JPS587530B2 - box sealing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a box-sealing machine that can reliably seal a box such as a cardboard box using an adhesive tape and that can perform various sealing methods.

When packaging a cardboard box or similar box with a lid (hereinafter simply referred to as the box), the lid is folded against the box containing the contents, and then the lid is folded during transportation. In order to prevent the package from being opened, packaging adhesive tape such as cloth tape, craft tape, or gummed tape is used to firmly seal the package, and the most common method of sealing is to attach a single letter as shown in Figure 8. This is done by folding the two top covers on the left and right sides of the box and butting them together at the top of the box, then gluing and connecting the top covers along the seam of the lids, and also making them integral with the front and rear end faces of the box. This is a method of pasting the box, and after sealing the box that can be pasted, a conveyor device that transports the box in one direction using a belt conveyor or the like, folding the top cover of the box that is being transported, a first sticking device that sticks the front end of the adhesive tape fed out to the upper part of the front end surface of the box body, and continues to feed out the adhesive tape using the movement of the box body and sticks it to the seam of the lid; , a cutting device that cuts the rear end of the adhesive tape to an appropriate length after the seam of the lid is completed, and a second pasting device that affixes the cut rear end of the adhesive tape to the rear end surface of the box body. It consists of a device.

However, this conventional device can only perform the sealing function of pasting one character, for example, partial pasting as shown in FIGS. 17 to 19, and L sealing as shown in FIGS. 20 and 21.
When using other sealing methods such as letter pasting or a combination of L-shaped pasting and partial pasting as shown in Figures 16 and 22, use a dedicated sealing machine equipped with the sealing function shown on the left, or Alternatively, the only option available is to increase the size and complexity of the device and incorporate units having various sealing functions in series.

The reason for this is that conventional ■-shaped sealing machines had a structure in which the cutting blade of the cutting device was moved vertically to cut the adhesive tape. This is because if the timing was adjusted, there was a risk that the cutting blade would damage not only the adhesive tape but also the box body.

The present invention solves the drawbacks of the conventional one-character sealing machine as described above, and has various sealing functions such as not only I-shaped sealing but also L-shaped sealing and partial sealing by simple operation of the adhesive device. The purpose of this is to provide a compact sealing machine that can be converted into a sealing machine. A first sticking device that sticks the adhesive tape to the seam of the front gable surface and the lid, and a cutting device that cuts the rear end of the adhesive tape to an appropriate length after pasting the adhesive tape to the seam of the lid.
A box sealing machine comprising a second sticking device that sticks the rear end of the cut adhesive tape to the rear end surface of the box,
The first adhesion device consists of an adhesive tape delivery tool and an adhesion tool that holds the delivered adhesive tape and can be freely pressed and separated from the box body through the held adhesive tape. , the adhesion device is formed of an auxiliary side plate, an arm, an adhesion plate, and an air cylinder, and the auxiliary side plate is rotatably attached to a shaft I in a direction parallel to the direction in which the box is transported. The side plate has an arc-shaped long hole centered on the shaft I, and one end of the arm is rotatably attached to the shaft I, and the other end is connected to the air cylinder through the shaft opening. The one end of the adhesive plate is rotatably connected to the shaft, and the shaft is slidably mounted in the elongated hole. , the other end of the box sealing machine is characterized in that it extends downward.

Next, an embodiment of the box sealing machine of the present invention will be described in detail with reference to the drawings.

1 and 2 show the main parts of a pasting mechanism 1 that incorporates first and second pasting devices and a cutting device.

Reference numeral 100 denotes a side plate of the pasting mechanism 1, and as shown in FIG. 2, it is provided facing each other on both sides of the pasting mechanism 1 in the longitudinal direction.

101 is an adhesive tape reel for attaching adhesive tape;
102 is an adhesive tape roll made of pressure-sensitive adhesive tape;
103 is a support of the adhesive table reel 101, and its lower end is fixed to the side plate 100.

Reference numeral 105 denotes a guide roll of adhesive tape, which is rotatably attached to the shaft 104.

Reference numeral 107 denotes another guide roll of adhesive tape, which is rotatably attached to the shaft 106 and has a knurled surface.

These guide rolls 105 and 107 form an adhesive tape feeder 130 of a pasting tool, which will be described later, and is attached to the right corner of an auxiliary side plate, which will also be described later.

Reference numeral 111 denotes an auxiliary side plate which has a substantially fan shape and is rotatable about the shaft 108.

An arm 109 is arranged parallel to both ends of the shaft 108 as shown in FIG. 2, and one end of the arm is rotatable around the shaft 108 independently of the rotation of the auxiliary side plate 111.

Reference numeral 125 denotes an adhesive plate made of a plate, and a circular tubular portion is provided at the upper end of the adhesive plate.The circular tubular portion is inserted into the shaft 108, and one end of the circular tubular portion is fixed to the auxiliary side plate 111. It is designed to rotate integrally with the

As shown in FIG. 2, only one end of the adhesive plate 125 is bent and extends downward.

Reference numeral 112 is an adhesive tape holder consisting of a plate spring 128 and a free roll 129 whose surface has been processed with a roughening process, and is attached to a position where there is no risk of contact with the box of the auxiliary side plate 111, and the free roll 129 is It is constantly pressed by the adhesive plate 125.

124 is an air cylinder, one end of which is connected to the shaft 117.
The other end is rotatably connected to the arm 109 via a shaft 110.

The shaft 110 is slidable within an arcuate long hole 131 bored in the auxiliary side plate 111.

Therefore, the auxiliary side plate 111, the arm 109, the adhesive plate 125
, the adhesive tape holder 112 and the air cylinder 124 constitute the main part of the adhesive tape holder 132.
2 and the adhesive tape feeder 130 constitute a first sticking device A.

An arm 123 is rotatably attached to a shaft 122 fixed to the side plate 100.

Reference numeral 121 is a pressure roller that presses the seam of the lid and the rear end surface via an adhesive tape, and is rotatably attached to a shaft 120 fixed to the tip of an arm 123.

A slide iron 113 has one end rotatably attached to a shaft 127 attached to the front end of the arm 123, and the other end rotatably connected to the arm 109 via the shaft 110.

Reference numeral 116 is a tension spring, and one end of the shaft 1 is fixed to the side plate 100.
18, and the other end is hooked to a shaft 126 fixed to the auxiliary side plate 111 and is constantly pulled.

115 is the same tension spring and one end is the slide rod 113
The other end is hung on a shaft 119 fixed to the arm 109.
It is hung on a shaft 110 attached to the shaft 110, and is also constantly pulled.

Thus, the arm 123, the pressure roller 121, and the slide rod 113 constitute a second sticking device B.

114 is a cutting device, and a cutting blade 134 is fixed to a support stand 133 suspended between both side plates.

Therefore, FIG. 3 shows a state in which the pasting mechanism 1 described above is incorporated into a box conveyance device, and in the figure, 3 is a conveyance device, 301 is a main frame, 302 is a caster, 303 is a transfer table, 304 is a prime mover with a reducer, 305 is a chain,
306 is a sprocket, 307 is a belt pulley J-, 30
8 is a belt conveyor, 310 is a guide bar that regulates the width of the box body, 320 is a support for incorporating the pasting mechanism 1, 33
Reference numeral 0 denotes a top cover holder for pushing in the lid of the box and smoothly feeding the box into the pasting mechanism 1, and is attached to the entrance of the pasting mechanism 1.

Next, the operation of the above-mentioned box sealing machine of the present invention will be explained step by step.

First, to explain how to attach the adhesive tape, as shown in FIG.
At this time, when the adhesive tape 102 is pulled out downward, the adhesive tape 102 is attached so that its adhesive surface is located on the right side in FIG. 1.

Next, pull the end of the adhesive tape 102 downward, and move it to the right side of the guide roll 105 so that the back side of the adhesive tape 102 is in contact with the guide roll 105. Then, the adhesive tape 102 is passed through the left side of the guide roll 107 and pulled downward so that the adhesive surface of the adhesive tape 102 is in contact with the guide roll 107.
Next, the cylindrical portion of the upper edge of the adhesive plate 125 is slid to feed the adhesive tape 102 to the right side of the adhesive plate 125 without running along the back surface thereof.

Next, the adhesive tape is inserted between the adhesive tape holder 112 and the adhesive plate 125 and fed out to the bent portion of the adhesive tape 125, completing preparations for feeding the adhesive tape.

The pasting mechanism 1 adjusted in this way is set at an appropriate height position on the support 320 according to the height of the box to be sealed, as shown in FIG. The distance between the two guide rails 310 is maintained at an appropriate distance depending on the width by adjusting a guide rail receiver (not shown) or the like.

Next, the box transport device 3 is operated.

First, the rotation of the prime mover 304 is transmitted to the sprocket 306 via the chain 305, and the pulley 307 that is coaxial with and rotates with the sprocket 306 also rotates, and this rotation causes the belt conveyor 308 to run in the direction of the arrow. .

Therefore, the box placed on the transfer table 303 in FIG. sent to.

Next, the operation of the pasting mechanism 1 will be explained with reference to FIGS. 1 and 2 and FIGS. 4 to 8.

The tip of the adhesive tape is stuck to the front end surface of the box body 4, which has been transported with the top cover folded by the top lid pusher 330, by the pressing force of the pasting plate 125 of the pasting tool 132, and then the box body 4 is As the adhesive tape moves, the adhesive tape is sequentially fed out to adhere the abutting portion of the upper cover. During this time, the adhesive plate 125 presses the abutting portion of the upper cover via the adhesive tape, so that the adhesive tape is not adhered as shown in FIG. The mounting plate 125 and the auxiliary side plate 111 integrated therewith rotate clockwise about the rotation shaft 108, and at the same time, the tension spring 116 is expanded to strengthen the pressing force.

Next, when the box body is in an appropriate position, the air cylinder 124 is operated as shown in FIG. 6, and the arm 109 is moved clockwise.

At this time, the shaft 110 initially slides inside the long hole 131, but
After contacting the upper end of the elongated hole 131, the auxiliary side plate 111 is further rotated slightly, so that the adhesive plate 125 is also further rotated and separated from the adhesive tape.

At the same time, the adhesive tape is flipped up in the same direction as the moving direction of the adhesive plate 125, and at this time, the adhesive tape is cut by the cutting blade.

On the other hand, the tension spring 115 is expanded simultaneously with the operation of the air cylinder 124, and the slide rod 113 also slides in the direction of the arrow in FIG.
As a result, the arm 123 rotates clockwise about the shaft 122.

While the pressing roller 121 is positioned on the upper lid of the box 4, it presses the upper lid surface via the adhesive tape 102 attached thereto.

Next, when the box body 4 is transferred to the position shown in FIG.
3 further rotates, and the pressing roller 121 presses the adhesive tape along the rear end surface of the box body 4 via the rear end thereof, thereby pasting the adhesive tape on the rear end surface of the box body 4.

Next, when the box 4 is completely removed from the operating range of the pressure roller 121, the air cylinder 124 is restored.

At this time, only the restoring force of the tension spring 115 can cause the arm 123 to
Since the slide rod 113 does not return to its original state, a slide rod 113 is provided, and when the slide rod 113 contracts and its stopper 135 abuts against the stopper locking portion 136, the arm 123 is forcibly rotated counterclockwise and returns to its original state.

One cycle ends when the state shown in FIG. 4 is reached, and the same operation is repeated thereafter to perform continuous work.

FIG. 8 shows a box body to which the letter ■ has been pasted in this manner.

Next, the operation of performing the sealing function using both L-shaped pasting and partial pasting as shown in FIG. 16 using the same box sealing machine of the present invention will be described with reference to FIGS. 9 to 15.

FIG. 9 shows the same operating state as FIG. 4, and FIG. 10 shows the same operating state as FIG. 5. When the box body is in the position shown in FIG. When the adhesive plate 125 is rotated and separated from the box, the sixth
As shown in the figure, the adhesive tape springs up and is cut by the cutting blade 134, and at the same time, when the pasting tool 132 completes one cycle of suppressing and separating from the box, it is pasted by the pressing roller 121 that follows later. , one of the L-shaped pasting is done.

Continuing, when the box body 4 is in the position shown in FIG.
When the above-mentioned 1st cycle of 2 is operated, partial pasting is done as shown in Fig. 13, and when the same 1st cycle is operated in the position shown in Fig. 14, the other part of the L-shaped pasting is done as shown in Fig. 15. The sealing operation is completed, and a sealed box as shown in FIG. 16 is obtained.

In short, various sealing functions can be achieved depending on the combination of the timing of the press-release cycle of the adhesive against the box body and the position of the box body in the pasting mechanism. Fig. 17 shows two-point sealing, Fig. 18 shows three-point sealing, and Fig. 19 shows one-point sealing. Figure 21 shows a B-shaped cardboard box with L-shaped pasting, and Figure 22 shows a box with L-shaped pasting on the front and back and two-point pasting.

In the box sealing machine of the present invention, it is possible to seal both the upper and lower surfaces of the box at the same time by arranging two pasting mechanisms, each consisting of a first and second pasting device and a cutting device, above and below the transport device. It is.

In the box sealing machine of the present invention, as the holder for holding the adhesive tape on the adhesive plate, in addition to the one consisting of a plate spring and a free roll as in the above embodiment, a brush-shaped holder may be used. .

The box sealing machine of the present invention is constructed as described above, in which the pasting tool in the first pasting device holds the adhesive tape sent out from the adhesive tape feeding tool, and the held adhesive. Since the tape allows the tape to be freely compressed and separated from the box body, the adhesive tape can be cut into a predetermined position by utilizing the recoil of the adhesive tape when it separates, without having to move the cutting blade up or down when cutting the adhesive tape. It can be cut at the desired position, without damaging the box body, and by adjusting the timing of the cycle of pressing and releasing the adhesive against the box body, it is possible to not only paste a ■ shape, but also partially paste it, and L shape. It is possible to provide a box sealing machine that is compact and has a simple mechanism that can perform various sealing functions such as pasting or a combination of partial pasting and L-shaped pasting, and can be used for multiple purposes.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the box sealing machine of the present invention, and Figure 1 is a side sectional view of a pasting mechanism consisting of first and second pasting devices and a cutting device. , FIG. 2 is a partially omitted plan view of the same as above, FIG. 3 is a side view of a box sealing machine of the present invention in which the pasting mechanism shown in FIGS. 1 and 2 is incorporated into a conveyance device, and FIG. 4 - Figure 7 is an explanatory diagram showing the operation of the first pasting device in order when pasting a ■ character, Figure 8 is a perspective view of a box body with a single character pasted by the same operation, and Figure 9 〜FIG. 15 is an explanatory diagram showing the operation of the first pasting device in order when a sealing method is used in which both L-shaped pasting and partial pasting are used.
Figure 6 is a perspective view of a box with L-shaped pasting and partial pasting done by the same operation as above, and Figures 17 to 22 show cases in which another method of sealing was adopted using the box sealing machine of the present invention. Figure 17 shows an example of how the box is sealed.
Figure 8 shows 3 points pasted, Figure 19 shows 1 point pasted, 20th
The figure is a perspective view of a box with L-shaped pasting on the front and back, FIG. 21 is a B-shaped cardboard box with L-shaped pasting, and FIG. 22 is a perspective view of a box body with L-shaped pasting on the front and back and two-point partial pasting. 1 is a pasting mechanism, 100 is a side plate, 105 and 107 are guide rolls, 130 is an adhesive tape feed line, 111 is an auxiliary side plate, 109 is an arm, 125 is a pasting plate, 112 is an adhesive tape holder, and 124 is an air cylinder. , 132 is a pasting tool, A is a first pasting device, 121 is a pressure roller, 12
3 is arm, 113 is slide rondo, 115, 116
is a tension spring, B is a second pasting device, 114 is a cutting device,
3 is a conveyance device, and 330 is a top cover holder.

Claims (1)

[Claims] 1. A conveyance device that transports the box in one direction, a first adhesion device that sends out adhesive tape and applies it to the front end face of the box and the seam of the lid, and adhesive tape to the seam of the lid. Consists of a cutting device that cuts the rear end of the adhesive tape to an appropriate length after pasting is completed, and a second pasting device that sticks the cut rear end of the adhesive tape to the rear end of the box. In a box sealing machine, a first pasting device includes an adhesive tape delivery tool, a device that holds the delivered adhesive tape, and applies a pressing force to the box body through the held adhesive tape. The pasting tool is made up of an auxiliary side plate, an arm, a pasting plate, and an air cylinder, and the auxiliary side plate is rotatable in a direction parallel to the transport direction of the box. The arm is rotatably attached to the shaft I, and the auxiliary side plate has an arc-shaped elongated hole centered on the shaft I. One end of the arm is rotatably attached to the shaft I, and the other end is is rotatably connected to one end of the air cylinder via a shaft port, the shaft port is slidably mounted within the elongated hole, and the adhesive plate is configured to rotate together with the auxiliary side plate. A box sealing machine characterized in that one end is attached to a shaft and the other end extends downward.