 301 adapted thereto is provided on one side of the cutting disc 30 facing the docking disc 102. The bottom wall of the pushing groove 301 is in contact with the partition plate 281, and a cutting edge 302 is provided on the side of the bottom wall of the pushing groove 301 facing the docking disc 102. When moving, the cutting edge 302 can cut off the redundant PVC-UH drainage pipe raw materials at the outlet end of the forming cylinder 13.

[0068] Secondly, in order not to affect the discharging of the PVC-UH drainage pipe after cooling and forming by the electric telescopic rod 25, a discharging hole adapted thereto is provided on the cutting disc 30 corresponding to the outlet end of the forming cylinder 13. A movable plate 33 is hinged at the discharging hole, and a torsion spring is provided so that the movable plate 33 closes the discharging hole under normal conditions. When the electric telescopic rod 25 pushes the PVC-UH drainage pipe to discharge, the movable plate 33 can be opened, and after the discharging is completed, the movable plate 33 closes the discharging hole under the action of the torsion spring. Among them, a sealing structure can also be provided between the movable plate 33 and the discharging hole to improve the cooling and forming effect in the forming cylinder 13.

[0069] Among them, the end face of the movable plate 33 facing the docking disc 102 needs to be flush with the end face of the cutting disc facing the docking disc 102 to avoid affecting the movement of the forming cylinder 13.

[0070] Furthermore, the discharging mechanism further includes a discharging frame 34 and a movable material frame 35 located on both sides of the extruder main body 1. A square installation groove is provided at the discharging hole, and the movable plate 33 is hinged in the installation groove and is hinged toward the side of the first mounting plate 2. The discharging frame 34 is arranged below the discharging side of the forming cylinder 13, and a material receiving plate 341 is provided on the side close to the forming cylinder 13 therein. The side of the material receiving plate 341 away from the forming cylinder 13 is inclined toward the first mounting plate 2, and a material receiving elastic member is provided at the bottom of the material receiving plate 341 and the side wall of the discharging frame 34. The material receiving elastic member can be a compression spring, an elastic pad, etc. Among them, the material receiving plate 341 can also be made of an elastic material, so as to reduce the damage to the PVC-UH drainage pipe during the discharging process.

[0071] Secondly, a discharge plate 361 is hinged to the bottom of the discharge frame 34, and the discharge plate 361 is kept in a state of closing the lower outlet of the discharge frame 34 through a torsion spring. Only when a certain weight of PVC-UH drainage pipes accumulates in the discharge frame 34, the discharge plate 361 is opened. The side of the discharge plate 361 close to the extruder body 1 is hinged. Guide plates 37 are arranged at the positions corresponding to the lower part of the discharge frame 34 on both sides of the extruder body 1. The guide plates 37 are right-angled triangular plates, and the right-angled ends are connected to the extruder body 1 and the first mounting plate 2. It can not only strengthen the connection strength between the extruder body 1 and the first mounting plate 2, but also guide the PVC-UH drainage pipes into the moving material frame 35. The bottom of the moving material frame 35 is provided with moving wheels, and a side door plate 351 is arranged thereon. The side door plate 351 has an open state and a closed state. An embedding groove adapted to the side door plate 351 is arranged between the guide plate 37 and the first mounting plate 2. When the side door plate 351 is in the open state, it can extend into the embedding groove. During normal discharging, first, the side door plate 351 of the moving material frame 35 is extended into the embedding groove to be docked with the first mounting plate 2. When a certain weight of PVC-UH drainage pipes accumulates in the discharge frame 34, the discharge plate 361 is opened, and its non-hinged side abuts against the inclined surface of the guide plate 37. The PVC-UH drainage pipes can roll into the moving material frame 35 along the path formed by the discharge plate 361 and the guide plate 37.

[0072] In summary, after reading this detailed disclosure, those skilled in the art can understand that the foregoing detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated here, those skilled in the art can understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0073] In addition, it should be understood that in the foregoing description of the embodiments of this application, for the purpose of helping to understand a feature and for the purpose of simplifying this application, this application combines various features in a single embodiment, drawing, or its description. However, this does not mean that the combination of these features is necessary. When reading this application, those skilled in the art are entirely possible to mark out some of the devices as separate embodiments for understanding. That is to say, the embodiments in this application can also be understood as the integration of multiple secondary embodiments. And the content of each secondary embodiment is also valid when it is less than all the features of a single foregoing disclosed embodiment.

[0074] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. The vacuum shaping and cooling molding process of PVC-UH drainage pipe is characterized by: The molding process includes the following steps: Step 1: Mix the PVC-UH raw material, stabilizer, filler and lubricant in a ratio of 8:0.5:1:0.3, and extrude the mixed PVC-UH raw material into a cooling molding device through an extruder; Step 2: After the PVC-UH raw material is extruded into the cooling and molding equipment, the PVC-UH raw material is cooled and molded by the cooling and molding equipment to cool and mold the PVC-UH raw material into a PVC-UH drainage pipe; Step 3: After the cooling and molding process of the PVC-UH drainage pipe is completed, the PVC-UH drainage pipe after the cooling and molding process is further discharged. After the PVC-UH drainage pipe is discharged, the processing of the PVC-UH drainage pipe is completed; It also includes a cooling molding device for implementing the molding process, the cooling molding device comprising an extruder body (1), a first mounting plate (2) being mounted on the lower surface of the extruder body (1), a second mounting plate (3) being fixed to the surface of one end of the first mounting plate (2) close to the discharge port of the extruder body (1), a moving block (8) being mounted on the upper surface of the second mounting plate (3) in a horizontally slidable manner, a second connecting block (12) being mounted on the upper surface of the moving block (8), molding cylinders (13) corresponding to the discharge port of the extruder body (1) being mounted in the middle of both ends of the second connecting block (12), the number of molding cylinders (13) being set to two, a moving disk (24) being mounted in the molding cylinder (13) in a horizontally slidable manner, a molding rod (16) being fixed to the middle of the surface of one side of the moving disk (24) close to the extruder body (1), and a refrigeration rod (17) being mounted in the middle of the molding rod (16); A matching sealing pad (15) is fixed to the surface of one end of the molding cylinder (13) close to the extruder body (1), and a baffle (14) is fixed to the surface of one end of the molding cylinder (13) away from the sealing pad (15), and electric telescopic rods (25) are installed at both ends of the surface of the baffle (14) away from the molding cylinder (13) corresponding to the movable disk (24); When the second connecting block (12) moves, it can drive the forming cylinder (13) to move, so as to move the empty forming cylinder (13) to correspond to the discharge port on the extruder body (1), and move the forming cylinder (13) loaded with the cooled and formed PVC-UH drainage pipe to be separated from the discharge port on the extruder body (1); The output rod of the electric telescopic rod (25) can drive the movable plate (24) to move in the horizontal direction, and when the movable plate (24) moves in the horizontal direction, it can drive the formed PVC-UH drainage pipe to move to the outside of the forming cylinder (13) through the forming rod (16); A discharge mechanism is provided on one side of the forming cylinder (13) close to the extruder body (1), the discharge mechanism comprising a limiting frame, the limiting frame comprising a partition (281) and a frame (282), the partition (281) being connected to one end of the two forming cylinders (13) provided with a sealing gasket (15), the sealing gasket (15) being in contact with one side of the partition (281), and the frame (282) being provided on the outer edge of the other side of the partition (281); The extruder body (1) comprises an extrusion tube (101), one end of the extrusion tube (101) being butt-jointed with the forming cylinder (13) is provided with a butt-jointed plate (102), and when the second connecting block (12) moves, the butt-jointed plate (102) can move within the frame (282); Mounting frames (29) are provided on both sides of the limiting frame, openings are provided on both sides of the frame (282), a cutting disc (30) is slidably provided in the opening, the cutting disc (30) is slidably provided in the mounting frame (29), a return spring (31) is provided between the cutting disc (30) and the mounting frame (29), a push groove (301) matching with the docking disc (102) is provided on the side of the cutting disc (30) facing the docking disc (102), the bottom wall of the push groove (301) is in contact with the partition (281), and a cutting edge (302) is provided on the side of the bottom wall of the push groove (301) facing the docking disc (102); The cutting disc (30) will cover the outlet end of the forming cylinder (13); The cut-off disc (30) is provided with a discharge hole corresponding to the outlet end of the forming cylinder (13), and a movable plate (33) is hinged at the discharge hole. A torsion spring is provided so that the movable plate (33) closes the discharge hole in a normal state, and when the electric telescopic rod (25) pushes the PVC-UH drainage pipe to discharge, the movable plate (33) can be opened.

2. The vacuum shaping and cooling molding process for PVC-UH drainage pipes according to claim 1 is characterized in that: In the cooling molding device, a cooling groove (18) is provided in the middle of the molding cylinder (13), a first connecting pipe (21) is installed between the middle parts of the molding cylinder (13) on the adjacent side, and a matching first through hole (19) is provided in the middle part of the molding cylinder (13) on the adjacent side corresponding to the inner ring surface of the first connecting pipe (21), and the first through holes (19) on the molding cylinder (13) are connected to the corresponding cooling grooves (18).

3. The vacuum shaping and cooling forming process for PVC-UH drainage pipes according to claim 2 is characterized in that: In the cooling molding device, a second connecting tube (22) is installed in the middle of the side away from the molding tube (13), a mounting tube (23) is fixed to the end away from the second connecting tube (22), and a matching second through hole (20) is opened in the middle of the side away from the molding tube (13) corresponding to the second connecting tube (22), and the second through holes (20) on the molding tube (13) are in a state of communication with the corresponding cooling grooves (18).

4. The vacuum shaping and cooling forming process for PVC-UH drainage pipes according to claim 3 is characterized in that: In the cooling molding device, matching retention grooves (27) are provided on the second connecting block (12) corresponding to the first connecting tube (21) and the second connecting tube (22), the molding tube (13) penetrates both side surfaces of corresponding positions on the second connecting block (12), and matching retention holes (26) are provided on the second connecting block (12) corresponding to the molding tube (13).

5. The vacuum shaping and cooling forming process for PVC-UH drainage pipes according to claim 4 is characterized in that: In the cooling and forming equipment, the output rods of the electric telescopic rod (25) are all facing the baffle (14), the output rods of the electric telescopic rod (25) are all penetrating the two side surfaces of the corresponding positions on the baffle (14), and the ends of the output rods of the electric telescopic rod (25) close to the movable plate (24) are fixedly connected to the corresponding positions on the corresponding movable plate (24).

6. The vacuum shaping and cooling forming process for PVC-UH drainage pipes according to claim 5 is characterized in that: In the cooling molding device, a fixed plate (4) is fixed at both ends of the upper surface of the second mounting plate (3), a rotating rod (6) is rotatably mounted on the middle of the fixed plate (4) via a bearing, the rotating rod (6) passes through both side surfaces of the middle of the corresponding fixed plate (4), a screw rod (7) is fixed between the opposite ends of the rotating rod (6), the screw rod (7) passes through both side surfaces of the middle of the moving block (8) and is threadedly connected to the middle of the moving block (8).

7. The vacuum shaping and cooling forming process for PVC-UH drainage pipes according to claim 6 is characterized in that: In the cooling and forming equipment, a first connecting block (11) is fixed on the upper surface of the moving block (8), the upper surface of the first connecting block (11) is fixedly connected to the corresponding position of the lower surface of the second connecting block (12), a clamping block (9) is fixed in the middle of the lower surface of the moving block (8), a matching clamping groove (10) is opened in the middle of the upper surface of the second mounting plate (3) corresponding to the clamping block (9), and the clamping block (9) is located in the clamping groove (10) and is slidably connected with the clamping groove (10) in the horizontal direction.

8. The vacuum shaping and cooling forming process for PVC-UH drainage pipes according to claim 7 is characterized in that: In the cooling and forming equipment, a rotating motor (5) is installed on the corresponding rotating rod (6) at the middle of the surface of the fixed plate (4) on one side away from the moving block (8), and the output shaft of the rotating motor (5) faces the rotating rod (6) and is fixedly connected to the opposite end on the corresponding rotating rod (6).

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