JP2004059172A - Automatic paper feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously and automatically feed blank plates fed to a paper feeding part of a folding box machine for making the blank plates into a box. <P>SOLUTION: This automatic paper feeding device makes the blank plates into the box in the folding box machine. The printing/folding line processed and shearing processed blank plates are accumulated and stacked in a block shape. A fork part is provided on an upper part of a front direction of the paper feeding part. A standby part and a separation part are provided in a rear direction. When the blank plates in the paper feeding part becomes less than the predetermined quantity, a fork of the fork part is advanced, the blank plates accumulated and stacked in the separation part are transferred, and the blank plates can be continuously fed to the paper feeding part without a break. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a blank sheet automatic sheet feeding apparatus for automatically feeding blank sheets sequentially to a sheet feeding section of a sack-sticking box making machine for forming a blank sheet having a punched crease line processed into a predetermined shape. It is.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a sack box making machine has been provided with a bottom feeder belt for feeding a blank plate, which is formed by folding a blank line processed on a paperboard to a paper feeding unit, and carrying the blank plates one by one below the piled blank plate.
[0003]
The bottom feeder belt absorbs the lower surface of the lowermost blank plate of the piled blank plate, or the blank plate and the bottom feeder belt move integrally due to the friction between the blank plate and the bottom feeder belt, and the blank plates continue one by one Sent out at high speed.
[0004]
For this reason, since the number of blank plates fed to the sheet feeding unit is limited, a machine operator frequently works to feed a certain amount of blank plates to the sheet feeding unit.
[0005]
In addition, when the number of blank plates to be pierced exceeds a certain amount, the frictional force between the lowermost blank plate and the bottom feeder belt increases and the blank at the top of the blank plate that is discharged is also increased. The frictional force with the plate also increases, and the thin blank plate is bent on the feeder belt and may not be carried out one by one from the sheet feeding unit.
[0006]
If the amount is less than a certain amount, the frictional force is reduced, and the blank plate cannot be sent out one by one integrally with the bottom feeder belt, or the sending timing is delayed.
[0007]
For this reason, it is important for a sack box making machine to send a blank plate straight from the feeder of the paper feeding section, and the quality of the product is greatly affected by the quality of the product. For this reason, it is necessary to send out blank plates at regular intervals.
[0008]
In addition, a sack box making machine generally feeds a blank plate and carries it one by one from the bottom, a pre-folding portion for normally folding (pre-folding) the first and third fold lines, and a bottom. Bottom gluing module to glue and glue the bottom of the box, Combi folder to fold the flap from behind with the rotary hook, and the second fold line and the fourth fold line are usually folded and flattened. It is composed of a transfer unit that transports the box and passes it to the pressure bonding belt at the delivery unit, and a delivery unit that stacks and glues the glued boxes.
[0009]
The gluing device provided in the bottom bonding module is an upper gluing device, and the gluing device provided in front of the main folding unit is a lower gluing device.
[0010]
In the sheet feeding section, side guide plates are provided at both ends in the sheet feeding direction of the blank plate on which the blank plate is piled.
[0011]
Also, the thickness of the blank plate was substantially adjusted to prevent the two blank plates from being sent out by changing the gap with the bottom feeder belt according to the thickness of the blank plate discharged by the discharge adjustment screw in front of the blank plate being transported. A discharge guide is provided, and further, a blank plate support guide (rear support) that lifts the blank plate to adjust friction with the bottom feeder belt and a guide guide for facilitating the piling of the blank plate are provided. ing.
[0012]
For this reason, since the blank plate is fed by the bottom feeder belt rotating at high speed, the blank plate must be frequently fed, and each guide plate may obstruct the feeding operation.
[0013]
Further, a plurality of bottom feeder belts wound around guide rollers, tension rollers, support rollers, and the like are provided at a lower portion where the blank plate is piled.
[0014]
The bottom feeder belt is driven at a high speed and the blanks are piled one by one from a discharge guide whose bottom surface is adjusted to the thickness of the blank by the friction of the bottom feeder belt. The sheet is fed at a high speed and conveyed to the pre-folding section, which is the next step.However, if a certain amount of the blank sheet is inserted into the sheet feeding section, a part of the blank sheet is entangled with the ejection guide, and the feeding error of the blank sheet occurs. .
[0015]
The blank plates ejected one by one from the ejection guide of the paper feed unit pass between the eccentric roller above and the roller below to detect that two blank plates have been sent out immediately after ejection from the paper feed unit. When two sheets are inserted, the eccentric roller works, and the limit switch is activated to stop the machine.
[0016]
However, due to the work of piling the blank plate on the bottom feeder belt rotating at a high speed, there is a case that the adjustment failure of the two-sheet feeding prevention device is not noticed.
[0017]
Also, two blank plates may be sent out to cause trouble in the next process. Further, the prevention adjustment for preventing the two blank plates from being fed out requires a delicate adjustment due to the relationship with the piled state of the blank plate, and requires the experience and skill of the operator.
[0018]
However, there is a state in which even if the number of blank boards piled in the paper feed unit becomes equal to or less than a certain amount, the blank plate disappears from the paper feed unit without any signal or sign from the paper feed unit.
[0019]
In addition, a large amount of blank plates cannot be stacked in the paper feeding unit in order to prevent a blank plate to be piled in the paper feeding unit, and a blank having a large blank size and a large basis weight. Since the number of plates that can be fed into the paper feed unit at a time is small, the operator must frequently work to supply a blank plate to the paper feed unit while nailing it to the paper feed unit. It is not possible to grasp the processing state after the blank plate is sent out or the subtle trouble of the box making machine.
[0020]
Furthermore, since the bottom feeder belt of the paper feed unit rotates at high speed and feeds the blank plate by frictional force, the surface of the bottom feeder belt may slip depending on the material of the blank plate or surface processing state. The belt surface must always be cleaned or hydrated in order to keep the belt surface constant at the opposite side of the paper feed section.
[0021]
[Problems to be solved by the invention]
As described above, the blank plate in the paper feeding section of the sack box making machine is sent out by the bottom feeder belt rotating at high speed, so the blank plate must be frequently fed to the paper feeding section due to the thickness of the blank board etc. In addition, various troubles have been caused by feeding a predetermined amount or more of the blank plate to be fed.
[0022]
Further, since the blank plate of the paper feeding unit is fed by frictional force with the bottom feeder belt rotating at a high speed, there is a problem that it is very difficult to cope with the blank plate by piling.
[0023]
For this purpose, a rear support member for the pile is provided at the lowermost part of the blank plate of the paper feeding unit so that the entire surface of the blank plate does not contact the bottom feeder belt.
[0024]
The inclination of the rear support member of the pile is very important, and is adjusted by the direction of the grain of the blank board, the basis weight, the degree of adhesion, etc.If the inclination is too large, the adhesion to the bottom feeder belt will be insufficient. , The spacing between the blanks increases.
[0025]
In addition, if the inclination is too small, the adhesion to the bottom feeder belt will be too strong, and two blank boards will come out together and break under the guide. A delicate adjustment is also required to prevent frequent feeding of blank plates.
[0026]
Japanese Patent Application Laid-Open No. 5-318623 discloses a method of supplying water to the paper feeding surface of a bottom feeder belt rotating at high speed in order to accurately feed a blank plate of a sack box making machine.
[0027]
Japanese Unexamined Patent Publication No. Hei 5-318623 discloses that an endless belt made of sponge is transferred from a continuous water supply device to a surface for feeding a bottom feeder belt in a direction opposite to a rotation direction of the bottom feeder belt, thereby transferring to a bottom feeder belt. It has been proposed to prevent paper feed failure by rinsing dirt, paper dust, and the like, and to prevent yield from being reduced due to dirt being transferred to a blank plate.
[0028]
However, in the method described in Japanese Patent Application Laid-Open No. 5-318623, although the frictional force of the bottom feeder belt of the paper feeding unit can be kept constant, it is not a countermeasure against the pile of the blank plate and the pile is supplied at a fixed amount or more. It is fully conceivable that the same trouble as that of the related art will occur due to paper.
[0029]
In addition, since continuous cleaning of the continuous water supply device is always performed due to accumulation of rinsed paper dust and dirt, if the condition at the start of use is not maintained, more dirt on the blank plate than when the continuous water supply device is not installed. Easy to move.
[0030]
In addition, many proposals have been made in various fields as automatic paper feeders, and many of them are often related to a feeding mechanism for accurately feeding a base material piled into a paper feeding unit one by one. .
[0031]
Japanese Patent Application Laid-Open Nos. 6-179536 and 8-25648 propose automatic paper feeders based on the frictional force of a bottom feeder belt made of paper base material (including cardboard). It is a method of raising the trailing end of the pile to give the necessary friction for stable transport to the blank plate and the bottom feeder belt, and does not automatically and continuously supply the blank plate.
[0032]
Furthermore, Japanese Patent Publication No. 7-102632 describes a device for taking out sheets one by one from a group of corrugated cardboard sheets accumulated in an accumulation section of a cardboard box making machine and supplying the sheets. According to the description, a method has been proposed in which a sheet is conveyed in a sashimi shape (a state in which a plurality of sheets are shifted little by little and overlapped with each other), and a sheet at the leading end is sucked by a vacuum pad and sent out one by one.
[0033]
However, it is not possible to cope with a thin blank board, and the method of feeding the sheet in a sashimi shape to the paper feeding unit has been used for a long time. is there.
[0034]
In addition, the method of transporting a sheet or a blank plate in the form of sashimi, in addition to the quality problem for the product as described above, has the problem that the mechanism of the machine or the device becomes very complicated and failures are likely to occur accordingly. There is.
[0035]
The present invention has been made in order to solve the above-described problems. By transporting a blank plate in a block shape instead of sashimi-like transport, the apparatus does not have a complicated structure, and the blank plate is accurately placed. And an inexpensive automatic paper feeder.
[0036]
[Means for Solving the Problems]
In order to solve the above problems, first, the invention according to claim 1 of the present invention is an apparatus for automatically and automatically feeding a blank plate to be manufactured in a feeding section of a sack box making machine, The paper feeding device is stacked and stacked on the front side of the side where the blank plate of the paper feeding section of the sack box making machine is fed out, on the fork section that moves back and forth above the paper feeding section, and behind the paper feeding section. The block-shaped blank plate is composed of a standby portion where the blank plate is on standby, and an edge cutting portion for cutting the two block-shaped blank plates conveyed from the standby portion, and the standby portion is a stacking portion for stacking and stacking the blank plates in a block shape. It is connected continuously by the transport equipment, and the edge of the edge is continuously connected by the transport equipment in the direction of the paper feeding section of the standby section. Edges vertically sandwiching the approximate center of stacked block-shaped blanks A stopper is provided, and a marginal shutter for stopping or advancing the block-shaped blank plates stacked and stacked is provided at the center of the leading end in the direction of the other paper supply unit, and also provided above the front of the paper supply unit. The fork section has an arm that supports the fork, a slide arm, and a slide guide and a slide plate for the fork to advance and retreat above the paper feed unit. The slide guide and slide plate are transported by the blank plate of the paper feed unit. The fork of the fork is moved in the direction of the edge to detect that the amount of the blank plate of the sheet feeding unit has become smaller than a predetermined amount. The block-shaped blank plate stacked and stacked at the center of the leading end from the paper unit direction is transferred onto a fork, and the block-shaped blank plate stacked and stacked in the paper feed unit. An automatic sheet feeding apparatus, characterized in that rank plate is continuously feeding.
[0037]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE INVENTION An automatic paper feeder for a sack box making machine according to the present invention will be described in detail below with reference to the drawings according to embodiments. 1 to 3 show one embodiment of the present invention. FIG. 1 is an explanatory view showing a sheet feeding section of an automatic sheet feeding device of a sack box making machine according to the present invention and an accumulation stacking section of a blank plate, and FIG. 2 is an automatic feeding apparatus in the sack box making machine according to the present invention. FIG. 3 is an explanatory view showing the operation of the fork portion of the paper apparatus, FIG. 3 is an explanatory view showing the operation steps of the automatic paper feeder of the sack box making machine according to the present invention, and FIG. 4 is the sack box making machine according to the present invention. FIG. 4 is a cross-sectional view illustrating a rear support shape of a sheet feeding unit in the automatic sheet feeding device of FIG.
[0038]
The suck pasting box making machine blanks plate 13 coated cardboard or coated Manila or double-sided cardboard 190 g / m 2 of ~750g ^/ m ² paperboard is inserted are used in the paper feed unit 15 in the automatic sheet feeder of the present invention Gravure printing, offset printing, or letterpress printing is performed.
[0039]
Further, those requiring aesthetics are those which have been punched into a predetermined shape and creased by a punching machine after surface processing such as vinyl processing or foil stamping processing.
[0040]
In addition, those that are subjected to printing processing, and those requiring more aesthetics, are subjected to surface processing such as vinyl processing or foil stamping, then punched into a predetermined shape with a punching machine and creased, processed further, and subjected to blanking, After reaching 13, the sheets are stacked and stacked at a predetermined height and transported in a block shape.
[0041]
Further, as shown in FIG. 1, there is provided an edge portion 2 on which two blocks of the blank plate 13 are stacked and stacked on the roll conveyor 8 in the direction of the paper feed portion 15 of the standby portion 1, and the standby portion of the edge portion 2 is provided. Upper and lower stoppers 4 and 5 are provided on the left and right, respectively, for cutting the block of the blank plate 13 which is continuous substantially at the center of the block of the blank plate 13 stacked on the stacking side.
[0042]
Further, in order to make the installation space of the automatic paper feeder as small as possible, a slide guide 11 is provided above the paper feed unit 15, and a fork unit 10 that slides back and forth in the direction of the cutout 2 is provided.
[0043]
The fork unit 10 is provided with a slide arm and a fork mounting arm on a slide plate that slides in a slide guide. The fork unit 10 transfers a block of the blank plate 13 stacked and stacked from the edge cutting unit 2 and blanks the sheet feed unit 15. The plate 13 is inserted.
[0044]
When the sheet feeding unit 15 is filled with the blank plate 13, the fork unit 10 stops above the sheet feeding unit 15 in the direction in which the blank plate is fed out, as shown in FIG.
[0045]
In addition, the border shutter 12 of the border portion 2 is stacked and stacked, and is closed to stop the block 3 of the blank plate.
[0046]
When the blank plate 13 of the paper feed unit 15 reaches a predetermined reduction amount, as shown in FIG. 2B, the fork unit 10 stopped above the direction in which the blank plate 13 of the paper feed unit 15 is fed out. Moves forward, and the upper and lower trimming stoppers 4 and 5 on the block 3 of the stacked and stacked blank plates 13 on the standby portion 1 side of the edge cutting portion 2 are operated to remove the blocks of the stacked and stacked blank plates 13. The upper surface of the fork portion 10 stops horizontally with the upper surface of the roll conveyor 8 on the supply side of the sandwiching and edge cutting portion 2, and at the same time, the edge shutter 12 is opened and the stack 3 is stacked and the block 3 of the blank plate 13 is moved to the upper surface of the fork portion 10. The trimming shutter 12 is closed at the same time as being loaded.
[0047]
Further, the edge portions 4 and 5 are opened, and the block 3 of the stacked stacked blank plates sandwiched between the upper and lower edge stoppers 4 and 5 advances to the edge shutter 12 of the edge portion 2 and is stopped by the edge shutter 12 at the same time. The block 3 of the stacked blank 13 in the standby section enters the edge cutting section 2.
[0048]
FIG. 3A is a front view of the state of FIG. 2A, and a fork for feeding a predetermined amount of the blank plate 13 to the sheet feeding unit 15 and transferring the block of the stacked blank plate 13 is stacked. The unit 10 waits at an upper portion of the sheet feeding unit 15 where the blank plate 13 is sent out, and blocks the blocks of the blank plates 13 stacked and stacked on the roll conveyor 8 with the margin shutter 12 on the sheet feeding unit 15 side. Then, the blank plate 13 of the sheet feeding unit 15 is continuously fed by the high speed rotation of the bottom feeder belt 6.
[0049]
When the blank plate 13 is continuously fed out and the blank plate 13 of the paper feed unit 15 decreases by a certain amount, the fork unit 10 that has been waiting above the paper feed unit 15 is placed on the slide guide 11 as shown in FIG. Is moved forward to reach the rim 2, the rim stoppers 4, 5 provided above and below the rim 2 are actuated to sandwich the block of the stacked blank plates 13 of the rim 2 vertically and simultaneously the rim is formed. 2, the block shutter 12 on the side of the sheet feeding unit 15 of the edge cutting unit 2 is opened, and at the same time, the block of the stacked and stacked blank plates 13 on the side of the sheet feeding unit 15 of the edge cutting unit 2 is transferred onto the fork. 5 closes.
[0050]
As shown in FIG. 3 (c), the block of the blank plate 13 transferred on the hawk is retracted before the blank plate 13 of the paper feeding unit 15 runs out and the fork is retracted to the paper feeding unit 15 using the abutment plate 9 as a guide. At the same time as the sheet is fed, the upper and lower edge cutting stoppers 4 and 5 of the edge cutting unit 2 are opened, and the block of the blank plate 13 stacked and stacked in the standby unit 1 stops at the sheet feeding side edge shutter 12 of the edge cutting unit 2.
[0051]
Also, the rear supporter of the paper feeding unit has four types of rear supports in an important part which lifts the rear end of the piled blank plate and provides friction necessary for stable transport of the blank plate and the bottom feeder belt.
[0052]
As shown in FIG. 4 (a), the portion A where the blank plate contacts the bottom feeder belt and the inclination B of the bottom portion are important due to the rear support, and are adjusted in relation to the eye direction, basis weight, density, etc. of the blank plate. You.
[0053]
In addition, the support with two rollers shown in FIG. 4B is used because the effect of pushing out the blank plate is expected.
[0054]
Further, the brake effect of the roller support blank plate shown in FIG. 4 (c) is expected, and any of the supports is used, and the blank plate is sent out at a uniform interval and at a uniform interval. It is used to prevent the next blank plate from catching.
[0055]
The bottom plate feeder belt at the lower portion where the blank plate 13 is piled is driven at high speed, and the lower surface of the bottom blank plate 13 where the blank plate 13 is piled is frictionally formed by the bottom feeder belt 6. As a result, the blank plates 13 are accurately discharged one by one from the discharge guide whose gap has been adjusted to the thickness of the substantially blank plate 13, and are conveyed to the pre-folding unit which is the next step.
[0056]
Next, the blank plates 13 discharged one by one from the discharge guide of the paper feeding unit 15 are moved upward to detect two blank plates 13 immediately after being discharged from the paper feeding unit 15. When two cards pass through a certain interval, the eccentric rolls are activated, and the limit switch is activated to stop the machine.
[0057]
In addition, the pre-folding section is formed by a sack box making machine, and the first fold line and the third fold line of the rank plate 13 are folded back by about 120 degrees to 180 degrees in order to easily cause the folded packaging box. Then, it is transported to the bottom pasting module part which performs the bottom folding and gluing of the bottom pasting box in the next process, and the bottom flap is pasted with the combination folder part which flaps the flap from behind with a rotary hook and the bottom paste is applied. Done.
[0058]
In addition, a straight type packaging box that does not perform bottom bonding can be manufactured using a sack bonding machine that is not provided with a bottom bonding module section and a combination folder section.
[0059]
Next, the second fold line and the fourth fold line of the blank plate 13 are folded and flattened by about 120 to 180 degrees in the main folding section, and the glue on the glue wheel is placed at a predetermined position of the blank plate 13 by a gluing device. Is transferred to
[0060]
Further, the entire gluing apparatus can be moved and adjusted in the width direction of the sack pasting box machine by the right and left moving handle provided outside the frame of the sack pasting box machine according to the pasting position of the blank plate 13.
[0061]
In addition, the glue is reliably transferred to the blank plate 13, and the blank plate 13 is conveyed by being sandwiched between upper and lower conveyors, and the remaining bent portion of the blank plate is bent to 90 degrees by a helical guide and a folding belt.
[0062]
The blank plate 13 that has passed through the upper and lower conveyors is folded up to 180 degrees by a belt, a taper roller, and a folding guide while being transported by a folding belt and a lower conveyor, and is transported from a transport unit to a low-speed delivery by a flat box. There, the sashimi (in a state where the blanks overlap each other in a state of shogi) is passed through the pressure belt, and the adhesive transferred to the blanks 13 is dried or hardened (set) during the sashimi to form a box. .
[0063]
【The invention's effect】
The present invention is not limited to the process of increasing the number of steps in the box making of a sack box making machine, and not only does the blanking plate of the sheet feeding section not interrupt the box making operation due to the shortage of the sheet feeding, but also the operator nails the sheet feeding section. It is possible to check the entire process of making a product from the paper feeding unit to the delivery unit, and to be able to check the stability and improvement of the quality, improve the operation rate of the machine, and It is a simple and inexpensive device that can provide the automatic paper feeder of the present invention to a similar machine having a paper section.
[Brief description of the drawings]
FIG. 1 is a front view showing a configuration of an automatic paper feeder of a sack box making machine according to the present invention.
FIG. 2 is a plan view showing an operation state of the automatic sheet feeding device of the box making machine according to the present invention.
FIG. 3 is a plan view showing an operation state of the automatic sheet feeding device of the sack box making machine according to the present invention.
FIG. 4 is a cross-sectional view showing the shape of a rear support of the supply unit of the sack box making machine according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Stand-by part 2 ... Edge cutting part 3 ... Edge cutting part feeding side 4 ... Upper edge cutting stopper 5 ... Lower edge cutting strike 6 ... Bottom feeder 7 ... Rear support 8 ... Roll conveyor 9 ... Backing plate 10 ... Hawk part 11 ... Slide guide 12 ... Brim cutting shutter 13 ... Blank plate 14 ... Slide plate 15 ... Supply unit 16 ... Slide arm 17 ... Arm 18 ... Bar support 19 ... Two roll supports 20 ... Roll support

Claims (1)

A device that automatically and continuously feeds a blank plate to be manufactured in the paper feeding section of the sack box making machine, and is located above the front of the side where the blank plate of the paper feeding section of the sack box making machine is sent out, A fork unit that moves back and forth above the paper feeding unit, and a block-shaped blank plate stacked and stacked behind the paper feeding unit stand by and cuts the two block-shaped blank plates transported from the standby unit. The stand-by section is connected to the stacking section that stacks and stacks the blanks in a block shape with the transfer equipment, and the cut-off section is connected to the feed section of the standby section with the transfer equipment. The edge cutting portion has a marginal stopper vertically sandwiching a substantially central portion of a block-shaped blank plate stacked and stacked in one of the standby portion direction portions of the edge cutting portion, and further, at the center of the leading end of the other sheet feeding portion direction portion. Stop the block-shaped blank plate stacked Or a fork provided at an upper portion in front of the paper feeding unit, and an arm and a slide arm for supporting the fork, and a slide for moving the fork forward and backward in the upper portion of the paper feeding unit. A guide and a slide plate, wherein the slide guide and the slide plate are provided at an upper portion substantially at the center in a right angle direction in which the blank plate of the paper feed unit is conveyed, and the blank plate of the paper feed unit is less than a predetermined amount. The fork of the fork portion advances in the direction of the edge cutting portion according to this detection information, and the stacked block-shaped blank plates on the side of the center of the leading end from the direction of the paper feeding portion of the edge cutting portion are placed on the fork. An automatic sheet feeding apparatus wherein a block-shaped blank plate that has been transferred and stacked in a sheet feeding section is continuously fed.

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