JPH0333491Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to the improvement of seaming machines.
More specifically, the present invention relates to a fastener pressing device for a seaming machine for a plate-like object such as a calendar.

[Prior art]

In general, plate-shaped calendars are produced by collating multiple printed calendar sheets and tightening a fastener on one end of the calendar plate made of the collated sheets using a tightening machine. be done.

By the way, this seaming machine, as shown in Figure 3,
After the calendar plate 4 is engaged with the fastener 3 positioned at a predetermined position on the movable base plate 2 facing the fixed base plate 1, the pressure plate 5 located above the movable base plate 2 is lowered. The hook 3a of the fastener 3 is pressed, and then the push knife 6 interlocking with the neck 3b of the fastener 3 and the pressure plate 5 is used to push the fastener 3 between the base plates 1 and 2 to bend it into a V-shape. In this state, the movable base plate 2 is brought close to the fixed base plate 1 while the push knife 6 is raised, and the V-shaped bent portion of the fastener 3 is pressed again, thereby performing the work of tightening the fastener to the calendar plate 4. It is something.

[Problem that the invention attempts to solve]

However, in this type of seaming machine, the position at which the pressure plate starts lowering relative to the fastener is constant, so if the thickness of the calendar plate changes due to the number of calendar sheets, thickness, etc., the pressure applied to the fastener changes. As a result, the paint on the fasteners may peel off, or
There were inconveniences such as the fasteners falling off from the calendar plate, and furthermore, being misaligned with each calendar sheet, resulting in poor product retention.

Therefore, a turnbuckle is provided on a part of the operating rod provided at both ends of the pressure plate, and the downward movement start position of the pressure plate can be adjusted by rotating the turnbuckle. Not only is the adjustment work of the turnbuckle disposed on the operating rod troublesome, but there are also problems in terms of durability.

[Means for solving problems]

Therefore, in order to solve the above-mentioned problems, this invention connects the end of the operating rod that operates the pressure plate up and down to the middle part of the operating arm, and elastically holds the operating arm at a predetermined position. one end of the operating arm is engaged with the drive cam member, the other end of the operating arm is connected to the support shaft via an eccentric, and a stop member is provided extending in the radial direction of the eccentric; By holding the pressure plate through a plurality of stop holes arranged along the circumferential direction of the support shaft, it is possible to facilitate the work of adjusting the lowering position of the pressure plate.

[Effect]

In the fastener pressing device for a seaming machine according to this invention, a stop member extending from the other end of the operating arm is held through a plurality of desired stop holes arranged along the circumferential direction of the spindle. By doing so, by moving the tilting fulcrum of the operating arm, the lowering start position of the pressing plate is adjusted.

〔Example〕

Next, a preferred embodiment of a fastener pressing device for a seaming machine according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, the fastener pressing device according to the present invention connects the ends of the operating rods 20 disposed at both ends of the pressing plate 5 of the seaming machine previously explained in FIG.
The operating arm 2 is connected to the middle part of the operating arm 24 which is elastically held via a coil spring 22.
4 is connected to the output shaft 26 of a drive device (not shown).
It is constructed by engaging a cam member 28 fixed to the cam member 28 via a roller member and holding the other end via a fulcrum position adjusting tool 30. The fulcrum position adjustment tool 30 includes an eccentric 34 that connects the end of the operating arm 24 to the support shaft 32, and a stop member 36 that extends in the radial direction of the eccentric 34.
and a plurality of stop holes 38 formed in the tightening machine main body for fixing the stop member 36 at a predetermined position along the circumferential direction of the support shaft 32.

In the fastener pressing device configured as described above, when the stop member 36 is fitted into the stop hole 38a, for example, the fulcrum of the operating arm 24 is set at position A in the circumferential direction of the support shaft 32, and the stop hole 38b, it will be set at position B. However, since the operating arm 24 is rotated by the operation of the cam member 28 using the position A or B as a fulcrum, the lowering start position of the pressure plate 5 attached to the operating arm 24 via the operating rod 20 is at the above-mentioned position. The dimension h is adjusted according to the difference in height between A and B, and therefore, suitable seaming work of the fastener can be performed according to the thickness of the calender plate.

[Effect of idea]

As mentioned above, according to the fastener pressing device of the present invention, it is possible to perform a suitable pressing operation depending on the thickness of the calendar plate around which the fastener is wound, so that the fastener does not fall off from the calendar plate. Not only can this avoid inconveniences such as the paint on the fasteners peeling off or the calendar paper sheets becoming misaligned, but the lowering position of the pressure plate can be adjusted more easily and reliably than with conventional turnbuckles. As a result, it has the advantage of improving work efficiency and durability, and its practical effects are extremely large.

Although the preferred embodiment of the fastener pressing device in the seaming machine according to the present invention has been described above, the present invention is not limited to this embodiment, and various modifications may be made without departing from the spirit of the present invention. Of course, modifications can be made.

[Brief explanation of the drawing]

Fig. 1 is an explanatory side view showing a preferred embodiment of the fastener pressing device in the seaming machine according to the present invention, and Fig. 2 is a state in which the downward position of the pressure plate is adjusted by the fastener pressing device shown in Fig. 1. FIG. 3 is a schematic explanatory diagram of a conventional seaming device. 5... Pressure plate, 20... Operation rod, 22...
Coil spring, 24... Operating arm, 26... Output shaft, 28... Cam member, 30... Fulcrum position adjuster, 32... Support shaft, 34... Eccentric,
36... Stopping member, 38... Stopping hole.

Claims (1)

[Scope of utility model registration request] A pressure plate is disposed above a pair of base plates in which at least one of the base plates is movably arranged, and the pressure plate is positioned on the base plates and is attached to the end of the plate-like object. A dish plate in which a fastener is pressed, and then the neck of the pressed fastener is pushed between two base plates with a push knife to bend it, and the bent fastener is pressed between both base plates to tighten it. In a seaming machine for a shaped object, the end of an operating rod that operates a pressure plate up and down is connected to the middle part of an operating arm, and a predetermined part of the operating arm is elastically held, and one end of the operating rod is connected to a drive cam. The other end of the operating arm is connected to the support shaft via an eccentric, and a stop member is provided extending in the radial direction of the eccentric, and the stop member is connected in the circumferential direction of the support shaft. A fastener pressing device for a seaming machine, characterized in that the fastener is held through a plurality of stop holes arranged along the cinching machine.