CN110539969A - Automatic paper winding device for protecting anticorrosive coating of end of oil-gas steel pipe - Google Patents
Automatic paper winding device for protecting anticorrosive coating of end of oil-gas steel pipe Download PDFInfo
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- CN110539969A CN110539969A CN201910868827.7A CN201910868827A CN110539969A CN 110539969 A CN110539969 A CN 110539969A CN 201910868827 A CN201910868827 A CN 201910868827A CN 110539969 A CN110539969 A CN 110539969A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 240
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- 238000000576 coating method Methods 0.000 title claims abstract description 29
- 239000000123 paper Substances 0.000 claims abstract description 373
- 230000007246 mechanism Effects 0.000 claims abstract description 208
- 239000002655 kraft paper Substances 0.000 claims abstract description 104
- 238000003825 pressing Methods 0.000 claims abstract description 74
- 238000005520 cutting process Methods 0.000 claims abstract description 52
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 27
- 239000003292 glue Substances 0.000 claims description 42
- 230000009471 action Effects 0.000 claims description 29
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- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 12
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- 230000005484 gravity Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000010073 coating (rubber) Methods 0.000 claims 1
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- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 2
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- 230000002441 reversible effect Effects 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/20—Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
- B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
- B65H2701/11332—Size of webs strip, tape, narrow web
Abstract
the automatic paper winding device for protecting the anti-corrosion coating at the end of the oil-gas steel pipe is provided with a slope conveying support plate, a steel pipe roller bracket which is integrally lifted by a lifting mechanism is arranged below a steel pipe limiting groove at the tail end of the conveying support plate, and the steel pipe is lifted by the steel pipe roller bracket to enable the steel pipe to rotate at a constant speed; an axial moving mechanism at the outer side of the steel pipe shaft end carries a lifting arm assembly and a paper winding system to axially move close to the steel pipe shaft end, and the steel pipe is stopped at the steel pipe opening after the opening is detected by a brake mechanism; a paper winding system consisting of a paper placing mechanism, a paper feeding mechanism, a paper cutting mechanism, a paper pressing mechanism and a gluing system is carried on the lifting arm assembly; after at least one circle of pre-gluing, the paper winding system winds and bonds kraft paper strips guided by the paper feeding and placing mechanism at the pipe orifice of the steel pipe through the rotation of the steel pipe. The invention replaces manpower to finish the technical problem of automatic paper winding, gluing and bonding of the steel pipe orifice, overcomes more energy conservation and consumption reduction, particularly solves the technical problem of poor synchronism of steel pipe rotation and paper winding, and meets the requirement of modern production.
Description
Technical Field
The invention particularly relates to an automatic paper winding device for protecting an anticorrosive coating at the end of an oil-gas steel pipe.
Background
In order to guarantee that the oil and gas conveying pipeline anticorrosive coating can receive effective protection in the transit before the assembly, under the prior art, need artifically brush the round viscose in being close to mouth of pipe department usually, then artifically glue kraft paper along the winding of mouth of pipe spreading layer, just can realize effectual protection to mouth of pipe anticorrosive coating. The actions are completed by manual operation, labor and time are wasted, the wrapping quality of kraft paper wrapping the pipe orifice is not uniform, the uniformity and the attractiveness are affected, and the following technical scheme is provided for the actions.
disclosure of Invention
The technical problems solved by the invention are as follows: the utility model provides an oil gas steel pipe end anticorrosive coating protection is with automatic paper device that twines, solves and improves under the prior art oil gas pipeline mouth of pipe anticorrosive coating protection and twines with the kraft paper and rely on the manpower to accomplish, and is inefficient, and the quality is inhomogeneous, takes a lot of work and wastes time and energy's technical current situation.
The technical scheme adopted by the invention is as follows: oil gas steel pipe end anticorrosive coating protection is with automatic paper device that twines, its characterized in that: the device comprises a slope conveying support plate, a steel pipe roller bracket, an axial moving mechanism, a brake mechanism, a lifting arm assembly and a paper winding system carried on the lifting arm assembly; the conveying support plate inclines downwards and rolls downwards to convey the steel pipe by means of the gravity of the steel pipe; a steel pipe limiting groove is formed at the lowest part of the slope surface of the conveying support plate, a steel pipe roller bracket which is integrally lifted by a lifting mechanism 21 is arranged below the steel pipe limiting groove, and the steel pipe roller bracket lifts the steel pipe and stirs the steel pipe to rotate at a constant speed on the steel pipe roller bracket; an axial moving mechanism is arranged on the outer side of the shaft end of the steel pipe orifice of the steel pipe roller bracket, carries a lifting arm assembly and a paper winding system to axially move close to the shaft end of the steel pipe orifice, and stops at the steel pipe orifice after the axial maneuvering mechanism detects the orifice through a brake mechanism; wherein the lifting arm assembly is provided with a paper winding system; the paper winding system consists of a paper placing mechanism, a paper feeding mechanism, a paper cutting mechanism, a paper pressing mechanism and a gluing system in sequence; after the gluing system finishes at least one circle of pre-gluing along the radial direction of the steel pipe, the kraft paper strips guided by the paper placing mechanism and the paper feeding mechanism are pressed and pasted on the outer side wall of the pipe orifice of the steel pipe by the paper pressing mechanism through the paper pressing roller, and the steel pipe is stirred by the steel pipe roller bracket to rotate to finish the paper winding and pasting action of kraft paper on the pipe orifice of the steel pipe.
on the basis of the technical scheme, the anti-falling lifting uniform-speed rotation of the steel pipe body is realized by adopting a simple structure, preferably: the steel pipe roller bracket is Y-shaped; the Y-shaped steel pipe roller bracket is provided with a Y-shaped fork, the fork is provided with a settling type limiting lifting steel pipe body lower part, and rollers are symmetrically arranged at the fork of the steel pipe roller bracket; the roller is driven by the speed reduction motor I to rotate at a constant speed, and the side wall of the outer circumference of the roller body is in rolling friction tangential contact with the side wall of the outer circumference of the steel pipe body to stir the steel pipe to rotate at a constant speed.
on the basis of the technical scheme, the shutdown of the lifting arm assembly and the paper winding system outside the end of the pipe orifice of the steel pipe is realized according to steel pipes with different lengths for realizing the lifting arm assembly and the paper winding system, and further: the axial moving mechanism comprises a moving bearing platform, a variable-frequency speed regulating motor, a rotary motion-to-linear motion transmission pair and a photoelectric switch I for detecting the position of a pipe orifice at the shaft end of the steel pipe; the movable bearing platform bears the lifting arm assembly and the whole paper winding system to move axially, is driven by a variable-frequency speed-regulating motor and is driven by a rotary motion-to-linear motion transmission pair to realize the whole movement of the platform; further: the movable bearing platform further comprises an electric cabinet 11 of an equipment electric control system moving along with the platform, the electric cabinet 11 comprises a PLC (programmable logic controller), and an input port of the PLC is connected with the photoelectric switch I; the output port of the PLC controller is connected with a frequency converter of the variable-frequency speed-regulating motor to realize the variable-frequency speed-regulating brake control and the parking control of the variable-frequency speed-regulating motor.
on the basis of the technical scheme, in order to realize that the lifting arm assembly and the paper winding system can accurately position the lifting arm assembly and the paper winding system at the end of the pipe orifice of the steel pipe according to the steel pipes with different lengths, and eliminate the parking inertia of the axial moving mechanism 3, the accurate parking is facilitated, and further: the brake mechanism comprises a photoelectric switch I for detecting the position of the pipe orifice at the shaft end of the steel pipe; the photoelectric switch I is fixedly mounted at the front end of the movable bearing platform by relying on the movable bearing platform of the axial moving mechanism; the photoelectric switch I consists of a first photoelectric switch and a second photoelectric switch; the first photoelectric switch triggers the variable-frequency speed-regulating motor of the movable bearing platform to brake; the second photoelectric switch triggers the variable-frequency speed-regulating motor of the movable bearing platform to stop; and when the movable bearing platform is stopped, the detection position of the second photoelectric switch is aligned with the shaft end of the pipe orifice of the steel pipe, and the paper winding system carried by the movable bearing platform is arranged over the pipe orifice.
On the basis of the technical scheme, the method further comprises the following steps: the lifting arm assembly comprises an upright post and a cross beam which can vertically lift up and down on the upright post; the cross beam is driven to lift by a self-locking type traveling cylinder fixedly installed on the upright post, the lifting arm assembly is provided with a sensor for capturing the highest point of the pipe diameter, and the sensor takes a paper pressing mechanism arranged right above the highest point of the steel pipe as a support for setting a detection point; wherein the crossbeam is provided with a paper winding system, and a paper pressing mechanism of the paper winding system is fixedly arranged in the middle right above the steel pipe roller bracket.
on the basis of the technical scheme, in order to prevent the paper placing mechanism 6 which passively places paper from causing the kraft paper reel 62 to excessively place paper due to the inertia that the driven shaft cannot stop suddenly in the operation process, further: the paper placing mechanism is provided with a driven paper shaft; the driven paper shaft is coaxially provided with a kraft paper reel; and the kraft paper reel is provided with a paper placing brake mechanism; the paper placing brake mechanism is provided with a paper placing brake cylinder, and the paper placing brake cylinder realizes paper placing brake of the kraft paper reel in a mode of pressing the shaft end at the back side of the driven shaft; on the basis of the technical scheme, in order to realize the paper shortage alarm, the method further comprises the following steps: the mounting bracket fixed mounting of driven paper axle can carry out the photoelectric switch II that lacks paper and report to the police, and the input port of PLC controller is connected to photoelectric switch II, and the output port of PLC controller connects the alarm that lacks paper.
on the basis of the technical scheme, for realizing stable and continuous paper feeding and facilitating manual paper pre-feeding, the friction resistance of the kraft paper is reduced when the follow-up speed reducing motor II is stopped and automatically winds the paper: the paper feeding mechanism 7 is in sliding friction contact with and clamps kraft paper strips by a pair of rubber wheel pairs arranged up and down, and conveys the kraft paper strips; the rubber wheel of the upper part is an active rubber wheel driven by a speed reducing motor II, the rubber wheel of the lower part is a passive rubber wheel which is pushed by a cylinder I to stretch and displace up and down, and the passive rubber wheel resets and backs off kraft paper when the speed reducing motor II of the paper feeding mechanism does not work so as to reduce the advancing resistance of the kraft paper.
On the basis of the technical scheme, the kraft paper is automatically cut by a simple structure, and the method further comprises the following steps: the paper cutting mechanism comprises a paper feeding guide groove which is obliquely and downwards arranged; the paper feeding guide groove is provided with a paper cutting cutter, the paper cutting cutter is driven by a cylinder II to move up and down, and kraft paper strips conveyed in the paper feeding guide groove are cut off in a mode that a knife switch is switched off vertically downwards; the bottom of the paper feeding guide groove of the paper cutting mechanism is provided with a color recognition sensor, the color recognition sensor is connected with an input port of a PLC (programmable logic controller), and an output port of the PLC is connected with a trigger paper cutting mechanism or a paper pressing mechanism to act.
On the basis of the technical scheme, the kraft paper is realized through a simpler structure to perform the auxiliary bonding action of the pressure welding of the steel pipe orifice, and further: the paper pressing mechanism comprises a paper pressing roller and a driving cylinder III, wherein the paper pressing roller applies downward pressure to the kraft paper and the steel pipe, and the driving cylinder III drives the paper pressing roller to stretch and displace up and down; a piston rod of a driving cylinder III of the paper pressing roller is coaxially provided with a pressurizing spring; the pressurizing spring is used for compensating roundness floating errors of the steel pipe when the paper pressing roller applies downward pressure to the kraft paper and the steel pipe.
On the basis of the technical scheme, the gluing system further comprises a pressure barrel, a glue feeding pipeline, a glue dispensing valve and a stainless steel needle-shaped glue nozzle; the pressure barrel is provided with a pressure sensor which is used for providing a glue shortage alarm for the glue filled in the pressure barrel.
Compared with the prior art, the invention has the advantages that:
1. the invention realizes the automatic winding function of using kraft paper to replace manpower for protecting the anticorrosive coating of the pipe orifice of the oil and gas conveying pipeline, and realizes automatic production; the harmful effects of diffusion and release of harmful gases in industrial gluing on the health of human bodies are eliminated; the wrapping quality of the kraft paper wrapping pipe orifice wrapping paper is uniform, neat, beautiful and flat;
2. The anti-falling device adopts the rollers on the Y-shaped steel pipe roller bracket driven by the speed reduction motor I to stir the steel pipe body so as to realize the anti-falling uniform-speed rotation of the steel pipe body, and has simple structure and easy realization; particularly, a sedimentation type limiting rolling mode is adopted at the Y-shaped bifurcation, so that the anti-falling effect of the rotation of the steel pipe is excellent; moreover, the steel pipe can be transferred by adopting the surface conveying support plate with the gradient of less than or equal to 2 degrees, and the surface conveying support plate and the lifting mechanism are used for lifting together, so that the step of lifting the steel pipe is omitted, the steel pipe naturally rolls in place by means of gravity before carrying, and the steel pipe conveying support plate is economical and practical;
3. When the automatic paper winding device is applied specifically, the axial moving mechanism with the maximum moving distance of 3000mm cooperates with the double photoelectric switch I and the brake mechanism to realize the automatic identification function of the automatic paper winding device aiming at the pipe heads at the shaft ends of the steel pipes with different lengths; the lifting arm assembly cooperates with the self-locking type traveling cylinder to realize the upper cross beam of the upright column, and the function of automatically capturing and identifying the highest point of the pipe orifices of steel pipes with different diameters can be met through the combined action of the sensors for capturing the highest point of the pipe heads; therefore, the invention adopts the axial moving mechanism to cooperate with the lifting arm assembly mechanism to realize the adaptive positioning identification of the steel pipes with different pipe diameters and different lengths, and has simple structure, accurate positioning and excellent universality;
4. In the paper winding system, only the paper penetrating work of the kraft paper head is manually finished, and the rest work is automatically finished; after one circle of pre-glue is pre-coated, the paper pressing roller moves downwards in place to press paper, and the paper winding system realizes the fixed-length winding and bonding of paper heads through a delay control function by the aid of a speed reducing motor I and a speed reducing motor II which rotate at synchronous linear speeds; then the speed reducing motor II is stopped, the paper placing brake mechanism brakes the paper tray, and a driven rubber wheel 73 in the paper feeding mechanism resets and retracts to reduce the friction resistance; only through the active rotation of the steel pipe, the kraft paper is passively dragged to be placed, and the subsequent automatic paper winding and sticking operation of the kraft paper is realized; on one hand, energy is saved, consumption is reduced, and on the other hand, the technical difficulty of paper winding unevenness caused by asynchronous influence of the speed reducing motors II and I is eliminated; the invention has simple structure, adopts effective combination of conventional parts to replace manpower, creatively solves the technical problem of protective automatic paper winding of the steel pipe orifice, realizes automatic production and meets the requirement of mechanical unmanned modern production.
Drawings
FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention;
FIG. 2 is an enlarged detail view of the roller bracket of the steel pipe in accordance with the embodiment of FIG. 1;
FIG. 3 is a partially enlarged perspective view of the axial translation mechanism and lift arm assembly in position;
FIG. 4 is a schematic diagram of the principle of transmission displacement of a rack-and-pinion transmission pair of the mobile carrier platform;
FIG. 5 is an enlarged detail structure diagram of the structure composition of the paper winding system and the working principle of paper winding;
FIG. 6 is a schematic diagram of the working principle and structure of a paper-releasing brake mechanism of a kraft paper reel in the paper-releasing mechanism;
FIG. 7 is an enlarged detail schematic view of the paper pressing mechanism and the glue applying system;
FIG. 8 is a schematic structural diagram of an application embodiment of an electric control box of an electric control system and an axial moving mechanism related to a braking mechanism two-position photoelectric switch I;
FIG. 9 is a control logic point diagram of a PLC controller corresponding to a ladder diagram of a control program in the specification;
FIG. 10 is a process flow diagram of the PLC controller completing a periodic control process;
FIG. 11 is a schematic diagram of a motor-forward/reverse rotation control of a reduction motor II (stepping motor) by pulse direction;
FIG. 12 is a circuit diagram of a reduction motor II (stepping motor) for controlling the forward and reverse rotation of the motor by adjusting the connection of the stepping motor;
FIG. 13 is a control circuit of a PLC controller for controlling forward and reverse rotation of a stepping motor of a paper feeding mechanism;
fig. 14-19 are ladder diagrams of the control program of the PLC controller of the present invention.
Detailed Description
Specific embodiments of the present invention are described below with reference to fig. 1-13.
The automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe (as shown in figure 1) comprises a slope conveying support plate 1, a steel pipe roller bracket 2, an axial moving mechanism 3, a brake mechanism 4, a lifting arm assembly 5 and a paper winding system carried on the lifting arm assembly 5. Specifically, as shown in the embodiment of fig. 1, a set of axial moving mechanism 3, a set of brake mechanism 4, a set of lifting arm assembly 5 and a set of paper winding system are respectively arranged on the left and right symmetrical outer sides of the steel pipe roller bracket 2 of the conveying carrier plate 1, and the two sets of systems operate simultaneously or independently. Wherein, for practicing thrift the energy consumption, utilize gravity to convey the steel pipe, save and set up huge hoisting machine and construct: the conveying carrier plate 1 inclines downwards and rolls downwards to convey the steel pipe by means of the gravity of the steel pipe; wherein, the ratio of the base height and the base width of the downward-inclined gradient coefficient of the conveying carrier plate 1 is less than or equal to 1:6000, so as to satisfy the requirements of phi 400-. When the steel pipe rolls in place, in order to limit the steel pipe to continue rolling: the lowest part of the slope surface of the conveying carrier plate 1 is provided with a steel pipe limiting groove (such as a notch or a groove limiting and blocking steel pipe): and a steel pipe roller bracket 2 which is integrally lifted by a lifting mechanism 21 is arranged below the steel pipe limiting groove, and the steel pipe roller bracket 2 lifts the steel pipe and stirs the steel pipe to rotate at a constant speed. Specifically, the lifting mechanism 21 is realized by pneumatic lifting or hydraulic lifting, and preferably by cylinder lifting. An axial moving mechanism 3 is arranged at the outer side of the steel pipe orifice shaft end of the steel pipe roller bracket 2. It should be noted that: the axial moving mechanism is used for carrying out adaptive accurate positioning parking on the axial moving mechanism aiming at different long and short steel pipes. Namely, the axial moving mechanism 3 moves axially close to the axial end of the pipe orifice of the steel pipe, and the steel pipe is stopped by the brake mechanism 4 after the axial end of the pipe orifice is detected; the lift arm assembly 5 carries a paper winding system. The paper winding system is composed of a paper placing mechanism 6, a paper feeding mechanism 7, a paper cutting mechanism 8, a paper pressing mechanism 9 and a gluing system 10 in sequence; wherein, the paper placing mechanism 6 passively places paper; the paper feeding mechanism 7 firstly actively and then passively feeds paper, and the paper cutting mechanism cuts off kraft paper strips; the paper pressing mechanism 9 presses and bonds kraft paper through the paper pressing roller 91. After the gluing system 10 finishes at least one circle of pre-gluing along the radial direction of the steel pipe, the paper pressing mechanism 9 presses and attaches the kraft paper strips guided by the paper placing mechanism 6 and the paper feeding mechanism 7 to the outer side wall of the pipe orifice of the steel pipe through the paper pressing roller 91, and the steel pipe is shifted by the steel pipe roller bracket 2 to rotate so as to finish the paper winding and adhering action of the kraft paper at the pipe orifice of the steel pipe.
On the basis of the embodiment, the anti-falling lifting support for the steel pipe body is realized by adopting a simple structure to rotate at a constant speed, preferably: (as shown in fig. 2) the steel pipe roller bracket 2 is Y-shaped; the whole Y-shaped steel pipe roller bracket 2 is lifted by a lifting mechanism 21 (such as a lifting cylinder). And the fork of the Y-shaped steel pipe roller bracket 2 bracket body is settled to limit and lift the lower part of the steel pipe body, for example, at least one quarter of the pipe body of the longitudinal section of the steel pipe is settled and limited at the inner side of the Y-shaped fork body. And for realizing the uniform rotation of the steel pipe on the lifting rotation station: rollers 22 are symmetrically arranged at the bifurcations of the steel pipe roller bracket 2; preferably, in order to save energy and reduce consumption, a group of rollers 22 symmetrical at the bifurcation part consists of a driving roller and a driven roller which are driven by a speed reducing motor I23 to rotate at a constant speed; and the side wall of the outer circumference of the wheel body of the roller 22 is in rolling friction tangential contact with the side wall of the outer circumference of the tube body to stir and rotate.
on the basis of the embodiment, the shutdown of the lifting arm assembly and the paper winding system outside the shaft end of the pipe orifice of the steel pipe is realized according to the steel pipes with different lengths for realizing the lifting arm assembly and the paper winding system: the axial moving mechanism 3 comprises a moving bearing platform 31, a variable frequency speed regulating motor 32, a rotary motion-to-linear motion transmission pair 33 and a photoelectric switch I34 for detecting the position of the pipe orifice at the shaft end of the steel pipe. Wherein, the movable carrying platform 31 (shown in fig. 3) carries the lifting arm assembly 5 and the whole paper winding system to move axially. The movable bearing platform 31 is also provided with a pressure barrel 1002 of a gluing system moving along with the platform and an electric control box 11 matched with the electric control system. The power source of the movable bearing platform is a variable-frequency speed regulating motor 32, the variable-frequency speed regulating motor 32 is vertically arranged as shown in fig. 4, and the transverse movement of the platform is realized through a gear-rack transmission pair.
On the basis of the above embodiment, in order to realize that the mobile bearing platform 31 accurately parks at the shaft end with a fixed distance according to different pipe lengths and eliminating parking inertia: (as shown in the installation mode of fig. 2 and 8), the brake mechanism 4 comprises a photoelectric switch I34 consisting of a first photoelectric switch 341 and a second photoelectric switch 342; the first photoelectric switch 341 triggers the variable-frequency speed-regulating motor 32 of the movable bearing platform 31 to brake; the second photoelectric switch 342 triggers the variable-frequency speed-regulating motor 32 of the movable bearing platform 31 to stop; the detection position when the second photoelectric switch 342 triggers the parking is aligned with the end of the steel pipe orifice, and the paper winding system carried by the movable bearing platform 31 is arranged over the orifice. Specifically, the first photoelectric switch 341 is connected to a signal input port of the PLC controller, and when the transmitting end of the first photoelectric switch 341 is blocked, the frequency converter of the variable frequency speed control motor 32 is triggered to perform variable frequency speed control, so that the platform operates at a reduced speed first; the second photoelectric switch 342 is connected to a signal input port of the PLC controller, and when the transmitting end of the second photoelectric switch 342 is shielded, the variable-frequency adjustable-speed motor 32 is triggered to stop. The rotary motion-to-linear motion transmission pair 33 comprises a screw nut transmission pair and a gear rack transmission pair. And when the photoelectric switch I34 and the second photoelectric switch 342 trigger the platform to stop, the paper pressing mechanism of the paper winding system is just right above the top point of the pipe orifice.
in addition, the electric cabinet 11 included in the movable bearing platform 31 and the PLC controller included in the electric cabinet 11, wherein an input port of the PLC controller is connected with the two-position detection photoelectric switch i 34; the output ports of the PLC controller are respectively a pair of strain frequency speed regulation motor 32 frequency converter speed reduction control and contactor or relay stop control. The functions of speed reduction and shutdown control of the variable-frequency speed-regulating motor 32 are realized by applying the trigger control mode of the conventional variable-frequency speed-regulating motor 32 in the prior art.
On the basis of the above embodiment, further: the lifting arm assembly 5 comprises a vertical column 51 and a cross beam 52 which can vertically lift up and down on the vertical column 51; specifically, the upright 51 is vertically and fixedly connected with the movable bearing platform 31; the top end of the upright post 51 is inversely provided with a self-locking type floating cylinder 53, the tail end of a cylinder piston rod is vertically and fixedly connected with a cross beam 52, namely, the cross beam 52 is driven to lift by the self-locking type floating cylinder 53. When the program is set, the descending triggering action of the self-locking type floating air cylinder 53 is triggered by the parking in-place signal of the axial moving mechanism. And then, in order to realize that the self-locking type traveling cylinder 53 and the beam 52 are suitable for steel pipes with different diameters, the highest position of the top point of the steel pipe is always kept at a fixed height for recognizing and stopping: the lifting arm assembly 5 is provided with a sensor 54 for capturing the highest point of the pipe diameter, and the sensor 54 (shown in fig. 5) is supported by a paper pressing mechanism 9 arranged right above the highest point of the steel pipe vertex and used for capturing the detection point of the sensor for capturing the highest point of different pipe diameters. Specifically, the sensor 54 is fixedly mounted vertically downward on the outside of the platen roller bracket. The sensor 54 works on the principle that: the sensor 54 may be a distance sensor, set to a height (h); when the receiving end of the distance sensor receives a set height (h) signal, the self-locking type moving air cylinder 53 is triggered by the PLC to stop descending and self-lock, the cross beam 51 does not descend any more, and accurate positioning and capturing of pipe orifices of steel pipes with different diameters are completed.
and (3) finishing the automatic paper winding action of the paper winding system: on the basis of the above embodiment, the paper feeding mechanism 6 has the driven paper shaft 61; a kraft paper reel 62 is coaxially arranged on the driven paper shaft 61; the kraft paper reel 62 is provided with a paper placing brake mechanism 63, the paper placing brake mechanism 63 is provided with a paper placing brake cylinder 631, and the paper placing brake cylinder 631 presses the back side shaft end of the driven paper shaft 61 to realize paper placing brake of the kraft paper reel 62. The paper-feeding brake 63 is provided to prevent paper from being excessively fed from the kraft paper reel 62 due to inertia of the passive paper-feeding mechanism, i.e., the paper-feeding brake 63 is used to eliminate the influence of the excessive paper-feeding. Specifically, the PLC controller triggers the paper discharge brake 63 to operate when receiving a signal that the paper feeding mechanism stops operating. Wherein, the contactor of gear motor II is connected with an input port of PLC controller, and an output port of PLC controller is connected with the input port of putting paper brake mechanism 63 and putting paper brake cylinder solenoid valve. The working principle is as follows: when the PLC controller receives a breaking signal of the contactor of the reduction motor ii driving the driving rubber wheel 71 to rotate in the paper feeding mechanism 7, the PLC controller outputs a pulse to control the solenoid valve of the paper discharging braking cylinder 631 of the paper discharging braking mechanism 63 to perform an extending operation on the piston rod. (as shown in FIG. 6) the solenoid valve is preferably a two-position three-way solenoid valve, and the paper release brake cylinder 631 is preferably a double acting cylinder; and the tail end of the piston rod of the paper-releasing brake cylinder 631 is vertically and fixedly connected with a rubber block for braking, and the rubber block for braking is used for tightly abutting against the center of the circle center of the shaft end of the driven paper shaft 61 at the back side of the kraft paper reel 62 to realize the braking function of the paper-releasing brake mechanism 63.
On the basis of the above embodiment, further, in order to realize the automatic paper shortage warning function of the kraft paper reel 62 on the paper placing mechanism 6: and a mounting frame of the driven paper shaft 61 is fixedly provided with a photoelectric switch II for paper shortage alarm, and the photoelectric switch II is preferably a correlation type photoelectric switch. The photoelectric switch II is connected with an input port of the PLC controller, and an output port of the PLC controller is connected with the paper shortage alarm. Specifically, the horizontal detection emitting end of the photoelectric switch II is fixedly installed by taking the cross beam 52 as a support and is tangent to the highest point of the reel of the kraft paper reel 62, and the receiving end of the photoelectric switch II is fixedly installed by taking the reel bracket as a support. The working principle is as follows: when the kraft paper reel 62 has paper, the signal of the transmitting end of the photoelectric switch II is shielded, the output end of the PLC controller outputs low level, the alarm controls the switch to be normally open and not to act, and the alarm does not give an alarm; when no paper exists, a signal of a transmitting end of the photoelectric switch II is received by a receiving end, the PLC outputs a high level, and the alarm controls the switch to be switched to a conducting state from a normally open state to give an alarm.
In the above embodiment, (as shown in fig. 5) the paper feeding mechanism 7 is composed of a pair of rubber wheels disposed up and down, and is in sliding friction contact with and conveys kraft paper strips by sandwiching the kraft paper strips; the upper driving rubber wheel 71 is driven by a speed reducing motor II, the lower driven rubber wheel 73 is pushed by the air cylinder I72 to stretch and displace up and down, and the driven rubber wheel 73 resets and retracts to release kraft paper when the speed reducing motor II of the paper feeding mechanism 7 does not work so as to reduce the advancing resistance of the kraft paper. It should be noted that, the reducing motor ii drives the paper feeding winding initial stage, and the paper head is adhered to the reducing motor i by the delay control function of the time relay and synchronous delay operation of the reducing motor i. After the synchronous delay timing is over, the speed reducing motor II stops but is not locked, and the driven rubber wheel 73 is controlled by the air cylinder I72 to reset and retreat to reduce the paper strip transmission friction resistance; the steel pipe is pulled to rotate only by the speed reducing motor I to realize subsequent paper winding; and when the steel pipe body rotates for a circle along the radial direction, the color recognition sensor recognizes the color of the kraft paper, and the paper cutting mechanism is triggered to operate. The working process of firstly driving and then passively winding and bonding paper is beneficial to eliminating the problem of unsmooth automatic paper winding and bonding caused by the asynchronism of the speed reducing motors I and II.
On the basis of the above embodiment, in order to realize the automatic cutting of the kraft paper through a simple structure, further: the paper cutting mechanism 8 includes a paper feed guide groove 81 provided obliquely downward; as shown in fig. 5 and 7, a color recognition sensor 84 is provided at the bottom of the paper feeding guide groove 81, a paper cutting knife 82 is provided on the paper feeding guide groove 81, and the paper cutting knife 82 is driven by a cylinder ii 83 to move up and down to cut off kraft paper slip conveyed in the paper feeding guide groove 81 by a mode that a knife switch is vertically switched off downwards. The color recognition sensor 84 is connected with an input port of the PLC, an output port of the PLC is connected with and triggers the paper cutting mechanism to cut paper, the speed reducing motor II reverses 1-5 degrees of angular displacement, and the speed reducing motor I stops the paper in a delayed mode.
Specifically, the operation principle and the connection structure of the color recognition sensor 84 are as follows: (see the control program ladder diagram and the PLC controller dot bitmap specifically): the working principle of triggering the paper feeding mechanism to act by the color recognition sensor is as follows: the color recognition sensor is connected with the input end of the PLC, and the output end of the PLC is connected with a dispensing valve of the gluing system, a speed reduction motor I23 relay of the steel pipe roller bracket 2 and a paper feeding mechanism speed reduction motor II start-stop control time relay. The working principle is as follows: when the color recognition sensor 84 detects the color of the glue, the gluing system is indicated to finish gluing the glue body at least one circle in the radial direction of the pipe orifice of the steel pipe; at the moment, the output port of the PLC triggers a dispensing valve of the gluing system to stop gluing, and triggers a relay of a speed reducing motor I23 of the steel pipe roller bracket 2 to be switched off to stop stirring the steel pipe to rotate; triggering a time relay of a paper feeding mechanism speed reducing motor II to be conducted so as to delay 2s to continuously feed paper in fixed length; the paper feeding mechanism speed reducing motor II delays for 2 seconds for example to feed paper with fixed length, the cowhide paper strips which are pre-threaded are sent to the highest position of the top point of the opening of the steel pipe in fixed length, the PLC controller receives the speed reducing motor II delay paper feeding stop signal and triggers the paper pressing roller of the paper pressing mechanism to execute the in-place pressing and pasting actions, the paper strip paper head is adhered to the opening of the steel pipe, and the speed reducing motor II and the speed reducing motor I are triggered to synchronously rotate (linear speed) after the paper pressing roller is pressed in place for 2 seconds.
Besides, another function and connection working principle of the color recognition sensor 84 is to trigger the paper cutting mechanism to act when the color recognition sensor recognizes the color of the kraft paper: the color recognition sensor 84 is connected with the input end of a PLC, the output end of the PLC is connected with a time relay of delayed shutdown after the speed reduction motor I23 of the steel pipe roller bracket 2 is delayed for 1 second to tension kraft paper, and the output end of the PLC is also connected with a solenoid valve of a paper cutting cylinder II of a gate-off type cutting action of a paper cutting mechanism for controlling the quick downlink telescopic reset of a paper cutting cutter; in addition, the kraft paper strip is tensioned by controlling the speed reducing motor II of the paper feeding mechanism to rotate by 1-5 degrees in a reverse angular displacement manner: the speed reducing motor II (shown in figures 11 and 13) can select a stepping motor to perform pulse direction control on the stepping motor through a PLC (programmable logic controller), realize forward and reverse angular displacement rotation of the stepping motor by outputting high and low levels to the direction of a driver of the stepping motor, and stop the machine to be locked after controlling the stepping motor to reversely rotate for 1-5 degrees so as to tension kraft paper strips. In addition, the control of the different directions of the stepping motor can be changed by adjusting the wiring of the stepping motor as shown in fig. 12). The working principle that the color recognition sensor 84 recognizes the color of the kraft paper is as follows: the color recognition sensor 84 detects the color of the kraft paper, and indicates that the kraft paper has completed the paper wrapping and bonding operation for at least one circle in the radial direction of the steel pipe opening. At the moment, a time relay I23 of a deceleration motor I23 of the steel pipe roller bracket 2 is triggered to delay 0.5-1s for stopping, and a deceleration motor II of the paper feeding mechanism is triggered to reversely rotate for 1-5 degrees and then is self-locked to fully tension kraft paper strips; when the sufficient tensioning of kraft paper strip is fully accomplished, trigger II solenoid valves actions of cylinder of paper cutter mechanism paper cutting cutter 82 and accomplish the action of cuting the kraft paper strip. It should be added that the newly replaced kraft paper reel needs to manually complete the paper pre-threading operation of kraft paper strips in the paper feeding mechanism 7 and the paper feeding guide slot 81, and the rest of the operations are automatically completed by program setting, which will be described in detail in the following steps.
the paper feed guide 81 and the paper cutting mechanism 8 are described below: the paper feeding guide groove 81 is of a flat square tube through groove structure matched with the width of a kraft paper strip; the paper cutting cutter 82 and the cylinder II 83 are mounted in a hidden mode in a closed shell of the paper cutting mechanism 8 (as shown in figure 5 and figure 7), and a piston rod of the cylinder II 83 is a single-action cylinder which vertically stretches downwards quickly to realize cutting of kraft paper. Before the cutting mechanism cuts, the tensioning principle that the stepping motor II of the speed reducing motor II reversely rotates for 1-5 degrees and then is locked and the time relay I23 of the speed reducing motor I of the steel pipe roller bracket 2 delays for 0.5-1s to stop is shown in detail in the text, and the description is omitted. Moreover, for realizing that the piston rod of the cylinder II 83 selects the single-acting cylinder to realize the cutting and the cutting of the kraft paper by the vertical downward quick telescopic displacement, the cylinder II is provided with the regulating valve for regulating the airflow speed of the cylinder, and the airflow speed of the cylinder II 83 is regulated by the regulating valve to realize the quick cutting of the single-acting cylinder II.
In the above embodiment, to realize the platen attaching operation with a simpler structure (as shown in fig. 5), the following steps are further included: the paper pressing mechanism 9 comprises a paper pressing roller 91 for applying downward pressure to the kraft paper and the steel pipe and a driving air cylinder III 92 for driving the paper pressing roller 91 to move up and down in a telescopic way. The driving cylinder III 92 drives the paper pressing roller 91 to move downwards at a certain distance so as to keep the paper pressing and adhering station, and the paper pressing and adhering action is completed. Further: in order to elastically compensate the roundness floating error of the steel pipe, a piston rod of a driving cylinder III 92 of the paper pressing roller 91 is coaxially provided with a pressurizing spring 93 (shown in FIG. 7); the pressurizing spring 93 is used to compensate for the roundness fluctuation error of the steel pipe when the platen roller 91 applies downward pressure to the kraft paper and the steel pipe. Specifically, the pressure spring 93 is installed between the upper end surface of the outer side of the roller support frame of the paper pressing roller 91 and the outer side wall of the cylinder body execution end of the driving cylinder III 92 in a compressed mode, and the circular floating error jumping function of the paper pressing bonding station of the paper pressing roller 91 is achieved. The specific application is as follows: after the round winding of completion mouth of pipe kraft paper, and cut paper mechanism accomplish and cut the action back, promptly the PLC controller receives II solenoid valve reset control signals of cylinder of cutting paper mechanism after, triggers the whole inching of 2 holistic elevating system 21 of steel pipe gyro wheel bracket and goes up and down, and elevating system 21's cylinder drives steel pipe and the whole electric lift of steel pipe gyro wheel bracket 2 a cycle promptly to realize the automatic operation that the inching of kraft paper tail at steel pipe mouth of pipe summit top goes up and down firmly to bond. The input end of the PLC is connected with an electromagnetic valve of a cylinder II of the paper cutting mechanism so as to receive a trigger signal for the paper cutting mechanism to finish cutting; the output end of the PLC is connected with a lifting mechanism 21, such as an air cylinder electromagnetic valve of a pneumatic lifting system, so that the inching elastic lifting of an ascending and descending reset period of an air cylinder piston rod of the pneumatic lifting mechanism 21 is completed, and the paper tail kraft paper at the highest position of the top point of the pipe orifice is firmly bonded.
Further, (as shown in fig. 5 and 7) the glue application system 10 includes a pressure barrel 1002, a glue feeding pipe 1003, a glue dispensing valve 1004, and a stainless steel needle-shaped glue nozzle 1001. Wherein, pressure barrel 1002 installs the pressure sensor, and pressure sensor is used for providing the starved alarm for the colloid of splendid attire in the pressure barrel 1002. Specifically, (as shown in fig. 5) the glue in the pressure barrel 1002 is pumped by the high-pressure pump, and the glue outlet end of the high-pressure pump is connected to the stainless steel needle-shaped glue nozzle 1001 through a glue feeding pipeline 1003, and a glue dispensing valve 1004 for controlling the glue discharging is installed on the glue feeding pipeline 1003 close to the stainless steel needle-shaped glue nozzle 1001. About lacking gluey warning automatic control of pressure barrel 1002, connection structure is: the base of the pressure barrel is provided with a pressure sensor which is connected with the input end of a PLC controller, and the output end of the PLC controller is connected with a control switch of a glue-lacking alarm (such as an alarm driver control circuit relay). The working principle of the glue shortage alarm is as follows: when the pressure barrel is in glue shortage, through the change of the weight of the pressure barrel, a real-time pressure value signal (the minimum threshold value of the weight reduction of the pressure barrel in a glue shortage state) of the pressure barrel relative to the base, which is detected by the pressure sensor, is transmitted to the PLC controller, the output end of the PLC controller controls the suction of the glue shortage alarm relay, the circuit of the alarm connecting power supply is switched on, and the glue shortage alarm sends out a glue shortage alarm warning.
It should be noted that, preferably, the electric control box of the control system of the present invention includes both a manual control mode and an automatic control mode. Control program ladder diagrams (including an automatic control section and a manual control section) of the PLC controller relating to the present invention are shown in fig. 14 to 19:
(see fig. 10) the automatic mode operation principle of the PLC controller of the present invention is as follows:
Step 1, starting an automatic mode; the starting of the automatic mode is realized by controlling the power-on conduction of a main air switch of the system;
Step 2, the axial moving mechanism advances; when the PLC receives a power-on control signal of the automatic mode air switch, the PLC triggers the variable frequency speed control motor of the axial moving mechanism to operate, the moving bearing platform 31 of the axial moving mechanism 3 is driven by the variable frequency speed control motor 32, and the moving bearing platform 31 is driven by the gear-rack transmission pair to move axially close to the orifice of the steel pipe;
step 3, the variable frequency speed regulating motor of the axial moving mechanism operates in a speed reduction mode; when the first photoelectric switch 341 of the movable bearing platform 31 of the axial moving mechanism moves along with the platform to a position where the transmitting end of the first photoelectric switch 341 is shielded by the steel pipe, the variable-frequency speed-regulating motor is triggered to operate in a speed-reducing manner;
Step 4, stopping the variable frequency speed regulating motor when the variable frequency speed regulating motor reaches the pipe end detection position; when the second photoelectric switch 342 of the movable bearing platform 31 moves along with the platform to a position where the transmitting end of the second photoelectric switch 342 is shielded by the steel pipe, the variable-frequency speed-regulating motor is triggered to stop running. The automatic control of the double-station deceleration shutdown by the first and second photoelectric switches is realized, so that the automatic control of the axial transverse movement in place of the axial moving mechanism 3 towards the near end of the steel pipe orifice at a fixed distance (the automatic control purpose of the accurate distance parking from the end of the steel pipe to the end of the steel pipe) is realized according to the steel pipes with different lengths;
Step 5, the beam of the lifting arm assembly begins to descend; namely, after the PLC receives a stop control signal of the variable frequency speed regulating motor 32, the output end of the PLC controls the cylinder piston rod of the self-locking type traveling cylinder 53 to perform an extension action so as to push the beam 52 of the lifting arm assembly 5 to drop downwards in a straight line, so that the whole body of each mechanism of the paper winding system carried on the beam 52 is close to the highest point of the pipe orifice of the steel pipe to move downwards;
Step 6, stopping descending after the crossbeam 52 descends and detects the highest point of the steel pipe; along with the continuous descending of the beam 52 under the pushing action of the cylinder 53, a sensor 54 (particularly a distance sensor) for catching the highest point of the pipe diameter is fixedly installed by taking the bracket of the paper pressing mechanism 9 as a fixed supporting point; when the PLC receives that the sensor 54 reaches a set height distance from the top of the top point of the pipe orifice (if the distance from the detection point of the sensor to the top point of the steel pipe is 30-50 mm), the self-locking type floating air cylinder 53 is triggered to stop descending and self-lock;
Step 7, initially rotating the steel pipe, starting a gluing system, and finishing pre-gluing the steel pipe for at least one circle in the radial direction; when the PLC receives a control signal that the self-locking type floating air cylinder 53 stops descending and self-locks, a speed reduction motor I of the steel pipe roller bracket 2 is triggered to start running so as to stir the steel pipe to rotate at a constant speed; when the PLC receives a control signal for starting the operation of the speed reducing motor I, the PLC triggers the pre-coating system to start; opening a glue dispensing valve of a pre-gluing system to continuously pre-glue at least one ring of pipe orifice of the steel pipe along with the rotation of the steel pipe;
step 8, after the color recognition sensor detects the pre-coating glue, stopping the rotation of the steel pipe and stopping the pre-coating glue; that is, as the pre-coating in step 7 is continuously performed, when the color recognition sensor 84 detects the color of the glue, it indicates that the pipe orifice of the steel pipe has at least completed the operation of pre-coating and smearing the glue for more than one circle in the radial direction of the pipe orifice; when the PLC receives an effective electric signal sent by the color recognition sensor 84 for detecting the color of the glue, the output end of the PLC triggers the speed reduction motor I of the steel pipe roller bracket 2 and the gluing system to pause simultaneously; when the input end of the PLC receives signals of the steel pipe roller bracket 2, the reducing motor I and the gluing system simultaneously pause the operation of the control box, the PLC triggers the paper feeding mechanism to feed paper in a delayed and fixed length mode;
Step 9, a speed reducing motor II of the paper feeding mechanism delays to control to start (fix length) paper feeding; step 8, when the input end of the PLC receives signals of the steel pipe roller bracket 2, the reducing motor I and the gluing system simultaneously pause the operation of the control box, the PLC triggers the paper feeding mechanism to delay fixed-length paper feeding; the paper feeding mechanism transmits the kraft paper head which is manually penetrated in advance to the highest position of the top of the pipe orifice of the steel pipe from the paper feeding guide groove of the paper feeding mechanism by a time relay and a fixed length delay (5 s);
Step 10, after the paper feeding mechanism sends the paper head to the topmost point of the steel pipe in a delayed mode, a paper pressing roller of the paper pressing mechanism descends in place and keeps in place; step 9, when the PLC receives an in-place detection signal of delayed fixed-length paper feeding of the speed reducing motor II, the output end of the PLC triggers a driving cylinder III 92 piston rod of a paper pressing mechanism to drive a paper pressing roller 91 to descend in place, paper pressing in-place delay (2s-5s) control of the driving cylinder III 92 of the paper pressing mechanism is used, and paper pressing and bonding actions are carried out on the in-place paper head under the condition that the steel pipe is kept in a stop state;
step 11, synchronously delaying to control rotation of the steel pipe and a speed reducing motor II of the paper feeding mechanism to finish the actions of paper head length-fixing paper feeding, paper winding and paper sticking; when the PLC receives a cylinder electromagnetic valve driving cylinder piston rod of a cylinder III 92 driven by a paper pressing roller 91 of the paper pressing mechanism to descend to a proper position and a timing control signal is delayed for 2-5 seconds, the output end of the PLC triggers a speed reducing motor I of a steel pipe roller bracket 2 and a speed reducing motor II of a paper feeding mechanism to synchronously rotate and operate at the same linear speed so as to finish the actions of paper feeding and paper winding and bonding while paper head length fixing (in combination with the attached figure 9 and a program ladder diagram of the specification, the description is combined with the automatic control description of the delayed and length fixing synchronous linear speeds of the speed reducing motors I and II);
step 12, the speed reducing motor II stops feeding paper, the air cylinder I pushes the driven rubber wheel to reset and retreat, and paper is wound and stuck only by the rotation of the steel pipe; when the PLC receives a delay function of a time relay for the speed reducing motor I and the speed reducing motor II to reach a time delay and arrival time control signal of 2-5 seconds, namely the speed reducing motors I and II synchronously run at a certain linear speed length, the speed reducing motors II actively feed paper and delay (2-5s) to complete the main feeding paper feeding and winding and bonding of the speed reducing motors II and the steel pipe synchronously to form a pre-bonding length, and when the PLC receives the time delay of the time relay for the speed reducing motors I and II (3-5s), the speed reducing motor II is triggered to stop feeding paper but not to be locked; meanwhile, when the PLC receives a stop operation control signal of the speed reducing motor II and the paper releasing brake mechanism 63, the output end of the PLC triggers the air cylinder I of the paper feeding mechanism to reset and retreat so as to reset and contract the driven rubber wheel, thereby reducing the sliding friction resistance of the driven rubber wheel to the passive kraft paper conveyed by the stopped paper feeding mechanism; meanwhile, after the PLC receives a control signal for resetting and returning to the position of the cylinder I of the paper feeding mechanism, the output end of the PLC touches the paper feeding brake mechanism 63 to reset and return; when the input end of the PLC controller receives a signal of resetting and returning a control box of the paper releasing brake mechanism 63, the output end of the PLC controller triggers the speed reducing motor I of the steel pipe roller bracket 2 to restart the operation, and the continuously rotating steel pipe pulls the kraft paper strips on the driven paper releasing mechanism and the driven but unlocked paper feeding mechanism to be switched from a driving paper releasing state to a driven paper releasing state in a dragging and tensioning mode through the continuous operation of the speed reducing motor I, so that the energy is reduced and the consumption is reduced; namely, the subsequent paper winding and bonding actions are completed only by the active rotation of the steel pipe; the asynchronous influence between the speed reducing motor I of the steel pipe roller bracket 2 and the speed reducing motor II of the paper feeding mechanism is eliminated;
Step 13, after the color recognition sensor detects paper, the steel pipe stops rotating in a delayed manner; and step 12, with the uninterrupted operation of only the speed reducing motor I, after the paper winding system rotates around the pipe orifice of the steel pipe to wind and bond a circle of kraft paper, when the input end of the PLC receives a control signal that the color recognition sensor recognizes and detects the color of the kraft paper, the speed reducing motor I of the steel pipe roller bracket 2 is triggered to delay (0.2-1s) to stop rotating, and the other output end of the PLC triggers the speed reducing motor II (stepping motor) of the paper feeding mechanism to rotate in a reverse time direction for 1-5 degrees and then to stop tensioning. When the color recognition sensor recognizes and detects the color of kraft paper, the speed reducing motor I of the steel pipe roller bracket 2 is triggered to stop rotating in a delayed mode, and meanwhile, the kraft paper is tensioned after the kraft paper is stopped and is locked and rotated under the combined action after the speed reducing motor II (the stepping motor) of the paper feeding mechanism rotates anticlockwise for 1-5 degrees, so that the kraft paper is fully drawn and tensioned. When the PLC receives a delay stop control signal of the speed reducing motor I and a stop locking control signal after the speed reducing motor II (a stepping motor) rotates anticlockwise by 1-5 degrees, the step 14 is triggered to act;
step 14, cutting paper by a paper cutting mechanism; step 13, when the PLC receives a delay (0.2-1s) stop control signal of a speed reducing motor I and a locking control signal after the speed reducing motor II (a stepping motor) rotates anticlockwise for 1-5 degrees, triggering an air cylinder II 83 electromagnetic valve of the paper cutting mechanism to act, enabling an air cylinder II 83 piston rod of the paper cutting mechanism to instantly and quickly extend to execute a downward reset cutting action, pushing a paper cutting cutter which moves downward quickly to cut off and finish cutting and cutting of fully tensioned kraft paper strips, wherein a paper pressing roller of a paper pressing mechanism is kept stationary at a paper pressing and bonding station while the paper cutting mechanism executes the cutting action;
step 15, the steel pipe is lifted in a inching mode through a lifting mechanism, and a paper pressing mechanism flattens and compacts (bonds paper tails) the paper tail bonding points at the top points of the steel pipe; when the PLC receives a control signal that a piston rod of a cylinder II 83 of the paper cutting mechanism executes a paper cutting gate to cut off and cut, the output end of the PLC triggers the lifting mechanism 21 to lift the steel pipe and the steel pipe roller bracket 2 to perform integral inching lifting reciprocating motion for one or more cycles, so that the paper tail is firmly pressed and bonded at the vertex position of the pipe orifice under the pressurization effect of the pressurization spring 93 through the roller of the paper pressing mechanism and the inching lifting combined action of the lifting mechanism 21 in cooperation with the roller of the paper pressing mechanism, and the paper tail is firmly bonded and fixed;
step 16, resetting and lifting the paper pressing roller, lifting the beam, and returning the axial moving mechanism to the original point; when the PLC receives a reset control signal for inching and lifting of the lifting mechanism 21, the output end of the PLC triggers the paper pressing roller of the paper pressing mechanism to reset and rise to the original point; after the input end of the PLC receives a control signal that a paper pressing roller of the paper pressing mechanism resets and rises to the original point, the output end of the PLC outputs a control signal that the trigger beam rises to the original point; when the input end of the PLC receives a control signal that the cross beam resets and rises to the original point, the output end of the PLC outputs a control signal for triggering the axial moving mechanism to return to the original point, and the axial moving mechanism is controlled to return to the original point;
Step 17, the whole control process is finished, and the second steel pipe is restarted after reaching the position; when the PLC receives a control signal that the axial moving mechanism returns to the original point, the whole control process is finished, a main air switch of the control system is powered off, and switching from an automatic mode to a manual mode can be realized; and (5) after the second steel pipe reaches the position, repeating the steps 1 to 17 so as to realize the operation of the next working cycle after the whole system is restarted by pressing the main air switch again.
from the above description it can be found that: firstly, the invention realizes the automatic winding function of using kraft paper to replace manpower for protecting the anticorrosive coating of the pipe orifice of the oil and gas conveying pipeline, and realizes automatic production; meanwhile, the harm influence of the diffusion and the release of harmful gases on the health of the human body in industrial glue coating is eliminated; and the kraft paper wrapping pipe orifice paper wrapping quality is uniform, neat, beautiful and flat. Secondly, the steel pipe body is stirred by the rollers on the Y-shaped steel pipe roller bracket driven by the speed reduction motor I, so that the steel pipe body is prevented from falling off and rotates at a constant speed, and the steel pipe anti-falling device is simple in structure and easy to realize; particularly, a sedimentation type limiting rolling mode is adopted at the Y-shaped bifurcation, and the anti-falling effect is excellent. In addition, the steel pipe can be transferred by adopting a surface conveying support plate with the gradient of less than or equal to 2 degrees, and the surface conveying support plate and the steel pipe rolling wheel bracket which is lifted by the slope tail end lifting mechanism act together, so that the step of hoisting the steel pipe is omitted, the steel pipe naturally rolls in place by gravity before carrying, and the steel pipe conveying support plate is economical and practical. Moreover, when the automatic paper winding device is applied specifically, the axial moving mechanism with the maximum moving distance of 3000mm cooperates with the double photoelectric switch I and the brake mechanism, so that the automatic paper winding device realizes the automatic identification function of the automatic paper winding device aiming at the shaft end pipe heads of steel pipes with different lengths, can meet the application requirement of automatic paper winding of the pipe heads of the steel pipes with different lengths, and has excellent universality. Moreover, the lifting arm assembly of the invention cooperates with the self-locking type traveling cylinder to realize the upper beam of the upright post, and the sensor for capturing the highest point of the pipe head can meet the automatic capturing and identifying function of the highest point of the pipe orifices of steel pipes with different diameters, so that the universality is excellent.
Particularly, the paper winding system only completes the pre-paper penetrating work of the kraft paper head manually, and the rest actions are automatically completed according to the program setting. Moreover, after one circle of pre-coating glue is finished, automatic paper winding and bonding are realized, and the problem that kraft paper and gluing are not easy to synchronize is solved; moreover, especially in the paper winding and bonding process, in the initial stage of automatic paper winding and bonding, the speed reducing motor I drives the steel pipe to rotate at a constant speed, the kraft paper is driven by the speed reducing motor II, the kraft paper is continuously and forwards conveyed continuously from the paper placing mechanism through the active rotating active rubber wheel 71 and the passive rubber wheel 73 synchronously with the rotation linear speed of the steel pipe, the kraft paper is compacted and bonded for a certain length along the radial direction of the pipe orifice of the steel pipe through the paper pressing roller of the paper pressing mechanism which is kept at the paper pressing station (the certain length is realized by the delay control function of the synchronous rotation of the speed reducing motors I and II); after kraft paper with a certain linear length is compacted and bonded along the radial direction of the pipe body (for example, after the kraft paper is bonded with a fixed length according to the delay control function of the synchronous rotation linear speed of the speed reducing motors I and II): stopping the speed reducing motor II, and only shifting the steel pipe by the speed reducing motor I to rotate at a uniform speed; meanwhile, when the PLC receives a stop control signal of the speed reducing motor II, the PLC triggers a driven rubber wheel 73 in the paper feeding mechanism to reset, contract and retreat so as to reduce the friction transmission resistance of the paper feeding mechanism to kraft paper; at the moment, only through the active rotation of the steel pipe, the firmly bonded kraft paper at the front section, the steel pipe continuously rotates along with the uninterrupted continuous rotation of the steel pipe, and the bonding action of the paper pressing roller of the paper pressing mechanism to the kraft paper, the steel pipe actively rotates while dragging, pulling, winding and bonding actions of the tension driven traction, pulling, winding and bonding of the kraft paper on the paper pulling and placing mechanism and the paper feeding mechanism, and the subsequent automatic paper winding and bonding operation of the radial direction of the pipe opening of the steel pipe is realized; on one hand, the energy is saved, the consumption is reduced, and on the other hand, the technical problems of paper winding unevenness and excessive paper release caused by asynchronous influence of the speed reducing motor II and the speed reducing motor I are solved. Moreover, after the color identification sensor identifies a kraft paper color control signal, the PLC controller triggers the speed reduction motor II (stepping motor) to rotate anticlockwise by 1-5 degrees and then self-lock, and simultaneously triggers the speed reduction motor I to delay for 0.5-1s to stop for synergistic action, so that the effect of fully tensioning kraft paper before the operation of the material mechanism can be achieved, and the working requirement of the kraft paper cutting mechanism for braking and breaking kraft paper can be met.
In conclusion, the invention adopts the axial moving mechanism to cooperate with the lifting arm assembly mechanism to realize the adaptive positioning identification of the steel pipes with different pipe diameters and different lengths, and has simple structure, accurate positioning and excellent universality. The effective combination of the conventional parts is adopted to replace manpower, the technical problem of protective automatic paper winding of the steel pipe orifice is solved creatively, automatic production is realized, and the requirement of mechanical unmanned modern production is met.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.
Claims (10)
1. Oil gas steel pipe end anticorrosive coating protection is with automatic paper device that twines, its characterized in that: the paper winding machine is provided with a slope conveying carrier plate (1), a steel pipe roller bracket (2), an axial moving mechanism (3), a brake mechanism (4), a lifting arm assembly (5) and a paper winding system carried on the lifting arm assembly (5); the conveying carrier plate (1) inclines downwards and rolls downwards to convey the steel pipe by means of the gravity of the steel pipe; a steel pipe limiting groove is formed at the lowest position of the slope surface of the conveying carrier plate (1), a steel pipe roller bracket (2) which is integrally lifted by a lifting mechanism (21) is arranged below the steel pipe limiting groove, and the steel pipe roller bracket (2) lifts a steel pipe and stirs the steel pipe to rotate at a constant speed on the steel pipe roller bracket; an axial moving mechanism (3) is arranged on the outer side of the shaft end of the steel pipe orifice of the steel pipe roller bracket (2), the axial moving mechanism (3) carries a lifting arm assembly (5) and a paper winding system to move axially close to the shaft end of the steel pipe orifice, and the axial maneuvering mechanism (3) stops at the steel pipe orifice after detecting the orifice through a brake mechanism (4); wherein the lifting arm assembly (5) is provided with a paper winding system; the paper winding system is sequentially composed of a paper placing mechanism (6), a paper feeding mechanism (7), a paper cutting mechanism (8), a paper pressing mechanism (9) and a gluing system (10); rubber coating system (10) are along the radial at least round back of gluing of precoating of accomplishing of steel pipe, nipper (9) will be put paper mechanism (6) and paper advance mechanism (7) and lead the kraft paper strip of sending through nipper gyro wheel (91) and press and paste in steel pipe mouth of pipe lateral wall to stir the steel pipe by steel pipe gyro wheel bracket (2) and rotate the completion kraft paper and twine paper at the steel pipe mouth of pipe and paste the action.
2. The automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the steel pipe roller bracket (2) is Y-shaped; the Y-shaped steel pipe roller bracket (2) is provided with a settlement type limiting lifting lower part of the steel pipe body at the bifurcation, and rollers (22) are symmetrically arranged at the bifurcation of the steel pipe roller bracket (2); the roller (22) is driven by a speed reducing motor I (23) to rotate at a constant speed, and the roller (22) is in rolling friction tangential contact with the outer circumferential side wall of the wheel body to stir the steel pipe to rotate at a constant speed.
3. the automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the axial moving mechanism (3) comprises a moving bearing platform (31), a variable-frequency speed regulating motor (32), a rotary motion-to-linear motion transmission pair (33) and a photoelectric switch I (34) for detecting the position of a pipe orifice at the shaft end of the steel pipe; the movable bearing platform (31) bears the integral axial movement of the lifting arm assembly (5) and the paper winding system, the movable bearing platform (31) is driven by a variable frequency speed regulating motor (32), and the integral movement of the platform is realized by the transmission of a rotary movement-to-linear movement transmission pair (33); the mobile bearing platform (31) further comprises an electric control box of an equipment electric control system moving along with the platform, the electric control box (11) comprises a PLC, and an input port of the PLC is connected with a photoelectric switch I (34); the output port of the PLC controller is connected with a frequency converter of the variable-frequency speed-regulating motor (32) to realize the variable-frequency speed-regulating brake control and the shutdown control of the variable-frequency speed-regulating motor (32).
4. the automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1 or 3, which is characterized in that: the brake mechanism (4) comprises a photoelectric switch I (34) for detecting the position of a pipe orifice at the shaft end of the steel pipe; the photoelectric switch I (34) is fixedly mounted at the front end of the movable bearing platform by taking the movable bearing platform (31) of the axial moving mechanism (3) as a support; the photoelectric switch I (34) is composed of a first photoelectric switch (341) and a second photoelectric switch (342); the first photoelectric switch (341) triggers the braking action of the variable-frequency speed-regulating motor (32) of the movable bearing platform (31); the second photoelectric switch (342) triggers a variable-frequency speed-regulating motor (32) of the movable bearing platform (31) to stop; and when the movable bearing platform (31) stops, the detection position of the second detection switch (342) is aligned with the end of the pipe orifice of the steel pipe, and the paper winding system carried by the movable bearing platform (31) is arranged over the pipe orifice.
5. the automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1 or 3, which is characterized in that: the lifting arm assembly (5) comprises an upright post (51) and a cross beam (52) which can vertically lift up and down on the upright post (51); the cross beam (52) is driven to lift by a self-locking type traveling cylinder (53) fixedly mounted on the upright post (52), the lifting arm assembly (5) is provided with a sensor (54) for capturing the highest point of the pipe diameter, and the sensor (54) takes a paper pressing mechanism (9) arranged right above the highest point of the steel pipe as a supporting and setting detection point; wherein the beam (51) is provided with a paper winding system, and a paper pressing mechanism (9) of the paper winding system is fixedly arranged in the middle part right above the steel pipe roller bracket (2).
6. the automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the paper placing mechanism (6) is provided with a driven paper shaft (61); the driven paper shaft (61) is coaxially provided with a kraft paper reel (62); the kraft paper reel (62) is provided with a paper placing brake mechanism (63); the paper placing brake mechanism (63) is provided with a paper placing brake cylinder (631), and the paper placing brake cylinder (631) realizes paper placing brake of the kraft paper reel (62) by pressing the back side shaft end of the driven shaft (61); the mounting bracket fixed mounting of driven paper axle (61) can carry out the photoelectric switch II that lacks the paper warning, the input port of PLC controller is connected to photoelectric switch II, the alarm of lacking the paper is connected to the output port of PLC controller.
7. the automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the paper feeding mechanism (7) is in sliding friction contact with a pair of rubber wheel pairs arranged up and down and is used for clamping kraft paper strips and conveying the kraft paper strips; wherein the upper rubber wheel is a driving rubber wheel (71) driven by a speed reducing motor II, and the lower rubber wheel is a driven rubber wheel (73) pushed by a cylinder I (72) to move up and down in a telescopic manner; the driven rubber wheel (73) resets and backs the kraft paper when the speed reducing motor II of the paper feeding mechanism (7) does not work so as to reduce the advancing resistance of the kraft paper.
8. The automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the paper cutting mechanism (8) comprises a paper feeding guide groove (81) which is obliquely arranged downwards; the paper feeding guide groove (81) is provided with a paper cutting cutter (82), the paper cutting cutter (82) is driven by a cylinder II (83) to move up and down, and kraft paper strips conveyed in the paper feeding guide groove (81) are cut off in a mode that a knife switch is switched off vertically downwards; the bottom of a paper feeding guide groove (81) of the paper cutting mechanism (8) is provided with a color recognition sensor (84), the color recognition sensor (84) is connected with an input port of a PLC (programmable logic controller), and an output port of the PLC is connected with a triggering paper cutting mechanism (8) or a paper pressing mechanism (9) to act.
9. The automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the paper pressing mechanism (9) comprises a paper pressing roller (91) for applying downward pressure to the kraft paper and the steel pipe and a driving cylinder III (92) for driving the paper pressing roller (91) to stretch and displace up and down; a piston rod of a driving cylinder III (92) of the paper pressing roller (91) is coaxially provided with a pressurizing spring (93); the pressure spring (93) is used for compensating roundness floating error of the steel pipe when the paper pressing roller (91) applies downward pressure to the kraft paper and the steel pipe.
10. The automatic paper winding device for protecting the anticorrosive coating at the end of the oil-gas steel pipe as claimed in claim 1, which is characterized in that: the gluing system (10) comprises a pressure barrel (1002), a glue conveying pipeline (1003), a glue dispensing valve (1004) and a stainless steel needle-shaped glue nozzle (1001); the pressure barrel (1002) is provided with a pressure sensor, and the pressure sensor is used for providing a glue shortage alarm for glue contained in the pressure barrel (1002).
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| CN201910868827.7A CN110539969B (en) | 2019-09-16 | 2019-09-16 | Automatic paper winding device for protecting anticorrosive coating of end of oil-gas steel pipe |
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| CN201910868827.7A CN110539969B (en) | 2019-09-16 | 2019-09-16 | Automatic paper winding device for protecting anticorrosive coating of end of oil-gas steel pipe |
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