JP2515183Y2 - Box top cover device - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention is a box body used for attaching an upper lid to a box made of cardboard in which a large number of fruits such as cuys and strawberries are packed. Top cover device.

(B) Conventional Technology As an upper lid covering device for attaching the upper lid to the above box,
For example, a mechanism as shown in FIG. 3 can be considered.

That is, after the roller conveyor 43 is rotationally driven in the transport direction to transport the box bodies 8 stacked in multiple stages to the upper lid covering position, the feeding rollers 44 and 45 are rotationally driven in the feeding direction to the upper lid stacking section 46. One sheet of the lowermost upper lid 4 stacked on a large number is fed out, and the rear end portion of the upper lid 4 is pushed by the pusher 47, and the upper lid 4 is transferred to the upper surface of the uppermost box body 8 conveyed to the upper lid covering position. After that, the air cylinder 48 is driven to bend the both side edges of the upper lid 4 transferred to the box body 8 into a bending plate 49.
There is an upper lid covering device 50 that is bent downward by.

However, the above-described upper lid covering device 50 is effective when the stacking of the boxes 8 has a certain number of stages such as five, as in the case of an upper lid covering for one item, for example, which is packaged in a box or strawberry. Can be expected as a simple top cover device, for example, by using it as a top cover for a plurality of items,
If the number of steps or the height of the box 8 is changed, the upper lid stacking part 46 or the roller conveyor 43 must be adjusted up and down according to the stacking height of the box 8, and every time the number of stacking steps of the box 8 is changed. Since one of them is adjusted up and down, it takes time and labor to adjust the height, which not only deteriorates the operation efficiency of the device, but also
There is a problem that the number of stacking stages of the box body 8 is restricted.

On the other hand, as described in Japanese Patent Laid-Open No. 63-12408, an upper lid, which is taken out from a magazine by a suction cup, is formed in the channel portion of the lid attaching means by a pusher provided at the rod end of the actuator. There is a transport case automatic filling device configured to be inserted between the recesses, and the entire lid attaching means is moved downward by an actuator to cover the upper portion of the case waiting in advance downward with the upper lid.

However, this conventional device is premised on the case having a one-stage case, and when the cases are stacked in multiple stages or the number of stages is changed, the vertical height of the upper lid supplied to the lid attaching means by the pusher is increased. Since there is no means for controlling the height and the height of the lid attaching means itself, it is impossible to cover the upper portion of the case smoothly and reliably such that the number of stacking stages is changed. Had.

(C) Problem to be Solved by the Invention This invention detects the stacking height of boxes stacked in multiple stages by a detection means, and based on this detection output, responds to the stacking height of the boxes. By making it possible to move up and down the upper lid elevating means and the upper lid receiving position of the upper lid covering means, it is possible to easily change the number of stacking stages of the boxes and improve the operation efficiency of the device. An object of the present invention is to provide an upper lid covering device for a box body that can smoothly and reliably cover the upper surface of the box body even if the number of stacking stages is changed.

(D) Means for Solving the Problem The present invention is a box top cover device for attaching a top cover extended from a top cover stacking portion to the top surface of the topmost box body stacked in a large number of stages. Top lid feeding means for feeding one top lid from the top lid stacking portion, top lid raising and lowering means for raising and lowering and feeding the top lid fed out by the top lid feeding means to the upper side of the next-stage box body with a vertical step Based on the detection output of the detection means of the detection means for detecting the stacking height of the box bodies stacked in a large number, An upper lid covering device of a box body, comprising: a control means for controlling an elevating position of the upper lid elevating means and an upper lid receiving position of the upper lid covering means.

(E) Operation According to this invention, while the above-mentioned detecting means detects the stacking height of the boxes stacked in a large number of stages, the above-mentioned top-lid feeding-out means allows the top lid to be taken out from the top-lid stacking portion. After being transferred to the elevating means, the upper lid elevating means and the upper lid covering means are controlled to the elevating position and the upper lid receiving position by the drive of the control means based on the detection output of the detecting means, and then the upper lid elevating means covers the upper lid. The upper lid is transferred to the means, and the upper lid is put on the upper surface of the uppermost box bodies stacked in multiple stages by driving the upper lid covering means.

(F) Effect of the invention As described above, the upper and lower positions of the upper lid elevating means and the upper lid covering means are adjusted according to the stacking height of the box bodies, and the upper lids are covered on the upper surfaces of the uppermost box bodies stacked in multiple stages. Since it can be worn, the number of stacking stages of the box body can be easily changed, the work time required for height adjustment between the upper lid stacking part and the conveyor as in the conventional example can be reduced, and the operation efficiency of the device can be improved. You can

In addition, since it has a unique configuration that raises and lowers the lid covering means side, there is no need for lifting equipment or complicated adjustment work for raising and lowering the lid stacking section or conveyor, simplifying the overall configuration of the device, and producing the device. The cost can be reduced.

Moreover, the above-mentioned detection means detects the stacking height of the box bodies stacked in a large number of stages, and based on this detection output, the above-mentioned control means determines the lifting position of the upper lid lifting means and the upper lid receiving position of the upper lid covering means. Since the control is performed, there is an effect that even if the number of stacking steps of the box body is increased or decreased, the upper surface of the box body can be smoothly and surely covered with the upper lid.

(G) Embodiment One embodiment of the present invention will be described in detail below with reference to the drawings.

The drawings show an upper lid covering device for covering an upper lid on a plurality of corrugated cardboard boxes, and in FIGS. 1 and 2, the upper lid covering device 1 includes an upper lid feeding unit 2 arranged in an upper stage of the device. Is driven to feed one square upper lid 4 stacked, and after the upper lid 4 is transferred to the upper lid elevating unit 3 stopped at the raised position, the elevating mechanism 5 is driven to move the upper lid elevating unit 3 Lower to the lowering position, transfer the upper lid 4 to the upper lid covering unit 6 arranged in the lower stage of the device,
On the other hand, the roller conveyor 7 is driven to convey the boxes 8 stacked in a large number to the upper lid covering position set during conveyance, and then the upper lid covering unit 6 is driven to move the boxes 8 stacked in the uppermost stage. The upper lid 4 is attached to the upper opening of the.

In the upper lid feeding unit 2 described above, the pusher 10 is arranged at the rear portion of the upper lid stacking portion 9 provided in the upper stage of the apparatus, and the air cylinder 11 connected and fixed to the rear end portion of the pusher 10 is driven to drive the upper lid stacking portion 9 Only one of the lowermost upper lids 4 stacked on each other is pushed forward.

At the front portion of the upper lid stacking section 9, feed rollers 12 and 13 are vertically supported so as to be vertically supported and pivotally supported, and the feed rollers 12 and 13 are rotated in the feeding direction so that the upper lid 4 extruded from the upper lid stack section 9 is rotated. The feeding rollers 12 and 13 hold the feeding rollers 12 and 13 and sequentially feed them forward.

A pusher plate 14 is swingably supported on upper portions of the feeding rollers 12 and 13 on the feeding side, and an air cylinder 15 connected and fixed to an upper end portion of the pusher plate 14 is driven to feed one sheet of the upper lid 4. It swings back and forth between an allowable standby position (solid line position) and a transfer position (virtual line position) for transferring the upper lid 4 to the upper lid lifting unit 3 described later.

In the above-described upper lid lifting unit 3, the upper lid lifting base 16 formed in a letter shape is formed with the upper lid receiving grooves 16a, 16a facing each other at lower end portions on both sides, and the pusher plate 17 is provided in the upper center portion of the upper lid lifting base 16. A standby position (an imaginary line position) in which the air cylinder 18 pivotably supported and connected to and fixed to the upper end of the pusher plate 17 is allowed to insert the upper lid 4 into the upper lid receiving grooves 16a, 16a. And swings back and forth to a transfer position (solid line position) where the upper cover 4 is transferred to the upper cover covering unit 6 described later.

The lifting mechanism 5 is a sprocket 1 that is vertically supported.
Chains 21 are stretched between 9 and 20, and these chains are
The end portions of 21, 21 are connected and fixed to the upper lid elevating table 16, and the upper lid elevating table 16 is vertically slidably engaged with a vertically extending guide rail 22 to provide an elevating motor arranged on the upper part of the apparatus.
Drive force of 23, sprockets 24, 25 and chain 2
The chains 21 and 21 are rotated forward and backward via 6 to move the upper lid 4 to the upper position (phantom line position) where the upper lid 4 is transferred from the upper lid feeding unit 2 and the upper lid covering unit 6 described later. Stop moving up and down to the descent position (solid line position).

The above-described lifting stop control is executed based on the detection of the stacking height position of the box body 8 by the photoelectric sensors A _{1 to} A ₅ described later.

A stopper 27 for restricting the transfer position of the upper lid 4 is provided in the vicinity of the front end portion of the upper lid lift table 16 stopped at the above-mentioned raised position.

In the above-mentioned upper lid covering unit 6, supporting plates 29, 29 are vertically provided at both end portions of the lower surface side of the upper lid receiving base 28, and the lower end portions of these supporting plates 29, 29 have a length corresponding to one side edge portion of the upper lid 4. L formed in
The letter-shaped upper lid receiving plates 30 and 30 are opposed to each other and axially supported, and between the upper end portions of the upper lid receiving plates 30 and 30 and the lower end portions of the screw shafts 31 and 31 vertically provided at both ends of the upper lid receiving base 28. The locked coil springs 32, 32 always urge and pull in the direction returning to the solid line posture in the figure.

Bending guides 33, 33 for bending the both side edges of the upper lid 4 downward are provided at positions inside the upper lid receiving plates 30, 30 at intervals corresponding to the lateral width dimension of the box body 8. are doing.

Further, four guide shafts 34 are vertically slidably arranged at predetermined positions inside the folding guides 33, 33 so as to be vertically slidable, and the guide shafts 34, 34 are vertically provided on both sides.
An upper lid pressing plate 35 is erected and fixed between the lower ends of the upper lid pressing plates 35, and coil springs 36, 36 inserted onto the guide shafts 34, 34 constantly urge the upper lid pressing plate 35 to be pushed downward.

In the upper lid receiving base 28, an air cylinder 38 is vertically fixed to a central portion of an upper surface of a mounting plate 37 installed above the roller conveyor 7, and the air cylinder 38 is connected and fixed to a central portion of an upper surface of the upper lid receiving base 28. By driving this air cylinder 38,
There are an ascending position (solid line position) that is horizontal to the upper lid lift table 16 stopped at the descending position, and a descending position (virtual line position) at which the upper lid 4 is attached to the uppermost box 8 conveyed to the upper lid covering position. Stop moving up and down.

The above-described lifting stop control is executed based on the detection of the stacking height position of the box body 8 by the photoelectric sensors A _{1 to} A ₅ described later.

A stopper 39 for restricting the transfer position of the upper lid 4 is provided close to the front end portion of the upper lid pedestal 28 stopped at the above-mentioned raised position.

Here, the upper lid covering unit 6 is an air cylinder.
By controlling 38, the whole unit can be adjusted up and down according to the stacking height of the boxes 8.

At the upper lid covering position set during the transportation of the roller conveyor 7 described above, the regulation plates 40 and 41 are disposed so as to face both side surfaces of the box body 8 whose front is in the transportation direction. The arranged regulating plate 40 is fixed at a fixed position, and the air cylinder 42 is connected and fixed to the center of the rear surface of the regulating plate 41 arranged on the right side of FIG.
By driving the air cylinder 42, the both sides of the box body 8 are
It is clamped and fixed in position by the restriction plates 40 and 41.

A photoelectric sensor as a detecting means is provided on the side portion of the above-mentioned top cover position so as to face the side surface of each of the box bodies 8 ...
A _{1 to} A ₅ are arranged in order from the bottom, and these photoelectric sensors A _{1 to} A ₅
Based on the detection output of the number of stacking steps of the box body 8 by the above, the upper lid receiving plate 30 at the raised position (first
The standby position for receiving the upper lid 4) is set, and the lower position of the upper lid receiving grooves 16a, 16a of the upper lid lifting unit 3 (the solid line position in FIG. (The position for supplying) is driven, and the raising / lowering motor 23 is driven forward / reversely to raise / lower the upper lid raising / lowering body 16 in accordance with the stacking height of the uppermost box body 8.

The illustrated embodiment is configured as described above, and
The attaching operation of the upper lid 4 by the upper lid covering device 1 will be described.

First, the stacked box bodies 8 conveyed by the roller conveyor 7 are detected by the photoelectric sensors A _{1 to} A _{5 as} to whether the height position thereof is from one step to five steps. With this detection, for example, When it is opposed to 5 steps, the top cover unit 6
The upper position of the upper lid receiving plate 30 (the initial position for receiving the upper lid 4 and executing the upper lid covering operation, which is the position indicated by the solid line in FIG. 1), that is, the initial control position of the air cylinder 38 is set. The lower position of the upper lid receiving grooves 16a, 16a with respect to the upper lid receiving plate 30 (the transfer position for transferring the upper lid 4 to the upper lid receiving plate 30 at the solid line position in FIG. 1), that is, the lifting mechanism. The descent control position of 5 is set.

Then, as shown in FIG. 1, the air cylinder 11 of the upper lid feeding unit 2 arranged in the upper stage of the apparatus is driven to push out the lowermost upper lid 4 stacked on the upper lid stacking portion 9 with the pusher 10. Feeding roller pivotally supported on the feeding side
The front end of the upper lid 4 is inserted between 12 and 13, and the feeding rollers 12 and 13 are rotationally driven in the feeding direction to feed one upper lid 4, and then the air cylinder 15 is driven to drive the rear end of the upper lid 4. Is pushed from the rear by the pusher plate 14 and the upper lid 4 is transferred to the upper lid receiving grooves 16a, 16a of the upper lid lifting base 16 stopped at the raised position.

On the other hand, as also shown in FIG. 2, the roller conveyor 7 is rotationally driven in the transport direction to transport the box bodies 8 stacked in multiple stages to the upper lid covering position during transport, and then the air cylinder 42 is driven. The box body 8 is clamped by the restriction plates 40 and 41 and fixed in position.

At the same time, the photoelectric sensors A _{1 to} A ₅ provided at the side positions detect the number of stacking stages of the box body 8. Therefore, the elevator motor 23 is corrected based on the detection output of each photoelectric sensor A _{1 to} A _5. After reverse driving, the upper lid lifting table 16 of the upper lid lifting unit 3 is lowered to a set lower position which is horizontal with the upper lid receiving table 28 of the upper lid covering unit 6, and then the air cylinder 18 is driven to drive the rear end of the upper lid 4. The pusher plate 17 pushes the rear part from the rear side, and the upper cover receiving plate 28 stopped at the raised position 28
The upper lid 4 is transferred to 0.

Next, the air cylinder 38 of the upper lid covering unit 6 arranged in the lower stage of the device is driven to lower the upper lid receiving base 28 to the set lowering position, and the upper surface of the uppermost box body 8 conveyed to the upper lid covering position. Press the upper lid 4.

At the same time, against the coil slits 36, 36, the upper lid pedestal 2
While pushing up the upper lid pressing plates 35, 35 vertically provided at the central portion of 8, the uppermost box body 8 is relatively pushed between the folding guides 33, 33 vertically provided on both sides, and these folding guides 33 The side edges of the upper lid 4 are bent and guided downward by 33 and 33.

At this time, both side edge portions of the upper lid 4 come into contact with the upper lid receiving plates 30, 30 pivotally supported on the lower surface side end portions of the upper lid receiving base 28, and resist the coil springs 32, 32, and these upper lid receiving plates 30, 30 Is slightly rotated downward, bending of both side edges of the upper lid 4 is permitted, and both edge portions of the upper lid 4 can be bent toward both side surfaces of the box body 8 in an L-shape. The deposition work is completed.

After that, the air cylinder 38 is driven to vertically raise the upper lid pedestal 28, and the roller conveyor 7 is rotationally driven in the conveying direction to convey the box body 8 with the upper lid 4 attached thereto to the next work process.

The upper lid 4 may be bonded and fixed to the upper surface of the box body 8 with an adhesive or the like.

In this way, the upper lid elevating unit 3 and the upper lid covering unit 6 are moved up and down according to the stacking height of the boxes, and the upper lid 4 can be attached to the upper surfaces of the uppermost boxes 8 stacked in multiple stages. The number of stacking steps of the box body 8 can be easily changed, and the working time required for adjusting the heights of the upper lid stacking portion 46 and the roller conveyor 43 as in the conventional example is reduced to improve the operation efficiency of the apparatus. be able to.

Further, since the lifting / lowering unit 3 has a peculiar structure, the lifting device for lifting the upper lid stacking portion 9 or the roller conveyor 7 and complicated adjustment work are not required, and the structure of the entire device is simplified, and the device is simplified. The production cost can be reduced.

Moreover, the above-mentioned detection means (see photoelectric sensors A _{1 to} A ₅ ) detects the stacking height of the boxes 8 stacked in multiple stages, and based on this detection output, the above-mentioned control means (the lifting mechanism 5 and the air). Since the cylinder 38) controls the ascending / descending position of the upper lid elevating means (see the upper lid elevating unit 3) and the upper lid receiving position of the upper lid covering means (see the upper lid covering unit 6), the number of stacking steps of the box body 8 is changed. Even in such a case, there is an effect that the upper surface of the upper cover 4 can be covered smoothly and surely.

In the correspondence between the structure of the present invention and the above-mentioned embodiment, the upper lid feeding means of the present invention is the upper lid feeding unit 2
Similarly, the upper lid lifting means corresponds to the upper lid lifting unit 3, the upper lid covering means corresponds to the upper lid covering unit 6, the detecting means corresponds to the photoelectric sensors A _{1 to} A ₅ , and The means corresponds to the lifting mechanism 5 and the air cylinder 38, but the present invention is not limited to the configuration of the above-described embodiment.

For example, the upper lid feeding unit 2 is arranged at a position lower than the height position of the box body 8, and the upper lid 4 received at the lower position by the upper lid elevating unit 3 is supplied to the upper lid covering unit 6 at the higher position. Good.

Further, the entire upper lid covering unit 6 may be lifted and lowered by the lifting mechanism 5 in accordance with the stacking height of the boxes 8 described above.

Further, a photoelectric sensor (not shown) is attached to the upper lid pedestal 28 of the upper lid covering unit 6, and the photoelectric sensor detects the uppermost box bodies 8 stacked in three or four stages, and the box bodies 8 are stacked. The upper lid pedestal 28 may be moved up and down according to the height.

In these cases, the effect can be exhibited when the number of stages of the box body 8 flowing through the roller conveyor 7 is irregular.

[Brief description of drawings]

FIG. 1 is a front view of the upper lid covering device of the present invention on the carrying side, FIG. 2 is a right side view of the upper lid covering device, and FIG. 3 is a front view of the upper lid covering device on the carrying side. 2 ... Top lid feeding unit 3 ... Top lid lifting unit, 4 ... Top lid 5 ... Lifting mechanism, 6 ... Top lid covering unit 8 ... Box body, 9 ... Top lid stacking section 38 ... Air cylinder, A ₁ ... A ₅ ... Photoelectric sensor

Claims (1)

(57) [Scope of utility model registration request] 1. An upper lid covering device for a box body, wherein an upper lid (4) fed from an upper lid stacking portion (9) is attached to the upper surface of the uppermost box bodies (8) stacked in multiple stages, The upper lid feeding means (2) for feeding out one upper lid (4) from the upper lid stacking portion (9) and the upper lid (4) fed by the upper lid feeding means (2) are the upper part of the next box body having a step difference in the vertical direction. Upper lid raising and lowering means (3) for raising and lowering to the side and upper lid covering means (6) for attaching the upper lid (4) supplied by the upper lid raising and lowering means (3) to the upper surface of the uppermost box (8). When a detection means for detecting the number stages stacked above box body stack height of _{(8) (a 1) ~} (a 5), based on the detection output of said detecting means _{(a 1) ~ (a 5} ) Control means (5) (38) for controlling the elevation position of the upper lid elevating means (3) and the upper lid receiving position of the upper lid covering means (6).
Box top cover device with and.