JP2628645B2 - Debagging method and debagging device for fruit-covered bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to protecting and growing fruits, such as pears, by wrapping the fruits in a covering bag and closing the opening of the covering bag together with the axis of the fruit with a stopper.
The present invention relates to a bag removing method and a bag removing device for removing a coated bag from an as-covered fruit collected after ripening and carried to a fruit selection place.

[Conventional technology and problems]

After the fruits that have been transported to the sorting place are removed from the covering bags, they are subjected to a bonsai inspection, graded and sorted into boxes.

Debagging of the coated bag is a simple and repetitive operation, and the degree of fatigue of the worker increases, so it is necessary to save labor and labor. For this purpose, a debagging device has been developed and is already in practical use. However, the current bag removing apparatus has the following problems.

That is, as shown in FIG. 9, the covering bag B for wrapping the fruit F has an opening 2 cut on the axis 1 side of the fruit F and is placed on a saucer 4 having a hole 3 in the center.

The bag removing device 5 adjacent above the covering bag B is provided with a vertically movable pressing rod 6 at the center, and a flexible elastic body 7 is attached to the tip of the pressing rod 6.

A cylindrical body 9 having racks 8 at both ends is provided outside the pressing rod 6, and the cylindrical body 9 can be vertically moved independently of the pressing rod 6.

The rack 8 meshes with a pinion 12 provided on the outer periphery of a boss 11 pivotally mounted on a shaft 10.

Therefore, the boss 11 is rotated by the vertical movement of the cylindrical body 9 alone,
A finger 13 extending from the boss 11 rotates around the shaft 10 to open and close the covering bag B, and a flexible elastic body 14 attached to the inner end of the finger 13 contacts the covering bag B. Let go.

The bag removal of the covering bag B is performed as follows by the bag removing device 5 configured as described above.

As shown in FIG. 9, the fingers 13, 13 are closed and the elasticity 12 provided on the finger 13 is lightly pressed against the covering bag B.

Next, when the bag removing device 5 is lifted except for the pressing rod 6, the covering bag B rises together with the elastic body 14 due to the frictional force of the elastic body 14, and only the fruit F remains on the tray 4.

When the entire bag removing device 5 including the pressing rod 6 is lifted when the covering bag B almost exposes the fruit F, the covering bag B is completely separated from the fruit F to complete the bag removing operation.

During the above bag removing operation, the fruit F generates sliding friction with the covering bag B in a state where the fruit F receives the pressing force from the covering bag B pressed by the elastic body 14, so that only the portion that has received the sliding friction is applied. 2
After 3 days, there was a problem that the color changed and the commercial value of the fruit was reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and when removing a bag from a fruit, a bag removing method and a bag removing method capable of preventing the fruit from being damaged due to sliding friction between the fruit and the covering bag. An apparatus is provided.

[Means for solving the problem]

The present invention provides a placing step of placing a fruit wrapped in a covering bag having an opening and closing the fruit axis together with the opening with a stopper with the fruit axis facing downward, and A cutting step of cutting together with the closed portion of the covering bag; and a pair of side suction pads and an upper suction pad contacting and adsorbing the suction surfaces of the pair of side suction pads on both side surfaces and the upper surface thereof. A step of raising the pair of side suction pads and the upper suction pad to remove the bag while increasing the distance between the side suction pads and keeping both sides of the cover bag away from the fruit, A method for removing the coated bag was constructed.

Further, the bag removing apparatus for performing the bag removing method of the fruit covering bag has a saucer for placing the fruit, which is wrapped in a covering bag having an opening, and on which the axis of the fruit is closed together with the opening with a stopper. A pan conveyor having a hole at the center of the pan where a shaft or the like is inserted, a cutting device arranged below the pan conveyor and cutting a shaft and a covering bag projecting below the hole and a cutting device; A cylindrical body is provided on a chain link that travels in the same speed and in the same direction as approaching the packaged fruit placed thereon, and a pair of suction fingers is pivotally attached to a vertically moving piece that can move up and down in the cylindrical body, and the pair of suction Provide a side suction pad on the finger,
An upper suction pad capable of moving up and down in the cylinder is provided. After the side suction pad and the upper suction pad suck the cover bag, the pair of suction fingers are opened, and then the upper suction pad and the side suction pad are opened. And a control mechanism for moving the pad upward.

〔Example〕

 Embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 7, fruits F such as pears are wrapped in a covering bag B having an opening 2 at one end, and the opening 2 is closed together with the shaft core 1 of the fruit F by a clasp 15 orchard. It is transported to a fruit sorting place.

The fruit-covered bag that has been selected for the fruit sorting field is cut off and the bag is removed. After sorting inspection and grade sorting, it is packed in boxes.

FIG. 5 and FIG. 6 show a plan view and a front view of the bag removing device, wherein reference numeral P denotes a bread conveyor for transporting the loaded fruits.

A large number of trays 16 are arranged in two rows on the bread conveyor P in the transport direction, and a hole 3 is formed in the center of the tray 16 (see FIG. 7).

The pan conveyor P is rotationally driven by a sprocket 20 coaxial with a sprocket 19 to which power is transmitted from a motor 17 via a chain 18, and rotates in the direction of arrow 21.

A shown on the left side of the bread conveyor P is a fruit stacking area on which the fruits packaged in the pan 16 are placed, and is performed manually by the worker M. As shown in FIG.
And the cover bag B is placed so that the opening 2 protrudes below the hole 3.

On the right side of the stacking area A, a cutting device including a pulling device 22, a rolling roll 23, and a rotary cutter 24 is provided below the transport path of the bread conveyor P.

As shown in FIGS. 3 and 4, the pulling device 22 is constituted by two belt conveyors 25 and 26 having a slope descending in the conveying direction.
Rotate in 27 directions.

The interval between the belt conveyors 25 and 26 becomes narrower in the transport direction, and the coating bag B and the shaft core 1 projecting below the holes 3 are gradually pressed by the belt conveyors 25 and 26.

The belt conveyors 25 and 26 are rotating at the same speed as the pan conveyor P, and the coating bag B and the shaft 1 sandwiched between the conveyors 25 and 26 are pulled downward with the downward inclination of the conveyors 25 and 26. You.

Accordingly, as shown in FIG. 8, when the covering bag B and the shaft core 1 do not protrude sufficiently from the hole 3, they are pulled downward by the pulling device 22 and pulled out downward as shown in FIG. When the axis 1 is inclined in the direction perpendicular to the transport, the axis 1
Is modified so that it faces downward.

Reference numeral 28 denotes a motor for driving the belt, and reference numeral 28 denotes a motor for driving the belt.
Numerals 29 and 30 denote bearings for supporting the rotating shafts of the driving side and driven side pulleys, respectively.

The rolling roll 23 disposed behind the tensioning device 22 is
As shown in FIG. 4 and FIG. 4, rollers 31 and 32 opposed to each other with a slight gap are provided at the center of the transport path of the tray 16 and rotate at a peripheral speed substantially equal to the transport speed of the pan conveyor P.

 Reference numeral 33 denotes a roller driving motor.

The shaft core 1 and the like passing between the rollers 31 and 32 are flattened by the rollers 31 and 32, and are easily bitten by the rotary cutter 24 disposed behind the rolling rolls 23.

As shown in FIGS. 3 and 4, the rotary cutter 24 has two cutters 34, 35
Are rotated vertically at the same speed as the transport speed of the pan conveyor P by the motor 36 to cut the rolled shaft core and the covering bag B.

Tensile device 22, rolling roll 23 and rotary cutter 24
A suction duct 37 is provided below the cutting device and the fruit stacking area A, and collects dust around the bread conveyor.

Above the bread conveyor P, a first-stage bag removing unit 38 and a second-stage bag removing unit 39 that approach the fruit F packed in the tray 16 and travel in the same speed and in the same direction are arranged.

However, when the covering bag B is not a double package of the inner bag and the outer bag but is simply a single package, the second-stage bag removing unit can be omitted.

Since the first-stage bag removing unit 38 and the second-stage bag removing unit 39 have exactly the same configuration, only the first-stage bag removing unit 38 will be described.

In the first-stage bag removing unit 38, the chain link 42 wound around the driving sprocket 40 and the driven sprocket 41 is indicated by an arrow 43.
It rotates at the same speed as the pan conveyor P in the direction (see FIG. 6).

The chain link 42 is provided with a link 42a having a cylindrical body 43 at the same pitch as the pan 16 of the pan conveyor P (the second link 42a).
See figure).

A vertical moving piece 44 is loosely fitted inside the cylindrical body 43 so as to be slidable in the vertical direction, and a cam follower 46 provided at the tip of a vertical moving piece rod 45 extending on the upper surface of the vertical moving piece 44 moves up and down. The roller 44 rolls along the cam groove 47 which is a control mechanism of the piece 44, and the vertically moving piece 45 slides in the vertical direction according to the lift of the cam groove 47.

Two 48, 48 are set up on the vertical moving piece 44, the suction fingers 49, 49 are pivotally attached to the pins 48, 48, and the ends of both the suction fingers 49, 49 are pivotally connected by the pin 50. , A finger rod 52 attached to a pin 51 established on one suction finger 49.
Is pivoted at one end.

Cam follower 53 provided at the other end of finger rod 52
Rolls along the cam groove 54 which is a control mechanism of the side suction pad 55, and the finger rod 52 is moved in accordance with the lift of the cam groove 54.
Moves downward or upward to open and close the suction finger 49.

A flexible side suction pad 55 is provided on the inner surface of the suction finger 49, and the surface of the side suction pad 55 becomes a suction surface by sucking air from a hole provided in the side suction pad 55.

In the middle of the side suction pad 55, similarly, the upper suction pad 56
The upper suction pad 56 is urged downward by a spring 58 incorporated in the shock absorber 57 to form an upper suction surface that makes soft contact with the covering bag B.

A rod 59 is mounted above the shock absorber 57, and a cam follower 60 provided at the upper end of the rod 59 rolls along a cam groove 61 which is a control mechanism of the upper suction pad 56.

An air blowing duct 62 is disposed below the pan conveyor P below the first-stage bag removing unit 38 and the second-stage bag removing unit 39, and air is blown upward from the air blowing duct 62.

Also, the first-stage bag removing unit 38 and the second-stage bag removing unit 39
A dust collecting and bag collecting duct 63 is arranged above the rear side of each of them, and the surrounding air is sucked through an opening at the end of the duct 63.

A bag removing method for a fruit-covered bag based on the bag removing device configured as described above will be described.

The covering bag B for wrapping fruits F such as pears generally has a double structure of an outer bag and an inner bag, and as shown in FIG.
Is closed by a clasp 15 together with the fruit core 1.

Then, in the fruit stacking area of the bag removing device, the closed portion of the shaft core 1 and the covering bag B is downwardly inserted into the hole 3 at the center of the trays 16 arranged in two rows on the bread conveyor P by the hand of the worker M. The fruit F is placed on the saucer 16 so as to protrude.

Due to the rotation of the pan conveyor P, the tray 16 reaches the upper side of the pulling device 22, the cover bag B and the shaft core 1 are pressed by the belt conveyors 25 and 26, and the belt conveyors 25 and 26, the cover bag B is pulled out by being pulled downward, and the inclination of the shaft core 1 in the direction perpendicular to the conveyance direction is corrected.

Next, the closed portion of the covering bag B and the shaft core 1 pass through the rolling rolls 23 and are flattened to be easily bitten by the rotary cutter 24.

The closed portion of the covering bag B is cut through the rotary cutter 24, and the shaft core 1 is cut to a substantially constant length.

Then, dust generated when passing through the cutting device including the tension device 22, the rolling roll 23, and the rotary cutter 24 or the dust on the pan conveyor P is sucked by the suction duct 37.

On the other hand, by the rotation of the chain link 42 of the first-stage bag removing unit 38, the suction finger 49 moves just above the pan of the pan conveyor P at the same speed, and descends by the cam follower 53 rolling along the cam groove 54. The suction finger 49 is opened by the finger rod 52, and the rod 59 is lowered by the cam follower 60 rolling along the cam groove 61, so that the upper suction pad 56 comes into light contact with the covering bag B via the shock absorber 57 (see FIG. 1
(See Fig. (A)).

With the rotation of the chain link 42, the vertically movable piece rod 45 is further lowered by the cam follower 46 rolling along the cam groove 47, and the suction fingers 49 are located on both sides of the covering bag B (FIG. 1 ( B)).

Next, the lift of the cam groove 54 raises the finger rod 52, and the suction finger rod 49 rotates in the closing direction,
The soft side suction pad 55 sandwiches the covering bag B and the fruit F (see FIG. 1 (c)).

Then, the cover bag B is sucked by the side suction pad 55 and the upper suction pad 56, and when the suction finger rod 49 is opened again, the outer bag (or the outer bag and the inner bag) of the cover bag B is expanded (FIG. 1). (D)).

Next, while holding the covering bag B, the suction finger rod
49 and the upper suction pad 56 rise, and the coated bag B is separated from the fruit F (see FIG. 1 (e)).

In this case, the outer bag and the inner bag may both be removed from the covering bag B, but only the inner bag may remain. Unit 39
The same operation is performed to remove the remaining inner bag.

When the inner bag has been removed together with the outer bag, the side suction pad 55 and the upper suction pad 56 are in direct contact with the fruit F. However, since the side suction pad 55 and the upper suction pad 56 are soft, the There is no contact flaw.

During the bag removal, air is blown from below onto the cover bag B, and the cover bag expands due to the air that has entered through the opening, so that the bag removal operation can be performed more reliably.

When the suction finger 49 that has absorbed the covering bag B approaches the opening of the duct 63 for dust collection and bag collection, the covering bag B is sucked into the duct 63 to stop the suction operation.

Thus, the fruit F from which the covering bag B has been removed is transferred to the rear sorting inspection area by the bread conveyor P.

In the bag removing apparatus and the bag removing method described above, the operation of the suction finger is performed by the cam groove and the cam follower, but can be replaced by a known actuator such as an air cylinder.

(Effect)

According to the present invention, since the both sides of the covering bag are expanded so as not to come into contact with the fruit, and the covering bag is removed upward, the discolored portion caused by the pressing force and the frictional force does not occur on the fruit.

Then, the fruit placed on the saucer is completely labor-saving and is reliably unbagged.

[Brief description of the drawings]

1 to 8 show an embodiment of the present invention, FIG. 1 is a schematic diagram for explaining a bag removing process, FIG. 2 is a sectional front view of a main part of a suction finger and the like, and FIG. 3 is a plan view of a cutting device. Fig. 4 is a front view of the same, Fig. 5 is a plan view of the bag removing device, Fig. 6 is a vertical sectional view of the same, Fig. 7 and Fig. 8 are front views of the covering bag placed on a saucer. FIG. 9 is a longitudinal sectional view showing a main part of a bag removing device in a conventional example. B: Fruit, B: Covered bag, A: Fruit area, P:
Bread conveyor, 1 ... shaft core, 2 ... opening, 4 ... tray, 22 ... pulling device, 23 ... rolling roll, 24 ... rotary cutter, 37 ... suction duct, 38 ... first stage Bag removing unit, 39… Second stage bag removing unit, 42… Chen link, 43 …… Cylindrical body, 44 …… Vertical moving piece, 45 …… Vertical moving rod, 46… Cam follower, 47… Cam Groove, 49… Suction finger, 52… Finger rod, 53… Cam follower,
54 ... cam groove, 55 ... side suction pad, 56 ... upper suction pad, 57 ... shock absorber, 59 ... rod, 60 ... cam follower, 61 ... cam groove, 62 ... air blowing duct.

Claims (2)

(57) [Claims] 1. A placing step of placing a fruit wrapped in a covering bag having an opening and closing the fruit axis with a clasp together with an opening with the axis facing downward; And a cutting step of cutting the pair of side suction pads and the upper suction pad into contact with both sides and the upper surface of the coating bag, and then suctioning the pair of side suction pads and the upper suction pad. A step of raising the pair of side suction pads and the upper suction pad to remove the bag while increasing the distance between the side suction pads and keeping both sides of the covering bag away from the fruit. A method of debagging a fruit-covered bag that is composed. 2. A hole for placing a fruit, which is wrapped in a covering bag having an opening, and on which a fruit core closed with a clasp together with the opening is placed, and a hole for inserting a shaft core or the like into the center of the saucer. A cutting device arranged below the bread conveyor, the cutting device being arranged below the bread conveyor and cutting the covering bag and the shaft core protruding downward from the hole, and a cutting device approaching the packaged fruit placed on the bread conveyor. A cylinder is provided on a chain link that runs in the same speed direction, a pair of suction fingers is pivotally attached to a vertically moving piece that can move up and down in the cylinder, and a side suction pad is provided on the pair of suction fingers. An upper suction pad capable of moving up and down in the body is provided, and after the side suction pad and the upper suction pad suck the cover bag, the pair of suction fingers are opened, and then the upper suction pad and the side suction pad are opened. Control mechanism to move upward De bag device constructed fruit coated bags by dividing bag unit with.