JP4648236B2 - Paper bundle feeder - Google Patents

Description

  The present invention relates to a paper bundle feeding device.

  Conventionally, an operation of supplying the paper bundle to a packaging machine that wraps a paper bundle of a predetermined amount of paper is manually performed by an operator from a paper bundle formed by laminating a plurality of papers from a predetermined amount of paper. It has been carried out that a paper bundle is rolled and conveyed to the packaging machine side. In order to reduce the burden on the operator due to such manual work, the paper bundle feeding device is configured to insert a fork claw and sort and feed a predetermined number of paper bundles from a bundle of many sheets on the base. Since the stacked papers are in close contact with each other, in order to facilitate separation, a paper with a pair of air holes that blows air from the tip of the separation claw provided between the fork claws between the paper bundles is proposed. (For example, refer to Patent Document 1).

Further, there has also been proposed one in which a total of three air holes are formed at one intermediate portion of the separation claw and two on both sides (see, for example, Patent Document 2).
JP 2000-25357 (paragraphs 0049 to 0055 and FIG. 6) Japanese Patent No. 3455432 (paragraphs 0035 and 0036 and FIG. 4)

  However, since the devices described in Patent Documents 1 and 2 only blow out air forward, the air does not spread so much in the left-right direction, and separation of the paper bundle to be fed and the lower paper bundle is ensured. It was difficult to make. Further, if the separation is insufficient, the lower paper bundle may be damaged when the paper bundle to be fed is fed by the fork claws.

  The inventor does not blow air between the paper bundle to be fed and the lower paper bundle to separate them, but air in a direction inclined with respect to the paper feeding direction by the paper feeding claws in plan view. The present invention has been made with the idea of further increasing the separation between the paper bundle to be fed and the paper bundle below the paper bundle.

  It is an object of the present invention to provide a paper bundle feeding device that improves separation between the paper bundle to be fed and a paper bundle below the paper bundle.

According to the first aspect of the present invention, a continuous ream tape is inserted every predetermined number on the rear side of a paper bundle formed by laminating a large number of sheets, and a part of the ream tape is bent and inserted. By winding up, an opening is formed between the paper bundle to be fed, which is the uppermost predetermined number of paper bundles, and the remaining paper bundle positioned below it, and a separation claw is inserted into the opening. the insert the pair of left and right sheet feed pawl on the right and left sides of the separation claw, the while from the air outlet holes of the separating claw blowing air to the sheet feeding direction forward by the feeding claws, paper feed pawl of the right-and-left Therefore, a paper bundle feeding device for feeding the paper bundle to be fed forward, which is supported by a support frame and movably in the left-right direction with respect to the support frame and inserting the separation claw into the opening. Separation claw unit that widens the part and left and right with respect to the support frame A pair of paper feeding claws movably supported disposed on both sides of the separating claw and a paper feeding claw unit of the right and left pair to be inserted into the opening on both sides of the separation claw in the separation At the tip of the nail, one or a plurality of air blowing holes for blowing air in a direction inclined with respect to the paper feeding direction by the paper feeding nail in a plan view with the separation claw inserted into the opening is formed. The paper feed claw unit has a guide rail for guiding movement of the paper feed claw in the paper feed direction, and the guide rail is inclined upward in the paper feed direction . Here, the direction in which the air is blown out from the air blowing hole of the separation claw is lower than the horizontal direction in the side view, in addition to the case where the air is blown out in the horizontal direction in the side view as described in Patent Documents 1 and 2 described above. This includes the case of blowing air toward

  In this way, when the reel tape is wound up, an opening is formed between the uppermost paper bundle to be fed and the lower paper bundle, and a separation claw is provided in the opening. The paper bundle to be fed is further lifted to widen the opening, and in that state, a pair of paper feed claws are inserted and moved left and right, and then the paper feed claws are pushed out to the packaging machine side. A series of operations of sending a sheet bundle to be fed to the packaging machine side can be performed without manual operation. In particular, with the separation claw inserted into the opening, air is blown out from the air blowing hole of the separation claw so as to spread between the paper bundle to be fed and the lower paper bundle. Therefore, the paper bundle to be fed and the lower paper bundle are separated.

That is, air is blown in an oblique direction from the air blowing holes of the separation claw member toward the left and right edges of the paper feed target paper bundle and the lower paper bundle. Air is blown out in different directions so as to spread between the lower paper bundle and the paper bundle to be fed and the lower paper bundle are more easily separated.
The paper feed claw unit has a guide rail for guiding the movement of the paper feed claw in the paper feed direction, and the guide rail is inclined upward in the paper feed direction. The distance between the target paper bundle and the lower paper bundle is increased, and this is more effective in preventing the paper of the lower paper bundle from moving or being damaged together.

The invention of claim 2 is characterized in that a ream tape continuous every predetermined number is inserted into the rear side of a bundle of paper in which a large number of papers are laminated, and a part of the ream tape is bent and inserted. By winding up, an opening is formed between the paper bundle to be fed, which is the uppermost predetermined number of paper bundles, and the remaining paper bundle positioned below it, and a separation claw is inserted into the opening. The pair of left and right paper feed claws are inserted into the left and right sides of the separation claw, and the pair of left and right paper feed claws are blown out from the air blowing holes of the separation claw forward in the paper feed direction by the paper feed claw. Thus, a paper bundle feeding device for feeding the paper bundle to be fed forward, which is supported by a support frame and movably in the left-right direction with respect to the support frame and inserting the separation claw into the opening. Separation claw unit that widens the part and the left-right direction with respect to the support frame A pair of paper feed claws that are movably supported and disposed on both sides of the separation claw, and the pair of left and right paper feed claw units that are inserted into the opening on both sides of the separation claw, and the separation claw One or a plurality of air blowout holes for blowing air in a direction inclined with respect to the paper feeding direction by the paper feeding claws in a plan view with the separation claw inserted into the opening are formed in the front end portion. Both or one of the separation claw and the paper feeding claw is covered with a protective material in a state where air can be blown out.
In this way, by covering both or one of the separation claw and the paper feeding claw with a protective material in a state in which air can be blown out, damage to the paper bundle can be avoided without impairing air blowing. can do.
According to a third aspect of the present invention, the separation claw unit moves the lower claw downward while moving the lower paper bundle while feeding the paper bundle to be fed. It is also possible to have an actuator for pressing the paper bundle.

In this case, while the paper feed claw unit moves and feeds the paper feed target paper bundle, the separation claw presses the lower paper bundle downward, so that the paper feed target paper bundle or The lower paper is prevented from moving following the feed of the paper feed claw.
According to a fourth aspect of the present invention, the paper feed claw can be configured such that the outer end of the paper feed is curved and a plurality of air passages are formed in parallel so as to open to the curved portion.

By doing so, the separation property between the paper bundle to be fed and the paper bundle below it is further enhanced by the air from the separation claw and the air from the paper feed claw.
In this case, as described in claim 5 , it is desirable that the pressure of the air supplied to the air passage can be adjusted according to the paper quality.
In this way, the pressure of the air blown from the sheet feeding claw is adjusted according to the paper quality, and a certain separation property is ensured.

  Since the present invention is configured as described above, an opening is formed between the paper bundle to be fed, which is the uppermost paper bundle when the reel tape is wound up, and the lower paper bundle, and the opening. In this state, a pair of left and right paper feeding claws are inserted on both the left and right sides of the separation claw while blowing air from the air blowing holes of the separation claw to the opening. When feeding the sheet bundle to be fed forward with the sheet feeding nail, air is blown in a direction inclined with respect to the sheet feeding direction by the sheet feeding nail in a plan view. Separation between the upper sheet bundle to be fed by the air blown out from the lower sheet bundle and the lower sheet bundle can be improved.

  In particular, the “paper bundle handling operation”, which has been a considerable burden because the worker has to do it manually, is performed mechanically, which can greatly reduce the burden on the worker and contribute to labor saving. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are a schematic front view and a schematic plan view showing an embodiment of a paper bundle feeding device according to the present invention, respectively.

  This paper bundle feeding device 1 automatically feeds a predetermined number of paper bundles sequentially from the upper side of a paper bundle formed by laminating a large number of papers, to the packaging machine (not shown) side for packaging them. To send. That is, a ream tape made of paper or a synthetic resin film is inserted into the rear side of a paper bundle formed by laminating a large number of papers with a predetermined number of sheets folded and inserted, and the ream tape Is formed to form a chevron-shaped opening S between the paper bundle to be fed, which is the uppermost predetermined number of paper bundles, and the remaining paper bundle located below (see FIG. 8). Then, a separation claw is inserted into the opening S, and in that state, a pair of left and right paper feeding claws are inserted into the left and right sides of the separation claw while blowing air from the air blowing holes of the separation claw, The pair of left and right sheet feeding claws feeds the sheet bundle to be fed forward (for example, on the packaging machine side).

  As shown in FIGS. 1 and 2, the support frame 2 of the sheet bundle feeding device 1 has a ceiling portion 2A and four column portions 2B. A support frame 3 having a square shape in plan view is supported at the center of the ceiling 2A so as to be movable in the vertical direction. The vertical movement of the support frame 3 is performed by the first air cylinder 4 provided on the ceiling 2A. Guide rails 5 and 5 are provided on the upper convex portion 3A of the support frame 3 in the vertical direction, and the sliders 6 and 6 of the ceiling portion 2A are slidably engaged with the guide rails 5 and 5. The raising / lowering of the support frame 3 is guided by this engagement relationship, and the raising / lowering is performed stably.

  By the operation of the first air cylinder 4, a lower work position where normal paper feeding work is performed and an upper retracted position above the work position can be taken alternatively.

  The support frame 3 is provided with an approach frame 11 that is rectangular in plan view and is long in the left-right direction S1 so as to be movable in the front-rear direction S2. That is, the approach frame 11 is provided with a pinion 13 that is rotationally driven by a servo motor 12 with a reduction gear (see FIG. 6), and the support frame 3 is provided with a rack 14 that extends in the front-rear direction S2. A pair of guide rails 15, 15 extending in parallel with the rack 14 interposed therebetween are provided on the lower surface side of the support frame 3, while sliders 16, 16 slidably engaged with the guide rails 15, 15 are approach frames. 11 is provided on the upper surface side. Then, when the pinion 13 is engaged with the rack 14, the approach frame 11 can move in the front-rear direction S2.

  Further, as shown in an enlarged view in FIG. 3, another rack 21 extending in the left-right direction S <b> 1 is provided on the lower surface side of the approach frame 11, and the left feeding claw unit A, separation claw unit B, and right feeding Pinions 26A, 26B, and 26C that are provided on the upper support frames 22, 23, and 24 that constitute the paper nail unit C and that are driven to rotate by servo motors 25A, 25B, and 25C with a reduction gear mesh with each other, whereby each upper support frame 22 is engaged. To 24 are moved in the left-right direction S1. A pair of guide rails 27 extending in the left-right direction S1 are provided on the lower surface of the approach frame 11, while sliders 28A, 28B, which are slidably engaged with the guide rails 27 on the upper surfaces of the upper support frames 22-24. 28C is attached.

  The upper support frame 23 of the separation claw unit B supports the separation claw 31 and is supported so as to be movable in the front-rear direction S2. The upper support frames 22 and 24 of the paper feed claw units A and C on both sides of the separation claw unit B support the left and right upper and lower paper feed claws 41A, 41B, 42A and 42B, respectively, and are movable in the front-rear direction S2. It is supported.

  As shown in FIG. 4, the upper support frame 23 of the separation claw unit B has a lower extension 23 a that extends downward. A second air cylinder 33 that supports the tape pressing plate 32 so as to be movable up and down is provided on the lower end front side of the lower extension portion 23a, and a cylinder mounting seat 34 is provided on the lower end rear side. A fourth air cylinder 37 for advancing and retracting the frame 36 supporting the third air cylinder 35 in the front-rear direction S2 is attached to the cylinder mounting seat 34. The third air cylinder 35 moves the separation claw 31 in the vertical direction. A laser sensor 38 for detecting the insertion position is provided in the vicinity of the second air cylinder 33 for the tape pressing plate 32.

  In addition, upper and lower rollers 51 and 52 for winding the ream tape T are provided between the tape pressing plate 32 and the separation claw 31. As shown in FIG. 3, a lower sprocket 53 is provided at one end of a roller shaft 51 a of the upper roller 51, and the lower sprocket 53 is rotationally driven by a torque motor 56 with a speed reducer via a chain 54. 57. An operation handle 58 is provided at the other end of the roller shaft 51a of the upper roller 51 so that it can be wound up manually.

  As shown in FIG. 5, the separation claw 31 has a tip portion 31 a whose upper surface is inclined so that the thickness becomes thinner toward the tip side in a triangular shape in plan view, Air blowing holes 31b and 31c for blowing air in different directions toward both sides of the opening S are provided. That is, the two air blowing holes 31b and 31c at the leading end portion 31a of the separation claw 31 feed the paper by the paper feeding claw in plan view between the paper feeding target paper bundle P1 and the lower paper bundle P2. Air is blown out in a direction inclined with respect to the direction (in this embodiment, a direction inclined with respect to the center line of the separation claw 31 in plan view). As shown in FIG. 8, the tip 31a of the separation claw 31 is covered with a cylindrical protective member 61 made of felt, elastic material, or the like, and is configured so as not to break the paper due to contact with the paper. . The protective material 61 is made of a material that is formed with holes through which air can be blown out from the air blowing holes 31b and 31c or that allows air to pass through. Further, when the separation claw 31 has a shape or material that does not damage the paper, the protective material can be omitted.

  As shown in FIG. 5, the air blowing holes 31b and 31c open as downstream ends of the air passages 31e and 31f inclined with respect to the center line of the separation claw 31, and the upstream ends of both the passages 31e and 31f are connected to the air passage 31e. It communicates with the downstream end of the air passage 31g extending on the extension line. The air passage 31g crosses an air passage 31h that has an upstream end opening 31ga closed by a blind plug (not shown) and extends in the center line direction of the separation claw 31 having a passage cross-sectional area larger than that of the air passage 31g. It communicates with the passage 31h. An air pipe (not shown) is connected to the upstream end opening 31ha of the air passage 31h in order to connect to an air source (not shown).

  Here, the direction in which the air is blown out from the air blowing holes 31b and 31c, that is, the direction in which the air passages 31e and 31f extend, is set so that the inclination angle θ is 90 to 110 ° with respect to the separation claw centerline L.

  In this way, by blowing air from the air blowing holes 31b and 31c in different directions having a constant angle θ, it is possible to blow air over a wider range than when blowing in parallel, and A thin air layer can be formed entirely between the paper bundle and the paper bundle below it. Accordingly, the separation between the paper bundle to be fed and the lower paper bundle is improved.

  Further, by forming the tip portion 31a in a triangular shape in plan view, even when the opening S is formed in a small shape by winding the ream tape T, it can be inserted without damaging the paper around the opening S. ing. The main body portion 31d on the rear side of the front end portion 31a has a rectangular shape in plan view, and is thicker than the rear end portion of the front end portion 31a. The insertion of the separation claw 31 further widens the angle-shaped opening S. It is supposed to be. Also from this point, the separation claw 31 has an advantageous structure for insertion without damaging the paper. Note that a mounting hole 31p for mounting to the movable portion 35a of the air cylinder 35 is formed in the main body portion 31d.

  As shown in FIGS. 3 and 6, electric slide bases 43A and 43B (manufactured by Nissei Corporation, SBB-17) are provided on the lower extensions of the upper support frames 22 and 24 of the left and right sheet feeding claw units A and C. -M60-1502R), the lower support frames 44A and 44B are supported to be movable in the front-rear direction S2. Before and after the lower edge of the lower support frame, as shown in the left paper feed claw unit A in FIG. 6, an upper paper feed claw 41A (auxiliary feed) that is raised and lowered by the fifth and sixth air cylinders 45 and 46, respectively. Paper claw) and a lower paper feed claw 41B, a paper bundle to be fed is sandwiched between the paper feed claws 41A and 41B, and a movable part is driven along the guide rail 44b by driving a servo motor 44a. 44c (movable part 44c on which the lower support frame 44A is supported) can be sent to the packaging machine side. This configuration is the same for the right paper feed claw unit C. Note that the lower surface of the upper sheet feeding claw 41A and the upper surface of the lower sheet feeding claw 41B are inclined so that the thickness becomes thinner toward the tip, and a protective material (not shown) is provided so as not to damage the paper bundle. It is covered with. For example, an elastic material or a felt material is used as the protective material. Further, when the paper feeding claws 41A and 41B have a shape or material that does not damage the paper, the protective material can be omitted.

  The left and right lower paper feed claws 41B and 42B are formed symmetrically in a plan view. For example, the left lower paper feed claws 41B have a pair of curved outer ends as shown in FIG. Air blowing holes 41a, 41b are provided at the tip. Since the air blowing hole 41a is formed in the curved portion on the outer side of the distal end portion, air is blown out slightly to the side, and the air blowing hole 41b blows out air toward the front.

  The air blowing holes 41a and 41b are opened as downstream ends of the parallel air passages 41c and 41d. The upstream ends of the air passages 41c and 41d are connected to an air source (not shown) through other air passages 41e and 41f having a passage sectional area larger than that of the air passages 41c and 41d. An attachment hole 41g for attaching to the movable portion 46a of the air cylinder 46 is formed between the air passages 41c and 41e and the air passages 41d and 41f. The pressure of the air supplied to the air passages 41c and 41d can be adjusted according to the paper quality, so that the pressure of the air blown from the paper feed claws 41B and 42B is adjusted according to the paper quality. Therefore, it is possible to ensure a certain separability.

  Next, a paper feeding operation by the above apparatus will be described.

  When performing the paper feeding operation, first, the units A to C at the initial position (position near the left end in FIG. 1) with respect to the support frame 3 are placed in the left-right direction (the longitudinal direction of the paper) of the paper bundle P1 to be fed. ) Move around the center of).

  Then, the approach frame 11 is driven by a servo motor 12 with a speed reducer, and the approach frame 11 is advanced toward the sheet bundle to be fed by the engagement of the pinion 13 and the rack 14. Then, the upper end portion of the ream tape T is sandwiched between the upper and lower rollers 51 and 52 and is manually wound up by the operation handle 58, and the preparation for the automatic operation is completed.

  First, the tape pressing plate 32 is lowered by the operation of the second air cylinder 33, and the portion corresponding to the ream tape T is pressed from the upper side of the sheet bundle P1 to be fed. In this state, the ream tape T is wound up by the rotation of the torque motor 56, whereby, as shown in FIG. 8, between the uppermost sheet bundle P1 and the lower sheet bundle P2 as shown in FIG. A chevron-shaped opening S is formed (see FIG. 8).

  As shown in FIGS. 3 to 6, the fourth air cylinder 37 is operated, the separation claw 31 is inserted into the opening S, and the tape pressing plate 32 is raised by the operation of the air cylinder 35, so that Cancel the tape pressing operation. Then, from the air blowing holes 31b and 31c of the tip end portion 31a of the separation claw 31, it is inclined in a direction inclined with respect to the paper feeding direction by the paper feeding claws 41A and 42A in a plan view, that is, in a plan view. In this direction, air is blown out to improve the separation between the paper bundle P1 to be fed and the lower paper bundle P2. That is, instead of ejecting a parallel air flow from the front end portion of the separation claw, an air flow is ejected in different directions inclined with respect to the center line of the separation claw. The separability from the bundle P2 is further enhanced.

  Thereafter, the air cylinder 35 is further contracted to raise the separation claw 31, whereby an angle S-shaped opening S between the uppermost sheet bundle P 1 and the lower sheet bundle P 2. Is even larger. The electric slide bases 43A and 43B are driven to move the lower support frames 44A and 44B, thereby inserting the paper feed claws 41A and 41B between the paper feed target paper bundle and the lower paper bundle. .

Then, the air cylinder 35 is extended to lower the separation claw 31, and the lower sheet bundle P2 of the sheet bundle P1 to be fed is pressed from above to complete the removal of the ream tape T.
Subsequently, by driving the servo motors 25A and 25C, the left and right paper feed claws 41A and 41B (paper feed claw units A and C) are moved to the vicinity of the left and right ends of the paper bundle. This movement is restricted by a mechanical stopper (not shown).
After the movement of the left and right paper feed claws A and C is completed, in the left paper feed claw unit A, the lower paper feed claws 41B are raised by the operation of the air cylinders 46 and 45, while the upper paper feed claws 41A are lowered. As a result, the sheet bundle to be fed is gripped by the upper and lower sheet feeding claws 41A and 41B. At this time, the separation claw 31 is lowered by the operation of the air cylinder 35 and presses the lower paper bundle from the upper side. The same operation is performed at the same time in the right sheet feeding claw unit C.

  The lower support frames 44A and 44B are moved by driving the electric slide bases 43A and 43B in a state where the sheet bundle to be fed is held between the upper and lower sheet feeding claws 41A, 41B, 42A and 42B. As a result, the left and right sheet feeding claw units A and C are moved to the packaging machine side, and the sheet bundle to be fed is fed. At this time, an air layer is formed between the paper bundle to be fed and the lower paper bundle by air from the air blowing holes 31b and 31c of the separation claw 31, and the air layer is between them. Since it is blown in an oblique direction so as to be formed over the whole, and the lower paper bundle is pressed downward by the separation claw 31, the paper feed object is fed by the paper feed claws 41A, 41B, 42A, 42B. The paper in the lower stack will not move or be damaged.

  After completion of the paper feeding operation, the separation claw insertion unit B and the paper feeding claw units A and C are returned to the standby position.

  The same operation as described above is repeated, and the sheet feeding operation for each sheet bundle to be fed is sequentially performed.

The embodiment described above can be modified as follows.
(i) A configuration in which the guide direction of the electric slide bases 43A and 43B by the guide rail 44b is tilted upward in the paper feeding direction so that the position of the guide rail 44b becomes higher toward the packaging machine side. In this way, the distance between the paper bundle to be fed and the lower paper bundle increases as the packaging machine is closer, so the paper in the lower paper bundle may move or be damaged. This is more effective in avoiding the problem.

  (ii) In the above embodiment, the size of the opening S is adjusted by adjusting the winding force for winding the ream tape T by the torque motor 56 in two stages. It is also possible to enlarge the opening S.

  (iii) In the above embodiment, not only the lower paper feed claw but also the upper paper feed claw (auxiliary paper feed claw) is used to feed the paper bundle to be fed up and down with the upper and lower paper feed claws to the front side. However, if the lower paper feed claw is sufficiently large and the paper feed target paper bundle can be fed only by the lower paper feed claw, the upper paper feed claw (auxiliary paper feed claw) Can be omitted.

  (iv) In the above-described embodiment, the separation claw unit is disposed at the center of the rear side of the paper bundle. The side separation claw unit B ′ having the same configuration including the tape pressing plate 32 ′ is further provided so that the continuous ream tape can be used even when a part thereof is folded and inserted. It is also possible to arrange on the rear side of either side of the bundle (see the dashed line in FIGS. 1 and 2 and FIG. 9). In this case, the separation claw 31 'does not have to be provided with an air passage, but an air passage that is inclined toward the rear end side of the paper bundle with respect to the paper feeding direction by the paper feeding claws 41A and 42A can also be provided.

  In this case, of the pair of lower paper feed claws 41B and 42B, the lower paper feed claw 41B on the side away from the side separation claw unit B ′ is the lower paper feed claw 42B on the separation claw unit side from the fixed position. Is configured to be movable in the left-right direction S1 to a position adjacent to (see FIG. 9).

  Further, the separation claw 31 ′ of the side separation claw unit B 7 is movable in the front-rear direction S 2, and the separation claw 31 ′ is in the opening S formed on the side of the paper bundle in the same manner as described above. After entering, the opening S is expanded and moved to the rear end side of the paper bundle in the same manner as in the case of the separation claw 31, so that the paper supply target paper bundle P1 and the lower side of the paper supply target paper bundle P1 are located on the rear end side of the paper bundle. The paper bundle P2 is separated, and a gap large enough to allow the two lower paper feed claws 41B and 42B to enter is formed therebetween. In this way, after the sheet bundle P1 to be fed and the lower sheet bundle P2 are separated and a sufficiently large gap is formed between them, the lower sheet feeding claws 41B in two adjacent states are formed. As 42B moves forward and enters the gap, the work by the separation claw 31 'is transferred to the lower lower side paper feeding claws 41B and 42B.

  Next, the lower paper feed claw 41B moves away from the lower paper feed claw 42B and returns to its fixed position, and the rear separation claw 31 enters the gap between the lower paper feed claws 41B and 42B, and the side After the separation claw 31 ′ of the part is retracted and removed from the paper bundle, the paper feeding operation by the two paper feeding claws 41B and 42B is performed as described above. During this paper feeding operation, the separation claw 31 descends in the same manner as in the above embodiment, and presses the lower paper bundle P2.

It is a schematic front view which shows one Embodiment of the paper bundle feeding apparatus which concerns on this invention. It is the same schematic plan view. It is explanatory drawing which shows the relationship between a paper feeding nail | claw unit on either side, and a separation claw unit. It is a side view which shows schematic structure of a separation nail | claw unit. (A), (b), and (c) are the top view, side view, and back view of a separation nail, respectively. It is a side view of the left paper-feeding claw unit. FIGS. 9A and 9B are a plan view and a rear view, respectively, showing the left paper feeding claw. It is explanatory drawing which shows operation | movement of a separation nail | claw. It is a schematic plan view which shows other embodiment containing a side part separation nail | claw unit.

Explanation of symbols

P1 Intake target paper bundle P2 Lower paper bundle A, C Paper feed claw unit B Separation claw unit T Ream tape S Opening 1 Paper bundle feeder 2 Support frame 2
31 Separation claw 31a Tip portion 31b, 31c Air blowing hole 41A, 42A Upper sheet feeding claw (auxiliary sheet feeding claw)
41B, 42B Lower feed claw 43A, 43B Electric slide base 44b Guide rail

Claims (5)

A ream tape continuous every predetermined number is inserted into the rear side of the paper bundle formed by laminating a large number of papers, and a part of the ream tape is folded and inserted. An opening is formed between a paper bundle to be fed, which is a predetermined number of paper bundles, and the remaining paper bundle positioned below the paper bundle, and a separation claw is inserted into the opening, and both left and right sides of the separation claw A pair of left and right paper feeding claws are inserted into the separation claw, and air is blown forward from the air blowing hole of the separation claw to the paper feeding direction by the paper feeding claws, and the paper to be fed is fed by the pair of left and right paper feeding claws. A paper bundle feeding device for feeding a bundle forward,
A support frame;
A separation claw unit that is supported so as to be movable in the left-right direction with respect to the support frame, and that extends the opening by inserting the separation claw into the opening.
A pair of paper feed claws for inserting the pair of left and right paper feed claws supported on the support frame so as to be movable in the left-right direction and disposed on both sides of the separation claws into the openings on both sides of the separation claws. With a unit,
One or a plurality of air blowing holes for blowing air in a direction inclined with respect to the sheet feeding direction by the sheet feeding nail in a plan view in a state where the separation nail is inserted into the opening at the distal end portion of the separation nail Formed ,
The paper feed claw unit has a guide rail for guiding the movement of the paper feed claw in the paper feed direction, and the guide rail is inclined upward in the paper feed direction . A ream tape continuous every predetermined number is inserted into the rear side of the paper bundle formed by laminating a large number of papers, and a part of the ream tape is folded and inserted. An opening is formed between a paper bundle to be fed, which is a predetermined number of paper bundles, and the remaining paper bundle positioned below the paper bundle, and a separation claw is inserted into the opening, and both left and right sides of the separation claw A pair of left and right paper feeding claws are inserted into the separation claw, and air is blown forward from the air blowing hole of the separation claw to the paper feeding direction by the paper feeding claws, and the paper to be fed is fed by the pair of left and right paper feeding claws. A paper bundle feeding device for feeding a bundle forward,
A support frame;
A separation claw unit that is supported so as to be movable in the left-right direction with respect to the support frame, and that extends the opening by inserting the separation claw into the opening.
A pair of paper feed claws for inserting the pair of left and right paper feed claws supported on the support frame so as to be movable in the left-right direction and disposed on both sides of the separation claws into the openings on both sides of the separation claws. With a unit,
One or a plurality of air blowing holes for blowing air in a direction inclined with respect to the sheet feeding direction by the sheet feeding nail in a plan view in a state where the separation nail is inserted into the opening at the distal end portion of the separation nail Formed,
Both or one of the separation claw and the paper feeding claw is covered with a protective material in a state where air can be blown out . The separating claw unit, while sending the feed target sheet bundle, according to claim 1, characterized in that an actuator for pressing the paper bundle of the lower by the separation claw moving the separation pawl downwardly or paper bundle feeding apparatus according to 2. The sheet feeding claw according to any one of claims 1 to 3 , wherein the sheet feeding claw has a curved outer end and a plurality of air passages formed in parallel so as to open to the curved portion. apparatus. The paper bundle feeding device according to claim 4, wherein the pressure of the air supplied to the air passage is adjustable according to paper quality.

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