JPH0539047Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention stores various products such as bottled products, bagged products, canned products, etc. in a box such as a cardboard box, and automatically removes the bottom of the box. This invention relates to a box flap adhesion inspection device for inspecting the state of flap adhesion at the bottom of a folded box at a later stage on the transport side of a box folding device that folds and glues the flaps of the box.

(b) Conventional technology Conventionally, the flaps at the bottom of the box used to package the above-mentioned articles were made by, for example, folding the front and rear flaps at the bottom of the box toward the bottom side, and spraying a predetermined amount of adhesive such as hot melt onto the front and rear flaps. After attaching, fold the left and right flaps at the bottom of the box toward the front and rear flaps that were folded earlier and secure them together with adhesive.

When inspecting the adhesion state of the flap on the top of the box, for example, since boxes packed with vertically oriented items are normally transported with the bottom of the box always facing downward, Inspection can be easily carried out by suctioning the material with a suction device or by simply pulling it directly by hand.

However, when inspecting the adhesion state of the flaps at the bottom of the box, for example, the box cannot be inspected unless the box is lifted to see if the flaps have peeled off, or the box is turned over or rolled over. If the amount of adhesive sprayed is small and the flap at the bottom of the box has poor adhesion, the total weight of the stored items is attached to the flap at the bottom of the box, so it is difficult to lift the box carelessly. If you inspect the box by turning it over or turning it over, there is a risk that the flap at the bottom of the box will easily peel off and open, causing the items stored in the box to fall and be damaged or damaged. There is a problem in that pressure is applied to the closed part of an article such as a bottled product, which causes the article to be opened and the contents leak, resulting in loss of product value.

(c) Problems to be solved by the invention This invention is unique in that the box receiving plate is opened to the open position that allows the flap at the bottom of the box to be opened, and the flap at the bottom of the box is suctioned by a predetermined negative pressure of the absorber. With this configuration, it is possible to easily inspect the adhesive state of the flaps at the bottom of the box body while stopping or transporting the box to an adhesive inspection position, and also to reliably prevent stored items from falling due to poor flap adhesion. The purpose of this invention is to provide a body flap adhesion testing device.

(d) Means for Solving the Problems This invention is a flap adhesion inspection device that inspects the flap adhesion condition at the bottom of a box in which goods are packed at a predetermined adhesion inspection position on a conveyance path. a closed position in which the box body is placed;
A box receiving plate is provided that can be opened and closed to an open position where a flap at the bottom of the box can be opened while supporting the box, and a box receiving plate is provided at a position on the upper surface side of the box receiving plate opposite to the flap at the bottom of the box. A box in which an absorber is disposed that sucks the flap with a predetermined negative pressure and descends in the opening direction, and a photoelectric sensor is disposed at a position shielded from light by the flap at the bottom of the box that is opened by the suction action of the attractor. It is characterized by being a body flap adhesion testing device.

(e) Function of the device This device opens the box receiving plate to an open position where the flap at the bottom of the box can be opened after transporting the box containing the goods and transferring it to the box receiving plate, and at the same time. ,
When the flap at the bottom of the box is sucked by the suction force generated by the predetermined negative pressure of the suction element and lowered in the opening direction, if the adhesive force between the flaps is weaker than the suction force of the suction element, the suction force will cause the flap at the bottom of the box to is peeled off, and this flap blocks light from the photoelectric sensor, thereby determining the adhesion state of the flap at the bottom of the box, and at the same time, the stored items are supported by the box support plate.

(f) Effects of the invention According to this invention, the flap at the bottom of the box is forcibly suctioned by a predetermined negative pressure by the suction element, so even if a flap with poor adhesion is peeled off by the suction force of the suction element, the photoelectric sensor cannot be detected. By blocking light, it is possible to reliably determine if there is a flap adhesion failure at the bottom of the box in which the goods are packed, and there is no need to turn over or lift the box as in the conventional case. The state of flap adhesion can be easily inspected.

Moreover, since the box receiving plate is opened to the open position that allows the flap to be opened while supporting the box, for example, if the flap at the bottom of the box has poor adhesion, the weight of the item may cause the box to be damaged during inspection. Even if the flap at the bottom of the body is unexpectedly peeled off, the stored articles are supported by the box support plate to prevent them from falling, and the stored articles can be reliably protected from breakage or damage due to poor adhesion of the flaps.

As a result, the inspection is carried out under strict conditions while the goods are still stored, and external force is applied to the flap at the bottom of the box, making the inspection reliable and ensuring the safety of the packaging. Since this inspection device can be used at the final stage of shipping, it is possible to obtain high reliability in packaging the packaging box body.

(g) Example of the invention An example of the invention will be described below in detail based on the drawings.

The drawings show a flap adhesion inspection device for inspecting the adhesion state of the bottom of the box, and in Figs. 1 to 3,
This flap adhesion inspection device position 0 is disposed at the rear stage of the transport side of the box folding device 1, and inspects the flap adhesion state of the bottom of the box 4 in which the article 2 is packed at the adhesion test position set on the transport path of the box folding device 1. do.

The above-mentioned box folding device 1 stores articles 2 in a box body 4 such as a cardboard box using an article storage device 3 at the front stage of the device, and transports the articles 2 by a box conveyor 5 stretched in the conveying direction. At 6, the front and rear flaps 4a, 4a at the bottom of the box body 4 were folded toward the bottom side of the box, and at the upper flap folding device 7, the front and rear flaps 4b, 4b at the top of the box body 4 were folded toward the top side of the box, and the flaps were placed vertically during transportation. A predetermined amount of adhesive (hot melt) is sprayed onto each of the upper and lower front and rear flaps 4a, 4b by each adhesive sprayer 8, and during transportation, a pair of left and right flap folding guides 9 installed above and below are applied to each of the upper, lower, left and right flaps. The flaps 4c, 4c are folded and glued to the top side of the box and the bottom side of the box.
Inspect the adhesive condition of the flap at the bottom of the box body 4.

In addition, on both sides of the above-mentioned box conveyor 5,
Two box guides 1a, 1a are installed in parallel along the transport direction.

As shown in FIG. 4, the above-mentioned articles 2 are, for example, a predetermined number of aligned articles 2 that are shrink-wrapped in a set and conveyed by a belt conveyor 11, and are shrink-wrapped at the latter stage of the conveyor side of the belt conveyor 11. The two sets of articles 2 are stacked one above the other and transferred to the lifting table 3a of the article storage device 3.

In addition, the poorly packaged article 2 is transferred to the belt conveyor 11.
Transfer to A and return to the previous stage of the packaging process.

As shown in FIG. 3, the article storage device 3 described above stacks a large number of folded boxes 4 and loads them into a box loading section 12, and has a suction arm 13 pivotally supported on the side. The first box body 4 is sucked by each suction element 13a, and the box body 4 is
A holding plate 14 having a cylindrical opening and pivotally supported on the side.
is rotated horizontally by the operation of an air cylinder 15 pivotally mounted on the free end side, and the suction arm 13 and the clamping plate 1 are
4 to hold the box body 4 on the lifting platform 3a.

The above-mentioned elevating table 3a has the cylinder rod of the air cylinder 16 erected at the bottom of the device fixed to the back surface of the elevating table 3a, and lifts the articles 2 on the belt conveyor 11.
It is raised and lowered to a position where articles 2 are transferred and loaded, and a position where articles 2 are stored in a box 4 held at the top.

In addition, the above-mentioned box body 4 is a pusher etc. (not shown)
is transferred to the bottom flap folding device 6.

As shown in FIG. 2, the box transport conveyor 5 described above is equipped with support shafts 17 that are pivotally supported at the front stage position of the bottom flap folding device 6 and at the rear stage position of each flap folding guide 9. Each sprocket 18... is supported by bearings (not shown) provided at both ends of the machine, and two chains 19, 19 are stretched across each sprocket 18... on both sides of the device. A plurality of box transport rods 20 are installed between the chains 19, 19 at predetermined intervals in the length direction.

Then, the driving force of the drive motor 1 disposed at the bottom of the device moves the box conveyor 5 in the transport direction via the drive sprocket 21a, the drive chain 22, and the sprocket 23 fixed coaxially with the sprocket 18 at the bottom. Rotate.

As shown in FIG. 3, the above-mentioned bottom flap folding device 6 has a fixed support plate 24 installed upright after the box folding position, and a fixed support plate 24 installed in front of the box folding position with a slightly wider distance than the fixed support plate 24. The stored articles 2 in the box body 4 are supported by a pair of upright movable support plates 25, 25,
The box body 4 is supported by a pair of box receiving plates 26, 26 disposed on both sides, and the box body 4 is pressed against each box receiving plate 26, 26 by a box pressing device 27 disposed at the top.
Further, the box body 4 is temporarily stopped at the box folding position by opening and closing the gates of the rotary air cylinders 6a, 6a fixed on the box guides 1a, 1a on both sides.

A rear flap folding plate 28 is fixed to the center of the support shaft 17 which is pivotally supported in the front stage of the above-mentioned device, and this support shaft 1
A cylinder rod of an air cylinder 29 pivotally attached to the side of the device is connected to an arm portion 17a fixed to one end of the rear flap folding plate 28 of the box body 4.
It is pivotably supported on the bottom side of the.

Each of the movable support plates 25, 25 described above is constructed by slidably attaching a slide base 31 on which each of the movable support plates 25, 25 is erected on a rail 30 laid along the transport direction at the bottom of the device. A chain 33 is stretched between the sprocket 17b fixed to the other end of the shaft 17 and the sprocket 32 which is pivotally supported at the box folding position, and a rod is attached to the free end side of the crank arm 34 fixed coaxially with the sprocket 32. A crank-type drive mechanism 3 configured by having one end of the rod 35 pivoted and the other end of the rod 35 pivoted to the side of the slide base 31.
6 converts the rotational motion of the crank arm 34 into a reciprocating sliding motion of the slide base 31.

In addition, the above-mentioned rod 35 is attached to the crank arm 3.
The pivot position is adjustable along the long groove 34a formed in the rear flap folding plate 28, and the rear flap folding plate 28 can be rotated.
The timing of movement of each of the pair of movable support plates 25, 25 is configured to be variable.

The box push-down device 27 described above has a box push-down plate 27a fixed to the cylinder rod of an air cylinder 37 fixed vertically at the top of the device, and moves the box push-down plate 27a up and down in the vertical direction.

Note that a front flap folding plate 38 whose front end on the conveyance side is curved downward is provided at a position on the rear stage side of the above-mentioned fixed support plate 24, and this front flap folding plate 38
At the rear position, a bottom flap guide 39 whose front end on the conveyance side is curved downward is installed along the conveyance direction to a length reaching the front stage of the flap adhesion inspection device 10.

As shown in FIG. 2, the above-mentioned upper flap folding device 7 has a base end portion of a swinging arm 40 pivotally attached to the top of the device, and a rear flap folding plate 41 attached to the free end of the swinging arm 40. At the same time, the cylinder rod of the air cylinder 42 fixed vertically at the top of the device is pivotally attached to the back side of the swing arm 40 so as to be swingable in the transport direction, and the cylinder rod of the air cylinder 42 is fixed vertically at the top of the device so as to be swingable in the transport direction. An upper flap guide 43 whose front end on the transport side is curved upward is installed along the transport direction and parallel to the bottom flap guide 39 at intervals of the height of the box body 4.

Each of the above-mentioned adhesive sprayers 8... has a pair of adhesive sprayers 8, 8 vertically disposed on both sides of the upper flap guide 43 at the top of the device, facing the top surface of the box 4; A pair of adhesive sprayers 8, 8 are disposed on both sides of the lower bottom flap guide 39, facing the bottom surface of the box body 4, and with their spraying directions slightly inclined toward the transport direction.

The aforementioned pair of left and right flap folding guides 9...
As shown in FIG. 3, the flaps are vertically symmetrically installed, and are installed at both sides along the upper flap guide 43 and at both sides along the bottom flap guide 39, and the front end side in the transport direction is installed from the box body 4. Also, the vertical and horizontal intervals are slightly widened, and the rear end side is gradually constructed to become slightly narrower in the vertical and horizontal intervals than the box body 4 in the conveying direction.

As shown in FIG. 1, the above-mentioned flap adhesion inspection device 10 has box support parts 44, 44 attached to each box guide 1a, 1a at an adhesion inspection position set on the conveyance path.
are vertically provided, and the lower edges of each of the box support parts 44, 44 are slightly extended toward the opposing surface side, so that each of the support edges 44a, 44a
A plurality of guide rollers 45 are pivotally supported in the conveyance direction on each of the support edges 44a, 44a, and a box pushing device 46 is disposed at the top of the device.

At the bottom of each of the box supports 44, 44, two box receiving plates 47, 47 are pivotally supported on the support frames 1b, 1b on both sides of the device so as to be openable and closable downward, respectively. The cylinder rods of the air cylinders 48 and 84 disposed at the bottom of the device are respectively pivotally connected to the back surfaces of the free end sides of the plates 47 and 47, and the box receiving plates 47 and
47 is provided so as to be freely openable and closable downward and to the left and right, and each suction member 49, 49 connected to a suction device (not shown) such as a compressor is provided exposed on the box mounting surface of each box receiving plate 47, 47. There is.

Further, photoelectric sensors 50, 50 each consisting of a light receiver and a light emitter are arranged opposite to each other on both sides of the lower part of each of the box receiving plates 47, 47. On the box mounting surface, at a position opposite to the irradiation direction of each photoelectric sensor 50, 50,
Each long hole 47a allows passage of this irradiated infrared rays,
47a is formed in the opening/closing direction.

The box push-down device 46 described above has a box push-down plate 46a fixed to the cylinder rod of an air cylinder 51 fixed vertically at the top of the device, and moves the box push-down plate 46a up and down in the vertical direction.

As shown in FIG. 4, the boxes 4 in which the articles 2 are packed and which have passed the adhesion inspection are transported by a roller conveyor 52 stretched behind the box folding device 1, and after their weights are inspected by weight checkers 53 installed midway, they are transported to the next shipping process or the like.

The illustrated embodiment is constructed as described above, and its operation will be explained below.

As shown in FIG. 4, for example, shrink-wrapped articles 2 are conveyed by the belt conveyor 11, stacked in two stages on the lifting platform 3a of the article storage device 3, and then transferred to the lifting platform 3a. Store it in body 4.

Then, the box 4 is moved horizontally using a pusher (not shown) to transfer the article 2 onto the fixed support plate 24 and each movable support plate 25, 25 of the bottom flap folding device 6, and the box pusher 27 The box body 4 is connected to each box receiving plate 26,
26 and fix it.

Next, the rear flap 4a at the bottom of the box body 4 is transported by the rear flap folding plate 28 of the bottom flap folding device 6 toward the bottom side of the box by the box transport conveyor 5.
Using the front flap folding plate 38, move the front flap 4a at the bottom of the box body 4 to the bottom side of the box, and move the upper flap guide 43
, move the front flap 4b on the top of the box body 4 towards the top side of the box,
Immediately after the upper flap folding device 7 folds the rear flaps 4b on the upper part of the box body 4 toward the upper surface of the box, the upper and lower adhesive sprayers 8 . . .
Spray a predetermined amount of adhesive onto a and 4b, and use the upper and lower flap folding guides 9 to fold the upper and lower left and right flaps 4.
Fold and glue c... to the top side of the box and the bottom side of the box, respectively.

Next, as shown in FIG. 5, at the adhesion testing position of the flap adhesion testing device 10, the box body 4 is transferred to each of the box receiving plates 47, 47 in the closed state, and the boxes on both sides are supported. Each support edge 44 formed on the portions 44, 44
a, 44a, and lower the box pressing plate 46a of the box pressing device 46 to move the box 4 to each support edge 44.
a, 44a and hold it.

After that, after the left and right flaps 4c, 4c at the bottom of the box body 4 are suctioned and held by the respective suction elements 49, 49 disposed on the respective box receiving plates 47, 47, the lower air cylinders 48, 48 are operated. Then, the box receiving plates 47, 47 are gradually opened downward and left and right in the direction of opening the left and right flaps 4c, 4c at the bottom of the box body 4.

As shown in FIG. 6, if the mutual adhesive force between the front and rear flaps 4a, 4a and the left and right flaps 4c, 4c at the bottom of the box body 4 is weaker than the suction force caused by the predetermined negative pressure of each suction element 49, 49, The left and right flaps 4c, 4c or one side flap 4c at the bottom of the box body 4 are peeled off due to the suction force, and the flaps 4c with poor adhesion block each photoelectric sensor 50, 50, so that the box body 4
The adhesive condition of the bottom flap is determined to be poor.

In addition, when the left and right flaps 4c, 4c mentioned above are bonded more firmly than the suction force, when each box receiving plate 47, 47 is opened to a predetermined opening position, each suction element 49, 49 is released from the left and right flaps 4c, 4c. are separated, and each long hole 47a, 4 of each box receiving plate 47, 47 is separated.
The light is emitted and received between the photoelectric sensors 50, 50 via the photoelectric sensors 7a, and it is determined that the flap is in a good state of adhesion.

Thereafter, the box 4 that has been judged is carried out by the following box 4, each box receiving plate 47, 47 returns to the closed position and stands by, and the box 4 with good adhesion is transported via the roller conveyor 52. After the weight is inspected by the weight checker 53, it is transported to the next shipping process, etc.
The box body 4 with defective adhesion is packed and repaired before being transported.

In this way, the left and right flaps 4c, 4 at the bottom of the box body 4
c is adsorbed with a predetermined negative pressure by each suction member 13a, 13a, and the left and right pair of box receiving plates 47, 47 are opened downward and left and right, and the left and right flaps 4c,
4c is forcibly pulled in the direction of opening, so
If the left and right flaps 4c, 4c with defective adhesion are peeled off by the suction force of the suction members 13a, 13a, and the photoelectric sensors 50, 50 are shielded from light, defective adhesion of the flaps at the bottom of the box 4 in which the article 2 is packed can be reliably determined. There is no need to turn over or lift the box 4 as in the conventional case, and the state of adhesion of the flap at the bottom of the box 4 can be easily inspected while stopping or transporting it to the adhesion inspection position.

Furthermore, each box receiving plate 47 is placed in the open position where the flap can be opened while supporting the box body 4.
Since the flaps 47 are gradually opened, the right and left flaps 4c, 4c at the bottom of the box 4 may be accidentally separated due to the weight of the article 2 during inspection due to poor adhesion of the left and right flaps 4c, 4c at the bottom of the box 4, for example. However, the stored articles 2 can be supported by the box receiving plates 47, 47 to prevent them from falling, and the stored articles 2 can be reliably protected from breakage or damage due to poor adhesion of the flaps.

Note that this invention is not limited to the configuration of the above-described embodiment.

For example, the above-mentioned box receiving plate 47 is provided so as to be vertically movable, and the left and right flaps 4c, 4c, and
4c may be suctioned down in the opening direction to inspect the flap adhesion state at the bottom of the box body 4.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which Fig. 1 is a longitudinal front view showing a flap adhesion inspection device, Fig. 2 is a longitudinal sectional side view of a box folding device, and Fig. 3 is a transverse plan view showing the box folding device. FIG. 4 is an explanatory diagram of the transport route of the article from packaging to completion of packaging, and FIGS. 5 and 6 are explanatory diagrams of the operation of the box flap adhesion inspection apparatus. DESCRIPTION OF SYMBOLS 1... Box folding device, 2... Article, 4... Box body, 4c... Flap, 10... Flap adhesion inspection device, 44... Box support part, 47... Box receiving plate,
47a...Long hole, 48...Air cylinder, 49
...Adsorber, 50...Photoelectric sensor.

Claims (1)

[Scope of Claim for Utility Model Registration] A flap adhesion inspection device for inspecting the flap adhesion state of the bottom of a box in which an article is packed at a set adhesion inspection position on a conveyance path, A box receiving plate that can be opened and closed is provided at a closed position where the box is placed and an open position where a flap at the bottom of the box can be opened while supporting the box, and the box holder faces the flap at the bottom of the box. A suction element is placed on the top side of the plate to suck the flap with a predetermined negative pressure and descend in the opening direction, and the flap is placed at a position where it is shielded from light by the flap at the bottom of the box that is opened by the suction action of the suction element. A box flap adhesion inspection device equipped with a photoelectric sensor.