WO2020250714A1 - 切断機 - Google Patents

切断機 Download PDF

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Publication number
WO2020250714A1
WO2020250714A1 PCT/JP2020/021326 JP2020021326W WO2020250714A1 WO 2020250714 A1 WO2020250714 A1 WO 2020250714A1 JP 2020021326 W JP2020021326 W JP 2020021326W WO 2020250714 A1 WO2020250714 A1 WO 2020250714A1
Authority
WO
WIPO (PCT)
Prior art keywords
saw blade
saw
cutting machine
housing
duster
Prior art date
Application number
PCT/JP2020/021326
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
五史 小川
正寛 藤原
智洋 江尻
Original Assignee
工機ホールディングス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 工機ホールディングス株式会社 filed Critical 工機ホールディングス株式会社
Priority to JP2021525995A priority Critical patent/JP7306457B2/ja
Publication of WO2020250714A1 publication Critical patent/WO2020250714A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
    • B23D55/08—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades

Definitions

  • the present invention relates to a cutting machine having a saw blade for cutting a work material, a drive mechanism for operating the saw blade, and a housing in which the drive mechanism is housed.
  • Patent Document 1 describes a cutting machine having a saw blade for cutting a work material, a drive mechanism for operating the saw blade, and a housing in which the drive mechanism is housed.
  • the cutting machine described in Patent Document 1 includes a housing, a motor as a drive mechanism, an annular band saw as a saw blade, a first band saw guide, a second band saw guide, and a switch.
  • the motor is provided in the housing.
  • Band saws are arranged inside and outside the housing.
  • the switch is mounted on the housing. The band saw is supported by a first band saw guide and a second band saw guide.
  • the motor rotates and the band saw operates, that is, it rotates.
  • the part of the band saw When a part of the band saw operates outside the housing, the part of the band saw is held in posture by the first band saw guide and the second band saw guide. A part of the band saw cuts the work piece in the process of moving between the first band saw guide and the second band saw.
  • the inventor of the present application has the possibility that foreign matter adhering to the saw blade (band saw), for example, chips generated by cutting the work material, may enter the inside of the housing, or the saw blade is driven with the chips adhering to the inside. I recognized the problem that the saw wheel and the guide mechanism may be damaged or deformed when the above is continued.
  • An object of the present invention is to provide a cutting machine capable of removing foreign matter adhering to a saw blade.
  • the cutting machine of one embodiment is a cutting machine having a saw blade that can be operated to cut a work material, a drive mechanism that operates the saw blade, and a housing in which the drive mechanism is housed. It has a removing mechanism for removing foreign matter adhering to the saw blade by coming into contact with the saw blade.
  • foreign matter adhering to the saw blade can be removed.
  • 2 is a specific example 2 of the removal mechanism, and is a side view showing a case where the duster plate is worn. It is a front view which shows the specific example 3 of the removal mechanism provided in the cutting machine. It is a side view which shows the specific example 3 of the removal mechanism. It is a top view which shows the specific example 3 of the removal mechanism. 3 is a specific example 3 of the removal mechanism, and is a side view showing a case where the duster plate is worn. 3 is a specific example 3 of the removal mechanism, and is a plan view showing a case where the duster plate is worn.
  • the cutting machine disclosed in this embodiment is a working machine called a band saw.
  • the band saw 10 shown in FIG. 1 includes a housing 11, an electric motor 12, a saw blade 13, a guide mechanism 14, and a guide mechanism 15.
  • the housing 11 has a first saw case 16, a second saw case 17, and a motor case 18.
  • the first saw case 16 and the second saw case 17 are arranged at intervals.
  • the motor case 18 is arranged between the first saw case 16 and the second saw case 17 and is connected to the first saw case 16 and the second saw case 17.
  • the first saw wheel 19 is rotatably provided inside the first saw case 16.
  • the second saw wheel 20 is rotatably provided inside the second saw case 17.
  • the electric motor 12 is provided inside the motor case 18.
  • the electric motor 12 is, for example, a direct current brushless motor.
  • the speed reducer is provided inside the motor case 18 or inside the first saw case 16. The speed reducer transmits the torque of the output shaft of the electric motor 12 to the first saw wheel 19, and makes the rotation speed of the first saw wheel 19 slower than the rotation speed of the output shaft of the electric motor 12. Both the first saw wheel 19 and the second saw wheel 20 are pulleys.
  • the saw blade 13 is annular, and the saw blade 13 is wound around the first saw wheel 19 and the second saw wheel 20.
  • the saw blade 13 is made of metal and has a belt shape.
  • a cutting blade 21 is formed on the side edge of the saw blade 13 over the entire circumference.
  • the annular saw blade 13 is located inside the first saw case 16, inside the motor case 18, inside the second saw case 17, and in the space A1 between the first saw case 16 and the second saw case 17, respectively. To do.
  • the space A1 is outside the housing 11.
  • the guide mechanism 14 and the second guide mechanism 15 are arranged between the first saw case 16 and the second saw case 17.
  • the guide mechanism 14 is arranged from the inside to the outside of the first saw case 16. That is, a part of the guide mechanism 14 is arranged in the space A1.
  • the guide mechanism 15 is arranged from the inside to the outside of the second saw case 17. That is, a part of the guide mechanism 15 is arranged in the space A1.
  • the guide mechanism 14 and the guide mechanism 15 have substantially the same structure. In this embodiment, the structure of the guide mechanism 14 will be described for convenience.
  • the guide mechanism 14 has two rollers 22 and 23 as shown in FIGS. 2, 4, 5 and 6.
  • the roller 22 is rotatably supported by the support shaft 24, and the roller 23 is rotatably supported by the support shaft 25.
  • the support shafts 24 and 25 are made of metal, and for example, screw members are used as the support shafts 24 and 25, respectively.
  • the boss portion 26 is provided inside the first saw case 16, and the two support shafts 24 and 25 are attached to the boss portion 26.
  • the two support shafts 24 and 25 are arranged parallel to each other.
  • the boss portion for attaching the two support shafts 24 and 25 of the guide mechanism 15 is provided inside the second saw case 17.
  • the distance between the roller 22 and the roller 23 is set to a value that allows the saw blade 13 to pass through.
  • the two rollers 22 and 23 are both made of iron, for example, a cold-rolled steel plate.
  • the two rollers 22 and 23 in the guide mechanism 14 have saw blades 13 arranged on both sides in the thickness direction.
  • the two rollers 22 and 23 in the guide mechanism 15 are arranged on both sides of the saw blade 13 in the thickness direction. Therefore, a part of the saw blade 13 in the circumferential direction, that is, a portion located in the space A1, is screwed in the thickness direction with respect to the portion wound around the first saw wheel 19 and the second saw wheel 20. Has been done.
  • the guide plate 27 is arranged in the space A1, and the guide plate 27 is fixed to the first saw case 16.
  • the guide plate 27 is made of metal, for example.
  • the guide plate 27 has a slit 52 shown in FIG.
  • the grip 28 is provided on the motor case 18.
  • the handle 29 connects the motor case 18 and the first saw case 16.
  • the grip 28 and the handle 29 are points that the user grips when the user lifts the band saw 10 or moves the band saw 10 with respect to the processing material B1.
  • a trigger 30 is provided on the handle 29.
  • a trigger switch is provided inside the handle 29. When the user applies an operating force to the trigger 30, the trigger switch is turned on, and when the user releases the operating force on the trigger 30, the trigger switch is turned off.
  • a power supply, a switching circuit, and a controller for supplying electric power to the electric motor 12 are provided.
  • the switching circuit and controller are provided inside the housing 11.
  • the power source may be either an AC power source or a DC power source.
  • the AC power supply is provided separately from the cutting machine.
  • the DC power supply includes a battery pack that can be attached to and detached from the housing.
  • the power supply and the switching circuit are connected by an electric wire, and the controller detects the on / off of the trigger switch and controls the on / off of the switching circuit.
  • the processed material B1 is supported by a table.
  • the saw blade 13 In the process of moving the saw blade 13 between the guide mechanism 14 and the guide mechanism 15, the saw blade 13 is pressed against the work material B1 and cuts the work material B1 as shown in FIG.
  • the processed material B1 is urged in the operating direction of the saw blade 13 and pressed against the guide plate 27 as shown in FIG. Therefore, the guide plate 27 receives a reaction force.
  • the controller turns off the switch circuit. Then, the supply of electric power to the electric motor 12 is stopped, and the 12 output shafts of the electric motor are stopped.
  • the band saw 10 of the present embodiment has a removing mechanism 31 for removing chips adhering to the saw blade 13. Specific examples of the removal mechanism 31 are as follows.
  • the removal mechanism 31 has two duster plates 32 and 33 and a metal spring 34.
  • a boss portion 26 is provided inside the first saw case 16, and the two duster plates 32 and 33 are attached to the boss portion 26, respectively.
  • the two duster plates 32 and 33 are attached to the boss portion 26 by screws 35.
  • At least a part of the two duster plates 32 and 33 is arranged in the space A1.
  • the two duster plates 32 and 33 are arranged between the guide plate 27 and the guide mechanism 14 in the moving direction of the saw blade 13.
  • the two duster plates 32 and 33 are arranged at the same position in the moving direction of the saw blade 13.
  • the two duster plates 32 and 33 are arranged so as to sandwich the saw blade 13 in a direction intersecting the operating direction of the saw blade 13.
  • the two duster plates 32 and 33 can move in a direction intersecting the moving direction of the saw blade 13, specifically, in the thickness direction of the saw blade 13.
  • the spring 34 urges the two duster plates 32 and 33 so as to approach each other.
  • the two duster plates 32 and 33 are both made of metal, for example iron.
  • the duster plate 32 has an edge 36
  • the duster plate 33 has an edge 37.
  • the edge 36 and the edge 37 are parallel.
  • the edges 36 and 37 are pressed against the side surface 13A of the saw blade 13 by the force of the spring 34, respectively.
  • the side surfaces 13A are located on both sides of the saw blade 13 in the thickness direction, and the two side surfaces 13A are parallel to each other.
  • FIGS. 5 and 6 show the edges 36 and 37 separated from the side surface 13A for convenience.
  • the tooth tips of the saw blade 13 project in the thickness direction of the saw blade 13. Therefore, when the saw blade 13 operates, the tooth tips scrape the edge portions 36 and 37, and the edge portions 36 and 37 are pressed against the side surface 13A, respectively.
  • the two duster plates 32 and 33 scrape off chips from the side surface 13A of the saw blade 13 between the guide plate 27 and the guide mechanism 14. Therefore, it is possible to prevent chips from entering between the rollers 22 and 23 and the saw blade 13. Therefore, the amount of gap between the roller 22 and the roller 23 and the saw blade 13 can be appropriately maintained, and the operating state of the saw blade 13 is stabilized. Further, the support shafts 24 and 25 can be suppressed from being deformed, and the guide mechanism 14 can maintain the function of adjusting the posture of the saw blade 13. More specifically, it is possible to reduce the vibration of the saw blade 13 and suppress the damage of the saw blade 13. Further, it is possible to prevent at least one of the first saw wheel 19, the second saw wheel 20, and the guide mechanism 14 from being damaged or at least one mechanism from being deformed.
  • duster plates 32 and 33 are pressed against the side surface 13A of the saw blade 13 by the spring 34, respectively. Therefore, chips can be reliably removed from the saw blade 13.
  • the edges 36 and 37 are worn by the operation of the saw blade 13. Since the two duster plates 32 and 33 are pressed against the side surface 13A of the saw blade 13 by the spring 34, the distance L1 between the duster plate 32 and the duster plate 33 becomes narrow as shown in FIGS. 5 to 6. .. Therefore, it is possible to suppress a decrease in the force with which the two duster plates 32 and 33 are pressed toward the side surface 13A of the saw blade 13.
  • the distance L1 is the distance between the duster plate 32 and the duster plate 33 in the thickness direction of the saw blade 13.
  • FIGS. 7, 8 and 9 show Specific Example 2 of the removal mechanism 31.
  • the removal mechanism 31 has two duster plates 38, 39 and a metal spring 40.
  • the two duster plates 38 and 39 are attached to the boss portion 26, respectively.
  • the two duster plates 38 and 39 are attached to the boss portion 26 by screws 41.
  • the two duster plates 38 and 39 can operate within a plane of the saw blade 13 in the thickness direction and within a predetermined angle around the screw 41.
  • At least a part of the two duster plates 38 and 39 is arranged in the space A1.
  • the two duster plates 38 and 39 are arranged between the guide plate 27 and the guide mechanism 14 in the moving direction of the saw blade 13.
  • the two duster plates 38 and 39 are arranged at the same position in the moving direction of the saw blade 13.
  • the two duster plates 38 and 39 are arranged so as to sandwich the saw blade 13 in a direction intersecting the operating direction of the saw blade 13.
  • the duster plate 38 has pins 42 and the duster plate 39 has pins 43.
  • the spring 40 is pressed against the pins 42, 42.
  • the force of the spring 40 is applied to the duster plate 38 via the pin 42, and the duster plate 38 is urged counterclockwise in FIG.
  • the force of the spring 40 is applied to the duster plate 39 via the pin 43, and the duster plate 39 is urged clockwise in FIG.
  • the two duster plates 38 and 39 are both made of metal, for example iron.
  • the duster plate 38 has an edge 44 and the duster plate 39 has an edge 45.
  • the edge 44 and the edge 45 are parallel.
  • the edges 44 and 45 are pressed against the side surface 13A of the saw blade 13 by the force of the spring 40, respectively.
  • FIGS. 8 and 9 show the edges 44 and 45 separated from the side surface 13A for convenience.
  • the tooth tips of the saw blade 13 project in the thickness direction of the saw blade 13. Therefore, when the saw blade 13 operates, the tooth tips scrape the edge portions 44 and 45, and the edge portions 44 and 45 are pressed against the side surface 13A, respectively.
  • the two duster plates 38 and 39 scrape chips from the side surface 13A of the saw blade 13 between the guide plate 27 and the guide mechanism 14. Therefore, the specific example 2 of the removal mechanism 31 can obtain the same effect as the specific example 1 of the removal mechanism 31. Further, the two duster plates 38 and 39 are pressed by the spring 40 toward the side surface 13A of the saw blade 13. Therefore, it is possible to obtain the same effect as that of the specific example 1 of the removal mechanism 31.
  • the two duster plates 38 and 39 operate around the screw member 41 as shown in FIG. Therefore, it is possible to suppress a decrease in the force with which the two duster plates 38 and 39 are pressed toward the side surface 13A of the saw blade 13.
  • FIGS. 10, 11 and 12 show a specific example 3 of the removal mechanism 31.
  • the removal mechanism 31 has two duster plates 46 and 47.
  • the two duster plates 46 and 47 are both made of metal, for example iron.
  • the duster plates 46 and 47 are attached to the boss portion 26, respectively.
  • the duster plate 46 has a support portion 46A and a contact portion 50.
  • the contact portion 50 has a plate shape.
  • the contact portion 50 has an edge portion 50A.
  • the edge portion 50A is linear.
  • the duster plate 47 has a support portion 47A and a contact portion 51.
  • the contact portion 51 has a plate shape.
  • the contact portion 51 has an edge portion 51A.
  • the edge portion 51A is linear.
  • Shaft holes are provided in the support portions 46A and 47A, respectively.
  • a female screw hole is provided in the boss portion 26.
  • the duster plates 46 and 47 are attached to the boss portion 26 by screws 48, respectively.
  • the shaft portion of the screw 48 is arranged in the shaft hole and the female screw hole.
  • the head 49 of the screw 48 is pressed against the support portions 46A and 47A, respectively.
  • the two duster plates 46 and 47 are movable with respect to the boss portion 26 in the thickness direction of the saw blade 13.
  • the screw 48 is tightened to bring the head portion 49 closer to the boss portion 26, the edge portions 50A and 51A are pressed against the side surface 13A of the saw blade 13.
  • the force with which the edges 50A and 51A are pressed against the saw blade 13 is adjusted to a value at which the saw blade 13 can operate.
  • the contact portion 50 and the contact portion 51 are arranged at a distance L1.
  • FIGS. 11 and 13 show the edges 50A and 51A separated from the side surface 13A for convenience.
  • the tooth tips of the saw blade 13 project in the thickness direction of the saw blade 13. Therefore, when the saw blade 13 operates, the tooth tips scrape the edge portions 50A and 51A, and the edge portions 50A and 51A are pressed against the side surface 13A, respectively.
  • the two duster plates 46 and 47 are arranged at the same position in the moving direction of the saw blade 13.
  • the contact portions 50 and 51 are arranged in the space A1.
  • the contact portions 50 and 51 are arranged between the guide plate 27 and the guide mechanism 14 in the moving direction of the saw blade 13.
  • the two duster plates 46 and 47 are arranged so as to sandwich the saw blade 13 in a direction intersecting the operating direction of the saw blade 13.
  • the contact portions 50 and 51 scrape off chips from the side surface 13A of the saw blade 13 between the guide plate 27 and the guide mechanism 14. Further, the contact portions 50 and 51 come into contact with the side surface 13A of the saw blade 13 upstream of the guide mechanism 14 in the operating direction of the saw blade 13. Therefore, the specific example 3 of the removal mechanism 31 can obtain the same effect as the specific example 1 of the removal mechanism 31. Further, when the edge portions 50A and 51A are worn by the operation of the saw blade 13, the user tightens the screw 48 to bring the head portion 49 closer to the boss portion 26. Then, as shown in FIGS. 13 and 14, the distance L1 between the contact portion 50 and the contact portion 51 decreases. Therefore, it is possible to suppress a decrease in the force with which the edges 50A and 51A are pressed toward the side surface 13A of the saw blade 13.
  • the processed material B1 such as a metal pipe is an example of the processed material.
  • the annular, belt-shaped saw blade 13 is an example of a saw blade.
  • the first saw wheel 19, the second saw wheel 20, and the electric motor 12 are examples of drive mechanisms.
  • the housing 11 is an example of a housing.
  • the band saw 10 is an example of a cutting machine. Chips, dust, oil, etc. are examples of foreign substances.
  • the edges 36, 37, 44, 45, 50A, 51A are examples of contact portions.
  • the edge portion 36 is an example of the first contact portion, and the edge portion 37 is an example of the second contact portion.
  • the edge portion 44 is an example of the first contact portion, and the edge portion 45 is an example of the second contact portion.
  • the edge portion 50A is an example of the first contact portion, and the edge portion 51A is an example of the second contact portion.
  • the springs 34 and 40 are examples of the urging mechanism.
  • the first saw wheel 19 is an example of the first saw wheel.
  • the second saw wheel 20 is an example of the second saw wheel.
  • the side surface 13A is an example of the first side surface and the second side surface.
  • the guide mechanism 14 is an example of the guide mechanism.
  • the guide mechanism 15 is an example of the first guide unit.
  • the guide mechanism 14 is an example of the second guide unit.
  • the guide plate 27 is an example of a positioning mechanism.
  • the duster plate 32 is an example of the first constituent piece, and the duster plate 33 is an example of the second constituent piece.
  • the duster plate 38 is an example of the first constituent piece, and the duster plate 39 is an example of the second constituent piece.
  • the duster plate 46 is an example of the first constituent piece, and the duster plate 47 is an example of the second constituent piece.
  • the first saw case 16 is an example of the first cover
  • the second saw case 17 is an example of the second cover.
  • the cutting machine of the embodiment is not limited to the cutting machine disclosed by the drawings, and at least a part of the cutting machine can be variously changed without departing from the gist of the embodiment.
  • the removal mechanism includes one capable of removing foreign matter from at least one of the two sides of the saw blade.
  • the cutting machine includes a cutting machine in which at least a part of the drive mechanism is housed inside a housing.
  • the drive mechanism includes a motor, gears, pulleys and the like.
  • the metal spring used as the urging mechanism may be any of a coil spring, a leaf spring, a torsion spring and the like.
  • the cutting machine of the embodiment includes a cutting machine in which a removing mechanism and a guide mechanism are provided outside the housing, and a cutting machine in which the removing mechanism and the guide mechanism are provided inside the housing.
  • the removal mechanism in the embodiment can preferably remove foreign matter by contacting the saw blade upstream of the guide mechanism in the operating direction of the saw blade and pressing against the saw blade to remove foreign matter. This is an example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
PCT/JP2020/021326 2019-06-12 2020-05-29 切断機 WO2020250714A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021525995A JP7306457B2 (ja) 2019-06-12 2020-05-29 切断機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019109644 2019-06-12
JP2019-109644 2019-06-12

Publications (1)

Publication Number Publication Date
WO2020250714A1 true WO2020250714A1 (ja) 2020-12-17

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ID=73782006

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/021326 WO2020250714A1 (ja) 2019-06-12 2020-05-29 切断機

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JP (1) JP7306457B2 (enrdf_load_stackoverflow)
WO (1) WO2020250714A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117020308B (zh) * 2023-08-30 2024-04-05 浙江亨司迈智能机械有限公司 一种双头双向立式带锯床

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS378388Y1 (enrdf_load_stackoverflow) * 1960-01-13 1962-04-25
JPS54170488U (enrdf_load_stackoverflow) * 1978-05-23 1979-12-01
JPS63186597U (enrdf_load_stackoverflow) * 1987-05-21 1988-11-30
JP2011516285A (ja) * 2008-04-08 2011-05-26 エステラー ヴェーデー ゲーエムベーハー 帯鋸盤
US20110296696A1 (en) * 2010-06-03 2011-12-08 Jeffrey Holly Workpiece guard and blade guard for band saw
JP2015208830A (ja) * 2014-04-30 2015-11-24 日立工機株式会社 帯鋸盤

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS378388Y1 (enrdf_load_stackoverflow) * 1960-01-13 1962-04-25
JPS54170488U (enrdf_load_stackoverflow) * 1978-05-23 1979-12-01
JPS63186597U (enrdf_load_stackoverflow) * 1987-05-21 1988-11-30
JP2011516285A (ja) * 2008-04-08 2011-05-26 エステラー ヴェーデー ゲーエムベーハー 帯鋸盤
US20110296696A1 (en) * 2010-06-03 2011-12-08 Jeffrey Holly Workpiece guard and blade guard for band saw
JP2015208830A (ja) * 2014-04-30 2015-11-24 日立工機株式会社 帯鋸盤

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JP7306457B2 (ja) 2023-07-11
JPWO2020250714A1 (enrdf_load_stackoverflow) 2020-12-17

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