JPS583805Y2 - Roll paper remaining amount detection pin - Google Patents

Description

[Detailed description of the invention] The present invention is a roll paper remaining amount detection device suitable for an automatic roll paper connection device for connecting roll paper for continuous use without stopping the roll paper usage machine. More specifically, it relates to the detection pin.

Utility Model No. 48-90646 as a roll paper end detection device
There is a publication.

In the device disclosed in the above publication, a detection lever is provided in the bobbin so that the detection portion protrudes from a perforation formed in the bobbin cylindrical surface, and is brought into pressure contact with the inner surface of the paper roll. When the pressure is released, the displacement of the detection lever is used to activate the signal device.

However, since the end of the roll paper in use, that is, the beginning of the pabin winding, is generally asymmetrical, it is disadvantageous to use the final end of the roll paper because it is likely to cause trouble. When feeding paper at such high speeds, the end of the paper is simulatively detected before it reaches the end.
An automatic connection to a new roll is advantageous.

In addition, as a method for detecting the fictitious end point in the middle of the roll by pulling out the roll paper,
There is a publication No. 4304.

According to this publication, when the roll paper is pulled out, the pin inserted at the planned position escapes from the roll paper, and the wire holding the pin is latched to the rotating shaft and swung around, causing detection. collision with the switch contactor to activate the signal device.

By the way, narrow thin paper is used for cigarette tipping paper.

In order for cigarettes to be accepted by consumers as a product with no defects, and because scratches and deformation of the thin paper part are fatal defects in the cigarette production process, extraneous external forces are applied to the chipping paper roll paper. This must be avoided as much as possible.

Under these circumstances, there has been a need for the development of an automatic signal device suitable for an automatic roll paper splicing device that eliminates the above-mentioned drawbacks associated with these known techniques and, on the other hand, for efficient production of cigarettes.

The present invention provides a novel detection pin suitable for the above-mentioned automatic connection.

According to the present invention, the detection pin is mounted with the pin head plane in contact with the end surface of the roll paper, and when the roll paper is pulled out at the predetermined position, the pin head is bent with a snap and attached to the pin head. The body of the following detection pin moves forward instantly,
Activates the detection switch contact.

Thus, the remaining amount detection signal of the roll paper can be reliably retrieved without applying any external pressure to the narrow roll paper made of thin paper, and therefore without the risk of damage or deformation.

The detection signal is then used to activate an automatic roll paper connection device, which is known per se.

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a portion of a cigarette manufacturing machine that feeds out a chip paper wrapper (roll paper) and includes an automatic connecting device of the present invention.

Support arm 2 fixed to base 1 of cigarette manufacturing machine
At the other end, the longitudinal center portion of the arm 3 is rotatably supported by a shaft 4, and on the arm 3, bobbin holders 5a and 5b and tension rollers 9a and 9 are mounted in opposite directions from the shaft 4, respectively.
b. Guide rollers 10ah and 10b are provided.

The arm 3 is rotatable clockwise in the drawing with a shaft 4 as a fulcrum, and can be stopped and fixed in a vertical direction as shown in the drawing at every rotational position of 180 degrees.

Bobbin holders 5a and 5bKH are loaded with roll paper 6a in use and new roll paper 6b, respectively.

A pressure roller 17, guide rollers 21a, 21b, 21c and 21d are provided on the path through which the roll paper 6a passes, and the guide roller 21a.

The buttons 21b, 21c and 21d are each rotatably supported on the base 1, and the pressure roller 17 is rotatably supported on the lever 16.

The lever 16 (7) is rotatably supported on the base body 1 by a shaft 15 fixed to the U lever 16 at one end, and has a cutting knife 19 provided with a knife at the other end.

A gear 14 is fixedly provided on the shaft 15, and the gear 14 meshes with the gear 13.

The gear 13 is fixedly provided on the shaft 12, and is connected to the shaft 12 (/'i
It is rotatably supported on the base body 1 and is provided as a shaft of the rotary lean lenoid 11.

A rubber roller 18 is rotatably provided on the base 1 at a position opposite to the pressure roller 17 with the paper band 6a in between, and a holder 20 of the cutting knife is mounted on the base 1 at a position opposite to the paper band 6a of the cutting knife 19. It is fixedly installed.

22 (I'i) is connected to a power source with a surface speed corresponding to the feeding speed of the band 6a, and 23 is a rubber roller that presses the band 6a against the feed roller 22, both of which are supported on the base 1. It is being

Details of the sensing pin/device are shown in FIGS. 2, 3, 4 and 5.

First, bobbin holder 5 (same as 5ab and 5b above).

) is fitted into a protruding shaft 31 fixed to the arm 3,
The other end of the shaft 31 is tightened with a nut (not shown) with an annular washer or the like interposed therebetween to prevent the bobbin holder 5 from falling off the shaft 31.

The bobbin holder 5 holds a roll paper 6 (same as 6a and 6b above).

The roll paper 6 is a band of paper of a predetermined width wound around a regular annular bobbin 62.

The bobbin holder 5 includes a disc 5 that comes into contact with the end surface of the roll paper 6.
1. The bobbin 6 is fitted into the shaft 31 and rotatably supported.
2 is inserted into the hollow shaft 52, a tightening screw 53 which is screwed to the other end of the hollow shaft 52 and has a conical portion 54 for tightening the bobbin 62 and determining the center position of the bobbin 62, and further a screw 53 on the opposite side of the disc 51. The disc 55 is fitted into the shaft 31 and rotatably supported on the side, a support 56 and a collar 58 connect and fix the disc 55 and the disc 51 together.

Furthermore, the bobbin holder 5 is provided with an operating pin T1 which is provided so as to be slidable back and forth through the disk 55 and to be elastically pressed leftward in the drawing with a spring 72 interposed therebetween. A head 73 having a conical portion 74 is provided at the right end, and a connecting plate 75 connecting the pin 71 and the detection pin 77 with a bolt 76 is provided at the other end.

The detection pin 77 has a threaded surface on the outer periphery, and has a structure that allows the connection plate 75 to be tightened to the detection pin 77 by passing it through an axial hole or a vertically long hole provided in the connection plate 75 and clamping it with the nuts 78a and 78b.
As shown in FIGS. 4 and 5, the left end of the button detection pin 77 has a pin head 80 that is rotatably supported by the pin 79, and the end surface of the pin head is attached to the roll paper 6. The connecting portion of the pin head 80 with the detection pin 77 is pressed into the hollow cavity 83 of the detection pin 77 by a spring 84. A resiliently held ball 85 is provided, and the end surface of the pin head 80 is provided with a V-shaped groove 86 and a single chevron-shaped slope 87 in contact with the ball 85.

With such a configuration of the detection pin, when a downward force is applied to the pin head 80, the pin head can be reliably snapped downward with a slight pressing blade, and the force is approximately 90°.
It is constructed so that it bends and stops.

Also, the pin head 80 (ri) which is bent downward can be snapped back into a straight line again with a slight force and restored.

The snap bending and stretching of the pin head 80 about the pin 73 changes the distance between the end surface of the roll paper 6 and the pin 79, so that the distance from the pin 79 to the V-shaped groove 86 edge is made smaller than that of the flat part 81. The operation pin 71 is configured to snap forward to the left together with the detection pin 71 by snap bending of the pin head 80, but the forward position is at the disk where the pin head 80 contacts the roll paper 6. A pedestal 57 is fixed to the disc 51 at a position opposite to the operating pin 71 so as to protrude from the surface of the disc 51 at an appropriate distance 1 and be stopped.

In this case, the pin head 73 may be locked to the disc 55 without using the stop pedestal 57 to set the appropriate protrusion distance.

Further, the pin head 80 is set through a hole 58 provided through the disk 51.

A microswitch 91 is fixed to the base 1 near the passage where the pin head 73 of the operating pin 71 rotates together with the bobbin holder 5, and a roller 93 is provided at the other end of the operating rod 92 extending from the microswitch 91. The head 73 of the operation pin 710 is rotatably provided and rotates together with the bobbin holder 5, and the roller 93 is brought into contact with the head 73 during the detection operation.

Reference numeral 24 in FIG. 1 is a microswitch for detecting the amount of paper remaining, which is fixed to the arm 3 so as to come into contact with the roll paper 6 from the side. actuated by disengaging the roll paper 6 and moving the substrate 1
A warning light 25 for detecting the remaining amount provided at an appropriate position is made to blink to notify the operator.

In the device configured as described above, the bobbin holder 5
The roll paper 6a loaded in the tension roller 9a
, pressure roller 17, guide rollers 21a, 21b,
21c and the feeding row 223, the cigarette is sent out to a cigarette manufacturing machine and used.

When the roll paper 6a is used with an appropriate residual size 1, the residual quantity detection microswitch 24 is activated and the residual quantity detection warning light 25 flashes to alert the operator that the time to replace the roll paper is approaching. Inform.

The operator loads a new roll paper 6b into the bobbin holder 5b, and moves the band paper 6b between the tension roller 9b and the guide roller 10.
For example, an adhesive tape 7 is pasted to the starting end of the band 6b with half of the adhesive surface protruding toward the starting end from the lower side of the band 6a in the figure, and the starting end including the adhesive tape 7 is With the sticky side facing upward, lock it on the rubber roller 18 and peel it off.

When the roll paper 6 is loaded into the bobbin holder 5, the second
As shown in the figure, the end surface of the roll paper 6 is brought into contact with the disc 51, and the hollow shaft 52 is straddled and locked with the tightening screw 53, and when the conical part 54 is fitted into the bobbin 62, the rotation axis is automatically centered. are aligned.

At this time, the detection pin 77Fi pin head 80 is made to extend linearly, and its end face flat part 81 is brought into contact with the end face of the roll paper 6 (see FIG. 6).

Therefore, the operation pin 71 is loaded in a state in which it presses the spring and protrudes to the right.

The roll paper 6 in the above state is attached to the arm 3 together with the bobbin holder 5, and is rotatably screwed to the shaft 31.

When the roll paper 6a has been consumed as planned, the inclined surface portion 82 of the pin head 80 slides along the side end surface of the roll paper 6a, and the pin head 80 is released from the side surface of the disk 51 by the spring 72. It protrudes instantly due to its elasticity.

Then, the pin head 80 is rotated by the rotation of the bobbin holder 5a.
When the pin head 80Fi comes into contact with the band 6a extending from the bobbin holder 5a to the tension roller 9a, a slight force is applied to the pin head 80Fi.
The disc 5 is bent in a right angle direction (see Fig. 7).
All of the parts protruding from the end face of 1 disappear.

At the same time, the head 73 of the operation pin 71 (since the position has moved toward the RI disk 55 side) rotates together with the bobbin holder 5a, engages with the head roller 93 of the microswitch 91, and presses the operation frame 92.

Here, even in the case where the pin head 73 comes into contact with the roller 93 immediately upon instantaneous movement, the operation frame 92 can be suppressed without any problem by providing the conical portion 74.

The rotary solenoid 11 is activated by an electric signal generated by the operation of the microswitch 91, and rotates the gear 13 fixed to the shaft 12. Rotate the lever 16 clockwise.

The pressure roller 17 provided on the lever 16 is the rubber roller 1
8, the adhesive tape at the tip of the new band 6b that is waiting on the rubber roller 18 is adhered, and the band 6a (/i is accompanied by the band 6b, but at the same time the cutting knife 1
9 is struck against the receiver 20, and the intervening band 6a is cut.

Since the old and new paper rolls are used continuously in the machine, the arm 3 is turned clockwise 180 degrees to remove the used bobbin and a new paper roll is loaded as described above. be.

The position of the detection pin 77 that comes into contact with the side surface of the roll paper 6 loaded in the bobbin holder 5 is determined as a device in which the inclined surface portion 82 of the pin head 80 is blocked by the side surface of the roll paper 6. However, since the roll paper 6 is normally set close to being used up, it is set near the outer peripheral surface of the bobbin 62, and its operating position can be easily adjusted by adjusting the length of the connecting plate 75. It will be done.

Further, the relative position of the detection pin device is adjusted to the optimum position by adjusting the length of the upper connecting plate 75, the mounting position of the connecting plate 75 by the holes 78a and 78b, and the protruding movement distance of the operating pin 71.

Note that if you want to switch to a new roll paper at an intermediate position in the middle of use, instead of using up the roll paper 6, set the detection pin 77 by extending the connecting plate 75 to a position toward the outside of the roll paper 6. There is no need to explain what you should do.

In order for the roll paper 6 to take a good relationship position with the base 1, for example, the length of the collar 58 is adjustable, or the length of the hollow shaft 5 is adjusted.
2, the disc 51 is provided so as to be adjustable back and forth, and the scale is regulated by the adjustment, which also requires no explanation.

The above-mentioned new and old banding paper bonding devices described crimping using an adhesive tape and a crimping roller and a rubber roller. In addition to hammering with metal, other methods can be freely adopted to achieve the purpose of the present invention.

As mentioned above, the present invention is such that the pin head of the detection pin device installed in the bobbin holder, which is pressed by a small force due to the decrease in the diameter of the roll paper, instantly protrudes at a set position, and the protruding pin head When the part comes into contact with the paper being fed out, it reliably snaps and bends with a small amount of force, and instantly withdraws, and at the same time, when the head of the operation pin moves at the moment mentioned above, the microswitch is activated to take out an electrical signal. , the band gluing device and the band cutting device in use can be activated.

Moreover, it can be operated reliably by instantaneous operation, and because it operates reliably with a minute force, it does not damage the band, has a simple structure, is inexpensive, and can operate reliably.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatic connecting device showing an embodiment of the present invention, Fig. 2 is a partial cross-sectional view taken along the arrow A-A in Fig. 1 showing the structure of the bobbin holder, and Fig. 3 is the same as Fig. 2. Figure 4 is an enlarged partial cross-sectional view of the detection pin, and Figure 5 is the same partial cross-sectional view as Figure 4, showing the pin head in operation. Figure 6 shows the state in which
FIG. 7 is a front view of a portion of FIG. 5; 5...Bobbin holder, 6...Roll paper, 11...Rotary solenoid, 16...
... Lever, 17 ... Pressure roller, 18.
...Rubber roller, 19...Cutting knife,
20...Cash receipt, 71...Operation pin, 7
7...Detection pin, 80...Pin head,
91...Micro switch.

Claims (1)

[Scope of utility model registration request] 1. The detection pin is supported by a bobbin holder that holds the roll paper and rotates with the roll paper, and the detection pin has a pin head that has a flat part 81 that comes into contact with the side surface of the roll paper and an inclined surface part 82 that follows the flat part 81. 80 and the pin head 80
a detection pin portion 77 that snap-bendably supports the detection pin portion 77; an operation pin portion 71 connected to the detection pin portion 77; a spring 72 that elastically presses the operation pin portion 71 against the side surface of the roll paper; A roll paper remaining amount detection pin characterized in that the other end is provided with an actuation head 73 facing a contact for actuation of a detection switch. 2. The detection pin part 77 with the pin head 80 is connected to the connecting plate T5
The residual amount detection pin for roll paper according to item 1 above, wherein the pin is coupled to the operation pin portion 71 via the pin. 3. The pin head 80 is rotatably supported on the detection pin 77 via a pin 79, and the end surface of the pin head 80 has a V-shaped groove 86 and a chevron-shaped protrusion 87, and comes into contact with this. The roll paper remaining amount detection pin as described in item 1 above, characterized in that a ball 85 is elastically held by a spring 84 and housed in a hollow cavity 83 provided in the detection pin 77.