KR102448648B1 - Paper storage and supply device - Google Patents

Abstract

The paper storage and supply device of the present invention includes a housing, a motor that is installed in the housing and generates a driving force, a pedestal on which paper is placed on the upper side and is raised and lowered together with the paper from the inside of the housing, and a rotary transfer shaft and pedestal that rotate in connection with the motor. It is installed and characterized in that it comprises a lead screw composed of a nut for transporting the pedestal in the vertical direction by the rotation of the rotary transfer shaft, and a guide part for preventing sagging of the pedestal and guiding the elevation of the pedestal.

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 paper, and if there is no stock of paper, 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 due 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 apparatus. A representative example of such a paper storage device is disclosed in Korean Patent Publication 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 the temperature and humidity in order to maintain the quality of the paper. That is, there is no structure in which a large amount of paper is stacked and the stacked paper is discharged and used to raise the paper.

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

The present invention has been devised to solve the above-mentioned problems, and an object of the present invention is to prevent the frame distortion of the storage and supply device due to the weight of the paper and the lower sag 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.

The 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 which is raised and lowered together with the paper from the inside of the housing; a lead screw comprising: a rotary transfer shaft connected to the motor to rotate; and a nut installed on the support and configured to move the support in a vertical direction by rotation of the rotary transfer shaft; and a guide part for preventing sagging of the pedestal and guiding the elevation of the pedestal.

In addition, the guide part is characterized in that it is composed of a guide member extending to support the lower side of the pedestal, a guide roller mounted on the guide member, and a guide rail attached to the inside of the housing and contacting the guide roller.

In addition, the guide rail is characterized in that it is formed as an integral profile in the frame disposed inside the housing.

In some embodiments, the guide part includes at least one first guide roller supporting one side of the guide rail and at least one second guide roller supporting the other side opposite to the one side of the guide rail. can do.

Here, the outer peripheral surface of the rotary transfer shaft and the inner peripheral surface of the nut may have a screw shape.

In addition, the rotational transfer shaft may be provided with a sensor wheel for measuring the elevation height of the pedestal.

Meanwhile, the motor may be installed eccentrically with the rotating shaft.

A driving gear may be provided in the motor, and a driven gear meshing with the driving gear may be provided on the rotation shaft. Alternatively, a belt pulley is installed in each of the motor and the rotating shaft, and the belt pulley may be connected by a belt. Alternatively, sprockets may be respectively installed on the motor and the rotating 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 deformation of the skeleton of the device due to the weight of the paper and the lower sag 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 stacked 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 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 the 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 defined in particular.

Also, in the present specification, the singular form may also include a plural form unless otherwise specified in the text. 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 having a space for accommodating the paper (P) inside, 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 feeder, 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, the motor 200 may be a general motor that rotates forward or reverse, or a step motor that precisely rotates the 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, which is a male screw, and a nut 420, which is a female screw. 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 the sag of the pedestal 300 . More specifically, the guide member 510 of the guide unit 500 extends from the rear surface of the paper storage and supply device A in the front direction 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 support the pedestal 300 more firmly. 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 for 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 to extend from one end of the pedestal 300 to the center of the pedestal 300 and may be composed of a support leg 512 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 may 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 (that is, the front side rail side of the paper storage and feeding device) and the back side of the guide rail 530 (that is, the back 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 from each other in the vertical direction. As such, 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 moves 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 at 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 as described above, it can serve as a more robust guide rail than when the guide rail is configured separately from the frame.

On the other hand, the upper end of the rotary transfer shaft 410 may be further provided with a sensor wheel 610 for measuring the elevation height of the pedestal 300 . The sensor wheel 610 may be coaxially coupled to the rotary transfer shaft 410 and rotate together as the rotary transfer 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 for 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 the 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 paper amount (%) of the paper P by grasping the height of the support 300 according to the elevation height 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 on the inside of 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 pedestal 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 pedestal 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 on 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 the 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 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 rotating 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, when 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 in the direction of the opening 101 faces 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'). For this purpose, 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.

Those of ordinary skill in the art related to the present embodiment will understand that it can be implemented in a modified form within a range that does not deviate 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 (6)

housing;
a motor installed in the housing and generating a driving force;
a lead screw comprising a rotary feed shaft that is connected to the motor and rotates, and a nut that moves up and down by rotation of the rotary feed shaft;
a pedestal on which a paper is placed upward and coupled to the lead screw in a cantilever form to be lifted and lowered together with the paper from the inside of the housing; and
Includes; a guide unit coupled to the lower side of the pedestal to guide the elevation of the pedestal;
The guide part,
a guide member extending to support a lower side of the pedestal;
a guide roller mounted on the guide member; and
It is attached to the inside of the housing and is composed of a guide rail in contact with the guide roller,
The guide rail is formed as an integral profile in the frame disposed inside the housing in order to increase the space efficiency inside the housing and to firmly guide the elevating and lowering of the pedestal,
The guide member is configured as a pair having a structure symmetrical to each other on both sides of the pedestal to prevent left-right distortion or inclination in the transport process of the pedestal and to support the pedestal more firmly,
The guide members configured as a pair extend from the rear side of the paper storage and supply device in the front direction of the paper storage and supply device,
The guide member composed of a pair is to prevent the other end opposite to the one end of the cantilever-shaped pedestal coupled to the lead screw from sagging downward,
a member body supporting a rear side of the paper storage and supply device through which the rotational transfer shaft passes; and
A support leg extending from one end of the member body to an integral profile with the member body and supporting the front region of the pedestal from below via the central region of the pedestal; includes,
The guide roller is rotatably coupled to the outside of the member body, the paper storage and supply device, characterized in that it is supported by the guide rail in the vertical transfer process of the pedestal and rotates.
The method of claim 1,
At least three or more of the guide rollers are coupled to each of the guide members configured as a pair, and the at least three or more of the guide rollers simultaneously support the upper and lower sides of the guide rail and the cantilever-shaped pedestal by the load of paper In order to more firmly prevent the front end of the
a first guide roller for supporting a rail surface of the guide rail;
a second guide roller for supporting the rear rail surface of the guide rail; and
A third guide roller disposed to overlap at least one of the first guide roller and the second guide roller in a cross-sectional view, and a third guide roller disposed to be vertically spaced apart from at least one of the first guide roller and the second guide roller Paper storage and feeding device, characterized in that.
The method of claim 1,
The paper storage and supply device, characterized in that the outer peripheral surface of the rotary transfer shaft and the inner peripheral surface of the nut have a screw shape.
The method of claim 1,
Paper storage and supply device, characterized in that the rotary transfer shaft is provided with a sensor wheel for measuring the height of the pedestal. delete delete

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