JP2012166831A - Elevating package processing apparatus of intermittent rotation-type rotary bagging and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package processing apparatus which improves workability in maintenance in an intermittent rotation-type rotary bagging and packaging machine, and can prevent damage and the like, for example, when a bag mouth is not properly opened or when synchronization between a gripper and the package processing apparatus is lost.SOLUTION: A tuning table 49 which is driven by a drive source 48 different from a main drive source of the packaging machine is provided above a plurality of sets of grippers 3 and 3 which intermittently move on a circular orbit. The hoppers are provided in such a manner as to correspond to the respective grippers 3 and 3 along a circumferential direction of the tuning table 49. The hoppers are lifted and lowered together with the rotation of the tuning table by a cylindrical cam 63. An auxiliary cam 71 is shifted to an actuated position from a standby position on the basis of a predetermined signal, a cam roller 59 positioned below a receding position is moved to ascend or the cam roller urged to move downward through the receding position is received in a midway position, and the lowermost end of the hopper is kept in the receding position not to interfere with an uppermost end of the gripper.

Description

  The present invention relates to a packaging processing apparatus that performs packaging processing in an automatic bagging and packaging machine for food, etc. More specifically, the present invention intermittently moves on a predetermined circular orbit in a horizontal plane and sandwiches both side edges of the bag. Intermittent rotary-type rotary bagging and packaging machine that includes a plurality of pairs of left and right grippers that can be held, and that holds the bags in a suspended state with these grippers and sequentially performs a predetermined packaging process on the bags while transferring the predetermined range. In particular, the same type of packaging processing member is installed in correspondence with each gripper, and the packaging processing member is moved up and down in synchronization with the corresponding gripper to perform a predetermined packaging processing. The present invention relates to a packaging processing apparatus, a so-called synchronized packaging processing apparatus. In addition, as a packaging processing apparatus provided with the packaging processing member in this invention, the packing object filling apparatus, such as a solid material filling guide hopper or a liquid filling nozzle, a gas displacement apparatus provided with a gas blowing nozzle, a deaeration nozzle Or a capping device for attaching a lid.

  An intermittent rotary type rotary bag filling and packaging machine equipped with a synchronous packaging processing apparatus is disclosed in Japanese Patent No. 2884064 (packing processing member is a filling funnel), Japanese Patent No. 3742042 (packing processing member is a filling funnel and gas filling nozzle), No. 2008-308204 (the packaging processing member is a gas filling nozzle or a liquid filling nozzle).

However, all of the packaging processing members described in the above publication are driven and moved up and down by a common drive source with a rotor (rotary table) that is a gripper moving mechanism, and are intermittently rotated rotor type. When performing cleaning and maintenance by stopping the machine from operating as a part of a bagging and packaging machine, especially in the process where the packaging processing member is located at the lower end position, the cleaning work and the There is a problem that maintenance work is difficult. For example, in a packaging machine that uses a lifting hopper to fill a package, if the bag mouth of the bag used for packaging is not properly opened, it is detected and the package Even if the filling is stopped, since the raising and lowering of the packaging processing member is usually performed by the cam, the hopper is lowered as it is, and there is a problem that the bag is damaged by the lowered hopper.

Japanese Patent No. 2884064 Japanese Patent No. 3742042 JP 2008-308204 A

  The present application has been made in view of the above-described conventional problems. When the intermittent rotary rotary bag filling and packaging machine and various packaging processing apparatuses are configured in synchronism with each other, the workability during cleaning or maintenance is conventionally improved. In addition, the gripper and the packaging processing member when the bag mouth is not properly opened and the bag is damaged by the packaging processing member or when the gripper and the packaging processing member are out of synchronization. It is an object of the present invention to provide a packaging processing apparatus that can prevent damage or the like due to interference.

In order to solve the above problems, the present invention provides a packaging apparatus having the following configuration. First, the packaging processing apparatus is provided with a plurality of sets of grippers that intermittently move on a predetermined circular orbit, holds both side edges of the bag by the grippers, holds the bag in a suspended state, and transfers it within a predetermined range. It is the packaging processing apparatus used for the intermittent rotation type rotary type bag filling and packaging machine which performs various packaging processes. The packaging processing apparatus is disposed above the gripper, driven by a driving source independent of the main driving source of the packaging machine, and a synchronization table that rotates intermittently in synchronization with the packaging machine, and the plurality of sets. A plurality of the same packaging processing members, which are provided along the circumferential direction on the synchronization table so as to correspond to the grippers, and can be moved up and down, and the packaging processing members are moved up and down between the rising end position and the falling end position. The lifting means and a packaging processing member positioned below the retracted position are moved upward to the retracted position based on a predetermined signal, or the packaging treatment member that attempts to move downward through the retracted position is fastened and the retracted And a retracting position is set to a position where the lowermost end portion of the packaging processing member is higher than the uppermost end portion of the gripper.
In the other form of this invention, the said retracted position is set to the position where the lowermost end part of the said packaging process member becomes higher than the upper end edge part of the bag hold | gripped by the gripper of the said packaging machine.
In another embodiment of the present invention, when there are a plurality of packaging processing members that are at a position lower than the retracted position or that pass through the retracted position to move downward, the control means is based on the predetermined signal. Optionally, a part or all of the packaging processing member that is at a position lower than the retracted position or that moves through the retracted position and moves downward is held at the retracted position.
In another embodiment of the present invention, the control means retracts all the packaging processing members that are at a position lower than the retracted position based on the predetermined signal or that move downward through the retracted position. Hold on.
In another aspect of the invention, the predetermined signal has a plurality of types, and is located at a position lower than the retracted position or passed through the retracted position based on a part of the plurality of types of signals. When there are a plurality of packaging processing members to be moved to, the control means is selectively a part of the packaging processing member which is at a position lower than the retracted position or moves downward through the retracted position. Alternatively, all of the packaging processing members that hold all at the retracted position and are located at a position lower than the retracted position or move downward through the retracted position based on other signals among the plurality of signals. Is held in the retracted position.
In another embodiment of the present invention, the elevating means is disposed along the circumferential direction of the tuning table, and the packaging processing member is moved between the rising end position and the falling end position as the tuning table rotates. It has a cam that moves up and down. The packaging processing apparatus further includes a restricting means movable between a standby position and an operating position, and the control means operates the restricting means from the standby position to the operating position based on the predetermined signal. Accordingly, the packaging processing member positioned below the retracted position is moved upward to the retracted position, or the packaging processing member that attempts to move downward through the retracted position is received and moved to the retracted position. Hold.
In another embodiment of the present invention, a cam roller that rolls on the cam is attached to the packaging processing member, and the restricting means includes an auxiliary cam on which the cam roller can ride and an operation of the auxiliary cam. An urging unit that constantly urges toward the position; and an auxiliary cam driving unit that applies a driving force against the urging force of the urging unit to hold the auxiliary cam in the standby position, and the predetermined signal When the driving force of the auxiliary cam driving means is released based on the above, the auxiliary cam moves to the operating position by the auxiliary cam biasing means.
Furthermore, in another embodiment of the present invention, the predetermined signal is a maintenance inspection start signal output when performing maintenance inspection, a shutdown signal due to a main power off operation, or opening of the bag mouth is not properly performed. Or an abnormal signal output when the synchronization between the packaging machine and the synchronization table is shifted, or an emergency stop signal output during an emergency stop.

As described above, in the present invention, the drive source of the synchronous packaging processing apparatus is provided separately from the main driving source of the packaging machine, and the packaging processing member located below the retracted position is moved up to the retracted position based on a predetermined signal. Since it is held at this retracted position, a sufficient work space can be secured between the gripper and the packaging processing member, and workability during cleaning, maintenance, etc. is improved as compared with the conventional case.
In addition, since the drive source of the synchronous packaging processing apparatus is provided separately from the main drive source of the packaging machine, the table and the synchronous table are synchronized. The packaging processing member that is positioned below the retracted position based on the abnormal signal or that passes through the retracted position and tries to move downward is retained at the retracted position, thereby avoiding interference between the gripper and the packaging processing member. Can be prevented in advance.
Furthermore, if the bag mouth of the bag used for packaging is not properly opened, the packaging processing member that attempts to move downward through the retracted position is received on the way based on the signal that is detected, and the retracted position is received. It is possible to prevent the packaging opening member from being caught in the bag opening opened halfway and being damaged and damaging the bag opening.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of an intermittent rotary type rotary bag filling and packaging machine using a package filling device according to an embodiment of the present invention. It is a typical side sectional view of a bag packing machine. It is an expanded view which shows a part of cylindrical cam and an auxiliary cam. It is explanatory drawing which shows a part of filling process of a to-be-packaged object. It is explanatory drawing which shows the remainder of the filling process of a to-be-packaged object. It is a flowchart of control by a control apparatus.

There are various types of synchronized packaging processing apparatuses according to the present invention as described above. In the following description, an elevating-type packaged article filling apparatus equipped with a hopper will be described as an example. Hereinafter, description will be given with reference to the drawings. FIG. 1 is a schematic overall perspective view of a bag filling and packaging machine 1 using an apparatus for filling an article according to an embodiment of the present invention. Referring to FIG. 1, a bag filling and packaging machine 1 (hereinafter simply referred to as “packaging machine”). The detailed configuration of the known configuration will be omitted.

This packaging machine 1 is an intermittent rotation type rotary bag filling and packaging machine, and includes a rotary table 2 (hereinafter simply referred to as “table”) that rotates intermittently in the direction of the arrow in the figure. A plurality of sets of left and right grippers 3, 3 are provided at predetermined intervals. Reference numeral 4 denotes a hopper as a packaging processing member, which is supplied with a package from a package supply device 25 described later, and fills the bag B with the package as described later. A plurality of hoppers 4, that is, one each corresponding to the respective grippers 3, 3 are provided, and are positioned above the grippers 3, 3, respectively. Each hopper 4 is movable up and down as will be described later, and as the table 2 rotates, this also moves up and down between a rising end and a lowering end by a cylindrical cam 63 described later. ing. The hopper 4 includes a hopper body 5 that is open at the top and bottom, and a so-called shed 6 that can be opened and closed located below the hopper body 5 (see FIGS. 2 and 4). The shed 6 is composed of two shed pieces 7, 7 that can rotate around the support shafts 8, 8, respectively, and the tip can be opened and closed (see FIG. 4). The opening and closing of the shed 6 is controlled by the control device 32 as will be described later.

As is known, in the packaging machine 1, various packaging processes are performed at each station where the table 2 stops or while moving between stations. In station I, a known conveyor magazine 11 is arranged, and a pair of suction cups 12 and 12 are used to sequentially deliver bags B one by one to grippers 3 and 3 stopped at this station. The supply of the bag B to the grippers 3 and 3 is controlled by the control device 32 as will be described later, and the bag supply may be stopped.

In the station II, the date of manufacture is printed on the bag B using the printer 13, and the printing is inspected by the inspection device 14 in the station III. In the station IV, the bag mouth of the bag B is opened using a pair of suction cups 15 and 15 connected to a vacuum source (not shown). With the opening, the left and right grippers 3, 3 approach each other by a predetermined distance, and maintain the opened bag mouth in that state. In this embodiment, a so-called self-supporting bag is used as the bag B and is not shown in FIG. 1, but the lower part of the bag B can be expanded using another pair of suction cups 16 and 16. (See FIG. 4A (d)). The pipes 17 and 17 that connect the suction cups 15, 15, 16, and 16 to the vacuum source are provided with vacuum sensors 18 and 18 that detect whether the suction is properly performed and the bag mouth is opened as desired. (See FIG. 4A (d)).

At the station V, the front end side of the jar 6 of the hopper 4 is inserted into the bag B, the jar 6 is opened, and the bag B is filled with the article to be packaged supplied to the hopper 4 at the station VIII described later. Further, a tapping member 19 of a known tapping device is provided below the bag B so as to be movable up and down, and the bottom of the bag B is lightly tapped to help the packed object to be moved toward the bag bottom. (See FIG. 4A (e)). Station VI is also a filling process. That is, in this embodiment, the filling of the article to be packaged in the hopper 4 is performed not only while the bag B is stopped at the station V, but also during the movement from the station V to the station VI, and also during the stop at the station VI. Also done. The station VI is also provided with a tapping member 19 (see FIG. 4B (f)).

At station VII, the throat 6 of the hopper 4 is pulled out from the bag B and closed, and the left and right grippers 3 and 3 move away from each other, and the bag mouth of the bag B is tensioned. This station is also provided with a tapping member 19. In station VIII, the bag mouth of the bag B is sandwiched between a pair of inspection blocks 21 and 21, and the interval between these blocks 21 and 21 detects whether or not an object to be packaged is attached to the planned seal portion on the inner surface of the bag mouth. To do. In addition, in this station, the package object is supplied to the hopper 4 from the package object supply device 25 indicated by a two-dot chain line.

In the station IX, the bag mouth is sealed using a pair of hot plates 27 and 27. Also, defective bags such as defective printing are discharged onto a chute (not shown). Further, the station IX is provided with a sensor 80 for detecting whether or not an object to be packaged exists in the hopper 4 (see FIG. 4B (R)). The sensor 80 includes a light emitting element 81 and a light receiving element 82. Further, the hopper 4 is provided with a notch (not shown) at a portion facing the light emitting element 81 and the light receiving element 82. Next, at the station X, the bag mouth is cooled using a pair of cooling plates 29, 29, and then the left and right grippers 3, 3 are opened to discharge the bag B onto the chute 31.

Next, with reference to FIG. 2, an elevating-type packaged filling device (hereinafter simply referred to as “filling device”) 100 as an elevating-type packaging processing device will be described. As described above, the filling device 100 includes the hopper 4 as a lifting and lowering packaging processing member. In the present embodiment, the hopper 4 moves up and down between the highest rising end position and the lowest lowering end position. ing. FIG. 2 is a side sectional view schematically showing the packaging machine 1. In the figure, reference numeral 41 denotes a pedestal of the packaging machine 1. A support 42 is provided on the pedestal 41, extends up and down in the support 42, and is connected to a main drive source (not shown) to be rotated intermittently (see FIG. The above-mentioned table 2 is attached to the upper end of (not shown) and rotates intermittently. A plurality of sets of left and right grippers 3 and 3 are attached to the table 2 as described above. In the figure, two sets of grippers 3 and 3 and a hopper 4 are shown. The left side in the figure is the grippers 3 and 3 and the hopper 4 at the station V in FIG. 1, and the hopper 4 is lowered by a cylindrical cam 63 described later. The right side shows the grippers 3 and 3 and the hopper 4 in the station I, and the hopper 4 is located at the rising end position.

  Reference numeral 43 is a support frame of the filling device 100 and is provided on the gantry 41. A holding case 45 whose upper side is open is attached to the central portion of the top plate portion 44 in a suspended state. An upper cover 46 is attached to the inner surface side of the bottom of the holding case 45, a lower cover 47 is attached to the outer surface side, and a drive motor 48 is attached to the upper cover 46. A tuning table 49 is disposed on the lower side of the lower cover 47 so as to be positioned above the grippers 3 and 3, and its shaft extends into the upper cover 46 through the lower cover 47. It is connected to 48 output shafts by an appropriate connecting device. That is, the tuning table 49 is driven by a drive source that drives the lower table 2, that is, a drive source different from the main drive source of the packaging machine 1. The drive motor 48 is adapted to intermittently rotate the tuning table 49 in the same direction in synchronization with the table 2.

  The hopper 4 includes a hopper body 5 that is open at the top and bottom, as described above, and a so-called throat 6 that is disposed below the hopper body 5. In the figure, the shed 6 of the hopper 4 on the right side is closed and that on the left side is open. Reference numeral 51 is a guide shaft erected on the tuning table 49 at a position corresponding to the grippers 3 and 3 in the circumferential direction, and a slider 53 is fitted on the guide shaft 51 so as to be movable up and down. The hopper body 5 is attached to the first attachment portion 56 of the attachment member 55 attached to the slider 53, and the shed 6 is attached to the second attachment portion 57 with the same axial center as shown in the figure. A cam roller 59 is attached to the slider 53 and rolls on a cylindrical cam 63 attached to the inner surface side of the top plate 44 of the support frame 43 via a cam attachment member 61 so that the hopper 4 moves up and down. It has become. That is, the cylindrical cam 63 is attached so as to surround the holding case 45, and the shape thereof is provided with upper and lower flat portions and inclined portions connecting them as shown in FIG. . When the cam roller 59 is located between the stations I to III and between the stations VIII and X to I, the hopper 4 is located at the rising end position, and when located between the stations V and VI and between them, the hopper 4 is lowered. It is located at the end position, and is located between the rising end position and the falling end position in the stations IV and VII.

Next, the auxiliary cam 71 as a restricting means for restricting the hopper 4 from being lowered to the lowered end position will be described with reference to FIG. As described above, the opening of the bag B is performed at the station IV. However, if the suction cups 15, 15, 16, and 16 are not properly sucked, a vacuum leak occurs and the opening as desired is not performed. Even if the hopper 4 is moved down and the hopper 4 is lowered, it is not only possible to properly fill the package, but the bag may be damaged. In such a case, the auxiliary cam 71 in the shape of a plate prevents the hopper 4 from moving to the lower end position at the station V and retreats to the retracted position, so that the mouth 6 of the hopper 4 does not contact the bag B. It is what you want to do. That is, when the opening defect is detected by the sensors 18 and 18 as described above, the shed 6 of the hopper 4 can be kept closed by the control device 32, but as described above, the hopper 4 is moved up and down by the cylindrical cam. In such a case, the auxiliary cam 71 may be used since the bag may be damaged by, for example, the bag 6 of the hopper 4 having moved to the lower end position entering the bag opening opened halfway. To retreat to the retreat position. Since the station VI is also a filling station, the same auxiliary cam 71 is provided in this station.

As shown in the left part of FIG. 2, the cam mounting member 61 provided at the stations V and VI among the cam mounting members 61 to which the cylindrical cam 63 is mounted is different from the mounting members 61 of other stations and extends vertically. A shaft 62 is provided, and the auxiliary cam 71 is attached to a slider 73 fitted to the guide shaft 62 so as to be movable up and down. In the illustrated standby position, the auxiliary cam 71 is flush with or below the cam surface of the cylindrical cam 63. Is located. As shown in the drawing, the width of the cam roller 59 is larger than the width of the cylindrical cam 63, and the cam roller 59 can ride on the auxiliary cam 71 at the protruding portion. As shown in FIG. 3, the auxiliary cam 71 is hung on the other end side of two tension springs 75 having one end hung on a fixed mounting member 74. An air cylinder 76 attached to the attachment member 74 is disposed between the two springs 75, the tip of the rod 77 abuts against the auxiliary cam 71, and normally the rod 77 extends and the auxiliary cam 71 is pushed down. Thus, the cam roller 59 rolls on the cam surface of the cylindrical cam 63 (see station VI in FIG. 3). However, when the opening of the bag mouth of the bag B is not properly performed as described above, the rod 77 is contracted at a predetermined timing, and the auxiliary cam 71 is moved to the operating position above the standby position, and the station The cam roller 59 that moves on the slope on the lower side of the cylindrical cam 63 from IV is received. As a result, as shown by a thin line in FIG. The cam roller 59 located at the station VI in FIG. 3 is the cam roller of the hopper 4 corresponding to the bag B in which the opening of the bag mouth is appropriately performed, and the auxiliary cam 71 remains lowered to the standby position, It rides on the cam surface of the cylindrical cam 63. Next, when the cam roller 59 in the station V moves to the station VI, the auxiliary cam 71 of the station VI rises from the standby position to the operating position at a predetermined timing, and receives the moving cam roller 59. On the other hand, the auxiliary cam 71 of the station V has a timing that does not hinder the movement of the cam roller 59 when the bag opening of the bag B corresponding to the hopper 4 located at the station IV is appropriately opened. The rod 77 is extended and lowered to the standby position.

Next, with reference to FIGS. 4A and 4B, the operation at each station and the operation while moving between stations will be described in more detail. FIG. 4 is an explanatory diagram showing a process at each station shown in FIG. (A) to (E) in FIG. 4A correspond to the stations I to V in FIG. 1, and (F) to (N) in FIG. 4B correspond to the stations VI to X, respectively. A hopper 4 and a bag B and grippers 3 and 3 are shown on the lower side. 4A (A) and 4B (G) to (L), only the hopper 4 is shown in cross section, and in FIGS. 4A (E) and 4B (F), the hopper 4 and the bag B are shown in cross section. .

4A corresponds to the station I in FIG. 1 as described above. As shown in the figure, the bag B supplied from the conveyor magazine 11 is gripped at both side edges by the left and right grippers 3 and 3, held in a suspended state, and the bag mouth is closed. On the other hand, the wrapping material supplied from the wrapping material supply apparatus 25 in FIG. 4B (h) (station VIII) described later is stored in the hopper 4. Of course, the shed 6 is closed. If it is detected at station IX, which will be described later, that the wrapping material that should have been supplied to hopper 4 at station VIII is not present in hopper 4 at station I in FIG. Then, the supply of the bag B to the grippers 3 and 3 corresponding to the hopper 4 is not performed.

After stopping for a predetermined time, the table 2 and the tuning table 49 are rotated in synchronism with a predetermined angle and stopped at the station II (FIG. 4A (B). Here, as described above, the date of manufacture is printed on the bag B. Next, the station moves to the station III (FIG. 4A (c)), where the printing is inspected.When the movement from the station III to the station IV is started, the cam surface of the cylindrical cam 63 faces downward. 3 (see FIG. 3), the hopper 4 starts to descend, and when it stops at the station IV, the opening process of the bag B by the suction cups 15, 15, 16, 16 is performed. The pipes 17 are connected to each other by vacuum sensors 18 and 18 as second sensors provided in the middle of the pipes 17 and 17 at a predetermined timing. 17 is detected and a signal is sent to the control device 32 to determine whether the bag mouth has been opened normally or not. B has not been reached (see FIG. 4A (d)).

  Next, rotation is resumed toward the station V, but before that, the suction cups 15, 15, 16, and 16 stop adsorbing to the bag B and leave the bag B. The grippers 3 and 3 keep the bag mouth open while keeping close. When the table 2 and the tuning table 49 rotate, the hopper 4 further descends, the cam roller 59 reaches the lowest point of the cylindrical cam 63, and the hopper 4 stops at the lower end position. When the table 2 or the like stops, the tip of the shed 6 has entered the bag B. Then, the throat 6 is opened by the control device 32, and filling of the bag B with the article to be packaged is started. As described above, the tapping member 19 performs tapping on the bag bottom. On the other hand, as described above, when the opening of the bag B is not properly performed at the station IV, the auxiliary cam 71 rises from the standby position to the operating position at a predetermined timing, and the moving cam roller 59 is halfway. From the cam surface of the cylindrical cam 63 onto the auxiliary cam 71 and stopped, and the hopper 4 is held in the retracted position. In this case, as described above, the control device 32 keeps the shed 6 of the hopper 4 closed.

  Next, the station VI moves to the station VI. As described above, the filling operation is continued during the movement and the station VI is stopped. Tapping by the tapping member 19 is also performed at the station VI. The filling ends while stopping at station VI. If the opening of the bag opening of the bag B is not properly performed, the auxiliary cam 71 of the station VI rises from the standby position to the operating position at a predetermined timing and moves from the auxiliary cam 71 of the station V. The incoming cam roller 59 is received and the hopper 4 is held in the retracted position. On the other hand, the auxiliary cam 71 of the station V is pushed down to a standby position at a timing that does not interfere with the cam roller 59 that is to roll on the cylindrical cam 63 and move to the station V. However, if the bag corresponding to the next cam roller is also defective in opening, it remains in the operating position, and the corresponding hopper 4 is held in the retracted position.

  When the movement from the station VI toward the station VII is started, the cam roller 59 moves on the slope inclined upward of the cylindrical cam 63, and the hopper 4 starts to rise. And when stopping at the station VII, the shed 6 of the hopper 4 has already come out of the bag B, and the shed 6 is closed. When the spout 6 comes out of the bag B, the left and right grippers 3 and 3 move away from each other at a predetermined timing, and the bag mouth of the bag B is tensioned. Note that tapping by the tapping member 19 is also performed in the station VII.

  Next, it moves toward the station VIII. At this time, the cam roller 59 further moves on the inclined surface inclined upward of the cylindrical cam 63 to reach the flat portion, and stops at the station VIII. The hopper 4 reaches the rising end position. During the stop, the bag mouth is sandwiched between the pair of blocks 21 and 21 described above, and it is detected whether an object to be packaged adheres (bites) to a portion to be sealed of the bag mouth. On the other hand, a predetermined amount of articles to be packaged is supplied from the article supply device 25 to the hopper 4 in which the shed 6 is closed.

Then move to station IX. Here, as described above, the bag mouth is sealed using the pair of hot plates 27. In addition, when a defect occurs in the packaging process performed up to this point (for example, defective printing, an unsealed bag due to biting of an object to be packaged, etc.), the defective bag is discharged here. Further, when the station is stopped, the presence or absence of an object to be packaged in the hopper 4 is detected by the first sensor 80 including the light emitting element 81 and the light receiving element 82 shown in FIG. In other words, the package supply device 25 supplies a certain amount of packaged items, and is equipped with a measuring instrument or the like for that purpose, so that it takes time to measure and supplies the hopper 4 to the station VIII while it is stopped. As a result, there is a possibility that the hopper 4 moves to the station IX without the packaged material being supplied to the hopper 4 as a result. Therefore, at this station, the presence / absence of an object to be packaged in the hopper 4 is detected. If the object to be packaged does not exist, when the hopper 4 moves to the station I, the corresponding grippers 3, 3 are detected. The supply of the bag B to the bag is stopped, the empty bag is moved, the useless packaging process after the bag supply process is stopped, and the production loss is prevented.

Next, it moves to the last station X, a seal part is cooled with a pair of cooling plates 29 and 29, grippers 3 and 3 are opened, and bag B (product) is discharged to chute 31. Then, the grippers 3 and 3 are closed to move to the station I again.

Finally, a flowchart of control using the second sensors 18 and 18 and the first sensor 80 will be described. In step I, a package supply command is issued in step 2, and the supply of the package to the hopper 4 is performed in the station VIII. Next, in step 3, the first sensor 80 detects the article to be packaged in the hopper 4. If the package is not detected, the process returns to step 2. Since the bag supply permission command is not issued, even if the hopper 4 moves to the station I, the bag B is not supplied to the grippers 3 and 3 corresponding thereto.

When the presence of an article to be packaged is detected in step 3, a bag supply permission command is issued in step 4, and when this hopper 4 moves to station I, the bag B is supplied from the magazine 11 to the corresponding grippers 3, 3. Next, in step 5, the opening inspection of the bag B by the second sensors 18, 18 is performed. When the bag mouth is properly opened, a spout opening command is issued at step 6, the spout 6 is opened at station V, and the bag is filled with an article to be packaged. Next, a closing instruction is issued at step 7, and the closing opening 6 is closed at station VII. Then, the process returns to step 4. On the other hand, if the opening failure of the bag mouth is detected, the process proceeds to step 8 where a hopper non-insertion command, a bag mouth seal stop command, and a defective bag discharge command are issued, and the bag B is discharged at the station IX and returns to step 2. . Since the hopper non-insertion command is issued at step 8, the above-described auxiliary cam 71 operates, and at stations V and VI, the hopper 4 is stopped at the retracted position between the rising end position and the falling end position, and the shed 6 is closed. Will remain.

As described above, in the present embodiment, when the opening of the bag mouth is not properly performed, the auxiliary cam is operated in the package filling process to prevent the hopper from moving to the descending end position and to retreat. Hold in place to prevent the hopper from contacting the bag. Thereby, damage to the bag can be prevented.

If a defective opening of the bag B is detected, in the above-described embodiment, the object to be packaged in the hopper 4 is carried around as it is by the hopper 4, and the next supply of the object to be packaged from the packaged object supply device 25 is performed at the station VIII. Is canceled and the defective opening bag is discharged at the station IX. However, it is also possible to open the shed 6 at the station V and discharge the package in the hopper 4 to the outside through the chute, for example, and then discharge the bag with the defective opening to the outside at the station IX. Alternatively, the jar 6 is opened at the station V and the packaged item in the hopper 4 is discharged out of the machine through, for example, a chute, while the bag B that has been poorly opened is held and carried around, and the corresponding grippers 3, 3 The next supply of the bag B may be canceled, and the opening of the bag mouth may be attempted again for the bag B that has previously failed to open. Furthermore, the article to be packaged in the hopper 4 and the bag B with poor opening are carried around as they are, and the supply of the article to be packaged from the article supply device 25 and the next supply of the bag B to the corresponding grippers 3 and 3 are cancelled. Then, the opening of the bag mouth may be attempted again for the bag B that has been defective in opening the previous time, and the packaged items carried around in the opened bag B may be filled.

  In the embodiment of the present invention, the auxiliary cam 71 as a restricting means for restricting the lowering of the hopper 4 is provided not only when the opening of the bag mouth is not properly performed but also in the following cases. Operate and retract the hopper 4 to the retracted position.

First, the packaging machine 1 is cleaned and maintained. That is, the hopper 4 is retracted to the retracted position in both the stations V and VI by a maintenance / inspection start signal output when performing maintenance / inspection of the packaging machine 1. That is, when the packaging machine 1 is stopped, even if the hopper 4 is located at a position lower than the retracted position at the stations V and VI, the auxiliary cam 71 is moved from the standby position to the operating position, and the stations V and VI are moved to the station V and VI. The positioned hopper 4 is retracted to the retracted position. As a result, a sufficient free space can be secured between the hopper 4 and the gripper 3, and operations such as cleaning and maintenance can be easily performed, and work efficiency is increased.

  Also, when the main power supply of the packaging machine 1 is turned off, the auxiliary cam 71 is also moved from the standby position to the operating position, and the hopper 4 located at the stations V and VI is retracted to the retracted position. That is, in this embodiment, the air cylinder 76 is used to operate the auxiliary cam 71, and the auxiliary cam 71 is moved between the standby position and the operating position by the expansion and contraction of the rod 77. The operation is controlled by a known solenoid valve, for example. When the main power supply of the packaging machine 1 is turned off, the solenoid valve is turned off, and the rod 77 of the air cylinder 76 is contracted. That is, the air cylinder is operated by a shutdown signal generated when the main power is turned off.

Next, there is a case where a synchronization shift occurs between the gripper 3 side and the hopper 4 side, that is, between the packaging machine 1 and the filling device 100. As described above, in the present embodiment, the drive source of the filling device 100 is provided separately from the main drive source of the packaging device 1 and the table 2 and the synchronization table 49 are synchronized. However, for example, cleaning or maintenance is performed. When this is done, the synchronization may be lost for some reason. In this case, the relative positional relationship in the circumferential direction set between the gripper 3 and the hopper 4 is distorted. When the packaging machine 1 is operated as it is, the gripper 3 and the hopper 4 interfere with each other. There is a possibility of damaging the member. In such a case, an encoder or the like detects an error in the relative positional relationship and transmits an abnormality signal. Based on the signal, the auxiliary cam 71 is immediately moved to the operating position to retract the hopper 4 to the retracted position. 3 and the hopper 4 are avoided, and damage to these members is prevented. Further, similar measures are taken based on an emergency stop signal output at the time of emergency stop.

  The retreat position of the hopper 4 is determined as follows. First, the retracted position is set so that the lowermost end portion of the packaging processing member, in the above embodiment, the hopper 4 is higher than the uppermost end portion of the gripper. Thereby, interference with a gripper and a hopper can be avoided reliably, and workability | operativity at the time of a maintenance etc. improves. Furthermore, it is desirable that the lowermost end portion of the hopper 4 is set higher than the upper edge portion of the bag held by the gripper. Thereby, when opening of the bag mouth mentioned above is not performed appropriately, a bag is not damaged by a hopper.

  In the present invention, in addition to the configuration described in the above embodiment, as the lifting means, each packaging processing member is provided with an independent servo motor, and each servo motor is controlled by the control means based on a predetermined signal, The packaging processing member positioned below the retracted position can be moved upward to the retracted position, or the packaging processing member passing through the retracted position and moving downward can be fastened and held at the retracted position.

Claims (8)

Intermittent with a plurality of sets of grippers that intermittently move on a predetermined circular orbit, holding both side edges of the bag by the grippers, holding the bag in a suspended state, and performing various packaging processes while transferring within a predetermined range In the packaging processing equipment used for the rotary rotary bagging and packaging machine,
A tuning table disposed above the gripper, driven by a drive source independent of the main drive source of the packaging machine, and intermittently rotating in synchronization with the packaging machine;
A plurality of the same packaging processing members that are provided along the circumferential direction on the tuning table so as to correspond to the plurality of sets of grippers, and that can be raised and lowered, respectively.
Elevating means for elevating and lowering the packaging processing member between the rising end position and the falling end position;
Based on a predetermined signal, the packaging processing member positioned below the retracted position is moved upward to the retracted position, or the packaging treatment member that attempts to move downward through the retracted position is fastened and held at the retracted position. Control means,
The retracted position is set to a position where the lowermost end of the packaging processing member is higher than the uppermost end of the gripper,
The packaging processing apparatus characterized by the above-mentioned.   2. The packaging processing apparatus according to claim 1, wherein the retracted position is set such that a lowermost end portion of the packaging processing member is higher than an upper end edge portion of a bag held by a gripper of the packaging machine. A packaging processing device.   3. The packaging processing apparatus according to claim 1, wherein when there are a plurality of packaging processing members that are at a position lower than the retracted position or that pass through the retracted position and attempt to move downward, the control means performs the predetermined processing. Based on the signal, a part or all of the packaging processing member that is at a position lower than the retracted position or that moves through the retracted position and moves downward is held at the retracted position. Packaging processing equipment.   3. The packaging processing apparatus according to claim 1 or 2, wherein the control means is based on the predetermined signal and is all the packaging processing which is at a position lower than the retracted position or moves downward through the retracted position. A packaging apparatus characterized by holding a member in a retracted position.   3. The packaging processing apparatus according to claim 1, wherein the predetermined signal has a plurality of types, and is located at a position lower than the retraction position or the retraction position based on a part of the plurality of types of signals. When there are a plurality of packaging processing members that pass through and move downward, the control means is selectively placed at a position lower than the retracted position or passes through the retracted position and moves downward. A part or all of the members are held at the retracted position, and the control means is at a position lower than the retracted position or passes through the retracted position and moves downward based on another signal among the plurality of types of signals. A packaging processing apparatus that holds all packaging processing members to be moved in a retracted position.   The packaging processing apparatus according to any one of claims 1 to 5, wherein the elevating means is arranged along a circumferential direction of the tuning table, and the rising end position and the lowering end position with the rotation of the tuning table. The packaging processing apparatus further includes a restricting means movable between a standby position and an operating position, and the control means is based on the predetermined signal. The regulating means is operated from the standby position to the operating position, whereby the packaging processing member positioned below the retracted position is moved up to the retracted position, or moved downward through the retracted position. A packaging processing apparatus, wherein the packaging processing member is received and held in the retracted position.   7. The packaging processing apparatus according to claim 6, wherein a cam roller that rolls on the cam is attached to the packaging processing member, and the restricting means includes an auxiliary cam on which the cam roller can ride, and the auxiliary cam. An urging unit that constantly urges toward the operating position; and an auxiliary cam driving unit that applies a driving force against the urging force of the urging unit to hold the auxiliary cam at the standby position. When the driving force of the auxiliary cam driving means is released based on the signal, the packaging cam moves to the operating position by the auxiliary cam biasing means. The packaging processing apparatus according to any one of claims 1 to 7, wherein the predetermined signal is a maintenance / inspection start signal output when performing maintenance / inspection, a shutdown signal due to a main power-off operation, or a bag mouth It is either an abnormal signal that is output when the opening is not properly performed or when the synchronization between the packaging machine and the tuning table is shifted, or an emergency stop signal that is output during an emergency stop. And packaging processing equipment.

Images