JP2009023697A - Rotary type bagging and packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase process capacity without breaking an item to be filled in filling the item to be filled such as potato chips using a rotary type bagging and packaging machine. <P>SOLUTION: The bagging and packaging machine has a moving arm 21 which is moved vertically by the move of a drive lever 37 on an intermittently rotating table 1 corresponding to each gripper pair 2. Each arm 21 is provided with a hopper 6 and a chute 5. The arm 21 is moved downward and the bottom end of the hopper 6 is inserted in a bag opening when the lever 37 is moved down by the return rotation of an annular cam 49 and then the arm 21 is stopped by a stopper 27. When the lever 37 moves down further more, a moving lever 51 moves to pull a rod 57 for tilting the chute 5 for forming the same in an introduction posture with a lower outside end and a higher inside end. An item received in the chute 5 is slidingly dropped into the hopper 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotary type bag filling and packaging machine particularly suitable for filling a bag with a relatively fragile filling material such as potato chips.

Patent Documents 1 and 2 describe a bag filling and packaging machine that fills a bag with a relatively fragile filling material such as potato chips. Both are vertical pillow types (types in which the film is formed into a cylindrical shape and sent downward and the filled film is filled with the material to be filled), and an elevator (shutter) in the cylindrical film. To be charged into the tubular film from the weighing device through the hopper or from the belt conveyor through the chute, once received on the elevator, the elevator is lowered, and the elevator is tilted there to be covered. The filling material is dropped into the cylindrical film.
In this bagging and packaging machine, an elevator (shutter) is arranged in a cylindrical film, so that the shock received by the charged material to be charged is reduced and prevented from being broken. However, it takes time for one filling operation (injection through a hopper, etc., and elevator lowering, elevator tilting and falling of filling material, elevator rising), and this filling operation must be completed completely. Since the next input is not possible, the processing capacity does not increase.

The packaging machine described in Patent Document 3 is a rotary type, and in a specific process (solid filling process), an object to be filled fed from a belt conveyor is put into a bag via a chute and a hopper. . For this reason, this packaging machine takes time for filling and does not increase the processing capacity, and it cannot be said that it is intended for a fragile filling material such as charging the filling material through a chute and a hopper at once in the filling process. .
The packaging machine described in Patent Document 4 is a rotary type, and an object to be filled is put into a bag through a hopper in a specific process (filling process). However, it cannot be said that it is intended to be a fragile filling material like Patent Document 3.
As described above, in Patent Documents 1 to 4, when a rotary type bag filling and packaging machine is used for filling a fragile filling material, specific materials for preventing the filling material from being broken and improving the processing capability are disclosed. Means are not disclosed.

Japanese Patent Publication No. 7-108692 Japanese Patent No. 2618773 Japanese Utility Model Publication No. 50-65863 Japanese Patent No. 3742042

  It is an object of the present invention to prevent the filling material from being broken and to improve the processing capability at the same time when a rotary type bag filling and packaging machine is used for filling a relatively fragile filling material such as potato chips. To do.

  The rotary-type bagging and packaging machine according to the present invention has a plurality of gripper pairs that are arranged at equal intervals along an annular path, hold the bag in a suspended manner, and rotate along the annular path, During the rotation of the gripper pair, packaging operations such as gripping the bag by the gripper pair, opening the bag mouth, filling the object to be filled, and sealing the bag mouth are sequentially performed. Elevating members that are moved up and down by the driving means are installed on the rotating support members in correspondence with each pair of grippers, and each of the elevating members is provided with a cylindrical hopper that guides an object to be filled and dropped in a bag, and Chutes to be introduced into the hopper after receiving the filling are respectively installed, and the hopper is installed at the outer end of the elevating member and moves up and down together with the elevating member, and the elevating member descends The lower end is inserted into the bag mouth gripped by the pair of grippers, and when the elevating member is raised, it returns to the upper standby position, and the chute is at a position where its outer end faces the upper end opening of the hopper. It is arranged and can be lifted and tilted together with the lifting member, and after being lowered together with the lifting member, it is tilted so that the outer end is low and the inner end is high, and when the lifting member is raised, it is in the upper standby position. It is characterized by returning. In the present invention, raising and lowering includes raising and lowering by swinging. The inner side means the center side of the annular path, and the outer side means the opposite side.

In this rotary type bag filling and packaging machine, a table in which a plurality of gripper pairs are installed is intermittently rotated (see Patent Documents 3 and 4), and a table in which a plurality of gripper pairs is installed is continuously rotated (Actual 3) No.-12645), or a type in which an endless transport body such as a chain provided with a plurality of gripper pairs is rotated continuously or intermittently along a racetrack-shaped annular path (see Japanese Patent Laid-Open No. 2002-302227) Etc. are included.
When the rotary type bagging and packaging machine according to the present invention is a type in which a table provided with a plurality of gripper pairs rotates continuously or intermittently (hereinafter referred to as a rotary table type), the gripper pair is used together with the table. Rotating, the circular path is circular, and the table also serves as the support member. That is, the elevating member is installed on the table corresponding to each pair of grippers. On the other hand, in the case of a type using an endless transport body such as a chain (hereinafter referred to as a chain type when particularly distinguished), a support member for installing an elevating member is installed on the endless transport body for each gripper pair, It is necessary to rotationally move with the gripper pair.

  In the above rotary type bag filling and packaging machine, a chute and a hopper are installed corresponding to each pair of grippers, and these rotate together. The time to be allowed to leave) can be set relatively freely. For example, when the time for which the chute is gently tilted and / or tilted is increased, the sliding of the filling material onto the hopper is prevented at a stretch. When the time for tilting the chute is lengthened, the chute introduction posture (tilted state) is continuously maintained over a plurality of stop positions, for example, when the gripper pair is intermittently rotated. However, the introduction posture does not always have to be the same, and for example, the introduction posture can be gradually inclined deeply at each stop position. Further, in the case of the type in which the gripper is continuously rotated, the chute introduction posture (inclined state) is continuously maintained while the gripper pair rotates and moves more than 1 times the interval, for example. Also in this case, the introduction posture does not always have to be the same, and can be gradually inclined deeply during the rotational movement.

In the rotary bag filling and packaging machine, generally, the chute is lowered together with the elevating member, and then tilted from a substantially horizontal posture so that the outer end is low and the inner end is high. In a substantially horizontal posture before tilting, the filling material is received from, for example, a measuring instrument, and the filling material is slid down from the chute to the hopper by being in the introduction posture.
However, the chute has a groove shape and the inner end is closed, and the receiving posture when the chute is lowered together with the lifting member is inclined in the direction opposite to the introduction posture (the inner end is low and the outer end is high). It can also be a posture. By doing so, the filling material received in the chute can easily gather at a certain position near the inner end in the chute. Alternatively, when the elevating member rises and the chute returns to the upper standby position, the chute is set to a standby attitude (= accepting attitude) inclined in a direction opposite to the introduction attitude, and the chute in the standby position It is also possible to accept the filling material.

In the case of the rotary table type, the driving means for raising and lowering the elevating member is, for example, an annular cam installed concentrically with the table and an intermediate part pivotally supported by a stand erected on the table, and can swing up and down. A drive lever, a cam roller that is rotatably installed at the inner end of the drive lever and rolls along the annular cam to swing the drive lever, and between the outer end of the drive lever and the elevating member And a swinging mechanism of the drive lever is transmitted to the lifting member via the connecting mechanism, whereby the lifting member moves up and down. When the table is continuously rotated, the annular cam is fixed. When the table is intermittently rotated, the annular cam may be fixed, or may be installed so that it rotates at the same angle following the rotation of the table and returns to the original position when the table stops.
On the other hand, in the case of the chain type, the annular cam is installed along the annular path of the gripper and is fixed.
In both the rotary table type and the chain type, instead of installing an annular cam or cam roller as a driving source for the driving means, a driving source such as an air cylinder corresponding to each lifting member is installed on the table or support member. Thus, each elevating member can be moved up and down (with or without the drive lever and coupling mechanism).

For example, the elevating member has an inner end pivotally supported by a stand standing on the table so that the elevating member can swing up and down, and an elevating member stopper that restricts the lower end position of the elevating member is installed on the stand. .
The chute is also pivotally supported by, for example, an outer end of the elevating member, and can be swung up and down, and a chute stopper that abuts the chute and stops tilting in the reverse direction is installed on the elevating member. In this case, as a tilting means for tilting the chute, a tilting coupling mechanism is interposed between the coupling mechanism of the driving means and the swing support shaft of the chute, and after the lifting member is stopped by the lifting member stopper, The downward swing of the drive lever is transmitted to the support shaft of the chute via the coupling mechanism and the tilting coupling mechanism, and when the chute is tilted, the chute is tilted only by the driving means that raises and lowers the lifting member. Can also be done. However, a driving source such as an air cylinder may be separately installed on each of the elevating members so that the chute can be tilted.

In the present invention, after a rotary type bag filling and packaging machine is used and a chute and a hopper corresponding to each of a plurality of gripper pairs are installed, for example, a filling material is supplied from a measuring instrument or the like to one chute. Even when the filling material is still present on the chute, the filling material can be supplied to the next rotating chute. That is, the filling material for filling the next bag can be received in the next chute without waiting for the filling material received by the chute to completely fall into the bag through the hopper (in some cases). Can also be accepted one after another in the next chute, etc.), which greatly improves the processing capacity of the packaging machine.
In addition, a chute and a hopper are installed corresponding to each gripper pair, and these rotate together. Therefore, the timing for sliding the filling material from the chute to the hopper can be set relatively freely. That is, settings such as slowing the rate at which the chute is tilted and / or taking a longer time for tilting can be made relatively easily without reducing the overall processing capacity of the packaging machine. By doing so, the filling material can be gradually slid down from the chute to the hopper, and the shock received by the filling material is reduced as compared with the case of sliding down at a stroke.

  In the rotary type bag filling and packaging machine of the present invention, the hopper and the chute are installed on the same elevating member, and the outer end of the chute (the end on the input side to the hopper) is arranged to face the upper end opening of the hopper. . When filling the bag with the filling material, for example, the filling material weighed with a measuring instrument or the like is once received on the chute, and then the chute is tilted so that the filling material on the chute is placed in the upper end opening of the hopper. The object to be filled slides into the hopper from the outer end disposed at the facing position, and immediately falls into the bag. At this time, since the outer end of the chute is arranged at a position facing the upper end opening of the hopper, a drop to the hopper can be reduced, and the shock received by the filling material when the filling material slides into the hopper from the chute. Further, since the lower end portion of the hopper is inserted into the bag mouth, the shock received by the filling material when the filling material falls from the hopper into the bag is also reduced. For this reason, even when filling a relatively fragile filling material such as potato chips, the filling material can be prevented from being broken. In particular, as described above, by setting the speed at which the chute is tilted to be slow and / or to increase the time for tilting, it is possible to better prevent the filling material from being broken.

Hereinafter, the rotary type bag filling and packaging machine according to the present invention will be described in detail with reference to FIGS.
FIG. 1 shows an intermittent rotary table type rotary bagging and packaging machine, which has 12 pairs of grippers 2 arranged at regular intervals around a table 1 that rotates intermittently, and has 12 stop positions. It is set, and various packaging processes are sequentially performed at each stop position. Briefly, a conveyor magazine type bag feeder 3 is installed at the stop position A (bag feeding process), a bag is supplied to the gripper pair 2, and a printer 4 is installed at the stop position B (printing process). Printing is performed on the bag surface, and printing inspection is performed at the stop position C (printing inspection process). During this time, the chute 5 and the hopper 6 are in the standby position above the gripper pair 2 (see FIG. 4).

At the stop position D (bag opening process), a bag opening device 7 and a bag bottom expanding device 8 are installed to open the bag mouth and expand the bag bottom (expanding the entire bag) using a suction cup. Subsequently, the chute 5 and the hopper 6 are lowered, and the hopper 6 is inserted into the bag mouth (see FIG. 2). In the stop position E (filling material receiving step), the chute 5 receives a predetermined amount of the filling material 9 from a measuring instrument (not shown).
At the stop positions F to H (introduction process), the chute 5 tilts (see FIG. 3), and the received filling material 9 is introduced into the hopper 6 (slid down). The filling material that has entered the hopper 6 immediately falls into the bag. At the stop positions F and G, the tilt angle can be set to be deeper in the order of F and G. Moreover, the bag bottom tapping device 11 is installed at the stop positions F to H, and the bag that has received the filling object 9 receives tapping on the bottom of the bag while it is stopped and moved, and thus the filling object that has entered the bag. 9 is filled without causing a bridge or the like in the bag. At the stop position H, the chute 5 and the hopper 6 return to the upper standby position.

  A gas blowing device (not shown) is installed at the stop position I (gas blowing step), the air in the bag is replaced with an inert gas such as nitrogen gas, and the bag mouth sealing device at the stop position J (bag mouth sealing step). 12 and the defective bag discharge chute 13 are installed, the bag mouth is sealed, the bag (defective bag) in which the defect is detected in the process so far is dropped by opening the gripper pair 2, and the defective bag discharge chute 13 is Discharge. In the stop position K (sealing part cooling and bag discharging process), the sealing part cooling device 14 and the product bag discharge chute 15 are installed, the sealed bag mouth is cooled, and then the gripper pair 2 is opened to remove the product bag. It is dropped and discharged through the product bag discharge chute 15. The stop position L is a preliminary process.

Next, the filling device (chute 5, hopper 6 and its driving means, etc.) of this rotary type bag filling and packaging machine will be described with reference to FIGS.
In this rotary type bag filling and packaging machine, parts other than those relating to the filling device are known. As shown in FIGS. 2 and 5, the table 1 is fixed to a hollow rotating shaft 16 that intermittently rotates one step at a time by a driving source (not shown), and 12 pairs of grippers 2 are installed around the table 1. The gripper pair 2 is a publicly known gripper that holds both upper edges of the bag 17 by a pair of opposed grippers and suspends the bag 17. Enlargement and reduction) are performed at a known timing.

A total of twelve stands 18 are fixed to the upper surface of the table 1 corresponding to each gripper pair 2, and a reinforcing annular stay 19 is fixed to the upper surface of each stand 18.
The swing arm 21 is pivotally supported by the stand 18 on a support shaft 22 installed at the inner end thereof (the center side of the table is the inside and the radial direction is the outside) and moves up and down in a vertical plane passing through the center of the table 1. It can be swung freely. The swing arm 21 includes a first arm portion 23 close to the support shaft 22 and a second arm portion 24 fixed to the tip of the first arm portion 23. The swing arm 21 corresponds to the lifting member of the present invention.

The first arm portion 23 includes a pair of parallel plates 25 and 25 and a plate 26 fixed to the upper surfaces of the plates 25 and 25, and a shaft portion of a stopper 27 is attached to the plate 26. The stopper 27, together with the stopper abutting portion 28 formed on the stand 18, defines the lower end position (lower swing limit) of the swing arm 21.
The second arm portion 24 is a substantially rectangular frame body in plan view (see FIG. 5), and the hopper 6 is fixed to the center portion of the plate 29 at the outer end via an attachment portion 31. The side plates 32 and 33 constituting the frame body are substantially J-shaped when viewed from the side (see FIG. 2), and rods (chute stoppers 34) for connecting the plates 32 and 33 are installed at locations corresponding to the curved portions of the J-shape. ing. A shaft 35 is rotatably supported by the plates 32 and 33 in the vicinity of the outer end of the second arm portion 24, and a cross-sectional groove type frame body 36 is fixed to the shaft 35, and the chute 5 is fixed to the frame body 36. ing. The chute 5 is a cross-sectional groove type (bottom plate 5a and both side plates 5b, 5c), and its inner end is closed by an end plate 5d.

As shown in FIGS. 2 and 6, the drive lever 37 is rotatably supported by the stand 18 on the support shaft 38, so that the drive lever 37 can swing up and down around the support shaft 38 in the vertical plane. Has been. A cam roller 46 is installed on the inner end of the drive lever 37 via a connecting link 42. Above the drive lever 37, the link 39 is rotatably supported by the stand 18 on the support shaft 41, so that the link 39 can swing up and down around the support shaft 41 in a vertical plane parallel to the drive lever 37. It is said that.
The upper end of the connecting link 42 is rotatably connected to the inner end of the link 39 on the shaft 43, and the lower end of the connecting link 42 is rotatably connected to the inner end of the drive lever 37 on the shaft 44. A shaft 45 facing inward is fixed, and a cam roller 46 is rotatably installed on the shaft 45. The drive lever 37, the link 39, the stand 18, and the connecting link 42 constitute a kind of parallel link mechanism, and the rotating shaft 45 of the cam roller 46 is always kept horizontal.

A tension spring 47 is installed between the drive lever 37 and the table 1, and the cam roller 46 is always urged upward.
A rotary shaft 48 that is reciprocally rotated by a drive source (not shown) is rotatably supported inside the hollow rotary shaft 16, and an annular cam 49 having a downward cam surface is fixed to the upper end thereof. The urging force of the tension spring 47 makes contact with the cam surface of the annular cam 49. The annular cam 49 rotates together with the rotation of the table 1, and after the table 1 stops, reverses the same angle and returns to its original position. At this time, the cam roller 46 rolls along the cam surface of the annular cam 49 and swings the drive lever 37.

  The swing lever 51 is rotatably supported on the inner end of the second arm 24 on the support shaft 52, whereby the swing lever 51 is swingable about the support shaft 52 in the vertical plane. Further, the upper end of the connection link 53 is rotatably connected to the outer end of the drive lever 37 on the shaft 54, and the lower end of the connection link 53 is rotatably connected to one end of the swing lever 51 on the shaft 55. . The structure of the drive lever 37 to the shaft 55 and the drive source of the rotating shaft 48 correspond to the drive means (drive means for the lifting member) in the present invention. The structure of the swing lever 51 to the shaft 55 that connects the drive lever 37 and the swing arm 21 (corresponding to the lifting member of the present invention) corresponds to the drive mechanism connecting mechanism in the present invention.

A swing lever 56 is fixed to one end of the shaft 35. When the swing lever 56 swings, the shaft 35 rotates and the chute 5 tilts about the shaft 35.
One end of the rod 57 is rotatably connected to the vicinity of the end of the swing lever 51 on the shaft 58 (the side opposite to the side where the shaft 55 is installed), and the other end of the rod 57 is connected to the swing lever 56 on the shaft 59. It is rotatably connected to the end. Thus, when the outer end of the drive lever 37 swings further downward from the state of FIG. 2, the swing lever 51 swings clockwise in FIG. 2, and the rod 57 is pulled inward, so that the swing lever 56 swings leftward in FIG. 2, and the chute 5 tilts. The structure of the swing lever 51, the shaft 35, and the swing lever 56 to shaft 59 between them corresponds to the tilting connection mechanism in the present invention.

Then, with reference to FIGS. 2-4, the operation | movement of the order of the process of the filling apparatus of the rotary type bagging packaging machine which concerns on this invention is demonstrated.
(1) Until the bag opening process (stop position D) Until the gripper pair 2 stops at the stop position D, the cam roller 46 has the lowest cam surface 49a (hereinafter referred to as the first cam surface 49a) of the annular cam 49 as shown in FIG. The cam roller 46 is in a depressed position, and the outer end of the drive lever 37 swings upward, via the connecting mechanism (the connecting link 53, the swinging lever 51, etc.). The swing arm 21 swings upward and the outer end is raised. At this time, the chute 5 and the hopper 6 are in the upper standby position, and the bottom portion of the chute 5 is locked by the chute stopper 34 in the vicinity of the inner end, and is in a standby posture in which the inner end is low and the outer end is high.

(2) Bag mouth opening process (stop position D)
After the gripper pair 2 stops at the stop position D, when the annular cam 49 rotates in the reverse direction by a predetermined angle, the cam roller 46 rolls, and the cam surface 49b that is one step higher than the first cam surface 49a (hereinafter referred to as the second cam surface 49b). Move on. As shown in FIG. 2, the outer end of the drive lever 37 swings downward due to the biasing force of the tension spring 47 and the weight of the swing arm 21, chute 5, hopper 6, etc., and swings via the coupling mechanism. The arm 21 swings downward, the stopper 27 contacts the stopper contact portion 28, and the swing arm 21 is positioned at a predetermined lower position. At this time, the hopper 6 is inserted into the bag mouth of the opened bag 17, the chute 5 is locked by the chute stopper 34, and has a substantially horizontal posture at a position where the outer end faces the upper end opening of the hopper 6.
(3) Filling material receiving process (stop position E)
After the gripper pair 2 stops at the stop position E, an object to be filled is supplied to the chute 5 in a substantially horizontal posture from a measuring instrument or the like. After the gripper pair 2 is stopped, the annular cam 49 rotates in the reverse direction by a predetermined angle. At this time, the height of the cam surface on which the cam roller 46 rolls does not change and remains the second cam surface 49b, and the chute 5 and the hopper The position and posture of 6 do not change from the state of FIG.

(4) Input process (stop position F)
After the gripper pair 2 stops at the stop position F, when the annular cam 49 rotates in the reverse direction by a predetermined angle, the cam roller 46 rolls and is further raised from the second cam surface 49b by a cam surface 49c (hereinafter referred to as a third cam surface 49c). ) Accordingly, as shown in FIG. 3, the outer end of the drive lever 37 swings further downward, while the swinging arm 21 is positioned with the stopper 27 abutting against the stopper abutting portion 28 and descends further. Therefore, the shaft 35 rotates via the tilting coupling mechanism (the swing lever 51, the rod 57, the swing lever 56, etc.), and the chute 5 tilts around the shaft 35, and the outer end is low and the inner end is high. It is an introduction posture. Thereby, the filling material slides down from the chute 5 into the hopper 6 and then falls into the bag 17. At this time, if the inclination of the cam surface in the transition region from the second cam surface 49b to the third cam surface 49c of the annular cam 49 is made loose, the chute 5 is gradually tilted, and the sliding of the filling material is slow. Become. In addition, since the bag 17 receives a tapping action, the filling material dropped into the bag 17 is accommodated in the bag 17 without causing a bridge or the like.
(5) Input process (stop position G)
After the gripper pair 2 stops at the stop position G, the annular cam 49 rotates reverse by a predetermined angle. At this time, the height of the cam surface on which the cam roller 46 rolls does not change, and the third cam surface 49c remains. The positions and postures of the chute 5 and the hopper 6 do not change from the state shown in FIG. During this time (including during the movement of the gripper pair 2), sliding of the filling material from the chute 5 and tapping of the bag 17 are continuously performed.

(6) Input process (stop position H)
The charging process continues until the gripper pair 2 stops at the stop position H (more precisely, while the cam roller is positioned on the third cam surface 49c). When the annular cam 49 rotates in the reverse direction and the cam roller 46 rolls and moves from the third cam surface 49c to the original first cam surface 49a, the outer end of the drive lever 37 swings upward as shown in FIG. Then, the operation opposite to that described so far is performed. First, the chute 5 returns to the horizontal posture, and then the swing arm 21 swings upward, so that the chute 5 and the hopper 6 swing upward ( At this time, the hopper 6 is extracted from the bag mouth of the bag 17), and returns to the original standby position. This state is maintained until the bag mouth opening process (stop position D).

The present invention has been specifically described above by taking an intermittent rotary table type rotary bag filling and packaging machine as an example. However, for example, the present invention can be variously modified as shown below.
(A) In the above example, as the drive means for tilting the chute, the drive means for raising and lowering the elevating member (swinging arm 21) is used, so only one drive source is required. It is also possible to tilt each chute at a predetermined timing by installing the driving means. Alternatively, other drive sources such as an air cylinder can be used as the drive means for each lifting member.
(B) In the above example, the elevating member (and hopper, chute) is moved up and down, but it can also be moved up and down vertically.
In the above example, the attitude of the hopper is changed between the inclined state and the vertical state as the hopper is moved up and down. However, the hopper can be moved up and down (vertically moved up or down) while maintaining the vertical state. it can. In that case, the insertion into the bag mouth is performed more reliably.

(C) In the above example, the chute is allowed to take a substantially horizontal posture in the filling material receiving step (stop position E). However, it is also possible to take an inclined posture (the outer end is high and the inner end is low). it can. Alternatively, the filling material receiving process may be set before the stop position D without being set at the stop position E and supplied to the chute in the standby posture. In either case, the filling material received in the chute is likely to gather at a fixed position near the inner end of the chute, and when tilting and sliding the filling material, it can be slid in the same state every time. .
(D) In the above example, the inclination of the chute in the introduction posture is kept constant from the stop position F to the stop position H. However, the height of the cam surface on which the cam roller rolls at both the stop positions F and G is small. It can be set to change. As a result, the tilt of the chute is gradually performed (in two steps), and the sliding of the filling material is also performed gently.

(E) In the above example, the cam surface of the annular cam is a smooth surface, but unevenness is formed along the circumferential direction on the cam surface (cam surface) on which the cam roller rolls when the chute takes the introduction posture. You can also. In this case, the cam roller vibrates slightly as it rolls, and as a result, the chute vibrates slightly up and down, and the sliding of the filling material can be promoted.
(E) Although the above example is an intermittent rotary table type rotary bag filling and packaging machine, the present invention can also be applied to a continuous rotary table type. In this case, the annular cam is fixed.
Furthermore, it is easy to apply the present invention to a chain type.

1 is an overall plan view of a rotary type bag filling and packaging machine according to the present invention. It is a figure which shows the action | operation of the filling apparatus of the rotary type bag filling packaging machine in order of a process. It is a figure which shows the action | operation of the filling apparatus of the rotary type bag filling packaging machine in order of a process. It is a figure which shows the action | operation of the filling apparatus of the rotary type bag filling packaging machine in order of a process. It is a top view (partial AA sectional drawing of FIG. 2) of the filling apparatus of the rotary type bag filling packaging machine. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG.

Explanation of symbols

1 Table 2 Gripper pair 5 Chute 6 Hopper 21 Swing arm (lifting member)
27 Stopper 28 Stopper contact part 34 Chute stopper 37 Drive lever 42 Link 46 Cam roller 49 Annular cam 51 Oscillating lever 56 Oscillating lever 57 Rod

Claims (10)

A plurality of gripper pairs that are arranged at equal intervals along the annular path to grip the bag in a suspended manner and rotate along the annular path, and the gripper pair is rotated while the gripper pair rotates once. In a rotary type bag filling and packaging machine in which packaging operations such as gripping of a bag, opening of a bag mouth, filling of an object to be filled and sealing of a bag mouth are sequentially performed, the support member that rotates together with the gripper pair is moved up and down by a driving means. Elevating members are installed corresponding to each pair of grippers, and each elevating member is provided with a cylindrical hopper for guiding an object to be dropped and filled in a bag, and once the object is received, Chutes to be introduced are respectively installed, and the hopper is installed at an outer end of the elevating member and moves up and down together with the elevating member. When inserted into the bag mouth gripped by the par pair, when the elevating member rises, it returns to the upper standby position, and the chute is disposed at a position where its outer end faces the upper end opening of the hopper, and the elevating member It can be lifted and tilted together, and after being lowered together with the lifting member, it is tilted so that the outer end is low and the inner end is high, and when the lifting member is lifted, it returns to the upper standby position. Rotary type bagging and packaging machine. There are a plurality of gripper pairs that are arranged at equal intervals around the rotating table and grip the bag in a suspended manner, and while the table rotates once, gripping the bag by the gripper pair, opening the bag mouth, In a rotary type bag filling and packaging machine in which packing operations such as filling of an object to be filled and sealing of a bag mouth are sequentially performed, lifting members that are lifted and lowered by driving means are installed on the table corresponding to each pair of grippers. The elevating member is provided with a cylindrical hopper for guiding the filling material to be dropped and filled in the bag, and a chute for receiving the filling material and then introducing the filling material into the hopper. The lower end is inserted into the bag mouth gripped by the pair of grippers when the elevating member is lowered, and the elevating member is raised. The chute returns to the upper standby position, and the chute is disposed at a position where the outer end thereof faces the upper end opening of the hopper, can be lifted and tilted together with the lifting member, and lowered with the lifting member, A rotary type bagging and packaging machine that tilts and has an introduction posture in which the outer end is low and the inner end is high, and when the elevating member is raised, the bag is returned to the upper standby position. 3. The rotary type according to claim 2, wherein the rotary type bag filling and packaging machine is a type in which the table rotates intermittently, and the introduction posture of the chute is continuously maintained over a plurality of stop positions. Bagging and packaging machine. The rotary type bag filling and packaging machine is a type in which the table is continuously rotated, and the introduction posture of the chute is continuously maintained while the gripper pair rotates and moves more than 1 time of the interval. The rotary type bag filling and packaging machine according to claim 2. The chute has a groove shape, the inner end is closed, and when the elevating member is raised and the chute returns to the upper standby position, the chute is in a receiving posture inclined in a direction opposite to the introduction posture. The rotary type bag filling and packaging machine according to any one of claims 1 to 4. The chute has a groove shape and an inner end is closed, and when the elevating member is lowered and the chute is lowered, the chute has a receiving posture inclined in a direction opposite to the introduction posture. The rotary type bag filling and packaging machine described in any one of 1 to 4. The drive means includes an annular cam installed concentrically with the table, a drive lever pivotally supported by a stand erected on the table and swingable up and down, and an inner end of the drive lever And a cam roller that rolls along the annular cam to swing the drive lever, and a coupling mechanism that is interposed between the outer end of the drive lever and the elevating member. The rotary type bagging and packaging machine according to any one of claims 2 to 6, wherein the swinging is transmitted to the elevating member via the connecting mechanism, whereby the elevating member is moved up and down. The rotary type bag filling and packaging machine is a type in which the table rotates intermittently, the annular cam rotates following the rotation of the table, and returns to its original position when the table stops. The rotary type bag filling and packaging machine according to claim 7. The elevating member has an inner end pivotally supported by a stand standing on the table so that it can swing up and down, and an elevating member stopper for restricting the lower end position of the elevating member is installed on the stand. A rotary type bag filling and packaging machine according to any one of claims 2 to 8. The elevating member has an inner end pivotally supported by a stand erected on the table so that it can swing up and down, and an elevating member stopper for restricting the lower end position of the elevating member is installed on the stand, and the chute Is pivotally supported in the vicinity of the outer end of the elevating member and is swingable up and down, and a chute stopper is provided on the elevating member to abut the chute and stop tilting in the reverse direction to define the posture of the chute, and A tilting coupling mechanism interposed between the coupling mechanism and the swing support shaft of the chute, and after the elevating member is stopped by the elevating member stopper, the downward swinging of the drive lever causes the coupling mechanism and tilting The rotary type bagging according to claim 7 or 8, wherein the chute is tilted by being transmitted to a swing support shaft of the chute via a coupling mechanism. Packaging machine.

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