JPH0340384Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a box gluing device having a main body and a flap adhered to the main body.

``Prior Art'' Conventionally, a gluing device includes a box having a main body and a flap bonded to the main body, a conveyor for conveying the box, and a detector for detecting the presence or absence of the box. A control device that operates a gluing mechanism upon receiving a signal and causes the gluing mechanism to apply glue to a desired position on the bonding surface between the main body portion and the flap portion; a bending member for bending the pasting section and adhering it to the main body; a drive mechanism for moving the gluing mechanism upstream in the transport direction of the boxes when the transport conveyor stops abnormally; It is known that the flap is equipped with a press-contact mechanism for press-contacting the flap part to the main body (Japanese Patent Application Laid-open No. 14966-1496).
issue).

In the gluing device having the above configuration, when the conveyor is abnormally stopped while the gluing mechanism is applying glue to the box, the above control is performed instead of the conveyor conveying the box. The drive mechanism is operated by the device to move the gluing mechanism upstream in the transport direction of the box, and at the same time, the gluing mechanism continues applying glue, and when the glue application is completed, the pressure contact mechanism is actuated. The flap portion is brought into pressure contact with the main body portion.

"Problem to be Solved by the Invention" By the way, in order to continue applying glue by the gluing mechanism when the transport of the box is stopped while the gluing mechanism is applying the glue, The position of the box is accurately detected, the glue application pattern by the glue application mechanism is grasped, and while the glue application mechanism is moved upstream in the transport direction of the box, it is applied to the unapplied part of the box, according to the regular glue application pattern. Then, glue can be applied in a pattern other than the already applied pattern.

However, in order to execute this, it is necessary to accurately detect the position of the box, and to recognize and execute the pattern excluding the already applied pattern from the regular application pattern and the already applied pattern. Therefore, the configuration becomes complicated and expensive.

On the other hand, it is conceivable to preset a glue application pattern at the time of an abnormal stop, and to have the box applied with glue using that application pattern when the box is abnormally stopped.

However, in this case, although the configuration is simple, there is a possibility that there may be a shortage of glued areas depending on whether the box is trying to apply glue to an area where it does not exist or the box is stopped, so it is difficult to apply glue securely. It becomes difficult to guarantee coating.

"Means for Solving the Problems" In view of such circumstances, the present invention provides the above-mentioned gluing device, in which a plurality of detectors for detecting the presence or absence of the box are arranged along the transport direction of the box, The plurality of detectors can detect the stop position of the box step by step, and the control device can store glue application patterns in advance in correspondence with the step-by-step stop position of the box. When the box is stopped, the drive mechanism is operated by the control device to move the gluing mechanism upstream, and glue is applied to the box based on a glue application pattern corresponding to the stepwise stop position of the box. It is something.

"Operation" According to the above-mentioned configuration, no matter where the box stops, glue can be applied based on the glue application pattern corresponding to the stopping position.
Reliable glue application can be guaranteed. Moreover, the configuration for this purpose only requires a plurality of detectors to detect the presence or absence of a box, and a control device that memorizes and executes a plurality of glue application patterns corresponding to the stop position of the box, so it is easy to compare. This makes it possible to manufacture the product at a relatively low cost.

"Example" The present invention will be explained below with reference to the illustrated example.
In FIGS. 2 to 4, the box 1 is provided with an upper flap 1b and a lower flap 1c extending horizontally at upper and lower positions on both sides of the main body 1a, and the upper flap 1b is formed by a flap folding mechanism (not shown) or fixed. It has already been folded downward toward the outside 1a by the guide.

First fixed guides 3 for bending the lower flaps 1c are provided on both sides of the conveyor 2 for conveying the boxes 1, and the lower flaps 1c of the boxes 1 conveyed by the conveyor 2 are provided with first fixed guides 3 for bending the lower flaps 1c. is guided along the first fixed guide 3 and bent upward toward the already bent upper flap 1b.

A pressure contact mechanism 4 is provided on the downstream side of the first fixed guide 3.
When the pressure contact mechanism 4 is not in operation, the pressure contact members 5 are located in a retracted position continuous to the downstream side of the first fixed guide 3, and The lower flap 1c can be received and guided in the required folded state.

Gluing mechanisms 6 are provided at outer positions on both sides of the pressure contact member 5 for spraying and applying glue to the already bent upper flap 1b. Each gluing mechanism 6
When the box 1 is detected by a detector to be described later, it is activated by a control device (not shown), and the glue 7 is injected into the upper flap 2c from both sides in two parts at a required interval. There is.

Lower flap 1c of the box 1 coated with the above glue 7
is transferred from the pressure contact member 5 to the second fixed guide 8 on the downstream side as it is transported by the transport conveyor 2, and is further bent and pressed against the upper flap 1b by the second fixed guide 8, and the The lower flap 1c is adhered to the upper flap 1b by pressure contact.

Next, each of the above-mentioned gluing mechanisms 6 is moved to a movable frame 10.
is provided so that the vertical position can be adjusted and the interval between both glueing mechanisms 6 can be adjusted, and each of the moving frames 1
0 are slidably attached to guide shafts 12 horizontally arranged and fixed to the side surfaces of the frame 11.
As shown in FIG. 2, air cylinders 13 are connected to each moving frame 10, and each air cylinder 13 connects the moving frame 10 together with the gluing mechanism 6.
The box 1 can be moved upstream in the transport direction from the non-operating position shown by the solid line in FIG. 4 to the operating position shown by the imaginary line.

Furthermore, as shown in FIG.
The pressing member 5 is fixed above a dogleg-shaped bracket 14, and the central bent portion of the bracket 14 is rotatably supported on a support shaft 15, thereby making it swingable. An air cylinder 16 is connected to the lower end of the bracket 14, and the pressure contact member 5 is swung between the non-operating position shown by the solid line and the operating position shown by the imaginary line by the air cylinder 16. By moving to the operating position, the lower flap 1c can be brought into pressure contact with the upper flap 1b.

However, in this embodiment, the conveyor 2
Six detectors 21, 22, 2 each consisting of a phototube, etc., are placed at required positions above the box 1 to detect the presence or absence of the box 1.
3, 24, 25, and 26 are arranged at required intervals along the transport direction of the box 1.

Each of these detectors 21 to 26 is connected to the above-mentioned control device (not shown), and during normal operation of the gluing device, the detector 21 and a rotary encoder (not shown) provided on the drive shaft of the conveyor 2 (not shown) are used. The conveyance status of the boxes is detected and confirmed, and when the conveyor 2 stops abnormally, the stop position of the boxes 1 can be detected step by step by each of the detectors 21 to 26.

In addition, the above control device includes, as will be explained in detail later,
Glue application patterns are stored in advance in correspondence with the stepwise stop positions of the boxes 1, and when the transport conveyor 1 stops abnormally, the air cylinder 13 and the gluing mechanism 6 are controlled, and the steps of the boxes 1 are controlled. Based on the glue application pattern corresponding to the specific stop position,
Glue can be applied to the upper flap 1b of the box 1.

In the above configuration, during normal gluing work,
As shown in FIG. 1, when the tip of the box 1 conveyed by the conveyor 2 is detected by the detector 21 (position A), the control device controls the box 1 by the signal from the rotary encoder mentioned above. The gluing mechanism 6 is operated while monitoring the position No. 1, and the glue is applied twice at each required time based on the normal glue application pattern 7a (J position).

On the other hand, if the conveyor 2 abnormally stops before the application of the glue 7 has been completed, as described above, the glue application pattern corresponding to the stepwise stop position of the box 1 is applied. Start applying glue.

That is, when the box 1 stops at the A position or the B position in Fig. 1, the most upstream detector 2
1 detects box 1 and the next detector 22 does not detect a box, the control device detects the air cylinder 13
is activated to move the gluing mechanism 6 to the upstream side in the transport direction of the box, and at the same time, the gluing mechanism 6 is activated based on the first application pattern 7b.

This first application pattern 7b is the same as the regular application pattern 7a described above in that the glue is applied in two steps, but the application time for each time is shortened. Then, when the box 1 stops at position A, that is, when the front end of the box 1 stops at the position where it is detected by the detector 21, the first coating pattern 7b is realized as it is. Ru.

However, when the front end of the box 1 advances to the B position ahead of the A position and stops, while the box advances from the A position to the B position, the first coating pattern in the regular application pattern 7a has already been applied. Part of the glue application has been performed, and the first application pattern 7 is
Since step b is executed after that, the overall coating pattern becomes a pattern different from the regular coating pattern 7a and the first coating pattern 7b.

When the application of the glue according to the first application pattern 7b is completed in this manner, the control device operates the air cylinder 16 to press the lower flap 1c against the upper flap 1b using the pressure contact member 5, thereby completing the adhesion between the two. .

Next, when the box 1 stops at position C or D in FIG. 1, the second detector 22 detects the box 1,
If the next detector 23 does not detect a box,
The control device operates the gluing mechanism 6 based on the second application pattern 7c.

The second application pattern 7c differs from the first application pattern 7b in that the first application of glue is omitted, and the time required for applying the second glue after the first application is completed. After ,
The second application, actually the first application, is performed.

Further, when the box 1 stops at the E position or the F position, the control device applies glue based on the third application pattern 7d. This third application pattern 7
d is the start time of the first coating that is actually performed earlier than the second coating pattern 7c.

Furthermore, when the box 1 stops at the G position or the J position, the control device determines that the application of glue has already been completed, and simply operates the air cylinder 16 to move the lower flap 1c upward using the pressure contact member 5. It comes to be adhered to the flap 1b.

Therefore, the control device controls each of the detectors 21 to 2.
It is only necessary to detect the stepwise stop positions A to J of the box 1 based on the detection signal from 6, select the glue application pattern 7b, 7c, or 7d corresponding to the stop position, and execute the gluing. The control program can be simplified, and inexpensive detectors and control devices can be used.

"Effect of the invention" As described above, according to the invention, even if the control program of the control device and the configuration of the gluing device are simplified,
This provides the effect of ensuring reliable gluing in the event of an abnormal stop.

[Brief explanation of the drawing]

FIG. 1 is an operational explanatory diagram showing an embodiment of the present invention;
Fig. 2 is a side view showing the gluing device, Fig. 3 is a sectional view taken along the - line in Fig. 4, Fig. 4 is a plan view of Fig. 2, and Fig. 5 is a sectional view taken along the - line. . DESCRIPTION OF SYMBOLS 1... Box, 1a... Main body, 1b... Upper flap, 1c... Lower flap, 2... Conveyor, 3... First fixed guide, 4... Pressing mechanism, 5
... Pressure contact member, 6 ... Gluing mechanism, 7 ... Glue, 7a
~7d... Application pattern, 8... Second fixed guide, 13, 16... Air cylinder, 21-26...
…Detector.

Claims (1)

[Scope of Claim for Utility Model Registration] A box having a main body and a flap adhered to the main body, a conveyor for transporting the box, and a detector that receives a signal from a detector to detect the presence or absence of the box. a control device that operates a gluing mechanism and causes the gluing mechanism to apply glue to a predetermined position on the bonding surface between the main body portion and the flap portion; and a control device that bends the flap portion as the box is transported by the conveyor. a bending member for adhering the glue to the main body; a drive mechanism for moving the gluing mechanism upstream in the box transport direction when the transport conveyor stops abnormally; In a gluing device equipped with a pressure welding mechanism that presses the box, a plurality of detectors for detecting the presence or absence of the box are arranged along the transport direction of the box, and the stopping position of the box is determined step by step using these multiple detectors. In addition, the control device is made to store glue application patterns in advance in correspondence with the stepwise stop positions of the boxes, and when the conveyor stops abnormally, the drive mechanism is actuated by the control device to apply the glue. A gluing device characterized in that the mechanism is moved upstream and the box is coated with glue based on a glue coating pattern corresponding to the stepwise stop positions of the box.