JPS6149166B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feeding device for an automatic weighing and packaging device for fruit such as mandarin oranges and oranges installed in a fruit selection field.

Conventionally, the belt conveyor type feeding device in this type of automatic weighing and packaging equipment is commonly used.
The structure is such that a main supply conveyor and a narrow small quantity supply conveyor for supplying one piece are installed in parallel. In other words, for supplies with large grains per piece, such as mandarin oranges, for example, when weighing 15 kg, the 15 kg amount is not directly measured, but the default value (14
Kg, 14.5Kg, etc.), and when this predetermined value, which is the primary weighing weight, is reached, the main supply conveyor stops supplying to the box to be weighed, and the small amount supply conveyor on the side feeds out one piece to a predetermined value (2 A method is adopted to reach the next weighing. In this case, the next empty box is waiting immediately behind the box to be weighed on the weighing machine, and when the predetermined value is reached, a switching plate (stopper plate) is activated to stop the falling oranges from the box to be weighed. This is a method for switching to a box (for example, Japanese Patent Publication No. 42-21703). or,
In order to reduce the impact of falling onto the weighing machine, there is a structure in which the oranges are distributed and supplied to the following empty boxes in advance (for example, Utility Model Publication No. 56-10644), but in any case, these In this feeding device, a span plate, switching plate, etc. must be installed below the tip of the main feeding conveyor, which becomes a belt conveyor, which inevitably creates a large gap between the end of the main feeding conveyor and the boxes to be weighed or empty boxes.
The head from the end of the conveyor becomes large. For this reason, fruits with soft skins such as mandarin oranges are easily damaged. Of course, when it falls, it contacts the switching plate once, so it receives a double impact from the bottom of the box, which also causes bad results. In addition, since conventional feeding devices are fixedly installed, the distance between them and the weighing machine is regulated, and it is not possible to cope with changes in the type of box (feeding small boxes increasingly produces a head difference). That is, in recent years, there has been a trend to sell smaller boxes (for example, 5 or 10 kg, etc.) than large boxes containing 15 kg, depending on the preferences of buyers. Therefore, the emergence of a device that minimizes the head, which is the first problem with feeding devices, is awaited.

In view of the above-mentioned circumstances, the present invention aims to provide a feeding device for an automatic weighing and packaging machine in which fruits are mainly fed to boxes to be weighed and empty boxes using a main feeding conveyor that does not include a switching plate that causes a head difference. This is the purpose.

That is, the present invention is a belt conveyor type feeding device that has a main feeding conveyor and a narrow small quantity feeding conveyor, in which the main feeding conveyor is connected to the head pulley portion and the S-shaped bent portion formed on the return side for weighing by a weighing machine. A feeding device in an automatic weighing and packaging device for directly switching and feeding fruit, which is slidable and has a telescopic means that operates according to the timing, and allows the tip end of the main feeding conveyor to face the boxes to be weighed and the subsequent empty boxes in close proximity to each other. It is. In addition, this feeding device itself can be tilted freely using the base as a fulcrum using rack legs placed on the side of the machine frame and a pinion provided on the weighing machine side, so that even if it is a short box, it is possible to feed fruit close to each other. This serves as a supply device that directly switches and supplies.

Hereinafter, the present invention will be explained based on the drawings of embodiments.

Reference numeral 1 denotes a main supply conveyor consisting of a wide belt conveyor for conveying fruit A such as mandarin oranges which is connected to a separate supply means 3 after passing through a pruning drum 2 etc. The main supply conveyor 1 has a head pulley 4 and a drive motor 5. Both ends are hung on the provided table pulley 6, and the conveyor part 1a on the return side is made into a cradle with two pulleys, a movable tension pulley 7 and a fixed pulley 8, to form an S-shaped bent part 1b. The movable tension pulley 7 and the head pulley 4 are supported by a sliding frame 10 that moves within a machine frame 9, forming a telescopic conveyor 1' that changes the drop position 1c of the main supply conveyor 1. In this case, the fixed pulley 8 has a structure in which the sliding plates 38 disposed on both shaft ends slide back and forth with the rotation of the threaded rod 39 disposed on the machine frame 9 side, thereby taking up the slack. ing. 11 locks a rod 11a at the tip of the sliding frame 10, and connects the base end to the stop plate 9 of the machine frame 9.
This is an air cylinder fixed to a. Reference numeral 12 denotes a narrow small quantity supply conveyor on which one fruit is placed in an array, which is installed parallel to the side of the main supply belt 1;
The main supply conveyor 1 is placed a little lower than the conveyance surface of the main supply conveyor 1, and a part of the fruit A rolls and transfers on the base of the main supply conveyor 1, and these two conveyors 1 and 12 form a supply device 13. Reference numeral 14 denotes a width shifting plate installed in the longitudinal direction of the upper surface of the small quantity supply conveyor 12;
4 is suspended from the lower end of a slidable support piece 16 with a set screw 15 attached to a support rod 9b perpendicular to the machine frame 9. Further, the feeding device 13 has rack legs 17 protruding from each other with support pins 9c disposed on both sides of the front side of the machine frame 9, and the lower part of the rack legs 17 is installed parallel to the lower part of the feeding device 13 to form an automatic weighing box. Machine frame 1 of packing section 18
It is meshed with a pinion 20 provided at 9 to form a standing leg shape. This pinion 20 is configured to be engaged with a locking pawl 22 which is enabled by a lever 21. or,
Guide roller 23 placed on the back of pinion 20 position
The rack legs 17 slide into guide grooves 24 formed on the back of the rack legs 17, allowing the rack legs 17 to move up and down smoothly. Reference numeral 25 denotes a pivot joint provided at the base end of the machine frame 9 of the feeding device 13, which pivots at one point with a support shaft 27 disposed on the machine frame 26 on the feeding means 3 side, and is moved by the movement of the rack legs 17 to feed the feed device 13. The entire device 13 is configured to be tiltable.

To explain this operation now, first, the empty box B transferred on the empty box supply line 28 is moved to the automatic weighing box filling section 18 position, and the arm-type box feeding mechanism 29, which is appropriately interlocked, works to remove the empty box B. The empty box B is pushed out onto the conveyance path 30 and is set on the weighing machine 31 as the next stage empty box B is pushed out. That is, in the case of the automatic weighing and packaging section 18, the weighing box B' and the empty box B are
are being waited for continuously. In addition, the main supply conveyor 1 itself has a telescoping structure and can be freely switched between the boxes B' to be weighed and the empty boxes B, so that the 4 head pulleys of the main supply conveyor 1 are connected to the boxes to be weighed.
You can see the vicinity of the flange of B'. By the way, the distance between the conveyance surface of the main supply conveyor 1 and the edge of the flap of the box to be weighed B' is approximately 100 mm (in the case of the conventional type with a transfer and switching plate, the distance between the main supply conveyor and the flap is approximately 250 mm). needed). Therefore, the head difference is minimized. Of course, this is because the diameter of the head pulley 4 has increased due to the development of belts that are more flexible with the development of bed conveyors.
It has become possible to pulley easily even with a small diameter of about 30φ.

Here, the feeding means 3 passes through the picking drum 2.
The fruits A located above are fed to the main supply conveyor 1 (some of them are transferred directly to the small quantity supply conveyor 12), and a rubber hanging from above is placed at the front of the main supply conveyor 1. A resistive film 32 consisting of
Then, the flowers fall directly into the weighing box B', which has an opening directly below the falling position 1c, and are filled with flowers.

Next, when the weight of fruit A in this weighing box B' reaches 14.5 kg (in a 15 kg pack), a micro switch (not shown) is actuated by the main scale rod of the weighing machine 31. The air cylinder 11 is actuated due to the signal, and the rod 11a is compressed. Therefore, the head pulley 4 and the movable tension pulley 7, which are integrated with the rod 11a, move backward together (however, since the head pulley 4 and the movable tension pulley 7 are configured to constantly maintain a constant interval, the main part of the endless It does not affect the length of the supply conveyor 1 itself (see Figure 4). That is, the main supply conveyor 1 is in a substantially contracted state, and its dropping position 1c is moved back, causing the fruit A to fall into the following empty box B. In this case, sliding frame 1
A skid piece 33 of a certain length protruding from the 0 side comes into contact with the motor stop micro switch 34.
The drive motor 5 of the tail pulley 6 is momentarily stopped in this contact area. That is, the main supply conveyor 1 stops instantaneously, and the falling of the fruit A toward the front (toward the weighing box side) due to the backward movement of the main supply conveyor 1 is minimized. Of course, when the falling position of the main supply conveyor 1 reaches the empty box B side, the contact with the micro switch 34 is released, and the main supply conveyor 1 rotates in the normal direction to fill the empty box B with fruit A.

On the other hand, when the weighing machine 31 supports 14.5Kg, the minute feed drive motor 35 rotates due to this weighing, rotates the minute feed head pulley 36 that is linked to the drive motor 35, and the head pulley 36 and tail pulley rotate. 37 is rotated, and the fruits A lined up in a line on this conveying surface are dropped one by one into a box B' to be weighed to weigh 15 kg. Even when this small quantity supply conveyor 12 is used, the head difference is minimal because the entire machine frame 9 is close to the weighing box B' side as described above. In addition, in the case of this small quantity supply conveyor 12 section, when the grains of fruit A are small, the width adjusting plate 14 is moved with the horizontal slide of the support piece 16' section to adjust the width of the single row arrangement of the small quantity supply conveyor 12. It is something.

In this way, when the 15 kg boxing is completed, the movement of the small graduation rod causes the box wire removal mechanism 29 at the rear end of the automatic weighing and packing section 18 to operate to remove other empty boxes B from the empty box supply line 28. In order to take in the empty box B, the empty box B that has been switched and dropped is pushed, and the weighed box B' on the weighing machine 31 is thereby discharged to the sealing device side (not shown). Empty box B, which is slightly packed, is the box to be weighed.
becomes B′. When this empty box B becomes the box to be weighed B',
The compressed main supply conveyor 1 is moved by the air cylinder 11, and the slide frame 10 is moved by the rod 11a, and the head pulley 4 and movable tension pulley 7 are moved forward in parallel, causing the main supply conveyor 1 to fall. The position 1c is fed out, and the mainstream filling of the weighing box B' is performed. Hereafter, the same process is repeated.

Furthermore, if the box is smaller than the 15 kg packing mentioned above, the gap between the flap part of the box B' to be weighed and the main supply conveyor 1 will naturally be large. The supply device 13 is lowered by tilting it slightly. That is, the rack 17a of the rack side 17 suspended from the machine frame 9 of the feeding device 13
The locking pawl 22 locking the pinion 20 on the side of the automatic weighing and packaging section 18 that is engaged with the pinion 20 is released by turning the lever 21 and pivoting about the fulcrum 21a. When the supply device 13 is pushed down in this state, the rack shaft 17 is lowered by the rotation of the pinion 20, and the supply device 13 is tilted forward and downward using the pivot portion 26 at the base end as a fulcrum, and the main supply conveyor 1 The distance between the flap part of the box B' to be weighed and the flap part can be made as short as possible (to the extent that the return side conveyor part 1a does not come into contact with the flap part). The rack leg 17 can be fixed after this predetermined position by lifting the lever 21 and pushing the locking pawl 22 into the pinion 20 in the opposite manner to the above.

As mentioned above, the feeding device in the automatic weighing and packaging apparatus for fruits, etc. of the present invention has a wide main feeding conveyor and a narrow small amount feeding conveyor, and the main feeding conveyor is connected in an S-shaped manner on the return side. The movable tension pulley and head pulley at the bending part can be slid together to form a telescoping conveyor, allowing for direct refilling of the weighing boxes placed below and the subsequent empty boxes. By doing so, the main supply conveyor can be placed close to the flap of the box body, minimizing the head (compared to the conventional type with a switching plate, the head can be shortened by more than 150 mm), and it is possible to minimize the head when falling. Combined with the direct fall that does not come into contact with other intermediate members (switching plates, etc.), the fruit will not be damaged. This is particularly effective for soft-skinned fruits such as mandarin oranges. Of course, since the entire device is a simple type with only a belt conveyor and no switching plates etc., it is compact and free of malfunctions and breakdowns. In addition, the machine frame is equipped with a rack leg on the side that engages with the pinion on the weighing device side, and the machine frame can be tilted freely by raising and lowering the rack leg, so even when pouring a small box, The main supply conveyor can be exposed near the flap portion (of course, the minor supply conveyor also moves up and down together). In other words, it is possible to directly supply boxes of various sizes with minimal head difference.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the entire state of use, FIG. 2 is a slope view of the supply device section, and FIG. 3 is a slope view showing the transmission mechanism of the main supply conveyor section. Figure 4 is an explanatory diagram of the main supply conveyor section, Figures 5A and B are bottom views showing the expanded and contracted state of the main supply conveyor section, Figures 6A and B are explanatory diagrams of the boxed state, and Figure 7 A and B are side and slope views showing the meshing state of the rack leg and pinion, Figure 8 is a slope view of the falling part of the feeder, Figure 9 is a front view of the loading part of the feeder, and Figure 10 is the main view. It is an explanatory view showing an adjustment part of a fixed pulley of an S-shaped bent part of a supply conveyor. DESCRIPTION OF SYMBOLS 1... Main supply conveyor, 1a... Return side conveyor part, 1b... S-shaped bent part, 4... Head pulley, 6... Tail pulley, 7... Movable tension pulley, 8... Fixed pulley, 9... ...Machine frame, 1
0...Sliding frame, 11...Air cylinder, 12
...Minor supply conveyor, 13...Feeding device, 14
...Width shifting board, 17...Rack leg, 18...Automatic weighing box packing section, 19...Machine frame, 20...Pinion,
22... Locking claw, 31... Weighing machine, A... Fruit,
B...Empty box, B'...Box to be weighed.

Claims (1)

[Scope of Claims] 1. In a belt conveyor type supply device in which a main supply conveyor and a narrow small amount supply conveyor are arranged side by side, an S-shaped bent part formed on a head pulley portion and a return side of the main supply conveyor is slidable, A feeding device for an automatic weighing and packaging device for fruits, etc., characterized in that the falling position of the main feeding conveyor is configured to extend and retract, and the fruit is directly switched and fed in close proximity to a box to be weighed on a weighing machine and a subsequent empty box. . 2. In a belt conveyor-type supply device in which a main supply conveyor and a narrow small quantity supply conveyor are installed side by side, the S-shaped bent part formed on the head pulley section and the return side of the main supply conveyor is made slidable to prevent the main supply conveyor from falling. A feeding device whose position is extendable and retractable, and rack legs protruding from both sides of the front of the feeding device frame.
The feeding device itself can be freely tilted around the pivot point at the base end by engaging and standing on a pinion with a stopper provided on the machine frame of the weighing machine, and can be attached to a short box to be weighed on the weighing machine and a subsequent empty box. A feeding device for an automatic weighing and packaging device for fruits, etc., which is characterized by directly switching and feeding fruits even if they are close to each other.