JPS6238228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention intermittently delivers a continuous pouch body in which pouch portions and seal portions are alternately provided by storing powdered, granular, etc. articles and sealing them at regular intervals. This invention relates to a detection device installed in a processing device for continuous pouches that are cut and separated during stoppage and sent to the next process.

Conventionally, in such a device, a roller is pressed against a moving continuous pouch body, the roller is rotated as the continuous pouch body moves, and this roller drives a pulse transmitter, which is proportional to the moving length of the continuous pouch body. A method has been proposed in which the cutter of the cutting section is operated at every fixed pulse by generating a pulse, but in practice, the cutting section gradually shifts due to the accumulation of errors and cuts parts other than the sealing section. It is not practical as there is a risk of

The object of the present invention is to obtain a detection device that does not accumulate errors like the conventional detection device described above.

That is, the present invention provides a pair of upper and lower movable thickness detection rollers, and also uses a pulse generator to detect the feeding length of the continuous pouch bodies and to detect the boundary of the continuous pouch bodies. The cutting section operates only when the following conditions are met, thereby eliminating cumulative errors.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the feed amount detection device of the present invention will be explained below based on an embodiment shown in the accompanying drawings.

In FIGS. 1 and 2, 1 is a frame with a guide roller 2 provided on the upper side of the frame, and a pouch packaging device (not shown) is used to pack powdery or granular items such as desiccant into bags. Continuous pouch bodies 3 sealed at regular intervals are supplied as shown by the arrow. In FIG. 1, the continuous pouch body 3 is shown by one solid line,
In reality, as shown in FIG. 4, pouch portions 4 in which granular articles are packaged are connected by seal portions 5.

6 in FIGS. 1 and 2 is a vibrator consisting of two rods, and this vibrator 6 is vibrated from side to side by a drive device 7, giving vibration to the pouch body 3 passing between the vibrators 6, and causing the inside of the pouch portion 4 to vibrate. It serves to store the articles in the lower part and to make the change in thickness between the seal part 5 and the pouch part 4 clear.

8 is a support plate attached to guide rails 9 on both sides of the upper part of the frame 1 so that it can be raised and lowered; 10 is a vertical adjustment screw 10 that is attached to bearings at the top and bottom of the rear upper part of the frame 1 so that it can be rotated and moved up and down; A part of the threaded cylinder 11 of the support plate 8 is screwed onto the screw 10, and by turning the screw 10, the vertical position of the support plate 8 can be adjusted.

Reference numeral 12 denotes a thickness detection section provided on the support plate 8. As shown in FIG. 3 and FIG.
Upper and lower movable thickness detection rollers 1 facing 4 and 15
6 and 17, and detection switches 18 and 19 for detecting the positions of the respective rollers 16 and 17. 2
Reference numerals 0 and 21 denote a pair of levers that are attached to swing independently on shafts 22 provided on the support plate 8. The detection roller 16 is attached to the tip of one of the levers 20, and the rear end is attached to the lever 20 for the action of the switch 18. When the rollers 14 and 16 are in contact with the seal portion 7 and the gap between the rollers 14 and 16 is narrow, the switch 18
is turned ON, and when the space between the rollers 14 and 16 is pushed apart by the pouch portion 4, the switch 18 is turned OFF.

A detection roller 17 is attached to the tip of the lever 21, and the rear end is placed opposite to the operating piece of the switch 19. When the rollers 15 and 17 are in contact with the seal portion 7 and the distance between the rollers 15 and 17 is narrow, the switch 19 is turned on. ,
When the space between the rollers 15 and 17 is expanded by the pouch portion 4, the switch 19 is turned OFF.
Note that each switch 18, 19 is fixed to the support plate 8 with a suitable bracket.

A feed amount detection section 23 is provided above the thickness detection section 12 as described above. This detection part is the detection roller 2
4 and a press roller 25 that presses the continuous pouch body 3 against this roller 24. The roller 24 drives a pulse generator 26, and the press roller 25 has its upper end attached to the lower end of a swinging piece 27 attached to the frame 1 by a shaft. The roller 2 is attached by a spring (not shown).
5 is pressed against the pouch body 3. The rollers 24 and 25 sandwich the seal portion on one side of the pouch 3 to minimize the influence of changes in the thickness of the pouch 3.

In FIG. 1, 28 is a receiving roller attached to the frame 1, and 29 is a sticking roller facing the roller 28, which is pressed by a spring or the like.

Reference numeral 30 in FIG. 1 is a roll shaft of double-sided tape, and the double-sided tape 32 pulled out from two reels 31 attached to the front and back of this roll shaft 30 passes through guide rollers and is connected to a roller 29 and a pouch as shown in FIG. body 3
As shown in FIG. 6, it is stuck to the pouch body 3 in parallel by an intervening roller 29.

The two separators 33 separated from the two adhesive tapes 32 stuck to the pouch body 3 in this way are the fifth
Separated into upper and lower parts by guide rollers 34 as shown in the figure,
As shown in FIG. 1, it is wound onto upper and lower take-up reels 35.

Reference numeral 36 in FIG. 1 denotes a pair of feed rollers, one of which is rotatably attached to the frame 1 and driven intermittently by a motor M. Both rollers 36 have large diameters on both sides as shown in FIG. 2, and are driven by sandwiching the seal portions on both sides of the pouch body 3. Also,
Both rollers 36 are interlocked by gears, and the other roller 36 is pushed toward roller 36 by a spring.

Reference numeral 37 in FIG. 1 denotes a cutting section, which is composed of a fixed cutter 38 and a rotating cutter 39, and the fixed cutter 38 is attached to a bracket 40 so as to be adjustable. The rotary cutter 39 is fixed to a rotating shaft 41 attached to the frame 1, and this rotating shaft 41 is rotated by a drive device 42 such as a motor. When a cutting signal is received, this drive device 42 rotates the rotating shaft 41 once. It is then stopped. However, the cutting section 37 may be of another type, such as using a movable blade that moves forward and backward.

Reference numeral 43 in FIGS. 1 and 7 is a chute for dropping the pouch 44 cut by the cutters 38 and 39, and is fixed to the lower front of the frame 1. A groove is provided in this chute 43 so that the tape 32 does not come into contact with it, and a shutter 46 that is opened and closed by an air cylinder 45 is provided at the lower end of this chute 43, and above that, a shutter 46 is provided.
An air nozzle 47 for blowing the pouches above 6 forward is provided.

Reference numeral 48 in FIG. 1 is an air cylinder provided at the lower front side of the frame 1, and an elevating frame 50 is fixed to the lower end of the piston rod 49, and the upper end of the swinging frame 51 is attached to this frame 50 by a shaft 52. A suction cup 53 facing toward the chute 43 is provided at the lower end of the swing frame 51, and the suction cup 53 is connected to a communication portion 54 provided on the swing frame 51, a flexible hose 55, and a switching valve (not shown). Connect to the suction port of the pump.

Reference numeral 56 in FIG. 1 is an air cylinder attached to the lifting frame 50, and this cylinder 56 connects its downwardly projecting piston rod 57 to the forward facing arm 58 at the upper end of the swinging frame 51. It is something that makes you oscillate.

Note that if the vertical width of the seal portion 5 is B as shown in FIG.
If the distance between the seals 7 and 7 is B/2, and the distance between the upper and lower seal parts 5 is A, then the pulse counter that receives the pulses transmitted from the pulse transmitter 26 will have the number of pulses corresponding to A - α, that is, the lower limit value. When detecting a value between X and the number of pulses corresponding to A + α, that is, the upper limit value Y, a cutting enable signal is generated, and when the upper limit value X is generated, it returns to 0, and α is the number of pulses corresponding to A Set to 1/2 of the number of pulses corresponding to length B.

The device having the detection device of the present invention has the above configuration, and its operation will be explained below.

The feed amount of the continuous pouch body 3 descending through the guide roller 2 is detected by counting the number of pulses from the pulse transmitter 26 using a pulse counter, but if the detected value is between the lower limit value X and the upper limit value Y At some point, a signal indicating that cutting is possible is sent to the control section of the rotary cutter 39, but the cutter 39 is not activated by this signal alone.

On the other hand, when the thickness detection roller 17 reaches the middle of the seal part 5, the upper thickness detection roller 16 rides on the lower part of the upper pouch part 4, so the switch 18 turns OFF and the switch 19 remains ON. A signal is sent from the cutter 39 to the control section of the cutter 39. That is, when the count number of the counter is between the lower limit value X and the upper limit value Y, the thickness detection roller 16
At the same time, the feed roller 3 rides on the pouch portion 4.
6, 36 stop and the continuous pouch body 3 stops, the rotary cutter 39 rotates once, cuts the seal portion 5 as shown in FIG. Double-sided adhesive tape 32 is attached to the pouch 44, but the shoot 43
Since the bag 44 is provided with a groove so as not to come into contact with the tape 32, the bag 44 slides down the chute 43 and is stopped by a shutter 46 as shown in FIG. Under the condition that the pouch 44 is received by the shutter 46, the switching valve provided on the hose 55 is switched and the suction cup 53 is placed in the pouch 44.
As shown in FIG.
away from.

Next, the shutter 46 is retracted by the action of the cylinder 45, and at the same time the cylinder 48 is activated, and the piston rod 4
9 descends together with the swing frame 51 and enters the large bag 59 waiting below as shown in Fig. 9, and then the air cylinder 56 acts to rotate the swing frame 51 as shown by the solid line in Fig. 9. , the small bag 44 is adhered to the inner surface of the large bag 59 with the tape 32.

Thereafter, by switching the switching valve, the hose 55 is communicated with the atmosphere, the suction cup 53 is separated from the pouch 44, the elevating frame 51 returns to the position shown by the chain line by the action of the cylinders 56 and 48, and the piston rod 49 also rises, so that the elevating frame 51 also moves to the first position.
Returning to the position shown in the figure, the shutter 46 also advances to the front of the chute 43, the feed rollers 36, 36 are activated to begin feeding out the continuous pouch body 3, and the pulse counter starts counting from 0.

The above example shows a case where two double-sided adhesive tapes are pasted on the left and right sides of the continuous pouch body, then cut and pasted inside the large bag, but one double-sided adhesive tape is placed in the center of the continuous pouch body. Alternatively, two single-sided adhesive tapes may be pasted half on the left and right sides of the front of a continuous small bag body, and the exposed parts may be used to paste on the large bag. However, the present invention can be applied to devices other than the device for pasting a pouch onto the inner surface of a large package.

The present invention relates to a detection roller that rotates in contact with continuous pouches in a device that feeds and cuts continuous pouches containing powdery or granular articles in pouches connected at regular intervals at a fixed pitch as described above. The number of pulses emitted from the pulse transmitter driven by is counted, and the upper detection roller of the pair of upper and lower thickness detection rollers rides on the lower part of the upper pouch section, and the lower detection roller rides on the upper pouch section. By detecting the boundary between the seal part and the pouch, the seal part was always located at the cutting part when the two conditions matched, so there was no chance that parts other than the seal part would be cut due to accumulation of errors. The fear disappears. Furthermore, since the detection of the pouch is performed by the detection roller, there is no risk of damaging the pouch unlike in the case of detection using a thin wire.

[Brief explanation of the drawing]

Fig. 1 is a partially longitudinal front view of a processing device for continuous pouch bodies implementing the detection device of the present invention, Fig. 2 is a partially longitudinal side view of the same as above, and Fig. 3 is an enlarged cross-sectional plane taken along the line shown in Fig. 1. Figure 4 is an enlarged front view of the thickness detection section, Figure 5 is an enlarged front view of the tape attachment section, Figure 6 is an enlarged partially cutaway perspective view of a continuous pouch body with tape attached, and Figure 7. is an enlarged front view of the feeding roller and the vicinity of the cutting part, Fig. 8 is a partially enlarged longitudinal front view of the vicinity of the lower end of the chute, Fig. 9 is a partially enlarged front view of the pouch pasting part,
FIG. 10 is a front view showing the relationship between the length of the continuous pouch body and the thickness detection roller. 3... Continuous pouch body, 4... Pouch portion, 5... Seal portion,
12... Thickness detection section, 16... Movable thickness detection roller,
23... Feed amount detection unit, 26... Pulse transmitter, 36
...Feed roller, 37...Cutting section.

Claims (1)

[Claims] 1. A feed roller that intermittently sends downward a continuous pouch body in which pouch parts and seal parts are alternately provided by storing powdered, granular, etc. articles and sealing them at regular intervals, and stopping the continuous pouch body. The apparatus for processing continuous pouches includes a cutting section for cutting the seal portion, and a thickness detection section having a pair of upper and lower movable thickness detection rollers for detecting a difference in thickness between the seal portion and the pouch portion of the continuous pouch body. and a feed length detection section having a pulse transmitter that transmits a pulse proportional to the amount of movement of the continuous pouch body, and the feed length detection section detects a distance within a range of ±a of the interval A between the seal portions of the continuous pouch bodies. The conditions under which internal movement was detected, and the upper detection roller of the thickness detection section running over the lower part of the upper pouch section, and the lower detection roller not running over the lower part of the upper pouch section, caused the seal section of the continuous pouch body to overlap with the pouch. A detection device for a continuous pouch body configured to operate the cutting part to cut a sealed part of the continuous pouch body under conditions in which a boundary between the continuous pouch bodies is detected.