JPH068915A - Bag-filling apparatus and method and the like - Google Patents

Abstract

PURPOSE:To obtain a bag-filling apparatus that is capable of executing a lot of bag-filling works at constant speed with operators in the least number attending without giving damages to substances to be bagged and without permitting errors such as taking a wrong side of the bag or a wrong direction of the substances to be bagged. CONSTITUTION:A bag 1 for taking substances 2 to be bagged therein is supplied, being attracted by air on the front end of a bag-supplying section 20, to a guide section 15 and at the same time, air is blown to the opening 1a of the bag 1 and its lower part, and thereby the mouth of the bag is opened wide while the rear end of the bag is kept from dangling. Then, the opening 1a of the bag 1 placed in the supplying position is held on the guide section 15, and the substances 2 to be bagged supplied to a position for thrusting are thrust into the bag 1 from the rear side of the guide section 15 and after that, the bag 1 held on the front end of the guide section 15 is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bagging apparatus for bagging an object to be bagged and a method therefor. More specifically, it relates to an object to be bagged such as solid food products such as castella and buns. TECHNICAL FIELD The present invention relates to a bagging device and a method thereof capable of rapidly and mass-packing a bag in a proper orientation.

[0002]

2. Description of the Related Art In recent years, in many cases, articles to be packed such as castella and buns are contained in a long and narrow bag in consideration of convenience of sale and purchase. There has not been a device or the like for packing a certain number of such items to be packed into bags at present, and it is the current situation that a certain number of bags are manually packed.

[0003]

However, even when manually packing a certain number of these objects to be bagged by hand, the bagging requires a skill and the bagging work time varies from person to person. Often, the articles to be packaged are accumulated in the process before bagging, which causes a hindrance to each process of the production line of the articles.

Also, there is a certain limit to the manual labor required for bag filling, and it is necessary to increase the number of personnel in order to pack a certain number of bags or more, but it is now easy to secure personnel. Not only that, but labor costs also put pressure on bagging costs.

More importantly, when the size of the bag for containing the articles to be packed is not enough, the bag-filling operation is
More time and labor are required, and there are some cases in which the bagging target article is damaged. In addition, for example, when packing individually packed buns in two layers and packing four buns in one bag, the buns may be mistaken for the front and back, the top and bottom, or the bag may be mistaken for the front and back. It also becomes a cause to reduce.

The present invention has been made in view of the above circumstances, and a bag containing articles to be packed is supplied to the guide section by air suction at the tip of the bag supply section, and an opening of the bag is provided. Air is blown toward the lower surface to widen the opening of the bag and the rear end of the bag is prevented from dripping, and at the supply position, the opening of the bag is held from the inside by expanding the front part of the guide portion, while the bag is held. After the feeding section is moved back to the original position and the conveying section is moved laterally downward to the rear of the guide section, the bagging target article fed to the extrusion position is pushed out from the rear of the guide section into the bag, and then in front of the guide section. The bag holding the narrowed part was removed, and the bag filled with the items to be packed was placed on the lower transport section. A large amount at a constant speed, the front and back of the bag and the objects to be packed. And to provide a bagged apparatus capable of bagging without mistaking the like orientation and the method or the like.

[0007]

[Means for Solving the Problems]

(A) Bagging device A bagging device according to the present invention that is proposed to solve the above-described problem is an article supply unit that sends a bagging target article from an article supply position to an extrusion position, and a bag that is supplied to the extrusion position. A top plate that aligns the articles to be packed with the height of the opening of the guide section, an extrusion unit that pushes the articles to be packed that have been sent to the extrusion position to the front of the guide section, and a rotation direction that separates the front parts of the pair of left and right guide plates from each other. The guide part that moves to hold the bag from the inside of the opening of the bag and forms the extrusion conveyance path, and the bag in the bag stocker
A bag supply unit that adsorbs air one by one and supplies the air to the front portion of the guide plate, an air ejection unit that ejects air toward the opening and the rear of the bag that is being conveyed, and the bagging target article after bagging. And a control unit that controls each of the units.

(B) Bagging Method On the other hand, in the bagging method according to the present invention, the bag containing the object to be bagged is supplied to the front part of the guide part while being adsorbed by air at the tip of the bag supply part. The air is ejected toward the opening and the lower surface of the bag to widen the opening of the bag, and the rear end of the bag is prevented from sagging. At the supply position, the opening of the bag is expanded from the front part of the guide part and held from the inside. On the other hand, the bag feeding unit is retracted to the original position, the transport unit is laterally moved to the lower rear of the guide unit, and the bagging target article supplied to the extrusion position is extruded into the bag from the rear of the guide unit. It is characterized in that the bag holding the narrowed front part of the guide part is removed, and the bag filled with the bagging target article is placed on the lower conveying part.

(C) Bag feeding section Further, in the bag feeding section which constitutes a part of the bag filling apparatus, a base of a turning arm which is turned by expansion and contraction of a cylinder is provided.
It is characterized in that it is provided with an air suction portion pivotally attached below the guide portion and having an air suction surface at its tip.

(D) Bag stocker In addition, when the bag stocker which constitutes a part of the bag packing device is interlocked with the bag feeding section and the front air suction section at the front end of the bag stocker sucks air, the bag stacker is stacked. And a support plate for moving the upper portion of the bag leaning diagonally in a direction approaching the air suction portion.

(E) Extruding section One of the two air cylinders, which are parallel to each other with the operating directions reversed, is mounted on the frame, and the tip of the piston of the air cylinder is connected via the connecting and fixing member. Is connected to the rear end of the other air cylinder, a push plate is provided at the piston tip of the air cylinder on the side not mounted on the frame, and both cylinders are controlled to operate simultaneously in opposite directions. Characterize.

[0012]

The operation of the bagging apparatus of the present invention having the above characteristics will be described by following the flow of the article to be bagged. The article supply section is arranged at a constant time interval between the supply position and the side extrusion position. When the article supply unit is located at the supply position and the orientation of the bagging target article is aligned and supplied into the article supply unit, the bagging target article is automatically sent to the extrusion position. In conjunction with this operation, the top plate at the upper part of the extrusion position is lowered to hold the bagging target article at the height of the entrance of the guide portion in front of the extrusion position, so that the bagging target article can be easily pushed at the time of extrusion described later. Be pushed out through the guide. still,
Since the top plate moves only slightly, the bagging target article is not damaged, and after the bagging is completed, the original height is restored by the elasticity of the bagging target article itself. It should be noted that since both side plates of the article supply section are located on both sides of the article to be packed at the extrusion position from the article supply section, the movement thereof is restricted by a constant width.

In conjunction with the above operation, the air suction section at the tip of the bag supply section sucks the upper surface of the front end of the frontmost bag in the bag stocker. In addition, the bag group leaning in the bag stocker is lined up in an upward direction with all the openings closed, and immediately before this suction, the bags tilted away from the air suction unit. The upper part of the support plate in the stocker rotates in a direction approaching the air suction portion and stands substantially upright, moving the standing bag group toward the air suction portion to promote suction of the frontmost bag. After sucking the bag in this way,
Since the support plate is rotated again to the original position, a space is provided between the upper part of the adsorbed bag and the upper part of the remaining bag, and it remains when the adsorbed bag is pulled out upward. The bag never lifts.

In this way, the bag supply section with the bag adsorbed by air conveys the bag while the bag is adsorbed, with the tip pivoting toward the rear end of the guide section with the base as a fulcrum. During the transportation, since air is constantly ejected from above the guide portion toward the opening of the bag in the middle of transportation, the bag receiving this air is transported with the opening greatly widened, When the air suction portion is rotated to a position close to the lower side of the front end portion of the guide portion located in front of the pushing position,
The front end portion of the guide portion enters the opening portion, the bag supply portion temporarily stops at this position, and in conjunction with this, the two side plates forming the front end portion of the guide portion open in the separating direction, The front end of the bag pushes the inside of the opening and holds the front part of the bag.

At this point, the air suction by the bag supply unit side is stopped, the bag supply unit returns to the original bag stocker direction, and the rear surface of the bag holding the front portion is constantly jetted from below. When it receives air, it floats in a substantially horizontal state and maintains a state suitable for bagging, which will be described later.
Even when folded, it will be in a state of being extended substantially horizontally.

Then, the conveying section moves from the lower side of the rear of the guide section toward the lower side of the bag, and at the same time as this, the two cylinders constituting the extruding section operate simultaneously and the extruding of the tip end thereof. The plate pushes the bagging target article in the extruding section from behind the extruding position through the guide section and into the bag held at the front end portion of the guide section. Since the operating directions of the two cylinders are opposite and both of them operate simultaneously, an extension distance corresponding to the total extension distance of both cylinders can be obtained. Therefore, the total length of both cylinders can be shortened, and the length of the main body of the device can be minimized, and the expansion and contraction of one cylinder can be completed within the expansion and contraction time of the other cylinder. The expansion / contraction time can be halved.

The rear end side of the guide portion is wider than the front end thereof, and the upper and lower plates of the rear end of the guide portion are bent in directions of separating from each other, and the entrance is wide. Moreover, the article to be packed is easily pushed into the bag through the inside of the guide portion. In particular, even when the size of the bag for the bagging target article is small, the bagging target product is pushed out without being damaged and packed into the bag, and the bagging target product after being packed is the product itself. It immediately restores its original size due to its elasticity.

Incidentally, as the push-out section retreats, the two side plates forming the tip of the guide section move in a direction in which they approach each other, and the bag held thereby is disengaged and drops onto the lower conveying section. Since the difference between the heights of the bag held in the parallel state and the conveying section is small, the bagging target article is not damaged during the fall. The movement of each section is controlled by the control section in the apparatus, and thereafter, this process is repeated continuously at a high speed.

The bagged objects to be packed are
The transfer unit transfers the bag to the next step of closing the bag opening. When the bagging work is performed in this way,
The personnel required for this only need to take out the required number of articles to be packed, align the direction and the front and back, and place it in the supply section.After that, it will be automatically packed, so only the minimum number of people, It is possible to carry out a large amount of bag packing work in a short time. Moreover, since the time required for bagging is always stable, the articles to be bagged do not stay during bagging.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the construction of the bagging apparatus of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a bag used for bagging, FIG. 2 is a perspective view showing a bagged object to be packed, and FIG. 3 is a bag feeding process by a bagging apparatus of the present invention. FIG. 4 is a side view, FIG. 4 is a side view showing a bag packing process by the bag packing apparatus of the present invention, FIG. 5 is a perspective view showing a peripheral portion from the article supply section to the guide section of the bag packing apparatus, and FIG. FIG. 7 is a rear view showing movements of the article supply unit and the push plate of the apparatus, and FIG. 7 is a perspective view showing a process of adsorbing the bag by air and conveying it upward.

As shown in FIGS. 1 and 2, the bag 1 used for bagging according to the present invention has, as an example thereof, a rectangular shape in plan view in the longitudinal direction in which both side surfaces are folded into a flat state. A bag made of aluminum, resin, paper or the like having an opening 1a at one end and having a certain degree of elasticity is applied. An example of the bagging target article 2 contained in the bag 1 is a solid food product such as cake or bun. When the bagging target article 2 is housed in the bag 1, It is necessary to align the front side and the back side of the target article 2 in order to maintain the commercial value.

As shown in FIG. 3, FIG. 5, and FIG. 6, the bagging device A for containing the bagging target article 2 in the bag 1 has a certain length in the front-rear direction at the approximate center thereof. Supply plate 3a
There is an article supply section 3 in which both side ends of the article supply section 3 are erected, and the article supply section 3 is intermittently reciprocated between an article supply position X1 and an extrusion position X2 by an air cylinder 5 supported by a frame 4.

Behind the pushing position X2, two air cylinders 6 and 7 are positioned in parallel with their operating directions reversed, and one of the air cylinders 6 is mounted on the frame 4 and The tip of the piston 6a of the cylinder 6 is connected to the rear end of the other air cylinder 7 via the connecting member 30, and the push-out plate 8 is provided at the tip of the piston 7a of the cylinder 7 on the side not mounted on the frame 4. Cylinder 6p
An extrusion device 9 is located which is controlled so that 7 operate simultaneously in opposite directions. The push-out plate 8 of the push-out device 9 projects beyond the push-out position X2 direction to the vicinity of the front end of the guide portion 15 described later by the simultaneous operation of both cylinders 6 and 7.

Above the push-out position X2, a top plate 11 for aligning the bagging target article 2 supplied to the push-out position X2 with the height of an opening of a guide portion, which will be described later, is placed above the height adjusting bolts 12 and 12. This auxiliary plate 1 is connected to the auxiliary plate 13 of
3, the tip of the piston of the air cylinder 14 supported by the frame 4 is supported.

As shown in FIGS. 3 and 5, the extrusion position X2
The guide portion 15 is located in front of. Such guide portion 15
Is a pair of left and right guide plates 15a, 15a formed by bending the upper and lower ends of the side plates, which are long in the front-rear direction, in a direction in which they approach each other.
Is pivotally attached to the frame 4 via the pins 15b, 15b supported on the outer surface of the rear end with the rear end opening directed toward the extrusion position X2, and is guided by the air cylinder 16 below the guide plates 15a, 15a. The plates 15a, 15a are assembled so that the front portions thereof rotate in a direction in which they separate from each other, and the opening cylinder formed by the pair of left and right guide plates 15a, 15a serves as an extrusion passage for the bagging target article 2. .

The rear ends of the guide plates 15a and 15a are bent outward in a slanting manner to widen so that the bagging target article 2 can smoothly enter. When the front portions of the guide plates 15a, 15a configured as described above spread in the separating direction, the inner surface of the opening 1a of the bag 1 can be spread and the front portion of the bag 1 can be held. .

As shown in FIGS. 3, 4 and 6 and 7.
A base of a rotating arm 18 which is rotated by expansion and contraction of an air cylinder 17 is pivotally mounted substantially below the guide portion 15, and the air suction portion 1 has an air suction surface 19a at its tip.
A bag supply section 20 with 9 is located. Reference numeral 19b is a flexible pipe that sends air to the air suction portion 19. The air suction portion 19 at the tip of the bag supply portion 20 intermittently rotates between the front surface of the bag stocker 21 described below and the lower portion in the vicinity of the front portion of the guide portion 15 by the air cylinder 17 during operation of the apparatus. Between the stop position on the front surface of the bag stocker 21 and the position near the front portion of the guide portion 15, air is in a suction state and the bag 1 in the bag stocker 12 is in a sucked state.
Is sucked and conveyed, and conversely, when returning from the front portion side of the guide portion 15 to the bag stocker 21, air suction is stopped.

The bag stocker 21 has an upper opening and a support plate 22 inside thereof so that the bag 1 shown in FIG. 1 can be stacked and leaned forward and backward with the opening 1a closed. The support plate 22 is interlocked with the bag supply unit 20, and when the air adsorption unit 19 adsorbs air on the upper front surface of the bag 1, the air cylinder 23 operates and the upper portion of the bag 1 is leaned up and leaned. Is erected in the direction of approaching the air suction portion 19, and once the air suction portion 19 has sucked the frontmost bag 1 in the bag stocker 21, the bag is returned to the original position again. With the decrease of the number of bags 1 in the bag stocker 21, the bag stocker 21 is configured to move forward little by little.
When the length of the bag 1 accommodated in the bag stocker 21 is not less than a certain length, the bag stocker 21 is folded in two with the rear end of the bag 1 facing the back side of the bag 1.
It should be housed inside.

As shown in FIGS. 3, 4 and 6, air jetting portions 23a and 23b for jetting air toward the opening 1a of the bag 1 which is being conveyed are installed substantially above the guide portion 15 at the mounting positions. Adjustably equipped. In addition, an air ejection portion 24 that ejects air toward the rear surface of the bag 1 after conveyance is also provided on the lower front frame 4 so that the ejection direction can be adjusted.

On the lower front side of the guide portion 15, a conveying portion 27 including a conveying belt 26 driven by a motor 25.
However, in order not to collide with the rotation of the bag supply unit 20, the air cylinder 28 is operated to intermittently move between the front and lower portions of the guide unit 15.

All of the air cylinders, motors, etc. shown above are provided in the control section 2 of the apparatus body.
The control unit 29 is connected to a switchboard, a timer for each air cylinder, and a solenoid valve (not shown). A return air cylinder is optimally used for each air cylinder, and a compressor for sending air to each air cylinder is provided outside the main body of the apparatus.

[0032]

According to the bagging apparatus and the method thereof of the present invention described above, the bagging operation can be carried out in large numbers with only a minimum number of personnel and always at a constant speed, which is convenient. In addition, it can contribute to the reduction of bagging cost.

Moreover, since most of the bag-filling work is automated, the skilled labor required for bag-filling is not necessary, and the articles to be packed are not retained in the bag-filling process, and the front and back of the bag are not packed. There is almost no possibility of making a mistake in the orientation of the bagging target article or damaging the bagging target article, and it is possible to always maintain stable product quality.

Furthermore, since the extrusion unit of the present invention is controlled so as to simultaneously operate two parallel cylinders whose expansion and contraction directions are opposite to each other, the distance and time required for extrusion are set to 1
It can be halved compared to a book air cylinder, and the device body can be made compact and the bag filling work can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view showing a bag used for bag filling.

FIG. 2 is a perspective view showing a bag-packaged article to be packaged.

FIG. 3 is a side view showing a bag feeding process by the bagging device of the present invention.

FIG. 4 is a side view showing a bagging process by the bagging device of the present invention.

FIG. 5 is a perspective view showing a peripheral portion from an article supply unit to a guide unit of the bagging device.

FIG. 6 is a rear view showing the movements of the article supply unit and the push plate of the bagging device.

FIG. 7 is a perspective view showing a process of adsorbing a bag by air and conveying it upward.

[Explanation of symbols]

 A bag packing device X1 article supply position X2 extrusion position 1 bag 1a opening of bag 1 article 2 to be packed 3 article supply part 3a supply plate 4 frame 8 extrusion plate 9 extrusion device 15 guide part 15a guide plate 18 rotating arm 19 air Adsorption part 19a Air adsorption surface 20 Bag supply part 21 Bag stocker 22 Support plate 23 Air cylinders 23a, 23b, 24 Air ejection part 26 Conveying belt 27 Conveying part 29 Control part 30 Connecting member

Claims (5)

[Claims] 1. An article supply unit for feeding a bagging target article from an article supply position to an extrusion position, a top plate for aligning the bagging target article supplied at the extrusion position with the height of an opening of a guide unit, and a delivery unit for the extrusion position. The push-out section that pushes the object to be bagged in front of the guide section and the front sections of the pair of left and right guide plates rotate in a direction to separate from each other to hold the bag from the inside of the opening section of the bag and form an extrusion conveyance path. A guide part, a bag supply part for sucking air one bag at a time from the bag stocker and supplying it to the front end portion of the guide plate, and an air jet for blowing air toward the opening of the bag being conveyed and its rear part. Section, a carrying section for carrying the bagging target article after bagging, and a control section for controlling each section,
A bagging device comprising: 2. A bag containing a bagging target article is adsorbed by air at a tip of a bag supply section and supplied to a guide section, while air is jetted toward an opening and a lower surface of the bag to form the bag. The opening is wide and the rear end is prevented from dripping, and at the supply position, the opening of the bag is held from the inside by widening the front part of the guide part, while the bag supply part is retracted to the original position to move the transfer part. After the guide part is moved laterally downward and the bagging target article supplied to the extrusion position is pushed into the bag from the back of the guide part, the bag holding the front part of the guide part is removed and the bag is removed. A bag-filling method, characterized in that a bag filled with articles to be packed is placed on a lower transport section. 3. A base portion of a rotating arm that is rotated by expansion and contraction of an air cylinder is pivotally attached below a guide portion, and an air suction portion having an air suction surface at its tip is provided. The bag supply unit according to Item 1. 4. When the upper part of the front surface of the bag is air-adsorbed by the air adsorbing part at the front end of the bag feeding part, the upper part of the bag piled up diagonally is moved in the direction close to the air adsorbing part. The bag stocker according to claim 1, further comprising a support plate. 5. One of the two air cylinders, which are parallel to each other with their operating directions reversed, is mounted on the frame, and the tip of the piston of the air cylinder is attached to the other via a connecting and fixing member. It is connected to the rear end of the air cylinder, has a push plate at the piston tip of the air cylinder on the side not mounted on the frame, and is controlled so that both air cylinders operate simultaneously in opposite directions. The extrusion part according to claim 1.