Large-diameter water supply and drainage pipe extrusion auxiliary shaping device

Abstract

This invention relates to the field of pipe processing technology, specifically to an auxiliary shaping device for extruding large-diameter water supply and drainage pipes. It includes two sets of mirror-symmetrically arranged forming modules, two mirror-symmetrically arranged flaring molds, and two sets of mirror-symmetrically arranged switching mechanisms. Each forming module includes N forming molds connected end-to-end. When the two forming modules rotate synchronously in opposite directions, the aligned forming mold receives material at a preset temperature and forms a pipe shape through continuous mold closing and opening. The radius of the flaring surface of the flaring mold is larger than the radius of the forming surface of the forming mold. The switching mechanisms replace two of the forming molds in the two forming modules with the two flaring molds. Thus, when the two forming modules rotate synchronously in opposite directions, the two flaring molds can close and open to flare the pipe. This allows for control of the flaring position of the pipe according to the length requirements of different pipes, improving the efficiency of pipe processing and flaring.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and in particular to an auxiliary shaping device for extruding large-diameter water supply and drainage pipes. Background Technology

[0002] In recent years, the rapid urbanization in my country has not only led to the continuous expansion of municipal construction, but also put forward higher requirements for the standards of urban water pollution control. As an important urban infrastructure, the drainage system plays an increasingly important role in ensuring the normal operation of the city and the safe use of urban water. As an important component of the drainage system, drainage pipes are also constantly being updated and replaced.

[0003] Drainage pipes can be classified into plain pipes and corrugated pipes according to their shape. Corrugated pipes are widely used in municipal engineering, construction engineering, electrical and telecommunications engineering, and can be used as drainage pipes, sewage pipes, rainwater pipes for buildings, and protective pipes for various power cables. In the production process of corrugated pipes, in order to enable direct and quick connection between corrugated pipes, it is generally necessary to process and flare the ends of the corrugated pipes. For example, Chinese invention patent CN111231259B discloses a method for integral molding of PVC corrugated pipes. In this method, when flaring the corrugated pipe, two symmetrically arranged flaring molds are set in the corrugated pipe forming machine. When the two flaring molds are closed, the outer wall of the corrugated pipe is adsorbed onto the flaring mold by vacuuming, and at the same time, the inner wall of the corrugated pipe is adhered to the outer wall by increasing air pressure, so that the inner and outer walls of the corrugated pipe are completely adhered to form a flare.

[0004] While the aforementioned integrated molding method for PVC corrugated pipes improves the efficiency of corrugated pipe flaring to some extent, it can only process and flare corrugated pipes of a preset length. When the length of the corrugated pipe to be processed and flared changes, the number and size of the forming molds and the size and position of the flaring molds of the corrugated pipe forming machine need to be adjusted manually. This is cumbersome, time-consuming, and affects the efficiency of corrugated pipe flaring. Summary of the Invention

[0005] Therefore, it is necessary to provide an auxiliary shaping device for the extrusion of large-diameter water supply and drainage pipes to address the problem of low efficiency in the current corrugated pipe flaring process.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A large-diameter water supply and drainage pipe extrusion auxiliary shaping device, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device comprising:

[0008] Two sets of mirror-symmetrical molding modules, each of which includes N molding molds connected end to end. When the two sets of molding modules rotate synchronously in opposite directions, the molding mold that is aligned with them can receive material with a preset temperature, and form the material into a tube shape through continuous mold closing and opening.

[0009] Two flaring molds are arranged in a mirror-symmetrical manner, wherein the radius of the flaring surface of the flaring mold is larger than the radius of the forming surface of the forming mold;

[0010] Two sets of mirror-symmetrically arranged switching mechanisms are used to replace two of the two sets of forming molds in the two sets of forming modules, so that when the two sets of forming modules rotate synchronously in opposite directions, the two flaring molds can close and open to flare the pipe.

[0011] Furthermore, the switching mechanism includes a first guide rail and a second guide rail. When the flaring mold slides along the second guide rail, one of the forming molds simultaneously slides along the first guide rail to complete the replacement.

[0012] Furthermore, the first guide rail includes a first sub-rail, a second sub-rail, and a third sub-rail connected end to end. The first sub-rail, the second sub-rail, and the third sub-rail are all inclined. The vertical height of the connection between the first sub-rail and the second sub-rail is higher than the vertical height of the connection between the second sub-rail and the third sub-rail. The second guide rail includes a fourth sub-rail parallel to the first sub-rail and having equal length, and a fifth sub-rail parallel to the third sub-rail. When the flaring mold slides along the fourth sub-rail, one of the forming molds on the sliding guide rail on which it is located slides along the first sub-rail to replace the forming mold. When the forming mold slides along the third sub-rail, the flaring mold slides along the fifth sub-rail to replace the flaring mold.

[0013] Furthermore, the bottom of the molding die is provided with a first stop block that can elastically slide along a direction parallel to the sliding guide rail, and the top of the flaring die is provided with a second stop block that can elastically slide along a direction parallel to the sliding guide rail. The first stop block and the second stop block can stop the flaring die when the molding die moves with the molding module, or the flaring die can move the molding die when it moves with the molding module.

[0014] Furthermore, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device also includes a one-way mechanism, which is disposed at the connection between the first and second rails. The one-way mechanism is used to prevent the forming mold from sliding along the first rail when the forming mold switches from the first rail to the second rail.

[0015] Furthermore, the one-way mechanism includes a one-way plate, which is arranged parallel to the second rail and has one end hinged to the connection between the first rail and the second rail, while the other end is suspended in the air. The one-way plate can only rotate in one direction to prevent the molding die from sliding along the first rail.

[0016] Furthermore, in one set of molding modules, all the molding molds on the wall surface near the molding surface and one flaring mold on the wall surface near the flaring surface are provided with connecting grooves; in another set of molding modules, all the molding molds on the wall surface near the molding surface and one flaring mold on the wall surface near the flaring surface are provided with connecting protrusions that can engage with the connecting grooves and slide elastically.

[0017] Furthermore, the connecting groove and the connecting protrusion are hemispherical in shape.

[0018] Furthermore, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device also includes an air extraction mechanism, which is used to extract the gas at the forming surface of the forming mold and the gas at the flaring surface of the flaring mold so that the material is formed into a tube shape under the pressure difference on both sides of the material.

[0019] Furthermore, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device also includes a conveying mechanism, which is used to drive the forming module to rotate.

[0020] The beneficial effects of this invention are:

[0021] The present invention provides an auxiliary shaping device for extruding large-diameter water supply and drainage pipes. During the pipe processing, adjacent forming dies on two forming modules receive materials with a preset temperature. When the two forming modules rotate synchronously in opposite directions, the material is formed into a pipe shape through continuous mold closing and opening. When it is necessary to flare the pipe, one of the forming dies is replaced by a switching mechanism. Then, when the two forming modules continue to rotate synchronously in opposite directions, the two flaring dies can close and open to flare the pipe. This allows the flaring position of the pipe to be controlled according to the length requirements of different pipes, thereby improving the applicability of the device and the efficiency of pipe processing and flaring. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a large-diameter water supply and drainage pipe extrusion auxiliary shaping device provided in an embodiment of the present invention;

[0023] Figure 2 This is a top view of a large-diameter water supply and drainage pipe extrusion auxiliary shaping device provided in an embodiment of the present invention;

[0024] Figure 3This is a schematic diagram illustrating the working principle of a large-diameter water supply and drainage pipe extrusion auxiliary shaping device according to an embodiment of the present invention.

[0025] Figure 4 A three-dimensional structural diagram of the sliding guide rail of the large-diameter water supply and drainage pipe extrusion auxiliary shaping device provided in an embodiment of the present invention;

[0026] Figure 5 for Figure 4 A partially enlarged schematic diagram of the sliding guide rail at point A of the large-diameter water supply and drainage pipe extrusion auxiliary shaping device shown.

[0027] Figure 6 A three-dimensional structural schematic diagram of the forming mold of the large-diameter water supply and drainage pipe extrusion auxiliary shaping device provided in an embodiment of the present invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the flaring mold of the large-diameter water supply and drainage pipe extrusion auxiliary shaping device provided in an embodiment of the present invention.

[0029] in:

[0030] 100. Forming rack;

[0031] 110. First guide ring; 111. First adjusting platform; 1111. First rail divider; 1112. Second rail divider; 1113. Third rail divider;

[0032] 120. Second guide ring; 121. Guide platform; 122. Second slide groove; 123. Second adjusting platform; 1231. Fourth rail; 1232. Fifth rail; 1233. Sixth rail; 124. Push plate;

[0033] 130. Connecting seat; 131. Connecting rod; 132. Connecting hole;

[0034] 200. Molding mold; 210. Molding base; 211. Corrugated surface; 212. First exhaust pipe; 213. First connecting groove; 214. First cooling groove; 215. First slider;

[0035] 300. Flaring mold; 310. Flaring seat; 311. Flaring surface; 312. Second air extraction pipe; 313. Second connecting groove; 314. Second cooling groove; 315. Second stop block; 316. Second slider. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0037] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] like Figures 1 to 7 As shown, an embodiment of the present invention provides a large-diameter water supply and drainage pipe extrusion auxiliary shaping device for processing and widening pipes of arbitrary lengths. Taking the processing of corrugated pipes as an example, in this embodiment, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device is configured to include a forming frame 100, an extrusion head, an air jet mechanism, and a shifting mechanism. The number of forming frames 100 is set to two and arranged in a mirror symmetrical manner. Each forming frame 100 is provided with a closed rotating sliding guide rail. The two sliding guide rails are arranged in a mirror symmetrical manner, and each sliding guide rail is provided with a closed rotating forming module. The forming module can revolve along the sliding guide rail. In this embodiment, the sliding guide rail is set as follows: The system includes a first guide ring 110 and a second guide ring 120, both horizontally arranged. The first guide ring 110 and the second guide ring 120 are positioned opposite each other, with the first guide ring 110 located above the second guide ring 120 in the vertical direction. The bottom of the first guide ring 110 has a first groove, and the top of the second guide ring 120 has a second groove 122. The first groove and the second groove 122 are of the same size and both form a closed, rotating annular shape. The molding module is configured to include N molding dies 200, which are connected end-to-end and arranged side-by-side along the first guide ring 110 and the second guide ring 120. Figure 6As shown, the molding die 200 is configured to include a molding base 210, which has an approximately C-shaped structure. The molding base 210 has a circumferential wall surface, which serves as the molding surface. When processing the corrugated pipe, this molding surface becomes the corrugated surface 211. The corrugated surface 211 is configured to have equally spaced annular protrusions along the axial direction of the circumferential wall surface. The molding die 200 is connected to the first guide ring 110 and the second guide ring 120 via a connecting seat 130 and a connecting rod 131. The connecting seat 130 and the connecting rod 131 are disposed between the first guide ring 110 and the second guide ring 120. The connecting rod 131 is arranged vertically and is inserted into the connecting seat 130. One end of the connecting rod 131 can be slidably inserted into the first guide ring 110 along the first groove, while the other end... The second guide ring 120 can be slidably inserted along the second slide groove 122. At least two connecting holes 132 are provided on the connecting seat 130. The connecting holes 132 between two adjacent connecting seats 130 on the same forming frame 100 are staggered vertically, and adjacent connecting seats 130 are connected together by a pin engaging with the connecting holes 132, similar to a chain connection. When the two forming modules rotate synchronously in opposite directions, their aligned forming mold 200 can receive material with a preset temperature and in a molten state, and form a tube shape through continuous mold closing and opening. A flaring mold 300 is movably mounted on each sliding guide rail. The two flaring molds 300 are mirror-symmetrically arranged, and the shape of the flaring mold 300 is approximately the same as the shape of the forming mold 200. Figure 7 As shown, the flaring mold 300 is configured to include a flaring seat 310, which has an approximately C-shaped structure. The flaring seat 310 has a circumferential wall surface, which is the flaring surface 311. The radius of the flaring surface 311 of the flaring mold 300 is set to be greater than the radius of the forming surface of the forming mold 200, so that the diameter of the pipe formed on the flaring surface 311 is greater than the diameter of the pipe formed on the forming surface, thereby forming a flare, which is convenient for connecting with other pipes.

[0040] The extrusion head is positioned between the two forming frames 100 and near the starting mold closing position of the adjacent forming dies 200 in the two forming modules. The extrusion head is used to extrude material with a preset temperature and in a molten state along... Figure 2 The material is extruded in the direction indicated by the arrow into the space between adjacent molding dies 200 in the two molding modules.

[0041] The jetting mechanism is located between the two forming frames 100 and along... Figure 2The arrows shown pass through all the closing positions of adjacent molding dies 200 in the two molding modules. The jetting mechanism is used to spray high-pressure gas onto the molding surface of the molding die 200 or the flaring surface 311 of the flaring die 300 so that the material adheres tightly to the molding surface of the molding die 200 or the flaring surface 311 of the flaring die 300, thereby forming the material into a tubular shape.

[0042] The number of shifting mechanisms is set to two sets and they are respectively set on two sliding guide rails. The two sets of shifting mechanisms are mirror-symmetrically arranged. The shifting mechanism is used to replace one of the forming molds 200 on the sliding guide rail where the flaring mold 300 is located. Thus, when the two sets of forming molds rotate synchronously in opposite directions, the two flaring molds 300 can close and open to flare the pipe.

[0043] During the processing of bellows, such as Figure 2 As shown, the extruder extrudes material at a preset temperature and in a molten state between adjacent molding dies 200 in the two molding modules. The upper molding module is set to rotate counter-clockwise, and the lower molding module rotates synchronously clockwise, with both molding modules rotating at the same speed. During the rotation of the two molding modules, along... Figure 2 As indicated by the arrows, adjacent molding dies 200 on the two molding modules move the material through continuous mold closing and opening. Simultaneously, a jetting mechanism sprays high-pressure gas, causing the material to adhere tightly to the corrugated surface 211 of the molding die 200, forming a corrugated pipe. When flaring is required, two sets of switching mechanisms replace one of the molding dies 200 on their respective sliding guides with two flaring dies 300. Then, when the two molding modules rotate to the point where the two flaring dies 300 are closed, the material, under the action of high-pressure gas... It can closely adhere to the flaring surface 311 of the flaring mold 300 to form a flaring opening in the material. When the two sets of forming modules rotate to the point where the two flaring molds 300 open, the two sets of switching mechanisms replace the two replaced forming molds 200 with the flaring molds 300. The above process is repeated to continuously process multiple sections of pipe with a preset length. There is a flaring opening between two adjacent pipes with a preset length. Thus, the flaring position of the pipe can be controlled according to the length requirements of different pipes, improving the applicability of the device while improving the efficiency of pipe processing and flaring.

[0044] In some embodiments, the replacement mechanism is configured to include a first guide rail and a second guide rail. When the flaring mold 300 slides along the second guide rail, one of the forming molds 200 simultaneously slides along the first guide rail to complete the replacement. In this embodiment, the first guide rail and the second guide rail can be configured to both be arranged vertically upward and interconnected. The first guide rail and the second guide rail are arranged on one of the connecting seats 130 of the same forming frame 100. The flaring mold 300 and the forming mold 200 on the connecting seat 130 are fixedly connected together and located directly below the forming mold 200 on the connecting seat 130. When the flaring mold 300 slides along the second guide rail, one of the forming molds 200 simultaneously slides along the first guide rail to complete the replacement.

[0045] Specifically, to provide the driving force for one of the forming molds 200 to slide synchronously along the first guide rail when the flaring mold 300 slides along the second guide rail, a first drive cylinder is provided on the connecting seat 130, which is provided with the first guide rail and the second guide rail. The output shaft of the first drive cylinder is set vertically downward and fixedly connected to the top of the forming mold 200 on the connecting seat 130. During use, when the output shaft of the first drive cylinder retracts, it drives the flaring mold 300 to slide upward along the second guide rail, and the forming mold 200 on the connecting seat 130, which is provided with the first guide rail and the second guide rail, slides synchronously upward along the first guide rail to complete the replacement. When the output shaft of the first drive cylinder extends, it drives the flaring mold 300 to slide downward along the second guide rail, and the forming mold 200 on the connecting seat 130, which is provided with the first guide rail and the second guide rail, slides downward along the first guide rail to complete the reset.

[0046] Understandably, the first drive cylinder can be any of the following: a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

[0047] In other embodiments, such as Figure 3 As shown, a first adjusting platform 111 facing upward is provided on the side wall of the first guide ring 110. A first guide rail is provided on the wall of the first adjusting platform 111 away from the first guide ring 110. The first guide rail can also be configured to include a first sub-rail 1111, a second sub-rail 1112, and a third sub-rail 1113 connected end to end. The first sub-rail 1111, the second sub-rail 1112, and the third sub-rail 1113 are all inclined. The vertical height of the connection between the first sub-rail 1111 and the second sub-rail 1112 is higher than the vertical height of the connection between the second sub-rail 1112 and the third sub-rail 1113, thereby allowing the forming mold 200 to overcome friction and slide along the second sub-rail 1112 towards the third sub-rail 1113 under the action of gravity. Figure 6As shown, the molding die 200 is slidably inserted into the connecting seat 130 in a vertical direction. A first slider 215 is provided on the side of the molding die 200 facing away from the molding surface. The first slider 215 can be rhomboid or cylindrical. The first slider 215 can slide along the first guide rail 1111, the second guide rail 1112, and the third guide rail 1113. A second adjusting platform 123 is provided on the side wall of the second guide ring 120, facing downward. An annular guide platform 121 is provided on the bottom outer peripheral wall of the second adjusting platform 123. The height of the guide platform 121 in the vertical direction is lower than that of the second guide ring 120. The height of the adjusting platform 123 in the vertical direction is such that the flaring mold 300 can push the forming mold 200 to the connection point of the first guide rail 1111 and the second guide rail 1112. The second guide rail can also be set on the wall of the second adjusting platform 123 away from the second guide ring 120. The second guide rail is configured to include a fourth guide rail 1231 parallel to the first guide rail 1111 and having equal length, and a fifth guide rail 1232 parallel to the third guide rail 1113. The ends of the fourth guide rail 1231 and the fifth guide rail 1232 that are close to each other are connected by a sixth guide rail 1233. The sixth guide rail 1233 is set in the vertical direction, such as... Figure 5 As shown, a push plate 124 capable of sliding vertically up and down is provided within the sixth guide rail 1233. Initially, the bottom of the flared mold 300 abuts against the push plate 124, as shown. Figure 7 As shown, a second slider 316 is provided on the side of the flaring mold 300 facing away from the flaring surface 311. The second slider 316 can be set as rhomboid or cylindrical. The second slider 316 can slide along the fourth rail 1231, the fifth rail 1232 and the sixth rail 1233. When the flaring mold 300 slides along the fourth rail 1231, one of the forming molds 200 on the sliding guide rail it is on slides along the first rail 1111 to replace the forming mold 200. When the forming mold 200 slides along the third rail 1113, the flaring mold 300 slides along the fifth rail 1232 to replace the flaring mold 300.

[0048] like Figure 2 As shown, the upper forming module is set to rotate counterclockwise, while the lower forming module rotates clockwise simultaneously, and the two forming modules rotate at the same speed. When the pipe needs to be flared, taking the shifting mechanism corresponding to the lower forming module as an example, as follows... Figure 3As shown, the push plate 124 drives the flaring mold 300 to move along the sixth sub-rail 1233 until it connects with one of the forming molds 200 on the forming frame 100. As the forming module below continues to rotate clockwise, it drives the flaring mold 300 and the corresponding forming mold 200 to rotate clockwise. During the clockwise rotation of the flaring mold 300 and the corresponding forming mold 200, the flaring mold 300 slides along the fourth sub-rail 1231, and then slides to the left and upward. The forming mold 200 corresponding to the flaring mold 300 slides along the first sub-rail 1111, and then slides to the left and upward. When the flaring mold 300 slides along the fourth sub-rail 1231 to the top of the second adjusting platform 123, the corresponding forming mold 200 simultaneously arrives at the connection point of the first sub-rail 1111 and the second sub-rail 1112. The forming module continues to rotate clockwise. The bottom of the flaring mold 300 abuts against the top of the second adjusting platform 123 and rotates synchronously with the forming module. When the flaring mold 300 moves from the top of the second adjusting platform 123 to the guide platform 121, the top and bottom surfaces of the flaring mold 300 and the other forming molds 200 in the forming module are coplanar. As the forming module below continues to rotate clockwise, the flaring mold 300 can close and open to complete the flaring of the pipe. The corresponding forming mold 200 overcomes friction under the action of gravity and slides along the second rail 1112 toward the third rail 1113. When the corresponding forming mold 200 moves to the connection between the second rail 1112 and the third rail 1113, the bottom surface of the corresponding forming mold 200 abuts against the top surface of the other forming molds 200 in the forming module to keep its position unchanged.

[0049] As the lower molding module continues to rotate clockwise, when the flaring mold 300 reaches the end of the fifth rail 1232 away from the sixth rail 1233, the bottom surface of the corresponding molding mold 200 abuts against the top surface of the flaring mold 300. As the flaring mold 300 slides along the fifth rail 1232 and then slides downward to the left, the corresponding molding mold 200 slides along the third rail 1113 and then slides downward to the left. When the flaring mold 300 moves onto the push plate 124, the corresponding molding mold 200 is re-inserted into the connecting seat 130. Under the restriction of the first stop, the position of the corresponding molding mold 200 on the connecting seat 130 is fixed, and it continues to rotate clockwise with the lower molding module.

[0050] Specifically, the flaring mold 300 and one of the forming molds 200 on the forming frame 100 can be magnetically connected together by an electromagnet. When the flaring mold 300 replaces one of the forming molds 200 on the forming frame 100, the electromagnet is energized, causing the flaring mold 300 and the forming mold 200 on the forming frame 100 to be magnetically connected. When the corresponding forming mold 200 arrives at the junction of the first rail 1111 and the second rail 1112, the electromagnet is de-energized, causing the flaring mold 300 and the corresponding forming mold 200 to lose their magnetic connection, thereby separating the two.

[0051] Specifically, to provide the driving force for the push plate 124 to slide up and down in the vertical direction, a second drive cylinder is provided below the push plate 124 in the sixth rail 1233, and the output shaft of the second drive cylinder is set upward in the vertical direction and fixedly connected to the push plate 124. During use, when the output shaft of the second drive cylinder extends, it drives the push plate 124 to slide upward along the sixth rail 1233, thereby driving the flaring mold 300 to slide upward along the sixth rail 1233. When the output shaft of the second drive cylinder retracts, it drives the push plate 124 to slide downward along the sixth rail 1233, thereby driving the flaring mold 300 to slide downward along the sixth rail 1233.

[0052] Understandably, the second drive cylinder can be any of a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

[0053] In other embodiments, the bottom of the molding die 200 is provided with a first stop block that can elastically slide along a direction parallel to the sliding guide rail, such as... Figure 7 As shown, the top of the flaring mold 300 is provided with a second stop 315 that can slide elastically along the direction parallel to the sliding guide rail. The first stop and the second stop 315 can stop the flaring mold 300 to move when the forming mold 200 moves with the forming module, or the flaring mold 300 can move when the forming mold 200 moves with the forming module.

[0054] like Figure 2 As shown, the upper molding module is set to rotate counterclockwise, while the lower molding module rotates clockwise synchronously, and the two molding modules rotate at the same speed; Figure 3As shown, the push plate 124 drives the flaring mold 300 to move along the sixth guide rail 1233 to the set position. As the forming module below continues to rotate clockwise, the side of the first stop block on one of the forming molds 200 on the forming frame 100 where the flaring mold 300 is located abuts against the side of the second stop block 315 on the flaring mold 300. The second stop block 315 on the flaring mold 300 moves to the right relative to the flaring mold 300, and one of the forming molds 200 on the forming frame 100 where the flaring mold 300 is located... The first stop on the forming mold 200 moves to the left. When both the first stop and the second stop 315 have moved to the end, the forming module drives the second stop 315 to rotate clockwise via the first stop, causing the flaring mold 300 to slide along the fourth rail 1231, and then slide to the left and upward. The forming mold 200 corresponding to the flaring mold 300 slides along the first rail 1111, and then slides to the left and upward. When the flaring mold 300 slides along the fourth rail 1231 to the top of the second adjusting table 123... The corresponding forming mold 200 simultaneously arrives at the connection point of the first guide rail 1111 and the second guide rail 1112. As the forming module below continues to rotate clockwise, the bottom of the flaring mold 300 abuts against the top of the second adjusting platform 123 and rotates synchronously with the forming module. When the flaring mold 300 moves from the top of the second adjusting platform 123 to the guide platform 121, the top and bottom surfaces of the flaring mold 300 and the other forming molds 200 in the forming module coincide. The forming module continues to rotate clockwise, and the flaring mold 300 can close and open to complete the flaring of the pipe. The corresponding forming mold 200 overcomes friction under the action of gravity and slides along the second rail 1112 toward the third rail 1113. When the corresponding forming mold 200 moves to the connection between the second rail 1112 and the third rail 1113, the bottom surface of the corresponding forming mold 200 abuts against the top surface of the other forming molds 200 in the forming module to keep its position unchanged.

[0055] As the lower molding module continues to rotate clockwise, when the flaring mold 300 reaches the end of the fifth guide rail 1232 away from the sixth guide rail 1233, the side of the first stop block on one of the molding molds 200 on the molding frame 100 where the flaring mold 300 is located abuts against the side of the second stop block 315 on the flaring mold 300. The second stop block 315 on the flaring mold 300 moves to the right relative to the flaring mold 300, and the first stop block on one of the molding molds 200 on the molding frame 100 where the flaring mold 300 is located moves to the left. When both the first stop block and the second stop block 315 have moved to their ends, the molding module... The first stop is rotated clockwise by the second stop 315, and the bottom surface of the corresponding forming mold 200 abuts against the top surface of the flaring mold 300. As the flaring mold 300 slides along the fifth rail 1232, it slides downward to the left. The corresponding forming mold 200 slides along the third rail 1113, and then slides downward to the left. When the flaring mold 300 moves onto the push plate 124, the corresponding forming mold 200 is re-inserted into the connecting seat 130. Under the restriction of the first stop, the position of the corresponding forming mold 200 on the connecting seat 130 is fixed, and it continues to rotate clockwise with the forming module below.

[0056] In other embodiments, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device is further configured to include a one-way mechanism. The one-way mechanism is located at the connection between the first guide rail 1111 and the second guide rail 1112. The one-way mechanism is used to prevent the forming mold 200 from sliding along the first guide rail 1111 when it switches from the first guide rail 1111 to the second guide rail 1112. In this embodiment, the one-way mechanism includes a one-way plate. The one-way plate and the second guide rail 1112 are arranged parallel to each other, with one end hinged to the connection between the first guide rail 1111 and the second guide rail 1112, and the other end suspended in the air. Figure 4 As shown, the one-way plate can only rotate clockwise so that the molding die 200 can pass over the one-way plate to the second guide rail 1112 and slide along the second guide rail 1112 under the action of gravity to overcome friction.

[0057] In some embodiments, such as Figure 6 and Figure 7As shown, all the molding dies 200 on a sliding guide rail have connecting grooves on their walls near the molding surface, and one flared die 300 has connecting grooves on its walls near the flared surface 311. For ease of description, the connecting grooves on all the molding dies 200 on the sliding guide rail are named the first connecting groove 213, and the connecting grooves on the flared die 300 on the sliding guide rail are named the second connecting groove 313. On another sliding guide rail, all the molding dies 200 on their walls near the molding surface and the flared die 300 on its walls near the flared surface 311 are provided with connecting protrusions that engage with the connecting grooves and can slide elastically. For ease of description, the connecting grooves on all the molding dies 200 on the sliding guide rail are provided with connecting protrusions. The connecting protrusion is named the first connecting protrusion, and the connecting protrusion on the flaring mold 300 on the sliding guide rail is named the second connecting protrusion. The first connecting groove 213 and the first connecting protrusion are engaged, and the second connecting groove 313 can engage with the second connecting protrusion. Thus, during the pipe processing, on the one hand, when the two forming modules are closed, the adjacent forming molds 200 can be aligned by the engagement of the first connecting groove 213 and the first connecting protrusion, avoiding misalignment. On the other hand, when the two flaring molds 300 are closed, the two flaring molds 300 can be aligned by the engagement of the second connecting groove 313 and the second connecting protrusion, avoiding misalignment, thereby helping to improve the surface quality of the pipe.

[0058] Understandably, the shapes of the connecting groove and connecting protrusion can be set to cuboid, cylindrical, conical, or triangular pyramidal shapes, etc.

[0059] It is understandable that multiple connecting grooves and connecting protrusions can be provided. The interlocking of multiple connecting grooves and connecting protrusions can improve the stability of adjacent molding dies 200 in two molding modules when they are closed or the stability of two flared dies 300 when they are closed.

[0060] In a further embodiment, the connecting groove and the connecting protrusion are both set to a hemispherical shape, so that the connecting groove and the connecting protrusion can fit better, thereby making the adjacent molding molds 200 in the two molding modules more smoothly when closing and opening the mold.

[0061] In some embodiments, such as Figure 6 As shown, a semi-circular first cooling groove 214 is provided on the forming base 210. When the forming mold 200 closes, the first cooling grooves 214 of the two forming molds 200 form a complete ring. At this time, cold water or coolant can be introduced into the first cooling groove 214 to make the pipe form quickly; Figure 7As shown, a semi-annular second cooling groove 314 is provided on the flaring seat 310. When the flaring mold 300 is closed, the second cooling grooves 314 of the two flaring molds 300 form a complete ring. At this time, cold water or coolant can be introduced into the second cooling groove 314 to make the pipe flaring form quickly.

[0062] In some embodiments, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device is further configured to include an air extraction mechanism. The air extraction mechanism is used to extract gas from the forming surface of the forming die 200 and the flaring surface 311 of the flaring die 300 to form the material into a tubular shape under the pressure difference across the material. The air extraction mechanism is configured to include an air pump and an air extraction pipe, such as... Figure 6 As shown, the suction pipe is located at the top of the molding die 200, as... Figure 7 As shown, the suction pipe is located at the bottom of the flaring mold 300. For ease of description, the suction pipe on the forming mold 200 is named the first suction pipe 212, and the suction pipe on the flaring mold 300 is named the second suction pipe 312. One end of the first suction pipe 212 is connected to the forming surface of the forming mold 200, and the other end is connected to the suction pump. One end of the second suction pipe 312 is connected to the flaring surface 311 of the flaring mold 300, and the other end is connected to the suction pump. In use, the suction pump is started, and the suction pump extracts the gas at the forming surface of the forming mold 200 and the gas at the flaring surface 311 of the flaring mold 300 through the first suction pipe 212 or the second suction pipe 312, so that a pressure difference is formed on both sides of the material. Under the action of the pressure difference on both sides of the material, the material is pressed tightly against the forming surface of the forming mold 200 or the flaring surface 311 of the flaring mold 300 and forms a tube.

[0063] In some embodiments, the large-diameter water supply and drainage pipe extrusion auxiliary shaping device is further configured to include a conveying mechanism, which is used to drive the molding module to rotate. In this embodiment, the conveying mechanism is configured as a sprocket and a chain. Taking a molding module on a molding frame 100 as an example, the chain passes through all the connecting rods 131 and is fixedly connected to these connecting rods 131. The number of sprockets is set to two. Both sprockets are rotatably mounted on the molding frame 100 and are respectively mounted at both ends of the molding frame 100. Both sprockets are simultaneously connected to the chain drive. One sprocket is the driving wheel and the other sprocket is the driven wheel. In use, the driving wheel drives the driven wheel to rotate through the chain, and drives all the connecting rods 131 to slide simultaneously along the first slide groove and the second slide groove 122. The connecting rods 131 drive the corresponding molding mold 200 to slide along the first slide groove and the second slide groove 122.

[0064] Specifically, in order to provide the driving force for the rotation of the drive wheel, a drive motor is provided on the forming frame 100, and the motor shaft of the drive motor is fixedly inserted into the drive wheel to drive the drive wheel to rotate.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A large-diameter water supply and sewer pipe extrusion auxiliary shaping device characterized by, The large-diameter water supply and drainage pipe extrusion auxiliary shaping device comprises: two groups of mirror-symmetrically arranged forming die sets, each of the forming die sets comprising N forming dies connected in sequence, and the aligned forming dies of the two groups of forming die sets being capable of receiving material with a preset temperature and forming a pipe shape through continuous die closing and opening when the two groups of forming die sets rotate in opposite directions synchronously; two mirror-symmetrically arranged flaring dies, a radius of a flaring surface of the flaring dies being greater than a radius of a forming surface of the forming dies; two groups of mirror-symmetrically arranged transposition mechanisms, the transposition mechanisms being used to replace two of the forming dies in the two groups of forming die sets with the two flaring dies, so that the two flaring dies can close and open to flare the pipe when the two groups of forming die sets rotate in opposite directions synchronously; the transposition mechanisms comprising first guide rails and second guide rails, one of the forming dies synchronously sliding along the first guide rails to complete the replacement when the flaring dies slide along the second guide rails; the first guide rails comprising first, second and third sub-rails connected in sequence, the first, second and third sub-rails being arranged obliquely, a height of a connection between the first sub-rail and the second sub-rail being higher than a height of a connection between the second sub-rail and the third sub-rail in the vertical direction; the second guide rails comprising a fourth sub-rail parallel to the first sub-rail and having an equal length and a fifth sub-rail parallel to the third sub-rail; one of the forming dies on the sliding guide rail where the flaring dies slide along the fourth sub-rail slides along the first sub-rail to replace the forming die, and the flaring dies slide along the fifth sub-rail to replace the flaring dies when the forming die slides along the third sub-rail; the bottom of the forming die being provided with a first stopper capable of elastically sliding in parallel to the sliding guide rail, the top of the flaring die being provided with a second stopper capable of elastically sliding in parallel to the sliding guide rail, the first stopper and the second stopper being capable of stopping to drive the flaring die to move when the forming die moves with the forming die set or drive the forming die to move when the flaring die moves with the forming die set; the fourth sub-rail and the fifth sub-rail being connected by a sixth sub-rail arranged in the vertical direction, a push plate capable of sliding up and down in the vertical direction being arranged in the sixth sub-rail.

2. The large diameter water pipe extrusion assisted profiling device according to claim 1, characterized in that, The large-diameter water supply and drainage pipe extrusion auxiliary shaping device further comprises a one-way mechanism arranged at the connection between the first sub-rail and the second sub-rail, the one-way mechanism being used to hinder the forming die from sliding along the first sub-rail when the forming die switches from the first sub-rail to the second sub-rail.

3. A large diameter water pipe extrusion assisted profiling device according to claim 2, characterized in that, The one-way mechanism comprises a one-way plate, the one-way plate and the second sub-rail being arranged in parallel and one end of the one-way plate being hinged at the connection between the first sub-rail and the second sub-rail and the other end of the one-way plate being arranged in suspension, the one-way plate being capable of rotating in one direction only to hinder the forming die from sliding along the first sub-rail.

4. The large diameter water pipe extrusion assisted profiling device of claim 1, wherein, A connecting groove is arranged on the wall surface of the side close to the forming surface of all the forming dies in one group of the forming die sets and on the wall surface of the side close to the flaring surface of one flaring die; a connecting protrusion capable of being clamped with the connecting groove and capable of elastically sliding is arranged on the wall surface of the side close to the forming surface of all the forming dies in another group of the forming die sets and on the wall surface of the side close to the flaring surface of another flaring die.

5. A large diameter water pipe extrusion assisted profiling device according to claim 4, characterized in that, The connecting groove and the connecting protrusion are semispherical in shape.

6. The large diameter water pipe extrusion assisted profiling device of claim 1, wherein, The large-diameter water supply and drainage pipe extrusion auxiliary shaping device further comprises an air extraction mechanism for extracting the gas at the forming surface of the forming die and the gas at the flaring surface of the flaring die to make the material form a pipe type under the pressure difference between the two sides of the material.

7. The large diameter water pipe extrusion assisted profiling device of claim 1, wherein, The large-diameter water supply and drainage pipe extrusion auxiliary shaping device further comprises a conveying mechanism for driving the forming die set to rotate.

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