EP0614727A1 - Automatic belt-inserter device - Google Patents
Automatic belt-inserter device Download PDFInfo
- Publication number
- EP0614727A1 EP0614727A1 EP93110253A EP93110253A EP0614727A1 EP 0614727 A1 EP0614727 A1 EP 0614727A1 EP 93110253 A EP93110253 A EP 93110253A EP 93110253 A EP93110253 A EP 93110253A EP 0614727 A1 EP0614727 A1 EP 0614727A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inserting device
- belt
- moving element
- supporting structure
- 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.)
- Granted
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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 invention concerns an automatic belt-inserting device for the insertion of sand or lamellar belts between the rotating cylinders of a honing machine.
- 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 realizes 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.
- an automatic belt-inserting device for honing machines which, in accordance with the main claim, comprises a leading casing with an external convex surface, for the sliding insertion of the belts between the rotating cylinders of a honing machine, and is characterized in that it presents a moving element, to which said leading case is hinged, sliding along a driving unit attached to a supporting structure, said belt-inserting device being provided with displacement means of the moving element along said driving units and with means belonging to said leading case and rotating around the hinge point to the moving element, said means being suited to bring the convex surface of said leading case parallel with the external surface of the cylinder of the honing machine into which the belt needs to be inserted.
- the supporting structure, to which the driving unit is attached is the structure of the honing machine.
- the driving unit slides vertically in relation to the structure of the honing machine to which is connected.
- the supporting structure to which the driving unit is attached is a supporting framework, movable on wheels.
- 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 without stem 42 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 without stem 42 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.
- a different embodiment of the automatic belt-inserting device according to the invention based on the same idea of solution and suitable to be used in particular on honing machines into which the sand belt is driven by a lamellar belt, is represented in the Figs. 9, 10 and 11 wherein is indicated with 101.
- Such a different embodiment is applied to a honing machine supplied with lamellar belts, represented in Fig. 9 and indicated as a whole with 107, where it can be observed that the lamellar belt 201 is supported by an intermediate rotating cylinder 202, arranged parallel and at a lower position in relation to the top rotating cylinder 171, around which the corresponding sand belt is wound, which is not represented in the Fig. in order to simplify the description.
- 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 rods 161 will present each, only their bottom end connected with the supporting structure 106 itself, again through the interposition of the connecting plate 108 attached to the supporting structure 106 itself, wherein the ends of said rods 161 are sliding, being coupled in the interior of the driving seats 181 obtained in the connecting plate 108 itself.
- the body of the cylinder without item 142, which causes the moving element 104 to move is connected with the bottom ends of said rods 161, therefore it moves integrally with them and with the whole driving unit 105, whenever the latter is vertically displaced by the pneumatic cylinder 32.
- 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.
- FIG. 12 Another different embodiment is represented in the Figs. 12 and 13, wherein it can be observed that the belt-inserting device according to the invention, indicated as a whole with 301, is attached to a supporting structure 306, which, in this case, consists of a trolley 40 movable by means of the wheels 41.
- the driving unit 305 consists of a pair of vertical rods 361, each of them attached, at their bottom end, to the supporting structure 306, through the interposition of a connecting plate 308.
- 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.
- the automatic belt-inserting device according to the invention can undergo constructive modifications, with the purpose of improving its performance or of making it more economical. All said possible variations must, however, be considered within the scope protected by the present invention.
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- 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)
Abstract
Description
- The invention concerns an automatic belt-inserting device for the insertion of sand or lamellar belts between the rotating cylinders of a honing machine.
- It is a known fact that the lapping operations on wooden materials, either rough or varnished, are performed by means of honing machines on which the material to be smoothed is placed over a conveyor belt which conveys it under of a plurality of sand belts, each of them being wrapped around rotating cylinders.
- 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.
- Moreover, sometimes, 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.
- It is a known fact to the operators of this field, that the replacement of the sand belts and of the lamellar belts is a rather long operation both because it is performed manually and because the operator is forced to work in a rather uncomfortable position, given the dimension of the belts and the position of the honing machine, where the rotating cylinders on which the belts are wound are mounted.
- Moreover, if one considers that the current trends of the market force the users of the honing machine, such as furniture-makers, to produce lots of limited quantity in a high number of colour variations and superficial finishes, it is easy to understand how the machine idle times for the replacement of the belts can become very long, thus having a considerable effect on the machine tooling time, and therefore on the total cycle time.
- In order to replace the belts, it is necessary to remove them from the cylinders, around which they are wound, then to insert in their place other belts having proper characteristics for the product to be obtained.
- In such a replacement operation what happens to be particularly difficult is to fit each belt on the corresponding top winding cylinder.
- It is with the purpose of facilitating the replacement operations of the belts and in particular the fitting operation of each belt on the corresponding top cylinder, that the patent for industrial invention which makes the object of the Italian patent application No. VI92A000082, in the name of the same inventor, has been realized, which describes a leading casing for inserting the belts between the cylinders of a honing machine, the purpose of which is to make the belt replacement operation easier and faster.
- The advantages of using the leading casing, object of the mentioned invention, are partially limited when said casings are applied to honing machines wherein the top winding cylinder of the belts is arranged at such a height which cannot be reached by an operator of average height working standing up.
- In these cases the operator is forced to use an up rised platform on which he can stand in order to reach the height necessary for fitting the belt on the cylinder.
- The replacement operation of the belts, therefore, besides requiring a higher performance time as compared to the time necessary should the operator be able to work standing on firm ground, becomes also more hazardous considering the dimensions of the belts that the operator has to handle in this up rised position in relation to the floor.
- It is with the purpose of overcoming such inconveniences that the present invention realizes 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 described purposes are reached by an automatic belt-inserting device for honing machines, which, in accordance with the main claim, comprises a leading casing with an external convex surface, for the sliding insertion of the belts between the rotating cylinders of a honing machine, and is characterized in that it presents a moving element, to which said leading case is hinged, sliding along a driving unit attached to a supporting structure, said belt-inserting device being provided with displacement means of the moving element along said driving units and with means belonging to said leading case and rotating around the hinge point to the moving element, said means being suited to bring the convex surface of said leading case parallel with the external surface of the cylinder of the honing machine into which the belt needs to be inserted.
- According to a preferred embodiment, the supporting structure, to which the driving unit is attached, is the structure of the honing machine.
- According to a different embodiment, the driving unit slides vertically in relation to the structure of the honing machine to which is connected.
- According to another different embodiment, the supporting structure to which the driving unit is attached, is a supporting
framework, movable on wheels. - Advantageously, 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.
- Further scope of applicability of the present invention will become apparent from the detailed description given hereinfater. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description and from the drawings, wherein:
- Fig. 1 shows the automatic belt-inserting device according to the invention in its rest position;
- Fig. 2 shows the automatic belt-inserting device of Fig.1 with the leading casing arranged in its horizontal position, lined up with the top rotating cylinder around which the belt needs to be wound;
- Fig. 3 shows the automatic belt-inserting device of Fig. 2 with the leading casing in its lowered position for receiving the belt;
- Fig.4 shows the automatic belt-inserting device of Fig. 3 during the inserting operation of the belt into the leading casing;
- Fig. 5 shows the automatic belt-inserting device of Fig. 4 during the inserting operation of the belts between the rotating cylinders of the honing machine;
- Fig. 6 shows the automatic belt-inserting device of Fig. 5 at the end of the inserting operation of the belt between the cylinders of the honing machine;
- Fig. 7 shows the automatic belt-inserting device of Fig. 6 with the leading casing placed again in its rest position;
- Fig. 8 shows the front view of the automatic belt-inserting device represented in Fig. 7;
- Fig. 9 shows a different embodiment of the belt-inserting device according to the invention;
- Fig. 10 shows the different embodiment of the belt-inserting device of Fig. 9 in a different position;
- Fig. 11 shows the front view of the different embodiment of Fig. 9;
- Fig. 12 shows yet another different embodiment of the automatic belt-inserting device according to the invention;
- Fig. 13 shows the different embodiment represented in Fig. 12 arranged in a different position.
- 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 movingelement 4 sliding along a driving unit, indicated as a whole with 5, connected to a supportingstructure 6, that, in the described case, consists of the structure of the honing machine, indicated as a whole with 7. - It will be observed in particular in Fig. 8, that the
driving unit 5 consists of a pair ofvertical uprights 61, each of them presenting their bottom ends attached to the supportingstructure 6, through a connectingplate 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 supportingstructure 6 itself, as can be observed in particular in the Figs. 3 and 4. - With regard to the leading
casing 2, it will be observed that it consists essentially of anexternal surface 21, having a convex profile, which can rotate around apin 3 hinged to the movingelement 4, belonging to thedriving unit 5, through rotating means. - In the case of the described embodiment, said rotating means consist of a
pneumatic cylinder 22 presenting theend 24 of itsbody 23 hinged to the movingelement 4, and theend 25 of itsstem 26 hinged to theexternal surface 21 of the leadingcasing 2. - Finally, it can be observed in Fig. 8, that the
moving element 4, is attached, through a connectingelement 41, to the sliding element of the displacement means, which, in the described case, consists of the piston of a cylinder withoutstem 42 which presents itsbody 43 attached to the supportingstructure 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 theconnecting element 41. - It can be easily understood, therefore, how through the
pneumatic cylinder 22, the leadingcasing 2 can rotate around thehinge pin 3, following any of the two directions ofarrow 27, while the movingelement 4, and consequently the leadingcasing 2 and the rotatingcylinder 22 both connected with it, through thedisplacement cylinder 42, can vertically translate following any of the two directions ofarrow 44, as represented in Fig. 3. - Whenever the belt-inserting device according to the invention is in its rest position, its leading
casing 2 is arranged vertically, as represented in Fig. 1, in its highest up rised position and lined up with thetop cylinder 71 of thehoning machine 7. - In order to insert a belt on to the
top cylinder 71 or to remove from the latter a belt supported by the same, it is necessary, first of all, to cause the leadingcase 2 to rotate, so that it will be brought, as represented in Fig. 2, into an essentially horizontal position. - 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 supportingstructure 6, which is not represented in the Fig. for the purpose of simplifying the description. - When the leading
casing 2 is arranged in its horizontal position, thedisplacement cylinder 42, visible in Fig. 8,is activated through another control push-button, and it lowers the movingelement 4 vertically toward the bottom by causing it to slide along thedriving rods 61, so as to bring it into the most suitable position for receiving thesand belt 72, as can be observed in the Figs. 3 and 4, whenever the belt itself is pushed by anoperator following direction 73. - The
sand belt 72 can be inserted into the leadingcasing 2 manually by the operator performing the insertion. - It can be observed that on the
external surface 21 of the leadingcasing 2 is arranged apneumatic sensor 28 connected with the feeding circuit of the rotating anddisplacement cylinders displacement cylinder 42, when sensing the presence ofbelt 72, so that the movingelement 4, the leadingcasing 2 and thesand belt 72 inserted into on it, are driven vertically toward the top, following the direction represented in Fig. 4 and indicated byarrow 45. - When the moving
element 4 has reached the upper end stroke, as represented in Fig. 5, thesand belt 72 is placed in front of the top rotatingcylinder 71 and it can be easily make to slide on the external surface of the top rotatingcylinder 71 itself by the operator exerting another pressing action on the side of thesand belt 72 itself, following the direction ofarrow 73. - When the
sand belt 72 is placed on the top rotatingcylinder 71, as it can be observed in Fig. 6, by acting again on the pneumatic cylinder through the push-button, the leadingcasing 2 is made to rotate following the direction ofarrow 29, so that it will be brought as observed in Fig. 7, in the same configuration as represented in Fig. 1, that is to say back to its rest position. - It is easy to understand how the same operations are carried out whenever it is necessary to remove the
belt 71 in order to proceed to its replacement. - A different embodiment of the automatic belt-inserting device according to the invention, based on the same idea of solution and suitable to be used in particular on honing machines into which the sand belt is driven by a lamellar belt, is represented in the Figs. 9, 10 and 11 wherein is indicated with 101.
- Such a different embodiment is applied to a honing machine supplied with lamellar belts, represented in Fig. 9 and indicated as a whole with 107, where it can be observed that the
lamellar belt 201 is supported by an intermediate rotatingcylinder 202, arranged parallel and at a lower position in relation to the top rotatingcylinder 171, around which the corresponding sand belt is wound, which is not represented in the Fig. in order to simplify the description. - In that case, it can be understood, that, when there is the need of replacing the
lamellar belt 201, it is necessary to displace thewhole driving unit 105 toward the bottom, followingdirection 144, so as to prevent the vertical slidingrods 161 from interfering with the profile of thebelt 201 itself, whenever there is a need of removing it. - For this purpose, the
driving unit 105 is attached to theend 35 of thestem 36 of apneumatic cylinder 32, whosebody 33 is connected in correspondence with theend 34, to the supportingstructure 106, consisting, in this case too, of the framework of thehoning machine 107. - In that case, the
driving rods 161 will present each, only their bottom end connected with the supportingstructure 106 itself, again through the interposition of the connectingplate 108 attached to the supportingstructure 106 itself, wherein the ends of saidrods 161 are sliding, being coupled in the interior of the drivingseats 181 obtained in theconnecting plate 108 itself. - Moreover, in such a different embodiment, the body of the cylinder without
item 142, which causes the movingelement 104 to move, is connected with the bottom ends of saidrods 161, therefore it moves integrally with them and with thewhole driving unit 105, whenever the latter is vertically displaced by thepneumatic cylinder 32. - Therefore, it is easy to understand, that the described different embodiment permits the removal and the insertion of both the sand belts and the lamellar belts.
- In fact, 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 leadingcase 102 is lined up with the top rotatingcylinder 171 of thehoning machine 107, whereas, in order to remove or to insert thelamellar belt 201, thedriving unit 105 has to be displaced toward the bottom, as observed in Fig. 10, so that the same leadingcasing 102 is lined up with the intermediate rotatingcylinder 202 supporting thelamellar belt 201 itself. - Another different embodiment is represented in the Figs. 12 and 13, wherein it can be observed that the belt-inserting device according to the invention, indicated as a whole with 301, is attached to a supporting
structure 306, which, in this case, consists of atrolley 40 movable by means of thewheels 41. - In this case too, the
driving unit 305 consists of a pair ofvertical rods 361, each of them attached, at their bottom end, to the supportingstructure 306, through the interposition of a connectingplate 308. - Such a different solution, permits to arrange, as observed in Fig. 13, any
belt 372 placed into the leadingcasing 302, in any vertical position, thus allowing the insertion of thebelt 372, which can indifferently be a sand belt or a lamellar belt, on the corresponding rotating cylinder by only adjusting the height which the movingelement 304 supporting the leadingcasing 302, can reach. - On the basis of what has been described, it can be understood how the automatic belt-inserting device according to the invention, 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.
- In this way the operator is no longer forced to use up rised platforms such as stools, ladders or others, and consequently the replacement operation of the belts is carried out faster and under improved safety conditions.
- 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.
- The same advantages and purposes can be reached through yet another different embodiment of the automatic belt-inserting device according to the invention, which foresees the setting-up on a supporting structure consisting of a framework movable on wheels and dependent from the honing machine, rather than a supporting structure consisting of the framework of the honing machine.
- During the manufacturing process, the automatic belt-inserting device according to the invention can undergo constructive modifications, with the purpose of improving its performance or of making it more economical. All said possible variations must, however, be considered within the scope protected by the present invention.
Claims (11)
- An automatic belt-inserting device for honing machines, comprising a leading casing (2; 102; 302), with an external convex surface (21) for the sliding insertion of the belts (72; 201; 372) between the rotating cylinders (71; 171; 202) of a honing machine (7; 107), characterized in that it presents a moving element (4; 104; 304), to which said leading case (2; 102; 302) is hinged, sliding along a driving unit (5; 105; 305) attached to a supporting structure (6; 106; 306), said belt-inserting device being provided with displacement means (42) of the moving element (4; 104; 304) along said driving units (5; 105; 305) and with means (22) for the rotation of said leading case (2; 102; 302) around the hinging point (3) to the moving element, said means being suited to bring the convex surface (21) of said leading case (2; 102; 302) parallel with the external surface of the cylinder (71; 171; 202) of the honing machine around which the belt (72; 201; 372) needs to be wound.
- An automatic belt-inserting device according to claim 1, characterized in that the supporting structure of the driving unit (5; 105) is the frame (6; 106) of the honing machine (7; 107).
- An automatic belt-inserting device according to claim 1, characterized in that the supporting structure of the driving unit (305) is the frame (306) of a trolley (40) mounted on wheels (41).
- An automatic belt-inserting device according to any of the claims 1, 2 or 3, characterized in that the driving unit (5; 105; 305) consists of one or more driving rods (61; 161; 361) essentially vertical, with which the moving element (4; 104; 304) is connected, which slides longitudinally along them, said at least one rod having each at least one of its ends connected with the supporting structure (6; 106; 306) through a connecting plate (8; 108; 308) attached to the supporting structure itself.
- An automatic belt-inserting device according to claim 4, characterized in that each of said at least one driving rod (61) presents both ends connected with the supporting structure (6).
- An automatic belt-inserting device according to claim 4, characterized in that each of said at least one driving rod (161) presents one free end and its opposite end slidingly connected within the interior of driving seats (181) obtained within the connecting plate (108) attached to the supporting structure (106).
- An automatic belt-inserting device according to claim 2, characterized in that the driving unit (105) is attached to the end of the moving element of an actuator (32) the fixed part of which is attached to the supporting structure (106).
- An automatic belt-inserting device according to claim 7, characterized in that the actuator consists of a pneumatic cylinder (32).
- An automatic belt-inserting device according to either claim 1 or 3, characterized in that the means for the vertical displacement of the moving element (4; 304) are a pneumatic cylinder without stem (42) presenting its body (43) attached to the supporting structure (6; 306) and its piston attached to the moving element (4) through a connecting element (41).
- An automatic belt-inserting device according to claim 2, characterized in that the means for the vertical displacement of the moving element (104) consist of a pneumatic cylinder without stem (142) presenting its body attached to the bottom end of the rods (161) and its piston attached to the moving element (104) through a connecting element (141).
- An automatic belt-inserting device according to any of the claims 1, 2 or 3, characterized in that the means causing the leading casing (2; 102; 302) to rotate around the hinge point (3) are a pneumatic cylinder (22) presenting the end (24) of its body (23) hinged to the moving element (4; 104; 304) and the end (25) of its stem (26) hinged to the external surface (21) of the leading casing (2; 102; 302) itself.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVI930019 | 1993-02-11 | ||
IT93VI000019A ITVI930019A1 (en) | 1993-02-11 | 1993-02-11 | AUTOMATIC TAPPING MACHINE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0614727A1 true EP0614727A1 (en) | 1994-09-14 |
EP0614727B1 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 (en) |
AT (1) | ATE138305T1 (en) |
DE (1) | DE69302802T2 (en) |
IT (1) | ITVI930019A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0691179A3 (en) * | 1994-07-08 | 1996-04-10 | Scm Group Autec Division Spa | Device to facilitate the fitting of abrasive belts to sanding machines,especially for wooden panels |
JP2008044067A (en) * | 2006-08-15 | 2008-02-28 | Toyo Tekkosho:Kk | Abrasive belt mounting device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6224957A (en) * | 1985-07-23 | 1987-02-02 | Takegawa Tekko Kk | Belt fitting device for belt sander |
JPS62156005A (en) * | 1985-12-27 | 1987-07-11 | Ishikawajima Harima Heavy Ind Co Ltd | Cartridge for grinding belt and roll grinder |
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 |
-
1993
- 1993-02-11 IT IT93VI000019A patent/ITVI930019A1/en unknown
- 1993-06-28 DE DE69302802T patent/DE69302802T2/en not_active Expired - Fee Related
- 1993-06-28 EP EP93110253A patent/EP0614727B1/en not_active Expired - Lifetime
- 1993-06-28 AT AT93110253T patent/ATE138305T1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6224957A (en) * | 1985-07-23 | 1987-02-02 | Takegawa Tekko Kk | Belt fitting device for belt sander |
JPS62156005A (en) * | 1985-12-27 | 1987-07-11 | Ishikawajima Harima Heavy Ind Co Ltd | Cartridge for grinding belt and roll grinder |
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Non-Patent Citations (2)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 11, no. 205 (M - 603)<2652> 3 July 1987 (1987-07-03) * |
PATENT ABSTRACTS OF JAPAN vol. 11, no. 388 (M - 652) 18 December 1987 (1987-12-18) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0691179A3 (en) * | 1994-07-08 | 1996-04-10 | Scm Group Autec Division Spa | Device to facilitate the fitting of abrasive belts to sanding machines,especially for wooden panels |
JP2008044067A (en) * | 2006-08-15 | 2008-02-28 | Toyo Tekkosho:Kk | Abrasive belt mounting device |
Also Published As
Publication number | Publication date |
---|---|
ITVI930019A1 (en) | 1994-08-11 |
DE69302802D1 (en) | 1996-06-27 |
ITVI930019A0 (en) | 1993-02-11 |
ATE138305T1 (en) | 1996-06-15 |
EP0614727B1 (en) | 1996-05-22 |
DE69302802T2 (en) | 1997-01-23 |
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