JPS6312960Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hot wire cutter actuating device, and in particular, like a booklet back pasting machine, adhesive is applied to one side of the tape, sent to the pasting position, and cut at a predetermined length position. The present invention relates to a hot wire cutter actuating device suitable for use in various machines having processes.

As described above, when cutting a tape coated with adhesive on one side using a hot wire cutter, the hot wire cutter is kept in a heated state at all times and moves toward the tape during cutting to guide the cutting.

However, this kind of conventional hot wire cutter cuts the tape by moving at a constant speed over a certain stroke, so if you try to increase the number of tapes attached per unit time and shorten the time required for the hot wire cutter to move up and down, The speed at which the cutter cuts the tape increases, causing problems such as poor cutting due to heat, and if the stroke of the hot wire cutter is shortened to cope with the increase in speed, the gap between the tape and the hot wire cutter becomes narrower. As a result, the heat from the hot wire cutter during the waiting period heats the adhesive coated surface of the tape and dries the adhesive, weakening the adhesion force of the tape fed after cutting and making it impossible to achieve good back adhesion. A problem arises.

In view of this, the present invention was developed by placing the hot wire cutter in a remote position so as not to affect the tape when it is on standby, approaching a position close to the tape at the same time as the tape is supplied, and waiting at the same time as the tape stops. The tape is further moved to thermally cut the tape, which greatly reduces the travel time of the hot wire cutter compared to the conventional method that cuts the tape all at once from the waiting position, making it fully capable of handling high-speed cutting. In addition, it is an object of the present invention to provide a hot wire cutter operating device that prevents the tape from being affected by heat during the standby period of the hot wire cutter.

Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.

The figure shows an embodiment in which a cutter arm 2 supporting a hot wire cutter 1 is directly actuated by a cam 3. The hot wire cutter 1 is supported by a cutter holder 4 at the tip of the cutter arm 2, and this cutter arm 2 is A portion near the base is pivotally supported on the body side by a shaft 5.

A cam follower 6 is installed at the base of the cutter arm 2.
is rotatably supported, and the cam follower 6 is brought into contact with the cam surface of the operating cam 3 under the bias of a spring 7.

The actuating cam 3 has a standby area 8 having the same radius and extending approximately half a circumference, a proximal area 9 that stands up on the rotational direction side of the standby area 8 and has the same radius over a required range, and It has a cutting area 10 that stands up on the rear side in the rotational direction of the area 9 and has the same radius over a required range, and the rear side of the cutting area 10 in the rotational direction is the waiting area 8.
It follows.

A switch actuator 12 is provided on the shaft 11 of the operating cam 3 so as to rotate in synchronization with the cam 3, and on the circumferential surface of the switch actuator 12 there is provided an actuator for actuating a switch SW fixed to the aircraft body. Two recesses 14 and 15 that do not press the piece 13, that is, turn off the switch SW, are provided adjacent to each other.

In the figure, reference numeral 16 indicates a tape, and reference numeral 17 indicates a receiving groove when the hot wire cutter 1 cuts the tape 16.

Next, the operation of the above embodiment will be explained.

When the present invention is used for cutting tape for pasting the back of a booklet, one booklet is fed to the back pasting machine, and when the leading edge of the booklet is detected, the tape 16 is fed by a feeding mechanism (not shown). At the same time, the actuating cam 3 is rotated in the direction of the arrow, and its proximal region 9 pushes the cam follower 6, causing the cutter arm 2 to rotate clockwise in the figure about the shaft 5. As a result, the hot wire cutter 1 at the tip of the cutter arm 2 approaches a position close to the tape 16.

When the cam follower 6 rides on this proximity area 9, the recess 14 of the switch actuator 12
When the switch SW reaches the position of the operating piece 13 of the SW, the switch SW is turned off and the rotation of the operating cam 3 is stopped.

When the booklet moves forward and the trailing edge of the booklet is detected, the signal stops the supply of the tape 16 and at the same time the actuating cam 3 is restarted, and its cutting area 10 further pushes the cam follower 6 to further move the cutter arm 2. Rotate clockwise so that hot wire cutter 1 is attached to tape 1.
6 and enters the receiving groove 17, and the tape 1
Cut 6.

The operating cam 3 continues to rotate, and when the cam follower 6 leaves the cutting area 10, it immediately moves to the waiting area 8.
, and the cutter arm 2 is moved counterclockwise by the spring 7.
The hot wire cutter 1 is moved to a position where it does not have a thermal effect on the tape 16 by swinging greatly due to the urging force. In the meantime, the switch SW is turned off by the recess 15,
The signal causes the operating cam 3 to stop rotating and waits until the next booklet is fed.

In the illustrated embodiment, a single cam is used to perform the above operations, but a plurality of cams are used, and each cam performs standby, approach, and
Each cutting operation may be performed.

As explained above, the present invention is for cutting tape using a hot wire cutter, in which the hot wire cutter is supplied from a standby position where the tape is not affected by heat, and is brought close to the tape while cutting is required. Since the structure is such that the hot wire cutter operates stepwise between the close position where the tape is moved and then stopped, and the tape cutting position, even when performing high-speed cutting, the hot wire cutter only needs to operate the distance traveled from the close position to the cutting position. , Therefore, the time required for movement is extremely short, and it is possible to cope with high-speed cutting. In addition, during the waiting period after cutting, the tape is placed at a position far away from the tape, so even if adhesive is applied to the tape, it does not dry out, which is an excellent effect.

[Brief explanation of drawings]

The figure is an explanatory diagram showing an embodiment of the present invention. 1...Hot wire cutter, 2...Katsuta arm, 3...
...Operating cam, 6...Cam follower, 8...Waiting area, 9...Proximity area, 10...Cutting area, 12...
...Switch actuator, 14, 15...Recess, 16...
…tape.

Claims (1)

[Scope of utility model registration request] The middle part of a cutter arm that supports a hot wire cutter is pivotally supported at its tip, and a cam follower is pivoted to the base of this cutter arm, and this cam follower is always in contact with the cam surface of an operating cam by a spring bias. A waiting area that extends approximately half a circle in radius,
It rises at the rear side of this waiting area in the direction of rotation,
It has a proximal area having the same radius over a required range, and a cutting area that stands up on the rear side of the proximate area in the rotational direction and has the same radius over the required range, and when the hot wire cutter is waiting, the cutting area is cut. The tape is placed in a remote position that does not have a thermal effect on the tape, and is placed close to the tape when the tape is supplied, and when the tape is cut, moves to the tape side and returns to the waiting position after cutting. A hot wire cutter actuating device characterized by: