EP0614727B1 - Automatic belt-inserter device - Google Patents

Automatic belt-inserter device Download PDF

Info

Publication number
EP0614727B1
EP0614727B1 EP93110253A EP93110253A EP0614727B1 EP 0614727 B1 EP0614727 B1 EP 0614727B1 EP 93110253 A EP93110253 A EP 93110253A EP 93110253 A EP93110253 A EP 93110253A EP 0614727 B1 EP0614727 B1 EP 0614727B1
Authority
EP
European Patent Office
Prior art keywords
belt
inserting device
moving element
attached
automatic belt
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
EP93110253A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0614727A1 (en
Inventor
Eligio Bau'
Luciano Costa
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.)
Costa Levigatrici SpA
Original Assignee
Costa Levigatrici SpA
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 Costa Levigatrici SpA filed Critical Costa Levigatrici SpA
Publication of EP0614727A1 publication Critical patent/EP0614727A1/en
Application granted granted Critical
Publication of EP0614727B1 publication Critical patent/EP0614727B1/en
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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories

Definitions

  • the granulometry and the type of abrasive material depend on the working operation to be performed, therefore, the sand belts are replaced both depending on the type of product to be smoothed and on the degree of finish which needs to be obtained on such product.
  • each sand belt is pushed against the piece to be smoothed through a lamellar belt interposed between the cylinder around which the sand belt is wound and the back of the sand belt itself.
  • the present invention realises an automatic belt-inserting device, whose main purpose is to expedite the replacement operation of the belts on honing machines wherein the top winding cylinders of the belts are arranged at such a height that can not be reached by the operator standing on the ground.
  • Another purpose is for the automatic belt-inserting device of the invention to permit the insertion of the belts without forcing the operator to use any up rised platforms such as stools, ladders or others.
  • the last but not least purpose is that the automatic belts-inserting device of the invention can be used on any kind of honing machine available on the market.
  • the automatic belt-inserting device of the invention not only expedites the replacement operation of the belts, but it also permits to perform more safely the replacement of the belts themselves.
  • the automatic belt-inserting device As can be observed in Fig. 1, the automatic belt-inserting device according to the invention, indicated as a whole with 1, comprises a leading casing, indicated with 2, hinged through a pin 3 to a moving element 4 sliding along a driving unit, indicated as a whole with 5, connected to a supporting structure 6, that, in the described case, consists of the structure of the honing machine, indicated as a whole with 7.
  • the driving unit 5 consists of a pair of vertical uprights 61, each of them presenting their bottom ends attached to the supporting structure 6, through a connecting plate 8, anchored to the supporting structure itself by means of fixing elements, such as screws, and each of the top ends attached directly to the supporting structure 6 itself, as can be observed in particular in the Figs. 3 and 4.
  • leading casing 2 With regard to the leading casing 2, it will be observed that it consists essentially of an external surface 21, having a convex profile, which can rotate around a pin 3 hinged to the moving element 4, belonging to the driving unit 5, through rotating means.
  • said rotating means consist of a pneumatic cylinder 22 presenting the end 24 of its body 23 hinged to the moving element 4, and the end 25 of its stem 26 hinged to the external surface 21 of the leading casing 2.
  • the moving element 4 is attached, through a connecting element 41, to the sliding element of the displacement means, which, in the described case, consists of the piston of a cylinder 42 without stem which presents its body 43 attached to the supporting structure 6, consisting of the frame of the honing machine, and the piston which slides axially in the interior of said body 43 (not represented in the Fig.), and is connected to the connecting element 41.
  • the sliding element of the displacement means which, in the described case, consists of the piston of a cylinder 42 without stem which presents its body 43 attached to the supporting structure 6, consisting of the frame of the honing machine, and the piston which slides axially in the interior of said body 43 (not represented in the Fig.), and is connected to the connecting element 41.
  • the rotation occurs by acting on the rotating cylinder 22 through a push-button or other mechanism of control belonging to the pneumatic feeding circuit of the cylinder itself, and attached to the supporting structure 6, which is not represented in the Fig. for the purpose of simplifying the description.
  • the displacement cylinder 42 When the leading casing 2 is arranged in its horizontal position, the displacement cylinder 42, visible in Fig. 8,is activated through another control push-button, and it lowers the moving element 4 vertically toward the bottom by causing it to slide along the driving rods 61, so as to bring it into the most suitable position for receiving the sand belt 72, as can be observed in the Figs. 3 and 4, whenever the belt itself is pushed by an operator following direction 73.
  • the sand belt 72 can be inserted into the leading casing 2 manually by the operator performing the insertion.
  • a pneumatic sensor 28 connected with the feeding circuit of the rotating and displacement cylinders 22 and 42 respectively, as well as with the control push-buttons, such a sensor automatically controlling the displacement cylinder 42, when sensing the presence of belt 72, so that the moving element 4, the leading casing 2 and the sand belt 72 inserted into on it, are driven vertically toward the top, following the direction represented in Fig. 4 and indicated by arrow 45.
  • the sand belt 72 is placed in front of the top rotating cylinder 71 and it can be easily make to slide on the external surface of the top rotating cylinder 71 itself by the operator exerting another pressing action on the side of the sand belt 72 itself, following the direction of arrow 73.
  • the driving unit 105 is attached to the end 35 of the stem 36 of a pneumatic cylinder 32, whose body 33 is connected in correspondence with the end 34, to the supporting structure 106, consisting, in this case too, of the framework of the honing machine 107.
  • the driving unit 105 in order to remove or to insert the sand belts, the driving unit 105 has to be brought into its utmost upright position, as represented in Fig. 9, so that the leading case 102 is lined up with the top rotating cylinder 171 of the honing machine 107, whereas, in order to remove or to insert the lamellar belt 201, the driving unit 105 has to be displaced toward the bottom, as observed in Fig. 10, so that the same leading casing 102 is lined up with the intermediate rotating cylinder 202 supporting the lamellar belt 201 itself.
  • the automatic belt-inserting device reaches, first of all, the main purpose of expediting the replacement operation of the belts on honing machines, wherein the top winding cylinders of the belts are arranged at such a height that is not reachable directly by the operator standing on the ground.
  • the described different embodiment reaches the mentioned purposes too, with the additional advantage of permitting the replacement of the lamellar belts too, in case the honing machine is provided with them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Replacement Of Web Rolls (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP93110253A 1993-02-11 1993-06-28 Automatic belt-inserter device Expired - Lifetime EP0614727B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI930019 1993-02-11
IT93VI000019A ITVI930019A1 (it) 1993-02-11 1993-02-11 Infilanastri automatico

Publications (2)

Publication Number Publication Date
EP0614727A1 EP0614727A1 (en) 1994-09-14
EP0614727B1 true EP0614727B1 (en) 1996-05-22

Family

ID=11425106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93110253A Expired - Lifetime EP0614727B1 (en) 1993-02-11 1993-06-28 Automatic belt-inserter device

Country Status (4)

Country Link
EP (1) EP0614727B1 (it)
AT (1) ATE138305T1 (it)
DE (1) DE69302802T2 (it)
IT (1) ITVI930019A1 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1274825B (it) * 1994-07-08 1997-07-25 Dmc Spa Dispositivo ad introduzione facilitata del nastro abrasivo in macchinelevigatrici, in particolare per pannelli in legno.
JP4902852B2 (ja) * 2006-08-15 2012-03-21 株式会社 東洋鐡工所 研磨ベルト装着装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224957A (ja) * 1985-07-23 1987-02-02 Takegawa Tekko Kk ベルトサンダ−機のベルト掛け装置
JPS62156005A (ja) * 1985-12-27 1987-07-11 Ishikawajima Harima Heavy Ind Co Ltd 研削ベルト用カ−トリツジ及びロ−ル研削装置
DE3904704C1 (en) * 1989-02-16 1990-04-26 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Device for the mechanised, independent fitting of a new endless grinding belt onto a freely movable belt-grinding machine

Also Published As

Publication number Publication date
ITVI930019A1 (it) 1994-08-11
DE69302802D1 (de) 1996-06-27
EP0614727A1 (en) 1994-09-14
ITVI930019A0 (it) 1993-02-11
ATE138305T1 (de) 1996-06-15
DE69302802T2 (de) 1997-01-23

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