EP0292490A1 - Procede et dispositif de prehension d'une piece souple sur une pile. - Google Patents
Procede et dispositif de prehension d'une piece souple sur une pile.Info
- Publication number
- EP0292490A1 EP0292490A1 EP19870901062 EP87901062A EP0292490A1 EP 0292490 A1 EP0292490 A1 EP 0292490A1 EP 19870901062 EP19870901062 EP 19870901062 EP 87901062 A EP87901062 A EP 87901062A EP 0292490 A1 EP0292490 A1 EP 0292490A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- attachment
- support
- gripping
- zone
- shoe
- 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
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 210000000056 organ Anatomy 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 3
- 229910001651 emery Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- GHASVSINZRGABV-UHFFFAOYSA-N Fluorouracil Chemical compound FC1=CNC(=O)NC1=O GHASVSINZRGABV-UHFFFAOYSA-N 0.000 claims 2
- 229940001981 carac Drugs 0.000 claims 2
- 239000004753 textile Substances 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/22—Separating articles from piles by needles or the like engaging the articles
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
- A41H43/00—Other methods, machines or appliances
- A41H43/02—Handling garment parts or blanks, e.g. feeding, piling, separating or reversing
Definitions
- the present invention relates to the gripping of a flexible piece and having a certain elasticity, such as a textile fabric on a support, in particular a pile. It applies in particular in the field of manufacturing automation where the parts to be assembled have been previously cut while they were in the form of batteries or mattresses. After the cutting operation, it is necessary to take the pieces one after the other from the stack and present them to the assembly station. Numerous methods and devices for gripping a flexible piece on a support have been proposed, based on very varied principles of implementation. According to document FR-A-2 249 008, corresponding to document US-A-3 981495, there are used two hooking members with movable needles which are planted in the opposite edges of the upper part of the stack.
- the upper part of the stack is generally clamped.
- a roller covered with a rough surface is used as the hooking member, arranged so as to be able to perform a rotation of 180 ° or more during which the fabric can roll up over a large area around the periphery of the roller, so that it can then be transported with the roller when it moves.
- This device has the particular disadvantage that it requires having a roller whose length exceeds that of the widest parts, which results in a significant bulk.
- the object of the invention is to propose a new process which largely overcomes the aforementioned drawbacks, and which is specially adapted for flexible pieces and having a certain elasticity, in particular knitting pieces.
- the object of the invention is of the general type according to which the part is held on the support in a so-called holding zone, preferably situated at one end of the part, by applying a pressing member to this zone, it is applied to the part, in a zone remote from the holding zone, preferably along the opposite end of the part, a hooking member then, the hooking member is moved away from the support so as to remove the part from the support , the pressing member is raised and the part is removed from the support by directing it to the next station,
- a fastening member is applied to the part, the surface of which in contact with the part has a roughness sufficient to allow the attachment of the part in extension by friction,
- the surface of the latching member applied to the part is moved in the direction opposite to that of the holding zone, whereby the part is hung on the latching surface and is stretched between the holding zone and a so-called attachment zone,
- the attachment member is moved away from the support so that, the part being removed from the support, it remains taut between the holding zone and the attachment zone,. the two lateral edges, not maintained, of the tensioned piece are grasped by gripping means, .
- the hooking member is moved towards the gripping means whereby the part relaxes between the hooking zone and the gripping means and the hooking is less pronounced,.
- the gripping means are moved above the support in the direction of the holding zone, while raising the pressing member, whereby the part is released from the latching member, is removed from the support and is directed by means of gripping to the next post.
- the attachment surface having a curved shape the displacement of the surface of the attachment member according to the third step of the method consists in a rotation of the surface of said member allowing both the application of the entire surface attachment to the part and the extension of said part.
- the curved, and more particularly cylindrical, shape of the gripping surface is very advantageous in that it allows the part under extension to develop tension forces which press it against the surface and thereby increase the gripping. , because the penetration of rough protrusions in the fabric increases as well as friction.
- the process of the invention differs in particular from the known processes by the fact that the removal of the textile piece is carried out in two very distinct phases: on the one hand, the temporary attachment phase of the piece, carried out by specific organs not causing degradation of the fabric; on the other hand, the actual displacement phase, carried out by other specific organs.
- This dissociation leads to a simplification of the organs involved and their adjustment.
- the specificity of the attachment members, and their provisional role makes it possible to envisage a non-aggressive attachment method, by roughness under extension, the extension requiring in the case of the invention only a relatively displacement low rough surface of attachment. This small displacement makes it possible to design the attachment member in the form of one or more simple tilting pads, of reduced overall dimensions.
- the method according to the invention is advantageously implemented work in a gripping device of the type comprising a support for at least one flexible part and having a certain elasticity, a pressing member matched with suitable means so that said member, from a high position where it is not in contact with the part, take support on said part and maintain it on the support in a holding zone a hooking member intended to come into contact with the part in a so-called hooking zone opposite to the holding zone, said member being accompanied by displacement means making it possible to apply the member to the part and removing it from the support, and general displacement means making it possible to move the gripped part and direct it to the next station.
- the attachment member has a surface which has a roughness sufficient to allow the attachment of the piece in extension by friction, its displacement means are arranged to allow it to achieve the extension of the piece.
- the device further comprises two gripping means placed opposite one another along the two unsupported sides of the part and positioned above the plane of the part when the latter is in contact with the support. , said gripping means being accompanied by said general means of movement allowing them to approach the part taken and stretched and to grasp it, then to direct it to the next station.
- the surface of the fastening member intended to come into contact with the part comprises asperities which cling to the constituent fibers of the part. This will for example be fine-grained emery cloth.
- the attachment surface has the shape of a portion of cylinder, and the displacement means matched to the attachment member make it possible to apply said surface to the part along a generator of said cylinder and then to make rotate the cylinder portion on itself by moving said generator away from the holding zone while keeping the surface in contact with the part.
- This particular provision increases substantially the attachment of the part on the surface, when the part is in extension.
- the attachment member comprises:. the body of the member, movable vertically with respect to the support by means of a vertical displacement means, for example a jack,. a shoe of semi-cylindrical shape, movable in rotation about the axis of said cylinder and secured to the body of the member by this same axis.
- the rotation of the pad can be obtained for example by the action of a jack whose body is integral with the body of the hooking member and whose end of the rod is integral with the pad at an eccentric point relative to to the axis of rotation.
- FIG. 1 is a schematic view in elevation and in vertical section through a fastening member according to the preferred mode of the invention
- FIG. 2 is a schematic view in horizontal section of the same member at the level of the axis of rotation of the attachment pad,.
- FIGS. 3 to 7 show the different stages of operation of the device, according to vertical schematic sections,
- FIGS. 5b and 5c show the breakdown of the gripping step of the part shown in FIG. 5a, according to plan views
- Figure 8 is a perspective view of the attachment pad.
- the handling device shown comprises a frame
- the hooking member 4 intended to hang and take the upper part 5 from the stack 3 in an attachment zone 6, located along an edge of the part 5.
- the pressing member 7 intended to hold the part 5 on the stack 3 is also fixed to the element 1 'of the frame 1. a holding zone 8, located along the edge of the part 5, and opposite to the attachment zone 6.
- two gripping pliers 29 and 29 '' intended to grip the part 5 at the unsupported edges, that is to say neither corresponding to the holding zone 8 nor to the attachment zone 6, and to move it parallel to the support 2 in a direction going from the attachment zone 6 to the holding zone 8 (arrow D in FIGS. 7 and 8).
- the pressing member 7 comprises a shoe 9, fixed to the end of the rod 30 of a jack 31 (fig.3) having two extreme positions.
- One, extended rod, where the shoe is applied to the part 5 exerts a certain pressure on the pile, which will have the effect of blocking the part in the holding zone 8, corresponding to the zone of the part 5 in contact with the surface of the shoe 9.
- the other position of the jack, rod retracted, separates the shoe 9 from the part 5 and allows the release thereof.
- the essential part of the attachment member 4 consists of a shoe 10 (FIG. 8), the section of which corresponds to a portion of a circle and on the cylindrical surface of which is fixed an element 11, which is the attachment element.
- This element 11 for example a fine-grained emery cloth, is placed around the shoe 10 so as to surround it over the entire curved portion and to extend beyond the flat upper part of the shoe.
- a plate 12 is fixed against the upper part of the pad and blocks in position the element 11 for hooking.
- the plate 12 has two rods 13,13 'perpendicular to the plane of the plate.
- the shoe 10 is connected to the body 14 proper of the attachment member by the shoe support 15.
- This shoe support 15, in the shape of a stirrup (FIG. 2) has two axes 16 and 16 ′ carried by flanges 17 and 17 'fixed on the body 14.
- the shoe 10 itself is fixed on the shoe support 15 by means of the two rods 13 and 13' which are placed in hollow cavities provided in the support 15, in which they are locked by means of pressure screws 18.
- the shoe support 15 is rotatable around the axes 16, 16 'which coincide with the axis of symmetry of the cylinder corresponding to the surface semi-cylindrical outer surface of the shoe 10.
- the rotational movement of the surface of the shoe 10 is obtained by the action of the jack 19 which is integral with both the shoe support 15 and the body 14 of the attachment member.
- the body of the jack 19 can oscillate around the axes 20, 20 ′, carried by bearings made in the body 14, and the end of the rod 21 of the jack 19 is linked to the support 15 by yoke 22 and axis 23.
- the body 14 of the hooking member is fixed to the end of the rod 24 of the jack 25, the body of which is integral with a part 26 of the frame of the device.
- Rods 27, 27 ′, fixed to the body 14, guide the latching member 4 during the action of the jack 25 between a first position where, rod 24 extended, the pad 10 is in contact with the part 5 placed on top of the stack 3 and a second position where, rod 24 retracted, the shoe 10 is above the stack 3 and at a certain distance from it.
- the two gripping pieces 29, 29 ′ are of a known type; each of them has two jaws - having two positions, one open, the other closed.
- These clamps are provided with displacement means: on the one hand transverse with respect to the part 5 for the gripping operation for example by means of the jacks 32, and on the other hand lateral for the transfer operation from the part 5 to the next station, for example by means of jacks 33 whose body is fixed to the structure l 'and whose rod is connected to the body of jacks 32, which body are guided on guide rails 34 parallel to direction D and integral of the structure l '(cf. fig.5b).
- the clamps can be of the type known from document US-A-4055244, the teaching of which is incorporated here by reference.
- the cylinders 19, 25, 31, 32 and 33 are for example cylinders double acting hydraulics connected by fluidic connections
- FIGS. 3 to 7 The operation of the device which has just been described is illustrated by FIGS. 3 to 7.
- the stack of parts 3 to be unstacked is placed (FIG. 3) on the support 2 which is a table at constant level provided with a mounting member - drop not shown.
- Such a table can be of the type described in document US-A-3 253 824, the teaching of which is incorporated here by reference.
- the pressing pad 9 is applied against the end of the part 5 to be gripped, in the holding zone 8, corresponding to the end of the part opposite to that which is to be gripped.
- the gripping member 4, under the action of the jack 25, descends until the hooking element 11 covering the pad 10 meets the part 5 and slightly compresses the stack 3.
- end 28 of the part, along the attachment zone 6, relaxes and detaches from the surface of the attachment element 11.
- the clamps 29, 29 ′ move, FIG. 7, parallel to the support 2 and take the piece 5 in the direction of the arrow D.
- the beginning of this movement has the effect of relaxing the piece 5.
- the pressing pad 9 is then raised under the action of the corresponding jack, and the part 5, being completely released, is transported by the clamps 29, 29 'to the next station.
- attachment pad consists of two distinct elements, one (pad support) integral with the body of the attachment member and the other (pad itself) easily removable has two advantages appreciable: this makes it possible to adapt the length of the skate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8601792 | 1986-02-10 | ||
FR8601792A FR2594104B1 (fr) | 1986-02-10 | 1986-02-10 | Procede et dispositif de prehension d'une piece souple sur une pile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0292490A1 true EP0292490A1 (fr) | 1988-11-30 |
EP0292490B1 EP0292490B1 (fr) | 1990-02-07 |
Family
ID=9331974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870901062 Expired - Lifetime EP0292490B1 (fr) | 1986-02-10 | 1987-02-09 | Procede et dispositif de prehension d'une piece souple sur une pile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0292490B1 (fr) |
JP (1) | JPH01502106A (fr) |
DE (1) | DE3761653D1 (fr) |
FR (1) | FR2594104B1 (fr) |
WO (1) | WO1987004689A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI810085B (zh) * | 2022-10-07 | 2023-07-21 | 峻典股份有限公司 | 多角度刺針夾具裝置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1453273A (fr) * | 1964-03-12 | 1966-09-16 | L & L Mfg | Procédé et dispositif pour l'extraction d'une pile de morceaux de tissu |
BE806542A (nl) * | 1973-10-26 | 1974-02-15 | Bijttebier Gaspar A H | Werkwijze voor het opnemen van een laag soepel materiaal vanaf een stapel en inrichting die deze werkwijze toepast |
FR2249008B1 (fr) * | 1973-10-26 | 1978-06-09 | Bijttebier Gaspar | |
US4283047A (en) * | 1977-06-17 | 1981-08-11 | Levi Strauss & Co. | Facing ply separator |
FR2456690A1 (fr) * | 1979-05-17 | 1980-12-12 | Anvar | Procede de prehension et dispositif de manutention utilisant ce procede |
-
1986
- 1986-02-10 FR FR8601792A patent/FR2594104B1/fr not_active Expired
-
1987
- 1987-02-09 JP JP87501180A patent/JPH01502106A/ja active Pending
- 1987-02-09 EP EP19870901062 patent/EP0292490B1/fr not_active Expired - Lifetime
- 1987-02-09 WO PCT/FR1987/000035 patent/WO1987004689A1/fr active IP Right Grant
- 1987-02-09 DE DE8787901062T patent/DE3761653D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8704689A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3761653D1 (de) | 1990-03-15 |
FR2594104A1 (fr) | 1987-08-14 |
WO1987004689A1 (fr) | 1987-08-13 |
JPH01502106A (ja) | 1989-07-27 |
FR2594104B1 (fr) | 1988-11-18 |
EP0292490B1 (fr) | 1990-02-07 |
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