JPH0625467Y2 - Cardboard stacking device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention allows the number of cardboards to be continuously fed on the conveyor by placing the front part on the rear part of the preceding cardboard and continuously feeding it on the conveyor. The present invention relates to a cardboard stacking device capable of stacking sheets one by one.

[Prior Art] Generally, in a carton manufacturing process for paper boxes, various cardboards such as blanks, semi-processed sheets, and folded sheets are conveyed at high speed on a conveyor. .

By the way, these cardboards may be piled up and down every several sheets on a conveyor, and in such a case, a cardboard stacking device is used.

The conventional stacking device of this type is a kicker bar in which the front part is placed on the rear part of the preceding cardboard and the cardboard that is continuously fed on the conveyor is set to a speed faster than the speed of the conveyor. While being extruded to the front, the sheets are stacked on the conveyer conveyor every several sheets.

[Problems to be Solved by the Invention] However, in the above-described stacking device, the lower surface of the cardboard having the front part placed on the rear part of the last cardboard that is pushed out by the kicker bar is pierced by the tip of the kicker bar. There is a problem that the cardboards are damaged and the paper is pushed forward.

Further, in the above-mentioned stacking device, there is a problem in that the operation of pushing out cardboard with the kicker bar is not stable, and this instability causes mechanical troubles.

Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technology, and to extrude cardboard with a kicker bar,
An object of the present invention is to provide a cardboard stacking device that can reliably push out cardboard without damaging the cardboard.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention uses a kicker for a cardboard that is continuously fed on a conveyor with a front part placed on the back of the preceding cardboard. In a cardboard stacking device configured to stack every several sheets on the conveyor while pushing forward with a bar, a cardboard with a front part placed on the rear part of the last cardboard that is pushed out by the kicker bar. A push-up mechanism for temporarily pushing up the rear end portion of the rear end, and an air suction mechanism for adsorbing the front end portion of the thick paper having a front portion on the rear end of the rearmost thick paper and pulling it up. , A sensor for counting the number of cardboards to be accumulated on the conveyor, and a transfer for carrying the sensor and the air suction and transferring them in the same direction at the same speed as the conveyor. And a sending mechanism.

[Operation] According to the present invention, when the cardboard is extruded by the kicker bar, the cardboard having the front part placed behind the rearmost cardboard to be extruded is lifted upward.

Therefore, even if the kicker bar is extruded at a high speed, the kicker bar does not damage the cardboard or extrude the next cardboard forward, and does not cause any mechanical trouble.

[Embodiment] An embodiment of a cardboard stacking apparatus according to the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 indicates a conveyor.

This conveyor 1 conveys cardboards 2,
These cardboards 2 are conveyed such that the front part is placed on the rear part of the preceding cardboards 2.

Below the conveyor 1, a pair of front and rear sprockets 3 are provided.
A pair of upper and lower chains 5 and 5 wound between the chains 5 and 5 are arranged, and a kicker bar 6 is attached to the chains 5 and 5.

The kicker bar 6 is connected to the chains 5 and 5 at two points.

The chains 5 and 5 are arranged with an upward slope, and when the kicker bar 6 travels forward, the tip of the chains 5 and 5 protrudes above the conveyor 1 to push even if the cardboards 2 are stacked and become bulky. It is ready to be put out.

In the vicinity of the position where the kicker bar 6 starts extruding,
A push-up mechanism 8 is provided for temporarily pushing up the rear end portion of the thick paper 2 having the front portion mounted on the rear portion of the last thick paper 2 extruded by the kicker bar 6.

This push-up mechanism 8 is provided with a push-up rod 10 as shown in FIG.
Is connected to the operating end of the push-up cylinder 11, and when the push-up cylinder 11 is expanded and contracted, the push-up rod 10 swings its tip up and down about a pivot point 12.

A roller 13 is pivotally supported at the tip of the push-up rod 10.
Care is taken not to damage the lower surface of the cardboard 2 when pushing it up.

14 is a stopper.

Further, in the vicinity of the position where the kicker bar 6 starts to push out, an air suction mechanism for adsorbing and pulling up the front end of the cardboard 2 having a front part mounted on the rear part of the last cardboard 2 is pulled up. There are provided 15 and a sensor 16 for counting the number of cardboards 2 to be accumulated on the conveyor 1.

The sensor 16 and the air suction mechanism 15 are a movable base 17
The movable table 17 is carried by the transfer mechanism 18 in the same direction at the same speed as the conveyor 1.

The air suction mechanism 15 is a suction cylinder.
The air suction 20 is connected to the operation end of the card 19, and the cardboard 2 can be pulled up slightly after being sucked.

The transfer mechanism 18 is provided with a shaft 23 horizontally extending above the conveyor 1 and two screws 25, 25 connected to the shaft 23 via a bevel gear 24.

The screw 25 is rotated via a drive motor 26, and when the screw 25 is rotated, the movable table 17 reciprocates on the screw 25 in the carrying direction.

Next, the operation of this embodiment will be described.

As is apparent from FIG. 1, the sensor 16 carried on the movable table 17 counts the number of the cardboards 2 being conveyed with the front part placed on the rear part of the preceding cardboards 2.

When the number of sheets reaches a predetermined number, that is, five sheets in the illustrated example, the air suction mechanism 15 operates and the cardboards having the front part placed on the rear part of the cardboards 2 at the end to be pushed out by the kicker bar 6 2, that is, the front portion of the sixth cardboard 2 is adsorbed.

At the same time, the push-up mechanism 8 operates to temporarily push up the rear portion of the above-described sixth thick paper 2 or the like.

By these operations, the sixth cardboard 2 is lifted upward.

Here, when the pushing out of the kicker bar 6 is started, the preceding five cardboards 2 are accumulated on the transport conveyor 1 and pushed out, and finally transferred to the rail 28 arranged in the front.

Here, the feeding speed of the kicker bar 6 is set higher than that of the conveyor 1.

On the other hand, the adsorbed sixth cardboard 2 is transported forward through the transport mechanism 18 at the same speed as the transport conveyor 1 while being supported by the air suction mechanism 15.

At this time, the rear portion of the sixth cardboard 2 is in contact with the conveyor 1.

This is because the push-up mechanism 8 is operated instantaneously as described above and immediately returns to the original state.

When the sensor 16 detects that the preceding five cardboards 2 have been pushed forward by the kicker bar 6, the air suction mechanism 15 is released and the sixth sheet sent via the transfer mechanism 18 is sent. The cardboard 2 is dropped on the conveyor 1.

After this is dropped, the transfer mechanism 18 operates in reverse, and the movable table 17 starts retreating.

While moving backward, the sensor 16 again counts the number of thick papers 2.

When the number of sheets reaches a predetermined number, the above-mentioned operation is restarted.

However, according to the present embodiment, when the kicker bar 6 starts the extrusion, the sixth cardboard 2 is lifted upward, so that the cardboard 2 lifted up may be damaged. There is no.

Further, since the sixth cardboard 2 is lifted upward, only the preceding 5 cardboards 2 can be reliably pushed out, no malfunction occurs, and mechanical operation becomes reliable. The effect is obtained.

[Effects of the Invention] As is apparent from the above description, according to the present invention, when the cardboard is extruded by the kicker bar, the cardboard having the front part placed on the rear part of the last cardboard to be extruded. Since the cardboard is lifted upward, it is possible to provide a stable mechanical device that does not damage these cardboards and does not malfunction.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a cardboard stacking apparatus according to the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a side view of the lifting mechanism. 1 …… Conveyor, 2 …… Thick papers 5 …… Chain, 6 …… Kicker bar 8 …… Pushing up mechanism 15 …… Air suction mechanism 16 …… Sensor, 18 …… Transfer mechanism 23 …… Shaft, 25 …… Screw 26 …… Motor, 28 …… Rail

Claims (3)

[Scope of utility model registration request] Claims: 1. The front part is placed on the rear part of the preceding cardboards, and the cardboards continuously fed on the conveyor are accumulated every several sheets on the conveyor while being pushed forward by a kicker bar. In the cardboard stacking device thus configured, a push-up mechanism for temporarily pushing up the rear end of the cardboard having the front part mounted on the rear part of the last cardboard that is pushed out by the kicker bar, In order to count the number of cardboards to be accumulated on the transport conveyor, and an air suction mechanism for adsorbing the front end of cardboards that has a front part on the back of the last cardboard and pulling it up. And a transfer mechanism for carrying the sensor and the air suction mechanism and transferring these sensors in the same direction at the same speed as the transfer conveyor. . 2. The push-up mechanism has a push-up rod whose tip is swung up and down via a push-up cylinder, and a roller for contacting cardboard is pivotally supported at the tip of the push-up rod. The cardboard stacking device according to claim 1 of the utility model registration claim. 3. The transfer mechanism includes a shaft that is horizontally driven above a transfer conveyor and is rotationally driven, a screw connected to the shaft via a bevel gear, and a movable base that reciprocates on the screw. The cardboard stacking device according to any one of claims 1 and 2, wherein the movable base carries the sensor and the air suction mechanism.