KR101010304B1 - A feeder of paper board - Google Patents

Abstract

PURPOSE: A feeder for a paper board is provided to prevent damage to the surface of a paper board by controlling frictional force between the paper board and a conveying unit. CONSTITUTION: A feeder for a paper board comprises a conveying unit, a pulling unit, a sliding unit(300), and a suction unit. The conveying unit conveys a paper board. The pulling unit draws the paper board out of the conveying unit. The sliding unit reduces friction between the paper board and the surface of the conveying unit. The suction unit is installed in the bottom of the conveying unit and inhales the paper board placed on the top of the conveying unit.

Description

Cardboard feeder {a feeder of paper board}

The present invention relates to an automatic paper feeder for automatically supplying a cardboard of the apparatus for laminating a separate printing paper on a cardboard such as cardboard,

In particular, it is possible to minimize the friction between the cardboard and the conveying part during the paper feeding process, and relates to a technology that can prevent the distortion or surface damage of the cardboard during forced take out of the cardboard for other processes.

Generally, thick paperboards such as chip boards and corrugated boards cannot be installed in roll form during the printing process, so they are mostly conveyed as sheets and laminated with separate printing paper. And the like.

In this case, the paper lamination apparatus used is a printing paper supply unit 2 for supplying a printing paper through a printing process, as shown in FIG. Is made of.

And the printing method is made in such a way that the printing paper and the paper supplied through the printing paper supply unit 2 and the cardboard feeder (2) is transported and laminated through an adhesive at a specific position.

However, since cardboard has a thicker thickness than printing paper, it is difficult to feed and transport. In particular, the cardboard may be determined to be inferior in the later lamination process according to the surface state or position of the cardboard during the initial feeding process.

Therefore, in recent years, the research and development to improve the structure of the cardboard feeder (1) in order to prevent the surface damage of the cardboard during the feeding process is continuously made,

An example is Korea Patent Publication No. 2007-82994 (published date 2007. 08. 23) "Paper Printing Machine Automatic Paper Feeding Device".

In the state of the art, in a state where cardboard is stacked on a plurality of paper feed rollers, the paper feed rollers are rotated separately at different angles, and at the same time, the paper is transported, and at one side, a separate take-out roller pulls the paper and is forced from the paper feeder. It is composed of a structure which is drawn out and transferred to another process.

As the cardboard is transported by the plurality of paper feed rollers as described above, the draw roller has a low frictional force between the paper feed roller and the paperboard in the process of taking out the paperboard.

Also, by stopping the cardboard at the same time as the paper is transported by the paper feed rollers to stop at the same time, to prevent the phenomenon that the surface of the cardboard stacked immediately above during the transport of the paper is damaged by the rotation of the paper feed roller There is an advantage to this.

However, since separate motors must be connected for each rotation of each paper feed roller, the overall structure is complicated and the control system for individual control is complicated.

In addition, according to the final form of the box to feed the various size of cardboard, in this case, according to the change in the size of the paper feed rollers each stop point, that is, the rotation angle must also be set anew, the work is cumbersome, and eventually the whole work The problem that efficiency falls is produced.

The present invention is proposed to solve the problems of the prior art as described above,

Basically, it is to provide a cardboard feeder that can prevent the damage of the cardboard due to smooth withdrawal and friction by reducing the friction between the cardboard and the conveying part in the forced withdrawal process after the transfer of the cardboard.

In addition, in solving the basic problem, by implementing a frictional force reduction effect between the transfer unit and the cardboard with a simple configuration compared to the prior art, to provide a cardboard supply apparatus that can simplify the overall structure and operation.

In addition, it is possible to maintain the same paper feed structure regardless of the size of the cardboard to provide a cardboard feeder that can prevent the production efficiency degradation due to the change of paper feed structure and method.

According to the present invention, in the cardboard supply apparatus including a conveying unit for transporting the cardboard seated on the upper surface, and a withdrawal unit for pulling out one end of the cardboard in the transfer process through the conveying unit and withdrawal from the conveying unit, the conveyance of the cardboard Sliding means for lowering the friction between the cardboard and the surface of the conveying part in the process, and suction means for suctioning the cardboard mounted on the upper portion of the conveying portion to the conveying side is provided on the lower portion of the conveying portion, the conveying portion is configured as a belt conveyor Wherein, a plurality of drive belts are arranged at intervals, the sliding means is moved up and down in a state disposed between each drive belt, the lifting means is formed in the form of pushing up the lower surface of the cardboard, the suction means is a belt of the conveying unit Suction duct installed in the lower part of the conveyor and intake tank connected to the suction duct to suck outside air Is achieved by.
In addition, the sliding means may be configured to include a lifting and lowering driving unit is installed on the lower side of the conveying unit, and a contact plate which is connected to the elevating driving unit in the state located on one side of the conveying unit, the elevating and lifting the cardboard in the elevating process.
In addition, the contact plate of the sliding means may be located at the discharge point of the cardboard of the transfer unit.

The present invention consisting of the above characteristic configuration,

Basically, since the friction force between the cardboard and the conveying portion is controlled by the sliding means in the paper feeding process, it is possible to prevent the cardboard surface damage due to the smooth feeding of the cardboard and friction with the conveying portion.

In addition, since the frictional force is controlled by a separate sliding means irrespective of the operation structure of the transfer unit, there is an advantage that can simplify the operation structure of the transfer unit.

And since the sliding means is made by simply pushing the cardboard in the form of frictional force adjustment, the structure for reducing frictional force is also simplified.

In addition, since a sliding means operating separately from the transfer part structure is provided, even if the size of the cardboard is changed, there is no need to change the operation of the feeder, thereby preventing a decrease in work efficiency.

Hereinafter, with reference to the configuration illustrated in the drawings will be described embodiments of the specific configuration and its operation of the present invention.

For reference, the basic overall structure of the lamination device to which the present invention is applied is a paper supply unit (2) and the cardboard supply unit (1) and the supplied cardboard supplied with printing paper as shown in FIG. It consists of a lamination part 3 which laminates printing paper.

Among them, the cardboard feeder 1 corresponding to the present invention includes a transfer part 100, a lead part 200, and a sliding means 300 as shown in FIGS. 2 to 4.

First, the transfer unit 100 is a portion for mounting and initial transfer of the cardboard (P), and is composed of the conveyor unit 110 and the alignment unit 120 again.

Among them, the conveyor unit 110 is formed in the form of a belt conveyor as a whole. Specifically, the first and second driving rollers 112 are respectively formed at the front and rear sides as shown in FIGS. 2 to 4 and 6. 114 is positioned and the driving belt 116 is wound around each of the driving rollers 112 and 114, and the driving belt 116 is operated by the driving of the driving rollers 112 and 114.

In this case, the driving belt 116 is manufactured in a structure in which a plurality of through holes 116a are formed over the entire area, and a plurality of driving belts 116 are arranged at intervals along the length direction of the driving rollers 112 and 114.

In addition, the driving belt 116 is made of a rubber material having a high coefficient of friction so that the cardboard is raised during operation.

And the auxiliary rollers 113 are installed between each of the driving rollers 112 and 114 so that the section between each of the driving rollers 112 and 114 of the driving belt 116 is not struck down.

The conveyor unit 110 is driven only until the front end portion of the cardboard (P) to be transported without being driven continuously is bitten by the withdrawal unit 200 which will be described later, and then driven again when the withdrawal ends. It will be mentioned in the operation description process to be described later.

In order to drive the conveyor unit step by step, each of the driving rollers 112 and 114 can be driven by a separate electronic clutch (not shown).

Alignment unit 120, which is another component of the transfer unit 100, is used to induce sheet transfer while preventing shaking of the cardboard P mounted on the conveyor unit 110.

Basically, the first and second alignment plates 122 and 123 for left and right alignment of the cardboard P are configured to move left and right on the conveyor unit 110 according to the cardboard P size.

In detail, the first and second alignment plates 122 and 123 may be positioned at left and right intervals above the conveyor unit 110, and the sliding blocks 124 provided in front of each alignment plate 122 and 123 may be provided. The spiral shaft 125 is fitted in the horizontal state with the first drive roller 112.

At this time, as each sliding block 124 and the spiral shaft 125 is fastened to each other by a ball screw (ball screw) method, each alignment plate 122, 123 of the spiral shaft 125 when the spiral shaft 125 is rotated Sliding along the left and right.

In addition, the helical shaft 125 is formed on both sides of the helical shaft 125 in the opposite direction to each other, so that each alignment plate 122, 123 is slid in the opposite direction during rotation.

In the section located between the first and second alignment plates 122 and 123 of the spiral shaft 125, a blocking block 127 for sheet transport of the cardboard P is also installed in the form of a ball screw, thereby providing each alignment plate. Sliding left and right on the spiral shaft 125 together with (122) (123).

At this time, between the lower end of each blocking block 127 and the top surface of the driving belt 116 is formed only a gap enough to pass a sheet of cardboard (P).

 A separate guide rod 128 is positioned above and below the spiral shaft 125, and stable movement of each alignment plate 122 and 123 is performed as each guide rod 128 simultaneously penetrates and supports each sliding block 124. Can be done.

The drawing unit 200 is installed in front of the first driving roller 112 of the transfer unit 100,

The withdrawal unit 200 is for forcibly pulling out the cardboard conveyed on the transfer unit 100 and moving toward the lamination unit 3, and the first withdrawal roller 210 installed in a horizontal state with the first driving roller 112. ) And the second take-out roller 220 is positioned up and down to rotate in opposite directions.

At this time, urethane, which is a material of high friction coefficient, is applied to the surface of the first take-out roller 210 and knurling treatment is applied to the surface of the second take-out roller 220 to increase the surface roughness without slipping the cardboard. Make sure to withdraw smoothly.

Of course, the surface treatment method of each draw roller 210, 220 is not limited to the above form, both may be urethane treatment or knurling treatment, as long as the structure can increase the friction with the cardboard Cooking is available.

And the gap point between the first and second take-out rollers 210 and 220, that is, the portion of the cardboard bite is on the same line as the point where the front end of the cardboard lifted by the sliding means 300 to be described later in the transfer process is located It is installed to be located.

In addition, the distance between the lead portion 200 and the first driving roller 112 is generally set to about 135mm, which is modified depending on the type and size of the cardboard.

The sliding means 300 is a key component of the present invention, for reducing the friction between the cardboard (P) and the driving belt 116 in the process of forcibly withdrawn conveyed cardboard (P) by the withdrawal unit (200) Component.

The sliding means 300 is formed in a general cylinder method, and more specifically, the cylinder portion 310 and the contact plate 320 as shown in [Fig. 4] and [Fig. 5].

The cylinder part 310 is a part that serves as a driving source for the lifting and lowering of the contact plate 320 to be described later, made of a general hydraulic or pneumatic cylinder 312 and the cylinder rod 314 structure and the conveyor unit 110 It is located below.

In addition, the cylinder rod 314 has a main rod 314a drawn out from the cylinder 312 and a support rod 314b extends from side to side on the upper end of the main rod 314a, and on the support rod 314b. The coupling rod 314c is formed in a vertical structure at intervals.

At this time, the interval between each coupling rod 314c is to be located at each interval between the drive belt 116 when installed below the conveyor unit 110.

At the upper end of each of the coupling rods 314c, a contact plate 320 having a friction reducing ability between the cardboard P and the driving belt 116 is installed. The contact plate 320 is formed of a simple metal plate. The center of the lower surface is bolted to the top of the coupling rod (314c).

In addition, the front and rear both ends are formed with a round surface facing downward to prevent damage to the cardboard surface by the edge during the conveying process of the cardboard.

The upper surface of the contact plate 320 in direct contact with the cardboard (P) is treated so that the friction coefficient is very low through a separate grinding process.

At this time, as the coupling rods 314c are positioned between each driving belt 116 as described above, each contact plate 320 is also disposed between the driving belts 116 as shown in FIGS. 2 and 6. , Is located immediately behind the first driving roller 112, ie on the discharge point of the cardboard (P).

The reason for placing the contact plate 320 on the discharge point of the cardboard (P) is mentioned in the operation process described later.

The contact plate 320 is again positioned so that the upper surface is lower than the upper surface of the drive belt 116 during the operation of the conveyor unit 110 as shown in [Fig. 4], when the conveyor unit 110 is stopped [ As shown in FIG. 8, the upper surface is raised to be positioned slightly above the upper surface of the driving belt 116.

The sliding means 300 described above is not limited to the above-described cylinder method, and may be applied as many as long as it has a structure in which the contact member is lifted up and down through a separate driving source.

In addition to the sliding means 300, the suction means 400 to further facilitate the withdrawal of the cardboard (P) is additionally installed,

The suction means 400 is to ensure that the paperboard is transported in a state of being completely in contact with the drive roller 116 during the first transfer so that it can be passed smoothly without being caught by the blocking block 127 in the transfer process,

Suction duct 410 and the suction pipe 420 and the suction tank 430, as shown in Figure 6 the suction duct 410 is a rectangular parallelepiped shape formed in the receiving space therein and the suction hole in the upper surface ( 412 is composed of a plurality formed structure.

The suction duct 410 is located directly behind the first driving roller 112 in a state installed between the upper and lower surfaces of each driving belt 116, and each suction duct 410 and each contact plate 320 when viewed from above. This is located on the same line.

In addition, the upper surface of the suction duct 410 is positioned in close contact with the bottom surface of the upper belt 116b so that the suction hole 412 and the through hole 116a of the driving belt 116 communicate with each other.

One side of the suction duct 410 is connected to the suction pipe 420 and the other end of the suction pipe 420 has a structure connected to the intake tank 430 of the vacuum control method.

For reference, the operation point and the stop point of the suction means 400 and the conveyor unit 110 and the sliding means 300 are controlled through a separate control means (not shown), such a control means using a timer or a separate sensor It can be implemented in such a way as to use.

Hereinafter will be described the operation of the present invention by the above configuration and the effects generated in the process.

First, as shown in FIGS. 2 and 3, the spiral shaft 125 is rotated so that the first and second alignment plates 122 and 123 are sufficiently spaced left and right on the driving belt 116. After stacking (P), the first and second alignment plates 122 and 123 are moved again to be in close contact with the left and right sides of the cardboard bundle P0 so that the cardboard bundle P0 is not shaken from side to side.

In this state, when the conveyor 110 and the drawing unit 200 are operated together, the first driving roller 112 and the second driving roller 114 are rotated as shown in FIGS. 4 and 7. As the driving belt 116 is operated, the first cardboard P1 located at the bottom of the cardboard bundle P0 is transported along the driving belt in a state of being in close contact with the driving belt 116.

In addition, the suction means 400 is operated together with the operation of the driving belt 116. The intake duct 412 of the intake duct 410 and the intake hole 116a of the driving belt 116 are in communication with each other. The cardboard is pulled downward, so that the cardboard is conveyed in close contact with the drive belt 116.

Therefore, the cardboard can pass smoothly through the blocking block 127.

In the process of conveying the first cardboard, several cardboards located immediately above the first cardboard P1 are also instantaneously conveyed together but are caught by the blocking block 127 to be blocked.

In this transfer process, as shown in FIG. 8, the first end of the first cardboard P1 passes between the first and second driving rollers 112 and 114 of the drawing unit 200 that is already rotating past the conveyor unit 110. Simultaneously with the bite, the conveyor unit 110 is stopped.

The reason why the conveyor unit 110 is stopped at this point is that when the first cardboard P1 is conveyed to some extent forward, the rear end of the second cardboard P2 located directly above the first cardboard P1 is driven by a driving belt ( 116, because if the drive belt 116 continues to be driven in this state, the contact portion of the second cardboard (P2) may be worn and damaged due to friction with the drive belt 116.

Of course, when the conveyor unit 110 is stopped, the first cardboard P1 does not completely exit the conveyor unit 110, but the front end portion is pulled out by the lead unit 200. Since the 200 forcibly pulls out the first cardboard P1, the conveyor unit 110 is stopped and thus does not affect whether paper feeding of the first cardboard P1 is completed.

 In addition, even in the process of forcibly drawing out the first cardboard P1 by the drawing unit 200 without the help of the conveyor unit 110, frictional force is formed between the first cardboard P1 and the driving belt 116.

In this case, the friction force F is determined by the weight N of the cardboard bundle P0 holding the first cardboard P1 and the friction coefficient μ of the surface of the driving belt 116. (Calculation: F = μN)

However, as described above, since the driving belt 116 is basically made of a material having a large friction coefficient, the frictional force with the first cardboard P1 may be largely applied even during the drawing process.

Therefore, if the force is drawn out by the withdrawal unit 200 in the state where such a large friction force is applied, not only the bottom surface of the first cardboard P1 is scratched and damaged due to friction with the drive belt 116, but also each drive belt 116. If there is a difference in the frictional force between the first cardboard (P1) is drawn out in a twisted state in one direction, resulting in a later failure in the lamination process.

The present invention solves this problem by using the sliding means 300, specifically, the end portion of the first cardboard (P1) is immediately before the end of the conveyor portion 110 is snapped to the lead portion 200 and at the same time the cylinder portion 310 When the cylinder rod 314 is raised upward, each contact plate 320 is also raised to push up the front bottom surface of the first cardboard (P1).

Therefore, the portion of the first plate P1 pushed up by the contact plate 320 is spaced apart from the driving belt 116 by 't'.

At this time, as described above, since the surface of the contact plate 320 is manufactured to have a significantly lower coefficient of friction than the driving belt 116, when the first cardboard P1 is forcibly pulled out in this state, the contact of the first cardboard P1 is brought into contact. Including the point in contact with the plate 320, the rear section is drawn over the contact plate 320.

Therefore, as compared with the case in which the drive belt 116 is pulled out, the frictional force is partially reduced, so that the drawing is much easier and the possibility of surface damage of the first cardboard is much reduced.

If the contact plate 320 is located behind the first cardboard rather than the discharge point of the cardboard, the final frictional force is in the same state as before because the contact plate 320 is contacted with the driving belt 116 again after riding the contact plate 320 in the withdrawal process. Becomes

Therefore, it must be placed only at the discharge point of the cardboard as described above, or should be installed to be the same as the entire length of the cardboard so that the entire front and rear length section of the cardboard is lifted.

And the first cardboard (P1) is lifted by the contact plate 320 and at the same time

Therefore, as shown in FIG. 9, only a part contacting with the contact plate 320 is drawn out in a locally lifted state when viewed from the front.

Thus, the present invention, in addition to the basic effect of implementing the smooth withdrawal of the cardboard through the sliding means 300, as the sliding means 300 is operated regardless of the driving method of the conveyor unit 110,

As the conveyor unit 110 has a function of conveying and reducing frictional force of the cardboard as in the prior art, unlike the structure in which the driving method of the conveyor unit 110 is inevitably changed from time to time according to the size of the cardboard, Therefore, there is no need to change the structure, so it is easy to operate and prevents the work efficiency degradation caused by the structure change.

In addition, the frictional force reduction effect between the cardboard and the drive belt is realized by simply raising and lowering, so that the feed rollers are individually rotated as in the prior art, as well as eliminating the need to set each rotation angle individually. The production cost can be lowered as well.

As described above, the present invention is characterized in that it is possible to prevent damage to the surface of the cardboard and misplacement of the cardboard by lowering the friction force between the cardboard and the driving roller surface in the feeding process of the laminated cardboard,

In addition to these basic features, the simplest structure and method compared to the conventional features to reduce the friction force, as well as to make it easy to use by not requiring a separate structural change is the biggest feature.

Each of the features of the present invention described above can be variously modified and combined by those skilled in the art, but such deformations and combinations are provided with frictional force lowering means that are operated separately from the conveyor unit, thereby causing damage to the cardboard during feeding. When it is related to the configuration and the purpose to prevent the location and at the same time the transfer of the cardboard, the frictional force reduction process in a simple structure and manner compared to the existing should be considered to fall within the protection scope of the present invention.

1 is a view showing the overall structure of the lamination device

2 and 3 is a perspective view showing the overall structure of the cardboard feeder of the lamination device

Figure 4 is a side schematic view showing a state in which the cardboard is stacked mounted on the conveyor portion of the transfer unit

5 is a perspective view showing the structure of the sliding means

Figure 6 is a plan view showing the installation position of the contact plate and the suction duct when viewed from the plane of the conveyor

Figure 7 is a schematic diagram showing the first conveying the cardboard at the bottom by the drive belt

8 is a schematic view showing a state in which the cardboard is pulled out by the withdrawal unit in the state in which the contact plate of the sliding means pushed up the bottom surface of the cardboard;

Claims (4)

A transfer part for transferring the cardboard seated on the upper surface; In the cardboard supply apparatus comprising a withdrawal unit for pulling out one end of the cardboard in the transfer process through the transfer unit to withdraw from the transfer unit, Sliding means for reducing friction between the surface of the paperboard and the conveying part during the paperboard conveying process; Suction means is provided on the lower portion of the conveying part to suck the cardboard seated on the upper portion of the conveying part to the conveying part side, The transfer unit is configured in the form of a belt conveyor, the drive belt is arranged in plurality at intervals, The sliding means is moved up and down in a state arranged between each driving belt, is formed in the form of pushing up the lower surface of the cardboard during the lift, The suction means comprises a suction duct installed in the belt conveyor lower portion of the transfer unit, cardboard supply apparatus characterized in that it comprises an intake tank connected to the suction duct to suck the outside air. delete The method of claim 1, The sliding means is a lifting and lowering drive unit which is installed under the transfer unit, Paperboard supply apparatus characterized in that it comprises a contact plate which is connected to the lifting and lowering drive unit in the state located on the conveying unit is raised and lowered and pushes the cardboard in the lifting process. The method of claim 3, wherein The contact plate of the sliding means is cardboard supply apparatus, characterized in that located in the discharge point of the cardboard of the conveying portion.

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