JPH065874Y2 - Bag making equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a bag having an opening on one side of its outer periphery, such as a medicine bag for storing various prescription medicines such as a tablet or a package containing powdered medicine. The present invention relates to the bag making apparatus.

[Conventional technology]

A tubular sheet having heat fusion properties is fed in one direction, the sheet is heat-sealed in the width direction by a sealing device provided in the transfer path, and the sealing is performed by a cutter device provided on the sheet loading side of the sealing device. Conventionally, there is a medicine bag manufacturing apparatus that cuts a sheet in parallel with a portion to form a medicine bag having a bottom heat-sealed.

[Problems to be solved by the device]

By the way, in the above-mentioned conventional medicine bag manufacturing apparatus, since it is configured to send a single sheet, only medicine bags of a certain size can be formed, and several kinds of medicine bags having different vertical and horizontal lengths are provided. When forming, several bag-making apparatuses are required, and there is a problem in economy.

Then, this invention makes it a technical subject to solve the above-mentioned problem and to provide the bag manufacturing apparatus which can form several kinds of bags with different sizes.

[Means for Solving the Problems]

In order to solve the above problems, in the present invention, several kinds of heat-fusible sheets are folded in two in the width direction and have different pitches and width dimensions of register marks formed at equal intervals along the side edge. A plurality of forward / reverse rotatable feed rollers that are individually transported are provided in the vertical direction, and when each sheet is fed in the reverse direction to the transport path of the sheet sent from each feed roller, the leading edge of the sheet is detected. A first sensor for stopping the reversely rotating feed roller is provided, and a sheet device for heat-sealing the sheet in the width direction is provided on the sheet unloading side of the first sensor, and a heat-sealing portion of the seal is provided in the width direction 2 or the like. A cutter device that cuts from the minute position to form a bag and a bag take-out device are sequentially provided in the seal transfer direction,
In the transfer path of the seal from the cutter to the take-out device, a second sensor and a third sensor for register mark detection provided on each sheet are provided with an interval corresponding to the dimension between the center of the seal device and the center of the cutter device. When the second sensor detects the register mark, the feed roller is stopped to operate the sealing device, and after the operation, the feed roller is rotated in the forward direction. When the third sensor detects the register mark, the cutter device is operated. It employs a configuration that operates and reverses the feed roller after the operation.

[Action]

In the bag making apparatus having the above-described structure, the sheet is fed by the rotation of the feed roller, and when the register mark of the sheet is detected by the second sensor and the third sensor, the feed roller is stopped each time, and the second sensor When the mark is detected by the seal device, the seal device is activated to heat seal the width direction, and when the mark is detected by the third sensor, the cutter device is activated to cut the seal portion into two equal parts in the width direction.
A bag with both sides sealed can be detected.

Since a plurality of folded sheets for detecting bags have different width dimensions and the pitch of the register mark provided on the side edge is also different, it is possible to obtain bags of different sizes by making bags from each sheet. it can.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, each of several kinds of heat-fusible sheets S ₁ , S ₂ , S ₃ and S ₄ having different width dimensions were provided with a required space in the vertical direction. Guide roller 1
And is individually transported in the direction of the arrow in FIG. 1 by each of the feed rollers R ₁ , R ₂ , R ₃ , and R ₄ .

Here, the heat-fusible sheets S _{1 to} S ₄ are folded in two in the width direction, and the register mark RM is provided along one side edge thereof.
Are provided at equal intervals. This register mark RM
The larger the sheet width dimension, the larger the pitch.

The feed rollers R _{1 to} R ₄ are composed of a pair of rollers 2 and 3 which are in contact with each other, and one of the rollers is a motor M.
It is rotated by ₁ , M ₂ , M ₃ and M ₄ .

The sheets S _{1 to} S ₄ fed by the rotation of the feed rollers R _{1 to} R ₄ are gathered by the guide plate 4 arranged in an inclined shape, and the first sensor PH ₁ is provided at the gathering position. The first sensor PH ₁ detects the leading edge of the sheets S _{1 to} S ₄ conveyed in the direction opposite to the arrow direction of FIG. 1 when the feed rollers R _{1 to} R ₄ rotate in the reverse direction, and at the time of detection, the first sensor PH ₁ of the feed roller R _{1 to} R ₄ moves. The drive motors M _{1 to} M ₄ are stopped.

On the sheet unloading side of the first sensor PH ₁ , a sealing device 10 that heat-sheets the sheets S _{1 to} S ₄ in the width direction and a cutter device 20 that cuts the widthwise center of the sealing portion are sequentially arranged in the sheet transport direction. It is provided.

The sealing device 10 includes a pair of heater plates 1 arranged vertically.
1 and 12, the upper heater plate 11 is provided so as to come into contact with and separate from the lower heater plate 12, and comes into contact with the lower heater plate 12 when moving in the downward direction to heat the sheet in the width direction. .

Further, in the cutter device 20, the upper blade 22 is moved up and down with respect to the fixed lower blade 21, and the lower blade 22 lowers to cut the seal portion of the sheet to form a bag.

On the sheet unloading side of the cutter device 20, the cutter device 2
The leading edge of the sheet sent from 0 and the cutter device 2
Table 30 supporting a bag formed by actuation of 0
Is provided. The bag sent to the table 30 is carried out by the take-out device C.

The take-out device C includes a first roller conveyor 40 that conveys a bag in the same direction as the sheet transfer direction, and a second roller conveyor that conveys the bag delivered from the first roller conveyor 40 in a direction orthogonal to the sheet transfer direction. And 50.

The first roller conveyor 40 is provided with roller frames 41 and 42 above and below the table 30, and a lower roller frame 42 is provided.
, A plurality of rollers 43 are rotatably attached to the front and the rear of the sheet in the sheet conveying direction, the upper outer periphery of each roller 43 is exposed to the table 30 through the opening 31 formed in the table 30, and the rollers 43 are rotationally driven. The motor 44 is attached to the lower surface of the lower roller frame 42.

Further, a plurality of rollers 45, which rotate in contact with the rollers 43, are rotatably attached to the upper roller frame 41, and the rollers 45 are brought into contact rotation with the lower rollers 43 to rotate both rollers 43, The sheet or bag sent between 45 is conveyed in the sheet transfer direction. A stopper 46 is provided at the front part in the conveying direction, and the bag that stops by hitting the stopper 46 is the second roller conveyor 5
Carried by 0.

The second roller conveyor 50 has roller frames 51, which are arranged above and below the transfer path of the bag sent from the first roller conveyor 40.
52 is provided, and the plurality of rollers 5 is provided
3 is rotatably mounted, and a rotation driving motor 54 for the roller 53 is supported by the lower roller frame 52.

Further, a plurality of rollers 55 that come into contact with the rollers 53 are rotatably attached to the upper roller frame 51, and the rollers 55 are brought into contact rotation with the lower roller 53 and fed between the rollers 53 and 55. The bag is conveyed in a direction orthogonal to the sheet transfer direction.

Here, when the bag is sent out from the first roller conveyor 40, the upper and lower rollers 53, 5 of the second roller conveyor 50.
When 5 are in contact with each other, the bag cannot be fed between the rollers 53 and 55, and conversely, the second roller conveyor 5
When 0 conveys a bag, if the upper and lower rollers 43 and 45 of the first roller conveyor 40 hold a part of the bag, the bag cannot be conveyed.

Therefore, the upper and lower rollers 43 of the first roller conveyor 40,
When 45 is in contact, the upper and lower rollers 53, 55 of the second roller conveyor 50 are separated from each other, and when the upper and lower rollers 53, 55 of the second roller conveyor 50 are in contact, the upper and lower rollers of the first roller conveyor 40 are in contact. The rollers 43 and 45 are separated from each other.

That is, the upper and lower roller frames 41 and 42 of the first roller conveyor 40 and the upper and lower roller frames 51 and 52 of the second roller conveyor 50 are respectively connected with arms 60 and 61 that are long in the sheet transfer direction, 6
The tip portion of No. 1 is swingably supported by pins 62 and 63.

Further, a cam shaft 64 orthogonal to the upper and lower arms 60 and 61 is arranged, two cams 65 and 66 are fixed to the cam shaft 64, and the upper and lower outer circumferences of one cam 65 are contacted. The cam follower 67 is connected to the first roller conveyor 40.
Rotatably attached to the upper and lower arms 60 of the
A cam follower 68 that comes into contact with the upper and lower outer circumferences of 6 is rotatably attached to the upper and lower arms 61 of the second roller conveyor 50, and the arms 60 and 61 are vertically swung by the rotation of the cam shaft 64 every 90 °. When the upper and lower rollers 43 and 45 of the first roller conveyor 40 come into contact with each other, the upper and lower rollers 53 and 55 of the second roller conveyor 50 are separated from each other.

Further, in order to control the rotation of the cam shaft 64, a sensor PH ₄ for detecting the presence or absence of a bag is provided on the carry-in side of the stopper 46, and when the sensor PH ₄ detects the bag, a cam shaft drive motor (shown in the figure). (Omitted) is operated to rotate the cam shaft 64, and the upper and lower rollers 53, 5 of the second roller conveyor 50 are driven.
The 5 are in contact with each other. A sensor (not shown) that detects that the bag has been carried out by the rotation of the rollers 53 and 55 is provided, and the cam shaft driving motor is operated by the signal from this sensor to rotate the cam shaft 64, The upper and lower rollers 43 of the one-roller conveyor 40,
The 45 are in contact with each other.

In order to keep the cam followers 67 and 68 in contact with the cams 65 and 66, the arms 60 and 61 are biased by springs, but the springs are omitted in the figure.

A second sensor PH ₂ for detecting the register mark RM of the sheet is provided in the sheet carry-in portion of the first roller conveyor 40.
The third sensor PH ₃ is provided in order in the sheet transport direction, and the distance between the sensors PH ₂ and PH ₃ is equal to the dimension between the centers of the sealing device 10 and the cutter device 20.

The bag-making apparatus shown in the embodiment has the above-mentioned structure, and this bag-making apparatus selects one sheet from the plurality of sheets S _{1 to} S _{4 according} to the size of the bag to be formed, and the sheet is selected. Is conveyed by the rotation of the feed roller to form a bag.

Now, for example, the sheet S is rotated by the rotation of the feed roller R _4.
When the sheet ₄ is conveyed, the sheet S ₄ is sent out from the sealing device 10 and the cutter 50 onto the table 30. At this time, the upper and lower rollers 43 of the first roller conveyor 40,
45 is rotating, and the sheets S ₁ sent onto the table 30 by the rollers 43 and 45 are transported in the same direction and at the same speed.

The sheet S ₄ is fed by a predetermined length, and the second sensor PH
_{When 2} detects the register mark RM, the feed roller R
The rollers 43 of the _first and first roller conveyors 40 stop, and at the same time, the upper heater plate 11 of the sealing device 10 descends to heat seal the sheet S ₁ with the lower heater plate 12 (see FIG. 5). When the upper heater plate 11 moves upward and stops, the feed roller R ₁ and the first roller conveyor 4
The 0 roller 43 rotates to further convey the sheet S ₄ in the same direction. When the sheet S ₄ is fed for a predetermined length, the third sheet
The sensor PH ₃ detects the register mark RM, and the detection causes the feed roller R ₁ and the roller 43 of the first roller conveyor 40 to stop.

Here, since the distance between the second sensor PH ₂ and the third sensor PH ₃ is equal to the dimension between the centers of the seal device 10 and the cutter device 20, the stop of the feed roller R ₁ and the roller 43 causes the seal device 10 to stop. The sealed seal portion faces the position of the cutter device 20, and at the same time as the sheet S ₄ is stopped, the cutter device 20 operates to cut the seal portion from the bisected position in the width direction (see FIG. 6). ).

By the above cutting, as shown in FIG. 8, a bag B whose side portions are heat-sealed is formed.

After the operation of the cutter device 20, the feed roller R ₁ rotates in the reverse direction to convey the sheet S ₄ in the direction opposite to the above. Since the leading edge of the sheet S ₄ is separated from the sealing device 10 by the reverse feeding, it is possible to prevent the leading edge portion of the sheet S ₄ from being heated by the sealing device 10, and the leading edge of the sheet S ₄ is the first sensor passes through the position of the PH _1, the first detection signal of the sensor PH _1, the feed roller _{R 1} is stopped (see FIG. 7).

On the other hand, the roller 43 of the first roller conveyor 40 rotates,
The bag B on the table 30 is conveyed forward by the first roller conveyor 40. At this time, since the upper and lower rollers 53, 55 of the second roller conveyor 50 are separated from each other, the movement of the bag B is not hindered, and when the bag B hits the stopper 46 and stops, the sensor PH ₄ Is activated, and the first roller conveyor 40 is stopped by the detection signal from the sensor PH ₄ . At the same time, the cam shaft 64 rotates 90 ° to separate the upper and lower rollers 43, 45 of the first roller conveyor 40 from each other, and the upper and lower rollers 53, 45 of the second roller conveyor 50,
55 are brought into contact with each other. Further, the motor 54 operates to rotate the roller 53, and the rotation of the roller 53 causes
The bag B is taken out from the carry-out end of the second roller conveyor 50.

In the bag making apparatus shown in the embodiment, each of the folded sheets S _{1 to} S ₄ has a different width dimension, and also has a different pitch of the register marks RM provided at equal intervals along the side edge portion. Therefore, by forming the bag B from the sheets S _{1 to} S ₄ by the above-described operation, it is possible to form several kinds of bags having different width dimensions and lengths.

In the case of the embodiment, the device B for taking out the bag B is composed of the first roller conveyor 40 and the second roller conveyor 50, but the second roller conveyor 50 is omitted and the first device is omitted.
The bag B may be taken out by the roller conveyor 40 in the sheet transfer direction. Alternatively, the belt conveyor may be used instead of the roller conveyor.

In the case of forming a medicine bag for containing medicines, the medicine bag is conveyed to a printer device and appropriately printed after the medicine bag is formed.

[Effect of device]

As described above, in the present invention, the two types of heat-fusible sheets, which are folded in two in the width direction and have different pitches of the register marks formed along the side edges, can be individually transferred by the feed rollers, A sheet device and a cutter device are provided in the sheet transfer path, and a second sensor and a third sensor are provided on the carry-out side of the cutter device to control the sheet feeding amount. Can form several bags of different sizes. Also, after cutting the sheet with the cutter device,
Since the sheet is fed backward and the tip of the sheet is retracted to the position where it is removed from the sealing device, it is possible to prevent the sheet tip from being heated by the sealing device, and at the same time, another sheet is transferred and the bag is removed. When it is formed, it does not hinder the formation of the bag, and as a result, various bags can be reliably formed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the bag making apparatus according to the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a III-III of FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG. 2, FIGS. 5 to 7 are diagrams showing stepwise operation states of the same, and FIG. 8 is formed. It is a perspective view of the opened bag. _{S 1, S 2, S 3} , S 4 ...... _{sheet, R 1, R 2, R} 3, R 4 ...... feed roller, PH ₁ ...... first sensor, PH ₂ ...... second sensor, PH ₃ ... ... third sensor, 10 ... sealing device, 20 ... cutter device, C ... take-out device.

Claims (1)

[Scope of utility model registration request] 1. A number of sheet feeding rollers for vertically transporting several kinds of heat-fusible sheets, which are folded in two in the width direction and have different width dimensions, individually in a single sheet transport path in the vertical direction. A sealing device for disposing a first sensor for detecting the leading edge of the sheet on the sheet transfer path, and for heat-sealing the sheet in the width direction on the sheet unloading side of the first sensor;
A cutter device that cuts the heat-sealed portion of the sheet from the bisected position in the width direction to form a bag, and a bag take-out device are sequentially provided in the sheet transfer direction, and a sheet transfer path from the cutter to the take-out device. And a second sensor and a third sensor for detecting the register mark provided on each sheet at an interval corresponding to the dimension between the centers of the sealing device and the cutter device, and the second sensor detects the register mark. When detected, the feed roller is stopped and the sealing device is operated, and after that operation, the feed roller is rotated in the forward direction,
When the third sensor detects the register mark, the cutter device is operated, and after that operation, the feed roller is reversed.
A bag making apparatus that stops the feed roller when the first sensor detects the leading edge of the sheet.