Manufacturing container or tube from paper; or other manufacturi – Tool or tool support – Adjustable
Reexamination Certificate
2002-09-04
2004-03-23
Yu, Mickey (Department: 3721)
Manufacturing container or tube from paper; or other manufacturi
Tool or tool support
Adjustable
C493S424000, C493S471000, C493S432000, C493S476000
Reexamination Certificate
active
06709376
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a jaw cylinder in a jaw folder for a rotary press. In particular, it relates to a jaw cylinder in a jaw folder, which is possible to adjust a gap between a stationary (non-open/close) member and a swing (open/close) member in a jaw mechanism during operation.
2. Description of the Related Art
Publicly known jaw cylinders capable of adjusting a gap between a stationary member and a swing member in a jaw mechanism during operation include those disclosed in Japanese Patent Publication No. 7-55761 and Japanese Patent Nos. 2637067, 2779140 and 2848982, for example.
JP 7-55761 describes a jaw cylinder equipped with an adjustment mechanism capable of adjusting a gap between a stationary member and a swing member in a jaw mechanism based on a result obtained from on-machine measurement of a thickness of a web to be processed. This jaw cylinder has a jaw cylinder shaft rotatably supported on two opposite frames. A first member provided with the stationary member in the jaw mechanism and a second member provided with the swing member in the jaw mechanism are attached to the jaw cylinder shaft rotatably about the rotational centerline thereof. The jaw cylinder shaft further includes a first, a second and a third adjustment shafts. The first adjustment shaft is possible to rotate in synchronization with the jaw cylinder shaft. The first adjustment shaft has the rotational centerline coincident with the rotational centerline of the jaw cylinder shaft. The second adjustment shaft is possible to rotate about the second rotational centerline that is perpendicular to the rotational centerline of the jaw cylinder shaft and extends in the radial direction of the jaw cylinder. The second adjustment shaft is linked through a bevel gear to the first adjustment shaft to receive rotations therefrom. The third adjustment shaft is possible to rotate about the third rotational centerline that is perpendicular to the rotational center line of the jaw cylinder and to the second rotational centerline. The third adjustment shaft is linked through a bevel gear to the second adjustment shaft to receive rotations therefrom. The third adjustment shaft has one end screwed into a female threaded member attached to the first member and the other end screwed into a female threaded member attached to the second member. The jaw cylinder shaft and the first and second members are configured to rotate synchronously. On the basis of the above measured result, it rotates the first adjustment shaft relative to the jaw cylinder shaft, then rotates the third adjustment shaft through the second adjustment shaft, and turns the first and second members oppositely about the rotational centerline of the jaw shaft. The gap between the stationary and swing members in the jaw mechanism can be adjusted by widening
arrowing the gap by an equivalent amount oppositely from the location of a blade for inserting a print therebetween.
JP 263067 describes a jaw cylinder equipped with an adjustment mechanism capable of adjusting a gap between a stationary member and a swing member in a jaw mechanism. This jaw cylinder has a jaw cylinder shaft rotatably supported on two opposite frames. A first member provided with the stationary member in the jaw mechanism and a second member provided with the swing member in the jaw mechanism are attached to the jaw cylinder shaft rotatably about the rotational centerline thereof. The jaw cylinder shaft also includes an adjustment shaft that is rotatable around the same rotational centerline as the jaw cylinder shaft synchronously therewith and movable along the rotational centerline of the jaw cylinder shaft. The adjustment shaft has a groove tilted to the moving direction thereof. The jaw cylinder shaft further includes an adjustment arm that has one end linked to the groove and is movable in the direction perpendicular to the rotational centerline and in the radial direction of the jaw cylinder. On the other end of the adjustment arm, two axially symmetric slopes are arranged in parallel with the rotational centerline and equally tilted to the moving direction of the arm. One of the slopes is formed in contact with the first member and the other the second member. This adjusting mechanism allows the jaw cylinder shaft and the first and second members to rotate synchronously. A male threaded member is coupled through a bearing to the adjustment shaft on the same rotational centerline and is screwed into a female screw secured on a frame. When the male threaded member is rotationally operated to move the adjustment shaft along the rotational centerline, the adjustment arm is displaced in the radial direction. The two axially symmetric slopes on the adjustment arm are employed to turn the first and second members, which contact respectively with the two slopes, oppositely about the rotational centerline of the jaw shaft. The gap between the stationary and swing members in the jaw mechanism can be adjusted by widening
arrowing the gap by an equivalent amount oppositely from the location of a blade for inserting a print therebetween.
JP 2779140 describes a jaw cylinder equipped with an adjustment mechanism capable of adjusting a gap between a stationary member and a swing member in a jaw mechanism. This jaw cylinder has a jaw cylinder shaft rotatably supported on two opposite frames. A first member provided with the stationary member in the jaw mechanism is attached to the jaw cylinder shaft rotatably about the rotational centerline thereof. A second member provided with the swing member in the jaw mechanism is attached to an eccentric location on the first member. A gear mechanism is provided to transmit rotations from the jaw cylinder shaft to the first member so as to rotate the first member in synchronization with the jaw cylinder shaft. The torsion of a helical gear in the gear mechanism is employed to turn the first member relative to the jaw cylinder shaft about the rotational centerline of the jaw cylinder shaft. The angular displacement of the first member is transmitted to the second member through another gear or link mechanism. The second member is turned relative to the first member in the direction opposite to the direction of the angular displacement of the first member to move the swing member close to and apart from the stationary member. This arrangement is operative to turn the first member relative to the jaw cylinder shaft and turn the second member relative to the first member. The gap between the stationary and swing members in the jaw mechanism can be adjusted by widening
arrowing the gap by an equivalent amount oppositely from the location of a blade for inserting a print therebetween.
JP 2848982 describes a jaw cylinder equipped with an adjusting mechanism capable of adjusting a gap between a stationary member and a swing member in the jaw mechanism. This jaw cylinder has a jaw cylinder shaft rotatably supported on two opposite frames. A first member provided with the stationary member in the jaw mechanism and a second member provided with a swing member in the jaw mechanism are attached to the jaw cylinder shaft rotatably about the rotational centerline thereof. A transmission gear is interposed between the first and second members to rotate about the rotational centerline of the jaw cylinder shaft and mated with a gear located on the jaw cylinder shaft to rotate integrally with the jaw cylinder shaft. When the transmission gear rotates together with the jaw cylinder shaft, the first and second members rotate together. When the transmission gear turns relative to the jaw cylinder shaft using the torsion of the helical gear, the first and second members turn oppositely to move the swing member close to and apart from the stationary member. Alternatively, so as to rotate the first and second members in synchronization with the jaw cylinder shaft, the torsion of the helical gear in the gear mechanism for transmitting rotations from the jaw cylinder shaft to the first and second members can be e
Fujinuma Hiroyuki
Hasegawa Toshio
Nakajima Tomonari
Nanba Takeo
Kabushiki Kaisha Tokyo Kikai Seisakusho
Tawfik Sameh
Trexler, Bushnell Giangiorgi, Blackstone & Marr, Ltd.
Yu Mickey
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