PE corrugated pipe forming machine

Abstract

The utility model discloses a PE corrugated pipe forming machine which comprises a machine frame, a working table is fixedly arranged at the upper end of the machine frame, and mounting frames are fixedly arranged at the front end and the rear end of the upper end of the working table. The mounting plate is arranged between the mounting frame transverse plates at the two ends, the mounting plate is fixedly connected with the mounting frame, a first mold is arranged at the lower end of the mounting plate, and a second mold is arranged at the lower end of the first mold; the cooling cavities are formed in the first mold and the second mold, the number of the cooling cavities is five, the cooling cavities are annularly distributed at equal intervals, the cooling cavities are of a penetrating structure, cooling pipes are arranged in the cooling cavities, and the cooling pipes are of a reciprocating bending structure. And die replacement is not flexible enough.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows forming, in particular to a PE bellows forming machine. Background Technique

[0002] The PE bellows forming device is a complex mechanical system specially designed for continuously and efficiently producing polyethylene (PE) pipes with a corrugated shape. The PE bellows forming device mainly consists of core parts such as an extruder, a corrugation forming module, a cooling system, a traction and cutting device, etc. When making PE bellows, first, the raw material is added from the hopper of the extruder, and after being extruded by the screw and heated and melted by the barrel, it becomes a molten material with a certain temperature and pressure. The molten material is extruded through the die into a continuous tube blank, and the tube blank then enters the corrugation forming module. In the corrugation forming module, the die and the pushing mechanism act together to form continuous corrugations on the tube blank.

[0003] For example, the Chinese patent "A Bellows Forming Machine" with the publication number CN219446101U includes a machine body, two O-shaped tracks arranged on the machine body, and a forming die mechanism arranged on the machine body. A driving mechanism for driving the forming die mechanism to move around the O-shaped track is arranged on the machine body. An oil spraying component is arranged on the machine body, and the oil spraying component faces the forming die mechanism and the O-shaped track. The oil spraying component is communicated with an oil pump. The oil spraying component includes a first oil nozzle and a second oil nozzle both communicated with the oil pump. The first oil nozzle faces the forming die mechanism, and the second oil nozzle faces the O-shaped track.

[0004] Although the above-mentioned prior art can realize the forming of bellows, in actual use, on the one hand, it is difficult to demold the bellows after production. When making the bellows, it needs to enter the mold interior at a high temperature state for processing, resulting in the need for natural cooling before demolding after the bellows are made, thus reducing the production efficiency of the bellows. On the other hand, the mold replacement is not flexible enough. When producing bellows of different diameters, different molds need to be replaced, resulting in the need to adjust the overall structure of the mold when disassembling and assembling the mold, thus increasing the workload of the operator. Therefore, it does not meet the existing requirements, and for this reason, we propose a PE bellows forming machine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a PE bellows forming machine to solve the problems of difficult demolding after the bellows are made and inflexible mold replacement mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A PE bellows forming machine includes a frame, and a workbench is fixedly arranged at the upper end of the frame. Installation frames are fixedly arranged at the front and rear ends of the upper end of the workbench; It also includes:

[0007] An installation plate is arranged between the cross plates of the installation frames at both ends, and the installation plate is fixedly connected to the installation frames. A first mold is arranged at the lower end of the installation plate, and a second mold is arranged at the lower end of the first mold;

[0008] Cooling cavities are arranged inside the first mold and the second mold. There are five cooling cavities which are distributed at equal intervals in a ring shape, and the cooling cavities are of a through structure. Cooling pipes are arranged inside the cooling cavities, and the cooling pipes are of a reciprocally bent structure.

[0009] Preferably, fixing plates are fixedly arranged at the front and rear ends between the installation frames. Motors are fixedly arranged at the front and rear ends on the side of the fixing plates close to the first mold, and fan blades are fixedly arranged on the outer parts of the output shafts of the motors.

[0010] Preferably, a liquid inlet pipe is fixedly arranged at one end of the cooling pipe outside the cooling cavity, and a liquid outlet pipe is fixedly arranged at the other end of the cooling pipe outside the cooling cavity. The liquid outlet pipe and the liquid inlet pipe are both communicated with the cooling pipe.

[0011] Preferably, first hydraulic telescopic devices are fixedly arranged at the front and rear ends of the upper end of the installation plate, and the telescopic ends of the first hydraulic telescopic devices extend below the installation plate. Second hydraulic telescopic devices are fixedly arranged at the front and rear ends of the lower end of the workbench, and the telescopic ends of the second hydraulic telescopic devices extend above the workbench.

[0012] Preferably, limiting plates are fixedly arranged at the lower ends of the telescopic ends of the first hydraulic telescopic devices and at the upper ends of the telescopic ends of the second hydraulic telescopic devices. Chute grooves are arranged inside the limiting plates, and the front ends of the chute grooves are of an open structure.

[0013] Preferably, T-shaped limiting bars are arranged inside the chute grooves. The T-shaped limiting bars are slidably limited in the chute grooves, and one ends of the T-shaped limiting bars extend outside the chute grooves and are respectively fixedly connected to the first mold and the second mold.

[0014] Preferably, threaded holes are arranged inside the limiting plates on both sides of the openings of the chute grooves. Threaded rods are arranged inside the threaded holes, and the threaded rods are threadedly connected to the threaded holes.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The utility model can dissipate heat from the mold through the cooling pipe and the fan blade. When manufacturing the corrugated pipe, at this time, the first mold and the second mold extrude the outside of the pipe to print the pattern on the outside of the pipe. At this time, the heat on the pipe is transferred to the first mold and the second mold. When cooling, first connect the liquid filling pipe with the liquid inlet pipe, and at the same time start the motor. The liquid filling pipe fills the cooling pipe with the coolant through the liquid inlet pipe. At this time, the coolant flows in the reciprocally bent cooling pipe. The heat on the first mold and the second mold is transferred to the coolant with a lower temperature. Finally, the coolant is discharged from the liquid outlet pipe. By absorbing the heat on the first mold and the second mold by the coolant, the temperature on the first mold and the second mold is reduced. The output shaft of the motor drives the fan blade to rotate. When the fan blade rotates, the air flow near it is accelerated and an air current is formed. At this time, the air current blows to the surfaces of the first mold and the second mold. By the air current, the heat dissipation on the first mold and the second mold is accelerated, and the heat dissipation efficiency of the first mold and the second mold is increased, thus accelerating the mold demolding efficiency.

[0017] 2. The utility model can quickly position and fix the mold through the T-shaped limiting strip and the limiting plate. When it is necessary to replace the first mold and the second mold when manufacturing corrugated pipes with different diameters, first rotate the threaded rod, so that the threaded rod moves in the limiting plate through the external thread until the threaded rod disengages from the threaded hole on the limiting plate. At this time, pull the first mold and the second mold, so that the T-shaped limiting strips on the first mold and the second mold slide in the sliding groove until the T-shaped limiting strips slide out of the sliding groove. At this time, align the T-shaped limiting strips on the new first mold and the second mold with the opening of the sliding groove and push them into the sliding groove until the T-shaped limiting strips slide to a suitable position. At this time, align the threaded rod with the opening of the threaded hole and rotate it until the threaded rod completely enters the inside of the threaded hole. At this time, the T-shaped limiting strip is clamped and fixed inside the sliding groove by the threaded rod, thus simplifying the mold replacement steps.

[0018] 3. The utility model can prevent the mold from shifting during movement through the first hydraulic telescopic device and the second hydraulic telescopic device. When processing the corrugated pipe, at this time, the corrugated pipe is placed between the first mold and the second mold. At this time, start the first hydraulic telescopic device and the second hydraulic telescopic device, so that while the telescopic end of the first hydraulic telescopic device extends, it drives the first mold to move downward until the first mold reaches a suitable position. At the same time, start the second hydraulic telescopic device. By the extension of the telescopic end of the second hydraulic telescopic device, the second mold is driven to move upward until the second mold moves to a suitable position. At this time, the upper end of the second mold fits with the lower end of the first mold, reducing the gap between the first mold and the second mold and at the same time avoiding the situation that the first mold and the second mold shift during movement, thereby improving the manufacturing precision of the corrugated pipe. Description of the Drawings

[0019] Figure 1 Front view of the internal structure of the present utility model;

[0020] Figure 2 Side view of the internal structure of the present utility model;

[0021] Figure 3 Schematic diagram of the mold structure of the present utility model;

[0022] Figure 4 For the present utility model Figure 2 Partial enlarged view of area A.

[0023] In the figure: 1, frame; 2, workbench; 3, mounting frame; 4, mounting plate; 5, fixing plate; 6, first hydraulic telescopic device; 7, limiting plate; 8, sliding groove; 9, T-shaped limiting strip; 10, first mold; 11, cooling pipe; 12, liquid inlet pipe; 13, second mold; 14, threaded rod; 15, motor; 16, fan blade; 17, second hydraulic telescopic device; 18, cooling cavity; 19, liquid outlet pipe; 20, threaded hole. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a PE corrugated pipe forming machine, including a frame 1, a workbench 2 is fixedly arranged at the upper end of the frame 1, and mounting frames 3 are fixedly arranged at the front and rear ends of the upper end of the workbench 2; further including:

[0026] A mounting plate 4, which is arranged between the cross plates of the two mounting frames 3, and the mounting plate 4 is fixedly connected to the mounting frame 3. A first mold 10 is arranged at the lower end of the mounting plate 4, and a second mold 13 is arranged at the lower end of the first mold 10;

[0027] A cooling cavity 18, which is arranged inside the first mold 10 and the second mold 13. There are five cooling cavities 18 and they are distributed at equal intervals in a ring shape, and the cooling cavity 18 is a through structure. A cooling pipe 11 is arranged inside the cooling cavity 18, and the cooling pipe 11 is a reciprocally bent structure.

[0028] During use, when the corrugated tube is being made, the first mold 10 and the second mold 13 extrude the outside of the tube so that the texture is printed on the outside of the tube. At this time, the heat on the tube is transferred to the first mold 10 and the second mold 13. When cooling, the filling tube is first connected to the liquid inlet tube 12, and the motor 15 is turned on at the same time. The filling tube fills the coolant into the cooling tube 11 through the liquid inlet tube 12. At this time, the coolant flows in the reciprocating cooling tube 11, and the heat on the first mold 10 and the second mold 13 is transferred to the coolant with lower temperature. The coolant is finally discharged from the liquid outlet pipe 19. The coolant absorbs the heat on the first mold 10 and the second mold 13, thereby reducing the temperature on the first mold 10 and the second mold 13. The fan blade 16 is driven to rotate by the output shaft of the motor 15. When the fan blade 16 rotates, the air flow near it is accelerated and an airflow is formed. At this time, the airflow blows to the surface of the first mold 10 and the second mold 13, and the heat dissipation on the first mold 10 and the second mold 13 is accelerated by the airflow.

[0029] See also Figure 1 and Figure 2 A fixing plate 5 is fixedly provided at the front and rear ends between the mounting frame 3, a motor 15 is fixedly provided at the front and rear ends of the fixing plate 5 close to the first mold 10, and a fan blade 16 is fixedly provided on the outside of the output shaft of the motor 15, so that the airflow generated by the fan blade 16 can accelerate the heat dissipation on the first mold 10 and the second mold 13.

[0030] See also Figure 2 and Figure 3 A liquid inlet pipe 12 is fixedly provided at one end of the cooling tube 11 located outside the cooling chamber 18, and a liquid outlet pipe 19 is fixedly provided at the other end of the cooling tube 11 located outside the cooling chamber 18. The liquid outlet pipe 19 and the liquid inlet pipe 12 are both connected to the cooling tube 11, so that the coolant can be discharged and injected through the liquid outlet pipe 19 and the liquid inlet pipe 12.

[0031] See also Figure 1 and Figure 2 The front and rear ends of the upper end of the mounting plate 4 are fixedly provided with a first hydraulic telescopic device 6, and the telescopic end of the first hydraulic telescopic device 6 extends to the bottom of the mounting plate 4, and the front and rear ends of the lower end of the workbench 2 are fixedly provided with a second hydraulic telescopic device 17, and the telescopic end of the second hydraulic telescopic device 17 extends to the top of the workbench 2, so that the first mold 10 can be moved by the first hydraulic telescopic device 6, and the second mold 13 can be moved by the second hydraulic telescopic device 17 at the same time.

[0032] See also Figure 1 and Figure 2, a limiting plate 7 is fixedly provided at the lower end of the telescopic end of the first hydraulic telescopic device 6 and the upper end of the telescopic end of the second hydraulic telescopic device 17. A chute 8 is arranged inside the limiting plate 7, and the front end of the chute 8 is of an open structure, facilitating the sliding of the T-shaped limiting strip 9 inside it through the chute 8.

[0033] Please refer to Figure 1 and Figure 3 , a T-shaped limiting strip 9 is arranged inside the chute 8. The T-shaped limiting strip 9 is slidably limited with the chute 8, and one end of the T-shaped limiting strip 9 extends to the outside of the chute 8 and is fixedly connected to the first mold 10 and the second mold 13 respectively, facilitating the rapid positioning of the first mold 10 and the second mold 13 on the limiting plate 7 through the T-shaped limiting strip 9.

[0034] Please refer to Figure 2 and Figure 4 , threaded holes 20 are arranged inside the limiting plate 7 on both sides of the opening of the chute 8. Threaded rods 14 are arranged inside the threaded holes 20, and the threaded rods 14 are threadedly connected with the threaded holes 20, facilitating the fixing of the threaded rods 14 on the limiting plate 7 through the threaded holes 20.

[0035] Working principle: When the first mold 10 and the second mold 13 need to be replaced when manufacturing bellows of different calibers, first rotate the threaded rod 14 so that the threaded rod 14 moves in the limiting plate 7 through the external thread until the threaded rod 14 disengages from the threaded hole 20 on the limiting plate 7. At this time, pull the first mold 10 and the second mold 13 so that the T-shaped limiting strips 9 on the first mold 10 and the second mold 13 slide in the chute 8 until the T-shaped limiting strips 9 slide out of the chute 8. At this time, align the T-shaped limiting strips 9 on the new first mold 10 and the second mold 13 with the opening of the chute 8 and push them into the chute 8 until the T-shaped limiting strips 9 slide to a suitable position. At this time, align the threaded rod 14 with the opening of the threaded hole 20 and rotate it until the threaded rod 14 completely enters the inside of the threaded hole 20. At this time, the T-shaped limiting strip 9 is clamped and fixed inside the chute 8 through the threaded rod 14. When processing the bellows, at this time, the bellows is placed between the first mold 10 and the second mold 13. At this time, turn on the first hydraulic telescopic device 6 and the second hydraulic telescopic device 17, so that while the telescopic end of the first hydraulic telescopic device 6 extends, it drives the first mold 10 to move downward until the first mold 10 reaches a suitable position. At the same time, turn on the second hydraulic telescopic device 17, and drive the second mold 13 to move upward through the extension of the telescopic end of the second hydraulic telescopic device 17 until the second mold 13 moves to a suitable position. At this time, the upper end of the second mold 13 fits with the lower end of the first mold 10.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A PE corrugated pipe forming machine, comprising a frame (1), a workbench (2) is fixedly arranged at the upper end of the frame (1), and mounting frames (3) are fixedly arranged at the front and rear ends of the upper end of the workbench (2); Features: Also includes: A mounting plate (4) is arranged between the horizontal plates of the mounting frame (3) at both ends, and the mounting plate (4) is fixedly connected to the mounting frame (3); a first mold (10) is arranged at the lower end of the mounting plate (4), and a second mold (13) is arranged at the lower end of the first mold (10); A cooling cavity (18) is arranged inside the first mold (10) and the second mold (13), five cooling cavities (18) are arranged and are equidistantly distributed in a ring shape, and the cooling cavity (18) is a through-type structure. A cooling pipe (11) is arranged inside the cooling cavity (18), and the cooling pipe (11) is a reciprocating bending structure.

2. A PE corrugated pipe forming machine according to claim 1, characterized in that: A fixing plate (5) is fixedly arranged at the front and rear ends between the mounting frames (3), a motor (15) is fixedly arranged at the front and rear ends of the fixing plate (5) close to the first mold (10), and a fan blade (16) is fixedly arranged outside the output shaft of the motor (15).

3. A PE corrugated pipe forming machine according to claim 2, characterized in that: A liquid inlet pipe (12) is fixedly provided at one end of the cooling pipe (11) located outside the cooling chamber (18), and a liquid outlet pipe (19) is fixedly provided at the other end of the cooling pipe (11) located outside the cooling chamber (18), and both the liquid outlet pipe (19) and the liquid inlet pipe (12) are in communication with the cooling pipe (11).

4. A PE corrugated pipe forming machine according to claim 3, characterized in that: A first hydraulic telescopic device (6) is fixedly provided at the front and rear ends of the upper end of the mounting plate (4), and the telescopic end of the first hydraulic telescopic device (6) extends to the bottom of the mounting plate (4); a second hydraulic telescopic device (17) is fixedly provided at the front and rear ends of the lower end of the workbench (2), and the telescopic end of the second hydraulic telescopic device (17) extends to the top of the workbench (2).

5. A PE corrugated pipe forming machine according to claim 4, characterized in that: A limit plate (7) is fixedly provided at the lower end of the telescopic end of the first hydraulic telescopic device (6) and the upper end of the telescopic end of the second hydraulic telescopic device (17), a slide groove (8) is provided inside the limit plate (7), and the front end of the slide groove (8) is an open structure.

6. A PE corrugated pipe forming machine according to claim 5, characterized in that: A T-shaped limit strip (9) is arranged inside the slide groove (8), and the T-shaped limit strip (9) and the slide groove (8) are slidably limited, and one end of the T-shaped limit strip (9) extends to the outside of the slide groove (8) and is fixedly connected to the first mold (10) and the second mold (13) respectively.

7. A PE corrugated pipe forming machine according to claim 6, characterized in that: The limiting plate (7) is provided with threaded holes (20) at both sides of the opening of the slide groove (8), and a threaded rod (14) is provided inside the threaded hole (20), and the threaded rod (14) is connected to the threaded hole (20) by threads.

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