JP2011219138A - Carrying-out chute driving type out-of-system discharging device for vertical bag making, filling and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharging device which can discharge an article outside of a system certainly even if the article is an inferior product with any kind of shape by changing an angle of a carrying-out chute by motor driving in a vertical bag making, filling and packaging machine.SOLUTION: The carrying-out chute 6 is provided directly under a horizontal sealer of the vertical bag making, filling and packaging machine and provided with a position to discharge a normal product and a position to discharge an inferior product, which sort and guide a falling bag 7 to a normal product carrying-out conveyor 22 or an inferior product carrying-out conveyor 23 by changing the angle of the carrying-out chute by motor driving. The position to discharge an inferior product is a position at which an inferior product 10 can fall freely without sliding on the carrying-out chute.

Description

  The present invention relates to a defective product discharge mechanism in a vertical bag making filling and packaging machine.

  Conventionally, as shown in FIG. 15, the packaging film is guided to the former 9, folded so as to wrap the product filling cylinder 2, and aligned on the front side of the former, and then vertically sealed by the longitudinal sealing device 3 or 3 ′ to form the packaging cylinder H. At the same time, the packaging cylinder H is pulled down by the film feeding device 4 provided on the side surface of the product filling cylinder and is hung down below the product filling cylinder 2 and then laterally sealed by the lateral seal (end seal) cutter device 5. 2. Description of the Related Art A vertical bag making and filling machine configured to cut a packaging tube H and discharge a finished product J is known.

  The horizontal sealing method in the above-described vertical bag making and filling machine is an intermittent type in which the lowering of the packaging cylinder is temporarily stopped at the time of horizontal sealing as disclosed in JP-A-10-203502, and JP-A-10-297619. It is known that there is a continuous type that performs horizontal sealing continuously during descent of the packaging cylinder without stopping the lowering of the packaging cylinder even during horizontal sealing, as shown in Japanese Laid-open Patent Publication.

  Since the continuous type has no temporary stop time for horizontal sealing, there is no waste of time and efficient bag-making operation can be performed. However, since the horizontal seal is performed during the lowering operation of the packaging cylinder, the accuracy is poor, and there is a drawback that the horizontal seal is less reliable than the intermittent type. On the other hand, the intermittent type has a disadvantage that the time for one cycle is longer because the time required for the temporary stop is longer than the continuous type for the horizontal seal, but the horizontal seal is firmly performed in the stopped state. There is an advantage that the reliability of the seal is high and a high quality can be obtained.

  As described in Japanese Patent Application Laid-Open No. 2006-117291, Japanese Patent Application Laid-Open No. 10-109739, etc., the conventional defective product discharge of such a vertical bag-filling and packaging machine is transferred to the carry-out conveyor by sliding down the carry-out chute. After that, it was performed on the conveyor. As a discharging method, there are an air jet type, a flipper type, a conveyor damper type and the like. As for the operation, the operation time is determined from the capability of the packaging machine by calculating the movement time from the occurrence of defective products to the discharging device as a trigger.

  In other words, the discharge device is downstream from the packaging machine, and it takes a certain time for the defective product discharged from the packaging machine to reach the discharge position. This is the travel time. “Movement time from occurrence of defective product to said discharge position” means “the time it takes for a defective product to slide down the carry-out chute, transfer to the carry-out conveyor, and reach the discharge position”. If the discharge device is operated after the lapse of the “time” from the occurrence of this, the discharge of defective products will be started.

  In addition, the above “operation time” means that when the defective discharge device starts the discharge operation of the defective product, the operation needs to be finished before the next non-defective product comes. For example, the capacity of the packaging machine is 120 rpm. Since one cycle is 0.5 seconds, the bag passes through the discharge device once every 0.5 seconds. For example, if you start to discharge a defective product that is a two-piece package that will be described later, you must finish the discharge within 1 second and prepare for the next good product. "Time is determined."

  In addition, there is also known a method in which when a defective product is detected, it is discharged as a bundle and removed by hand on a conveyor (Japanese Patent Laid-Open No. 2007-223671).

  Such defective products include single packages / continuous packaging of empty bags, continuous packaging when biting, continuous packaging where lateral sealing is not performed when overfilled, etc. Since the weight and frictional resistance are different, the time required to slide down the carry-out chute is slightly different. For this reason, certainty of the discharging operation was lacking. In particular, when the capacity of the packaging machine is high, the instability increases because the operation time is short.

  Further, in the case of the conveyor damper type shown in FIG. 7, the damper conveyor 31 is kept so that the chute 33 and the conveyor 32 are continuous so that the conveyor flows in the normal state as shown in FIG. As shown in FIG. 6, when the delivery of the defective product is delayed, the end portion 31 of the transport damper is bent downward, and the defective product is dropped to drop downward. As shown in FIG. 6, the damper portion (35, 36) The product 34 may be caught in the product, and the bag may be ruptured, the packaged items may be scattered, and the line operation must be temporarily stopped.

  The damper conveyor is a damper type defective product discharge conveyor that discharges defective products, and is composed of damper portions indicated by reference numerals 35 and 36.

  In the normal product transport state, the transport surfaces of the two damper parts are kept straight, and when the defective product is discharged, the 35 damper parts swing downward about the upstream end and the 36 dampers are By swinging upward with the downstream end as the center of rotation, a space is created for dropping defective products down the conveyor. The opening of the space by swinging the damper of the conveyor upward or downward is referred to as a damper operation.

  In recent years, packaging machines have been required to operate at high speed, automated lines, high availability, and reliably discharge defective products. Therefore, it is desired to provide a discharge device that can reliably discharge any defective product out of the system during high-speed operation of the packaging machine in a space-saving, low-cost and simple form.

JP-A-10-203502 JP 10-297619 A JP 2006-117291 A Japanese Patent Laid-Open No. 10-109739 JP 2007-223671 A

  This invention relates to a vertical bag making filling and packaging machine, in which a packaging chute is provided by changing the angle of the carry-out chute of the vertical bag making filling and packaging machine by driving a motor, thereby providing a non-defective product discharge position and a defective product outside discharge position. It is an object of the present invention to provide a discharge device that can surely discharge any defective product in any form during high-speed operation in a space-saving, low-cost and simple form.

  The present invention provides a carry-out chute located directly under a horizontal sealer of a vertical bag making filling and packaging machine, and changing the angle of the carry-out chute by a motor drive to drop a bag into a good carry-out conveyor or a defective carry-out conveyor. A non-defective product unloading position for sorting and guiding and a non-defective product discharge position are provided.

  The mounting angle of the carry-out chute is movable, and the non-defective product discharge position and the defective product outside discharge position are switched by driving the motor. The defective product discharge position is a position where the defective product can fall freely without slipping on the carry-out chute. .

  That is, the carry-out chute driven system discharge device according to the present invention forms a packaging cylinder by vertically sealing both edges of the packaging film, and the film is lowered by the film feeding device to form a packaging seal.・ Seal) Horizontally seals the upper side of the article to be packaged filled in the packaging cylinder by the cutting device and the lower part of the article to be packaged to be dropped and filled next, and cuts the middle part of the seal to cut the article. In a vertical bag making and filling machine for forming a package, a drive-type outside carry-out chute is provided at the dropping position of the article to be wrapped below the packaging cylinder, and when the defective product is detected, the carry-out chute is driven to rotate It is characterized by discharging defective products out of the system.

  Further, the chute is connected to a non-defective product carrying conveyor during normal operation with its mounting angle being movable, and in the case of defective products, driving to connect to the defective product carrying conveyor is performed, or the carrying chute is the horizontal seal It is provided directly under the apparatus and has a structure in which when a defective product is discharged, the defective product freely falls directly below without slipping on the carry-out chute. The defective product detection signal may be a defective product discharge signal of a packaging machine control unit or a cutter output of an article to be packaged. The rotational drive of the carry-out chute couples a servo motor, a fulcrum attached eccentrically to the rotation shaft of the servo motor, and a tip of a swing lever integrated with the fulcrum and the carry-out chute. It is performed by a crank mechanism comprising a connecting rod.

  There is no time difference because defective products are discharged without slipping on the carry-out chute. Thereby, even when the packaging machine operates at high speed, defective products are reliably discharged. Moreover, even if the defective bag is stuck on the horizontal sealer and falls a little, the defective product will not be squeezed and ruptured, and there will be no major trouble that temporarily stops the line. Since the above carry-out chute is located directly under the horizontal sealer of the vertical pillow packaging machine, there is no need for a separate device for sorting non-defective / defective products on the conveyor, the entire device is compact, and the system configuration is simple become.

It is a cross-sectional view of the discharge | emission chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is a figure which shows the non-defective product discharge | emission operation | movement of the carry-out chute drive type | formula external discharge apparatus of the vertical bag making filling packaging machine of this invention in FIG. It is a figure which shows the defective product discharge operation | movement of the carry-out chute drive type | formula external discharge apparatus of the vertical bag making filling packaging machine of this invention in FIG. It is detailed sectional drawing of the carrying-out chute drive type system outside discharge apparatus of the vertical type bag making filling packaging machine of this invention in FIG. It is a perspective view which shows the non-defective product / defective product discharge operation of the carry-out chute drive type outside discharge device of the vertical bag making filling packaging machine of the present invention in FIG. It is a perspective view which shows the failure at the time of the defective article discharge | emission operation | movement of the out-of-system discharge apparatus of the conventional vertical bag making filling packaging machine. It is a cross-sectional view of the non-defective / defective product discharge operation of the extra-system discharge device of the conventional vertical bag making filling and packaging machine. It is a cross-sectional view of the non-defective product discharge operation of the outside discharge device of the conventional vertical bag making filling and packaging machine. It is a cross-sectional view of defective product discharge operation of the extra-system discharge device of the conventional vertical bag making filling and packaging machine. It is a figure which shows the operation | movement mechanism of the chute | shoot of the carry-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is a figure which shows the operation circuit of the carrying-out chute of the carrying-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is a figure which shows the operation | movement timing in the normal driving | operation of the carrying-out chute of the carrying-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is a figure which shows the operation | movement timing at the time of the empty bag of the carry-out chute of the carry-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is FIG. (1) which shows the flowchart of each operation | movement of the carrying-out chute of the carrying-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is FIG. (2) which shows the flowchart of each operation | movement of the carrying-out chute of the carrying-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is FIG. (3) which shows the flowchart of each operation | movement of the carrying-out chute of the carrying-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is FIG. (4) which shows the flowchart of each operation | movement of the carrying-out chute of the carrying-out chute drive type outside discharge apparatus of the vertical bag making filling packaging machine of this invention. It is a figure which shows the whole general | schematic vertical bag making filling packaging machine structure.

  FIG. 1 shows a structure below a horizontal sealer 21 of a vertical bag making and filling machine 1 of the present invention. Reference numeral 7 denotes an article to be packaged in a state where it is sealed with two horizontal sealers 21 and cut. The packaged object naturally falls after being cut and falls onto the carry-out chute 6. As shown in FIG. 2, in the normal operation, the non-defective product 11 is conveyed on the conveyor 22 via the carry-out chute 6 and appropriately stored in a shipping box.

  If any defect occurs in the packaging operation, a detection signal in the case of a defective product is separately sent from the control device of the packaging machine, and when this signal is generated, the carry-out chute 6 is set in accordance with the drop timing of the defective product. As shown in FIG. 3, when the carrying chute rotates in a vertical state and the carry-out chute is in this state, the defective product naturally falls without touching the carry-out chute 6, falls onto the lower chute 25, and the defective product carry-out conveyor 23 Is taken out to a defective product collection box. Although not shown, the collection box may be placed at the tip of the short conveyor 23.

  FIG. 4 is a detailed cross-sectional view showing the rotation mechanism of the carry-out chute 6. In FIG. 4, reference numeral 26 denotes a crank mechanism serving as a rotation mechanism for the carry-out chute 6, and the detailed operation thereof is shown in FIG.

  In FIG. 10, one end of the crank 44 is fixed to the rotating shaft 45 of the servo motor 46, and the other end is connected to the connecting rod 41, and the rotation is controlled by the servo motor 46. A tip 43 of the connecting rod 41 and a fulcrum (fixed shaft) 42 to which the chute 6 is integrally fixed are coupled by a swing lever 47. In this way, when the crank 44 is rotated by the servo motor 46, the tip 43 of the connecting rod 41 moves up and down, and the direction in which the carry-out chute 6 faces changes accordingly. FIG. 10C shows the position of the carry-out chute 6 when discharging the normal good product in FIG. 2, and FIG. 10A shows the position of the carry-out chute 6 when discharging the defective product in FIG.

  As described above, in the case of FIG. 10A, the packaged item (defective product) has a structure that naturally falls without contacting the carry-out chute 6.

  The above-mentioned defective product detection signals include lateral sealer stop, registration mark error, knife stop, biting signal, foreign matter detection signal (for example, metal detector), empty bag single package / multiple package, combination weighing instrument There are detection signals such as bad packaging, continuous packaging when lateral sealing is not carried out at the time of biting, and these are signals generated in the control device of the packaging machine. Alternatively, the presence or absence of a cutter output signal based on these signals may be used as a detection signal.

  FIG. 11 shows an example of an overall view of the control system. When various signals are generated from the packaging machine controller 54, the discharge chute controller 56 controls the rotation of the servo amplifier 53 and the servo motor 52 and changes the direction of the carry-out chute 51.

  FIG. 14 shows a flowchart of the control system, FIG. 12 shows a timing chart during normal operation, and FIG. 13 shows a flowchart during empty bag operation.

  FIG. 14A shows a flowchart of the cutter operation under the condition that all defective packaging products are continuously packaged and discharged so that the difference from normal packaging products becomes clear. Thus, it will be described that the presence or absence of the cutter output signal can be used as the detection signal. “Cutter SW ON?” Indicates whether the output SW of the cutter is ON. The output SW of the cutter is the SW on the operation panel of the packaging machine. If this SW is OFF, the cutter will not operate under any conditions. Usually, it is used at the time of test operation, and it is necessary to keep it ON in normal operation. In spite of normal operation, if it is OFF, the cutter does not operate and a continuous bag is manufactured, and a normal bag cannot be manufactured. If the cutter SW is ON, is in operation, is in a normal cycle, and is in the “cutter output ON” timing, the cutter operates. As described above, the presence / absence of a cutter output signal can be used as a detection signal for determining packaging failure during normal operation under the condition that all defective packaging products are continuously discharged.

  In FIG. 14B, the carry-out chute operation is the operation signal ON, the weighing machine is interlocked, and the carry-out chute is performed when the carry-out chute is in the non-defective position. However, if the weighing machine interlock signal is OFF, the carry-out chute is set to the defective product position. The weighing machine interlock signal is a signal indicating that the weighing machine and the packaging machine are in an interlocked state. When in this state, the packaging machine sends a signal to the weighing instrument to drop the product, and the weighing machine responds accordingly. Repeat the operation to drop the product and return the drop completion signal. Therefore, the operation of the packaging machine in a state where the weighing machine interlock signal is OFF means that an empty bag in which no product is filled in the bag is manufactured. An empty bag in which a product is not filled in a bag is handled as a defective product, not a normal product, and the carry-out chute is set at the defective product position.

  FIG. 14C shows the unloading operation at the time of adjusting the packaging machine (at the time of trial operation). If the adjustment in-progress signal is ON, the bottom dead center detection sensor is turned on and the motor is stopped. This shows an operation for determining the current position, that is, an origin return operation. In the present invention, the rotation of the servo motor is controlled to switch the unloading chute between the non-defective product unloading position and the defective product unloading position. At the time of turning on the power, the position of the carry-out chute is indefinite, and it is necessary to return to the origin and determine the position. FIG. 14C shows that this return-to-origin operation is performed simultaneously when the packaging machine performs the adjustment operation. The output during adjustment in the drawing is a signal output from the packaging machine, and is output when a device using a servo motor as a drive source, for example, a horizontal sealer device, is performing an origin return operation. That this signal changes from OFF to ON means that the adjustment operation of the packaging machine has started, and this indicates that the defective product discharge device of the present invention also performs the return to origin at this timing. .

  FIG. 14D shows the carry-out chute operation during the operation of the packaging machine, and the carry-out chute operation is performed when the weighing instrument interlocking signal is ON and the carry-out chute is in the non-defective position by looking at the cutter output at the check timing. When there is no cutter output, the carry-out chute is set at the defective product position.

  In this embodiment, all the defective packaging is discharged continuously so that the difference from the normal packaging becomes clear. It is an example used for.

  FIG. 12 shows a timing chart during normal operation. When the operation is started, the operation signal 61 is turned ON, and as shown in FIG. 14D, when the weighing instrument interlocking signal 62 is ON and the position 63 of the discharge chute is a non-defective position, the discharge chute operation is performed.

  However, if there is a defect detection signal as indicated by 64 in FIG. 12, the position 63 of the carry-out chute is moved to the defective product discharge position in accordance with the drop timing of the packaged article at that time, and cut and discharged as a defective product. . Further, the presence / absence of the cutter output 68 is detected for each packaging cycle. For example, when there is no cutter output, such as 65 and 66, even if there is no defective product detection signal 64, the corresponding packaged object is discharged at the time of the cutter. The position 63 of the carry-out chute is set as a defective product position at the timing (67 and 70 in FIG. 12). As described above, an abnormality may be detected for some reason even if the defect detection signal 64 is not output. In this case, since the cutter output 68 is not output, the cutter output is used as a defective product discharge signal. This is an example. The case 65 is when the cutter SW 69 is OFF, and the case 66 is when the packaging machine controller stops the cutter output and the cutter output 68 is not output due to other reasons.

  FIG. 13 shows a timing chart during empty bag operation (trial operation). In this case, the operation signal is ON, but since the meter interlocking output 72 is OFF, all defective products are discharged. In the test operation, it is confirmed whether or not the bag making operation is correctly performed. For example, various operation confirmations of the packaging machine such as whether or not the cutter output 75 is stopped when the defective discharge signal 74 is turned ON. The thing which performs is included.

  The carry-out chute drive type out-of-system discharge device of the vertical bag making filling and packaging machine according to the present invention uses the control signal of the packaging machine to discharge the defective product directly under the packaging machine and is integrated with the packaging machine. Compared with the conventional method of sorting out defective products after transferring them to the conveyor once as in the past, there is no need for a separate defective / good product sorting device on the conventional carry-out conveyor, simplifying the system. Thus, the required device area can be reduced.

  In addition, compared to the conventional damper type, the unloading chute driven system discharge device of the present invention naturally falls without touching the unloading chute in the case of defective products. There is almost no serious trouble that the package must be scattered and the line operation must be temporarily stopped.

  In this way, the carry-out chute-driven out-of-system discharge device of the present invention is a space-saving, low-cost, simple form discharge that can reliably discharge any type of defective product out of the system during high-speed operation of the packaging machine. A device can be realized. Therefore, the carry-out chute driven system discharge device according to the present invention can realize reliable discharge of defective products with a high-speed operation of the packaging machine and a high-operation rate automated line, which is highly convenient and has industrial applicability. high.

2 Product filling cylinder 3 Vertical seal device 4 Paper feed device 5 Horizontal seal and cutter 6 Sorting chute 9 Former 11 Package (good product)
10 Packaged items (defective products)
21 Side Sealer 22 Conveyor 23 Conveyor 25 Defective Product Unloading Chute 26 Crank Mechanism 31 Damper 32 Conveyor 33 Chute 34 Packaged Items 35 Damper 36 Damper 41 Connecting Rod 44 Crank 46 Servo Motor 47 Swing Lever 51 Unloading Chute Position 54 Packaging Machine Control Unit 55 Bottom dead center confirmation sensor 56 Unloading chute control unit 61 Operation signal 62 Metering device interlocking output 63 Unloading chute position 64 Defect discharge signal 68 Cutter output 72 Metering device interlocking output 73 Unloading chute position 74 Defect discharge signal 75 Cutter output

Claims (5)

A package is formed by vertically sealing both edges of a packaging film to form a packaging cylinder, and the packaging cylinder is lowered by a film feeding device and filled into the packaging cylinder by a lateral seal (end seal) cutting device. In the vertical bag making and filling and packaging machine that forms a package by cutting the middle part of the seal at the time of the upper side and the lower side of the package to be dropped and filled next,
A drive-type outside carry-out chute is provided at the place where the packaged article falls below the packaging cylinder, and when the defective product is detected, the carry-out chute is rotated to discharge the defective product out of the system. Chute drive type external discharge device.   The unloading chute according to claim 1, wherein the unloading chute is connected to a non-defective product unloading conveyor during normal operation, and connected to a non-defective product unloading conveyor when defective. Chute drive type external discharge device.   The discharge chute is provided directly below the lateral sealing device, and when defective products are discharged, the defective products are configured to freely fall directly below the carry chute without slipping. Or the discharge chute drive type | system | group discharge | emission apparatus of 2 description.   The discharge chute drive according to any one of claims 1 to 3, wherein a defective product discharge signal of a packaging machine control unit or a cutter output of an object to be packaged is used as the defective product detection signal. Discharge device outside the system.   The unloading chute is driven by a servo motor, a fulcrum attached eccentrically to the rotation shaft of the servo motor, and a connecting rod that connects the fulcrum and the tip of a swing lever integrated with the unloading chute. The carry-out chute drive type out-of-system discharge device according to any one of claims 1 to 4, wherein the discharge mechanism is a crank mechanism.