JP2709685B2 - Structure of defective product discharging device in automatic box making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for rejecting defective products in an automatic box making machine which manufactures a folded paper box by carrying out steps such as folding and gluing while transferring material paper cut into an appropriate shape. It is related to the structure of.

[0002]

2. Description of the Related Art Conventionally, inspection and discharge of defective products in a paper box manufactured by an automatic box making machine are performed by a worker's check after the paper box is carried out of the box making machine, or An inspection sensor is provided in the middle of the box making machine to notify the presence of defective products with a buzzer or warning light, etc.
This rejection was also done manually by the workers after unloading the paper box.

[0003]

However, finding and eliminating a defective product in manual work after unloading a paper box requires a certain amount of time and effort based on experience. There was a problem that it was not possible to accurately exclude defective products.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a belt conveyor for a production line for forming a folded paper box with a process section such as bending, gluing and pasting while transferring material paper cut into an appropriate shape, In an automatic box making machine having a carry-out line for sandwiching and feeding the paper box following the belt conveyor, a gap is provided between a rear end of the belt conveyor and a leading end of the carry-out line. An extruding mechanism is provided in the vicinity of the belt conveyor to push the leading end of the defective product passing through the gap and drop it from the gap, and to rotate the rear end of the belt conveyor at both ends of the vertical link plate in the front-rear direction. And a linking mechanism for tilting the link plate. The tilting mechanism for tilting the link plate is connected to the link plate so as to widen a gap between the belt conveyor and the discharge line when the pushing mechanism is operated. A manner, it is intended to solve such problems.

[0005]

According to the present invention, there is provided a process for forming a paper box by supplying material paper cut into an appropriate shape from a supply side of a belt conveyor constituting a production line and passing through each process section such as bending, gluing and sticking. When a defective product is generated in the above, the gap provided at the rear end of the belt conveyor and the front end of the carry-out line is expanded, and when the defective product passes through the gap, the pushing mechanism is operated to expand the defective product. This ensures that the material is pushed down and discharged in the gap so that it does not mix between normally formed paper boxes.

[0006]

An embodiment will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a schematic view showing an embodiment of an automatic box making machine.
The automatic box making machine receives the supply of the material paper P which is cut into an appropriate shape designed in advance and, if necessary, is adhered to a place where a seal or the like is determined, and arranges the material paper P in parallel. A production line 2 in which a required portion is bent and glued and pasted while being transported by a belt conveyor 1 to form a folding paper box B, and a paper box B that has been formed. It is constituted by an unloading line 4 which is received by roller conveyors 3 arranged above and below, nipped and sent while adjusting the volume, and moves to a loading place. The belt conveyor 1 of the production line 2 is provided with process sections 5a, 5b, 5c,...
At the outlet side of a, 5b, 5c,..., inspection sensors 6a, 6b, 6c,.
Is provided. Further, an inspection sensor 6y for detecting the attachment position of the bar code printed on the material paper P or the sticker before the molding process section, the attachment of the wrapping material cutting blade in the wrapping box, and the supplied material paper P There may be provided an inspection sensor 6z or the like for detecting whether or not two sheets are overlapped. Note that the above inspection sensors are selected and used as inspection targets from optical sensors, limit sensors, and the like.

In the present invention, as shown in FIG. 2, a gap 7 is provided between the rear end of the belt conveyor 1 constituting the production line 2 and the tip of the roller conveyor 3 of the unloading line 4, and the belt above the gap 7 is provided. An L-shaped push rod lever 8 is provided on the vicinity of the side of the conveyor 1 so as to pivotally support the intermediate portion of the long axis 8a and rotate the tip of the short axis 8b vertically toward the gap 7. An extruding mechanism in which a rod 10a of a rotating cylinder 10 is connected to the other end of the long shaft 8a is installed.

Belt conveyor 1 forming one end of gap 7
The rear end is supported by rotating rolls 11a and 11b attached to upper and lower ends of a vertical link plate 14 so as to be tiltable in the front-rear direction. 13 is an intermediate rotation shaft. The link plate 14
A cylinder mechanism 15 for inclining the link plate 14 is connected to the lower end extension 14a of the roller, and in the normal state, the upper end of the link plate 14 is inclined to the roller conveyor 3 so that the rotating roll 11a approaches the roller conveyor 3 and the gap 7 Is extremely narrow, so that the delivery to the carry-out line 4 is reliably performed regardless of the length of the paper box B. Reference numeral 12 denotes inspection sensors 6a, 6b, 6c,.
a control unit for automatically operating the cylinder 10 and the cylinder mechanism 15 in response to a defect detection signal from the y, 6z;
12a is a paper detection sensor for confirming the proximity of the paper box. When the defective paper box detected by the defect detection sensor, that is, the defective product B1 passes through the end portion of the belt conveyor 1, the control of the control unit 12 causes the cylinder mechanism to move in conjunction with the operation of the pushing mechanism as shown in FIG. 15 to incline the link plate 14 in the reverse direction so that the belt conveyor 1
Defective product B by expanding the gap 7 between the roller conveyor 3
1 is pushed down below the widened gap 7 to be fed and discharged.

When the automatic paper making machine is operated to supply the material paper P, the material paper P is first inspected by a bar code printing, a sticking position such as a seal, an attachment sensor for detecting the attachment of the lap material cutting blade in the wrap packaging box, and the like. Process sections 5a, 5b, 5c such as bending, gluing, sticking, etc., through a detection band of 6y and a detection band of an inspection sensor 6z for checking whether or not two sheets are overlapped.
, Passing through each process unit 5a, 5b, 5c... Various inspection sensors 6a, 6b, 6c provided on the outlet side.
・ If no defect is found, fold the paper box B
, Which is transported from the belt conveyor 1 constituting the production line 2 to the unloading line 4, but is not detected as defective by any of the inspection sensors 6a, 6b, 6c... 6y, 6z. When the non-defective product B1 reaches the gap 7 between the belt conveyor 1 and the unloading line 4, as shown in FIG. 3, the rod 10a of the cylinder 10 is controlled by the control unit 12, which has received a failure detection signal from the inspection sensor in advance. It contracts and rotates the push lever 8, and the short axis 8 of the push lever 8
Since the leading end of the defective product B1 is pushed down by the leading end of b, the cylinder mechanism 15 is operated in conjunction with the operation of the pushing lever 8, and the gap 7 between the belt conveyor 1 and the roller conveyor 3 is expanded. Defective B regardless of the length of good product
1 is surely pushed down into the widened gap 7 and discharged. After the defective product B1 is discharged, the push rod lever 8 and the cylinder mechanism 15 immediately return to their original positions and prepare for the next operation, so that the completed paper box B is sent to the carry-out line 4 as usual. In some cases, a transfer conveyor for discharged products may be provided below the gap 7.

[0011]

As described above, according to the present invention, a gap is provided between the belt conveyor constituting the production line and the unloading line, and the tip of the defective product passing through the gap near the belt conveyor side of the gap. And the back end of the belt conveyor is supported by rotating rolls attached to both ends of the vertical link plate so as to be tiltable in the front-rear direction.
A tilting mechanism for tilting the link plate is provided to widen the gap between the belt conveyor and the carry-out line when the pushing mechanism is operated, so that defective products generated at the time of forming the paper box can be smoothly moved under the widened gap. In addition to being reliably pushed down and ejected, the paper box formed under normal conditions can be reliably sent to the carry-out line irrespective of its length by shortening the gap.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one embodiment of an automatic box making machine.

FIG. 2 is an enlarged view of a main part showing an embodiment of the present invention.

FIG. 3 is a diagram showing an operation state of the same.

[Explanation of symbols]

1 is a belt conveyor 2 is a production line 3 is a roller conveyor 4 is a take-out line 5a, 5b, 5c... Are bending, gluing and sticking processes 6a, 6b, 6c... 6y, 6z are inspection sensors 7 Is the gap 8 is the push rod lever 8a is the long axis 8b is the short axis 9 is the axis 10 is the cylinder 10a is the rod 11a, 11b is the rotating roll 12 is the control unit 12a is the paper detection sensor 13 is the rotating axis 14 is the link plate 14a is the lower end Extension 15 is a cylinder mechanism

Claims (1)

(57) [Claims] 1. A belt conveyor of a production line for forming a folded paper box with a process section such as folding, gluing and sticking while transferring material paper cut into an appropriate shape, and the belt conveyor followed by the belt conveyor. In an automatic box making machine having an unloading line for sandwiching and feeding a paper box, a gap is provided between the rear end of the belt conveyor and the tip of the unloading line, and the gap is provided near the belt conveyor side of the gap. An extruding mechanism is provided for pushing the leading end of the defective product passing through the gap and dropping it from the gap, and the rear end of the belt conveyor is supported by rotating rolls attached to both ends of a vertical link plate so as to be tiltable in the front-rear direction. A tilting mechanism for tilting the link plate is connected to the link plate, and a gap between the belt conveyor and the unloading line is expanded when the pushing mechanism is operated. The structure of the defective product discharge device in the moving box machine.