Steel pipe interior paint spraying production line

Abstract

The invention provides a steel pipe interior paint spraying production line, and relates to a steel pipe paint spraying production line. Comprising a variable-pitch branch pipe mechanism, an in-pipe paint spraying mechanism is arranged at the pipe outlet end of the variable-pitch branch pipe mechanism, a lifting mechanism is arranged at the tail end of the in-pipe paint spraying mechanism, and a pipe drying mechanism is arranged at the pipe outlet end of the lifting mechanism; full automation of spraying of the inner wall of the steel pipe is achieved, and the working efficiency is improved; according to the device, full automation of simultaneous spraying of the inner walls of the multiple pipes is achieved, and the working efficiency is improved; spraying of the inner wall of the long pipe is achieved, and inner paint spraying of steel pipes of various lengths can be freely achieved; according to the spraying device, the spraying thickness of the inner wall of the long pipe is controlled, spraying is uniform, and the spraying quality is improved.

Description

Technical Field

[0001] The invention relates to a steel pipe painting production line.

[0002] Specifically, it relates to a steel pipe internal spray paint production line. Background Art

[0003] As product quality gradually improves, steel pipes will be painted internally according to demand, and the inner wall of the steel pipe will be dried after spraying. From the painting station to the drying station, the height and quantity of the steel pipes need to be monitored to better realize the automation of the entire process. At present, the connection between these two stations needs to be completed manually.

[0004] Secondly, the inner wall spraying station of the steel pipe mainly relies on the inner pipe spraying machine, and the disadvantages of the inner pipe spraying machine are: First: The length of the spraying tube is limited, and it is only suitable for spraying the inner wall of a short small tube; Second: It needs to be sprayed manually one by one, and the work efficiency is low: Third: The thickness and uniformity of the spraying need to rely on the staff, and the quality of the spraying is difficult to grasp. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional technology and provide a steel pipe internal painting production line.

[0006] The objective of the present invention is achieved through the following technical measures: a steel pipe internal painting production line, comprising a variable-distance branching mechanism, characterized in that: an internal pipe painting mechanism is provided at the pipe outlet end of the variable-distance branching mechanism, a lifting mechanism is provided at the end of the internal pipe painting mechanism, and a pipe drying mechanism is provided at the pipe outlet end of the lifting mechanism.

[0007] As an improvement, the in-tube paint spraying mechanism includes two steel pipe placing beams, each of which is provided with a moving chain, and the moving chain is provided with a number of steel pipe placing seats with equal distances. A steel pipe is placed on the two Y-direction steel pipe placing seats, and at least two groups of paint spraying components are sequentially provided at the end face position of the steel pipe along the X-direction of movement of the steel pipe.

[0008] As a further improvement, two groups of the paint spraying components are included, each of which includes a paint spraying mechanism located at one end of the steel pipe and a residual paint recovery mechanism located at the other end of the steel pipe, and the paint spraying mechanism and the residual paint recovery mechanism in the two groups of the paint spraying components are arranged in reverse.

[0009] As a further improvement, the paint spraying mechanism includes a paint spraying machine frame, a paint spraying rail is provided on the paint spraying machine frame, a paint spraying seat is provided on the paint spraying rail, a paint spraying bracket is provided on the paint spraying seat, at least one paint spraying device is provided on the paint spraying bracket, and a paint spraying tightening cylinder is provided at one end of the paint spraying rail away from the steel pipe.

[0010] As a further improvement, the paint spraying device includes a paint spraying body fixedly connected to the paint spraying bracket, the paint spraying body is provided with a cavity, a paint spraying nozzle is provided at one end of the paint spraying body close to the steel pipe, an air intake pipe is also provided on the paint spraying body, the air intake pipe passes through the cavity and is connected to the hollow interior of the paint spraying nozzle, and a paint inlet is also provided above the paint spraying body, and the paint inlet extends to be connected to the cavity.

[0011] As a further improvement, the residual paint recovery mechanism includes a recovery frame, a recovery guide rail is provided on the recovery frame, a recovery seat is slidably provided on the recovery guide rail, a recovery bracket is provided on the recovery seat, at least one recovery nozzle is provided on the recovery bracket, the recovery nozzle and the recovery bracket are installed by a linear bearing, a recovery tube is installed on the tail of each recovery nozzle, a recovery tightening cylinder is provided on the end of the recovery guide rail away from the steel pipe, and a buffer spring is also provided between each recovery nozzle and the recovery bracket.

[0012] As a further improvement, the lifting mechanism includes a lifting frame, which is arranged at an angle, and two bottom lifting sprockets are provided at the bottom of the lifting frame, and two top lifting sprockets corresponding to the bottom lifting sprockets are provided at the top of the lifting frame, and a lifting chain is provided between the bottom lifting sprockets and the top lifting sprockets, and a plurality of lifting seats are fixed on the lifting chain, and the distance between each lifting seat is equal, and a lifting beam is provided between the two horizontally arranged lifting seats, and a chain tensioning adjustment device is provided on the lifting frame, and a tube size adjustment plate is also provided on the lifting frame.

[0013] As a further improvement, the chain tensioning and adjusting device comprises a tensioning wheel mounting frame rotatably mounted on the lifting frame, a tensioning wheel is provided at the free end of the tensioning wheel mounting frame, and the tensioning wheel is arranged on the inner side of the lifting chain.

[0014] As a further improvement, the tube size adjustment plate includes a rectangular plate body, the plate body is provided with at least two adjustment long holes, the adjustment long holes are arranged perpendicular to the lifting frame, and the lifting frame and the plate body are connected by a connecting piece passing through the adjustment long holes.

[0015] As a further improvement, the lifting beam includes a lifting beam body, an end of the lifting beam body away from the lifting chain is smaller than an end connected to the lifting chain, an end of the lifting beam body moving along the lifting chain is a vertical surface, and the opposite surface is an inclined surface.

[0016] Due to the adoption of the above technical solution, compared with the prior art, the advantages of the present invention are: First: The present invention realizes the full automation of the steel pipe inner wall spraying, thus improving the work efficiency; Second: The present invention realizes the full automation of spraying the inner walls of multiple pipes at the same time, thus improving the work efficiency; Third: The present invention realizes the spraying of the inner wall of the long tube, and can freely realize the internal spraying of steel tubes of various lengths; Fourthly, the present invention realizes the control of the spraying thickness of the inner wall of the long tube and the spraying is uniform, thereby improving the quality of the spraying.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a schematic diagram of the structure of the present invention; Attached Figure 2 It is a structural schematic diagram of another aspect of the present invention; Attached Figure 3 is a schematic diagram of the in-tube paint spraying mechanism of the present invention; Attached Figure 4 is a schematic diagram of the in-tube paint spraying mechanism of the present invention from another angle; Attached Figure 5 It is a structural schematic diagram of the residual paint recovery mechanism of the present invention; Attached Figure 6 It is a structural schematic diagram of another direction of the residual paint recovery mechanism of the present invention; Attached Figure 7 It is a structural schematic diagram of the paint spraying mechanism of the present invention; Attached Figure 8 It is a structural schematic diagram of the paint spraying mechanism of the present invention from another angle; Attached Fig. 9 It is a structural schematic diagram of the lifting mechanism of the present invention; Attached Fig.10 It is a structural schematic diagram of the lifting mechanism of the present invention from another angle; Attached Fig.11 A schematic diagram of the structure of a tube body of a certain size according to the present invention; Attached Fig.12 A schematic diagram of the structure of a tube body of another size lifted by the present invention; Attached Fig.13 A schematic structural diagram of the lifting beam described in the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] Example: As attached Figure 1 -Attached Figure 6 As shown: a steel pipe internal painting production line, including a variable-distance branch mechanism 100, a pipe internal painting mechanism 200 is provided at the pipe outlet end of the variable-distance branch mechanism 100, a lifting mechanism 300 is provided at the end of the pipe internal painting mechanism 200, and a pipe drying mechanism 500 is provided at the pipe outlet end of the lifting mechanism 300.

[0024] The in-tube paint spraying mechanism 200 includes two parallel steel pipe placing beams 201, each of the steel pipe placing beams 201 is provided with a moving chain 202, and the moving chain 202 is provided with a plurality of steel pipe placing seats 203 with equal distances. A steel pipe 400 is placed on the two Y-direction steel pipe placing seats 203, and two groups of paint spraying components are sequentially provided at the end surface position of the steel pipe 400 along the X-direction of movement of the steel pipe 400. Of course, the number of the paint spraying components can be increased according to actual needs.

[0025] The paint spraying assembly includes a paint spraying mechanism located at one end of the steel pipe 400 and a residual paint recovery mechanism 205 located at the other end of the steel pipe 400. The paint spraying mechanism 206 and the residual paint recovery mechanism 205 in the two groups of the paint spraying assemblies are arranged in reverse. The advantage of the reverse arrangement is that the inside of the steel pipe 400 can be evenly sprayed.

[0026] The paint spraying mechanism 206 includes a paint spraying machine frame 261, a paint spraying guide rail 262 is provided on the paint spraying machine frame 261, a paint spraying seat 263 is provided on the paint spraying guide rail 262, a paint spraying bracket 264 is provided on the paint spraying seat 263, six paint spraying devices 265 are provided on the paint spraying bracket 264 (the number can be set according to the needs of the production line), and a paint spraying tightening cylinder 266 is provided at one end of the paint spraying guide rail 262 away from the steel pipe 400.

[0027] The paint spraying device 265 includes a paint spraying body 2651 fixedly connected to the paint spraying bracket 264, the paint spraying body 2651 is provided with a cavity 2652, and a paint spraying nozzle 2653 is provided at one end of the paint spraying body 2651 close to the steel pipe 400, and the paint spraying nozzle 2653 is in the shape of a truncated cone with an outer diameter greater than an inner diameter. The paint spraying body 2651 is also provided with an air inlet pipe 2654, and the air inlet pipe 2654 passes through the cavity 2652 and is connected to the hollow interior of the paint spraying nozzle 2653. A paint inlet port 2655 is also provided above the paint spraying body 2651, and the paint inlet port 2655 extends and is connected to the cavity 2652; when the air inlet pipe 2654 takes in air, a negative pressure will be formed in the cavity 2652, and the negative pressure will suck the paint through the paint inlet port 2655 and spray it into the steel pipe 400 through the paint spraying nozzle 2653.

[0028] The residual paint recovery mechanism 205 includes a recovery frame 251, on which a recovery guide rail 252 is provided, on which a recovery seat 253 is slidably provided, on which a recovery seat 253 is provided, on which a recovery bracket 254 is provided, and on which six recovery nozzles 255 are provided, and between which the recovery nozzles 255 and the recovery bracket 254 are installed via a linear bearing 256, and the six recovery nozzles 255 and the six paint spray nozzles 2653 are respectively arranged at both ends of the steel pipe 400, and a recovery pipe 257 is installed on the tail of each recovery nozzle 255, and a recovery tightening cylinder 258 is provided at one end of the recovery guide rail 252 away from the steel pipe 400; a buffer spring 259 is provided between the recovery nozzle 255 and the recovery bracket 254.

[0029] The distance between the centers of the steel pipes 400 placed on the two steel pipe placement seats 203 is the distance between the centers of the two paint spray nozzles 2653 or the two recovery nozzles 255 .

[0030] During painting, the steel pipe 400 is driven by the moving chain 202 to move to the corresponding position, that is, to the position where the paint spray nozzle 2653 and the recovery nozzle 255 correspond to the two ends of the steel pipe 400 (that is, the position of the first group of the paint spray components), and the steel pipe 400 is fixed by the paint spraying tightening cylinder 65 and the recovery tightening cylinder, the paint spraying nozzle 2653 sprays paint, and the recovery nozzle 255 recovers the remaining paint, and the first painting is completed. After the first painting is completed, the paint on the inner wall of the steel pipe 400 is close to the spray nozzle 2653. The thickness of one end of the paint nozzle 2653 is higher than that of the end close to the recovery nozzle 255. At this time, the movable chain 202 continues to move to move the steel pipe 400 to the position of the second group of the paint spraying components. The paint spraying nozzle 2653 sprays paint, and the recovery nozzle 255 recovers the remaining paint to complete the second painting. The second painting is performed on the steel pipe 400 close to the recovery nozzle 255 of the first painting. Therefore, the paint on the inner wall of the steel pipe 400 can be evenly sprayed and the entire inner wall can be guaranteed to be sprayed.

[0031] The function of the residual paint recovery mechanism 205 is to increase the spraying distance of the paint spraying mechanism 206 and recover the remaining paint at the same time. The residual paint recovery mechanism 205 is connected to the environmental protection treatment equipment to meet the requirements of environmental protection and also ensure the working environment of the staff.

[0032] The lifting mechanism 300 includes a lifting frame 301, and the lifting frame 301 is tilted, and the tilt angle can be set according to the needs of the actual production site. Two bottom lifting sprockets 302 are provided below the lifting frame 301, and two top lifting sprockets 303 corresponding to the bottom lifting sprockets 302 are provided above the lifting frame 301. A lifting chain 304 is provided between the bottom lifting sprocket 302 and the top lifting sprocket 303, and a plurality of lifting seats 305 are fixed on the lifting chain 304, each of which The distances between the two lifting seats 305 are equal, and the number of the lifting seats 305 is set according to the actual needs of the production line. A lifting beam 306 is provided between the two horizontally arranged lifting seats 305, and the distance between the two lifting beams 306 is the size of the diameter of the transport steel pipe 400; the lifting frame 301 is also provided with a motor 307, and the motor 307 is connected to the driving wheel 308 by power, and the driving wheel 308 is connected to the driven wheel 310 by power through a belt 309, and the driven wheel 310 is coaxially connected to the top lifting sprocket 303 by power.

[0033] The lifting frame 301 is also provided with a chain tensioning and adjusting device; the chain tensioning and adjusting device includes a tensioning wheel mounting frame 311 rotatably mounted on the lifting frame 301, a tensioning wheel 312 is provided at the free end of the tensioning wheel mounting frame 311, and the tensioning wheel 312 is arranged on the inner side of the lifting chain 304; the tensioning wheel 312 mounting frame 11 can rotate around the connection with the lifting frame 301, and the tension between the tensioning wheel 312 and the lifting chain 304 is adjusted by its rotation, thereby adjusting the tension of the lifting chain 304.

[0034] The lifting frame 301 is also provided with a tube size adjustment plate; the tube size adjustment plate includes a rectangular plate 313, and the plate 313 is provided with three adjustment holes 314, the adjustment holes 314 are arranged in a vertical direction with the lifting frame 301, and the lifting frame 301 and the plate 313 are connected by a connector passing through the adjustment holes 314; the tube size adjustment plate is used to adjust the diameter of the transported steel pipe 400, and the distance between the two lifting beams 306 can be adjusted by adjusting the position of the tube size adjustment plate, so as to meet the transportation of steel pipes 400 with different diameters, as shown in the attached figure. Figure 3 , Attachment Figure 4 Schematic diagram of two different positions of the tube size adjustment plate.

[0035] As attached Figure 5As shown, the lifting beam 306 includes a lifting beam body 316, and the end of the lifting beam body 316 away from the lifting chain 304 is smaller than the end connected to the lifting chain 304. The end of the lifting beam body 316 that moves along the lifting chain 304 is a vertical surface 320, and the opposite surface is an inclined surface 321; the lifting beam 306 also includes a nylon plate 317 arranged on the periphery of the lifting beam body 316, and the nylon plate 317 is located at the vertical surface and is provided with an extended protrusion 318. The setting of the protrusion 318 plays a role in blocking the steel pipe 400 and can prevent the steel pipe 400 from sliding off; the setting of the nylon plate 317 can protect the surface of the steel pipe 400 from being scratched, and it can be easily replaced after long-term friction damage to save cost. If the entire lifting beam 306 is made of nylon plate 317, it will increase the production cost of the equipment and reduce its service life.

[0036] The lifting frame 301 is also provided with a counter (not shown in the figure), so that counting can be performed while the steel pipes 400 are being transported.

[0037] The motor 307 drives the driving wheel 308 to rotate, and the driving wheel 308 drives the driven wheel 310 to rotate through the belt 309. The driven wheel 310 drives the top lifting sprocket 303 to rotate, and the top lifting sprocket 303 drives the lifting chain 304 to move, and the lifting chain 304 drives the lifting beam 306 to move. The transported steel pipe 400 is placed between the two lifting beams 306.

[0038] The pipe drying mechanism 500 includes a drying frame 501 , on which a drying chain 502 is disposed, and on which a plurality of steel pipe drying frames 503 are disposed, and between two of the steel pipe drying frames 503 , a steel pipe 400 is placed.

[0039] The working process of the present invention is: the steel pipe 400 passes through the variable-distance branch mechanism 100 (the variable-distance branch mechanism 100 here is a custom-made finished product, which will not be introduced in detail in the present invention), and after the distance is changed to a distance suitable for the in-pipe paint spraying mechanism 200, the in-pipe paint spraying mechanism 200 sprays paint on the inside of the steel pipe 400. After the painting is completed, the steel pipe 400 is transported to the pipe drying mechanism 500 for drying through the lifting mechanism 300.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe internal painting production line, comprising a variable-distance branching mechanism, characterized in that: the pipe outlet end of the variable-distance branching mechanism is provided with a pipe internal painting mechanism, the end of the pipe internal painting mechanism is provided with a lifting mechanism, and the pipe outlet end of the lifting mechanism is provided with a pipe drying mechanism.

2. A steel pipe internal painting production line according to claim 1, characterized in that: The in-tube paint spraying mechanism includes two steel pipe placing beams, each of which is provided with a moving chain, and the moving chain is provided with a number of steel pipe placing seats with equal distances. A steel pipe is placed on the two Y-direction steel pipe placing seats, and at least two groups of paint spraying components are sequentially provided at the end surface position of the steel pipe along the X-direction of movement of the steel pipe.

3. A steel pipe internal painting production line according to claim 2, characterized in that: It comprises two groups of the paint spraying components, wherein the paint spraying components comprise a paint spraying mechanism located at one end of the steel pipe and a residual paint recovery mechanism located at the other end of the steel pipe, and the paint spraying mechanisms and residual paint recovery mechanisms in the two groups of the paint spraying components are arranged in reverse.

4. A steel pipe internal painting production line according to claim 3, characterized in that: The paint spraying mechanism comprises a paint spraying machine frame, a paint spraying guide rail is arranged on the paint spraying machine frame, a paint spraying seat is arranged on the paint spraying guide rail, a paint spraying bracket is arranged on the paint spraying seat, at least one paint spraying device is arranged on the paint spraying bracket, and a paint spraying tightening cylinder is arranged on the end of the paint spraying guide rail away from the steel pipe.

5. A steel pipe internal painting production line according to claim 4, characterized in that: The paint spraying device includes a paint spraying body fixedly connected to the paint spraying bracket, the paint spraying body is provided with a cavity, the paint spraying body is provided with a paint spraying nozzle at one end close to the steel pipe, the paint spraying body is also provided with an air inlet pipe, the air inlet pipe passes through the cavity and is connected with the hollow interior of the paint spraying nozzle, and a paint inlet is also provided above the paint spraying body, and the paint inlet extends to be connected with the cavity.

6. A steel pipe internal painting production line according to claim 3, characterized in that: The residual paint recovery mechanism includes a recovery frame, a recovery guide rail is provided on the recovery frame, a recovery seat is slidably provided on the recovery guide rail, a recovery bracket is provided on the recovery seat, at least one recovery nozzle is provided on the recovery bracket, the recovery nozzle and the recovery bracket are installed through a linear bearing, a recovery pipe is installed on the tail of each recovery nozzle, a recovery tightening cylinder is provided at the end of the recovery guide rail away from the steel pipe, and a buffer spring is also provided between each recovery nozzle and the recovery bracket.

7. The steel pipe internal painting production line according to claim 1, characterized in that: The lifting mechanism includes a lifting frame, which is tilted, and two bottom lifting sprockets are provided at the bottom of the lifting frame, and two top lifting sprockets corresponding to the bottom lifting sprockets are provided at the top of the lifting frame, and a lifting chain is provided between the bottom lifting sprockets and the top lifting sprockets, and a plurality of lifting seats are fixed on the lifting chain, and the distance between each lifting seat is equal, and a lifting beam is provided between two horizontally arranged lifting seats, and a chain tensioning adjustment device is provided on the lifting frame, and a tube size adjustment plate is also provided on the lifting frame.

8. A steel pipe internal painting production line according to claim 7, characterized in that: The chain tensioning and adjusting device comprises a tensioning wheel mounting frame rotatably mounted on the lifting frame, a tensioning wheel is arranged at the free end of the tensioning wheel mounting frame, and the tensioning wheel is arranged at the inner side of the lifting chain.

9. A steel pipe internal painting production line according to claim 7, characterized in that: The tube size adjustment plate comprises a rectangular plate body, the plate body is provided with at least two adjustment long holes, the adjustment long holes are arranged perpendicular to the lifting frame, and the lifting frame is connected to the plate body via a connecting piece passing through the adjustment long holes.

10. The steel pipe internal painting production line according to claim 7, characterized in that: The lifting beam comprises a lifting beam body, an end of the lifting beam body away from the lifting chain is smaller than an end connected to the lifting chain, an end of the lifting beam body moving along the lifting chain is a vertical surface, and an opposite surface is an inclined surface.

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