JPH08301249A - Device for taking out powder in bag - Google Patents

Abstract

PURPOSE: To prevent foreign matter adhering to the external surface of a bag from being mixed into powder in the bag, by cutting the upper end of the bag, which is clamped with a clamping means and suspended, with a cutting means, thereby opening it, and by holding the bag with a bag holding means with the provided opening facing up. CONSTITUTION: A bag Z is suspended with its upper end clamped with a clamping means 40, and is opened by cutting the clamped upper end with a cutting means 50. The cutting means 50 cuts the upper end of the bag Z, an empty space where powder does not exist substantially, therefore dust and the like sticking to the external surface of the bag Z do not enter the bag Z together with a cutting blade 58. Then, the bag Z is held by a bag holding means 70 with the opening made by the cutting process up. Through this opening, the suction mouth of a powder suction means 90 is inserted into the bag. Thus, the foreign matter adhering to the external surface of the bag Z is not mixed into the powder in the bag Z.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for taking out powder in a bag, which is for cutting out the bag to open it and then taking out the powder in the bag to the outside.

[0002]

2. Description of the Related Art Paper (or synthetic resin) bags are cut with a cutting blade to open them, and then powder (powder, particles, relatively small lumps) stored in the bags. etc)
As a powder extraction device in the bag,
Conventionally, various forms have been proposed and put to practical use. A first conventional example of this type of powder extracting device in a bag is a cutting blade which moves a bag horizontally and cuts two side portions of the bag with a cutting blade or rotates three side portions. After opening by cutting by cutting with, the bag is tapped, or the bag is widely opened from the opening and the powder is dropped and taken out. In the second conventional example, the bag is
After fixing by opening two claws in a horizontal state and moving the cutting blade or moving the bag relative to the cutting blade and cutting the bag in two from the center,
The powder is dropped and taken out by directing the opening of each of the two divided bags downward. In the third conventional example, the powder is taken out by inserting the suction port (nozzle tip) into the lower end surface of the bag supported in an upright state and sucking with a vacuum pump. Further, in the fourth conventional example, in a state where the bag is inclined, the corner portion above the bag is cut by a cutting blade to open the bag, and then the bag is turned upside down so that the powder comes out from the opening port. Is configured to be dropped and taken out.

[0003]

[Problems to be Solved by the Invention]

(1) In all of the powder extracting devices in the bag described as the first to third conventional examples, the cutting blade, the claw, or the suction port portion is the portion of the bag where powder is present (filled). It is configured to cut the part). That is, the cutting blade, the claw, or the suction port section cuts the bag, enters the inside of the bag, and directly contacts the powder. Therefore, dust, mud, and other foreign matter attached to the outer surface of the bag will
It enters the inside of the bag together with the cutting blade, the nail or the suction port and gets mixed in the powder. Further, in the case where the cutting blade rotates, there is a possibility that a large amount of bag chips and thread chips are generated in association with the cutting of the bag, and these are mixed in the powder. (2) The powder take-out device in the bag, which is given as the first and second conventional examples, cuts the bag and then taps, opens, or points it downward to open the powder. Is configured to be dropped and taken out. As a result, dust, mud, and other foreign matter attached to the outer surface of the bag are separated, scattered, and fall into the powder.

(3) On the other hand, in the powder take-out device in the bag described as the fourth conventional example, the cutting blade has an empty portion (powder is filled with powder) in which the powder is substantially absent. Since it is configured to cut the empty part), foreign matter adhering to the outer surface of the bag enters the inside of the bag together with the cutting blade when cutting the bag, and mixes with the powder. Does not occur. However, since the powder is taken out by inverting the bag and dropping the powder from the opening,
At that time, foreign matter adhering to the outer surface of the bag falls and mixes into the powder.

As is apparent from the above description, all of the above-mentioned conventional powder extracting devices in a bag have an outer surface of the bag when the bag is cut and / or the powder in the bag is taken out. It can be said that it is not possible to reliably prevent dust, mud, and other foreign matter adhering to the powder from being mixed into the powder. Therefore, in particular, in the fields of pharmaceuticals, foods, and the like, in which the mixing of foreign substances must be strictly controlled, it is the actual situation that the appearance of a further improved powder extracting device in a bag is desired.

The present invention has been made on the basis of the above facts, and an object thereof is to improve so that foreign matter adhering to the outer surface of a bag can be surely prevented from being mixed into powder.
An object of the present invention is to provide a device for taking out powder in a bag.

[0007]

According to the present invention, a clamp means for releasably clamping an upper end portion of a bag, and the upper end portion of a bag in which the upper end portion is clamped and hung down by the clamp means. Cutting means for cutting and opening the bag, bag holding means for holding the bag with the opening formed by the cutting facing upward, and the opening for opening the bag held by the bag holding means And a powder suction means having a suction port inserted into the bag.

The powder extracting device for a bag having the above-mentioned structure further includes a cleaning means for sucking along the cutting opening of the bag when or immediately after the cutting means cuts the upper end of the bag. It is preferably configured.

[0009]

In the powder extracting device for the bag according to the present invention, the upper end of the bag is clamped by the clamp means and hung down. In this state, the clamped upper end is cut by the cutting means and opened. The upper end of the bag is an empty portion that is substantially free of powder. That is, the powder in the bag sinks downward due to its own weight, and an empty portion not filled with powder is formed at the upper end. That is, in the present invention, the cutting means is configured to cut the upper end of the bag, which is an empty portion substantially free of powder. As a result, it is possible to reliably prevent the problem that dust, mud, and other foreign matter attached to the outer surface of the bag enter the inside of the bag together with the cutting blade at the time of cutting and enter the powder. It

The bag is held by the bag holding means with the opening formed by cutting the bag facing upward. This holding is preferably performed before cutting. The suction port of the powder suction means is inserted into the bag through this opening. By the operation of the powder suction means, the powder in the bag is sucked and discharged to the outside through the suction port. That is, in the present invention, instead of inverting the bag and dropping the powder from the opening to take out the powder, the powder inside is sucked to the outside with the opening facing upward. As a result, it is possible to reliably prevent the problem that foreign matter attached to the outer surface of the bag is mixed in the powder.

Further, in the present invention, when the cutting means is configured to include a cleaning means for sucking along the cutting opening of the bag when or immediately after cutting the upper end portion of the bag, the cutting opening Also, foreign matter such as chips and dust attached to the periphery thereof is sucked, so that it does not scatter around. As a result, when the opening mouth is opened, foreign matter is prevented from entering the bag through the opening mouth and being mixed with the powder.

In the present invention, further, a bag opening means is arranged above the bag held by the pair of suction pads, and the bag opening means is a support body vertically movable up and down and a support. A pair of rod members rotatably supported by the body, needle members provided at the lower ends of the rod members, and upper ends of the rod members are connected to rotate the rod members. When configured to include a moving means that selectively opens and closes each of the needle members to a position close to each other and a position separated from each other, in the bag having two layers, the inner bag is attached to the auxiliary suction means. The opening can be made wide enough to insert the suction port. Therefore, even in a two-layer bag, the powder can be sucked and discharged (transported) smoothly and reliably, and the above-mentioned object of the present invention can be achieved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the powder in-bag extracting device improved according to the present invention will be described in detail below with reference to the accompanying drawings. For convenience of explanation, in FIGS.
"Front-back direction" means the left-right direction in FIG. 1 (front-back direction in FIG. 2)
And "width direction" means the left-right direction in FIG.
Direction). With reference to FIGS. 1, 2 and 4, the powder extracting device in the bag, generally designated by the reference numeral 2, includes a frame 4 assembled in a rectangular parallelepiped shape. Support frames 6 and 8 extending horizontally in the width direction of the frame 4 are provided at predetermined height positions of the frame 4, and rack supporting frames 10 extending horizontally are provided on the support frames 6 and 8. 12 is provided movably in the width direction via a guide rail means (not shown). The rack support frames 10 and 12 have substantially the same structure, and each is formed of a hollow rectangular frame member, and has a rectangular shape when viewed from the top surface. Therefore, the rack support frames 10 and 1
2 has a rectangular space surrounded by a frame member.

Each rack support frame 10 and 12 has one
Two racks 10a and 12a are detachably supported. The racks 10a and 12a have substantially the same configuration. Each rack 10a has a rectangular parallelepiped shape with an open upper end, and as shown in FIG. 2, both side portions in the left-right direction are provided with support flanges whose bottom surfaces are horizontal. Then, by mounting and fixing these pair of support flanges on both left and right sides of the rack support frame 10, each rack 1
0a are orderly supported in the space of the rack support frame 10 while being adjacent to each other. Similarly, each rack 12a is also supported by the rack support frame 12 using the support flanges provided for each rack 12a. Each rack 10a and 12a
Is formed in such a size that a bag Z having a predetermined size can be stored (placed) therein in an upright state so as to be freely taken out, and at least an upper end portion of the bag Z projects upward by a predetermined height. ing. As is clear from FIGS. 7 and 9, a substantially rectangular elongated hole 13 is formed at the center of the bottom of each rack 10a and 12a. This hole 13
As will be described later, a support plate 26 that is moved up and down by an air cylinder 22 provided on the auxiliary moving carriage 18 is formed to have a size that allows it to pass without interfering with the bottoms of the racks 10a and 12a (FIG. 9). reference).

Rack support frame 1 on which the rack 10a is supported
0 is arranged on the left side of the frame 4, and the rack support frame 12 supporting the rack 12a is arranged on the right side thereof. The rack support frames 10 and 12 are set positions inside the width direction of the frame 4 (positions shown by solid lines in FIGS. 2 and 4—only the racks 10a and 12a are shown in FIG. 4).
And a bag storage position on the same outer side (position indicated by a chain double-dashed line in FIGS. 2 and 4—only racks 10a and 12a are shown in FIG. 4). With the rack support frames 10 and 12 pulled out to the bag storage positions, the powder-containing bags Z are stored in the racks 10a and 12a in an upright state. Then, the rack support frames 10 and 12 are pushed into each other and positioned at the set position. The rack support frames 10 and 12 are set at the same position as the rack support frame 10
, 12 and the support frames 6 and 8 respectively, and is defined by a well-known releasable locking mechanism (for example, a pin and a clip) not shown. The area where such rack support frames 10 and 12 are present defines a bag loading area, and each rack 10a supported by the rack support frame 10 and each rack 12a supported by the rack support frame 12 are respectively loaded by a bag. Constitutes a means.

A pair of lower guide rails (not shown) are provided on the lower portion (bottom portion) of the frame 4 so as to extend in the front-rear direction. Each of the lower guide rails is provided along a position near both side portions of the frame 4 in the width direction.
A lower moving carriage 14 having four wheels is movably supported on the lower guide rail. Lower trolley 14
As shown in FIGS. 1 and 2, the dimension in the front-rear direction is relatively short, and the dimension in the width direction is relatively long according to the width of the lower guide rail. An electric motor 16 for traveling is attached to the lower moving carriage 14, and the driving force of the electric motor 16 is transmitted to the front wheels of the lower moving carriage 14 via a pulley, a belt or the like which is a transmission means. (See also Figure 5). The lower carriage 14 can be freely moved in the front-rear direction along the lower guide rail according to the forward rotation and the reverse rotation of the electric motor 16. The pair of lower guide rails are provided in such a range that the lower carriage 14 can reciprocate in the bag mounting area.

Although not shown, a pair of auxiliary guide rails are provided on the lower movable carriage 14 so as to extend in the width direction. An auxiliary moving carriage 18 having four wheels is movably supported on the auxiliary guide rail. An air cylinder 19 is attached to the lower end of the lower moving carriage 14 at the left end in FIG. 2 so as to extend in the horizontal direction. The piston rod of the air cylinder 19 is used for the auxiliary carriage 18
Is connected to the left end of. Therefore, the air cylinder 1
As shown in FIG. 2, the auxiliary moving carriage 18 can be freely moved between the A position on the left side and the B position on the right side of the lower moving carriage 14 in accordance with the contraction and extension actions of the piston rod 9 of FIG. .

Bag pushing means 20 is provided on the auxiliary moving carriage 18. That is, a horizontally extending plate-like bracket is provided at a predetermined height position on the auxiliary moving carriage 18, an air cylinder 22 for pushing up the bag is provided at the center of the bracket, and a cylindrical shape is provided on both sides thereof. The guides are mounted so as to extend parallel to the vertical direction. A guide rod 24 is slidably fitted to each guide. The upper end of the piston rod of the air cylinder 22 and the upper end of each guide rod 24 are connected to the lower surface of a single elongated support plate 26 that extends horizontally in the width direction.
Therefore, the contraction of the piston rod of the air cylinder 22,
According to the extension action, the support plate 26 is moved up and down while maintaining the horizontal state, as shown in FIGS. 1 and 2.

A pair of upper guide rails (not shown) are provided on the ceiling of the frame 4 so as to extend in the front-rear direction. Each of the upper guide rails is provided along a position near both side portions of the frame 4 in the width direction. An upper moving carriage 28 having four wheels on the upper guide rail 28
Is movably supported. The upper moving carriage 28 has substantially the same configuration as the lower moving carriage 14. An electric motor 30 for traveling is attached to the upper moving carriage 28,
The driving force of the electric motor 30 is configured to be transmitted to the front wheels of the upper moving carriage 28 via a pulley, a belt or the like which is a transmission means. The upper carriage 28 can be freely moved in the front-rear direction along the upper guide rail in accordance with the forward rotation and the reverse rotation of the electric motor 30. The pair of upper guide rails are provided in the front-rear direction of the frame 4 over a substantially entire area.

A pair of auxiliary guide rails (not shown) are provided on the upper carriage 28 so as to extend in the width direction. An auxiliary moving carriage 32 having four wheels is movably supported on the auxiliary guide rail. The air cylinder 3 is provided at the left end of FIG.
4 are mounted so as to extend in the horizontal direction. The piston rod of the air cylinder 34 is connected to the left end portion of the auxiliary moving carriage 32. Therefore, according to the contraction and extension actions of the piston rod of the air cylinder 34, the auxiliary moving carriage 32 freely moves between the A position on the left side and the B position on the right side of the upper moving carriage 28, as shown in FIG. Can be moved. These configurations are substantially the same as those around the auxiliary moving carriage 18 of the lower moving carriage 14 described above.

With reference to FIGS. 1 to 3, the auxiliary moving carriage 32 is shown.
A horizontally extending plate-shaped bracket is provided below the bottom of the bag, and an air cylinder 36 for suspending the bag is provided at the center of the bracket, and cylindrical guides are provided on both sides of the air cylinder 36. It is mounted so as to extend parallel to the direction. A guide rod 38 is slidably fitted to each guide. A clamp frame 39 is attached to the lower end of the piston rod of the air cylinder 36 and the lower end of each guide rod 38. In response to the contraction and extension of the piston rod of the air cylinder 36, the clamp frame 39
Can be moved up and down while maintaining a horizontal state, as shown in FIGS. Referring to FIGS. 5 and 6 together with FIGS. 1 to 3, the clamp frame 39 is provided with clamp means 40. The clamp means 40 is arranged at a distance in the vertical direction of the clamp frame 39.
Includes 4 clamping tools. Since each of the clamp tools has substantially the same configuration, the configuration of the lower clamp tool will be described below, and the same portions of the upper clamp tool will be denoted by the same reference numerals and description thereof will be omitted.

The lower clamp tool has a holding plate 42, which is a pair of clamping members having a size extending over substantially the entire width of the bag Z in the width direction, and a pair of holding plates 42, which approach and separate from each other. And a pair of air cylinders 44 that can be moved in any direction. The air cylinders 44 forming the moving means are coaxially and horizontally positioned so as to face each other. On both sides of the air cylinder 44, cylindrical guides 45 (see FIG. 6) are attached to the clamp frame 39 so as to extend in parallel to the horizontal direction. Each guide 45
A guide rod 46 is slidably fitted in the. The holding plate 42 is connected and supported by the piston rod of the air cylinder 44 and the tip of the guide rod 46, respectively. Therefore, according to the contraction and extension action of the piston rod of each air cylinder 44, the pair of holding plates 42 are spaced apart from each other as shown in FIGS. 5 and 6, or shown in FIGS. 7 and 8. Thus, they are moved so as to approach each other and be pressed against each other (at this time, the upper end of the bag Z is clamped). Such operations are controlled so as to be performed in synchronization with each other in the upper and lower clamp tools. The auxiliary moving carriage 32, the upper moving carriage 28, and the like, which are provided with the respective clamp tools, constitute a bag transfer means.

As is clear from the above description, the range of movement of the lower carriage 14 in the front-rear direction is approximately the bag loading area, but the range of movement of the upper carriage 28 in the front-rear direction is the bag loading area. It is possible to move further forward (to the left in FIG. 1) beyond. Further, in the range of the bag loading area, the lower moving carriage 14 and the upper moving carriage 28 are controlled so as to move in synchronization with each other. In FIGS. 2 to 4, the lines of the lower moving carriage 14 and the upper moving carriage 28, in which the auxiliary moving carriages 18 and 32 are located at the position A and move in the front-rear direction, are indicated by reference numeral X, and the auxiliary moving carriages are also shown. A line Y indicates a line in which 18 and 32 are positioned at the B position and move in the front-rear direction.

Next, referring to FIGS. 1, 10 and 11,
The cutting means 50 for cutting and opening the upper end of the bag Z will be described. At the front end of the frame 4 (the left end in FIG. 1) and at a position substantially on the line X, a pair of air cylinders 51 constituting the moving means extend in parallel with each other in the horizontal direction at intervals in the width direction. It is provided to do. Each air cylinder 5
A cylindrical guide 52 is provided in the middle portion of the air cylinder 5
It is arranged so as to extend in the horizontal direction in parallel with 1. A guide rod 54 made of a hollow round pipe is slidably fitted in the guide 52. A support 56 made of a hollow prismatic member is connected to the tips of the piston rods and the guide rods 54 of the air cylinders 51, and a cutting blade 58 is connected to and supported by the tip of the support 56. Support 56
And the cutting blade 58 extends horizontally in the width direction of the frame 4,
The cutting blade 58 has a width exceeding the entire width of the bag Z. The cutting blade 58 contracts the piston rod of each air cylinder 51,
In accordance with the extension action, the support body 56 is reciprocated in the front-rear direction of the frame 4.

Referring also to FIGS. 15 and 16, the support 5
A pair of suction slits 59 are formed in the upper and lower parts of the cutting blade 58 which sandwich the cutting blade 58. That is, each suction slit 5
9 is positioned behind the cutting blade 58 so as to extend along the cutting blade 58. The hollow portion of the guide rod 54 and the hollow portion of the support body 56 communicate with each other, and an end portion (left side in FIG. 11) of the guide rod 54, which is not shown, is provided with a bellows-shaped elastic member, a pipe member, a dust collector, and the like. Is connected to a vacuum pump that is a suction source (none of them is shown). Each of these members constitutes a cleaning unit together with each suction slit 59. When the vacuum pump is operated, as shown in FIG. 16, the air around the upper and lower edges of the cutting blade 58 is sucked from each suction slit 59, and the support 56 and the guide rod 5 are removed.
4. It is sucked into the dust collector through the elastic member, the pipe member and the like. The area where the cutting blade 58 is present defines the bag cutting area.

Referring to FIGS. 1, 3, 4, and 17,
A pair of support frames 62 and 64 extending horizontally in the width direction are provided at a predetermined height position in front of the bag loading area of the frame 4. Each support frame 62 and 64
Guide rails (not shown) are provided along the upper portions. A movable carriage 66 having four wheels is movably supported on the guide rail. An air cylinder 68 is attached to the front left side of the frame 4 so as to extend in the horizontal direction. The piston rod of the air cylinder 68 is connected to the left end of the moving carriage 66. In response to the contraction and extension of the piston rod of the air cylinder 68, the movable carriage 66 moves the A position on the left side of the frame 4 (the position indicated by the solid line in FIG. 17) and the B position on the right side (2 in FIG. 17).
It can be freely moved to and from the position indicated by the dotted line).

Next, the bag holding means 70 will be described. With reference to FIGS. 17, 18 and 21, a pair of support portions 71 and 72 extending in the vertical direction are provided on the moving carriage 66 at intervals in the front-rear direction. Suction pads 74 and 76 are supported by the support portions 71 and 72, respectively, by a support operation mechanism. Suction pads 74 and 76
The support actuating mechanism described later constitutes the bag holding means 70. Since the suction pads 74 and 76 and their supporting and moving mechanisms have substantially the same configuration, the suction pad 76 and its supporting and operating mechanism will be described as a representative thereof. A pair of air cylinders 78, which constitute a moving means, are provided at the upper end of the support portion 72 so as to extend in parallel in the horizontal direction at intervals in the width direction. Each air cylinder 7
A guide sleeve 80 is arranged (fixed) in the middle of 8 so as to extend in the horizontal direction in parallel with each air cylinder 78. A guide rod 82 made of a hollow round pipe is fitted into the guide sleeve 80 so as to be rotatable and slidable in the axial direction. A plate member 86 is rotatably connected to the guide rod 82 via a dry bearing 84. The dry bearing 84 is mounted so as not to move in the axial direction with respect to the guide rod 82. The tips of the piston rods of the air cylinders 78 are connected to both ends of the plate member 86 that is elongated in the horizontal direction.
A suction pad 76 is connected and supported at the tip of the guide rod 82. The suction pad 76 is made of a container-shaped member whose one end side (the side facing each other) is wide open, and has a substantially rectangular shape when viewed in the front-rear direction. A seal member (not shown) made of synthetic rubber or synthetic resin is arranged around the opening of the suction pad 76.

As shown in FIG. 21, a guide sleeve 76 is provided.
An inclined slit 88 is formed in the. In this embodiment, the slit 88 is formed so that a part of the left side area is formed parallel to the axis and the other right side area is inclined with respect to the axis. On the other hand, a guide pin 89 protruding outward in the radial direction is fixed to the outer peripheral portion of the guide rod 82. The guide pin 89 is engaged with the slit 88. When the piston rod of each air cylinder 78 is simultaneously extended leftward from the contracted home position of FIG. 21, the plate member 86, the dry bearing 84, the guide rod 82, and the suction pad 76 are integrally moved leftward. The pin 89 also moves along the slit 88. Since the slit 88 is formed parallel to the axis during this movement, the guide rod 82 moves without rotating. The suction pad 76 is moved to the defined maximum extension position. When the piston rod contracts to the right, the suction pad 76 moves to the home position without rotating. When the piston rod contracts further to the right from the home position, the pin 89 is moved along the inclination of the slit 88. The guide rod 82 moves to the right while rotating in a predetermined direction. The suction pad 76 is moved to the defined maximum extension position. It goes without saying that the relationship between the axial movement and the rotation of the suction pad 76 can be freely defined by the shape of the slit 88.

Since the supporting and operating mechanism of the suction pad 74 has substantially the same structure as the supporting and operating mechanism of the suction pad 76 described above, the suction pad 74 also performs substantially the same operation as described above. Therefore, in each support actuation mechanism, when the piston rods of each air cylinder 78 are synchronously extended at the same time, each suction pad 74 and 76 becomes
As shown by the solid line in FIG. 18, when the bag Z is moved so as to come into contact with both sides of the body of the bag Z and the piston rods of the air cylinders 78 are simultaneously contracted in synchronization,
As shown by the two-dot chain line in FIG.
Due to this separating action, the opening of the bag Z is widened and the rotation of the suction pads 74 and 76 causes the bag Z to form an acute angle from the upright state (state shown by the solid line in FIG. 17) that extends substantially vertically. The tilted state is extended (the state shown by the two-dot chain line in FIG. 17). The other end side of each suction pad 74 and 76 communicates with the hollow part of each guide rod 82, and the end part (not shown) of each guide rod 82 is sucked (not shown) through an elastic member made of bellows and a pipe member. It is connected to the source vacuum pump (none shown). Therefore, when the vacuum pump is operated in a state where the openings of the suction pads 74 and 76, that is, the seal members are in contact with both surfaces of the body portion of the bag Z, the suction pads 74 and 76 and both surfaces of the body portion of the bag Z become A vacuum is generated in the space formed by, and both sides of the bag Z of the bag Z have suction pads 74 on both sides.
And 76 to be supported by suction (see FIG. 20). Note that the suction pads 74 and 76 can also widen their intervals by contracting only the piston rods of the air cylinders 78 on one side of the suction pads 74 and 76 during the suction action. The rotation mechanism (pin 86, slit 84, etc.) that tilts the suction pads 74 and 76.
Constitutes a means for tilting the bag Z.

Next, the powder suction means 90 will be described with reference to FIGS. 3 and 4. On the front right side of the frame 4, a pair of guide frames 91 and 92 are arranged so as to extend in the vertical direction. An air cylinder 94 is mounted on the upper ends of the guide frames 91 and 92 so as to project vertically upward. A support body 96 is connected to the piston rod of the air cylinder 94. The support body 96 is configured to be movable up and down along the guide frames 90 and 92 by guide means (not shown) provided between the support frames 90 and 92. An upper end of a powder suction pipe (suction nozzle) 98 is integrally connected to the support body 96. The shape of the powder suction pipe 98 is defined so that the upper end of the powder suction pipe 98 extends in the vertical direction and the middle part of the powder suction pipe 98 inclines toward the left side of the frame 4 as it extends downward, and the lower end extends in the vertical direction. The lower end of the powder suction pipe 98 defines a suction port portion, and the upper end is connected to a suction pump as a suction source via a flexible pipe, a pipe member, etc. (neither is shown).
Therefore, the powder suction pipe 98 is moved up and down in the vertical direction in accordance with the expansion and contraction operation of the piston rod of the air cylinder 94, and when the suction port is inserted into the bag Z, the suction pump is operated. The powder in the bag Z can be discharged and transported to a desired container. The region where the powder suction pipe 98 moves up and down to suck the powder thus defines the powder suction region. Therefore, it can be said that the movable carriage 66 equipped with the bag holding means 70 is movable between the bag cutting area and the powder suction area.

With reference to FIGS. 1 and 3, a scraper of the bag Z and a hopper 100 for collecting empty bags are arranged at the front end of the frame 4, that is, below the bag cutting area and the powder suction area. There is. A screw conveyor 102 for compressing and transporting empty bags is attached to the bottom of the hopper 100 so as to extend in the width direction. The screw conveyor 102 is rotationally driven by an electric motor (not shown). The empty bag from which the powder has been discharged in the powder suction area is dropped into the hopper 100 and transferred to the left side in FIG. 3 by the screw conveyor 102.
It is discharged from the discharge port 104.

Next, the operation of the powder take-out device in the bag constructed as described above will be described. First, the outline of the operation will be described. The bag Z taken out in the bag placing area is transferred to the bag cutting area. The bag Z transferred to the bag cutting area is held by the bag holding means, and then the upper end portion is cut by the cutting means. The bag Z whose upper end has been cut is transferred to the powder suction area with the opening opening facing upward. In the powder suction area, the suction port portion of the powder suction means is inserted into the bag Z from the opening port,
The powder is sucked and discharged. These operation controls are performed by a control device including a microcomputer, a sensor provided in each part, a switch, etc., but description thereof will be omitted here.

Next, the operation will be described in more detail. In the bag loading area, the powder-containing bags Z placed in the respective racks 10a and 12a and arranged in an upright state are taken out one by one in a predetermined predetermined order, and then placed in the bag cutting area. Be transferred. As an example, this operation is sequentially performed from right to left in FIG. 1 along each rack 10a arranged in the X line (see FIGS. 2 and 4), and then Y
The order is determined so that the racks 12a arranged in line are sequentially executed from right to left in FIG. This order is appropriately determined for practical use.
Here, as an example, the operation of taking out and transferring the bag Z placed and stored in the rack 10a arranged in the X line in the seventh position from the right in FIG. 1 will be described. 1 and 2
Further, referring to FIG. 4, the upper moving carriage 28 and the lower moving carriage 14 positioned at the right end of FIG. 1 move forward in interlock with each other and are stopped at the predetermined bag mounting position S1. During this movement, the auxiliary moving carriage 32 of the upper moving carriage 28 and the auxiliary moving carriage 18 of the lower moving carriage 14 are respectively positioned at the position A (see FIG. 2) in FIG. Further, the bag lifting means 20 provided on the auxiliary moving carriage 18 is at the lowest position, and the clamping means 40 provided on the auxiliary moving carriage 32 is at the highest position.

The support plate 26 is raised by the air cylinder 22 of the auxiliary moving carriage 18 through the hole 13 (see FIG. 9) at the bottom of the rack 10a, and the bag Z is pushed up to a predetermined height position (see FIG. 5). That is, the bag Z is the bag lifting means 2
It is pushed up in an upright position above the rack 10a by 0. Next, the clamp frame 39 is lowered to the upper end position of the bag Z by the air cylinder 36 of the auxiliary moving carriage 32. The sandwiching plates 42 of the upper and lower clamp tools are at predetermined spaced positions, and are positioned on both sides of the upper end of the bag Z with a predetermined spacing (see FIGS. 5 and 6). The holding plates 42 are moved in the approaching direction by the air cylinders 44 of the upper and lower clamp tools, and the upper end of the bag Z is firmly held (see FIGS. 7 and 8). That is, the upper end of the bag Z is clamped by the clamp means 40. The upper end portion of the bag Z is a region where powder is substantially absent, and is clamped in a state where the inner surfaces thereof are pressed against each other.

The clamp frame 39 is raised to the highest position by the air cylinder 36 of the auxiliary moving carriage 32.
The bag Z is completely pulled out from the rack 10a and is suspended while being clamped by the clamping means 40. The bag pushing means 20 is lowered to the lowest position. The upper carriage 28 is moved to the left in FIG. 1 while the bag Z is suspended,
It moves to the cutting (opening bag) standby position S3 via the position S2 and stops (see FIGS. 10 and 11). The auxiliary moving carriage 32 at the position A in FIG. 2 moves on the X line. When the auxiliary moving carriage 32 is at the position B in FIG. 2, the upper moving carriage 28
The Y line can be moved to the left by moving the auxiliary moving carriage 32 to the cutting standby position S3, and then the auxiliary moving carriage 32 is moved from the B position to the A position by the air cylinder 34. It

Next, the upper moving carriage 28 is moved to the cutting standby position S.
Moved further left from 3 and cut position S, which is the bag cutting area
It stops at 4 (see FIG. 12). Cutting blade 5 of the cutting means 50
Reference numeral 8 is a position close to the left side of the upper end of the bag Z clamped by the clamp means 40, and is positioned at an intermediate portion in the vertical direction of each clamp tool of the clamp means 40. Next, the moving carriage 66 positioned in the powder suction area on the left side of FIGS. 3 and 17 is moved to the bag cutting area (from the two-dot chain line position to the solid line position) by the air cylinder 68. Since the suction pads 74 and 76 provided on the movable carriage 66 face each other with a gap wider than the thickness of the bag Z, they do not interfere with the suspended bag Z during the movement. Suction pads 74 and 76 are spaced on opposite sides of the body of bag Z. Next, the suction pads 74 and 76 are attached to the air cylinder 7.
8 (see FIG. 21), they are moved in a direction in which they approach each other, and stop while being in contact with both surfaces of the bag Z. A vacuum pump provided in association with the bag holding means 70 is operated to suck both sides of the body of the bag Z by the suction pads 74 and 76. Thereby, the bag Z is held by the bag holding means 70 together with the clamp means 40. Therefore, the bag Z can be held extremely reliably.

In this state, the cutting blade 58 moves the air cylinder 5
The bag 1 is moved toward the upper end of the bag Z at a high speed by 1 and cuts across the entire width (see FIGS. 13 and 14). The cutting blade 58 cuts the upper end of the bag Z and stops its movement while crossing it. By operating the vacuum pump of the cleaning means, air is sucked from each suction slit 59 of the support 56 that supports the cutting blade 58 (FIG. 1).
4 and FIG. 16). As a result, chips on the cut surface of the bag Z,
Foreign matter such as dust adhering to the periphery is sucked and cleaned. This suction is performed several times by an intermittent operating means (not shown). After the cleaning is completed, the cutting blade 58 is returned to the home position.

After the cutting blade 58 cuts the upper end of the bag Z and is returned to the home position, the upper one of the two clamping tools of the clamp means 40 releases the upper end of the bag Z. . This action is performed by moving the holding plates 42 in the direction in which they are separated by the air cylinder 44 of the upper clamp tool. As a result, the cut end at the upper end of the separated bag Z is hopper 100.
Fall inside. The lower clamping tool then releases the upper clamp of bag Z. This action is performed by moving the holding plates 42 in the direction in which they are separated by the air cylinder 44 of the lower clamp tool. Bag Z
Are held only by suction pads 74 and 76 (see FIG. 18). The clamping means 40 is raised to the highest position.

The movable carriage 66 positioned in the bag cutting area on the right side of FIGS. 3 and 17 is moved to the powder suction area on the left side (from the solid line position to the two-dot chain line position) by the air cylinder 68. The bag Z is positioned in the powder suction area in an upright state with the opening of the bag up. The powder suction pipe 98 is lowered by the air cylinder 94 of the powder suction means 90, and the suction port at the lower end thereof is inserted into the opening of the bag Z. Then, the suction pump provided in association with the powder suction means 90 is operated to suck and discharge the powder. When the powder is discharged by a predetermined amount, the suction pads 74 and 76 move to the air cylinder 78 (see FIG. 21).
See)) to move in the direction of separation. This separation movement is
Since the suction operation is continued, the bag Z is further spread by the suction pads 74 and 76 (see FIG. 20). With the mechanism shown in FIG. 21, the suction pads 74 and 7
6 is rotated by a predetermined angle, and as a result, the bag Z is moved to the position shown in FIG.
7 and FIG. 19, it is positioned in an inclined state. The lowering of the powder suction pipe 98 is continued until the suction port at the lower end reaches the corner which is the lowest part of the bag Z. As a result, the powder in the bag Z is sucked without substantially remaining.

After the powder in the bag Z is completely sucked, the powder suction tube 98 is raised and returned to the original position (the position shown by the solid line in FIG. 3). The suction pads 74 and 76 are moved toward each other and returned to the home position. Then, the suction operation is stopped. Since the holding of the bag Z by the bag holding means 70 is released, the empty bag Z is replaced by the hopper 10.
It is made to fall in 0. The upper moving carriage 28 moves to the bag loading area again, and is positioned on the upper and lower portions of the next rack together with the lower moving carriage 14. The above cycle is repeated.

In the above-mentioned embodiment, the bag transferred to the bag cutting area is held by sucking both side surfaces thereof with the suction pads 74 and 76. By this suction action, the cutting portion at the upper end of the bag is sufficiently opened, so that the suction port of the descending powder suction pipe 98 is inserted into the bag without interfering with the opening edge. This action is sufficiently reliable when the bag is a single layer. However, when the bag has two layers, the suction action of the suction pads 74 and 76 does not reach the inner bag. Therefore, even if the outer bag is sufficiently opened, the inner bag may not be opened. 22-
FIG. 24 shows an embodiment of the bag opening means 110 used in the bag thus constructed in two layers.

L1 in FIG. 22 is suction pads 74 and 76.
Shows a moving line of the suction port of the powder suction pipe 98 that moves up and down in the vertical direction with respect to the bag Z suction-held by
Reference numeral 2 denotes a moving line of the bag opening means 110 (described later) that moves up and down in the vertical direction with respect to the bag Z at the same position. That is, the moving line L2 of the bag opening means 110 is arranged at the position deviated in the width direction described above with respect to the moving line L1 of the suction port of the powder suction tube 98, and mutual interference does not occur. Note that when viewing FIG. 22 in the left-right direction, the line L1
And L2 are polymerized with each other.

A bag opening means 110 is disposed above the bag Z held by the pair of suction pads 74 and 76 in the powder suction area. The bag opening means 110 includes a support member 112, a pair of rod members 114 and 116 rotatably supported by the support member 112, and a needle member provided at the lower end of the rod member 114 so as to project in the extension direction. 114a, a needle member 116a provided at the lower end of the rod member 116 so as to project in the extension direction thereof, an air cylinder 118 connected to the upper end of the rod member 114, and an upper end of the rod member 116. And an air cylinder 120. Support 1
Although not shown in the figure, 12 is mounted on the frame 4 so as to be vertically movable. The support 112 includes a frame 112a that extends horizontally in the front-rear direction of the frame 4. An air cylinder 122 is attached to the frame 4 so as to extend in the vertical direction, and a piston rod of the air cylinder 122 is connected to the frame 112a.
Therefore, the support 112 is moved up and down by the contraction action of the piston rod of the air cylinder 122.

The frame 112a has a pair of frames 11 extending vertically downward at intervals in the longitudinal direction.
2b and 112c are provided. Rod member 114
An intermediate portion of the rod member 116 is rotatably supported by the lower end portion of the frame 112b, and an intermediate portion of the rod member 116 is rotatably supported by the lower end portion of the frame 112c. Rod member 114
The rotation axis lines of 116 and 116 are positioned so as to extend horizontally and parallel to the width direction of the frame 4. The air cylinder 118 is attached below the left end of the frame 112a, and the air cylinder 120 is attached below the right end of the frame 112a. The air cylinders 118 and 120 are positioned on a common axis line that extends horizontally in the front-rear direction of the frame 4. The piston rods of the air cylinders 118 and 120 project in the directions facing each other, and the piston rod of the air cylinder 118 is connected to the upper end of the rod member 114.
The zero piston rod is connected to the upper end of the rod member 116. The piston rods of the air cylinders 118 and 120 are expanded and contracted in conjunction with each other, whereby the rod members 114 and 116 are simultaneously rotated, and the needle members 11 are rotated.
4a and 116a can be selectively opened and closed between a position close to each other and a position separated from each other.

FIG. 23 shows a state in which the bag Z is held by being sucked by the suction pads 74 and 76 on both side surfaces thereof, transferred to the bag cutting area, and positioned.
Bag Z is an outer bag Z1 (eg kraft paper) and an inner bag Z
Since it is composed of two layers of 2 (for example, polyvinyl chloride), the cut portion at the upper end of the outer bag Z1 is sufficiently opened by the suction action of the suction pads 74 and 76, but the cut portion at the upper end of the inner bag Z2 is sufficiently open. Is not open. Normally, the bag opening means 1 located at an upper position that does not interfere with the transfer of the bag Z.
The support 112 of 10 is lowered to the position shown by the air cylinder 122. The needle members 114a and 116a, which are positioned close to each other, are positioned above the inner bag Z2. When the support body 112 is further lowered, as shown by the chain double-dashed line in FIG.
4a and 116a are the upper ends of the inner bag Z2 and pierce both sides of the cutting opening. In this state, the lowering of the support 112 is stopped. Then, the air cylinders 118 and 120
Each piston rod of is simultaneously extended. As a result, the needle members 114a and 116a are spaced apart from each other (see FIG.
4) to the position shown by the solid line). As a result, the upper end of the inner bag Z2 is opened sufficiently wide along the cut portion. In this state, the descending suction port of the powder suction tube 98 is inserted into the inner bag Z2 without interfering with the opening edge, and the powder suction action is performed. The bag opening means 1
In Fig. 10, the pair of needle members 114a and 116a pierce the bag Z2, but since the bag Z2 exists inside, foreign matter such as mud does not adhere to the surface of the bag Z2 and it is cleaner than the outside bag Z1. There is no problem because it exists.

Although one embodiment of the powder extracting device in the bag according to the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention. Alternatively, it can be modified. For example, each of the air cylinders used in the above-described embodiment is a hydraulic cylinder. Also suction pads 74 and 7
The mechanism for moving and rotating 6 is not limited to the embodiment. Needless to say, the timing of inclining the suction pads 74 and 76 is also set appropriately. Furthermore,
The means for cleaning the cut surface of the bag may be provided on the side of the clamp means. The timing of cleaning may be at the time of cutting or immediately after cutting.

[0047]

EFFECT OF THE INVENTION According to the apparatus for taking out powder in the bag constructed according to the present invention, the powder adheres to the outer surface of the bag both when the bag is cut and when the powder in the bag is taken out. It is possible to reliably prevent foreign matter from entering the powder. Therefore, the present invention is extremely useful particularly in the fields of pharmaceuticals, foods, etc., which require strict control in terms of safety and hygiene.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a powder extracting device in a bag improved according to the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a left side view of FIG.

FIG. 4 is a top view schematically showing only a part of FIG.

5 is a front view partially showing one operating mode of FIG. 1. FIG.

6 is a schematic cross-sectional view taken along the line AA of FIG.

FIG. 7 is a partial view showing another operation mode of FIG. 5;

8 is a schematic cross-sectional view taken along the line BB of FIG.

9 is a schematic cross-sectional view taken along the line CC of FIG.

FIG. 10 is a view showing a state in which the bag is waiting before the bag cutting area in FIG.

11 is a sectional view taken along the line DD of FIG.

FIG. 12 is a view showing a state in which the bag is positioned in the bag cutting area in FIG.

FIG. 13 is a partial view showing a state in which the bag is cut in FIG.

14 is a cross-sectional view taken along the line EE of FIG.

FIG. 15 is a diagram of the cutting blade in FIG. 14 viewed from the right side.

16 is a partially enlarged schematic view showing a state where cleaning is performed in the state of FIG.

FIG. 17 is an enlarged view of a part of FIG.

FIG. 18 is another operation mode diagram of FIG. 13;

19 is a diagram showing a solid state of the powder suction state shown by a chain double-dashed line in FIG. 3;

FIG. 20 is a view showing a state where the bag is sucked by a pair of suction pads.

FIG. 21 is a top view showing a support mechanism of a suction pad.

22 is a schematic view showing the positional relationship between the bag opening means and the powder suction tube shown in FIG. 23.

FIG. 23 is a view showing an embodiment of bag opening means used for a bag having two layers, and is a schematic view of FIG. 22 as seen in the direction of arrow F-F.

FIG. 24 is another operation mode diagram of FIG. 23;

[Explanation of symbols]

 2 powder removing device 10a and 12a rack 14 lower moving trolley 18 auxiliary moving trolley 20 bag pushing up means 26 supporting plate 28 upper moving trolley 32 auxiliary moving trolley 40 clamping means 42 clamping plate 50 cutting means 58 cutting blade 59 suction slit 66 moving carriage 70 bag holding means 74 and 76 suction pad 82 guide rod 84 dry bearing 90 powder suction means 98 powder suction pipe 110 bag opening means 112 supports 114 and 116 rod members 114a and 116a needle members

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Go Kajimoto 588, Kanayagawara, Kanaya-cho, Hara-gun, Shizuoka Daiichi Pharmaceutical Co., Ltd., Shizuoka Plant, Pharmaceutical Technology Center (72) Ichiro Fukui 3-38 Hongo, Bunkyo-ku, Tokyo −11 Tokuju Kosakusho Co., Ltd. (72) Inventor Tsunemi Hayashi, 632, Higashishiji Engineer Ring Co., Ltd., Numazu City, Shizuoka Prefecture (72) Inventor, Akira Kono, 632, Higashishiji Road, Numazu City, Shizuoka Prefecture, Akamu Engineer Ring Co., Ltd. (72 ) Inventor Yasuhiro Watanabe In Abumu Engineer Ring Co., Ltd. 632 Higashishiji, Numazu City, Shizuoka Prefecture

Claims (15)

[Claims] 1. Clamping means for releasably clamping the upper end portion of the bag, and cutting means for cutting and opening the upper end portion of the bag whose upper end portion is clamped by the clamp means and hung down. Bag holding means for holding the bag in a state in which the opening formed by the cutting is directed upward, and a suction port portion inserted into the bag through the opening of the bag held by the bag holding means And a powder suction means having a. 2. The powder take-out in the bag according to claim 1, further comprising cleaning means for sucking along the cutting opening of the bag when or immediately after the cutting means is cutting the upper end portion of the bag. apparatus. 3. The powder take-out device for a bag according to claim 2, wherein the cleaning means has a suction slit extending in the width direction of the bag. 4. The cutting means has a cutting blade that extends in the width direction of the bag and is cut and moved from one side surface of the bag to the other side surface thereof, and the suction slit is located behind the cutting blade. The powder extracting device for a bag according to claim 3, which extends along a cutting blade. 5. The clamping means includes two vertically spaced clamping tools, each of the clamping tools extending across substantially the entire width of the bag. 2. The powder extracting device for a bag according to claim 1, further comprising: a member; and a moving unit that moves the pair of clamp members in a direction toward and away from each other. 6. The bag holding means holds the bag in a state in which the two clamping tools of the clamping means clamp the upper end portion of the bag at intervals in the vertical direction. Powder removal device inside the bag. 7. The cutting means, in a state in which the two clamping tools of the clamping means clamp the upper end of the bag at intervals in the vertical direction and the bag holding means holds the bag. 6. The device for extracting powder from a bag according to claim 5, wherein the upper end portion of the bag is cut across the entire width in the width between the two clamping tools. 8. The bag according to claim 7, wherein after the cutting means cuts the upper end of the bag, the upper one of the two clamp tools releases the upper end of the bag. Powder extractor. 9. The upper clamp tool unclamps the upper end of the bag, and the lower clamp tool of the two clamp tools unclamps the upper end of the bag. The device for taking out powder in the bag described. 10. The apparatus for extracting powder from a bag according to claim 1, wherein the bag holding means includes a pair of suction pads which act on both surfaces of the body portion of the bag. 11. A moving means for moving the pair of suction pads in a direction of approaching and separating from each other.
The device for taking out powder in the bag described. 12. A bag opening means is arranged above the bag held by the pair of suction pads, and the bag opening means is a support body vertically movable up and down, and the support body. And a pair of rod members rotatably supported by the rod member, needle members provided at the lower ends of the rod members, and upper ends of the rod members, respectively, to rotate the rod members respectively. 11. The device for extracting powder from a bag according to claim 10, further comprising a moving means for selectively opening and closing each of the needle members to a position closer to each other and a position separated from each other. 13. The bag holding means includes tilting means for tilting the bag from an upright state that extends substantially vertically to an inclined state that extends at an acute angle to the vertical.
The device for taking out powder in the bag described. 14. A bag placing means for placing a plurality of bags in an upright state, and a bag transfer means for sequentially transferring the bags placed on the bag placing means to a bag cutting area. The clamp means is disposed in the bag transfer means, the bag transfer means clamps the upper end of the bag by the clamp means to transfer the bag, and the cutting means transfers to the bag cutting area. The powder extracting device for a bag according to claim 1, wherein the upper end of the formed bag is cut. 15. The bag holding means is movably arranged between the bag cutting area and the powder suction area, and the suction port of the powder suction means is inside the bag in the powder suction area. Inserted in the,
The device for taking out powder from a bag according to claim 14.