JPH0565945U - Film roll diameter measurement unit movement operation device - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the mounting of film rolls. A movable frame 1 having a support shaft 6 for supporting a film roll 9 can be moved up and down between a regular set position and a mounting position of the film roll 9 by an operating cylinder 4, and the movable frame is also movable. When the movable frame 1 is lowered to the mounting position of the film roll 9, the detection lever 11 for measuring the winding diameter of the film roll 9 is displaced to the retracted position so that the film roll 9 is mounted. To make it easier.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a moving operation device for retracting a measuring unit that measures a winding diameter of a film roll when the film roll is loaded, from a loading position of the film roll.

[0002]

[Prior Art]

 For example, a bag making and packaging machine is loaded with a long film, which is a material of a bag, wound in a roll shape, and the loaded film roll is changed less frequently to increase the operating rate of the apparatus. The one with the largest diameter is used.

However, when such a large-diameter film roll is loaded, the inertia of the film largely changes depending on the winding diameter between the beginning of the loading and the position near the end of the loading, so that the tension of the film is always kept constant. It will be necessary to attach a separate measuring unit to measure the roll diameter of the film roll and control the roll drive motor based on the output signal.

Further, the work is extremely difficult to load such a large-diameter film roll, but when the unit for measuring the roll diameter as described above is attached to this type of apparatus, However, it is necessary to manually retract the measuring unit from the loading position each time the roll is loaded, which makes the loading work of the film roll even more difficult.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of such a problem, and its purpose is to automatically retract the film roll diameter measurement unit at the same time as the film roll loading operation, and perform the loading operation. It is to provide a new device that can be significantly reduced.

[0006]

[Means for Solving the Problems]

 That is, the present invention, as a moving operation device of a unit for measuring a film roll diameter for achieving such a problem, supplies a film having a swingable detection lever for measuring the winding diameter of the film roll in contact with the outer peripheral surface. The device is provided with a movable frame for supporting the film roll that can move up and down between the regular setting position and the film roll mounting position, and the movable frame acts on the detection lever at the film roll mounting position. A cam member for moving the detection lever in the direction of retracting from the loading area of the film roll is attached.

[0007]

【Example】

 Therefore, the embodiment illustrated below will be described. The drawings show an embodiment of the present invention configured as a device applied to a bag making and packaging machine.

In the drawing, reference numeral 1 is a pair of movable frames vertically movably mounted between a pair of fixed frames 2 through a slide mechanism. These movable frames 1 and 1 are integrally joined by a joint member 3. In addition, it is driven by a pair of actuating cylinders 4 acting on these coupling members 3 to set the regular set position, that is, the film supply position shown in FIG. It is configured to be able to move up and down between the roll loading position shown in (b).

A plate cam 5, which will be described later, is fixed to a part of the front surface of the movable frame 1, and a support shaft 6 for supporting a film roll 9 called an air shaft is laterally supported on this surface. Further, it is configured to be driven and rotated by a drive motor 7 via a drive force transmission mechanism including a pulley and a belt (not shown) arranged between the movable frames 1 and 1. The details of these mechanisms, the film transport mechanism, and the like are described in the specification of Japanese Patent Application No. 3-198863 filed by the applicant of the present invention, and therefore the description thereof is omitted here.

On the other hand, reference numeral 10 in the figure is a measuring unit for measuring the winding diameter of the film roll 9, and this measuring unit 10 includes a detection lever 11 pivotally attached to the upper end of the apparatus body frame 8 and the detection lever 11 of the detection lever 11. A roll diameter detection roller 12 provided at the lower end of the detection lever 11 is configured to include a potentiometer 14 that detects a rotation angle. It is configured so that the diameter can be measured.

By the way, the plate cam 5 on the movable frame 1 is used for retracting the measuring unit 10 from the film roll loading area C when the movable frame 1 is lowered to the position where the film roll 9 is mounted. The plate cam 5 is formed with an oblique outward cam surface 5a for contacting the cam follower 13 and moving the detection lever 11 outward as the movable frame 1 descends.

In the apparatus configured as described above, in order to load the film roll 9 which is now heavy, the axial center of the film roll 9 carried by a carriage or the like and the support shaft 6 are at the same height. Then, the movable frame 1 is lowered.

As a result, as shown in FIG. 2B, the plate cam 5 on the front surface of the movable frame 1 contacts the cam follower 13 with its cam surface 5 a and guides the cam surface 5 a to the outside to detect the detection lever 11. Is retracted from the loading area C of the film roll 9 so that loading is not hindered.

When the film roll 9 is loaded in this way, the movable frame 1 is pulled up to the regular set position by the operating cylinder 4. As a result, the plate cam 5 also rises together with the movable frame 1 as shown in FIG. 2 (a), releasing the cam follower 13 from the cam surface 5a and making the detection lever 11 swingable.

Therefore, regardless of the diameter of the film roll 9, the detection lever 11 brings the winding diameter detection roller 12 at the tip thereof into contact with the outer peripheral surface of the film roll 9 to measure the winding diameter without any trouble, and outputs it. The roll drive motor 7 is controlled based on the signal.

[0016]

[Effect of the device]

 As described above, according to the present invention, since the movable frame for carrying the film roll is arranged so as to be vertically movable between the regular setting position and the film roll mounting position, the movable frame is moved to the film roll mounting position. By lowering it, it is possible to easily load a heavy film roll to the set position, and a detection lever for measuring the roll diameter of the film roll at the film roll mounting position is mounted on this movable frame. Since a cam member that retracts from the frame is provided, it is possible to automatically retract the detection lever in conjunction with the lowering and lowering of the movable frame, making it easier to mount the film roll. it can.

[Brief description of drawings]

FIG. 1 is a perspective view of an apparatus according to an embodiment of the present invention.

2A and 2B are diagrams showing the operation of the above apparatus, wherein FIG. 2A is a diagram showing a regular set position, and FIG. 2B is a diagram showing a film roll mounting position.

[Explanation of symbols]

 1 Movable Frame 2 Fixed Frame 4 Working Cylinder 5 Plate Cam 6 Support Shaft 9 Film Roll 10 Measuring Unit 11 Detection Lever

Claims (1)

[Scope of utility model registration request] 1. A film supply device equipped with a swingable detection lever for measuring a winding diameter of a film roll in contact with an outer peripheral surface, and a film capable of moving up and down between a regular setting position and a film roll mounting position. A movable frame for supporting rolls is provided, and a cam member that acts on the detection lever at the film roll mounting position to move the detection lever in the direction to retract the detection lever from the loading area of the film roll is attached to the movable frame. A moving operation device for a film roll diameter measuring unit, which is characterized in that