Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Reexamination Certificate
2001-09-18
2004-03-23
Rada, Rinaldi I. (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
C227S127000, C227S135000, C227S136000
Reexamination Certificate
active
06708861
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a supply mechanism and a nail magazine for connected nails in nailing machine. In particular, to a nail magazine into which plural sheets of connected nails can be loaded.
2. Description of the Related Art
Conventionally, as a nail magazine for use in a nailing machine using connected nails such as stick nails or sheet nails composed of a large number of nails connected together by hard paper, there is known a nail magazine of a successively loading type into which two or more sheets of connected nails can be loaded so as to save the time and labor for loading the connected nails.
The nail magazine of this type comprises a nail storage chamber into which a plurality of connected nails can be loaded in parallel to one another, and a pressing member (pressure plate), which is in the shape of plate, of a spring type which can be elastically contacted with side surfaces of the connected nails stored within the nail storage chamber to thereby press the same against one inner wall surface (nail guide surface) of the nail storage chamber. Also, there is disposed a separator which, in linking with a nail feed pawl, can be inserted into between a first row of connected nails and a second row of connected nails to separate them from each other. Thus, when the nail feed pawl reciprocates back and forth to thereby feed the first row of connected nails, the second row of connected nails can be prevented from moving.
The plurality of connected nails loaded into the nail storage chamber are pressed by the pressing member against the nail guide surface of the nail storage chamber which communicates with the nose of the nailing machine. A first row of connected nails contacted with the nail guide surface are fed toward the nose of the nailing machine by a nail feed pawl which can be actuated in linking with a nailing piston of the nailing machine, and the leading nail is loaded into the nose and is then driven out therefrom by the nailing piston.
In the case where the last one of the first row of connected nails is moved ahead of the leading one of a second row of connected nails, the second row of connected nails are pressed by the pressing member against the nail guide surface of the nail storage chamber so that the leading one of the second row of connected nails is contacted with the last one of the first row of connected nails; and, the second row of connected nails are fed by the nail feed pawl, that is, the nails are successively supplied to the nose of the nailing machine.
In order to be able to cope with various connected nails differing in the nail length, in the nail storage chamber, there is disposed a nail guide table of a vertically sliding type for supporting the connected nails from below; that is, the position of the nail guide table can be changed according to the lengths of the nails to thereby adjust the heights of the heads of the nails to a constant level.
Since the conventional nail magazine of a successively loading type is structured such that the vertical positions of the nails are adjusted by the nail guide table of a vertically sliding type, it takes time and labor to adjust the nail guide table each time the kinds of the connected nails are changed.
Further, because the connected nails carried on the nail guide table adjoin each other with their nail heads held level with each other, the breadth of the nail storage chamber must be set substantially equal to the product of the nail head diameter and the number of connected nails, which raises a problem that the breadth of the nail magazine is increased.
Further, as mentioned above, in the conventional nail magazine of a successively loading type, there is disposed a separator for separating a first row of connected nails and a second row of connected nails from each other and thus, when the first row of connected nails are fed, the second row of connected nails can be prevented from moving. In this case, since the connected nails carried on the nail guide table adjoin each other with their nail heads held level with each other, the breadth of the nail storage chamber must be set equal to the sum of the thickness of the separator and the product of the nail head diameter and the number of connected nails, which not only increases the breadth of the nail magazine but also complicates the structure thereof.
SUMMARY OF THE INVENTION
Accordingly, to save the time and trouble for the adjustment of the nail vertical positions and to reduce the size of the nail magazine of a successively loading type, there are raised some problems to be solved. Thus, it is an object of the invention to solve the above problems found in the conventional nail magazine and supply mechanism for a nailing machine.
In order to reduce the size of the nail magazine, the connected nails adjoining each other within the nail magazine may be stored in such a manner that they are shifted vertically to be uneven from each other in the vertical direction, the breadth of the nail magazine can be reduced as much as possible. However, in this case, the nail magazine must be structured such that the respective rows of connected nails can be held stably and also, when a rear row of connected nails are moved to a front row, the movements thereof in the vertical direction can be made positively.
Therefore, to supply a nail magazine which is capable of not only storing a plurality of connected nails unevenly but also controlling the vertical positions of the respective rows of connected nails, there are raised some problems to be solved Thus, it is another object of the invention to solve the above problems found in the conventional nail magazine.
Further, to simplify the structure of a nail magazine of a successively loading type as well as reduce the size and weight of the nail magazine, there are raised some technical problems to be solved. Thus, it is also another object of the invention to solve the above problems found in the conventional nail magazine.
In attaining one of the above object, according to the invention, there is provided a nail magazine for a nailing machine structured such that: a plurality of connected nails are stored in parallel therein, a pressing member is pressed against the side surfaces of the connected nails to thereby hold the plurality of connected nails by and between the pressing member and a nail guide surface within the magazine, and the connected nail that is contacted with the nail guide surface is supplied to the nose of the nailing machine by a nail feed pawl, wherein not only the nail heads of a first row of connected nails are supported on the corner portion of the upper end of the nail guide surface and the nail heads of a second row of connected nails are supported on a nail head support disposed on the pressing member, but also the nail head support is disposed at a higher position than the upper end of the nail guide surface, whereby the nail heads of the first and second rows of connected heads are stored in such a manner that they are shifted vertically from each other.
Further, in attaining one of the above object, according to the invention, there is provided a nail magazine for a nailing machine structured such that: a plurality of connected nails are stored in parallel therein, a pressing member is pressed against the side surfaces of the connected nails to thereby hold the plurality of connected nails by and between the pressing member and a nail guide surface within the magazine, and the connected nail that is contacted with the nail guide surface is supplied to the nose of the nailing machine by a nail feed pawl, wherein not only the nail heads of a first row of connected nails are supported on the corner portion of the upper end of the nail guide surface and the nail heads of a second row of connected nails are supported on a nail head support disposed on the pressing member, but also the nail head support is disposed at a higher position than the upper end of the nail guide surface, whereby the nail heads of the first
Osuga Satoshi
Takezaki Mitsugu
Max Co. Ltd.
Morgan & Lewis & Bockius, LLP
Rada Rinaldi I.
Truong Thanh
LandOfFree
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