JP2000326927A - Bag supplying apparatus for tea making - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly hold an empty bag at both its sides because the underside of its opening is held by a supplementary arm and to make any bag available for being mounted certainly by a method wherein the supplementary arm is fitted loose to a rotative shaft while a lifting arm having a pin for engagement with the supplementary arm is fixed to the rotative shaft on a position adjoining the supplementary arm. SOLUTION: A sucker 9 of a holding arm 8 is pressed on the opening side of an empty bag 5 to such the upside of the empty bag 5 and the front end of the empty bag 5 placed on the uppermost layer is raised up from an empty bag preparing table 1 with the holding arm 8 contracted. At the same time, a lifting arm 10 fixed to the same rotative shaft 7 is turned. At the time when the front end of the holding arm 8 separates from the empty bag preparing table 1, an engagement pin 12 provided at the lifting arm 10 comes into contact with the supplementary arm 11 and turns together. As the front end of the empty bag 5 is separated from the empty bag preparing table 1, the lower side of the opening is hung down and supported with the supplementary arm 11 waiting at this position. As the holding arm 8 extends the arm again while turning, the empty bag 5 is turned, being held between the sucker 9 and the supplementary arm 11, and placed upright at a position right below a tea leaf supply port 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a large-sized bag called "Omi-bag" for crude tea manufactured in a tea factory, sieved and mixed in a finishing factory, and the like, and a cardboard box. The present invention relates to a device for automatically weighing and packing bags which are lined with aluminum and folded in a bag or the like so as to put them into a tea leaf supply port.

[0002]

2. Description of the Related Art An apparatus for automatically mounting a large sack for tea making as disclosed in Japanese Patent Application Laid-Open No. 8-156917, and a machine for feeding tea bags as disclosed in Japanese Patent Application Laid-Open No. 1-139320 are used.

[0003]

A tea-supplying apparatus for tea making which is currently used is a suction apparatus in which the opening side of a bag placed side by side on an empty bag preparation table is provided at the tip of a telescopic holding arm. The holding arm is rotated by about 90 °, carried to a tea leaf supply port, and held by a bag holder provided there. Therefore, since the adsorber sucks only the upper side of the laterally placed bag, the lower side drops down (FIG. 12), and when the holding arm is turned upward by 90 °, it does not fit the bag holder. is there. In particular, since the cardboard bag is folded inward, the opening is opened downward even if only the upper side of the bag is sucked, making it impossible to hold the bag (FIG. 13).

[0004]

In order to solve the above problems, (1) a telescopic holding arm is attached to the tip of a rotating shaft,
In a bag feeding apparatus provided with an adsorber at the tip of a holding arm, an auxiliary arm is loosely fitted to a rotating shaft, and a lifting arm provided with a pin engaging with the auxiliary arm is provided next to the auxiliary arm. Stick to
(2) An adsorbent was provided on the auxiliary arm of the tea-making bag supply device.
(In this case, if the adsorbent is provided on the auxiliary arm, the auxiliary adsorber provided for opening the bag at the tea leaf supply port becomes unnecessary.) The bag with the auxiliary arm by means of (1) or (2) It is possible to carry the bag to the tea leaf supply port while holding the lower side of the tea leaf supply port. (3) By rotating the holding arm to the tea production apparatus of (1) or (2) above, After holding the bag in the bag holder provided in the above, the adsorber of the holding arm is opened to release the bag from the holding arm, the bag is raised together with the bag holder, the rotation axis is reversed, and the holding arm and The problem was solved by returning the auxiliary arm to the original position.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The upper surface of an empty bag is sucked by pressing an adsorber provided at the tip of a holding arm against the opening side of the empty bag placed side by side on the empty bag preparation table and sucking air. ,
By retracting the holding arm, the top of the empty bag is lifted from the empty bag preparation table. At the same time, the empty bag preparation table is vibrated to completely separate the lifted empty bag and the horizontally placed empty bag, and the holding arm is rotated to pull up the sucked empty bag. Simultaneously with the rotation of the holding arm, the lifting arm fixed to the same rotation axis also rotates. Since the lifting arm is fixed at a slightly delayed angle from the holding arm, when the tip of the holding arm separates from the empty bag preparation table, the engaging pin provided on the lifting arm contacts the auxiliary arm, and the auxiliary arm is moved from the holding arm. They rotate together with a slightly delayed angle. When the tip of the empty bag comes off the preparation table,
The lower part of the opening hangs down and is supported by the auxiliary arm waiting at this part.

[0006] Since the holding arm rotates and extends the arm again, the empty bag rotates while being sandwiched between the adsorber and the auxiliary arm, and is vertically positioned with the opening side directly below the tea leaf supply port. Will be retained. An auxiliary adsorber is provided at a position facing the adsorber of the auxiliary arm, and one surface of the opening of the empty bag (the upper surface when it is placed horizontally) is held by the adsorber of the holding arm on the other surface (the horizontal surface). Is held by the auxiliary adsorber. When the auxiliary adsorber is provided on the auxiliary arm, it is not necessary to provide the auxiliary adsorber at a position facing the auxiliary arm.

In this state, the holding arm is contracted, the empty bag is opened, the bag holder is lowered, and the left and right sides of the empty bag are held. The bag holder is provided at the same width as the bag spread by the adsorber on the left and right below the tea leaf supply port. With one of them as a fulcrum, it can be opened and closed like scissors, and waits in a state opened downward. The lower side is openable and closable, with the upper and lower sides of the side plates before and after the tea leaf supply port in the direction perpendicular to the bag holder, and these side plates are closed to stand by. When the tea leaf supply port is lowered in this state, the left and right bag walls are inserted into the opened portions of the scissor-like bag holder, and the closed side plates in the front-rear direction are inserted into the bag. When the tea leaf supply port is lowered to this position, the scissors of the bag holder are closed, the bag is held, the side plate in the front-rear direction is opened, and the mouth of the bag is opened in the front-rear direction.

When the bag holder holds the empty bag, the adsorber stops sucking air and releases the bag. Next, the bag holder is raised while holding the bag, and the bag is pulled upward so that the lower side of the bag does not catch when the auxiliary arm rotates in the reverse direction and returns to the original position. The holding arm that has released the bag rotates in the reverse direction and returns to the empty bag preparation table. At this time, the lifting arm and the auxiliary arm return to the original position together. Next, while the bag is held by the bag holder at the tea leaf supply port, the bottom of the bag is lowered to a height at which it hits the vibrating table, and the bag is packed while applying vibration to the tea leaves put into the bag.

[0009]

1 is a box-shaped empty bag preparation table, the bottom surface of which is held by a leaf spring 2; The empty bag preparation table 1 is vibrated by the vibrator 3. In FIG. 1, the right side of the empty bag preparation table 1 is
The empty bag 5 is opened as a drawer side 6, and a stopper (not shown) is provided on the left side so as to align the bottom of the empty bag 5. The leaf spring 2 is attached in a direction to return the empty bag 5 to the empty bag preparation table 1 by vibration. Reference numeral 4 denotes a base for supporting the empty bag preparation table 1. A large number of empty bags 5 are placed side by side in the empty bag preparation table 1 in a folded state. At this time, the opening side of the empty bag 5 is aligned with the drawer side 6 of the empty bag preparation table 1. A rotating shaft 7 is provided above the drawer side 6 of the empty bag preparation table 1. A holding arm 8 that can be extended and contracted
Is fixed, and the holding arm 8 is expanded and contracted by an air cylinder incorporated in the arm. An adsorber 9 is provided at the tip of the holding arm 8 and is connected to a vacuum pump (not shown).
A lifting arm 10 is fixed to the rotating shaft 7. Furthermore,
An auxiliary arm 11 is rotatably fitted on the same rotating shaft 7. An engagement pin 12 is projected from the lifting arm 10, and the rotation of the lifting arm 10 causes the engagement pin 12 to engage with the auxiliary arm 11 to rotate the auxiliary arm 11.

[0010] At the start, the holding arm 8 is stopped just below. At this time, the holding arm 8 is extended, and the adsorber 9 is pressed against the upper surface of the uppermost empty bag 13 laid horizontally on the empty bag preparation table 1. The empty bag 13 is attracted to the adsorbent 9 by the vacuum pump, the holding arm 8 is contracted, and the empty bag 13 is lifted from the empty bag preparation table 1 and, at the same time, the empty bag preparation table 1 is vibrated. Next, the rotation arm 7 is rotated to rotate the holding arm 8. Since the lifting arm 10 is delayed from the holding arm 8 by the angle α and fixed to the rotation shaft 7, the lifting arm 10 rotates from behind the holding arm 8. The tip of the auxiliary arm 11 is bent into an L-shape, and the stopper 15 holds the L-shaped horizontal portion 14 so that the L-shaped horizontal portion 14 is aligned with the bottom of the empty bag preparation table 1. When the lifting arm 8 pulls out the empty bag 13 from the empty bag preparation table 1, the engaging pin 12 of the lifting arm 10 hits the auxiliary arm 11 and rotates the auxiliary arm 10. At this time, since the empty bag preparation table 1 is vibrating, it is dragged by the empty bag 13 and even if the empty bag 5 protrudes from the empty bag preparation table 1, the empty bag preparation table 1 is pulled back. The empty bag preparation table 1 starts vibration when the empty bag 13 is sucked and lifted, and may stop at any time. In the embodiment, the empty bag 13 is stopped when the empty bag 13 is held by the bag holder 19. .

When the holding arm 8 starts rotating, the holding arm 8
Extend its arm and set the angle α to the angle at which the L-shaped horizontal portion 14 of the auxiliary arm 11 does not interfere with the auxiliary adsorbent 16. When the auxiliary adsorbent 26 is provided in the L-shaped horizontal portion 14,
The angle is set so that the adsorber 9 and the auxiliary adsorber 26 face each other. ), The empty bag 13 is held between the auxiliary arm 11 and the auxiliary arm 11 which starts to rotate with a delay, and the holding arm 8 is rotated to a horizontal position. At this time, the empty bag 13 is held in the vertical direction. The auxiliary adsorber 1 is placed at a position facing the holding arm 8 in a horizontal state.
6 are provided. The auxiliary adsorber 16 is the air cylinder 1
7 moves back and forth by expansion and contraction. In this state, the air cylinder 17 is extended, the auxiliary adsorber 16 is pressed against the empty bag 13, suctioned by the vacuum pump, and both sides of the empty bag 13 are adsorbed by the adsorber 9 and the auxiliary adsorber 16. Next, the auxiliary arm 8
To open the empty bag 13. In this state, a tea leaf supply port 18 is provided above the empty bag 13. Tea leaf supply port 1
In the lower part of the bag 8, one is a fulcrum 20, and the other is a bag holder 19 composed of fingers that can be opened and closed like scissors (the fingers are opened and closed by an air cylinder but not shown).
Is provided in accordance with the bag wall of the opened empty bag 13.
On the side wall of the tea leaf supply port 18 at right angles to the bag holder 19,
Side plates 23 and 24 that open and close about fulcrums 21 and 22
(It is opened and closed by another air cylinder, not shown).

A flexible sheet 25 is provided inside the tea leaf supply port 18. When the side plates 23 and 24 are closed,
The sheet 25 is moved to the center of the tea leaf supply port 18. In this state, when the bag holder 19 is opened and the tea leaf supply port 18 is lowered to a position where the edge of the empty bag 13 enters between the scissors of the bag holder 19, the side plates 23 and 24 enter the inside of the empty bag 13. .
Next, the scissors are closed and the empty bag 13 is held,
Empty bag 1 with side plates 23 and 24 opened and folded inside
The edge of No. 3 is pushed open, and the opening of the empty bag 13 is widened. When the bag holder 19 holds the empty bag 13, suction by the vacuum pump is stopped, and the adsorber 9 and the auxiliary adsorber 16 are released from the empty bag. The tea leaf supply port 18 once moves upward while holding the empty bag 13, and the bottom of the empty bag 13 rises to a position where the L-shaped horizontal portion 14 can rotate in the reverse direction. When the air cylinder 17 is contracted, the auxiliary adsorber 16 retreats and returns to the standby position. The rotating shaft 7 is rotated in the reverse direction, and the holding arm 8 fixed to the rotating shaft 7,
Return the lifting arm 10 to its original position. At this time, the engagement pin 12
The auxiliary arm 11 supported by the arm also rotates backward and returns together, but hits the stopper 15, separates from the engaging pin 12, and
The auxiliary arm 11 waits at this position.

As a second embodiment, as shown in FIG.
When the auxiliary adsorbent 26 is provided in the first device 1, one side (lower surface) of the empty bag 13 is adsorbed by the adsorbent 26, so that the empty bag 13 can be adsorbed and opened by the adsorbent 9 and the auxiliary adsorber 26. Therefore, the auxiliary adsorber 16 and the air cylinder 17 need not be provided.

Next, the tea leaves supply port 18 is lowered while the empty bags 13 are held, and the tea leaves are put in such a manner that the bottom of the empty bags 13 touches the vibrating table 27. When the tea leaves reach the set amount, open the scissors of the bag holder 19, release the bag, and
9 rises together with the tea leaf supply port 18 and stands by at the original position.

The shape of the bag holder is not limited to the above embodiment, but may be other means.

[0016]

According to the present invention, when a large number of empty bags placed side by side on the empty bag preparation table are sequentially sucked and taken out from the top, only the upper surface is sucked, so that the lower surface on the opening side hangs down, and mounting errors easily occur. . In the cardboard box bag, since the side surface of the opening is folded inward, it is impossible to hold the lower surface even if only the upper surface is sucked. In this invention, since the lower surface of the opening is supported by the auxiliary arm, the empty bag can be reliably supported on both sides,
Any bag can be securely attached. JP-A-8-
In the case of 156917 and the like, an auxiliary adsorber and a moving mechanism of the auxiliary adsorber are required at a position where the empty bag is rotated and made vertical, separately from the holding arm that rotates by sucking the empty bag. By providing the auxiliary suction element on the moving auxiliary arm, these elements become unnecessary and the structure is simplified. When holding the upper side with the holding arm, the lower side with the auxiliary arm, and both sides of the empty bag, and rotating the holding arm to bring the empty bag upright under the tea leaf supply port, the holding arm on the near side is rotated in reverse. It is easy to return to the original, but it is difficult to return the auxiliary arm on the other side of the bag because the bag is in the way, but the structure is simple by raising the bag held at the tea leaf supply port Can solve this problem. Even if the length of the bag is different, it can be handled by changing the height of the bag.

[Brief description of the drawings]

FIG. 1 is a front view of the present embodiment.

FIG. 2 is a side view.

FIG. 3 is a side view showing a relationship among a holding arm, an auxiliary arm, a lifting arm, and an engagement pin.

FIG. 4 is a front view showing a case where an auxiliary adsorbent is attached to an auxiliary arm as a second embodiment;

FIG. 5 is a side view of the second embodiment.

FIG. 6 is a front view showing the relationship between the lower part of the tea leaf supply port and the bag holder.

7 is a side view of FIG. 6, showing the relationship between side plates 23 and 24. FIG.

FIG. 8 is a plan view of FIG. 6;

FIG. 9 is a front view showing a state in which the tea leaf supply port is lowered and an empty bag is held by a holder.

FIG. 10 is a front view showing a state in which the holding arm rotates backward.

FIG. 11 is a front view showing a state in which a bag is lowered and tea leaves are put into the bag.

FIG. 12 is a diagram showing a state in which the lower side leans when a normal large sack is held.

FIG. 13 is a view showing a state in which the lower side is leaned when the cardboard bag is held.

FIG. 14 is a diagram showing a state in which a cardboard bag is held by an auxiliary arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Empty bag preparation table 2 Leaf spring 3 Vibrator 4 Base table 5 Empty bag 6 Pull-out side 7 Rotating axis 8 Holding arm 9 Adsorber 10 Lifting arm 11 Auxiliary arm 12 Engagement pin 13 Top empty bag 14 L-shaped horizontal part Reference Signs List 15 stopper 16 auxiliary adsorber 17 air cylinder 18 tea leaf supply port 19 bag holder 20 fulcrum 21 fulcrum 22 fulcrum 23 side plate 24 side plate 25 sheet 26 auxiliary adsorber 27 vibrating table 28 chute 29 tea leaf 30 folding part

Claims (3)

[Claims] 1. A bag supply device having a telescopic holding arm attached to a tip of a rotating shaft and an adsorber provided at a tip of the holding arm, wherein an auxiliary arm is loosely fitted to the rotating shaft and an auxiliary arm is provided. Characterized in that a lifting arm provided with a pin for engaging with the auxiliary arm is fixed to the rotating shaft. 2. The tea bag supply device according to claim 1, wherein an adsorber is provided on the auxiliary arm. 3. After the holding arm is rotated and the bag is held by the bag holder provided at the tea leaf supply port, the adsorber of the holding arm is opened to release the bag from the holding arm, and the bag holder is opened together with the bag holder. The tea bag supply device according to claim 1 or 2, wherein the bag is raised to reverse the rotation axis, and the holding arm and the auxiliary arm are returned to their original positions.