KR20210146026A - Paper storage and supply device - Google Patents

Abstract

According to the present invention, a paper storing and supplying device comprises: a housing; a motor which is installed in the housing and which generates driving force; a support on which a paper is placed on an upper side thereof and which is lifted with the paper together inside the housing; and a lead screw which is connected to the motor to be installed in the support and a rotary transfer shaft rotated by the driving force of the motor and which is composed of a nut transferring the support in a vertical direction by rotation of the rotary transfer shaft. The motor is eccentrically installed in the rotary transfer shaft.

Description

Paper Storage Feeder {PAPER STORAGE AND SUPPLY DEVICE}

The present invention relates to a paper storage and supply device, and more particularly, to a paper storage and supply device for checking and storing the remaining amount of paper.

In general, paper used for office purposes, such as printing paper, is individually packaged in a bundle in a certain amount, and then the individually wrapped paper is stored in a box. In this case, the paper is usually stored in a state of being stacked around the printing apparatus. Paper can be used by supplying it to a printing device, etc. after releasing the individual packaging.

When these papers run out, they are individually ordered online or over the phone, and when delivery is complete, they are stored in the vicinity of the printing device or in the bathroom. However, it was cumbersome and tiring to disassemble the box during use, unpack the individual packaging, and then rearrange the paper. In addition, it is not easy to grasp the stock of the paper, and if there is no stock, the work is stopped. In other words, manpower is wasted in the management of the site, the aesthetics of the office is damaged, and a business loss occurs according to the time for supplying the paper.

In order to improve this problem, a paper storage device has been proposed, where the paper storage device means a device for storing paper to be supplied to a printer or a printing device. A representative example of such a paper storage device is disclosed in Patent Registration No. 10-1472036 (hereinafter referred to as 'Patent Document 1').

However, the paper storage device of Patent Document 1 has a problem in that only a small amount is stored to maintain temperature and humidity in order to maintain the quality of paper. That is, there is no structure in which a large amount of paper is stacked, and the stacked paper is discharged and raised as much as used.

Registered Patent Publication No. 10-1472036 (Registered on Dec. 5, 2014)

The present invention has been devised to solve the above problems, and an object of the present invention is to prevent the distortion of the skeleton of the storage and supply device due to the weight of the paper and the drooping of the lower part of the pedestal on which the paper is placed, and at the same time, it is loaded with a simpler structure. An object of the present invention is to provide a paper storage and feeder capable of guiding the transfer of paper.

Another object of the present invention is to provide a paper storage and supply device capable of monitoring the remaining amount of paper.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Paper storage and supply device of the present invention for achieving the above object, the housing; a motor installed in the housing and generating a driving force; a pedestal on which the paper is placed upward and is raised and lowered together with the paper from the inside of the housing; and a lead screw including a rotary transfer shaft connected to the motor and rotated by the driving force of the motor, and a nut installed on the pedestal and configured to move the pedestal in the vertical direction by rotation of the rotary transfer shaft, the The motor is characterized in that it is installed eccentrically with the rotary transfer shaft. That is, the rotation shaft of the motor may rotate on an axis different from that of the rotation transfer shaft.

In some embodiments, the motor may be disposed in an area that does not overlap the pedestal and the rotational transfer shaft in a cross-sectional view.

In addition, the motor may be disposed inside the housing, behind the pedestal and the rotational transfer shaft, and the motor may be disposed such that a rotational shaft of the motor is directed toward the ground.

In some embodiments, the motor may be provided with a driving gear, and the rotational transfer shaft may be provided with a driven gear meshing with the driving gear. Alternatively, a belt pulley is installed in each of the motor and the rotary transfer shaft, and the belt pulley may be connected by a belt. Alternatively, sprockets may be respectively installed on the motor and the rotary transfer shaft, and the sprockets may be connected by a chain.

According to the paper storage and supply device according to the present invention, it is possible to prevent the distortion of the skeleton of the device due to the weight of the paper and the sagging of the lower part of the pedestal on which the paper is placed, and at the same time, it is possible to guide the transport of the stacked paper with a simpler structure.

Furthermore, when the motor for driving the rotational transfer shaft of the paper storage and supply device is installed eccentrically, the maximum stacking amount of paper in the paper storage and supply device can be improved as the minimum height of the pedestal is lowered by the height of the motor.

1 is a rear perspective view schematically illustrating an internal structure of a paper storage and supply device according to some embodiments of the present invention.
Figure 2 is a rear view for explaining the internal structure of the paper storage and supply device according to some embodiments of the present invention, Figure 3 is a cross-sectional view 'a-a' of Figure 2, Figure 4 is the guide member of Figure 3 It is an enlarged view of the connection area of the and guide rail.
5 is a front perspective view schematically illustrating an internal structure of a paper storage and supply device according to some embodiments of the present invention.
6 is a side view schematically illustrating a paper storage and supply device according to some other embodiments of the present invention, and FIG. 7 is a cross-sectional view 'b-b' of FIG. 6 .
8 to 10 are bottom views illustrating a driving unit according to the embodiment of FIGS. 6 to 7 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments published below, but may be implemented in various different forms, and only these embodiments make the publication of the present invention complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

In addition, in this specification, the singular form may also include a plural form unless otherwise specified in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Furthermore, in the present specification, for clarity of explanation, the case where the object stored and supplied by the paper storage and supply device is paper has been described as an example, but the present disclosure is not limited thereto. For example, in the housing 100 of the paper storage and supply device (A), promotional prints such as catalogs, printed booklets, etc. may be stored and supplied.

1 is a rear perspective view schematically shown to explain the internal structure of a paper storage and supply device according to some embodiments of the present invention, and FIG. 2 is a rear view for explaining the internal structure of the paper storage and supply device, FIG. 3 is a cross-sectional view of a part 'a-a' of FIG. 2 , and FIG. 4 is an enlarged view of a connection area between the guide member and the guide rail of FIG. 3 . 5 is a front perspective view schematically illustrating the internal structure of the paper storage and supply device.

1 to 5, the paper storage and supply device (A) according to the present invention forms the outer shape of the device and includes a housing 100 in which a space for accommodating the paper (P) is formed, and the housing A motor 200 that is installed at the inner lower end of the 100 and generates a driving force, and a support 300 on which the paper P is placed on the upper side and lifted together with the paper P from the inside of the housing 100, A rotary transfer shaft 410 connected to the motor 200 to rotate, and a nut 420 that is installed on the pedestal 300 and transports the pedestal 300 in the vertical direction by the rotation of the rotary transfer shaft 410 . ) and a guide part 500 for preventing sagging of the pedestal 300 and guiding the elevation of the pedestal 300 .

The housing 100 may be composed of a frame 102 constituting a skeleton to form the outer shape of the storage and supply device, and a plate material for finishing the outer shape. On the other hand, although not shown, the front finishing material of the housing 100 may be provided with a display unit that provides the status of the paper feeding device, images for corporate and product promotion, and the like.

In addition, an opening 101 is formed in the upper front portion of the housing 100 so that the paper P is drawn out and used.

In addition, the housing 100 may be provided with a control unit 600 for controlling the operation of the paper storage and supplying device (A) of the present invention or for displaying the power ON/OFF and the current state.

On the other hand, as the motor 200 , a general motor that rotates forward or reverse may be applied, or a step motor that precisely rotates a rotation range at a specific angle or step may be applied.

In addition, the pedestal 300 has an area determined according to the type of the paper P and is formed in a plate shape.

The lead screw 400 is composed of a rotational feed shaft 410 that is a male thread and a nut 420 that is a female thread, and a screw that is inserted so that a steel ball rolls therebetween changes the rotational motion into a linear motion can be applied. That is, the outer circumferential surface of the rotary transfer shaft 410 and the inner circumferential surface of the nut 420 may have a screw shape. (300) can be changed in the vertical direction linear motion.

On the other hand, the pedestal 300 that is configured in a plate shape and coupled to the nut 420 and the cantilever shape may cause sagging due to the load of the paper, but the guide unit 500 of the present invention guides the elevation of the pedestal 300 . At the same time, it is possible to prevent sagging of the pedestal 300 . More specifically, the guide member 510 of the guide unit 500 extends in the front direction from the rear surface of the paper storage and supply device (A) and supports the lower surface of the support 300 to prevent sagging of the support 300 . have.

In addition, the guide member 510 may be formed as a pair on both sides of the pedestal 300 to prevent left-right distortion or inclination in the transport process of the pedestal 300 and to more firmly support the pedestal 300 . The guide members 510 formed as a pair on both sides may have a structure symmetrical to each other as shown.

Specifically, as shown in FIG. 3 , the guide part 500 includes a guide member 510 extending to support the lower side of the pedestal 300 , a guide roller 520 mounted on the guide member 510 , and the It is attached to the inside of the housing 500 and is composed of a guide rail 530 to which the guide roller 520 is in contact.

At this time, the guide member 510 includes a member body 511 supporting one end (ie, the rear region of the paper storage and supply device) of the pedestal 300 through which the rotational transfer shaft 410 passes, and the member body 511 ). It is formed extending from one end of the pedestal 300 to the center of the pedestal 300 and may be composed of a support leg 512 for supporting a portion facing the other end (ie, the front region of the paper storage and supply device). The member body 511 and the support leg 512 are separated for explanation, and it goes without saying that the member body 511 and the support leg 512 do not physically constitute a separate configuration from each other.

The guide roller 520 may be rotatably coupled to the outside of the member body 511 . That is, in the vertical transfer process of the pedestal 300 , the guide roller 520 is supported by the guide rail 530 while being coupled to the member body 511 and can rotate.

In some embodiments, at least two or more guide rollers 520 may be coupled to each of the guide members 510 . For example, the guide member 510 has a first guide roller 520a supporting the front side of the guide rail 530 (ie, the front side rail side of the paper storage and feeding device) and the back side of the guide rail 530 (ie, the rear side of the guide rail 530 ). , a second guide roller 520b for supporting the rear rail surface of the paper storage and supply device) may be provided. The first and second guide rollers may be disposed with the guide rail 530 interposed therebetween in a cross-sectional view.

Preferably, three guide rollers 520 may be coupled to each of the guide members 510 . For example, the guide member 510 may further include a third guide roller disposed to overlap the first guide roller 520a in cross-sectional view and spaced apart in the vertical direction. In this way, when the first and third guide rollers are provided, the first and third guide rollers simultaneously support the upper and lower sides of the guide rail 530 so that the front end of the pedestal 300 is moved downward by the load of the paper. Sagging can be prevented more firmly.

More preferably, four or more guide rollers 520 may be coupled to each of the guide members 510 . For example, the guide member 510 may further include a fourth guide roller disposed to overlap the second guide roller 520b in cross-sectional view and spaced apart in the vertical direction. That is, two guide rollers 520 form a pair, and a total of four guide rollers 520 may be provided on the top and bottom. Accordingly, the guide roller 520 may be configured to support and surround the guide rail 530 at four points.

The guide roller 520 may be provided with a bearing inside the roller or may be configured as a bearing itself.

Accordingly, the guide member 510 supporting the lower portion of the pedestal 300 is coupled to the guide rail 530 by the guide roller 520 and transported in the vertical direction along the guide rail 530 , thereby providing the pedestal 300 . ) can be stably raised and lowered and at the same time prevent sagging of the pedestal 300 .

In addition, the guide rail 530 is formed in an integral profile with the frame 102 disposed inside the housing 100 , so that a separate space for installing the guide rail 530 is unnecessary. That is, by reducing the number of parts, the overall weight of the device is reduced and the manufacturing cost is reduced. In addition, when the guide rail 530 is integrally formed with the frame 102 in this way, it can serve as a more robust guide rail than when the guide rail is configured separately from the frame.

Meanwhile, a sensor wheel 610 for measuring the elevation height of the pedestal 300 may be further provided at the upper end of the rotary transfer shaft 410 . The sensor wheel 610 may be coaxially coupled to the rotary feed shaft 410 and rotate together as the rotary feed shaft 410 rotates. The sensor wheel 610 has a count film formed in the circumferential direction or a perforated portion is formed in the circumferential direction. The count film and/or the perforated portion may be formed at equal intervals on the sensor wheel 610 .

A rotation sensor sensing the rotation of the sensor wheel 610 is formed on the substrate of the control unit 600, and the rotation sensor rotates the sensor wheel 610 based on a signal sensed from the count film and/or perforated portion The number, that is, the number of rotations of the rotary transfer shaft 410 can be counted, and the elevation height of the pedestal 300 can be determined based on this. In this case, it is possible to calculate the amount of movement of the nut 420 according to one rotation of the rotary feed shaft 410 by inputting the male thread pitch of the rotary feed shaft 410 to the controller 600 in advance.

Accordingly, it is possible to easily calculate the remaining amount of paper (%) of the paper P by grasping the height of the support 300 according to the elevation of the support 300 .

In some embodiments, at least one limit switch 103 for limiting the upper and lower movements of the pedestal 300 is provided inside the housing 100 to limit the upper and lower movements of the pedestal 300 . can In addition, the limit switch 103 may be utilized as a reference point when calculating the remaining amount of paper (%). For example, when the support 300 is raised up to the limit switch 103 provided at the inner upper end of the housing 100 , the remaining amount of the paper P is 0%, and the support 300 is the housing 100 . In the case of descending to the limit switch 103 provided at the inner lower end, the remaining amount of paper of the paper P may be set to 100%.

On the other hand, the limit switch 103 provided at the inner upper end of the housing 100 serves to detect that the user withdraws the paper P from the device, and remains in the device by the lifting operation of the pedestal 300 after it is withdrawn. When the paper (P) is raised to the limit switch (103), it can also serve to stop the lifting operation of the support (300).

6 is a schematic side view illustrating a paper storage and supply device according to some embodiments of the present invention, and FIG. 7 is a cross-sectional view 'b-b' of FIG. 6 . 8 to 10 are bottom views illustrating a driving unit according to the embodiment of FIGS. 6 to 7 .

1 to 5 , when the motor 200 and the rotary transfer shaft 410 are installed on the same shaft, the internal capacity of the paper P is reduced by the height of the motor 200 . That is, the lowest point of the pedestal 300 becomes as high as the height of the motor 200 . To solve this, the motor 200 of the paper storage and supply device (A') shown in FIGS. 6 to 7 according to some other embodiments of the present invention may be installed eccentrically with the rotary transfer shaft 410 . . That is, the rotation shaft 210 of the motor 200 may be rotated on a different axis from the rotation transfer shaft 410 of the device.

Specifically, the motor 200 may be disposed in an area that does not overlap the pedestal 300 ′ in a cross-sectional view, unlike those shown in FIGS. 1 to 5 . For example, as shown in FIGS. 6 to 7 , the motor 200 may be disposed on the rear surface of the pedestal 300 ′, the rotary transfer shaft 410 and the frame 102 ′. The motor 200 may be disposed such that the rotation shaft 210 faces downward of the device.

In this case, the rotational force of the motor 200 may be transmitted to the rotational transfer shaft 410 in various ways.

Specifically, as shown in FIG. 5 , a driving gear 710 may be provided in the motor 200 , and a driven gear 720 meshing with the driving gear 710 may be provided on the rotational transfer shaft 410 . Alternatively, as shown in FIG. 6 , a belt pulley 710 ′ is installed on the motor 200 and the rotary transfer shaft 410 , respectively, and the belt pulley 710 ′ may be connected by a belt 720 ′. Alternatively, as shown in FIG. 7 , sprockets 710 ″ are respectively installed on the motor 200 and the rotary transfer shaft 410 , and the sprockets 710 ″ may be connected by a chain 720 ″.

On the other hand, if the inner space of the housing 100 is insufficient as the motor 200 is moved to the side and rear surfaces of the device as described above, the arrangement in which the short side of the paper P faces in the direction of the opening 101 is changed to the arrangement in which the long side faces. can That is, the paper (P) may be accommodated in the horizontal direction in the paper storage and supply (A'). To this end, the width 300'aL of the support 300' in the front-rear direction of the paper storage and supply device A' is the width of the support 300' in the lateral direction of the paper storage and supply device A'. It may be smaller than the width 300'bL.

In this way, when the motor 200 for driving the rotational transfer shaft 410 of the paper storage and supply device (A') is installed eccentrically, as the minimum height of the support 300 is lowered by the height of the motor 200, the paper storage and supply The maximum stacking amount of the paper P in the device A' can be improved.

On the other hand, in FIG. 7, other components of the paper storage and supply device A' are omitted for clarity of explanation, but the guide member 510 described above with reference to FIGS. 1 to 5 is included in the paper storage and supply device A'. Of course, the guide roller 520 and the guide rail 530 may be provided.

A person of ordinary skill in the art related to this embodiment will understand that it can be implemented in a modified form without departing from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

A - paper storage feeder
100 - housing 200 - motor
300 - pedestal 400 - lead screw
500 - guide unit 600 - control unit

Claims (7)

housing;
a motor installed in the housing and generating a driving force;
a pedestal on which the paper is placed upward and is raised and lowered together with the paper from the inside of the housing; and
A rotary transfer shaft connected to the motor and rotated by the driving force of the motor, and a lead screw installed on the pedestal and composed of a nut for transporting the pedestal in the vertical direction by the rotation of the rotary transfer shaft,
The motor is a paper storage and supply device, characterized in that the rotational transfer shaft and eccentrically installed.
According to claim 1,
The rotation shaft of the motor rotates on a different axis from the rotation transfer shaft.
According to claim 1,
The motor is paper storage and feeding device, characterized in that it is disposed in a region that does not overlap with the pedestal and the rotary transfer shaft in a cross-sectional view.
4. The method of claim 3,
The motor is disposed inside the housing, behind the pedestal and the rotational transfer shaft, wherein the motor is disposed so that the rotational shaft of the motor is directed toward the ground.
According to claim 1,
The motor is provided with a driving gear, and a driven gear meshing with the driving gear is provided on the rotational transfer shaft.
According to claim 1,
A belt pulley is installed on each of the motor and the rotary transfer shaft, and the belt pulley is connected by a belt.
According to claim 1,
A paper storage and supply device, wherein sprockets are installed on the motor and the rotary transfer shaft, respectively, and the sprockets are connected by a chain.

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