JP2005059922A - Loading type empty bag magazine device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a loading type magazine which continuously supplies empty bags keeping the height of the highest empty bag constant and leaving many empty bags on a bottom face plate 9 for allowing enough time for refilling by placing the plate 9 on a lifting plate 4, stacking many empty bags thereon, supplying the bags to a filling/packaging machine while lifting the same little by little, catching the bottom face plate where empty bags are left at an upper position by an engaging claw 8, lowering only the lifting plate for refilling a new bottom plate and empty bags thereon, and by supplying to the machine the empty bags left on the bottom face plate during the filling. <P>SOLUTION: An engaging claw 8 goes up and down freely by a driving motor 39 for moving the ratchet 8 up and down. While empty bags left on a bottom face plate 9 are supplied to a filling/packaging machine, the claw 8 is raised for keeping the height of the highest empty bag constant and for leaving many empty bags on the plate 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement of a stack-type empty bag magazine apparatus used for supplying empty bags to an automatic filling and packaging machine at a constant pitch.

  An elevating plate is disposed on the base plate so as to be movable up and down, and a bottom plate is placed on the elevating plate so that a large number of empty bags are stacked on the elevating plate. A front plate that defines the position of the front end (tip on the bag mouth side), a side plate that defines the positions of both edges of the empty bag are arranged on both sides, and holes are formed in both side plates, and the outer side of the hole is engaged. A stacking-type empty bag magazine device in which a pawl is arranged is known (reference: Patent Document 1 below). In this stacking-type empty bag magazine device, the engaging claw is immersed inside the side plate through the hole by an inward resilient force, and a bottom plate can be placed on the bottom plate, and When the empty bag and the bottom plate stacked on the base plate rise, they are pushed by the empty bag and the bottom plate and retreat from the inner side of the side plate against the elastic force.

When using this stackable empty bag magazine device, when the empty bags stacked on the bottom plate decrease, the elevating plate is raised intermittently, and when the bottom plate rises beyond the engaging claw, the elevating plate Is lowered. At this time, the bottom plate is left on the engaging claw, and dozens of empty bags still remain on it. While the empty bag is being supplied, the elevating plate is lowered to the lowest position, and the empty bag group newly stacked with the bottom plate is placed (replenished) on the elevating plate, and then the elevating plate And lift the plate up and down intermittently as the number of empty bags stacked again decreases. Continue to supply In addition, this empty bag is supplied to a filling packaging machine by the bag supply apparatus described in the following patent documents 2-4 etc., for example.
According to this stacking-type empty bag magazine apparatus, the supply of empty bags to the filling and packaging machine can be continued without interruption.

Japanese Utility Model Publication No. 3-40827 Japanese Examined Patent Publication No. 6-55604 Japanese Patent Publication No. 7-5125 JP 2002-173112 A

However, since the height position of the engaging claw is fixed in the stacking type empty bag magazine device, the height of the empty bag on the bottom plate left on the engaging claw (the height of the uppermost empty bag). The position) decreases as the empty bag is supplied and decreases. Therefore, there are the following problems.
As a suction device that absorbs the uppermost empty bag with a suction cup and lifts it to a predetermined position and separates it from the lower empty bag group (a part of the bag supply device), it sucks at a fixed position (the vertical stroke of the suction cup is constant) ), A large number of empty bags cannot be left on the bottom plate to be left on the engaging claws, so that there is no time for replenishing a new empty bag group. In this type of suction device, generally, when the height of the uppermost empty bag deviates by 7 mm from the specified position, a suction error starts to occur. Therefore, the thickness of the empty bag remaining on the bottom plate is expected to be safe. It is necessary to limit to 5 mm or less. This is, for example, about 25 empty bags. For example, if the bag feeding speed is 50 bags / minute, the time margin is about 30 seconds. It is necessary to newly place the bottom plate and the empty bag group, and then raise the lifting plate again.

  On the other hand, when the suction device uses a type in which the suction position follows the height position of the empty bag (the vertical stroke of the suction cup is variable), many empty bags are left on the bottom plate to be left on the engaging claw. Can be saved, and a longer time can be taken to replenish a new group of empty bags. However, if so, the stroke of the suction cups increases with the passage of time, and therefore it takes a long time (the time required for one stroke) to adsorb the empty bag and lift it to a predetermined position. Then, the time required for one stroke of the suction device is matched with the operation timing of other members of the bag feeding device (for example, the second swinging suction arm in the case of Patent Document 2), based on the longest expected time. Since it is necessary, the bag feeding speed of the bag feeding device cannot be increased.

Further, in the stackable empty bag magazine apparatus, the front plate can be moved in the front-rear direction, and can be positioned at an appropriate position with a bolt or the like. For this positioning, when a bag feeder and a load-type empty bag magazine device are newly installed near the filling and packaging machine, the sucking position of the bag by the suction cup (how many millimeters from the front end of the empty bag are sucked) is set. After the positioning is performed, it is usually unnecessary to change the position of the front plate even if the bag size or the like changes.
However, depending on the type of bag, the actual suction position may deviate from the set suction position (that is, the target suction position). Specifically, when the height of the empty bag group stacked on the bottom plate is high (the number of empty bags is large), the upper surface of the empty bag group may be inclined in the front-rear direction with respect to the bottom plate. However, if this inclination increases, the actual suction position is set behind the suction position (the suction position set as having no inclination) (the bottom of the bag), even if the positional relationship between the front plate and the suction cup of the suction device does not change. Side). This deviation amount is (1 / cos θ−1) × t by simple calculation, where θ is the inclination angle and t is the distance between the set suction position and the front end of the bag. This deviation also affects the gripping position (how many millimeters are gripped from the top of the bag mouth to the bottom) of the gripper of the filling and packaging machine (gripping the side edges of the bag with the bag mouth facing up). The actual gripping position due to is shifted to the bag bottom side from the set gripping position. Even in such a case, the width of the heat plate (vertical width) of the sealing device is increased more than necessary so that the bag mouth can be completely sealed to the upper end of the bag mouth, resulting in an increase in electrical energy costs. ing.
In addition, when the height of the empty bag group placed on the bottom plate is high, the height of the empty bag group is low even if the top surface is greatly inclined in the front-rear direction with respect to the bottom plate (the number is And the inclination becomes smaller, and the difference between the actual suction position and the set suction position becomes smaller. Since the height of the empty bag group on the bottom plate fluctuates during the operation of the loadable empty bag magazine device, eventually, packaged products having different seal widths are manufactured by the filling and packaging machine.

The present invention has been made in view of the problems of such a conventional stack-type empty bag magazine device. The uppermost empty bag is adsorbed by a suction cup, lifted to a predetermined position, and separated from the lower empty bag group. When using a suction device that sucks at a fixed position (up and down stroke of the suction cup is constant), many empty bags can be left on the bottom plate to be left on the engaging claw. The first purpose is to allow time for replenishing empty bag groups.
It is another object of the present invention to always be able to suck a target suction position even when using an empty bag that largely tilts back and forth with respect to the bottom plate when many are stacked.

  In the stackable empty bag magazine device according to the present invention, an elevating plate is disposed on a base plate so as to be movable up and down, a driving device for elevating the elevating plate is provided, and a bottom plate is detachably mounted on the elevating plate. A plurality of empty bags stacked on top of each other, a front plate defining the front end position of the empty bag on the front side of the bottom plate, and side plates defining both edge positions of the empty bag on both sides. A hole is formed in each side plate, and an engaging claw is disposed outside the hole, and the engaging claw passes through the hole by an inward elastic force and is located inside the side plate. The bottom plate can be placed at that time, and when the elevating plate rises and the empty bag stacked on the bottom plate and the bottom plate rise, the empty bag and the bottom plate In the stackable empty bag magazine device which is pushed by a seat and is retracted from the inside of the side plate against the elastic force, the engagement claw can be moved up and down, and the engagement claw There is provided a drive device that simultaneously moves up and down. The hole portion is, for example, a long hole that is long in the vertical direction, and the engagement claw can be moved up and down along the long hole. In the present invention, the front indicates the side of the bag facing the bag mouth, and the rear indicates the bag bottom side.

  In the stackable empty bag magazine apparatus, the driving device is controlled so as to raise and lower the elevating plate and the engaging claw so as to keep the height of the uppermost empty bag on the bottom plate substantially constant. Such a control is possible because the engaging claw is not fixed in the height direction and can be moved up and down by the driving device. In that case, for example, a detecting means for detecting the height of the empty bag at the highest position among the stacked empty bags on the bottom plate is provided, and the drive device is controlled based on the detection signal of the detecting means. Control.

  In the loadable empty bag magazine device, preferably, the front plate is supported so as to be movable in the front-rear direction on the base plate, an operation handle for moving the front plate, and rotation of the operation handle is transmitted to the front plate. A transmission mechanism is provided. As a result, the positioning of the front plate is facilitated, and at the same time, the position of the front plate can be adjusted even when the stacking empty bag magazine apparatus is in operation. Therefore, when using empty bags that tilt forward and backward with respect to the bottom plate when many are stacked, for example, when the height of the empty bag group is high, shift to the rear side from the original set position, By returning to the initial set position when the height is lowered, the difference between the actual suction position and the set suction position can be reduced.

The concept of enabling the position adjustment of the front plate by the operation handle and the transmission mechanism is not limited to the specific stacking empty bag magazine device, but other stacking empty bag magazine devices, for example, the height of the engaging claw. The present invention can also be applied to a conventional stack-type empty bag magazine apparatus whose position is fixed.
Further, a large number of empty bags are stacked on a bottom plate that can be moved up and down, a front plate that defines the front end position of the empty bag on the front side of the bottom plate, and a side plate that defines both edge positions of the empty bag on both sides. The present invention can be applied to an installed stack type empty bag magazine device. The bottom plate here is not only a plate that is detachably mounted on the lifting plate like the bottom plate of the specific stackable empty bag magazine device, but can also be raised and lowered by itself (the bottom plate). Including a device capable of stacking empty bags. In any case, the front plate is supported so as to be movable in the front-rear direction, and an operation handle for moving the front plate and a transmission mechanism for transmitting the rotation of the operation handle to the front plate are provided.

According to the present invention, in the stack-type empty bag magazine device, the bottom plate is left on the engaging claw by providing the driving device capable of moving the engaging claw up and down and simultaneously moving the engaging claw up and down simultaneously. Even if a large number of empty bags remain, it is possible to control the height of the uppermost empty bag on the bottom plate by raising and lowering the engagement claw so that it can be controlled. A sufficient time can be taken for replenishing the empty bag group.
On the other hand, in a stack-type empty bag magazine apparatus, a large number of stacks are provided by providing an operation handle for moving the front plate in the front-rear direction and a transmission mechanism for transmitting the rotation of the operation handle to the front plate. Even when using an empty bag that tilts back and forth with respect to the bottom plate, the position of the front plate can be adjusted (this is possible even when the load-type empty bag magazine device is in operation), making it easy to target The position can be picked up. As a result, fluctuations in the gripper gripping position are reduced, and it is not necessary to set the width of the heat plate of the sealing device larger than necessary.

Hereinafter, the stacking-type empty bag magazine apparatus according to the present invention will be specifically described with reference to FIGS. This loading-type empty bag magazine apparatus is a W-type (a system that handles two bags at the same time is called a W-type), and is a filling and packaging machine (for example, a W-type intermittent rotary table type filling described in JP-A-2002-36392). (See packaging machine).
As shown in FIG. 1 to FIG. 3, this stacking type empty bag magazine device is installed on a box-type frame 2 fixed to the side surface of the machine base 1 of the filling and packaging machine, and faces downward toward the front of the box-type frame 2. A base plate 3 that is fixed in close contact with the top surface inclined to the base plate 3, a lift plate 4 that can be moved up and down arranged on the base plate 3, a front plate 5 that can be adjusted in position on the base plate 3, and left and right side plates 6. , 7, engaging claws 8 (two for each side plate) disposed on the outside of the left and right side plates 6, 7, and detachable mounted on the elevating plate 4 and the engaging claws 8. A free bottom plate 9 is provided. The elevating plate 4, the front plate 5 surrounding the periphery thereof, and the left and right side plates 6, 7 are installed in two sets on the left and right because this stacking type empty bag magazine device is W-type.

  As shown in FIGS. 1 and 2, the elevating plate 4 is a plate arranged in parallel on the base plate 3, and the elevating shaft 11 is vertically fixed at the center of the lower surface. The elevating shaft 11 is a kind of rack that extends downward through holes formed in the base plate 3 and the box-type frame 2 and is rotated by a drive motor 13 fixed to the lower surface of the base plate 3 via a mounting block 12 (see FIG. (Not shown). Therefore, when the drive motor 13 rotates, the elevating shaft 11 is raised and lowered by the rack and pinion mechanism, and thereby the elevating plate 4 is raised and lowered. In this example, the two lift plates 4 and 4 are lifted and lowered by separate drive motors. A bottom plate 9 is placed on the elevating plate 4, and a number of empty bags (empty bag groups) are stacked thereon.

As shown in FIGS. 1 and 3, the front plate 5 is a plate arranged vertically on the base plate 3, and the lower ends of the two front plates 5 are fixed to a common support member 14. The support member 14 is fixed to a pair of slide members 15, and each slide member 15 is slidable along a slide rail 16 fixed to the upper surface of the base plate 3 in parallel in the front-rear direction. Further, an adjustment piece 17 is fixed at the center of the support member 14 and extends below the base plate 3 and the box-type frame 2. A female screw is formed at the lower end of the adjustment piece 17, and a male screw formed at the tip of the adjustment shaft 18 installed in the front-rear direction along the box frame 2 is screwed into the female screw. The vicinity of the rear end of the adjustment shaft 18 protrudes out of the box frame 2 and is rotatably supported by a bearing 19 fixed to the box frame 2 (movement in the axial direction is restricted). The adjustment handle 21 is fixed. Therefore, by rotating the adjustment handle 21, the front-rear direction position of the left and right front plates 5 can be adjusted at any time. The support member 14, the slide member 15, the slide rail 16, the adjustment piece 17, and the adjustment shaft 18 correspond to the transmission mechanism referred to in the present invention.
In this stacking type magazine apparatus, since the elevating plate 4 and the bottom plate 9 are inclined forward and downward, the front end of the empty bag placed on the bottom plate 9 contacts the front plate 5. That is, the front plate 5 defines the front end position of the empty bag on the bag mouth side. Therefore, by adjusting the front-rear direction position of the front plate 5, the suction position of the bag by the suction cup (how many millimeters from the front end of the empty bag) Can be adjusted).

As shown in FIG. 1, the side plates 6 and 7 are plates that are arranged vertically on the base plate 3 and parallel to the front-rear direction, and a support plate 22 is fixed to the outer surface on the lower rear side. The support plate 22 is fixed to a slide member 23, and the slide member 23 is slidable along a slide rail 24 fixed to the upper surface of the base plate 3 in the front-rear direction. Further, an adjustment nut 25 formed with a female screw is fixed to the support plate 22, and a male screw of the adjustment shaft 26 is screwed there. Although not shown in FIG. 1 for the side plate 7, a support plate, a slide member, a slide rail, and an adjustment nut are arranged in the same relationship as in the case of the side plate 6. Are screwed together. However, the female screw of the adjustment nut 25 and the female screw of the adjustment nut on the side plate 7 side are formed in opposite directions, and the male screw of the adjustment shaft 26 that is screwed to them is also formed in the opposite direction on the side plate 6 side and the side plate 7 side. Has been. Accordingly, when a handle (not shown) fixed to one end of the adjusting shaft 26 is rotated, the side plates 6 and 7 are moved closer to or away from each other, and thus the space between the side plates 6 and 7 is used. It can be adjusted according to the width of the bag. The adjusting mechanism for the side plates 6 and 7 is substantially the same as that described in Patent Document 1.
A bearing 27 is fixed to the lower front side of the side plate 6, and the bearing 27 is slidably fitted on a guide shaft 28 fixed on the base plate 3. Although not shown in FIG. 1 for the side plate 7, a bearing is fixed similarly to the side plate 6, and the bearing is slidably fitted to the guide shaft 28. This mechanism guides the side plates 6 and 7 as they approach or separate from each other.

On the other hand, as shown in FIGS. 1 and 2, a pair of long holes 29 and 29 are formed in the upper portions of the side plates 6 and 7, respectively, and the engaging claws 8 are arranged on the outer sides thereof. Each engaging claw 8 is fixed to the upper part of the leaf spring 31, and the lower part of each leaf spring 31 is fixed to a common lifting arm 32 (side plate 6 side) and 33 (side plate 7 side). The elevating arms 32 and 33 are guided by a guide plate 34 fixed to the outer surface of the side plates 6 and 7, and can be raised and lowered in the vertical direction with respect to the elevating plate 4 along the outer surfaces of the side plates 6 and 7.
A horizontal shaft 35 that passes through the long hole 30 formed in the side plates 6 and 7 is slidably fitted in holes formed in the lower ends of the lifting arms 32 and 33, and a lifting block 36 is provided at the center of the horizontal shaft 35. A lifting shaft 37 is fixed to the lifting block 36. The elevating shaft 37 is a kind of rack and extends downward in parallel with the elevating shaft 11 through holes formed in the base plate 3 and the box type frame 2, and is fixed to the lower surface of the base plate 3 via a mounting block 38. Meshes with a rotating pinion (not shown).

  The engaging claw 8 has a top portion of the head portion 8a that is substantially horizontal, an inner side surface 8b thereof inclined inward, and the head portion 8a passes through the long hole 29 by the inward elastic force of the leaf spring 31. , 7 and the bottom plate 9 can be placed on the head 8a (the bottom plate 9 is supported by the four engaging claws 8). Further, when the empty bag and the bottom plate 9 stacked on the bottom plate 9 rise from the bottom, the engaging claw 8 is pushed by this, and resists the elastic force of the leaf spring 31 to the side plate. Retreat from the inside of 6,7. When the drive motor 39 rotates, the elevating shaft 37 is raised and lowered by the rack and pinion mechanism, whereby the engaging claw 8 is raised and lowered along the long hole 29.

  This load-type empty bag magazine apparatus further includes a detection sensor 41 for detecting the height of the uppermost empty bag, and a detection sensor for detecting the position of the engaging claw 8 (immersed or retracted inside the side plates 6 and 7). 42 and the signals of the detection sensors 41 and 42, the drive motors 13 and 39 are driven to raise and lower the elevating plate 4 and the engaging claws 8, and the height of the uppermost empty bag on the bottom plate 9. Is provided with a control device 43 for controlling so as to be kept substantially constant.

4 and 5 show the operation of this stacking type empty bag magazine apparatus in order (W type, but only one side is shown for simplicity).
FIG. 4 (a) shows a state before the operation, in which the elevating plate 4 and the engaging claw 8 are both at the lower end position, the bottom plate 9 is placed on the elevating plate 4, and the empty bag with the maximum load capacity is placed on it. The group S1 is placed, and the engaging claw 8 is pushed by the empty bag group S1 and is in the retracted position. The height of the uppermost empty bag W1 is exactly at the suction position (the lower end position of the stroke of the suction cup 44) of the suction cup 44 of the suction device.
From this state, when the bag feeder (the adsorber is a part of the bag feeder) picks up and removes empty bags one by one from the left and right from this stack-type empty bag magazine device and starts supplying them to the filling and packaging machine The drive motor 13 rotates based on the signal from the sensor 41, and the elevating plate 4 is raised in accordance with the supply amount (decrease amount) of the empty bag so that the height of the uppermost empty bag W1 is always constant. To do.

When the elevating plate 4 is raised to the upper end position, the bottom plate 9 just passes over the engaging claw 8, and the engaging claw 8 has its head 8a immersed inside the side plates 6 and 7 by the elastic force of the leaf spring 31. Then, the bottom plate 9 is locked by the upper top portion of the head portion 8a. At this time, a part Sr of the empty bag group remains on the bottom plate 9. At the same time, the detection sensor 42 detects that the engaging claw 8 is immersed inside the side plates 6 and 7, whereby the control target of the control device 43 is switched to the drive motor 39, and this time the signal of the detection sensor 41 is changed. Based on this, the drive motor 39 rotates to raise the engagement claw 8 according to the supply amount (decrease amount) of the empty bag, and control the height of the uppermost empty bag W1 to be always constant.
During this time, as shown in FIG. 4B, the drive motor 13 is rotated to lower the elevating plate 4 toward the lower end position, and then the elevating plate stopped at the lower end position as shown in FIG. 5A. After the new bottom plate 9 (indicated by 9a) and the empty bag group S2 are placed on the rear side, the lift plate 4 is raised again. These operations are manually performed by an operator.

Next, when the elevating plate 4 is raised and the upper end of the empty bag group S2 reaches the position of the bottom plate 9 on the engagement claw 8, the engagement claw 8 is empty as shown in FIG. It is pushed by the bag group S2 and retracts from the inside of the side plates 6 and 7. At the same time, the detection sensor 42 detects that the engaging claw 8 has been retracted, whereby the control target of the control device 43 is switched to the drive motor 13. Thereafter, the drive motor 13 rotates in a controlled manner based on the signal from the detection sensor 41 to raise the elevating plate 4 according to the supply amount (decrease amount) of the empty bag, and the height of the uppermost empty bag W1. Is controlled to be always constant.
During this time, the bottom plate 9 is extracted, the drive motor 39 is rotated, and the engagement claw 8 is lowered to the lower end position. These operations are manually performed by an operator.

  Assuming that the suction position of the bag by the suction cup 44 is such that the upper surfaces of the empty bag groups S1, S2, etc. placed on the bottom plate 9 are not inclined with respect to the bottom plate 9 (that is, empty bags that are not inclined) are used. If it is set, as described above, when using empty bags that incline when stacked, the inclination becomes even greater, especially when the stacked height is high, and the actual suction position is set. It will deviate from the suction position. In order to prevent this, for example, when the height of the empty bag group is high as shown in FIG. 4A, the adjustment handle 21 is turned to move the front plate 5 slightly backward (for example, several mm). When the height of the empty bag group is lowered, it may be restored. This operation can be performed without stopping the supply of empty bags.

1 is an overall side view (partially cross-sectional view) of a stackable magazine apparatus according to the present invention. It is the whole front sectional drawing (however, the cross-sectional positions on the left and right are different). It is a back surface sectional view of a front plate part. It is explanatory drawing of the action | operation of a loading type magazine apparatus. It is explanatory drawing (continuation) of operation | movement of a stacking-type magazine apparatus.

Explanation of symbols

3 Base plate 4 Elevating plate 5 Front plate 6, 7 Side plate 8 Engaging claw 9, 9a Bottom plate 11, 37 Elevating shaft 13, 39 Drive motor 18 Adjusting shaft 21 Adjusting handle 29 Long hole 31 Plate spring 32, 33 Elevating arm 41 , 42 Detection sensor 44 Suction cup of the suction device W1 Topmost empty bag S1, S2 Empty bag group Sr Empty bag group left on the bottom plate

Claims (4)

An elevating plate is arranged on the base plate so as to be movable up and down, and a driving device for elevating the elevating plate is provided. A bottom plate is detachably mounted on the elevating plate, and a large number of empty bags are stacked thereon. A front plate that defines the front end position of the empty bag on the front side of the bottom plate, and side plates that define both edge positions of the empty bag on both sides, and a hole is formed in the both side plates. An engaging claw is disposed outside the hole, and the engaging claw is inserted into the side plate through the hole by an inward elastic force, and the bottom plate can be placed at that time. And when the elevating plate is lifted and the empty bag stacked on the bottom plate and the bottom plate are raised, the side is pushed against the elastic force by being pushed by the empty bag and the bottom plate. In the stack-type empty bag magazine apparatus configured to be retracted from the inside of the plate, the engagement claw can be moved up and down, and a drive device that moves the engagement claw up and down simultaneously is provided. Loading type empty bag magazine device. A detecting means for detecting the height of the empty bag in the uppermost position among the stacked empty bags, and the height of the uppermost empty bag is kept constant based on the detection signal of the detecting means. The stacking type empty bag magazine apparatus according to claim 1, further comprising a control device that controls raising and lowering of the elevating plate and the engaging claw. The front plate is supported on the base plate so as to be movable in the front-rear direction, and an operation handle for moving the front plate and a transmission mechanism for transmitting the rotation of the operation handle to the front plate are provided. The stacking-type empty bag magazine apparatus according to claim 1 or 2. A large number of empty bags are stacked on a bottom plate that can be moved up and down, a front plate that defines the front end position of the empty bag on the front side of the bottom plate, and a side plate that defines the positions of both edges of the empty bag on both sides. In the stacked empty bag magazine apparatus, the front plate is supported so as to be movable in the front-rear direction, an operation handle for moving the front plate, and a transmission mechanism for transmitting the rotation of the operation handle to the front plate are provided. A loading-type empty bag magazine device characterized by that.

Images