JP2005074810A - Stencil recovering container used for stencil process printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stencil recovering container, used for a stencil process printing machine, which is capable of certainly recovering a stencil accommodated in a container main body without being left over, when the stencil recovering container is removed from the stencil process printing machine. <P>SOLUTION: In this stencil recovering container 51, a movable clamping arm 56 which constitutes a clamping mechanism 54, is rotatably supported at a base end part, on the upper part of the container main body 52 of the container 51 fitted removably from a stencil recovery position P set in an accommodating case 41 of the stencil process printing machine. Thus the movable clamping arm 56 is always retained at an unclamping position by a leaf spring 58. On the other hand, a fixed clamping member 59 is installed correspondingly to the movable clamping arm 56 at the inner part of a bottom plate 52d of the container main body 52. Under this constitution, a stencil 14 recovered between the fixed clamping member 59 and the tip part of the movable clamping arm 56 can be clamped by operating an operating member 57. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a base paper collection container for use in a stencil printing machine for printing on paper using stencil base paper.

  In general, in this type of stencil printing machine, a printing drum is rotatably supported by a frame, and a stencil sheet having holes of a predetermined printing pattern is wound around the outer periphery of the printing drum. Then, while the printing drum is rotated, the paper is fed to the outer periphery thereof, and ink is supplied from the inside of the printing drum through the holes of the stencil sheet to print a predetermined printing pattern on the paper. It has become so.

  In the stencil printing machine having such a configuration, when printing of a different printing pattern is performed after the printing of a predetermined printing pattern is completed by the stencil paper wound and mounted on the printing drum, it is used on the printing drum. The used stencil sheet is separated from the drum and then collected by a stencil sheet collecting device, and a new stencil sheet is mounted on the printing drum.

A conventional base paper collecting apparatus accommodates a base paper collecting container so as to be removable at a base paper collecting position provided in a frame of a printing press. The frame of the printing machine is provided with a base paper delivery mechanism for delivering the used stencil base paper from the printing drum to the base paper collection container. Further, a pressing member is provided on the frame side of the printing machine to compress the base paper accommodated in the base paper collection container from above and suppress the lifting.
(See Patent Document 1)
JP2003-011480

  However, in the conventional base paper collection container, the base paper existing inside the container cannot be clamped when the base paper in the container is full, and therefore the process of removing the base paper collection container from the stencil printing machine. Thus, there is a possibility that the base paper on the inner back side remains on the exit side of the base paper delivery mechanism. In order to surely prevent the remaining of the base paper, it is necessary to extend the outlet side of the base paper delivery mechanism to the base paper collection container side, and there is a problem that the base paper delivery mechanism becomes a complicated belt conveyor system and increases in size. is there.

  According to the present invention, when removing a base paper collection container from a stencil printing machine, the base paper stored in the container body can be reliably collected without leaving, and the base paper delivery mechanism can be simplified to reduce the size. An object of the present invention is to provide a base paper collecting container for use in a stencil printing machine.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a container main body that is detachably mounted at a base paper recovery position for recovering used stencil base paper removed from the outer peripheral surface of a printing drum of a stencil printing machine. On the other hand, the gist of the present invention is to provide a clamping mechanism for clamping the inner stencil sheet of the collected full stencil sheet.

  According to a second aspect of the present invention, in the first aspect, a switching operation member for switching the movable clamp member of the clamp mechanism between the unclamping position and the clamping position is provided on the upper portion of the front side plate of the container body. The gist of the present invention is that a fixed clamp member is provided in the inner back portion of the container body in correspondence with the movable clamp member.

  According to a third aspect of the present invention, in the second aspect, a base end portion of the movable clamp member is supported on an upper portion of the front side plate of the container body so as to be capable of reciprocating in the vertical direction. The switching operation member is provided at an end portion, and a biasing member for constantly biasing the movable clamp member to the unclamping position is interposed between the switching operation member and the front side plate. This is the gist.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, a fixed clamp member is provided in the vicinity of the rear plate of the container body so as to be elastically deformable in correspondence with the movable clamp member. It is the gist.

  The gist of a fifth aspect of the present invention is that, in the third or fourth aspect, a locking portion directed downward is formed at a tip portion of the movable clamp member.

  According to the present invention, the container main body is provided with a clamp mechanism for clamping the stencil paper on the inner back side of the full stencil paper collected, so when removing the base paper collection container from the stencil printing machine, The stencil sheet accommodated in the container body can be reliably collected without leaving. In addition, since it is not necessary to transfer the stencil sheet to the inner part of the container body by the base paper delivery mechanism, the base paper delivery mechanism can be simplified and miniaturized.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 6 is a side sectional view showing an outline of the stencil printing machine. A printing drum unit 12 is detachably attached to the frame 11 of the stencil printing machine, and a printing drum 13 is rotatably attached to the printing drum unit 12. A stencil sheet 14 is wound around the outer periphery of the printing drum 13, and holes of a predetermined printing pattern are formed on the stencil sheet 14. The printing drum 13 is provided with a base paper clamping mechanism 15 and a base paper jumping mechanism (not shown) which will be described in detail later.

  As the stencil sheet 14, a heat-sensitive stencil sheet having a polymerization structure of Japanese paper and a resin film is used. Then, by printing a predetermined printing pattern on the heat-sensitive stencil sheet, the resin film is melted and only the Japanese paper remains, and holes corresponding to the predetermined printing pattern are formed.

  An ink tank (not shown) is detachably disposed in the printing drum unit 12 and contains a predetermined color of printing ink. The ink in the ink tank is supplied into the printing drum 13 by a pressure of air through a supply pipe (not shown).

  A press roller 18 is supported on the frame 11 so as to be able to rotate and tilt so as to be pressed toward the outer peripheral surface of the printing drum 13 and perform contact and separation operations. An ink roller 19 is rotatably disposed in the printing drum 13 so as to correspond to the press roller 18. A paper feed table 20 is mounted at the rear of the frame 11, and sheets 21 of a predetermined size are stacked on the upper surface thereof. A paper feed roller 22 is disposed on the frame 11 so as to correspond to the paper feed table 20. Further, a paper separating member 24 is provided so as to be pressed toward the paper feed roller 22 with a constant pressure.

  Accordingly, the sheet 21 on the sheet feeding table 20 is fed one by one by the rotation of the sheet feeding roller 22 and the sheet separating member 24, and is supplied between the printing drum 13 and the press roller 18 via the feeding roller 23. At this time, the press roller 18 is also rotated by the rotation of the printing drum 13. Ink is supplied onto the paper 21 from the inside of the printing drum 13 through the holes of the stencil sheet 14, and a predetermined printing pattern is printed on the paper 21.

  A paper discharge tray 25 is disposed at the front lower portion of the frame 11. Then, the paper 21 printed between the printing drum 13 and the press roller 18 is discharged onto the paper discharge tray 25 via the paper discharge roller 26, and is received and held in a stacked state. A base paper supply mechanism 31 for supplying the stencil base paper 14 to the base paper clamp mechanism 15 of the printing drum 13 is mounted in the vicinity of the printing drum unit 12. Further, a base paper collecting device 32 for collecting the used stencil base paper 14 is mounted in the vicinity of the printing drum unit 12.

  The base paper supply mechanism 31 includes a base paper roll 33 around which a new stencil base paper 14 is wound, a thermal head 34 for printing a predetermined printing pattern on the stencil base paper 14, and a feed for feeding the stencil base paper 14 to the outer periphery of the printing drum 13. A roller 35 and a cutter 36 for cutting the stencil sheet 14 into a predetermined length are provided.

  The base paper recovery device 32 will be described. A storage case 41 for removably storing the base paper recovery container 51 at the base paper recovery position P is fixed at a predetermined position of the frame 11. As shown in FIG. 4, the housing case 41 is integrally formed at the upper side at the inner side of the bottom plate 41c, side plates 41a and 41b positioned on the left and right sides, a bottom plate 41c that integrally connects lower end edges of the side plates 41a and 41b. And a position restricting piece 41d of the base paper collecting container 51 that is bent in a straight line. A shielding plate 42 is installed horizontally between the side plates 41a and 41b. The shielding plate 42 includes an upper horizontal plate 42a, a lower horizontal plate 42b, an inclined plate 42c connecting the upper horizontal plate 42a and the lower horizontal plate 42b, and a reinforcing rib 42d.

  A drive shaft 43 is installed horizontally between the side plates 41a and 41b, and a drive roller 44 is supported at a plurality of locations on the drive shaft 43 and is rotated by a motor (not shown). A space 42e for accommodating the drive roller 44 is formed in the lower horizontal plate 42b of the shielding plate 42 as shown in FIG. A guide shaft 45 is horizontally installed between the side plates 41a and 41b, and a driven roller 46 is supported by the guide shaft 45. The used stencil sheet 14 is connected to the drive roller 44 on the printing drum 13 side. To the base paper collecting container 51.

  In this embodiment, a base paper delivery mechanism 47 for delivering the used stencil paper 14 removed from the printing drum 13 by the drive shaft 43, the drive roller 44, the guide shaft 45, the driven roller 46 and the like into the base paper collection container 51. Is configured.

Next, the base paper collection container 51 will be described.
As shown in FIG. 5, the container main body 52 of the base paper collecting container 51 includes a front plate 52a, side plates 52b and 52c integrally formed on the left and right side portions of the front plate 52a, and the front plate 52a and the side plates 52b and 52c. A bottom plate 52d (see FIG. 1) formed integrally with the lower end edge, and a rear side plate 52e formed integrally with the rear end edges of the side plates 52b and 52c and the bottom plate 52d.

  A handle 53 is integrally formed at the center of the front surface of the front plate 52a. The container body 52 is provided with a clamp mechanism 54 for clamping the base paper collected in the container body 52. The clamp mechanism 54 will be described. A pair of left and right bearing plates 55 are integrally formed so as to be positioned immediately above the handle portion 53 with respect to the front surface of the front side plate 52a. A bearing recess 55a is formed at the upper end portion of the bearing plate 55, and a movable clamp arm 56 as a movable clamp member is supported on both bearing recesses 55a so as to be rotatable in the vertical direction. The movable clamp arm 56 is bent and formed into a plane U shape by a linear material as shown in FIG. And the base end connection part 56c of a left-right paired arm part 56a, 56b is engaged with the said bearing recessed part 55a so that rotation is possible. A locking portion 56d directed downward is curvedly formed at the tip of the arm portions 56a and 56b. A cutout recess 52f for allowing the arm portions 56a and 56b to enter is formed at the upper end edge of the front side plate 52a.

  An operating member 57 is mounted on the arm portions 56a and 56b. The operation member 57 includes an operation plate 57a, a bracket 57b integrally formed on the lower surface of the operation plate 57a, and engagement grooves 57c formed on both left and right end surfaces of the bracket 57b and engaging the arm portions 56a and 56b. And. An upper end edge of a plate spring 58 as an urging member is embedded and fixed to a lower end portion of the bracket 57b, and the lower end portion of the plate spring 58 is an upper inner surface of the front plate 52a of the container body 52 as shown in FIG. Is touching. In this contact state, the arm portions 56a and 56b are held at the unclamping position in the horizontal state as shown in FIG.

In this embodiment, the operation member 57 and the leaf spring 58 constitute a switching operation member for switching the movable clamp arm 56 between the unclamping position and the clamping position.
As shown in FIG. 1, a base end portion of a fixed clamp member 59 is attached to the bottom plate 52 d of the container main body 52 corresponding to the movable clamp arm 56. Between the upper end edge of the fixed clamp member 59 and the lower end edge of the locking portion 56d of the movable clamp arm 56, the stencil sheet 14 used inside the container body 52 from the drive and driven rollers 44 and 46 is used. A predetermined interval is formed so as to be able to guide.

  The base paper collection container 51 is stored in the base paper recovery position P inside the storage case 41 in a state where the rear side plate 52e of the container main body 52 is position-controlled by the position control piece 41d inside the bottom plate 41c. ing. Although this storage state is not shown, it is held by a locking mechanism such as a permanent magnet. The inclined plate 42c of the shielding plate 42 is formed with two slits 42f for allowing the tip of the movable clamp arm 56 to enter.

Next, the operation of the stencil printing machine configured as described above will be described.
FIG. 1 shows a state where the base paper collection container 51 is pulled away from the base paper collection position P of the storage case 41. In this state, the base paper collection container 51 is moved to the right, and the container main body 52 is stored in the base paper collection position P as shown in FIGS.

  When the stencil printing machine is started in this state, the printing drum 13 is rotated and the ink roller 19 is rotated. Then, the paper 21 in the paper feed tray 20 is fed between the printing drum 13 and the press roller 18 by the rotation of the paper feed roller 22, and ink of a predetermined color in an ink tank (not shown) is supplied to the ink roller. After being supplied to 19, the paper is supplied onto the paper 21 through the holes of the stencil sheet 14. As a result, a predetermined print pattern is printed on the paper 21, and the printed paper 21 is discharged onto the paper discharge tray 25.

  The used stencil sheet 14 on the printing drum 13 is desorbed and replaced with a new stencil sheet 14. This exchange operation is performed as follows. With the base paper clamping mechanism 15 on the printing drum 13 stopped at a position corresponding to the driving and driven rollers 44 and 46 as shown in FIG. 2, the base paper clamping mechanism 15 releases the base paper clamp. Next, the leading end of the base paper is supplied between the driving roller 44 and the driven roller 46 in a state where the leading end of the base paper is flipped up by a flip-up mechanism (not shown), and the rotation of the printing drum 13 and the rotation of the driving roller 44 are performed. Thus, the used stencil sheet 14 is supplied into the container main body 52. Thereafter, a new stencil sheet 14 is supplied to the printing drum unit 12 by the base paper supply mechanism 31.

  When the above replacement operation of the base paper is repeatedly performed, the used stencil base paper 14 in the container main body 52 will eventually become full. In this full state, when the operation member 57 is operated with a finger in FIG. 2 and the movable clamp arm 56 is pushed down against the urging force of the leaf spring 58, the movable clamp arm 56 is centered on the proximal end connecting portion 56c. 3, the locking portion 56d is pressed toward the upper end edge of the fixed clamp member 59. As a result, the stencil sheet 14 located in the innermost part accommodated in the container main body 52 is held. In this state, when the container main body 52 of the base paper recovery container 51 is pulled out from the base paper recovery position P, all the stencil base paper 14 is taken out.

According to the base paper collection container used in the stencil printing machine of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the movable clamp arm 56 of the clamp mechanism 54 is rotatably attached to the upper end portion of the front side plate 52a of the container main body 52 that constitutes the base paper collection container 51, and the fixed clamp is fixed inside the bottom plate 52d. A member 59 is provided. Since the stencil sheet 14 is clamped between the upper end edge of the fixed clamp member 59 and the lower end edge of the locking portion 56d of the movable clamp arm 56, all the stencil sheet sheets 14 accommodated in the container main body 52 are included. Can be reliably removed from the base paper collection position P.

  (2) In the above embodiment, as shown in FIG. 2, the distal end portion of the movable clamp arm 56 and the distal end portion of the fixed clamp member 59 are inserted between the driving and driven rollers 44 and 46 constituting the base paper delivery mechanism 47. Therefore, the stencil sheet 14 which is about to protrude backward from the inside of the container main body 52 can be reliably held. Further, since it is not necessary to dispose the base paper delivery mechanism 47 to the inside of the container main body 52, it can be constituted by only a pair of driving and driven rollers 44 and 46 as in the embodiment, and the size can be reduced. it can.

  (3) In the above embodiment, the movable clamp arm 56 is always held at the unclamped position by the leaf spring 58, and the movable clamp arm 56 is rotated by operating the operation member 57 when the container body 52 is taken out. Thus, the stencil sheet 14 can be clamped with one touch.

  (4) In the above embodiment, since the fixed clamp member 59 is cantilevered so as to be elastically deformable, the stencil sheet 14 can be reliably clamped when the stencil sheet 14 is clamped by the movable clamp arm 56 and the fixed clamp member 59. .

In addition, you may change the said embodiment as follows.
Although not shown, a locking mechanism for holding the movable clamp arm 56 in the unclamping position may be provided instead of the leaf spring 58.

  Although not shown, the fixed clamp member 59 may be formed integrally with the upper end portion of the rear side plate 52e.

Sectional drawing which shows the state by which the base paper collection | recovery container of the base paper collection | recovery apparatus used for a stencil printing machine was pulled out from the base paper collection | recovery position of a storage case. Sectional drawing which shows the state in which the base paper collection | recovery container was accommodated in the accommodation space of an accommodation case. Sectional drawing which shows the state which clamped the stencil sheet | seat of the inner back | inner side in the container main body with a stencil sheet full. Sectional drawing which shows the state in which the base paper collection | recovery container was accommodated in the accommodation space of an accommodation case. The perspective view which shows the state which removed the operation member of the base paper collection | recovery container. FIG. 3 is a schematic cross-sectional side view showing the entire printing press.

Explanation of symbols

  P: base paper collection position, 13: printing drum, 14: stencil paper, 52: container main body, 52a: front side plate, 54 ... clamp mechanism, 56d ... locking portion, 59 ... fixed clamp member.

Claims (5)

The stencil sheet on the innermost side of the full stencil sheet that has been collected with respect to the container body that is removably attached to the stencil sheet recovery position for collecting the used stencil sheet removed from the outer peripheral surface of the printing drum of the stencil printing machine A base paper collection container used in a stencil printing machine provided with a clamping mechanism for clamping the paper. In Claim 1, the switching operation member for switching the movable clamp member of the above-mentioned clamp mechanism between an unclamp position and a clamp position is provided in the upper part of the front side board of the above-mentioned container main part, and the inner back part of a container main part Is a base paper collection container used in a stencil printing machine provided with a fixed clamp member corresponding to the movable clamp member. In Claim 2, the base end part of the movable clamp member is supported by the upper part of the front side board of the container main body so that reciprocating rotation of the up-and-down direction is possible, and the switching operation member is on the base end part of the movable clamp member. A stencil collecting container for use in a stencil printing machine, provided with a biasing member interposed between the switching operation member and the front plate for constantly biasing the movable clamp member to an unclamping position. The base paper used for the stencil printing machine according to any one of claims 1 to 3, wherein a fixed clamp member is provided in an elastically deformable manner in the vicinity of the rear plate of the container main body corresponding to the movable clamp member. Collection container. The base paper collection container used in a stencil printing machine according to claim 3 or 4, wherein a locking portion directed downward is formed at a tip of the movable clamp member.

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