Rotary spraying equipment control method for pipeline spraying

Abstract

According to the control method of the rotary spraying equipment for pipeline spraying, the rotary spraying equipment comprises a rotating mechanism, a lifting mechanism and a spray gun mechanism, the rotating mechanism is arranged on the lifting mechanism, the spray gun mechanism is arranged on the rotating mechanism, and the lifting mechanism is used for adjusting the height of the spray gun mechanism. The rotating mechanism is used for driving the spray gun mechanism to rotate; a sprayed pipeline is arranged on a V-shaped pipeline bracket, and the pipeline bracket is arranged on the conveying belt. Based on the pipeline basic parameters, the spraying parameters and the spraying gun mechanism parameters, control parameters are determined, the control parameters comprise the lifting height of a lifting mechanism, the rotating speed of a rotating mechanism and the conveying speed of a sprayed pipeline, and the lifting mechanism is adjusted according to the lifting height of the lifting mechanism; and the rotating mechanism is controlled to rotate according to the rotating speed, and meanwhile the conveying belt is controlled to enable the sprayed pipeline to move according to the conveying speed.

Description

Technical Field

[0001] The invention relates to a spraying equipment control method, in particular to a rotary spraying equipment control method for pipeline spraying. Background Art

[0002] When spraying the pipeline, the spray gun mechanism is set on a rotating mechanism, and then the rotating mechanism is set on a lifting mechanism. These mechanisms are all existing technologies. When spraying, the lifting mechanism transports the spray gun to a specified height, and the pipeline is sprayed by rotating the spray gun and controlling the movement of the lifting mechanism. This spray control method has serious paint overspray, resulting in paint waste, and the flatness of the sprayed surface is poor.

[0003] Therefore, in order to solve the above technical problems, a new technical means is proposed. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a control method for a rotary spraying equipment for pipe spraying, which determines the height of the lifting mechanism, the rotation speed of the rotating mechanism and the transmission speed of the pipe based on the geometric parameters of the pipe to be sprayed, the lifting mechanism and the working parameters of the spray gun mechanism, and controls the rotation of the rotating mechanism according to the rotation speed while making the pipe move according to the transmission speed during spraying, thereby effectively avoiding the overspray phenomenon that exists in the traditional technology of spraying only by the movement of the spray gun, saving paint and ensuring the spraying quality.

[0005] The present invention provides a control method for a rotary spraying device for pipe spraying, wherein the rotary spraying device comprises a rotating mechanism, a lifting mechanism and a spray gun mechanism, wherein the rotating mechanism is arranged on the lifting mechanism, the spray gun mechanism is arranged on the rotating mechanism, the lifting mechanism is used to adjust the height of the spray gun mechanism, and the rotating mechanism is used to drive the spray gun mechanism to rotate; the pipe to be sprayed is arranged on a V-shaped pipe bracket and the pipe bracket is arranged on a conveyor belt;

[0006] The control method comprises the following steps:

[0007] S1. Determine the basic parameters of the pipe to be sprayed, including the pipe diameter, the height of the pipe bracket from the ground, and the angle of the pipe bracket.

[0008] S2. Determine the spraying parameters of the sprayed pipe, including dry film thickness, solid content, paint rate and pipe surface area;

[0009] S3. Determine the spray gun mechanism parameters, including nozzle width, overlap coefficient and effective width;

[0010] S4. Determine control parameters based on basic pipeline parameters, spraying parameters and spray gun mechanism parameters, the control parameters include the lifting height of the lifting mechanism, the rotation speed of the rotating mechanism and the transmission speed of the sprayed pipeline, and adjust the lifting mechanism according to the lifting height of the lifting mechanism, and control the rotating mechanism to rotate at the rotation speed while controlling the conveyor belt to move the sprayed pipeline at the transmission speed.

[0011] Furthermore, the rising height of the lifting mechanism is calculated by the following method:

[0012]

[0013] Wherein: h represents the rising height of the lifting mechanism, h1 represents the height of the pipe bracket from the ground, D is the pipe diameter, α is the angle of the pipe bracket, and h4 is the height of the center of the spray ring from the ground.

[0014] Furthermore, the conveying speed of the sprayed pipe is determined by the following method:

[0015] Among them, t is the actual spraying time, and V is the conveying speed of the sprayed pipe;

[0016] in: Among them, M is the total paint consumption of the sprayed pipeline, y represents the number of nozzles of the spray gun mechanism, and Q is the actual flow rate of each nozzle.

[0017] Further, the total amount of paint consumption is determined by the following method:

[0018] Among them, S is the surface area of ​​the sprayed pipe, ε is the dry film thickness of the sprayed pipe, η2 is the paint rate, and η1 is the solid content.

[0019] Furthermore, the actual flow rate of each nozzle is determined by the following method:

[0020] Among them, Q0 is the detected flow rate of the nozzle, P is the actual atomization pressure of the nozzle, and P0 is the theoretical atomization pressure of the nozzle.

[0021] Further, the rotation speed of the rotating mechanism is determined by the following method:

[0022] Among them, V R is the rotation speed of the rotating mechanism, V1 is the travel speed of the nozzle, L C is the circumference of the nozzle's travel trajectory;

[0023] in: Wherein, b is the spraying distance;

[0024] t1 is the spraying time required to go around the spray pipe once.

[0025] Further, the spraying time t1 is determined by the following method:

[0026] W is the effective width of the spray gun, and V is the conveying speed of the pipeline;

[0027] W=W1×(1-A), W1 is the width of the spray gun mechanism, and A is the overlap coefficient.

[0028] Beneficial effects of the present invention: Through the present invention, the height of the lifting mechanism, the rotation speed of the rotating mechanism and the transmission speed of the pipeline are determined based on the geometric parameters of the sprayed pipeline, the lifting mechanism and the working parameters of the spray gun mechanism, and during spraying, the rotation of the rotating mechanism is controlled according to the rotation speed while the pipeline is moved according to the transmission speed, thereby effectively avoiding the overspray phenomenon that exists in the traditional technology of spraying only by the movement of the spray gun, saving paint and ensuring the spraying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 It is a schematic diagram of the structure of the present invention.

[0031] Figure 2 It is a schematic diagram of the pipeline bracket structure of the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below:

[0033] The present invention provides a control method for a rotary spraying device for pipe spraying, wherein the rotary spraying device comprises a rotating mechanism 1, a lifting mechanism 5 and a spray gun mechanism 4, wherein the rotating mechanism is arranged on the lifting mechanism, and the spray gun mechanism is arranged on the rotating mechanism, wherein the lifting mechanism is used to adjust the height of the spray gun mechanism, and the rotating mechanism is used to drive the spray gun mechanism 4 to rotate; a pipe 3 to be sprayed is arranged on a V-shaped pipe bracket 2, and the pipe bracket is arranged on a conveyor belt 6; wherein the lifting mechanism, the rotating mechanism and the spray gun mechanism can all adopt existing technologies;

[0034] The control method comprises the following steps:

[0035] S1. Determine the basic parameters of the pipe to be sprayed, including the pipe diameter, the height of the pipe bracket from the ground, and the angle of the pipe bracket.

[0036] S2. Determine the spraying parameters of the sprayed pipe, including dry film thickness, solid content, paint rate and pipe surface area;

[0037] S3. Determine the spray gun mechanism parameters, including nozzle width, overlap coefficient and effective width;

[0038] S4. Determine the control parameters based on the basic parameters of the pipeline, the spraying parameters and the spray gun mechanism parameters, the control parameters include the lifting height of the lifting mechanism, the rotation speed of the rotating mechanism and the transmission speed of the sprayed pipeline, and adjust the lifting mechanism according to the lifting height of the lifting mechanism, and control the rotating mechanism to rotate according to the rotation speed while controlling the conveyor belt to move the sprayed pipeline according to the transmission speed. Through the above method, the height of the lifting mechanism, the rotation speed of the rotating mechanism and the transmission speed of the pipeline are determined based on the geometric parameters of the sprayed pipeline, the lifting mechanism and the working parameters of the spray gun mechanism, and the rotating mechanism is controlled to rotate according to the rotation speed while the pipeline is moved according to the transmission speed during spraying, thereby effectively avoiding the overspray phenomenon that only sprays by the movement of the spray gun in the traditional technology, saving paint, and ensuring the spraying quality.

[0039] In this embodiment, the rising height of the lifting mechanism is calculated by the following method:

[0040]

[0041] Wherein: h represents the rising height of the lifting mechanism, h1 represents the height of the pipe bracket from the ground, D is the pipe diameter, α is the angle of the pipe bracket, and h4 is the height of the center of the spray ring from the ground.

[0042] In this embodiment, the conveying speed of the sprayed pipe is determined by the following method:

[0043] Among them, t is the actual spraying time, and V is the conveying speed of the sprayed pipe;

[0044] in: Among them, M is the total paint consumption of the sprayed pipeline, y represents the number of nozzles of the spray gun mechanism, and Q is the actual flow rate of each nozzle.

[0045] In this embodiment, the total amount of paint consumption is determined by the following method:

[0046] Among them, S is the surface area of ​​the sprayed pipe, ε is the dry film thickness of the sprayed pipe, η2 is the paint rate, and η1 is the solid content.

[0047] Determine the actual flow rate of each nozzle as follows:

[0048] Among them, Q0 is the detected flow rate of the nozzle, P is the actual atomization pressure of the nozzle, and P0 is the theoretical atomization pressure of the nozzle.

[0049] In this embodiment, the rotation speed of the rotating mechanism is determined by the following method:

[0050] Among them, V R is the rotation speed of the rotating mechanism, V1 is the travel speed of the nozzle, L C is the circumference of the nozzle's travel trajectory;

[0051] in: Wherein, b is the spraying distance;

[0052] t1 is the spraying time required to go around the spray pipe once.

[0053] Determine the spraying time t1 by the following method:

[0054] W is the effective width of the spray gun, and V is the conveying speed of the pipeline;

[0055] W=W1×(1-A), W1 is the width of the spray gun mechanism, and A is the overlap coefficient.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A control method for a rotary spraying device for pipe spraying, Features: The rotary spraying equipment comprises a rotating mechanism, a lifting mechanism and a spray gun mechanism, wherein the rotating mechanism is arranged on the lifting mechanism, the spray gun mechanism is arranged on the rotating mechanism, the lifting mechanism is used to adjust the height of the spray gun mechanism, and the rotating mechanism is used to drive the spray gun mechanism to rotate; the sprayed pipe is arranged on a V-shaped pipe bracket and the pipe bracket is arranged on a conveyor belt; The control method comprises the following steps: S1. Determine the basic parameters of the pipe to be sprayed, including the pipe diameter, the height of the pipe bracket from the ground, and the angle of the pipe bracket. S2. Determine the spraying parameters of the sprayed pipe, including dry film thickness, solid content, paint rate and pipe surface area; S3. Determine the spray gun mechanism parameters, including nozzle width, overlap coefficient and effective width; S4. Determine control parameters based on basic pipeline parameters, spraying parameters and spray gun mechanism parameters, the control parameters include the lifting height of the lifting mechanism, the rotation speed of the rotating mechanism and the transmission speed of the sprayed pipeline, and adjust the lifting mechanism according to the lifting height of the lifting mechanism, and control the rotating mechanism to rotate at the rotation speed while controlling the conveyor belt to move the sprayed pipeline at the transmission speed.

2. According to the control method of the rotary spraying equipment for pipeline spraying according to claim 1, Features: The rising height of the lifting mechanism is calculated by the following method: Where: h represents the rising height of the lifting mechanism, h 1 It represents the height of the pipe bracket from the ground, D is the pipe diameter, α is the angle of the pipe bracket, and h 4 It is the height of the spray ring center from the ground.

3. According to the control method of the rotary spraying equipment for pipeline spraying according to claim 1, Features: The conveying speed of the pipe being sprayed is determined by the following method: Among them, t is the actual spraying time, and V is the conveying speed of the sprayed pipe; in: Among them, M is the total paint consumption of the sprayed pipeline, y represents the number of nozzles of the spray gun mechanism, and Q is the actual flow rate of each nozzle.

4. The control method of the rotary spraying equipment for pipe spraying according to claim 3, Features: Determine the total amount of paint consumed by: Where S is the surface area of ​​the sprayed pipe, ε is the dry film thickness of the sprayed pipe, η 2 is the painting rate, η 1 For the solid content.

5. The control method of the rotary spraying equipment for pipeline spraying according to claim 3, Features: Determine the actual flow rate of each nozzle as follows: Among them, Q 0 is the detection flow rate of the nozzle, P is the actual atomization pressure of the nozzle, P 0 It is the theoretical atomization pressure of the nozzle.

6. The control method of the rotary spraying equipment for pipe spraying according to claim 1, Features: The rotation speed of the rotating mechanism is determined by: Among them, V R is the rotation speed of the rotating mechanism, V 1 is the travel speed of the nozzle, L C is the circumference of the nozzle's travel trajectory; in: Wherein, b is the spraying distance; t 1 It is the spraying time required to spray one circle around the spray pipe.

7. The control method of the rotary spraying equipment for pipe spraying according to claim 6, Features: The spraying time t is determined by the following method 1 : W is the effective width of the spray gun, and V is the conveying speed of the pipeline; W=W 1 ×(1-A),W 1 is the width of the spray gun mechanism, and A is the overlap coefficient.

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