阅读说明：本技术 一种大型工件静电喷粉房 (Large-scale work piece electrostatic powder spraying room ) 是由 陈红兵 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种大型工件静电喷粉房,属于喷粉设备技术领域,包括自动喷粉室及自动喷粉装置,其特征在于：所述自动喷粉室的上方安装有对自动喷粉室内的大型工件喷粉处理的自动喷粉装置；所述自动喷粉室顶部布置有特定区域完全敞开的开口；所述自动喷粉室内安装有令所述自动喷粉室内侧产生竖向下气流的循环风系统。本粉末静电喷粉房具有自动喷涂完成比例高、人工作业量少、节能这三大优点,可以节约人工成本、降低电力能源消耗。(The invention discloses an electrostatic powder spraying room for large-sized workpieces, which belongs to the technical field of powder spraying equipment, comprises an automatic powder spraying room and an automatic powder spraying device, and is characterized in that: an automatic powder spraying device for spraying powder to the large-sized workpiece in the automatic powder spraying chamber is arranged above the automatic powder spraying chamber; an opening with a completely opened specific area is arranged at the top of the automatic powder spraying chamber; and a circulating air system for enabling the inner side of the automatic powder spraying chamber to generate vertical downward airflow is arranged in the automatic powder spraying chamber. The electrostatic powder spraying room for powder has the advantages of high automatic spraying completion ratio, less manual operation amount and energy conservation, and can save labor cost and reduce power energy consumption.)

1. The utility model provides a large-scale work piece electrostatic spraying powder room, suspends conveyor system (1) in midair including the work piece that is used for hanging large-scale work piece the work piece suspends conveyor system (1) in midair and marchs along the on-line and set gradually automatic spray powder room (3) and manual spray powder room (4), automatic spray powder room (3) and manual spray powder room (4) intercommunication and constitute the combination spray powder room that both ends have work piece import and work piece export respectively, its characterized in that: an automatic powder spraying device (5) for spraying powder to large workpieces in the automatic powder spraying chamber (3) is arranged above the automatic powder spraying chamber (3); and a circulating air system for enabling the inner side of the automatic powder spraying chamber (3) to generate vertical downward airflow is arranged in the automatic powder spraying chamber (3).

2. The electrostatic powder spraying chamber for the large-sized workpiece according to claim 1, characterized in that: the automatic powder spraying device (5) comprises three-dimensional right-angle rotating automatic spraying units which are arranged on two sides above the automatic powder spraying chamber (3), and the three-dimensional right-angle rotating automatic spraying units comprise an X-axis linear module (5-1), a Y-axis linear module (5-2), a Z-axis linear module (5-3), a turntable cylinder (5-4) and an electrostatic powder spraying gun (5-5); the X-axis linear module (5-1) is installed on the side part of the automatic spraying chamber (3), and the X-axis linear module (5-1) is horizontally arranged and is parallel to the advancing axis of the workpiece suspension and transportation system (1); the Y-axis linear module (5-2) is assembled on the X-axis linear module (5-1) and can move along the X-axis linear module (5-1), and the Y-axis linear module (5-2) horizontally extends towards the inner side above the automatic powder spraying chamber (3) and is vertical to the X-axis linear module (5-1); the Z-axis linear module (5-3) is assembled on the Y-axis linear module (5-2) and can move movably along the Y-axis linear module (5-2), and the Z-axis linear module (5-3) vertically extends downwards and is vertical to the Y-axis linear module (5-2); the rotary table cylinder (5-4) is installed on the Z-axis linear module (5-3) and vertically moves along the Z-axis linear module (5-3), and a rotating shaft of the rotary table cylinder (5-4) is parallel to the Z-axis linear module (5-3); the electrostatic powder spray gun (5-5) is arranged on the rotary table cylinder (5-4).

3. An electrostatic powder spraying chamber for large-sized workpieces according to claim 2, characterized in that: the upper part of the automatic powder spraying chamber (3) is an opening larger than the overlooking range of a workpiece, the bottom of the automatic powder spraying chamber (3) is provided with an air suction hole, and the air suction hole is communicated with a dust collecting device through a pipeline.

Technical Field

The invention belongs to the technical field of powder spraying equipment, and particularly relates to an electrostatic powder spraying room for large-sized workpieces.

Background

Electrostatic powder spraying is a powder coating method that is dominant in the industrial coating field. The coating material sprayed by the electrostatic powder spray gun is dispersed and the powder particles are charged with negative charges, and the charged powder particles are coated on the grounded object under the action of air flow (or other acting force such as centrifugal force) and electrostatic attraction, and then heated to melt and solidify into a film.

Compared with the liquid coating spraying technology, the electrostatic powder spraying technology can reduce the pollution degree to the environment; the spraying powder is easy to recover, the utilization rate is high, and the economic benefit is relatively obvious; the powder coating avoids waste caused by volatilization into the atmosphere because no organic volatile matters are generated, so that the energy cost is greatly reduced compared with a liquid coating; the electrostatic powder spraying technique has excellent film properties such as film durability, abrasion resistance, impact resistance, adhesion, toughness, corrosion resistance, chemical resistance and the like, and outdoor use powder coatings have high weather resistance and stain resistance in addition to the above advantages. Due to the unique advantages, the market proportion of powder coatings in general industrial coatings has been continuously increased year by year since the powder coating spraying technology enters the coating industry.

At present, the spraying modes used in the powder coating spraying technology mainly comprise manual spraying and automatic spraying, and the manual spraying efficiency is low for electrostatic spraying of large-scale workpieces such as boxcars, dump trucks, bin gate trucks, tank cars, truck carriages and the like. Specifically, automatic spraying systems of the conventional mode adopt a simple powder spraying method in which an automatic powder spraying gun reciprocates vertically while a workpiece travels at a low speed. The action direction of the automatic powder gun is vertical to the walking direction of the workpiece, and the ratio of automatic spraying completion is low. If a van carriage on a spraying production line longitudinally runs at a low speed, the inner surfaces of front and rear end face baffles of the carriage and the outer surfaces of the baffles (hereinafter referred to as front and rear end workpiece surfaces) are low in proportion of automatic spraying, so that a large amount of manual spraying and robot complementary spraying are required to make up for the situation, and the spraying quality of manual or robot complementary spraying is difficult to guarantee because workpieces run at the low speed simultaneously. The large workpiece has large integral size and large spraying area, and is limited by the spraying working space of spraying equipment and the moving range of an automatic spray gun, and automatic powder spraying equipment which is suitable for the large workpiece and can particularly and efficiently treat the surfaces of the front and rear workpieces of the large workpiece does not exist in the market at present.

On the other hand, in the existing automatic powder spraying equipment, during the powder spraying work, workpieces continuously travel, the inlet and the outlet of a powder spraying chamber must be kept open, and the requirement on the air flow is high on the premise of ensuring the full recovery of powder.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the electrostatic powder spraying room for the large-sized workpiece, which solves the problems that the spraying efficiency of the large-sized workpiece is low and the spraying quality is difficult to ensure at present.

The invention is realized in this way, a large-scale work piece electrostatic powder spraying room, including the work piece transporting system used for hanging the large-scale work piece, set up automatic powder spraying room and manual powder spraying room sequentially on the advancing line of the said work piece transporting system, the said automatic powder spraying room communicates with manual powder spraying room and forms the combination powder spraying room with work piece inlet and work piece outlet separately in both ends, characterized by that: an automatic powder spraying device for spraying powder to the large-sized workpiece in the automatic powder spraying chamber is arranged above the automatic powder spraying chamber; and a circulating air system for enabling the inner side of the automatic powder spraying chamber to generate vertical downward airflow is arranged in the automatic powder spraying chamber.

In the above technical solution, preferably, the automatic powder spraying device includes a three-dimensional right-angle rotation automatic spraying unit installed above the automatic powder spraying chamber, and the three-dimensional right-angle rotation automatic spraying unit includes an X-axis linear module, a Y-axis linear module, a Z-axis linear module, a turntable cylinder, and an electrostatic powder spraying gun; the X-axis linear module is installed on the side part of the automatic spraying chamber, and the X-axis linear module is horizontally arranged and is parallel to the advancing axis of the workpiece suspension and transportation system; the Y-axis linear module is assembled on the X-axis linear module and can move movably along the X-axis linear module, and the Y-axis linear module horizontally extends towards the inner side above the automatic powder spraying chamber and is vertical to the X-axis linear module; the Z-axis linear module is assembled on the Y-axis linear module and can move movably along the Y-axis linear module, and the Z-axis linear module vertically extends downwards and is vertical to the Y-axis linear module; the rotary table cylinder is installed on the Z-axis linear module and vertically moves along the Z-axis linear module, and a rotating shaft of the rotary table cylinder is parallel to the Z-axis linear module; the electrostatic powder gun is arranged on the rotary table cylinder.

In the above technical scheme, preferably, the upper part of the automatic powder spraying chamber is an opening larger than the top view of the workpiece, and the bottom of the automatic powder spraying chamber is provided with an air suction hole which is communicated with a dust collecting device through a pipeline.

The invention has the advantages and technical effects that:

the invention provides automatic and manual combined electrostatic spraying equipment suitable for large-scale workpieces such as boxcars, dump trucks, bin gate trucks, tank cars, freight cars and the like, wherein a circulating air system in the equipment generates vertical downward air flow in an automatic powder spraying chamber, and powder has a falling trend due to dead weight, so that the requirement on the air volume of the circulating air system is reduced by 50 percent on the premise of ensuring that the powder is completely recovered compared with a traditional powder spraying system in which the workpieces can be automatically sprayed only by running at low speed, the requirement on the fan power in the circulating air system is low, the noise is low, and the energy-saving technical effect is achieved. The automatic powder spraying room in the powder spraying room is provided with the automatic powder spraying device capable of electrostatically spraying the large-sized workpiece, the automatic powder spraying device can efficiently finish the main spraying work of the large-sized workpiece, and the subsequent manual spraying is matched, so that the spraying efficiency is improved, and meanwhile, the higher spraying quality is ensured. Compared with the traditional pure manual spraying and low-speed walking traditional automatic powder spraying system, the powder spraying room greatly reduces the manual operation amount and greatly reduces the power energy consumption.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the installation structure of the automatic powder spraying device in the invention: (ii) a

Fig. 3 is a schematic structural view of a three-dimensional right-angle rotary automatic spraying unit according to the present invention.

In the figure, 1, a workpiece suspension conveying system; 2. a gantry frame; 3. an automatic powder spraying chamber; 4. a manual powder spraying chamber; 5. three-dimensional plus right-angle rotation automatic powder spraying device: 5-1, an X-axis linear module; 5-2, a Y-axis linear module; 5-3, a Z-axis linear module; 5-4, a turntable cylinder; 5-5, and an electrostatic powder gun.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention particularly provides an electrostatic powder spraying room for large-sized workpieces, aiming at solving the problems that the spraying efficiency of the existing large-sized workpieces is low and the spraying quality is difficult to ensure. The electrostatic powder spraying room for powder has the advantages of high automatic spraying completion ratio, less manual operation amount and energy conservation, and can save labor cost and reduce power energy consumption. To further illustrate the structure of the present invention, the following detailed description is made with reference to the accompanying drawings:

example one

Referring to fig. 1-3, an electrostatic powder spraying chamber for large workpieces includes a workpiece suspension transport system 1 for suspending large workpieces. The workpiece suspension transportation system 1, i.e. a suspension transporter, is a conventional known device in the mechanical field, is a common continuous transportation device, is widely applied to continuously transporting various finished articles and bulk materials in containers or bags in factories, and can also be used for transporting workpieces among various procedures in production lines of various industrial departments to complete various technological processes and realize comprehensive mechanization of transportation and technological operation. The structure of the device mainly comprises a traction chain, a sliding frame, a lifting appliance, an overhead rail, a driving device, safety devices of a tensioning device and the like. The extending direction of the overhead rail is the advancing direction of the sliding frame in the workpiece suspension transportation system 1, the driving device drives the sliding frame to move along the overhead rail through the traction chain, and the lifting appliance is installed on the sliding frame and used for suspending the workpiece. In this embodiment, the overhead rail is a straight line, and the extending direction thereof is the traveling line of the workpiece suspension transport system 1. The gantry frames 2 are uniformly distributed in the advancing direction of the workpiece suspension and transportation system 1, the gantry frames 2 are used as supporting frames of overhead rails, and the overhead rails are fixed on the gantry frames 2.

An automatic powder spraying chamber 3 and a manual powder spraying chamber 4 are sequentially arranged on the advancing line of the workpiece suspension conveying system 1. The automatic powder spraying chamber 3 is communicated with the manual powder spraying chamber 4 to form a combined powder spraying chamber, the two ends of the combined powder spraying chamber are respectively provided with a workpiece inlet and a workpiece outlet, and the combined powder spraying chamber is an internal integral working space of the electrostatic powder spraying chamber. Specifically, the automatic powder spraying chamber 3 is a powder spraying working space which is enclosed by two side walls and is provided with an opening at the upper part and openings at two ends.

An automatic powder spraying device 5 for spraying powder to the large-sized workpiece on the inner side of the automatic powder spraying chamber 3 is arranged above the automatic powder spraying chamber 3.

In this embodiment, the automatic powder spraying device 5 includes three-dimensional right-angle rotary automatic spraying units installed on two sides above the automatic powder spraying chamber 3. The three-dimensional right-angle rotation automatic spraying unit comprises an X-axis linear module 5-1, a Y-axis linear module 5-2, a Z-axis linear module 5-3, a rotary table cylinder 5-4 and an electrostatic powder gun 5-5.

The X-axis linear module 5-1 of the three-dimensional right-angle rotary automatic spraying unit positioned on the same side of the automatic powder spraying chamber 3 is a linear module extending along the upper edge of the side wall of the automatic spraying chamber 3. The X-axis linear module 5-1 is fixedly arranged on the gantry frame 2. The X-axis linear module 5-1 is horizontally arranged and is parallel to the advancing axis of the workpiece suspension transport system 1.

The X-axis linear module 5-1 is installed at the outer side of the automatic spraying chamber, and the X-axis linear module 5-1 is horizontally arranged.

The Y-axis linear module 5-2 is mounted on the X-axis linear module 5-1 and can move along the X-axis linear module 5-1. The Y-axis linear module 5-2 extends horizontally inwards above the automatic powder spraying chamber 3 and is perpendicular to the X-axis linear module 5-1. The Z-axis linear module 5-3 is mounted on the Y-axis linear module 5-2 and can move along the Y-axis linear module 5-2. The Z-axis linear module 5-3 extends vertically downward and is perpendicular to the Y-axis linear module 5-2.

In this embodiment, the X-axis linear module 5-1 and the Y-axis linear module 5-2 are conventionally known components having the same structure, that is, including a linear guide, a rack, a slider, and a motor. The sliding seat is assembled on the linear guide rail and can move movably along the linear guide rail. The rack is parallel to the linear guide rail, the motor is arranged on the sliding seat, the output shaft of the motor is meshed with the gear of the rack, and the output shaft of the motor drives the gear to rotate, so that the sliding seat can move along the linear guide rail.

The Z-axis linear module 5-3 comprises a vertical linear guide rail sleeve, a linear sliding rod, a rack and a motor, wherein the linear sliding rod is assembled on the linear guide rail sleeve and can be vertically stretched, and the rack is installed on the linear sliding rod and is parallel to the linear sliding rod. The motor is arranged on the linear guide rail sleeve, the gear meshed with the rack is arranged on an output shaft of the motor, and the motor works to drive the linear sliding rod to vertically move. The Z-axis linear module 5-3 is also one of the conventional known linear modules, and may be a multi-section telescopic linear module, that is, a linear guide rail sleeve which is sleeved and is telescopic by a motor. The multi-section telescopic linear module can reduce the upper height of the linear sliding rod to a certain extent, and is beneficial to reducing the overall working height of the powder spraying room.

In the embodiment, the linear guide rail of the X-axis linear module 5-1 is fixedly arranged on the gantry-shaped frame 2, a plurality of sliding seats are arranged on the linear guide rail of the X-axis linear module 5-1, and each sliding seat is provided with a motor for controlling the sliding seat to move movably. The linear guide rail of the Y-axis linear module 5-2 is fixed on the sliding seat of the X-axis linear module 5-1. The linear guide rail sleeve of the Z-axis linear module 5-3 is fixed on the sliding seat of the Y-axis linear module 5-2.

The electrostatic powder gun 5-5 is arranged on the Z-axis linear module 5-3 and can move along the Z-axis linear module 5-3.

In this embodiment, specifically, the lower end of the linear slide rod of the Z-axis linear module 5-3 is fixed with the turntable cylinder 5-4, the axis of the rotating shaft of the turntable cylinder 5-4 is parallel to the linear slide rod of the Z-axis linear module 5-3, the cylinder body of the turntable cylinder 5-4 and the lower end of the linear slide rod are fixed through screws, and the turntable of the turntable cylinder 5-4 faces downward. The frame body is fixed on the lower end surface of the rotary table cylinder 5-4 through a screw, and the frame body is provided with the required number of electrostatic automatic powder guns 5-5. The structure realizes that the electrostatic powder spray gun 5-5 can move along X, Y, Z three-dimensional space and can rotate at right angle by taking the Z axis as a rotating shaft. Thus, the automatic powder spraying operation of the inner and outer surfaces of the box workpiece can be completed by the least automatic powder spraying mechanisms.

In this embodiment, the top area of the automatic powder spraying chamber 3 is completely open, so as to meet the space required by the operation of the three-dimensional right-angle rotation automatic spraying unit installed on the top, and ensure that the automatic spraying device on the top can operate without obstacles, thereby completing the spraying work of the peripheral outer walls of the workpiece. The size of the area above the automatic powder spraying chamber 3 is determined by the size range of the workpiece and the minimum space required by the operation of the automatic spraying device 5 arranged on the top. This area is 600 mm or more than the periphery of the projected area of the workpiece.

Taking the electrostatic powder spraying work of a boxcar as an example, the boxcar is hung on a workpiece suspension transportation system 1, a workpiece enters an automatic powder spraying room from a powder spraying room workpiece inlet, and after the workpiece enters an automatic powder spraying room 3, movable doors of the workpiece inlet and a workpiece outlet are closed. The three-dimensional right-angle rotary automatic spraying unit moves to enable the electrostatic powder guns 5-5 of different three-dimensional right-angle rotary automatic spraying units to be positioned on the inner side and the outer side of the left side plate and the right side plate of the boxcar, and the electrostatic powder guns 5-5 can spray the inner wall and the outer wall of the left side plate and the right side plate of the boxcar through the movable movement of the X-axis direction and the Z-axis direction.

After the spraying of the left side plate and the right side plate of the boxcar is finished, the rotary table air cylinders 5-4 of the three-dimensional right-angle rotating automatic spraying units close to the two end parts of the boxcar control the electrostatic powder spraying guns 5-5 to rotate 90 degrees, so that the electrostatic powder spraying guns 5-5 on the inner side and the outer side of the boxcar are opposite to the inner sides of the front end surface and the rear end surface of the boxcar, and then the electrostatic powder spraying guns 5-5 can spray the inner walls and the outer walls of the front end plate and the rear end plate of the boxcar through the movement of the Y axis and the Z axis.

The automatic spraying device can finish the automatic spraying work of the inner surface and the outer surface of the large box-shaped workpiece, and the spraying proportion of the surface area is highest. And the rotation angles of the cable air pipe and the powder pipe of the electrostatic powder gun are small, so that the electrostatic powder gun is not easy to damage, and pipelines of the electrostatic powder gun cannot interfere with each other.

The top of the automatic powder spraying chamber is provided with an open opening, and the projection size of the open top is larger than the maximum workpiece plane projection stopped in the automatic powder spraying chamber, so that the three-dimensional rotating automatic powder spraying mechanism arranged above the top of the automatic powder spraying chamber can run without obstacles to complete the automatic powder spraying operation on the surface of a workpiece. The automatic powder spraying chamber is connected with the manual powder spraying chamber. A closable movable door is arranged at the inlet of the workpiece at the head end of the automatic powder spraying chamber 3, and a closable movable door is also arranged at the outlet of the workpiece at the tail end of the manual powder spraying chamber 4. The workpiece enters the automatic powder spraying room and stops, the movable doors of the workpiece inlet and the workpiece outlet of the powder spraying room are closed, and then the automatic powder spraying mechanism carries out automatic powder spraying operation. The manual powder spraying room can also be manually checked for powder supplementing and spraying operation.

The bottom of the automatic powder spraying chamber is provided with a bottom air draft duct, an air draft opening is reasonably arranged on a top plate of the duct, and the duct is communicated with an air draft fan. The upper part of the automatic powder spraying chamber is opened, and vertical downward airflow is formed in the automatic powder spraying chamber under the negative pressure action of the air suction opening. The air draft duct is communicated with the dust collecting device. In this embodiment, the dust collecting device is a cyclone.

And an automatic powder spraying device with a three-dimensional linkage and rotation function is arranged above the top of the automatic powder spraying chamber, a workpiece enters the automatic powder spraying chamber and stops at a specified position, and then the automatic powder spraying device automatically sprays according to a spraying program set by the corresponding workpiece to finish the automatic spraying operation of each surface. And before the workpiece stops spraying, the automatic doors of the inlet and the outlet of the spraying chamber are closed, negative pressure is formed in the air extracting chamber at the bottom of the spraying chamber, and air is introduced from the opening at the top of the spraying chamber, so that the air distribution in the spraying chamber with up-down convection is formed.

The novel electrostatic powder spraying room for powder has the advantages of high automatic spraying completion proportion, less manual operation amount and energy conservation, and can save labor cost and reduce power energy consumption.

Example two

In the present embodiment, the difference from the above embodiments is the selection of the workpiece transport system and the structure of the automatic spraying device.

Specifically, the workpiece transport system is a rail-type workpiece transport system, the rail-type workpiece transport system is used for supporting, transporting and traveling the workpiece on a rail, and the workpiece is supported on a ground rail for transportation, and is conventional known equipment. The system is more readily advantageous in combination with a workpiece transport system in the form of a ground conveyor. The automatic powder spraying chamber is not provided with any barrier above. Therefore, the automatic powder spraying device at the top is very convenient to use. Two sets of automatic powder spraying devices of one powder spraying system can meet the requirement of production, and the quantity of the automatic powder spraying devices is doubled compared with that of four sets of the suspended conveying lines.

In this embodiment, the automatic coating apparatus includes an outer coating unit and an inner coating unit installed at the side of the automatic powder spray booth. The outer and inner spray units comprise the same X-axis and Y-axis linear modules as described in the first embodiment. The Z-axis linear module in the external spraying unit is a linear module extending downwards from the Y-axis linear module, the structure of the Z-axis linear module is the same as that of the X-axis linear module and that of the Y-axis linear module in the first embodiment, and a vertically movable sliding seat type is adopted. And a turntable cylinder and an electrostatic powder gun are arranged on a sliding table of the Z-axis linear module of the external spraying unit. The outer spraying unit is an automatic device for spraying the outer wall of the large workpiece, and the working principle of the outer spraying unit is the same as that of the first embodiment. In this embodiment, the Z-axis linear module used by the inner spraying unit is a pneumatic fork shearing frame, and the pneumatic fork shearing frame has an automatically controllable stable vertical telescopic function and belongs to the existing conventional known component. Compared with a conventional linear module in a broad sense, the length of the pneumatic fork shearing frame after retraction is extremely small. The lower end of the pneumatic fork shearing frame is provided with a rotary table cylinder and an electrostatic powder gun for spraying powder on the inner wall of a large workpiece, and the working principle of the electrostatic powder gun is the same as that of the first embodiment.

The automatic spraying device in the embodiment has extremely low requirements on vertical installation and working space, so that the requirement on the height of a factory building is low.

In this embodiment, a dust suction pipe may be fixed to a lower portion of the rectangular mounting frame of the electrostatic powder gun of the inner spray unit, the dust suction pipe being connected to an air inlet duct of the cyclone dust collector through a hose, the dust suction pipe having a dust suction hole for generating a downward air flow inside the large-sized workpiece.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.