JP2008230793A - Delivery roller of sheet feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a sheet feeding device capable of surely delivering a sheet in a thickness equivalent to cardboard used for a cover of a book from one by one without troubles such as double delivery or stop of the device, and capable of easily adjusting in accordance with sheets having different thickness, and capable of easily maintaining or replacing damaged parts. <P>SOLUTION: In this delivery roller of the sheet feeding device, the delivery roller on an upper part of a delivery port is constituted by a rotating part and a fixed part, a rear part of the fixed part is protruded backward from a rear part of the rotating part, and positions of the rotating part and the fixed part can be simultaneously adjusted by a single position adjusting means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a feeding roller of a sheet feeding apparatus configured to accumulate and store sheets having a thickness of about a thick paper used for a book cover in a sheet storage unit and to feed the sheets one by one from a feeding port of a feeding unit. More specifically, the present invention relates to a feeding roller of a sheet feeding device having the following configuration.
<Configuration 1>
A frame part that is a framework of the entire configuration of the apparatus, a storage part that stores a plurality of stacked sheets, a support part that supports rear end parts of the plurality of stacked sheets, and a storage part that is stacked on the storage part A conveying unit that conveys the lowest sheet of the plurality of sheets, a feeding unit having a feeding roller that feeds only the lowest sheet of the plurality of stacked sheets from the feeding port, and the fed sheet In the feeding section of the sheet feeding apparatus, which includes a discharge section that discharges the sheet to the outside of the apparatus, a power section that supplies power to the conveyance section and the discharge section, and a control section that controls the power section, The feeding roller located at the upper part is composed of a rotating part and a fixed part, and when the upper surface of the ascending part of the feeding belt of the conveying part is a reference plane and the direction in which the sheet is fed is forward, the rear part of the fixing part is Behind the rear of the rotating part That is, it protrudes in the direction of the storage portion, and the position adjustment of the rotating portion and the fixed portion can be performed simultaneously by a single position adjusting means, and only the lowermost sheet has the upper surface of the upper portion of the feeding belt and the feeding roller. A feeding roller of a sheet feeding apparatus, wherein the feeding roller is configured to be sandwiched between rotating portions and fed from a feeding port, and a sheet immediately above is locked to a fixed portion.
<Configuration 2>
The rotating portion of the feeding roller is a roller, and the outer portion of the roller is pivotally mounted with a ball bearing mechanism with respect to the pivot fixed to the position adjusting means, and the fixed portion of the feeding roller rotates. It is fixed to the position adjusting means by a cylindrical body or disk body having the same diameter as the portion, and the center of the cylindrical body or disk body of the fixed portion is rearward from the center of the roller that is the rotating portion, that is, in the direction of the sheet storage portion. The feeding roller of the sheet feeding apparatus according to Configuration 1, wherein a configuration is realized in which the rear portion of the fixed portion projects rearward from the rear portion of the rotating portion, that is, toward the storage portion by being eccentric.
<Configuration 3>
It has a central axis to which a cylindrical body or a disk body which is a fixed part of the feeding roller is fixed, and the central axis is fixed integrally with a pivot of the roller which is a rotating part. The configuration according to Configuration 2, wherein a configuration in which the rear portion of the fixed portion protrudes rearward from the rear portion of the rotating portion, that is, toward the storage portion is realized by the center of the central axis being eccentric. A feeding roller of the sheet feeding device.
<Configuration 4>
The lower part of the position adjusting means is configured as a roller holder that fixes the pivot of the rotating part of the feeding roller, and the pivot is fixed to the holder of the roller holder by releasing the pivot fixing means that fixes the pivot of the rotating part to the holder part of the roller holder. It is possible to rotate freely within the holder part, thereby enabling the central axis of the cylindrical body or disk body, which is a fixed part, to be rotatable with respect to the pivot axis of the roller, and fixing the pivot axis of the roller again at an arbitrary position. 4. A feeding roller for a sheet feeding apparatus according to claim 3, further comprising a pivot fixing means capable of fixing the relative positional relationship between the fixed portion and the rotating portion.

  2. Description of the Related Art Conventionally, there has been known a sheet supply apparatus configured to store sheets having a thickness of about a thick sheet used for a book cover in a sheet storage unit and to feed the sheets one by one from a feeding port of a feeding unit. An example of this conventional sheet supply apparatus Sf is shown in FIGS.

  As shown in FIGS. 23 and 24, the conventional sheet feeding device Sf has a frame portion Fr that is a framework of the entire configuration of the device and a plurality of sheets S, S,... (See FIG. 24). A storage portion Sh for storing in a state, a plurality of stacked sheets S, S,... Supporting a rear end portion (see FIG. 23), a plurality of sheets S stacked on the storage portion Sh, .. For feeding the lowest sheet S1 of S,... And the lowest sheet S1 of the plurality of stacked sheets S, S,. A feeding unit So having a feeding roller rs with a position adjusting means cl, a discharging unit D for discharging the fed sheet S1 out of the apparatus, a power unit P for supplying power to the conveying unit C and the discharging unit D, power It is comprised from the control part L which controls the part P. FIG.

  FIG. 24 shows a state in which the feeding portion So is viewed from the right side, and FIG. 25 shows a case where x is a rearward direction parallel to the upper surface b1 of the ascending portion of the feeding belt b of the conveying portion C (see FIG. 24). It is the front view which notched a part at the time of seeing feeding part So from the direction x. However, in FIG. 25, the support part Ss and the frame part Fr that should be visible in the rear are omitted, and the discharge part D located at the front part is also omitted, and only a part of the feeding part So and the transport part C are omitted. it's shown. The plane formed by the upper surface b1 of the ascending portion of the feeding belt b of the conveyance unit C will be referred to as a reference plane SP in the sheet feeding device Sf hereinafter. Moreover, let the direction in which the discharge part D is located be a front.

  The configuration of the conventional sheet supply device Sf will be described in more detail. The frame body portion Fr of the sheet supply device Sf is configured such that the left side plate Fr1, the right side plate Fr2, the lid plate Fr3, and the rear plate Fr4 are fixed to each other. The part extending to the upper part protrudes upward, the shaft sx is fixed over the middle part, and the support plate sb is fixed over the front part. Further, the cover plate Fr3 is installed and fixed to the rear upper ends of the left side plate Fr1 and the right side plate Fr2 to cover the entire rear part of the sheet supply device Sf, and the rear plate Fr4 covers the entire back surface of the sheet supply device Sf. The rear plate Fr4 is equipped with operation switches and a power cord (both not shown).

  The bottom sides of the left side plate Fr1 and the right side plate Fr2 are installed in parallel to the horizontal plane GL (see FIGS. 24 and 26), but the upper rear portions of the left side plate Fr1 and the right side plate Fr2 are formed so as to be included in the reference plane SP. Therefore, the substantially upper surface of the cover plate Fr3 provided on the rear of the upper end of the left side plate Fr1 and the right side plate Fr2 is also included in the reference plane SP. Furthermore, since the upper surface b1 of the ascending portion of the feed belt b of the transport unit C is configured to coincide with the reference plane SP as described above (see FIGS. 24 and 26), the transport unit C is also entirely forward. Configured to tilt. That is, the upper surfaces of the left and right plates Fr1 and Fr2 and the upper surface of substantially the entire upper surface of the cover plate Fr3 and the upper surface b1 of the ascending portion of the feed belt b of the transport unit C are all included in the reference plane SP. In this case, the inclination angle, that is, the angle α formed by the horizontal plane GL and the reference plane SP is often about 10 °, although there are differences depending on the apparatus.

  The conveyance section C is mounted on the shafts cx1 and cx2 rotatably provided on the left side plate Fr1 and the right side plate Fr2, respectively, on the large feed rollers R and R, and on the shafts cx3 and cx4 via the small feed rollers r and r, respectively. .. Are aligned in the lateral direction of the apparatus, and the upper surfaces b1, b1,... (See FIG. 24) of the ascending portion of the feed belts b, b,. In this manner, the same reference plane SP as the cover plate FR3 is disposed. As shown in FIG. 24, the small feed rollers r, r are arranged so that the ascending belts of the feed belts b, b,... Are completely included in the reference plane SP. The shafts cx1 to cx4 are rotatably provided to the left side plate Fr1 and the right side plate Fr2, respectively.

  A discharge unit D is provided at the front of the sheet supply device Sf. The discharge part D is provided above the discharge belt db and the discharge belt db mounted on the shafts dx1 and dx3 rotatably provided on the left plate Fr1 and the right plate Fr2 via the discharge rollers dr and dr. It is comprised from the discharge press part Dp. In addition, ds, ds,... Are discharge support plates that are appropriately disposed on the extensions of the shafts dx1, dx3, and the shafts dx1, dx3 are rotatably inserted into the discharge support plates ds, ds,. In addition, a shaft dx2 fixed to the discharge support plates ds, ds,... Is inserted between the shafts dx1, dx3. The shaft dx2 is also fixedly provided to the left side plate Fr1 and the right side plate Fr2.

  The upper surface dsa of the upper part of the discharge belt db and the upper surfaces dsa, dsa of the discharge support plates ds, ds,... Are the upper surfaces b1, b1,. Are arranged on the same reference plane SP. Therefore, as shown in FIG. 24, the upper surface db1 of the upper part of the discharge belt db and the upper surfaces dsa, dsa,... Of the discharge support plates ds, ds,.

The discharge presser portion Dp is composed of three presser rollers dpr, dpr, dpr suspended through a height adjusting mechanism hc at the center of a support plate sb that is fixedly attached to the left side plate Fr1 and the right side plate Fr2. The rollers dpr, dpr, dpr are arranged so as to be located immediately above the upper surface db1 of the upper portion of the discharge belt db. The three pressing rollers dpr, dpr, dpr are rotatably mounted on the frame dfr of the discharge pressing portion Dp, from the surface of the pressing rollers dpr, dpr, dpr to the upper surface db1 of the upper portion of the discharge belt db. The distance d3 (see FIG. 26) can be finely adjusted by the handle dh (see FIG. 24). The mechanism relating to the fine adjustment is a known technique and is not related to the main part of the present invention, and therefore detailed description thereof is omitted. However, the principle is substantially the same as the fine adjustment of the adjustment axis cx of the feeding portion So described later. Is used for fine adjustment of the distance d3.

  Above the intermediate portion of the sheet supply device Sf, as described above, the shaft sx is provided and fixed to the left plate Fr1 and the right plate Fr2, and the sheet presser is provided near the left end of the shaft sx via the position adjusting mechanism hc1. A plate sh1 is mounted (see FIG. 23), and a sheet pressing plate sh2 is mounted near the right end of the shaft sx via a position adjusting mechanism hc2. The sheet pressing plates sh1 and sh2 are configured to prevent the plurality of sheets S, S,... Deposited in the storage unit Sh from moving in the lateral direction. The lower ends of the sheet pressing plates sh1 and sh2 are set at positions appropriately separated from the reference plane SP, and the distance d4 (see FIG. 26) is 1 of the thickness (ds1) of one sheet S. Within the range of 5 to 5 sheets. This distance d4 is fixed after the sheet feeding device Sf is once assembled, and is not finely adjusted. Ds2 indicates the thickness of two sheets S.

  The left and right positions of the sheet pressing plates sh1 and sh2 can be adjusted by operating the handles hn1 and hn2 (see FIG. 23) to slide the position adjusting mechanisms hc1 and hc2 along the axis sx. That is, if the handle hn1 is loosened, a slight gap is generated between the two members hc11 and hc12 forming the position adjusting mechanism hc1, and the entire position adjusting mechanism hc1 can be slid along the axis sx. If hn2 is loosened, a slight gap is generated between the two members hc21 and hc22 forming the position adjusting mechanism hc2, and the entire position adjusting mechanism hc2 can be slid along the axis sx. The adjusting mechanisms of the position adjusting mechanisms hc1 and hc2 are well-known techniques and are not related to the main part of the present invention and will not be described in detail. However, the sheet pressing plates sh1 and sh2 according to the lateral width of the sheet S to be stored. Are adjusted so that the distance between the sheet pressing plates sh1 and sh2 is substantially the same as the horizontal width of the stored sheet S.

  The support portion Ss is mounted on the upper surface of the lid plate Fr3 of the frame body portion F, and has a structure in which the support plates t, t,. Thus, the whole position can be slid back and forth on the upper surface of the cover plate Fr3 by the position adjusting mechanism ssc. The mechanism of the position adjustment mechanism ssc is a known technique and is not related to the main part of the present invention, so it will not be described in detail. However, by loosening the handle hb, the entire support part Ss can be slid back and forth, and the handle hb If tightened, the entire support portion Ss is fixed at that position.

The support part Ss has the following actions. That is, the lower end of the sheet S, S,... Accumulated in the storage portion Sh is placed on the front end portion of the support plate t, t,. The lower portion is slightly lifted, and the load applied to the lowermost sheet S1 (see FIGS. 24 and 26) is reduced, so that the lowermost sheet S1 is conveyed more smoothly. Depending on the length of the stacked sheet S in the front-rear direction, the support portion Ss is such that the lower portion of the rear end of the sheets S, S,... Is slightly placed on the front end portion of the support plates t, t,. The position before and after the position adjustment mechanism ssc is adjusted.

  The driving unit P includes a motor m and a driving shaft mx stored in the rear right end portion of the sheet feeding device Sf, and a driving roller mr fixed to the driving shaft mx. A driving belt mb is wound around the driving roller mr. Yes. The driving belt mb is clamped and pinched between the pinch rollers pr1 and pr2 at two positions in front of the driving roller mr, and is fixed to the rollers tR1 and tR2 and the shafts cx3 and cx4 fixed to the axes cx1 and cx2 of the conveying unit C. It is wound around the rollers tr1 and tr2. Accordingly, the driving force generated by the motor m is transmitted to the transport unit C through the driving belt mb, and the shafts cx1, cx2, cx3, and cx4 are rotated in the same direction as the driving shaft mx of the motor m.

  A roller tR3 is fixed to the shaft cx2 of the conveying unit C adjacent to the roller tR2 in the vicinity of the right end, and a roller tr3 having a slightly smaller diameter than the roller tR3 is fixed to the vicinity of the right end of the shaft dx1 of the discharge unit D. A transmission belt tm1 is wound around the roller tr3. Further, on the shaft cx2, a roller tR4 having the same diameter as the roller tR3 is fixed near the left end, and a roller tr4 having the same diameter as the roller tr3 is fixed near the left end of the shaft dx1 of the discharge portion D. A transmission belt tm2 is wound around tr4. Thereby, the rotation of the shaft cx2 is transmitted to the shaft dx1, but since the roller tr3 has a slightly smaller diameter than the roller tR3 and the roller tr4 has a slightly smaller diameter than the roller tR4, the rotational speed of the shaft dx1 is the rotation of the shaft cx2. Slightly faster than speed.

  A control unit L that controls the movement of the motor m is stored in the lower rear portion of the sheet supply device Sf. Since the control unit L is a known technique and is not related to the gist of the present invention, it will not be described in detail, but it controls the start and stop of the motor m, controls the rotational speed of the motor m, and controls the motor m. Performs general control such as intermittent operation like a stepping motor. In FIG. 23, all codes such as codes connecting the control unit L and the motor m are omitted.

  As shown in FIGS. 23 to 24, the feeding portion So is a support plate fixed to the shaft sx in the middle of the front plates f1 and f2 fixed to the shaft sx via the attachments a1 and a2 and the attachments a1 and a2. p, an adjusting shaft cx inserted through a circular hole h1 drilled in the central portion of the support plate p, a receiving member cp having a screw hole h2 into which a lower end portion of the adjusting shaft cx is screwed, and a receiving device cp as a bearing br. The connecting tool cc is connected to and fixed to the shaft, the shaft rx is rotatably provided on the bearing br, and the feeding roller rs is fixed to the shaft rx. A first feeding port n1 having a distance d1 is formed between the lower ends f1a and f2a of the front plates f1 and f2 and the upper surface b1 of the ascending portion of the feeding belt b of the transport unit C, and the feeding and the lower end rsa of the feeding roller rs. A second feeding port n2 having a distance d2 is formed between the upper surface b1 of the ascending portion of the belt b. In addition, the delivery port n is a general term for the 1st delivery port n1 and the 2nd delivery port n2.

  The front plates f1 and f2 and the attachments a1 and a2 are connected in a configuration as shown in FIG. That is, long holes o1 and o2 are formed in the upper portion of the front plate f1, and long holes o3 and o4 are formed in the upper portion of the front plate f2. On the other hand, screw holes ha2 and ha3 are formed on the back surface of the attachment a1, and screw holes ha5 and ha6 are formed on the back surface of the attachment a2. Further, the shaft sx is inserted and fixed in the circular hole ha1 in the front portion of the attachment a1 and the circular hole ha4 in the front portion of the attachment a2.

  The front plate f1 and the attachment a1 are fixed by inserting the bolt bt through the long hole o1 and screwing into the screw hole ha2, and inserting the bolt bt through the long hole o2 and screwing into the screw hole ha3. The front plate f2 and the attachment a2 are fixed by inserting the bolt bt through the long hole o3 and screwing into the screw hole ha5, and inserting the bolt bt through the long hole o4 and screwing into the screw hole ha6. Note that wa is a washer.

  At this time, the fixing position of the attachment a1 can be finely adjusted in the vertical direction depending on which part of the long holes o1 and o2 of the front plate f1 the bolt bt is inserted. Further, the fixing position of the attachment a2 can be finely adjusted in the vertical direction depending on which part of the long holes o3 and o4 of the front plate f2 the bolt bt is inserted. Since the shaft sx is fixedly attached to the left side plate Fr1 and the right side plate Fr2, the positions of the attachments a1, a2 are also fixed, but due to the action of the long holes o1, o2, o3, o4, the front plates f1, f2 Fine adjustment of the vertical position is possible. That is, in FIG. 25, the distance d1 between the lower ends f1a and f2a of the front plates f1 and f2 and the upper surface b1 of the ascending portion of the feed belt b is adjustable, and the opening of the first feeding opening n1 is possible. The condition is adjustable.

  As shown in FIGS. 24 and 25, a handle h is fixed to the top of the adjustment shaft cx, and a nut nt1 is fixed to the adjustment shaft cx at a portion where the adjustment shaft cx is inserted through the support plate p. The adjustment shaft cx is fixed so as not to drop off from the support plate p by the action of the nut nt1. Further, the adjustment shaft cx is formed with a screw thread from the middle portion to the lower end portion, and a nut nt2 is screwed to the upper end portion of the screw thread, and the coil spring cs is compressed between the lower surface of the support plate p and the upper surface of the nut nt2. It is wound in the state that was done. Therefore, the coil spring cs always urges the adjustment shaft cx downward through the nut nt2.

  The lower end portion of the adjustment shaft cx is screwed into a screw hole h2 drilled inside a cylindrical body cp2 protruding from the upper surface of the receiving member cp. The receiving body cp has the above-described cylindrical body cp2 projecting from the upper surface of a rectangular parallelepiped main body cp1, and the cylindrical body cp3 projecting from the lower surface, and the body cp1, the cylindrical bodies cp2, and cp3 are all configured integrally. (See FIGS. 23 to 25).

  The connector cc has a rectangular parallelepiped shape, and a circular hole h3 into which the cylindrical body cp3 of the receiver cp is inserted is formed on the upper surface. Further, the bearing br is a plate body bent so that the front view becomes a gate shape, and the upper portion of the bearing br is screwed to the connecting tool cc and the receiving tool cp as shown in FIG. It is integrated with the receptacle cp.

  When the handle h at the top of the adjustment shaft cx is rotated to the right in plan view, the lower end portion of the adjustment shaft cx is screwed deeply into the screw hole h2 in the cylindrical body cp2 of the receiver cp, but the upper portion of the adjustment shaft cx. Is fixed to the support plate p. As a result, the receiving tool cp, the connecting tool cc, the bearing br, and the feeding roller rs are raised. Conversely, when the handle h at the top of the adjustment shaft cx is rotated counterclockwise in plan view, the lower end of the adjustment shaft cx is screwed out of the screw hole h2 in the cylindrical body cp2 of the receiving device cp, and as a result, the receiving device cp The connector cc, the bearing br, and the feeding roller rs are lowered. That is, by rotating the handle h, the height d of the feeding roller rs, that is, the distance d2 between the lower end rsa of the feeding roller rs and the upper surface b1 of the upper portion of the feeding belt b can be finely adjusted. That is, it is possible to finely adjust the degree of opening of the second feeding port n2. This whole is referred to as position adjusting means cl.

  The configuration of the conventional sheet supply device Sf is as described above. Next, the operation of the conventional sheet supply device Sf will be briefly described. As shown in FIG. 24, the conventional sheet feeding device Sf uses sheets S, S,. Sheets S, S,... Are stacked with the left and right ends limited to the sheet pressing plates sh1 and sh2 (see FIG. 23) of the storage portion Sh and the front ends limited to the front plates f1 and f2 of the feeding portion So. . Since the reference plane SP on which the lowermost sheet S1 is placed is inclined forward by an angle α with respect to the horizontal plane GL (see FIG. 26), the sheets S, S,. As long as it is limited, the rear end may be open. As described above, the lower end portion of the rear end portion of the sheet S, S,... Is slightly lifted by the action of the support portion Ss.

  In this state, when the motor m is rotated counterclockwise when viewed from the right side, the drive belt mx moves so that the ascending portion moves from the rear to the front, and the shafts cx1 to cx4 of the transport unit are counteracted when viewed from the right side. By rotating in the clockwise direction, the ascending portion of the feed belt b moves from the rear to the front. As a result, the lowermost sheet S1 placed directly on the upper portion of the feed belt b is conveyed from the rear to the front, and the lower ends f1a and f2a of the front plates f1 and f2 and the upper surface b1 of the upper portion of the feed belt b. And passes through the first delivery port n1 formed between the lower end rsa of the feed roller rs and the second delivery port n2 formed between the upper surface b1 of the upper portion of the feed belt b.

  At this time, by adjusting the distance d1 of the first delivery opening n1 to be equal to or greater than the thickness ds1 for one sheet S and less than the thickness ds2 for two sheets, only the lowest sheet S1 is allowed to pass through, and the sheet S1 The sheet S2 immediately above can be placed in a stopped state. However, in actuality, the thicknesses of the sheets S, S,... Are slightly different, and the sheets S, S,. In some cases, the distance d1 is adjusted to be slightly more than 1.5 times the thickness ds1 of one sheet S. By doing so, it becomes easier to obtain a desirable state in which only the lowest sheet S1 is passed and the sheet S2 immediately above the sheet S1 is placed in a stopped state. That is, at the moment when the rear end portion of the lowermost sheet S1 has completely passed through the first feeding port n1, the immediately above sheet S2 is positioned at the first feeding port n1 and starts passing through the first feeding port n1. A desirable state is more easily obtained.

  Next, regarding the adjustment of the distance d2 of the second feeding opening n2, this distance d2 is adjusted to be slightly narrower than the thickness ds1 of one sheet S. That is, the front end portion of the lowermost sheet S1 conveyed to the second feeding port n2 by the conveying force of the feeding belt b cannot normally pass through the second feeding port n2, but the feeding belt b can be conveyed even in this portion. As a result, the front end portion of the lowermost sheet S1 is fed forward between the lower end rsa of the feeding roller rs and the upper surface b1 of the ascending portion of the feeding belt b, that is, the second feeding port n2. . At this time, since the feeding roller rs is biased downward by the action of the coil spring cs (see FIGS. 24 and 25), the lowermost sheet S1 is sandwiched between the feeding roller rs and the upper portion of the feeding belt b. , Surely transported forward.

  The lowermost sheet S1 conveyed forward is next caught by the upper surface of the discharge belt db of the discharge portion D and the pressing rollers dpr, dpr, dpr, further conveyed forward, and discharged to the front of the sheet supply device Sf. Is done. At this time, as described above, in the transmission mechanism for transmitting power from the conveyance unit C to the discharge unit D, the rollers tr3 and tr4 of the shaft dx1 have a smaller diameter than the rollers tR3 and tR4 of the shaft cx2, and as a result, the shaft The shaft dx1 rotates faster than cx2, and the discharge belt db is operated at a speed higher than that of the transport belt b.

  As a result, when the lowest-order sheet S1 fed out from the second feed-out port n2 is delivered to the discharge unit D, the moving speed is increased. Therefore, when the sheet S2 immediately above the lowest sheet S1 is fed out from the second feeding port n2, the entire lowermost sheet S1 is already placed on the discharge belt db and is faster than the moving speed of the immediately upper sheet S2. Since the sheet is discharged forward at a speed, a gap is generated between the lowermost sheet S1 and the immediately upper sheet S2. As described above, the configuration in which the gaps are generated between the fed sheets S, S,... Ensures the operation reliability that the sheets S, S,. Further guarantee.

  However, as shown in FIG. 26, for example, if the conveying speed of the feeding belt b and the discharging belt db is different in a state where the sheet S1 is located in both the feeding portion So and the discharging portion D, the sheet S1 and the feeding belt b or A deviation occurs between the sheet S1 and the discharge belt db, and there is a concern that the deviation may cause a disturbance in the moving speed of the sheet S1. Therefore, in the discharge portion D, the distance d3 between the lower end dra of the discharge roller dr and the upper surface db1 of the upper portion of the discharge belt db is adjusted to be slightly larger than the thickness ds1 of the sheet S. That is, the lower end dra of the discharge roller dr and the upper surface db1 of the upper portion of the discharge belt db do not bite the sheet S1, and the discharge roller dr keeps the surface of the sheet S1 lightly.

The fine adjustment is performed by the above-described height adjusting mechanism hc. As a result, the sheet S1 has the same moving speed as that of the feed belt b while the sheet S1 is caught in the second feeding opening n2. Since the influence of the feeding belt b is lost at the same time as the rear part of the sheet S1 passes through the second feeding opening n2, the sheet S1 has the same speed as the moving speed of the discharge belt db, that is, the sheet S1 is the first. It is discharged at a faster speed than the state of being bitten in the double feed outlet n2. As a result, the moving speed of the sheet S1 is instantaneously switched, and a situation in which the moving speed becomes unstable is avoided. That is, troubles such as overlapping of the sheets S1 and S2 due to the indefinite movement speed are avoided, and a stable configuration in which the sheets S, S,.

  Although the operation of the conventional sheet supply device Sf is as described above, various problems have been pointed out from the actual work site regarding the operation of the conventional sheet supply device Sf. Among them, the biggest problem is that depending on the material and thickness of the sheet S, the sheets S are not supplied one by one, but two sheets are supplied at the same time, or are caught in the first feeding port n1 and the second feeding port n2. It is a trouble that supply is stopped. In this regard, particularly, it is difficult to adjust the opening degree of the first feeding opening n1, and if the opening degree adjustment of the first feeding opening n1 is not appropriate, two sheets S are supplied simultaneously or the supply is stopped. It has become clear that trouble occurs frequently.

  As described above, the degree of opening of the first feeding port n1, that is, the distance d1, is the distance between the lower ends f1a and f2a of the front plates f1 and f2 and the upper surface b1 of the upper part of the feeding belt b. Is finely adjusted by moving the front plates f1 and f2 up and down. As described above, it is optimal that the distance d1 is slightly more than 1.5 times the thickness of the sheet S. As the thickness of the sheet S changes, it is necessary to perform adjustment again. However, this adjustment is a difficult task even for those who are used to it.

  The main cause of the difficult work is that the mechanism for moving the front plates f1, f2 up and down to adjust the distance d1 is a bolt bt that fixes the front plates f1, f2 to the attachments a1, a2 as shown in FIG. , Bt,... Are loosened, the front plates f1, f2 are slightly slid in the vertical direction with respect to the attachments a1, a2, positioned, and then tightened with the bolts bt, bt,. It is in the point which has taken. That is, the bolt holes drilled in the front plates f1 and f2 are the long holes o1, o2, o3, and o4. The bolts bt are searched for appropriate positions in the long holes o1, o2, o3, and o4. , Bt,... Are required to slide, and this is a difficult task even for a worker who has become accustomed.

  Moreover, this operation must be performed over both front plates f1 and f2. Since the front plates f1 and f2 are not connected and the positioning adjustment work is separately performed on both sides, the opening degree of the first outlets n1 and n1 formed at both lower ends of the front plates f1 and f2 ( Even if only the distance d1) is set, it is a serious work, and in order to make the distance d1 both right and left appropriately 1.5 times the thickness ds1 of one sheet S, considerable skill is required. The

  On the other hand, the adjustment of the opening degree of the 2nd delivery outlet n2 (distance d2) is a comparatively easy operation | work. That is, the degree of opening of the second feeding port n2 (distance d2) can be finely adjusted by rotating the handle h of the feeding part So, so that the degree of opening of the first feeding port n1 (distance d1) can be adjusted. The distance d1 can be appropriately adjusted to be slightly smaller than the thickness of one sheet S if it is much simpler and a little more familiar.

  If the sheet S to be fed is always of a constant thickness and of a constant material, once the opening degree of the first outlet n1 (distance d1) is adjusted appropriately even if it is troublesome, Although troubles are relatively reduced, at the site where the thickness and material of the sheet S frequently change, it is difficult to adjust the opening degree of the first delivery port n1 (distance d1). It will drive as it is. Then, naturally, troubles due to this occur frequently, and each time the operation is started, the opening degree of the first delivery port n1 (distance d1) must be adjusted again, which also affects the entire work.

That is, the operation of supplying sheets one by one from the sheet supply device Sf is one step in the entire operation, but by stopping this portion, the flow of the entire operation is interrupted. This was a major factor causing work efficiency to deteriorate. Therefore, the opening degree of the first feeding port n1 (distance d1), which is the main cause of the above-mentioned problems, can be adjusted easily and accurately. The development of a sheet feeding device that can be fed out one by one has been desired.

In the conventional sheet supply apparatus Sf, there is another reason why the sheets S cannot be reliably supplied one by one. As apparent from FIG. 24, this is because a distance δ exists between the first delivery port n1 formed by the front plates f1 and f2 and the second delivery port n2 formed by the delivery roller rs.

That is, while the lowermost sheet S1 is fed from the first feeding port n1 and is bitten by the second feeding port n2, and is conveyed, the lowermost sheet S1 passes immediately above the first feeding port n1. The sheet n2 does not completely fall to the lowest position. While the rear end portion of the lowermost sheet S1 is passing, even if the rear end portion of the immediately upper sheet n2 falls and contacts the feeding belt b, the front end portion of the uppermost sheet n2 is behind the lowermost sheet S1. It remains locked while it is placed on the end.

However, at the moment when the rear end portion of the lowermost sheet S1 has passed through the first feeding port n1, the front end portion of the immediately upper sheet S2 also falls and comes into contact with the feed belt b, so that the uppermost sheet S2 is lowermost. The sheet S1 is continuously conveyed forward by the feed belt b. However, in this state, the rear part of the lowermost sheet S1 is still in the state of being bitten by the second feeding opening n2.

Now, comparing the speed at which the lowermost sheet S1 is conveyed with the speed at which the uppermost sheet S2 is conveyed, the lowermost sheet S1 rotates the feeding roller rs at the second feeding opening n2. Therefore, the energy is slightly consumed correspondingly, and the speed at which the lowermost sheet S1 is conveyed is slightly slower than the speed at which the immediately upper sheet S2 is conveyed.

In a state where the amount of sheets S, S,... Deposited in the storage section Sh is large, a part of the weight of the sheets S, S,. A part of the sheet S2 is supported by the support part Ss), and the speed at which the immediately upper sheet S2 is conveyed is rather slightly lower than the speed at which the lowermost sheet S1 is conveyed. In this case, no problem occurs. As the amount of the sheets S, S,... Decreases, the speed at which the immediately upper sheet S2 is conveyed gradually increases.

In this way, when the speed at which the immediately upper sheet S2 is conveyed becomes slightly higher than the speed at which the lowermost sheet S1 is conveyed, the front end portion of the immediately upper sheet S2 rides on the rear end portion of the lowermost sheet S1. It becomes a shape, and it will be bitten together in the 2nd delivery outlet n2, and a trouble will generate | occur | produce. Such a trouble is unavoidable in terms of configuration in the conventional sheet feeding apparatus in which the first feeding port n1 and the second feeding port n2 are separated from each other.

In addition, although the patent document regarding the improvement of the delivery outlet of the sheet supply apparatus which supplies the above thick papers one by one was not seen, the following patent documents 1 and 2 are listed for reference. The following patent document 1 was filed with a priority claim from the United States, and the following patent document 2 is a US patent and has not been filed in Japan. In both cases, the applicants are the same, and the invention of Patent Document 1 below is positioned as an improvement of the invention of Patent Document 2 below.

The following Patent Documents 1 and 2 are mainly intended to continuously supply a sheet in a so-called “kake shape”, that is, in a partially overlapped state, in a state where the sheet is completely separated. The purpose itself is different from the purpose of the present invention of supplying one sheet at a time. However, since there is a common point in that the technical contents regarding the shape of the delivery port are described, they are taken up.

From the viewpoint of the order of technical contents, the contents of Patent Document 2 below will be briefly described. The following Patent Document 2 discloses a roll (roll 51) in which two types of eccentric cylindrical bodies (outer peripheral surface 56, rings 62) are combined together, a feed belt (belts 30), and a lower drive roller (rollers 33). A rear exit surface (nip 52) is formed between them, and the rear surface of the cylindrical body shifted rearward engages sheets other than the lowest sheet, and only the lowermost sheet is fed out from the delivery opening. It is what I did. Accordingly, there is only one outlet, and the degree of opening can be adjusted by operating the handle (controlknob 84). Of the two members forming the roll (roll 51), the outer peripheral surface 56 is made of a material having a friction coefficient larger than that of the rings 62.

However, the invention of the following Patent Document 2 has the following three problems. First, the first problem is that it is very difficult to adjust the opening degree of the feed outlet. The adjustment operation itself can be performed by rotating the handle (control knob 84), but it is not difficult, but unless the opening of the feeding opening is determined so that the passing sheet does not touch the ring (rings62) of the roll (roll 51) (Refer to the 59th line to the 62nd line in the sixth column of Patent Document 2 below).

That is, in the invention of the following Patent Document 2, since the two portions (outer peripheral surface 56, rings 62) forming the roll (roll 51) are not rotated and are in a fixed state, the lowest position is at the outlet. This is because if the surface of the sheet comes into contact with the rings (rings 62), the sheet is caught there and hinders smooth supply.

  However, in actual work sites, the thickness of the sheet itself is slightly different, or it is a material that is easily fuzzy, or even has a broken line. Even if it can be decided at the last place where it does not contact the ring (rings 62) of (roll 51), in the above sheet, the thick part or the part of the broken line is immediately caught by the feeding outlet and the operation stops. turn into. However, if the outlet is opened too much, the trouble that two sheets are supplied simultaneously increases. Therefore, the invention of the following Patent Document 2 has a problem that it is very difficult to adjust the opening degree of the feeding outlet, and that the opening degree is often re-adjusted during work.

  Next, the second problem is that in the invention of Patent Document 2 below, the ring (rings 62) is damaged quickly, and the damaged part is replaced by rotating the ring (rings 62) with respect to the roll (roll 51). Maintenance is often required, and the entire ring (rings62) needs to be replaced frequently, which is cumbersome and expensive.

That is, the lowermost sheet to be supplied does not contact the ring (rings 62), so that part of the ring (rings 62) is not damaged, but the sheet just above contacts the ring (rings 62) slightly behind the outlet. Can be stopped. Therefore, the portion of the ring (rings 62) where the sheet immediately above contacts is always damaged, and the roll (roll 51) is disassembled to rotate the ring (rings 62) with respect to the roll (roll 51). Maintenance that shifts the frequency is frequently required. In addition, if it is impossible to restore the function by such maintenance, that is, when the damage has spread over the entire ring (rings 62), it is necessary to replace the entire ring (rings 62) (see Patent Document 2 below). (Refer to the 32nd line-the 40th line of the 7th column). Since the number of the rings (rings 62) is large as shown in FIG. 6 of Patent Document 2 below, maintenance for changing the damaged position by rotation and replacement of the entire structure require labor.

Next, as a third problem, in the invention of the following Patent Document 2, a plurality of eccentric grooves are cut in the body of the roll (roll 51), and a ring (rings 62) is fitted into the roll. (Roll 51) is formed, but the cost for cutting the eccentric groove in the roll is high, and the roll itself is expensive. As described in the "Background of the" section.

The invention of the following Patent Document 2 has the above two problems, but the invention of the following Patent Document 1 was made to solve the third problem. That is, in Patent Document 1 below, the annular groove (57) is concentric with the roll body without cutting the eccentric groove in the roll, and the lower outer peripheral surface of the roll is partially cut away and fitted into the annular groove (57). It is said that the elastic ring (62) is exposed only in that portion, and the same action as in Patent Document 2 below can be obtained.

Certainly, by making the annular groove (57) concentric with the roll body, the manufacturing cost of the roll is reduced, and the third problem among the above three problems is solved. However, the first and second problems are not solved at all in the invention of Patent Document 1 below. That is, it is difficult to adjust the opening degree of the feeding outlet to the extent that it does not touch the passing sheet, and even if it can, it is difficult to smoothly feed various sheets one by one, and immediately above These two problems remain unresolved because only a certain part of the ring that stops the seat is damaged, which makes maintenance and replacement difficult.
Japanese National Patent Publication No. 11-504308 US Pat. No. 4,991,831

From the above, the problems to be solved by the present invention are set as follows.
<Problem 1>
Developed a sheet supply device that can reliably feed out a sheet as thick as a cardboard used for a book cover one by one.
<Problem 2>
At that time, the problem of the difficulty of adjusting the first feeding outlet and the troubles resulting from it, that is, the trouble that the two sheets are simultaneously supplied or the supply is stopped, is solved, especially in the conventional sheet supply apparatus. By doing so, we aim to achieve Problem 1.
<Problem 3>
At the same time, the configuration is made taking into account the convenience of maintenance and replacement of damaged parts.

The present invention has been made to solve the above-described problems, and provides the following solution means.
<Solution 1>
A frame part that is a framework of the entire configuration of the apparatus, a storage part that stores a plurality of stacked sheets, a support part that supports rear end parts of the plurality of stacked sheets, and a storage part that is stacked on the storage part A conveying unit that conveys the lowest sheet of the plurality of sheets, a feeding unit having a feeding roller that feeds only the lowest sheet of the plurality of stacked sheets from the feeding port, and the fed sheet In the feeding section of the sheet feeding apparatus, which includes a discharge section that discharges the sheet to the outside of the apparatus, a power section that supplies power to the conveyance section and the discharge section, and a control section that controls the power section, The feeding roller located at the upper part is composed of a rotating part and a fixed part, and when the upper surface of the ascending part of the feeding belt of the conveying part is a reference plane and the direction in which the sheet is fed is forward, the rear part of the fixing part is Behind the rear of the rotating part That is, it protrudes in the direction of the storage portion, and the position adjustment of the rotating portion and the fixed portion can be performed simultaneously by a single position adjusting means, and only the lowermost sheet has the upper surface of the upper portion of the feeding belt and the feeding roller. A feeding roller of a sheet feeding device, wherein the feeding roller is configured to be sandwiched between rotating portions and fed from a feeding outlet, and a sheet immediately above is locked to a fixed portion.
<Solution 2>
The rotating portion of the feeding roller is a roller, and the outer portion of the roller is pivotally mounted with a ball bearing mechanism with respect to the pivot fixed to the position adjusting means, and the fixed portion of the feeding roller rotates. It is fixed to the position adjusting means by a cylindrical body or disk body having the same diameter as the portion, and the center of the cylindrical body or disk body of the fixed portion is rearward from the center of the roller that is the rotating portion, that is, in the direction of the sheet storage portion. The feeding roller of the sheet feeding apparatus according to Solution 1, wherein a configuration is realized in which the rear portion of the fixed portion protrudes rearward from the rear portion of the rotating portion, that is, toward the storage portion by being eccentric.
<Solution 3>
It has a central axis to which a cylindrical body or a disk body which is a fixed part of the feeding roller is fixed, and the central axis is fixed integrally with a pivot of the roller which is a rotating part. The solution means 2 is characterized in that a configuration in which the rear portion of the fixed portion protrudes rearward from the rear portion of the rotating portion, that is, toward the storage portion is realized by the center of the central axis being eccentric. Feeding roller of the sheet feeding apparatus.
<Solution 4>
The lower part of the position adjusting means is configured as a roller holder that fixes the pivot of the rotating part of the feeding roller, and the pivot is fixed to the holder of the roller holder by releasing the pivot fixing means that fixes the pivot of the rotating part to the holder part of the roller holder. It is possible to rotate freely within the holder part, thereby enabling the central axis of the cylindrical body or disk body, which is a fixed part, to rotate with respect to the pivot axis of the roller, and fixing the pivot axis of the roller again at an arbitrary position. 4. A feeding roller of a sheet feeding apparatus according to claim 3, further comprising a pivot fixing means capable of fixing the relative positional relationship between the fixed portion and the rotating portion.

  According to the invention of Solution 1 of the present invention, the feeding roller located at the upper part of the feeding port of the feeding unit is composed of a rotating part and a fixed part, and the upper surface of the ascending part of the feeding belt of the conveying part is used as a reference plane. When the sheet feeding direction is the front, the rear portion of the fixed portion protrudes rearward from the rear portion of the rotating portion, that is, toward the storage portion, and the position adjustment of the rotating portion and the fixed portion is performed by a single position adjusting means. Only the lowermost sheet is sandwiched between the upper surface of the ascending portion of the feeding belt and the rotating portion of the feeding roller and fed from the feeding outlet, and the sheet immediately above is locked to the fixed portion. Therefore, all the sheets other than the lowermost sheet can be adjusted so as to be locked by the fixed portion protruding rearward.

That is, in the conventional sheet feeding apparatus, since the adjustment of the opening degree of the feeding outlet, which is divided into two places and needs to be adjusted separately in the conventional sheet feeding apparatus, can be performed at one place at the same time, this is particularly remarkable in the conventional sheet feeding apparatus. The difficulty in adjusting the first delivery port is solved, and at the same time, troubles that occur frequently in the conventional sheet feeding apparatus are reduced.

This point will be described in more detail as follows. That is, in the invention of Solution 1 of the present invention, each sheet positioned under the sheet layer and above the lowermost sheet is provided with a smooth feeding operation of the lowermost sheet on the rotating portion of the feeding roller. Is held by the fixed portion of the feeding roller. In addition, since the vertical position adjustment of the rotating part and the fixed part can be performed simultaneously by a single position adjusting means, if the relative positioning of the rotating part and the fixed part is performed first, Even if the thickness changes somewhat, smooth feeding can be easily ensured by simultaneously adjusting the rotating portion and the fixed portion by the single position adjusting means. That is, it is possible to meet the problem of reliably feeding the sheets one by one with a simple adjustment method.

Next, according to the solution 2 of the present invention, the rotating portion of the feeding roller is a roller, and the outer portion of the roller is rotated by a ball bearing mechanism with respect to the pivot fixed to the position adjusting means. Since the lowermost sheet is pivoted freely, the lowermost sheet is reliably caught between the feed belt and the roller, and only the lowermost sheet is fed out more smoothly and reliably.

Further, the fixed portion of the feeding roller is fixed to the position adjusting means by a cylindrical body or a disk body having substantially the same diameter as the rotating portion, and the center of the cylindrical portion or the disk body of the fixed portion is a rotating portion. Since the rear part of the fixed part protrudes rearwardly, that is, toward the storage part from the rear part of the rotating part by being eccentric from the center, that is, toward the sheet storage part, the bottom part of the sheet layer is the uppermost part. Each sheet positioned higher than the lower sheet is locked along the arcuate shape of the rear portion of the fixed portion.

Therefore, as seen in the conventional sheet feeding apparatus, the distance between the first feeding port and the second feeding port is not increased, and the rear end portion of the lowermost sheet has been fed out from the feeding port. At the moment, the sheet immediately above is caught by the roller which is the rotating part. In other words, unlike the conventional sheet feeding apparatus, there is a difference in the conveyance speed between the lowermost sheet and the uppermost sheet, so that the two sheets cannot be caught by the roller together, and the trouble caused by this is that It does not occur at all.

Next, according to the invention of Solution 3 of the present invention, it has a central axis to which a cylindrical body or a disk body which is a fixed part of the feeding roller is fixed, and the central axis is a pivotal axis of the roller which is a rotating part. A structure in which the rear portion of the fixed portion is protruded rearward from the rear portion of the rotating portion, that is, toward the storage portion by being fixed as a single unit and having the center of the central axis of the roller and the center axis of the fixed portion being eccentric. Therefore, when a fixed portion of the outer periphery of the cylindrical body or disk body that is the fixed part, that is, the rear part of the cylindrical body or disk body is damaged, the cylindrical body or disk that is the fixed part of the feeding roller By simply unfixing the body from the central axis, rotating it around 180 °, and fixing it again, the undamaged outer peripheral surface can be directed to the rear, and maintenance is easy.

Actually, the central axis is made of metal, the cylindrical body or the disk body is an elastic body, and the central hole drilled in the center of the elastic body is slightly smaller in diameter than the central axis, so that the central axis is cylindrical. The fixed state of both can be obtained simply by fitting the body or disk. Release of the fixed state is very simple because it is only necessary to remove the cylindrical body or the disk from the central axis. In this way, maintenance by rotating the cylindrical body or disk body can be performed easily, and replacement of the cylindrical body or disk body is easy. If the roller that is the rotating part is positioned at the center of the feeding roller and the cylindrical body or disk that is the fixed part is positioned at both ends, maintenance and replacement can be performed in a short time without disassembling the feeding part. Become.

According to the invention of the solution means 4 of the present invention, the lower part of the position adjusting means is configured as a roller holder that fixes the pivot of the rotating part of the feeding roller, and the pivot that fixes the pivot of the rotating part to the holder part of the roller holder By releasing the fixing means, the pivot can be freely rotated in the holder portion of the roller holder, and thereby the central axis of the cylindrical body or the disk body which is the fixed portion can be rotated with respect to the pivot of the roller, In addition, since it has the pivot fixing means that can fix the relative positional relationship between the fixed portion and the rotating portion by fixing the pivot shaft of the roller again at an arbitrary position, the central axis of the cylindrical body or the disk body that is the fixed portion is the rotating portion. It can move relative to the pivot axis.

This configuration brings about remarkable effects as described below. That is, the center of the fixed part is decentered rearward with respect to the center of the rotating part. However, if the roller of the rotating part and the cylindrical body or disk of the fixed part have the same diameter, the center of the fixed part is the rotating part. It is necessary to position it slightly above the center. That is, this structure is necessary because the lowermost sheet is caught by the roller of the rotating part without contacting the fixed part at all, and the sheet directly above is locked to the fixed part. However, the upper and lower directions here are all based on the reference plane, and the direction perpendicular to the reference plane is the vertical direction.

How much the center of the fixed part is positioned with respect to the center of the rotating part is determined by the thickness of the sheet to be fed, but usually the thickness of the sheet to be handled does not change significantly. If the average thickness of the sheet is determined as the initial value, sheets having slightly different thicknesses can be handled without causing trouble in most cases. In other words, if the relative position of the top and bottom of the center of the fixed part and the center of the rotating part is determined by the average sheet thickness handled by the device, it is possible to handle various thickness sheets with almost no change. It is.

However, when handling an extremely thick sheet or an extremely thin sheet with respect to the average sheet handled by the device, the center of the fixed part and the center of the rotating part are also changed depending on the thickness of the sheet to be handled. The relative position of must be changed. In such a case, according to the invention of the solution means 4 of the present invention, the fixing means for fixing the pivot shaft to the roller holder is released, and the pivot portion is simply rotated within the roller holder so that the center of the fixed portion is set. A change in the relative position above and below the center of the rotating part can be realized, which is very convenient.

As an example of the fixing means, there is a method in which a screw hole is formed in the holder portion of the roller holder, a bolt is screwed, and the pivot is pressed at the tip portion of the bolt to be fixed in the holder portion of the roller holder. Can be taken. When this method is adopted, the pivot can be rotated with one driver without disassembling the feeding portion, and it can be fixed again at an appropriate position with one driver. Thus, according to the invention of Solution 4 of the present invention, a sheet having a thickness extremely deviated from the average thickness (for example, a sheet having a thickness of twice or more than half of the average thickness) can be obtained. It is possible to smoothly feed out one sheet at a time with simple adjustment.

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

  FIG. 1 is an explanatory view of the operation of the sheet feeding apparatus having the feeding roller according to the first exemplary embodiment when viewed from the right side, with a part cut away. FIG. 2 is a right side view in which a part of the sheet feeding apparatus having the feeding roller of the first embodiment is cut out, and FIG. 3 is a front view of a main part in which a part of the sheet feeding apparatus having the feeding roller in the first embodiment is cut out. is there. However, FIG. 3 is a front view as seen from the X direction of FIG. 2, that is, a direction parallel to the reference plane SP, and a part of the frame portion F that should be originally seen to show only the main part. And the display of the bearing part Ss are omitted. The plane formed by the upper surface b1 of the ascending portion of the feeding belt b of the conveyance unit C is referred to as a reference plane SP, and the point where the discharge unit D is located in front is the conventional sheet supply device Sf (FIG. 23). To FIG. 27).

  4 is a plan view of a sheet feeding apparatus having a feeding roller according to the first embodiment, FIG. 5 is a right side view of a main part of the sheet feeding apparatus having a feeding roller according to the first embodiment, and FIG. FIG. 1 is an external perspective view in which a storage unit, a feeding unit, and an upper part of a discharge unit are removed from a sheet supply apparatus having one feeding roller, and a frame body unit, a support unit, a conveyance unit, a lower unit of a discharge unit, a power unit, and a control unit are displayed. It is. FIG. 7 is a perspective view of the overall appearance of the sheet feeding apparatus having the feeding roller according to the first embodiment.

  8 is an external perspective view of the feeding portion of the sheet feeding apparatus having the feeding roller according to the first embodiment, FIGS. 9a and 9b are external perspective views of a locking plate that defines the storage portion and the feeding portion, and FIG. 10 is a drawing of the feeding portion. FIG. 11 is an assembly view of the sliding mechanism of the position adjusting means of the feeding portion, FIG. 12 is an assembly view of the main portion of the position adjusting means of the feeding portion, and FIGS. 13a and 13b are the feeding of the feeding portion. 14a is an external perspective view of the central axis of the disc body that is a rotating shaft and a fixed portion of the roller that is a rotating portion of the feeding roller, and FIG. 14b is a plan view in which a part of the feeding roller is cut away, FIG. 15-22 is explanatory drawing explaining the effect | action of the feeding roller of Example 1. FIG.

<Configuration of Example 1>
First, the overall configuration of the sheet feeding apparatus SF having the feeding roller according to the first embodiment will be described. The sheet feeding device SF having the feeding roller of the first embodiment is substantially different in the configuration of the feeding portion SO, except for a part of the configuration of the frame body portion F and a part of the configuration of the storage portion SH. The configuration is the same as that of the conventional sheet supply device Sf shown in FIG. Accordingly, portions having the same configuration will be described with the same reference numerals as those of the conventional sheet feeding device Sf. Further, portions overlapping with the description of the conventional sheet supply apparatus Sf will be omitted as appropriate.

  As shown in FIGS. 2, 4, 6, and 7, the sheet feeding device SF having the feeding roller 1 according to the first embodiment includes a frame body portion F that serves as a framework of the overall configuration of the device, a plurality of sheets S, .. (See FIG. 2) are stored in a storage portion SH, a plurality of stacked sheets S, S,... A conveying unit C that conveys the lowest sheet S1 of the plurality of stacked sheets S, S,... And only the lowest sheet S1 of the plurality of stacked sheets S, S,. A feeding part SO with position adjusting means 2 for feeding from the feeding port N, a discharging part D for discharging the fed sheet S1 out of the apparatus, and a power part P for supplying power to the conveying part C and the discharging part D And a control unit L that controls the power unit P.

  The frame body portion F of the sheet feeding device SF is configured such that the left side plate F1, the right side plate F2, the lid plate F3, and the rear plate F4 are fixed to each other, and both the left side plate F1 and the right side plate F2 are from the middle part to the front part. Is projected upward, the shaft sx1 is located above the middle portion of the left side plate F1, the shaft sx2 is located below, the shaft sx3 is located above the middle portion of the right side plate F2, and the shaft sx4 is located below. A support plate sb is provided and fixed above the front portion. Further, the cover plate F3 is installed and fixed to the rear upper ends of the left side plate F1 and the right side plate F2 to cover the entire rear part of the sheet feeding device SF, and the rear plate F4 covers the entire back surface of the sheet feeding device SF. The rear panel F4 is provided with operation switches sw and a power cord co (see FIG. 4). Also, swb in FIG. 4 is a switch box.

  The bottom sides of the left side plate F1 and the right side plate F2 are installed in parallel to the horizontal plane GL, but the upper rear portion is formed so as to be included in the reference plane SP (see FIG. 2), so the left side plate F1 and the right side plate The reference plane SP also includes the substantially upper surface of the cover plate F3 provided across the rear upper end of F2. Furthermore, as described above, the upper surface b1 of the ascending portion of the feed belt b of the transport unit C is configured to coincide with the reference plane SP (see FIG. 1). That is, the rear plate upper ends of the left side plate F1 and the right side plate F2, the substantially upper surface of the cover plate F3, and the upper surface b1 of the ascending portion of the feed belt b of the transport unit C all coincide with the reference plane SP. In this case, the inclination angle, that is, the angle α formed by the horizontal plane GL and the reference plane SP is set to 10 ° in the sheet feeding apparatus SF.

  The conveyance unit C has the same configuration as the conveyance unit C of the conventional sheet supply apparatus Sf. That is, a plurality of shafts cx1 and cx2 rotatably provided on the left side plate F1 and the right side plate F2 are respectively mounted on the large feed rollers R and R and the shafts cx3 and cx4 via the small feed rollers r and r, respectively. Are aligned in the lateral direction of the apparatus, and the upper surfaces b1, b1,... (See FIG. 5) of the ascending portion of the feed belts b, b,. It is arranged on the same reference plane SP as the lid plate F3. As shown in FIG. 2, the small feed rollers r, r are arranged so that the ascending belts of the feed belts b, b,. The shafts cx1 to cx4 are rotatably provided to the left side plate F1 and the right side plate F2, respectively. In the sheet supply apparatus SF, the number of the feeding belts b, b,... Is 9, but it is of course possible to increase or decrease appropriately.

  A discharge unit D is provided at the front portion of the sheet supply device SF, and the configuration of the discharge unit D is the same as the discharge unit D of the conventional sheet supply device Sf. That is, the discharge portion D is provided above the discharge belt db and the discharge belt db mounted on the shafts dx1 and dx3 rotatably provided on the left plate F1 and the right plate F2 via the discharge rollers dr and dr. It is comprised from the discharged | emitted presser foot part Dp.

ds, ds,... is a plurality of discharge support plates that are appropriately arranged on the extensions of the shafts dx1, dx3. The shafts dx1, dx3 are rotatably inserted into the discharge support plates ds, ds,. A shaft dx2 inserted and fixed to the discharge support plates ds, ds,... is provided between dx1 and dx3, and the shaft dx2 is also fixedly provided to the left side plate F1 and the right side plate F. Further, the upper surface db1 of the upper part of the discharge belt db and the upper surfaces ds1, ds1, ... of the discharge support plates ds, ds, ... are the upper surfaces b1, b1 of the feed belts b, b, ... of the conveying section C. ,... Are arranged on the same reference plane SP. In the sheet supply apparatus SF, there are four discharge support plates ds, ds,...

  The discharge presser part Dp is composed of three presser rollers dpr, dpr and dpr suspended through the height adjusting mechanism hc at the center of the support plate sb provided and fixed to the left side plate F1 and the right side plate F2. The rollers dpr, dpr, dpr are arranged so as to be located immediately above the upper surface db1 of the upper portion of the discharge belt db. The three pressing rollers dpr, dpr, dpr are rotatably mounted on the frame dfr of the discharge pressing portion Dp, from the lower end dra of the pressing rollers dpr, dpr, dpr to the upper surface db1 of the upper portion of the discharge belt db. The distance D3 (see FIG. 1) can be finely adjusted by the handle dh. Since the mechanism regarding this fine adjustment is the same as that of the conventional sheet feeding apparatus Sf, the description thereof is omitted.

  Next, the configuration of the storage unit SH will be described. As described above, the upper part of the left side plate F1 of the sheet feeding apparatus SF has an upper shaft sx1, the lower part has a shaft sx2, and the upper part of the right side plate F2 has an upper part sx3. The shaft sx4 is fixedly attached to the left side plate F1 and the right side plate F2, respectively, and a sheet pressing plate SH1 is mounted near the left end of the shaft sx1 and sx2 via the position adjusting mechanism HC1, and the shaft sx3 and sx4 A sheet pressing plate SH2 is mounted in the vicinity of the right end of the sheet via a position adjusting mechanism HC2 (see FIGS. 4 and 7). The sheet pressing plates SH1 and SH2 are configured to prevent a plurality of sheets S, S,... Deposited in the storage unit SH from moving in the lateral direction. The lower ends of the sheet pressing plates SH1 and SH2 are set at positions appropriately separated from the reference plane SP. The distance D4 (see FIG. 1) is 20% to the diameter of the rollers 111 and 112 of the feeding portion SO. About 40%. This distance D4 is fixed after the sheet supply apparatus SF is once assembled, and is not finely adjusted.

  The sheet pressing plates SH1 and SH2 are moved to the left and right positions by operating the handles hn1 and hn2 to slide the position adjusting mechanism HC1 along the axes sx1 and sx2 and the position adjusting mechanism HC2 along the axes sx3 and sx4. Is adjustable. That is, if the handle hn1 is loosened, a slight gap is generated between the two members HC11 and HC12 forming the position adjusting mechanism HC1, and the entire position adjusting mechanism HC1 can be slid along the axes sx1 and sx2. If the handle hn2 is loosened, a slight gap is generated between the two members HC21 and HC22 forming the position adjusting mechanism HC2, and the entire position adjusting mechanism HC2 can be slid along the axes sx3 and sx4. . The adjustment mechanisms of the position adjustment mechanisms HC1 and HC2 have a structure that is very similar to that part of the conventional sheet feeding device Sf, and are well-known techniques. The positions of the sheet pressing plates SH1 and SH2 are adjusted according to the horizontal width of the stored sheet S so that the distance between the sheet pressing plates SH1 and SH2 is substantially the same as the horizontal width of the stored sheet S. .

  The support portion Ss is placed on the upper surface of the lid plate F3 of the frame body portion F, and has a configuration in which the support plates t, t,. Thus, the whole position can be slid back and forth on the upper surface of the cover plate F3 by the position adjusting mechanism ssc. The support portion Ss has the same structure as that portion of the conventional sheet feeding device Sf, and the mechanism of the position adjustment mechanism ssc is a known technique and is not related to the main part of the present invention, so it will not be described in detail. By loosening, the entire support portion Ss can slide back and forth, and if the handle hb is tightened, the entire support portion Ss is fixed at that position. Further, the operation of the conventional sheet feeding device Sf is also performed in terms of an operation surface in which the lower end of the sheet S, S,... Is the same.

  The driving unit P includes a motor m and a driving shaft mx stored in the rear right end portion of the sheet feeding device SF, and a driving roller mr fixed to the driving shaft mx. A driving belt mb is wound around the driving roller mr. Yes. The driving belt mb is clamped and pinched between the pinch rollers pr1 and pr2 at two positions in front of the driving roller mr, and is fixed to the rollers tR1 and tR2 and the shafts cx3 and cx4 fixed to the axes cx1 and cx2 of the conveying unit C. It is wound around the rollers tr1 and tr2. Accordingly, the driving force generated by the motor m is transmitted to the transport unit C through the driving belt mb, and the shafts cx1, cx2, cx3, and cx4 are rotated in the same direction as the driving shaft mx of the motor m.

  A roller tR3 is fixed to the shaft cx2 of the transport unit C adjacent to the roller tR2 in the vicinity of the right end, and a roller tr3 having a slightly smaller diameter than the roller tR3 is fixed to the vicinity of the right end of the shaft dx1 of the discharge unit D. A transmission belt tm1 is wound around the roller tr3. Further, on the shaft cx2, a roller tR4 having the same diameter as the roller tR3 is fixed near the left end, and a roller tr4 having the same diameter as the roller tr3 is fixed near the left end of the shaft dx1 of the discharge portion D. A transmission belt tm2 is wound around tr4. Thereby, the rotation of the shaft cx2 is transmitted to the shaft dx1, but since the roller tr3 has a slightly smaller diameter than the roller tR3 and the roller tr4 has a slightly smaller diameter than the roller tR4, the rotational speed of the shaft dx1 is the rotation of the shaft cx2. Slightly faster than speed.

  A control unit L for controlling the movement of the motor m is stored in the lower rear portion of the sheet feeding device SF. Since the control unit L is a known technique and is not related to the gist of the present invention, it will not be described in detail, but it controls the start and stop of the motor m, controls the rotational speed of the motor m, and controls the motor m. Performs general control such as intermittent operation like a stepping motor. 2, 4, 6, and 7, all codes such as codes that connect the control unit L and the motor m are omitted.

  As shown in FIGS. 3 and 8, the feeding portion SO is located at the feeding roller 1 and the feeding roller 1 that form the feeding outlet N together with the upper surfaces b1, b1,... Of the feeding belts b, b,. The position adjusting means 2 for adjusting the position, the storage portion SH, and the locking plate 3 that defines the feeding portion SO. Since the locking plate 3 has its left end fixed to the shafts sx1 and sx2 and its right end fixed to the shafts sx3 and sx4, the locking plate 3 is eventually left and right plates F1 and F2 via the shafts sx1 to sx4. It will be fixed to. Further, the position adjusting means 2 is fixed to the locking plate 3, and the feeding roller 1 is fixed to a roller holder 27 below the position adjusting means 2.

  As shown in FIGS. 9a and 9b, the locking plate 3 is formed by bending and cutting a plate-like body, and has a substantially rectangular rear plate 31 partially bent and cut, and the left end portion of the rear plate 31. A left side plate 32 formed by bending forward at a right angle and a right side plate 33 formed by bending the right end portion of the rear plate 31 forward at a right angle are integrally formed.

  The lower end portion of the main body 31a of the rear plate 31 is notched in a bilaterally symmetrical manner at two locations to form notches 31b and 31c. The notches 31b and 31c are configured to project the rear portion of the fixed portion 12 of the feeding roller 1 described later, but the rotating portion 11 also projects slightly rearward (see FIG. 1). Widely provided.

The central upper end of the main body 31a is bent forward at a right angle to form a support plate 31d, and a circular hole 31e through which an adjustment shaft 21 of the position adjusting means 2 (described later) is inserted is formed in the approximate center of the support plate 31d. Yes. Further, a circular hole 31f, 31g for screwing a sliding mechanism 28 of the position adjusting means 2 described later is screwed to the left end of the main body 31, and a slide of the position adjusting means 2 described later is also connected to the right end of the main body 31a. Circular holes 31h and 31i for screwing the moving mechanism 29 are formed, respectively. The left side plate 32 has a circular hole 32a for fixing the right end portion of the shaft sx1 and a circular hole 32b for screwing the right end portion of the shaft sx2, and the right side plate 33 has a left end portion of the shaft sx3. And a circular hole 33b for screwing the left end portion of the shaft sx4.

  As shown in FIGS. 3, 10, and 12, the position adjusting means 2 includes an adjustment shaft 21 having a screw thread in the lower half, a handle 22 fixed to the top of the adjustment shaft 21, and an upper portion of the adjustment shaft 21. As shown in FIG. 3, the nut 23 is fixed to the support plate 31d of the locking plate 3, the nut 24 is screwed to the upper end of the thread of the adjustment shaft 21, and the lower surface of the support plate 31d. A coil spring 25 wound around the adjustment shaft 21 in a compressed state between the nut 24 and the nut 24, a connection tool 26 into which the lower end of the adjustment shaft 21 is screwed, and a roller holder 27 screwed into the lower end of the connection tool 26. The sliding mechanism 28 is screwed to the left end of the roller holder 27, and the sliding mechanism 29 is screwed to the right end of the roller holder 27.

  As shown in FIG. 12, the connector 26 includes an oval main body 261, an upper cylindrical portion 262 integrally projectingly fixed to the upper surface of the main body 261, and a lower cylindrical portion integrally projectingly fixed to the lower surface of the main body 261. 263. A screw hole 262a into which the lower end portion of the adjustment shaft 21 is screwed is formed on the upper surface of the upper tube portion 262, and a circular hole 263a is formed on the lower surface of the lower tube portion 263.

The circular hole 263a communicates with the screw hole 262a, and is provided with a slightly larger diameter than the screw hole 262a so that the lower end portion of the adjustment shaft 21 can be screwed further downward even after passing through the screw hole 262a. Another role of the circular hole 263a is a configuration provided for weight reduction. Further, a screw hole 261a is formed at the left end of the main body 261, and a screw hole 261b is formed through the right end. The bolts 261c and 261d are inserted into the roller holder 27 by screwing and inserting the bolts 261c and 261d. This is a configuration for screwing.

As shown in FIG. 12, the roller holder 27 has a vertical cylindrical connecting portion 272 projecting and fixed integrally with the receiving member 271 at the center of the lower surface of the horizontally long oval receiving member 271. A horizontal cylindrical holder portion 273 is integrally fixed to the connecting portion 272.

The receiver 271 has a shallow circular recess 271a in which the lower cylinder portion 263 of the connector 26 is fitted in the center of the upper surface, and a lower end portion of a shaft 28b of the sliding mechanism 28 described later is fitted in the left end portion of the upper surface. A shallow circular concave portion 271b to be worn is formed, and a shallow circular concave portion 271c to which a lower end portion of a shaft 29b of the sliding mechanism 29 described later is fitted is formed at the right end portion of the upper surface. Further, a screw hole 271d is formed at the left end of the lower surface, and the screw hole 271d penetrates to the center of the recess 271b. Further, a screw hole 271e is formed at the right end of the lower surface, and the screw hole 271e penetrates to the center of the recess 271c. Further, a screw hole 271f into which the bolt 261c is screwed is formed on the left side of the concave portion 271a at the center of the upper surface, and a screw hole 271g into which the bolt 261d is screwed on the right side.

The holder portion 273 has a circular hole 274, and pivots 13 a and 13 b of rollers 111 and 112 of the rotating portion 11 of the feeding roller 1 described later are fitted into the circular hole 274. A screw hole 273b into which a screw 273d is screwed into the front left end of the horizontal cylindrical main body 273a, and a screw hole 273c into which the screw 273e is screwed into the right front end are formed.

As shown in FIGS. 3, 8, and 11, the sliding mechanism 28 includes a substantially rectangular parallelepiped sliding body 28 a having a slide bearing 28 d, 28 e installed in the center, and a slide bearing 28 d provided in the sliding body 28 a. It is comprised from the axis | shaft 28b penetrated in 28e. As shown in FIGS. 3, 8, and 11, the sliding mechanism 29 includes a substantially rectangular parallelepiped sliding body 29a having slide bearings 29d and 29e in the center, and a sliding bearing built in the sliding body 29a. It is comprised from the axis | shaft 29b penetrated in 29d and 29e. A screw hole 28c into which the tip of a bolt 271h is screwed into the lower end of the shaft 28b as shown in FIGS. 11 and 12, and a tip of the bolt 271i as shown in FIGS. Screw holes 29c into which are inserted are respectively drilled.

As shown in FIG. 12, the sliding mechanism 28 has a lower end portion of a shaft 28b fitted into a recess 271b at the left end of the receiving member 271 of the roller holder 27, and is screwed to the receiving member 271 with a bolt 271h. As shown in FIG. 11, the bolt 3Ba is screwed into the screw hole 28f drilled in the back surface of the sliding body 28a and the bolt 3Bb is screwed into the screw hole 28g. The sliding body 28 a is fixed to the main body 31 of the locking plate 3. The sliding body 28a and the shaft 28b can slide smoothly with each other by the action of the slide bearings 28d and 28e.

As shown in FIG. 12, the sliding mechanism 29 has a lower end portion of the shaft 29b fitted into a concave portion 271c at the right end of the receiving member 271 of the roller holder 27, and is screwed to the receiving member 271 with a bolt 271i. 29b is fixed to the roller holder 27, and as shown in FIG. 11, the bolt 3Bc is screwed into the screw hole 29f drilled in the back surface of the sliding body 29a, and the bolt 3Bd is screwed into the screw hole 29g. The sliding body 29 a is fixed to the main body 31 of the locking plate 3. The sliding body 29a and the shaft 29b can slide smoothly with each other by the action of the slide bearings 29d and 29e.

As shown in FIGS. 3, 10, 13 a, 13 b, 14 a, and 14 b, the feeding roller 1 is a fixed portion that includes a roller 111, a rotating portion 11 including a roller 112, a disk body 12 a, and a disk body 12 b. It is composed of part 12.
13a is the pivot of the roller 111, 13b is the pivot of the roller 112, 14a is the central axis of the disc body 12a, and 14b is the central axis of the disc body 12b.

The roller 111 has a ball bearing 111a around a pivot 13a made of a hard material such as metal or hard resin, and further includes a hard ring 111b made of a hard material such as metal or hard resin and an elastic body as an outer portion of the ball bearing 111a. The elastic ring 111c to be formed is provided around. Therefore, although the pivot 13a is fixed to the holder portion 273 of the roller holder 27, the hard ring 111b and the elastic ring 111c which are outer portions are configured to be rotatable with respect to the pivot 13a via the ball bearing 111a. . The hard ring 111b and the elastic ring 111c are fixed.

The roller 112 includes a ball bearing 112a around a pivot 13b made of a hard material such as metal or hard resin, and further includes a hard ring 112b made of a hard material such as metal or hard resin and an elastic body as an outer portion of the ball bearing 112a. The elastic ring 112c to be formed is provided around. Therefore, although the pivot 13b is fixed to the holder portion 273 of the roller holder 27, the hard ring 112b and the elastic ring 112c, which are outer portions, are configured to be rotatable with respect to the pivot 13b via the ball bearing 112a. . The hard ring 112b and the elastic ring 112c are fixed.

The disc body 12a is made of an elastic body that is harder than the elastic body of the elastic rings 111c and 112c of the rotating portion 11, and is fitted and fixed to a central shaft 14a made of a hard material such as metal or hard resin. The disc body 12b is also composed of an elastic body having the same quality as the disc body 12a, and is fitted and fixed to a central shaft 14b made of a hard material such as metal or hard resin. The rollers 111 and 112 and the disk bodies 12a and 12b are all configured to have the same diameter.

As shown in FIG. 14a, the pivot shaft 13a and the central shaft 14a are integrally formed via a pivot shaft 13a and a large-diameter disk 15a including a cross section of the central shaft 14a in a side view. Further, the pivot 13b and the central shaft 14b are integrally formed through a large-diameter disk 15b including a cross section of the pivot 13b and the central shaft 14b in a side view. The pivot shaft 13a and the pivot shaft 13b have the same diameter, the central shaft 14a and the central shaft 14b have the same diameter, and the disc 15a and the disc 15b have the same diameter.

As seen in FIG. 14a, pivot 13a and pivot 13b share a center line ω1. The center axes 14a and 14b share the center line ω2. As shown in FIG. 1, when the reference plane SP is a horizontal plane, the center line ω1 and the center line ω2 are decentered by a distance D5 rearward and a distance D6 upward relative to the centerline ω1. Β1 is an angle formed by a line segment ω3 connecting the center line ω1 and the center line ω2 with respect to a line segment sp passing through the center line ω1 and parallel to the reference plane SP.

The distance D5 is suitably in the range of 5 to 20% of the diameter φ (see FIG. 14b) of the rotating portion 11 (rollers 111 and 112) and the fixed portion 12 (disk bodies 12a and 12b). As will be described later, the pivot shaft 13a and the pivot shaft 13b can be rotated in the circular hole 274 of the holder portion 273 of the roller holder 27, and the distance D5 (see FIG. 1) is slightly increased by the rotation of the pivot shaft 13a and the pivot shaft 13b. Adjustment is possible. However, when the distance D5 is less than 5% of the diameter φ, depending on the thickness of the sheet S to be handled, the front end portion of the sheet S2 immediately above the lowest sheet S1 comes into contact with the rotating portion 11, and the two sheets are simultaneously The trouble of being bitten by the feeding port N is likely to occur. If the distance D5 exceeds 20% of the diameter φ, the distance D7 from the feeding port N to the front end portion of the immediately above sheet S2 that is locked to the fixed portion 12 is too wide. There is a greater risk that the front end portion of the immediately upper sheet S2 rides on the rear end portion of the lowermost sheet S1, and the configuration of the feeding roller 1 itself becomes unreasonable. In FIG. 1, the distance D5 is about 12% of the diameter φ.

It is desirable to adjust the distance D6 so that it slightly exceeds half of the thickness ds1 of one sheet S to be handled. The reason is that the distance D1 from the lower end 12s of the fixed portion 12 to the reference plane SP is the thickness of one sheet S by adjusting the distance D6 so that it slightly exceeds half the thickness ds1 of the sheet S. This is because the optimum value is slightly over 1.5 times ds1. The reason why the optimum value of the distance D1 is slightly larger than 1.5 times the thickness ds1 of one sheet S has been described previously, and the description thereof will be omitted. Further, the angle β1 is uniquely determined as an angle having the distance D5 / D6 as a tangent when the distances D5 and D6 are determined. In FIG. 1, the angle β1 is about 25 °.

Next, assembly of the entire feeding unit SO will be described. First, the feeding roller 1 is provided with a roller 111 around the pivot shaft 13a and the disc body 12a is fitted to the central shaft 14a, whereby the assembly of the left half is completed. Further, the assembly of the right half is completed by providing the roller 112 around the pivot shaft 13b and fitting the disc body 12b on the central shaft 14b.

Next, the pivot 13a is inserted into the circular hole 274 of the holder part 273 from the left end of the holder part 273 of the roller holder 27, the bolt 273d is screwed into the screw hole 273b (see FIG. 12), and the tip of the bolt 273d is pivoted. The bolt 273d is screwed in until it is stopped by being pressed against 13a. As a result, the pivot 13 a is pressed against the inner wall of the circular hole 274 and fixed to the holder portion 273. Further, the pivot shaft 13b is inserted into the circular hole 274 of the holder portion 273 from the right end of the holder portion 273 of the roller holder 27, the bolt 273e is screwed into the screw hole 273c, and the tip of the bolt 273e is pressed against the pivot shaft 13b and stopped. Until the bolt 273e is screwed in. Thus, the pivot 13 b is pressed against the inner wall of the circular hole 274 and fixed to the holder portion 273. Thus, the feeding roller 1 is completely fixed to the roller holder 27. That is, fixing means for fixing the feeding roller 1 to the roller holder 27 are the screw hole 273b, the bolt 273d, the screw hole 273c, and the bolt 273e. In this case, it goes without saying that the disc bodies 12a and 12b share the center line ω2, and the distances D5 and D6 (see FIG. 1) are set to appropriate values as described above.

The assembly of the position adjusting means 2 and the locking plate 3 is as follows. As shown in FIG. 12, the lower cylindrical body 263 of the connector 26 is fitted into the recess 271 a on the upper surface of the receiver 271 of the roller holder 27, and the screw hole 261 a of the main body 261 of the connector 26 and the holder of the roller holder 27. A bolt 261c is screwed into the screw hole 271f of 271. Further, a bolt 261 d is screwed into the screw hole 261 b of the main body 261 of the connector 26 and the screw hole 271 g of the receiver 271 of the roller holder 27. When the bolts 261c and 261d are tightened, the coupling tool 26 is fixed to the roller holder 27.

Next, the adjustment shaft 21 is loosely inserted into the circular hole 31e of the support plate 31d of the locking plate 3 with the nut 24 and the coil spring 25 removed from the adjustment shaft 21, and the coil spring 25 and the nut 24 are wound around the adjustment shaft 21. To do. As a result, the adjustment shaft 21 is fixed to the locking plate 3. However, since the adjustment shaft 21 is loosely inserted into the circular hole 31e of the support plate 31d, the adjustment shaft 21 can be rotated. Then, the lower end portion of the adjustment shaft 21 is screwed into the screw hole 262 a of the upper cylindrical body 262 of the connector 26.

Further, the shaft 28b is inserted into the sliding body 28a of the sliding mechanism 28, the lower end portion of the shaft 28b is fitted and fixed to the concave portion 271b of the receiving member 271 of the roller holder 27, and the bolt 271h from below is screwed into the screw hole of the receiving member 271. 271d and screwed into the screw hole 28c of the shaft 28b. Further, the shaft 29b is inserted into the sliding body 29a of the sliding mechanism 29, the lower end portion of the shaft 29b is fitted and fixed to the recess 271c of the receiving member 271 of the roller holder 27, and the bolt 271i is received from below the screw hole of the receiving member 271. 271e is screwed into the screw hole 29c of the shaft 29b and tightened. This completes the assembly of the position adjusting means 2.

Finally, the bolt 3Ba is inserted from behind the locking plate 3 into the circular hole 31f of the locking plate 3 (see FIG. 11), and is screwed and tightened into the screw hole 28f of the sliding body 28a of the sliding mechanism 28. Further, the bolt 3Bb is inserted into the circular hole 31g of the locking plate 3, and is screwed and tightened into the screw hole 28g of the sliding body 28a of the sliding mechanism 28. Next, the bolt 3Bc is inserted into the circular hole 31h of the locking plate 3, and is screwed and tightened into the screw hole 29f of the sliding body 29a of the sliding mechanism 29. Further, the bolt 3Bd is inserted into the circular hole 31i of the locking plate 3, and is screwed and tightened into the screw hole 29g of the sliding body 29a of the sliding mechanism 29.

Thus, the position adjusting means 2 and the feeding roller 1 are completely assembled to the locking plate 3. Since the locking plate 3 is fixed to the left side plate F1 and the right side plate F2 of the frame body part F via the shafts sx1 to sx4 as described above, the position adjusting means 2 and the feeding roller 1 are thereby connected to the sheet feeding device. It will be in the state completely assembled to SF.

Finally, the distance D2 (see FIG. 1) of the feeding outlet N is adjusted so that the interval is slightly shorter than the thickness ds1 of the sheet to be handled. This adjustment is performed by rotating the handle 22 of the position adjusting means 2. Since the handle 22 is fixed to the upper end of the adjustment shaft 21, if the handle 22 is rotated to the right, the adjustment shaft 21 is also rotated to the right, and if the handle 22 is rotated to the left, the adjustment shaft 21 is also rotated to the left. To do.

The lower end portion of the adjustment shaft 21 is screwed into the screw hole 262a of the upper cylindrical body 262 of the connector 26. The connector 26 is connected to the shaft 28b of the sliding mechanism 28 and the sliding mechanism 29 via the roller holder 27. The shaft 29b is fixed to the shaft 28b, and the shaft 28b can only slide up and down with respect to the sliding member 28a fixed to the locking plate 3. The shaft 29b is fixed to the locking plate 3 and the sliding member 29a. However, only sliding up and down is possible.

Accordingly, if the handle 22 is rotated to the right, the adjustment shaft 21 is screwed deeply into the screw hole 262a of the connector 26, and as a result, the connector 26, the roller holder 27, and the feeding roller 1 fixed to the roller holder 27 as a whole. Rises and the distance D2 increases. Conversely, if the handle 22 is rotated counterclockwise, the adjustment shaft 21 is screwed through the screw hole 262a of the connector 26, and as a result, the connector 26, the roller holder 27, and the feeding roller 1 fixed to the roller holder 27 as a whole. Descends and the distance D2 becomes smaller.

The shaft 28b slides smoothly with respect to the sliding body 28a by the action of the slide bearings 28d and 28e. The shaft 29b slides smoothly with respect to the sliding body 29a by the action of the slide bearings 29d and 29e. Accordingly, the position adjusting means 2 and the feeding roller 1 are moved up and down very smoothly by rotating the handle 22, and delicate positioning is also possible. Once the positioning is performed, a frictional force acts between the screw thread at the lower end of the adjustment shaft 21 and the screw groove of the screw hole 262a. Therefore, the position of the feeding roller 1 once adjusted unless the handle 22 is rotated. Will never go crazy.

Further, since the position adjusting means 2 and the feeding roller 1 are always urged downward by the action of the coil spring 25 wound around the adjusting shaft 21, the thickness of the sheet S passing through the feeding port N is somewhat small. Even if it changes, it is possible to smoothly feed out the sheet S corresponding to the occasional change, even if it is bent in an extreme case and suddenly thickens at that portion.

That is, when the thickness of the sheet S increases, the feeding roller 1 and the position adjusting unit 2 are pushed upward by the sheet S, and the adjustment shaft 21 is also pushed upward. That is, the nut 23 is slightly lifted from the support plate 31d. At this time, the coil spring 25 is compressed, and the resistance prevents the feeding roller 1 and the position adjusting means 2 from jumping upward rapidly.

Further, when the thickness of the sheet S decreases, the coil spring 25 extends and the feeding roller 1 and the position adjusting means 2 are pushed downward. As a result, the feeding roller 1 and the position adjusting means 2 move up and down in response to the change in the thickness of the sheet S, and the lower end portion of the feeding roller 1 is always in contact with the upper surface of the sheet S and kept in a lightly pressed state. Also, the sheet S in a state where the thickness changes suddenly is smoothly fed out.

<Operation of Example 1>
Next, the operation of the feeding roller of Example 1 will be described in detail. The operation of the frame body portion F, the storage portion SH, the support portion Ss, the conveyance portion C, the discharge portion D, the power portion P, and the control portion L of the sheet supply device SF is substantially the same as that of the conventional sheet supply device Sf. Since there is, explanation of the operation of these parts is omitted.

As shown in FIG. 1, the lowermost sheet S <b> 1 is conveyed from the storage portion SH to the feeding port N by the action of the feeding belt b, and the sheet S <b> 1 is caught in the feeding port N and fed out from the feeding port N. At this time, the distance D2, that is, the distance from the reference plane SP (the upper surface b1 of the ascending portion of the feeding belt b) to the lower end 12s of the rotating portion 11 of the feeding roller 1 is adjusted slightly smaller than the thickness ds1 of the sheet S1. Therefore, the sheet S1 is caught by the upper surface b1 of the ascending portion of the feeding belt b and the rotating portion 11 of the feeding roller 1, and the rotating portion 11 rotates clockwise in FIG. It is paid out.

At this time, the sheet S2 immediately above the sheet S1 is in a stationary state with its front end portion being locked near the lower end portion of the fixed portion 12 of the feeding roller 1. Further, the upper sheets S, S,... Are also locked along the rear arc of the fixed portion 12 and are stationary. In FIG. 1, a total of 22 sheets S including the sheet S <b> 2 are locked to the rear portion of the fixed portion 12, and the sheets S, S,. Stopped and still.

When the feeding of the sheet S1 further proceeds, the state shown in FIG. 15 is obtained. FIG. 15 shows a state where the rear end portion of the lowermost sheet S1 passes through the front end portion of the immediately upper sheet S2. Most of the sheet S2 directly above has fallen on the upper surface b1 of the ascending portion of the feeding belt b and the conveying force of the belt b is acting on the sheet S2, but the front end of the sheet S2 is still fixed to the feeding roller 1. Since it is in a state of being locked to the portion 12, the sheet S2 still does not move even in this state. At the moment when the rear end portion of the sheet S1 has finished passing the front end portion of the sheet S2, as shown in FIG. 16, the sheet S2 completely falls on the upper surface b1, and the locked state by the fixed portion 12 disappears. The obstruction of the conveying force of the feeding belt b is eliminated, and the sheet S2 is conveyed forward (direction Y) and is caught in the feeding port N. However, since the sheet S1 has already passed through the feeding port N at that time, there is no trouble that the sheet S1 and the sheet S2 overlap and are caught in the feeding port N.

In the state of FIG. 15, the sheet S1 is still in a state where the rear end portion is caught in the feeding port N, and therefore the conveyance speed of the sheet S1 is the moving speed of the feed belt b. Although the front portion of the sheet S1 seems to be bitten by the discharge belt db of the discharge portion D and the press rollers dpr, dpr,..., The upper surface db1 of the upper portion of the discharge belt db and the press roller lower end dra Is adjusted to be slightly wider than the thickness ds1 of the sheet S1, the conveying force of the discharge belt db does not act so strongly on the sheet S1, and the sheet S1 is fed out at the moving speed of the feeding belt b. .

However, since the sheet S1 also loses contact with the feeding belt b from the moment when the sheet S1 finishes passing through the feeding port N as shown in FIG. 16, the sheet S1 is discharged by the conveying force of the discharge belt db. As described above, since the moving speed of the discharge belt db is faster than the moving speed of the feeding belt b, a distance D8 occurs between the rear end portion of the sheet S1 and the front end portion of the sheet S2, and the distance D8 passes as shown in FIG. It grows in proportion to time. Therefore, the trouble that the sheet S1 and the sheet S2 overlap in the discharge unit D does not occur.

As shown in FIGS. 16 and 17, when the sheet S <b> 1 moves to the discharge portion D and the sheet S <b> 2 is caught in the feeding port N and starts passing through the feeding port N, the next sheet S <b> 3 is already in FIG. 1. The sheet S2 is locked to the fixed portion 12 at exactly the same position as the sheet S2 is locked. In this way, the sheets S, S,... Deposited in the storage unit SH are sequentially and smoothly fed out from the feeding port N and discharged from the discharge unit D to the outside of the apparatus.

In this configuration and operation, there are no factors that cause the two or more sheets S to overlap and be caught in the feeding port N or the discharge portion D, so that two or more sheets S overlap and are fed out, discharged, or fed. The trouble that the sheet S is clogged at the outlet N or the discharge portion D and the operation of the apparatus is stopped will not occur. That is, in FIG. 17, since the discharge speed of the sheet S1 is faster than the conveyance speed of the sheet S2, the distance D8 between the rear end of the sheet S1 and the front end of the sheet S2 is increased, so the sheets S1 and S2 Troubles due to the overlapping of the two are unlikely to occur in principle.

Even if the thickness of the sheet S is slightly increased or decreased, if the positional relationship between the center line ω1 of the rotating portion 11 of the feeding roller 1 and the center line ω2 of the fixed portion 12 is appropriately adjusted, that is, the distances D5 and D6 are set. Can be dealt with by operating the handle 22 (see FIGS. 3 and 5) and fine-adjusting the opening degree (distance D2) of the feeding port N within a certain range. However, when there is an extreme increase / decrease, such as when the thickness of the sheet S is 1.5 times or more, or less than half, the pivots 13a and 13b of the feeding roller 1 are moved from the holder portion 273 of the roller holder 27. It is necessary to release the fixation and readjust the positional relationship between the center line ω1 of the rotating portion 11 and the center line ω2 of the fixed portion 12.

FIG. 18 shows a case where a sheet Tk having a thickness tk1 that is 1.5 times or more the thickness ds1 of the sheet S is fed out. In this case, even if the distances D5 and D6 of the feeding roller 1 remain as shown in FIG. 1 and the handle 22 is operated to adjust the opening degree of the feeding port N, that is, the distance D2 slightly narrower than the thickness tk1, the sheets Tk and Tk. The smooth delivery of ... is not impossible. However, if the distances D5 and D6 remain as shown in FIG. 1, the distance D7 (FIG. 1) from the feeding port N to the front end portion of the sheet Tk2 immediately above the lowermost sheet Tk1 is too wide, and the trouble due to that (described above) Therefore, when the thickness tk1 of the sheet Tk exceeds 1.5 times the thickness ds1 of the sheet S, the pivot shafts 13a and 13b of the feeding roller 1 are moved to the roller holder 27. It is desirable to release the fixing from the holder portion 273 and readjust the positional relationship between the center line ω1 of the rotating portion 11 and the center line ω2 of the fixed portion 12.

FIG. 18 shows a state resulting from the above readjustment. First, the handle 22 is operated to adjust the degree of opening of the feeding outlet N, that is, the distance D2a is slightly narrower than the thickness tk1, and then the pivots 13a and 13b are moved from the state of FIG. It was rotated clockwise and re-fixed at an angle β2 larger than the angle β1 with respect to the line segment sp. As a result, the distance D5a is slightly smaller than the distance D5, and the distance D6a is slightly larger than the distance D6. As a result, the distance D7a does not increase easily, and smooth feeding of the sheets Tk, Tk,... Is ensured. In the discharge part D, the distance D3a is naturally readjusted to be slightly wider than the thickness tk1. The standard for readjustment of the angle β2 is that the distance D1a between the reference plane SP and the lower end 12s of the fixed portion 12 is set to be 1.5 times the thickness tk1 of one sheet Tk.

Next, on the contrary, readjustment in the case of handling a sheet Tn having a thickness tn1 less than or equal to half the thickness ds1 of the sheet S will be described. FIG. 19 shows a state in which the sheets Tn, Tn,... Are fed while the distances D5 and D6 are set in the state shown in FIG. In this case, as shown in FIG. 20 which is an enlarged view, the uppermost sheet Tn2 is caught in the rotating portion 11 while the lowermost sheet Tn1 passes through the feeding port N, and trouble occurs due to this. Is inevitable.

Therefore, the pivots 13a and 13b of the feeding roller 1 must be released from the holder portion 273 of the roller holder 27, and the positional relationship between the center line ω1 of the rotating portion 11 and the center line ω2 of the fixed portion 12 must be readjusted. FIG. 21 shows the state after appropriate readjustment. That is, the handle 22 is operated to adjust the opening degree of the feeding outlet N, that is, the distance D2b is slightly narrower than the thickness tn1, and then the pivots 13a and 13b are moved from the state of FIG. It was rotated around and re-fixed at an angle β4 smaller than the angle β1 with respect to the line segment sp. As a result, the distance D5b is slightly larger than the distance D5, and the distance D6b is slightly smaller than the distance D6.

In this state, as clearly shown in FIG. 22 which is an enlarged view, while the lowermost sheet Tn1 passes through the feeding port N, the immediately upper sheet Tn2 is locked to the fixed portion 12 and is in a stationary state. Further, the distance D7b from the front end portion of the immediately above sheet Tn2 to the feeding port N is not too wide. Accordingly, the sheets Tn, Tn,... Can be smoothly fed out. At this time, as shown in FIG. 21, it is natural that the distance D3b is readjusted to be slightly wider than the thickness tn1 even in the discharge portion D. A standard for readjustment of the angle β4 is that the distance D1b between the reference plane SP and the lower end 12s of the fixed portion is set to be 1.5 times the thickness tn1 of one sheet Tn.

  The sheet supply apparatus provided with the feeding roller of the present invention is frequently used mainly at bookbinding sites such as continuous feeding of cardboard for book cover. Therefore, the sheet fed from the sheet feeding apparatus provided with the feeding roller of the present invention is carried to the next process by the belt conveyor. That is, since the sheet feeding apparatus provided with the feeding roller of the present invention is used in the process of consistent flow work, when troubles such as double feeding of sheets and stop of operation occur, the other processes Result in stopping.

  The feeding roller of the present invention can be easily mounted on the conventional sheet feeding apparatus by using most of the conventional sheet feeding apparatus as it is, and making a slight change to a part of the feeding section, the storage section, and the frame section. Therefore, as an invention that can realize a work process that minimizes the investment amount and does not cause trouble, it can respond to the voices of many work sites such as bookbinding work sites.

It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. FIG. 3 is a right side view in which a part of the sheet feeding apparatus having the feeding roller according to the first embodiment of the present invention is cut away. FIG. 3 is a front view of a main part of the sheet feeding apparatus having a feeding roller according to the first exemplary embodiment of the present invention, in which a part when viewed from the X direction in FIG. It is a top view of the sheet supply apparatus which has the feeding roller of Example 1 of this invention. FIG. 3 is a right side view in which a part of the sheet feeding apparatus having the feeding roller according to the first exemplary embodiment of the present invention with a feeding roller as a center is cut out. The upper part of the storage unit, the feeding unit, and the discharging unit is removed from the sheet feeding apparatus having the feeding roller according to the first embodiment of the present invention, and the frame body, the supporting unit, the conveying unit, the lower part of the discharging unit, the power unit, and the control unit are provided. It is the external appearance perspective view which notched the displayed one part. FIG. 2 is an external perspective view in which a part of the entire sheet feeding apparatus having a feeding roller according to the first exemplary embodiment of the present invention is cut out. 1 is an external perspective view of a feeding unit of a sheet feeding apparatus having a feeding roller according to a first embodiment of the present invention, and shows a part of a conveyance unit and a part of a discharge unit. (A) It is the external appearance perspective view seen from the front upper right of the latching plate which defines the storage part and feeding part of the sheet supply apparatus which has a feeding roller of Example 1 of this invention. (B) It is the external appearance perspective view seen from the back upper right hand of the latching plate which defines the storage part and feeding part of the sheet supply apparatus which has a feeding roller of Example 1 of this invention. It is an external appearance perspective view of the principal part of the delivery part of the sheet supply apparatus which has a delivery roller of Example 1 of this invention. FIG. 3 is an assembly diagram of a sliding mechanism of a position adjusting unit of a feeding unit of a sheet feeding apparatus having a feeding roller according to Embodiment 1 of the present invention. FIG. 3 is an assembly diagram of a main part of a position adjusting mechanism of a position adjusting unit of a feeding unit of a sheet feeding apparatus having a feeding roller according to Embodiment 1 of the present invention. (A) It is the external appearance perspective view seen from the front right hand of the feeding roller of Example 1 of this invention. (B) It is the external appearance perspective view seen from the front upper right hand of the delivery roller of Example 1 of this invention. (A) It is an external appearance perspective view which shows the pivot and center axis | shaft of the feeding roller of Example 1 of this invention. (B) It is the top view which notched some delivery rollers of Example 1 of this invention. It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. It is an enlarged view of the principal part of FIG. It is explanatory drawing explaining an effect | action of the feeding roller of Example 1 of this invention. It is an enlarged view of the principal part of FIG. It is the external appearance perspective view which notched a part of the whole conventional sheet supply apparatus. FIG. 6 is a right side view in which a part of a portion around a feeding portion of a conventional sheet feeding device is cut away. FIG. 24 is a front view of a feeding unit of a conventional sheet feeding device as seen from the x direction in FIG. 24, and a part of the feeding unit is also shown. It is explanatory drawing explaining the effect | action of the feeding part of the conventional sheet supply apparatus. It is the external appearance perspective view which abbreviate | omitted one part of the front board and attachment which delineate | feeds out the feeding part and storage part of the conventional sheet | seat supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Feeding roller 11 Rotating part 111 Roller 111a Ball bearing 111b Hard ring 111c Elastic ring 112 Roller 112a Ball bearing 112b Hard ring 112c Elastic ring 12 Fixed part 12a Disc body 12b Disc body 12s Lower end 13a Axis 13b Axis 14b Center axis 14a Shaft 15a Disc 15b Disc 2 Position adjusting means 21 Adjustment shaft 22 Handle 23 Nut 24 Nut 25 Coil spring 26 Connector 261 Main body 261a Screw hole 261b Screw hole 261c Bolt 261d Bolt 262 Upper tube portion 262a Screw hole 263 Lower cylinder portion 263 Hole 27 Roller holder 271 Receiving member 271a Recessed portion 271b Recessed portion 271c Recessed portion 271d Screw hole 271e Screw hole 271f Screw hole 271g Screw hole 271h Vol G 271i Bolt 272 Connector 273 Holder part 273a Main body 273b Screw hole 273c Screw hole 273d Screw 273e Screw 274 Circular hole 28 Sliding mechanism 28a Slider 28b Shaft 28c Screw hole 28d Slide bearing 28e Slide bearing 28e Screw hole 28g Screw hole 28g Moving mechanism 29a Slide body 29b Shaft 29c Screw hole 29d Slide bearing 29e Slide bearing 29f Screw hole 29g Screw hole 3 Locking plate 31 Rear plate 31a Body 31b Notch 31c Notch 31d Bearing plate 31e Circular hole 31f Circular hole 31g Circular hole 31g Circular hole 31g Circular hole 31i Circular hole 32 Left side plate 32a Circular hole 32b Circular hole 33 Right side plate 33a Circular hole 33b Circular hole 3Ba Bolt 3Bb Bolt 3Bc Bolt 3Bd Bolt C Conveying part D Discharging part D1 Distance D1a Distance Separate D1b Distance D2 Distance D2a Distance D2b Distance D3 Distance D3a Distance D3b Distance D4 Distance D5 Distance D5a Distance D5b Distance D6 Distance D6a Distance D6b Distance D7 Distance D7a Distance D7b Distance D7b Distance D7b Distance D7b Distance D7b Distance D7b Distance D7b Distance D7b Plate F3 Lid plate F4 Rear plate Fr Frame body part Fr1 Left side plate Fr2 Right side plate Fr3 Lid plate Fr4 Rear plate GL Horizontal plane HC1 Position adjustment mechanism HC11 member HC12 member HC2 Position adjustment mechanism HC21 member HC22 member L Control part N control part N control part N part R large feed roller S sheet S1 sheet S2 sheet S3 sheet SF sheet feeding device SH storage portion SH1 sheet pressing plate SH2 sheet pressing plate SO feeding portion SP reference plane Sh storing portion So feeding portion Ss bearing portion Sf sheet feeding device Tk Tk1 sheet Tk2 sheet Tn sheet Tn1 sheet Tn2 sheet X direction Y direction a1 attachment a2 attachment b feed belt b1 upper surface br bearing bt bolt cc connector co cord cp receiver cp1 body cp cylindrical body cp2 cylindrical body cp2 cylindrical body cx2 axis cx3 axis cx4 axis d1 distance d2 distance d3 distance d4 distance db discharge belt db1 upper surface dfr frame body dh handle dpr press roller dr discharge roller dr lower end ds discharge support plate ds1 thickness ds1 thickness ds1 thickness f1 front plate f1a lower end f2 front plate f2a lower end h handle h1 circular hole h2 screw hole h3 circular hole ha1 circular hole ha2 screw hole ha3 screw hole ha4 circular hole ha5 screw hole ha6 screw Hole hn1 Handle hn2 Handle hb Handle hc Height adjustment mechanism hc1 Position adjustment mechanism hc11 Member hc12 Member hc2 Position adjustment mechanism hc21 Member hc22 Member m Motor mb Drive belt mr Drive roller mx Drive shaft n Feed outlet nn1 Payout nt1 Nut nt2 Nut o1 Long hole o2 Long hole o3 Long hole o4 Long hole p Bearing plate pr1 Pinch roller pr2 Pinch roller r Small feed roller rs Roller rsa Lower end rx Shaft sb Support plate sh1 Sheet holding plate sh2 Sheet holding plate Sh2 Sheet holding plate Sh2 Sheet holding plate Sh2 Minute ssc position adjusting mechanism sw switch swb switch box sx axis sx1 axis sx2 axis sx3 axis sx4 axis t support plate tR1 roller tR2 roller tR3 roller tR4 roller tk1 thickness tm1 transmission belt tm2 Belt tn1 thickness tr1 roller tr2 roller tr3 roller tr4 roller tx axis washer x direction α angle β1 angle β2 angle β3 angle β4 angle β5 angle δ distance φ diameter ω1 center line ω2 center line ω3 center line

Claims (4)

  A frame part that is a framework of the entire configuration of the apparatus, a storage part that stores a plurality of stacked sheets, a support part that supports rear end parts of the plurality of stacked sheets, and a storage part that is stacked on the storage part A conveying unit that conveys the lowest sheet of the plurality of sheets, a feeding unit having a feeding roller that feeds only the lowest sheet of the plurality of stacked sheets from the feeding port, and the fed sheet In the feeding section of the sheet feeding apparatus, which includes a discharge section that discharges the sheet to the outside of the apparatus, a power section that supplies power to the conveyance section and the discharge section, and a control section that controls the power section, The feeding roller located at the upper part is composed of a rotating part and a fixed part, and when the upper surface of the ascending part of the feeding belt of the conveying part is a reference plane and the direction in which the sheet is fed is the front, Behind the rear of the rotating part That is, it protrudes in the direction of the storage portion, and the position adjustment of the rotating part and the fixed part can be performed simultaneously by a single position adjusting means, and only the lowermost sheet has the upper surface of the upper part of the feeding belt and the feeding roller A feeding roller of a sheet feeding apparatus, wherein the feeding roller is configured to be sandwiched between rotating portions and fed from a feeding port, and a sheet immediately above is locked to a fixed portion.   The rotating portion of the feeding roller is a roller, and the outer portion of the roller is pivotally mounted with a ball bearing mechanism with respect to the pivot fixed to the position adjusting means, and the fixed portion of the feeding roller rotates. It is fixed to the position adjusting means by a cylindrical body or disk body having the same diameter as the portion, and the center of the cylindrical body or disk body of the fixed portion is rearward from the center of the roller that is the rotating portion, that is, in the direction of the sheet storage portion. 2. The feeding roller of a sheet feeding device according to claim 1, wherein a configuration is realized in which the rear portion of the fixed portion protrudes rearward from the rear portion of the rotating portion, that is, toward the storage portion by being eccentric.   It has a central axis to which a cylindrical body or a disk body which is a fixed part of the feeding roller is fixed, and the central axis is fixed integrally with a pivot of the roller which is a rotating part. The configuration in which the rear portion of the fixed portion protrudes rearward from the rear portion of the rotating portion, that is, toward the storage portion is realized by the center of the central axis being eccentric. Feeding roller of the sheet feeding apparatus. The lower part of the position adjusting means is configured as a roller holder for fixing the pivot of the rotating part of the feeding roller, and the pivot is fixed to the roller holder by releasing the pivot fixing means for fixing the pivot of the rotating part to the holder part of the roller holder. It is possible to rotate freely in the holder part of this, so that the central axis of the cylindrical body or disk body that is the fixed part can be rotated with respect to the pivot axis of the roller, and the pivot axis of the roller is fixed again at an arbitrary position. 4. The feeding roller of a sheet feeding apparatus according to claim 3, further comprising a pivot fixing means capable of fixing the relative positional relationship between the fixed portion and the rotating portion.

Images