JP6898644B2 - Pillow wrapping machine - Google Patents

Description

The present invention relates to a pillow wrapping machine.

A pillow wrapping machine, which is a form of a wrapping machine, has the following configurations. The pillow wrapping machine continuously supplies a strip-shaped film wound on a roll of raw material to a bag making machine, and makes a tubular bag when passing through the bag making machine. Then, the center sealing device arranged on the downstream side of the bag making device seals the film polymerized ends that are formed into a tubular shape through the bag making device and are overlapped with each other. A tubular film is formed by this seal. Further, a product transporting / supplying device is arranged on the upstream side of the bag making device, and products transported from the product transporting / supplying device at predetermined intervals are supplied into the bag making device. As a result, when the product passes through the bag making device, it is stored in the tubular film at predetermined intervals, and the product is conveyed together with the tubular film. Then, a pillow wrapping body containing the product is manufactured by sealing and cutting the tubular film so as to cross the tubular film in the lateral direction at predetermined intervals with a top sealing device arranged on the carry-out side of the pillow wrapping machine. To.

For example, as illustrated in Patent Document 1, in this type of pillow wrapping machine, a cover that opens and closes so as to cover the periphery of the center seal device and the top seal device is conventionally provided. Each sealing device is adjusted with the cover open, or a film for packaging is passed through each sealing device for initial setting. Then, when the pillow wrapping machine operates and starts the wrapping process, the cover is closed. As a result, it is possible to prevent an accident in which an operator accidentally comes into contact with a machine that moves such as rotation or a heater heated to a high temperature.

JP-A-2014-97834

Conventionally, safety measures such as covering the area around the bag making device with the above-mentioned opening / closing cover have not been taken. This is because it has been considered that there is no need to take safety measures in the vicinity of the bag making device because the risk is lower than that in the vicinity of the sealing device.

Further, if it is covered with a cover that opens and closes disclosed in Patent Document 1 and the like, a support mechanism for the original roll is arranged above the bag making device, and the original roll is continuously fed out from the original roll. Since a plurality of various rollers for determining the transport path of the strip-shaped film are arranged, a large cover covering all of them is required, which increases the size of the device.

Further, prior to operating the pillow wrapping machine, it is necessary to hang the strip-shaped film unwound from the original roll on a plurality of rollers and then set it in the bag making machine. Furthermore, in order to adjust the supply angle of the strip-shaped film with respect to the bag making device for each type of package, it is necessary to change the height, angle, etc. of the tension roller arranged at a predetermined position diagonally above the bag making device. is there. The cover is opened to perform such adjustment work, but it is difficult to open and close the entire large cover because it is complicated and it is necessary to secure a moving space for the cover to open and close. Therefore, for example, a door that opens and closes is provided on a part of the entire surface, and the above adjustment work is performed with the door open. Then, the space required for the adjustment work, such as the adjustment work of the vertical position of the tension roller and the film threading work of hanging the film over multiple rollers and guiding it to the bag making machine, is large, and other than the door. There is a problem that it is difficult to take safety measures because the part of the wall that does not open and close becomes an obstacle.

In order to solve the above-mentioned problems, in the pillow wrapping machine of the present invention, (1) an area sensor is arranged in the installation area of the bag maker of the pillow wrapping machine, and the detection area of the area sensor is the carry-in of the bag maker. It is set to detect the entry into the space on the upstream side of the mouth, and has a second area sensor whose detection area is the surface covering the upper part of the product on the carry-in side to the bag making machine .

In this way, if a worker or the like existing around the pillow wrapping machine accidentally tries to enter a part of the body such as a hand or an arm into the space on the upstream side of the carry-in entrance of the bag making machine, the area sensor will use it. Is detected. Therefore, for example, by performing danger avoidance processing such as stopping the operation of the pillow wrapping machine based on the detection signal output from the area sensor, a part of the body such as a worker is caught in the bag making machine and enters. It is possible to avoid the risk of doing so.

Further, since the area sensor is used for monitoring, when the monitoring is stopped, there are a pair of sensor units arranged at both ends of the detection area, but nothing exists in the detection area. Therefore, for example, it is possible to secure a work space for performing film threading work in which the strip-shaped film is hung on each roller or the like by a predetermined route before the start of packaging processing, adjustment work of the approach angle of the strip-shaped film into the bag making machine, and the like. , The work can be easily performed.
In addition, the hands, arms, etc. are extended downward from the upper side of the carry-in side of the bag maker, for example, trying to come into contact with the product that is carried out from the package transport supply device and supplied to the bag maker, or the product is supplied by hand. Before the situation of attempting or attempting occurs, the second area sensor can detect the operation before the occurrence of the situation.
Further, the second area sensor can guard the upper part of the product, for example, the height of the detection area can be made as close as possible to the product, and the space above the product can be secured as a work space. The surface to be covered is a horizontal surface in the embodiment, but an inclined surface may be used. It is preferable that the horizontal plane can cover a wider range in the transport direction of the product / film in a shorter range.

(2) The detection area of the area sensor may include the area from the carry-out end side of the product transport supply device that supplies the product to the bag maker to the bag maker. In this way, it is possible to detect in advance that a part of the body such as a hand or an arm accidentally enters the transport area of the product that is carried out from the product transport supply device and supplied to the bag making machine. For example, it is possible to avoid the possibility that a part of the body gets caught in the product or the means for transporting the product and enters the bag making machine.

(3) the area sensor with respect to the bag unit may have a first area Sensor to the front side in the vertical direction in the plane of the pillow packaging machine and the sensing area. Generally, workers, etc. are located on the front side of the pillow wrapping machine, so they often extend their hands, arms, etc. from the front side to the back side. Can work effectively against . The other hand, to the back side of the pillow packaging machine, and various control panels and other wall-box or the like is present, to the pillow packaging machine in the packaging process, such as a hand worker towards from the back side to the front It usually doesn't happen. Therefore, it is good that at least the first area sensor and the second area sensor are arranged so that the monitoring can be performed efficiently . Plane up and down direction, while the vertical plane in the embodiment, may be inclined. A vertical plane is preferable because it can cover a wide range in the vertical direction in a short range .

(4) The surface of the detection area of the second area sensor may be arranged within the vertical range of the detection area of the first area sensor. In this way, even if an attempt is made to insert a hand, arm, or the like diagonally downward from above the upper end of the detection area of the first area sensor, such an action can be reliably detected by the second area sensor.

(5) A cover may be provided to cover the device arranged on the downstream side of the bag making device, and the detection area of the first area sensor may include the area from the downstream side of the bag making device to the cover side. In this way, safety measures can be taken over a wide range from the bag making device to the device. The device corresponds to a restraining belt device in the embodiment. The cover is on the downstream side of the bag making device, and when a plurality of covers are provided as in the embodiment, the cover on the bag making device side corresponds to the cover.

(6) The second area sensor may be attached to a tension arm that supports a tension roller arranged immediately before the bag making device among the rollers on which the film supplied to the bag making device is hung. .. In this way, since there is no member for attaching the second area sensor on the main body side of the pillow packaging machine, the work is easy, and it is necessary to consider that the tension roller and the tension arm do not interfere with the sensor bracket 35 in the design. It's okay because there isn't.

According to the present invention, it is possible to secure a work space around the bag making device by turning off the operation of the area sensor when the packaging process is not performed while ensuring the safety measures around the bag making device. it can.

It is a perspective view (the 1) which shows a preferable example of the pillow packaging machine which concerns on this invention. It is a perspective view (No. 2) which shows a preferable example of the pillow wrapping machine which concerns on this invention. It is a front view which shows the main part. It is a top view which shows the main part. It is a side view which shows the main part.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not construed as being limited to this, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

The pillow wrapping machine of the present embodiment is configured by arranging the product transport supply device 11 and the wrapping machine main body 12 in this order from the upstream side, and further providing a film supply device 13 above them. The product transport / supply device 11 is formed of a finger conveyor device that transports the product 1 at regular intervals and sequentially supplies the product 1 to the main body 12 of the packaging machine in the next stage. That is, the push-feeding fingers 6 are attached to the endless chains 5 hung between the sprockets arranged in the front-rear direction at regular intervals. The pushing finger 6 projects upward from the gap 7a formed between the receiving plates 7 arranged on the left and right. Then, by supplying the product 1 onto the receiving plate 7 between the front and rear push fingers 6, the product 1 is conveyed at the finger pitch of the push fingers 6.

The film supply device 13 is for continuously supplying the strip-shaped film 14 serving as the wrapping film for wrapping the product 1 to the wrapping machine main body 12. The film supply device 13 includes a support shaft 16 that supports a raw fabric roll 15 in which a strip-shaped film 14 is wound in a roll shape. The support shaft 16 is supported by a cantilever support for the box 22 which is vertically arranged on the back side of the pillow wrapping machine. Further, the film supply device 13 includes a roller 17 for transporting the strip-shaped film 14 continuously drawn from the original roll 15 by a predetermined transport path and guiding the strip-shaped film 14 to the carry-in portion of the packaging machine main body 12. The roller 17 includes a drive roller that drives the strip-shaped film, a tension roller that applies tension, and a free roller that changes the transport direction of the strip-shaped film 14 and guides the transport. Further, among the plurality of rollers, the tension roller 18 is arranged at the most downstream side in the film transport direction, that is, immediately before the wrapping machine main body 12. The tension roller 18 is supported by tension arms 19 arranged on both left and right sides of the strip-shaped film 14 in the transport direction. Further, the tension roller 18 can move along the guide hole 19a formed in the longitudinal direction of the tension arm 19. That is, when the handle 20 mounted on one end side of the tension roller 18, for example, the front side of the pillow wrapping machine is operated and tightened, the tension roller 18 is fixed to the tension arm 19, and when the handle 20 is operated and loosened, the tension roller 18 is fixed. 18 becomes movable along the guide hole 19a. Further, the tension arm 19 is attached to the fixing plate 21 in a state where it can be rotated within a predetermined angle range at the upper end thereof, and is configured to be able to be held at a desired angle. Further, various rollers 17 described above are supported by bearings on the fixed plate 21.

Further, instead of the drive roller that drives the strip-shaped film 14, the output of the drive motor (for example, a speed-controllable motor such as a servomotor) is linked to the support shaft 16, and the rotation speed of the original roll 15 is appropriately adjusted. The strip-shaped film may be supplied to the packaging machine main body 12 at a constant speed while being controlled.

The wrapping machine main body 12 is provided with a bag-making device 23 on the carry-in side, and the band-shaped film 14 supplied from the film supply device 13 is passed through the bag-making device 23 to form a tubular film. Then, both side ends of the strip-shaped film are overlapped with each other in a state of protruding downward from the bag making device 23. The product 1 sequentially carried out from the product transport supply device 11 is supplied into the bag making device 23. As a result, the product 1 is supplied into the strip-shaped film that is made into a tubular bag at predetermined intervals, and thereafter, the product 1 is contained in the strip-shaped film that is made into a tubular bag. As it is, it is conveyed together with the film.

The wrapping machine main body 12 has a center seal device 24 for center-sealing a portion of the band-shaped film that has passed through the bag-making device 23 and overlaps both side edges on the downstream side of the bag-making device 23. It is provided with a top sealing device 25 or the like that seals and cuts a predetermined position (a portion where the product does not exist) of the center-sealed tubular film in the lateral direction. As a result, the tip portion (the portion containing the leading product) of the tubular film is separated, and a package containing the product is manufactured. This package is carried out by a conveyor (not shown). A lower transport belt is arranged between the center seal device 24 and the top seal device 25. The lower transport belt constitutes a transport path for the tubular film containing the product 1. Further, a restraining belt device 28 is installed above the lower transport belt. The upstream end of the holding belt 28a of the holding belt device 28 is located near the carry-out side end of the bag making device 23, and the downstream end of the holding belt 28a is located immediately near the upstream side of the top sealing device 25. A tubular film is sandwiched between the restraining belt 28a and the lower transport belt to prevent the product 1 from being lifted upward so that the product 1 can be transported while maintaining a horizontal state.

Then, the first cover 26 is arranged so as to cover the surrounding / upper space of a part (downstream side) of the holding belt device 28. Further, the second cover 27 is arranged so as to cover the space around and above the top seal device 25. Both the first cover 26 and the second cover 27 maintain the illustrated closed state during the operation of the pillow wrapping machine to prevent workers and the like from accidentally contacting the sealing device and the like. On the other hand, when performing initial setting or maintenance prior to the packaging process, the first cover 26 and / or the second cover 27 are opened for processing. Since the basic configuration of the pillow packaging machine described above is the same as that of the conventional one, detailed description thereof will be omitted. In addition to the above-exemplified ones, various pillow wrapping machines may be used.

In the present embodiment, the area sensor is provided at a predetermined position in the installation area of the bag making device 23. The predetermined position is an area through which a person around the worker or the like passes when the pillow wrapping machine is in operation and the person, arm, or other part of the body approaches the bag making device 23. Is set in the detection area. In the present embodiment, the first area sensor 31 has a detection area in the vertical plane on the front side of the pillow wrapping machine with respect to the bag maker 23, and the detection area is in the horizontal plane above the carry-in side to the bag maker 23. It has a second area sensor 32.

The first area sensor 31 has a pair of sensor portions 31a, 31a standing on the front side of the pillow wrapping machine at predetermined positions in the front-rear direction along the transport direction of the tubular film / product 1 that has passed through the bag making device 23. The space between the pair of sensor units 31a and 31a is the detection area. One sensor unit 31a is arranged upright near the carry-out end of the product transport supply device 11, and the other sensor unit 31a is arranged upright near the first cover 26. One of the sensor units 31a is a light emitting unit and the other is a light receiving unit. The light emitted from the light projecting unit is received by the light receiving unit. If an object exists between the two, it will be shielded from light and will not be received by the light receiving unit, and the object will be detected. As a result, the front side of the pillow wrapping machine from the vicinity of the carry-out end of the product transport / supply device 11 to immediately before the first cover 26 becomes the detection area 33 of the first area sensor 31. Therefore, when a worker or the like on the front side of the pillow wrapping machine in the section tries to reach out and hold his hand above the bag making device 23, the first area sensor 31 outputs a detection signal. ..

The second area sensor 32 has a pair of sensor portions 32a, 32a on the upstream side of the carry-in port of the bag making device 23 and on the upper side of the upper surface of the bag making device 23, and is on both the left and right sides in the product transport direction. The space between the pair of sensor units 32a and 32a is the detection area. The sensor portions 32a and 32a are arranged so as to extend along the transport direction. One of the sensor units 32a is a light emitting unit and the other is a light receiving unit. The light emitted from the light projecting unit is received by the light receiving unit. If an object exists between the two, it will be shielded from light and will not be received by the light receiving unit, and the object will be detected. As a result, the detection area 34 of the second area sensor 32 becomes a horizontal plane at a predetermined height position above the bag making device 23 on the upstream side of the carry-in entrance of the bag making device 23. Further, in the present embodiment, the detection area 34 of the second area sensor 32 is located upstream of the transport path of the strip film 14 from the tension roller 18 to the bag making device 23, and the strip film 14 is the second area sensor. It is prevented from entering the detection area 34 of 32. Further, in the present embodiment, the second area sensor 32 is connected to the lower end of the tension arm 19 via the sensor bracket 35.

Next, the operation of the above-described embodiment will be described. For example, when a worker or the like is around an operating pillow wrapping machine and the worker's hand or the like touches the strip-shaped film 14 moving from the tension roller 18 toward the bag making device 23, the strip-shaped film 14 There is a risk that the film will be caught in the movement of the bag and will enter the bag making device 23 together with the strip film 14 as it is. Further, in the vicinity of the carry-out end of the product transport supply device 11, the push-feed finger 6 pushes the product 1 and sequentially supplies the product 1 into the bag making device 23. At this time, for example, a hand or the like is sent to the product 1 pushed in the vicinity of the carry-out end. If touched, the push finger 6 may be pushed into the bag making device 23 together with the product 1 and may be sandwiched between the bag making device 23 and the pushing finger 6. Further, for example, when a hand or the like touches a portion where the product 1 is not supplied between the push-feed fingers 6 near the carry-out end of the product transport / supply device 11, the product contacts the subsequent push-feed fingers 6 and is pushed as it is to make a bag. There is a risk of being pinched between the push finger 6 and the push finger 6. Furthermore, there is a risk that a finger may be caught in the restraining belt 28a in an attempt to arrange the passage of the film after passing through the bag making device 23, or a finger may be caught between the restraining belt 28a and the lower transport belt. ..

In the pillow wrapping machine of the present embodiment described above, since the first area sensor 31 and the second area sensor 32 are arranged around the bag making device 23, these area sensors are operated during the operation of the wrapping process of the pillow wrapping machine. Then, for example, the operation of putting a hand from the front side to the back side of the pillow wrapping machine is performed so as to touch the strip-shaped film 14 in the upper space on the upstream side of the carry-in entrance of the bag making device 23. , The operation of putting a hand from the front side to the back side of the pillow wrapping machine so as to touch the product 1 or the like moving near the carry-out end of the product transport supply device 11, or the downstream side of the bag making device 23. If you move your hand from the front side to the back side of the pillow wrapping machine so that you touch the moving tubular film, etc., the detection area of the first area sensor 31 will be the detection area of your hand / arm. Etc. will cross, and the first area sensor 31 outputs a detection signal.

Further, for example, the product 1 that moves near the carry-out end from the upstream side of the bag-making device 23 and the vicinity of the carry-out end of the product transport / supply device 11 and supplies the product 1 to the bag-making device 23 or the push-feed finger 6 that pushes the product 1 thereof. On the other hand, when the worker moves his / her hand from above to below, his / her hand / arm or the like crosses the detection area of the second area sensor 32, and the second area sensor 32 moves. Output the detection signal.

As a result, when a worker or the like tries to touch the periphery of the bag making device 23, at least one of the first area sensor 31 and the second area sensor 32 can detect the hand or the like. Then, based on the detection signal, safety measures are taken, for example, by temporarily stopping the pillow wrapping machine.

On the other hand, when the band-shaped film 14 is hung on each roller 17 and the tension roller 18 before the start of the packaging process, the relative position of the tension roller 18 with respect to the tension arm 19 and the angle of the tension arm 19 are adjusted. The detection processing of the area sensor 31 and the second area sensor 32 is stopped, and various processes are executed in the stopped state. Then, since the monitoring operation of the first area sensor 31 and the second area sensor 32 is stopped, nothing exists in the detection area and a work space is secured, so that the above-mentioned film threading work and adjustment work can be easily performed. It is good because it can be done.

In the above-described embodiment, two area sensors, a first area sensor 31 and a second area sensor 32, are provided, but the present invention is not limited to this, and may be three or more, or one. .. However, it is preferable to arrange two as in the embodiment because it can efficiently cover a wide range.

In the above-described embodiment, an example applied to a horizontal pillow wrapping machine in which the film supply device is located on the upper side of the bag making device and the overlapping end of the film is located on the lower side is shown, but the film supply device is manufactured. It may be applied to a reverse pillow wrapping machine which is located below the bag and has a film overlapping end formed on the upper side of the bag. However, a normal pillow wrapping machine as in the embodiment is more preferable because the film supply device is arranged above the bag making device and the problem of the present invention appears remarkably.

Although various aspects of the present invention have been described above with reference to embodiments and modifications, these embodiments and descriptions have not been made for the purpose of limiting the scope of the present invention, and are intended for understanding the present invention. It should be added that it was provided to contribute. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described herein, but also includes combinations of various aspects of the invention disclosed herein. Of the present invention, the configuration for which a patent is sought is specified in the appended claims, but even if the configuration is not currently specified in the claims, it is disclosed in the present specification. I would like to mention that there is a possibility of claiming a patent for this configuration in the future.

1: Product 11: Product transport and supply device 12: Packaging machine body 13: Film supply device 14: Strip film 18: Tension roller 19: Tension arm 23: Bag making device 24: Center seal device 25: Top seal device 26: First Cover 27: Second cover 31: First area sensor 31a: Sensor unit 32: Second area sensor 32a: Sensor unit

Claims (6)

An area sensor is placed in the installation area of the bag making machine of the pillow wrapping machine.
The detection area of the area sensor is set so as to detect the entry into the space on the upstream side of the carry-in entrance of the bag making device.
A pillow wrapping machine having a second area sensor whose detection area is a surface covering the upper part of the product on the carry-in side to the bag making machine. The pillow wrapping machine according to claim 1, wherein the detection area of the area sensor includes a portion from the carry-out end side of the product transport supply device for supplying the product to the bag maker to the bag maker. .. The pillow packaging according to claim 1 or 2, wherein the area sensor has a first area sensor whose detection area is in a plane in the vertical direction on the front side of the pillow packaging machine with respect to the bag making device. Machine. The pillow wrapping machine according to claim 3, wherein the surface of the detection area of the second area sensor is arranged within a range in the vertical direction of the detection area of the first area sensor. A cover covering the device arranged on the downstream side of the bag making device is provided.
The pillow wrapping machine according to claim 3 or 4, wherein the detection area of the first area sensor includes the area from the downstream side of the bag making device to the cover side. The second area sensor is characterized in that it is attached to a tension arm that supports a tension roller arranged immediately before the bag making device among the rollers on which the film supplied to the bag making device is hung. The pillow packaging machine according to any one of 1 to 5.

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