CH667839A5 - Vacuum tool for picking up small objects - includes vacuum pipe with spring lever over vacuum orifice to remove object when released - Google Patents
Vacuum tool for picking up small objects - includes vacuum pipe with spring lever over vacuum orifice to remove object when released Download PDFInfo
- Publication number
- CH667839A5 CH667839A5 CH105386A CH105386A CH667839A5 CH 667839 A5 CH667839 A5 CH 667839A5 CH 105386 A CH105386 A CH 105386A CH 105386 A CH105386 A CH 105386A CH 667839 A5 CH667839 A5 CH 667839A5
- Authority
- CH
- Switzerland
- Prior art keywords
- vacuum
- orifice
- arm
- tool
- released
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6838—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping with gripping and holding devices using a vacuum; Bernoulli devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00
- B25B9/02—Hand-held gripping tools other than those covered by group B25B7/00 without sliding or pivotal connections, e.g. tweezers, onepiece tongs
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- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D1/00—Gripping, holding, or supporting devices
- G04D1/02—Tweezers; Vice clamps or other special hand tools for watchmakers
- G04D1/028—Hand tools for gripping or holding by pneumatic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manipulator (AREA)
Abstract
The tool which is used like a pair of tweezers includes a tubular element (1), and a flexible arm (4) of similar length attached to the element at one end. The tube has one end connected to a vacuum pump, and has a small orifice (2) in the side of the other end. The arm also has a matching orifice, so that when the arm is squeezed against the tube, the orifices line up and an object may be picked up using the suction effect. To release the object the arm is released, pushing the object away from the vacuum pipe. ADVANTAGE - Handling small objects without need for valve in vacuum pipe line.
Description
DESCRIPTION
Il existe depuis longtemps, et notamment dans certaines machines-outils, des dispositifs permettant de saisir des pièces par aspiration et de les lâcher après les avoir déplacées. De tels dispositifs présentent en général un bras pourvu d'un conduit d'aspiration, luimême branché sur une pompe. Lorsque la bouche d'aspiration s'approche de la pièce à saisir, celle-ci est happée et plaquée contre la bouche. Le bras bouge ensuite, et lâche la pièce après l'avoir déplacée. Le lâchage de la pièce se fait grâce à une vanne qui interrompt l'aspiration et réinjecte de l'air afin de supprimer tout effet de ventouse.
Le désavantage de cette solution classique réside, tout d'abord, dans la nécessité de la présence d'une vanne. Un tel élément prend en effet un certain volume, ce qui interdit de le placer près de la bouche d'aspiration dans les cas mi il est nécessaire que le bout de l'outil ait une forme effilée. Par exemple, dans le montage de circuits électroniques, il est souvent nécessaire de placer des pièces minuscules dans des enfoncements. En outre, il est souvent indispensable de travailler à la main. Or, un outil destiné à être saisi à la main ne doit pas avoir une grande épaisseur. Il est vrai qu'il est possible de placer la vanne en amont, de façon à dégager l'extrémité de l'outil qui porte la bouche d'aspiration.
Cependant, c'est dans ce cas qu'apparaît le second inconvénient lié à l'utilisation d'une vanne: la distance entre la vanne et la bouche étant plus grande, le volume du conduit d'aspiration qu'il faudra remplir d'air pour lâcher la pièce sera plus grand, de sorte qu'un temps plus long s'écoulera entre le moment du signal de lâchage donné au dispositif et le moment du lâchage effectif de la pièce. Enfin, la présence d'une vanne complique le dispositif
Les fins travaux à la main se font donc, en général, au moyen de classiques brucelles, plutôt qu'au moyen d'outil à aspiration. Il est toutefois difficile avec des brucelles de saisir des pièces dans toutes les situations. Par exemple, il est malaisé de saisir une pièce de faible épaisseur qui se trouve sur une surface plane, ou de prendre une pièce au fond d'un trou.
La présente invention vise à remédier à de tels défauts en fournissant un outil de préhension par aspiration qui n'exige pas la présence d'une vanne, qui supprime l'obligation de réinjecter de l'air pour lâcher la pièce transportée, qui permette un lâchage immédiat, qui puisse être utilisé au besoin à la main et qui soit assez fin pour poser ou saisir des pièces dans des enfoncements.
L'invention est définie dans les revendications 1 et 4 à 6.
Le dessin montre, à titre d'exemple, une forme d'exécution de l'invention, à savoir un outil en coupe longitudinale.
L'outil a la forme d'une paire de brucelles, formée d'un élément 1 et d'un bras 4. L'élément 1 présente une bouche 2 à laquelle aboutit un conduit d'aspiration 3. Le conduit est branché sur une pompe à vide qui n'est pas représentée ici. Le bras 4, qui est symétrique à l'élément 1, et qui est lié à celui-ci par une extrémité, présente à son autre extrémité un orifice S qui fait face à la bouche. L'élément 1 et le bras 4 sont faits d'un matériau élastique, de sorte qu'ils forment un ressort. Dans la position de repos de l'outil, tel qu'il est représenté dans le dessin, l'élément 1 et le bras 4 sont écartés l'un de l'autre.
Pour saisir un objet, il suffit de presser l'élément 1 contre le bras 4, de façon que l'orifice vienne se plaquer sur la bouche, et d'appliquer cet orifice sur l'objet. Dans cette position, l'orifice continue la bouche. L'objet est happé et vient se coller contre l'orifice.
Pour le déposer, il suffit de relâcher le bras 4, qui s'écarte alors de l'élément 1. L'orifice s'éloigne de la bouche. L'air peut alors entrer directement dans la bouche, sans passer par l'orifice. L'objet n'est plus soumis à une aspiration et se détache de l'orifice. Il n'est pas nécessaire d'interrompre l'aspiration. La présence d'une vanne est donc superflue.
Utile principalement dans les travaux faits à la main, l'invention peut également être insérée dans une machine automatique.
DESCRIPTION
There have long been, and in particular in certain machine tools, devices enabling parts to be gripped by suction and released after having moved them. Such devices generally have an arm provided with a suction duct, itself connected to a pump. When the suction mouth approaches the part to be gripped, it is caught and pressed against the mouth. The arm then moves, and releases the part after having moved it. The part is released using a valve which interrupts the suction and re-injects air in order to eliminate any suction cup effect.
The disadvantage of this conventional solution lies, first of all, in the need for the presence of a valve. Such an element indeed takes a certain volume, which prohibits placing it near the suction mouth in cases mi it is necessary that the tip of the tool has a tapered shape. For example, in the assembly of electronic circuits, it is often necessary to place tiny parts in recesses. In addition, it is often essential to work by hand. However, a tool intended to be gripped by hand must not have a large thickness. It is true that it is possible to place the valve upstream, so as to clear the end of the tool which carries the suction mouth.
However, it is in this case that the second drawback related to the use of a valve appears: the distance between the valve and the mouth being greater, the volume of the suction duct which will have to be filled with the air for releasing the part will be greater, so that a longer time will elapse between the moment of the release signal given to the device and the moment of the effective release of the part. Finally, the presence of a valve complicates the device
Fine work by hand is therefore generally done using conventional tweezers, rather than using a vacuum tool. However, it is difficult with tweezers to grasp parts in all situations. For example, it is difficult to grab a thin piece that is on a flat surface, or to grab a piece at the bottom of a hole.
The present invention aims to remedy such defects by providing a suction gripping tool which does not require the presence of a valve, which eliminates the obligation to re-inject air to release the transported part, which allows a immediate release, which can be used if necessary by hand and which is fine enough to place or grasp parts in recesses.
The invention is defined in claims 1 and 4 to 6.
The drawing shows, by way of example, an embodiment of the invention, namely a tool in longitudinal section.
The tool has the shape of a pair of tweezers, formed by an element 1 and an arm 4. The element 1 has a mouth 2 to which a suction duct 3 terminates. The duct is connected to a vacuum pump which is not shown here. The arm 4, which is symmetrical to the element 1, and which is linked to the latter by one end, has at its other end an orifice S which faces the mouth. The element 1 and the arm 4 are made of an elastic material, so that they form a spring. In the rest position of the tool, as shown in the drawing, the element 1 and the arm 4 are separated from one another.
To grasp an object, it suffices to press the element 1 against the arm 4, so that the orifice is pressed against the mouth, and to apply this orifice to the object. In this position, the orifice continues the mouth. The object is caught and sticks against the orifice.
To deposit it, simply release the arm 4, which then departs from the element 1. The orifice moves away from the mouth. The air can then enter directly into the mouth, without passing through the orifice. The object is no longer subjected to aspiration and detaches from the orifice. It is not necessary to interrupt the suction. The presence of a valve is therefore superfluous.
Useful mainly in handmade work, the invention can also be inserted in an automatic machine.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH105386A CH667839A5 (en) | 1986-03-14 | 1986-03-14 | Vacuum tool for picking up small objects - includes vacuum pipe with spring lever over vacuum orifice to remove object when released |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH105386A CH667839A5 (en) | 1986-03-14 | 1986-03-14 | Vacuum tool for picking up small objects - includes vacuum pipe with spring lever over vacuum orifice to remove object when released |
Publications (1)
Publication Number | Publication Date |
---|---|
CH667839A5 true CH667839A5 (en) | 1988-11-15 |
Family
ID=4201353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH105386A CH667839A5 (en) | 1986-03-14 | 1986-03-14 | Vacuum tool for picking up small objects - includes vacuum pipe with spring lever over vacuum orifice to remove object when released |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH667839A5 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1855166A1 (en) * | 2006-05-12 | 2007-11-14 | ETA SA Manufacture Horlogère Suisse | Tweezers and prehension sytem |
CN104540641A (en) * | 2012-05-02 | 2015-04-22 | 拉维尔私人有限公司 | Device and method for cleaning and processing natural extracts |
-
1986
- 1986-03-14 CH CH105386A patent/CH667839A5/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1855166A1 (en) * | 2006-05-12 | 2007-11-14 | ETA SA Manufacture Horlogère Suisse | Tweezers and prehension sytem |
US7775569B2 (en) | 2006-05-12 | 2010-08-17 | Eta Sa Manufacture Horlogère Suisse | Tweezers and grasping system |
CN104540641A (en) * | 2012-05-02 | 2015-04-22 | 拉维尔私人有限公司 | Device and method for cleaning and processing natural extracts |
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PL | Patent ceased |