Elongated-member-driving apparatus – With means to position 'mating-member' in alignment with driver – Comprising feed means for 'mating-member'
Patent
1996-03-18
1998-07-07
Smith, Scott A.
Elongated-member-driving apparatus
With means to position 'mating-member' in alignment with driver
Comprising feed means for 'mating-member'
227119, 227153, 227155, A41H 3702
Patent
active
057755663
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a machine for the attachment of buttons, rivets or the like, preferably to articles of clothing, which buttons, rivets of the like consist of an upper portion and a lower portion, material held between an upper clamping jaw and a lower clamping jaw being punched by actuation of a ram, and, after a movement of a slide having an upper tool and a lower tool, the button portions disposed therein being positively connected to one another by actuation of the ram by way of the upper tool and the lower tool being brought towards one another.
A machine of the kind under discussion is known from DE 41 17 767 A1, the carriage being formed in the shape of a U and having U-shaped arms extending horizontally. These latter serve to hold upper and lower tools located one after the other in a sequential manner, which tools are each pushed under the ram according to the operation to be carried out. Three tools located one after the other are provided, the central tool serving for punching the article of clothing. There then takes place a displacement of the slide in the one or the other direction, so that the corresponding upper tool thereby reaches an aligned disposition opposite the ram.
SUMMARY OF THE INVENTION
It is an object of the invention to simplify the construction of a machine of the foregoing kind, in particular in the region of the tools.
This object is met by an attachment tool at the ram end being disposed, in a hole punching disposition, in coaxial disposition relative to a hole punching tool.
As a result of an arrangement of this kind, the construction of a machine of the present kind is simplified, along with reduced manufacturing costs. The attachment tool at the ram end and the hole punching tool are in coaxial alignment with one another in the hole punching disposition. There results from this a saving of space, which facilitates a tighter construction of the machine in the tool region. Only after punching of the material held between the clamping jaws, does the hole punching tool leave its disposition in which it is coaxial with the attachment tool at the ram end, and this is achieved by displacement of the slide. The attachment tool at the ram end can then extend between two tong jaws holding a button portion. These jaws are spread apart from one another during the downward travel of the ram by the attachment tool at the ram end, with release of the button portion, following on which the attachment tool travels into the position for connecting the button portions to one another. It is therefore only necessary to displace a relatively small mass, so that with simultaneous pre-punching of the article of clothing, approximately 160 attachment operations per minute may be carried out. After an attachment operation, the slide then returns back again into the position in which the attachment tool at the ram end is aligned with the hole punching tool. A new working cycle may then begin.
It has been found constructionally advantageous to provide a shoulder projecting from the ram, which, during hole punching, impacts against an opposing or counter shoulder of the one punch tool of the two punch tools working in opposition to one other. During the downward displacement of the ram, the shoulder of this ram brings along with it therefore, the punch tool associated with the ram by way of the counter shoulder. This takes place in the hole punching phase. When this is ended, the slide begins its displacement, by which the counter shoulder reaches a position away from the region of the shoulder of the ram.
For a trouble-free working run, there contributes the fact that the vertical displacement of one and/or both oppositely located tools is achieved by ram actuation and/or by a horizontal movement of the tool slide. When the counter shoulder leaves the region of the shoulder of the ram by virtue of slide movement, the horizontal movement of the tool slide is used in order to effect a fixed vertical displacement of a tool.
In advantageous manner, it i
Hagmann Paul
Kochs Karl-Josef
Farber Martin A.
Smith Scott A.
William Prym GmbH & Co. KG
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