An automated production line and method for pipe preforms

Abstract

The present application relates to prefabricated pipe production equipment technical field, especially in a kind of pipeline prefabricated piece automation production line and method.The production line includes batching station, conveying device, mould, hoisting equipment;The batching station is equipped with hopper, the conveying device includes mobile platform, and the mould is located on mobile platform;The mould includes base, outer mould, inner mould, the inner mould includes first arc petal, second arc petal, connecting rod mechanism, and first arc petal and second arc petal are moved by connecting rod mechanism to realize inner mould shrinkage or recovery, the hopper is used to inject pouring material into mould, and the lifting mechanism is used to take and place inner mould.Connecting rod mechanism structure of mould is exquisite, and operation steps are simple and convenient, and inner mould structure is lightweight, and mould cost is low, and the flow production of prefabricated pipe is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated pipe production equipment, in particular to a pipeline prefabricated part automatic production line and method. BACKGROUND

[0002] With the gradual acceleration of urbanization process, various city pipeline laying, replacement and repair projects are emerging in large numbers. Pipe jacking method is a non-excavation underground passage construction method, which can well solve many drawbacks caused by traditional excavation construction. Prefabricated resin concrete pipeline is the main building component required for pipe jacking method.

[0003] The existing pipeline is generally formed by pouring. The traditional pipeline pouring mold generally includes an inner mold and an outer mold. The pouring material is filled between the inner mold and the outer mold to form a pipeline product after solidification. However, the traditional mold has the following defects. After the pouring material solidifies, the product is bonded to the mold, causing demolding difficulty. To solve the above problems, a "prefabricated concrete sewage inspection well steel mold" is disclosed in Chinese Patent No. CN 216760264U. The inner mold is divided into first inner mold plates and second inner mold plates, and each first inner mold plate and second inner mold plate is connected to a hydraulic push rod. The inner mold is divided into blocks to realize the shrinkage of the inner mold to facilitate demolding. However, this design has the following defects: it uses multiple hydraulic push rods as the main power source, and requires corresponding circuit and pipeline structure, which is relatively complex, making the cost of the mold too high and difficult to be practically applied. In addition, due to the complexity of the mold, it contains several electrical equipment, which is not conducive to the application of the mold on the continuous automatic production line. SUMMARY

[0004] To overcome the deficiencies in the prior art, the present application provides a pipeline prefabricated part automatic production line and method which is easy to demold, simple in structure and can realize automatic production in a production line.

[0005] To achieve the above purpose, the technical solution adopted by the present application is as follows: a pipeline prefabricated part automatic production line, characterized by comprising a batching station, a conveying device, a mold and a hoisting equipment.

[0006] The batching station is provided with a discharge hopper, the conveying device includes a mobile platform, and the mold is arranged on the mobile platform. The mobile platform drives the mold to be below the discharge hopper and the hoisting equipment.

[0007] The mold comprises a base, an outer mold and an inner mold, the outer mold is arranged on the base, the outer mold comprises a first half body and a second half body which can be disassembled, the inner mold is arranged inside the outer mold, the inner mold comprises a first arc petal, a second arc petal and a connecting rod mechanism, the first arc petal is formed with a notch part between two end faces, the second arc petal is embedded in the notch part of the first arc petal to combine to form a cylindrical inner mold, the connecting rod mechanism comprises a threaded rod, two groups of movable blocks arranged on the threaded rod, a plurality of first connecting rods and a plurality of second connecting rods, the upper and lower parts of the threaded rod are respectively provided with threaded parts with opposite threads, the two groups of movable blocks are arranged on the two threaded parts respectively, and the threaded rod drives the two groups of movable blocks to move close to or away from each other in the positive direction or the reverse direction; one first connecting rod is rotationally connected to each side of one movable block, the two groups of first connecting rods are rotationally connected to the first arc petal and the second arc petal respectively, and the movable block moves to drive the second arc petal to move towards the inside or outside of the first arc petal through the first connecting rod; one second connecting rod is rotationally connected to each side of the second arc petal, and the two groups of second connecting rods are rotationally connected to the first arc petal at positions on both sides of the notch part; the second arc petal moves to drive the notch part of the first arc petal to contract or expand through the second connecting rod.

[0008] The lower hopper is used for injecting pouring material into the mold, and the hoisting equipment is used for taking and placing the inner mold.

[0009] Further, the two end faces of the first arc petal are arranged obliquely, so that the notch part has a structure of being large inside and small outside relative to the first arc petal, and the two end faces of the second arc petal are arranged obliquely, so that the second arc petal has a structure of being large inside and small outside relative to the notch part.

[0010] Further, the inner mold further comprises a telescopic limiting mechanism, the telescopic limiting mechanism is arranged transversely, two ends of the telescopic limiting mechanism are connected to the first arc petal and the second arc petal respectively, and the telescopic limiting mechanism enables the second arc petal to move in parallel along the transverse direction.

[0011] Further, the inner wall of the first arc petal is provided with a first vertical plate extending vertically, the first vertical plate is opposite to the position of the notch part, the inner wall of the second arc petal is provided with a second vertical plate extending vertically, the first connecting rod is rotationally connected to the first vertical plate or the second vertical plate, and the first connecting rod rotates along the vertical plane; the inner wall of the first arc petal on both sides of the notch part is respectively provided with a first horizontal plate, the inner side of the second arc petal is provided with a second horizontal plate, and the two ends of the second connecting rod are respectively rotationally connected to the first horizontal plate and the second horizontal plate, and the second connecting rod rotates along the horizontal plane.

[0012] Further, the positioning top ring is arranged on the top of the outer mold, the positioning top ring is provided with a plurality of limiting rods extending inward, the limiting rods are arranged in a ring array around the axis of the positioning top ring, the end portions of the limiting rods are close to the outer wall of the inner mold, the base is provided with a limiting bottom ring protruding towards the opposite direction, the inner wall of the outer mold is close to the outer edge of the limiting bottom ring, the outer wall of the inner mold is close to the inner edge of the limiting bottom ring, and the positioning top ring and the limiting bottom ring jointly limit the inner mold to keep coaxial with the outer mold.

[0013] Further, the positioning top ring top surface is provided with a first annular surface inclined outward from bottom to top, and the inner mold top is provided with a second annular surface inclined inward from bottom to top, the first annular surface and the second annular surface form an annular feeding port which is large at the top and small at the bottom.

[0014] Further, the hopper includes an outer cone, an inner cone, a rotating frame, and a stirring plate, the outer cone has a large top and a small bottom, the inner cone has a small top and a large bottom, the inner cone is coaxially arranged in the outer cone, and a discharging space is formed between the outer cone and the inner cone, the rotating frame is coaxially installed with the inner cone and rotates around an axis, and the stirring plate is installed on the rotating frame and arranged between the outer cone and the inner cone, and the rotating frame drives the stirring plate to move around in the discharging space.

[0015] Further, the first vibrating mechanism is arranged below the hopper, and the first vibrating mechanism includes a first spring platform, a first vibrator, and a first lifting mechanism, the first vibrator is installed on the first spring platform, and the first lifting mechanism drives the first spring platform to lift or lower the moving platform.

[0016] Further, the second vibrating mechanism is arranged below the moving platform, and the second vibrating mechanism includes a second spring platform, a second lifting mechanism, a third lifting mechanism, a cover, and a second vibrator, the second lifting mechanism drives the second spring platform to lift or lower the moving platform, the cover is arranged above the second spring platform, the third lifting mechanism drives the cover to be inserted into or separated from the upper opening between the outer mold and the inner mold, and the second vibrator is connected to the cover.

[0017] An automatic production method of a pipe prefabricated part, based on the automatic production line of the pipe prefabricated part in any one of the above aspects, characterized in that it comprises the following steps:

[0018] Step one, the raw materials are proportioned in the batching station, the assembled mold is placed on the moving platform, and the moving platform moves to below the hopper;

[0019] Step two, the hopper injects the raw materials between the outer mold and the inner mold, the moving platform moves out and waits until the raw materials are solidified in the mold to form a pipe prefabricated part;

[0020] Step three, rotate the threaded rod to move the two groups of movable blocks in the direction of mutual separation, during the movement of the movable blocks, the first connecting rod drives the second arc petal to move towards the inside of the first arc petal and gradually separate from the notch part; during the movement of the second arc petal, the second connecting rod drives the two end faces of the first arc petal to gather together to make the notch part shrink, and finally complete the shrinkage of the inner mold, which makes the inner mold outer wall separate from the inner wall of the pipe prefabricated part;

[0021] Step four, move the platform to the lower side of the hoisting device, the hoisting device takes out the inner mold, separates the first half and the second half of the outer mold, and takes out the pipe prefabricated part;

[0022] Step five, combine the first half and the second half to form the outer mold, the hoisting device puts the inner mold into the outer mold, rotates the threaded rod to move the two groups of movable blocks in the direction of mutual approach, during the movement of the movable blocks, the first connecting rod drives the second arc petal to move towards the direction of the notch part; during the movement of the second arc petal, the second connecting rod drives the two end faces of the first arc petal to separate from each other to make the notch part expand, and finally make the second arc petal embedded into the notch part to form the inner mold, that is, the mold assembly is completed;

[0023] Step six, return to step one to repeat the production process of the pipe prefabricated part.

[0024] From the above description of the present application, compared with the prior art, the pipe prefabricated part automatic production line and method provided by the present application has the following advantages:

[0025] The inner mold is divided into a first arc petal, a second arc petal and a connecting rod mechanism, only needs to rotate the threaded rod in one direction, and the first connecting rod can pull the second arc petal to move towards the inside or outside of the first arc petal, and during the movement of the second arc petal, the second connecting rod pulls the two end faces of the first arc petal to shrink or expand the notch part, so as to realize the shrinkage or recovery of the outer diameter of the inner mold. The designed connecting rod mechanism has a delicate structure, simple and convenient operation steps, and the inner mold structure is lightweight and easy to hoist and take out.

[0026] The notch part of the first arc petal has an inside large and outside small structure, and the second arc petal has an inside large and outside small structure, which can ensure that the first arc petal expands or shrinks during the process of the second arc petal entering and leaving the notch part, and the first arc petal and the second arc petal do not interfere with each other.

[0027] The outer mold is provided with a positioning top ring, the limiting rod of the positioning top ring extending inward can limit the position of the upper end of the inner mold, the outer wall of the limiting bottom ring on the base positions the outer mold, and the inner wall of the limiting bottom ring positions the position of the lower end of the inner mold. The positioning top ring and the limiting bottom ring jointly limit the inner mold to keep the same coaxial position with the outer mold, thereby ensuring the uniformity of the wall thickness of the pipe prefabricated part after pouring.

[0028] The discharging hopper is provided with a stirring plate which moves around the discharging space between the outer conical cylinder and the inner conical cylinder, efficiently drives the raw materials to be uniformly distributed in the discharging space and accelerates the flow rate, so that the raw materials are relatively uniformly sent downward from the annular discharging port formed at the lower ends of the outer conical cylinder and the inner conical cylinder, and the resin concrete is more suitable for the raw materials with high viscosity and poor fluidity.

[0029] The first vibrating mechanism vibrates the mold in the pouring process to ensure that the mold is filled with the pouring raw materials, and the second vibrating mechanism vibrates the poured mold again to ensure that the raw materials in the mold are compacted and the mixed air is discharged, thereby ensuring the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a whole schematic view of the pipeline prefabricated part automatic production line.

[0031] Figure 2 It is a partial structure schematic view of the pipeline prefabricated part automatic production line.

[0032] Figure 3 It is a mold structure schematic view.

[0033] Figure 4 It is a mold partial structure schematic view.

[0034] Figure 5 It is a mold cross-section structure schematic view.

[0035] Figure 6 It is a discharging hopper structure schematic view.

[0036] Figure 7 It is a discharging hopper internal structure schematic view.

[0037] Correspondence is identified as follows: batching station 1, aggregate proportioning bin group 11, mixing building 12, discharge hopper 13, support plate 131, first support arm 1311, central shaft 1312, guide hole 1313, outer cone cylinder 132, inner cone cylinder 133, rotating frame 134, gear ring 1341, second support arm 1342, poking plate 135, reinforcing rib plate 1351, reinforcing rod 1352, drive motor 136, gear wheel 1361, hopper lifting mechanism 137, fixed mounting plate 1371, guide rod 1372, drive cylinder 1373, conveying device 2, track 21, moving platform 22, mold 3, base 31, shaft column 311, limiting bottom ring 312, outer mold 32, first half 321, second half 322, first lock catch 323, inner mold 33, first arc petal 331, lifting lug 3311, notch portion 3312, first vertical plate 3313, first horizontal plate 3314, second arc petal 332, second vertical plate 3321, second horizontal plate 3322, connecting rod mechanism 333, threaded rod 3331, hexagonal end 33311, threaded portion 33312, movable block 3332, first connecting rod 3333, second connecting rod 3334, second annular face 335, telescopic limiting mechanism 334, sliding groove 3341, sliding rod 3342, positioning top ring 34, second lock catch 341, limiting rod 342, first annular face 343, first vibration mechanism 4, first spring platform 41, first vibrator 42, first lifting mechanism 43, second vibration mechanism 5, second spring platform 51, second lifting mechanism 52, third lifting mechanism 53, cover 54, second vibrator 55, hoisting equipment 6. DETAILED DESCRIPTION

[0038] The application is further described below through specific embodiments.

[0039] Referring to Figures 1 to 7 The pipeline prefabricated part automatic production line shown includes a batching station 1, a conveying device 2, a mold 3, a first vibration mechanism 4, a second vibration mechanism 5, and a hoisting equipment 6.

[0040] The batching station 1 includes an aggregate proportioning bin group 11 and a mixing building 12. The aggregate proportioning bin group 11 proportioned graded aggregate is sent into the mixing building 12, and the mixing building 12 mixes the aggregate with resin and other raw materials and additives to form the raw material required for pouring.

[0041] The mixing building 12 is provided with a lower hopper 13 below the mixing building 12, the lower hopper 13 comprises a support plate 131, an outer conical cylinder 132, an inner conical cylinder 133, a rotating frame 134, a stirring plate 135, a driving motor 136, a hopper lifting mechanism 137, the outer conical cylinder 132 is large at the top and small at the bottom, the inner conical cylinder 133 is small at the top and large at the bottom, the inner conical cylinder 133 is arranged coaxially in the outer conical cylinder 132, a discharging space is formed between the outer conical cylinder 132 and the inner conical cylinder 133, the rotating frame 134 is coaxially installed with the inner conical cylinder 133 and rotates around the axis, the stirring plate 135 is installed on the rotating frame 134 and arranged between the outer conical cylinder 132 and the inner conical cylinder 133, the rotating frame 134 drives the stirring plate 135 to move around in the discharging space, the stirring plate 135 is wide at the top and narrow at the bottom, the inner side of the stirring plate 135 is close to the outer wall of the inner conical cylinder 133, and the outer side of the stirring plate 135 is close to the inner wall of the outer conical cylinder 132, a vertical reinforcing rib plate 1351 is arranged on the rear side of the stirring plate 135 along the moving direction, the reinforcing rib plate 1351 is provided with a reinforcing rod 1352 connected to the rotating frame 134, a feeding port is formed in the middle of the support plate 131, the feeding port is provided with first support arms 1311 arranged in cross, the first support arms 1311 are provided with a central shaft 1312 extending downward at the cross position, the rotating frame 134 is rotatably arranged on the central shaft 1312, the inner conical cylinder 133 is arranged on the central shaft 1312, the outer conical cylinder 132 is installed below the support plate 131, the rotating frame 134 comprises a gear ring 1341, the gear ring 1341 is provided with second support arms 1342 arranged in cross, the second support arms 1342 are provided with shaft holes, the rotating frame is installed on the central shaft 1312 through the shaft holes, the driving motor 136 is arranged on the support plate 131 and is provided with a gear 1361, the gear 1361 is engaged with the gear ring 1341, and the rotating frame 134 is driven to rotate by the driving motor 136. The hopper lifting mechanism 137 comprises a fixed mounting plate 1371, a guide rod 1372 and a driving cylinder 1373, the fixed mounting plate 1371 is fixedly arranged on the mixing building 12, the support plate 131 is provided with guide holes 1313, the guide rod 1372 is arranged on the fixed mounting plate 1371 and extends downward through the guide holes 1313, the driving cylinder 1373 connects the fixed mounting plate 1371 and the support plate 131, and the support plate 131 is driven to move up and down relative to the fixed mounting plate 1371 by the driving cylinder 1373, the support plate 131 is provided with extension portions on the two sides, a plurality of guide holes 1313 are formed in the extension portions, and the driving cylinder 1373 is provided with two groups, and the two groups of driving cylinders 1373 are respectively installed on the two groups of extension portions.

[0042] The conveying device 2 comprises a track 21 and a moving platform 22 conveyed along the track 21, the mold 3 is arranged on the moving platform 22, and the track 21 passes through the mixing building 12, the first vibrating mechanism 4, the second vibrating mechanism 5, and the working position of the hoisting device 6, so that the moving platform 22 can drive the mold 3 to be conveyed between the above-mentioned devices.

[0043] The mold 3 comprises a base 31, an outer mold 32, an inner mold 33 and a positioning top ring 34, the outer mold 32 is arranged on the base 31, the base 31 is provided with a vertical shaft column 311, the outer mold 32 comprises a first half body 321 and a second half body 322, one end of the first half body 321 and the second half body 322 is rotatably connected to the shaft column 311, and the other end of the first half body 321 and the second half body 322 is provided with a first lock buckle 323 for connecting the two. The inner mold 33 is arranged on the inner side of the outer mold 32, the inner mold 33 comprises a first arc petal 331, a second arc petal 332, a connecting rod mechanism 333 and a telescopic limiting mechanism 334, the curvature of the first arc petal 331 is greater than 3π / 2, the first arc petal 331 is further provided with a lifting lug 3311, a notch part 3312 is formed between the two end faces of the first arc petal 331, the second arc petal 332 is embedded in the notch part 3312 of the first arc petal 331 to combine to form a cylindrical inner mold 33, the connecting rod mechanism 333 comprises a threaded rod 3331, two groups of movable blocks 3332 arranged on the threaded rod 3331, a plurality of first connecting rods 3333 and a plurality of second connecting rods 3334, the upper end of the threaded rod 3331 is provided with a hexagonal end 33311, the upper and lower parts of the threaded rod 3331 are respectively provided with threaded parts 33312 with opposite threads, the two groups of movable blocks 3332 are respectively arranged on the two threaded parts 33312, and the threaded rod 3331 drives the two groups of movable blocks 3332 to move close to or away from each other; one first connecting rod 3333 is rotatably connected to the two sides of one movable block 3332, the two groups of first connecting rods 3333 are rotatably connected to the first arc petal 331 and the second arc petal 332 respectively, the movable block 3332 moves to drive the second arc petal 332 to move towards the inside or outside of the first arc petal 331 through the first connecting rod 3333; one second connecting rod 3334 is rotatably connected to the two sides of the second arc petal 332, and the two groups of second connecting rods 3334 are rotatably connected to the positions of the first arc petal 331 on the two sides of the notch part 3312; the second arc petal 332 moves to drive the notch part 3312 of the first arc petal 331 to contract or expand through the second connecting rod 3334. The two end faces of the first arc petal 331 are arranged obliquely, so that the notch part 3312 has a structure of being large on the inside and small on the outside of the first arc petal 331, and the two end faces of the second arc petal 332 are arranged obliquely, so that the second arc petal 332 has a structure of being large on the inside and small on the outside of the notch part 3312. The telescopic limiting mechanism 334 is arranged transversely, the two ends of the telescopic limiting mechanism 334 are connected to the first arc petal 331 and the second arc petal 332 respectively, the telescopic limiting mechanism 334 enables the second arc petal 332 to move in parallel along the transverse direction, the telescopic limiting mechanism 334 comprises a sliding groove 3341 and a sliding rod 3342, the sliding rod 3342 is arranged in the sliding groove 3341 and can only move in the length direction, one end of the sliding groove 3341 is connected to the first arc petal 331, and one end of the sliding rod 3342 is connected to the second arc petal 332.The inner wall of the first arc sector 331 is provided with a first vertical plate 3313 extending vertically, the first vertical plate 3313 is opposite to the position of the notch part 3312, the inner wall of the second arc sector 332 is provided with a second vertical plate 3321 extending vertically, the first connecting rod 3333 is rotationally connected to the first vertical plate 3313 or the second vertical plate 3321, and the first connecting rod 3333 rotates along a vertical plane. The inner wall of the first arc sector 331 on both sides of the notch part 3312 is respectively provided with a first horizontal plate 3314, the inner side of the second arc sector 332 is provided with a second horizontal plate 3322, the two ends of the second connecting rod 3334 are respectively rotationally connected to the first horizontal plate 3314 and the second horizontal plate 3322, and the second connecting rod 3334 rotates along a horizontal plane. The positioning top ring 34 is arranged on the top of the outer mold 32 and connected with the outer mold 32 through the second lock buckle 341, the positioning top ring 34 is provided with a plurality of inwardly extending limiting rods 342, the limiting rods 342 are arranged in an annular array around the axis of the positioning top ring 34, the end of each limiting rod 342 is close to the outer wall of the inner mold 33, the base 31 is provided with a limiting bottom ring 312 protruding towards, the inner wall of the outer mold 32 is close to the outer edge of the limiting bottom ring 312, the outer wall of the inner mold 33 is close to the inner edge of the limiting bottom ring 312, and the positioning top ring 34 and the limiting bottom ring 312 jointly limit the inner mold 33 to keep coaxial with the outer mold 32. The top surface of the positioning top ring 34 is provided with a first annular surface 343 inclined outward from bottom to top, the top of the inner mold 33 is provided with a second annular surface 335 inclined inward from bottom to top, and the first annular surface 343 and the second annular surface 335 form an annular feeding port which is large at the top and small at the bottom.

[0044] The first vibrating mechanism 4 is arranged below the lower hopper 13, the first vibrating mechanism 4 includes a first spring platform 41, a first vibrator 42 and a first lifting mechanism 43, the first vibrator 42 is mounted on the first spring platform 41, and the first lifting mechanism 43 drives the first spring platform 41 to lift or lower, so that the first spring platform 41 lifts or lowers the moving platform 22. The moving platform 22 can drive the mold 3 to the second vibrating mechanism 5, the second vibrating mechanism 5 includes a second spring platform 51, a second lifting mechanism 52, a third lifting mechanism 53, a cover 54 and a second vibrator 55, the second lifting mechanism 52 drives the second spring platform 51 to lift or lower, so that the second spring platform 51 lifts or lowers the moving platform 22, the cover 54 is located above the second spring platform 51, the third lifting mechanism 53 drives the cover 54 to lift or lower, so that the cover 54 is inserted into or separated from the upper opening between the outer mold 32 and the inner mold 33 of the mold 3, and the second vibrator 55 is connected to the cover 54.

[0045] A specific production example is further described in detail as follows:

[0046] An automatic production method of a pipeline prefabricated part, comprising the following steps:

[0047] Step one, the aggregate proportioning bin group 11 proportioned aggregate and sent into the mixing building 12, the mixing building 12 will be mixed with resin and other raw materials and additives to form the required material pouring, at the same time, the assembled mold 3 is placed on the moving platform 22, the moving platform 22 moves the mold 3 to the lower hopper, the moving platform 22 is also above the first vibration mechanism 4, the first lifting mechanism 43 drives the first spring platform 41 to rise to lift the moving platform 22, the first vibrator 42 works, the moving platform 22 and the mold 3 on it are vibrated;

[0048] Step two, the hopper lifting mechanism 137 drives the inner cone cylinder 133 and the outer cone cylinder 132 to descend, so that the annular discharge port formed by the lower end of the inner cone cylinder 133 and the outer cone cylinder 132 is aligned with the annular feeding port on the upper end of the inner mold 33 and the outer mold 32, the mixing building 12 passes the raw material into the discharge space of the lower hopper 13, at the same time, the rotating frame 134 drives the material shifting plate 135 to move around the discharge space, the material shifting plate 135 drives the raw material to be evenly distributed in the discharge space and to speed up its flow rate, so that the raw material is relatively evenly sent downward from the annular discharge port and enters the mold cavity of the mold 3, the mold 3 remains in a vibrating state during the feeding process to ensure that the raw material can fill the mold cavity of the mold 3;

[0049] After the material is injected, the hopper lifting mechanism 137 drives the inner cone cylinder 133 and the outer cone cylinder 132 to rise, the first lifting mechanism 43 drives the first spring platform 41 to descend, the moving platform 22 returns to the track 21 and is sent to the second vibration mechanism 5, the second lifting mechanism 52 drives the second spring platform 51 to rise to lift the moving platform 22, the third lifting mechanism 53 drives the cover 54 to descend to the upper end opening between the outer mold 32 and the inner mold 33 of the mold 3 to close, the second vibrator 55 works, the moving platform 22 and the mold 3 on it are vibrated, the vibration lasts for a period of time, so that the raw material in the mold 3 is compacted and the mixed air is discharged, avoiding the formation of holes in the raw material inside the mold cavity; then the second lifting mechanism 52 drives the second spring platform to descend, the third lifting mechanism drives the cover to rise, the moving platform returns to the track, the moving platform 22 drives the mold 3 to move to the temporary storage position to wait for the raw material in the mold 3 to solidify and form a pipeline prefabricated part;

[0050] Step three, the staff sets the hexagonal end 33311 of the end of the threaded rod 3331 with a tool such as an electric wrench, rotates the threaded rod 3331, and moves the two groups of movable blocks 3332 in the direction of moving away from each other. During the movement of the movable blocks 3332, the first connecting rod 3333 rotates along the vertical plane, the first connecting rod 3333 drives the second arc petal 332 to move towards the inside of the first arc petal 331 and gradually separate from the notch part 3312, and the telescopic limiting mechanism 334 limits the second arc petal 332 to move only in the horizontal direction; during the movement of the second arc petal 332, the second connecting rod 3334 rotates around the horizontal plane, the second connecting rod 3334 drives the two end faces of the first arc petal 331 to gather together to make the notch part 3312 shrink, and finally completes the shrinkage of the inner mold 33. The shrinkage of the inner mold 33 makes the outer wall of the inner mold 33 separate from the inner wall of the pipe prefabricated part.

[0051] Step four, the moving platform 22 moves to the lower side of the hoisting device 6, the hook of the hoisting device 6 hooks the lifting lug 3311 of the first arc petal 331 to lift up and take out the inner mold 33, unlock the second lock buckle 341, remove the positioning top ring 34, unlock the first lock buckle 323, rotate and separate the first half 321 and the second half 322 of the outer mold 32 around the shaft column 311, and the staff takes out the pipe prefabricated part.

[0052] Step five, rotate and combine the first half 321 and the second half 322 around the shaft column 311 and fix them to form the outer mold 32, at this time the lower end of the outer mold 32 is close to the outer periphery of the limiting bottom ring 312, place the positioning top ring 34 on the outer mold 32 and fix it through the second lock buckle 341, the hoisting device 6 places the inner mold 33 into the outer mold 32, the staff sets the hexagonal end 33311 of the end of the threaded rod 3331 with a tool such as an electric wrench, rotates the threaded rod 3331, and moves the two groups of movable blocks 3332 in the direction of moving close to each other. During the movement of the movable blocks 3332, the first connecting rod 3333 drives the second arc petal 332 to move towards the direction of the notch part 3312, and the telescopic limiting mechanism 334 limits the second arc petal 332 to move only in the horizontal direction; during the movement of the second arc petal 332, the second connecting rod 3334 drives the two end faces of the first arc petal 331 to separate from each other to make the notch part 3312 expand, and finally makes the second arc petal 332 embedded into the notch part 3312 to form the inner mold 33. After the expansion of the inner mold 33 is completed, the upper end of the outer wall of the inner mold 33 is limited by the end of the limiting rod 342 of the positioning top ring 34, and the lower end of the outer wall of the inner mold 33 is limited by the inner wall of the limiting bottom ring 312, that is, the inner mold 33 is in the coaxial center position with the outer mold 32, and the assembly of the mold 3 is completed.

[0053] Step six, return to step one to repeat the production process of the pipe prefabricated part.

[0054] The pipeline prefabricated part automatic production line comprises a plurality of moving platforms 22 and a plurality of molds 33, each mold 33 is circulated in the process of the above steps, and continuous production is realized.

[0055] The above is only one specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be deemed to be an infringement of the protection scope of the present application.

Claims

1. An automated production line for prefabricated pipe components, characterized in that: This includes batching stations, conveying devices, molds, and hoisting equipment; The batching station is equipped with a feeding hopper, and the conveying device includes a mobile platform. The mold is placed on the mobile platform, and the mobile platform moves the mold to the area below the feeding hopper and the hoisting equipment. The mold includes a base, an outer mold, and an inner mold. The outer mold is mounted on the base and includes a detachable first half and a second half. The inner mold is located inside the outer mold and includes a first arc petal, a second arc petal, and a linkage mechanism. A notch is formed between the two end faces of the first arc petal. The second arc petal is embedded in the notch of the first arc petal to form a cylindrical inner mold. The linkage mechanism includes a threaded rod, two sets of movable blocks on the threaded rod, several first connecting rods, and several second connecting rods. The upper and lower parts of the threaded rod are respectively provided with threaded portions with opposite threads. The two sets of movable blocks are respectively located on two threaded portions. The forward or reverse rotation of the threaded rod causes the two sets of movable blocks to move closer to or separate from each other. A first connecting rod is rotatably connected to each side of a movable block. The two sets of first connecting rods are rotatably connected to the first arc petal and the second arc petal, respectively. The movement of the movable block causes the second arc petal to move inward or outward from the first arc petal through the first connecting rods. A second connecting rod is rotatably connected to each side of the second arc petal. The two sets of second connecting rods are rotatably connected to the first arc petal at the positions on both sides of the notch. The movement of the second arc lobe causes the notch of the first arc lobe to contract or expand via the second connecting rod; The hopper is used to inject casting material into the mold, and the hoisting equipment is used to pick up and put down the inner mold.

2. The automated production line for prefabricated pipe components according to claim 1, characterized in that: The two ends of the first arc lobe are arranged at an angle, so that the notch is relatively larger on the inside and smaller on the outside than the first arc lobe. The two ends of the second arc lobe are also arranged at an angle, so that the second arc lobe is adapted to the structure of the notch being larger on the inside and smaller on the outside.

3. The automated production line for prefabricated pipe components according to claim 1, characterized in that: The inner mold also includes a telescopic limiting mechanism, which is horizontally positioned. The two ends of the telescopic limiting mechanism are respectively connected to the first arc petal and the second arc petal, and the telescopic limiting mechanism causes the second arc petal to move parallel in the lateral direction.

4. The automated production line for prefabricated pipe components according to claim 1, characterized in that: The inner wall of the first arc-shaped petal is provided with a first vertical plate extending vertically, which is directly opposite the notch. The inner wall of the second arc-shaped petal is provided with a second vertical plate extending vertically. The first connecting rod is rotatably connected to the first or second vertical plate and rotates along the vertical plane. The inner walls of the first arc-shaped petal on both sides of the notch are respectively provided with a first horizontal plate. The inner side of the second arc-shaped petal is provided with a second horizontal plate. The two ends of the second connecting rod are respectively rotatably connected to the first and second horizontal plates and rotate along the horizontal plane.

5. The automated production line for prefabricated pipe components according to claim 1, characterized in that: It also includes a positioning top ring, which is located on the top of the outer mold. The positioning top ring has several inwardly extending limiting rods, which are arranged in a circular array around the axis of the positioning top ring. The ends of the limiting rods are close to the outer wall of the inner mold. The base has opposing protruding limiting bottom rings. The inner wall of the outer mold is close to the outer edge of the limiting bottom ring, and the outer wall of the inner mold is close to the inner edge of the limiting bottom ring. The positioning top ring and the limiting bottom ring together restrict the inner mold to remain in a coaxial position with the outer mold.

6. The automated production line for precast pipe components according to claim 5, characterized in that: The top surface of the positioning top ring is provided with a first annular surface that slopes outward from bottom to top, and the top of the inner mold is provided with a second annular surface that slopes inward from bottom to top. The first annular surface and the second annular surface form an annular feed port that is larger at the top and smaller at the bottom.

7. The automated production line for precast pipe components according to claim 1, characterized in that: The hopper includes an outer cone, an inner cone, a rotating frame, and a material-pushing plate. The outer cone has a structure that is larger at the top and smaller at the bottom, while the inner cone has a structure that is smaller at the top and larger at the bottom. The inner cone is located inside the outer cone and is arranged coaxially. A discharge space is formed between the outer and inner cones. The rotating frame is coaxially mounted with the inner cone and rotates around the axis. The material-pushing plate is mounted on the rotating frame and located between the outer and inner cones. The rotating frame drives the material-pushing plate to move around in the discharge space.

8. The automated production line for prefabricated pipe components according to claim 1, characterized in that: It also includes a first vibration mechanism, which is located below the hopper. The first vibration mechanism includes a first spring platform, a first vibrator, and a first lifting mechanism. The first vibrator is installed on the first spring platform, and the first lifting mechanism drives the first spring platform to rise and fall, so that the first spring platform lifts or lowers the moving platform.

9. The automated production line for prefabricated pipe components according to claim 1, characterized in that: It also includes a second vibration mechanism. The moving platform can drive the mold to the second vibration mechanism. The second vibration mechanism includes a second spring platform, a second lifting mechanism, a third lifting mechanism, a cover, and a second vibrator. The second lifting mechanism drives the second spring platform to rise and fall, so that the second spring platform lifts or lowers the moving platform. The cover is located above the second spring platform. The third lifting mechanism drives the cover to rise and fall, so that the upper end of the cover is placed between the outer mold and the inner mold of the mold, or is separated. The second vibrator is connected to the cover.

10. An automated production method for precast pipe components, based on the automated production line for precast pipe components as described in any one of claims 1-9, characterized in that: Includes the following steps: Step 1: The raw materials are mixed in the batching station, the assembled mold is placed on the moving platform, and then moved to the bottom of the feeding hopper by the moving platform; Step 2: The hopper injects the raw material between the outer and inner molds of the mold, the moving platform moves out and waits for the raw material to solidify and form a pipe preform inside the mold; Step 3: Rotate the threaded rod to move the two sets of movable blocks in the direction of separation. During the movement of the movable blocks, the first connecting rod drives the second arc petal to move towards the inside of the first arc petal and gradually separate from the notch. During the movement of the second arc petal, the second connecting rod drives the two ends of the first arc petal to converge with each other, causing the notch to shrink, and finally completing the shrinkage of the inner mold. The shrinkage of the inner mold causes the outer wall of the inner mold to separate from the inner wall of the pipe precast component. Step 4: The mobile platform is moved to the bottom of the hoisting equipment, the hoisting equipment removes the inner mold, and the first and second halves of the outer mold are separated to remove the precast pipe components; Step 5: Combine the first half and the second half to form the outer mold. The hoisting equipment places the inner mold into the outer mold. Rotate the threaded rod to move the two sets of movable blocks toward each other. During the movement of the movable blocks, the first connecting rod drives the second arc petal to move toward the notch. During the movement of the second arc petal, the second connecting rod drives the two ends of the first arc petal to separate from each other, causing the notch to expand. Finally, the second arc petal is embedded in the notch to form the inner mold, and the mold assembly is completed. Step six: Return to step one and repeat the production process of the precast pipe components.

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