JPH0659890B2 - Rotary type bag mouth binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to packaging of a bag in which a clip arm is rotated around a first axis and is hung down on the clip arm while the bag is moving on a rotation track. The present invention relates to a bag mouth bundling device which is suitable for a rotary bag packing machine and is used for catching bags to be removed from the bag packing machine for bundling.

(Prior Art) A bag-filling machine that supplies a bag containing an object to be packaged to a rotary tying device is generally interrupted along a circular path with a pair of clip arms. Although it is configured to fill an object to be packaged in a bag which is being transported and intermittently conveyed, as a device for binding a package formed by such a bagging machine, it is conventionally disclosed in Japanese Utility Model Publication No. 55-33931. A device for bundling a package placed on a flat plate while moving it in the rotational direction, and Japanese Patent Laid-Open No. 62-182017 discloses a package supplied from a bag tying machine by a pair of wall plates. Disclosed is a device that is supported by a pressing force, and a bag mouth of a package body in such a supported state is narrowed down and bound.

(Problems to be Solved by the Invention) In the device disclosed in Japanese Utility Model Publication No. 55-33931, the upper surface of a flat plate is used as a reference to bind a certain height portion of the flat plate, but it is an unstable flat bag. However, the height from the plate reference surface to the bag mouth varies from bag to bag due to the relationship with the shape of the article to be packaged inside, so that the same location cannot be bound in each bag.

In the device disclosed in Japanese Patent Laid-Open No. 62-182017, the package is held by a pair of wall-shaped plates to bind a certain level portion at all times, but a pair of plates having different shapes is also used. When held by a wall-shaped plate, the bag mouths have different heights, and there is a problem that the same place cannot be bound.

(Means for Solving the Problem) In view of the above points, the present invention receives a packaged product in a hanging manner by a clamp without releasing the packaged product by a bagging and packaging machine and dropping the packaged product, and in this state, the bag mouth In order to achieve such a purpose, in order to achieve this purpose, a plurality of arms are radially projected from the upper surface of the disk fixed to the upper end of the cylindrical spindle vertically supported on the machine base, Clamping movable claws are arranged at the tips respectively, rods having one ends connected to the movable claws are arranged along the respective arms, and the movable claws are moved by the tension of the spring wound around the rods. While urging so as to perform a clamping action, the other end of each rod is pressed against the cam plate fixed to the upper end of the sub shaft rotatably provided in the main shaft by the tension of each spring. Push rod The movable claw to open, and the main shaft is connected to a power source so as to rotate intermittently at the same pitch as the mounting interval of each arm, and the main shaft is rotated after the sub shaft is rotated integrally with the main shaft. It is connected to a power source so that it reverses and returns to the original position while it is stopped, and the pressing force against the rod of the cam plate is released by the reverse rotation of the sub-shaft, and the movable claw facing the bag packing machine. While holding the packaging bag clamped, the pair of holding arms are rotatably supported on the discs on both sides of each arm via pins, and the groove cams fixed on the machine base are provided with the respective holding arms. The operation arms of the holding arms are engaged, and the grooves of the groove cams are formed so that the open ends of the pair of holding arms come close to each other while the disc makes one rotation, and are further bound to the passage area of the pair of holding arms. It has a mechanism installed.

(Operation) A plurality of arms are radially projected from a disk fixed to the upper end of the main shaft, and movable claws for clamping are openably and closably supported at the tips of the arms. Further, a rod connecting one end of each movable claw is arranged along each arm, and the tension of the spring wound around each rod urges each movable claw to perform a clamping action. In short, the movable claws are normally kept in a state of clamping the packaging bag, and the main shaft is intermittently rotated at the same pitch as the mounting interval of the arms. Further, by making the stop position of each movable claw face the bag packing machine, the movable claw for clamping can be stopped at the position where the bag packing machine releases the packaged product.

Further, a cam plate is fixed to the upper end of a sub shaft arranged in the cylindrical main shaft, and the other end of each rod provided along each arm is pressed against the cam plate by the tension of the spring. From this, the projecting action of the cam plate is transmitted to the movable claw via the rod, and the movable claw can be greatly opened at the position where the bagging and packaging machine releases the packaged product, and the posture for clamping the packaged product can be prepared.

Further, since the sub shaft is rotated integrally with the main shaft and then is rotated in the reverse direction to return to the original position while the main shaft is stopped, the movable pawl is suspended by the bag packing and packaging machine. The packaged product in the closed state is stopped in the state of being greatly opened, and the movable claw clamps the upper end of the packaged product by reversing the stopped sub shaft and the cam plate. When the front and rear packaged products are released from the bagging and packaging machine, the packaged products are individually supported by the arms and the movable claws and transported.

On both sides of each arm, a pair of holding arms are rotatably supported via pins, and the operating arms of these holding arms are engaged with groove cams, so that the arms carried by the disc rotate once. In the meantime, since the open ends of the pair of holding arms are made to approach each other by the guide of the groove cam, the mouth portion of the packaged product supported by the movable claws at the tips of the respective arms approaches the pair of holding arms. Because it passes through the installation area of the bundling mechanism of the packaged product that is narrowed down by the
The mouth of the packaged product is bound with tape or wire.

(Embodiment) Referring to FIG. 1, a bag packing and packaging machine (10) has a large number of sets of clamp arms (12) (12), which are one pair on the periphery of a circular rotor (11).
... are provided at equal intervals, and the clip (1
3) The packaging bag (100) can be held by (13). The rotor (11) intermittently rotates about the shaft (14) in the direction of the arrow, and the packing bag (100) is supported by the vacuum cup (15) at the section A and is attached to the clips (13) (13). When supplied, the clip holds the packaging bag and rotates in the direction of the arrow, and opens the mouth of the packaging bag at each section in the middle of its orbit to fill the object to be packaged and seasoning liquid, and then at the Y section. The bag mouth is heat-welded with the seal bar (16) (16), and the packaged product (100 ') is further paired with the Z section by the clamp arms (12) (12).
Such configurations are generally known in the art.

On the other hand, the binding device has three arms (21) (21) (2) from the upper part of the disc (20).
1) is projected radially, and a pair of holding arms (22), (23) ... Is installed on both sides of each arm. More specifically, as shown in FIG. 2, a cylindrical main shaft (26) is rotatably supported by a bearing (25) standing on the upper surface of a machine base (24), and the main shaft (26) is rotatably supported.
Bracket (28) on top of disc (20) fixed on top of (26)
And each arm (21) through the pin (29) on the bracket
Each arm has a movable claw (35) pivotally supported at its tip via a pin (30), and one end of which is connected to an operating lever (31) of the movable claw. Rod (35) to the arm
The coil spring (33) wound around the rod is arranged along the (21), and the tension of the coil spring (33) is applied to the head (34) at the other end of the rod.
The movable claw (35) is urged by the tension of the spring (33) so as to always clamp the packaged product (100 ').

Further, in the hollow portion of the main shaft (26), a cylindrical sub shaft (3
7) is rotatably supported, a cam plate (38) is fixed to the upper end of the sub shaft, and a roller (39) rotatably provided on a pin standing on the head (34) of the rod is provided on the cam. The movable claw (35) is opened as shown in the drawing by bringing the cam plate (38) into contact with the peripheral edge of the plate (38) and applying the overhanging action of the cam plate (38) to the rod (32) through the roller (39). There is.

A driving shaft (42) connected to the driving machine via a bevel gear (41) inside the machine base, and a driven shaft (43) provided in parallel with the driving shaft.
And engaged via Geneva top (44), the chain wheel (45) provided on the driven shaft and the chain wheel (46) provided at the lower end of the main shaft are connected via a chain (47), The main shaft (26) is intermittently rotated by 120 degrees by the action of the Geneva top (44). Therefore, in FIG. 1, the three arms (21) (21) (2
1) The disk (20) causes intermittent rotation in the direction of the arrow at the same pitch as the mounting interval of each arm. Further, a groove cam (48) provided on the driving shaft (42) and a lever (49) fixed to the lower end of the sub shaft (37).
And are connected via a connecting rod (50). As shown in FIG. 4, the groove cam (48) has a shape as shown,
Sub-axis (37) at the same time as (26) starts to rotate by 120 degree angle
Also rotates by 20 degrees and stops, and the main shaft (26) stops, and at the same time, the sub-axis (37) reverses by 20 degrees and returns to its original position. Fig. 1 shows the state immediately after the disc (20) has rotated by 120 degrees and stopped, but immediately after this, the cam plate (38) reverses by 20 degrees, so it faces the bagging and packaging machine. The roller (39) of the portion to be dropped falls into the minimum radius portion of the cam plate (38), and the movable claw (35) clamps the packaged product (100 '). Immediately thereafter, the clamp arms (12) (12)
If you place it at the right time to open 00 '),
The packaged product (100 ') is independently supported by the arm (21) and conveyed by rotating the disc (20).

As shown in FIG. 1, a pair of holding arms (22) and (23) are pivotally supported on the disc (20) on both sides of the arm (21) through pins (51) and (51),
Gears (52) (52) fixed to the both pins are engaged with each other so that the pair of holding arms (22) (23) interlock with each other. As shown in FIG. 2, the disc (20) has a double shape, and the bases of the pair of holding arms (22) are pivotally supported on the lower surface of the disc via pins (51).
The operating arm (53) of the holding arm (22) is engaged with a groove cam (59) fixed around the upper end of the bearing (25). Groove Cam (59)
Shows two endless grooves (55) (56) as shown in FIG.
Forming a pair of holding arms (22) (23)
(53) and (54) are engaged with the grooves (55) and (56). So the spindle
When the disc (20) is rotated by (26) and the operating arms (53) (54) of the holding arm supported by the disc run along the grooves (55) (56), the spindle (26) Pair of holding arms (22) (2
The open end of 3) approaches, and the mouth of the packaged product (100 ') is narrowed down between the recesses (57) (57) at the tip (see the diagonally lower right state in FIG. 1). A known tape binding mechanism (60) is provided in the traveling area at the tip of the holding arm, and a packaging product (10) narrowed by the holding arms (22) and (23) is attached to the binding mechanism (60).
By passing 0 '), as shown in FIG.
The neck of (100 ') is bound with the tape (61) and the pair of holding arms (22) and (23) are opened, so that the bound packaged product falls downward.

As shown in FIG. 2, a core rod (62) is installed in the hollow portion of the sub shaft (37) with its lower end fixed to the machine base, and a circular guide plate (6
3) is provided in the shape of an umbrella, and the rails (64) at the periphery of the guide plate
On the other hand, a wheel (66) at the tip of a hook rod (65) provided on the upper part of each arm (21) is engaged with the rail (64) while forming a slope on the. This causes the wheels (6
6) rolls on the rail (64), and the wheel (66) reaches the highest position of the rail (64) immediately before binding the bag mouth, so that the packaged product (100 ′) Is pin (2
It is lifted up around 9) as an axis, and in this state, it is bound by tape (61) as shown in FIG. In this way, the length (T) from the bag mouth to the tape is set. This length
The adjustment of (T) is possible by displacing the guide plate (63) up and down by the screw rod (67) screwed into the upper end of the core rod (62) in FIG.

It is also possible to operate the rod (32) of the movable claw (35) provided on each arm (21) with a solenoid so that the cam plate (38) supports the command signal to the solenoid.

(Effect) In the present invention, the movable claw provided at the tip of the arm is closed at the position where the pair of clamp arms of the bagging and packaging machine holds the bagging package held by the movable claw so that the upper side of the package is closed. It is designed to be bound to the package that is caught and supported by the movable claws in a hanging manner.The lower part of the package is bound based on the upper side of the package held by the movable claws. Compared to a device that binds on the basis of or that holds the package in a sandwiched manner from the front and back, it always repeats the same position of the bag regardless of the shape of the packaged object stored in the package. There is an effect that can be united.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
II-II sectional view, FIG. 3 is a III-III line view in the previous figure, FIG. 4 is a IV-IV line view in FIG. 2, and FIG. 5 is a perspective view of the bound product. (10) …… Bag packing machine, (12) …… Clamp arm, (20)…
… Disc, (21) …… arm, (22) (23) …… holding arm, (24)…
… Machine stand, (26) …… Spindle, (30) …… Pin, (31) …… Operating lever, (32) …… Rod, (33) …… Coil spring, (3
4) Bed, (35) Movable claw, (37) Sub axis, (38)
…… Cam plate, (39) …… Roller, (42) …… Driving shaft, (44) ……
Genebus top, (53) (54) …… Closed arms, (55) (56) ……
Groove, (59) …… Groove cam, (60) …… Binding mechanism, (100) …… Packaging bag (packaging product)

Claims (2)

[Claims] 1. A disk is fixed to the upper end of a cylindrical main shaft rotatably and rotatably supported by a machine base, a plurality of arms are radially projected from the upper surface of the disk, and clamped at the tips of the respective arms. Movable claws are provided, and rods having one ends connected to the movable claws are arranged along the arms, respectively, so that the movable claws perform a clamping action by the tension of the spring wound around the rods. The rods come into contact with the bulging portion formed on a part of the cam plate fixed to the upper end of the sub-shaft that is urged and rotatably provided in the main shaft, so that the movable pawl is moved against the tension of each spring. The main shaft is connected to a power source so that the main shaft is opened, and the main shaft is intermittently rotated at the same pitch as the mounting interval of each arm, and the main shaft is stopped after the sub shaft is rotated integrally with the main shaft. While reversing while reversing Connected to a power source so as to return to,
By the reverse rotation of the sub shaft, the cam plate bulge releases the pressing force against the rod, whereby the movable claw performs the clamping action, and the position where the pair of clamp arms of the bag packing machine releases the package. While facing each other, the pair of holding arms are rotatably supported by the discs on both sides of each arm via pins, and the operation arms of the holding arms are engaged with a groove cam fixed on the machine base. Of the groove cams so that the open ends of the pair of holding arms come close to each other in a partial range during one rotation of the circular plate and the bag mouth of the package suspended from the movable pawl is narrowed. A rotary-type bag mouth binding device in which a groove is formed and a binding mechanism is installed in the passage area of a pair of holding arms. 2. A disk is fixed to the upper end of a cylindrical main shaft which is rotatably supported on a machine base vertically, a plurality of arms are radially projected from the upper surface of the disk, and clamped at the tips of the respective arms. A movable claw for use is provided, and a rod having one end connected to each of these movable claws is arranged along each arm, and the movable claw is clamped by the tension of the spring wound around each rod. The main shaft is connected to the power source so that the disc rotates intermittently at the same pitch as the mounting interval of each arm, while the upper end of the core rod installed in the cylindrical main shaft is placed on the disc. The other end of each rod is pressed into contact with the peripheral surface of the cam plate which is projected and is supported on the upper portion of the core rod, and a part of the peripheral surface of the cam plate is bulged outwardly so that each arm surrounds this cam plate. When rotating, push out the rod with the bulging part of the cam plate After the rod is released, when the rod falls from the bulging part, the bag mouth supported by the bagging and packaging machine is held by the movable hook, while it is supported by the movable hook to wrap the binding material around the bag mouth. In a rotary bag mouth bundling device in which the mouth of a bag that is being transported is squeezed with a pair of holding arms, the ends of each arm are supported by the disc through pins, and each arm is pinned. While being displaceable in the vertical direction about the axis, a circular guide plate is set so that it can be fixed at an arbitrary upper and lower position with respect to the upper end of the core rod arranged at the center of the main shaft, and the guide plate is A rotary type bag mouth speed deciding device in which a constant gradient is formed on a rail portion at the periphery of the wheel, and wheels supported on the upper sides of the respective arms are engaged with the rails of the guide plate.