JP2927655B2 - 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 an article to be packaged (for example, vegetables such as lettuce and cabbage, or fruits such as melon and apple).
For packaging agricultural products.

[0002]

2. Description of the Related Art A packaging apparatus as described above is provided with a packaging table for mounting a packaging sheet cut to a predetermined length.
When a packaging sheet of a predetermined length is placed on a packaging table, and an article to be packaged is placed on the packaging sheet on the packaging table, the packaging means is operated to automatically package the article to be packaged on the packaging sheet of the packaging table. There is something that is configured.

In this case, as shown in FIG. 14, for example, there is a packaging apparatus configured to automatically pull out and cut the packaging sheet 1 from the packaging table 2. As shown in FIG. 14 (a), a packaging sheet 1 wound in a roll is placed on one lateral side of the packaging table 2, and when one packaging is completed, the packaging sheet 1 on the opposite side of the packaging table 2 is placed. The drawer mechanism 16 waiting at the drawer position automatically advances to the side of the packaging sheet 1 wound in a roll. Then, the drawer mechanism 16 stops at the holding position shown in FIG.
The operation arm 19 of FIG. 6 clamps the end 1 b of the packaging sheet 1, and the pull-out mechanism 16 moves to the original pulling-out position again and pulls out the packaging sheet 1 onto the packaging table 2. FIG.
As shown in FIG. 4 (c), when the packaging sheet 1 is pulled out to a predetermined length by the drawer mechanism 16, the cutter 12 is automatically lowered and again raised, and the packaging sheet 1 is lifted.
Is cut to a predetermined length, and one packaging sheet 1 is
It is placed in the.

[0004]

In the packaging apparatus shown in FIG. 14, as shown in FIG.
6 reaches the clamping position from the pulling-out position side through the lower side of the cutter 12 and the operation arm 19 of the pulling-out mechanism 16.
Are configured to sandwich the end 1b of the packaging sheet 1.

Accordingly, if the drawer mechanism 16 is stopped at the clamping position and cannot move to the opposite drawer side due to some abnormality, if the cutter 12 is lowered in this state, 12 may come into contact with the drawer mechanism 16 and the drawer mechanism 16 and the cutter 12 may be damaged. An object of the present invention is to prevent the drawer mechanism and the cutter from being damaged due to the cutting operation of the cutter in a packaging device provided with such a drawer mechanism and the cutter.

[0006]

A feature of the present invention resides in the following configuration in the above-described packaging apparatus. In other words, the support portion that supports the rolled packaging sheet on the lateral side of the packaging table so as to be rotatable around the roll axis and the end portion of the roll-shaped packaging sheet supported by the support portion are sandwiched. A pull-out mechanism driven reciprocatingly over a pull-out position for pulling out the pinched packaging sheet onto the packaging table by a predetermined length while rotating the holding position, and the roll-shaped portion of the packaging sheet, and the drawer mechanism reaching the pull-out position. And a cutter for automatically cutting a predetermined position on the roll-shaped portion side of the packaging sheet when the packaging sheet is pulled out to a predetermined length on the packaging table, and whether or not the pull-out mechanism is present at the clamping position. If the position sensor detects the presence of the drawer mechanism even after the set time has elapsed since the drawer mechanism reached the pinching position, the cutter Are a restraint means for preventing.

[0007]

When constructed as in the present invention, for example, FIG.
As shown in (b), when one package is completed, the drawer mechanism 16 located at the drawer position advances toward the packaging sheet 1 and stops at the holding position (see FIG. 4 (b)). In this holding position, the drawer mechanism 16 holds the end 1b of the packaging sheet 1 and starts to pull out the packaging sheet 1 onto the packaging table 2 as shown in FIG.

In this case, if the respective parts are normal, the pull-out mechanism 16 moves within a set time after reaching the holding position in FIG. Have moved to. However, if the position sensor detects that the drawer mechanism 16 is still at the holding position even after the set time has elapsed after reaching the holding position, it is determined that an abnormality has occurred, and the packaging by the cutter 12 is performed. The cutting operation of the sheet 1 is not performed.

[0009]

As described above, if the drawer mechanism is still at the holding position after the set time has elapsed, it is determined that the drawer mechanism is abnormal and the cutting operation by the cutter is not performed. In addition, it was possible to prevent a state in which the cutter comes into contact with the draw-out mechanism and is damaged by the cutting operation. Thereby, the workability and durability of the drawer mechanism and the cutter in the packaging device can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a packaging device for agricultural products to which the present invention is applied will be described with reference to the drawings. (1) FIG. 1 shows the entire packaging apparatus. In this packaging apparatus, an opening 2a for dropping the packaged object A in the packaging table 2 is provided.
The packaging sheet 1 is wound in a roll shape on a pair of support rollers 5 (corresponding to a support portion) provided on the lateral side of the packaging table 2. Further, a drawer mechanism 16 for the packaging sheet 1 is provided on the opposite side of the packaging table 2.

(2) First, the flow of the entire packaging in the packaging apparatus of the present invention will be described with reference to FIGS. 8 (a) to 10 (c). When one wrapping is completed, the drawer mechanism 16 located at the position shown in FIG.
, And the packaging sheet 1 is pulled out by moving to the right again on the paper surface. When the drawer mechanism 16 pulls out the packaging sheet 1 by a predetermined length, the drawer mechanism 16 stops, the cutter 12 descends, and the packaging sheet 1 is cut. When the packaging sheet 1 is cut to a predetermined length in this manner, the drawer mechanism 16 further moves rightward on the paper surface, returns to the position shown in FIG. 1 and stops, and releases the end 1b of the cut packaging sheet 1. .

As described above, in the state where the packaging sheet 1 cut to the predetermined length is placed on the packaging table 2, as shown in FIG. When the package A is pushed down into the opening 2a, the packaged object A falls into the lower support 3 while being wrapped in the packaging sheet 1. Thereafter, when a pair of start switches (not shown) are simultaneously pressed and operated, a pair of left and right holding arms 36 provided on the support base 3 are swung to the package A side as shown in FIG. The object A to be packaged is held, and the support base 3 and the holding arm 3
6 is lowered and stopped at a predetermined position. In this case, a plurality of rubber plate-shaped auxiliary squeezing members 11 are provided below the opening 2a so as to surround the article to be packaged A, and the auxiliary squeezing members 11 further narrow the packaging sheet 1.

A pair of plate-like holding members 14 arranged on the lower side of the packaging table 2 advance to the packaging sheet 1 side as shown in FIGS. 1 is narrowed down by sandwiching the upper portion 1a. This allows
The article to be packaged A is almost completely wrapped in the packaging sheet 1. Thereafter, as shown in FIG. 9A, the pair of disk cutters 28 advances along the upper surface of the holding member 14, the upper portion 1a of the packaging sheet 1 is cut off, and compressed air is injected from the injection nozzle 6. Thus, the upper portion 1a of the packaging sheet 1 attached to the disk cutter 28 is blown off.

Next, as shown in FIG. 9 (b), the adhesive tape 4 cut to a predetermined length is placed over the upper end of the packaging sheet 1 and the end of the holding member 14, and FIG. As shown in FIG. 7, the adhesive tape 4 is pressed from above by the sponge member 7. Then, in a state where the adhesive tape 4 is pressed by the sponge member 7, the pair of holding members 14 are opened as shown in FIG. The tape 4 comes into close contact with the packaging sheet 1. Thereafter, as shown in FIG. 10B, the holding arm 36 is operated to open left and right, the support base 3 is operated to lie down, and the article to be packaged A is released from the slide 8 to the outside of the packaging device and collected. (The above is equivalent to packaging means). Then, the support base 3 is again moved up to the original position shown in FIG. 8 (a), and one package is completed, and the state of the packaged object A after the packaging is shown in FIG. 10 (c). .

(3) When one package is completed, the packaging sheet 1 is automatically pulled out from the rolled packaging sheet 1 for the next packaging and cut off. The structure for supporting the packaging sheet 1 wound in a roll will be described. As shown in FIGS. 3 and 1, a pair of cylindrical support rollers 5 rotatable about an axis parallel to the roll axis of the rolled packaging sheet 1 is provided on the lateral side of the packaging table 2. The packaging sheets 1 arranged side by side and wound in a roll on a pair of support rollers 5 are mounted rotatably around the roll axis.

A pair of braking members 27 are swingably supported around the lower horizontal axis P1 of the support roller 5.
A spring 30 having a pulling action is erected and connected across both lower ends of the pair of braking members 27. A link 31 is supported at the lower part of each of the two braking members 27 so as to be able to swing up and down, and the ends of both links 31 are connected by pins. An operation arm 33 is provided which is driven to swing up and down within a predetermined angle by a motor 32. A long hole (not shown) is provided at the tip of the operation arm 33, and a pin for connecting the tips of both links 31 is provided. Is inserted into this slot.

FIG. 3 shows a state in which the operating arm 33 is being lifted by the motor 32. The lower portions of the two braking members 27 are attracted to each other by the action of the spring 30, and the upper ends of both braking members 27 are both supported. This is a state in which both the support rollers 5 are braked by being pressed against the outer surface of the rollers 5. When the operation arm 33 is lowered by the motor 32 as shown in FIG. 5, the two links 31 are pushed right and left, and the upper ends of the braking members 27 are separated from the support rollers 5 against the spring 30. Is done.

(4) The drawer mechanism 16 for automatically pulling out the packaging sheet 1 from the packaging sheet 1 wound in a roll for the next packaging will be described. Under the end 1b of the packaging sheet 1 drawn out as shown in FIGS.
A plurality of first receiving portions 10a are arranged at predetermined intervals along the roll axis direction of the packaging sheet 1, and the first receiving portions 10a are set at the same height. The second receiving portions 10b are arranged opposite to the first receiving portions 10a at predetermined intervals on the side opposite to the packaging sheet 1 wound in a roll shape, and each of the second receiving portions 10b is connected to the first receiving portion 10a. It is set at a slightly lower height.

As shown in FIGS. 3 and 1, a pair of support plates 17 are slidably supported along left and right guide rails 2b of the packaging table 2.
A support shaft 18 is erected, and five operation arms 19 are independently fitted to the support shaft 18 so as to be swingable independently, and a rubber plate 19a is fixed to the upper surface of the distal end of the operation arm 19. A top plate 20 is bridged and connected over the upper ends of the left and right support plates 17, and the top plate 20 corresponding to the rubber plate 19a of the operation arm 19 is provided.
A rubber plate 20a is fixed to the lower surface of the main body, and a spring (not shown) for urging each operation arm 19 toward the swinging side of the top plate 20 is provided.
Are provided, and the drawer mechanism 16 is configured. In this case, as shown in FIG. 3, in a state where the operation arm 19 is being lowered, the top plate 20 of the drawer mechanism 16 is located at a position slightly higher than the first receiving portion 10a, and the second receiving portion Operation arm 1 slightly lower than 10b
Nine tips are located.

The support shaft 18 is rotatably supported by the support plate 17, and arms 18a are fixed to the left and right of the support shaft 18, and one rod 18 extends over the left and right arms 18a.
b is erected and fixed. A link 23 is provided over a fan-shaped gear 22 swingably supported by one support plate 17 and one arm 18a, and a motor 24 for driving the fan-shaped gear 22 is provided. The state shown in FIG. 3 is a state in which the motor 24 is driven to push up the rod 18b to pull down each operation arm 19 from the top plate 20, and when the motor 24 is driven in reverse to pull down the rod 18b as described later. Then, each operating arm 19 is raised toward the top plate 20 by the urging force of the spring, and clamps the end 1b of the packaging sheet 1.

As shown in FIG. 1, one drive shaft 39 is disposed at one end of the packaging table 2, and a pair of drive sprockets 35 are fixed to both ends of the drive shaft 39. Is provided with a motor 38 for rotationally driving the motor. One driven shaft 40 is disposed at the opposite end of the packaging table 2,
The driven sprocket 37 is fixed to both ends of the driven shaft 40. A pair of left and right chains 41 is wound around the left and right driving sprockets 35 and the driven sprockets 37, and the left and right chains 41 are connected to the left and right support plates 17 of the draw-out mechanism 16. With the above structure, the drive sprocket 35 is driven forward and reverse by the motor 38, so that the drawer mechanism 16 is connected to the guide rail 2 of the packaging table 2.
b.

As shown in FIG. 1, one end of the driven shaft 40 is provided with a rotary potentiometer 21 (corresponding to a position sensor) for outputting a detected value corresponding to a rotation angle of the driven shaft 40 from 0 ° to 360 °. ing. In this case, as shown in FIG.
(See (b)), the potentiometer 21 is set to output the detection value V0. When the pull-out mechanism 16 moves from the holding position in FIG. 4B to the left in the drawing as shown in FIG. 5, the rotation angle of the driven shaft 40 becomes 0 °.
The detection value corresponding to 360 ° from the potentiometer 21
Is output as a linear function, and immediately before the driven shaft 40 makes one rotation and the rotation angle becomes 0 °, the potentiometer 21 outputs the detection value V1.
Turns once and the rotation angle becomes 0 °, the potentiometer 21 outputs the detection value V0. Thereafter, with the movement of the pull-out mechanism 16, the detection values from the detection value V0 to the detection value V1 corresponding to the rotation angle of the driven shaft 40 from 0 ° to 360 ° are repeatedly output from the potentiometer 21.

(5) Drawer mechanism 16 for next packaging
The cutter 12 for automatically cutting the packaging sheet 1 drawn by the user will be described. As shown in FIGS. 3 and 1,
A support frame 13 is arranged above the first and second receiving portions 10a and 10b, and the support frame 13 has a flat cutter 1 having a width wider than the width of the packaging sheet 1.
2 is fixed. Bosses 13a fixed to the left and right of the support frame 13 are externally fitted to the left and right guide rails 9, and the whole of the support frame 13 is vertically slidably supported.

A pressing member 15 having a width of about half of that of the packaging sheet 1 and having a rubber plate 15a adhered to the lower surface thereof is provided with two front left and right sides and two rear left and right sides of the cutter 12. A total of four members are provided, and each holding member 15 is vertically movable by the support frame 13 and is urged downward by a spring 15 b so that the rubber plate 15 a of the holding member 15 projects below the lower end of the cutter 12. It is supported by.

(6) Next, the flow of the operation of the pull-out mechanism 16 and the cutter 12 when the packaging sheet 1 is pulled out onto the packaging table 2 for the next packaging after the completion of one packaging will be described with reference to FIGS. 13 and will be described with reference to FIGS. When one package is completed as shown in FIGS. 8A to 10B (step S1), FIG.
Further, as shown in FIG. 3, the drawer mechanism 16 located at the limit position in FIG. 4A moves toward the clamping position (see FIG. 4B) (step S2). During this time, the pair of braking members 27 are pressed by the support roller 5, and the support roller 5 is braked.

As shown in FIG. 1 and FIG.
Is provided with a reflection-type optical sensor 26 having a light-emitting device and a light-receiving device. As a result, as shown in FIG. 3, the drawer mechanism 16 moves to the holding position side and passes below the optical sensor 26, and when the optical sensor 26 detects the drawer mechanism 16 (step S).
3), as shown in FIG. 2, the potentiometer 21 outputs the detection value V2. Then, when the detection value of the potentiometer 21 reaches the detection value V0 after the optical sensor 26 detects the drawer mechanism 16 (step S4), the drawer mechanism 16 stops at that position (step S5).

FIG. 4 (b)
Are the holding positions of the drawer mechanism 16 shown in FIG. In this holding position, each operation arm 19 of the drawer mechanism 16 enters between the first and second receiving portions 10a and 10b, and each operation arm 19 of the drawer mechanism 16 and the top plate 20
The end 1b of the packaging sheet 1 enters between them. Next, the motor 24 of the drawer mechanism 16 is operated, the rod 18b is pulled down, and each operating arm 19 is raised to the top plate 20 side by the biasing force of the spring. 1 is clamped (step S6).

Next, as shown in FIGS. 4 (b) to 5, the operation arm 33 (see the state of FIG. 3) which has been raised is lowered and the two braking members 27 are opposed to the spring 30. The upper ends are separated from the two support rollers 5 so that the pair of support rollers 5 can freely rotate (step S).
7). Thereafter, with the end 1b of the packaging sheet 1 held therebetween, the drawer mechanism 16 starts moving to the right side of the drawing surface in the drawing position (step S8), and the packaging table 2 of the packaging sheet 1
The pulling-up of the packaging sheet 1 is started, and the roll-shaped portion of the packaging sheet 1 rotates together with the support roller 5 as the packaging sheet 1 is pulled out, so that the packaging sheet 1 is pulled out.

When the drawer mechanism 16 starts to move from the holding position as described above, the number of outputs N is set to zero (step S9), and the detection value of the potentiometer 21 is detected from the detection value V0 as shown in FIG. When the value reaches the value V1 (one rotation of the driven shaft 40 (see FIG. 1)) and returns to the detection value V0 (step S10), the output number N is counted up by one (step S11).

In this way, the number of outputs N is equal to the set number of times N '.
Before reaching, the pull-out mechanism 16 reaches the pull-out position as shown in FIG. In this case, the packaging sheet 1 is transparent, but the marks 1c are printed along the longitudinal direction of the packaging sheet 1 at predetermined intervals corresponding to the type of the article A to be packaged. Thereby, the packaging sheet 1 is pulled out, and FIG.
As shown in FIG. 13, when the mark 1c of the packaging sheet 1 reaches the position of the optical sensor 26 and the mark 1c is detected by the optical sensor 26 (step S21), the drawer mechanism 16 stops at this drawer position. (Step S
22).

Thereafter, as shown in FIGS. 5 and 6, the operating arm 33 is raised and the lower portions of the two braking members 27 are attracted to each other by the action of the spring 30. , The braking is applied to both support rollers 5 (step S23), and the support frame 13 including the cutter 12 and the holding member 15 is lowered (step S24) as shown in FIG.
The packaging sheet 1 is cut into a predetermined length. In this case, FIG.
Since the rubber plate 15a of the pressing member 15 protrudes below the lower end of the cutter 12 as shown in FIG. 4, when the support frame 13 is moved down, first, the four pressing members 15 in front of and behind the cutter 12 are moved to the packaging sheet. 1 is pressed against and held by the first and second receiving portions 10a and 10b. When the support frame 13 is further lowered from this state, as shown in FIG. 6, the cutter 12 enters between the first receiving portions 10a and the second receiving portions 10b and cuts the packaging sheet 1 at a stretch.

When the cutting of the packaging sheet 1 is completed as described above, the support frame 13 of the cutter 12 is raised to the original position (step S24), and the drawer mechanism 16 removes the packaging sheet 1 cut to a predetermined length. In the state of being pinched, it starts to move to the limit position side on the right side of the paper again (step S2).
5). As described above, when the drawer mechanism 16 starts to move to the limit position, steps S10, S11, and S1 in FIG.
At 2, the counting of the number of outputs N of the potentiometer 21 which has been interrupted is restarted.

Thereafter, when the number N of outputs of the potentiometer 21 reaches the set number N '(see FIG. 2) due to the movement of the drawer mechanism 16 toward the limit position (step S1).
2) The counting of the number of outputs N is completed. 2 and 1
As shown in FIG. 2, when the number of outputs N of the potentiometer 21 reaches the set number of times N ′, the potentiometer 21 outputs the detection value V0. In this state, the movement of the drawer mechanism 16 is continued.
1 is the detection value V3 (a value between the detection value V0 and the detection value V1)
Is output (step S13), the drawer mechanism 16 is stopped at this limit position (see FIG. 7) (step S1).
4). After stopping at the limit position shown in FIG. 7, the drawer mechanism 16 releases the end 1b of the packaging sheet 1 (step S15), and as a result, as shown in FIG. 1 and FIG. One cut packaging sheet 1 is placed on a packaging table 2.

As described above, the moving distance of the pull-out mechanism 16 when the driven shaft 40 shown in FIG. 1 makes one rotation (from the detection value V0 to the detection value V1 of the potentiometer 21) is known in advance, and the potentiometer 21 Is the detection value V0
When the detection value between the detection value V1 and the detection value V1 is output, the detection value V0
Can be easily calculated. Thereby, one rotation of the driven shaft 40 (from the detection value V0 to the detection value V1 of the potentiometer 21)
Is multiplied by the above-mentioned number of outputs N (the set number of times N ′), and the moving distance from the position corresponding to the detection value V0 to the position corresponding to the detection value V3 is added to this value. The moving distance of the drawer mechanism 16 from the holding position in FIG. 4B to the limit position in FIG. 7 is detected. Therefore, in other words, by constantly detecting the moving distance of the pull-out mechanism 16 by the above-described method, FIG.
When it is detected that the drawer mechanism 16 has moved by the moving distance from the holding position (b) to the limit position in FIG.
The drawer mechanism 16 is stopped at this limit position.

As shown in FIGS. 1 and 3, in the packaging table 2, a pair of right and left rubber plates 29 made of urethane rubber are provided between the second receiving portion 10b and the opening 2a. This allows
As shown in FIG.
The left and right rubber plates 29 are constantly in contact with the lower surface of the packaging sheet 1 during the pulling out, so that a space is always formed between the packaging sheet 1 and the packaging table 2, and the entire packaging sheet 1 is Is prevented from adhering to the packaging table 2. Also, as shown in FIG. 1 and FIG.
A pair of rubber plates 34 is also provided at a position opposite to
Four rubber plates 29, 3 centering on the opening 2a of the packaging table 2
4 are set to be located on a diagonal line. Thereby, when the drawer mechanism 16 releases the packaging sheet 1 cut to a predetermined length as shown in FIG. 7, the four rubber plates 29 and 34 are in contact with the lower surface of the packaging sheet 1.
The packaging sheet 1 does not move from that position due to the contact and frictional action between the rubber plates 29 and 34 and the packaging sheet 1.

(7) -1 As described above, the packaging sheet 1 is automatically pulled out by the pull-out mechanism 16, and the steps S21 to S21 in FIG.
An abnormality is detected when the packaging sheet 1 is automatically cut at 24, and this abnormality detection will be described next. As shown in step S8 of FIG. 5 and FIG.
And starts moving to the pull-out position side, the counting of the short first set time (corresponding to the set time of the present invention) and the long second set time are simultaneously started as shown in FIG. 13 (step S16), When the counting of the short first set time ends (step S17), the current position of the drawer mechanism 16 is detected (step S18).

In this case, as described in the latter half of (6), the detection value V0 of the potentiometer 21
Based on the current output number N up to 1 and the current detection value of the potentiometer 21 (a value between the detection value V0 and the detection value V1), the movement distance from the clamping position in FIG. Then, the current position of the drawer mechanism 16 is detected (step S18).

As a result, even if the first set time has elapsed since the drawer mechanism 16 began to move from the holding position in FIG.
If it does not pass below the optical sensor 26 (step S19), it is determined that the drawer mechanism 16 is abnormal. Then, the motor 38 of the pull-out mechanism 16 is stopped (step S26), the cutter 12 is held at the raised position (step S27) (corresponding to the check means), the buzzer is activated (step S28), and the operator is abnormal Will be notified.

(7) -2 Next, in step S19 of FIG.
When it is detected that the optical sensor 6 has passed the position of the optical sensor 26 within the first set time (step S19), the mark 1c of the packaging sheet 1 is detected by the optical sensor 26 as shown in FIG.
Until is detected (step S21), as described in the latter half of the previous section (6), the current number of outputs N from the detection value V0 to the detection value V1 of the potentiometer 21, and
Based on the current detection value of the potentiometer 21 (a value between the detection value V0 and the detection value V1), the movement distance from the holding position in FIG. Is detected (step S2).
9).

If the mark 1c of the packaging sheet 1 is detected by the optical sensor 26 (step S21) as shown in FIG. 6 before the long second set time elapses (step S20), the above-described operation is performed. Thus, the cutting of the packaging sheet 1 by the cutter 12 is performed (steps S22 to S22).
25). In addition, the mark 1c of the packaging sheet 1 is not detected by the optical sensor 26 until the long second set time elapses (step S20) because the mark 1c passes by the side of the detection light of the optical sensor 26. Even (Step S
21) If the drawer mechanism 16 has reached the limit position in FIG. 7 (steps S29 and S30), the drawer mechanism 16 stops at this limit position (step S31), and proceeds to step S23 where the packaging sheet by the cutter 12 is moved. 1 is performed.

Although the above state is a normal state, until the long second set time elapses (step S20),
The mark 1c of the packaging sheet 1 is not detected by the optical sensor 26 (step S21), and unless the drawer mechanism 16 has reached the limit position in FIG. 7 (steps S29 and S3).
0), it is determined that the drawer mechanism 16 is abnormal, the process proceeds from step S20 to step S26, and the motor 38 of the drawer mechanism 16 is stopped (step S2).
6) The cutter 12 is held at the raised position (step S27), the buzzer is activated (step S28), and the operator is notified of the abnormality.

[Alternative Embodiment] In the above-described embodiment, the potentiometer 21 shown in FIG. 1 is used as a position sensor for the pull-out mechanism 16.
An exclusive limit switch or an optical sensor for determining whether or not it is located at the holding position (b) may be used as the position sensor. In the embodiment shown in FIG. 1, the packaging sheet 1 is cut to a predetermined length by lowering the cutter 12; however, the cutter 12 is positioned below the first and second receiving portions 10a and 10b. , And the packaging sheet 1 may be cut to a predetermined length by operating the cutter 12 upward.

In the above embodiment, the packaging sheet 1 is sealed with the adhesive tape 4, but after cutting the upper portion 1a, the packaging sheet 1 is heated and the packaging sheet 1 is welded to seal the packaging sheet 1. The present invention may be applied to a packaging device that performs the above. Also, instead of the disk cutter 28 as shown in FIG. 9 (a), the present invention is applied to a packaging apparatus in which the upper portion 1a of the packaging sheet 1 sandwiched by the sandwiching member 14 is heated and melted by a heater (not shown). The invention may be applied.
Then, when the packaged object A is placed on the packaging sheet 1 of the packaging table 2 without the opening 2a shown in FIG.
The present invention can also be applied to a packaging apparatus in which the outer periphery of the packaging sheet 1 is lifted to wrap the article A to be packaged.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall perspective view near a packaging table.

FIG. 2 is a diagram showing a relationship between a detection value of a potentiometer for a drawer mechanism and a position of the drawer mechanism.

FIG. 3 is a side view showing a state in which the drawer mechanism is moving to a holding position side.

FIG. 4 is a side view showing a state before and after the drawer mechanism has been moved to the holding position and the end of the packaging sheet has been held;

FIG. 5 is a side view showing a state in which the drawer mechanism has started to pull out the packaging sheet from the state of FIG. 4;

FIG. 6 is a side view showing a state where the drawer mechanism is stopped at the drawer position from the state of FIG. 5 and the packaging sheet is cut by the cutter;

7 is a side view showing a state in which the drawer mechanism has reached a limit position after the state of FIG. 6, and the cutout packaging sheet has been placed at a predetermined position (opening) on the packaging table by the drawer mechanism;

FIG. 8 is a perspective view showing the flow of packaging from the charging of the packaged object into the opening to the narrowing of the packaging sheet by the holding member.

FIG. 9 is a perspective view showing the flow of packaging from cutting of the upper part of the packaging sheet to pressing of the adhesive tape by the sponge member.

FIG. 10 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 where packaging is completed.

FIG. 11 is a diagram showing a flow in the first half of the control from the extraction of the packaging sheet by the extraction mechanism to the placement of the cut packaging sheet on the packaging table.

FIG. 12 is a diagram showing a flow of the latter half of the control from the extraction of the packaging sheet by the extraction mechanism to the placement of the cut packaging sheet on the packaging table.

FIG. 13 is a diagram showing a flow of control of cutting of the packaging sheet during the drawing of the packaging sheet by the drawer mechanism and detection of abnormality of the drawer mechanism.

FIG. 14 is a side view showing a state where a packaging sheet is pulled out by a drawer mechanism according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging sheet 1b End part of packaging sheet 2 Packaging table 5 Support part 12 Cutter 16 Pull-out mechanism 21 Position sensor A Packaged object

Continued on the front page (72) Inventor Masaki Morita 64 Ishizu-Kitacho, Sakai-shi, Osaka Kubota Sakai Works (58) Field surveyed (Int. Cl. ⁶ , DB name) B65B 11/00-11/58

Claims (1)

(57) [Claims] 1. A packaging sheet (1) cut to a predetermined length.
A packaging table for mounting (2) and packaging means for wrapping the packaged object (A) placed on the packaging sheet (1) on the packaging table (2) in the packaging sheet (1). A packaging device, comprising: a support portion (5) for supporting a roll-wrapped packaging sheet (1) on a lateral side of the packaging table (2) so as to be rotatable around a roll axis; (5) a nipping position for nipping an end (1b) of the roll-shaped packaging sheet (1) supported by the packaging sheet (1), and the nipping position of the packaging sheet (1) while rotating the roll-shaped portion of the packaging sheet (1); A drawer mechanism (16) driven reciprocatingly over a drawer position for drawing a predetermined length onto the packaging table (2); the drawer mechanism (16) reaches the drawer position, and the packaging sheet (1) is When pulled out to a predetermined length on the packaging table (2), the packaging sheet (1) A cutter (12) for automatically cutting a predetermined position on the side of the roll-shaped portion, a position sensor (21) for detecting whether or not the pull-out mechanism (16) is present at a clamping position; Even if the set time has elapsed since the drawer mechanism (16) has reached the holding position, the position sensor (21) operates the drawer mechanism (16).
And a check means for preventing cutting operation of the cutter (12) if the presence of the cutter is detected.