JP2013049004A - Dust removal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To swing a nozzle and to uniformly jet pressure fluid over the entire workpiece by a simple and inexpensive configuration.SOLUTION: The dust removal device includes: a conveyance conveyer 2 for conveying a workpiece; a body 3 provided with a working processing space S therein for removing dust adhering to the workpiece conveyed by the conveyance conveyer 2; a nozzle 6 arranged inside the body 3 and having a jetting port 60 for jetting the pressurized pressure fluid to the workpiece; a pressure fluid supply means 9 for supplying the pressure fluid to the nozzle 6; and a dust collector 11 connected to the body 3 for sucking dust removed by the pressure fluid jetted from the nozzle 6. The nozzle 6 is produced by bending elastic material. One end is made to be a fixed end 6a, and the other end is made to be a free end 6b. The other end 6b is formed with the jetting port 60.

Description

  The present invention relates to a dust removing apparatus that removes dust attached to an electronic device, a resin molded product, or the like with a pressurized pressure fluid.

  As this conventional dust removing device, for example, a dust removing device for removing dust adhering to a pallet used when assembling precision equipment, comprising a main body, a conveyor, a nozzle, and a suction device. What is provided is known (see Patent Document 1).

  The main body includes a work processing space for removing dust adhering to the pallet. Further, the main body includes a pallet carry-in port and a carry-out port on a pair of wall surfaces arranged in the pallet carrying direction. In addition, a suction duct for collecting the dust from the removed pallet is disposed at the lower part of the main body.

  The conveyor is installed in the main body and conveys the pallet from the carry-in port to the carry-out port. The conveyor includes a plurality of rollers arranged at predetermined intervals, an endless transport belt stretched around each roller, and a motor that drives the rollers.

  The nozzle can be freely angle-adjusted by an angle adjusting mechanism disposed at the top of the main body. The nozzle is manually fixed at a desired position (a position where dust adhering to the pallet can be removed), and air is blown from above to the pallet that has been conveyed by the conveyor to remove the dust adhering to the pallet. To do.

  The suction device is connected to a suction duct disposed at the lower part of the main body. The dust collected in the suction duct is sucked by the suction device.

  Further, as another conventional dust removing device, for example, a device including a screen, a driving mechanism for circulating and moving the screen, and a pressure fluid ejecting unit is known (see Patent Document 2).

  The screen is installed at a water intake of a water treatment facility, and is configured by connecting plate materials such as a lattice shape, a net shape, and a punching metal in an endless manner. When the endless screen is viewed from the side, the screen is formed in an oval shape with a pair of arc-shaped portions on both sides and a linear portion connecting both ends of each arc-shaped portion. And the lower end part of a screen is immersed in water so that a screen may incline with a predetermined angle with respect to the water surface. The screen is rotated upward from the water surface, so that dust such as wood and garbage flowing from the upstream side is captured.

  The pressure fluid ejecting means includes a nozzle from which the pressure fluid is ejected and a swinging means configured to swing the nozzle.

  As for the nozzle, the rotating shaft is penetrated by the base end part so that it may orthogonally cross with respect to the axial direction of a nozzle body. And a nozzle is arrange | positioned above a screen so that the axis line of a nozzle main body may orthogonally cross with respect to the linear part of a screen.

  The oscillating means includes a large-diameter first rotating body, a small-diameter second rotating body, and a link mechanism. A point at the peripheral edge of the first rotating body and a point at the peripheral edge of the second rotating body are connected by a straight link, and the rotation of the second rotating body causes the first rotating body to swing, In conjunction with this, the rotation shaft of the nozzle is swung within a predetermined angle range.

  By this swinging means, the nozzle swings within a predetermined angle range with respect to a position orthogonal to the straight portion of the screen.

JP 2009-233614 A JP 2005-188072 A

  In the case of the dust removing device of Patent Document 1, the nozzle angle adjustment mechanism is provided, but the angle is adjusted manually, and the angle is not automatically varied and adjusted. . For this reason, the angle of the pressure fluid ejected from the nozzle to the pallet is always constant, and there is a problem that it is difficult to eject the pressure fluid uniformly over the entire pallet.

  In the case of the dust removing device of Patent Document 2, since the nozzle is mechanically oscillated, the pressure fluid can be ejected uniformly over the entire screen, but parts that constitute the oscillating mechanism are required. As a result, the number of parts is increased, and the assembly process is increased, resulting in an increase in cost.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention has an object to provide a dust removing device that can swing a nozzle with a simple and inexpensive configuration and can uniformly eject a pressure fluid to the entire workpiece. And

  In order to solve the above-described problems, a dust removing device according to the present invention includes a transport conveyor that transports a work and a work processing space for removing dust attached to the work transported by the transport conveyor. A main body, a nozzle disposed in the main body and having a nozzle for ejecting pressurized fluid pressurized against the workpiece, pressure fluid supply means for supplying the pressure fluid to the nozzle, and a main body connected to the main body In the dust removing apparatus including the dust collector that sucks dust removed by the pressure fluid ejected from the nozzle outlet, the nozzle is formed by bending with an elastic material, and one end thereof is a fixed end. In addition, the other end is a free end, and the jet port is formed at the other end.

  According to such a configuration, since the nozzle is formed by being bent by the elastic material, when a fluid is supplied to the nozzle, the pressure of the fluid acts on the curved nozzle so as to extend. In contrast, the nozzle tries to return to the original curved state by its own elasticity. That is, the other end portion (jet port) of the nozzle reciprocates (oscillates) in a circular arc locus between a curved position and a slightly expanded position with the one end portion as a fulcrum. . Accordingly, the area of the fluid ejected from the nozzle with respect to the surface of the workpiece is increased by the amount that the other end of the nozzle is swung. As a result, dust adhering to the surface of the workpiece is removed over a wide range.

  Further, according to the present invention, the nozzle outlet may be configured such that the other end of the nozzle is formed flat or tapered.

  According to this configuration, the nozzle outlet is flattened or tapered, so that the pressure of the fluid at the outlet increases as the area of the outlet decreases, so that the nozzle expands against the curved nozzle. The pressure of the acting fluid becomes larger, and accordingly, the range in which the other end of the nozzle (jet port) reciprocates (swings) becomes larger, and dust adhering to the surface of the workpiece can be removed in a wider range. It becomes like this.

  According to the present invention, one end of a nozzle made by bending with an elastic material is fixed, the other end is a free end, and a jet outlet for ejecting fluid is formed at the other end. The nozzle can be swung with a simple and inexpensive configuration, and the pressurized fluid can be ejected uniformly over the entire surface of the workpiece.

The front view which shows the dust removal apparatus which concerns on one Embodiment of this invention. The right view of FIG. The front view which removed the main-body part of the dust removal apparatus. FIG. 4 is a plan view of FIG. 3. The top view of FIG. (A) is a figure which shows the state which a nozzle rock | fluctuates, (b) is an enlarged view of a nozzle. FIG. 4 is a left side view of FIG. 3.

  Hereinafter, a dust removing device according to an embodiment of the present invention will be described with reference to FIGS. The left side of FIGS. 1, 4 and 5 is the front side of the conveyor, the right side of FIGS. 1, 4 and 5 is the rear side of the conveyor, and the upper side of FIGS. 4 and 5 is the left side of the conveyor. 4 and 5 is the right side of the conveyor. In the present embodiment, the workpiece from which dust is removed is intended for electronic devices, resin molded products, and the like.

  As shown in FIG. 1, the dust removing device 1 according to the present embodiment includes a transport conveyor 2, a main body 3, a nozzle 6, and peripheral devices for performing a required processing operation on a workpiece.

  As shown in FIGS. 1 and 2, the transport conveyor 2 includes a moving unit 20A and a transport mechanism unit 20B. The moving unit 20 </ b> A is configured by a carriage 200. The carriage 200 includes a support frame 201, four leg portions 202,..., And a placement plate 203. The support frame 201 is assembled such that an opening having a rectangular shape in plan view is formed by the front, rear, left and right support plates 201a to 201d. The front and rear support plates 201a and 201b have a length slightly larger than the width dimension of the belt. The left and right support plates 201c and 201d have a sufficient length from loading to unloading the workpiece. The leg portions 202 are fixed to the four corner portions of the support frame 201 at their upper end portions. Also, casters 202a,... Are rotatably attached to the lower ends of the legs 202,. The mounting plate 203 has a rectangular shape in plan view, and is attached to the lower portion of the leg portions 202,... So as to be parallel to the opening portion of the support frame 201.

  As shown in FIGS. 3 and 4, the transport mechanism unit 20 </ b> B includes a pair of winding rollers 204 a and 204 a, a drive unit 205, and an endless belt-shaped transport belt 206. The winding rollers 204a and 204a are rotatably supported at both ends of the left and right support plates 201c and 201d of the support frame 201. The drive unit 205 is disposed below the carry-in side of the support frame 201, and includes a transport motor 205a, a speed reduction mechanism 205b of the transport motor 205a, a pair of tension rollers 204b and 204b, and a drive roller 204c. Yes. In the transport motor 205a, a sprocket 205c is fixed to a rotating shaft (not shown). The tension rollers 204b and 204b are arranged in the drive unit 205 so as to be parallel to each other with a predetermined interval. The driving roller 204c is disposed below the tension rollers 204b and 204b. Then, the driving chain 205d is wound around the sprocket 205c and the driving roller 204c, and the conveying belt 206 is rotationally driven. The conveyor belt 206 is wound around winding rollers 204a and 204a, tension rollers 204b and 204b, and a driving roller 204c.

  Further, as shown in FIG. 5, the transport conveyor 2 is provided with carry-in sensors 21 a and 21 b that detect a work carried into the main body 3 on the upstream side (before the main body 3). In addition, on the downstream side (rear of the main body 3), unloading side sensors 22 a and 22 b that detect the work unloaded from the main body 3 are arranged.

  As shown in FIG. 5, the main body 3 is installed slightly behind the conveyor belt 206 of the conveyor 2. The main body 3 includes a front plate 3a and a rear plate 3b, a left plate 3c and a right plate 3d, and a top plate 3e, as shown in FIGS. The front side plate 3a and the rear side plate 3b are disposed so as to straddle the transport belt 206 of the transport conveyor 2 and to be orthogonal to the transport direction. The front plate 3a is disposed on the upstream side in the transport direction, and the rear plate 3b is disposed on the downstream side in the transport direction. The left side plate 3c and the right side plate 3d are disposed on both sides of the transport belt 206 of the transport conveyor 2. The top plate 3e is fixed to the upper end portions of the side plates 3a to 3d so as to seal the upper surfaces of the openings formed by the side plates 3a to 3d. As shown in FIG. 2, a rectangular workpiece carry-in port 30a is formed at the center lower portion of the front plate 3a, and a rectangular workpiece carry-out port 30b is formed at the center lower portion of the rear plate 3b. . A work space S is formed inside the main body 3 by the front side plate 3a and the rear side plate 3b, the left side plate 3c and the right side plate 3d, and the top plate 3e. The side plates 3a to 3d are made of aluminum, and an acrylic resin cover 31 capable of suppressing static electricity and charging is mounted so as to cover the side plates 3a to 3d.

  As shown in FIG. 1, an off-the-shelf ionizer (trade name) is attached as a static eliminating device 4 at a substantially central portion of the front side plate 3 a of the main body 3. The static eliminator 4 removes static electricity from the workpiece and makes it easier to remove dust adhering to the surface of the workpiece. Further, the power source 4 a of the electrostatic removal device 4 is disposed on the back side of the overall control panel 8.

  As shown in FIGS. 1, 2, and 5, a supply hose 5 for supplying air that can be bent and stretched is provided inside the main body 3. As this supply hose 5, a ready-made coolant hose (trade name) is used. Then, the supply hose 5 is arranged so that both side portions of the supply hose 5 are bent along the height direction of the left side plate 3c and the right side plate 3d of the main body 3, and along the width direction of the top plate 3e, The central part of the supply hose 5 is arranged linearly. Further, joints 50,... For connecting the nozzles 6 are arranged on the supply hose 5 at a predetermined interval. One end of the nozzle 6 is fixed to each joint 50 so that the flow path of the supply hose 5 and the flow path of the nozzle 6 communicate with each other. One end of the nozzle 6 fixed to the joint 50 is a fixed end 6a, and the other end is a free end 6b.

  As shown in FIGS. 6 (a) and 6 (b), the nozzle 6 is manufactured by being bent by an elastic material. For example, polyurethane is used as the elastic material, and the total length L in a straight state is 125 mm ± 5, the outer diameter is 4 to 6 mm, the inner diameter (the diameter of the jet port 60) is 2 to 4 mm, and the arc shape is a radius of 118 to 162 mm. Has a part. The nozzle 6 has the same inner diameter from one end to the other end. Further, the cross section of the nozzle 6 is circular.

  And the nozzle 6 is connected to the joint 50 of the supply hose 5 mentioned above, and is arrange | positioned at the both right and left sides of the main body 3, and the upper part of the main body 3, respectively. The pair of nozzles 6 and 6 disposed on the left and right side portions of the main body 3 are disposed so that the distance between the nozzles 6 and 6 decreases toward the other end portion. A plurality of (three in the present embodiment) nozzles 6,... Arranged at the upper part of the main body 3 are arranged at predetermined intervals along the width direction of the main body 3. All of the nozzles 6,... Are arranged so that the jet outlet 60 is located in the vicinity of the surface of the workpiece.

  And as for the nozzles 6 and 6 arrange | positioned at the both right and left sides of the main body 3, the jet nozzles 60 and 60 rock | fluctuate with respect to the height direction of a workpiece | work. Further, in each nozzle 6 arranged at the upper part of the main body 3, the jet port 60 swings in the width direction with respect to the upper surface of the workpiece. The oscillation of each nozzle 6 occurs because the other end of each nozzle 6 is a free end 6b and is curved by an elastic material. That is, when air is supplied to the nozzle 6, the air pressure acts on the curved nozzle 6 so as to extend. On the other hand, the nozzle 6 tries to return to the original curved state by its own elasticity. That is, the other end portion (jet port 60) 6b of the nozzle 6 is slightly extended with the one end portion 6a as a fulcrum and shown in the curved position shown by the solid line in FIG. 6A and the chain line in FIG. 6A. The position is reciprocated (oscillated) while drawing an arcuate locus.

  Further, as shown in FIG. 6A, when the swinging range of the nozzle 6 is represented by an angle, for example, a reference line (an axis when the nozzle 6 is assumed to be a straight line) L and the other end 6b of the nozzle. Is in a range of 18 to 27 degrees, and is represented by a distance H in a range of 75 to 110 mm. In this manner, the contact area of the fluid ejected from the nozzle 6 with respect to the surface of the workpiece increases as the other end portion 6b of the nozzle 6 swings. As a result, dust adhering to the surface of the workpiece is removed over a wide range.

  And the compressor (not shown), the supply hose 5, the nozzle 6, the pressure fluid control panel 9 mentioned later, and the air cleaner 90 are connected by the connection hose 7, as shown in FIGS.

  As shown in FIG. 7, the peripheral device includes an overall control board 8, a pressure fluid control board 9 as a pressure fluid supply means, a transfer conveyor speed control board 10, and a dust collector 11. The overall control panel 8 is attached to the lower right side of the lower portions of the front leg portions 202, 202 of the conveyor 2. The overall control panel 8 supplies power to the carry-in sensors 21a and 21b, the carry-out sensors 22a and 22b, the pressure fluid control board 9, the drive unit 205, the transfer conveyor speed control board 10, and the dust collector 11, Based on the detection signals of the carry-in sensors 21a and 21b and the carry-out sensors 22a and 22b, the supply / stop of the pressurized pressure fluid and the transfer / stop of the transfer conveyor 2 are controlled.

  The pressure fluid control panel (pressure fluid supply means) 9 is attached between the legs 202 and 202 at the upper part of the legs 202 and 202 on the front side of the conveyor 2. The pressure fluid control panel 9 has an electromagnetic valve 91 that turns on and off in 50 ms or 70 ms (see FIGS. 1 and 3). Moreover, the compressor (not shown) which supplies the pressurized fluid pressurized to the nozzle 6 and the air cleaner 90 are provided as another apparatus which comprises a pressurized fluid supply means. The compressor is disposed on the side of the carriage 200 and supplies pressurized air to the nozzles 6. The air cleaner 90 is attached to a mounting plate 900 that is installed at the lower rear side of the conveyor 2 (see FIG. 2). As the air cleaner 90, a ready-made micro mist separator (trade name) is used. The air cleaner 90 cleans the air supplied from the compressor. The pressure fluid control unit intermittently supplies the air from the compressor to the nozzle 6 by intermittently controlling the pulse control signal (the electromagnetic valve 910 is turned on and off in a short cycle).

  Further, a transfer conveyor speed control board 10 is disposed between the overall control board 8 and the pressure fluid control board 9. The transport conveyor speed control panel 10 has a control unit (not shown) that controls the rotational speed of the transport motor 205 a of the drive unit 205. And the conveyance speed with respect to a workpiece | work is controlled by this control part.

  The dust collector 11 is placed on the placement plate 203 of the conveyor 2 so as to be positioned below the main body 3. And the duct 110 is connected to the dust collector 11 so that the opening part 110a may be located in the bottom part of the main body 3 (both right and left outer parts of the conveyor belt 206). Dust removed by the fluid ejected from the nozzle 6 is collected. The exhaust from the dust collector 11 is discharged in a direction orthogonal to the transport direction.

  Next, the usage mode will be described. When the work is transported from the upstream side of the transport belt 206, the carry-in sensors 21a and 21b detect the transported work. Based on the detection signals of the carry-in sensors 21a and 21b, the ionizer as the electrostatic removal device 4 operates. On the other hand, air is intermittently supplied to each nozzle 6,... By intermittently controlling a pulse control signal of 50 ms or 70 ms. With this air supply, the nozzles 6, 6 arranged on both sides of the main body 3, the jet outlets 60, 60 are swung in the vertical direction, while the nozzles 6,. The outlets 60 oscillate in the left-right direction. The fluid supplied from the nozzles 6,... Is ionized air by synthesizing ions from the electrostatic removal device 4 and air from the nozzle 6. This ion air removes the dust adhering to the surface of the workpiece while removing the static electricity on the surface of the workpiece.

  Then, when the work is carried in from the carry-in port 30a of the main body 3 in a state where the nozzles 6 are swung, the jet ports 60 of the nozzles 6 arranged on both sides of the main body 3 are directed to the both side surfaces of the work. By swinging in the height direction, air is ejected in the height direction with respect to both side surfaces of the workpiece, and dust adhering to both side surfaces of the workpiece is removed. On the other hand, when the jet outlet 60 of each nozzle 6 arranged in the upper part of the main body 3 swings in the width direction with respect to the upper surface of the workpiece, air is jetted in the width direction with respect to the upper surface of the workpiece. Dust adhering to the upper surface is removed. That is, the dust adhering to the surface of the workpiece is removed over a wide range.

  The dust removed by the air ejected from each nozzle 6 is collected by the dust collector 11.

  Then, when the workpiece from which the dust has been removed is carried out from the carry-out port 3a of the main body 3 and detected by the carry-out side sensors 22a and 22b, the air from the pressure fluid control panel 9 is stopped based on the detection signal. At the same time, the motor of the conveyor 2 is also stopped.

  Thus, according to the present embodiment, one end portion of the nozzle 6 that is produced by bending with an elastic material is the fixed end 6a, the other end portion is the free end 6b, and a fluid is supplied to the other end portion 6b. Since the jet outlet 60 is formed, the nozzle 6 can be swung with a simple and inexpensive configuration, and the pressurized fluid can be jetted uniformly over the entire surface of the workpiece.

  In the case of the above embodiment, the spout 60 formed at the other end of the nozzle 6 is circular, but may be a flattened ellipse (for example, a spout of about 1 mm), A tapered cone shape may be used. In this case, the pressure applied to the other end portion 6b of the nozzle 6 is further increased, and the one end portion serves as a fulcrum, and the other end portion 6b of the nozzle 6 swings, so that dust can be removed over a wide range.

  In the case of the embodiment, the pair of nozzles 6 and 6 are arranged on both sides of the main body 3 so that the other end portions 6b face inward, and the width direction of the main body 3 is disposed on the upper portion of the main body 3. Are arranged on the left side plate 3c and the right side plate 3d of the main body 3, but the plurality of nozzles 6, ... may be arranged linearly along the conveying direction. A plurality of nozzles 6,... May be arranged in a circular shape along the left side plate 3c, the right side plate 3d, and the top plate 3e. In short, it is only necessary that the nozzle 6 is arranged so that the pressure fluid can be supplied substantially uniformly corresponding to the surfaces of the workpieces of various shapes.

  DESCRIPTION OF SYMBOLS 1 ... Dust removal apparatus, 2 ... Conveyor, 3 ... Main body, 6 ... Nozzle, 60 ... Nozzle outlet, 6a ... Fixed end, 6b ... Free end, 9 ... Pressure fluid control panel (pressure fluid supply means), 11 ... Dust collector, S ... Work processing space

Claims (2)

A conveyor that conveys the workpiece, a main body in which a work processing space for removing dust adhering to the workpiece conveyed by the conveyor is provided, and a pressure that is applied to the workpiece A nozzle having an outlet for ejecting the pressurized fluid, pressure fluid supply means for supplying the pressure fluid to the nozzle, and dust that is connected to the main body and is removed by the pressure fluid ejected from the nozzle outlet. In a dust removing device comprising a dust collector for collecting,
The nozzle is produced by bending with an elastic material, one end is a fixed end, the other end is a free end, and a spout is formed at the other end. apparatus.   The dust removing device according to claim 1, wherein the nozzle outlet is formed by flattening or tapering the other end of the nozzle.

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