Electrical bus tube slip forming apparatus

Abstract

The present application relates to the technical fields of power tube slip form production, and discloses a power tube slip form forming equipment, which comprises a plurality of self-rotation friction-reducing mechanisms, each of which comprises two symmetrically arranged self-rotation friction-reducing assemblies, each of which is provided with a friction-reducing sleeve sleeved on a guide rod, when a mold one and a mold two are in a closed mold state or an open mold state, the mold one or the mold two is in contact with one of the friction-reducing sleeves on the same self-rotation friction-reducing mechanism, and the other friction-reducing sleeve is rotated by 180 degrees, so that the upper half region and the lower half region of the outer wall of the friction-reducing sleeve are replaced; the power tube slip form forming equipment drives the two friction-reducing sleeves to replace the upper half region and the lower half region of the outer wall, so that the two friction-reducing sleeves can be subjected to uniform friction, the wear rate of the two friction-reducing sleeves is reduced, and the guide rod does not need to be replaced when replaced, thereby prolonging the service life of the guide rod.

Description

Technical Field

[0001] This invention relates to the field of slipform production technology for power ducts, and specifically to a slipform forming device for power ducts. Background Technology

[0002] The consumption of plastic products is increasing year by year, resulting in a large stockpile of waste HDPE, MPP, polypropylene power plastic pipes, and industrial plastic scraps. Landfilling and incinerating plastic solid waste easily leads to water and soil pollution and resource waste. The industry is gradually promoting the sorting, modification, and recycling of waste plastics for resource utilization, with recycled and modified plastics becoming the mainstream raw material for power cable conduits. The construction scale of urban power grids and integrated pipe corridors continues to expand, increasing the demand for cable protection conduits for underground power cable laying. The limitations of traditional concrete conduits and on-site splicing of single plastic pipes are becoming increasingly apparent. Concrete conduits are heavy, resulting in high transportation and installation costs, poor seepage prevention and corrosion resistance, and are prone to cracking and seepage due to long-term exposure to acidic and alkaline soil. On-site splicing of single plastic pipes requires multiple pipe fitting connection processes, leading to long construction cycles, leaks and displacement at joints, and significant difficulties in later maintenance and repair. Therefore, prefabricated slipforms for power cable conduits are necessary. The slipform forming equipment for power ducts is an integrated modular production line that is compatible with waste HDPE, MPP, polypropylene power plastic pipes and industrial plastic scraps as raw materials. It is used for batch processing of multi-hole integrated cable protection ducts for underground power grid laying. The entire set of equipment integrates raw material processing, composite plasticizing, integrated molding, shaping and cooling, and intelligent control. Each module operates in a coordinated manner through a bus electrical control system. It is used for shaping and limiting, and continuous slipforming when laying cast-in-place concrete ducts, eliminating the need for repeated formwork support and disassembly, ensuring the pipeline size and shape, and improving construction efficiency.

[0003] Chinese patent document CN210525667U discloses a high-precision electric omnidirectional CNC injection molding machine, including a machine body. Two opposing first guide rails are fixedly provided at one end of the machine body. A movable support is provided between the opposing sides of the two first guide rails and cooperates with them. A push motor is fixedly provided on one side of the movable support. A transmission threaded rod is fixedly provided at the end of the shaft of the push motor by welding. A fixed seat is provided on the side of the first guide rail away from the movable support. A matching mounting bearing is provided on the side of the fixed seat opposite to the transmission threaded rod. An injection arm matching the transmission threaded rod is fixedly provided on the side of the fixed seat away from the movable support. Several heating plates with equal angles are provided between the side of the transmission threaded rod opposite to the injection arm. A mold assembly is provided at the end of the machine body adjacent to the injection arm.

[0004] During use, the heated raw material is delivered to the mold assembly in the closed state through the injection arm. After the raw material cools and solidifies, the mold assembly is opened and the solidified product is ejected from the mold assembly. The solidified product can then be automatically removed by external equipment.

[0005] However, the aforementioned patent documents also have the following shortcomings: The mold assembly includes two sets of molds, a front mold and a rear mold. During the switching between the mold-closed and mold-open states, the two sets of molds rely on multiple guide rods for alignment and guidance. When the front and rear molds are arranged in a front-to-back direction, the entire weight of the mold assembly is supported by the guide rods. During the reciprocating sliding motion of the mold along the guide rods, the mold's gravity continuously presses down on the guide rods, causing the upper half of the guide rod's outer wall to be in close contact with the inner wall of the mold's guide hole for a long period. This results in continuous and significant sliding friction at the contact point. With long-term reciprocating operation, the wear rate of the upper half of the guide rod's outer circumference accelerates, and the clearance between the guide rod and the mold's guide hole continuously widens. This directly reduces the mold's alignment accuracy and sliding guidance accuracy. Once the guide rod wears to its limit, it must be replaced entirely, shortening its service life. Summary of the Invention

[0006] This invention provides a slipform forming device for power pipes, which aims to solve the problem in related technologies where the wear rate of the upper half of the outer circumference of the guide rod is accelerated and the service life of the guide rod is shortened during the reciprocating sliding motion of the mold along the guide rod.

[0007] The slipform molding equipment for power pipes of the present invention includes an injection molding mechanism for heating recycled modified plastic raw materials to form a composite melt and a cooling and shaping module for shaping the composite melt into a slipform. The cooling and shaping module includes a second mold and a first mold arranged front to back, and a plurality of guide rods for limiting and guiding the first mold and the second mold. The second mold and the first mold have a closed mold state and an open mold state. The equipment also includes a plurality of self-rotating friction reduction mechanisms, which are respectively arranged at the contact points between the first mold, the second mold and the plurality of guide rods. The self-rotating friction reduction mechanism includes two symmetrically arranged self-rotating friction reduction components. Each self-rotating friction reduction component is provided with a friction reduction sleeve sleeved on the guide rod. When the first mold and the second mold are in the closed mold state or the open mold state, the first mold or the second mold contacts one of the friction reduction sleeves on the same self-rotating friction reduction mechanism, while the other friction reduction sleeve rotates 180 degrees so that the upper half area and the lower half area of ​​the outer wall of the friction reduction sleeve are replaced.

[0008] Beneficial effects: During the processing and molding of the slip mold, the injection molding mechanism heats the recycled modified plastic raw material to form a composite melt, which is then transported to molds two and one in the closed state. The composite melt in molds two and one cools and solidifies into a slip mold. Molds two and one are arranged one in front of the other, and they have closed and open states. When switching between the closed and open states, multiple guide rods guide molds two and one. When molds two and one are in the closed or open state, mold two or one of them contacts one of the anti-friction sleeves, while the other anti-friction sleeve can rotate 180 degrees to replace the upper and lower half of the outer wall of the anti-friction sleeve. This allows the two anti-friction sleeves to be subjected to uniform friction, reducing the wear rate of the two anti-friction sleeves. Moreover, the guide rods do not need to be replaced during replacement, thus extending the service life of the guide rods.

[0009] Preferably, the self-rotating wear-reducing assembly further includes a rotating cylinder rotatably connected to the guide rod, and the rotating cylinder is detachably and fixedly connected to the wear-reducing sleeve.

[0010] Its effect is that by setting a rotating cylinder, the friction-reducing sleeve can be easily disassembled and replaced individually, saving manufacturing costs.

[0011] Preferably, the guide rod is provided with an annular groove, and the outer side of the rotating cylinder is threaded with multiple locking parts, the ends of the multiple locking parts near the central axis of the rotating cylinder being inserted into the annular groove.

[0012] Its effect is that by connecting multiple locking parts threaded onto the rotating cylinder and inserting them into the annular groove on the guide rod, the rotating cylinder can be limited to prevent it from moving along its axis on the guide rod, and it is convenient to install or remove the rotating cylinder.

[0013] Preferably, the ends of the wear-reducing sleeves on the two self-rotating wear-reducing components are aligned so that mold one or mold two can transition between the two wear-reducing sleeves.

[0014] Its effect is that: mold one or mold two alternately contact the two anti-friction sleeves, which can easily drive the anti-friction sleeve that is not in contact with mold one or mold two to rotate.

[0015] Preferably, the self-rotating wear reduction mechanism further includes a power component for driving the rotating cylinder to rotate. Each self-rotating wear reduction component includes a transmission unit connected to the rotating cylinder and the power component for driving the rotating cylinder. When the two transmission units run synchronously in the same direction, they can only drive the wear reduction sleeve that does not contact mold one or mold two to rotate.

[0016] Its effect is that the transmission units in the two self-rotating friction-reducing components are driven to run synchronously and in the same direction by the power component, which can drive the friction-reducing sleeve that does not contact mold one or mold two to rotate.

[0017] Preferably, the transmission unit includes a first bevel gear, a fixed frame, a rotating shaft, a one-way bearing, and a second bevel gear. The first bevel gear is fixedly connected to the rotating cylinder, the fixed frame is fixedly connected to the guide rod, and the rotating shaft is rotatably connected to the fixed frame. The rotating shaft is rotatably connected to the second bevel gear through the one-way bearing. The second bevel gear and the first bevel gear are meshed together. The rotating shaft has two opposite rotation directions. One rotation direction of the rotating shaft can drive the second bevel gear and the first bevel gear to mesh and transmit power, while the other rotation direction of the rotating shaft cannot drive the second bevel gear and the first bevel gear to mesh and transmit power.

[0018] Its effect is that during the process of the power component driving the shaft to rotate, the shaft has two opposite directions of rotation. When the shaft rotates in one direction, it can drive the meshing transmission of bevel gear two and bevel gear one. When the shaft rotates in the other direction, it cannot drive the meshing transmission of bevel gear two and bevel gear one.

[0019] Preferably, the rotating shafts within the two transmission units drive bevel gear two and bevel gear one in opposite directions of rotation.

[0020] Its effect is that by driving the rotating shafts in the two transmission units to rotate bevel gear 2 and bevel gear 1 in opposite directions, the power component can drive the two transmission units to rotate 180 degrees synchronously and in the same direction, while the other wear-reducing sleeve will not rotate.

[0021] Preferably, the power assembly includes a drive source, transmission wheels, and a transmission belt. The drive source is fixedly mounted on a fixed base one or a fixed base two. There are three transmission wheels, which are respectively fixedly connected to the output shaft of the drive source and two rotating shafts. The transmission belt is connected between the three transmission wheels.

[0022] Its effect is that the starting drive source drives the transmission belt and three transmission wheels to drive the two rotating shafts to rotate synchronously in the same direction.

[0023] Preferably, it also includes a flow divider head fixedly connected to the injection molding mechanism and located between mold one and mold two. In the mold closed state, mold one is inserted into the flow divider head, and mold two is in contact with the flow divider head.

[0024] Its effect is that the single composite melt is evenly divided into multiple independent material flows through the diversion die head, the pressure is stabilized and the temperature is uniform, and the preformed blank is formed, ensuring uniform feeding of the multi-hole cavity in the mold and reducing delamination and weld lines.

[0025] Preferably, the mold is provided with a cooling unit for cooling the internal composite melt and an ejection unit for demolding the formed sliding mold.

[0026] The beneficial effects of this invention are:

[0027] Mold 1 and Mold 2 are arranged opposite each other along the front-to-back direction, and both have two working states: mold closed and mold open. During the switching between mold closed and mold open states, multiple guide rods provide linear guidance. When mold 1 and mold 2 are in the mold closed or mold open position, the mold only maintains contact with one of the anti-friction sleeves; the other idle anti-friction sleeve can rotate 180 degrees, allowing the upper and lower halves of the sleeve's outer wall to interchange positions. Through zoned and alternating force distribution, the friction surfaces of the two anti-friction sleeves can evenly bear the friction load, balancing the wear on the outer surface of the anti-friction sleeve and reducing excessive localized wear. Subsequent maintenance and replacement only require replacing the anti-friction sleeve individually, eliminating the need to replace the entire guide rod, reducing component wear, and extending the overall service life of the guide rod. Attached Figure Description

[0028] Figure 1 This is a top view of the structure of the present invention.

[0029] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0030] Figure 3 This is a top view of the cooling and shaping module and the self-rotating friction reduction mechanism of the present invention.

[0031] Figure 4 This is the invention Figure 3 A magnified structural diagram of point A in the middle.

[0032] Figure 5 This is a top view cross-sectional structural diagram of the guide rod and the self-rotating friction reduction mechanism of the present invention.

[0033] Figure 6 This is the invention Figure 5 A magnified structural diagram at point B in the middle.

[0034] Figure 7 This is a side view of the cooling and shaping module and the self-rotating friction reduction mechanism of the present invention.

[0035] Figure label: 1. Support platform; 2. Injection molding mechanism; 3. Cooling and shaping module; 31. Fixed base one; 32. Fixed base two; 33. Guide rod; 331. Annular groove; 34. Mold one; 35. Mold two; 36. Drive assembly one; 37. Drive assembly two; 4. Diverting die head; 5. Self-rotating friction reduction mechanism; 51. Self-rotating friction reduction assembly; 511. Rotating cylinder; 512. Locking part; 513. Friction reduction sleeve; 514. Transmission unit; 5141. Bevel gear one; 5142. Fixed frame; 5143. Rotating shaft; 5144. One-way bearing; 5145. Bevel gear two; 52. Power assembly; 521. Drive source; 522. Transmission wheel; 523. Transmission belt; 6. Conveying mechanism. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1 to 7 As shown, the slipform molding equipment for power pipes of the present invention includes a support platform 1, an injection molding mechanism 2, a cooling and shaping module 3, a flow-dividing die head 4, a self-rotating friction-reducing mechanism 5, and a conveying mechanism 6. The cooling and shaping module 3 is fixedly connected to the support platform 1 and is used to contain and cool the composite melt formed by heating recycled modified plastic raw materials to form a slipform. The cooling and shaping module 3 includes a first mold 34, a second mold 35, and four guide rods 33. The four guide rods 33 are divided into two sets of guide rods 33 arranged vertically, with two guide rods in each set. The second mold 35 and the first mold 34 are arranged front to back. The second mold 35 is slidably connected to the upper set of guide rods 33, and the first mold 34 is slidably connected to both sets of guide rods 33. When the second mold 35 and the first mold 34 move in opposite directions, they can slide on the two sets of guide rods 33. The flow divider head 4 is fixedly connected to the injection molding mechanism 2. The injection molding mechanism 2 can heat the recycled modified plastic raw material to form a composite melt, and then transport the composite melt into the flow divider head 4.

[0038] The flow divider 4 is located between mold 1 34 and mold 2 35. Mold 1 34 and mold 2 35 are in an open state, that is, both mold 1 34 and mold 2 35 are separated from the flow divider 4, with mold 1 34 located behind the flow divider 4 and mold 2 35 located in front of the flow divider 4. Mold 1 34 and mold 2 35 are in a closed state, that is, mold 1 34 is inserted into the flow divider 4 to seal the end of the flow divider 4, and mold 2 35 is in close contact with the front end of the flow divider 4. When the composite melt is conveyed into mold 2 35 through the flow divider 4, the single composite melt is evenly divided into multiple independent material flows through the flow divider 4, stabilizing the pressure and temperature and preforming the blank, ensuring uniform feeding of the multi-hole cavity in mold 2 35, and reducing delamination and weld lines. The flow divider head 4 is equipped with a temperature control system to prevent the solidified composite melt inside from clogging the flow channels on the flow divider head 4 (the temperature control system is existing technology and will not be described in detail here). The mold 2 35 is equipped with a cooling unit and an ejection unit. The cooling unit can accelerate the cooling and forming speed of the composite melt in the mold 2 35 to form a sliding mold, and the ejection unit can eject the formed sliding mold in the mold 2 35 outward (both the cooling unit and the ejection unit are existing technologies and are not shown in the figure, and will not be described in detail here).

[0039] Six self-rotating wear reduction mechanisms 5 are configured, and the six self-rotating wear reduction mechanisms 5 are respectively set at the positions where mold one 34 and mold two 35 contact the two sets of guide rods 33, thereby replacing the guide rods 33 in contact with mold one 34 and mold two 35. The self-rotating wear reduction mechanism 5 can rotate to exchange the positions of the upper half area and the lower half area of ​​its outer wall, so that the self-rotating wear reduction mechanism 5 can be evenly rubbed when mold one 34 or mold two 35 moves, reducing the wear rate of the self-rotating wear reduction mechanism 5. Moreover, the guide rods 33 do not need to be replaced when replacing them, thus extending the service life of the guide rods 33.

[0040] The conveying mechanism 6 is fixedly installed on the support platform 1 and is used to convey the sliding mold ejected from the mold 2 35 to the next processing station.

[0041] During operation, the cooling and shaping module 3 is activated, driving mold 1 34 forward and inserting it into the flow divider head 4, thereby sealing the rear end of the flow divider head 4. Mold 2 35 is then driven backward to contact the front end of the flow divider head 4 for subsequent material feeding. Mold 2 35 and mold 1 34 are guided by two sets of guide rods 33 during movement, and simultaneously contacted by six self-rotating friction-reducing mechanisms 5. After mold 2 35 and mold 1 34 stop moving, the six self-rotating friction-reducing mechanisms 5 rotate, swapping the positions of the upper and lower halves of their outer walls. Next, the recycled modified plastic raw material is conveyed to the injection molding mechanism 2, where it is heated to form... A composite melt is formed and transported to the flow divider 4. Under the sealing of mold 1 34, the composite melt is diverted through the flow divider 4 and transported to mold 2 35. After the transport is completed, the composite melt inside mold 2 35 is cooled and shaped by the cooling unit to form a sliding mold. After the sliding mold is cooled and shaped, the cooling and shaping module 3 is activated to drive mold 1 34 to move backward and separate from the flow divider 4, and to drive mold 2 35 to move forward and separate from the flow divider 4. Then, the ejection unit inside mold 2 35 is activated to eject the cooled and shaped sliding mold from mold 2 35 to the conveying mechanism 6. Finally, the conveying mechanism 6 is activated to transport the cooled and shaped sliding mold to the next processing station.

[0042] like Figure 1 and Figure 2As shown, the cooling and shaping module 3 also includes a first fixing base 31, a second fixing base 32, a first driving assembly 36, and a second driving assembly 37. The first fixing base 31 is fixedly connected to the rear top of the support platform 1, and the second fixing base 32 is fixedly connected to the front top of the support platform 1. Four guide rods 33 are detachably and fixedly connected between the first fixing base 31 and the second fixing base 32, and the four guide rods 33 are arranged in a rectangular shape. The first fixing base 31 and the second fixing base 32 can be used to fix and support the four guide rods 33. The first driving assembly 36 is fixedly installed on the first fixing base 31 and is fixedly connected to the first mold 34. It is used to drive the first mold 34 to move back and forth, so that the first mold 34 moves forward to insert into the flow divider head 4, or the second mold 35 moves backward to separate from the flow divider head 4. Drive component 2 37 is fixedly installed on the front side of fixed base 2 32, and drive component 2 37 is fixedly connected to mold 2 35. It is used to drive mold 2 35 to move back and forth so that mold 2 35 moves backward to contact the flow divider head 4, or mold 2 35 moves forward to separate from the flow divider head 4.

[0043] During operation, drive assembly 36 is activated to move mold 34 forward and engage with the flow divider head 4, thereby sealing the end of the flow divider head 4. Drive assembly 37 is activated to move mold 35 backward and contact the flow divider head 4, allowing the composite melt passing through the flow divider head 4 to be diverted and transported into mold 35. After injection molding is completed, the cooling unit inside mold 35 is activated to cool and solidify the composite melt inside mold 35 into a sliding mold. During this process, the composite melt inside the flow divider head 4 is under pressure due to the obstruction of mold 34. After the slipform cools and forms, the drive assembly 36 is activated to move the mold 34 backward and separate it from the flow divider head 4, reducing the pressure inside the flow divider head 4 and preventing the composite melt inside the mold 35 from being ejected outward. Then, the drive assembly 37 is activated to move the mold 35 forward and separate it from the flow divider head 4. After the mold 35 moves to the set position, its internal ejection unit is activated, pushing the slipform formed inside the mold 35 to the conveying mechanism 6, which then transports the formed slipform to the next processing station. During the next operation, the temperature control system inside the flow divider head 4 is activated to heat the composite melt inside, causing the solidified composite melt inside to remelt, preventing solidification from clogging the flow channels on the flow divider head 4 and ensuring the normal operation of the flow divider head 4.

[0044] like Figures 1 to 7As shown, the self-rotating wear reduction mechanism 5 includes a self-rotating wear reduction component 51 and a power component 52. Two self-rotating wear reduction components 51 are symmetrically arranged. The power component 52 can drive both self-rotating wear reduction components 51 to rotate, meaning that when one self-rotating wear reduction component 51 rotates, the other remains stationary. In the open mold state, mold one 34 or mold two 35 is in contact with one of the self-rotating wear reduction components 51. In the closed mold state, mold one 34 or mold two 35 is in contact with the other self-rotating wear reduction component 51. In both states, the power component 52 drives the self-rotating wear reduction component 51 that is not in contact with mold one 34 or mold two 35 to rotate 180 degrees, achieving alternating rotation of the two self-rotating wear reduction components 51. This ensures that the self-rotating wear reduction component 51 experiences uniform wear, reducing the wear rate of the self-rotating wear reduction mechanism 5. Furthermore, the guide rod 33 does not need to be replaced during replacement, thus extending the service life of the guide rod 33.

[0045] Continue to refer to Figures 1 to 7 As shown, the self-rotating wear-reducing assembly 51 includes a rotating cylinder 511, a locking part 512, a wear-reducing sleeve 513, and a transmission unit 514. Both the rotating cylinder 511 and the wear-reducing sleeve 513 are sleeved on the guide rod 33. The outer side of the guide rod 33 is provided with an annular groove 331 corresponding to the rotating cylinder 511. The annular groove 331 is located inside the rotating cylinder 511. Multiple locking parts 512 are arranged in a circular pattern and are all threadedly connected to the rotating cylinder 511. The end of each locking part 512 near the central axis of the rotating cylinder 511 is inserted into the annular groove 331. The multiple locking parts 512 can limit the movement of the rotating cylinder 511, preventing it from moving along the axial direction of the guide rod 33. The wear-reducing sleeve 513 is fixedly connected to the rotating cylinder 511 by bolts and nuts. Two friction-reducing sleeves 513 on the same self-rotating friction-reducing mechanism 5 are located between two rotating cylinders 511, and the ends of the two friction-reducing sleeves 513 are in contact with each other, so that mold one 34 or mold two 35 can transition on the two friction-reducing sleeves 513. The transmission unit 514 is fixedly connected to the guide rod 33 and the rotating cylinder 511, and the transmission units 514 on both self-rotating friction-reducing assemblies 51 are connected to the power assembly 52. ​​The power assembly 52 can drive the two transmission units 514 to run, so that the transmission unit 514 in the self-rotating friction-reducing assembly 51 that is not in contact with mold one 34 or mold two 35 can drive the corresponding rotating cylinder 511 to rotate 180 degrees.

[0046] The starting power assembly 52 drives the transmission unit 514 in the two self-rotating friction reduction assemblies 51 to operate. The transmission unit 514 in the self-rotating friction reduction assembly 51 that does not contact mold one 34 or mold two 35 drives the corresponding rotating cylinder 511 to rotate 180 degrees, while the transmission unit 514 in the other self-rotating friction reduction assembly 51 that contacts mold one 34 or mold two 35 will not drive the corresponding rotating cylinder 511 to rotate.

[0047] Continue to refer to Figures 1 to 7 As shown, the transmission unit 514 includes a first bevel gear 5141, a fixed frame 5142, a rotating shaft 5143, a one-way bearing 5144, and a second bevel gear 5145. The first bevel gear 5141 is fixedly connected to the rotating cylinder 511. The fixed frame 5142 is fixedly connected to the guide rod 33 by screws. The rotating shaft 5143 is rotatably connected to the fixed frame 5142. The end of the rotating shaft 5143 near the first bevel gear 5141 is rotatably connected to the second bevel gear 5145 through the one-way bearing 5144, and the second bevel gear 5145 meshes with the first bevel gear 5141. The shaft 5143, via the one-way bearing 5144, has two opposite rotational directions. The one-way bearing 5144 ensures that when the shaft 5143 rotates in one direction, it drives bevel gear 1 5141 and bevel gear 2 5145 to mesh, while rotating in the other direction does not. When the transmission unit 514 within the two self-rotating friction-reducing assemblies 51 is operating, the rotation of the shaft 5143 drives bevel gear 1 5141 and bevel gear 2 5145 to mesh in opposite directions. When the power assembly 52 drives the rotating shafts 5143 in the two transmission units 514 to run synchronously and in the same direction, only one of the rotating shafts 5143 can drive its corresponding bevel gear 1 5141 and bevel gear 2 5145 to mesh and transmit power. The bevel gear 1 5141 and bevel gear 2 5145 corresponding to the other rotating shaft 5143 will not mesh and transmit power, thereby realizing the separate driving of the anti-wear sleeves 513 on the two self-rotating anti-wear assemblies 51.

[0048] Continue to refer to Figures 1 to 7 As shown, the power assembly 52 includes a drive source 521, transmission wheels 522, and a transmission belt 523. The drive source 521 is fixedly mounted on either a first mounting base 31 or a second mounting base 32, and is a servo motor. Three transmission wheels 522 are provided, each fixedly connected to the output shaft of the drive source 521 and the rotating shafts 5143 of the two transmission units 514, respectively. The transmission belt 523 is connected between the three transmission wheels 522. Activating the drive source 521 drives the transmission belt 523 and the three transmission wheels 522, causing the rotating shafts 5143 within the two transmission units 514 to rotate synchronously and in the same direction.

[0049] Working principle: The start drive assembly 36 drives the mold 34 forward to insert into the flow divider head 4, thereby sealing the end of the flow divider head 4. The start drive assembly 37 drives the mold 35 backward to contact the flow divider head 4, thereby putting the mold 34 and the mold 35 into a closed state.

[0050] The recycled modified plastic raw material is transported to the injection molding mechanism 2, where it is heated to form a composite melt. The composite melt is then transported to the flow divider 4, where it is evenly divided into multiple independent streams and transported into the mold 35.

[0051] The composite melt inside the mold 35 is cooled and shaped by the cooling unit inside the mold 2 to form a sliding mold. During this process, the composite melt inside the flow divider 4 is in a pressure-holding state under the obstruction of the mold 1 34.

[0052] After the slip mold cools and forms, the drive assembly 36 is activated to drive the mold 34 backward to separate it from the flow divider head 4, reducing the pressure inside the flow divider head 4 and preventing the composite melt inside the mold 35 from being ejected outward from the flow divider head 4. Then, the drive assembly 37 is activated to drive the mold 35 forward to separate it from the flow divider head 4, so that after the mold 35 moves forward to the set position, the ejection unit inside it is activated. The ejection unit pushes the slip mold formed inside the mold 35 to the conveying mechanism 6, and the slip mold formed by the conveying mechanism 6 is conveyed to the next processing station.

[0053] When working again, the internal temperature control system of the flow divider 4 is activated to heat the internal composite melt, so that the solidified composite melt inside is melted again, in order to avoid the solidification causing blockage of the flow channel on the flow divider 4 and to ensure the normal use of the flow divider 4.

[0054] When mold 1 34 and mold 2 35 are in the closed or open state, they only contact the wear-reducing sleeve 513 on one of the self-rotating wear-reducing components 51 in the same self-rotating wear-reducing mechanism 5. At this time, the drive source 521 is activated to drive the transmission belt 523 and the three transmission wheels 522 to drive the rotating shafts 5143 in the two transmission units 514 to rotate synchronously in the same direction. Through the setting of the one-way bearing 5144 and the rotating shaft 5143, the rotating shaft 5143 in the self-rotating wear-reducing component 51, which does not contact mold 1 34 or mold 2 35, can drive the corresponding bevel gear 1 5141 and bevel gear 2 5145 to mesh and drive, thereby driving the rotating cylinder 511 in the self-rotating wear-reducing component 51 to rotate. When the rotating cylinder 511 rotates, it drives the wear-reducing sleeve 513, which does not contact mold 1 34 or mold 2 35, to rotate 180 degrees, so that the two wear-reducing sleeves 513 in the self-rotating wear-reducing mechanism 5 can be worn evenly.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A slipform molding device for power pipes, comprising an injection molding mechanism (2) for heating recycled modified plastic raw materials to form a composite melt and a cooling and shaping module (3) for shaping the composite melt into a slipform, the cooling and shaping module (3) comprising a second mold (35) and a first mold (34) arranged front and rear, and a plurality of guide rods (33) for limiting and guiding the first mold (34) and the second mold (35), the second mold (35) and the first mold (34), the first mold (34) and the second mold (35) having a closed mold state and a closed mold state, characterized in that, It also includes multiple self-rotating wear reduction mechanisms (5), which are respectively set at the contact parts of mold one (34), mold two (35) and multiple guide rods (33). The self-rotating wear reduction mechanism (5) includes two symmetrically arranged self-rotating wear reduction components (51). Each self-rotating wear reduction component (51) is provided with a wear reduction sleeve (513) sleeved on the guide rod (33). When mold one (34) and mold two (35) are in the mold closed state or the mold open state, mold one (34) or mold two (35) contacts one of the wear reduction sleeves (513) on the same self-rotating wear reduction mechanism (5), while the other wear reduction sleeve (513) rotates 180 degrees so that the upper half area of ​​the outer wall of the wear reduction sleeve (513) is replaced with the lower half area.

2. The slipform forming equipment for power ducts according to claim 1, characterized in that, The self-rotating wear reduction assembly (51) also includes a rotating cylinder (511) rotatably connected to the guide rod (33), and the rotating cylinder (511) is detachably and fixedly connected to the wear reduction sleeve (513).

3. The slipform forming equipment for power ducts according to claim 2, characterized in that, The guide rod (33) is provided with an annular groove (331), and the outer side of the rotating cylinder (511) is threaded with multiple locking parts (512). The ends of the multiple locking parts (512) near the central axis of the rotating cylinder (511) are all inserted into the annular groove (331).

4. The slipform forming equipment for power ducts according to claim 1, characterized in that, The ends of the wear-reducing sleeves (513) on the two self-rotating wear-reducing components (51) are aligned so that mold one (34) or mold two (35) can transition between the two wear-reducing sleeves (513).

5. The slipform forming equipment for power ducts according to claim 3, characterized in that, The self-rotating wear reduction mechanism (5) also includes a power assembly (52) for driving the rotating cylinder (511) to rotate. Each self-rotating wear reduction assembly (51) includes a transmission unit (514) connected to the rotating cylinder (511) and the power assembly (52) for driving the rotating cylinder (511). When the two transmission units (514) run synchronously in the same direction, they can only drive the wear reduction sleeve (513) that does not contact the mold one (34) or the mold two (35) to rotate.

6. The slipform forming equipment for power ducts according to claim 5, characterized in that, The transmission unit (514) includes a first bevel gear (5141), a fixed frame (5142), a rotating shaft (5143), a one-way bearing (5144), and a second bevel gear (5145). The first bevel gear (5141) is fixedly connected to the rotating cylinder (511), the fixed frame (5142) is fixedly connected to the guide rod (33), and the rotating shaft (5143) is rotatably connected to the fixed frame (5142). The rotating shaft (5143) is connected to the guide rod (33) via the one-way bearing (5144). The second bevel gear (5145) is rotatably connected, and the second bevel gear (5145) and the first bevel gear (5141) are meshed together. The shaft (5143) has two opposite directions of rotation. One direction of rotation of the shaft (5143) can drive the second bevel gear (5145) and the first bevel gear (5141) to mesh and transmit power. The other direction of rotation of the shaft (5143) cannot drive the second bevel gear (5145) and the first bevel gear (5141) to mesh and transmit power.

7. The slipform forming equipment for power ducts according to claim 6, characterized in that, The rotating shafts (5143) in the two transmission units (514) drive the bevel gear two (5145) and bevel gear one (5141) to rotate in opposite directions.

8. The slipform forming equipment for power ducts according to claim 7, characterized in that, The power assembly (52) includes a drive source (521), a transmission wheel (522) and a transmission belt (523). The drive source (521) is fixedly mounted on a fixed base one (31) or a fixed base two (32). There are three transmission wheels (522). The three transmission wheels (522) are respectively fixedly connected to the output shaft of the drive source (521) and two rotating shafts (5143). The transmission belt (523) is connected between the three transmission wheels (522).

9. The slipform forming equipment for power ducts according to claim 1, characterized in that, It also includes a flow divider head (4) that is fixedly connected to the injection molding mechanism (2) and located between mold one (34) and mold two (35). In the mold closing state, mold one (34) is inserted into the flow divider head (4), and mold two (35) is in contact with the flow divider head (4).

10. The slipform forming equipment for power ducts according to claim 1, characterized in that, The mold 2 (35) is provided with a cooling unit for cooling the internal composite melt and an ejection unit for demolding the formed sliding mold.

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