JPS60131231A - Blank feeder in box making machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blank feeding/feeding device for a cylinder making machine, which allows blanks whose edges in the advancing direction of the blanks are uneven to be uniformly fed between conveyor belts.

Generally, the blank feeding device in this type of cylinder making machine is J [as shown in Figure 1, an endless annular belt conveyor]
, □・Multiple paper feed belts are configured by , and this: Each paper feed belt! Above are blanks, feed control plate 3', and □ blanks installed with gaps through which the blanks 2 are fed out one by one. , disposed in front of the paper feed belt 1;
1) A plurality of sets of conveyor belts 4 constituted by an endless annular belt conveyor that nip and convey the blanks 2 at a higher speed than the paper feed speed of It is known that a large number of suction holes 5 are bored at equal intervals around the circumference, and a suction device 6 communicating with the suction holes 5 is connected behind the blank feeding control plate 3. It is being

However, this generally known device reliably transports the stacked blanks 2 on each paper feed belt 1.1a, lb behind the blank feed control plate 3 one by one in front of the blank feed control plate 3. This is a device configured for the purpose of feeding the blank 2 to the front of the blank feed control plate 3, and no consideration is given to the feeding of the blank 2 after it has been fed to the front of the blank feeding control plate 3, and the feeding between the conveyor belts 4.

However, according to such a device, if the edges of the blank 2 in the advancing direction are uneven, the paper feed bell) la, 1
Since the conveyance speed of the conveyor belt 4 is faster than the sheet feeding speed of the paper shown in FIG. The folds 2a are not conveyed parallel to the conveyor belt 4, which often results in uneven folding or loss in the subsequent folding process.

The present invention eliminates such problems, and even if the edges of the blanks in the direction of travel are uneven, the blanks fed by the paper feed belt are made so that the folds in the direction of travel are correctly parallel to the conveyor belt. The paper is fed between the conveyor belts so that
A blank feed control board is installed with gaps for feeding out blanks one by one, and an endless ring is installed in front of the paper feed belt to grip and convey the blanks at a higher speed than the paper feed speed of the paper feed belt. In a blank feeding device for a box-forming machine, which is composed of a plurality of sets of conveyor belts constituted by a belt conveyor, a large number of suction holes are perforated around the entire circumference of an appropriate number of the paper feed belts, and At the front and rear of the feed control board, suction machines communicating with at least one pair of the suction holes are connected to respective paper feed belts, and the paper feed belts having the suction holes are stretched, and an electric motor is connected to the feed control board. Among the pulleys attached to the drive shaft driven by It is characterized by being worn.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a blank feeding device in a box-forming machine according to the present invention will be described with reference to the attached drawings.

A plurality of pulleys 8 are pivotally connected to a fixed shaft 8 installed astride the base 7, and a plurality of pulleys are driven by an electric motor (not shown) and fixed to a drive shaft 10 installed astride the base 7. pulley 11
A plurality of paper feed belts 1 made of resistance friction members such as rubber bands are stretched across pulleys 8 and 11 corresponding to each of the paper feed belts 1, and these paper feed belts 1 are located at the center of the blank 2 and on the lower surface on both sides. The paper feed belts 1a to 1d are provided with suction/holes 5 at equal intervals around the entire circumference. Between the fixed shaft 8 and the drive shaft 10, each paper feed bell)1. A blank feed control board 3 is disposed on both sides of the base 7 on la to ld with a gap that allows one blank 2 to pass through, and the base 7 above the blank feed control board 3 is provided. Scale plates 13 and 14 for blank width adjustment are attached to the attachment shaft 12, which is provided astride between them, so as to be movable in the width direction.

A pair of paper feed belts 1a and 1 located on both sides of the lower surface of the blank 2 among the paper feed belts la to la having suction holes 5 formed therein.
On the lower surface of b, in front of the blank feed control plate 3, there is a suction hole 5 in which suction ports 15a and 15b are continuously bored.
The paper feeder has an opening sized to communicate with 1.5 pieces of paper, is provided with a suction device 15 connected to a suction pump (not shown), and is provided with a suction hole 5. Bell) 1a, 1
Driving shaft lo side pulleys lla and ll to which b is tensioned
b is connected to the drive shaft 10 via known one-sided clutches 17a and 17b whose rotation direction is free and reverse rotation is prevented.
It is attached to the shaft. Paper feed belt l with suction holes 5 perforated
From a to la, suction holes 18a and 18b are continuously drilled at the rear of the blank feed control plate 3 on the lower surface of the pair of paper feed bells 1c and 1d located on the lower surface of the center of the blank 2. A suction device 16 is provided, which has an opening large enough to communicate with 1.5 of the suction holes 5, and is connected to a suction pump (not shown).

Here, the suction ports 15a, 18 of the pair of suction machines 15.1B
The spacing between a, 15b, and 18b is approximately equal to the length of the blank 2, that is, the suction port lea of the rear suction device 16, the sheet feeding belt 1c of the blank 2 by 1θb,
At the same time as the suction to 1d is released, the blank 2 is transferred to the paper feed belt l by the suction ports 15a and 15b of the suction device 15 in the front.
A substance that is adsorbed to a and lb is used.

In addition, the suction ports 15a, 15b, 16 of the suction machine 15.1B
The paper feed bells a and 18b are sized so that they communicate with 1.5 of the suction holes 5 formed in the paper feed bells la to 1d.
This is because the blank 2 is always attracted to the paper feed belts 1c, 1d or the paper feed bells 1a, 1b at the suction ports tea, 18b or the suction ports 15a, 15b.

Paper feed bell) 1. In front of la to 1d, there are multiple pairs of conveyor belts (4a, 4b) which are endless annular belt conveyors made of resistance friction bodies such as rubber bands, and which form one pair (upper and lower) and which clamp and convey the blanks 2. will be placed.

When using the device of this embodiment configured in this way,
1. When the blank 2 is in contact with the back of the blank feed control board 3, each paper feed bell)1. After the blanks are laminated at appropriate positions on la to la, the blanks 2 are stacked on the blank width adjustment scale plate 13.
Positioning in the width direction is performed. Then the paper feed bell)
1.1a to 1d are driven by an electric motor (not shown) to drive the drive shaft 10, pulleys 11, lla, 11b, and one-way clutches 17a, 1? (conveyor bell) 4a
, 4b are also rotated at a predetermined speed by an electric motor (not shown).

A suction pump (not shown) is activated, and each suction machine 15
．． 1Ei (7) Each suction port 15a, 15b, lea, 18
Air is sucked from b.

When the device is operated in this way, the blank feed control plate 3
The center part of the bottom blank 2 of the blanks 2 stacked on the back side is sucked by the paper feed bells) lc and 1d by the suction @ie behind the blank feed control board 3, and then transferred to the other paper feed bells) 1
．． In combination with the contact resistance with la and 1b, the paper feed bell) 1.1
The blanks are fed forward from the bottom surface of the blank feed control plate 3 at feeding speeds a to 1d.

Next, by feeding the blank 2, the blank 2 is sucked Ia
At the same time that the suction state of the paper feed belts 1c and 1d by te is released, both sides of the blank 2 are suctioned again by the suction device 15 in front of the blank feed control plate 3, and the blank 2
remains fed out from the bottom surface of the blank feed control plate 3 (that is, the paper feed bell) 1. The blank 2 is fed between the conveyor belts 4a and 4b with the folds 2a of the blank 2 parallel to each other.

The blank conveying speed of the conveying belts 4a and 4b is higher than the blank feeding speed of the sheet feeding belts 1.1a to 1d because it is necessary to maintain a predetermined distance from the subsequent blank 2 in the subsequent folding process. being transported.

Therefore, as shown in the second figure, if the edges of the blank 2 in the advancing direction are uneven, for example, if the lid portion 2b and the glue margin portion 2c of the shaft are on the same edge, the lid portion 2b will be placed first. is held between the conveyor belts 4a and 4b, and the paper feed belt 1
．． The blank 2 is transported at a higher speed than the paper feeding speeds la to 1d, but the blank 2 is transported by the suction machines 15a and 15b with paper feeding bells) 1a and 1.
Since the adhesive portion 2c and other portions that are not held by the transport bells 4a and 4b are also attracted to the lid portion 2b.
It is drawn between the transport bells 4a and 4b at a constant speed.

At this time, the paper feed belt la to which the suction device 15 is connected,
lb moves at a higher speed than the other paper feed belts 1.1C11d, but the pulleys 8a and 8b of one of these paper feed belts) la and 1b are pivotally connected to the fixed shaft 8, and the pulleys 8a and 8b of the other paper feed belt Since the pulleys 11a and llb are pivotally connected to the drive shaft 10 via one-way clutches 17a and 17b in the sheet feeding direction, these sheet feeding belts la and lb are faster than the other sheet feeding belts 1. There is no problem in moving the blank 2, and the feeding speed of the following blank 2 is not affected in any way.

In addition, when the blank 2 on the bottom surface of the stacked blanks 2 is sent out from the bottom surface of the blank feed control plate 3, the next blank 2 located on the bottom surface is □ in the same way as above, and is attached to the blank 2 sent out earlier. Subsequently, blanks are continuously fed out from the bottom surface of the blank feeding control plate 3.

As described above, according to the blank feeding device of the present invention, the suction machine that communicates with the suction hole of the paper feed belt, which has a large number of suction holes perforated around the entire circumference, is connected to the front and rear of the blank feed control plate. The paper feed belt tensioning pulley, which is connected to a suction device in front of the blank feed control plate, is pivoted to the drive shaft via a one-way clutch in the paper feed direction. Even if the edges of the blanks in the direction of travel are uneven and the transport speed of the conveyor belt is faster than that of the blank paper feed belt, there will be no creases between the conveyor belt and the blanks between the conveyor belts. Since the blanks are fed parallel and uniformly, there is no risk of distorted boxes or product loss in the subsequent blank folding process, and uniform folded boxes can be obtained with high efficiency. Even if the paper speed and the conveyance speed are different, there are effects such as the ability to smoothly transition the blank from feeding to conveyance.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of blank feeding of a conventional device, FIGS. 2 to 4 are examples of a blank feeding device in a cylinder making machine according to the present invention, and FIG. 2 is an explanatory diagram of blank feeding,
Fig. 3 is a plan view of the main part, and Fig. 14 is a side view of the main part. 1, la to 1d... Paper feeding belt 2... Blank 3... Blank feeding control plate 4.4a, 4b... Conveyance belt 5... Suction hole 6.
...Suction machine 9.8a, 9b...Pulley 10...
Drive shaft 11, lla, l l b--Pulley 15.
16...Suction device 17a, 17b...One-way clutch Patent applicant Tanabe Shiko Machinery Manufacturing Co., Ltd. Agent 2 Figure 1,) Figure 2

Claims (1)

[Claims] A plurality of paper feed belts constituted by an endless annular belt conveyor, a blank feed control board installed on each of the paper feed belts with gaps for feeding out blanks one by one, and In a blank feeding device of a cylinder making machine, the blank feeding device of a cylinder making machine is composed of a plurality of conveyor belts each consisting of a plurality of sets of endless annular belt conveyors disposed in front and sandwiching and conveying blanks at a higher speed than the paper feeding speed of the paper feeding belt. A large number of suction holes are perforated around the entire periphery of an appropriate number of paper feed belts, and suction machines each communicating with at least one pair of the suction holes are provided in front and rear of the blank feed control plate. The blank feed belt is connected to another paper feed belt and has the above-mentioned suction holes, and is attached to a drive shaft driven by an electric motor or the like. 1. A blank feeding device for a cylinder making machine, characterized in that a boom of a paper feeding belt to which the machine is connected is pivotally attached to a drive shaft via a one-way clutch in the paper feeding direction.