JPH1159623A - Automatic piling-up device for packaged bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate processing speed for alternating packaged bags and to increase the speed for piling up the packaged bags with sliding fall occurring at the process of alternating the packaged bags eliminated and also to pile up the packaged bags smoothly in a specified number of pilings without sliding fall, synchronizing with the speed of feeding for the packaged bags, and to move the packaged bags to a transfer part under the state of being piled-up. SOLUTION: In an automatic piling-up device 1 for packaged bag, a pair of alternating/delivery wheel bodies 20 are arranged side by side at places near the downside of two lines of supply means 10, corresponding respectively to each of the two lines. Bag-receiving parts 21 and blind receiving parts 22 are provided alternately at the periphery of the wheel body so that each of the receiving parts becomes opposite to each of the receiving parts of another wheel body. The receiving parts are driven for turning inwardly from above to below at equal speed and moved between the wheel bodies, and thereby packaged bags A, B are piled up at the underside so that the flat parts and the bulging parts of the packaged bags can be put on alternately. Then, two sets of paired opening/closing holding claws 41 of two sets of lifting/ conveying units 40 are moved upward and downward alternately, thereby moving the packaged bags piled up in specified numbers to a transfer part 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically changing the direction of a bulging side of a single package or a continuous package formed by filling and packaging powder granules such as a medicine and a seasoning in a bag such as a thermoplastic resin film. And a device for integrating.

[0002]

2. Description of the Related Art As shown in FIG. 10, in an automatic stacking apparatus 100 in which, for example, double-wrapped packaging bags A and B are automatically and alternately stacked as shown in FIG. The bottomed and bottomless buckets 111 and 112 which receive the packaging bags A and B continuously supplied in the vertical direction (vertical state) at the top dead center position are alternately arranged in a ring shape (total 12). Turning housing wheel 1
10 and buckets 111, 11 at the center of the ring body 110.
2 is provided so as to be reciprocatingly swung over an angle (60 °) corresponding to almost two of
The packaging bag B supplied to the bottomless bucket 11 obliquely downward.
Transfer core body 115 having a passage 115c for guiding the introduction to
And an arc-shaped cover that covers the buckets 111 and 112 in the direction of rotation of the ring from the vicinity of the packaging bag storage position (top dead center position) of the ring 110 to the packaging bag transfer position P1 slightly past the bottom dead center. 113, the packaging bags A which are alternately oriented at the packaging bag delivery position P1 of the ring body 110,
B receiving grooves 121... Formed in the peripheral portion, and a pair of opposed receiving left and right opening and closing two-stage left and right openings formed in a packaging bag stacking portion below the inside thereof. Shutter 12 consisting of a shutter
4 and 125, and a pair of mounted wheels 127 and 127 that receive the four stacked packaging bags A and B from the second-stage shutter 125 and place them on the conveyor rail 107.

[0003]

In the conventional accumulating apparatus as described above, one of the packaging bags B slides down toward the bottomless bucket 112 through a passage 115c formed in the core 115. In some cases, it may become an obstacle in increasing the working speed, or the packaging bag B may be deformed. In addition, a plurality of horizontal opening / closing shutters 1 at short intervals at a small interval during the work of stacking up to a predetermined number by alternately turning the directions.
The stacking posture may be disturbed due to the fact that 24 and 125 are opened and closed and dropped.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional stacking device, and it is not necessary to slide and drop the packaging bag in order to change the orientation of the packaging bag. Accelerates the work speed by accelerating the stacking work speed.In addition, when stacking packaging bags that have been turned around, they can be stacked smoothly without falling down to a predetermined number in synchronization with the stacking thickness. It is an object of the present invention to provide an automatic stacking device for packaging bags that can be transferred to a transfer unit as it is.

[0005]

In order to achieve the above-mentioned object, an automatic stacking device for packaging bags according to claim 1 of the present invention has a thin upper end portion and a swelled lower end portion. A supply means such as a two-row conveyor for gripping and transporting the upper part by a gripper capable of opening and closing the filled packaging bag of a predetermined size, and a pair of juxtapositions corresponding to each row near the lower side of the supply means, A bag receiving portion and an empty receiving portion for alternately receiving the packaging bags alternately left and right by releasing the gripping portion from the supply means are alternately formed on the same number of outer peripheral portions, and rotationally driven at a constant speed from top to bottom on the inside. Provided between the pair of reversing delivery wheels and the pair of reversing delivery wheels, so that the packaging bag in one bag receiving portion is supported by the empty receiving portion on the other side during rotation. The thin end and the bulging end that are almost horizontal An accumulating unit that accumulates the packaging bags so as to overlap each other, so that the packaging bag in the bag receiving unit is turned in both directions while moving from the lower position of the supply means to the accumulating unit, and is brought closer to the center between the transfer wheels. A guide plate provided in a curved shape adjacent to both receiving portions of each of the turning delivery wheels, and the bag receiving portion and the empty receiving portion of the turning delivery wheel are formed of a horizontal rotating shaft. It is formed by partitioning a receiving portion formed between fixed blades projecting at equal intervals radially from the periphery by a swinging blade provided to be swingable in the receiving portion. The intermediate portion of the fixed blades is swingably supported by the rotating shaft. During rotation, the bag receiving portion is greatly opened by the cam shape at the position below the supply means toward the rotating side fixed blade at the position below the supply means, and the transfer wheel is changed in both directions. Rotate to the position where the distance between the bodies is the shortest The cam is controlled so as to take the center position between two adjacent fixed blades before coming, and the bidirectional transfer wheel is set so that the bag receiving portion and the empty receiving portion face each other alternately and are alternately switched. It is characterized by being.

In the automatic packaging bag stacking apparatus according to the first aspect of the present invention, a pair of turning delivery wheels arranged side by side corresponding to each row near the lower part of the two rows of supply means are alternately arranged. The uppermost bag receiving portion receives the packaging bag released from the supply means with the inflated lower end down, and receives the packaging bag according to the rotation, and the bag receiving portion receives the empty package of the other transfer ring. The packaging bag in the bag receiving portion facing the receiving portion and being guided by the guide plate is turned in both directions and brought to the center between the transfer rings so that it is horizontally supported by one bag receiving portion and the other empty receiving portion. Then, the packaging bag is put on the collecting section by further rotating. Since the two-way transfer wheel is rotationally driven at the same speed from top to bottom on the inside, the thin upper end of the packaging bag that was facing upward when received is
As they rotate, they face each other, so that they can automatically change direction and be stacked alternately. Also,
The bag receiving part between the fixed blade and the swinging blade on the rotation direction side increases the working speed because the swinging blade is swung in the rotation direction side by the cam control at the top receiving position and spreads. Even so, it is possible to reliably receive the packaging bag. Furthermore, even if the sealing operation speed in the previous process is increased, or the supply capacity is increased and the receiving processing capacity is increased, the turning direction is changed by forming a large number of bag receiving portions on the outer peripheral portion of the transfer ring. However, in this case, even if the pitch interval of the blades becomes small, the receiving portion can be expanded by the swinging of the swinging blade, so that the packaging bag can be reliably received. The packaging bag slightly falls only when the package is transferred from the supply means to the bag receiving portion, but does not fall during the turning operation and does not give an impact to the packaging bag.

In the automatic packaging bag stacking device according to the second aspect, the guide plate is provided adjacent to each of the outer sides of the fixed blade and the swinging blade, and is supported at the end thereof so as to be replaceable by the apparatus body. Therefore, the guide plate can be reliably moved in contact with the packaging bag even in the case of a single package or a plurality of continuous packages, and the size of the packaging bag can be easily changed.

According to a third aspect of the present invention, there is provided an automatic packaging bag accumulating apparatus, wherein a plurality of packaging bags of a predetermined size filled with powder granules or the like having one end thin and the other end swollen have a thin end and a swollen end. A pair of opposing support claws 2 that open and close left and right below the stacking section that is stacked so that the sections alternately overlap.
After the sets are alternately moved up to the stacking section for each set and the packaging bags stacked in a predetermined number are supported by the support claws in a closed state, the packaging bags are lowered to the lower transfer section to deliver the packaging bags to the transfer section, There are provided two sets of elevating / lowering transport units that raise the stacking unit with the support claws open, and each set of elevating / lowering transport units includes an elevating body that moves up and down along a vertical guide;
Elevating means for elevating the elevating body via a rack and a rack driving gear at least over a distance process between the accumulation unit and the transfer unit, and mounting the pair of support claws at an upper end. A pair of vertically long supports pivotally supported by the elevating body at lower ends so that the support claws open and close left and right, and a cam follower on a side of each support and slidable therewith. Opening / closing means for reciprocatingly driving the pair of supports to the same side in the left, right, inner and outer directions via a swinging moving body having a vertical cam groove which reciprocates in the left, right, inner and outer directions while allowing the vertical movement while engaging with The lifting means is moved up and down via the rack driving gear by a lever provided with a cam follower which is swung by a rotating cam. Place the packaging bag from the top dead center The support claw is lowered by a predetermined number of equivalent distances in synchronization with the stack thickness so that the stack can be stacked without dropping the same, and the other support claw is rapidly lowered after the stacking section is formed, and then the support claw is rapidly lowered. The opening and closing means is configured to reciprocately drive the support by a lever having a cam follower that is swung by a rotating cam. The opening / closing rotary cam is configured such that the support claw is closed from the top dead center to the bottom dead center and is opened from the bottom dead center to the top dead center so as not to interfere with the transfer unit and the packaging bag. The up-and-down rotary cam and the opening and closing rotary cam of the two sets of lifting and lowering transport units are connected to each other at the top dead center while the other support claw is opened immediately before one of the support claws is closed and a rapid descent is started. Has reached It is characterized in that it is set to close timing for the saw superimposed separator.

In the automatic packaging bag stacking apparatus according to the third aspect of the present invention, one of the support claws of the two lifting / lowering transport units is opened by the opening / closing means under the control of the opening / closing rotary cam. Under the condition, the lift cam is alternately lifted to the collecting section by the lift means under the control of the lift rotary cam, and the other supporting claw supports the predetermined number of packaging bags and immediately before the start of the rapid lowering, the opening / closing rotary cam is opened. Under the control, the package is closed by the opening / closing means, and under the control of the elevating rotary cam, the elevating means lowers the packaging bag while supporting it by a predetermined number of distances in synchronization with the stacking thickness. Therefore, the packaging bags can be stacked on the support claws without difficulty even without the conventional multi-stage shutter opening / closing control that involves a drop. Further, the stacked packaging bags are transferred to the transfer unit from above as the support claws reach and pass the transfer unit. The number of stacks can be changed by using a lift rotary cam in which the length of the lift rotary cam synchronized with the stack thickness is changed.

According to a fourth aspect of the present invention, the ascending / descending rotary cam and the opening / closing rotary cam of the two sets of elevating / lowering transport units are rotary groove cams shared by both sets, and are integrated back to back. The cam followers of each set are arranged at positions 180 degrees out of phase with respect to a rotating cam for lifting and lowering that completes one cycle of lifting and lowering at one rotation and an opening and closing rotating cam that closes at top dead center and opens at bottom dead center. Therefore, during one rotation of each cam, the lifting and lowering and opening / closing of both sets of lifting / lowering transport units can be reliably controlled at a constant timing shifted by 180 degrees with a simple configuration.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a partially cutaway elevational view of an automatic packaging bag stacking apparatus (only one set of elevating and lowering units is shown) according to a representative embodiment of the present invention, and FIG. 2 is a skeleton explanation for explaining the driving of the automatic stacking apparatus. 3 (A) to 3 (H) are operation explanatory views showing an operation sequence of one elevating / lowering cycle of the elevating / lowering transport unit of the automatic accumulating apparatus, and FIG. 4 is a diagram showing a supply means and a turning delivery wheel of the accumulating apparatus. FIG. 5 is a plan view showing a moving path of a supply unit of the accumulating apparatus, FIG. 6 is an elevation view showing a control state of a swinging blade of a turning delivery body of the accumulating apparatus, 7A is a longitudinal sectional view of a cam unit in which the lifting rotary cam and the opening / closing rotary cam of the accumulating device are combined, FIG. 7B is a plan view of the opening / closing rotary cam, and FIG.
FIG. 8 is a plan view of a lifting / lowering rotary cam, and FIG. 8 is a horizontal sectional plan view of lifting / lowering means and opening / closing means of both sets of lifting / lowering transport units of the stacking device.

As shown in FIGS. 1 and 2, an automatic packaging bag stacking apparatus 1 as a typical example is, for example,
The upper end of the serial package is thinner and the lower end is swollen, and the packaging bags A and B of a predetermined size in a hanging state filled with powder granules are automatically alternately turned as shown in FIG. The supply means 10 is used to suspend the packaging bags A and B from a bagging and sealing device for powder granules or the like.
A series of hanger conveyors and a conveyor 10 divided into two rows
A pair of the transfer bags 20 are arranged side by side corresponding to each row in the vicinity of the lower side, and the direction of the packaging bags A and B is changed. A predetermined number of stacked packaging bags A and B are stacked and lowered onto the transfer gutter 70 at the transfer position P.
It is composed of

As shown in FIGS. 4 and 5, the hanger conveyors 10 move from the bagging and sealing device in a line overlapping each other in a plan view, and before the pair of reversing delivery wheels 20. Each of the hangers 13 is attached to two lines of conveyors 11 and 12 vertically adjacent to each other.
Are gripping fingers 13A, 13
B holds the packaging bags A and B, and as shown in FIG. 1, one of the swinging fingers 1 is moved by the lowering of the pusher 16 of the hanger opening unit 15 provided above the ring body 20.
By pressing the head 13C of 3B, the fingers 13A, 13
Release B. The right and left pushers 16 are alternately pushed down by a crank mechanism 17 shifted in phase by 180 degrees.

A pair of turning delivery wheels 20 are driven to rotate at a constant speed from top to bottom on the inside facing each other, and a bag receiving portion 21 and an empty receiving portion receiving alternately left and right packaging bags A and B alternately. 22 are alternately formed on the same number of outer peripheral portions, for example, eight each. However, in both the wheel bodies 20, the phase is shifted by 22.5 degrees in the rotation direction such that the bag receiving portion 21 on one side faces the empty receiving portion 22 on the other side. The bag receiving portion 21 and the empty receiving portion 22 are formed by dividing the space between adjacent fixed blades 23, which are radially fixed at equal intervals around the central axis 25, with the swing blade 24. The fixed blade 23 and the oscillating blade 24 have the same shape from the middle part to the outer peripheral part, and are bent in two steps in the direction opposite to the rotation direction, so as to avoid interference with the subsequent packaging bags A and B, and further to perform packaging. I am getting better from the bag.

FIG. 6 shows a swinging blade swinging mechanism that can reliably receive a packaging bag even if the pitch interval between the blades is reduced by increasing the rotation speed or increasing the number of blades. As shown in FIG.
The swinging blade 24 integrated with the support shaft 24A pivotally supported by the flange portion 25A of the center shaft 25 at the center position therebetween is swingably controlled by the groove cam 27 via the cam follower 26. It has become. The cam 27 is fixed to the body (apparatus main body), and at the place where the swinging blade 24 approaches the upper part of the bag receiving position R1 with the rotation of the ring body 20, the cam groove 27A is radially moved from the support shaft 24A. The cam follower 26 is also separated from the support shaft 24A, and the support shaft 24A integrated therewith is pivoted in the rotation direction via the arm 26A, and the swinging blade 24 is moved toward the rotation direction fixed blade 23. Rock it. Thus, the bag receiving portion 21 formed by the swinging blade 24 and the fixed blade 23 on the opposite side in the rotation direction.
Becomes wider. The cam groove 27A is radially closer to the support shaft 24A from a position past the bag receiving position R1, and the cam follower 26 is also closer to the support shaft 24A, and the arm 26
The support shaft 24A is turned to the opposite side in the rotation direction via A, and the swing blade 24 is swung to the center position between the adjacent fixed blades 23,23. The fixed blades 2 facing each other at the standard pitch
3 and the swinging blades 24 support and transport the packaging bags A and B, which become horizontal with the rotation.

In one ring 20, the bag receiving portion 21 receiving the packaging bag A with the rotation faces the empty receiving portion 22 of the other ring 20 and is guided by the guide plate 30 into the bag receiving portion 2.
The packaging bag A or B in 1 is pushed and brought to the center between the two wheel bodies. As a result, the packaging bag is horizontally supported by the one swinging blade 24 and the other fixed blade 23, and is released from both the blades 23 and 24 at the accumulation position R2 by further rotating. The thin upper end of the packaging bag, which was facing up when it was received, because the two reversing delivery wheels 20, 20 are driven to rotate at the same speed from top to bottom on the inside,
As they rotate, they face each other, so that they can automatically change direction and be stacked alternately. The guide plate 30 is provided adjacently on both outer sides of each of the fixed blades 23 and the swinging blades 24, and is supported at its ends 31 and 32 so as to be replaceable by the body. Even a continuous package can be reliably brought into contact with the packaging bag and pushed and moved, and can easily cope with a dimensional change of the packaging bag.

Each of the left and right elevating and lowering transport units 40 is a pair of right and left openable and closable transporters which alternately transport the packaging bags A and B, which are stacked alternately at the stacking position R2, to the transfer position P by a predetermined number. A pair of vertically long supports 42 having support claws 41 at the upper end thereof, and pivotally pivotally swingable at the lower end so as to open and close the right and left along the linear way 43A of the vertical guide fixed to the body. An elevating body 43 which moves up and down, and an elevating drive device which raises and lowers the elevating body 43 over a distance stroke between a stacking position R2 and a transfer position P slightly below the transfer gutter 70 via a rack 58 and a rack driving gear 57 5
0 and a vertical cam groove 45A which reciprocates inward and outward in the left and right directions while allowing the ascending and descending engagement with the opening / closing operation cam follower 42A projecting outwardly below the support member 42 and reciprocating left and right in the vertical state. It comprises a swinging moving body 45 and an opening / closing drive device 60 that reciprocates the swinging moving body 45 left and right inward and outward.

Even if the left and right supporting claws are closed, the supporting claws 41 do not completely contact each other, leaving a gap between them, and the pawl 41 is attached to the left and right portions 70A and 70B of the continuous transfer gutter 70 from above. A notch of the same shape as the nail is formed so that it can pass below. Between the left and right portions 70A, 70B of the transfer gutter 70,
A passage 70C through which the transfer rod 71 passes is provided. Further, the pawl 41 is a support pawl 21 of the two sets of lifting / lowering transport units 40.
Are horizontally protruded from the front and rear supports 42 in a cantilevered state so as not to interfere during the ascent and descent.

Next, the lifting / lowering device 43 drives the lifting / lowering body 43 via a vertically lower rack 58 and a rack driving gear 57 mounted below the lifting / lowering body 43, and the supporting body 42 via a swinging moving body 45. The opening / closing drive device 60 that reciprocates right and left inside and outside will be described. The elevating rotary cam 51 and the opening / closing rotary cam 61, which are also the rotary drive sources,
As shown in FIG. 7A, the lower and upper portions of the same rotary driving body D are integrated in a back-to-back state, and are a rotary groove cam shared by both sets of the vertical transport units 40, and shown in FIG. Is synchronously driven clockwise. The lifting rotary cam 51 which completes one cycle of lifting and lowering the lifting body 43 in one rotation.
Each of the cam grooves 51A, 61A of the opening / closing rotary cam 61, which closes the claw support 42 at the top dead center of the elevating body 43 and opens at the bottom dead center, is provided with a rotatable cam follower of each set of the elevating transport unit 40. 52 and 62 are engaged at positions shifted by 180 degrees for each set.

The mechanism for transmitting the control operation of the cam 51 to the elevating body 43 in the elevating drive device 50 includes a cam follower 52 attached to one end 53A, a lever 53 pivotally supported by the body at an intermediate portion, and other components. A connecting rod 54 connected at the end and extending to the crank arm 54A of the amplification gear 55 to transmit the swing, an amplification gear 55 to amplify the swing, a pinion 56 meshed with the connection, and a coaxial connection with the pinion 56 Rack driving gear 57 and a rack 58. In the opening / closing drive device 60, a mechanism for transmitting the control operation of the cam 61 to the swinging motion member 45 of the support member 42 includes a cam follower 62 attached to an intermediate portion,
A lever 63 pivotally supported by the body at 3A, a connecting rod 64 connected at the other end thereof, and a connecting rod 64 connected to a free end of a lever 65 for branching and transmitting the swinging motion to the left and right claw supports 42; 65 and a pivot shaft 66A coaxial with a pivot shaft 65A supported by the body, supported by the body, connected to a lever 66 connected to the right swinging moving body 45 at the other end, and to a free end of the lever 65, A connecting rod 6 for transmitting the swing to the left swinging moving body 45
7 and a swing direction reversing lever 68, and a pivot shaft 69A coaxial with a pivot shaft 68A supported by the body, supported by the body, and connected to the left swinging moving body 45 at the other end by a lever 69.
And auxiliary parallel links 66B and 69B for reciprocatingly moving the left and right swinging moving bodies 45 in the left and right parallel state. The operation of the components of these two mechanisms is indicated by arrows in FIG. 2, but the operation of the arrows is a preliminary operation for bringing the components into the illustrated state.

The cam grooves 51 shown in FIGS. 7C and 7B
The shape of A, 61A is such that the claw support 42 mounted on the elevating body 43 is moved to the next operation (from FIG. 3 (A) to (H)) via the elevating reciprocating force transmitting mechanism and the opening / closing power transmitting mechanism. Show)
It is set to let. That is, after closing one of the nail support members 42 on the front side at the accumulation position R2 at the top dead center, a predetermined number (for example, 8) is synchronized with the stacked thickness of the packaging bags A and B.
Of the other support 4 on the rear side
2 is raised to the collecting position R2 in a state of opening (FIG. 3
(A)), after closing, one is quickly lowered to slowly pass the transfer position P to the bottom dead center, and the above-mentioned synchronous lowering is started while the other is closed (FIG. 3 (B)), and one is transferred. The packaging bags A and B stacked by passing slowly through the gutter 70 for transfer are transferred to the gutter 70 for transfer, and then opened, and the other is continuously lowered synchronously (FIG. 3 (C)), and one is rapidly raised. And the other is lowered synchronously.
The transfer is started by pushing the upper stacked packaging bags A and B with the push rod 71 (FIG. 3D). At this time, the cams 51, 61
Is rotated 180 degrees, and the above operation (FIG. 3)
(E) to FIG. 3 (H) show that one of the above-described front sides performs a rear-side operation, and the other rear side performs a front-side operation. And transfer is performed.

[0022]

According to the automatic packaging bag accumulating apparatus according to the first aspect of the present invention, a pair of turning delivery wheels are juxtaposed in the vicinity of the lower part of the two rows of supply means so as to correspond to each row. The body alternately receives the packaging bag released from the supply means in the uppermost bag receiving portion with the inflated lower end down, and the bag receiving portion receiving the packaging bag according to the rotation transfers the other bag receiving portion. The packaging bag in the bag receiving portion is pressed by the guide plate so as to face the empty receiving portion of the wheel body, is turned in both directions, and is brought to the center between the delivery wheels, and consequently, the one bag receiving portion and the other empty receiving portion The packaging bag is placed on the stacking part by being further rotated. Since the two-way transfer wheel is rotated at the same speed from top to bottom on the inside, the thin upper end of the packaging bag that was facing upward when it was received will turn to each other as it rotates. It is possible to automatically change the direction and stack alternately.
Further, the bag receiving portion between the fixed blade and the swinging blade on the rotation direction side has a working speed because the swinging blade is swung in the rotation direction side by the cam control at the uppermost receiving position and spreads. Even if the height is increased, the packaging bag can be reliably received. Furthermore, by increasing the sealing work speed in the previous process and increasing the supply capacity, even if the processing capacity is increased, the turning direction can be changed by forming a large number of bag receiving portions on the outer peripheral portion of the transfer ring and increasing the rotation speed. However, in this case, the pitch interval between the blades is reduced. However, since the receiving portion can be expanded by the swing of the swinging blade, the packaging bag can be reliably received. The packaging bag slightly falls only when the package is transferred from the supply means to the bag receiving portion. However, the packaging bag does not fall during the turning operation, so that the impact on the packaging bag can be prevented.

According to the second aspect of the present invention, the guide plate is provided adjacently on both outer sides of the fixed blade and the oscillating blade, and is supported at the end thereof so as to be exchangeable with the apparatus body. Therefore, the guide plate can be reliably moved in contact with the packaging bag even in the case of a single package or a plurality of continuous packages, and the size of the packaging bag can be easily changed.

According to the automatic packaging bag stacking apparatus of the third aspect having the above structure, one of the support claws of the two lifting / lowering transport units is opened by the opening / closing means under the control of the opening / closing rotary cam. In this state, under the control of the rotary cam for raising and lowering, the rotary cam is alternately raised to the collecting portion by the lifting means, and the other supporting claw supports the predetermined number of packaging bags and controls the rotary cam for opening and closing immediately before starting the rapid lowering. Then, the packaging bags are closed by the opening / closing means, and under the control of the elevating rotary cam, the elevating means lowers the packaging bag by a predetermined number of distances in synchronism with the stacking thickness. Therefore, the packaging bags can be stacked on the support claws without difficulty even without the conventional multi-stage shutter opening / closing control that involves a drop. Further, the stacked packaging bags are transferred to the transfer unit from above as the support claws reach and pass the transfer unit. The number of stacks can be changed by using a lift rotary cam in which the length of a corresponding portion of the lift rotary cam synchronized with the stack thickness is changed.

According to a fourth aspect of the present invention, the rotary cam for lifting and lowering and the rotary cam for opening and closing of the two sets of vertical transport units are rotary groove cams shared by both sets. , Back-to-back, and each group of cam followers has a 180-degree phase between the lifting / lowering rotating cam that completes one cycle of lifting / lowering with one rotation and the opening / closing rotary cam that closes at top dead center and opens at bottom dead center. Since it is arranged at the shifted position, it is possible to reliably control the lifting and lowering and opening / closing of both sets of the lifting and lowering transport unit at a constant timing shifted by 180 degrees with a simple configuration during one rotation of each cam. .

[Brief description of the drawings]

FIG. 1 is a partially broken elevational view of a representative embodiment of a packaging bag stacking device (only one set of lifting and lowering transport units is shown) according to the present invention.

FIG. 2 is a skeleton explanatory perspective view illustrating driving of the integrated device.

3 (A) to 3 (H) are operation explanatory diagrams showing an operation sequence of one elevating / lowering cycle of the elevating / lowering transport unit of the accumulating apparatus.

FIG. 4 is a partial perspective view showing a relationship between a supply unit and a turning delivery body of the integrated device.

FIG. 5 is a plan view showing a movement path of a supply unit of the integrated device.

FIG. 6 is an elevation view showing a control state of a swinging blade of the turning delivery wheel of the stacking device.

FIG. 7A is a vertical cross-sectional view of a cam unit combining a lifting rotary cam and an opening / closing rotary cam of the same stacking device.
(B) is a plan view of an opening / closing rotary cam, and (C) is a plan view of an elevating rotary cam.

FIG. 8 is a horizontal cross-sectional plan view of the lifting / lowering means and the opening / closing means of both sets of the lifting / lowering transport units of the integration device.

FIG. 9 is an explanatory diagram showing an accumulation state in which a plurality of packaging bags are oriented in different directions.

FIG. 10 is an elevation view of a conventional packaging bag stacking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic packaging bag accumulation apparatus 10 Supply means 13 Gripping part 20 Redirecting delivery ring 21 Bag receiving part 22 Empty receiving part 23 Fixed blade 24 Swing blade 25 Rotation axis 27 Cam 30 Guide plate 40 Elevating conveyance unit 41 Supporting claw 42 Supporting body 42A Cam follower 43 Elevating body 43A Vertical guide 45A Vertical cam groove 45 Swinging moving body 50 Elevating means (elevating driving device) 51 Elevating rotating cam 52 Cam follower 53 Lever 57 Rack driving gear 58 Rack 60 Opening / closing means (Opening / closing driving device) ) 61 Opening / closing rotary cam 62 Cam follower 63 Lever 70 Transfer unit (transfer gutter) A Packaging bag B Packaging bag R1 Receiving position R2 Stacking unit (position) P Transfer unit (transfer gutter)

Claims (4)

[Claims] 1. An upper end is thin and a lower end is bulged,
A supply means such as a two-row conveyor for holding and transporting an upper part by a gripper capable of opening and closing a packaging bag of a predetermined size filled with powder granules and the like, and corresponding to each row near the lower part of the supply means A pair of side-by-side, bag receiving portions and empty receiving portions, which alternately receive alternately left and right packaging bags by releasing the gripping portion from the supply means, are alternately formed on the same number of outer peripheral portions, and the inner side is from top to bottom, etc. A turning delivery wheel that is driven to rotate at a speed, and a packaging bag provided in a lower portion between the pair of turning delivery wheels during rotation, and a packaging bag in one bag receiving portion is rotated by an empty receiving portion on the other side. An accumulating unit that accumulates the packaging bags so that the thin ends and the swollen ends that are sent while being supported and are substantially horizontal are alternately overlapped, and the packaging bags in the bag receiving unit are positioned at the lower position of the supply means. Between the transfer wheels during transfer from the A guide plate provided in a curved shape adjacent to both receiving portions of each of the turning delivery bodies so as to approach the center, and a bag receiving portion and an empty receiving portion of the turning delivery wheels are provided. Is formed by partitioning a receiving portion formed between fixed blades protruding radially and equidistantly from the periphery of the horizontal rotation axis by a swinging blade provided in the receiving portion so as to be swingable. The blade is swingably supported by the rotating shaft at the intermediate portion between the two adjacent fixed blades. During rotation, the bag shape is greatly opened toward the rotation direction fixed blade at a position below the supply means by a cam shape during rotation. The cam is controlled so as to take the center position between two adjacent fixed blades until the two-way transfer wheel rotates to the position where the distance becomes the shortest distance, and the two-way transfer wheel is alternately arranged. The bag receiving part and the empty receiving part face each other and Automatic stacking device of the packaging bag, characterized in that it is the phase set as switched on. 2. The automatic stacking device according to claim 1, wherein the guide plate is provided adjacent to both outer sides of the fixed blade and the swinging blade, and is replaceably supported at its ends by an apparatus main body. . 3. A lower part of a stacking part in which a plurality of packaging bags of a predetermined size filled with powder granules or the like having one end thin and the other end swelling are stacked so that the thin end and the swelling end alternately overlap. In the above, two pairs of opposing support claws that open and close in the left and right pairs are alternately raised to the stacking unit for each set, and a predetermined number of stacked packaging bags are supported by the support claws in a closed state, and then to the lower transfer unit. There are provided two sets of elevating and lowering transport units for lowering and transferring the packaging bag to the transfer section and raising the stacking section with the support claws open, and each set of elevating and lowering transport units follow the vertical guide. An elevating body that elevates and lowers, an elevating means that elevates the elevating body at least over a distance process between the accumulation unit and the transfer unit via a rack and a rack driving gear, and Each supporting claw is mounted, and the supporting claw is A pair of vertically long supports pivotally supported by the elevating body at the lower end so as to open and close left and right,
The pair of cam followers on the side of each of the support members and a pair of swinging moving members provided with vertical cam grooves which are slidably engaged with the support members and vertically reciprocate inward and outward while allowing the ascending / descending members. Opening / closing means for reciprocatingly driving the support body to the left and right inside and outside to the same side, and the elevating means is provided via the rack driving gear by a lever having a cam follower which is swung by a rotating cam. The lifting rotary cam is moved up and down by a distance equivalent to a predetermined number in synchronization with the stacking thickness so that the support claws can be stacked without dropping a predetermined number of packaging bags from the top dead center that has reached the accumulation portion. Only the support claw is lowered, and the other support claw is rapidly lowered after stacking and separating, and is raised toward the top dead center at the bottom dead center after the transfer unit or passing, The above opening and closing hand The reciprocating drive of the support is performed by a lever having a cam follower that is swung by a rotating cam, and the opening / closing rotary cam has a structure in which the support claw is moved from the top dead center to the bottom dead center. The lifting cam and the opening / closing rotation cam of the two sets of lifting / lowering transport units are closed and opened from the bottom dead center to the top dead center so as not to interfere with the transfer unit and the packaging bag. The packaging is characterized in that one support claw is closed and immediately before starting a rapid descent, the other support claw is opened and the top dead center is reached, and the closing timing for stacking separation is set. Automatic bag stacking device. 4. The rotating cam for raising and lowering and the rotating cam for opening and closing of the two sets of lifting and lowering transport units are integrated with each other by rotating groove cams shared by both sets in a back-to-back manner. 4. The cam follower is disposed at a position 180 degrees out of phase with a lifting rotary cam that completes one cycle of lifting and lowering in one rotation and an opening and closing rotary cam that closes at a top dead center and opens at a bottom dead center. Automatic accumulator.