JP2004035185A - Cut bag conveying device of rotary type powder agent filling and packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut bag conveying device, which holds a bag ranging from its front portion to its rear portion where the bag is separated from the next bags adjacent to each other and is used for a powder agent filling and packaging machine which fills bag sections made by forming many width sealing sections from a long film folded in half with a specified quantity of powder agents and cut them at width sealing sections. <P>SOLUTION: The cut bag conveying device includes a pair of peripherally circulating means which laterally advance in parallel with each other from the upperstream side to the downstream side of a cutting device, a gripping means which are attached to the peripherally circulating means separatedly from each other and an include a gripper for holding the upper end section of a bag, and drive motors for driving the chains of a pair of the peripherally circulating means so that the relative speed of each of a pair of the peripherally circulating means can be changed. In the cut bag conveying device, making a pair of grippers by one or two or more grippers, many pairs of grippers of a periphery circulating means and many pairs of grippers of the other periphery circulating means are arranged alternatively in the longitudinal direction of each periphery circulating means. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a number of width seal portions are formed from a long film folded in half, a bag portion is filled with a predetermined amount of powder, and each bag portion is sealed with an upper edge heat seal portion and cut at the width seal portion. The present invention relates to a cutting bag transport device used for a continuous automatic powder packaging machine for holding and transporting bags before and after separation.
[0002]
[Prior art]
The continuous automatic powder packaging machine forms a large number of bags continuously on a long thermoplastic resin film, fills each bag with a predetermined amount of powder, and seals each bag with a heat seal. The film of bag connection manufactured by this is cut at each width seal portion, separated into bags, and supplied as bag-containing dust. Also, depending on the application, the separated bags may have two or more bags still connected through perforations.
[0003]
FIG. 10 shows an outline of a dust filling and packaging machine as a horizontal rotary type machine. This machine continuously unwinds a long film 90 wound in a coil shape and continuously folds it into a U-shaped trough shape. It is transferred to the sealing filling device 1. In the sealing and filling apparatus 1, a large number of chutes 3 and a pair of sealing bars 2 are rotated on a turntable. And the film between the adjacent chutes 3, 3 is sandwiched by the sealing bar 2 from both sides and is held around the turntable while moving around the turntable. They are formed at regular intervals in the longitudinal direction. The inside of the double film divided by a number of width seal portions becomes a bag portion, and a number of bag portions 92 are formed continuously in the longitudinal direction. From the next dust supply device, a fixed amount of dust is cut out into a chute from the next dust supply device, and is filled in each bag.
[0004]
The film 90 in which the powder material is loaded in each bag portion is separated from the turntable while being continuously transferred, and is continuously moved by the upper edge sealing device 83 as shown in FIG. Is heat-sealed to form a heat-sealed upper edge, and the dust is sealed inside the bag 92. Further, while the film in which the bag portions 92 are connected in this manner is transported almost straight, the cutting device 84 cuts the substantially central portion of the width seal portion 91, and the bag portions 92 are separated to remove the powder. It becomes a packaged bag.
[0005]
[Problems to be solved by the invention]
FIG. 11 shows an example of a conventional cutting bag holding device. When the cutting device 84 cuts the film 90 at the width seal portion 91, the cutting device 84 is used to hold and transport the cut bag portion. A number of clippers 50 having grips for gripping the upper edge 94 of the portion 92 are made to orbit by the orbiting means 6 such as the chain 6 which moves in parallel to the direction of movement of the bag 92 passing through the cutting device 84. I was Each bag portion 92 cut and separated by the cutting device 84 moves while being suspended by each clipper 50 of the chain 6, and at a predetermined position, releases the gripper of the clipper 50 and puts the bag into a collection chute. Dropped and collected.
[0006]
In such a cutting bag holding device, the moving speed of the chain 6 or the clipper 50 of the circling means is almost equal to the moving speed of the film 90 sent from the sealing end point device to the cutting device and passing therethrough. The rotary drive shaft of the drive sprocket is mechanically linked with a drive device on the main body side of the powder filling and packaging machine that determines the movement of the film.
[0007]
However, if the bag pitch (i.e., the width of the bag) is to be changed on the side of the sealing and filling device, as the bag pitch is increased or decreased, the cutting bag holding device will be next to each other along the chain. The pitch between the matching clippers 50, 50 also needed to be changed to match the bag pitch. For this purpose, it is necessary to re-attach a series of clippers 50 to the chain 6, and when the transfer speed of the bag portion or the film is also changed, the moving speed of the chain is also changed in the cutting bag holding device. Work was needed.
[0008]
Furthermore, the bag pitch can be changed by increasing or decreasing the number of sealing bars and chutes around the rotary drum in the sealing filling device. This makes it possible to adjust the bag pitch in a very short time for the sealing and filling device. However, in the conventional cutting bag holding device, the time and labor required for the above-described operation are reduced. Is rather long as a whole, and the time required to suspend production is long, which is not preferable.
[0009]
In view of such circumstances, the present invention provides a cutting bag holding device capable of securely holding and conveying each bag without changing the interval of the clippers with respect to an arbitrarily changed bag pitch.
[0010]
The present invention further provides a cutting bag holding device capable of variably adjusting the moving speed of the clipper in accordance with the moving speed of the bag or the film.
[0011]
[Means for Solving the Problems]
In the cutting bag holding device of the present invention, the orbiting means are arranged in two rows along the moving direction of the bag, and each of the orbiting means has a clipper for holding the upper edge of each bag as a clip means. Each clipper fixed at an interval and arranged on one of the circling means is arranged alternately with each clipper of the other circulating means, and the movement of one and the other circulating means is variably adjustable separately. is there.
[0012]
In this arrangement of the circling means and the clippers, the alternately arranged clippers sequentially grip at least the upper edge of the bag at least immediately before passing through the cutting device and the bag behind the bag, and cut the bag cut through the cutting device. Is further transported forward, and the movement of the clipper of one of the orbiting means and the clipper of another orbiting means immediately thereafter are separately controlled, so that the separated bag can be quickly transported forward. .
[0013]
Therefore, two adjacent bags until the width seal portion passes through the cutting device are gripped independently by two adjacent clippers of different orbiting means, corresponding to the pitch between the bags, and interlocked at a constant speed. The bags that have been moved and cut through the cutting device can be moved separately by rapidly moving the orbiting means of the clipper holding the bags as they are. The bag left uncut by the cutting device is kept as it is by the rear clipper and moves at a constant speed, but the clipper next to the above-mentioned rapidly moving orbiting means quickly comes close to the above-mentioned uncut portion. Hold and grasp the bag connected to the back of the bag. In this way, before and after the bag passes through the cutting device, two adjacent clippers from different circling means hold and hold the two adjacent bags to cut accurately, and after cutting, the separated bag is removed. The clipper can be quickly advanced and transported.
[0014]
Adjacent bags can be reliably gripped by adjacent clippers of different circling means, and the distance between adjacent clippers, that is, the pitch of the clippers, can be adjusted by adjusting the relative position of the two circulating means by independent drive motors. Therefore, even if the bag pitch is changed, it is only necessary to reset the distance between the adjacent clippers at the time of constant speed movement, and the work of reattaching the clipper is not required.
[0015]
Such setting of the distance and the timing of the rapid movement can be performed very easily by electronically controlling the relative speed of the orbiting means via a control device using a servo mechanism, and the bag pitch Modification work can be simplified.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
In the bag conveying device of the present invention, the orbiting means is provided in a pair so as to orbit from the upstream side to the downstream side of the cutting device so as to be able to pass therethrough and to be translated in the horizontal direction, and each is attached at equal intervals. Clip means including a clipper for gripping the upper edge of the bag, and a drive motor for driving each of the circulating means so as to variably change the relative speed of the pair of circulating means, wherein the clip means is one of the one circulating means. Alternatively, with two or more clippers as one set, a large number of sets of clippers are alternately arranged in the longitudinal direction of the chain with the same number of sets of clippers of the other circling means.
[0017]
In the present invention, the circling means includes a belt or a chain, and any other circulating means can be used as long as a large number of clippers can be fixed at intervals and can be conveyed.
[0018]
The pair of orbiting means are arranged so as to be able to translate, and are preferably arranged up and down. The orbiting means can be stretched between sprockets arranged between the upstream side and the downstream side of the cutting device for cutting the width seal portion. The circling means is arranged so as to move in the lateral direction, but in consideration of the swelling of the lower part of the bag filled with the powder, the circulating means is arranged so as to be slightly inclined downward to the downstream side. This is convenient because it prevents bending on the edge side.
[0019]
It is preferable that the drive motor of the circulating means is a servo motor. In this case, a servomotor is connected to each sprocket on the drive side of the pair of orbiting means, and each servomotor moves the corresponding orbiting means and adjusts the relative speed of the pair of orbiting means.
[0020]
The clipping means includes a clipper that grips and transports the upper edge of the bag with the lower gripping part, and the clipping means is a set of one or two or more clippers for each of the pair of circling means. Are attached at predetermined intervals for each set. And each set of clippers of one circling means is arranged so as to be located between two adjacent sets of clippers of the other circulating means. Therefore, one set of clippers of one circulating means can relatively move in the longitudinal direction of the circulating means within a space between two sets of clippers adjacent to the other circulating means. This relative movement can be performed during the rotation of the pair of rotation means. By adjusting the relative speed of the pair of circling means by the above servomotor, the interval between the adjacent clippers can be appropriately changed, so that even if the bag pitch is changed, each clip means can be connected to each bag. Can be reliably held.
[0021]
For clippers arranged along a pair of circling means, the maximum value of the pitch of adjacent sets is equal to or greater than the maximum available bag pitch. Therefore, the pitch of each set of clippers attached to one clip means is at least twice the maximum value of the pitch of each set of clippers arranged along the pair of circling means. Thus, once the pitch of the set of clippers is set on the circling means, even if the bag pitch is changed during operation, it is necessary to change the clipper to the circulating means within the maximum bag pitch range. Rather, there is an advantage that the pitch between clippers can be freely changed and controlled by exclusively controlling the relative movement by the servomotor.
[0022]
If one set of clippers includes two or more clippers, the two or more clippers can simultaneously hold the same number of bags at the same time. One set of clippers can hold and transport two or more bags connected to the width seal portion.
[0023]
The distance between adjacent clippers in one set arranged along a pair of circling means can be determined substantially depending on the sum of the bag pitches held in each set. If two or more clippers in a set can hold the same number of connected bags simultaneously, the spacing between adjacent clippers in the same set does not need to be strictly determined.
[0024]
In the present invention, the cutting device may be any device that cuts the width seal portion between the clippers while passing the clippers holding the upper edge of the connected bag portions. The cutting device may be provided with a perforation blade for perforating as well as cutting.
[0025]
As an example of the cutting device, a pair of rotary blades can be used, and in this case, the above-described circling means is such that each clipper passes between the pair of rotary blades while holding the upper edge of the bag. It is preferable that the blade moves above the rotary blade and the cutting blades of the rotary blade cut the width seal portion between the bags. As another cutting device, a device including a rotary blade or a fixed blade, and a moving blade that moves back and forth with a cutting edge corresponding to these cutting blades can be adopted.
[0026]
The above-described cutting bag conveying device can be suitably applied particularly to a dust filling and packaging machine capable of easily changing the bag pitch. Such a powder filling and packaging machine includes a rotary drum provided on a base so as to be rotatable horizontally, a number of sealing bars arranged on the outer periphery of the rotary drum, and a chute arranged between the sealing bars. There is a horizontal rotary-type powder-filling and packaging machine which can be replaced with a desired number of sealing bars and chutes to change and adjust each bag pitch.
[0027]
【Example】
In this embodiment, an example is shown in which a chain arranged vertically in two stages is used for the circling means 6. In FIG. 1, the two chains 6a and 6b are respectively driven sprockets 61a and 61b on the upstream side of the cutting device 84 and the driving sprockets 61a and 61b on the downstream side of the cutting device 84 along the moving flow of the film 90. It translates and circulates between the sprockets 62a and 62b.
[0028]
In FIG. 1, the driven sprockets 61a and 61b of the pair of upper and lower chains 6a and 6b can freely rotate on a common shaft 610 between the upper edge sealing device 83 and the cutting device 84 for cutting the width seal portion. Is provided.
[0029]
The other drive sprockets 62a, 62b are arranged downstream of the cutting device 84 and are directly connected to servo motors as drive motors Ma, Mb, respectively, and the respective chains 6a, 6b are respectively connected to the servo motors via sprockets. And speed control is performed respectively.
[0030]
FIG. 9 shows the arrangement of each chain 6a, 6b circulating between these driven and driven sprockets. Each chain is guided by a suitable guide sprocket 65 or the like, and the front side of the apparatus has an advancing bag. The device travels substantially straight along the direction toward the downstream side, and on the rear side of the device, while being reversely moved, is appropriately tensioned by the tensioning sprocket.
[0031]
In this example, as shown in FIGS. 8 and 9, the cutting machine 84 uses a pair of rotary blades 84a and 84b, and each rotary blade is substantially perpendicular or slightly inclined in four directions. Each of the chains 6a and 6b provided with 841 and 841 and passing the front side of the apparatus passes above each rotary blade body. Downstream of the cutter, one or more bag collecting chutes are arranged directly below the chain.
[0032]
1 to 6, a clip means 5 (5a, 5b) is attached to each of a pair of upper and lower chains, and the clip means 5 includes a plurality of one or two or more clippers 50 as a set. A set of clippers is attached to each chain at regular intervals.
[0033]
FIG. 1 and, more specifically, FIG. 3A shows the arrangement of clippers 5a and 5b attached to the upper and lower chains 6a and 6b as the clip means 5. In this example, one clipper 50a, A set of 50b is arranged such that the clipper 50a to which the upper chain 6a is attached is located between two adjacent clippers 50b, 50b attached to the lower chain 6b. The upper and lower clippers 50a and 50b have grips at lower ends thereof at substantially the same level, and the grippers 56 and 57 can pinch and hold the upper edge 94 of the bag 92.
[0034]
2A shows a clipper 50a to be fixed to the upper chain 6a, and FIG. 2B shows a clipper 50a to be fixed to the lower chain 6b. Fixed clip 510a fixed to the lower chain or a short fixed piece 510b fixed to the lower chain. Each clipper has a fixed gripping piece 51 having a gripping portion 57 at the tip of the fixed piece 510a, 510b. And a movable gripping piece 52 having a gripping portion 56 pivotally attached to the fixed gripping piece 51 to perform opening / closing operations and moving close to and away from the gripping portion 57 of the fixed gripping tool. The grippers 56, 57 of the clipper of the upper chain are at substantially the same level as the grippers 56, 57 of the clip means fixed to the lower chain.
[0035]
The fixed part 51 and the movable part 52 of the clipper are provided with a spring or a magnet (both not shown) between them, and are normally in a closed state, and the bag is gripped by the closed grip. On the other hand, a cam piece 53 is provided on the movable part so as to protrude from the movable part 52, and when the pressing members 71, 69 arranged along the chains 6a, 6b press the cam piece 53, the movable part is movable. The piece 52 is opened with respect to the fixed piece 51, and the opened grip can be used to newly grip the bag, release the held bag, and control the bag. Such a holding member is formed as a cylindrical holding member 69 directly below the driven sprocket, and is used when newly holding a bag, and is provided as pressing plates 71 and 72 immediately above the bag collecting chute. Then, the cam piece of the clipper comes into contact with the holding portion plate, and the bag is dropped on the collecting chutes 78 and 79.
[0036]
Regarding the operation of such a cutting bag conveying device, when the upper and lower chains rotate the driven sprocket 61a and move to the linear movement between the upper edge sealing device 83 and the rotary blade cutting device 84, each clipper: The central portion of the upper edge 94 of the bag 92 is gripped. Next, with the movement of the chains 6a, 6b, the clippers 5a, 5b, with the bag portion 92 connected to the long film 90 suspended, as shown in FIG. A rotary blade cuts the width seal portion 91 immediately after passing through between the cutting blades 841, 841, which are cross blades, or a perforation is made in the width seal portion 91.
[0037]
In this case, since the pair of rotary blades of the rotary blade cutting device form a cross blade, the width seal portion 91 of the film 90 is cut at a position where the rotary blades 841 and 841 face each other every 回 転 rotation. The rotation of the rotary blade and the movement of each clipper are synchronized so that the clippers 5 pass when the spaces of the cross blades adjacent to each other match.
[0038]
Each bag 92 cut by the cutting device 84 is moved downstream while being suspended while being held by the grippers 56 and 57 of the clipper, and is pressed at the position immediately above the collection chutes 78 and 79. The cam piece 53 of the movable part provided on the clipper is pushed out by the plate 71 or 72, the gripping parts 56 and 57 are opened, and the bag 92 is dropped on the collecting chute 78 or 79 corresponding to the activated pressing plate. .
[0039]
3 to 5 show the arrangement and operation of the pair of upper and lower chains 6a and 6b and the clippers 5 attached to the respective chains 6a and 6b. In FIG. 3A, an upper chain 6a and a lower chain 6b are arranged so as to be able to circulate in parallel, and each chain is constituted by one set of one clipper 5, and an upper chain The clippers 50a of each set 6a are alternately arranged linearly with the clippers 50b of each set of the lower chain 6b.
[0040]
3 to 5, the vertical chain line in the drawings indicates a cutting line Z at a position where the rotary blade can be engaged and cut. In FIG. 3A, the clipper 50a (501a) of the upper chain 6a is shown. ) Holds the already separated bag 92-1. The clipper 50b (501b) of the lower chain 6b holds the leading bag 92-2 before separation, and the upstream side of the upper chain 6a The clipper 50a (502a) is moving at a constant speed to the downstream side while holding the bag 92-3 at the rear thereof while being connected to the bag 92-2 at the head thereof, and the width seal portion 91 is exactly at the cutting line. In position.
[0041]
FIG. 3B shows the arrangement of the clipper immediately after the cutting of the width seal portion along the cutting line Z. Immediately after the cutting, the lower chain 6b is accelerated to hold the separated bag 92-2. The above-mentioned clipper 501b moves relatively quickly at a higher speed than the clippers (hereinafter simply referred to as upper clippers) 501a and 502a of the upper chain 6a, moves quickly to the downstream side, and the bags already cut to the downstream side. Approach the upper clipper 501a holding 92-1. In conjunction with this, the clipper 502b of the lower chain (also simply referred to as the lower clipper) 502b approaches the upper clipper 502a.
[0042]
In FIG. 4 (A), when the lower clipper 501b, 502b approaches the upper clipper 501a, 502a due to the fast movement of the lower chain 6b, the lower chain 6b decelerates and the lower clipper 502b on the upstream side. However, the upper and lower clippers are held at a constant speed and a constant speed by gripping and holding the upper edge of the corresponding next bag 92-4, and the next width seal portion 91 is positioned at the cutting line Z. Move until you reach. At this time, the upper and lower clippers 502a and 502b hold the connected bags 92-3 and 92-4, respectively, and the next bag 92-3 does not fall even if it is separated.
[0043]
In FIG. 4B, when the width seal portion 91 reaches the cutting line Z, the cutting blade 841 of the rotary blade cuts the width seal portion, but the bag 92-3 is separated by cutting the width seal portion. Then, this time, the speed of the upper chain 6a increases, and as shown in FIGS. 5A and 5B, the upper clipper 502a holds the separated bag 92-3 and moves to the downstream side. It moves quickly and moves until it approaches the already preceding bag 92-2, and at the same time, when the new upper clipper 503a from the upstream approaches the bag 92-5 and returns to the constant speed, the lower The side clipper 502b grips the bag 92-4, approaches the rotary blade 41 (FIG. 5B), and cuts. By repeating such an operation, the holding, cutting, and transporting of the bag are continuously and repeatedly performed.
[0044]
Such a mechanism is to change the mounting position of the clippers 5a, 5b with respect to the upper and lower chains 6a, 6b, even when the pitch of the bags formed on the film, that is, the interval between the bags, is changed on the sealing filling mechanism side. And can hold and transport bags. When the setting of the bag pitch is changed, the interval between the adjacent clippers is changed. The element that determines the interval between the adjacent clippers 5a and 5b is, as shown in FIGS. 3A and 5B, a cutting line. Z is the bag pitch when two unseparated bags 92, 92 are held on both sides in Z and moved to the time of cutting, which is the distance between the clipper of the upper chain 6a and the clipper of the lower chain 6b. I can decide. Therefore, the distance between the upper clipper 5a and the lower clipper 5b can be controlled by the servo motors Ma and Mb that drive the chains 6a and 6b, respectively. The upper clipper 5a and the lower clipper 5b work at a constant speed in the process of holding two unseparated bags along both sides along the cutting line Z. Excluding this process, these two clippers are relatively Can be moved.
[0045]
In this embodiment, the upper and lower chains are controlled so that the distance between adjacent clippers can be relatively changed. A mechanism for that is shown in FIG. FIG. 7 is a cross-sectional view including a pair of drive-side sprockets, and drive sprockets for each chain are arranged at this end portion on the downstream side of the chain. Ma and Mb, and drive mechanisms 62 and 63 composed of upper and lower two-stage sprockets 62a and 62b and 63a and 63b directly connected to the rotary shafts 620 and 630 of the servo motor, respectively. Part and rear part. The upper sprockets 62a and 63a of these drive mechanisms mesh with the upper chain 6a, and the lower sprockets 62b and 63b mesh with the lower chain 6b.
[0046]
The drive mechanism 62 facing the front side of the apparatus couples the upper sprocket 62a of the two-stage sprocket with the servomotor Ma to drive the upper chain 6a, and the lower sprocket 62b is allowed to move freely. Thus, the lower chain 6b is simply guided. The other drive mechanism 63 behind the device is configured such that the upper sprocket 63a floats and guides the upper chain, but the servo motor Mb is coupled to the lower sprocket 63b to drive the lower chain 6b. By controlling the servomotors Ma and Mb of the mechanism, the constant speed movement and the acceleration / deceleration control of the corresponding upper chain 6a and lower chain 6b can be controlled as described above.
[0047]
FIG. 6 shows another embodiment in which the clip means comprises two sets of clippers 50a, 50a and 50b, 50b, and each set of clippers is connected to the upper chain 6a and the lower chain 6b, respectively. At regular intervals, a set of clippers 5a attached to the upper chain and a set of clippers 5b attached to the lower chain are alternately arranged. In this example, the cutting device 84 is used in a mode in which perforation and cutting are alternately performed on the width seal portion 91 of the connected bags, and the vertical seal portion 91 is formed by a perforation 911 as shown in the drawing. One set of clippers 5a, 5a holds and transports the two joined bags 92, 92. In this case, the rotary blade cutting device uses a rotary blade in which cutting blades for cutting and cutting blades for perforating are alternately arranged in the circumferential direction. Even in this case, even if the bag pitch is appropriately changed, the relative movement of the adjacent sets of clippers is performed by adjusting the relative speeds of the upper and lower chains in the same manner as the arrangement of the one set of one clipper. Can respond. The two clippers of each set may be fixed to the upper and lower chains at appropriate intervals so that they can be gripped at appropriate positions on the upper edges of the left and right bags around the perforation.
[0048]
It is also possible to arrange the clipping means with three or more clippers as one set, and similarly dispose the sets of clippers in the upper and lower chains at equal intervals and alternately, and However, it is also possible to hold bags connected at perforations.
[0049]
In this embodiment, an example of a rotary blade cutting device is shown, but as another cutting device, a fixed blade or a rotary blade and a sliding blade that slides so that the blade edge repeatedly mates with the blade edge are used. It is also possible to use a cutting device that passes a film connected with a bag between a fixed blade or a rotary blade and a sliding blade. In this case, the cutting edge and the perforated edge are individually drivably overlapped on the sliding blade, and drive control is performed so that one of the cutting edge and the perforated edge is paired with the fixed blade or the rotary blade. The width seal may be cut and perforated in the required number.
[0050]
【The invention's effect】
The cutting bag transport device of the present invention includes a pair of revolving means that translates laterally from the upstream side to the downstream side of the cutting apparatus, and a clipper that is separately attached to the respective revolving means and grips the upper edge of the bag. A clip motor and a drive motor that drives each chain so that the relative speed of the pair of orbiting means can be varied, and one or two or more clippers as one set, and a plurality of sets of clippers of one orbiting means. Are arranged alternately in the longitudinal direction of the circulating means, with a large number of sets of clippers of the other circulating means, so that it is determined in a dust filling and packaging machine which supplies a film by filling a dust and connecting a bag. According to the bag pitch, the distance between the clippers adjacent to each other can be adjusted by controlling the respective drive motors, thereby holding and cutting the bag, and cutting the separated bag after cutting. Transmission can be easily. In particular, even when the bag pitch is changed, the bag can be held and transported only by controlling the distance between the clippers adjacent to each other by controlling the drive motor with respect to the changed bag pitch.
[0051]
In particular, if electronic control is performed using a servomotor as a drive motor, the change required for switching to the bag pitch can be extremely easily performed.
[0052]
If a pair of chains arranged vertically above and below is used as the circling means and a set of clippers is alternately fixed to each chain, mutual control of adjacent clippers can be improved.
[Brief description of the drawings]
FIG. 1 is a sectional view of a cutting bag conveying device according to an embodiment of the present invention.
FIG. 2 is a partial cross-sectional view (A, B) of a clipper used in the cutting bag transport device according to the embodiment of the present invention.
FIGS. 3A and 3B show upper and lower circling means and clip means used by the cutting bag transport device of the present invention, and their operations.
FIG. 4 is a view (A, B) similar to FIG. 3, showing the operation of the cutting bag conveying device of the present invention.
FIG. 5 is a view (A, B) similar to FIG. 3, showing the operation of the cutting bag conveying device of the present invention.
FIG. 6 is a diagram showing another example of upper and lower circling means and clip means used in the cutting bag transport device of the present invention.
FIG. 7 is a sectional view showing a driving mechanism including a driving sprocket used in the cutting bag conveying device according to the embodiment of the present invention.
FIG. 8 is a cross-sectional view showing the relationship between the clipping means and the cutting device used in the cutting bag conveying device according to the embodiment of the present invention.
FIG. 9 is a schematic top view of a dust filling and packaging machine including the cutting bag transport device according to the embodiment of the present invention.
FIG. 10 is a schematic front view of a dust filling and packaging machine including a conventional cutting bag conveying device.
FIG. 11 is a diagram showing a conventional cutting bag transport device.
[Explanation of symbols]
5 Clip means
5a, 5b Upper and lower clippers
6. Orbiting means
6a, 6b Upper and lower chain
61a, 61b driven sprocket
62, 63 drive mechanism
84 Cutting device
90 films
91 width seal
92 bags
Ma, Mb drive motor

Claims (6)

A width seal portion is formed from a two-folded long film to form bags connected in the longitudinal direction. Each bag is filled with a powder, the upper edge is sealed, and then the width seal portion is cut. A bag transport device that transports each bag that holds each bag to be cut and separates the width seal portion by a cutting device,
A clip means including a pair of revolving means in which the bag conveying device is laterally translated from the upstream side to the downstream side of the cutting device, and a clipper which is attached to and separated from the respective revolving means and grips a bag upper edge. And a drive motor that drives the respective relative speeds of the pair of orbiting means variably,
The clip means includes one or two or more clippers as one set, and the multiple sets of clippers of one circulating means alternate with the multiple sets of clippers of the other circulating means in the longitudinal direction of the circulating means. The cutting bag transport device of the placed powder filling and packaging machine. The pair of circling means includes a pair of chains arranged on an upper side and a lower side, and each of the motors is a servo motor connected to each sprocket on the drive side of each chain, and the servo motors 2. The cutting bag conveying device according to claim 1, wherein a relative speed between the upper chain and the lower chain is controlled. A driven sprocket which is engaged with the upper chain and the lower chain, respectively, is fixed on the upstream side of the cutting device, and the driven sprockets are arranged coaxially in two upper and lower stages. Item 3. A cutting bag conveying device according to Item 2. 3. The cutting bag conveying device according to claim 2, wherein driving sprockets respectively engaging with the upper chain and the lower chain are fixed to the rotation shafts of the respective servomotors on the downstream side of the cutting device. The clip means is composed of a fixed gripping piece fixed to the upper and lower chains and having a gripping portion at the tip, and a movable gripping piece pivotally attached to the fixed gripping piece and moving toward and away from the gripping portion of the fixed gripping piece. The cutting bag conveying device according to any one of claims 1 to 4, further comprising a clipper, wherein a gripper of each of the clip means of the upper chain and the lower chain grips an upper edge of the bag so as to be conveyable. The cutting device includes a pair of rotary blades as cutting blades, wherein the upper and lower chains pass over the rotary blades, and the clipper passes between the pair of rotary blades. 6. The cutting bag conveying device according to any one of items 5 to 5.

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