A method for spraying steel bar surface coating based on coating spraying equipment

Abstract

The invention discloses a method for spraying a coating on the surface of steel bars based on a coating spraying device, wherein the coating spraying device comprises: a spraying assembly and a feeding assembly; the method for spraying the coating on the surface of steel bars comprises the following specific steps: S1, an external feeding device conveys the steel bar material to the opening of the fixed support of the feeding assembly, and the magnet at the opening of the fixed support adsorbs and fixes the steel bar material; S2, driven by the driving mechanism, the steel bar material moves toward the feeding end of the spraying assembly along with the fixed support; S3, after the steel bar material passes through the transverse material supporting guide roller, it passes through the inner hole of the longitudinal limiting cylinder, and then enters the position of the nozzle of the spraying assembly to perform the coating spraying operation. The present invention can not only convey the steel bar material at a uniform speed, but also keep the vibration of the uniformly conveyed steel bar material within a low range, thereby effectively ensuring the uniformity of the spraying of the coating on the surface of the steel bar.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar surface coating spraying processing, specifically refers to a method for spraying steel bar surface coating based on coating spraying equipment, which can transport steel bar materials at a uniform speed and can keep the vibration of the steel bar materials transported at a uniform speed within a low range, thereby effectively ensuring the uniformity of the spraying of the steel bar surface coating. Background Art

[0002] The steel bars used in some special working conditions need to be sprayed with a coating to ensure the service life of the steel bar materials under special working conditions.

[0003] Existing rebar surface coating equipment typically consists of a coating material spray nozzle and a rebar feed mechanism for conveying the rebar. Several nozzles, arranged at equal angles, spray the coating material evenly onto the rebar as it passes through the nozzle station. However, due to the relatively poor speed uniformity of the existing rebar feed mechanism when conveying the rebar and the frequent significant vibration of the rebar itself during transport, the uniformity of the coating material applied to the rebar surface often fails to meet design requirements, which is a significant problem.

[0004] Therefore, the research purpose of the invention is to design a steel bar surface coating spraying method based on coating spraying equipment that can not only transport steel bar materials at a uniform speed, but also keep the vibration of the steel bar materials transported at a uniform speed within a low range, thereby effectively ensuring the uniformity of the spraying of the steel bar surface coating. Summary of the Invention

[0005] In response to the technical problems existing in the above-mentioned prior art, the invention provides a method for spraying steel bar surface coating based on coating spraying equipment, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the invention is:

[0007] A method for spraying a coating on the surface of a steel bar based on a coating spraying device,

[0008] The coating spraying equipment includes:

[0009] The spraying assembly includes a fixed frame and a plurality of spray heads fixedly mounted on the fixed frame. A plurality of transverse material guide rollers for supporting the steel bars and at least one longitudinal limit cylinder for vibration reduction are rotatably mounted side by side on the fixed frame on the feeding end side of the spraying assembly. A gap is set between the inner hole of the longitudinal limit cylinder and the steel bar material.

[0010] The feeding assembly includes a support frame fixedly arranged on one side of the feeding end of the spraying assembly 1, and a plurality of corresponding fixed support members are movably arranged side by side on the support frame. The fixed support members circulate through the feeding end of the spraying assembly 1 under the drive of the corresponding driving mechanism. The fixed support members are respectively provided with openings for supporting steel bars facing upward, and corresponding magnet members are respectively fixedly installed at the openings of the fixed support members;

[0011] The spraying method of the steel bar surface coating comprises the following specific steps:

[0012] S1, the external feeding equipment conveys the steel bar material to the opening of the cyclically moving fixed support member, and the magnet member at the opening of the fixed support member adsorbs and fixes the steel bar material;

[0013] S2, under the drive of the driving mechanism, the steel bar material moves along with the fixed support member toward the feed end side of the spray assembly. When the fixed support member leaves the feed end side of the spray assembly, the magnet member is disconnected from the steel bar material, and the steel bar material continues to move toward the feed end side of the spray assembly.

[0014] S3, after the steel bar material passes through the transverse material support guide roller, it passes through the inner hole of the longitudinal limiting cylinder, and then enters the position of the nozzle of the spraying assembly for coating spraying operation. The inner hole of the longitudinal limiting cylinder limits the vibration amplitude of the steel bar material.

[0015] The step S3 further includes a step S4, in which the steel bar material after the coating spraying is output along one side of the discharge end of the spraying component and is output outward through the corresponding discharge component.

[0016] The discharge assembly used in step S4 corresponds in position to the feed assembly and has the same structure as the feed assembly.

[0017] There are three nozzles, which are staggered at 120° on the fixed frame, and a residual material collection hopper is provided on the outside of the discharge end of the three nozzles, and the residual material collection hopper is connected to the air inlet end of the external bag filter.

[0018] The coating residue generated during the coating spraying operation in step S3 is collected by the residue collection hopper and transmitted to an external bag filter for filtration and recovery.

[0019] A corresponding vibration damping mechanism is provided in the longitudinal limiting cylinder, and a vibration sensor for detecting the vibration amount of the transverse material supporting guide roller is fixedly installed on the mounting seat of the transverse material supporting guide roller located on the front side of the longitudinal limiting cylinder.

[0020] The vibration damping mechanism includes a vibration damping cavity arranged at the periphery of the inner hole of the longitudinal limit cylinder, a driving cavity is arranged in the longitudinal limit cylinder outside the vibration damping cavity, the vibration damping cavity is filled with a plurality of corresponding damping particles for vibration reduction, the driving cavity is connected to an external air compressor through a corresponding inflation pipe, and the inflation pipe is connected to a pressure relief valve; a plurality of corresponding connecting pipes are arranged at intervals in the vibration damping cavity, the inner end portions of the connecting pipes pass through the inner hole of the longitudinal limit cylinder, and corresponding mounting pistons are movably installed in the connecting pipes, and corresponding support balls are rollingly installed on the inner end surfaces of the mounting pistons, and corresponding fixing rods are fixedly connected in the connecting pipes on the outsides of the mounting pistons, and corresponding limiting springs are fixedly connected between the fixing rods and the mounting pistons.

[0021] In step S3, when the vibration sensor detects that the vibration amount generated by the rotation of the transverse material support guide roller is greater than the set value V1, it can be judged that the steel material is in a large vibration state at this time. At this time, the external air compressor is controlled to inject high-pressure gas into the drive chamber to drive each installation piston to move toward the inner hole side of the longitudinal limit cylinder, so that each support ball is respectively against the surface of the steel material to transfer the vibration amount of the steel material to the longitudinal limit cylinder, and effectively reduce vibration under the friction energy consumption of the damping particles for vibration reduction.

[0022] When the vibration sensor detects that the vibration amount caused by the rotation of the lateral support guide roller is less than the set value V2, the pressure relief valve is controlled to open and release the pressure, so that the installation piston is reset under the drive of the limit spring.

[0023] The driving mechanism adopts a chain conveyor, and the fixed support member is fixedly installed on the transmission chain of the chain conveyor through a corresponding installation rod.

[0024] Advantages of the invention:

[0025] 1) The present invention ensures uniform conveying of the rebar material by means of an opening support provided by a fixed support member and an adsorption-fixing method provided by a magnet. A transverse guide roller supports the front side of the spraying section of the rebar material, thereby effectively preventing excessive sagging and deformation of the sprayed section. The inner hole of a longitudinal limiting cylinder then radially limits the rebar material to control the vibration amplitude generated when the rebar material leaves the magnet member within a reasonable range. This ensures both uniform conveying of the rebar material and maintaining a low vibration level during uniform conveying, preventing the rebar material from excessively deviating from the designed optimal spraying position, thereby effectively ensuring uniform spraying of the coating on the rebar surface.

[0026] 2) The longitudinal limit cylinder of the invention is equipped with a vibration damping mechanism. When the vibration sensor detects that the vibration generated by the rotation of the transverse support guide roller is greater than the set value V1, it can be determined that the steel bar material is in a state of high vibration. At this time, the external air compressor is controlled to inject high-pressure gas into the drive chamber to drive each mounting piston toward the inner hole of the longitudinal limit cylinder, so that each supporting ball abuts the surface of the steel bar, thereby transmitting the vibration of the steel bar to the longitudinal limit cylinder. The friction energy dissipation of the vibration damping particles effectively reduces vibration. This further overcomes the vibration generated by the steel bar material when it leaves the magnet, and further effectively ensures the uniformity of the spray coating on the steel bar surface.

[0027] 3) When the vibration sensor detects that the vibration generated by the rotation of the lateral support roller is less than a set value V2, the pressure relief valve is controlled to open and release pressure, causing the mounting piston to return to its original position under the drive of the limit spring. This effectively and reliably controls the vibration of the rebar material within a low range without affecting the uniform conveying speed of the rebar material and reducing the wear between the support balls and the rebar material, thereby ensuring the practical effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a process flow chart of the steel bar surface coating spraying method.

[0029] Figure 2 Schematic diagram of the structure of the coating spraying equipment of the invention.

[0030] Figure 3 Schematic diagram of the structure of the spraying component.

[0031] Figure 4 for Figure 2 A partial enlarged view of part A in .

[0032] Figure 5 It is a structural diagram of a vibration reduction mechanism provided on the longitudinal limiting cylinder.

[0033] Figure 6 This is a structural diagram of a vibration reduction cavity filled with damping particles for vibration reduction.

[0034] Figure 7 This is a diagram showing the invented coating spraying equipment being installed in a container.

[0035] In the accompanying drawings: spraying assembly 1, fixed frame 101, nozzle 102, residual material collection hopper 103, horizontal material support guide roller 2, longitudinal limit cylinder 3, feeding assembly 4, supporting frame 401, fixed support member 402, driving mechanism 403, magnet member 404, discharging assembly 5, vibration reduction chamber 601, driving chamber 602, damping particles for vibration reduction 603, connecting pipe 604, mounting piston 605, supporting ball 606, fixed rod 607, limit spring 608, vibration sensor 7, inflation tube 8, pressure relief valve 9, mounting rod 10. DETAILED DESCRIPTION

[0036] In order to facilitate understanding by those skilled in the art, the structure of the invention is further described in detail with reference to the embodiments and the accompanying drawings:

[0037] refer to Figure 1-7 , a method for spraying steel bar surface coating based on coating spraying equipment,

[0038] The coating spraying equipment includes:

[0039] The spraying assembly 1 includes a fixed frame 101 and a plurality of spray heads 102 fixedly mounted on the fixed frame 101. A plurality of transverse material guide rollers 2 for supporting the steel bars and at least one longitudinal limiting cylinder 3 for vibration reduction are rotatably mounted side by side on the fixed frame 101 on the feeding end side of the spraying assembly 1. A gap is formed between the inner hole of the longitudinal limiting cylinder 3 and the steel bar material.

[0040] The feeding assembly 4 includes a support frame 401 fixedly arranged on one side of the feeding end of the spraying assembly 1, and a plurality of corresponding fixed support members 402 are movably arranged side by side on the support frame 401. The fixed support members 402 circulate through the feeding end of the spraying assembly 1 under the drive of the corresponding driving mechanism 403. The fixed support members 402 are respectively provided with openings for supporting steel bars facing upward, and corresponding magnet members 404 are respectively fixedly installed at the openings of the fixed support members 402;

[0041] The spraying method of the steel bar surface coating comprises the following specific steps:

[0042] S1, the external feeding equipment delivers the steel bar material to the opening of the cyclically moving fixed support member 402, and the magnet member 404 at the opening of the fixed support member 402 adsorbs and fixes the steel bar material;

[0043] S2, under the drive of the driving mechanism 403, the steel bar material moves along with the fixed support member 402 toward the feeding end side of the spray assembly 1. When the fixed support member 402 leaves the feeding end side of the spray assembly 1, the magnet member 404 is disconnected from the steel bar material, and the steel bar material continues to move toward the feeding end side of the spray assembly 1;

[0044] S3, after the steel bar material passes through the transverse material support guide roller 2, it passes through the inner hole of the longitudinal limiting cylinder 3, and then enters the position of the nozzle 102 of the spraying assembly 1 for coating spraying operation. The inner hole of the longitudinal limiting cylinder 3 limits the vibration amplitude of the steel bar material.

[0045] The present invention ensures uniform conveying of the rebar material by means of the opening support of the fixed support member 402 and the adsorption fixation of the magnet member 404. The transverse support guide roller 2 supports the front side of the spraying section of the rebar material, thereby effectively preventing excessive sagging and deformation of the spraying section of the rebar material. The inner hole of the longitudinal limiting cylinder 3 then radially limits the rebar material to control the vibration amplitude generated when the rebar material leaves the magnet member 404 within a reasonable range. This ensures uniform conveying of the rebar material and keeps the vibration of the uniformly conveyed rebar material within a low range, preventing the rebar material from excessively deviating from the designed optimal spraying position, thereby effectively ensuring uniform spraying of the coating on the rebar surface.

[0046] After step S3, step S4 is further included, wherein the coated steel bar material is discharged along the discharge end of the spraying assembly 1 and discharged outward through the corresponding discharge assembly 5. The discharge assembly 5 used in step S4 corresponds to the position of the feed assembly 4 and has the same structure as the feed assembly 4.

[0047] There are three spray heads 102, each staggered 120 degrees from the fixed frame 101. A residual material collection hopper 103 is provided outside the discharge end of each of the three spray heads 102. The residual material collection hopper 103 is connected to the air inlet of an external bag filter. The residual coating material generated during the coating spraying operation in step S3 is collected by the residual material collection hopper 103 and transferred to the external bag filter for filtration and recovery.

[0048] A corresponding vibration damping mechanism is provided in the longitudinal limiting cylinder 3 , and a vibration sensor 7 for detecting the vibration amount of the transverse material supporting guide roller 2 is fixedly installed on the mounting seat of the transverse material supporting guide roller 2 located on the front side of the longitudinal limiting cylinder 3 .

[0049] The vibration damping mechanism includes a vibration damping cavity 601 arranged on the periphery of the inner hole of the longitudinal limiting cylinder 3, a driving cavity 602 is arranged in the longitudinal limiting cylinder 3 outside the vibration damping cavity 601, and the vibration damping cavity 601 is filled with a plurality of corresponding damping particles 603 for vibration reduction, and the driving cavity 602 is connected to the external air compressor through a corresponding inflation pipe 8, and the inflation pipe 8 is connected to a pressure relief valve 9; a plurality of corresponding connecting pipes 604 are arranged at intervals in the vibration damping cavity 601, and the inner end portion of the connecting pipe 604 passes through the inner hole of the longitudinal limiting cylinder 3, and corresponding mounting pistons 605 are movably installed in the connecting pipes 604, and corresponding support balls 606 are rollingly installed on the inner end surfaces of the mounting pistons 605, and corresponding fixing rods 607 are fixedly connected in the connecting pipes 604 outside the mounting pistons 605, and corresponding limiting springs 608 are fixedly connected between the fixing rods 607 and the mounting pistons 605.

[0050] In the step S3, when the vibration sensor 7 detects that the vibration amount generated by the rotation of the transverse material support guide roller 2 is greater than the set value V1, it can be judged that the steel material is in a large vibration state at this time. At this time, the external air compressor is controlled to inject high-pressure gas into the drive chamber 602 to drive each mounting piston 605 to move toward the inner hole side of the longitudinal limit cylinder 3, so that each supporting ball 606 respectively abuts against the surface of the steel material to transfer the vibration amount of the steel material to the longitudinal limit cylinder 3, and effectively reduce vibration under the friction energy consumption of the damping particles 603 for vibration reduction.

[0051] The longitudinal limiting cylinder 3 of the present invention is provided with a vibration damping mechanism. When the vibration sensor 7 detects that the vibration generated by the rotation of the transverse support guide roller 2 is greater than the set value V1, it can be determined that the steel bar material is in a state of high vibration. At this time, the external air compressor is controlled to inject high-pressure gas into the drive chamber 602 to drive each mounting piston 605 toward the inner hole of the longitudinal limiting cylinder 3, so that each supporting ball 606 respectively abuts the surface of the steel bar, thereby transmitting the vibration of the steel bar to the longitudinal limiting cylinder 3, effectively reducing vibration under the friction energy dissipation of the vibration damping particles 603. This further overcomes the vibration generated by the steel bar material when it leaves the magnet member 404, and further effectively ensures the uniformity of the spray coating on the steel bar surface.

[0052] When the vibration sensor 7 detects that the vibration generated by the rotation of the transverse support guide roller 2 is less than the set value V2, the pressure relief valve 9 is controlled to open and release pressure, causing the mounting piston 605 to return to its original position under the drive of the limit spring 608. This effectively and reliably controls the vibration of the steel bar material within a low range without affecting the uniform speed of the steel bar material and reducing the wear between the support ball 606 and the steel bar material, thereby ensuring the practical effect of the present invention.

[0053] The driving mechanism 403 adopts a chain conveyor, and the fixed support member 402 is fixedly installed on the transmission chain of the chain conveyor through the corresponding installation rod 10.

[0054] The above is only a preferred embodiment of the invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the invention. These improvements and modifications should also be regarded as within the scope of protection of the invention.

Claims

1. A method for spraying a coating on a steel bar surface using a coating spraying device, characterized in that: The coating spraying equipment includes: A spraying assembly (1) comprises a fixed frame (101) and a plurality of spray heads (102) fixedly mounted on the fixed frame (101); a plurality of transverse material guide rollers (2) for supporting steel bars and at least one longitudinal limiting cylinder (3) for vibration reduction are rotatably mounted side by side on the fixed frame (101) on the feeding end side of the spraying assembly (1); a gap is formed between the inner hole of the longitudinal limiting cylinder (3) and the steel bar material; A feeding assembly (4) comprises a support frame (401) fixedly arranged on one side of the feeding end of the spraying assembly (1), a plurality of corresponding fixed support members (402) being movably arranged side by side on the support frame (401), the fixed support members (402) circulating through one side of the feeding end of the spraying assembly (1) under the drive of a corresponding driving mechanism (403), the fixed support members (402) respectively being provided with openings for supporting steel bars upward, and corresponding magnet members (404) being fixedly installed at the openings of the fixed support members (402); The spraying method of the steel bar surface coating comprises the following specific steps: S1, external feeding equipment transports the steel bar material to the opening of the cyclically moving fixed support member (402), and the magnet member (404) at the opening of the fixed support member (402) adsorbs and fixes the steel bar material; S2, under the drive of the driving mechanism (403), the steel bar material moves along with the fixed support member (402) toward the feeding end side of the spraying assembly (1); when the fixed support member (402) leaves the feeding end side of the spraying assembly (1), the magnet member (404) is disconnected from the steel bar material, and the steel bar material continues to move toward the feeding end side of the spraying assembly (1); S3, after the steel bar material passes through the transverse support guide roller (2), it passes through the inner hole of the longitudinal limiting cylinder (3), and then enters the position of the spray head (102) of the spraying assembly (1) for coating spraying operation, and the inner hole of the longitudinal limiting cylinder (3) limits the vibration amplitude of the steel bar material; A corresponding vibration damping mechanism is provided in the longitudinal limiting cylinder (3), and a vibration sensor (7) for detecting the vibration amount of the transverse material supporting guide roller (2) is fixedly installed on the mounting seat of the transverse material supporting guide roller (2) located on the front side of the longitudinal limiting cylinder (3); In step S3, when the vibration sensor (7) detects that the vibration amount generated by the rotation of the transverse support guide roller (2) is greater than the set value V1, the vibration reduction mechanism starts to perform a vibration reduction operation on the steel bar material.

2. The method for spraying a steel bar surface coating based on a coating spraying device according to claim 1, characterized in that: The step S3 further includes a step S4, wherein the steel bar material after the coating spraying is discharged along one side of the discharge end of the spraying component (1) and discharged outward through the corresponding discharge component (5).

3. The method for spraying a steel bar surface coating based on a coating spraying device according to claim 2, characterized in that: The discharge assembly (5) used in step S4 corresponds in position to the feed assembly (4) and has the same structure as the feed assembly (4).

4. The method for spraying a coating on a steel bar surface based on a coating spraying device according to claim 1, wherein: There are three nozzles (102), which are staggered and arranged on the fixed frame (101) at an equal angle of 120 degrees, and a residual material collection hopper (103) is respectively provided on the outer side of the discharge end of the three nozzles (102), and the residual material collection hopper (103) is connected to the air inlet end of the external bag filter.

5. A method for spraying a steel bar surface coating based on a coating spraying device according to claim 4, characterized in that: The coating residue generated during the coating spraying operation in step S3 is collected by the residue collection hopper (103) and transmitted to an external bag filter for filtration and recovery.

6. The method for spraying a coating on a steel bar surface based on a coating spraying device according to claim 1, characterized in that: The vibration damping mechanism comprises a vibration damping cavity (601) arranged on the periphery of the inner hole of the longitudinal limiting cylinder (3), a driving cavity (602) is arranged in the longitudinal limiting cylinder (3) outside the vibration damping cavity (601), a plurality of corresponding damping particles (603) for vibration damping are filled in the vibration damping cavity (601), the driving cavity (602) is connected to an external air compressor through a corresponding inflation pipe (8), and a pressure relief valve (9) is connected to the inflation pipe (8); a plurality of corresponding connecting pipes (603) are arranged at intervals in the vibration damping cavity (601) 04), the inner end portion of the connecting tube (604) passes through the inner hole of the longitudinal limiting cylinder (3), and the corresponding mounting pistons (605) are movably installed in the connecting tube (604), and the inner end surfaces of the mounting pistons (605) are rollingly installed with corresponding supporting balls (606), and the connecting tubes (604) outside the mounting pistons (605) are fixedly connected with corresponding fixing rods (607), and corresponding limiting springs (608) are fixedly connected between the fixing rods (607) and the mounting pistons (605).

7. A method for spraying a coating on a steel bar surface based on a coating spraying device according to claim 6, characterized in that: In step S3, when the vibration sensor (7) detects that the vibration amount generated by the rotation of the transverse support guide roller (2) is greater than the set value V1, it can be determined that the steel bar material is in a state of large vibration. At this time, the external air compressor is controlled to inject high-pressure gas into the drive chamber (602) to drive each mounting piston (605) to move toward the inner hole side of the longitudinal limit cylinder (3), so that each supporting ball (606) respectively abuts against the surface of the steel bar material, so as to transmit the vibration amount of the steel bar material to the longitudinal limit cylinder (3), and effectively reduce vibration under the friction energy consumption of the damping particles (603) for vibration reduction.

8. The method for spraying a coating on a steel bar surface based on a coating spraying device according to claim 7, characterized in that: When the vibration sensor (7) detects that the vibration amount generated by the rotation of the lateral support guide roller (2) is less than the set value V2, the pressure relief valve (9) is controlled to open and release the pressure, so that the mounting piston (605) is reset under the drive of the limit spring (608).

9. The method for spraying a coating on a steel bar surface based on a coating spraying device according to claim 1, characterized in that: The driving mechanism (403) adopts a chain conveyor, and the fixed support member (402) is fixedly mounted on the transmission chain of the chain conveyor through a corresponding mounting rod (10).

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