JPS634460B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to an air blowing device that blows away dust attached to the surface of a workpiece that is being continuously transported during a painting process, etc. by blowing air onto the workpiece. It is related to.

BACKGROUND TECHNOLOGY In this type of air blowing device, rather than blowing air onto the workpiece at a constant pressure with the air nozzle stationary, it is possible to change the air blowing pressure by swinging or rotating the air nozzle. The dust can be effectively blown away and removed by adjusting the strength of the pressure. Further, there are various shapes of workpieces, and it is desirable to adjust the air blowing state by changing the direction of the air nozzle depending on the shape. Furthermore, when a workpiece is continuously fed through a plurality of lines, it is preferable to use one air blowing device in multiple directions rather than arranging air nozzles for each line.

In order to meet these demands, conventional methods have been to rely on humans to shake the air spray gun to increase or decrease the pressure and change the direction, or to configure the air pipe to be able to swing or rotate automatically. It is being done. However, none of these methods can avoid high costs in terms of personnel costs and equipment costs, and the product price is forced to rise.

DISCLOSURE OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide an air blowing device that has an extremely simple configuration, automatically adjusts the strength of air blowing pressure, and is configured to easily change direction. With the goal.

That is, in the air blowing device according to the present invention, a plurality of air nozzles each having a soft and highly flexible air blowing pipe connected to the shaft end of a rigid air supply pipe are provided along the vertical axis of the support shaft. Each air nozzle is mounted so that it can move up and down along the vertical axis of the support, rotate around the support shaft relative to the support, and rotate clockwise or counterclockwise around the vertical axis of the support, and branch air It is constructed by connecting a main air tube communicating with an air supply source to each air supply pipe via a tube.

BEST MODE FOR CARRYING OUT THE INVENTION This air blowing device is equipped with a plurality of air nozzles 1, 1..., and each of the air nozzles 1, 1...
is supported by columns 3 installed vertically on a base 2. Each air nozzle 1, 1, . . . is composed of an air supply pipe 1a made of a rigid pipe member made of copper or the like, and an air blowing pipe 1b fitted and connected to the tip of the shaft (see FIG. 2). This air blowing pipe 1b
A pipe member made of silicone resin or the like is used, and is made of a soft and highly flexible material. In addition, each of these air nozzles 1, 1
... is supported by ring-shaped brackets 4, 4, which are fitted into the support column 3, and each of the brackets 4, 4...
It is attached to each bracket 4, 4... by fitting and fixing the receiving tube 1c attached to the nozzle body with a support shaft 5 protruding from the side surface of the nozzle. Each bracket 4, 4... has a wing screw 6 screwed to the support column 3.
It is tightened and fixed so that it can move up and down, and along with the up and down movement, it is also attached so that it can rotate about the shaft 5 by loosening the thumbscrew 6. Further, the receiving tube 1c protruding from the nozzle body is fastened and fixed with a thumbscrew 7 screwed onto the support shaft 5.
By loosening the nozzle body, the nozzle body can be rotated clockwise or counterclockwise (see Fig. 3). The air supply pipe of each nozzle 1 is connected via an air tube 8 that communicates with an air supply source such as a dryer.In the first illustrated embodiment, a plurality of air nozzles 1, 1... In order to provide a line, an air tube 8 is used as a main tube, and a pipe inserted within the diameter of the support column 3 is connected to an air supply source by branch air tubes 9, 9, . . . . By attaching regulators 10, 10... to each branch air tube 9, 9..., the air blowing pressure can be adjusted, and by interposing an air cock or air valve 11, it is possible to stop the air supply as appropriate. It is configured. The air supply to all of these air nozzles 1, 1, . . . can be stopped by an air main valve 12 in the main air tube 8.

In the air blowing device configured in this way, when air is supplied to each air nozzle 1, 1..., the air flows through at least the main air tube 8,
While passing through the branch air tubes 9, 9..., the air becomes turbulent and is introduced into the air blowing pipe 1b. At the same time as this turbulent air is released, the blow-off pipe 1b releases air from the inflated rubber balloon, and when the blow-off port swings, a similar phenomenon occurs, and the free end side automatically swings or turns. Since the air blowing pipe 1b is made of a soft and highly flexible material, the swinging or turning motion is repeated continuously after that, and acts on the workpiece when it starts to move even slightly due to the turbulent flow of air. You can now adjust the strength of the air blowing pressure. In addition, air is blown out from the main air tube 8 through the branch air tubes 9, 9... from the air nozzles 1, 1... installed in plural on the axis of the support column 3 by the swinging or turning movement of the blowout pipe 1b. They overlap each other at the spraying position of the workpiece. Therefore, the air blowing pressure on the workpiece is doubled, and the overlapping parts are instantly moved to other parts, so the strength of the air blowing pressure on the workpiece can be greatly increased, and the air blowing pressure on the workpiece can be Since air can be blown from a wide range of angles, air can be blown onto the entire air blown surface regardless of the shape of the workpiece or the conveyance angle. Note that the swinging or turning angle width of the blowout pipe 1b can be set to a specific width by appropriately changing the longitudinal dimension of the free end side of the blowout pipe 1b. As for its structure, as in the second illustrated embodiment, a sleeve pipe 13 is provided to receive and fit the air blowing pipe 1b in the axial direction, and the pipe 13 is slid on the axis of the air blowing pipe 1b to connect with the open end. The length of the free end of the pipe 1b may be controlled by adjusting the positional relationship. In this case, since the axial line of the air blowing pipe 1b comes into contact with the open end of the sleeve tube 13, wear can be prevented by mounting the protective tube 14 on the axial line. Alternatively, as in the fourth illustrated embodiment, the fitting dimension of the air blowing pipe 1b to the air supply pipe 1a can be adjusted, and the protrusion dimension from the shaft tip of the air supply pipe 1a can be changed to It is also possible to adjust the length of the free end of the blow-off pipe 1b. In this case, it is preferable to attach a flange cap 15 to prevent sliding wear of the air blowing pipe 1b.

Further, with this air blowing device, it is possible to easily adjust the effective air blowing position according to the shape of the workpiece or the conveyance state of the workpiece. For example, air nozzle 1,1
To move the position of ... up and down on the support column 3, all you have to do is loosen the thumbscrew 6 and move the brackets 4, 4... in the desired vertical direction. By rotating it, you can change the direction of air blowout in any direction.
Further, when changing the air blowing direction to an elevation angle or a depression angle, by loosening the thumbscrew 7 and rotating it on the support shaft 5, it can be adjusted to either direction as necessary. When positioning the air nozzles 1, 1... in any of these directions, the air blowing pipe 1b swings or rotates due to the turbulent flow of air. Dust can be blown away more effectively depending on the strength of the blower.

In the above-described embodiments, the air turbulence was dependent on the air turbulence that naturally occurs within the supply path, but it may also be configured to intentionally generate this air turbulence. As for its structure, for example, as in the embodiment shown in FIG. 5, a weight ring 16 is attached to the free end of the air blowing pipe 1b, so that the pipe 1b can be bent in the axial direction under no load. Further, the axial direction of the pipe may be bent as shown in FIG. 6, and in addition, a weight ring 16 can be attached to the free end. Furthermore, the baffle plate 17 may be installed diagonally within the diameter of either pipe 1a or 1b. In these configurations, since the air flow hits the wall surface of the air blowing pipe 1b, it acts on the pipe 1b as a turbulent flow that causes the pipe 1b to swing or rotate.

Industrial Applicability According to the air blowing device according to the present invention, by attaching a soft and highly flexible air blowing pipe, the strength of the air blowing pressure can be automatically adjusted, and the air blowing direction can be freely controlled. In addition to being adjustable, the air blowing pressure can be adjusted from multiple air nozzles installed on the axis of the support to blow air regardless of the shape or conveyance angle of the workpiece, making it extremely effective at removing dust. It enables blow-off removal, does not require constant staffing, and can be configured with a simple mechanism, making it possible to reduce costs.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the air blow device according to the present invention, Fig. 2 is an enlarged side sectional view showing the air nozzle section of the device, and Fig. 3 is a partially enlarged view showing the mounting structure of the air nozzle section. FIG. 4 is a side sectional view of an air nozzle portion according to another embodiment, and FIGS. 5, 6, and 7 are explanatory diagrams showing a mechanism for intentionally generating air turbulence. 1: Air nozzle, 1a: Air supply pipe,
1b: Air blowing pipe, 3: Support column, 8: Main air tube, 9: Branch air tube.

Claims (1)

[Claims] 1 A plurality of air nozzles are provided along the vertical axis of the support shaft, each having a soft and highly flexible air blowing pipe connected to the shaft end of a rigid air supply pipe, and each air nozzle is connected along the vertical axis of the support. It is mounted so that it can move up and down, rotate around the support shaft relative to the support, and rotate clockwise or counterclockwise around the vertical axis, and communicates with the air supply source to each air supply pipe via a branch air tube. An air blow device characterized by connecting main air tubes.