JP2009057171A - Separating plate covering tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separating plate covering tool capable of adjusting the separating force of a separating plate in a range on the resistant force side smaller than the friction resistance of the separating plate, and feeding sheets in a predetermined straight-going direction. <P>SOLUTION: The separating plate covering tool 20 is attachably/detachably fitted to a paper feeder for passing sheets stacked on a paper feed stand through a space between a paper feed roller and a separating plate arranged opposite to an outer circumferential surface of the paper feed roller, and comprises a covering plate 21 for covering an upper surface of the separating plate which is formed of a thin plate of the friction resistance smaller than that of the separating plate and has a cutout part 22 of the predetermined width extending in the longitudinal direction and opened forwardly, and a holder 25 which is fixed to a rear portion of the covering plate 21 and provided with a downward locking piece part 26 to be attached/detached to/from a rear end face of a table of the paper feed stand. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plaster covering tool that is detachably attached to a sheet feeding device that is used in a newspaper advertisement collating apparatus, a paper folding machine, and the like to separate and send stacked sheets one by one.

  In a newspaper advertisement collation device that gathers several types of flyers one by one and inserts them into a newspaper, the paper feed device that feeds the stacked pieces one by one on the supply stand is stacked on the paper feed stand. A sheet feeding device that sends out the passed sheet through a sheet feeding roller and a multi-feed (double feed) prevention separating plate disposed opposite to the outer peripheral surface of the sheet feeding roller is widely used. It is used.

In such a sheet feeding device, the frictional resistance force of the separating plate required for smooth sheet feeding varies depending on the material and thickness of the sheet to be fed. In the case of a sheet with a rough surface and high resistance, such as a tabloid newspaper, if the frictional resistance of the separating plate is large, the sheet may become clogged between the separating plate and the feeding roller, making it impossible to feed. Or torn by unreasonable feeding. In such a case, it is necessary to reduce the frictional resistance of the rake plate. In view of this, there is a paper-making member proposed in Patent Document 1, for example, which can replace the paper-making plate, and this has a smooth surface on the swing base that forms a sliding surface upstream in the paper feed direction. The sheet is not provided with this smooth surface and is not applicable to a sheet feeder having a general structure in which the sheet guide on the upstream side of the facing plate is performed by the cover of the sheet feeder. In addition, the smooth surface, its guide mechanism, springs, etc. have a number of parts, a complicated structure, and a high manufacturing cost.
Japanese Utility Model No.5-2504

  There has also been proposed a rolling force adjuster that increases the rolling force without replacing the rolling plate (see, for example, Patent Document 2). However, this is a sheet that covers the entire top surface of the scooping plate with a friction sheet having a higher frictional resistance than that of the scooping plate. Therefore, if the sheet to be fed is rough as described above, the frictional resistance of this friction sheet is reduced. It needs to be smaller than the board.

However, even when using a friction sheet with a low frictional resistance, if you want to change the frictional resistance to various sizes depending on the paper quality of the sheet to be fed, you can use various types of winding force adjusters with different frictional resistances. It is troublesome because it is necessary to replace the sheet each time it is prepared, and the sheet is not fed in a predetermined straight direction due to a decrease in frictional resistance, and is fed in a skew direction inclined on a plane with respect to the straight direction. It is easy to be papered and has a problem that the collation state is not uniform.
Utility Model Registration No. 3126986

  The present invention is intended to solve the above-mentioned conventional problems, and can adjust the rolling force of the rolling plate within a range of a small resistance force side with respect to the frictional resistance of the rolling plate, and also allows the seat to move in a predetermined rectilinear direction. An object of the present invention is to provide a scissor covering device that can feed paper.

  In order to achieve the above-mentioned object, the scooping plate covering device according to claim 1 is a scooping plate in which sheets stacked on a paper feed table are arranged facing a paper feed roller and an outer peripheral surface of the paper feed roller. A paper covering device that is detachably attached to a paper feeding device that passes between the paper and the paper, and is made of a thin plate material having a lower frictional resistance than that of the paper board, and extends in the front-rear direction and toward the front. A covering plate having a notch portion of a predetermined width that opens and covering the upper surface of the facing plate, and a downward facing that is fixed to the rear portion of the covering plate and is engaged with and disengaged from the rear end surface portion of the table of the paper feed table And a holding tool provided with a locking piece.

  In this invention, the “front” side refers to the downstream side (traveling direction side) in the sheet feeding direction, and the “rear” side refers to the upstream side in the sheet feeding direction. Further, the “left / right” direction refers to a left / right direction orthogonal to the front / rear direction.

  According to the invention of claim 1, in the state in which the covering plate covering tool is engaged with the rear end surface of the table of the sheet feed table, and the upper surface of the covering plate is covered with the covering plate, Mounted on the paper feeder. When the pressure contact force (rolling pressure) of the separation plate with respect to the sheet feeding roller in this mounted state is changed by the gap between the separation plate and the sheet feeding roller of the sheet feeding device or the gap adjusting mechanism, the pressure contact force is changed. When it is small, the outer periphery of the rubber tire of the paper feed roller contacts only the upper surface of the covering plate on the side plate (the upper surfaces of the strips on the left and right sides of the notch), but if the pressure contact force is increased, the rubber tire Due to the elastic deformation, the vicinity of the central portion in the width direction of the outer periphery of the rubber tire bulges into the notch portion of the covering plate and comes into contact with the surface of the scooping plate, and the contact (left and right) width increases as the pressure contact force increases.

  Therefore, when the sheet to be fed is frictionally driven by the sheet feeding roller in such a pressure contact state, the sheet deforming along the outer contour of the sheet feeding roller is more than the above-mentioned separating plate. A striking force in which the friction resistance force due to the contact with the surface of the notch portion is added to the friction resistance force of only the strip-like piece of the low frictional resistance covering plate, and the surface of the striking plate in the notch portion described above. The contact width can be adjusted by the above-mentioned pressure contact force, so that the winding force is adjusted within the range of the resistance side smaller than the frictional resistance force of the sheeting plate by adjusting the above-mentioned pressure contact force according to the paper quality of the sheet. Can do it. And since the sheet fed in a form that bulges into the notch portion of the cover plate is fed forward in a form bent by the upper edge portion extending in the front-rear direction of the notch portion of the cover plate, It is guided by the two upper edges and proceeds in the straight direction.

  Further, the scooping plate covering tool according to claim 2 is a striking plate covering tool according to claim 1, wherein a stopper that engages with a notch provided in the table of the paper feed table to restrict lateral movement of the holding tool, The holding tool is protruded downward.

  According to the second aspect of the present invention, the striking plate covering tool is prevented from being largely moved laterally by the engagement between the stopper and the notch, and the covering of the striking plate by the covering plate is reliably maintained.

  As described above, according to the separation plate covering device of the present invention, the separation force of the separation plate can be adjusted within the range of the smaller resistance force side than the friction resistance of the separation plate. Therefore, it is not necessary to replace the sheet covering member one by one, and the sheet can be fed in a predetermined straight direction by the guide action by the upper edge of the notch.

  In addition to the above effect, according to the invention described in claim 2, due to the engagement between the stopper and the notch, the lateral movement of the stroking plate covering tool is prevented, and the covering of the striking plate by the covering plate is reliably maintained. Thus, a paper feed error due to the lateral displacement of the covering plate covering tool is prevented.

  Hereinafter, an embodiment of the present invention will be described with reference to an example shown in FIGS. 1 and 2 show a paper feeder 1 of a newspaper advertisement collating apparatus in a state in which a scissor covering member 20 shown in FIG. 4 to be described later is mounted, and between left and right frames (not shown) as a base frame, A plurality of paper feed tables 2 extending in the horizontal direction are arranged at intervals in the vertical direction, and a paper feed roller 3 and an auxiliary roller 4 are disposed near the front end of each paper feed table 2. The paper feed table 2 includes a beam-like table portion 5 that is open at both ends fixed to the frame, and an inclined plate portion 7 that is tiltably supported on the frame by pins 6. Is covered with a cover 5a except for a notch 5b portion where a facing plate 10 which will be described later is exposed, and a flyer 8 to be fed is placed on the inclined plate portion 7 and the cover 5a in a stacked state.

  The paper feed roller 3 is configured such that a rubber tire 3a having serrated irregularities on the outer peripheral portion is fitted on the outer peripheral portion of the roller body 3b, and is freely rotatable on a bracket (not shown) that is suspended and fixed to the upper table portion 5. Are driven intermittently in the rotational direction indicated by the arrow R. The auxiliary roller 4 has a rubber tire similar to that of the paper feed roller 3 on the outer peripheral portion, is pivotally supported by a swing arm (not shown) that is swingably supported by the roller drive shaft 9, and is fed by a timing belt (not shown). It rotates in conjunction with the paper roller 3 to frictionally drive the uppermost flyer 8 at the time of paper feeding. For example, those of various known types such as those described in Japanese Utility Model Publication No. 1-1586 are used.

  Below the paper feed roller 3, a rubber scooping plate (piece piece) 10 for preventing double feed (double feed) of the flyer 8 is provided. The striking plate 10 is attached to the upper surface of a swing base 13 supported swingably around a support shaft 12 supported at both ends by brackets 11 fixed to the table portion 5 by fastening a presser fitting 14. ing. 15 is a gap adjustment mechanism that adjusts the gap between the separating plate 10 and the sheet feeding roller 3 or the pressure contact force (sheeting pressure) P in order to reliably supply the flyer according to the paper quality, thickness, and printing state of the flyer. Then, as shown in FIG. 3, the tilting table 16 is screwed to the bottom surface of the rocking table 13, and the rod-shaped holder 18 that holds the ball 17 in contact with the lower tilting surface 16 a and extends in the left-right direction, The holder 18 is moved forward and backward in the direction of the arrow J or K perpendicular to the paper feed direction (arrow X direction) to adjust the amount of inclination of the swing base 13, and the holder 18 is described in, for example, Japanese Utility Model Publication No. 55-38922. It is driven forward and backward by rotating the knob (dial).

  Next, FIG. 4 is a perspective view showing a state in which the tear plate covering tool 20 that is detachably attached to the sheet feeding device 1 is detached from the sheet feeding device 1, and has a lower frictional resistance than the facing plate 10. A metal plate holder 25 is fixed to the rear portion of the cover plate 21 made of a thin plate material by bonding. The covering plate 21 has a notch 22 having a predetermined width W (see FIG. 2) that extends in the front-rear direction and opens toward the front in a state where the cover plate 1 is attached to the sheet feeding device 1, and is a resin plate or a metal plate of various materials. The plate thickness is selected from the range of, for example, 0.2 to 0.7 mm according to the flexibility of the rubber tire 3 a portion of the paper feed roller 3. In this example, the thickness is made of polycarbonate having a thickness of 0.3 mm. A resin plate is used. Reference numeral 23 denotes a strip-like piece portion extending in the front-rear direction on the left and right sides of the cut-out portion 22, and the tip of the strip-like piece portion 23 extends forward beyond the front end portion of the separating plate 10 when mounted on the sheet feeding device 1. The left-right width V (see FIG. 2) of the plate 21 is larger than the left-right width of the facing plate 10, whereby the covering plate 21 has an outer dimension that covers the upper surface of the facing plate 10 (except for the notch 22). It has become a thing.

  The holder 25 is made of a bent product of a metal plate (in this example, a stainless steel plate), and as shown in FIGS. 1 and 2, the rear end surface portion of the table portion 5 (specifically, in this example, the rear of the cover 5a). And a stopper piece 27, 27 by bending downward the protruding ear piece on the left and right sides of the front end thereof. It is formed. When the stoppers 27 are attached to the paper feeding device 1, as shown in FIG. 5, the outer shapes of the stoppers 27, 27 are opposed to each other with a small gap 28 at the edge extending in the front-rear direction of the notch 5 b provided in the cover 5 a. (Left and right width) dimensions.

  In order to mount the plaster plate covering tool 20 having the above-described configuration to the paper feeding device 1, the holder 18 is moved by rotating a knob (not shown) of the gap adjusting mechanism 15 without the flyer 8 on the inclined plate portion 7 and the cover 5a. By moving in the direction of arrow J, the swing base 13 is rotated in the direction in which the tip portion is directed downward, a gap is formed between the scooping plate 10 and the paper feed roller 3, and the holder 25 is gripped by hand. After inserting the cover plate 21 part of the peeled plate cover tool 20 into the gap from the rear side of the paper feed roller 3, the holder 25 part is lowered and the stoppers 27, 27 are inserted into the notches 5b. And the latching operation to the rear-end surface part of the table part 5 of the latching piece part 26 is performed, and it is set as the mounting state shown in FIG.1 and FIG.2. Further, the separating plate covering tool 20 can be quickly and easily removed from the paper feeding device 1 by the reverse procedure to the above.

  Next, in order to feed the laminated plate 8 on the inclined plate portion 7 and the cover 5a in a state where the above-described separating plate covering tool 20 is mounted on the sheet feeding device 1, a knob (not shown) of the gap adjusting mechanism 15 is used. The holder 18 is moved in the direction of the arrow K by the rotation operation in the opposite direction to the above, and the swing base 13 is rotated in the direction in which the tip portion is directed upward, and is laminated on the upper surface of the facing plate 10 together with the facing plate 10. The cover plate 21 of the thus-prepared separating plate covering tool 20 is brought into pressure contact with the outer peripheral portion of the paper feed roller 3.

  In this pressure contact state, the outer peripheral portion of the rubber tire 3a of the paper feed roller 3 is pressed by belt-like pieces 23, 23 extending in the front-rear direction of the covering plate 21 of the scooping plate covering tool 20, as shown in FIG. The portions of the left and right widths S are elastically deformed in the direction of diameter reduction, and the portion facing the notch portion 22 of the cover plate 21 swells into the notch portion 22 as shown in FIG. Contact the surface of the plate 10. The contact width T of the rubber tire 3a with the facing plate 10 is wide when the pressure contact force P of the facing plate 10 (and the covering plate 21) with respect to the outer peripheral portion of the paper feed roller 3 is large, and narrow when the pressure is small. It becomes.

In view of this, in the state of pressure contact between the separating plate 10 and the cover plate 21 and the outer peripheral portion of the paper feed roller 3, the paper feed roller 3 is driven in the direction of arrow R and a normal paper feed operation is performed together with the auxiliary roller 4 interlocked therewith. The flyer 8 that is frictionally driven by the paper feed roller 3 and enters between the scooping plate 10 is deformed along the contour of the rubber tire 3 a shown in FIG. 6, and two widths S are formed on the lower surface of the flyer 8. the friction resistance force F ₁ by the contact with the covering plate 21 of the part, (depending like strength and thickness of the waist flyers, actual contact width becomes slightly larger than T) contact width T of the portion of the frictional resistance due to contact between the separating plate 10 F ₂ and is, will act as a separating force.

As described above, the contact width T with the facing plate 10 changes due to the pressure contact force (the facing pressure) P of the facing plate 10 (and the covering plate 21) against the paper feed roller 3. by adjusting the 10 upper and lower holding position), the frictional resistance force F ₂ can be a subtraction adjusted, without each time replacing the separation plate coated tool 20 according to the paper quality of the leaflets 8, adjustment of the separation force Can be done. The range in which the rolling force can be adjusted is such that the pressure contact force is increased and the pressure contact force is increased within the notch 22 from the frictional resistance force F ₁ only due to contact with the cover plate 21 with the pressure contact force reduced to the contact width T = 0. is in the above range lead to the total value of the maximum value of the frictional resistance force F ₂ and the frictional resistance force F ₁ when it becomes substantially equal to the width W of the contact width T is notch 22 at, separation plate covering member 20 without In this state, the striking force can be adjusted within the above range on the smaller resistance side than the frictional resistance force due to contact with the entire surface of the striking plate 10.

  Accordingly, the adjustable range varies depending on the thickness of the cover plate 21 and the width W of the notch 22, so by selecting the plate thickness and width W according to the range of paper quality to be fed, etc. Even if the object to be fed changes, smooth feeding can be performed by the same plaster plate covering tool 20. Note that the adjustment of the pressure contact force (upper and lower holding position of the separating plate 10) may be performed while checking the feeding state at the start of feeding of each feeding target, or trial feeding for each feeding target in advance. It is also possible to perform the switching rotation setting operation to the setting scale of the knob (dial) of the gap adjusting mechanism 15 set by.

  Further, the flyer 8 that bulges into the notch 22 of the cover plate 21 together with the rubber tire 3a that elastically deforms as described above as shown in FIG. Since the paper is fed forward in the form bent by the corner portions 22a and 22a, it is guided by the two upper edge portions 22a and travels in a predetermined straight traveling direction. Progress is prevented.

  During the above paper feeding, the downward locking piece portion 26 of the holder 25 engages with the rear end surface of the table portion 5, so that the front plate covering tool 20 is moved to the normal front and rear position without moving forward. In addition, the stoppers 27 and 27 of the holder 25 are engaged with the notches 5b of the cover 5a, so that the scooping plate covering tool 20 is prevented from largely moving laterally, and the covering plate 21 is reliably covered with the covering plate 21. Maintained.

  Note that when the sheet feeding target is not a single sheet such as the flyer 8 or the like, but a thick sheet in which a plurality of bi-fold sheets are overlapped, such as a tabloid newspaper, the sheeting plate 10 and the covering plate 21 described above are used. At the time of pressure contact with the outer peripheral portion of the paper feed roller 3, there may be a state where a small amount of gap exists between the outer peripheral portion and the upper surface of the cover plate 21, and in this state, the thick sheet thicker than the gap. When the sheet passes through the gap, the lower surface of the thick sheet comes into contact with the upper surface of the covering plate 21 (band-shaped piece portion 23) and the contact width T portion of the separating plate 10, so With this, paper can be fed.

  Next, FIG. 7 shows another example of the embodiment of the present invention, and this spreading plate covering tool 30 uses a holding tool 31 in which the stoppers 27, 27 of the holding tool 25 of the above example are omitted, and this holding is performed. 4 has the same configuration as that of the above-described stroking plate covering tool 20, except that a small-resin-made stopper 32 made of hard resin is bonded to the lower surface portion of the tool 31, and the same reference numerals are used for the same parts as in FIG. It attaches and shows, The detailed description is abbreviate | omitted. In addition, as shown in a chain line in FIG. 2, a rectangular hole-shaped notch 35 into which the stopper 32 is fitted with a small gap is provided in the cover 5 a of the table portion 5 as the notch to which the stopper 32 is fitted and removed. To do. The stopper 32 may be a small cylindrical piece, and the notch 35 to be fitted may be a round hole.

  In this example, the stroking plate covering tool 30 is adjusted to the striking force except that the striking plate covering tool 30 is prevented from lateral movement by the engagement of the stopper 32 and the notch 35 when mounted on the paper feeding device 1. The operation and effect similar to those of the above example can be obtained, such as the operation and the skew prevention effect of the flyer 8.

  The present invention is not limited to the above examples. For example, the specific structure such as the material quality and dimensions of each of the straddle plate coverings 20 and 30 may be other than the above, and the stoppers 27 and 27 in the above examples may be used. 32 may be omitted, or a thin plate magnet, double-sided adhesive tape, or the like may be attached to the holder instead of these stoppers so as to be fixed to the table portion 5.

It is a longitudinal cross-sectional view (the AA sectional view taken on the line of FIG. 2) of the paper feeder which shows an example of embodiment of this invention. FIG. 2 is a plan view of a main part of a sheet feeding table portion of the sheet feeding device of FIG. 1. It is the BB sectional view taken on the line of FIG. It is a perspective view in the state where it removed from the paper feeder of the board covering tool in FIG. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is a lower surface side perspective view of the board covering device which shows other examples of this embodiment of the invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Paper feed apparatus, 2 ... Paper feed stand, 3 ... Paper feed roller, 3a ... Rubber tire, 5 ... Table part, 5a ... Cover, 5b ... Notch, 8 ... Flyer, 10 ... Thatch board, 13 ... Swing stand, DESCRIPTION OF SYMBOLS 15 ... Gap adjustment mechanism, 20 ... Thatched plate covering tool, 21 ... Covering plate, 22 ... Notch part, 25 ... Holding tool, 26 ... Holding piece part, 27 ... Stopper, 30 ... Thatching plate covering tool, 31 ... Holding tool, 32 ... stopper, 35 ... notch.

Claims (2)

It is detachably mounted on a sheet feeding device that feeds sheets stacked on the sheet feeding table through a sheet feeding roller and a separating plate disposed opposite to the outer peripheral surface of the sheet feeding roller. That is,
A covering plate for covering the upper surface of the stroking plate, which is made of a thin plate material having a lower frictional resistance than the stroking plate, has a notch portion with a predetermined width extending in the front-rear direction and opening forward;
A holding tool that is fixed to the rear portion of the cover plate and has a downward locking piece portion that is engaged with and disengaged from the rear end surface portion of the table of the paper feed table,
A board covering device characterized by comprising.   2. A straddle plate covering device according to claim 1, wherein a stopper that engages with a notch provided on a table of the paper feed table to restrict lateral movement of the holding device is provided to protrude downward from the holding device. .

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