Double-sided high-efficiency painting equipment and painting method

Abstract

The present invention relates to a double-sided high-efficiency paint spraying equipment and a paint spraying method, wherein the paint spraying equipment includes a workbench extending in the longitudinal direction and main tracks located on both sides of the workbench and extending in the longitudinal direction, a traveling vehicle is respectively provided on the main tracks on both sides, a vertical pole is fixedly connected to the traveling vehicle, a first slider and a driving mechanism for driving the first slider to move along the vertical pole are provided on the vertical pole, a cross bar is rotatably connected to the first slider, a second slider and a power mechanism for driving the second slider to move in the longitudinal direction are provided on the cross bar, a transverse connecting arm extending toward the side where the workbench is located is fixedly connected to the second slider, a rotating motor with an output shaft extending in the longitudinal direction is installed on the transverse connecting arm, and a spray gun is fixedly connected to the output shaft of the rotating motor. The present invention sprays paint on the workpiece on both sides at the same time, greatly improving the paint spraying efficiency, and the longitudinal, vertical and transverse movement of the spray gun makes the distance between the spray gun and the desired paint spraying position remain consistent, thereby ensuring the uniformity of the paint film.

Description

Technical Field

[0001] The present invention relates to the field of paint spraying technology, and in particular to the paint spraying of workpieces such as round tube column beams and box column beams, and specifically refers to a double-sided high-efficiency paint spraying device and a paint spraying method. Background Art

[0002] In order to extend the service life of the profile and prevent the profile from rusting, the profile surface is usually sprayed with paint. There are two main painting methods currently used. One is that the painters hold the spray gun to spray the paint, which seriously endangers the health of the workers, has high labor intensity, serious paint waste, and uneven paint film thickness and substandard quality; the other is to spray paint through mechanical equipment, but it is necessary to spray the workpiece face by face, and the workpiece needs to be turned over once each side is completed. The turning process is easy to cause damage to the paint film and seriously affects the efficiency of painting. The existing mechanical equipment spraying is only suitable for directional products, and the product structure used is single. When replacing the sprayed workpiece, it is inconvenient to adjust and has poor versatility. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a double-sided high-efficiency painting equipment and a painting method, which can simultaneously paint a workpiece from both sides. There is no need to flip the workpiece during the painting process, which reduces paint waste, ensures the quality of spraying, and greatly improves work efficiency.

[0004] The present invention is achieved through the following technical scheme, which provides a double-sided high-efficiency paint spraying equipment, including a workbench extending in the longitudinal direction and main tracks located on both sides of the workbench and extending in the longitudinal direction, a traveling vehicle is respectively provided on the main tracks on both sides, the traveling vehicle is fixedly connected to a vertical pole, the vertical pole is provided with a first slider and a driving mechanism for driving the first slider to move along the vertical pole, the first slider is rotatably connected to a cross bar, the cross bar is provided with a second slider and a power mechanism for driving the second slider to move in the longitudinal direction, the second slider is fixedly connected to a transverse connecting arm extending toward the side where the workbench is located, the transverse connecting arm is equipped with a rotating motor with an output shaft extending in the longitudinal direction, and a spray gun is fixedly connected to the output shaft of the rotating motor.

[0005] The paint spraying equipment of the present invention is moved longitudinally by the traveling vehicle, and the first slider is driven to move vertically by the driving mechanism, so as to change the height of the spray gun. The spray angle of the spray gun is changed by rotating the motor so that the spray gun is always directed to the position to be sprayed to ensure the maximum spraying area. The second slider is driven to move by the power mechanism to realize segmented painting. After the traveling vehicle stops moving, the painting operation of the corresponding length segment is completed by the movement of the second slider, thereby improving the quality of painting. The cross bar is rotatably connected to the first slider, so that the cross bar can be rotated, which is convenient for adjusting the painting height to meet the spraying requirements of profiles of different specifications.

[0006] As an optimization, the transverse connecting arm is a retractable structure. This optimization solution can adjust the distance between the spray gun and the workpiece through the extension and retraction of the transverse connecting arm, ensuring that the distance between the spray gun and each part of the workpiece is equal, thereby ensuring uniform thickness of the paint film.

[0007] As an optimization, a rotary motor for driving the crossbar to rotate is provided on the first sliding block. The rotary motor drives the crossbar to rotate, which facilitates automatic control and improves the accuracy of the crossbar rotation angle.

[0008] As an optimization, the crossbar is coplanar with the main track. The configuration of this optimization solution ensures that when the crossbar rotates, the distance between the spray gun and the workpiece remains unchanged, thereby ensuring uniform thickness of the paint film.

[0009] As an optimization, the power mechanism is a screw-nut mechanism, the screw of the screw-nut mechanism passes through the second slider and is connected to the second slider by a thread, and a support track parallel to the screw is fixed on the crossbar, and the second slider is slidably connected to the support track. This optimization scheme drives the second slider to move through the screw-nut mechanism, ensures the stability of the movement of the second slider, supports the second slider through the set support track, facilitates the leveling of the second slider, and reduces the friction when the second slider moves.

[0010] As an optimization, the power mechanism includes two pulleys axially connected to the crossbar, and an annular toothed belt connecting the two pulleys, at least one pulley is connected to the reciprocating motor, and the second slider is fixedly connected to the toothed belt. This optimization solution drives the pulley to rotate through the reciprocating motor, thereby driving the toothed belt to rotate, and finally moving the second slider back and forth. This structure reduces the weight of the equipment, and the movement of the second slider is more flexible, and the manufacturing and maintenance costs are low.

[0011] As an optimization, the workbench is provided with an exhaust gas collection box connected to the induced draft fan. The top plate of the exhaust gas collection box is a flexible plate and an air inlet is opened on the top plate, which is located below the spray painting point and moves with the traveling vehicle. When this optimal solution is in use, the induced draft fan causes the exhaust gas collection box to be in a negative pressure state, so that the air around the workpiece enters the exhaust gas collection box, thereby bringing the splashed paint to the exhaust gas collection box, which is convenient for centralized treatment and meets environmental protection requirements.

[0012] As an optimization, the workbench includes two bottom beams extending in the longitudinal direction, a bottom plate sealed and fixed to the bottom surfaces of the two bottom beams, an end plate sealed and fixed to the two end surfaces of the two bottom beams, and a top plate located on the top surfaces of the two bottom beams. The bottom beams, bottom plates, end plates and top plates form the exhaust gas collection box, and the top plates on both sides of the air inlet are provided with folds. The workbench of this optimization solution directly forms the exhaust gas collection box, which simplifies the overall structure of the equipment. By providing folds, the air inlet is convenient to move and the top plate is prevented from being overstretched.

[0013] As an optimization, at least two support plates for placing workpieces are fixed on the workbench. This optimization solution uses the support plates to support the workpiece, which reduces the shielding area of ​​the workpiece and improves the painting efficiency.

[0014] As an optimization, the workbench is provided with two bottom beams extending in the longitudinal direction, and an annular belt type exhaust gas collection device is provided between the two bottom beams, and the annular belt type exhaust gas collection device includes at least two exhaust gas collection pulleys connected to the bottom beam axis, and an annular collection belt connecting all the exhaust gas collection pulleys, and an exhaust gas inlet located below the spray painting point is provided on the upper side belt of the annular collection belt, and an exhaust gas outlet connected to the induced draft fan is provided on the lower side belt of the annular collection belt, and at least one exhaust gas collection pulley is connected to an exhaust gas collection motor fixed to the bottom beam. This optimization scheme drives the annular collection belt to rotate by the exhaust gas collection motor, so that the exhaust gas inlet is always located below the spray painting point. Under the action of the induced draft fan, the exhaust gas enters the annular collection belt from the exhaust gas inlet, and flows out through the exhaust gas outlet in a centralized manner, which is convenient for centralized treatment.

[0015] Furthermore, there are four exhaust gas collection pulleys distributed in a rectangular shape, and a dust collecting plate fixed to the bottom beam is also provided on the inner side of the annular collection belt, and air holes are provided on the dust collecting plate. This optimization scheme prevents a large amount of dust from accumulating on the lower belt by providing a dust collecting plate, reduces deformation of the annular collection belt, and prevents interference between the collection belt and the dust collecting plate by providing four exhaust gas collection pulleys.

[0016] As an optimization, a laser sensor arranged in a transverse direction is provided at one end of the workbench. The workpiece is detected by the laser sensor, and if the laser sensor detects the workpiece, the workpiece is moved forward in the longitudinal direction until the laser sensor cannot detect the workpiece, thereby ensuring that the end of the workpiece is fully sprayed with paint.

[0017] A painting method for a double-sided high-efficiency painting device comprises the following steps:

[0018] (1) Place the workpiece on the workbench longitudinally and use the laser sensor at the starting end to detect whether the workpiece is in place; if the laser sensor detects the workpiece, move the workpiece forward longitudinally until the laser sensor no longer detects the workpiece;

[0019] (2) After the workpiece is placed in place, adjust the positions of the spray guns on both sides of the workbench so that the two spray guns are located behind the workpiece, and the spray gun on one side is higher than the top surface of the workpiece, and the spray gun on the other side is lower than the bottom surface of the workpiece;

[0020] (3) During spraying, in the height direction, the spray gun on one side moves from top to bottom under the action of the driving mechanism, and the spray gun on the other side moves from bottom to top under the action of the driving mechanism;

[0021] In the longitudinal direction, the spray gun moves forward from the starting end along with the traveling vehicle, and the distance moved by the traveling vehicle each time is not greater than the movable distance of the second slider in the longitudinal direction; after the traveling vehicle stops moving each time, the power mechanism drives the second slider to move, and the spray gun sprays paint during the movement of the second slider;

[0022] In the lateral direction, the distance between the spray gun and the workpiece is achieved by the extension and retraction of the lateral connecting arm. The lateral spraying distances of the two spray guns are 1 / 2 of the width of the workpiece respectively. The rotation of the spray gun is driven by a rotary motor.

[0023] (4) The air inlet on the top plate moves with the movement of the traveling vehicle, and the air inlet is always located directly below the painting point. The induced draft fan sucks the splashing paint mist into the exhaust gas collection box for centralized treatment.

[0024] The beneficial effects of the present invention are as follows: by spraying paint on both sides of the workpiece at the same time, the painting efficiency is greatly improved; by the longitudinal, vertical and lateral movement of the spray gun, the distance between the spray gun and the position to be painted is kept consistent, thereby ensuring the uniformity of the paint film; the position of the spray gun can be easily adjusted according to the different cross-sections of the workpiece to meet the spraying needs of workpieces of different shapes, thereby greatly improving the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a side view of the present invention;

[0027] Figure 3 It is a schematic diagram of the crossbar structure;

[0028] Figure 4 This is a schematic structural diagram of the annular belt type exhaust gas collection device in Example 2;

[0029] As shown in the figure:

[0030] 1. Traveling vehicle, 2. Vertical pole, 3. Main track, 4. Workbench, 5. Horizontal connecting arm, 6. Spray gun, 7. Top beam, 8. Cross bar, 9. Workpiece, 10. Supporting vertical plate, 11. Exhaust gas collecting box, 12. Screw nut mechanism, 13. Second slider, 14. Bottom beam, 15. Exhaust gas inlet, 16. Air vent, 17. Dust collecting plate, 18. Annular collecting belt, 19. Exhaust gas collecting pulley, 20. Exhaust gas outlet. DETAILED DESCRIPTION

[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0032] Embodiment 1

[0033] like Figure 1The double-sided high-efficiency painting equipment shown in the figure comprises a workbench 4 extending in the longitudinal direction and main tracks 3 located on both sides of the workbench 4 and extending in the longitudinal direction, and a traveling vehicle 1 is respectively arranged on the main tracks 3 on both sides. The workbench comprises two bottom beams extending in the longitudinal direction, a bottom plate sealed and fixedly connected to the bottom surfaces of the two bottom beams, an end plate sealed and fixedly connected to the two end surfaces of the two bottom beams, and a top plate located on the top surfaces of the two bottom beams. The bottom beam, the bottom plate, the end plate and the top plate form an exhaust gas collection box 11, and the exhaust gas collection box 11 is connected to the induced draft fan. The top plate of the exhaust gas collection box is a flexible plate and an air inlet located below the painting point and moving with the traveling vehicle is opened on the top plate. The top plates on both sides of the air inlet are provided with folds, and a rigid rod fixedly connected to the traveling vehicle is arranged at the air inlet. The two main tracks are located outside the two bottom beams and fixedly connected to the bottom beams, thereby ensuring the integrity of the equipment and facilitating transportation and production.

[0034] At least two support plates 10 for placing workpieces are fixedly arranged on the workbench to reduce the shielding area of ​​the workpieces. In this embodiment, there are four support plates, and two plates are respectively arranged at both ends of the workpiece for support.

[0035] In order to facilitate the determination of whether the workpiece 9 is placed in place, a laser sensor is arranged laterally at the starting end of the workbench. If the laser sensor detects the workpiece, the workpiece is moved forward longitudinally until the laser sensor can no longer detect the workpiece. The starting position of the spray gun is aligned with the laser sensor, thereby ensuring that the end face of the workpiece is fully painted.

[0036] The traveler is fixed with a vertical pole 2, and the two vertical poles 2 are fixed as a whole through a top beam 7, which ensures the synchronization of the movement of the two travelers. When one of the travelers fails, the device can still be used normally. The vertical pole is provided with a first slider and a driving mechanism for driving the first slider to move along the vertical pole. The first slider is rotatably connected with a cross bar 8, and a rotating motor for driving the cross bar to rotate is provided on the first slider. The cross bar 8 is coplanar with the main track 3. When the rotating motor drives the cross bar to rotate, it is ensured that the distance between the spray gun 6 and the workpiece does not change.

[0037] A second slider 13 and a power mechanism for driving the second slider 13 to move longitudinally are provided on the cross bar. The power mechanism is a screw-nut mechanism 12. The screw of the screw-nut mechanism 12 passes through the second slider and is connected to the second slider by a thread. A support rail parallel to the screw is also fixed on the cross bar, and the second slider is slidably connected to the support rail.

[0038] The second slider is fixedly connected with a transverse connecting arm 5 extending toward the side where the workbench is located. The transverse connecting arm is a telescopic structure. A rotating motor with an output shaft extending in the longitudinal direction is installed on the transverse connecting arm. A spray gun is fixedly connected to the output shaft of the rotating motor. The telescopic structure of the transverse connecting arm can adopt the existing technology.

[0039] The painting method using the above-mentioned painting equipment comprises the following steps:

[0040] 1. Place the workpiece on the workbench longitudinally and use the laser sensor at the starting end to detect whether the workpiece is in place; if the laser sensor detects the workpiece, move the workpiece forward longitudinally until the laser sensor can no longer detect the workpiece.

[0041] 2. After the workpiece is placed in place, adjust the positions of the spray guns on both sides of the workbench so that the two spray guns are located behind the workpiece, and the spray gun on one side is higher than the top surface of the workpiece, and the spray gun on the other side is lower than the bottom surface of the workpiece.

[0042] 3. During spraying, in the height direction, the spray gun on one side moves from top to bottom under the action of the driving mechanism, and the spray gun on the other side moves from bottom to top under the action of the driving mechanism, thereby avoiding interference between the two spray guns; in the longitudinal direction, the spray gun moves forward from the starting end with the traveling vehicle, and the distance each time the traveling vehicle moves is not greater than the movable distance of the second slider in the longitudinal direction, thereby realizing segmented painting. After each movement and stop of the traveling vehicle, the power mechanism drives the second slider to move, and during the movement of the second slider, the spray gun sprays paint. If the workpiece is provided with ribs along the length direction, the ribs are used as the dividing line of the painting length section; in the transverse direction, the distance between the spray gun and the workpiece is realized by the extension and retraction of the transverse connecting arm, and the transverse spraying distances of the two spray guns are 1 / 2 of the width of the workpiece respectively; the rotation of the spray gun is driven by a rotating motor, and the rotation angle of the spray gun is adjusted according to the cross-sectional shape and size of the workpiece, so that the spray gun is always facing the painting point.

[0043] 4. The air inlet on the top plate moves with the movement of the traveling vehicle, and the air inlet is always located directly below the painting point.

[0044] Embodiment 2

[0045] The difference between this embodiment and the first embodiment is that the power mechanism includes two pulleys axially connected to the crossbar, and an annular toothed belt connecting the two pulleys, wherein one pulley is connected to a reciprocating motor fixed to the crossbar, and the second slider is fixedly connected to the toothed belt. In order to reduce friction, the axles of the two pulleys are connected to the crossbar through bearings, and the wheel surfaces of the pulleys are provided with gear teeth that mesh with the toothed belt. The forward and reverse rotation of the reciprocating motor drives the pulley to rotate, thereby driving the toothed belt to rotate back and forth, and finally moving the second slider back and forth. This structure reduces the weight of the equipment, and the movement of the second slider is more flexible, and the manufacturing and maintenance costs are low.

[0046] The workbench of this embodiment is provided with two bottom beams 14 extending in the longitudinal direction, and an annular belt type exhaust gas collection device is provided between the two bottom beams, and the annular belt type exhaust gas collection device includes at least two exhaust gas collection pulleys 19 connected to the bottom beam axis, and an annular collection belt 18 connecting all the exhaust gas collection pulleys, and an exhaust gas inlet 15 located below the spray painting point is provided on the upper side belt of the annular collection belt, and an exhaust gas outlet 20 connected to the induced draft fan is provided on the lower side belt of the annular collection belt, and one of the exhaust gas collection pulleys is connected to an exhaust gas collection motor fixed to the bottom beam. The annular collection belt is driven to rotate by the exhaust gas collection motor, so that the exhaust gas inlet is always located below the spray painting point. Under the action of the induced draft fan, the exhaust gas enters the annular collection belt from the exhaust gas inlet, and flows out through the exhaust gas outlet in a centralized manner, which is convenient for centralized treatment.

[0047] In this embodiment, there are four exhaust gas collection pulleys, which are arranged in a rectangular shape. A dust receiving plate 17 fixed to the bottom beam is also provided on the inner side of the annular collection belt, and a vent hole 16 is provided on the dust receiving plate. The dust receiving plate 17 is provided to prevent a large amount of dust from accumulating on the lower belt, reduce deformation of the annular collection belt, and to prevent interference between the collection belt and the dust receiving plate by providing four exhaust gas collection pulleys.

[0048] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A double-sided high-efficiency painting equipment, characterized by: The invention comprises a workbench extending in the longitudinal direction and main tracks located at both sides of the workbench and extending in the longitudinal direction, a traveling vehicle is respectively arranged on the main tracks on both sides, the traveling vehicle is fixedly connected with a vertical pole, the vertical pole is provided with a first slider and a driving mechanism driving the first slider to move along the vertical pole, the first slider is rotatably connected with a cross bar, the cross bar is provided with a second slider and a power mechanism driving the second slider to move in the longitudinal direction, the second slider is fixedly connected with a transverse connecting arm extending toward the side where the workbench is located, the transverse connecting arm is provided with a rotating motor with an output shaft extending in the longitudinal direction, and a spray gun is fixedly connected to the output shaft of the rotating motor; The workbench is provided with two bottom beams extending in the longitudinal direction, and an annular belt type exhaust gas collection device is provided between the two bottom beams, and the annular belt type exhaust gas collection device includes at least two exhaust gas collection pulleys axially connected to the bottom beams, and an annular collection belt connecting all the exhaust gas collection pulleys, an exhaust gas inlet located below the spray painting point is provided on the upper side belt of the annular collection belt, and an exhaust gas outlet connected to the induced draft fan is provided on the lower side belt of the annular collection belt, at least one exhaust gas collection pulley is connected to an exhaust gas collection motor fixed to the bottom beam, and the annular collection belt is driven to rotate by the exhaust gas collection motor, so that the exhaust gas inlet is always located below the spray painting point; There are four exhaust gas collecting pulleys distributed in a rectangular shape, and a dust collecting plate fixedly connected to the bottom beam is provided on the inner side of the annular collecting belt, and air holes are provided on the dust collecting plate; At least two supporting vertical plates for placing workpieces are fixedly arranged on the workbench.

2. The double-sided high-efficiency painting equipment according to claim 1, characterized in that: The transverse connecting arm is a telescopic structure.

3. The double-sided high-efficiency painting equipment according to claim 1, characterized in that: The first sliding block is provided with a rotating motor for driving the cross bar to rotate.

4. The double-sided high-efficiency painting equipment according to claim 3 is characterized in that: The cross bar is coplanar with the main track, and when the rotary motor drives the cross bar to rotate, it is ensured that the distance between the spray gun and the workpiece does not change.

5. The double-sided high-efficiency painting equipment according to claim 1, characterized in that: The power mechanism is a screw-nut mechanism, a screw of the screw-nut mechanism passes through the second slider and is threadedly connected to the second slider, a support track parallel to the screw is fixed on the crossbar, and the second slider is slidably connected to the support track.

6. The double-sided high-efficiency painting equipment according to claim 1, characterized in that: The power mechanism comprises two pulleys axially connected to the crossbar and an annular toothed belt connecting the two pulleys, at least one pulley is connected to the reciprocating motor, and the second sliding block is fixedly connected to the toothed belt.

7. The double-sided high-efficiency painting equipment according to claim 2, characterized in that: One end of the workbench is provided with a laser sensor arranged in a transverse direction.

8. A painting method for the double-sided high-efficiency painting equipment according to claim 7, characterized in that: (1) Place the workpiece on the supporting plate longitudinally, and use the laser sensor at the starting end to detect whether the workpiece is in place; (2) After the workpiece is placed in place, adjust the positions of the spray guns on both sides of the workbench so that the two spray guns are located behind the workpiece, and the spray gun on one side is higher than the top surface of the workpiece, and the spray gun on the other side is lower than the bottom surface of the workpiece; (3) During spraying, in the height direction, the spray gun on one side moves from top to bottom under the action of the driving mechanism, and the spray gun on the other side moves from bottom to top under the action of the driving mechanism; In the longitudinal direction, the spray gun moves forward from the starting end along with the traveling vehicle, and the distance moved by the traveling vehicle each time is not greater than the movable distance of the second slider in the longitudinal direction; after the traveling vehicle stops moving each time, the power mechanism drives the second slider to move, and the spray gun sprays paint during the movement of the second slider; In the lateral direction, the distance between the spray gun and the workpiece is adjusted by the extension and retraction of the lateral connecting arm. The lateral spraying distance of the two spray guns is 1 / 2 of the width of the workpiece respectively. The rotation of the spray gun is driven by a rotary motor. (4) The exhaust gas collection motor drives the annular collection belt to rotate so that the exhaust gas inlet is always located below the painting point. Under the action of the induced draft fan, the exhaust gas enters the annular collection belt from the exhaust gas inlet and flows out through the exhaust gas outlet.

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