JP2005349629A - Equipment and method for mounting blanket of rotary press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a printing hindrance and to improve the quality of printed matter by mounting a blanket in the state wherein the whole of the blanket is brought into close contact with the peripheral surface of a rubber cylinder. <P>SOLUTION: One metal sleeve 39 of the blanket 38 is inserted into the groove 40 of a notch 27 of the rubber impression cylinder 15 and a bolt 41 is tightened so that a gripper support lever 34 may rotate counterclockwise. In this state, the other metal sleeve of the blanket 38 is held by a winding bar and the blanket 38 is pulled by rotating the winding bar. Then, the engagement of a spacer 47 with the base of a second nut 43 is canceled and the bolt 41 is tightened so that the gripper support lever 34 may be rotated counterclockwise. A gripper support bar 35 is brought into pressure contact with a wall surface 27a by the medium of the end part 38a of the blanket 38 contacting oppositely with the wall surface and the metal sleeve 39 is pushed into the groove 40 by the gripper support bar 35. On the occasion, the blanket 38 is pulled by the amount of projection of a part of the metal base 39 from the groove 40. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a blanket mounting device and a mounting method for mounting a blanket on a peripheral surface of a rubber cylinder in a rotary printing press.

2. Description of the Related Art A conventional blanket mounting device for a rotary printing press includes two blanket holding devices in a notch provided on the outer periphery of a rubber impression cylinder. One blanket holding device has a groove provided on the blanket holding surface of the notch into which the base at one end of the blanket is inserted, and a base in the groove by pressing the blanket holding surface of the notch through the end of the blanket. The other blanket holding device is composed of a winding rod that closely contacts the peripheral surface of the rubber impression cylinder by rotating the mouthpiece at the other end of the blanket (for example, , See Patent Document 1). In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
Japanese Utility Model Publication No. 60-22343 (page 11, line 16 to page 13, line 10, FIGS. 2 and 4)

  In the above-described conventional rotary printing press blanket mounting device, since the blanket is stretched only by the winding rod that is the other blanket holding device, it is difficult to completely adhere the entire blanket to the peripheral surface of the rubber impression cylinder. Met. In particular, since the end opposite to the end that is held by the winding rod is bent at a right angle, when this end is pressed against the wall of the notch with one blanket holding device, the blanket It is easy to be mounted in a state in which the corner portion formed by bending due to the elastic force floats from the peripheral surface of the rubber impression cylinder. When one end is attached in this state, it is difficult to bring the vicinity of the corner of one end into close contact with the peripheral surface of the rubber impression cylinder even if the other end is pulled by a winding rod. For this reason, there is a possibility that a printing failure may occur, and there is a problem that the quality of the printed matter is lowered.

  The present invention has been made in view of the above-described conventional problems. The object of the present invention is to prevent the occurrence of printing trouble by attaching the entire blanket in close contact with the peripheral surface of the rubber impression cylinder. It is to improve the quality of printed matter.

  In order to achieve this object, the invention according to claim 1 includes two blanket holding devices each holding both ends of the blanket, and one blanket holding device is provided on the blanket holding surface of the trunk and is attached to one end of the blanket. A groove into which the fixed base is inserted, and a pressing member that presses the base inserted into the groove into the groove and presses the blanket against the blanket holding surface, and the other holding device has the other end of the blanket. In a blanket mounting device of a rotary printing press provided with a pulling means, in the state where the other end of the blanket is pulled by the pulling means, the base part of which protrudes from the groove is pushed into the groove by the pushing member. , Press the blanket against the blanket holding surface Pull one end of the blanket by the.

  According to a second aspect of the present invention, in the first aspect of the present invention, the base that is pushed into the groove by the pushing member rotates around a corner that is in contact with the wall of the groove.

  The invention according to claim 3 is provided with two blanket holding devices each holding both ends of the blanket, and one blanket holding device is a groove provided on the blanket holding surface of the trunk and into which a base fixed to one end of the blanket is inserted. And a pressing member that presses the base inserted into the groove into the groove and presses the blanket against the blanket holding surface, and the other holding device is provided with tension means for pulling the other end of the blanket. In a blanket mounting device of a printing press, the first member for pushing the pressing member into the groove and pressing the blanket against the blanket holding surface and the base can be removed from the groove or the base into the groove. Movably supported between the second position to allow attachment, A third pushing member that is capable of locking a base inserted into the groove between the first position and the second position and pulling the other end of the blanket by the pulling means. Positioning means for positioning at a position is provided.

  According to a fourth aspect of the present invention, in the invention according to the third aspect, the positioning means moves the pushing member back and forth to the first position by moving the claw base lever attached with the pushing member forward and backward. A bolt that is moved to each of the second position and the third position, a nut that is screwed to the bolt, and a swingable support that is supported by the claw base lever to engage the nut. The spacer is configured by the spacer positioned at the third position, and biasing means for biasing the spacer in a direction to engage with the nut.

  According to a fifth aspect of the present invention, a base fixed to one end of a blanket is inserted into a groove formed in a blanket holding surface of a notch provided in an outer peripheral portion of the trunk, and the groove is formed by a pushing member spaced from the blanket holding surface After locking the base inserted into the blanket, and then pulling the other end of the blanket in addition to the blanket holding device provided at the other end of the blanket, the base is pushed into the groove by the pushing member. Is pressed against the blanket holding surface.

  According to the present invention, since the blanket is mounted on the circumferential surface of the cylinder with both ends of the blanket being pulled, the entire blanket is mounted in close contact with the circumferential surface of the cylinder, thereby preventing the occurrence of printing failures. The quality of printed matter can be improved.

  According to the invention which concerns on Claim 2, when a nozzle | cap | die is pushed in in a groove | channel by a pushing member, a nozzle | cap | die rotates centering on a corner | angular part, Therefore A blanket can be pulled reliably.

  According to the third aspect of the present invention, the third position of the claw base lever is accurately and automatically determined by the positioning means, so that the blanket mounting operation can be performed reliably and the blanket mounting time is shortened. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a part of a rotary printing press to which a blanket mounting device according to the present invention is applied, FIG. 2 is a cross-sectional view showing the main part of the rubber impression cylinder, and FIG. 4 and 4 show the state in which the base can be attached / detached in the same cross-sectional view of the main part, and FIG. 5 shows the cross-sectional view of the main part in the same way, and the claw separated from the end of the blanket that is in contact with the blanket holding surface. The state which the nozzle | cap | die was latched by the base bar and the upper surface of the groove | channel is shown.

  1, a sheet-fed rotary printing press denoted as a whole by reference numeral 1 includes a paper feed unit (not shown), a front surface printing unit 2 that prints the surface of the fed paper, and a back surface printing unit that prints the back surface of the paper. 3, a coating unit 4 that coats both sides of the paper, and a paper discharge unit 5 that discharges the coated paper. The front surface printing unit 2 has a double-diameter impression cylinder 10a provided with a nail that holds paper on its peripheral surface, a rubber cylinder 11a that contacts the upper part of the impression cylinder 10a, and a plate cylinder 12a that contacts the upper part of the rubber cylinder 11a. And an ink portion 13a for supplying ink to the plate cylinder 12a and a water supply portion 14a for supplying water. The back surface printing unit 3 includes a double-diameter impression cylinder 10b provided with a nail that holds paper on the peripheral surface, a rubber cylinder 11b that contacts the lower part of the impression cylinder 10b, and a plate cylinder 12b that contacts the lower part of the rubber cylinder 11b. And an ink portion 13b for supplying ink to the plate cylinder 12b and a water supply portion 14b for supplying water.

  The coating unit 4 has a double-diameter rubber impression cylinder 15 provided with a nail that contacts the impression cylinder 10b of the back surface printing unit 3 and holds paper on the peripheral surface, and a first varnish coating that coats the back surface of the printed paper. It is constituted by means 16 and second varnish coating means 17 for coating the surface of the printed paper.

  The first varnish coating means 16 includes a first varnish film forming cylinder 19 that is in contact with the rubber impression cylinder 15 on the upstream side in the paper conveyance direction from the contact point between the rubber impression cylinder 15 and the impression cylinder 10b, and the first varnish. It comprises an anilox roller 20 in contact with the film forming cylinder 19 and a chamber coater 21 for supplying varnish to the anilox roller 20. Therefore, the varnish supplied from the chamber coater 21 to the anilox roller 20 is transferred to the peripheral surface of the rubber impression cylinder 15 via the first varnish film forming cylinder 19.

  The second varnish coating means 17 includes a rubber cylinder 22 that contacts the rubber cylinder 15 on the downstream side in the paper conveyance direction from a contact point between the rubber cylinder 15 and the pressure cylinder 10 b, and a second cylinder that contacts the rubber cylinder 22. The varnish film forming cylinder 23 includes an anilox roller 24 that contacts the second varnish film forming cylinder 23, and a chamber coater 25 that supplies varnish to the anilox roller 24. Therefore, the varnish supplied from the chamber coater 25 to the anilox roller 24 is transferred to the rubber cylinder 22 via the second varnish film forming cylinder 23, and printing passes through the contact point between the rubber cylinder 22 and the rubber impression cylinder 15. The coated paper surface is coated. When the paper passes through the contact point between the rubber cylinder 22 and the rubber impression cylinder 15, the rubber impression cylinder is transferred from the first varnish film forming cylinder 19 of the first varnish coating means 16 by the printing pressure of the rubber cylinder 22. The varnish transferred to the 15 peripheral surfaces is coated on the back side of the printed paper. The paper coated on both sides is transferred from the claw of the rubber impression cylinder 15 to the claw of the paper discharge chain 26, conveyed by the paper discharge chain 26, and dropped and stacked on a pile (not shown).

  Next, a blanket mounting device that is a feature of the present invention and is provided on the rubber impression cylinder 15 will be described with reference to FIGS. In FIG. 2, two notches 27 extending along the entire length of the cylinder are provided on the outer peripheral portion of the rubber impression cylinder 15 with a 180 ° phase shift in the circumferential direction. A paper holding claw device for holding paper and a blanket mounting device for mounting a blanket are provided. Both ends of the notch 27 are closed by a bearer 28 formed in the shape of a disk having an outer diameter serving as a reference diameter of the trunk, and a rotatable claw shaft 29 extending in the axial direction in the notch 27. And a non-rotatable lever shaft 30 are pivotally supported by the left and right bearers 28.

  A plurality of claw holders 31 are split and fixed in parallel in the axial direction on the claw shaft 29, and a claw 32 is fixed to each claw holder 31. On the lever shaft 30, a plurality of claw base levers 34 formed in a bifurcated shape are rotatably supported side by side in the axial direction, and one free end 34 a extends over substantially the entire length of the notch 27. A claw base bar 35 as a pushing member is fixed by bolts 36, and a plurality of claw bases 37 are fixed to the claw base bar 35 by bolts so as to correspond to the respective claws 32. A cam mechanism is provided at the shaft end of the claw shaft 29 to reciprocally rotate the claw shaft 29 by a predetermined angle in a clockwise or counterclockwise direction at a predetermined timing. The paper is held or released between the claw 32 and the claw base 37.

  Each member on the lever shaft 30 side of the paper gripping claw device configured in this way is shared by one blanket gripping device of the two blanket mounting devices. That is, a base 39 fixed to one end of a blanket 38 attached to the peripheral surface of the rubber impression cylinder 15 and formed to be approximately the same length as the notch 27 is provided on a wall surface 27 a as a blanket holding surface of the notch 27. The base 39 is removably inserted into the groove 40, and the base 39 is pressed against the wall surface 27 a of the notch 27 through the end 38 a of the blanket 38 by rotating the claw base lever 34. It is comprised so that it may push in in 40.

  What is indicated by reference numeral 41 as a whole is positioning means for positioning the claw base bar 35 in the first position to the third position as will be described later, and includes a bolt 42 and a third screw screwed into the bolt 42. A nut 43b, a spacer 47 for positioning the claw base bar 35 in the second position by engaging with the second nut 43b, and an urging force for biasing the spacer 47 in a direction to engage with the second nut 43b. It is constituted by a torsion coil spring 49 as a biasing means. The bolt 42 is screwed into the other free end 34 b of each claw base lever 34, and the tip thereof is pressed against the bottom surface 27 b of the notch 27 by a torsional elastic force of a torsion coil spring 45 described later. The first and second nuts 43a and 43b are screwed into the bolt 42, and the second nut 43b is unfastened by the first nut 43a and rotated to rotate the second nut 43b on the bolt 42. The position of the nut 43b can be adjusted, and the second nut 43b is fixed to the bolt 42 by tightening the first nut 43a with respect to the second nut 43b. The position adjustment of the second nut 43b is performed during manufacturing in order to correct manufacturing errors.

  As shown in FIG. 3, a collar 44 is fixed to a plurality of locations on the lever shaft 30, and one end of a torsion coil spring 45 wound on the lever shaft 30 is supported on the collar 44. The torsion coil spring 45 is hung on a claw base bar 35 fixed to the claw base lever 34 with the torsional elastic force accumulated, and the torsion spring 34 is applied to the claw base lever 34 by this torsional elastic force. Is provided with a rotational force in a direction in which the tip of the bolt 42 is pressed against the bottom surface 27 b of the notch 27, that is, in a direction in which the claw base bar 35 is separated from the wall surface 27 a of the notch 27.

  Therefore, when the bolt 42 is loosened in the direction of retracting from the claw base lever 34, the claw base bar 35 is rotated clockwise around the lever shaft 30 in FIG. The base bar 35 is separated from the wall surface 27a of the notch 27 as shown in FIG. On the other hand, when the bolt 42 is tightened in the direction to advance the claw base lever 34, the claw base lever 34 rotates counterclockwise about the lever shaft 30 against the torsional elastic force of the torsion coil spring 45, The claw base bar 35 pushes the base 39 into the groove 37 through the end 38 a of the blanket 38. 42a is a stopper pin planted on the front end side of the bolt 42, and the bolt 42 is loosened, and the torsion spring 34 rotates the claw base lever 34 about the lever shaft 30 in the clockwise direction. As a result, the lower end of the other free end 34b of the claw base lever 34 is engaged, and the rotation of the claw base lever 34 is stopped.

  As shown in FIG. 3, the spacer 47 is rotatably supported via a screw 48 whose one end is screwed onto the other free end 34 b of the claw base lever 34. The spacer 47 has one end hooked on a pin 47 a fixed to the spacer 47 and the other end hooked by a torsional elastic force of a torsion coil spring 49 hooked on a pin 34 c fixed to the claw base lever 34. Turning force is applied in the clockwise direction in the figure, that is, in the direction in which the other end engages with the peripheral surface of the second nut 43b as the center.

  2 is a blanket holding device for holding the other end of the blanket 38, and includes a winding rod 51 as a pulling means supported by the left and right bearers 28. The part is provided with a ratchet mechanism (not shown) that allows the winding rod 51 to rotate only in the counterclockwise direction in the figure by hooking the claws. A base 53 fixed to the other end of the blanket 38 is engaged with the groove 52 of the winding rod 51, and separation from the groove 52 is restricted by a pressing member 54. Reference numeral 55 denotes a support pin that is pivotally supported around the axis within the winding rod 51. A holding member 54 is attached to one end, and the other end is shifted by 90 ° in the circumferential direction. Two engagement holes 55a and 55b are provided.

  The ball plunger 56 is configured to selectively engage with the engagement holes 55a and 55b, and the support pin 55 is rotated around the axis by an operation portion 57 formed in a disc shape. As shown in the drawing, by engaging the engagement hole 55 b with the ball plunger 56, the pressing member 54 regulates the separation of the base 53 from the groove 52. On the other hand, the support pin 55 is rotated around the axis by the operation portion 57 and the engagement hole 55 a is engaged with the ball plunger 56, so that the press by the press member 54 is released and the base 53 is removed from the groove 52. It becomes possible.

  In such a configuration, when the bolt 42 is tightened, the claw base lever 34 rotates counterclockwise about the lever shaft 30 against the torsional elastic force of the torsion coil spring 45 as shown in FIG. The upper end of the other free end 34b of the claw base lever 34 engages with the bottom surface of the second nut 43b, and the claw base bar 35 is pressed against the wall surface 27a of the notch 27 via the end 38a of the blanket 38. The The position of the claw base bar 35 in a state where the claw base bar 35 is pressed against the wall surface 27a via the end portion 38a of the blanket 38 is hereinafter referred to as a first position where the base 39 is pushed into the groove 40.

  On the other hand, the bolt 42 is loosened, and the claw base lever 34 is rotated clockwise around the lever shaft 30 by the torsional elastic force of the torsion coil spring 45. As shown in FIG. By engaging the lower end of the other free end portion 34 b with the stopper pin 42 a, the claw base bar 35 is separated from the wall surface 27 a of the notch 27 by a distance L. In this way, the position of the claw base bar 35 in which the claw base bar 35 is separated from the wall surface 27 a of the notch 27 by the distance L is hereinafter referred to as the base 39 being removable from the groove 40, or the base 39 is changed to the groove 40. This is referred to as a second position where attachment is possible.

  Further, in this second position, when the base 39 is inserted into the groove 40 and the bolt 42 is tightened, the claw base lever 34 rotates counterclockwise against the torsional spring force of the torsion coil spring 45, As shown in FIG. 5, when the spacer 47 is engaged with the bottom surface of the second nut 43b, the rotation of the claw base lever 34 is stopped. As described above, the spacer 47 is interposed between the bottom surface of the second nut 43 b and the free end portion 34 b of the claw base lever 34, so that the claw base bar 35 is in contact with the wall surface 27 a of the notch 27. Is spaced from the end portion 38a by a distance l. The base 39 inserted into the groove 40 is locked by the claw base bar 35 and the upper surface 40a of the groove 40 spaced from the end portion 38a of the blanket 38 in contact with the wall surface 27a, and the groove 40 of the base 39. Regulating withdrawal from In this way, the position of the nail base bar 35 that is spaced from the end 38a of the blanket 38 that is in contact with the wall surface 27a of the notch 27 by the interval l is hereinafter referred to as the upper surface 40a of the groove 40 and the nail base. This is referred to as a third position where the base 39 is locked by the bar 35. The third position is located between the first position and the second position described above, and in this third position, the base 39 has a length l from the end portion 38a of the blanket 38 that is in contact with the wall surface 27a. Only protruding.

  Next, a blanket replacement operation in the blanket mounting device of the rotary printing press configured as described above will be described. For convenience of explanation, it is described that the other end of the blanket 38 is pulled by the blanket holding device 50 provided in the same notch 27. However, since the rubber impression cylinder 15 has a double diameter, the rubber pressure is actually reduced. It is pulled by a blanket holding device 50 provided in another notch 27 provided in the trunk 15.

  First, the rubber impression cylinder 15 is rotated so that the cutout 27, which is a work surface, corresponds to the work space on the paper discharge device 5 side, and the wall surface 27a of the cutout 27 is brought into a substantially horizontal state. Thereafter, the claw shaft 29 is rotated by a cam mechanism (not shown) to open the claw 32 with respect to the claw base 37 as shown in FIG. Next, the bolt 42 is loosened, and the claw base lever 34 is twisted until the lower end of the other free end 34b of the claw base lever 34 engages with the stopper pin 42a. The claw base bar 35 is positioned at the second position by rotating clockwise as shown in the figure. At the second position of the claw base bar 35, the claw base bar 35 is separated from the wall surface 27a of the notch 27 by a distance L. Therefore, the base 39 is taken out from the groove 40, and as shown by a two-dot chain line, Remove from.

  In this way, by operating the operating portion 57 of the winding rod 51 in FIG. 2 and rotating the support pin 55 by 90 ° around the axis, the pressing of the other base 53 of the blanket 38 by the pressing member 54 is performed. The base 53 is removed from the groove 52, and the blanket 38 is removed from the waist surface.

  Next, a case where a new blanket 38 is attached will be described. In this case, one base 39 of the blanket 38 is inserted into the groove 40 from between the wall surface 27a of the notch 27 and the claw base bar 35 as shown in FIG. Next, by tightening the bolt 42, the claw base bar 35 rotates counterclockwise against the torsional elastic force of the torsion coil spring 45, and the spacer 47 becomes the second nut 43b as shown in FIG. The claw base bar 35 is positioned at a third position separated from the end portion 38a of the blanket 38 that is in contact with the wall surface 27a of the notch 27 by a distance l. In the third position, the base 39 is locked by the claw base bar 35 and the upper surface 40a of the groove 40, the separation of the base 39 from the groove 40 is restricted, and the base 39 is in contact with the wall surface 27a. The blanket 38 protrudes from the end 38a by a length l. Thus, by providing the spacer 47, the third position of the claw base lever 34 is determined accurately and automatically, so that the mounting operation of the blanket 38 can be performed reliably and the mounting time of the blanket 38 can be reduced. It can be shortened.

  In this state, the other base 53 of the blanket 38 is inserted into the groove 53 of the winding rod 51 as shown in FIG. 2, and the operation pin 57 is operated to rotate the support pin 55 by 90 °, thereby holding the pressing member. The base 53 is pressed by 54 and the separation from the groove 53 is restricted. Next, by rotating the winding rod 51 counterclockwise in the drawing while preventing reverse rotation by the ratchet mechanism, the blanket 38 is pulled and brought into close contact with the circumferential surface of the trunk.

  In this state, the spacer 47 engaged with the bottom surface of the second nut 43b is rotated counterclockwise in FIG. 3 against the torsional elastic force of the torsion coil spring 49, whereby the second The engagement with the nut 43b is released. By tightening the bolt 42, the claw base lever 34 is rotated counterclockwise in FIG. 5 about the lever shaft 30 against the torsional elastic force of the torsion coil spring 45, and the claw base bar 35 is used to turn the blanket 38. The end 38a is brought into pressure contact with the wall surface 27a of the notch 27, and the claw base bar 35 is positioned at the first position. When the claw base bar 35 is positioned from the third position to the first position and the base 39 is pushed into the groove 40, the base 39 is in contact with the wall surface 27a of the notch 27 at the third position. Since the end portion 38a protrudes from the wall surface 27a by a length l, when the base 39 is pushed into the groove 40 by the claw base bar 35, the base 39 abutting against the upper surface 40a of the groove 40 as shown in FIG. Since the base 39 rotates in the clockwise direction in the figure around the corner 39a, the vicinity of the corner of the blanket 38 can be reliably pulled. For this reason, the end of the blanket 38 on the base 39 side does not come into close contact with the circumferential surface of the trunk and does not float. Therefore, since the entire blanket 38 whose end portion on the side of the base 53 is already stretched by the winding rod 51 is in close contact with the peripheral surface of the rubber impression cylinder 15, it is possible to prevent the occurrence of printing trouble and improve the quality of the printed matter. .

  In the present embodiment, the gripping claw device for holding paper and the blanket holding device for holding both ends of the blanket are provided in the notch 27 of the rubber impression cylinder 15, and the base 39 inserted into the groove 40 is formed in the groove 40. Although the example which shared the member pushed into the nail | claw stand bar 35 of a nail | claw apparatus was demonstrated, it is applicable also to a rotary printing machine of the structure where only the blanket claw apparatus was provided in the notch. In addition, an example has been described in which the rubber impression cylinder 15 is a double diameter cylinder and two cutouts 27 are provided. However, a single cylinder having only one cutout 27 may be used. The both ends of the blanket are held by the provided blanket holding device. Moreover, although the sheet-fed rotary printing machine which prints a sheet is demonstrated, it is applicable also to the rotary printing machine which prints a web. Further, the third position of the claw base lever 34 is positioned by the spacer 47. However, when the positioning is not necessary, the spacer 47 is not necessarily required, and the claw base lever 34 is moved only by the bolt 42 as the holding means. You may make it hold | maintain in a position.

It is a side view which shows a part of rotary printing press to which the blanket mounting apparatus which concerns on this invention is applied. It is sectional drawing which shows the principal part of the rubber impression cylinder to which the blanket mounting apparatus which concerns on this invention is applied. FIG. 3 is a developed plan view taken along arrow III in FIG. 2. The state in which the base can be attached and detached is shown by a cross-sectional view of the main part of the rubber impression cylinder to which the blanket mounting device according to the present invention is applied. In the sectional view of the main part of the rubber impression cylinder to which the blanket mounting device according to the present invention is applied, the base is locked by the claw base bar spaced from the end of the blanket that is in contact with the blanket holding surface and the upper surface of the groove. Indicates the state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sheet-fed rotary printing machine, 15 ... Rubber impression cylinder, 27 ... Notch, 27a ... Wall surface (blanket holding surface), 30 ... Claw base axis, 32 ... Claw, 34 ... Claw base lever, 35 ... Claw base bar ( 37 ... claw base, 38 ... blanket, 39, 53 ... base, 40 ... groove, 41 ... positioning means, 42 ... bolt, 43a, 43b ... nut, 45, 49 ... torsion coil spring, 47 ... spacer, 50 ... Blanket holding device, 51 ... Winding rod (tensioning means).

Claims (5)

There are two blanket holding devices each holding both ends of the blanket, and one blanket holding device is inserted into the groove, which is provided on the blanket holding surface of the trunk and into which a base fixed to one end of the blanket is inserted. In a blanket mounting device for a rotary printing press, comprising a pressing member that presses a base into the groove and presses the blanket against the blanket holding surface, and provided with a pulling means for pulling the other end of the blanket to the other holding device.
While the other end of the blanket is pulled by the pulling means, the base part of which protrudes from the groove is pushed into the groove by the pushing member, and the blanket is pressed against the blanket holding surface. A blanket mounting device for a rotary printing press characterized by pulling one end. In the blanket mounting device of the rotary printing press according to claim 1,
A blanket mounting device for a rotary printing press, wherein a base that is pushed into a groove by the pushing member rotates about a corner that is in contact with the wall of the groove. There are two blanket holding devices each holding both ends of the blanket, and one blanket holding device is inserted into the groove, which is provided on the blanket holding surface of the trunk and into which a base fixed to one end of the blanket is inserted. In the blanket mounting device for a rotary printing press, which includes a pressing member that presses the base into the groove and presses the blanket against the blanket holding surface, and the other holding device is provided with tension means for pulling the other end of the blanket.
A first position for pressing the pressing member into the groove and pressing the blanket against the blanket holding surface; and a second position for allowing the base to be removed from the groove or for attaching the base to the groove. Between the first position and the second position, the base inserted into the groove is locked, and the other end of the blanket is pulled. A blanket mounting device for a rotary printing press comprising positioning means for positioning at a third position that can be pulled by the means. In the blanket mounting device of the rotary printing press according to claim 3,
The positioning means is a bolt that moves the push-in member to each of the first position, the second position, and the third position by allowing the push-push lever to which the push-in member is attached to move forward and backward. A nut that is screwed to the bolt, a spacer that is swingably supported by the claw base lever and engages the nut, and positions the pushing member in the third position, and the spacer is attached to the nut. A blanket mounting device for a rotary printing press, characterized by comprising biasing means for biasing in an engaging direction. A base fixed to one end of the blanket is inserted into a groove formed on the blanket holding surface of the notch provided on the outer peripheral portion of the trunk, and the base inserted into the groove is locked by a pushing member separated from the blanket holding surface. Then, after pulling the other end of the blanket in addition to the blanket holding device provided at the other end of the blanket, the base is pressed into the groove by the pressing member to press the blanket against the blanket holding surface. A blanket mounting method for a rotary printing press characterized by the above.

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