JPH09301305A - Boxing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the speed of the arranging work of a boxing device in which packaged goods of a prescribed number are arranged during the carriage. SOLUTION: A goods X is dropped and discharged from a first carrying conveyor 51 onto a second carrying conveyor 52, and a second carrying conveyor 52 and a third carrying conveyor 53 are intermittently moved forward by the prescribed distance every time one goods X is discharged, and the dropped goods X is arranged with the prescribed overlapping margin (m) with the preceding goods X. When the goods X of the prescribed number are dropped, the second and third carrying conveyors 52, 53 are switched in the continuous carriage mode to feed the goods X...X onto a fourth carrying conveyor on the downstream side, and when rear end parts of the goods X are discharged from the second carrying conveyor 52, the second carrying conveyor 52 is switched from the continuous carrying mode to the intermittent carrying mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box packing device, and more particularly to a box packing device for sequentially packing packaged products in a predetermined container such as a cardboard box.

[0002]

2. Description of the Related Art Items such as snacks such as potato chips, which are packed in a bag with a bag making and packaging machine in a predetermined weight, are shipped in the market after being boxed in a predetermined container such as a cardboard box. In that case, for example, JP-A-6-26
As disclosed in Japanese Patent No. 3106, a packaged product supplied from a bag making and packaging machine is sequentially transported by a transport conveyor forming a transport path of the product and sent to a boxing work unit, and the work unit is provided with the packaged product. There is known a cartoning device for automatically cartoning the product into a predetermined container such as a corrugated cardboard box by the cartoning mechanism.

At this time, the boxing mechanism may be, for example, above the carry-in position of the packaged goods carried into the boxing work section by the transfer conveyor, or above a predetermined container separately installed in the boxing work section. It has a supporting member which is movable and elevating above and below the installation position, and the lower end of this supporting member is provided with a suction-type pad for capturing or releasing a product, thereby supporting the above-mentioned support. By moving the member reciprocally above both positions of the product loading position and the container installation position and moving up and down at each position, the packaged products carried in by the conveyor are adsorbed and captured from above by the suction pad, There is used a container which is lowered and stored in a container.

By the way, in this type of boxing device, in order to reduce the distribution cost of the boxed product, it is possible to stack the products adjacent to each other in the container at their side edges so that the product can be packed as densely as possible. In some cases, the packing device is generally configured as follows from the conventional case.

That is, as shown in FIG. 9, for example, a first transport conveyor s for sequentially transporting the packaged products X ... X supplied from a bag making and packaging machine to the downstream side, and discharging from the first transport conveyor s. A second transport conveyor t for transporting the stored products X ... X to the boxing work unit further downstream, and the start end of the second transport conveyor t is located below the end of the first transport conveyor s. Then, the products X ... X are dropped from the first transfer conveyor s and discharged onto the second transfer conveyor t.

Each time one product X is discharged onto the second conveyor t, the second conveyor t is intermittently moved by a distance n shorter than the bag length of the product X by a predetermined length m. The front side edges of the products X ... X discharged from the first transfer conveyor s in the transfer direction a are moved forward so that they overlap each other by a predetermined length (overlap) m, and a plurality of such intermittent drives are performed. Repeat a predetermined number of times (4 in the figure)
The individual products X ... X are sequentially arranged on the second transport conveyor t in a state of being superposed.

Thereafter, the second conveyer t is switched to the continuous drive, and the commodities X ... X are sent all at once to the third conveyer u provided in the boxing work section on the downstream side, and the commodities X ... X. However, the suction pad of the boxing mechanism is used to capture the piles in this overlapping state.

In this case, the rear end of the second transport conveyor t, which has a predetermined number of aligned products X ... X, is discharged from the second transport conveyor t and transferred to the third transport conveyor u of the boxing work section. Product X to be discharged next from the first transfer conveyor s by being switched to the intermittent drive again when
Will be moved to the overlay work.

[0009]

However, in this case,
In the first transfer conveyor s that discharges the product X to the second transfer conveyor t, from the start point of continuous drive of the second transfer conveyor t, the continuous drive causes the previous set of products X ... X.
Until the rear end of the rear end moves by the distance indicated by L in FIG. 9 and transfers to the third conveyor u, the conveying operation must be temporarily stopped so that the next product X is not discharged from the first conveyor s. I won't. That is, if the next product X is discharged during continuous driving of the second conveyor t, the product X moves forward by more than the bag length and does not overlap with the next product X.

As a result, not only the transfer operation of the first transfer conveyor s, but also each operation of the bag making and packaging machine and the like arranged upstream thereof are temporarily stopped and stand by.
The whole boxing work will be delayed.

Therefore, it is an object of the present invention to shorten the temporary stop period of such an upstream side device to increase the processing speed of this type of boxing device.

[0012]

Means for Solving the Problems To solve the above problems, the present invention is specified as follows.

That is, the invention according to claim 1 of the present invention (hereinafter referred to as "first invention") includes a first conveyor for sequentially conveying packaged products to the downstream side, and the first conveyor. A boxing device having a second transfer conveyor for transferring the product discharged from the device further downstream, and a boxing mechanism for packing the product discharged from the second transfer conveyor in a predetermined container. The two conveyors are composed of a plurality of conveyors that are arranged in a row in the product conveying direction, and a control means for controlling these conveyors is provided, and the control means supplies each time the product is discharged from the first conveyor. After intermittently driving the second conveyor to align the products in order on the second conveyor,
By continuously driving the transfer conveyor, these aligned products are transferred toward the boxing mechanism on the downstream side, and during this transfer, when the products are discharged from the upstream conveyor of the second transfer conveyor, It is characterized in that the upstream conveyor is sequentially switched to intermittent drive.

The invention according to claim 2 (hereinafter referred to as "second
Invention ". ) Is a box packing device which also has a first transfer conveyor, a second transfer conveyor and a box packing mechanism, wherein the second transfer conveyor comprises a plurality of conveyors arranged in a row in the product transfer direction, and A control means for controlling the conveyor is provided, and the control means is
Every time a product is discharged from the first conveyor, the upstream conveyor of the second conveyor is intermittently driven to arrange the products on the upstream conveyor in order, and then the second conveyor is continuously driven. , These aligned products are transported toward the boxing mechanism on the downstream side, and during this transportation,
When the product is discharged from the upstream conveyor of the second transfer conveyor, the upstream conveyor is switched to intermittent driving.

Further, the invention according to claim 3 (hereinafter referred to as "third invention") is the same as the first invention or the second invention, wherein the control means controls the transport operation of the first transport conveyor. , While temporarily stopping the transport operation of the first transport conveyor from the start point of continuous driving of the upstream conveyor,
Before switching the upstream side conveyor to intermittent driving, when the trailing end of the product being conveyed remains on the upstream side conveyor for a length corresponding to one intermittent driving distance, the next It is characterized in that the transport operation of the first transport conveyor is restarted so that the product is discharged from the first transport conveyor.

According to these first, second and third inventions,
Secondly, after arranging the packed products discharged from the first transfer conveyor in order, and then transferring them toward the boxing mechanism on the downstream side.
The conveyor is composed of a plurality of conveyors that are arranged in tandem in the product conveying direction, and these conveyors are switched between intermittent drive and continuous drive by the control means, so that the products are superposed in the same manner as in the past. They will be lined up and transported to the boxing work section.

Then, when the product is discharged from the upstream side conveyor and transferred to the downstream side conveyor during the transfer of the products by continuous driving of these conveyors constituting the second transfer conveyor, at that time, the upstream side conveyor. Is switched from the continuous drive to the intermittent drive, the first conveyor that discharges the products to the second conveyor is until the products are discharged from the entire second conveyor, that is, the products are discharged from the downstream conveyor. Until that time, the carrying operation does not have to be stopped, and when the product is discharged from the upstream side conveyor and the upstream side conveyor is switched to the intermittent drive, the loading operation can be restarted early. Therefore, the work standby time of the upstream side device including the first conveyor, the bag making and packaging machine, etc. can be shortened, and as a result, the processing speed of this type of boxing machine can be increased. .

In this case, in particular, according to the third aspect of the present invention, the product being conveyed is discharged from the upstream side conveyor and is being conveyed onto the upstream side conveyor before the upstream side conveyor is switched to the intermittent drive. When the trailing edge of the product remains for a length corresponding to one intermittent drive distance, the transport operation of the first transport conveyor is restarted so that the next product is discharged to the upstream conveyor.

That is, without waiting for the product being conveyed from the upstream conveyor to be completely discharged, the next product is continuously driven by a distance for moving the next product forward by intermittent driving after the discharge. To get ahead. As a result, the temporary stop period or the work standby time of the upstream side device is further shortened.

Next, the invention according to claim 4 (hereinafter referred to as "fourth aspect"
Invention ". ) In any one of the above-mentioned first to third inventions, the plurality of conveyors of the first conveyor and the second conveyor are respectively driven by a servo mechanism and conveyed by the control means via the servo mechanism. The operation is controlled.

According to the fourth aspect of the present invention, by the control of the servo mechanism capable of controlling the driving amount and the like with high accuracy, the timing of the temporary stop or the restart of the first conveyor, or the timing of the second conveyor. The timing of switching the drive modes of the plurality of conveyors on the upstream side and the downstream side can be well controlled.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

As shown in FIG. 1, a boxing device 1 according to this embodiment is a cardboard box or the like in which packaged products such as snacks such as potato chips packed in a predetermined weight by a bag making and packaging machine are sequentially packed. Of the bag-making and packaging machine (not shown). ) Side, the packaged product X dropped and supplied to the supply section a is in the direction of the arrow a.
And a weighing and conveying mechanism 2 that weighs the weight of the product X, and further transports the product X transported by the weighing and transporting mechanism 2 to the downstream side while raising the product X and a sealing failure of the packaging bag of the product X. And the bag inspection / conveyance mechanism 3 for inspecting the length of the product X, and if the product X conveyed by the bag inspection / conveyance mechanism 3 is a defective product based on the above measurement result and inspection result, the outside of the boxing device 1 If the product is a normal product and is continuously conveyed to the downstream side, the sorting / conveying mechanism 4 and the front and rear side edges in the conveying direction a of a predetermined number of the products X continuously conveyed by the sorting / conveying mechanism 4 are formed. An aligning / conveying mechanism 5 for aligning the sheets on top of each other and conveying them to the boxing operation section a in that state, and a predetermined number of products X ... X conveyed to the boxing operation section a by this alignment conveyance mechanism 5 from above. A boxing mechanism 6 for holding and holding a box and packing it in a high-speed and high-density box in a corrugated cardboard box Y separately prepared in the boxing work section a in a state of being superposed from the upper opening thereof. Packaged by X
A product transporting route for transporting X in the transporting direction a from the supply section A to the boxing operation section B is formed.

The structure of each unit will be described below.

As shown in the enlarged view of FIG. 2, the weighing and conveying mechanism 2 includes a first conveyor 21 for receiving the product X dropped and discharged from the bag making and packaging machine by the chute 21h and conveying it in the conveying direction a, And a second transfer conveyor 22 which is arranged on the downstream side of the first transfer conveyor 21 and which transfers the product X while slightly raising it in the transfer direction a, and both the transfer conveyors 21 and 22 have a support frame 21a. , 22
a pair of rollers 21b, 21 rotatably supported by a
c; 22b, 22c and the rollers 21b, 21c; 22
Conveyor belts 21d and 22d, which are endlessly stretched between b and 22c, and conveyor belts 21d and 22d and the support frames 21a and 22a.
1c and 22c are configured to include drive motors 21f and 22f that rotationally drive the belts 1c and 22c via belt transmission mechanisms 21e and 22e.

In the first transfer conveyor 21, the support frame 21a thereof is provided on a base 23 installed in the weighing transfer mechanism 2 and is erected on a bracket 21g.
Is rotatably attached to the end portion side roller 21c via a support shaft 21c ', so that the first conveyor 21 swings around the support shaft 21c' and its start end portion (supply portion ) Height position can be changed according to the specifications of the packaging machine.

Further, in the second transfer conveyor 22,
The supporting frame 22a has a leg member 22g on the base 23.
Is attached via the support frame 2
Although not shown in the figure, a meter 24 composed of a load cell or the like is provided in the 2a (see FIG. 8), and the conveyor belt 2 thereof is provided.
The weight of the product X conveyed on 2d can be measured.

On the other hand, also in the bag inspection / conveyance mechanism 3, as shown in an enlarged view in FIG. 2, a pair of rollers 31b and 31c rotatably supported by the support frame 31a and an endless space between the rollers 31b and 31c. The belt 31d is composed of a conveyor belt 31d, which is a timing belt stretched like a belt, and a drive motor 31f which is attached to the support frame 31a and drives the roller 31c on the terminal end side to rotate via a belt transmission mechanism 31e. A third transport conveyor 31 is provided, and the support frame 31a is provided with the bag inspection transport mechanism 3
It is attached to brackets 32 and 33 installed inside.

Further, in the bag inspecting and conveying mechanism 3, the leveling mechanism 34 for equalizing the bulging height of the product X conveyed by the third conveying conveyor 31 and the leveling mechanism 34 for leveling the same. A seal checker 35 that detects a defective seal of the packaging bag of the product X is provided in order along the transport path.

Both the leveling mechanism 34 and the seal checker 35 have substantially the same structure, and the frame 31a is supported by the frame 31a so as to be swingable around the support shafts 34a '... 34a', 35a '... 35a'. Link members 34a ... 34
a, 35a ... 35a and the link members 34a ... 34a,
35a ... Pressing plates 34b, 35b rotatably supported on the upper end of 35a and arranged above the conveyor belt 31d.
Is attached to the frame 31a so as to be swingable around the support shafts 34d 'and 35d', and the piston rods 34c and 3d.
5c has cylinder devices 34d and 35d that are rotatably connected to the lower ends of the predetermined one of the link members 34a and 35a, and the link members 34a ... 34a, as the pressing plates 34b and 35b move up and down. 35a ... 35a is a support shaft 34a '
... 34a ', 35a' ... 35a 'swings, whereby the piston rods 34c, 35c move forward and backward.

The pressing plates 34b and 35b are constantly urged downward by a predetermined pressure by the cylinder devices 34d and 35d, and in the leveling mechanism 34, the product X being conveyed by the third conveyor 31 is pressed. The seal checker 35 is made uniform by the plate 34b, and the cylinder device 35d of the seal checker 35 is provided with a linear encoder 35e for detecting the forward / backward displacement of the piston rod 35c. A defective X seal is detected.

Further, on the side of the second conveyor 22 in the weighing and conveying mechanism 2 and on the side of the third conveyor 31 in the bag inspecting and conveying mechanism 3, the product X being ascended and conveyed.
... Protective plates 25 and 36 for preventing the falling of X are provided, and the protective plate 36 of the bag inspection and transport mechanism 3 is also provided.
In the vicinity of the entrance of the seal checker 35, the product X
A first product detection sensor (commodity length sensor) 37 for detecting the passage of the product X is arranged, and the bag length of the product X being conveyed is measured from the passage time.

Next, the distribution transport mechanism 4 arranged on the downstream side of the bag inspection transport mechanism 3 will be described. As shown in FIGS. 3 to 5, the distribution transport mechanism 4 has an open upper surface. It has a rectangular frame 41, and the frame 41 is installed on the main body base 1a of the boxing device 1 as shown in FIG. A large number of rollers 42 ... 42 are rotatably provided on the upper part of the frame 41, and these rollers 42 ... 42 slightly project from the upper opening 41a of the frame 41 to form the conveyance surface of the product X.

A shaft 43 arranged in a direction orthogonal to the rollers 42 ... 42 is rotatably supported by a frame 41 below the conveying rollers 42 ... 42, and the inside of the frame 41 is also supported. Is provided with a drive motor 44 via a bracket 44a, and the shaft 43
The pulley 43a and the output shaft 4 of the drive motor 44
A timing belt 44d is stretched endlessly between a pulley 44c provided at 4b. 42a formed in the conveying rollers 42 ... 42 and the shaft 43 and the ropes 42b ... 4 for power transmission.
2b is wound around the output shaft 4 of the drive motor 44.
The rotation of 4b is transmitted to the rollers 42 ... 42 via the timing belt 44d and the power transmission ropes 42b ... 42b, whereby the transport rollers 42 ... 42 rotate,
The product X discharged from the bag inspection / conveyance mechanism 3 onto the rollers 42 ... 42 is conveyed in the conveyance direction a.
In this case, the product X is discharged from the bag inspection / conveyance mechanism 3 to the sorting / conveyance mechanism 4 at the upper left position in the drawing of FIG.

Further, immediately below the conveying rollers 42 ... 42, at a position to the left of the conveying direction a, there are three rollers arranged in a direction orthogonal to the rollers 42 ... 42, that is, in the same direction as the conveying direction a. 45 of the book are rotatably supported by the frame 41, and the frame 41
Wall surface 41 on the transport terminal end side of the sorting transport mechanism 4 in
A drive motor 46 is attached inside b. Then, the rear ends of the shafts 45 ... 45 and the motor 46.
Of the output shaft 46 a of the rear wall surface 4 of the frame 41.
45a, 46b protruding from 1b and respectively provided on these protruding ends, and the rear wall surface 41b.
The timing belt 48 is stretched endlessly between the tension belt 47 and the tension pulley 47 provided on the drive motor 46.
The shafts 45, ...

Further, in the shafts 45 ... 45, the transport start end side of the sorting transport mechanism 4, that is, in the vicinity of the discharge position of the product X from the bag inspection transport mechanism 3 to the sorting transport mechanism 4, A plurality of arc-shaped distribution members 49 (five in the illustrated example) having a slightly longer circumference than a circle are attached. In this case, the distribution members 49 ... 49 are attached so that the center of the arc and the shaft centers of the shafts 45 ... 45 coincide with each other, and the rotation of the shafts 45 ... 45 causes the straight sides 49a ... 49a to face upward. When the retracted posture is set, the product does not protrude from the product transporting surface formed by the transport rollers 42 ...
As indicated by an arrow b, the arc sides 49b ... 49b of the product X project from the transport surface as the product X is rotated in the left lateral direction about the shafts 45 ... 45 in the lateral direction. It is like this.

Accordingly, when the distribution members 49 ... 49 are in the retracted posture, the product X conveyed on the conveyance rollers 42 ... 42 advances straight in the conveying direction a, while the distribution member 4 is arranged.
When 49 ... 49 rotate in the left lateral direction b, the conveyance rollers 42 are moved by the arc sides 49b ... 49b protruding from the conveyance surface.
42 is lifted and laterally moved in the rotation direction b. Then, by the leftward rotation b of the sorting members 49, ...
2 ... 42 or the sorting / conveying mechanism 4, that is, the products are laterally discharged from the product conveying path.

Next, the aligning / conveying mechanism 5 arranged on the downstream side of the sorting / conveying mechanism 4 will be described. As shown in FIGS. The first, second, and third support frames 51a, 52a, and 53a are arranged in order from the upstream side along the main body base 1
The first conveyors 51 arranged on the a are arranged in the first frame 51a and are slightly inclined toward the product conveying direction a, and the second frame 52a is also arranged in the first frame 51a. Two conveyors, that is, a second conveyor conveyor 52 and a third conveyor conveyor 53, which are relatively short in size and are continuously arranged in tandem while slightly inclined upward toward a, and the third frame 53a has a box packing mechanism 6 Horizontally arranged fourth transfer conveyors 54 extending inward are provided respectively.

Each of these transfer conveyors 51 to 54 has the first and second transfer conveyors 21 and 21 of the weighing transfer mechanism 2 described above.
22, or the third transport conveyor 31 of the bag inspection transport mechanism 3, and the second transport conveyor 52 and the third transport conveyor 53, which are provided in the second frame 52a and have substantially the same configuration, will be described with reference to FIG. As shown, the support frame 52
a pair of rollers 52b, 52 rotatably supported by a
c; 53b, 53c and the rollers 52b, 52c; 53
Conveyor belts 52d and 53d, which are endlessly stretched between b and 53c, and rollers 52c and 5 on the terminal end side, which are attached to the support frame 52a.
3c is configured to include drive motors 52f and 53f that rotationally drive 3c via belt transmission mechanisms 52e and 53e.

The start end of the second transfer conveyor 52 is arranged below the end of the first transfer conveyor 51.
As a result, the product X transported by the first transport conveyor 51 is dropped onto the second transport conveyor 52 and discharged, and thereafter, the product X is taken over by the third transport conveyor 53 and the fourth transport conveyor 54 to perform a box packing operation. It is supposed to be loaded into department b.

A second product detection sensor (discharging timing sensor) 55 similar to the first product detection sensor 37 provided in the bag inspection and transfer mechanism 3 is also provided near the end of the first transfer conveyor 51. Are arranged and the passage of the rear end of the product X is detected, so that the first conveyor 5
The timing at which the product X is dropped and discharged from 1 is measured.

Among the drive motors of the above-described transport mechanisms 2 to 5, the sorting member rotation motor 46 of the sorting transport mechanism 4 and the first to fourth transport conveyor drive motors of the aligning transport mechanism 5 are included. 51f, 52f, 53f, 54f include
For example, servo motors whose rotational drive amounts are controlled by the number of output pulses are used.

Next, the packaging is performed downstream of the product transporting path formed by the transporting mechanisms 2 to 5, and the products X ... X that have been carried into the boxing work section a along the transporting path are sequentially boxed. The mechanism 6 will be described. As shown in FIG. 7, the boxing mechanism 6 is used for carrying in a container separately provided so as to run in parallel with the fourth transfer conveyor 54 of the alignment transfer mechanism 5 and the fourth transfer conveyor 54. The main body 61 of the boxing mechanism provided so as to surround the conveyor 56 of the above with the upper wall 61a and the pair of side walls 61b and 61c, and the turning servo which is fixed to the upper portion of the main body 61 and intermittently reciprocally rotates by 180 degrees. A motor 62 and a drive shaft 62a of the motor 62 are fixed by the motor 62 above the products X ... X carried into the boxing work section A by the fourth conveyor 54 and at the container carry-in conveyor 56. An arm member 63 that is reciprocally swung between the upper side of the corrugated board box Y that has been carried into the boxing work section a; Each of these support members 6
Suction pads 65 and 65 attached to the lower ends of the products 4 and 64 for capturing or releasing the products X ... X by a suction action, and provided on the side walls 61b and 61c, and swung by the servo motor 62 or the arm member 63. Each support member 64, 64
A first lifting mechanism 66 and a second lifting mechanism 66 for engaging and lifting the same
And an elevating mechanism 67.

On the other hand, a blower 68 is provided below the fourth conveyer 54 of the aligning and conveying mechanism 5, and a pipe 68 made of a flexible pipe is arranged from the blower 68.
a and 68a extend to the support members 64 and 64, respectively, and the tips thereof are suction pads 6 of the support members 64 and 64, respectively.
5 and 65, respectively.

Then, the reciprocating motion of the arm member 63 and the vertical motion of the supporting members 64, 64, and the pipe 68a,
Suction pad 65, 6 by the blower 68 via 68a
By the suction action of 5, the commodities X ... X carried into the cartoning work section a are adsorbed and held by the suction pads 65, 65 from above, and are sequentially packed in the corrugated cardboard box Y.

In this case, the arm member 6 which is reciprocally swiveled.
Since the support members 64, 64 are provided at both end portions of the sheet 3, and the suction pads 65, 65 are provided on the support members 64, 64, respectively, in the boxing mechanism 6, every time the arm member 63 rotates counterclockwise. Further, the capturing of the products X ... X and the packaging of the products are simultaneously performed in parallel, whereby the packaging work can be speeded up.

In addition to the configuration described above, the boxing device 1 is provided with a control unit 7 for controlling the conveying operation of the product X from the supply section A to the boxing operation section B, as shown in FIG. Has been.

The control unit 7 has a weighing signal from the weighing device 24 provided in the weighing and conveying mechanism 2, a seal inspection signal from the seal checker 35 provided in the bag inspection and conveying mechanism 3, and a product length sensor 37. Product length signal,
And a discharge timing signal or the like from a discharge timing sensor 55 provided in the aligned transport mechanism 5, and based on these signals, the first and second transport conveyor drive motors 21f, 22f,
The third transport conveyor drive motor 31f in the bag inspection transport mechanism 3, the transport roller drive motor 44 in the sorting transport mechanism 4, the sorting member rotation servomotor 46, and the first to fourth transport conveyors in the alignment transport mechanism 5. A rotation drive signal is output to each of the drive servomotors 51f to 54f to eject defective products out of the conveyance path, and a predetermined number of normal products are aligned by stacking the front and rear side edges by a predetermined number. It is supposed to be delivered to.

Next, the operation of transporting the product X by the boxing device 1 will be described together with the control operation performed by the control unit 7.

First, the packaged product X supplied to the supply section A.
Is transferred to the second transfer conveyor 22 on the downstream side by the first transfer conveyor 21 in the metering transfer mechanism 2, and then temporarily stopped at the position where the weighing device 24 provided in the second transfer conveyor 22 is disposed, After the weight is weighed here, the second conveyor 22 is driven again to be discharged to the bag inspection / conveyance mechanism 3.

At this time, a third product detection sensor similar to the product detection sensors 37, 55 provided in the bag inspection transport mechanism 3 and the alignment transport mechanism 5, for example, is provided at the position where the scale 24 is arranged. The control unit 7 stops the second conveyer conveyor driving motor 22f when the product X is detected by the sensor and restarts it when the weighing value from the weighing device 24 becomes stable.

The product X transported to the bag inspection transport mechanism 3 is
While passing through the mechanism 3 by the third conveyer 31 and transferred to the next sorting and conveying mechanism 4, the bulging shape of the packaging bag is formed by the pressing plate 34b of the leveling mechanism 34 provided on the conveying path during that time. After being uniformly leveled, the seal checker 35 and the product length sensor 37 subsequently perform a seal inspection and a length inspection of the packaging bag.

That is, the control unit 7 measures the bag length of the product X based on the passage time from the detection of the front end of the product X by the product length sensor 37 to the detection of the rear end thereof. .

In this case, the product length sensor 37 is arranged near the inlet of the seal checker 35 as described above. At this time, if the product X has a normal bag length, the rear end of the product X is detected. Is detected, the front end of the bag is still in the third transport conveyor 31 of the bag inspection transport mechanism 3.
It is arranged so as not to reach the distribution members 49 ... 49 of the next distribution conveyance mechanism 4 above. As a result, after it is determined that the bag length is normal or defective, the product X is discharged from the bag inspection / transportation mechanism 3 to the distribution / transportation mechanism 4, and the sorting member for the product X is delivered. .. 49 are distributed without delay in response.

In the control unit 7, after the tip of the product X is detected by the product length sensor 37 and the product X starts to enter the seal checker 35, substantially the entire product X is transferred to the seal checker 35. The advance / retreat displacement of the piston rod 35c by the encoder 35e is observed until the predetermined time required for the intrusion has elapsed, and it is determined whether the displacement is less than a predetermined value. If the displacement is less than a predetermined value, it is determined that the packaging bag has no leakage, and the product is determined to be a normal product. The predetermined time is preferably the time until the leading end of the product X reaches the next sorting member 49 ... 49 of the sorting transport mechanism 4. This is to avoid a delay in the response of the sorting operation to the product X which is determined to be a defective seal product in this inspection when the weight and bag length are normal.

Next, the product X discharged from the bag inspection / conveyance mechanism 3 to the sorting / conveyance mechanism 4 has the conveyance rollers 4 of the mechanism 4.
2 ... 42, the product X is further transported to the downstream side. In that case, the product X determined to be a normal product based on the above inspection results at the time of discharging to the sorting / transporting mechanism 4 is the above-mentioned product. The product X that has been determined to be a defective product while traveling straight on the transport rollers 42 ... 42 is discharged from the transport path.

First, the control unit 7 drives the transport roller drive motor 44 to rotate the transport rollers 42 ... 42 so that the product X is transported in the transport direction a, and at the same time, the servo for rotating the sorting member. By controlling the motor 46, the distribution members 49 ...
9a ... 49a face upward, and the transport rollers 42 ... 4
The retracted posture does not project from the transport surface of 2.

Then, in the control unit 7, whether the weight failure is recognized by the weighing machine 24, the seal checker 35 detects a leak in the packaging bag, or the product length sensor 37 detects an abnormality in the bag length. When a defective product corresponding to any one of the above is discharged from the bag inspection transport mechanism 3 to the sorting transport mechanism 4, the sorting member rotating servomotor 46 is controlled to move the sorting members 49 ... 49 to their retracted postures. To the left lateral direction b, whereby the defective product X is laterally moved to the left in the rotation direction b and discharged from the product transport path.

On the other hand, for a normal product having good weight, sealing accuracy, and bag length, the control unit 7 controls the servo motor 46 so that the distribution members 49 ... Maintain the retracted position. As a result, the normal product X goes straight on the transport path by the transport rollers 42 ... 42 and is delivered to the next alignment transport mechanism 5.

The turning operation of the sorting members 49 ... 49 is started when the product X is discharged to the sorting transport mechanism 4, which is calculated based on the time when the product X passes through the product length sensor 37. It has become so.

At this time, the control unit 7
Is designed to change the drive amount of the rotary servomotor 46 according to the bag length of the defective bag length product X. As a result, the number of times of rotation of the distribution members 49 ... 49 is small when the packaging bag is short, and the distribution member 4 is long when the packaging bag is long.
The number of rotations of 9 ... 49 increases, and an appropriate discharging operation can be performed. In particular, even when a large defective packaging bag is transported to the sorting / transporting mechanism 4 due to, for example, an error in a bag-making dimension by a bag-making packaging machine or a defective bag cut, the sorting member 49 is used. … 49 repeats left lateral direction b
By pivoting to, the defective product can be reliably discharged to the outside of the transport path. The drive amount of the rotation servomotor 46, that is, the number of times of rotation of the distribution members 49 ... 49 is calculated and set based on the bag length measured by the product length sensor 37.

Next, the normal products X transported from the sorting and transporting mechanism 4 to the aligning and transporting mechanism 5 further downstream are sequentially overlapped by a predetermined number in the aligning and transporting mechanism 5, and then the front and rear side edges thereof are sequentially superposed. In the aligned state, it is fed toward the box packing mechanism 6.

First, the control unit 7 sequentially conveys the products X on the first conveyor 51 of the aligning and conveying mechanism 5, drops the products X on the second conveyor 52, and discharges them to a predetermined number of products X ... X. When the conveyance and the drop discharge are completed, the drive servomotor 51f of the conveyance conveyor 51 is stopped. At this time, the number of discharged products is counted by detecting the passage of the product X by the discharge timing sensor 55, and the servo motor 51f is stopped after a predetermined time has elapsed since the last product X passed the sensor 55. Further, when the driving of the first conveyor 51 is stopped, the respective upstream drive motors are also stopped,
Make sure that the products X ... X do not fold on the transport path.

On the other hand, the control unit 7 controls the drive servomotors 52f and 53f so as to cooperate with the second transfer conveyor 52 and the third transfer conveyor 53 to repeat the intermittent transfer operation. That is, every time the product X is dropped and discharged from the first conveyor 51,
The two conveyors 52, 53 are intermittently moved forward by a predetermined distance. Then, as shown in FIG. 6, the intermittent movement distance is set to be a distance shorter than the bag length of the product X by a predetermined length m. As a result, the front side edge of the succeeding product X overlaps the rear side edge of the preceding product X by a predetermined length (overlap margin) m, and such intermittent transport operation is repeated. According to the predetermined number of products X ... X, the second and third conveyors 52, 53
In the above, the front and rear side edge portions are aligned in a state of being superposed in order.

The control unit 7 has the first
At the time when the last product X is dropped and discharged from the transport conveyor 51 and is aligned, the second and third transport conveyors 52 and 53 are switched from the intermittent transport operation to the continuous transport operation, and the predetermined number Aligned Products X ... 4th at a stretch
While being sent to the transfer conveyor 54, the transfer conveyor 5
The drive amount of the drive servomotor 54f of No. 4 is controlled, and these commodities X ... X are carried in to the boxing work part a. Then, the commodities X ... X are packed in the cardboard box Y at a high density by the cartoning mechanism 6 in the aligned state where the commodities X are overlapped.

In this case, the control unit 7
When the rear ends of the aligned products X ... X are discharged from the second transfer conveyor 52 and transferred to the third transfer conveyor 53 during continuous transfer of the aligned products X ... X to the fourth transfer conveyor 54, The second transfer conveyor 52 is switched from the continuous transfer operation to the intermittent transfer operation. That is, the product X falls from the first conveyor 51 without waiting for the rear end of the aligned products X ... X that are being continuously conveyed to be discharged from the downstream third conveyor 53 to the fourth conveyor 54. Only the second transport conveyor 52 on the upstream side to be discharged is first switched from the continuous transport operation to the intermittent transport operation. As a result, the previous set of products X ... X is the third product on the downstream side.
It is still the fourth due to the continuous transport operation of the transport conveyor 53 only.
It is possible to restart the product discharge operation of the first transfer conveyor 51 while the product is being transferred to the transfer conveyor 54, and to quickly start the alignment work for the next set of products X ... X.

As a result, the stop time of the transfer work of the first transfer conveyor 51 is shortened, and the standby time of the work stop of each of the upstream side mechanisms 2, 3 and 4 is also shortened, so that the boxing apparatus 1 is stopped. The delay of the whole work is suppressed, and the high-speed processing of the box packing work can be achieved.

At this time, the control unit 7
In general, the second transport conveyor 52 is switched from the continuous transport operation to the intermittent transport operation, and at the same time, the transport operation of the first transport conveyor 51 is restarted. Before switching from the continuous transport operation to the intermittent transport operation, the products X ... X that are being continuously transported
At the time when the rear end portion of the next set remains on the second transfer conveyor 52 for a length corresponding to one intermittent movement distance, the first product X of the next set falls on the second transfer conveyor 52. You may restart the conveyance operation of the 1st conveyance conveyor 51 so that it may be discharged. By doing so, the forward movement of the first product X after the fall is performed on a first-come-first-served basis, and the processing speed of the boxing device 1 can be further increased.

[0069]

As described above, according to the present invention,
Secondly, after arranging the packed products discharged from the first transfer conveyor in order, and then transferring them toward the boxing mechanism on the downstream side.
The transport conveyor is composed of a plurality of conveyors arranged in a row in the product transport direction, and these conveyors are switched between intermittent drive and continuous drive by the control means, thereby aligning the products in a stacked state, In addition, it will be transported toward the boxing work section.

When the products are discharged from the upstream side conveyor and transferred to the downstream side conveyor during the transportation of the products by continuously driving these conveyors constituting the second transfer conveyor, the upstream side conveyor at that time point. Is switched from the continuous drive to the intermittent drive, the first conveyor that discharges the products to the second conveyor is until the products are discharged from the entire second conveyor, that is, the products are discharged from the downstream conveyor. Until that time, the carrying operation does not have to be stopped, and when the product is discharged from the upstream side conveyor and the upstream side conveyor is switched to the intermittent drive, the loading operation can be restarted early. Therefore, the work standby time of the upstream side device including the first conveyor, the bag making and packaging machine, etc. can be shortened, and as a result, the processing speed of this type of boxing machine can be increased. .

In this case, in particular, according to the third aspect of the invention, the product being conveyed is discharged from the upstream side conveyor and is being conveyed onto the upstream side conveyor before the upstream side conveyor is switched to the intermittent drive. When the trailing edge of the product remains for a length corresponding to one intermittent driving distance, the transport operation of the first transport conveyor is restarted so that the next product is discharged to this upstream conveyor. , Without waiting for the product being conveyed from the upstream conveyor to be completely discharged, to lead the next product by the distance for moving it forward by intermittent driving after the discharge while continuously driving the upstream conveyor. As a result, the temporary stop period of the upstream side device or the work standby time is further shortened.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the overall configuration of a boxing device according to an embodiment of the present invention.

FIG. 2 is an enlarged partial cross-sectional view showing a configuration on the most upstream side of the boxing device.

FIG. 3 is a partial cross-sectional plan view showing the configuration of a sorting / conveying mechanism of the boxing device.

4 is a vertical cross-sectional view taken along the line BB of FIG.

FIG. 5 is a rear side view of the homologous transport mechanism.

FIG. 6 is an enlarged front view showing a configuration of an alignment / conveyance mechanism of the boxing device.

FIG. 7 is a diagram showing a configuration of a boxing mechanism of the boxing device.
FIG. 4 is a view from the line AA of FIG.

FIG. 8 is a control system diagram of the box packaging device.

FIG. 9 is an explanatory diagram of a problem in the conventional boxing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boxing device 2 Weighing transport mechanism 3 Bag inspection transport mechanism 4 Sorting transport mechanism 5 Aligning transport mechanism 6 Boxing mechanism 7 Control unit 51 First transport conveyor 52 Second transport conveyor 53 Third transport conveyor

Claims (4)

[Claims] 1. A first conveyor that sequentially conveys packaged products to a downstream side, a second conveyor that further conveys products discharged from the first conveyor to a further downstream side, and a second conveyor. A boxing device having a boxing mechanism for boxing the product discharged from the conveyor in a predetermined container, wherein the second transfer conveyor is composed of a plurality of conveyors arranged in a column in the transfer direction of the product. A control means for controlling the conveyor is provided, and the control means intermittently drives the second transfer conveyor every time the product is discharged from the first transfer conveyor to sequentially arrange the products on the second transfer conveyor. After that, by continuously driving the second conveyer, the aligned products are conveyed toward the boxing mechanism on the downstream side, and during this conveyance, the product is transferred to the second conveyer. A box packing device, wherein when the sheet is discharged from the upstream conveyor, the upstream conveyor is sequentially switched to intermittent driving. 2. A first conveyor that sequentially conveys packaged products to the downstream side, a second conveyor that further conveys the products discharged from the first conveyor to the further downstream, and the second conveyor. A boxing device having a boxing mechanism for boxing the product discharged from the conveyor in a predetermined container, wherein the second transfer conveyor is composed of a plurality of conveyors arranged in a column in the transfer direction of the product. A control means for controlling the conveyor is provided, and the control means intermittently drives the upstream side conveyor of the second transfer conveyor every time the product is discharged from the first transfer conveyor to sequentially transfer the products on the upstream side conveyor. After being aligned, the second transport conveyor is continuously driven to transport these aligned products toward the boxing mechanism on the downstream side. A box packing device characterized by switching the upstream conveyor to intermittent drive when the upstream conveyor is discharged from the conveyor. 3. The control means also controls the transfer operation of the first transfer conveyor to temporarily stop the transfer operation of the first transfer conveyor from the start point of continuous drive of the upstream transfer conveyor, Before switching to intermittent driving, at the time when the rear end of the product being conveyed remains on the upstream side conveyor for a length corresponding to one intermittent driving distance,
The boxing device according to claim 1 or 2, wherein the transport operation of the first conveyor is restarted so that the next product is discharged from the first conveyor to the upstream conveyor. 4. The plurality of conveyors, the first conveyor and the second conveyor, are each driven by a servo mechanism, and the conveyor operation is controlled by the control means via the servo mechanism. The boxing device according to any one of claims 1 to 3.