WO2015194477A1 - ブラスト加工装置及びブラスト加工装置列 - Google Patents
ブラスト加工装置及びブラスト加工装置列 Download PDFInfo
- Publication number
- WO2015194477A1 WO2015194477A1 PCT/JP2015/067037 JP2015067037W WO2015194477A1 WO 2015194477 A1 WO2015194477 A1 WO 2015194477A1 JP 2015067037 W JP2015067037 W JP 2015067037W WO 2015194477 A1 WO2015194477 A1 WO 2015194477A1
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- WIPO (PCT)
- Prior art keywords
- blasting
- blasting apparatus
- injection
- suction
- classification
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
- B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
Definitions
- the present disclosure relates to a blasting apparatus that uses an air source to sharpen a workpiece. More specifically, the present invention relates to a blasting apparatus having excellent maintainability.
- Patent Document 1 describes a blasting apparatus in which a blasting chamber is defined inside a casing.
- a work hole is provided on the front surface of the housing
- an opening / closing door is provided on the side surface of the housing
- a fluid cycloton, a filter, and an air exhauster are disposed on the back surface of the housing.
- Patent Document 2 describes a blasting apparatus in which a blasting chamber is defined inside a housing and does not include a dust collector.
- a working hole and a discharge pipe are provided on the side of the casing, and an air hole and a filter are provided on the rear side of the casing.
- the conventional blast processing apparatus has insufficient maintainability.
- the blasting apparatus described in Patent Documents 1 and 2 when performing maintenance, it is necessary to perform maintenance by accessing not only the front surface of the device but also the side surface and the back surface of the device. For this reason, it is necessary to secure a space required for maintenance around the equipment. Furthermore, an operator needs to move around the equipment.
- a blasting apparatus includes a housing that defines a blasting chamber therein, and a blasting nozzle that is disposed in the blasting chamber and that sprays an injection material together with compressed air. It is an apparatus, Comprising: It is comprised so that a maintenance can be performed only from the front of a blast processing apparatus.
- the front surface of the blast processing apparatus is configured as a maintenance surface of the blast processing apparatus, that is, a surface that is always accessed during maintenance. Therefore, since the worker can perform maintenance only from the front of the apparatus, the worker's maintenance becomes easy. Furthermore, it is not necessary to provide a work space for maintenance on the side or rear of the apparatus, and it is sufficient if there is a work space in front of the apparatus. Therefore, this apparatus is excellent in maintainability.
- the front of the apparatus means the operation of the blasting apparatus (for example, operation / stop of the blasting apparatus, setting and taking out of the work in the blasting chamber, and manual scanning of the work or the blasting nozzle) These scans and the like are performed.
- the housing in the blast processing apparatus may include a standing outer frame, a box-shaped upper casing having an opened bottom surface, and a lower casing having an opened upper end.
- the lower casing may be supported by the outer frame.
- an upper casing may be provided so that rotation in the front-back direction is possible centering
- the blasting apparatus may further include a discharge mechanism that discharges the injection material.
- the blasting device may be configured to allow access to the discharge mechanism from the front of the blasting device. In this case, the operator can perform maintenance of the discharge mechanism from the front of the apparatus.
- the blasting apparatus may further include a suction mechanism that sucks the blasting chamber and collects dust.
- the blasting device may be configured to allow access to the suction mechanism from the front of the blasting device. In this case, the operator can perform maintenance such as replacement of a filter that collects dust from the front of the apparatus and collection of dust.
- the blasting apparatus may further include an injection material classification mechanism in a path between the blasting chamber and the suction mechanism.
- the classifying mechanism includes a rectifying member, a classifying member, a suction member, and an input member, and each configuration may be as follows. (1)
- the rectifying member has a cylindrical shape, is provided such that the axis extends in the horizontal direction, and one end surface is closed by a closing plate.
- the classifying member is connected to the other end of the rectifying member so as to be perpendicular to the axis of the rectifying member, and has a space for classifying the granular material containing the injection material therein.
- the suction member has a cylindrical shape, and one end is connected to the suction mechanism.
- the charging member is a member for charging the powder particles into the classification mechanism, and is provided on the closing plate side of the rectifying member.
- the charging member is arranged so that the injection material is transferred toward the classification member along the inner wall of the rectifying member.
- the classifying mechanism configured in this way is lower in height than the cyclone classifier widely used in blasting machines, so there is space for placing a stepladder to maintain the classifying mechanism on the side of the blasting machine. There is no need to provide it. In this case, the operator can perform maintenance of the classification mechanism from the front of the apparatus.
- the blasting apparatus may further include an injection material storage hopper, an injection hose connected to the blasting nozzle from the storage hopper, and an injection hose replacement mechanism.
- the blasting device may be configured to allow access to the replacement mechanism from the front of the blasting device. In this case, the operator can perform maintenance for replacing the injection hose from the front of the apparatus.
- the blasting apparatus may further include an injection material transfer mechanism for transferring the injection material to the blasting nozzle.
- the blasting device may be configured to allow access to the spray material transfer mechanism from the front of the blasting device. In this case, the operator can perform maintenance of the spray material transfer mechanism from the front of the apparatus.
- the upper casing may be provided with an observation window capable of observing the blasting chamber from the front of the blasting apparatus. In this case, the operator can observe the state in the blasting chamber from the front of the apparatus.
- the outer frame may be provided with an operation device that can adjust the jet pressure of compressed air from the front of the blasting apparatus.
- the operator can adjust the injection pressure from the front of the apparatus.
- the blasting device row according to another aspect of the present invention includes a plurality of the blasting devices described above.
- a plurality of blasting apparatuses are arranged in parallel. Since the blasting apparatus described above does not require a space for maintenance on the side thereof, the distance between the apparatuses can be shortened compared to the conventional apparatus.
- a blasting apparatus having excellent maintainability is provided.
- a blasting device row in which the distance between adjacent blasting devices is shorter than a conventional blasting device row.
- FIG. 1A is a front view
- FIG. 1B is a right side view
- FIG. 1C is a rear view.
- FIG. 3 is a schematic diagram (partial cross-sectional view) for explaining the blasting nozzle shown in FIG. 2.
- FIG. 4A is a side view
- FIG. 4B is a schematic diagram showing a cross section taken along the line AA in FIG. 4A.
- FIG. 4A is a schematic diagram explaining the storage hopper and the injection material transfer mechanism which are shown in FIG.
- FIG. 1 is a schematic view showing an appearance of a blasting apparatus 1 according to the present embodiment.
- 1A is a front view
- FIG. 1B is a right side view
- FIG. 1C is a rear view.
- FIG. 2 is a schematic diagram showing a cross section along the line AA in FIG.
- the blasting apparatus 1 includes, for example, a blasting nozzle 10, a housing 20, a classification mechanism 30, a suction mechanism 40, a storage hopper 50, an injection material transfer mechanism 60, and a base 70 that forms a bottom surface.
- the blasting nozzle 10 is a so-called suction type.
- the blast processing nozzle 10 is disposed in a blast processing chamber R described later, and injects an injection material together with compressed air.
- FIG. 3 is a schematic diagram (partial sectional view) for explaining the blasting nozzle shown in FIG.
- the blasting nozzle 10 includes, for example, a nozzle holder 11, a cylindrical air nozzle 12, and a cylindrical injection nozzle 13.
- the mixing chamber 11c which mixes compressed air and an injection material is formed in the inside.
- the nozzle holder 11 includes three openings that communicate with the mixing chamber 11c.
- the nozzle holder 11 includes an injection material suction port 11a, an air nozzle insertion port 11d, and an injection nozzle insertion port 11e.
- the center of the air nozzle insertion port 11d and the injection nozzle insertion port 11e is coaxial.
- the injection material suction port 11a is formed in a direction crossing the direction in which the air nozzle insertion port 11d and the injection nozzle insertion port 11e are arranged.
- the injection material suction port 11 a is an opening for introducing (suction) the injection material into the nozzle holder 11.
- the injection material suction port 11 a communicates with a path 11 b formed inside the nozzle holder 11.
- the path 11b communicates with the mixing chamber 11c.
- the air nozzle 12 is fixed by being inserted into the air nozzle insertion port 11d (one end side of the nozzle holder 11 (upper end surface side in FIG. 3)).
- the injection nozzle 13 is fixed by being inserted into the injection nozzle insertion port 11e (the other end side of the nozzle holder 11).
- the air nozzle 12 and the injection nozzle 13 are arranged so that the center lines of the respective cross sections are located on substantially the same line.
- a mixing chamber 11 c is defined inside the nozzle holder 11 by the inner surfaces of the nozzle holder 11 and the injection nozzle 13.
- the air nozzle 12 is a nozzle for injecting compressed air into the nozzle holder 11.
- the compressed air path 12a has an accelerating portion 12b for accelerating the flow velocity of the compressed air.
- the air nozzle 12 is connected to a compressor (not shown).
- the injection nozzle 13 is a nozzle for injecting the compressed air and the injection material mixed in the mixing chamber 11c from the injection port 13a as a solid-gas two-phase flow.
- the solid-gas two-phase flow path includes an accelerating portion 13c continuously reduced in diameter from the end surface on the nozzle holder 11 side toward the tip, and a rectification that rectifies the flow of the solid-gas two-phase flow that has passed through the accelerating portion 13c. Part 13d.
- Adjustment of the injection pressure from the injection nozzle 13 is performed by a pressure adjustment valve V (operation device) disposed on the front surface of the outer frame 23 (the front side of the blasting apparatus 1), which will be described later.
- the pressure regulating valve V is provided in a path from an external air compressor (not shown) to the air nozzle 12.
- the pressure of the compressed air is adjusted by the pressure adjustment valve V so that the numerical value of the pressure gauge connected to the pressure adjustment valve V indicates a predetermined pressure during the injection from the injection nozzle 13.
- a solenoid valve E and a foot switch (not shown) connected to the solenoid valve E are provided in the middle of the path from the air compressor to the air nozzle 12.
- the electromagnetic valve E can be turned ON / OFF, that is, whether the compressed air is supplied to the air nozzle 12 or not.
- the foot switch can be arranged in front of the blasting apparatus 1 so that the operator can operate the foot switch while blasting. With this configuration, it is possible to switch ON / OFF the injection of the injection material only at least in front of the blasting apparatus 1.
- the housing 20 includes, for example, an upper casing 21, a lower casing 22, and an outer frame 23 fixed to the lower casing 22, as shown in FIGS. 1 and 2.
- the casing 20 defines a blast processing chamber R therein. Specifically, a blasting chamber R is defined inside the upper casing 21 and the lower casing 22.
- the upper casing 21 has, for example, a box shape with an open bottom.
- the shape of the opening is, for example, a quadrangle.
- the upper casing 21 is one of the members that define the blast processing chamber R.
- the upper casing 21 includes a top surface and a bottom surface that face each other in parallel to the base 70, and four side surfaces that are erected perpendicular to the bottom surface (left and right side surfaces that face each other, a front surface, and a front surface). And a slope provided to connect the top surface to the front surface and the back surface.
- An observation window (view window) 21 a through which the inside of the blast processing chamber R can be observed is provided on the slope on the front side of the upper casing 21.
- a lighting window 21 b for taking outside light into the blasting chamber R is provided on the top surface of the upper casing 21.
- the observation window 21a and the daylighting window 21b are formed by fitting a visible plate member made of, for example, quartz glass into a window frame member.
- a working part 21 c is provided on the front surface of the upper casing 21.
- the working unit 21 c is an opening that communicates with the blast processing chamber R.
- the working unit 21c serves both as an intake port for taking in outside air when the inside of the blasting chamber R is sucked and an opening for an operator to put his hand into the blasting chamber R during blasting.
- a rubber plate provided with a plurality of radial cuts from the center is fixed to the working portion 21c.
- the lower casing 22 has, for example, an inverted truncated cone shape with an upper end surface opened.
- the lower casing 22 is one of the members that define the blast processing chamber R.
- the lower casing 22 has an upper end surface that is slightly larger than the bottom surface of the upper casing 21, and has a shape in which the cross-sectional area continuously decreases toward the bottom surface.
- a frame body 22 a on which the lower end of the upper casing 21 is fitted is erected on the upper end of the lower casing 22.
- a charging member 34 described later is connected to the lower end of the lower casing 22, and the blast processing chamber R and the classification mechanism 30 are connected via the charging member 34.
- the outer frame 23 has, for example, a box shape with upper and lower end surfaces opened.
- the shape of the opening is, for example, a quadrangle.
- the outer frame 23 is erected on the base 70.
- the upper end of the outer frame 23 is fixed to the frame 22 a of the lower casing 22. That is, the outer frame 23 supports the lower casing 22.
- the outer frame 23 can fix the lower casing 22 to the base 70 so as to have a predetermined height. Openings (notches) 23 a and 23 b that can access the inside of the outer frame 23 are provided at the front and lower portions of the rear surface, respectively.
- the opening 23a on the front side of the outer frame 23 is used by an operator when maintaining the classification mechanism 30, the suction mechanism 40, the storage hopper 50, or the injection material transfer mechanism 60. Can be used to access The opening 23 b on the back side of the outer frame 23 can exhaust the air sucked by the suction mechanism 40 and dissipate heat generated by the suction mechanism 40.
- a hinge 24 is provided on the back surface of the outer frame 23 so that the lower end of the back surface of the upper casing 21 and the upper end of the back surface of the outer frame 23 (that is, the lower casing 22) are connected.
- the upper casing 21 is provided so as to be rotatable in the front-rear direction around the lower end of the back surface thereof. More specifically, the upper casing 21 is rotatable around a hinge 24. By rotating the upper casing 21, the blasting chamber R can be opened and closed on the front surface of the blasting apparatus 1.
- a latch lock 25 is provided on the front surface of the outer frame 23. The upper casing 21 and the outer frame 23 (that is, the lower casing 22) are fixed by the latch lock 25.
- a sensor S that detects that the upper casing 21 is closed is provided on a side surface of the outer frame 23. If the sensor S does not detect that the upper casing 21 is closed, the blasting apparatus 1 does not operate. That is, in the state where the blasting chamber R is open, the injection material cannot be injected from the blasting nozzle 10. For this reason, the safety of the worker is improved.
- a processing plate 26 on which a workpiece can be placed when performing blasting is fixed.
- the processed plate 26 is provided with a plurality of openings through which the granular material containing the propellant can pass toward the bottom.
- FIG. 4 is a schematic diagram for explaining the classification mechanism 30 shown in FIG. 4A is a side view
- FIG. 4B is a schematic diagram showing a cross section taken along the line AA in FIG. 4A.
- the classification mechanism 30 of the present embodiment is supplied with a granular material containing an injection material from the lower casing 22.
- the classification mechanism 30 includes, for example, a cylindrical rectifying member 31 having both ends opened, a substantially box-shaped classification member 32, a cylindrical suction member 33, and a rectangular cylindrical charging member 34.
- the cylindrical straightening member 31 has its axis (center axis) extending in the horizontal direction (X direction).
- One end surface of the rectifying member 31 (the right end surface in FIG. 4B) is closed by a ring-shaped closing plate 31a and a suction member 33 described later.
- a charging member 34 is connected to the lower end of the rectifying member 31.
- the other end of the rectifying member 31 (the left end surface in FIG. 4B) is connected to the upper portion of the classification member 32. Thereby, the inside of the rectification member 31 and the inside of the classification member 32 communicate with each other.
- the box-shaped classification member 32 has a vertically long rectangle when viewed from the front direction (positive direction of the Y axis), and has an upper portion that is circular and a lower portion that is shorter than the upper portion when viewed from the side direction (X direction). More specifically, the upper part of the classification member 32 has a circular shape whose longitudinal section viewed from the side of the apparatus (the viewpoint (X direction) in FIG. 4A) is equal to or larger than the diameter of the rectifying member 31.
- the classification member 32 is connected to the other end of the rectifying member 31 so as to be perpendicular to the axis of the rectifying member 31.
- the lower part of the classification member 32 is extended so that a space
- a storage hopper 50 is fixed to the bottom of the classification member 32.
- the axis (center axis) of the cylindrical suction member 33 extends in the horizontal direction (X direction).
- the outer diameter of the suction member 33 is smaller than the inner diameter of the rectifying member 31.
- the suction member 33 is disposed inside the rectifying member 31.
- the suction member 33 is disposed concentrically with the rectifying member 31. As described above, the rectifying member 31 and the suction member 33 form a double cylindrical structure.
- One end of the suction member 33 (the right end in FIG. 4B) is connected to the opening of the ring-shaped closing plate 31a.
- One end of the suction member 33 is connected to the suction mechanism 40.
- the suction mechanism 40 When the suction mechanism 40 is operated, the space of the rectifying member 31 and the classification member 32 is sucked from the suction member 33, so that the granular material including the outside air and the injection material is sucked into the classification mechanism 30 from the input member 34.
- the introduced outside air is directed toward the classification member 32 by the suction force from the suction member 33.
- the input member 34 is provided so that the lower end surface 34 a thereof is tangent to the circumferential inner wall surface of the rectifying member 31.
- the sucked outside air is directed to the classification member 32 along the inner wall of the rectifying member 31 through the flow path (rectifying portion 31 b) formed by the inner wall surface of the rectifying member 31 and the outer wall surface of the suction member 33. Flows in a spiral. The granular material containing the propellant is transported toward the classification member 32 on this airflow.
- the feeding member 34 may be provided so that the extended imaginary line of the upper end surface 34 b is tangent to the outer circumferential wall surface of the suction member 33. Even in this case, the sucked outside air flows spirally toward the classification member 32 along the outer wall of the suction member 33 in the rectifying unit 31b, and the granular material including the propellant is transported by this air flow. Is done.
- the granular material containing the propellant that has passed through the rectifying unit 31b continues to advance while further turning and reaches the classification member 32. Then, the vehicle further advances while decelerating while continuing to turn (arrow “a” in FIG. 4B).
- the reusable propellant which is heavy particles, falls to the bottom of the classification member 32 due to gravity and accumulates in the storage hopper 50 (arrow “b” in the figure).
- cutting powder generated by blasting or non-reusable spray material that is light particles (hereinafter collectively referred to as “dust”) is sucked into the suction mechanism 40 from the suction member 33 (the arrow “ c ").
- the classification member located at the position facing the tip surface from the length of the rectifying unit 31b or the tip surface of the rectifying unit 31b (that is, the tip surface of the suction member 33 and the left cross section in FIG. 4B). If the length to the wall surface of 32 is too short, the classification efficiency decreases. If the length of the rectifying unit 31b is too short than necessary, the granular material containing the propellant cannot sufficiently obtain a turning force, so that it is sucked from the front end surface of the rectifying member 31 immediately after passing through the rectifying unit 31b. Will be. At that time, since the reusable spray material is also sucked, the classification efficiency is lowered.
- the propellant collides with the wall surface and rebounds without being sufficiently decelerated. Since the reusable injection material that has reached the vicinity of the suction member 33 is sucked from the front end surface of the suction member 33, the classification efficiency is lowered.
- the classification mechanism 30 itself is increased in size.
- the position of the rectifying unit 31b from the front end surface to the length L1 of the rectifying unit 31b is opposed to the front end surface.
- the ratio (L2 / L1) of the length L2 to the wall surface of a certain classifying member 32 may be set in the range of 1.25 to 1.75.
- the rectifying unit 31b In the rectifying unit 31b, if the diameter of the rectifying member 31 is too small with respect to the diameter of the suction member 33, the space of the rectifying unit 31b is too narrow and the passage of the granular material containing the injection material is hindered. As a result, in the rectifying unit 31b, the speed of the powder particles containing the propellant to be advanced toward the classification member 32 is reduced, and is immediately sucked from the front end surface of the suction member 33 after passing through the rectifying unit 31b. . At that time, since the reusable spray material is also sucked, the classification efficiency is lowered.
- the ratio (D2 / D1) of the diameter D2 of the rectifying member 31 to the diameter D1 of the suction member 33 is set to 1. in order to obtain good classification efficiency and prevent the classification mechanism 30 from becoming unnecessarily large. It may be set in the range of 5 to 2.0.
- the air flow rate in the rectifying unit 31b is too slow, the speed of the granular material containing the injection material becomes too slow, and the air is sucked from the tip surface of the suction member 33 immediately after passing through the rectifying unit 31b. If the air volume is too fast, the speed of the powder containing the spray material becomes too high, and the powder containing the spray material that has bounced off the wall of the classification member 32 moves to the vicinity of the tip of the suction member 33. In any case, since the reusable spray material is also sucked, the classification efficiency is lowered. Therefore, in order to obtain good classification efficiency, the air volume at the tip of the rectifying unit 31b may be adjusted to be 2.1 to 3.6 m 3 / min.
- the propellant includes ferrous and non-ferrous metal shots and cut wires and grids, ceramic particles (eg, alumina, silicon carbide, zircon, etc.), glass particles, resin particles (eg, nylon resin, melamine resin, urea) Resin), plant seed particles (for example, walnuts and peaches), and the like.
- the particle diameter is appropriately selected according to the specific gravity of these propellants.
- an injection material having a specific gravity of 1.1 to 4.0 alumina particles, glass beads, nylon, walnut, etc.
- a material iron shot, etc.
- it can be selected from a range of 45 to 500 ⁇ m.
- the classification member 32 is not limited to the shape of the present embodiment, and may be a cylindrical shape or a polygonal cylindrical shape. Moreover, you may have the part which reduced the area of the cross section continuously toward the lower end like this embodiment.
- the classifying mechanism 30 of this embodiment is smaller than the classifier used in a conventional blasting apparatus such as a vertical cyclone classifier. For this reason, the classification mechanism 30 can be disposed in the space between the base 70 and the lower casing 22. As a result, the height can be reduced as compared with the conventional blasting apparatus. Therefore, it is not necessary to provide a space for placing a stepladder for maintaining the classification mechanism 30 on the side of the blasting apparatus 1, and the maintenance of the classification mechanism 30 can be performed only on the front surface of the blasting apparatus 1.
- the suction mechanism 40 includes a suction mechanism main body 41 that is a sealed box, and a suction force generation source 42 connected to the suction mechanism main body 41.
- the suction mechanism main body 41 is connected to the classification mechanism 30, and a filter (not shown) for collecting dust is provided in the suction mechanism main body 41 in the path between the suction member 33 and the suction force generation source 42. Has been placed.
- a filter (not shown) for collecting dust is provided in the suction mechanism main body 41 in the path between the suction member 33 and the suction force generation source 42.
- the suction force generation source 42 is operated, dust in the classification mechanism 30 is sucked into the suction mechanism body 41 together with air. The sucked dust is collected by the filter when it is further transferred toward the suction force generation source 42, and only air is transferred to the suction force generation source 42.
- the collected dust can be collected by an operator accessing the opening / closing door 41a provided on the front surface of the suction mechanism main body 41 through the opening 23a, opening the opening / closing door 41a, and removing the filter. .
- the operation of the suction force generation source 42 is switched by operating the operation panel P disposed on the front surface of the outer frame 23.
- FIG. 5 is a schematic diagram illustrating the storage hopper and the injection material transfer mechanism shown in FIG.
- the upper end of the storage hopper 50 is fixed to the bottom of the classification member 32 of the classification mechanism 30.
- the storage hopper 50 has a box shape in which the internal space communicates with the classification mechanism 30.
- the storage hopper 50 is provided with an ejection material discharging mechanism.
- This discharge mechanism is constituted by an injection material discharge member 51 and a closing plug 52 provided at the bottom of the storage hopper 50.
- An opening for discharging the injection material in the storage hopper 50 is provided at the lower end of the injection material discharging member 51.
- the closing plug 52 can close this opening.
- one end of a cylindrical injection material discharging member 51 having both ends opened is fixed so as to cover the opening provided at the bottom of the storage hopper 50.
- a frustoconical closing plug 52 made of rubber is fitted to the other end of the injection material discharge member 51.
- an injection material transfer mechanism 60 for the injection material is arranged in the storage hopper 50.
- the injection material transfer mechanism 60 includes a circular injection material take-out pipe 61, a circular outside air introduction pipe mounting member 62, and an outside air introduction pipe 63.
- the injection material take-out pipe 61 is fixed so as to penetrate the side wall (the left side wall in FIG. 5, the negative direction of the Y axis) of the storage hopper 50.
- the outside air introduction pipe mounting member 62 is fixed so as to penetrate the side wall (the right side wall in FIG. 5, the positive direction of the Y axis) facing the injection material take-out pipe 61 in the storage hopper 50.
- the outside air introduction pipe 63 is inserted and fixed to the outside air introduction pipe mounting member 62.
- the outside air introduction pipe 63 is fixed so that the tip thereof is positioned in the injection material take-out pipe 61.
- the injection material take-out pipe 61 is connected to the injection material suction port 11 a of the blasting nozzle 10. Due to the suction force generated inside the blasting nozzle 10, an air flow toward the blasting nozzle 10 is generated in the injection material take-out pipe 61. At that time, outside air is sucked from the outside air introduction pipe 63. That is, the external airflow is jetted at the tip of the external air introduction pipe 63. Due to this air flow, an air flow toward the injection material suction port 11a is generated in the vicinity of the right end of the injection material take-out pipe 61. The propellant in the storage hopper 50 is sucked into the propellant take-out pipe 61 and transferred to the blasting nozzle 10 by riding on this airflow.
- the outside air introduction pipe 63 may be a circular pipe whose outer diameter is smaller than the inner diameter of the injection material take-out pipe 61.
- the outside air introduction pipe 63 has a shape in which a portion that continuously decreases in diameter so that the outer diameter is larger than the inner diameter of the injection material take-out pipe 61 and the tip thereof becomes smaller than the inner diameter of the injection material take-out pipe 61 is provided. Also good.
- the gap between the outer wall of the outside air introduction pipe 63 and the inner wall of the injection material take-out pipe 61 can be adjusted by adjusting the left and right positions of the outside air introduction pipe 63.
- the amount of the injection material sucked into the injection material take-out pipe 61 can be changed. If this gap is too wide, the spray material cannot be stably sucked into the spray material take-out pipe 61, so the spray amount from the blasting nozzle 10 is not stable. That is, stable blasting cannot be performed.
- this clearance gap is too narrow, it will inhibit that an injection material passes this clearance gap.
- the injection material take-out pipe 61 is connected to the injection material suction port 11a of the blasting nozzle 10 through an injection hose. Since the injection hose is worn by the passage of the injection material, the blasting apparatus 1 of the present embodiment includes an injection hose replacement mechanism. Specifically, the path from the injection material take-out pipe 61 to the injection material suction port 11a is composed of the injection hoses H 1 and H 2 and the connecting pipe C that is detachably connected to the injection hoses H 1 and H 2. Yes.
- the connecting pipe C is fixed to the lower casing 22 so that the connecting portions with the injection hoses H 1 and H 2 are located inside and outside the blast processing chamber R, respectively.
- the connecting portion of the connecting pipe C located outside the injection material take-out pipe 61 and the blasting chamber R, are connected by a discharge hose H 1.
- the connecting portion of the connecting pipe C located abrasives suction port 11a and the blasting chamber R, are connected by a discharge hose H 2.
- an exchange mechanism (not shown) for removably connecting the blasting nozzle 10 is fixed to the injection material suction port 11a.
- the exchange mechanism of this embodiment fixes the hose nipple to the injection material suction port 11a.
- abrasives suction port 11a and a respective hose fitting to the distal end of the discharge hose H 2 may be fixed.
- a bulky base 71 having a U-shaped vertical cross section can be fixed to the base 70.
- the bulky base 71 can be easily moved by a forklift or the like.
- the operation panel P is operated, the suction mechanism 40 is operated, and the inside of the blast processing chamber R is sucked.
- the latch lock 25 is unlocked, and the upper casing 21 is opened.
- a predetermined amount of the injection material is put into the blast processing chamber R, and the injection material is transferred to the storage hopper 50 via the classification mechanism 30.
- the upper casing 21 is closed and locked by the latch lock 25 to fix the upper casing 21 and the lower casing 22.
- the blast processing chamber R which is a closed space is formed. Since the blasting chamber R is sucked by the suction mechanism 40, it becomes negative pressure, and the outside air flows into the blasting chamber R from the working portion 21c.
- the foot switch is turned “ON” to inject a solid-gas two-phase flow containing the injection material from the injection port 13a.
- the pressure adjusting valve V disposed on the front surface of the blasting apparatus 1 is operated, and the pressure is adjusted while confirming with a pressure gauge disposed on the front surface of the blasting apparatus 1 so that a predetermined injection pressure is obtained.
- the foot switch is turned “OFF” to stop the injection of the injection material, and the hand is extracted.
- the latch lock 25 is unlocked, the upper casing 21 is opened, and the work is placed on the processed plate 26. Thereafter, the upper casing 21 is closed and locked by the latch lock 25 to fix the upper casing 21 and the lower casing 22.
- the operator After operating the operation panel P, the operator inserts his / her hand from the working part 21c to grip the blasting nozzle 10 and the workpiece, and then the foot switch is turned “ON” to inject a solid-gas two-phase flow from the injection port 13a. Then, the workpiece is scanned by the operator himself / herself through the glove, thereby cleaning the workpiece. At this time, since the inside of the blasting chamber R is at a negative pressure, the granular material including the spray material (the spray material and dust) does not leak out of the blast processing chamber R.
- the state of blasting can be performed from the observation window 21a provided on the front side slope.
- the daylighting window 21b is provided on the top surface, the blasting chamber R can be observed without providing a projector in the blasting chamber R.
- the granular material containing the injection material injected from the injection port 13 a is transferred to the classification mechanism 30 by the suction force of the suction mechanism 40.
- the classification mechanism 30 In the classification mechanism 30, it is separated into reusable spray material and dust.
- the classification mechanism 30 has a negative pressure due to the suction force of the suction mechanism 40, and an airflow toward the classification member 32 is generated while turning in the rectifying unit 31b.
- the granular material containing the propellant is charged into the classification mechanism 30 from the charging member 34 by this negative pressure.
- the granular material containing the injection material that has reached the rectifying unit 31b moves forward toward the classification member 32 while swirling by the airflow generated in the rectifying unit 31b.
- the heavy reusable injection material falls by gravity, and is stored by the storage hopper 50 located below.
- the reusable injection material transferred to the storage hopper 50 is transferred to the blasting nozzle 10 by the injection material transfer mechanism 60 and is again injected from the injection port 13a.
- light dust is sucked into the suction mechanism 40 and collected by a filter in the suction mechanism main body 41.
- the foot switch When the solid-gas two-phase flow is injected toward the work for a predetermined time, the foot switch is turned “OFF” to stop the injection of the solid-gas two-phase flow, and the hand is extracted. Thereafter, the latch lock 25 is unlocked, the upper casing 21 is opened, and the workpiece is collected. A series of blasting processes are completed by removing the spray material and dust adhering to the workpiece.
- the opening / closing door 41a located on the front surface of the blasting apparatus 1 is accessed through the opening 23a, the opening / closing door 41a is opened, the filter is removed, and the filter is cleaned.
- the degree of dust accumulation may be managed by attaching a differential pressure gauge to the suction mechanism main body 41 and managing this value, but may be managed to the extent that the filter is cleaned after one day of work.
- the worker When it is necessary to discharge the spray material from the blasting device 1 in order to change the spray material or to clean the blasting device 1, the worker is in a state where the upper casing 21 and the lower casing 22 are fixed. Accesses the stopper plug 52 through the opening 23 a of the outer frame 23, removes the stopper plug 52, discharges the injection material in the storage hopper 50, and then connects the stopper plug 52 to the opening of the injection material discharge member 51 again. Fit. Then, a nozzle (not shown) for injecting compressed air is inserted from the working unit 21c to remove the spray material and dust adhering in the blasting chamber R by air blowing, and from the blasting nozzle 10 by the foot switch. The injection material is removed from the injection material path by injection. By repeating this operation, the spray material in the blasting apparatus 1 can be completely discharged.
- the outside air introduction pipe 63 of the injection material transfer mechanism 60 is operated from the front surface of the blasting apparatus 1 (the opening 23a of the outer frame 23). do it.
- the injection hoses H 1 and H 2 wear with use. When the injection hoses H 1 and H 2 are worn, they can be replaced by removing the injection hoses H 1 and H 2 from the front surface of the blasting apparatus 1 and attaching new injection hoses H 1 and H 2 . That is, it can be realized by opening the upper casing 21 by the worker or by accessing the injection hoses H 1 and H 2 through the opening 23 a of the outer frame 23.
- the spray material and dust adhere to the observation window 21a and the lighting window 21b of the upper casing 21. Since the front side of the blasting chamber R of this embodiment can be opened, the observation window 21a and the daylighting window 21b can be cleaned only from the front of the blasting apparatus 1.
- maintenance of the blasting apparatus 1 is performed only from the front of the blasting apparatus 1.
- Maintenance includes, for example, inspection and replacement of the blasting nozzle 10, cleaning of the blasting chamber R, maintenance of the classification mechanism, cleaning and replacement of the filter of the suction mechanism 40, discharge of the injection material from the storage hopper 50, injection hose H 1 , exchange of H 2 , etc.
- the blast processing apparatus 1 it is not necessary to provide a space for maintenance around the area other than the front surface. That is, in the blast processing apparatus 1, it is not necessary to provide a space for maintenance on the left side surface, the right side surface, or the back surface. For this reason, the blast processing apparatus 1 can be installed even in a narrow space.
- an operation space that is an area for performing operations and settings in blasting is located in front of the blasting apparatus 1.
- the operations and settings in blasting are, for example, adjustment of injection pressure of solid-gas two-phase flow, observation of blasting, operation of suction mechanism, injection of solid-gas two-phase flow, workpiece scanning, mixing ratio of injection material There are settings, etc.
- the blast processing apparatus 1 it is not necessary to provide a space for operation around the area other than the front surface. That is, in the blast processing apparatus 1, it is not necessary to provide a space for operation on the left side surface, the right side surface, or the back surface. For this reason, the blast processing apparatus 1 can be installed even in a narrow space.
- Alumina-based particles (manufactured by Shinto Kogyo Co., Ltd .: AF24) were used as the propellant, and alumina-based fine particles (manufactured by Shinto Kogyo Co., Ltd .: WA # 800) were used as the pseudo dust.
- the powder material weighed and mixed so that the propellant is 98% and the pseudo dust is 2% is stored in the storage hopper 50, and then the blasting apparatus 1 is operated for 10 minutes. Powder particles were sprayed.
- the ratio (L2 / L1) of the length L2 from the front end surface of the rectifying unit 31b to the wall surface of the classification member 32 at the position facing the front end surface with respect to the length L1 of the rectifying unit 31b is 1.25 to 1.75.
- the ratio (D2 / D1) of the diameter D2 of the rectifying member 31 to the diameter D1 of the suction member 33 is 1.50 to 2.00, and the air volume in the rectifying unit 31b is 2.1 to 3.6 m 3 / min In both cases, the evaluation was “ ⁇ ” or “ ⁇ ” (Examples 1 to 8).
- Examples 1 and 4 in which L2 / L1 or D2 / D1 was relatively low were evaluated as “ ⁇ ”, but this evaluation is slightly inferior in classification performance, but it is only about “ ⁇ ” when the conditions are optimized. Shows things. Therefore, it was suggested that the present invention can be sufficiently applied to a blast processing apparatus. On the other hand, when the air volume deviated from 2.1 to 3.6 m 3 / min, all were evaluated as “x”, and it was found that the classification performance was inferior (Comparative Examples 1 and 2).
- the classification mechanism 30, the suction mechanism 40, the storage hopper 50, and the injection material transfer mechanism 60 are arranged in the space between the base 70 and the lower casing 22. be able to. Further, as shown in FIG. 1A, when the bulky base 71 is fixed to the lower surface of the base 70, the blasting apparatus 1 can be easily installed. As a result, compared to the conventional blasting apparatus, not only the above-described maintenance and operability but also installation is advantageous.
- the blasting apparatus 1 is a blasting apparatus array in which a plurality of blasting apparatuses 1 are arranged in parallel without any gaps. Can do.
- Injection material transfer mechanism 61 ... Injection material Extraction pipe, 62 ... outside air introduction pipe mounting member, 63 ... outside air introduction pipe, 70 ... base, 71 ... bulky base, a, b, c ... flow of air flow, injection material and dust in the classification mechanism, C ... connection tube, E ... solenoid valves, H 1, H 2 ... discharge hose, P ... operation panel, S ... sensor, V ... pressure control valve.
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Abstract
Description
(1)整流部材は、円筒形状を呈し、軸線が水平方向に延びるように設けられ、一端面が閉止板により閉止される。
(2)分級部材は、整流部材の軸線に対して直角となるように整流部材の他端に連結され、内部に噴射材を含む粉粒体を分級する空間を有する。
(3)吸引部材は、円筒形状であって、吸引機構に一端が連結される。そして、閉止板を貫通して整流部材の内部に配置され、整流部材と同心状に配置される。
(4)投入部材は、粉粒体を分級機構の内部に投入するための部材であり、整流部材の閉止板側に設けられている。この投入部材は、噴射材が整流部材の内壁に沿って分級部材に向かって移送されるように配置されている。
次に、本実施形態のブラスト加工装置1によるブラスト加工方法について説明する。
(1)初期の粉粒体の重量に対する試験後の大径粒子の重量の割合
(2)試験後の粉粒体の全重量に対する試験後の微粒子の重量の割合
評価基準は下記の通りである。
○・・・(1)が95%以上であり、且つ(2)が1%未満である。
△・・・(1)が95%以上であり、(2)が1%より多く5%未満である。
×・・・(1)が95%未満、又は(2)が5%以上である。
Claims (10)
- 内部にブラスト加工室を画成する筐体と、
前記ブラスト加工室に配置され、圧縮空気と共に噴射材を噴射するブラスト加工用ノズルと、
を備えるブラスト加工装置であって、
前記ブラスト加工装置の正面のみからメンテナンスを行えるように構成されている、ブラスト加工装置。 - 前記筐体は、
立設された外枠と、
底面が開口された箱状の上部ケーシングと、
前記外枠に支持された下部ケーシングであって、上端が開口された下部ケーシングと、
を備え、
前記下部ケーシングの上端に前記上部ケーシングの下端が嵌装されることで前記ブラスト加工室が画成され、
前記上部ケーシングは、その背面の下端を中心として前後方向に回動可能に設けられている、
請求項1に記載のブラスト加工装置。 - 前記噴射材を排出する排出機構をさらに備え、
前記ブラスト加工装置の正面から前記排出機構へのアクセスが可能に構成されている、請求項1に記載のブラスト加工装置。 - 前記ブラスト加工室内を吸引して粉塵を捕集する吸引機構をさらに備え、
前記ブラスト加工装置の正面から前記吸引機構へのアクセスが可能に構成されている、請求項2に記載のブラスト加工装置。 - 前記ブラスト加工室と前記吸引機構との経路に、前記噴射材の分級機構をさらに備え、
前記分級機構は、円筒形状を呈し、軸線が水平方向に延びるように設けられ、一端面が閉止板により閉止された整流部材と、
前記整流部材の軸線に対して直角となるように該整流部材の他端に連結され、内部に噴射材を含む粉粒体を分級する空間を有する分級部材と、
前記吸引機構に一端が連結された円筒形状の吸引部材であって、前記閉止板を貫通して前記整流部材の内部に配置され、前記整流部材と同心状に配置された吸引部材と、
噴射材を含む粉粒体を前記整流部材の内壁に沿って前記分級部材に向かって移送されるように前記分級機構の内部に投入するための部材であって、前記整流部材の前記閉止板側に設けられた投入部材と、
を備える、請求項4に記載のブラスト加工装置。 - 前記噴射材の貯留ホッパと、
前記貯留ホッパから前記ブラスト加工用ノズルに連結される噴射ホースと、
前記噴射ホースの交換機構と、
をさらに備え、
前記ブラスト加工装置の正面から前記交換機構へのアクセスが可能に構成されている、請求項1に記載のブラスト加工装置。 - 前記噴射材を前記ブラスト加工用ノズルへ移送する噴射材移送機構をさらに備え、
前記ブラスト加工装置の正面から前記噴射材移送機構へのアクセスが可能に構成されている、請求項1に記載のブラスト加工装置。 - 前記上部ケーシングには、前記ブラスト加工装置の正面から前記ブラスト加工室内を観察できる観察窓が設けられている、請求項2に記載のブラスト加工装置。
- 前記外枠には、前記ブラスト加工装置の正面から前記圧縮空気の噴射圧力を調整できる操作デバイスが設けられている、請求項2に記載のブラスト加工装置。
- 請求項1~9の何れか一項に記載のブラスト加工装置を複数備え、複数のブラスト加工装置が並列配置されている、ブラスト加工装置列。
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CN201580031653.9A CN106457519B (zh) | 2014-06-18 | 2015-06-12 | 喷丸加工装置以及喷丸加工装置列 |
KR1020167032115A KR20170020321A (ko) | 2014-06-18 | 2015-06-12 | 블라스트 가공 장치 및 블라스트 가공 장치열 |
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CN106625289A (zh) * | 2016-12-29 | 2017-05-10 | 温州职业技术学院 | 一种吊钩式抛丸机 |
CN106737226A (zh) * | 2016-12-29 | 2017-05-31 | 温州职业技术学院 | 一种吊钩式抛丸机工件自动装卸装置 |
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CN106491218B (zh) * | 2016-11-30 | 2022-02-22 | 桂林懿可仕机械制造有限公司 | 一体化喷砂器 |
CN106473820B (zh) * | 2016-11-30 | 2022-02-22 | 桂林懿可仕机械制造有限公司 | 一体化微量喷砂头 |
CN106618758A (zh) * | 2016-11-30 | 2017-05-10 | 桂林懿可仕机械制造有限公司 | 一体化喷砂头 |
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KR20170020321A (ko) | 2017-02-22 |
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