JP2694096B2 - Packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for agricultural products, which wraps an article to be packaged (eg, vegetables such as lettuce and cabbage, or fruits such as melon and apple) in a packaging sheet.

[0002]

2. Description of the Related Art As a packaging apparatus as described above, there is the following one. In other words, a packaging table having an opening into which the package falls is provided, the packaging sheet cut to a predetermined length is placed on the packaging table, and the package is dropped into the opening from above. As a result, the packaging sheet is squeezed at the outer edge of the opening, and the object to be packaged is wrapped in the packaging sheet and supported by the lower support table. This is a configuration in which fastening is performed.

Some of the above-mentioned packaging devices are provided with a pull-out mechanism for pulling out a wide packaging sheet, which is wound and supported in a roll shape, on the packaging table by a predetermined length as a pre-stage of the packaging work. . In this case, it is provided with a pulling mechanism capable of holding the end of the packaging sheet and reciprocally moving on the packaging table, and a cutter for cutting the roll-shaped portion side of the packaging sheet (see FIGS. 1 and 2 of the present invention). (Refer to the drawing mechanism 58 and the cutter 59). With the above structure,
The pull-out mechanism moves to the side of the roll-shaped portion of the packaging sheet to clamp the end of the packaging sheet, and then the pull-out mechanism moves in the opposite direction to pull out the packaging sheet onto the packaging table.
Marks are provided on the wrapping sheet at predetermined intervals along the longitudinal direction, and when the optical sensor provided near the cutter detects the mark on the wrapping sheet, the drawer mechanism is stopped and the cutter is lowered. Then, the packaging sheet is cut. In this way, the distance between the marks provided on the packaging sheet corresponds to the predetermined length of the packaging sheet to be cut, and after cutting, the drawer mechanism further moves to the drawer side of the packaging sheet to open the packaging table. The cut packaging sheet is placed at a predetermined position on the hole.

In this structure, when the pulling-out mechanism pulls out the packaging sheet, the packaging sheet pulled out to a predetermined length is cut by a cutter, and the packaging sheet cut to a predetermined length is placed at a predetermined position on the opening. The pulling-out mechanism is stopped during the two positioning operations. In this case, the mark provided on the packaging sheet is detected by an optical sensor, and the drawing mechanism is stopped at the time of cutting with the cutter. Further, even when the drawing mechanism is stopped at a predetermined position on the opening, an optical sensor for detecting the mark on the packaging sheet and stopping the drawing mechanism is separately provided.

[0005]

In the above configuration, the optical sensor for stopping the pulling mechanism when the packaging sheet pulled out to the predetermined length is cut by the cutter is arranged near the cutter. The optical sensor that stops the pull-out mechanism when the packaging sheet cut into a predetermined length is positioned at a predetermined position on the opening is arranged near the opening of the packaging table. Since this packaging device is configured to perform packaging by inserting an object to be packaged into the opening of the packaging table, an operator puts his hand near the opening of the packaging table to perform various operations. In this packaging device, the vicinity of the opening serves as a working section for workers. Therefore, if the light sensor is arranged in the work section for the worker, the light sensor may be an obstacle for the worker. Moreover, there is a possibility that the optical sensor itself or the frame supporting the optical sensor may be touched by a hand or an object to be packaged and damaged. INDUSTRIAL APPLICABILITY The present invention is configured so that an optical sensor or the like for stopping the pull-out mechanism does not hinder the work when the pull-out mechanism is stopped so as to position the packaging sheet cut into a predetermined length at a predetermined position on the packaging table. The purpose is to do.

[0006]

The feature of the present invention resides in that the packaging device as described above is provided with the following configuration. That is, it is possible to hold the end of the packaging sheet rolled into a roll and to pull it out on the packaging table, and to move the reciprocating movement on the packaging table and the predetermined position on the side of the rolled portion of the drawn packaging sheet. A cutter for cutting, and for detecting the presence or absence of marks provided at predetermined intervals along the longitudinal direction of the packaging sheet, with an optical sensor provided in the vicinity of the cutter,
When the optical sensor detects the mark after the pulling-out mechanism starts to pull out the packaging sheet, the packaging sheet starts from the first control unit that stops the pulling-out mechanism and cuts the cutter, and the position where the pulling-out mechanism is stopped by the first control unit. Is provided at a predetermined position near the center on the packaging table, and second control means for moving and operating the pull-out mechanism by a preset distance based on the movement amount detection means.

[0007]

With the construction of the present invention, the drawing of the packaging sheet in the packaging apparatus is performed as follows. For example, the state shown in FIGS. 2 and 9 is a state in which one packaging is completed, and the pulling-out mechanism 58 moves to the holding position on the side of the cutter 59 in order to pull out the packaging sheet 1 for the next packaging on the packaging table. It's been done. Then, as shown in FIG. 10, the pull-out mechanism 58 stops at the sandwiching position to sandwich the end portion 1b of the packaging sheet 1, and as shown in FIG. Pull out on the packaging table. As shown in FIG. 7, marks 1d are provided at predetermined intervals along the longitudinal direction of the packaging sheet 1. As a result, the packaging sheet 1 is pulled out to
As shown in (a) and FIG. 12, when the mark 1d of the packaging sheet 1 reaches the position of the optical sensor 87 and the optical sensor 87 detects the mark 1d of the packaging sheet 1, the pull-out mechanism 58 is stopped and the cutter 59 is provided. The roll-shaped portion side of the packaging sheet 1 is cut by (see FIG. 2). When the cutting by the cutter 59 is completed, as shown in FIG. 7, a preset distance N1 (in the structure shown in FIG.
Corresponding to the distance between the other mark 1c and the predetermined position 2a of the packaging table 2), the pulling-out mechanism 58 is moved to the right side of the drawing and stopped, and the cut packaging sheet 1 becomes the predetermined position 2a of the packaging table 2. It comes to the top (in the structure shown in FIG. 7, another mark 1c of the packaging sheet 1 comes to a predetermined position 2a of the packaging table 2).

As described above, according to the present invention, when the pulling-out mechanism is stopped when the packaging sheet cut into the predetermined length is positioned at the predetermined position on the packaging table, the mark on the packaging sheet is detected and the pulling-out mechanism is activated. An optical sensor or the like for stopping is not used, and the drawer mechanism is stopped at the above-mentioned position by a preset distance and the movement amount detection means for the drawer mechanism. As a result, for example, as shown in FIG. 1, in the vicinity of the predetermined position 2a on the packaging table 2,
It is not necessary to dispose the optical sensor and the frame that supports the optical sensor, which bother the operator.

[0009]

As described above, when the drawer mechanism is stopped so as to position the packaging sheet cut into the predetermined length at the predetermined position on the packaging table, it is possible for the operator to approach the predetermined position on the packaging table. The optical sensor and the frame that supports it can be eliminated,
The workability of packaging was able to be improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the entire packaging device of the present invention,
The packaging operation in this packaging apparatus is performed in the following steps. That is, the step of dropping the article A to be packaged from above into the opening 2a (corresponding to a predetermined position) of the packaging table 2 on which the packaging sheet 1 is placed (this is done by the operator), the opening 2a to be packaged by the packaging sheet 1
And wraps the package A on the support table 3 below the packaging table 2.
The step of supporting, the step of narrowing down the upper part of the packaging sheet 1 wrapping the article A on the support base 3 from the lateral direction, the step of cutting out the narrowed upper part of the packaging sheet 1, the part of the cut packaging sheet 1. A step of attaching the adhesive tape 4 to the above, a step of pressing the attached adhesive tape 4 from above, a step of laterally ejecting the packaged object A from the support base 3, and winding in a roll form in preparation for the next packaging. This is a process of pulling the wrapping sheet 1 on the wrapping table 2 by a predetermined length, cutting the roll side portion, and placing one wrapping sheet 1 on the wrapping table 2.

(1) First, the configuration of each mechanism in the step of drawing the packaging sheet 1 for the next packaging operation onto the packaging table 2 as the final step of one packaging operation will be described.
As shown in FIGS. 1 and 2, the transparent packaging sheet 1 is wound in a roll shape and supported by a pair of support rollers 56a and 56b, and the tip of the packaging sheet 1 is paired with upper and lower feeding rollers 57a and 57b. It is pinched. Support frame 61 extended from the support roller 56a on the right side of the drawing
The upper feeding roller 57a is supported by
The gear 62 fixed to the support roller 56a is the support frame 6
1 is engaged with the gear 63, and the gear 63 and the feeding roller 5
A transmission chain 64 is laid across 7a. A drive gear 65 for driving the gear 62 and a motor 66 are provided, and the support roller 56 a and the feeding roller 57 are provided.
a is rotationally driven, and the other support roller 56b and the feeding roller 57b are freely rotated.

Next, the first pedestal 67 and the second pedestal 68 that support the packaging sheet 1 from below when the packaging sheet 1 is cut will be described. As shown in FIGS. 2 and 5, on the lower right side of the drawing rollers 57a and 57b, a first receiving table 67 and a second receiving table 68, each having a width larger than the width of the packaging sheet 1, are provided. The first receiving table 6 is provided at a predetermined interval (for allowing a cutter 59 to be described later to enter).
7 is set at a position slightly lower than that of the second receiving table 68.

Next, a cutter 5 for cutting the packaging sheet 1
9 and the like will be described. As shown in FIGS. 3 and 4, guide poles 69 are provided on the left and right sides of the first and second receiving stands 67 and 68, and the support frame 70 is vertically slidable on the guide pole 69 via the boss 70a. Supported. One drive shaft 82 is rotatably mounted below the second receiving table 68, and the operation plate 8 fixed to the left and right of the drive shaft 82.
2a and a link 83 is provided between the left and right boss portions 70a of the support frame 70, and a driving motor 84
A transmission chain 85 is provided between the drive shaft 82 and the drive shaft 82.

A plate-shaped cutter 59 having a width larger than the width of the packaging sheet 1 is fixed to the support frame 70, and a plate-shaped pressing member 60 having a width of about 1/2 of the packaging sheet 1 is a cutter. There are four in total, two on the front left and right of 59 and two on the rear left and right. Each holding member 6
A rubber material 60a is attached to the lower surface of the support frame 70, and each pressing member 60 can move up and down on the support frame 70, and
It is provided in a state of being biased downward by a spring 60b. Then, as shown in FIG. 2, the rubber member 60 a of the pressing member 60 is set to protrude below the lower end of the cutter 59 when the support frame 70 is raised.
With the above structure, when the drive shaft 82 is driven one rotation in the state shown in FIG. 3, the cutter 59 descends to cut the packaging sheet 1 and returns to the position shown in FIG. 3, as described later.

Next, the pull-out mechanism 58 for pulling out the packaging sheet 1 onto the packaging table 2 will be described. As shown in FIG. 2, guide rails 2b provided on both the left and right sides of the packaging table 2
A pair of support plates 71 are slidably supported along, and sprockets 72 are supported on the left and right of the end on the second receiving table 68 side of the packaging table 2 and on the left and right of the opposite end. A pair of left and right chains 73 is wound around a sprocket 72, and the left and right chains 73 are connected to the left and right support plates 71. Thus, by driving the right and left sprockets 72 on the second receiving table 68 side forward and backward by the motor 91 (see FIG. 18), the drawing mechanism 58 (the left and right support plates 71) is slid along the packaging table 2. I do.

As shown in FIGS. 1, 2, and 6, a single support shaft 74 is provided over the left and right support plates 71, and five operation arms 58a are independently rocked on the support shaft 74. The rubber plate 5 is freely fitted on the back surface of the tip of the operation arm 58a.
8b is fixed. Further, a flat receiving base 76 is fixedly mounted on the left and right support plates 71 below the operation arm 58a. In this case, as shown in FIG. 2, the support plate 71 is slightly lower than the second receiving table 68 on the cutter 59 side.
The pedestal 76 is set to be positioned. Then, one frame 75 erected over the left and right support plates 71.
A spring 77 that urges each of the operation arms 58a toward the swinging side of the receiving base 76 is provided between the control arm 58a and each of the operation arms 58a.

The support shaft 74 is rotatably supported with respect to the support plate 71, and as shown in FIGS.
Arms 74a are fixed to the left and right of
One rod 74b is erected and fixed over a. A link 79 is provided over a fan-shaped gear 78 swingably supported by one support plate 71 and one arm 74a, and a motor 80 and a pinion gear 81 for driving the fan-shaped gear 78 are provided. I have. In the state shown in FIG. 2, the motor 80 is driven to pull down the rod 74 b and each operating arm 5
8a is being lifted from the pedestal 76, and when the motor 80 is driven in the reverse direction to pull up the rod 74b as described later, the urging force of each spring 77 causes each operation arm 58a to descend to the pedestal 76 side. The packaging sheet 1 is sandwiched between them.

(2) Next, the initial state of the packaging work for installing the roll-shaped packaging sheet 1 on the support rollers 56a and 56b will be described. When the packaging sheets 1 having different widths are installed on the support rollers 56a and 56b as described later, the center of the width of the roll portion of the packaging sheet 1 is located at the center of the width of the support rollers 56a and 56b regardless of the width. In other words, when the packaging sheet 1 is pulled out by the pull-out mechanism 58 as described later, the packaging sheet 1 is placed so that the second mark 1d of the packaging sheet 1 shown in FIG. .

As shown in FIG. 18, a cutting switch 93 that can drive only the motor 84 for the cutter 59 and a feeding switch 94 that can drive only the motor 66 for the support roller 56a and the feeding roller 57a are provided. There is. When the cut switch 93 is pressed once,
The motor 84 operates from the state shown in FIG.
Descends, rises to the original position again, and the motor 84 stops. The delivery switch 94 is biased toward the return side,
Only while the push-out switch 94 is being pressed,
The motor 66 for the support roller 56a and the feeding roller 57a operates, and when the feeding switch 94 is released, the motor 66 stops.

The vicinity of the first end of the packaging sheet 1 is shown in FIG.
In many cases, the unprinted extra portion such as the first mark 1c as shown in FIG. Therefore, the packaging sheet 1 is installed, and the first end thereof is moved up and down by the feed rollers 57a and 57a.
When it is inserted between 57b, the feeding switch 94 is pushed and an extra portion of the packaging sheet 1 is fed. Then, the first first mark 1c is positioned at a predetermined position (FIG. 2).
When the end 1b of the packaging sheet 1 to be cut comes to a position directly below the cutter 59 as shown in FIG. 12), the feeding of the packaging sheet 1 is stopped, and the cutting switch 93 is pressed. It cuts off the excess and removes it.

(3) Packaging sheet 1 for the next packaging operation
The flow of operation of each mechanism in the process of pulling out the paper on the packaging table 2 will be described. When the packaging sheet 1 is installed as in (2) above and the start switch 95 of the packaging device shown in FIG. 18 is pressed, a single packaging operation as described in (6) below is performed first. However, in this case, since the article A to be packaged has not been put into the opening 2a of the packaging table 2, the packaging apparatus is idle.

The state shown in FIGS. 1 and 2 is a state in which one wrapping is completed, and the pulling mechanism 58 causes the cutter 59 to pull out the wrapping sheet 1 for the next wrapping onto the wrapping table 2.
Before and after moving to the side. Then, as shown in FIG. 9, when the drawer mechanism 58 reaches the position of the second pedestal 68 and stops (the operation arms 58 of the drawer mechanism 58).
a is in a state of being lifted from the pedestal 76), the drive gear 65
Is driven to rotate the support roller 56a in the clockwise direction, the feeding roller 57a is driven to rotate in the counterclockwise direction, and the end portion 1b of the packaging sheet 1 is fed from the second cradle 68 to the pull-out mechanism 58 side. Go.

The drive gear 65 makes one rotation, and the notch portion 65a (see FIG. 2) of the drive gear 65 having no gear teeth moves to the gear 62.
Is reached, the motor 66 stops and the support rollers 56a
And the feeding roller 57a also stops. In this state, as shown in FIG. 9, the end 1b of the packaging sheet 1 is sufficiently inserted between the operation arm 58a of the drawer mechanism 58 and the receiving base 76, and then the motor 80 of the drawer mechanism 58 operates. The rod 74b is lifted up, and each operating arm 58a is lowered to the receiving base 76 side by the urging force of each spring 77, and FIG.
As shown in FIG. 0, the end 1b of the packaging sheet 1 is sandwiched between the operation arms 58a and the receiving table 76.

Next, as shown in FIG. 11, the pull-out mechanism 58 moves to the right side of the drawing with the end portion 1b of the packaging sheet 1 held therebetween, and the packaging sheet 1 is pulled out onto the packaging table 2. In this case, the notch 65a of the drive gear 65 is
2, the gear 62 is freely rotatable, so that the gears 62, 63, the support rollers 56a,
The drawing roller 56b and the feeding rollers 57a and 57b rotate freely as shown in FIG.

As shown in FIG. 7, the packaging sheet 1 is transparent, but the first mark 1c indicating the type and manufacturer of the article A to be packaged is placed at the center position in the width direction of the packaging sheet 1 in the longitudinal direction. Are printed at predetermined intervals along the line. The second mark 1d is printed at a position separated from the center of the first mark 1c by a first predetermined interval L1 along the horizontal width direction and a second predetermined interval M1 longitudinally rearward from the center of the first mark 1c. . As shown in FIGS. 1 and 7, a reflection type optical sensor 87 having a light emitting device and a light receiving device is provided on a frame 86 fixed to the packaging table 2.

With the structure described above, the packaging sheet 1 is pulled out by the pulling-out mechanism 58, and the packaging sheet 1 shown in FIGS.
2, the second mark 1d of the packaging sheet 1 reaches the position of the optical sensor 87, and the detection light from the light emitter of the optical sensor 87 is reflected by the second mark 1d and detected by the light receiver of the optical sensor 87. Then, the drawer mechanism 58 is temporarily stopped at that position. In this case, as shown in FIGS. 12 and 2, when the drive gear 65 is rotationally driven in the counterclockwise direction of the drawing by a predetermined angle and the gear teeth of the drive gear 65 mesh with the gear 62,
The motor 66 stops at this angle. As a result, the gears 62 and 6 which were freely rotated when the packaging sheet 1 was pulled out.
3, the support rollers 56a and 56b, and the feeding rollers 57a and 57b are also stopped, and the pull-out mechanism 58
The rotation of the roll-shaped portion of the packaging sheet 1 is braked at the same time as the stop, and the roll-shaped portion of the packaging sheet 1 and the pull-out mechanism 58 are not wavy or wrinkled.

Next, as shown in FIG. 13, the supporting frame 70 provided with the cutter 59 and the pressing member 60 is operated to descend (the above is equivalent to the first control means). In this case, FIG.
As shown in FIG. 5, the rubber member 60a of the pressing member 60 projects below the lower end of the cutter 59, so when the support frame 70 is moved down, the four pressing members 60 in front of and behind the cutter 59 are The packaging sheet 1 is pressed against the first and second pedestals 67 and 68 to hold the packaging sheet 1. Next, the cutter 59 attaches the first and second pedestals 67, 68.
Then, the packaging sheet 1 is cut at a stretch. When the packaging sheet 1 is pulled out and cut in this way, the first mark 1c is located at the center in the longitudinal direction of the cut packaging sheet 1 as shown in FIG.

When the cutting of the packaging sheet 1 is completed in the state shown in FIG. 13, the supporting frame 70 equipped with the cutter 59 and the pressing member 60 is moved up to its original position and at the same time,
As shown in FIGS. 14 and 7, the pull-out mechanism 58 moves to the right side of the drawing by a distance N1 (the distance between the first mark 1c of the packaging sheet 1 and the opening 2a of the packaging table 2), and stops and cuts. The first mark 1c of the formed packaging sheet 1 is placed at the position of the opening 2a of the packaging table 2 (see FIG. 7B) (corresponding to the second control means). After that, each operation arm 58a of the pull-out mechanism 58 is lifted from the pedestal 76 to separate the end 1b of the packaging sheet 1, and one packaging sheet 1 cut to a predetermined length is placed on the packaging table 2. Is done.

As shown in FIGS. 1 and 18, the second pedestal 6
A potentiometer 88 (corresponding to a moving amount detecting means) is provided on the sprocket 72 on the eighth side to detect the position of the pull-out mechanism 58. In this case, the operation of stopping the pulling-out mechanism 58 when it reaches the holding position (see FIG. 9) which is the position of the second pedestal 68, and the first of the cut packaging sheet 1
The two operations of stopping when the mark mechanism 1 reaches the position where the drawing mechanism 58 moves until the mark 1c reaches the position of the opening 2a of the packaging table 2 (see FIG. 7B), the potentiometer 8
It is based on the detection signal from 8. And FIG.
As shown in (a), when the packaging sheet 1 is pulled out to the length to be cut, the operation of stopping the pulling-out mechanism 58 is
This is performed based on the detection of the optical sensor 87.

(4) In this packaging device, three types of packaging sheets 1 having different widths depending on the size of the article A to be packaged 1,
89 and 90 are configured so that they can be used. Next, a description will be given of a configuration in which the pull-out length is changed corresponding to these three types of packaging sheets 1, 89 and 90. As shown in FIG. 8, packaging sheets 1, 8 having three types of large, medium, and small widths
9, 90, the first mark 1c, 89a, 90a, at the central position in the width direction of the packaging sheet 1, 89, 90,
It is printed at predetermined intervals along the longitudinal direction. In this case, the narrower the width of the packaging sheet 1, 89, 90, the first
The predetermined interval between the marks 1c, 89a, 90a is narrow. From the center of the first marks 1c, 89a, 90a to the first predetermined interval L1 (common to each packaging sheet 1, 89, 90) along the lateral width direction, from the center of the first marks 1c, 89a, 90a,
The second marks 1d, 89b, 90b are printed at positions rearward in the longitudinal direction by the second predetermined intervals M1, M2, M3. In this case, the packaging sheet 1 having a large width has a second predetermined distance M1, and the packaging sheet 89 having a medium width has a second predetermined distance M2.
The packaging sheet 90 having a small width has the second predetermined interval M3.

The position of the optical sensor 87 on the packaging device side does not change with respect to the packaging sheets 1, 89, 90 described above.
Therefore, as shown in FIG. 8, when the packaging sheets 1, 89, 90 are pulled out by the pull-out mechanism 58, the position where the pull-out mechanism 58 stops based on the detection of the optical sensor 87, that is, the packaging sheets 1, 89, 90. End 1b of
Since the positions of 89c and 90c are different from each other, the first marks 1c, 89a and 90a are located at the centers in the longitudinal direction of the respective wrapping sheets 1, 89 and 90 cut by this.

In each of the packaging sheets 1, 89 and 90, FIG.
As shown in the figure, after cutting, each packaging sheet 1
When the drawer mechanism 58 is slid so that the first marks 1c, 89a, 90a of 89, 90 are positioned in the opening 2a of the packaging table 2, the distances N1, N2, N3 are different. In this case, the distance is N1 for the packaging sheet 1 having a large width, the distance N2 for the packaging sheet 89 having a medium width, and the distance N3 for the packaging sheet 90 having a small width.

Therefore, when one of the three types of packaging sheets 1, 89, 90 having different widths is selected, the operator operates the selection switch 92 shown in FIG. 18 in advance to select the selected packaging sheet 1. , 89, 90 is the distance N
1, N2, and N3. As a result, after the cutting, the pull-out mechanism 58 moves by the distances N1, N2, N3 corresponding to the respective packaging sheets 1, 89, 90, and the first marks 1c,
89a and 90a are located in the opening 2a of the packaging table 2 (corresponding to a second control means).

(5) In this packaging device, the drawer mechanism 5
8 is provided with an abnormality detection function for movement and stop as described above. Next, regarding this abnormality detection function, FIG.
0 will be described. As shown in FIG. 9, it is assumed that one wrapping is completed and the drawer mechanism 58 returns to the holding position. In this case, since the operation arm 58a of the drawer mechanism 58 enters just below the optical sensor 87, the detection light from the light emitter is reflected, and the optical sensor 87 is in the detection state (ON state). Therefore, when the optical sensor 87 is in the ON state (step S1), if the potentiometer 88 for the drawer mechanism 58 shown in FIG. 1 does not output a signal corresponding to the holding position (step S2), the optical sensor 87 or It is determined that the potentiometer 88 has an abnormality, the packaging is temporarily stopped, and the buzzer sounds (step S3).

On the contrary, when the optical sensor 87 is in the non-detection OFF state (step S1), if the potentiometer 88 for the pull-out mechanism 58 shown in FIG. 1 outputs a signal corresponding to the clamping position ( In step S4), it is determined that the optical sensor 87 or the potentiometer 88 is abnormal, the packaging is temporarily stopped, and the buzzer sounds (step S).
3).

Next, as shown in FIG. 11, the pull-out mechanism 5
8 supposes that the end 1b of the packaging sheet 1 has been normally clamped, and the packaging sheet 1 has been pulled out to the right in the drawing. in this case,
The position of the end 90c of the small width packaging sheet 90 (position of the end 90c in FIG. 8) is detected by the potentiometer 88 when the drawer mechanism 58 passes a predetermined position on the side of the cutter 59 slightly to the left of the paper. Then, if each part is normal, the pull-out mechanism 5
8, end portions 1b of the packaging sheets 1, 89, 90 shown in FIG.
89c, 90c, and the packaging sheets 1, 89, 9
The second mark 1d, 89b, 90b of 0 is the optical sensor 87.
Will be reached directly below.

When the pull-out mechanism 58 has passed the above-mentioned predetermined position (step S5) and the predetermined time has passed (step S6), if the optical sensor 87 is not turned on (step S7), the pull-out failure or the optical sensor is detected. It is determined that 87 is a detection failure. In this case, the drawer mechanism 58
1 and the cutter 59 is operated to stop the packaging sheet 1
At the same time, the pulling mechanism 58 is returned to the holding position shown in FIG. 9 and the packaging sheet 1 is again held and pulled out (steps 11 and 12). Then, when such a drawer failure or the detection failure of the optical sensor 87 occurs several times consecutively (steps S8 and S9), the packaging is temporarily stopped and a buzzer sounds (step S10).

Next, it is assumed that the pull-out mechanism 58 has passed the above-mentioned predetermined position (step S5), and after a predetermined time has passed (step S6), the optical sensor 87 is turned on. In this case, the pull-out mechanism 58 is stopped at the positions of the ends 1b, 89c, 90c of the packaging sheets 1, 89, 90 shown in FIG. Moves by distances N1, N2, and N3. Then, if the stop position of the pull-out mechanism 58 is the position of the end portion 1b, after this, it moves by the distance N1.
In other words, the position of the end 1b corresponds to the distance N1, the position of the end 89c corresponds to the distance N2, and the position of the end 90c corresponds to the distance N3.

In this case, the packaging sheets 1, 89,
According to 90, one of the distances N1, N2, and N3 should have been set by the selection switch 92 shown in FIG. 18, but the position where the drawer mechanism 58 stopped as described above,
The distances N1, N2,
N3 may be different (step 13). Therefore, if the packaging in such a state is performed several times consecutively (steps S14 and S15), the packaging is temporarily stopped and the buzzer sounds (step S16).

(6) After the one wrapping sheet 1 cut into a predetermined length as described above is placed on the wrapping table 2, the step of wrapping the article A to be wrapped will be described. . As shown in FIG. 15A, when the packaged object A is first dropped into the opening 2 a of the packaging table 2, the packaged object A falls into the lower support table 3 while being wrapped by the packaging sheet 1. .
When the operator pushes the start switch 95 shown in FIG. 18 in this state, the support base 3 is lowered as shown in FIG. 15B, and the packaging sheet 1 is squeezed at the outer edge of the opening 2a. . In this case, the plurality of rubber plate-shaped auxiliary diaphragm members 11
Is provided below the opening 2a so as to surround the article A to be packaged, and the packaging sheet 1 is further squeezed by the auxiliary throttle member 11.

Next, the pair of plate-shaped holding members 14 arranged on the lower side of the packaging table 2 are shown in FIGS.
As shown in (a), the sheet proceeds to the packaging sheet 1 side, and the upper portion 1a of the packaging sheet 1 is narrowed down. Thereby, the packaged object A is almost completely wrapped in the packaging sheet 1. Thereafter, as shown in FIG.
8 advances along the upper surface of the holding member 14, and the upper part 1a of the packaging sheet 1 is cut off.

Next, as shown in FIG. 16B, the adhesive tape 4 cut into a predetermined length is placed over the upper end of the packaging sheet 1 and the end of the sandwiching member 14, and FIG. As shown in, the sponge member 47 presses the adhesive tape 4 from above. Then, while the adhesive tape 4 is being pressed by the sponge 47, as shown in FIG. 17A, the pair of holding members 14 are operated to be opened, and the sponge member 47 is again pressed to the side of the article A to be adhered. Make sure that the tape 4 is firmly attached to the packaging sheet 1 (the above corresponds to the packaging means).

After that, as shown in FIG. 17B, the posture of the support base 3 is changed sideways, and the article A to be packaged is transferred to the side slide 55 and discharged outside the apparatus. FIG. 17C shows the state of the packaged object A that has been completely packaged in this way.
Shown in When one package is completed as described above, the process returns to the item (3), and the next packaging sheet 1 is pulled out and cut.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a packaging device viewed from above.

FIG. 2 is a side view of a support structure of a roll-shaped portion of a packaging sheet, a cutter and a holding member, and a vicinity of a drawer mechanism.

FIG. 3 is a side view showing an elevating structure of a cutter and a holding member.

FIG. 4 is a front view showing an elevating structure of a cutter and a holding member.

FIG. 5 is a plan view showing the vicinity of a roll portion and a feed roller of the packaging sheet.

FIG. 6 is a plan view of a drawer mechanism.

FIG. 7 is a plan view showing a state in which the packaging sheet is pulled out and stopped by the drawer mechanism.

FIG. 8 is a plan view when three types of packaging sheets having different widths are pulled out by a drawer mechanism.

FIG. 9 is a side view showing a state in which the packaging sheet is being fed to the side of the pulling mechanism that has reached the packaging sheet side.

FIG. 10 is a side view showing a state where an end portion of the fed out packaging sheet is held by a drawer mechanism;

11 is a side view showing a state in which the drawer mechanism is pulling out the packaging sheet from the state of FIG. 10;

FIG. 12 is a side view showing a state where the second mark of the packaging sheet is detected by the optical sensor and the drawer mechanism is stopped.

FIG. 13 is a side view showing a state where the cutter cuts the packaging sheet after the state of FIG. 12;

14 is a side view showing a state in which the drawer mechanism is pulling out the packaging sheet after the state in FIG. 13;

FIG. 15 is a perspective view showing a flow of wrapping from inserting the object to be packaged into the opening to narrowing down the wrapping sheet by the holding member.

FIG. 16 is a perspective view showing the flow of packaging from the cutting of the upper part of the packaging sheet to the pressing of the adhesive tape by the sponge member.

FIG. 17 is a perspective view showing the flow of packaging from the opening operation of the holding member to the release of the packaged object, and the state in which packaging is completed.

FIG. 18 is a circuit diagram showing a linked state of each switch, motor, and operation cylinder.

FIG. 19 is a diagram showing a flow of the first half of control of abnormality detection when the packaging sheet is pulled out.

FIG. 20 is a diagram showing the latter half of the flow of control for abnormality detection when pulling out a packaging sheet.

[Explanation of symbols]

 1, 89, 90 packaging sheet 1b, 89c, 90c packaging sheet end 1d, 89b, 90b packaging sheet mark 2 packaging table 2a packaging table predetermined position 58 drawer mechanism 59 cutter 87 optical sensor 88 movement amount detecting means N1, N2, N3 Distance A Packaged item

Claims (1)

(57) [Claims] 1. A packaging table (2) for placing packaging sheets (1), (89), (90) cut into predetermined lengths,
Packaging sheets (1), (89) on the packaging table (2),
A packaging device comprising a packaging means for wrapping an article to be packaged (A) placed on (90) in the packaging sheets (1), (89) and (90), which is wound in a roll shape. Packaging sheets (1), (89),
A pull-out mechanism (58) which can be pulled out on the packaging table (2) by sandwiching the ends (1b), (89c), (90c) of the (90), and which reciprocates on the packaging table (2); A cutter (59) for cutting a predetermined position on the roll-shaped portion side of the pulled-out packaging sheets (1), (89), (90).
And the marks (1) provided at predetermined intervals along the longitudinal direction of the packaging sheets (1), (89), (90).
d), (89b), and (90b) are detected, and an optical sensor (87) provided in the vicinity of the cutter (59) is provided, and the wrapping sheet (1) is provided by the drawer mechanism (58). ，
After the (89) and (90) are started to be pulled out, the optical sensor (87) causes the marks (1d), (89b),
When (90b) is detected, the wrapping is started from the first control means for stopping the drawer mechanism (58) and cutting the cutter (59), and the position where the drawer mechanism (58) is stopped by the first control means. Sheets (1), (89), (9
0) is located at a predetermined position (2a) near the center of the packaging table (2), and the distances (N1), (N2) and (N3) are preset based on the movement amount detecting means (88). A packaging device provided with a second control means for moving and operating the drawer mechanism (58).