JPH0512194Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention automatically splices the prepared roll paper and replenishes it continuously without stopping the paper feed when replenishing roll paper for printing etc. Regarding automatic paper splicing, in order to make the series of operations such as brushes and blades during paper splicing extremely quick and economical, the operating system combines rolling rollers and cams, and the steps of the cams are used to make the movements more impactful. The present invention relates to an automatic paper splicing structure that is extremely fast, drives both the brush and blade with one shaft and one drive source, and is economical.

[Conventional technology]

A typical automatic splicing structure is shown in FIG.

That is, FIG. 3 is a front configuration diagram of main parts showing an example of the conventional one, in which 1 is a roll paper, 2 is a preparation roll paper, 4' is a brush, 5'' is a spring, 11' is a blade, 1
4 is an arm, 15 is a cylinder, 16 is a solenoid, 16 _-a is an iron core, 16 _-b is a coil, 16 _-c is a rod, 17 is an arm, and 18 is a double-sided adhesive tape.

In FIG. 3, a preparatory roll paper 2 is placed on the left side of the roll paper 1 in use with a slight gap. A double-sided adhesive tape 18 is applied in advance to the paper outlet portion of the outer diameter portion of the preparation roll paper 2 to the full extent in the width direction. Further, on the right side of the roll paper 1, a brush 4' having the full width of the roll paper 1 is arranged approximately in the center of the preparation roll paper 2 with a gap. And the brush 4' is connected to the arm 14.
The other end is rotatably supported,
A piston shaft of a cylinder 15 serving as a driving source is rotatably supported in the intermediate portion by a pin or the like.

In addition, a blade 11' is used for cutting the roll paper 1.
are arranged with a slight gap from the roll paper 1. The blade 11' is attached to the tip of the arm 17, and the other end is rotatably supported.
A solenoid 16 as a source of movement in the cutting direction of the blade 11' is disposed near the arm 1'.
A spring 5'' is attached to the vicinity of the other end of the blade 11' as a source of return motion of the blade 11'.The arm 17 drives the iron core 16-a by energizing and de-energizing the coil 16 _-b of the solenoid ₁₆ . However, the rod 16 _-c is formed integrally with the iron core 16 _-a .

Next, the operation of the automatic paper splicing structure constructed as described above will be explained.

When the roll paper 1 is fed out and only a small amount remains, the preparation roll paper 2 to which the double-sided adhesive tape 18 has been pasted is rotated in the same direction as the paper feeding direction indicated by the arrow, so that the roll paper 1 and the roll are the same. put.

With the above steps, the preparation for automatic paper splicing is completed, and when a paper splicing command is given in this state, the diameter of the double-sided adhesive tape 18 attached to the outer diameter of the preparation roll paper 2 (not shown) is In order to detect the position in the direction and to synchronize the timing of the push operation of the brush 4' with the position of the double-sided adhesive tape 18, an operation signal is sent from a control unit storing a pre-input program to the cylinder 15. The output is applied to a controlling electromagnetic valve to drive the cylinder 15 and move the brush 4' to the left. By this,
The roll paper 1 being sent out is moved to the left side, and the roll paper 1 touches the outer peripheral surface of the preparation roll paper 2. There is a double-sided adhesive tape 18 at the touched location, and the paper roll 1 is joined to the preparation roll paper 2 by this tape. After a slight delay from this touch operation, operating power is sent to the coil 16 _-b of the solenoid 16, and the blade 11' is moved to the left by the rod 16 _-c .
Cut the roll paper 1 that has been being sent out so far. The automatic paper splicing operation is now complete, and the tapered roll paper 1
is removed, a new preparation roll is loaded, and it stands by at the next required position.

[Problem that the invention attempts to solve]

However, the automatic paper splicing structure constructed as described above has the following major problems.

That is, the width of the roll paper 1 is generally 1 m or more, and the widths of the brush 4' and the blade 11' are also correspondingly large, resulting in a considerable mass. In addition, since the feeding speed is extremely fast at approximately 10 m/s, double-sided adhesive tape 1
The series of operations after detecting the position of 8 requires extremely high speed and accuracy. Therefore, brush 4' and blade 1
In order to operate 1' at high speed, a large force and a highly instantaneous operation are required. However, in order to generate a large force, the problem can be solved by increasing the capacity of the cylinder 15 and solenoid 16, but at the same time, the mass of the moving parts such as the piston part and the iron core part increases, and the instantaneous acceleration performance is affected by itself. It doesn't get very fast because it spends its mass accelerating. Furthermore, it is known that the rise of air pressure in the cylinder 15 is generally slow and lacks instantaneousness. Therefore, there is a limit to the operating speed of the brush 4' and the blade 11', and as a result, the timing of the paper splicing operation at high speeds is off, resulting in poor paper splicing and paper cuts that are not cut neatly in a straight line and are pulled apart. There were problems such as zigzag in the feeding direction.

The present invention was devised in view of the above-mentioned points, and its purpose is to provide excellent paper splicing and instantaneous movement of the blade at high speeds, eliminate paper splicing failures without shifting the timing, and eliminate paper splicing defects. To provide an automatic paper splicing structure that can be cut neatly.

[Means for solving problems]

In other words, the means to achieve this purpose is to attach a strong spring to each of the brush and blade to move them in the direction of paper splicing and paper cutting, and to create a gap between them and the roll paper in this state. The rolling roller and cam are combined and stopped via an arm, and the cam is rotated by a movement command. By removing the aforementioned strong spring force stopper, the brush and blade are moved using the step in the cam shape. To provide an automatic paper splicing structure configured to simultaneously obtain a large force and a highly instantaneous motion by moving the motion instantaneously in a required motion direction in an impactful manner.

[Effect]

Its operation will be explained in detail based on the drawings of the embodiment.

〔Example〕

FIG. 1 is a front configuration diagram of essential parts showing an embodiment of the automatic paper splicing structure of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. Preparation roll paper, 3 is a roller shaft, 4 is a brush, 5, 5' is a spring, 6 is an arm, 7, 7' are rollers, 8, 9 are cams, 10 is an arm, 11 is a blade, 12 is a motor, 1
3 is a stopper, and 18 is a double-sided adhesive tape.

In FIGS. 1 and 2, a preparation roll paper 2 is placed on the left side of the roll paper 1 in use with a slight gap. This preparation roll paper 2
A double-sided adhesive tape 18 is applied in advance to the entire width direction of the paper outlet portion on the outer diameter portion of the paper sheet. Also, on the right side of the roll paper 1 when facing the paper surface, there is a brush 4 that extends over the entire width of the roll paper 1 and is located approximately at the center of the preparation roll paper 2.
are arranged with gaps between them.

The brush 4 is fixed to one side of an L-shaped arm 6, and a roller 7 equipped with a rolling bearing is attached to the other side.
is rotatably supported, and its bent corner is rotatably supported. Further, a spring 5 is provided so that the brush 4 can constantly move in the paper splicing direction shown by the arrow to perform paper splicing, and this spring 5 presses the brush 4.

Further, in this state, since the brush 4 always presses the roll paper 1, the cam 8 that regulates the position of the roller 7 is in contact with the roller 7 in order to create a gap between them. The shape of the cam 8 is such that a step A is attached to a part of the outer circumference, and when the roller 7 is located at the maximum outer diameter of the cam 8, there is a gap between the roll paper 1 and the brush 4, and from that position clockwise. The outer diameter gradually decreases until it reaches the step A.

Furthermore, this cam 8 is connected to a motor M with a brake B as a drive source to constitute a brush drive system.

On the other hand, the blade 11 is similarly arranged on the right side of the roll paper 1 with a slight gap therebetween.

The blade 11 is fixed to one side of the L-shaped arm 10 with a bolt or the like, and a roller 7' equipped with a rolling bearing is rotatably supported on the other side. has been done. Further, a spring 5' is provided so that the blade 11 can constantly move in the paper cutting direction indicated by the arrow to perform cutting, and this spring 5' presses the blade 11.

Further, in this state, since the blade 11 always presses the roll paper 1, the cam 9 which regulates the position of the roller 7' is in contact with the roller 7' in order to create a gap between the blades 11 and the roll paper 1. The shape of the cam 9 is the same as that of the cam 8, but in order to create a time difference with the brush 4, the position of the step A' of the cam 9 is shifted from the position of the roller 7' to create the required time difference. It is mounted coaxially. The cams 8 and 9 are provided with slits so that the time difference between the cams 8 and 9 can be adjusted as desired, and are fixed with a stopper 13. Furthermore, the purpose is achieved with one motor 12 as a driving source for two different types of cam operations.

Next, the operation of the automatic paper splicing structure constructed as described above will be explained.

When there is only a little remaining roll paper 1 being sent out, the preparation roll paper 2 to which double-sided adhesive tape 18 has been attached in advance is rotated in the same direction as the paper feed to keep the circumferential speed the same. This completes the preparation for automatic paper splicing.
When a paper splicing command is given in this state, the radial position of the double-sided adhesive tape 18 attached to the outer diameter of the preparation roll paper 2 is detected (not shown), and the pushing operation of the brush 4 is detected. Double-sided adhesive tape 18
The operation signal is output so that the position timing of the
As a result, the motor 12 rotates clockwise, the cam 8 holding the roller 7 moves to the stepped portion, and the brush 4 moves with an impact. That is, by increasing the strength of the spring 5, the desired force can be obtained, and the force that returns this force to the original position is generated by the rolling of the roller 7, which has rolling bearings, on the gentle slope of the cam 8, so that the motor 12, which has an extremely small capacity, is However, if the distance between the position of the roller 7 and the step A of the cam 8 is made small, the instantaneous time will be shortened, so even if the force is increased as in the conventional one shown in Fig. No mass is wasted accelerating. Therefore, the increased force is effectively used to accelerate the brush 4, so that extremely instantaneous and reliable operation can be obtained.

Then, by pressing the roll paper 1 with this brush 4, since the double-sided adhesive tape 18 has been pasted on the preparation roll paper 2 in advance, paper splicing is performed, and after a slight time difference, the paper is connected to the blade 11. Adjust so that the roller 7' falls to the lower position of the step A' of the cam 9. Since the cam 9 is arranged coaxially with the drive source of the brush 4 with a required time difference, the blade 11 that cuts the roll paper 1 accurately operates, and the roll paper 1 is cut off and automatically spliced. The operation is complete.

[Effect of idea]

As explained above, according to the present invention, even if there is an increase in force as in the past, it is spent accelerating the mass of the object itself, impairing the instantaneousness, and in addition, the operation speed is slow due to poor air rise. Various problems such as these have been resolved. That is, the necessary operating sources for the brush 4 and the blade 11 are the extremely light springs 5 and 5';
This can be as powerful as it gets, giving you the power you need. Also, since the rollers 7 and 7' having rolling bearings in the cam part are in rolling friction motion, the springs 5 and 7' have rolling bearings.
Even if a force of 5' is applied, the friction loss is small,
Since the instantaneous action is achieved by utilizing the step between the cams 8 and 9, it becomes extremely fast and impressive.Moreover, only one motor 12 is required as the drive source for the brush 4 and the blade 11. This is an extremely useful automatic paper splicing structure that does not require a driving source and uses the inclination of the cams 8 and 9, so the rotational force is small and the capacity is small, making it rational and economical. It is the body.

[Brief explanation of the drawing]

Fig. 1 is a front configuration diagram of essential parts showing one embodiment of the automatic paper splicing structure of the present invention, Fig. 2 is a sectional view taken along the line A--A in Fig. 1, and Fig. 3 is an example of the conventional structure. FIG. 2 is a front configuration diagram of main parts shown in FIG. 1... Roll paper, 2... Preparation roll paper, 4,
4'...Brush, 5,5',5''...Spring, 6,10,
14, 17... Arm, 7, 7'... Roller, 8,
9...Cam, 11, 11'...Blade, 12...Motor, 18...Double-sided adhesive tape.

Claims (1)

[Scope of utility model registration request] When replenishing roll paper for printing, etc., the roll paper being fed out is attached to the preparation roll paper in a structure that automatically splices and continuously replenishes the preparation roll paper without stopping paper feeding. an arm fixed to a brush that presses against the double-sided adhesive tape, one end of which is rotatably supported, and a roller with a rolling bearing at the other end; an arm fixed to a blade which cuts the roll paper during delivery after being applied to the prepared roll paper; one end of this arm is rotatably supported; the other end is a roller with a rolling bearing; , the roller and two coaxial rollers in contact with this roller.
The present invention is characterized by an integral structure including a seed cam, a drive source for driving the cam, and a spring that allows the arm to constantly move in the direction of paper splicing and paper cutting, so that the brush and blade are returned by the cam. Automatic paper joining structure.