JP2004131133A - Bag transporting method and device therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag transporting method and a device therefor for reducing cost by increasing bag transporting and processing performances and productivity by providing a bag transporting carrier with a bag carrier supporting a bag for filling a fluid body being loaded on a truck. <P>SOLUTION: Along a bag transporting path, an upper stream side transporting beam and a lower stream side transporting beam are placed on one side of a bag transporting carrier and a delivering beam is placed on the other side of the bag transporting carrier. A plurality of bag transporting carriers are shifted to the delivering beam while they are being received from the upper stream side transporting beam to the lower stream side transporting beam. While each bag transporting carrier is moved by the delivering beam, a fluid body is filled in a bag on a truck. When the bag is filled with the fluid body, the bag transporting carrier is received by the downstream side transporting beam. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bag carrying method and a bag carrying apparatus suitable for carrying a bag filled with a fluid (powder, granular material, liquid) and carrying the bag with the fluid.
[0002]
[Prior art]
Conventional bag transport apparatuses and transport methods are disclosed in, for example, Patent Document 1 (Japanese Patent Application Laid-Open No. 5-131573), Patent Document 2 (Japanese Patent Application Laid-Open No. 2000-85705), and Patent Document 3 (Japanese Patent No. 3088119). As described above, the bags are individually placed on a horizontal bag mounting table (bag carrying carrier) and transferred, and sequentially opened for each bag by opening means and sealing means provided in a transfer path of the bag mounting table. In each case, a mechanism for fitting and sealing a port for injecting or discharging and attaching the port and a bag transporting method have been proposed. In addition, the bag mounting table is switched to the vertical arrangement together with the bag, and the opening of the bag is directed upward, and the opening means, filling means, sealing means, etc. provided in the transfer path allow the fluid (powder or powder) to pass from the upward opening for each bag. There has been proposed a mechanism for filling an opening with a granular material or liquid) and a bag conveying method.
[0003]
[Patent Document 1]
JP-A-5-131573 [Patent Document 2]
JP 2000-85705 A [Patent Document 3]
Japanese Patent No. 308119/0004
[Problems to be solved by the invention]
The conventional bag transport method and the conventional bag transport device have the respective features as described above, but the bags are loaded and transported by the bag transport carrier (bag loading table), and the ports are attached or filled for each bag. It has a structure that does. The bag transport carrier itself does not have a bag opening function, and has a relatively complicated structure and high cost. There are problems such as limitations on bag placement accuracy, opening performance, transport performance, and filling and sealing performance.
If a failure (for example, bag transport error, bag opening failure, bag filling failure, etc.) occurs upstream of the sealing process, the line is stopped and countermeasures are taken. May be overheated and the bag may be damaged so that it cannot be used as a product. As a result, there is a problem that the product yield is reduced.
[0005]
SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, the object of the present invention is to equip a bag carrier with a bag carrier that is mounted on a trolley and supports a bag for filling a fluid, thereby carrying and processing the bag. It is an object of the present invention to provide a bag conveying method and a bag conveying device which can reduce costs by increasing performance and productivity.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an invention according to claim 1 is a bag carrier provided with a cart on which a plurality of bags in which a fluid can be filled are placed in a row. In a bag transport method for transporting a carrier along a bag transport path, an upstream transport beam and a downstream transport beam are arranged on one side of the bag transport carrier along the bag transport path, and the other side of the bag transport carrier. A transfer beam is arranged on the side, and a plurality of bag transport carriers are transferred from the upstream transport beam to the downstream beam while being transferred to the transfer beam, and the individual bag transport carriers are transferred by the transfer beam. Filling the bag on the cart with the fluid, and transferring the bag carrier having been filled with the fluid to the downstream carrier beam. The features.
[0007]
The invention according to claims 2 and 3 relates to the invention of an apparatus used to carry out the bag conveying method, and the invention according to claim 2 comprises a plurality of bags in which a fluid can be filled therein in a row. And a bag transfer path including a bag transfer carrier for transferring the bag transfer carrier, wherein the bag transfer carrier is provided with engaging portions on both sides, and the bag transfer An upstream transport beam and a downstream transport beam engageable with an engaging portion of the bag transport carrier along a path are disposed on one side of the bag transport carrier, and the upstream transport beam and the downstream transport beam are engaged with the other side of the bag transport carrier. A delivery beam engageable with the unit is provided, and the delivery beam transfers individual bag transports on the way of transferring a plurality of bag transport carriers from the upstream transport beam to the downstream transport beam. The bag carrier is loaded with the bag filled with the fluid while the bag carrier is loaded on the downstream side while the bag carrier is shifted while being engaged with the engaging portion of the carrier. It is characterized in that it is configured to be able to be transferred to a carrier beam.
[0008]
According to a third aspect of the present invention, in the second aspect, the bag transport carrier is a left-right paired stand provided with a truck whose traveling is controlled, an upright pair of pins standing on the truck, and upper clamps for supporting the bags. And a guide means provided along the side of the carrier traveling path on which the bag carrying carrier travels, and fitted and controlled to the bag carrying carrier provided on the station side of the carrier traveling path. And a carrier positioning device for setting the bag transport carrier at a predetermined work station.
[0009]
According to the invention, the bag transport carrier in which a plurality of bags are placed in a row on the carriage is arranged on the other side with the upstream transport beam and the downstream transport beam disposed on one side of the bag transport path. And passing the delivery beam to the downstream transport beam while passing the plurality of bag transport carriers to the downstream transport beam by engaging the plurality of bag transport carriers with the engaging portions of the carrier by the upstream transport beam. The bag is filled with the fluid while the bag on the carriage is filled with the transfer beam by moving the bag carrier by the transfer beam by moving the bag carrier by the transfer beam. Since the transport carrier is delivered to the downstream transport beam, the bag transport carrier on which a plurality of bags are mounted can be moved upstream using the upstream and downstream transport beams. Transporting a plurality simultaneously work station downstream from the station, and can be filled continuously fluids by a separate feed for each bag by the way passing beam into a plurality of bags on the bag transport carrier.
This makes it possible to reduce the work time and man-hours required for carrying the bag carrier and filling the bag with the fluid on the bag carrier, thereby improving the carrying, processing performance and productivity of the bag, and reducing costs. it can.
[0010]
Further, according to the third aspect of the present invention, the bag carrier is formed by pin engagement on both sides of the bag by a plurality of pairs of pins provided on the bag carrier of the bag carrier and clamping of the upper portion on both sides of the bag by a pair of left and right clamps. A stable arrangement is provided at a predetermined position with high accuracy and no disturbance occurs in the transfer. The traveling of the bag transport carrier is smoothed by the guide means and the carrier positioning device, and the bag transport carrier can be accurately set at the predetermined position at each work station.
In addition, the upper opening of the bag is ideally opened and closed by the inward movement and reverse movement of both clamps, and the filling, sealing performance, and reliability are effectively improved. , The opening and closing of the bag opening, the filling of the fluid, and the sealing can be easily performed with high efficiency and high precision.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the illustrated embodiments. 1A and 1B are explanatory views of the operation of a bag transport unit according to an embodiment of the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front view. FIG. 2 is a front view of the bag carrier, and FIG. 3 is a side view of the carrier (viewed from arrow II in FIG. 2). FIG. 4 is an IV view of FIG. FIG. 5 is a plan view (A) showing the pallet 500 and a side view (B).
[0012]
In FIG. 1 showing a configuration of a bag transport unit according to an embodiment of the present invention, reference numeral 800 denotes a bag transport unit configured as described in detail later, and a bag in which a plurality of bags 10 are mounted in a row as described below. The transport carrier 100 is installed on both sides of a rail 120 (see FIGS. 2 and 3) constituting a bag transfer path on which the transfer carrier 100 is transferred.
The bag transport section 800 includes an upstream transport beam 801 and a downstream transport beam 802 disposed on one side of the bag transport carrier 100, that is, on one side of the rail 120, along the transport direction of the bag transport carrier 100. And a delivery beam 803 disposed on the other side of the bag transport carrier 100, that is, on the other side of the rail 120.
[0013]
The upstream transport beam 801, the downstream transport beam 802, and the delivery beam 803 are provided with engaging pins 58 on the sides thereof, and these engaging pins 58 are engaged with the engaging holes 59 of the bag transport carrier 100 (see FIG. 3) and moves along the rail 120 so that the bag transport carrier 100 is transported according to the movement of the upstream transport beam 801, the downstream transport beam 802, and the transfer beam 803. I have.
[0014]
The horizontal axis in FIG. 1 indicates the moving direction of the bag transport carrier 100, and the vertical axis indicates the steps of moving the bag transport carrier 100 and filling the fluid. In the figure, (1) to (6) show the steps of moving the bag carrier 100 and filling the bag 10 with the fluid.
According to FIG. 1, a method of transporting the bag transport carrier 100 using the upstream transport beam 801, the downstream transport beam 802, and the transfer beam 803, and filling of the bag 10 mounted on the bag transport carrier 100 with the fluid. The method will be described.
[0015]
A plurality (two in this example) of bag transport carriers 100 in which a plurality (six in this example) of bags are placed in a row on a cart 101 (see FIGS. 2 and 3) are connected to the rail 120 ( (See FIGS. 2 and 3) That is, the upstream transport beam 801 is moved to the downstream side simultaneously by engaging with the engaging pin 58 of the upstream transport beam 801 arranged on one side of the bag transfer path.
In this movement process, the engaging pin 58 of the delivery beam 803 arranged on the other side of the rail 120 is engaged with the bag carrier 100, and the delivery beam 803 is mounted on the bag carrier 100 in the downstream direction. The bag 10 is fed at every pitch of the bag 10, and the filling device 806 fills the bag 10 with the fluid.
[0016]
When the filling of the fluid into all the bags 10 on the bag transport carrier 100 is completed, the bag transport carrier 100 is delivered from the delivery beam 83 to the downstream transport beam 802 arranged downstream. When the predetermined number of bag transport carriers 100 are transferred to the downstream transport beam 802, the downstream transport beam 802 is moved in the downstream direction, and a plurality of the bag transport carriers 100 are transported simultaneously to the next work station.
Incidentally, reference numeral 804 denotes a lifting / lowering means for the bag transport carrier 100, and 805 denotes a free flow conveyor.
[0017]
According to the bag transport carrier transport method and the method of filling the bag 10 with the fluid, the bag transport carrier 100 on which the plurality of bags 10 are mounted is moved upstream using the upstream and downstream transport beams 801 and 802. A plurality of bags 10 on the bag transport carrier 100 are continuously filled by a plurality of bags 10 on the bag transport carrier 100 by simultaneously transporting a plurality of bags from the work station to a work station on the downstream side and simultaneously transferring each bag 10 by the transfer beam 803 on the way. It is possible to do.
[0018]
Next, the configuration of the bag transport carrier 100 will be described with reference to FIGS. 2 to 4. The bag transport carrier 100 includes a plurality of pairs of wheels 102, and has a horizontally long shape whose traveling is controlled by a rail 120 in the direction of arrow A. And a pair of lower leg portions 105a, which are erected on the trolley 101 with a left-right interval W corresponding to the width of the bag 10, and are provided on the upper portions of both lower leg portions 105a. The upper and lower legs 105b are tilted inward with the axis 20 as a fulcrum by the tilt control means 18 as shown by arrows B and B '. A bag carrier 110 having a pin 106 projecting from the front side of each upper leg 105b and a clamp 107 controlled to be opened and closed by the opening / closing means 19 is provided above the upper leg 105b. Yes. Preferably, a plurality of the bag carriers 110 are arranged in the left-right direction as shown. The operation of the bag carrier 100 is controlled by control means (not shown).
400a and 400b are guide means on the rear side and the front side. The guide means 400a and 400b are provided with a support 401, a plurality of horizontal arms 402 attached to the upper part of the support and adjusted back and forth by a nut 403 and the like. It consists of a long guide member 405 made of a pipe or a strip provided between the tip portions, and is disposed along the carrier traveling path on the rear side and the front side of the bag transport carrier 100. The back and front sides of the stand 105 are guided at the middle part thereof to make the traveling of the bag carrier 100 smooth and to prevent the bag carrier 100 from tilting, falling, and swinging at each of the stations 710 to 760 described below. In addition, it improves running performance and smoothes bag processing in each process.
[0020]
The tilt control means 18 is configured as follows.
2 and 3, a lower portion of the upper leg portion 105b is housed in a recess 21 formed in an upper portion of the lower leg portion 105a, and is rotatably supported by a shaft 20 fixed to the lower leg portion 105a. Have been.
A compression spring 24 is loaded between a circular recess 22 formed at the lower end of the upper leg 105b and a circular recess 23 formed at the lower leg 105a. The leg 105b is urged clockwise.
A cam follower 27 is pivotally supported by an arm 26 connected to the cam 25 inserted into the upper leg 105b, and the upper leg 105b is rotated in the direction of arrow C in FIG. Tilt in the direction and maintain that state. Further, the tilting of the upper leg 105b is released by rotating in a direction opposite to the direction of the arrow C by pressing means (not shown).
[0021]
Next, the opening / closing means 19 of the clamp 107 is configured as follows.
That is, in FIGS. 2 and 3, the clamp 107 has a folded surface 30 formed between the upper end portion of the upper leg portion 105b and the upper end portion of the upper leg portion 105b so as to form a flat surface for gripping the bag 10 and bend upward by approximately 180 °. A longitudinal axis 31 is integrally fixed to the folded portion 30.
The vertical axis 31 is rotatably supported by the upper leg 105b and connected to the torsion spring 32 so that the clamp 107 is always urged in the closing direction.
Numeral 33 denotes a cam follower, which is pivotally supported at the upper end of the clamp 107 and, when pressed by a pressing means (not shown) in a direction perpendicular to the plane of FIG.
As shown in FIG. 2, the stand on the left has a symmetrical structure with the stand on the right except for the mounting structure of the cam follower 33.
[0022]
Next, the detailed structure and operation of the carrier positioning device 300 mounted on the upstream transport beam 801 and the downstream transport beam 802 of the transport beam device 800 will be described.
In FIG. 3 showing the detailed structure of the transport beam device 800, reference numeral 50 denotes a transport rail. The transport rail 50 is integrated with a rack 53 that meshes with a pinion 52 driven by a motor 51. Are supported by guide rolls 54 and 55. The guide rolls 54 and 55 are supported by brackets 56 and 57 fixed to the support 401, respectively.
Numeral 58 designates three positioning bins provided corresponding to the respective stations, which are slidably mounted on the rails 50 and which can be disengaged from holes 59 formed in the cart 101. The motor 51 is operated in a state where the positioning pin 58 is inserted, so that the first transport rail 50 moves forward and backward.
[0023]
Reference numeral 302 denotes an air cylinder which is fixed to the support 401, and acts on the positioning pin 58 by using a gripping tool 60 such as a gripper provided at the tip of the rod to move the positioning pin 58 forward and backward to move the pin 58 into the hole 59. Insert or withdraw. A cam follower 61 is rotatably supported by a bracket 62 fixed to the carriage 101.
Reference numeral 63 denotes a stopper which is fixed to a rod of an air cylinder (not shown) and which can abut on the cam follower 61. By contacting the cam follower 61, the bogie 101 is fixed at a predetermined position. I have.
The carrier positioning device 300 ′ opposite to the carrier positioning device 300 is mounted on the delivery beam 803, and has the same structure as the carrier positioning device 300.
[0024]
In FIG. 5, reference numeral 500 denotes a pallet. The pallet 500 is provided with a plurality of concave portions 500a corresponding to the outer shape of the bag 10 on the upper surface, and a plurality of pairs of pins 502 protrudingly provided for each concave portion 500a. A plurality of pairs of pin holes 5 provided on both sides are fitted into the pins 502, and the plurality of bags 10 are pin-engaged and arranged in the concave portion 500a to be stably placed at a predetermined position with high accuracy. The pallet 500 is provided with wheels 503 whose traveling is controlled by control means (not shown) or the like on a bag transfer conveyor 510, and traveling is controlled by rails 504.
[0025]
In such a bag transporting apparatus, as shown in FIG. 3, the bag transporting carrier 100 is accurately fixed and set at a predetermined position by the carrier positioning device 300, and the carrier 400a is prevented from falling down by the guide means 400a. A plurality (for example, 3 to 6) of the bags 10 are sent to the lower side of the bag transfer device 600 by the pallet 500 in a highly accurate horizontal arrangement by the pin engagements 5 and 106, and the plurality of bags 10 are transferred by the bag transfer device 600. After the bag 10 is simultaneously sucked and rotated and transferred to be converted into a vertical suspension posture with the opening 9 facing upward, the bag 10 is advanced toward the front side of each bag carrier 110 of the bag transport carrier 100, and A pair of pin holes 5 provided on both sides of each bag 10 are provided with a plurality of pairs of pin holes 5 provided on both sides of each bag 10 by actuating both clamps 107 provided on both upper sides of the bag carrier 110. The bags 10 are fitted to the pins 106, the bags 10 are pinched and the pins 5, 106 are engaged, and the bags 10 are placed in a predetermined position on the front side of the stand 105 of each bag carrier 110. It is accurately easily transferred to.
[0026]
Next, the motor 51 is operated to move the transport rail 50 through the pinion 52 and the rack 53, as shown in FIG. The bag carrier is moved to the bag opening station, the stopper 63 of the carrier positioning device 300 is operated, and the bag carrier 100 is fixed and set at a predetermined position, and the guide means 400a, The rear side and the front side of the bag transport carrier 100 are supported by 400b, so that the arrangement is such that the deflection is prevented.
The clamps 107, 107 are moderately tilted to the side by a cam (not shown), the interval between them is appropriately shortened, the opening 9 of the bag 10 is appropriately urged to open, and the suction cup is forcibly opened. When the distance between the clamps 107, 107 is reduced by the tilting of the upper leg 105b, the side of the filling chamber 8 of the bag 10 is engaged with the pins 5, 106. With the inclination, the filling chamber 8 becomes an ideal opening that is larger on the opening 9 side.
[0027]
Further, after the stopper 63 is disengaged from the cam follower 61 of the carriage 101 and the positioning pin 58 is pulled out from the hole 59, the bag 51 is suspended by operating the motor 51 to move the transport rail 50. The opened bag carrier 100 is moved to the bag filling / deaeration station 730, and the positioning pins 58 are inserted into the holes 59 in the same manner as described above, so that the bag carrier 100 is set at a predetermined position.
When the bag transport carrier 100 is supported by the guide means 400a and 400b and the back and front sides are prevented from swinging, a required amount of the fluid (such as powder or (Granules, liquids). Further, if necessary, the inside of the filling chamber is evacuated by appropriate means (not shown), and the upper legs 105b, 105b, ie, the clamps 107, 107 are moved outward, so that the opening 9 of the filling chamber 8 is easily closed.
[0028]
Further, when the bag transport carrier 100 that holds the filled and sealed bag 10 is traveling, the bag transport carrier 100 is fixed and set at a predetermined position by the carrier positioning device 300, and is supported by the guide means 400a and 400b, and And the run-out to the front side is prevented.
According to the embodiment of FIGS. 2 to 5, the bag transport carrier 100 includes two lower legs 105 a erected at intervals on a carriage 101 whose traveling is controlled, and two upper legs extended to be tiltable upward. 105b, a pair of left and right stands 105, a pin 106 at the top and bottom of each stand 105, a clamp 107 at the top, and a bag carrier 110 with tilt control means 18 and opening / closing means 19 attached. The upper portion of both sides of the bag 10 is clamped on the front side of the bag carrier 110 by the clamp 107, and both sides of the bag 10 are pin-engaged 5 and 106, so that the bag 10 is accurately hung at a predetermined position of the bag carrier 110 and moves during transfer. Not a stable arrangement. The bag transport carrier 100 is smoothly transported while being guided by guide means 400a and 400b provided along the carrier traveling path 700.
[0030]
In each station formed on the carrier traveling path, the carrier is set at a predetermined position by the carrier positioning device 300, and the guide means 400a and 400b prevent the deflection. Furthermore, the upper opening 9 of the bag 10 is ideally and easily opened and closed by the tilting of the upper leg portions 105b and the movement of the clamp 107 in and out, so that filling and sealing can be easily and accurately performed. The bag can be transported, the opening and closing of the opening can be performed, and the filling and sealing performance can be obtained.
[0031]
In the above-described embodiment, the embodiment in which the bag 10 is conveyed and filled is described, but the present invention can be similarly applied to other bags. Further, the dimensions, materials, shapes, relative arrangements, and the like of the components can be modified without being specified in the illustrated example unless otherwise specified.
[0032]
【The invention's effect】
The present invention is configured as described above, and according to the present invention, a bag transport carrier on which a plurality of bags are mounted is moved downstream from an upstream work station using an upstream and a downstream transport beam. A plurality of bags can be simultaneously conveyed to the work station, and a plurality of bags on the bag carrier can be continuously filled with the fluid by individual delivery of each bag by a transfer beam on the way.
This makes it possible to reduce the operation time and man-hours for transporting the bag transport carrier and filling the bag on the bag transport carrier with fluid, thereby improving transport, processing performance and productivity of the bag, and reducing costs. it can.
[0033]
Further, according to the third aspect of the present invention, the bag carrier of the bag carrier is formed by pin engagement on both sides of the bag by a plurality of pairs of pins provided on the bag carrier of the bag transport carrier and clamping of the upper portion on both sides of the bag by a pair of left and right clamps. A stable arrangement is provided at a predetermined position with high accuracy and no disturbance occurs in the transfer. The guide means and the carrier positioning device make the traveling of the bag transport carrier smooth, and the bag transport carrier can be set at a predetermined position at each work station with high accuracy.
In addition, the upper opening of the bag is ideally opened and closed by the inward and reverse movement of both clamps, and the filling, sealing performance, and reliability are effectively improved. , The opening and closing of the bag opening, the filling of the fluid, and the sealing can be easily performed with high efficiency and high precision.
[Brief description of the drawings]
FIGS. 1A and 1B are explanatory views of the operation of a bag transport section according to an embodiment of the present invention, wherein FIG. 1A is a plan view, FIG. 1B is a front view, FIG. 2 is a front view of the bag transport carrier, FIG. Side view of carrier (viewed from arrow II in FIG. 2)
4 is a plan view (A) showing the pallet 500 and a side view (B) showing the pallet 500 in FIG. 2;
[Explanation of symbols]
5 pin hole (bag)
9 opening (bag)
DESCRIPTION OF SYMBOLS 10 Bag 101 Cart 100 Bag carrier 105 Stand 105a Lower leg (stand)
105b Upper leg (stand)
106 Pin 107 Clamp 110 Bag carrier 300, 300 'Carrier positioning device 400a, 400b Guide means 500 Pallet 800 Bag transport unit 801 Upstream transport beam 802 Downstream transport beam 803 Delivery beam

Claims (3)

In a bag transport method for transporting along a bag transport path a bag transport carrier provided with carts on which a plurality of bags capable of being filled with a fluid are placed in a row, the bag transport path is arranged along the bag transport path. An upstream carrying beam and a downstream carrying beam are arranged on one side of the bag carrying carrier, and a delivery beam is arranged on the other side of the bag carrying carrier, and a plurality of bag carrying carriers are arranged downstream from the upstream carrying beam. The bag is filled with the fluid while the bag is transferred to the delivery beam while the bag is being transferred to the delivery beam, and the individual bag carrier is moved by the delivery beam. A bag carrying method, wherein a carrying carrier is delivered to the downstream carrying beam. A bag transport device including a bag transport carrier having a plurality of carts in which a plurality of bags capable of being filled with a fluid are mounted in a row, and a bag transport path for transporting the bag transport carrier, The transport carrier is provided with engaging portions on both sides, and the upstream transport beam and the downstream transport beam engageable with the engaging portions of the bag transport carrier along the bag transport path. A delivery beam that is disposed on one side and engageable with the engaging portion is provided on the other side of the bag transport carrier, and the delivery beam transfers a plurality of bag transport carriers downstream from the upstream transport beam. During the transfer to the carrier beam, the fluid is filled for each bag on the cart while engaging the engaging portion of each bag carrier and shifting the bag carrier. Bag conveying device to flow moving object, characterized in that the bag filled is passed configured to be able to bag conveying carrier which is mounted on the downstream transport beam. The bag carrying carrier includes a bag carrier comprising a carriage whose traveling is controlled, and a pair of left and right stands provided on the carriage and provided with upper and lower pairs of pins and upper clamps for supporting the bag. Guide means provided along the side of the carrier travel path on which the carrier travels, and the bag transport carrier provided on the station side of the carrier travel path being controlled to be fitted to the bag transport carrier to set the bag transport carrier at a predetermined work station. 3. The bag conveying device according to claim 2, further comprising a carrier positioning device that performs the operation.

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