JP3126986U - Feeding force adjuster for paper feeder - Google Patents

Abstract

In a paper feeding operation by a paper feeding device, it is possible to easily adjust the paper-stripping force at low cost so that paper can be reliably fed according to the type of paper.
The stacked sheets are sandwiched between the surface of the friction plate 22 exposed on the upper surface side of the upper table 20 that supports the sheets substantially horizontally on the downstream side of the sheet tray and the peripheral surface of the sheet feed roller 23, and the sheet is placed from above. In the rolling force adjuster 10 that is mounted on a sheet feeding device that feeds the sheets one by one, covers the friction plate 22 from above, and adjusts the locking force due to the frictional resistance to the lower surface side of the sheet to be different from the friction plate 22. And a friction sheet 11a having a friction resistance on the upper surface larger than that of the friction plate 22 and a locking structure for locking the friction sheet 11a on the upper table 20 in the sheet feeding direction so as not to move in the sheet feeding direction. By doing so, the frictional resistance to the lower surface side of the paper was increased.
[Selection] Figure 3

Description

  The present invention relates to a paper feeding device adjusting device, particularly when feeding paper that has a strong adhesion and is likely to cause double feeding, so that the paper can be supplied one by one by increasing the paper feeding power. The present invention relates to a sheet-feeding device adjusting device.

  In recent years, collating machines for automatically stacking and collating multiple types of paper one by one have become widespread in the fields of newspaper inserts, printing, copying machines, etc., and have various functions It has been known. In particular, in a collator for newspaper insert advertisements, it is possible to reliably collate a plurality of types of advertisements not only with different printing contents but also with different thicknesses, paper quality, etc. without causing a paper feeding error. A function is required.

  In order to ensure such a collating function, for example, as described in Japanese Patent Application Laid-Open No. 2002-302273, it is known to mount a paper feeding device equipped with a friction feeding method on a collating machine. For example, the general newspaper advertisement collating machine shown in FIG. 4 has a configuration in which a plurality of such sheet feeding devices 2C, 2C, 2C,.

  The sheet feeding device 2C includes a sheet feeding tray (tilting table) 21 that stacks sheets with the leading end side thereof inclined downward, and feeds the uppermost sheet in the downstream direction by an auxiliary roller 24 disposed on the downstream side thereof. Further, the sheet is sandwiched and rotated by the downstream sheet feeding roller 23 with the friction plate (spreading chip) 22 exposed from the window on the upper surface of the upper table (base) 20, whereby the second sheet is caused by the frictional resistance of the friction plate 22. While preventing the following double feeding of paper, it is designed to reliably feed the paper one by one from the top.

  In such a newspaper advertisement collating machine, the degree of the required power varies depending on the type of paper to be fed. For example, in the case of a paper that does not require strong paper such as a thick leaflet, the use of the friction plate 22 having a high frictional resistance increases the frequency of causing a paper feeding error because the resistance is too strong. Therefore, there is known a means for reducing the sheet feeding resistance by covering the friction plate 22 with a rolling force adjusting tool called a resin film chip concealment so as to reduce the frictional resistance.

  On the other hand, in a paper such as a thin leaflet, which has a strong adhesive force and is difficult to peel off, the normal friction plate cannot be sufficiently wound and the frequency of double feeding increases. Accordingly, there is also known a means for selecting an optimum one from a plurality of types of friction plates having different frictional resistances according to the type of paper and replacing them appropriately.

However, in this case, every time the type of paper to be fed changes, it is necessary to remove the paper feeding shaft of the paper feeding device and remove the friction plate inside the table from the fixed claw and replace it. It is a heavy burden on the user to perform the plate replacement work.
JP 2002-302273 A

  The present invention is intended to solve the above-mentioned problems, and it is possible to easily increase the paper-spreading power at a low cost with respect to the paper feeding device, thereby reliably feeding paper according to the type of paper. The challenge is to make it possible.

  Therefore, the present invention sandwiches the stacked sheets between the surface of the friction plate exposed on the upper surface of the upper table that supports the sheets substantially horizontally on the downstream side of the sheet tray and the peripheral surface of the sheet feeding roller one by one from the top. Friction resistance of the upper surface in a rolling force adjuster that is mounted on the feeding device and covers the friction plate from above and adjusts the locking force due to the frictional resistance to the lower surface of the paper to be different from the friction plate. Is provided with a friction sheet that is larger than the friction plate and a locking structure that locks the friction sheet on the upper table so that it cannot move in the paper feeding direction. The frictional resistance was increased.

  In this way, paper that requires a stronger power than usual can be fed simply by mounting the paper strength adjusting device of the present invention that can be created with a relatively simple configuration at a relatively low cost. In this case, the locking force can be easily increased by adjusting the frictional resistance to the lower surface of the sheet. Further, by adopting a system in which the friction sheet is placed on the upper table downstream of the paper feed tray, it is easy for the user to see the mounting state and the mounting method is easy to understand, and the adjustment work is easy.

  Further, the locking structure of the locking portion is formed by bending the plate-like member into a substantially L shape when viewed from the side, and one of the inner surfaces forming the inner angle is the end side of the friction sheet. If it is fixed and the other surface is in contact with and locked to a vertical surface on the upstream side of the upper table, the attaching / detaching operation becomes extremely easy. In this case, when not using the rolling force adjuster, it can be stored in a position that is slid horizontally along the corner of the table, and can be slid to the central use position during use, making attachment and detachment operations extremely easy. When not in use, it will not be a problem for the storage location of the power adjustment tool.

  Furthermore, if the above-mentioned locking part has a magnetic force generating part at least on a part of its inner surface, and the mounting state is reinforced by the magnetic adsorption force to the upper table made of a magnetic material, It will be able to be installed more firmly without difficulty.

  Furthermore, in the above-described rolling force adjuster, if the friction sheet is provided with a pattern having a predetermined concavo-convex structure on the upper surface of the rubber sheet to enhance the frictional resistance, it is possible to easily obtain the desired strength. If the pattern represents a three-dimensional shape of the surface of the fabric formed by weaving or knitting yarn, it is easy to produce excellent frictional resistance and relatively easy to create. It will be something.

  The present invention, which has a relatively simple configuration, makes it possible to easily increase the power at a relatively low cost even for a paper feeder that does not have a special power adjustment mechanism. The paper can be reliably fed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a sheet-feeding device adjusting device 10 according to an embodiment of the present invention. The rolling force adjuster 10 includes a friction part 11 having a friction sheet 11a such as a so-called non-slip sheet (non-slip rubber) made of a substantially rectangular rubber plate having a thickness of about 1 to 2 mm, and a central part on the short side of the rectangular metal plate. It has a locking metal fitting 12a bent in a substantially right angle at the center and formed in an L shape in side view, and the upper surface on the end side of the friction sheet 11a is bonded to one surface forming the inner angle of the locking metal fitting 12a with an adhesive or the like. A locking portion 12 for fixing and locking at a predetermined position on the upper table 20 is provided.

  The locking metal fitting 12a has a flat magnet 12b such as a rubber magnet that exerts an attractive force on the magnetic material adhered and fixed to an inner surface that is substantially perpendicular to the surface to which the friction sheet 11a is bonded and is vertical when used. The both inner side surfaces forming the inner corners are attracted and fixed so as to be in close contact with the upper corner portion on the upstream side of the upper table 20 of the sheet feeding device made of stainless steel SUS430 or the like, thereby reinforcing the mounting state. ing. In addition, it can be similarly implemented by magnetizing the locking fitting 12a itself as a magnet.

  Referring to the side view of the lashing force adjusting tool 10 in FIG. 2, the friction sheet 11a constituting the friction portion 11 has a concavo-convex structure representing the three-dimensional shape of the surface of a fabric formed by weaving or knitting yarn on the surface thereof. The pattern is formed by a method such as embossing and the like, and the surface is smoother than that of a general friction plate. In addition, the friction sheet 11a is excellent in deformability and can easily adhere to the bottom surface of the paper to be locked. Thus, the rolling force adjusting tool 10 having a simple configuration can be easily created at a relatively low cost.

  When the winding force adjusting tool 10 is attached to the paper feeding device 2C, as shown in the enlarged cross-sectional partial view of FIG. 3, in the gap formed between the paper feeding tray 21 and the upper table 20, The inner surface of the metal fitting 12a on which the magnet 12b is provided is vertical and is brought into close contact with the upstream end surface of the upper table 20, and the inner surface on which the friction sheet 11a is provided is placed in close contact with the upper surface of the upper table 20, 11a is attached so that the end side of 11a covers the friction plate 22 exposed to the upper table 20.

  Then, by driving the sheet feeding device 2C, the sheet is sandwiched between the upper surface of the friction sheet 11a supported from below by the friction plate 22 and the peripheral surface of the rotating sheet feeding roller 23, and downstream of the friction sheet 11a. However, the vertical inner surface of the locking portion 12 having a hook-like structure is hooked on the upstream end surface of the upper table 20 and is firmly locked.

  Further, since the plate-like magnet 12b provided on the vertical inner side surface of the locking portion 12 is magnetically attracted to the upper table 20 made of stainless steel such as stainless steel SUS430 or the like, the winding force adjusting tool 10 The mounting state is reinforced and extremely stable, and the magnetic force generated between a metal such as stainless steel SUS430 and a magnet is not too strong and is moderately weak, so when switching between use and non-use It is easy to move the force adjusting tool 10 in the horizontal direction perpendicular to the direction, and it does not move during use.

  Note that when the paper strength adjusting tool 10 is not used, such as when feeding paper that is relatively easy to roll, a position that does not interfere with paper feeding by shifting it horizontally from its mounting position on the upper table 20 along its corners. It can be stored in a state where it is kept waiting. In this way, when a plurality of types of papers having different easiness to be fed are continuously fed in a relatively short time by the same paper feeding device 2C, it is possible to easily change the webbing force in a short time. In addition to this, it is possible to avoid dropping and losing by the attracting force of the magnet 12b, and not to be troubled by the storage place of the rolling force adjusting tool 10.

  Further, the friction sheet 11a of the friction portion 11 needs to have a length that reaches at least a position where the sheet is sandwiched and pressed between the upper surface of the friction plate 22 and the peripheral surface of the paper feed roller 23, and the length is appropriately adjusted. Then, by changing the area covering the friction plate 22, the strength of the rolling force due to the frictional resistance can be set as appropriate.

  As described above, the sheet feeding apparatus can easily change the sheet feeding force without increasing the cost by the present invention having a relatively simple configuration. In addition, according to the type of paper to be fed, paper can be easily and reliably fed one by one.

The perspective view which shows embodiment in this invention. FIG. 2 is a side view and an enlarged partial view of the rolling force adjuster of FIG. 1. FIG. 2 is an enlarged partial vertical cross-sectional view illustrating a state where the winding force adjusting tool of FIG. 1 is mounted on a paper feeding device. The longitudinal cross-section partial figure which shows a prior art example.

Explanation of symbols

  2C Paper Feeding Device, 10 Winding Force Adjuster, 11 Friction Part, 11a Friction Sheet, 12 Locking Part, 12a Locking Bracket, 12b Magnet, 20 Upper Table, 21 Paper Feeding Tray, 22 Friction Plate, 23 Paper Feeding Roller

Claims (5)

A sheet feeding device that feeds the sheets one by one from above by sandwiching the sheets stacked between the surface of the friction plate exposed on the upper surface of the upper table that supports the sheets substantially horizontally on the downstream side of the sheet tray and the peripheral surface of the sheet feeding roller In the rolling force adjuster for adjusting the locking force due to the frictional resistance to the lower surface of the paper so as to cover the friction plate from above and to be different from the friction plate,
A friction sheet having an upper surface frictional resistance larger than that of the friction plate; and a locking structure for locking the friction sheet on the upper table so that the friction plate cannot move in the sheet feeding direction. By increasing the locking force to the lower surface of the paper by mounting on the device,
A power adjusting device for a sheet feeding device.   The locking structure is formed by bending a plate-like member into a substantially L shape in a side view, and one of the inner surfaces forming the inner angle of the locking structure fixes the end side of the friction sheet and the other The sheet feeding device adjusting device according to claim 1, wherein the surface is in contact with and locked to a vertical surface on the upstream side of the upper table.   The said latching | locking part has a magnetic force generation | occurrence | production part in at least one part of the said inner surface, and reinforces a mounting state with the magnetic attraction force to the said upper table which consists of a magnetic body. The sheet-feeding device adjuster as described in 1.   4. The sheet feeding device according to claim 1, wherein the friction sheet has a frictional resistance enhanced by providing a pattern having a predetermined uneven structure on an upper surface of a rubber sheet. Adjustment tool.   The said pattern has a surface three-dimensional shape of the cloth formed by weaving or knitting yarns, The winding force adjusting tool of the sheet feeding device according to claim 4.

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