CN111468353A - Production line for internal suction and external spraying of pipe and manufacturing method - Google Patents

Abstract

The invention relates to a production line for internal and external spraying of a pipe and a manufacturing method thereof, wherein the production line for internal and external spraying of the pipe comprises a chain rotating assembly, a front pipe heating assembly, a transverse moving assembly, a chain hook transmission assembly, an internal and external spraying assembly, a post-curing heating assembly and a P L C control system, wherein the front pipe heating assembly is arranged on the upper part of the chain rotating assembly, one end of the chain rotating assembly is connected with the transverse moving assembly, a space is arranged between the front pipe heating assembly and the post-curing heating assembly, and the internal and external spraying assembly is arranged in the space.

Description

Production line for internal suction and external spraying of pipe and manufacturing method

Technical Field

The invention relates to the technical field of pipe production and processing, in particular to an internal suction and external spraying production line and a manufacturing method of a pipe.

Background

The spraying plastics inside and outside the steel pipe and the metal pipeline are the updating products of the common plastic steel pipe, not only have the strength and the rigidity of the steel and the plastics, but also have the advantages of no rustiness, no scale, small fluid resistance, impact resistance, abrasion resistance, corrosion resistance, high temperature resistance, good antibacterial and sanitary performance, flexibility and the like, are widely applied to the fields of water supply and drainage, fire fighting, food processing and the like, prevent the traditional steel-plastic steel pipe from rusting and polluting water quality due to corrosion, enable the water quality to reach the sanitary standard and prolong the service life.

The technical defects of the traditional equipment are that the traditional equipment carries out internal spraying and external spraying secondary processing, firstly sprays the interior and then sprays the exterior, when the internal spraying is finished, the temperature of the outer layer of the steel pipe is reduced upwards when the pipe moves to an internal spraying box, particularly in winter, the temperature of the steel pipe is reduced quickly, the adhesion between the steel pipe and plastic is low, and the internal and external adhesion is inconsistent. Secondly, the time for spraying the steel pipe by the internal spraying spray gun is 6-12 m, and the thickness of a plastic layer generated by the contact between the clamp at the end parts of the left spray gun and the right spray gun and the inner wall of the rotating pipe in the moving process of the clamp at the rotating positioning center is uneven, so that the product is unqualified.

The technical scheme has the technical defects that: when the spraying production line is used, the efficiency is low, so that the resource waste is caused, and the product quality is low after the pipe is processed, therefore, the production line and the manufacturing method for spraying inside and outside the pipe are needed, and the technical defects in the prior art are solved.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the invention provides an internal-suction external-spraying production line and a manufacturing method thereof, wherein an internal-suction external-spraying assembly, a pipe front heating assembly, a post-curing heating assembly, a chain rotating assembly and a chain hook transmission assembly are arranged, the chain rotating assembly can simultaneously convey a plurality of steel pipes, the internal-suction external-spraying assembly is convenient for internal-suction coating of the plurality of steel pipes, the steel pipes can be coated with plastics outside the steel pipes, vacuum suction can be adopted in hot-dip galvanized steel pipes, so that the internal suction plastics can be uniformly coated on the inner walls of the steel pipes through centrifugal force, the defects of easy corrosion, short service life and low working efficiency of common composite steel pipes are overcome, the adhesion strength of a plastic coating in the steel pipes and the inner walls of the steel pipes is high, the plastic coating does not fall off or swell when used in an environment of-30 ℃ to 65 ℃, and the, the problems in the background art can be effectively solved.

In order to solve the technical problems, the technical scheme of the production line for internal suction and external spraying of the pipe provided by the invention is as follows:

the utility model provides a spraying production water line outside interior suction of tubular product, includes that heating element, sideslip subassembly, chain before chain runner assembly, tubular product collude drive assembly, interior suction spout subassembly, postcure heating element and P L C total control system outward, heating element set up in before the tubular product chain runner assembly upper portion, chain runner assembly one end with the sideslip subassembly is connected, before the tubular product heating element with be provided with the interval between the postcure heating element, interior suction spout the subassembly set up in the interval, postcure heating element passes the chain colludes drive assembly middle part, P L C total control system and chain runner assembly, tubular product before heating element, sideslip subassembly, chain collude drive assembly, interior suction spout the subassembly outward and the postcure heating element is connected.

Preferably, the inner suction outer spraying assembly comprises a left outer spraying cover, a left induced draft fan, a right outer spraying cover, an inner plastic absorption box and a right outer spraying box, a left outer nozzle is arranged at the upper part of the left outer spraying cover, a left outer spraying box is arranged on one side of the left outer spraying cover, the left outer spraying box is connected with the left outer spraying cover through a left induced air pipeline, the left induced air pipeline extends into the left outer spraying cover, and one side of the left outer spraying box is communicated with the left induced draft fan; the right outer spraying cover one side through right induced air pipeline with the right outer spraying box is connected, and right outer spraying box one side and interior plastic uptake case intercommunication, interior plastic uptake case one side are connected with right induced air fan, the inside right spray booth that is equipped with of right outer spraying cover support.

It is preferred in any one of the above-mentioned schemes that the subassembly is spouted outward in the interior system includes left spraying plastics support and right outer nozzle, left side outer nozzle one end with left induced duct one end intercommunication, the inside left spraying plastics support that is equipped with of left side outer spray cover, left induced duct with left spraying plastics leg joint, right induced duct one end is passed right spraying plastics support with right side outer nozzle is connected.

In any of the above schemes, preferably, the chain rotating assembly includes a front horizontal driving motor, a second transmission shaft, a second bearing block, a first front chain, a first transmission shaft, a first bearing block and a first support frame, a sixth driving wheel is fixedly installed in the middle of the second transmission shaft, an output end of the front horizontal driving motor is connected with the sixth driving wheel through a second front chain, a second driving wheel is arranged at an end of the second transmission shaft, two ends of the second transmission shaft respectively penetrate through the second driving wheel and are rotatably connected with the second bearing block, a first driving wheel is arranged at an end of the first transmission shaft, one end of the first front chain is connected with the second driving wheel, the other end of the first front chain is connected with the first driving wheel, and an end of the first transmission shaft is rotatably connected with the first bearing block.

In any of the above schemes, preferably, the chain rotating assembly includes a first support frame and a second support frame, the bottom of the first bearing seat is connected to the first support frame, and the bottom of the second bearing seat is connected to the second support frame.

In any one of the above aspects, preferably, the first transmission shaft and the second transmission shaft are parallel to each other.

In any of the above schemes, preferably, the first front chain, the first bearing block, the first support frame, the first driving wheel, the second support frame, the second bearing block and the second driving wheel are all provided in two numbers, and are all arranged on two sides of the second front chain.

In any one of the above schemes, preferably, the tubular product front heating assembly comprises a first heating box and a first heat supply box, the first heating box is arranged outside the first front chain, a first heat supply pipeline is arranged inside the first heating box, the first heat supply pipeline is arranged on one side of the first front chain, and one end of the first heat supply pipeline penetrates through the first heating box and is connected with the first heat supply box.

In any of the above schemes, preferably, the traverse moving assembly includes a transmission assembly, a cylinder support frame, an up-down moving cylinder and a first traverse moving plate, one end of the transmission assembly is connected with the cylinder support frame, a pulley is arranged at the bottom of the cylinder support frame, the top of the cylinder support frame is connected with the bottom of the up-down moving cylinder, and the top of the up-down moving cylinder is connected with the bottom of the first traverse moving plate.

In any of the above schemes, preferably, the traverse assembly further includes a second traverse plate and a first powder return groove, the second traverse plate is disposed inside the first traverse plate, and the bottom of the second traverse plate is connected to the first powder return groove.

In any of the above schemes, preferably, the transmission assembly includes a slide rail, a cylinder mounting plate and a front-and-back moving cylinder, the slide rail is disposed on one side of the second support frame, the cylinder mounting plate is disposed on the upper portion of the slide rail, one end of the slide rail penetrates through the middle of the cylinder mounting plate, the pulley forms a sliding connection on the upper portion of the slide rail, the front-and-back moving cylinder is disposed on the upper portion of the cylinder mounting plate, and one end of the front-and-back moving cylinder is connected with the cylinder.

In any of the above schemes, preferably, the chain hook transmission assembly includes a driving assembly, a third transmission shaft, a third driving wheel, a fourth transmission shaft, a hook, a third bearing block and a third support frame, an end of the third transmission shaft is connected with the third driving wheel, an end of the fourth transmission shaft is provided with the fourth driving wheel, the third driving wheel is connected with the fourth driving wheel through a first rear chain, the driving assembly is connected with the fourth transmission shaft, and the hook is arranged on an upper portion of the first rear chain; the third bearing seat is arranged at the end part of the fourth transmission shaft, and the bottom of the third bearing seat is connected with the top of the third support frame.

In any of the above schemes, preferably, the driving assembly includes a second rear chain, a rear horizontal driving motor, a fifth driving wheel and a driving wheel, an output end of the rear horizontal driving motor is connected to the driving wheel, the driving wheel is connected to the fifth driving wheel through the second rear chain, and the fifth driving wheel is disposed on an upper portion of the fourth transmission shaft.

In any of the above aspects, preferably, the third transmission shaft and the fourth transmission shaft are parallel to each other.

In any one of the above schemes, preferably, the third driving wheel, the fourth driving wheel, the first rear chain, the hook, the third bearing seat and the third supporting frame are all provided with two parts, and are all arranged on two sides of the second rear chain.

In any of the above schemes, preferably, the post-curing heating assembly includes a second heating box and a second heat supply pipeline, the second heating box is disposed on one side of the internal suction external spray assembly, and the second heating box penetrates through the middle of the first rear chain; and a second heating box is fixed on one side of the second heating box, one end of a second heating pipeline is connected with one side of the second heating box, and the other end of the second heating pipeline is arranged on one side of the first rear chain.

In any of the above schemes, preferably, the internal suction external spray device comprises an external spray recovery assembly, and the external spray recovery assembly is arranged on one side of the internal suction external spray assembly.

It is preferred in any of the above-mentioned schemes that outer spraying recovery assembly includes that powder case, induced air aspirator, second return the powder groove and spout outward and mould the powder case, return powder case one side with induced air aspirator intercommunication, return the powder case set up in left side outer spray box one side, return powder case one side through the pipeline of breathing in with powder groove intercommunication is returned to the second, and outer spraying is advanced to mould powder case one side and is connected with right draught fan, and outer spraying is advanced to mould powder case and is passed through the pipeline intercommunication with right outer spray cap.

A manufacturing method of the internal and external suction spraying of the pipe adopts the production line of the internal and external suction spraying of the pipe, and comprises the following steps:

firstly, placing a pipe on a first front chain;

secondly, the pipe is conveyed to a first heating box by a first front chain, the heating time is 10-25 minutes, and the surface temperature of the pipe is 200-230 ℃ during internal and external spraying;

thirdly, measuring the temperature of the pipe;

fourthly, spraying plastics on the outside of the pipe through an inner suction and outer spraying assembly, and forming a production method of spraying the inside and the outside of the pipe through suction in a right induced draft fan;

fifthly, the pipe is loaded into a post-curing heating assembly for curing, the curing time is controlled to be 12-18 minutes, the temperature in a curing furnace is 185 +/-2 ℃, and the cured pipe is sequentially unloaded, inspected, marked, packaged and put in storage;

sixthly, when the internal suction and the external spraying are closed, the flow distribution is controlled, and the inner wall or the outer layer of the pipe can be sucked and sprayed on one side for plastic coating.

In any of the above schemes, preferably, the pipe is a metal pipeline, and the metal pipeline is a steel pipe

Compared with the prior art, the invention has the beneficial effects that: the technical defects of easy corrosion, short service life and low working efficiency of the conventional common composite steel pipe are overcome, a plurality of steel pipes can be conveyed simultaneously, and the internal suction of the plurality of steel pipes is realized through the front heating assembly and the internal suction external spraying assembly of the pipe. The invention can realize plastic coating outside the steel pipe and plastic suction inside the steel pipe, has high adhesive strength between the plastic coating inside the steel pipe and the inner wall of the steel pipe, can ensure normal use at the temperature of between 30 ℃ below zero and 65 ℃, can ensure no falling and bulging of the plastic coating, and further improves the working efficiency.

Drawings

The drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

FIG. 1 is a perspective view of a preferred embodiment of an internal suction and external spray production line for tubing in accordance with the present invention;

FIG. 2 is a perspective view of an embodiment of the inside-suction outside-spray production line diagram 1 of the pipe of the present invention with the front and rear curing heating assemblies removed;

FIG. 3 is a perspective view of a front tube heating assembly in the embodiment of FIG. 1 of the inside-suction outside-spray production line diagram of the tube of the present invention;

FIG. 4 is a perspective view of the internal structure of the front heating assembly of the pipe in the embodiment of FIG. 1 of the inside-suction outside-spray production line diagram of the present invention;

FIG. 5 is a perspective view of the production line diagram 1 of the internal and external suction spray of the pipe of the present invention with the external suction spray recovery assembly and the internal and external suction spray assembly removed;

FIG. 6 is a perspective view of the traversing assembly of the embodiment of FIG. 1 of a production line for internal and external suction coating of pipes according to the present invention;

FIG. 7 is a schematic view of the connection of a chain hook transmission assembly and a post-cure heating assembly in the embodiment of FIG. 1 of the inside-suction outside-spray production line diagram of the pipe of the present invention;

FIG. 8 is a perspective view of an embodiment of a post-cure heating assembly of the present invention as shown in FIG. 1 of a production line for internal and external imbibition spraying of tubing;

FIG. 9 is a schematic view of the internal construction of the post-cure heating assembly of the embodiment of FIG. 1 of the inside-out spray production line for pipes of the present invention;

FIG. 10 is a schematic view of the inner and outer spray production lines of the pipe of the present invention illustrating the connection of the outer spray recovery assembly and the inner and outer spray assembly of the embodiment of FIG. 1;

FIG. 11 is a schematic view of the internal suction and external spray assembly of the embodiment shown in FIG. 1 for a production line of internal suction and external spray of a pipe according to the present invention;

the reference numbers in the figures illustrate:

1, a chain rotating component; 101 a first drive shaft; 102 a first bearing housing; 103 a first support frame; 104 a first drive pulley; 105 a second support; 106 a second bearing seat; 107 a second drive shaft; 108 a second front chain; 109 a front horizontal driving motor; 110 a first front chain; 111 a second capstan; 112 a sixth capstan;

2, heating the assembly in front of the pipe; 201 a first heating chamber; 202 a first heat supply box; 203 a first heat supply pipeline;

3, traversing the assembly; 301 sliding rails; 302 cylinder mounting plate; 303 moving the cylinder back and forth; 304 cylinder support frame; 305 a pulley; 306 up and down moving cylinder; 307 a first traverse plate; 308 a first powder returning groove; 309 a second traverse plate;

4, a chain hook transmission component; 401 a first rear chain; 402 hooks; 403 a third drive shaft; 404 a third drive pulley; 405 a fourth drive shaft; 406 a second rear chain; 407 rear horizontal driving motor; 408 a fourth capstan; 409 a third bearing seat; 410 a third support frame; 411 a fifth capstan; 412 a drive wheel;

5, externally spraying a recovery component; 501, returning the powder; 502 an air intake duct; 503 a second powder returning groove; 504 induced draft aspirator; 505 is sprayed into a plastic powder box;

6, sucking the external spraying component inside; 601 a left outer spray box; 602, a left induced draft fan; 603 left draught duct; 604 left outer spray cover; 605 right outer spray cover; 606 left outer nozzle; 607 left plastic-sprayed bracket; 608 right outer spray box; 609 a right draught duct; 610 right plastic-sprayed support; 611 right outer nozzle; a plastic absorption box in 612; 613 a right draught fan;

7 post-curing heating component, 701 second heating box, 702 second heat supply box, 703 second heat supply pipeline and 8P L C master control system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

For better understanding of the above technical solutions, the technical solutions of the present invention will be described in detail below with reference to the drawings and the detailed description of the present invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, an internal-suction external-spraying production line for pipes comprises a chain rotating assembly 1, a pipe front heating assembly 2, a transverse moving assembly 3, a chain hook transmission assembly 4, an internal-suction external-spraying assembly 6, a post-curing heating assembly 7 and a P L C general control system 8, wherein the pipe front heating assembly 2 is arranged on the upper portion of the chain rotating assembly 1, one end of the chain rotating assembly 1 is connected with the transverse moving assembly 3, the P L C general control system 8 is connected with the chain rotating assembly 1, the pipe front heating assembly 2, the transverse moving assembly 3, the chain hook transmission assembly 4, the internal-suction external-spraying assembly 6 and the post-curing heating assembly 7, and when the plastic spraying system is closed, the production line can be used for coating plastics in zinc plating outside steel pipes and metal pipes.

As shown in fig. 5, the chain rotation assembly 1 includes a front horizontal driving motor 109, a second transmission shaft 107, a second bearing seat 106, a first front chain 110, a first transmission shaft 101, a first bearing seat 102 and a first support frame 103, a sixth driving wheel 112 is fixedly installed in the middle of the second transmission shaft 107, an output end of the front horizontal driving motor 109 is connected with the sixth driving wheel 112 fixed in the middle of the second transmission shaft 107 through a second front chain 108, a second driving wheel 111 is disposed at an end of the second transmission shaft 107, two ends of the second transmission shaft 107 respectively penetrate through the second driving wheel 111 and are rotatably connected with the second bearing seat 106, a first driving wheel 104 is disposed at an end of the first transmission shaft 101, one end of the first front chain 110 is connected with the second driving wheel 111, the other end thereof is connected with the first driving wheel 104, an end of the first transmission shaft 101 is rotatably connected with the first bearing seat 102, a bottom of the first bearing seat, the bottom of the second bearing seat 106 is connected with the second support frame 105, the first transmission shaft 101 is parallel to the second transmission shaft 107, and two first front chains 110, two first bearing seats 102, two first support frames 103, two first driving wheels 104, two second support frames 105, two second bearing seats 106 and two second driving wheels 111 are arranged on two sides of the second front chains 108.

When the front horizontal type driving device is used, the output end of the front horizontal type driving motor 109 drives the sixth driving wheel 112 in the middle of the second transmission shaft 107 to rotate through the second front chain 108, and at the moment, the two ends of the second transmission shaft 107 respectively drive the second driving wheel 111 to rotate.

The end of the second transmission shaft 107 is rotatably connected to the second bearing housing 106, and the second support bracket 105 may function to support the second bearing housing 106.

The second driving wheel 111 drives the first transmission shaft 101 and the first driving wheel 104 at the end of the first transmission shaft 101 to rotate through the first front chain 110.

The end of the first transmission shaft 101 is rotatably connected to the first bearing seat 102, and the first support frame 103 can support the first bearing seat 102, so that the end of the pipeline is set on the two first front chains 110 parallel to each other, at this time, the front horizontal driving motor 109 is turned on, and the second transmission shaft 107 drives the first front chains 110 to rotate through the second driving wheel 111, so as to transport the pipeline on the upper portion of the second transmission shaft to the interior of the front pipe heating assembly 2.

As shown in fig. 1 and 2, a gap is arranged between the front heating component 2 and the post-curing heating component 7 of the pipe, the internal suction and external spray component 6 is arranged in the gap, and the post-curing heating component 7 penetrates through the middle part of the chain hook transmission component 4.

As shown in fig. 3 and 4, the pipe front heating assembly 2 includes a first heating box 201 and a first heat supply box 202, the first heating box 201 is disposed outside the first front chain 110, a first heat supply pipeline 203 is disposed inside the first heating box 201, the first heat supply pipeline 203 is disposed on one side of the first front chain 110, and one end of the first heat supply pipeline 203 passes through the first heating box 201 and is connected to the first heat supply box 202; during the use, with pipeline transportation to first heating cabinet 201 inside back, first heat supply cabinet 202 produces the heat, then passes through first heat supply pipeline 203 and transmits to the inside of first heating cabinet 201, heats the pipeline.

As shown in fig. 3-6, the traverse assembly 3 includes a transmission assembly, a cylinder support frame 304, an up-down moving cylinder 306, a first traverse plate 307, a second traverse plate 309 and a first powder return groove 308, one end of the transmission assembly is connected to the cylinder support frame 304, a pulley 305 is disposed at the bottom of the cylinder support frame 304, the top of the cylinder support frame 304 is connected to the bottom of the up-down moving cylinder 306, the top of the up-down moving cylinder 306 is connected to the bottom of the first traverse plate 307, the second traverse plate 309 is disposed inside the first traverse plate 307, the bottom of the second traverse plate 309 is connected to the first powder return groove 308, and the upper surface of the first traverse plate 307 is V-shaped, so as to fix the pipeline and prevent the pipeline from sliding on the upper surface of the.

The transmission assembly comprises a slide rail 301, a cylinder mounting plate 302 and a front-back moving cylinder 303, the slide rail 301 is arranged on one side of the second support frame 105, the cylinder mounting plate 302 is arranged on the upper portion of the slide rail 301, one end of the slide rail 301 penetrates through the middle of the cylinder mounting plate 302, a pulley 305 is in sliding connection with the upper portion of the slide rail 301, the front-back moving cylinder 303 is arranged on the upper portion of the cylinder mounting plate 302, and one end of the front-back moving cylinder 303;

when the pipeline is used, when the pipeline is transmitted to one end of the first heating box 201 through the first front chain 110, the up-down moving cylinder 306 pushes the first traverse plate 307 to move upwards, the back-and-forth moving cylinder 303 pulls the cylinder support frame 304 to enable the pulley 305 at the bottom of the cylinder support frame 304 to slide in the sliding rail 301 to one side close to the first heating box 201, then the pipeline slides to one end of the first traverse plate 307, at the moment, one end of the back-and-forth moving cylinder 303 pushes the cylinder support frame 304 to enable the pulley 305 at the bottom of the cylinder support frame 304 to slide forwards in the sliding rail 301.

As shown in fig. 10 and 11, the inner suction outer spraying assembly 6 includes a left outer spraying cover 604, a left induced draft fan 602, a right outer spraying cover 605, a right outer spraying box 608, a left plastic spraying bracket 607, a right outer nozzle 611 and an inner plastic absorption box 612, the upper portion of the left outer spraying cover 604 is provided with the left outer nozzle 606, one side of the left outer spraying cover 604 is provided with the left outer spraying box 601, the left outer spraying box 601 is connected with the left outer spraying cover 604 through a left induced draft pipeline 603, the left induced draft pipeline 603 extends into the left outer spraying cover 604, and one side of the left outer spraying box 601 is communicated with the left induced draft fan 602; one side of a right outer spraying cover 605 is connected with a right outer spraying box 608 through a right induced air pipeline 609, one side of the right outer spraying box 608 is communicated with an inner plastic absorption box 612, one side of the inner plastic absorption box 612 is connected with a right induced air fan 613, a right plastic spraying support 610 is arranged inside the right outer spraying cover 605, one end of a left outer nozzle 606 is communicated with one end of a left induced air pipeline 603, a left plastic spraying support 607 is arranged inside the left outer spraying cover 604, the left induced air pipeline 603 is connected with the left plastic spraying support 607, and one end of the right induced air pipeline 609 penetrates through the right plastic spraying support 610 to be connected with the right outer nozzle 611.

When the powder spraying device is used, the left induced draft fan 602 is started to ventilate the left induced draft fan 602 towards the inside of the left outer spraying box 601, the left outer spraying box 601 discharges powder into the inside of a pipeline arranged on the upper portion of the first transverse moving plate 307 through the upper portion of the left plastic spraying support 607 through the left induced draft pipeline 603, on the other hand, the powder generated by the left induced draft pipeline 603 is discharged through the left outer nozzle 606, so that powder is sprayed to the pipeline, and for the other end of the pipeline, the powder generated by the right outer spraying box 608 is discharged from the right outer nozzle 611 on the upper portion of the right plastic spraying support 610 through the right induced draft pipeline 609, so that the powder is sprayed to the pipeline.

As shown in fig. 3-7, 10 and 11, the chain hook transmission assembly 4 includes a driving assembly, a third transmission shaft 403, a third driving wheel 404, a fourth transmission shaft 405, a hook 402, a third bearing block 409 and a third support frame 410, wherein an end of the third transmission shaft 403 is connected with the third driving wheel 404, an end of the fourth transmission shaft 405 is provided with the fourth driving wheel 408, the third driving wheel 404 is connected with the fourth driving wheel 408 through a first rear chain 401, the driving assembly is connected with the fourth transmission shaft 405, and the hook 402 is disposed on an upper portion of the first rear chain 401; the third bearing seat 409 is disposed at an end of the fourth transmission shaft 405, and a bottom of the third bearing seat 409 is connected to a top of the third supporting frame 410.

The driving assembly comprises a second rear chain 406, a rear horizontal driving motor 407, a fifth driving wheel 411 and a driving wheel 412, the output end of the rear horizontal driving motor 407 is connected with the driving wheel 412, the driving wheel 412 is connected with the fifth driving wheel 411 through the second rear chain 406, the fifth driving wheel 411 is arranged at the upper part of a fourth transmission shaft 405, the third transmission shaft 403 is parallel to the fourth transmission shaft 405, and the third driving wheel 404, the fourth driving wheel 408, the first rear chain 401, the hook 402, the third bearing seat 409 and the third supporting frame 410 are respectively provided with two and are respectively arranged at two sides of the second rear chain 406;

when the powder spraying pipeline is conveyed to one side of the right outer spraying cover 605 through the first traverse moving plate 307, the hooks 402 on the upper parts of the two parallel first rear chains 401 hook the two ends of the pipeline respectively, and the pipeline is conveyed to the inside of the post-curing heating assembly 7 for heating.

As shown in fig. 3 to 11, the post-curing heating assembly 7 includes a second heating box 701 and a second heat supply pipeline 703, the second heating box 701 is disposed on one side of the internal suction external spraying assembly 6, and the second heating box 701 passes through the middle of the first rear chain 401; a second heating box 702 is fixed to one side of the second heating box 701, one end of a second heating pipeline 703 is connected to one side of the second heating box 702, and the other end is disposed on one side of the first rear chain 401.

During the use, two hooks 402 on the upper portion of first back chain 401 that are parallel to each other hook the both ends of getting the pipeline respectively to with pipeline transportation to the inside of back second heating cabinet 701, then second heating cabinet 702 heats for the pipeline through second heating pipeline 703.

Example two:

as shown in fig. 1 to 11, an inside-suction and outside-spraying production line for pipes is the same as the first embodiment except that: the traversing assembly 3 further comprises a transmission assembly, a cylinder support frame 304, an up-down moving cylinder 306, a first traversing plate 307, a second traversing plate 309 and a first powder return groove 308, one end of the transmission assembly is connected with the cylinder support frame 304, a pulley 305 is arranged at the bottom of the cylinder support frame 304, the top of the cylinder support frame 304 is connected with the bottom of the up-down moving cylinder 306, the top of the up-down moving cylinder 306 is connected with the bottom of the first traversing plate 307, the second traversing plate 309 is arranged inside the first traversing plate 307, and the bottom of the second traversing plate 309 is connected with the first powder return groove 308.

The transmission assembly comprises a sliding rail 301, a cylinder mounting plate 302 and a front-back moving cylinder 303, the sliding rail 301 is arranged on one side of the second support frame 105, the cylinder mounting plate 302 is arranged on the upper portion of the sliding rail 301, one end of the sliding rail 301 penetrates through the middle of the cylinder mounting plate 302, a pulley 305 forms sliding connection on the upper portion of the sliding rail 301, the front-back moving cylinder 303 is arranged on the upper portion of the cylinder mounting plate 302, and one end of the front-back moving cylinder 303 is.

When the powder collection device is used, the second traverse plate 309 can play a role of supporting the end part of a pipeline, one end of the front and rear moving cylinder 303 pushes the cylinder support frame 304, when the pulley 305 at the bottom of the cylinder support frame 304 slides forwards in the sliding rail 301, the pipeline sliding from the end part of the first front chain 110 slides on the upper part of the second traverse plate 309, then the front and rear moving cylinder 303 recovers, one end of the first traverse plate 307 recovers to be flush with one end of the front and rear moving cylinder 303, the use is convenient, the working efficiency is greatly improved, and some produced falling powder slides into the first powder return groove 308, can be conveniently collected and is convenient to recycle.

Example three:

as shown in fig. 1 to 11, an inside-suction and outside-spraying production line for pipes is the same as the first embodiment except that: comprises an external spraying recovery component 5, the external spraying recovery component 5 is arranged on one side of an internal absorbing external spraying component 6, the external spraying recovery component 5 comprises a powder return box 501, an induced air aspirator 504, a second powder return groove 503 and an external spraying plastic powder box 505, one side of the external spraying plastic powder box 505 is connected with a right induced draft fan 613, the external spraying plastic powder box 505 is communicated with a right external spraying cover 605 through a pipeline, one side of the powder return box 501 is communicated with the induced air aspirator 504, the powder return box 501 is arranged on one side of a left external spraying box 601, one side of the powder return box 501 is communicated with the second powder return groove 503 through an air suction pipeline 502, when the powder spraying is finished, when the pipeline moves on the upper part of a first transverse moving plate 307, when powder is sprayed, some fragments generated fall into the second powder return groove 503, and then the induced air suction machine 504 is started to suck the fragments in the second powder return groove 503 into the powder return box 501 through the air suction pipeline 502, so that waste can be conveniently collected, and the effects of environmental protection and saving are achieved.

Example four:

an inside-suction outside-spraying manufacturing method of a pipe adopts energy-saving inside-and-outside spraying pipe production equipment as embodiment 1, embodiment 2 or embodiment 3, and comprises the following steps:

firstly, a pipe is placed on a first front chain 110;

secondly, the first front chain 110 transports the pipe to a first heating box 201, the heating time is 10-25 minutes, and the surface temperature of the pipe is 200-230 ℃ during internal and external spraying;

thirdly, measuring the temperature of the pipe;

fourthly, spraying plastics on the outside of the pipe through the internal suction external spraying assembly 6, and simultaneously spraying plastics on the inside of the pipe through the right draught fan 613 to form a production method of internal suction external spraying of the pipe;

fifthly, the pipe is loaded into a post-curing heating assembly 7 for transportation and is cured, the curing time is controlled to be 12-18 minutes, the temperature in a curing furnace is 185 +/-2 ℃, and the cured pipe is sequentially unloaded, inspected, marked, packaged and put in storage;

sixthly, when the internal suction and the external spraying are closed, the flow distribution is controlled, and the inner wall or the outer layer of the pipe can be sucked and sprayed on one side for plastic coating.

In actual production, the pipe is a metal pipe, for example, the metal pipe may be a steel pipe or the like.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A production line for internal suction and external spraying of a pipe comprises a chain rotating assembly (1), a pipe front heating assembly (2), a transverse moving assembly (3), a chain hook transmission assembly (4), an internal suction and external spraying assembly (6), a post-curing heating assembly (7) and a P L C control system (8), and is characterized in that the pipe front heating assembly (2) is arranged on the upper portion of the chain rotating assembly (1), one end of the chain rotating assembly (1) is connected with the transverse moving assembly (3), a gap is formed between the pipe front heating assembly (2) and the post-curing heating assembly (7), the internal suction and external spraying assembly (6) is arranged in the gap, the post-curing heating assembly (7) penetrates through the middle of the chain hook transmission assembly (4), the P L C total control system (8) is connected with the chain rotating assembly (1), the pipe front heating assembly (2), the transverse moving assembly (3), the chain hook transmission assembly (4), the internal suction and external spraying assembly (6) and the post-curing heating assembly (7).

2. The internal suction and external spraying production line for the pipe according to claim 1, characterized in that: the inner suction outer spraying assembly (6) comprises a left outer spraying cover (604), a left induced draft fan (602), a right outer spraying cover (605), a right outer spraying box (608) and an inner plastic absorption box (612), a left outer nozzle (606) is arranged at the upper part of the left outer spraying cover (604), a left outer spraying box (601) is arranged on one side of the left outer spraying cover (604), the left outer spraying box (601) is connected with the left outer spraying cover (604) through a left induced draft pipeline (603), the left induced draft pipeline (603) extends into the left outer spraying cover (604), and one side of the left outer spraying box (601) is communicated with the left induced draft fan (602); one side of the right outer spraying cover (605) is connected with a right outer spraying box (608) through a right induced air pipeline (609), one side of the right outer spraying box (608) is communicated with an inner plastic suction box (612), one side of the inner plastic suction box (612) is connected with a right induced draft fan (613), and a right plastic spraying bracket (610) is arranged inside the right outer spraying cover (605).

3. The internal suction and external spraying production line for the pipe as claimed in claim 2, characterized in that: the inner suction outer spray component (6) comprises a left plastic spraying support (607) and a right outer spray nozzle (611), one end of the left outer spray nozzle (606) is communicated with one end of a left air guide pipeline (603), the left plastic spraying support (607) is arranged inside the left outer spray cover (604), the left air guide pipeline (603) is connected with the left plastic spraying support (607), and one end of the right air guide pipeline (609) penetrates through the right plastic spraying support (610) to be connected with the right outer spray nozzle (611).

4. The internal suction and external spraying production line for the pipe according to claim 1, characterized in that: the chain rotating assembly (1) comprises a front horizontal type driving motor (109), a second transmission shaft (107), a second bearing seat (106), a first front chain (110), a first transmission shaft (101), a first bearing seat (102) and a first supporting frame (103), a sixth driving wheel (112) is fixedly installed in the middle of the second transmission shaft (107), the output end of the front horizontal type driving motor (109) is connected with the sixth driving wheel (112) through a second front chain (108), the end part of the second transmission shaft (107) is provided with the second driving wheel (111), the two ends of the second transmission shaft (107) respectively penetrate through the second driving wheel (111) and are rotatably connected with the second bearing seat (106), the end part of the first transmission shaft (101) is provided with the first driving wheel (104), one end of the first front chain (110) is connected with the second driving wheel (111), the other end of the first transmission shaft is connected with a first driving wheel (104), and the end part of the first transmission shaft (101) is rotationally connected with a first bearing seat (102).

5. The internal suction and external spraying production line for the pipe as claimed in claim 4, wherein: the chain rotating assembly (1) comprises a first supporting frame (103) and a second supporting frame (105), the bottom of the first bearing seat (102) is connected with the first supporting frame (103), and the bottom of the second bearing seat (106) is connected with the second supporting frame (105).

6. The internal suction and external spraying production line for the pipe as claimed in claim 4, wherein: the first transmission shaft (101) and the second transmission shaft (107) are parallel to each other.

7. The internal suction and external spraying production line for the pipe as claimed in claim 4, wherein: the first front chain (110), the first bearing seat (102), the first support frame (103), the first driving wheel (104), the second support frame (105), the second bearing seat (106) and the second driving wheel (111) are all arranged in two numbers and are arranged on two sides of the second front chain (108).

8. The internal suction and external spraying production line for the pipe as claimed in claim 4, wherein: heating element (2) include first heating cabinet (201) and first heat supply case (202) before tubular product, first heating cabinet (201) set up in first preceding chain (110) outside, first heating cabinet (201) inside is equipped with first heat supply pipeline (203), first heat supply pipeline (203) set up in first preceding chain (110) one side, first heat supply pipeline (203) one end is passed first heating cabinet (201) and is connected with first heat supply case (202).

9. The internal suction and external spraying production line for the pipe as claimed in claim 5, wherein: the transverse moving assembly (3) comprises a transmission assembly, an air cylinder supporting frame (304), an up-down moving air cylinder (306) and a first transverse moving plate (307), one end of the transmission assembly is connected with the air cylinder supporting frame (304), a pulley (305) is arranged at the bottom of the air cylinder supporting frame (304), the top of the air cylinder supporting frame (304) is connected with the bottom of the up-down moving air cylinder (306), and the top of the up-down moving air cylinder (306) is connected with the bottom of the first transverse moving plate (307).

10. A manufacturing method of internal and external suction spraying for pipes, which adopts the production line of internal and external suction spraying for pipes as claimed in any one of claims 1 to 9, and is characterized in that: the method comprises the following steps:

firstly, a pipe is placed on a first front chain (110);

secondly, the pipe is transported to a first heating box (201) by a first front chain (110), the heating time is 10-25 minutes, and the surface temperature of the pipe is 200-;

thirdly, measuring the temperature of the pipe;

fourthly, spraying plastics on the outside of the pipe through an internal suction external spraying assembly (6), and simultaneously forming the internal suction external spraying production method of the pipe through internal suction moulding of a right induced draft fan (613);

fifthly, the pipe is loaded into a post-curing heating assembly (7) for being transported to be cured, the curing time is controlled to be 12-18 minutes, the temperature in a curing furnace is 185 +/-2 ℃, and the cured pipe is sequentially unloaded, inspected, marked, packaged and put in storage;

sixthly, when the internal suction and the external spraying are closed, the flow distribution is controlled, and the inner wall or the outer layer of the pipe can be sucked and sprayed on one side for plastic coating.

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