JPH0710134A - Sealing state inspecting device for bag packed article - Google Patents

Abstract

PURPOSE: To inspect a sealing function automatically and discharge defective products outside a transporting route by providing a parallel link mechanism to press a detecting conveyor on a product in a bag with a fixed load and a measuring means to measure a distance between the detecting conveyor and the transporting conveyor. CONSTITUTION: A bottom surface of a detecting conveyor 11 presses a product in a bag to a transporting conveyor 10 with a fixed load, and when a distance T between the detecting conveyor 11 and the transporting conveyor 10 is not shortened under a fixed length, an inspection device judges that a packaging is complete without leaking air from inside of a package. Or, when air leaks from inside by a miss-sealing of the package, the inspection device judges that the packaging is miss-sealed because the distance is shortened beyond T. Whether the package sealing if fine or not is judged by measuring a distance H, from a sensor and a distance gouge to a upper surface of the detecting conveyor 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for packing soft-packed products (hereinafter referred to as bag-filled products) packed with snacks, etc. in a corrugated cardboard box or the like, and in particular, packaging prior to the packaging. The present invention relates to a device for inspecting the sealed state of a.

[0002]

2. Description of the Related Art A bag-filled product S to be inspected by the present invention has a vertical seam 41 and a horizontal seam 42 shown in FIG. FIG. 8 shows an example of an apparatus for bagging snacks and the like. A sheet 50 as a packaging material is fused with vertical seams by a fuser 51 to form a cylindrical shape, and after the contents M are put therein, the fuser 52 fuses a horizontal seam. Therefore, the package of the bag-filled product is sealed while being filled with air together with the contents. Further, the lowered bag-filled product S is separated by the cutter 53, slides down the shooter 54, and is conveyed one by one on the conveyor 55 at regular intervals.

In this way, packaging and sealing the inside of the bag-filled product in a state where it is filled with air means that when a large number of bag-filled products are stacked in multiple stages and stored in a corrugated cardboard box for storage and transportation, they are packed in a lower bag. It is essential to protect the contents from being crushed by the upper weight. If the packaging sheet is thick, the air filled inside will not leak to the outside and the function of protecting the contents from external pressure will be maintained for a long period of time. To this end, the vertical seam 41 and the horizontal seam 42 shown in FIG. 7 are sealed. The stopping function must be perfect.

[0004]

Although there have been attempts to automate the inspection of the sealing function of these seam fusion portions, none of them have been put into practical use, and they still rely on manpower for inspection. is the current situation. However, since the sealing function inspection is a monotonous repetitive operation, the inspector's attention cannot be maintained and defective products are easily overlooked.

[0005]

[Means for Solving the Problems] In order to automatically perform a sealing inspection of all the bag-filled products during the transportation process, the bag-filled products are provided in parallel above a transfer conveyor that transports the bag-filled products in one row, and substantially one bag-filled product is provided. A detection conveyor having a length equal to and a lower surface that moves at the same speed in the same direction as the transport surface of the transport conveyor, a sensor that detects that a bagging item has arrived below the detection conveyor, and the detection conveyor. A parallel link mechanism for pressing the bag with a constant load and a means for measuring the distance between the detection conveyor and the transfer conveyor are provided. In addition, a pressure conveyor that is driven at the same speed in the same direction as the detection conveyor at the same distance as the detection conveyor is provided upstream of the detection conveyor. A parallel link mechanism for pressing with a constant load is provided.

[0006]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is a side view of the first embodiment, and FIG. 2 is a plan view of the same. A leveling conveyor 12 is suspended above the transfer conveyor 10 for transferring the bag-filled goods S transferred from the shooter 54 by the conveyor 55 by levers 22 and 22 ', but the levers 22 and 22' are mutually connected. Since they are parallel, they form a parallel link mechanism together with the conveyor 12. Further, a detection conveyer 11 parallel to the conveyer conveyer 10 is suspended above the conveyer conveyer 10 by levers 21 and 21 '. Since the levers 21 and 21' are parallel to each other, the conveyer 11 constitutes a parallel link mechanism. Further, the sprocket wheels 41 and 42 attached to the support shafts of the levers 21 and 22 are rotated by the timing belts 31 and 32 which are interlocked with the output shaft of the rotating device 30, and the detection belts are connected by the timing belts 33 and 34. 11 and the leveling conveyor 12 are rotated simultaneously. Although these conveyors push the bag-filled items by their own weight while keeping the parallel posture, counterweights 25 and 26 are attached to the levers 21 and 22 respectively to adjust the own weight of the conveyor.

The lengths of the conveyors 11 and 12 are almost the same as one bag, and the installation interval is equal to the conveyance pitch of the bag, and the lower surface of each of them is in the same direction as the conveying surface of the conveyor 10 at the same speed. Moving. The sensor 35 detects the arrival of the bagged product immediately below the detection conveyor 11 by light or ultrasonic waves.

Next, the inspection operation will be described with reference to FIG. The sensor 35 detects that the bagged product S has arrived just below the detection conveyor 11. The bagged products that have arrived just below the detection conveyor 11 have already been leveled one pitch before
The left and right postures are adjusted when passing through the gently sloping surface. Then, the lower surface of the detection conveyor 11 presses the bagged product against the transfer surface of the transfer conveyor 10 with a constant load, but if the packaging sealing is complete and the internal air does not leak, the detection conveyor 11
The distance T between the transfer conveyor 10 and the conveyor 10 does not decrease below a certain value. However, if the packaging sealing is defective and the internal air leaks, the distance T is reduced beyond the limit. Therefore, it is determined whether or not the packaging is good by measuring the distance H between the distance meter 36 and the upper surface of the detection conveyor 11 from the reflection time of the light or ultrasonic beam simultaneously with the detection signal of the sensor 35. can do. The defective sealing product ejects compressed air from the discharge nozzle 37 and discharges it outside the conveyance path.

FIG. 4 is a side view of the second embodiment, and FIG. 5 is a plan view of the same. In this embodiment, the pressure conveyor 13 is suspended by levers 23 and 23 'at a distance of 1 pitch upstream of the detection conveyor 11, and the pressure conveyor 13 has a length, a conveyance direction, and a speed with the detection conveyor 11. Similarly, the counter weight 27 driven by the sprocket 43 and having substantially the same mass as the counter weight 25 is attached. Further, on the upstream side of the pressure conveyor 13, three rollers 14 suspended by a lever 24 that freely rotates around a fulcrum 44 hang by its own weight onto the transport surface of the transport conveyor 10. Further on the upstream side, the leveling conveyor 12 is separated from the pressure conveyor 13 by just two pitches, and the leveling conveyor 12 is connected to the levers 22 and 22 '.
The counterweight 2 is driven by the sprocket 42 and driven in the same direction as the detection conveyor 11 at the same speed.
Install the counter weight 26 having almost the same mass as that of No. 5.

Next, the inspection operation of the second embodiment will be described with reference to FIG. When the bagging product S moving on the transport conveyor 10 arrives immediately below the leveling conveyor 12, the leveling conveyor 12 is gently tilted by the signal of the sensor 35 that detects the arrival of the bagging product 3 pitches ahead. The right and left postures can be adjusted when passing the surface. After that, the bagged product S that has passed under the three rollers while moving one pitch is further rectified, and when it arrives just below the pressure conveyor 13, it is pressed by the pressure conveyor 13 that descends by its own weight. To be done. If there is any defect in the packaging of the bag, the internal air will leak and the thickness will decrease. Therefore, if the height H of the detection conveyor 11 that moves down one pitch and arrives just below the detection conveyor 11 is measured by the distance meter 36, whether the thickness T of the bag-filled product S is equal to or greater than a specified value or not. Can be determined. In the second embodiment, since leakage of the internal air is promoted in advance by the pressure conveyor 13, even a minute sealing defect is not overlooked and the reliability of inspection is improved.

[0011]

[Effect] As described above, according to the present invention, the sealing function is automatically inspected for all the bagged products in the course of the transport operation, and defective products are discharged to the outside of the transport path. It is possible to omit manpower and to eliminate inspection omissions.

[Brief description of drawings]

FIG. 1 is a side view according to the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is an operation explanatory diagram of the above.

FIG. 4 is a side view of the second embodiment according to the present invention.

FIG. 5 is a plan view of the above.

FIG. 6 is an operation explanatory diagram of the above.

FIG. 7 is a perspective view showing a fusion seam of a bag-filled product.

FIG. 8 is a perspective view of a bag filling device.

[Explanation of symbols]

 10 Transport Conveyor 11 Detection Conveyor 12 Leveling Conveyor 13 Pressure Conveyor 21, 22, 23, 24 Lever 25, 26, 27 Counterweight 41, 42, 43 Sprocket 35 Sensor 36 Distance Meter 37 Discharge Nozzle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591210301 SSA Packaging Engineering and Consulting PTW Limited S. S. A. PACKAGING EN GINEERING & CONSULT ANT PTY. LIMITED Australia 2229 Carlin Bar Whitewood Place, New South Wales 3/7 (72) Inventor Kazuki Fujio 1812-2, Oshima-cho, Nishisonogi-gun, Nagasaki Prefecture 72 Inventor 20 Shoji Hirashima 20 Oshima-cho, Nishisonogi-gun, Nagasaki Prefecture 1813-8 20

Claims (2)

[Claims] 1. A bag which is provided in parallel above a conveyor for transferring bagged goods in one row and has a length substantially equal to that of one bag of bags and a lower surface at the same speed in the same direction as the conveyor surface of the conveyor. A moving detection conveyor, a sensor for detecting the arrival of a bagging product below the detection conveyor, a parallel link mechanism for pressing the detection conveyor onto the bagging product with a constant load, and the detection conveyor And a means for measuring the distance between the conveyor and the conveyor, and a sealing inspection device for a bagged product. 2. A pressure conveyer is provided upstream of the detection conveyer and at a distance of a conveyance pitch of the bagging product, and is driven at the same speed in the same direction with the same length as the detection conveyer, and the pressure conveyer is filled with the bag. The bagging product sealing inspection device according to claim 1, further comprising a parallel link mechanism for pressing the product onto the product with a constant load.