Double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end

Abstract

A dual water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end arranged on a mounting base for mounting the molding tool, the molding tool comprising a plurality of main pipe modules and expansion modules, characterized in that: a mounting bracket is attached to the uppermost area of the mounting base, wherein the double water channel cooling circuit system comprises an expansion cooling water channel for cooling the expansion modules and a main pipe cooling water channel for cooling the main pipe modules, wherein the main pipe cooling water channel comprises a main module total water inlet and return pipe assembly, a drag chain main module water inlet and return pipe assembly, an annular total water inlet and return pipe assembly, and a main pipe branch water inlet and return pipe assembly fixedly connected to each of the main pipe modules; wherein the annular total water supply and return pipe assembly is arranged externally around the mounting bracket, wherein the annular total water supply and return pipe assembly is arranged parallel to an annular drive chain, wherein the annular drive chain and the annular total water supply and return pipe assembly are fixedly connected to a first water distributor and a plurality of second water distributors, wherein one end of the drag chain main module water supply and return pipe assembly is fixedly connected to the main module total water supply and return pipe assembly via a first rotary connector and the other end is connected to the annular total water supply and return pipe assembly via the first water distributor, wherein the first water distributor and the second water distributors are each fixedly connected to the main pipe secondary water supply and return pipe assembly, wherein the expansion cooling water channel comprises an expansion module overall water inlet and return pipe assembly, a drag chain expansion module water inlet and return pipe assembly, and an expansion module secondary water inlet and return pipe assembly fixedly connected to each of the expansion modules, wherein one end of the drag chain expansion module water inlet and return pipe assembly is fixedly connected to the expansion module overall water inlet and return pipe assembly via a second rotary connector and the other end is connected to the expansion module secondary water inlet and return pipe assembly via a third water distributor, wherein the third water distributor is attached to the annular drive chain, wherein the drag chain main module water inlet and return pipe assembly and the drag chain expansion module water inlet and return pipe assembly are bundled in a drag chain and form a drag chain pipe assembly, wherein the drag chain pipe assembly is located on the mounting bracket, wherein the first rotary connector and the second rotary connector rotate about the same rotation axis, wherein, when the main pipe modules and the expanding modules operate along an annular rail on the mounting base, the annular total water inlet and return pipe assembly and the annular drive chain move synchronously with the main pipe modules and the expanding modules, and the drag chain pipe assembly rotates around the rotation axis and moves on the mounting bracket.

Description

TECHNICAL FIELD

[0001] The present utility model relates to plants for producing plastic corrugated pipes, in particular to a double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end. STATE OF THE ART

[0002] In recent years, with the development of double-wall corrugated pipes, the problem of leaks at the female and male ends has become increasingly apparent. Some countries and regions have begun to reduce the use of this connection method, which involves connecting a flared end and a male end with a sealing rubber ring. Alternatives such as injection-molded flared ends or welded flared ends are gradually being used, but the implementation costs of these alternatives are significantly higher than those of the female-to-male connection. The main causes of leaks at the female and male ends are the aging of the rubber rings and the deformation of the flared ends, with deformation of the flared ends being the dominant factor.The plan was to increase the rigidity of the flared ends through an optimized flared end structure, effectively improving the deformation problem of the flared ends and providing customers with suitable flared ends that fully meet standard requirements and are more reliable. For this purpose, the concept of "ultra-strong flared end" was proposed. An ultra-strong flared end means that the wall thickness of the flared end portion of a pipe must reach a certain value. Generally, the thickness of a flared end should be at least twice the wall thickness of a straight pipe. This significantly increases the rigidity of the flared pipe and effectively solves the deformation problem of the flared end.

[0003] To produce corrugated plastic pipes with ultra-strong flared ends, extremely stringent requirements are placed on a forming machine's cooling system. Currently, most forming machines utilize a single-channel circulating cooling system for the molding tools. All modules utilize cooling water from the same channel, and the pipes are cooled by the circulating cooling water within the modules. However, this design has low cooling efficiency because the water temperature and flow rate can only be adjusted to one forming module and one expanding module. This significantly limits the potential for increasing pipe production speeds.

[0004] Furthermore, Chinese utility model patent ZL 2021 2 3042397.5 discloses a water cooling circuit system for plastic corrugated pipe molds. The externally supplied water is divided into two separate, independently circulating cooling water channels via a rotary connector assembly: an expansion cooling water channel for cooling an expansion module and a main pipe cooling water channel for cooling a main pipe module. By separately controlling the temperatures of the main pipe cooling water channel and the expansion cooling water channel, the temperatures of the corresponding main pipe module and expansion module can be controlled. However, the expansion cooling water channel and the main pipe cooling water channel must still share a four-way connector.This results in the water temperatures of the two channels at the four-way connector interfering with each other, making it difficult to regulate water temperature and flow rates. Furthermore, the integrated four-way connector is less flexible due to its large size, has higher operating resistance, and is not suitable for high-speed operation.

[0005] In summary, the existing cooling concept can no longer meet the cooling requirements of molds for ultra-strong flared ends. Continued use would significantly reduce production speed, increase cooling times, and reduce production efficiency. CONTENT OF THE PRESENT UTILITY MODEL

[0006] The present utility model is based on the object of providing a dual water-channel cooling circuit system for a molding die of a plastic corrugated pipe with an ultra-strong flared end. A circulating cooling water channel for cooling the expansion modules and a circulating cooling water channel for cooling the main pipe modules are provided separately. The two circulating cooling water channels do not influence each other. The flow rate and temperature of the water flowing to each main pipe module are controlled separately, and the flow rate and temperature of the water flowing to each expansion module are controlled separately. This allows the produced plastic corrugated pipes with ultra-strong flared ends to have high strength, a good appearance, and be manufactured at a high production speed.

[0007] According to the present utility model, the problem is solved by the following technical solution: A dual water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end arranged on a mounting base for mounting the molding tool, the molding tool comprising a plurality of main pipe modules and expansion modules, characterized in that: a mounting bracket is attached to the uppermost area of the mounting base, wherein the double water channel cooling circuit system comprises an expansion cooling water channel for cooling the expansion modules and a main pipe cooling water channel for cooling the main pipe modules, wherein the main pipe cooling water channel comprises a main module total water inlet and return pipe assembly, a drag chain main module water inlet and return pipe assembly, an annular total water inlet and return pipe assembly, and a main pipe branch water inlet and return pipe assembly fixedly connected to each of the main pipe modules; wherein the annular total water supply and return pipe assembly is arranged externally around the mounting bracket, wherein the annular total water supply and return pipe assembly is arranged parallel to an annular drive chain, wherein the annular drive chain and the annular total water supply and return pipe assembly are fixedly connected to a first water distributor and a plurality of second water distributors, wherein one end of the drag chain main module water supply and return pipe assembly is fixedly connected to the main module total water supply and return pipe assembly via a first rotary connector and the other end is connected to the annular total water supply and return pipe assembly via the first water distributor, wherein the first water distributor and the second water distributors are each fixedly connected to the main pipe secondary water supply and return pipe assembly, wherein the expansion cooling water channel comprises an expansion module overall water inlet and return pipe assembly, a drag chain expansion module water inlet and return pipe assembly, and an expansion module secondary water inlet and return pipe assembly fixedly connected to each of the expansion modules, wherein one end of the drag chain expansion module water inlet and return pipe assembly is fixedly connected to the expansion module overall water inlet and return pipe assembly via a second rotary connector and the other end is connected to the expansion module secondary water inlet and return pipe assembly via a third water distributor, wherein the third water distributor is attached to the annular drive chain, wherein the drag chain main module water inlet and return pipe assembly and the drag chain expansion module water inlet and return pipe assembly are bundled in a drag chain and form a drag chain pipe assembly, wherein the drag chain pipe assembly is located on the mounting bracket, wherein the first rotary connector and the second rotary connector rotate about the same rotation axis, wherein, when the main pipe modules and the expanding modules operate along an annular rail on the mounting base, the annular total water inlet and return pipe assembly and the annular drive chain move synchronously with the main pipe modules and the expanding modules, and the drag chain pipe assembly rotates around the rotation axis and moves on the mounting bracket.

[0008] Preferably, the expansion module total water inlet and return pipe assembly comprises an expansion module total water inlet pipe and an expansion module total water return pipe, wherein the drag chain expansion module water inlet and return pipe assembly comprises a drag chain expansion module water inlet pipe and a drag chain expansion module water return pipe, wherein the expansion module secondary water inlet and return pipe assembly comprises an expansion module secondary water inlet pipe and an expansion module secondary water return pipe,

[0009] and that the second rotary connector is fixedly connected to the expansion module total water inlet pipe, the expansion module total water return pipe, the drag chain expansion module water inlet and the drag chain expansion module water return pipe, wherein the drag chain expansion module water inlet pipe and the drag chain expansion module water return pipe are connected to the third water distributor, and wherein the third water distributor is connected to the expansion module secondary water inlet pipe and the expansion module secondary water return pipe.

[0010] Preferably, a flow meter is mounted on the expansion module total water inlet pipe.

[0011] Preferably, the double water channel cooling cycle system comprises an expansion water channel mounting support frame comprising a long support column and a cover plate, wherein the expansion module total water inlet pipe and the expansion module total water return pipe are fixed to the long support column by a pipe bracket, and wherein the second rotary connector is fixedly mounted to the lower portion of the cover plate.

[0012] Preferably, the mounting bracket comprises a short support column and a drag chain support disk, wherein the drag chain support disk is attached to the uppermost region of the mounting base by the short support column, and wherein the drag chain tube assembly is located on the drag chain support disk and can move on the drag chain support disk.

[0013] Preferably, the first rotary connector is attached to the uppermost region of the mounting base and extends partially through the drag chain support disk, the first rotary connector being located below the second rotary connector.

[0014] Preferably, the main module total water inlet and return pipe assembly comprises a main module total water inlet pipe and a main module total water return pipe, wherein the drag chain main module water inlet and return pipe assembly comprises a drag chain main module water inlet pipe and a drag chain main module water return pipe, wherein the annular total water inlet and return pipe assembly comprises an annular total water inlet pipe and an annular total water return pipe, wherein the main pipe secondary water inlet and return pipe assembly comprises a main pipe secondary water inlet pipe and a main pipe secondary water return pipe; wherein the annular total water supply pipe and the annular total water return pipe are arranged outside the mounting bracket, wherein the first rotary connector is fixedly connected to the main module total water supply pipe, the main module total water return pipe, the drag chain main module water supply pipe, and the drag chain main module water return pipe, wherein the annular total water supply pipe and the annular total water return pipe are fixedly connected to the plurality of first water distributors and the plurality of second water distributors, wherein the drag chain main module water supply pipe and the drag chain main module water return pipe are connected to the first water distributors, and wherein the first water distributors and the second water distributors are connected to the main pipe secondary water supply pipe and the main pipe secondary water return pipe.

[0015] Preferably, the annular drive chain is located below the annular total water supply pipe and the annular total water return pipe, wherein the first water distributors and the plurality of second water distributors are uniformly attached to the annular total water supply pipe, the annular total water return pipe and the annular drive chain, and wherein a drive device drives the annular drive chain to move synchronously with the main pipe modules and expansion modules.

[0016] Preferably, the drive device comprises a power output shaft, a drive wheel fixedly connected to the power output shaft, a first driven wheel and a second driven wheel, the drive wheel engaging the first driven wheel, the first driven wheel and the second driven wheel being arranged at both ends of the mounting bracket, and the annular drive chain being guided around the first driven wheel and the second driven wheel.

[0017] Preferably, the first rotary connector comprises a mounting base and a rotatable head, wherein the mounting base is provided with a plurality of bolt mounting holes, wherein the rotatable head is rotatably mounted on the mounting base, wherein both the rotatable head and the mounting base are provided with at least two water passage channels, and wherein the first rotary connector and the second rotary connector are structurally identical.

[0018] Compared to the state of the art, the present utility model is characterized by the following advantageous effects: The dual water channel cooling circuit system for a molding die for a plastic corrugated pipe with an ultra-strong flared end according to the present utility model includes an expansion cooling water channel for cooling the expansion modules and a main pipe cooling water channel for cooling the main pipe modules. A first rotary connector is used for the main pipe cooling water channel, while a second rotary connector is used for the expansion cooling water channel. The first and second rotary connectors rotate around the same rotation axis. The expansion cooling water channel and the main pipe cooling water channel do not share a common rotary connector assembly, but operate completely independently and without interference. The water temperature of the main pipe cooling water channel does not affect the water temperature of the expansion cooling water channel, nor does it affect the flow rates of the respective circulating water channels.

[0019] When the main pipe modules and the expansion modules work along the annular rail on the mounting base, the annular total water inlet and return pipe assembly and the annular drive chain move synchronously with the main pipe modules and the expansion modules, while the drag chain pipe assembly rotates around the rotation axis and moves on the mounting bracket.

[0020] In the dual-water-channel cooling circuit system for a molding die of a plastic corrugated pipe with an ultra-strong flared end according to the present utility model, separate circulating cooling water channels are provided for cooling the expansion modules and the main pipe modules, and the two circulating cooling water channels do not interfere with each other. The flow rate and temperature of the water flowing to each main pipe module are separately controlled, and the flow rate and temperature of the water flowing to each expansion module are separately controlled. This enables uniform cooling of the ultra-strong flared end areas, prevents cracking at the flared ends, and simultaneously ensures the production of plastic corrugated pipes with ultra-strong flared ends that have high strength and good appearance and can be manufactured at a high production speed. SHORT DESCRIPTION OF THE DRAWING

[0021] In it show Fig. 1 is a schematic structural view of a double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to the present utility model (with modules in the open state); Fig. 2 a view of Fig. 1 from view direction A (some components are omitted); Fig. 3 a side view of Fig. 1 (only the left platform is shown, while the right platform is omitted); Fig. 4 a schematic representation of an annular total water inlet and return pipe assembly and a water distributor according to Fig. 3; Fig. 5 a partial structural view of Fig. 3 from the viewing direction B (schematic representation of a first rotary connector and a drag chain tube assembly); Fig. 6 is a schematic sectional view of the first rotary connector and a second rotary connector; Fig. 7 a schematic sectional view of Fig. 4 by CC; Fig. 8 a plan view of the double water channel cooling circuit system of the left platform according to Fig. 1. Reference symbol: 1 mounting bracket 2 mounting bases 200 ring-shaped drive chain 101 short support column 102 Drag chain support disc 31 Expansion module total water inlet and return pipe assembly 311 Expansion module - total water inlet pipe 3110 Flowmeter 312 Expansion module total water return pipe 32 Drag chain expansion module water inlet and return pipe assembly 321 Drag chain expansion module water inlet pipe 322 Drag chain expansion module water return pipe 33 Expansion module secondary water inlet and return pipe assembly 331 Expansion module secondary water inlet pipe 332 Expansion module secondary water return pipe 34 Expanding water channel mounting support frame 341 long support column 342 cover plate 1001 power output shaft 1002 drive wheel 1003 first driven wheel 1004 second driven wheel 41 Main module total water inlet and return pipe assembly 411 Main module total water inlet pipe 412 Main module total water return pipe 42 Drag chain main module water inlet and return pipe assembly 421 Drag chain main module water inlet pipe 422 Drag chain main module water return pipe 43 annular total water inlet and return pipe assembly 431 annular total water inlet pipe 432 annular total water return pipe 44 Main pipe secondary water inlet and return pipe assembly 441 Main pipe - secondary water inlet pipe 442 Main pipe - secondary water return pipe 5 first rotary connector 501 mounting base 502 rotating head 6 first water distributor 7 second water distributor 8 second rotary connector 9 third water distributor 200 ring-shaped drive chain; T drag chain; K expansion module; Z main pipe module. DETAILED DESCRIPTION

[0022] The following detailed description of the technical solution of the present utility model is given with reference to the drawings and the concrete embodiments in order to better understand the output, the design and the effect of the present utility model, but this should not be understood as limiting the scope of the appended claims of the present utility model.

[0023] Modules used to produce the straight pipe section of a pipe in a corrugated pipe forming machine are called main pipe modules, while modules used to produce a flared pipe end are called expanding modules. Typically, a corrugated pipe forming machine is equipped with 34 to 36 pairs of main pipe modules and 2 to 4 pairs of expanding modules, depending on the pipe diameter.

[0024] The following explains the complete molding tool kit of a molding machine for a plastic corrugated pipe with an ultra-strong end as an example. The molding machine for a plastic corrugated pipe with an ultra-strong end has a left platform P1 and a right platform P2 arranged symmetrically. Modules on the left platform P1 and the right platform P2 are arranged in pairs accordingly, providing a total of 36 pairs of main pipe modules and two pairs of expansion modules. A dual water channel cooling circuit system for a molding tool for a plastic corrugated pipe with an ultra-strong expanded end is mounted on the left platform and the right platform, respectively.

[0025] As in Fig.As shown in Figures 1 to 8, the dual water channel cooling circuit system for a molding tool for a plastic corrugated pipe with an ultra-strong flared end is arranged on a mounting base 2 for mounting the molding tool. The molding tool comprises a plurality of main pipe modules Z and expansion modules K. A mounting bracket 1 is fixed to the uppermost area of the mounting base 2. The dual water channel cooling circuit system comprises an expansion cooling water channel for cooling the expansion modules K and a main module cooling water channel for cooling the main pipe modules Z.

[0026] The main pipe cooling water channel includes a main module overall water inlet and return pipe assembly 41, a drag chain main module water inlet and return pipe assembly 42, an annular overall water inlet and return pipe assembly 43, and a main pipe secondary water inlet and return pipe assembly 44 fixedly connected to each of the main pipe modules Z.

[0027] The annular total water supply and return pipe assembly 43 is arranged externally around the mounting bracket 1. The annular total water supply and return pipe assembly 43 is arranged parallel to an annular drive chain 200. The annular drive chain 200 and the annular total water supply and return pipe assembly 43 are fixedly connected to a first water distributor 6 and a plurality of second water distributors 7. One end of the drag chain main module water supply and return pipe assembly 42 is fixedly connected to the main module total water supply and return pipe assembly 41 via a first rotary connector 5, and the other end is connected to the annular total water supply and return pipe assembly 43 via the first water distributor. The first water distributor 6 and the second water distributors 7 are each fixedly connected to the main pipe secondary water inlet and return pipe assembly 44.

[0028] In detail, the main module total water inlet and return pipe assembly 41 comprises a main module total water inlet pipe 411 and a main module total water return pipe 412. The drag chain main module water inlet and return pipe assembly 42 comprises a drag chain main module water inlet pipe 421 and a drag chain main module water return pipe 422. The annular total water inlet and return pipe assembly 43 comprises an annular total water inlet pipe 431 and an annular total water return pipe 432. The main pipe secondary water inlet and return pipe assembly 44 comprises a main pipe secondary water inlet pipe 441 and a main pipe secondary water return pipe 442. The annular total water inlet pipe 431 and the annular total water return pipe 432 are arranged outside the mounting bracket. 1 arranged around.The first rotary connector 5 is fixedly connected to the main module total water supply pipe 411, the main module total water return pipe 412, the drag chain main module water supply pipe 421, and the drag chain main module water return pipe 422. The annular total water supply pipe 431 and the annular total water return pipe 432 are fixedly connected to the plurality of first water distributors 6 and the plurality of second water distributors 7. The drag chain main module water supply pipe 421 and the drag chain main module water return pipe 422 are connected to the first water distributors 6. The first water distributors 6 and the second water distributors 7 are connected to the main pipe secondary water supply pipe 441 and the main pipe secondary water return pipe 442.

[0029] The expansion cooling water channel includes an expansion module overall water inlet and return pipe assembly 31, a drag chain expansion module water inlet and return pipe assembly 32, and an expansion module secondary water inlet and return pipe assembly 33 fixedly connected to each of the expansion modules. One end of the drag chain expansion module water inlet and return pipe assembly 32 is fixedly connected to the expansion module overall water inlet and return pipe assembly 31 via a second rotary connector 8, and the other end is connected to the expansion module secondary water inlet and return pipe assembly 33 via a third water distributor 9. The third water distributor 9 is attached to the annular drive chain 200.

[0030] Specifically, the expansion module overall water inlet and return pipe assembly 31 includes an expansion module overall water inlet pipe 311 and an expansion module overall water return pipe 312. The drag chain expansion module water inlet and return pipe assembly 32 includes a drag chain expansion module water inlet pipe 321 and a drag chain expansion module water return pipe 322. The expansion module secondary water inlet and return pipe assembly 33 includes an expansion module secondary water inlet pipe 331 and an expansion module secondary water return pipe 332. The drag chain main module water inlet and return pipe assembly 42 and the drag chain expansion module water inlet and return pipe assembly 32 are bundled into a drag chain T and form a drag chain pipe assembly. The drag chain tube assembly is located on the mounting bracket 1. The first rotary connector 5 and the second rotary connector 8 rotate around the same rotation axis.

[0031] When the main pipe modules Z and the expansion modules K operate along the annular rail on the mounting base 2, the annular total water inlet and return pipe assembly 43 and the annular drive chain 200 move synchronously with the main pipe modules Z and the expansion modules K, while the drag chain pipe assembly rotates around the rotation axis and moves on the mounting bracket 1.

[0032] The second rotary connector 8 is fixedly connected to the expansion module total water inlet pipe 311, the expansion module total water return pipe 312, the drag chain expansion module water inlet 321, and the drag chain expansion module water return pipe 322. The drag chain expansion module water inlet pipe 321 and the drag chain expansion module water return pipe 322 are connected to the third water distributor 9. The third water distributor 9 is connected to the expansion module secondary water inlet pipe 331 and the expansion module secondary water return pipe 332.

[0033] A flowmeter 3110 is mounted on the expansion module's total water inlet pipe 311. It serves to regulate the water flow in the expansion module's total water inlet pipe 311, thereby controlling the flow rate and temperature of the expansion cooling water channel. The expansion cooling water channel for cooling the expansion modules is designed as an independent circulating water channel. In conjunction with the use of a water cooling machine, the flowmeter 3110 mounted on the expansion module's total water inlet pipe 311 ensures a precisely metered cooling water supply with precisely controlled temperature and flow rate.

[0034] The double water channel cooling cycle system includes an expanding water channel mounting support frame 34 which includes a long support column 341 and a cover plate 342.

[0035] The expansion module total water inlet pipe 311 and the expansion module total water return pipe 312 are attached to the long support column 341 by a pipe bracket. The second rotary connector 8 is fixedly mounted on the lower part of the cover plate 342.

[0036] The first rotary connector 5 and the second rotary connector 8 interact to ensure the independent operation of the two circulating water channels, namely the main module cooling water channel for cooling the main modules and the expansion cooling water channel for cooling the expansion modules, without mutual interference. The two circulating water channels enable individual control of the water temperature and flow rate for the main modules and the expansion modules, respectively. This significantly increases the production speed of plastic corrugated pipes with ultra-strong flared ends while simultaneously improving the aesthetic quality of the pipes.

[0037] The first water distributor 6, the second water distributor 7, and the third water distributor basically have the same structure and can be configured as a branch, three-way, or four-way distributor as needed. The bottom of each water distributor is equipped with a double roller structure, which converts the sliding friction at the bottom of each water distributor into rolling friction when the annular drive chain 200 sags, thereby effectively reducing chain transmission resistance.

[0038] In some embodiments, the mounting bracket 1 includes a short support column 101 and a drag chain support disk 102. The drag chain support disk 102 is attached to the uppermost region of the mounting base 2 via the short support column 101. The drag chain tube assembly is located on the drag chain support disk 102 and can move on the drag chain support disk 102.

[0039] The first rotary connector 5 is attached to the uppermost area of the mounting base 2 and partially passes through the drag chain support disk 102. The first rotary connector 5 is located below the second rotary connector 8.

[0040] In some embodiments, the annular drive chain 200 is located below the annular total water supply pipe 431 and the annular total water return pipe 432. The first water distributors 6 and the plurality of second water distributors 7 are uniformly attached to the annular total water supply pipe 431, the annular total water return pipe 432, and the annular drive chain 200. A drive device drives the annular drive chain 200 to move synchronously with the main pipe modules Z and the expansion modules K.

[0041] In some embodiments, the drive device comprises a power output shaft 1001, a drive gear 1002 fixedly connected to the power output shaft 1001, a first driven gear 1003, and a second driven gear 1004. The drive gear 1002 engages with the first driven gear 1003. The first driven gear 1003 and the second driven gear 1004 are arranged at both ends of the mounting bracket 1. The annular drive chain 200 is guided around the first driven gear 1003 and the second driven gear 1004. The drive device drives the annular drive chain 200 to move, whereby the annular drive chain 200 causes the individual circulating water channel to rotate around the respective platform, so that the circulating water channel comprising all modules forms a closed water chamber space.Preferably, the ring-shaped drive chain 200 is designed as a double chain construction, which ensures higher connection strength and more stable operation.

[0042] In some embodiments, the first rotary connector 5 comprises a mounting base 501 and a rotatable head 502. The mounting base 501 is provided with a plurality of bolt mounting holes. The rotatable head 502 is rotatably mounted on the mounting base 501. The rotatable head 502 can rotate 360°. Both the rotatable head 502 and the mounting base 501 are provided with at least two water passage channels. By means of bolts cooperating with the bolt mounting holes of the mounting base 501, the first rotary connector 5 is fastened to the uppermost region of the mounting base 2. The first rotary connector 5 and the second rotary connector 8 are structurally identical. The first rotary connector 5 and the second rotary connector 8 are designed as four-way connectors.

[0043] The cooling water of the main module cooling water channel circulates as follows: Main module total water inlet pipe 411 → First rotary joint 5 → Drag chain main module water inlet pipe 421 → First water distributor 6 → Annular total water inlet pipe 431 → Second water distributor 7 → Main pipe secondary water inlet pipe 441 → Main pipe module Z (with cooling water path provided therein) → Main pipe secondary water return pipe 442 → Second water distributor 7 → Annular total water return pipe 432 → First water distributor 6 → Drag chain main module water return pipe 422 → First rotary joint 5 → Main module total water return pipe 412 → Discharge to the outside.

[0044] The cooling water of the expansion module cooling water channel circulates as follows: Expansion module total water inlet pipe 311 → Second rotary connector 8 → Drag chain expansion module water inlet pipe 321 → Third water distributor 9 → Expansion module secondary water inlet pipe 331 → Expansion module K (with cooling water path provided therein) → Expansion module secondary water return pipe 332 → Third water distributor 9 → Drag chain expansion module water return pipe 322 → Second rotary connector 8 → Expansion module total water return pipe 312.

[0045] The dual water-channel cooling circuit system for a molding die for a plastic corrugated pipe with an ultra-strong flared end according to the present utility model includes an expansion cooling water channel for cooling the expansion modules and a main pipe cooling water channel for cooling the main pipe modules. The expansion cooling water channel and the main pipe cooling water channel are provided separately. The two circulating cooling water channels do not affect each other. The flow and temperature of the water flowing to each main pipe module are controlled separately, and the flow and temperature of the water flowing to each expansion module are controlled separately. This ensures the production of plastic corrugated pipes with ultra-strong flared ends that have high strength and good appearance and can be manufactured at a high production speed.

[0046] The present utility model is not limited to the embodiments described above. All improvements based on the concept, principles, structure, or methods of the present utility model are within the scope of protection of the present utility model.

Claims

[1] Double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end arranged on a mounting base for mounting the molding tool, the molding tool comprising a plurality of main pipe modules and expansion modules, characterized by , that: a mounting bracket is attached to the uppermost area of the mounting base, wherein the double water channel cooling circuit system comprises an expansion cooling water channel for cooling the expansion modules and a main pipe cooling water channel for cooling the main pipe modules, wherein the main pipe cooling water channel comprises a main module total water inlet and return pipe assembly, a drag chain main module water inlet and return pipe assembly, an annular total water inlet and return pipe assembly, and a main pipe branch water inlet and return pipe assembly fixedly connected to each of the main pipe modules; wherein the annular total water supply and return pipe assembly is arranged externally around the mounting bracket, wherein the annular total water supply and return pipe assembly is arranged parallel to an annular drive chain, wherein the annular drive chain and the annular total water supply and return pipe assembly are fixedly connected to a first water distributor and a plurality of second water distributors, wherein one end of the drag chain main module water supply and return pipe assembly is fixedly connected to the main module total water supply and return pipe assembly via a first rotary connector and the other end is connected to the annular total water supply and return pipe assembly via the first water distributor, wherein the first water distributor and the second water distributors are each fixedly connected to the main pipe secondary water supply and return pipe assembly, wherein the expansion cooling water channel comprises an expansion module overall water inlet and return pipe assembly, a drag chain expansion module water inlet and return pipe assembly, and an expansion module secondary water inlet and return pipe assembly fixedly connected to each of the expansion modules, wherein one end of the drag chain expansion module water inlet and return pipe assembly is fixedly connected to the expansion module overall water inlet and return pipe assembly via a second rotary connector and the other end is connected to the expansion module secondary water inlet and return pipe assembly via a third water distributor, wherein the third water distributor is attached to the annular drive chain, wherein the drag chain main module water inlet and return pipe assembly and the drag chain expansion module water inlet and return pipe assembly are bundled in a drag chain and form a drag chain pipe assembly, wherein the drag chain pipe assembly is located on the mounting bracket, wherein the first rotary connector and the second rotary connector rotate about the same rotation axis, wherein, when the main pipe modules and the expanding modules operate along an annular rail on the mounting base, the annular total water inlet and return pipe assembly and the annular drive chain move synchronously with the main pipe modules and the expanding modules, and the drag chain pipe assembly rotates around the rotation axis and moves on the mounting bracket. [2] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 1, characterized bythat: the expansion module total water inlet and return pipe assembly comprises an expansion module total water inlet pipe and an expansion module total water return pipe, wherein the drag chain expansion module water inlet and return pipe assembly comprises a drag chain expansion module water inlet pipe and a drag chain expansion module water return pipe, wherein the expansion module secondary water inlet and return pipe assembly comprises an expansion module secondary water inlet pipe and an expansion module secondary water return pipe, and that the second rotary connector is fixedly connected to the expansion module total water inlet pipe, the expansion module total water return pipe, the drag chain expansion module water inlet and the drag chain expansion module water return pipe, wherein the drag chain expansion module water inlet pipe and the drag chain expansion module water return pipe are connected to the third water distributor, and wherein the third 3 Water distributor is connected to the expansion module secondary water inlet pipe and the expansion module secondary water return pipe. [3] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 2, characterized by that: a flow meter is mounted on the expansion module total water inlet pipe. [4] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 3, characterized by , that: the dual water channel cooling cycle system comprises an expansion water channel mounting support frame including a long support column and a cover plate, wherein the expansion module total water inlet pipe and the expansion module total water return pipe are fixed to the long support column by a pipe bracket, and wherein the second rotary connector is fixedly mounted to the lower portion of the cover plate. [5] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 4, characterized by , that: the mounting bracket comprises a short support column and a drag chain support disk, wherein the drag chain support disk is attached to the uppermost region of the mounting base by the short support column, and wherein the drag chain tube assembly is located on the drag chain support disk and can move on the drag chain support disk. [6] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 5, characterized by , that: the first rotary connector is attached to the uppermost area of the mounting base and passes partially through the drag chain support disk, with the first rotary connector located below the second rotary connector. [7] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 1, characterized bythat: the main module total water inlet and return pipe assembly comprises a main module total water inlet pipe and a main module total water return pipe, wherein the drag chain main module water inlet and return pipe assembly comprises a drag chain main module water inlet pipe and a drag chain main module water return pipe, wherein the annular total water inlet and return pipe assembly comprises an annular total water inlet pipe and an annular total water return pipe, wherein the main pipe secondary water inlet and return pipe assembly comprises a main pipe secondary water inlet pipe and a main pipe secondary water return pipe;wherein the annular total water supply pipe and the annular total water return pipe are arranged externally around the mounting bracket, wherein the first rotary connector is fixedly connected to the main module total water supply pipe, the main module total water return pipe, the drag chain main module water supply pipe, and the drag chain main module water return pipe, wherein the annular total water supply pipe and the annular total water return pipe are fixedly connected to the plurality of first water distributors and the plurality of second water distributors, wherein the drag chain main module water supply pipe and the drag chain main module water return pipe are connected to the first water distributors, and wherein the first water distributors and the second water distributors are connected to the main pipe secondary water supply pipe and the main pipe secondary water return pipe. [8] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 7, characterized by , that: the annular drive chain is located below the annular total water supply pipe and the annular total water return pipe, wherein the first water distributors and the plurality of second water distributors are uniformly attached to the annular total water supply pipe, the annular total water return pipe and the annular drive chain, and wherein a drive device drives the annular drive chain to move synchronously with the main pipe modules and expansion modules. [9] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to claim 8, characterized bythat: the drive device comprises a power output shaft, a drive wheel fixedly connected to the power output shaft, a first driven wheel and a second driven wheel, wherein the drive wheel is engaged with the first driven wheel, wherein the first driven wheel and the second driven wheel are arranged at both ends of the mounting bracket, and wherein the annular drive chain is guided around the first driven wheel and the second driven wheel. [10] A double water channel cooling circuit system for a molding tool of a plastic corrugated pipe with an ultra-strong flared end according to any one of claims 1 to 9, characterized bythat: the first rotary connector comprises a mounting base and a rotatable head, wherein the mounting base is provided with a plurality of bolt mounting holes, wherein the rotatable head is rotatably mounted on the mounting base, wherein both the rotatable head and the mounting base are provided with at least two water passage channels, and wherein the first rotary connector and the second rotary connector are structurally identical.

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