JPH0452212Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a roll loading table that detects whether a roll is placed on the roll mounting table on which a roll of printing paper or the like is placed. Regarding a detection device.

[Prior art]

BACKGROUND ART Conventionally, in printing factories and the like, in order to store a roll before being applied to a printing press, a winding mounting table having a substantially V-shaped support surface has been used. The work of placing the winding on the winding mounting table is usually carried out by an operator manually operating a hoist or the like.

[Problem that the invention attempts to solve]

Recently, there has been a desire to automate the operation of placing the winding on the winding mounting table. In order to automate this work, it is naturally necessary to detect that the winder is seated on the winder mounting table. By the way, as a method for detecting whether the winding is sitting on the winding table, a switch such as a limit switch is placed at the position where the winding is placed, and when the winding is lowered from above the winding table, the winding is detected. One possible method is to activate the switch.

However, the diameters of the windings placed on the winding table are not necessarily the same, and for this reason, when windings of different diameters are placed on a substantially V-shaped support surface, the contact position between the support surface and the winding is the diameter of the winding. It will vary depending on the Therefore, even if a switch is placed at a certain position on the support surface so that winding of a certain diameter can be detected, the switch may not work well for winding of a different diameter. , a problem arises in that detection failure occurs.

The present invention has been made in view of this problem, and provides a winding load detection device that can reliably detect winding regardless of its diameter when the winding is placed on a substantially V-shaped support surface. The purpose is to provide.

[Means for solving problems]

The present invention, which was made to achieve the above object, is approximately V
A winding load detection device for detecting the presence of a winding placed on a support surface in the shape of a letter, the device being rotatable about an axis parallel to the axis of the winding placed on the support surface. It has a detection member and a switch that detects rotation of the detection member, and the detection member projects above the support surface so that it is normally pushed down by a winder placed on the support surface. The object of the present invention is to provide a winding object detection device characterized in that it has a winding contact surface that becomes flush with the supporting surface when the winding object is pushed down by winding.

〔Example〕

Embodiments of the present invention shown in the drawings will be described below.

FIG. 1 is a perspective view schematically showing a winding mounting table 1 equipped with a winding load detection device according to an embodiment of the present invention and a hoist 3 for placing a winding 2 thereon. The take-up mounting table 1 has a take-up receiving section 4 having a shallow V-shaped support surface 4a on the upper surface, and the take-up 2 is placed on the support surface 4a. Reference numeral 5 denotes a pusher for positioning the winding 2 by pushing the end face of the winding 2 placed on the support surface 4a toward the center. Reference numeral 6 designates a winding load detection device which is an embodiment of the present invention, and as shown in FIGS. 2 and 3, a support shaft 7
It has a detection member 8 which is rotatably held in the rotation direction, and a limit switch 9 which detects the rotation of the detection member 8. The support shaft 7 is mounted parallel to the axis of the take-up 2 placed on the support surface 4a, and therefore the detection member 8 can be rotated about an axis parallel to the axis of the take-up placed on the support surface 4a. be. The detection member 8 normally projects upwardly from the support surface 4a as shown in FIG. 2 by means such as a spring (not shown).
When the winding 2 descends, it contacts the winding 2 and is pushed down. Furthermore, the detection member 8
The upper surface of the holder, that is, the take-up contact surface 8a that comes into contact with the take-up is shaped to be flush with the support surface 4a when pushed down by the take-up, as shown in FIG.

Next, the operation of the winding inventory detection device 6 having the above structure will be explained. The hoist 3 holds the winding 2 and moves above the winding platform 1, and then lowers the winding 2 to place it on the support surface 4a of the winding platform 1. At this time, as shown in FIG. 2, the winding 2 contacts the winding contact surface 8a of the detection member 8 and pushes it down, so the detection member 8 turns around the support shaft 7, as shown in FIG. Activate limit switch 9. Thus, the seating of the winder 2 on the support surface 4a is detected by the signal from the limit switch 9. Here, winding 2
If the diameters differ, the contact position when seated on the support surface 4a will differ. For example, as shown in FIG. 3, the small diameter winding 2 indicated by the solid line is supported on the support surface 4a at position A, while the large diameter winding 2 indicated by the two-dot chain line is supported on the support surface 4a at position B. Supported. However, in any case, the sensing member 8 is pivoted by the winding 2 to a position where the winding contact surface 8a coincides with the support surface 4a, in other words, the pivoting stroke of the sensing member 8 is It is constant regardless of the diameter of the limit switch 9, and the limit switch 9 can be turned on and off reliably.

Note that the winding 2 is activated by the signal from the limit switch 9.
When the seating of the hoist 3 is detected, the hoist 3 stops descending and releases the hold on the winding 2. In this way,
Automatic transport of the winding to the winding mounting table 1 by the hoist 3 is performed.

[Effect of idea]

As explained above, in the present invention, the winding contact surface of the detection member for detecting the winding placed on the approximately V-shaped support surface is made to be the same as the support surface when pushed down by the winding. Since it has a flat shape, the turning stroke of the detection member when the winding is lowered is constant regardless of the diameter of the winding, and the switch that detects the rotation of this detection member can be turned on and off reliably. It has the effect of being possible.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing a winding mounting table 1 equipped with a winding load detection device according to an embodiment of the present invention and a hoist 3 for placing a winding 2 thereon;
3 are enlarged front views of the winding load presence detection device of the above embodiment, each showing a different state. DESCRIPTION OF SYMBOLS 1... Winding mounting table, 2... Winding, 3... Hoist, 4... Winding receiver, 4a... Support surface, 6... Winding load presence detection device, 7... Support shaft, 8 ...detection member,
8a... Winding contact surface, 9... Limit switch.

Claims (1)

[Scope of utility model registration request] A winding load detection device for detecting the presence of a winding placed on a substantially V-shaped support surface, the device being rotatable about an axis parallel to the axis of the winding placed on the support surface. and a switch for detecting rotation of the detection member, the detection member comprising:
Usually, the winder protrudes above the support surface so as to be pushed down by the winder placed on the support surface, and is flush with the support surface when pushed down by the winder. A winding load detection device characterized by having a contact surface.