EP0399155B1 - Bandschleifmaschine - Google Patents

Bandschleifmaschine Download PDF

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Publication number
EP0399155B1
EP0399155B1 EP19900104263 EP90104263A EP0399155B1 EP 0399155 B1 EP0399155 B1 EP 0399155B1 EP 19900104263 EP19900104263 EP 19900104263 EP 90104263 A EP90104263 A EP 90104263A EP 0399155 B1 EP0399155 B1 EP 0399155B1
Authority
EP
European Patent Office
Prior art keywords
belt
grinding
collecting chamber
grinding machine
machine according
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP19900104263
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0399155A1 (de
Inventor
Manfred Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAUGERAETE-UNION GMBH & CO., MASCHINENHANDELS KG
SUEDHARZER MASCHINENBAU GMBH
Original Assignee
Baugerate-Union & Co Maschinenhandels KG GmbH
Suedharzer Maschinenbau GmbH
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 Baugerate-Union & Co Maschinenhandels KG GmbH, Suedharzer Maschinenbau GmbH filed Critical Baugerate-Union & Co Maschinenhandels KG GmbH
Publication of EP0399155A1 publication Critical patent/EP0399155A1/de
Application granted granted Critical
Publication of EP0399155B1 publication Critical patent/EP0399155B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/08—Dust extraction equipment on grinding or polishing machines specially designed for belt grinding machines

Definitions

  • a collection chamber open to the sanding belt is provided below the access opening.
  • a large part of the grinding dust is whirled out of the collecting chamber again by the air flow occurring, so that it flies around in the capsule housing.
  • the whirled up grinding dust tends to attach itself to the roller bearings and the rollers inside. This can lead to considerable grinding dust accumulation on the rollers and unbalance, which can result in bearing damage.
  • a suction fan can be connected to the capsule housing. The effect of the suction is limited, however, because the grinding dust is still fixed inside the capsule housing and on the rollers.
  • the grinding dust is sucked off through a suction channel and separated and collected in a downstream separator.
  • the working area of the grinding machine is on the lower roller.
  • An air supply duct sucking above the upper roller runs along a vertical run of the grinding belt up to the vicinity of the suction opening of the suction duct next to the lower roller.
  • the suction channel runs on the side of the grinding belt facing away from the air supply channel.
  • the suction opening is approximately horizontal Cross slot.
  • a convexly curved pressure shoe is provided along the dust path to the suction opening. The grinding dust is sucked up against the effect of gravity and transported away.
  • a belt grinder known from CH-536 694 B with rollers driving a horizontal, upright belt loop
  • the rollers with the belt loop are exposed above a work table.
  • the grinding dust is sucked off by means of a suction mouthpiece that can be moved to the work area and conveyed through a vertical suction line to a collecting chamber in the form of a dust bag.
  • the dust bag is located at a distance below the work table.
  • the suction mouthpiece used in each case has its suction opening on the side next to the grinding belt.
  • the suction fan and a strong suction flow in the suction opening are functionally necessary because the sanding dust does not reach the respective collector solely due to the air flow and the centrifugal force during operation or does not enter the suction channel to a sufficient extent.
  • the invention has for its object to improve a belt grinder of the type mentioned in such a way that malfunctions due to the grinding dust are avoided.
  • the air flow occurring during operation together with the centrifugal force acting on the grinding dust particles, conveys the grinding dust directly into the collecting chamber in which it is collected.
  • the inlet opening nestled on the roll contributes to the fact that it is hardly possible for the grinding dust to take a route other than into the collecting chamber.
  • the top wall of the collecting chamber prevents those who have already reached the collecting chamber Grinding dust from getting past the lower run of the sanding belt loop to the rollers and settling there and in the capsule housing.
  • the air flow occurring along the lower run of the grinding belt cannot become effective within the collecting chamber, because the top wall of the collecting chamber serves as a shield, which also prevents the grinding dust from whirling out as soon as it has entered the collecting chamber.
  • the elongated shaft has a large holding capacity and only requires a small construction height.
  • the shaft designed as a nozzle channel supports the effective removal of the grinding dust into the settling chamber, in which the grinding dust calms down and is collected.
  • At least the edge of the inlet opening into the collecting chamber adjacent to the roller is expediently designed in a cutting-like manner, so that a largely laminar flow occurs in the collecting chamber without any flow obstacle. It also makes the gap to the sanding belt as small as possible so that sanding dust can only pass through to a negligible extent.
  • the measure of claim 2 favors the transport of the grinding dust to the settling chamber and contributes to the fact that only a little grinding dust settles in the front part of the collecting chamber.
  • the grinding dust is reliably forced into the collecting chamber partly by the air flow and partly by the centrifugal force. A suction is created that also pulls dust dust clouds in the work area into the collection chamber.
  • the grinding dust has no possibility to fly away to the outside even in the area of the grinding block.
  • the harmonious curvature of the front part of the floor Collection chamber promotes good flow guidance for the grinding dust. This area in front therefore does not grow easily.
  • the ears prevent the grinding dust from flowing sideways past the inlet opening.
  • a safe inlet opening is created, into which the grinding dust is virtually sucked in.
  • a full collection chamber can be easily emptied without the contents being spilled.
  • the bracket allows easy pulling out, either to the front or to the rear or to the side.
  • the front part of the collecting chamber floor can expediently be folded down, not only making it easier to pull out the collecting chamber to the rear, but also corrective access from the front into the collecting chamber when the inlet opening is moved.
  • the sanding dust can be emptied more easily with the bottom part of the floor folded down.
  • the removal of even the finest dust particles is promoted by the suction fan.
  • a belt grinder 1 contains a roller 2 which is fastened on a drive shaft 4 with a wedge 5 and which is connected to a drive 3 indicated by a broken line.
  • a second roller 6 is mounted parallel to the roller 2 at a distance on an axis 7.
  • the rollers 2, 6 are wrapped in a loop 8 of an abrasive belt so that the two strands 8a, 8b run approximately horizontally.
  • a tensioning device (not shown) for the loop 8 can be provided between the two rollers 2, 6. It is also conceivable to apply the roller 6 or the roller 2 by means of a tensioning device, so that the loop is always tensioned.
  • Each roller 2, 6 has a hub part 2a, 6a, which is mounted on the shaft 4 or the axis 7, and a running ring 2b or 6b, on which the grinding belt loop 8 rests.
  • the hub part is connected to the tread by a web or spokes.
  • the two rollers 2, 6 are accommodated in a capsule housing 9, consisting of an upper part 9a and a lower part 9b, in accordance with the safety regulations.
  • the capsule housing 9 has an access opening 29 in the working area, in front of which a grinding block 30 is expediently attached.
  • the parting line of the capsule housing 9 is indicated by 10.
  • a collecting chamber 11 is attached, which is designed as an elongated shaft.
  • the collecting chamber 11 is suspended with a rear, hook-shaped holding part 12 on a holding part 13 of the lower part 9b.
  • the collecting chamber 11 hangs on a hook-shaped holding part 14 of the grinding block 30 by means of an opening 15.
  • the collecting chamber 11 forms a kind of nozzle channel 16, which extends from an inlet opening 17 which clings to the circumference of the roller 6 to a separating chamber 21 in the rear end.
  • a suction fan 22 is optionally connected there.
  • the inlet opening 17 follows the contour of the roller 6 and begins at the lower edge of the grinding block 30. Its lower edge is designated by 24.
  • the edge 24 is expediently designed like a knife.
  • an ear 18 from a shaft side wall could be present in the area of the inlet opening 17 (as indicated at 17 ') on each side of the roller 6.
  • the collecting chamber 11 also has a bottom wall 25 which has a front part 23 which can be folded down by means of a hinge 19 and which extends in an arc shape, gradually approaching the circumference of the roller 6.
  • a guide roller 20 is indicated, which supports the pulling out of the collecting chamber 11 for emptying or for maintenance work. If the guide roller 20 is not provided, the collecting chamber 11 can be detached from the hook-like holding element 14 by pushing forward and then pulled away to the rear or folded down. It is also conceivable to mount the collecting chamber 11 firmly and to attach the separating chamber 21 to the collecting chamber 11 in a detachable manner. It would also be conceivable to pull the collection chamber away in the forward direction, so that no front part 23 which can be folded down is then required.
  • the top wall 26 of the collecting chamber 11 is in the immediate vicinity of the lower run 8b of the grinding belt loop 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP19900104263 1989-05-26 1990-03-06 Bandschleifmaschine Expired - Lifetime EP0399155B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8906512U 1989-05-26
DE8906512U DE8906512U1 (de) 1989-05-26 1989-05-26 Bandschleifmaschine

Publications (2)

Publication Number Publication Date
EP0399155A1 EP0399155A1 (de) 1990-11-28
EP0399155B1 true EP0399155B1 (de) 1993-10-06

Family

ID=6839588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900104263 Expired - Lifetime EP0399155B1 (de) 1989-05-26 1990-03-06 Bandschleifmaschine

Country Status (3)

Country Link
EP (1) EP0399155B1 (da)
DE (2) DE8906512U1 (da)
DK (1) DK0399155T3 (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225522B (en) * 1988-07-01 1992-09-30 Alexander Stephen Anderson Surface abrasive treatment of small objects
CN106217191B (zh) * 2016-08-12 2018-08-21 卓达新材料科技集团威海股份有限公司 一种打磨样块工装
WO2019104615A1 (zh) * 2017-11-30 2019-06-06 陈金泉 一种静电除尘砂轮机
CN108544343A (zh) * 2018-05-29 2018-09-18 江苏盖之宝包装科技有限公司 带有封闭罩壳的磨床及吸尘装置
CN114851035A (zh) * 2022-04-25 2022-08-05 大连橡胶塑料机械有限公司 一种密炼机转子自动抛光数控集成设备及加工方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH536694A (de) * 1971-04-16 1973-05-15 Herzog Ernst Staubabsaugvorrichtung an einer Bandschleifmaschine
US3872627A (en) * 1974-02-07 1975-03-25 Timesavers Inc Wide belt sanding machine with improved dust collector

Also Published As

Publication number Publication date
EP0399155A1 (de) 1990-11-28
DK0399155T3 (da) 1993-11-15
DE8906512U1 (de) 1989-07-27
DE59002971D1 (de) 1993-11-11

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