CN114941118B

CN114941118B - Automatic production line for thermal spraying of silk screen and spraying method thereof

Info

Publication number: CN114941118B
Application number: CN202210607439.5A
Authority: CN
Inventors: 李志刚; 郑成添; 区汉初; 刘剑辉; 梁伟坚; 杨献雲
Original assignee: FOSHAN ADVANCED SURFACE TECHNOLOGIES Ltd
Current assignee: FOSHAN ADVANCED SURFACE TECHNOLOGIES Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-12-27
Anticipated expiration: 2042-05-31
Also published as: CN114941118A

Abstract

The invention discloses an automatic production line for thermal spraying of a silk screen and a spraying method thereof, belonging to the field of spraying equipment, and comprising an unreeling device, a compressing device, a sand blasting device, a blowing-off device, a spraying device, a shearing machine, a screen pulling device and a dragging device which are sequentially arranged, wherein one end of the dragging device can be butted with the compressing device, the other end of the dragging device can be butted with the shearing machine, the silk screen can be dragged to the shearing machine from the unreeling device circularly, the automatic production line can carry out continuous spraying operation on the silk screen, the spraying effect is good, the dragging device can drag a silk screen head to the shearing machine to carry out multi-section segmentation of different lengths, the silk screen can also be sprayed in the dragging process, the replacement efficiency of a silk screen reel is improved, and a dust removal system has small harm to the environment and the health of workers.

Description

Automatic production line for thermal spraying of silk screen and spraying method thereof

Technical Field

The invention relates to the field of spraying equipment, in particular to an automatic production line for thermal spraying of a silk screen and a spraying method thereof.

Background

In the chemical industry, a catalyst is required in many chemical reactions to improve the reaction efficiency. In order to increase the contact area between reactants for reactants in a liquid or gaseous state, it is necessary to form the catalyst into a net-like structure. In recent years, some products adopt a thermal spraying process to coat a catalyst on a silk screen-shaped substrate so as to meet the reaction requirement, however, the process is not mature, and a single silk screen is generally used for spraying during thermal spraying, so that the defects that firstly, a workpiece needs to be cut into blocks and then fixed on a tool, the clamping is very complicated and time-consuming, and the spraying efficiency is not high; secondly, as the workpiece is fixed on the tool rack for thermal spraying, powder particles during spraying can be stuck on the tool rack, and the tool rack needs to be cleaned manually every time a certain workpiece is sprayed, so that the labor consumption is high; and thirdly, for large-size workpieces, the tool frame needs to be correspondingly enlarged, so that when the large-size workpieces are sprayed, the tool frame is very heavy in weight and inconvenient to carry, finished products are greatly influenced by manpower, and the consistency of the sprayed finished products is poor.

The prior patent application with publication number CN100872993A discloses an anticorrosion coating device for a woven metal wire mesh, which sequentially comprises an uncoiler, a pretreatment system, an electrostatic spraying device, a powder scattering system, a powder drying and curing drying channel and a coiling machine, wherein clamp-type tentering conveyors are arranged on stations of the electrostatic spraying device, the powder scattering system and the powder drying and curing drying channel, each clamp-type tentering conveyor comprises a conveying chain a positioned on the station of the electrostatic spraying device and the powder scattering system and a conveying chain b positioned on the station of the powder drying and curing drying channel, a needle plate type chain system for temporarily fixing the woven metal wire mesh is arranged at the adjacent position of the conveying chains a and the conveying chains b, and the coating device cannot adjust the width of a metal mesh coil, cannot divide the metal mesh and cannot produce metal meshes with different specifications.

Disclosure of Invention

The invention aims to provide an automatic production line for thermal spraying of a screen, which solves the problems of low coating efficiency and poor consistency of finished products of screens of various specifications.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a silk screen thermal spraying automatic production line, is including unwinding device, closing device, sand blasting unit, the blowing device, spraying device, cutter and the device of drawing the net that arranges in proper order, still including pulling the device, the one end that pulls the device can with closing device docks, the other end with the cutter butt joint, can with the silk screen endless follow unwinding device drags on the cutter.

Preferably, the unwinding device comprises a left unwinding seat, a right unwinding seat and a moving device, the left unwinding seat and the right unwinding seat are oppositely and slidably connected to the unwinding device, and the moving device is arranged in the middle of the unwinding device and used for pushing the left unwinding seat and the right unwinding seat to oppositely or reversely move so as to adjust the clamping width of the unwinding device.

Preferably, the dragging device runs through closing device, sand blasting unit blow clean the device spray coating device with the cutter, and be in the below, its one end can with unwinding device docks, the dragging device includes bracket, tow chain, gear motor, tow hook, deflector and backing roll, the tow chain is followed the length direction of bracket installs the both sides of bracket, gear motor installs on the bracket, the both ends of tow hook are connected respectively on the chain link lateral wall of tow chain, the tow hook includes bottom plate and splint, the bottom plate is followed the width direction of bracket is connected on the tow chain, splint detachably connect in the bottom plate, make things convenient for material loading and test to do not waste the stub bar.

Preferably, the pressing device comprises a pressing frame, a lower carrier roller, an upper carrier roller and a positioning plate, the lower carrier roller is fixed in the pressing frame, the upper carrier roller is movably connected to the pressing frame, is located right above the lower carrier roller and can move towards the lower carrier roller, the lower carrier roller and the upper carrier roller are movably connected to the pressing frame and are close to the unwinding device, the positioning plate can move downwards to press the silk screen on the pressing frame, the moving stability of the silk screen is improved, and the silk screen is prevented from wrinkling to cause spraying quality defects.

Preferably, the sand blasting device comprises a sand blasting box, a sand blasting mechanical arm, a sand material recovery disc, an air inlet silencer, an automatic sand blasting station, an air exhaust silencer and a spray gun, the sand blasting mechanical arm is arranged at the top of the sand blasting box and adopts a multi-joint mechanical arm, the spray gun is arranged at the execution end of the sand blasting mechanical arm, the sand material recovery disc is arranged at the bottom of the sand blasting box and consists of a plurality of recovery tanks which are connected side by side, the sand material recovery disc is connected with the automatic sand blasting station, the air inlet silencer is arranged on one side wall of the sand blasting box, the air exhaust silencer is arranged on the other side wall of the sand blasting box, the automatic sand blasting station comprises a cyclone separator, a vibrating screen, a double-bin continuous sand blasting system and a recovery pipe, the cyclone separator is arranged at the upper part of the automatic sand blasting station, the vibrating screen is arranged below the automatic sand blasting station and connected with the vibrating screen, the double-bin continuous sand blasting system is arranged below the vibrating screen and connected with the vibrating screen, the recovery pipe is composed of a plurality of pipelines side by side, one end of the recovery pipe is connected with the sand material recovery disc, the other end of the recovery pipe is connected with the cyclone separator, the double-bin continuous sand blasting system is used for continuously supplying materials to the spray gun, the blowing device comprises a blowing cabinet, a plurality of first blowing knives, a plurality of second blowing knives, a gas supply pipeline and a silencing box, the plurality of first blowing knives are arranged along the moving direction of the silk screen and respectively face different directions, the first blowing knives are arranged to be aligned with the side surface of the silk screen, the gas supply pipeline is respectively connected with the plurality of first blowing knives and connected with the first blowing knives, and the silencing box is arranged on the side wall of the blowing cabinet, the spraying device comprises a spraying cabinet, a spraying mechanical arm, a grid, an exhaust silencing cabinet, an air inlet silencing cabinet and a spraying gun, wherein the spraying mechanical arm is arranged on one side, close to the blowing-out device, of the upper portion of the spraying cabinet, the grid is arranged below the spraying cabinet, the exhaust silencing cabinet is arranged on one side wall of the spraying cabinet, the air inlet silencing cabinet is arranged on the other side wall of the spraying cabinet, the spraying gun is detachably connected to an execution end of the spraying mechanical arm, sand blasting is used for cleaning dirt on the silk screen and improving the surface adhesive force of the silk screen, the blowing-out improves the surface cleanliness of the silk screen, the spraying range is adjustable, and the spraying device is suitable for silk screens of different specifications.

Preferably, the sand blasting device, the blowing-off device and the spraying device are arranged to be mutually attached and connected into a whole, so that the air tightness of sand blasting, blowing-off and spraying is improved, the surface treatment quality of the silk screen is improved, and the environment pollution caused by particles and noise is prevented.

Preferably, the shearing machine comprises a rack, a first pressure head, a second pressure head and a cutter, wherein the first pressure head is arranged on the upper portion of the rack and can move in the direction perpendicular to the surface of the screen, the second pressure head is arranged on one side, away from the spraying device, of the first pressure head, the second pressure head comprises an upper pressure head and a lower pressure head, the lower pressure head is fixed on the lower portion of the rack, the upper pressure head is connected to the position right above the lower pressure head in a lifting mode, the cutter is arranged on one side, away from the spraying device, of the second pressure head, the cutter can move in the direction perpendicular to the surface of the screen, and the first pressure head and the second pressure head are matched to clamp the screen, so that the screen can be divided into multiple sections and is conveniently pulled out and discharged by the screen pulling device.

Preferably, the net pulling device comprises a frame, a clamping mechanism and a power mechanism, the clamping mechanism is connected to the frame in a sliding mode, the power mechanism is used for pushing the clamping mechanism to move, the clamping mechanism comprises a shearing fork, a linear driver and a sliding table, the shearing fork is arranged on the sliding table, and the linear driver is used for pushing the shearing fork to move in an opening and closing mode, so that the silk screen moves to provide power and is also used for continuous blanking.

More preferably, the device further comprises a dust removal system and a material trolley, wherein the dust removal system is used for purifying dust, and the material trolley is arranged below the net pulling device and used for transferring the processed silk screen to prevent dust and noise from polluting the environment.

The invention also aims to provide an automatic production line for thermal spraying of silk screens, which solves the problem of low coating efficiency of multi-specification silk screens.

a screen thermal spraying method is realized by the screen thermal spraying automatic production line, and specifically comprises the following steps:

s1, reeling, adjusting the clamping width of the unreeling device, mounting a reel of the screen on the unreeling device, opening the reel of the screen, fixing a screen head on the dragging device, dragging the screen head to the shearing machine by the dragging device, cutting the screen by the shearing machine, and clamping the screen by the screen dragging device for dragging;

s2, pressing, wherein the pressing device presses the silk screen upwards and downwards along the width direction of the silk screen;

s3, sand blasting, wherein the sand blasting device is used for performing sand blasting polishing and hardening on one part of the silk screen;

s4, cleaning, namely cleaning the silk screen subjected to sand blasting along the length direction and the width direction of the silk screen from top to bottom by using the cleaning device;

s5, spraying, wherein the spraying device uniformly sprays powder particles on the cleaned silk screen;

s6, breaking, namely cutting and breaking the silk screen which is sprayed by the shearing machine in unequal lengths;

and S7, blanking, dragging the cut silk screen to the lower part of the net pulling device by the net pulling device for storage, placing the silk screen by the reciprocating motion of the net pulling device, and repeating the processes of S3-S6 to realize the circular surface treatment of the silk screen.

The beneficial effects of the invention are as follows:

(1) This silk screen thermal spraying automatic production line has the device that drags, can pull the silk screen head and carry out the multistage of different my length on the cutter and cut apart, also can carry out the spraying operation to the silk screen among the traction process, has improved the change efficiency of silk screen reel.

(2) This automatic production line of silk screen thermal spraying has sand blasting unit, the blowing-out device and the spraying device that the parallel connection is in the same place, can carry out continuous multiple operation to the silk screen and handle, and the spraying quality is high, and the three links together and cooperates dust collector, has reduced the noise and has prevented dust pollution.

(3) The automatic production line for thermal spraying of the silk screen is provided with the screen pulling device, is used for providing power for moving the silk screen on the production line, is matched with the shearing machine to divide the silk screen into a plurality of sections with different lengths, and is pulled out to the material trolley, so that the full-automatic production of the production line is realized by discharging.

Drawings

FIG. 1 is an isometric view of an automated wire mesh thermal spray production line provided by the present invention;

fig. 2 is an isometric view of an unwinding device provided by the present invention;

fig. 3 is a front view of an unwinding device provided by the present invention;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an isometric view of a compression device provided in accordance with the present invention;

FIG. 6 is a front view of a compression device provided by the present invention;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 8 is an isometric view of a blasting apparatus provided by the present invention;

fig. 9 is a front view of a blasting apparatus provided by the present invention;

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 9;

FIG. 11 is an isometric view of a blow-down apparatus provided by the present invention;

FIG. 12 is a front view of a blowing device provided by the present invention;

FIG. 13 is a cross-sectional view taken along line D-D of FIG. 12;

FIG. 14 is an isometric view of a spray coating device provided by the present invention;

FIG. 15 is a front view of a spray coating device provided by the present invention;

FIG. 16 is a cross-sectional view taken along line E-E of FIG. 15;

FIG. 17 is an isometric view of a shear provided by the present invention;

FIG. 18 is a front view of a shear provided by the present invention;

FIG. 19 is a cross-sectional view taken along line F-F of FIG. 18;

FIG. 20 is a front view of a towing attachment provided by the present invention;

FIG. 21 is a partial view at G of FIG. 20;

fig. 22 is an isometric view of a net puller provided by the present invention;

fig. 23 is a front view of a net pulling device provided by the present invention;

FIG. 24 is a cross-sectional view taken along line H-H of FIG. 23;

FIG. 25 is an isometric view of a dust extraction system provided by the present invention.

Reference numerals are as follows:

1. an unwinding device; 11. a right unwinding seat; 111. a first torque motor; 112. a first reel; 113. a first slider; 12. a left unwinding seat; 121. a second torque motor; 122. a second reel; 123. a second slide carriage; 13. unwinding the frame; 14. a guide roller; 15. pressing a plate; 16. a traversing device; 161. a coreless motor; 162. a first lead screw; 163. a second lead screw; 2. a dragging device; 21. a towing bracket; 22. a drag chain; 23. a reduction motor; 24. towing a hook; 241. a base plate; 242. a splint; 25. a guide plate; 26. a support roller; 3. a compressing device; 31. a pressing frame; 32. a lower carrier roller; 33. an upper supporting roller; 34. positioning a plate; 341. a friction plate; 342. pressing down the air cylinder; 4. a sand blasting device; 41. a sand-blasting box; 42. a sand blasting mechanical arm; 43. a sand recovery tray; 44. an air intake silencer; 45. an automatic sand blasting station; 451. a cyclone separator; 452. vibrating screen; 453. a dual-bin continuous sand blasting system; 4531. a sand storage tank; 4532. a transition tank; 4533. a sand blasting pipe; 46. an exhaust silencer; 47. a spray gun; 5. a blowing device; 51. blowing clean the cabinet; 52. a first blow-clean knife; 53. a second blow-down knife; 54. a gas supply duct; 55. a sound silencing box; 6. a spraying device; 61. a spraying cabinet; 62. a spraying manipulator; 63. a grid; 64. a screen pressing roller; 65. an exhaust silencer cabinet; 66. an air inlet silencing cabinet; 67. a spray gun; 7. a shearing machine; 71. a frame; 72. a first ram; 73. a second ram; 731. an upper pressure head; 732. a lower pressure head; 74. a cutter; 741. a first blade; 742. a second blade; 8. a net pulling device; 81. a frame; 82. a clamping mechanism; 821. shearing a fork; 822. a linear actuator; 823. a sliding table; 83. a power mechanism; 84. a material guide plate; 85. a top cover; 86. a material trolley; 9. a dust removal system; 91. a dust removal unit; 92. a fan house; 93. a sound-deadening duct.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

As shown in fig. 1, an automatic production line for thermal spraying of a screen comprises an unreeling device 1, a dragging device 2, a compressing device 3, a sand blasting device 4, a blowing-off device 5, a spraying device 6, a shearing machine 7 and a screen pulling device 8 which are sequentially arranged, wherein one end of the dragging device 2 can be in butt joint with the compressing device 3, the other end of the dragging device 2 can be in butt joint with the shearing machine 7, and the screen can be dragged to the shearing machine 7 from the unreeling device 1 in a circulating manner.

Preferably, referring to fig. 2 to 4, 20 and 21, the unwinding device 1 is provided with a right unwinding seat 11 and a left unwinding seat 12, the right unwinding seat 11 and the left unwinding seat 12 are oppositely mounted on the unwinding frame 13, the right unwinding seat 11 is composed of a first torsion motor 111, a first reel 112 and a first slide carriage 113, the first reel 112 is mounted on an output shaft of the first torsion motor 111 and faces the center of the unwinding frame 13, the first torsion motor 111 is mounted on the first slide carriage 113, the first slide carriage 113 is movable in the length direction of the unwinding frame 13, the first reel 112 is frustum-shaped in cross section and is provided with a stopper on a side near the first torsion motor 111 for preventing misalignment in unwinding the screen, the left unwinding seat 12 is composed of a second torsion motor 121, a second reel 122 and a second slide carriage 123, the second reel 122 is mounted on an output end of the second torsion motor 121 and faces and is coaxial with the first reel 112, the second torsion motor 121 is mounted on the second torsion motor 123, and the second slide carriage 123 is movable in the length direction of the unwinding frame 13 for feeding different widths of the screen 1.

Preferably, the unwinding device 1 is provided with a traverse device 16, the traverse device 16 is installed in the middle of the unwinding frame 13, the traverse device 16 is composed of a coreless motor 161, a first lead screw 162 and a second lead screw 163, one end of the first lead screw 162 and one end of the second lead screw 163 are both connected to an output shaft of the coreless motor 161, and the two lead screws have opposite rotation directions, and are used for driving the right unwinding seat 12 and the left unwinding seat 11 to move in opposite directions or in opposite directions, so that the first winding disc 112 and the second winding disc 122 can clamp the screen winding drums with different widths.

Preferably, the unwinding device 1 is provided with a guide roller 14 and a pressing plate 15, the guide roller 14 is movably connected to the unwinding frame 13 along the moving direction of the screen roll, the guide roller 14 can move up and down perpendicular to the end surface of the unwinding frame 13 to adjust the height of the screen relative to the unwinding frame 13, the pressing plate 15 is adjacent to the guide roller 14 and is located on one side of the guide roller 14 away from the screen roll, and the pressing plate 15 is driven by a cylinder and can move towards the end surface of the unwinding frame 13 to press the screen to ensure that the end of the screen does not move disorderly.

Preferably, referring to fig. 5-7, one side of the pressing device 3 is aligned with the unreeling device 1, the other side is aligned with the blasting device 4, the pressing device 3 includes a pressing frame 31, a lower carrier roller 32 and an upper carrier roller 33, the lower carrier roller 32 is formed by three roller rods which are connected to the middle of the pressing frame 31 in an equidistant rotating manner, the roller rods are located on the same plane and are arranged perpendicular to the moving direction of the screen, the upper carrier roller 33 also has three roller rods, the roller rods of the lower carrier roller 32 are opposite, the upper carrier roller 33 moves up and down perpendicular to the surface of the screen, and the distance between the roller surfaces of the upper carrier roller 33 and the lower carrier roller 32 is adjustable and used for pressing the screen within a certain length range to prevent the screen from entering the blasting device 4 to generate wrinkles, and the screen drawing device 8 is matched to generate tension on the surface of the screen, so as to improve the uniformity of spraying.

Preferably, a positioning plate 34 is installed on a side wall of the compressing device 3 close to the unwinding device 1, the positioning plate 34 is pushed by a downward air cylinder 342 and can move towards the screen, a protruding portion is formed on a side wall of the compressing frame 31, the positioning plate 34 and the protruding portion cooperate to completely press the screen, a friction plate 341 is installed on the positioning plate 34, the friction plate 341 is made of wear-resistant plastic, and the stability of compressing the screen is improved.

Preferably, referring to fig. 8-10, the sand blasting apparatus 4 includes a sand blasting box 41, a sand blasting robot 42, a sand recovery tray 43, an air intake silencer 44, an automatic sand blasting station 45 and an air exhaust silencer 46, the sand blasting box 41 adopts a closed gold sheet metal cabinet to prevent the sand from polluting the environment and threatening the health of operators when blasting sand, the sand blasting robot 42 is installed on the top of the sand blasting box 41, the sand blasting robot 42 has a plurality of freely adjustable positions in the sand blasting box 41, a spray gun 47 is installed at the end of the sand blasting robot 42 to perform various modes of reciprocal sand blasting by matching different motion control programs, the sand recovery tray 43 is installed at the bottom of the sand blasting box 41 and completely fills the bottom surface of the sand blasting box 41 to recover the ejected sand, the sand recovery tray 43 is composed of five W-shaped recovery grooves, the recovery grooves can be connected and combined side by side according to the actual site size, the top ends of the recovery grooves are all installed with a grating pitch of less than 10mm to prevent foreign matters from falling into the recovery grooves, one side of the recovery grooves 43 is connected with the automatic sand blasting station 45, the air exhaust silencer 43 is installed on the side wall of the sand blasting box 41 to reduce the noise of the air intake air exhaust silencer, and reduce the noise of the recovery grooves 41, and the noise of the air exhaust silencer 41.

Preferably, the automatic sand blasting station 45 comprises a cyclone 451, a vibrating screen 452, a double-bin continuous sand blasting system 453 and a recovery pipe 454, the recovery pipe 454 comprises three parallel pipes, one end of each pipe is connected with a sand material recovery disc 43, the other end of each pipe is connected with the cyclone 451, sand grains collected from the sand material recovery disc 43 are conveyed into the cyclone 451 to be subjected to solid-gas separation, and the sand grains are separated out, the cyclone 451 is a dry gas-solid separation device which separates dust from air flow by using centrifugal force generated when a gas-solid mixture rotates at high speed, as the centrifugal force applied to particles is far greater than gravity and inertia force, the cyclone 451 has the advantages of higher separation efficiency, higher efficiency, convenient management and maintenance, low cost and is often used for trapping dust with the diameter of more than 5-10 μm, the vibrating screen 452 is arranged below the cyclone 451, connected to the outlet of the cyclone 451, the vibrating screen 452 is provided with two outlets for solid-liquid separation, one outlet for separating sand is fed into a two-bin continuous sand blasting system 453, and the other outlet discharges liquid, the two-bin continuous sand blasting system 453 is disposed on the side of the sand blasting box 41, is communicated with the spray gun 47 of the sand blasting robot 42, and can continuously and uninterruptedly feed the sand to continuously spray the screen, the two-bin continuous sand blasting system 453 comprises a sand storage tank 4531, a transition tank 4532 and a sand blasting pipe 4533, the transition tank 4532 is connected to the outlet of the vibrating screen 452, and is used for collecting sand particles which are completely separated and simultaneously feeding the sand particles into the sand storage tank 4531, the sand blasting pipe 4533 is connected to the sand storage tank 4531, the sand blasting gun 47 of the sand blasting robot 42 receives the sand from the sand blasting pipe 4533, and sprays the sand particles on the screen under the action of compressed air to remove dirt and oxide scale on the surface of the screen, the adhesive force of the surface of the silk screen is improved.

Preferably, referring to fig. 11-13, the blow-down device 5 includes a blow-down cabinet 51, four first blow-down knives 52, four second blow-down knives 53, an air supply duct 54 and a sound-absorbing box 55, the blow-down cabinet 51 is of a sealed sheet metal structure to prevent overflow sand particles from leaking, the four first blow-down knives 52 are installed on the screen and sequentially arranged along the moving direction of the screen, two first blow-down knives 52 are respectively arranged in a group facing the incoming material and outgoing material directions of the screen, the blowing direction of the first blow-down knives 52 can be rotationally adjusted along the vertical direction of the screen to clean the screens with different widths, the second blow-down knives 53 are arranged on the side surfaces of the screen, the blowing direction is perpendicular to the moving direction of the screen, the length of the first blow-down knives 52 is longer than that of the second blow-down knives 53 and slightly smaller than that of the blow-down cabinet 51, the first blow-down knives 52 and the second blow-down knives 53 are respectively connected with the air supply duct 54, the air supply duct 54 continuously fills compressed air, and the sound-absorbing box 55 is installed on one side wall of the blow-down cabinet 51 for sound-down and reducing noise when the blow-down cabinet 51.

Preferably, referring to fig. 14-16, the spraying device 6 includes a spraying cabinet 61, a spraying manipulator 62, a grid 63, an exhaust muffler 65 and an intake muffler 66, the spraying cabinet 61 is a closed metal box to prevent the spraying material from overflowing to pollute the environment, an observation window is installed on the side wall of the spraying cabinet 61 to facilitate the operator to monitor the spraying quality and operation status in real time, the spraying manipulator 62 adopts a multi-joint mechanical arm, the execution end of the multi-joint mechanical arm is provided with a spraying gun 67 to meet the requirements of spraying operation of different materials by changing the specification of the spraying gun 67, the spraying manipulator 62 is installed on the top of the spraying cabinet 61 to spray from above or from the side of the silk screen, the spraying manipulator 62 can be controlled to spray in multiple operation paths by adopting different control degrees to meet the requirements of spraying the silk screens with different widths and specifications, the exhaust muffler 65 and the intake muffler 66 are respectively installed on the two opposite walls of the spraying cabinet 61 to muffle and reduce noise of the entering and exhausted air, so as to prevent noise pollution, the lower portion of the spraying cabinet 61 has the grid 63, and the grid 63 is fully distributed on the whole bottom of the spraying cabinet 61.

Preferably, the spraying cabinet 61 is further provided with a mesh pressing roller 64, the mesh pressing roller 64 is rotatably connected to one side wall of the screen entering the spraying cabinet 61, and the mesh pressing roller 64 is composed of a guide block, an air cylinder and a roller rod, and can move up and down along a direction perpendicular to the surface of the screen under the pushing of the air cylinder to flatten and position the screen entering the spraying cabinet 61, so as to prevent the screen from curling and warping.

Preferably, the sand blasting device 4, the blowing device 5 and the spraying device 6 are close together and arranged in sequence, sand blasting, blowing and spraying are carried out on the passing silk screen, the three boxes are combined together to enhance the integral sealing performance and effectively prevent harmful gas from overflowing, the silk screen is bright and has strong adhesive force after sand blasting, then the blowing device 5 blows and cleans the silk screen to remove sand grains and dirt, finally surface spraying is carried out, catalyst powder is uniformly attached to the silk screen, the three work continuously to improve the spraying quality of the silk screen, the silk screen enters the transition part of the sand blasting device 4 from the pressing device 3 and is covered by a metal cover extending out of the sand blasting box 41 to prevent the sand grains from drifting out and the dirt from the outside, and the silk screen is sprayed from the spraying device 6.

Preferably, referring to fig. 17-19, the cutting machine 7 is installed on the discharge side of the spraying device 6, and can cut off the silk screen after spraying, the cutting machine 7 includes a frame 71, a first press head 72, a second press head 73 and a cutter 74, the first press head 72 is installed on the upper portion of the frame 71 and can move along the direction vertical to the surface of the silk screen, a boss is installed right below the first press head 72, the first press head 72 moves towards the boss to clamp the silk screen on the table, the second press head 73 is installed behind the first press head 72, after the first press head 72 presses the silk screen, the silk screen is pressed for the second time, the second press head 73 is composed of an upper press head 731 and a lower press head 732, the upper press head 731 and the lower press head 732 are installed on the frame 71 relatively, and can move towards the surface of the silk screen, the joint surface of the upper press head 731 and the lower press head 732 can be adjusted up and down, the silk screen pressed by each first press head 72 can be positioned on a plane, or a drop height can be formed between the two pressing surfaces to improve the pressing degree of the silk screen, the cutter 74 is installed behind the second press head 73, the cutter 74 is pushed by the air cylinder to move close to the side surface of the second press head 73, the cutter 74 is composed of a first blade 741 and a second blade 742, the first blade 741 is connected to the frame 71 in parallel with the side surface of the second press head 73 and can move under the pushing of the air cylinder, the second blade 742 is installed on the side wall of the lower press head 732 to form shearing with the first blade 741, when the first blade 741 goes downward, the silk screen can be cut downwards, and the cutter 74 can cut the silk screen into different lengths under the control of different degrees to meet the use requirements of the silk screen in different occasions.

Preferably, referring to fig. 22-24, the end of the production line is a net drawing device 8, which is pulled in opposite direction to the shearing machine 7, and is used for taking out the sprayed and cut silk screen and placing the silk screen into the material trolley 86, and simultaneously providing tension for the movement of the silk screen in the production line, so that the silk screen can continuously move in the production line to complete a plurality of processes, the net drawing device 8 comprises a frame 81, a clamping mechanism 82 and a power mechanism 83, the clamping mechanism 82 is slidably connected to the frame 81 and can move back and forth in the frame 81 along the moving direction of the silk screen, the clamping mechanism 82 is composed of a shearing fork 821, a linear driver 822 and a sliding table 823, one end of the shearing fork 821 extends into the shearing machine 7, the other end links to each other with linear drive 822, linear drive 822 installs on slip table 823, the drive scissoring 821 does the motion that opens and shuts, be used for pressing from both sides the clamp silk screen, slip table 823 is last to have installed four scissoring 821, arrange side by side of four scissoring 821, its front end is linked to each other by the slat, the slat is made by wear-resistant material, when being used for pressing from both sides the clamp silk screen, increase frictional force, prevent that the silk screen pine from taking off and scraping the flower, slip table 823 is by sliding connection on frame 81, it is driven by power unit 83, power unit 83 installs the top at frame 81, it comprises motor and lead screw, be used for providing power for the pulling silk screen, guarantee the accuracy of pulling silk screen.

Preferably, the net pulling device 8 is further provided with a guide plate 84 and a top cover 85, the guide plate 84 is integrally formed by bending a metal plate, the guide plate is installed below the clamping mechanism 82, one end of the guide plate coincides with the side wall of the frame 81, the other end of the guide plate extends downwards to the bottom of the frame 81 perpendicular to the screen, the cut screen falls into the material trolley 86 through the guide of the guide plate 84, the screen is prevented from being scraped to the frame 81, the spraying surface on the screen is damaged, the quality of the screen is guaranteed, the top cover 85 is installed at the top of the frame 81, a transparent material is paved on the top cover, the dragging condition of the clamping mechanism 82 is conveniently observed from the outside, the external pollution materials are also prevented from falling onto the surface of the screen, and the cleaning degree of the screen is reduced.

Preferably, the material trolley 86 is placed below the frame 81 and used for receiving the silk screen dragged by the clamping mechanism 82, the material trolley 86 is composed of a dragging plate and a steering wheel, a channel is reserved at the lower part of the frame 81 close to the shearing machine 7 and used for the material trolley 86 to enter and exit, the material trolley 86 can be stopped at the side surface of the material guide plate 84, and after the silk screen is dragged out by the clamping mechanism 82, the silk screen can be spread and horizontally placed on the material trolley 86, so that the silk screen is convenient to take out, and the discharging efficiency is improved.

Preferably, the dragging device 2 penetrates through the pressing device 3, the sand blasting device 4, the blowing device 5, the spraying device 6 and the shearing machine 7, and is located below the dragging device, one end of the dragging device can be abutted to the unreeling device 1, so that when the silk screen is reeled up, a reeling head of the silk screen is connected to a production line to complete spraying and shearing and dividing, the dragging device 2 comprises a dragging frame 21, dragging chains 22, a speed reducing motor 23, dragging hooks 24, guide plates 25 and supporting rollers 26, the dragging chains 22 are installed on two sides of the dragging frame 21 along the length direction of the dragging frame 21, the speed reducing motor 23 is installed on the dragging frame 21 and is used for driving the dragging chains 22 to rotate, two ends of the dragging hooks 24 are respectively fixed on the side walls of the chain links of the two dragging chains 22 and can circularly move along the moving direction of the silk screen under the driving of the dragging chains 22, the dragging hooks 24 are composed of a bottom plate 241 and clamping plates 242, the clamping plates 242 are detachably connected to the bottom plate 241 and can clamp one end of the silk screen and are fixed by bolts, the head of the silk screen can be dragged to the shearing machine 7, a plurality of the guiding plates 25 are installed in the middle of the dragging frame 21 and are used for supporting the dragging chain 22 and preventing the silk screen supporting rollers from accurately controlling the distance of the silk screen supporting rollers 21 and preventing the silk screen supporting rollers from sagging at equal intervals, and the screen supporting rollers.

The working process of the dragging device is as follows:

one end of a silk screen penetrates through a guide roller 14 from a silk screen reel and is placed on a pressing plate 15, a drag chain 22 is started to rotate the position of a drag hook 24 to one side close to an unreeling device 1, the head of the silk screen is placed on a bottom plate 241, the position of the silk screen is finely adjusted to enable the screen surface to be flat, a mounting clamping plate 242 is fixed through bolts to clamp the silk screen on the drag hook 24, the drag chain 22 is started to rotate clockwise, the unreeling device 1 rotates at the same time, the silk screen is pulled in a stepping mode through the drag hook 24, the silk screen is stopped on a shearing machine 7 after the processes of compressing, sand blasting, blowing-out and sand blasting, the shearing machine 7 compresses and cuts the silk screen, and then the drag hook 24 is stopped below a drag frame 21, namely dragging and feeding are completed.

Preferably, referring to fig. 25, the spraying production line is further provided with a dust removal system 9, the dust removal system 9 is installed on the side surface of the unwinding device 1, the dust removal system 9 comprises two dust removal units 91, a fan room 92 and a silencing pipeline 93, the two dust removal units 91 are used for respectively removing dust for the sand blasting and spraying processes to prevent powder from polluting the environment, the fan room 92 is located between the two dust removal units 91 and is used for providing air for the sand blasting, blowing and spraying processes, and the silencing pipeline 93 is installed above the fan room 92, one end of the silencing pipeline is connected with the fan room 92, the other end of the silencing pipeline is connected with the external environment, external air is guided into the fan room 92, and washing and silencing treatment is carried out to reduce noise.

A wire mesh thermal spraying method specifically comprises the following steps:

s1, reeling, adjusting the clamping width of the unreeling device 1, mounting a cylinder of a screen roll on the unreeling device 1, opening a screen reel to pull, fixing a screen head on a dragging device 2, dragging the screen head to a shearing machine 7 by the dragging device 2, cutting the screen by the shearing machine 7, and clamping the screen by a screen dragging device 8 to drag;

s2, pressing, namely pressing the silk screen upwards and downwards by a pressing device 3 along the width direction of the silk screen;

s3, sand blasting, namely performing sand blasting polishing and hardening on one part of the silk screen by a sand blasting device 4;

s4, cleaning, namely cleaning the silk screen subjected to sand blasting from top to bottom by using a cleaning device 5 along the length direction and the width direction of the silk screen;

s5, spraying, namely uniformly spraying powder particles on the cleaned silk screen by using a spraying device 6;

s6, breaking, namely cutting and breaking the sprayed silk screen in unequal lengths by a shearing machine 7;

and S7, blanking, dragging the cut silk screen to the position below the screen pulling device 8 by the screen pulling device 8 for storage, placing the silk screen by the reciprocating motion of the screen pulling device 8, and repeating the processes from S3 to S6 to realize the surface treatment of the silk screen.

The specific working process of the automatic production line is as follows:

adjusting the width of a silk screen reel according to the width of the silk screen reel, adjusting the clamping width of a left unreeling seat 12 and a right unreeling seat 11 on an unreeling device 1 through a traversing device 16, placing the silk screen reel on the unreeling device 1, opening the silk screen reel to draw out a silk screen, enabling a silk screen head to pass through a guide roller 14 and be clamped by a pressing plate 15, starting a dragging device 2 to stop a towing hook 24 in front of the pressing plate 15, clamping the silk screen head onto the towing hook 24, pulling the silk screen by the dragging device 2 in a stepping mode, passing through a pressing device 3, moving an upper supporting roller 33 on the pressing device 3 downwards to apply pressure on the silk screen by matching with a lower supporting roller 32, pulling the silk screen by the dragging device 2 to enter a sand blasting device 4 to stop, performing reciprocating polishing and hardening on the silk screen entering a sand blasting box 41 by a sand blasting manipulator 42, moving the dragging device 2 to a sand blasting device 5 after sand blasting, cleaning the silk screen from the side by a first cleaning knife 52 and a second cleaning knife 53, at the moment, sand blasting is carried out on one section of the middle part of the silk screen, after cleaning and sand blasting are finished, the dragging device 2 pulls the silk screen to enter the spraying device 6, the spraying manipulator 62 sprays powder particles on the silk screen, the next section is blown clean, sand blasting is carried out on the next section, after sand blasting, blowing clean and spraying are finished, the dragging device 2 pulls the silk screen to enter the shearing machine 7, the first pressing head 72 and the second pressing head 73 press downwards, a part of the silk screen head is cut off by the cutter 74, the towing hook 24 on the dragging device 2 rotates from the lower part of the towing bracket 21, moves to the unreeling device 1 and stops at the lower part of the silk screen, the cutting fork 821 on the net pulling device 8 is pushed out at the moment, the cutting fork 821 on the net pulling device acts to clamp the silk screen, the first pressing head 72 and the second pressing head 73 are loosened, the net pulling device 8 takes over the step action of pulling the silk screen by taking over the device 2, the silk screen is subjected to sand blasting, blowing and spraying operation in sequence, after the silk screen pulling device 8 moves for a certain distance, the first pressing head 72 and the second pressing head 73 are pressed downwards, the silk screen subjected to spraying is cut by the cutter 74, the silk screen cut into small sections is clamped by the silk screen pulling device 8 and moves forwards, the silk screen is pulled above the material trolley 86 and then loosened, the silk screen pulling device 8 moves towards the shearing machine 7 again and clamps the silk screen to be dragged, the silk screen is placed on the material trolley 86 after the silk screen is subjected to spraying and shearing, and the spraying and the blanking of the silk screen can be realized by circulating the action. The sprayed silk screen can be cut into different lengths by adjusting the moving distance of the net pulling device 8 and the action of the shearing machine 7.

The spraying production line can adjust the clamping width of the unreeling device 1 and the length of the cut silk screen, can produce spraying silk screens with different specifications, and can be used in multiple processes of other coiled materials.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. An automatic production line for screen thermal spraying comprises an unreeling device (1), a compressing device (3), a sand blasting device (4), a blowing device (5), a spraying device (6), a shearing machine (7) and a screen pulling device (8) which are sequentially arranged, and is characterized by further comprising a dragging device (2), wherein one end of the dragging device (2) is butted with the compressing device (3), the other end of the dragging device can be butted with the shearing machine (7), and a screen can be circularly dragged to the shearing machine (7) from the unreeling device (1); the sand blasting device (4) comprises a sand blasting box (41), a sand blasting manipulator (42), a sand material recovery disc (43), an air inlet silencer (44), an automatic sand blasting station (45), an air exhaust silencer (46) and a spray gun (47), the sand blasting manipulator (42) is arranged at the top of the sand blasting box (41), the sand blasting manipulator (42) adopts a multi-joint manipulator, the spray gun (47) is arranged at the execution end of the sand blasting manipulator (42), the sand material recovery disc (43) is arranged at the bottom of the sand blasting box (41), the sand material recovery disc (43) is formed by connecting a plurality of recovery grooves side by side, the sand material recovery disc (43) is connected with the automatic sand blasting station (45), the air inlet silencer (44) is arranged on one sand blasting side wall of the sand blasting box (41), the air exhaust silencer (46) is arranged on the other side wall of the sand blasting box (41), the automatic sand blasting station (45) comprises a cyclone separator (452), a vibrating screen (452), a double-bin continuous system (453) and a vibrating screen (454), the upper portion (451) is arranged below the automatic sand blasting station (451), and is connected with it, recovery tube (454) comprises many pipelines side by side, one end of recovery tube (454) with sand recovery dish (43) links to each other, the other end with cyclone (451), two storehouse sandblast system (453) are used for continuous for spray gun (47) feed, blow clean device (5) including blow clean cabinet (51), many first blow clean sword (52), second blow clean sword (53), air supply pipeline (54) and whistle box (55), many first blow clean sword (52) set up along the moving direction of silk screen, and respectively face different directions, first blow clean sword (52) set up to aim at the side of silk screen, the air supply pipeline (54) is respectively connected with a plurality of first clean blowing knives (52), the sound attenuation box (55) is arranged on the side wall of the clean blowing cabinet (51), the spraying device (6) comprises a spraying cabinet (61), a spraying manipulator (62), a grid (63), an exhaust sound attenuation cabinet (65), an air inlet sound attenuation cabinet (66) and a spraying gun (67), the spraying manipulator (62) is arranged on one side, close to the clean blowing device (5), of the upper portion of the spraying cabinet (61), the grid (63) is arranged below the spraying cabinet (61), the exhaust sound attenuation cabinet (65) is arranged on one side wall of the spraying cabinet (61), the air inlet silencing cabinet (66) is arranged on the other side wall of the spraying cabinet (61), and the spraying gun (67) is detachably connected with the execution end of the spraying manipulator (62).

2. The automatic wire mesh thermal spray production line according to claim 1, characterized in that:

unwinding device (1) unreels seat (12) including a left side, unreels seat (11) and mobile device (16) on the right side, a left side unreel seat (12) with the right side unreels seat (11) and sets up and sliding connection in opposite directions on unwinding device (1), mobile device (16) set up unwinding device (1)'s middle part is used for promoting a left side unreel seat (12) with the right side unreels seat (11) and moves in opposite directions or dorsad.

3. The automatic wire mesh thermal spray production line according to claim 2, characterized in that:

the drawing device (2) runs through the pressing device (3), the sand blasting device (4), the blowing device (5), the spraying device (6) and the shearing machine (7) and is located below, one end of the drawing device can be in butt joint with the unreeling device (1), the drawing device (2) comprises a towing bracket (21), a towing chain (22), a speed reducing motor (23), a towing hook (24), a guide plate (25) and a supporting roller (26), the towing chain (22) is installed on two sides of the towing bracket (21) along the length direction of the towing bracket (21), the speed reducing motor (23) is installed on the towing bracket (21), two ends of the towing hook (24) are respectively connected on a chain link side wall of the towing chain (22), the towing hook (24) comprises a bottom plate (241) and a clamping plate (242), the bottom plate (241) is connected on the towing chain (22) along the width direction of the towing bracket (21), and the clamping plate (242) is detachably connected on the bottom plate (241).

4. The automatic wire mesh thermal spray production line according to claim 1, characterized in that:

compressing device (3) are including compressing tightly frame (31), snub pulley (32), upper idler (33) and locating plate (34), snub pulley (32) are fixed in compressing tightly frame (31), upper idler (33) swing joint in compressing tightly frame (31), be in directly over snub pulley (32), and can to snub pulley (32) remove, snub pulley (32) with upper idler (33), locating plate (34) swing joint in compressing tightly on frame (31), and be close to unwinding device (1), locating plate (34) can move down with the silk screen compress tightly on compressing tightly frame (31).

5. The automatic wire mesh thermal spray production line according to claim 1, characterized in that:

the sand blasting device (4), the blowing device (5) and the spraying device (6) are arranged to be mutually attached and connected into a whole.

6. The automatic wire mesh thermal spray production line according to claim 5, characterized in that:

the shearing machine (7) comprises a machine frame (71), a first pressure head (72), a second pressure head (73) and a cutting knife (74), wherein the first pressure head (72) is arranged at the upper part of the machine frame (71) and can move along the direction vertical to the surface of the silk screen, the second pressure head (73) is arranged at the side, far away from the spraying device (6), of the first pressure head (72), the second pressure head (73) comprises an upper pressure head (731) and a lower pressure head (732), the lower pressure head (732) is fixed at the lower part of the machine frame (71), the upper pressure head (731) is connected right above the lower pressure head (732) in a lifting mode, the cutting knife (74) is arranged at the side, far away from the spraying device (6), of the second pressure head (73), and the cutting knife (74) can move along the direction vertical to the surface of the silk screen.

7. The automatic wire mesh thermal spray production line according to claim 6, characterized in that:

draw net device (8) to include frame (81), fixture (82) and power unit (83), fixture (82) sliding connection be in on frame (81), power unit (83) are used for promoting fixture (82) motion, fixture (82) are including cutting fork (821), linear drive ware (822) and slip table (823), it sets up to cut fork (821) on slip table (823), linear drive ware (822) are used for promoting cut fork (821) makes the motion of opening and shutting.

8. The automatic wire mesh thermal spray production line according to any one of claims 1 to 7, characterized in that:

the wire mesh drawing machine is characterized by further comprising a dust removal system (9) and a material trolley (86), wherein the dust removal system (9) is used for purifying dust, and the material trolley (86) is arranged below the wire mesh drawing device (8) and used for transferring the processed wire mesh.

9. A silk screen thermal spraying method is realized by the automatic production line for the silk screen thermal spraying, and is characterized in that: the automatic wire mesh thermal spray production line according to claim 8, comprising:

s1, reeling, adjusting the clamping width of the unreeling device (1), installing a reel of the silk screen on the unreeling device (1), opening the reel of the silk screen, fixing a head of the silk screen on the dragging device (2), dragging the reel to the shearing machine (7) by the dragging device (2), cutting the silk screen by the shearing machine (7), and then clamping the silk screen by the net dragging device (8) for dragging;

s2, pressing, namely pressing the silk screen downwards and upwards by the pressing device (3) along the width direction of the silk screen;

s3, sand blasting, wherein the sand blasting device (4) is used for carrying out sand blasting polishing and hardening on one part of the silk screen;

s4, blowing clean, wherein the silk screen after sand blasting is cleaned by the blowing clean device (5) from top to bottom along the length direction and the width direction of the silk screen;

s5, spraying, wherein the spraying device (6) uniformly sprays powder particles on the cleaned silk screen;

s6, cutting and breaking, namely performing unequal-length cutting and breaking on the sprayed silk screen by using the shearing machine (7);

and S7, blanking, dragging the cut silk screen to the lower part of the net pulling device (8) by the net pulling device (8) for storage, placing the silk screen by the reciprocating motion of the net pulling device (8), and repeating the processes of S3-S6 to realize the circular surface treatment of the silk screen.