Cooling equipment for plastic pipe flaring

Abstract

The utility model discloses cooling equipment for plastic pipe flaring, and relates to the technical field of pipeline flaring equipment, the cooling equipment comprises a flaring die, a first air guide pipe and an outer air outlet pipe, the outer side of the flaring die is fixedly provided with a limiting ring, one end of the flaring die is fixedly provided with a guide seat, and the other end of the guide seat is fixedly provided with a fixed flange; a plurality of heating wire mounting grooves are formed in the flaring die, a connecting flange is fixedly mounted on one side of the fixing flange, and the first air guide pipe is movably mounted in the flaring die. Two first heat insulation tiles are installed in the flaring die in a penetrating mode, a first air guide pipe is installed in the first heat insulation tiles in a penetrating mode, an end cover is installed at one end of the first air guide pipe, and meanwhile an outer air outlet pipe is further arranged on the periphery of the end cover in cooperation with a connecting flange and a second air guide pipe. Therefore, air cooling treatment is rapidly conducted on the flaring end of the pipeline inside and outside the pipeline, and the pipeline flaring device can adapt to pipelines with different flaring requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline expansion equipment, in particular to a cooling device for expanding a plastic pipe. Background Art

[0002] Before using some plastic pipes, it is necessary to expand the port on one side of the pipe to meet the actual needs of connecting accessories, additional fixings, etc. In the process of expanding the plastic pipe, a expanding mold with a heating function is generally used, so that the plastic pipe can be heated and softened, and the diameter of one or both ends of the plastic pipe can be increased;

[0003] Plastic materials soften and deform when heated. When a plastic pipe is heated to a certain temperature, it may bend, twist, and so on. Especially after heating and expanding, the pipe is partially heated. If the temperature is not reduced in time, the deformation of this part may be more obvious, thus affecting the overall shape and use effect of the pipe. Therefore, the existing Chinese utility model patent disclosed by announcement number CN215550912U: a plastic pipe expanding machine, the application positioning clamping structure is provided with a cooling and shaping structure at one end, and a stamping expanding structure is provided on one side of the cooling and shaping structure. One end of the stamping expanding structure is extended into the pipe, and the pipe is heated so that the expanded part is heated to a thermoplastic state, and the stamping expanding structure is controlled to further extend into the expanded mouth of the pipe, and the expanded position is squeezed. After squeezing, it is quickly The cooling and shaping structure is quickly started, thereby realizing rapid cooling and shaping of the flared position. Since the application realizes cooling of the flared end of the pipe by injecting circulating cooling water into the fixed mold cavity and the movable mold cavity, when the pipe is expanded in large quantities, the cooling water in the cooling water tank will heat up rapidly, and the cooling water tank with a smaller volume cannot provide cooling water with a lower temperature for the fixed mold cavity and the movable mold cavity, thereby affecting the cooling effect of the flared end of the pipe. If the volume of the cooling water tank is increased, the footprint of the entire production equipment will increase. In addition, since the flared sizes of pipes of different diameters are different, the water cooling component in the application can only be used for fitting cooling and cooling of pipes of a single flared size, and cannot be quickly adjusted for pipes of different diameters. Utility Model Content

[0004] The utility model aims to provide a cooling device for expanding a plastic pipe, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A cooling device for expanding a plastic tube comprises a expanding mold, a first air duct and an outgoing air duct, wherein a limiting ring is fixedly installed on the outer side of the expanding mold, a guide seat is fixedly installed on one end of the expanding mold, and a fixed flange is fixedly installed on the other end of the guide seat, a plurality of heating wire installation grooves are provided in the expanding mold, a connecting flange is fixedly installed on one side of the fixed flange, and the first air duct is movably installed in the expanding mold, while the outgoing air duct is movably installed at one end of the expanding mold and is located at the outer periphery of the first air duct.

[0007] As a further preferred embodiment of the present invention, a limiting groove is provided at the center of one end of the expanding die.

[0008] As a further preferred embodiment of the utility model, two first thermal insulation tiles are installed in the expanding mold, and one end of the two first thermal insulation tiles is fixed with a limit block, and the limit block is clamped in the limit groove. The setting of the first thermal insulation tile can prevent the heat of the expanding mold from being conducted to the first air duct.

[0009] As a further preferred embodiment of the present invention, an end cover is fixedly installed at one end of the first air duct, and the end cover is obliquely provided with a first air outlet relative to one end of the expansion mold, and the outgoing air duct is inserted and installed between the two first insulation tiles.

[0010] As a further preferred embodiment of the present invention, a side ring is fixedly installed on the inner side of the outgoing air duct, and the side ring is also provided with an oblique second air outlet at one end relative to the expanding mold, and a second air duct is fixedly installed on the outer side of the outgoing air duct, and the second air duct located above the expanding mold is interspersed with a second insulation tile, and the second air duct extends from one end of the second air duct away from the outgoing air duct to one end of the first air duct and is fixedly connected to the first air duct via a three-way joint, and the end of the three-way joint opposite to the second air duct is fixedly connected with a connecting pipe, and one end of the connecting pipe is connected to an external air pump, and through the arrangement of the first air duct, the end cover, the outgoing air duct and the second air duct, the expanded portion of the pipe can be cooled by air in both directions from the inside and the outside of the pipe after the pipe is expanded.

[0011] As a further preferred solution of the utility model, the connecting flange is fixedly installed with two fixing seats on one side of the fixed flange, a slot is provided in the fixing seat, the connecting flange and the fixed flange are fixedly connected by bolts, and the second air duct and the connecting pipe are respectively clamped in the corresponding slots.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a cooling device for expanding a plastic pipe, in which two first heat-insulating tiles are inserted and installed in the expanding mold, and a first air duct is inserted and installed in the first heat-insulating tile, and an end cover is installed at one end of the first air duct. At the same time, an outgoing air duct is arranged at the outer position of the end cover in cooperation with the connecting flange and the second air duct. After the expanding mold expands the pipe, the expanded end of the pipe can be quickly cooled by air inside and outside the pipe, and the pipe can be adapted to pipes with different expanding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the expansion die structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the connecting flange structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the first air duct, the second air duct and the outgoing air duct of the utility model;

[0018] Figure 5 This is a schematic diagram of the end cover structure of the utility model.

[0019] In the figure: 1. expansion mold; 2. first air duct; 3. outgoing air duct; 4. limiting ring; 5. first thermal insulation tile; 6. fixing flange; 7. heating wire installation groove; 8. connecting flange; 9. limiting groove; 10. limiting block; 11. fixing seat; 12. slot; 13. end cover; 14. first air outlet; 15. side ring; 16. second air outlet; 17. second air duct; 18. second thermal insulation tile; 19. three-way joint; 20. connecting pipe; 21. guide seat. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 5 As shown, the utility model provides a cooling device for expanding a plastic tube, comprising a expanding mold 1, a first air duct 2 and an outgoing air duct 3, a limiting ring 4 is fixedly installed on the outer side of the expanding mold 1, a guide seat 21 is fixedly installed on one end of the expanding mold 1, and a fixed flange 6 is fixedly installed on the other end of the guide seat 21, a plurality of heating wire installation grooves 7 are opened in the expanding mold 1, a connecting flange 8 is fixedly installed on one side of the fixed flange 6, and the first air duct 2 is movably installed in the expanding mold 1, and the outgoing air duct 3 is movably installed at one end of the expanding mold 1 and is located at the outer periphery of the first air duct 2.

[0022] like Figure 1-Figure 2 As shown, a limiting groove 9 is provided at the center of one end of the expanding mold 1, and two first heat-insulating tiles 5 are inserted and installed in the expanding mold 1. Limiting blocks 10 are fixedly installed at one end of the two first heat-insulating tiles 5, and the limiting blocks 10 are clamped in the limiting groove 9. The arrangement of the first heat-insulating tiles 5 can prevent the heat of the expanding mold 1 from being transferred to the first air duct 2.

[0023] like Figure 2 , Figure 4-Figure 5 As shown, an end cover 13 is fixedly installed at one end of the first air duct 2, and a first air outlet 14 is obliquely opened on the end cover 13 relative to one end of the expanding mold 1. The outgoing air duct 3 is inserted and installed between the two first heat-insulating tiles 5. A side ring 15 is fixedly installed on the inner side of the outgoing air duct 3, and an oblique second air outlet 16 is also opened on the side ring 15 relative to one end of the expanding mold 1. A second air duct 17 is fixedly installed on the outer side of the outgoing air duct 3. The second air duct 17 is located above the expanding mold 1 and is inserted and installed with a second Insulation tile 18, one end of the second air duct 17 away from the outgoing air duct 3 extends to one end of the first air duct 2 and is fixedly connected to the first air duct 2 through a three-way joint 19, and the end of the three-way joint 19 away from the second air duct 17 is fixedly connected with a connecting pipe 20, and one end of the connecting pipe 20 is connected to an external air pump. Through the arrangement of the first air duct 2, the end cover 13, the outgoing air duct 3, and the second air duct 17, after the pipeline is expanded, the expanded portion of the pipeline can be cooled by air from both inside and outside the pipeline;

[0024] like Figure 1 , Figure 3 As shown, the connecting flange 8 is fixedly mounted with two fixing seats 11 on one side of the fixing flange 6, a slot 12 is provided in the fixing seat 11, the connecting flange 8 is fixedly connected to the fixing flange 6 by bolts, and the second air duct 17 and the connecting pipe 20 are respectively mounted in the corresponding slots 12.

[0025] It should be noted that the utility model is a cooling device for expanding a plastic pipe. After expanding one end of the pipe through the expanding mold 1, since one end of the expanding mold 1 is inserted and installed in the pipe, and the expanding mold 1 drives the end cover 13 to be inserted and installed in the pipe synchronously through the first air duct 2, at the same time, the expanding mold 1 also cooperates with the connecting flange 8 and the second air duct 17 to insert the outgoing air duct 3 into the outside of the pipe. Then, the expanding mold 1 starts to heat and expand one end of the expanding mold 1. After the expansion of one end of the pipe is completed, since the heating end of the expanding mold 1 is at a certain distance from the end cover 13 and the outgoing air duct 3, When the expanding mold 1 is pulled out of the pipe, at this time, the external air pump delivers cooling air into the three-way joint 19 through the connecting pipe 20. At the same time, the three-way joint 19 diverts the cooling air to the first air duct 2 and the second air duct 17, and makes the cooling air blown out through the first air outlet 14 at one end of the end cover 13, so as to cool the expanded end of the pipe from the inside of the pipe. At the same time, the cooling air in the second air duct 17 is blown obliquely to the outside of the pipe through the outgoing air duct 3 and the side ring 15 through the second air outlet 16, so that the end cover 13 and the outgoing air duct 3 cooperate with the moving expanding mold 1 to cool the expanded part of the pipe.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cooling device for expanding a plastic pipe, characterized in that: The invention comprises a flaring die (1), a first air duct (2) and an outgoing air duct (3); a limiting ring (4) is fixedly installed on the outer side of the flaring die (1); a guide seat (21) is fixedly installed on one end of the flaring die (1); a fixing flange (6) is fixedly installed on the other end of the guide seat (21); a plurality of heating wire installation grooves (7) are provided in the flaring die (1); a connecting flange (8) is fixedly installed on one side of the fixing flange (6); the first air duct (2) is movably installed in the flaring die (1), and the outgoing air duct (3) is movably installed at one end of the flaring die (1) and is located at the outer periphery of the first air duct (2).

2. A cooling device for expanding a plastic pipe according to claim 1, characterized in that: A limiting groove (9) is provided at the center of one end of the expanding die (1).

3. A cooling device for expanding a plastic pipe according to claim 2, characterized in that: Two first heat-insulating tiles (5) are inserted and installed in the expansion mold (1), and a limiting block (10) is fixedly installed at one end of each of the two first heat-insulating tiles (5), and the limiting block (10) is clamped in the limiting groove (9).

4. A cooling device for expanding a plastic pipe according to claim 3, characterized in that: An end cover (13) is fixedly mounted on one end of the first air guide pipe (2), and a first air outlet (14) is obliquely opened on the end cover (13) relative to one end of the expansion mold (1), and the outgoing air pipe (3) is installed between the two first heat insulation tiles (5).

5. The cooling device for expanding a plastic pipe according to claim 1, characterized in that: A side ring (15) is fixedly installed on the inner side of the outgoing air duct (3), and an oblique second air outlet (16) is also opened at one end of the side ring (15) relative to the expanding mold (1). A second air guide duct (17) is fixedly installed on the outer side of the outgoing air duct (3). The second air guide duct (17) is located above the expanding mold (1) and is interspersed with a second heat insulation tile (18). The end of the second air guide duct (17) away from the outgoing air duct (3) extends to one end of the first air guide duct (2) and is fixedly connected to the first air guide duct (2) via a three-way joint (19). The end of the three-way joint (19) opposite to the second air guide duct (17) is fixedly connected to a connecting pipe (20), and one end of the connecting pipe (20) is connected to an external air pump.

6. A cooling device for expanding a plastic pipe according to claim 5, characterized in that: Two fixing seats (11) are fixedly mounted on one side of the connecting flange (8) relative to the fixing flange (6); a clamping groove (12) is provided in the fixing seat (11); the connecting flange (8) and the fixing flange (6) are fixedly connected by bolts, and the second air guide pipe (17) and the connecting pipe (20) are respectively clamped in the corresponding clamping grooves (12).

Images