WO2006038331A1 - Doctor blade attaching device and doctor blade attaching method - Google Patents

Abstract

A doctor blade attaching device, which is a device for attaching a doctor blade to a doctor holder consisting of a lower doctor holder and an upper doctor holder, is arranged so that a support surface (18) provided with a magnet (23) is set coplanar with the upper surface of a lower doctor holder (41), the support surface (18) supports a doctor blade (42), and the doctor blade (42) is pushed for movement by a doctor blade adjusting block (21). This doctor blade attaching device allows even a beginner to attach the doctor blade to the doctor holder accurately and in a short time without causing undulations.

Description

 Specification

 Doctor blade mounting device and doctor blade mounting method

 Technical field

 [0001] The present invention relates to an apparatus for attaching a doctor blade used in a gravure printing machine to a doctor holder. More specifically, even a beginner can accurately and quickly generate a wave, The present invention relates to a doctor blade attachment device and a doctor blade attachment method that make it possible to attach a doctor blade to a doctor holder.

 Background art

 [0002] The gravure plate cylinder of the gravure printing machine has fine recesses for ink filling, and ink is filled by applying ink to the surface of the gravure plate cylinder. After the ink has been filled into the recesses, the gravure plate cylinder is inked only in the recesses by bringing the doctor blade into contact with the surface of the gravure plate cylinder and scraping off the ink held in the areas other than the recesses. Will be left. Thereafter, the printing material is pressed against the gravure plate cylinder, filled in the recesses, and the ink transferred is transferred to the printing material.

 [0003] In this case, the contact between the surface of the gravure plate cylinder and the doctor blade is extremely important, and the quality of this contact directly becomes the quality of printing. In addition, since the doctor blade is installed in the gravure printing machine while being sandwiched between the doctor holder composed of the lower doctor holder and the upper doctor holder, it is important to attach the doctor blade to the doctor holder with high accuracy. Specifically, it is important to accurately adjust the length of the doctor blade that also projects the doctor holder force. However, this installation is known to require a lot of time and a lot of experience. In the following description, the length that the predetermined plate held by the doctor holder protrudes from the doctor holder cover is referred to as the protrusion length.

[0004] The doctor blade is formed of a thin metal plate and has a length similar to that of the gravure plate cylinder. Therefore, when the doctor blade is sandwiched between the doctor holders, a wave may occur in the doctor blade as the fastening members are sequentially tightened. In this way, the occurrence of ripples in the doctor blade will adversely affect the print quality of gravure printing. [0005] Thus, conventionally, a method for attaching a doctor blade to a doctor holder has been proposed in the same way as a beginner even if he is an experienced person. For example, as a doctor blade attachment method for preventing the doctor blade from wobbling, a method of attaching to the doctor holder while pulling both ends of the doctor blade has been proposed (see Patent Document 1). According to this method, one end of the doctor blade is fixed, the other end is held by a horizontally movable block, and the doctor blade is attached to the doctor holder while pulling the doctor blade by a mechanism having an air cylinder.

 Patent Document 1: Japanese Patent Laid-Open No. 2000-334915

 Disclosure of the invention

 [0006] As described above, a lot of time and experience are required for the work of accurately attaching the doctor blade to the doctor holder. In addition, as described above, the attachment of the doctor blade has a problem of a wave. The method according to Patent Document 1 solves the problem of undulations in the doctor blade. The problem that requires a lot of time and experience to install the doctor blade with high accuracy has been solved.

 [0007] Therefore, the present invention provides a doctor blade attachment device and a doctor blade attachment that enable a doctor blade to be attached to a doctor holder with high accuracy and in a short time without causing undulation even for beginners. It is an object to provide a method.

 [0008] In order to solve the above problems, a doctor blade attachment device according to the present invention is a doctor blade attachment device for attaching a doctor blade to a doctor holder comprising a lower doctor holder and an upper doctor holder, and supports the doctor blade. Blade support means having a support surface for the surface, surface projecting means for making the upper surface of the lower doctor holder substantially flush with the support surface, and a blade of the doctor blade attached to the upper surface of the lower doctor holder. It has a blade adjusting means for adjusting the protruding length. With such a configuration, the protruding length of the doctor blade attached to the lower doctor holder can be accurately adjusted.

[0009] In addition, in the above configuration, the blade support means may include a magnet on the support surface. By doing so, it becomes possible to prevent the doctor blade from being wavy when the doctor blade is attached to the doctor holder. [0010] Further, in the above configuration, back plate adjusting means for adjusting a protruding length of a back plate attached to the upper surface of the doctor blade can be provided. By doing so, it becomes possible to accurately adjust the protruding length of the knock plate.

[0011] Further, in the above-described configuration, the chamfering means can escape upward. In this way, when the lower doctor holder is chamfered, it is possible to secure a sufficient space for the subsequent work.

 Next, a doctor blade attachment method according to the present invention is a doctor blade attachment method for attaching a doctor blade to a doctor holder composed of a lower doctor holder and an upper doctor holder, wherein the doctor blade is a member having a magnet. And a step of holding the doctor blade between the lower doctor holder and the upper doctor holder. By adopting such a process, it is possible to attach the doctor blade to the doctor holder without causing a wave in the doctor blade.

 [0013] According to the present invention, even a beginner can attach a doctor blade to a doctor holder with high accuracy and in a short time. In addition, it is possible to prevent the wave generated in the doctor blade. Furthermore, the protruding length of the back plate can be adjusted with high accuracy.

 Brief Description of Drawings

FIG. 1 is a front view of a doctor blade mounting device in an embodiment of the present invention.

 FIG. 2 is a schematic explanatory view showing a state in which the doctor blade in the embodiment is attached to the doctor holder.

FIG. 3 is a sectional view taken along line AA of the doctor blade mounting device in the embodiment of the present invention. FIG. 4 is a sectional view taken along line BB of the doctor blade mounting device in the embodiment of the present invention. 5] A sectional view taken along the line CC of the doctor blade mounting device according to the embodiment of the present invention. [FIG. 6] A diagram schematically showing the rotation of the surface-blocking block. BEST MODE FOR CARRYING OUT THE INVENTION

 [0015] Hereinafter, embodiments of a doctor blade mounting device according to the present invention will be described.

 FIG. 1 shows a front view of a toctor blade mounting device according to the present embodiment. The doctor blade mounting device 1 includes a doctor holder support base 13, a chamfering block 10, a doctor holder contact bar 1 1, a doctor holder support base adjustment handle 14, a doctor blade adjustment handle 22, a back plate adjustment handle 31, a doctor blade support base. 20, Doctor blade adjustment block 21, back plate adjustment block 30 and mount 16 are provided.

 [0017] The doctor holder support base 13 is a support base for supporting an assembly target object such as a lower doctor holder. In the doctor blade mounting device 1 of the present embodiment, the doctor holder support 13 is installed on the side surface of the gantry 16 one by one so as to be symmetrical! , Ru The doctor holder support base adjustment handle 14 is a handle for adjusting the upper and lower positions of the doctor holder support base 13 by a gear mechanism that connects the doctor holder support base 13 and the doctor holder support base adjustment handle 14. It is installed in the same A—A cross section and at the bottom of the mount 16.

 [0018] The facing block 10 and the doctor holder contact bar 11 are installed on the gantry 16 via an arm 17 (not shown). In addition, the surface setting block 10 and the doctor holder contact bar 11 are installed so as to be located in the same A-A cross section as the doctor holder support base 13.

 The doctor blade support base 20 is a long rectangular member for supporting the doctor blade, and is fixed on the gantry 16. The doctor blade adjustment block 21 is a long rectangular member for adjusting the protruding length of the doctor blade, and is installed on the frame 16 so as to be horizontally movable. The knock plate adjusting block 30 is a long rectangular member for adjusting the protruding length of the knock plate, and is installed on the doctor blade adjusting block 21 so as to be horizontally movable.

[0020] The doctor blade adjustment handle 22 is a handle used to adjust the protruding length of the doctor blade. When the doctor blade adjustment handle 22 is turned, the doctor blade adjustment block 21 pushes the doctor blade by the gear mechanism that connects the doctor blade adjustment handle 22 and the doctor blade adjustment block 21 and the screw mechanism provided in the doctor blade adjustment block 21. It has a moving structure. The doctor blade adjustment handle 22 is Side and inside the doctor holder support adjustment handle 14 so as to be symmetrical.

 [0021] The knock plate adjustment handle 31 is a handle used to adjust the protruding length of the knock plate. When the back plate adjustment handle 31 is turned, the knock plate adjustment block 30 is connected to the knock plate by the gear mechanism for connecting the back plate adjustment handle 31 and the back plate adjustment block 30 and the screw mechanism provided in the knock plate adjustment block 30. It is structured to push and move. Further, in the doctor blade mounting device 1 according to the present embodiment, the knock plate adjustment handle 31 is installed so as to be symmetrical on the lower side of the gantry 16 and outside the doctor holder support pedestal adjustment handle 14! .

 FIG. 2 shows a doctor holder used in this embodiment and a doctor blade to be attached. The doctor blade 42 has a copper plate force of about 15 mm thick, for example. For example, the back plate 43 is made of a panel steel plate having a thickness of about 10 mm. The doctor holder 40 is composed of a lower doctor holder 41 and an upper doctor holder 44, and has a structure in which the doctor blade 42 and the back plate 43 are sandwiched via the fastening member 44.

 [0023] The thickness and material of the doctor blade 42 and the back plate 43 are not limited to those described above, and can be changed as appropriate according to the conditions used in the gravure printing machine. Further, the shape of the doctor holder 40 and the arrangement of the fastening members 45 are not limited to those shown in FIG. 2, and can be changed as appropriate according to the conditions of use.

 FIG. 3 is a cross-sectional view taken along line AA of the doctor blade mounting device 1. In addition, in order to schematically show the function of the doctor holder support base 13, a diagram in which the lower doctor holder 41 is mounted on the doctor holder support base 13 is shown.

 [0025] When the doctor blade 42 is attached to the doctor holder 40, the doctor holder support base 13 sequentially mounts the lower doctor holder 41, the doctor blade 42, the back plate 43, and the upper doctor holder 44. Also, the doctor holder support base 13 can be moved in the vertical direction by operating the doctor holder support base adjustment handle 14. Note that the movement of the doctor holder support 13 is performed by the gear mechanism 19a.

The doctor blade support base 20 is a blade support means for supporting a doctor blade 42 (not shown). The doctor blade support base 20 has a surface in contact with the doctor blade 42. The doctor blade support surface 18 is provided with a magnet 23 on the doctor blade support surface 18. Thus, by providing the doctor blade support base 20 with the magnet 23, it is possible to adjust the protruding length of the doctor blade while holding the doctor blade 42 in the height direction. In addition, the magnet 23 has an advantage that it can be used repeatedly.

 The chamfering block 10 is a chamfering means for making the upper surface of the lower doctor holder 41 substantially in the same plane as the doctor blade support surface 18. The chamfering block 10 is attached to an arm 17 and can perform a pivoting movement about an indirect portion 12 provided in the arm 17. FIG. 6 shows a diagram in which the chamfering block 10 is rotated upward. Further, the chamfering block 10 is attached to the arm 17 so that a part of the lower surface of the chamfering block 10 comes into contact with the doctor blade support surface 18 when rotated downward. Therefore, by bringing a part of the upper surface of the lower doctor holder 41 into contact with the lower surface of the chamfering block 10 that is in contact with the doctor blade support surface 18, the upper surface of the lower doctor holder 41 is substantially the same as the doctor blade support surface 18. Be in-plane. Also, by allowing the facing block 10 to escape upward, it is possible to secure sufficient space for the subsequent work.

 [0028] It should be noted that the mechanism for moving the surface block 10 up and down is not limited to an arm having an indirect portion, and a known alignment mechanism such as an air cylinder or an electric actuator may be used.

 The doctor holder contact bar 11 is attached to the arm 17 in the same manner as the chamfering block 10. The doctor holder contact bar 11 is used to prevent the lower doctor holder from shaking and vibrating when the lower doctor holder 41 is chamfered. If the upper surface of the lower doctor holder 41 can be stably surfaced only by the contact between the chamfering block 10 and the lower doctor holder 41, the doctor holder contact bar 11 is not necessarily required.

 FIG. 4 shows a cross-sectional view of the doctor blade mounting device 1 along the line BB. In order to schematically show the functions of the doctor blade support 20 and the doctor blade adjustment block 21, the lower doctor holder 41 and the doctor blade 42 attached to the lower doctor holder 41 are mounted on the doctor holder support base 13. Show.

[0031] The doctor blade support 20 is a blade support means for supporting the doctor blade 42 as described above. The upper surface of this doctor blade support base 20, that is, the doctor blade support The surface 18 is provided with a magnet 23, and the doctor blade 42 can be held in the height direction by pressing the lower surface of the doctor blade 42 against the doctor blade support surface 18. Therefore, it is possible to fix the doctor blade 42 to the doctor holder 40 without generating a wave.

 The doctor blade adjustment block 21 is blade adjustment means for adjusting the protruding length of the doctor blade 42 attached to the upper surface of the lower doctor holder 41. The doctor blade adjustment block 21 can move the upper surface of the gantry 16 in the horizontal direction by operating the doctor blade adjustment handle 22. The movement of the doctor blade adjustment block 21 is performed by the gear mechanisms 19b and 19c and the screw mechanism provided in the doctor blade adjustment block 21.

 The height of the doctor blade adjustment block 21 is slightly higher than the doctor blade support base 20, and for example, the doctor blade adjustment block 21 is 3 mm higher than the doctor blade support base 20. Note that the doctor blade adjustment block 21 may have any height as long as the end face of the doctor blade 42 can be sufficiently pressed and does not hinder the adjustment of the back plate 43 by the back plate adjustment block 30 described later.

 [0034] In this way, by moving the doctor blade adjustment block 21 horizontally and pushing the doctor blade 42 on the side of the doctor blade adjustment block 21, the protruding length of the doctor blade 42 can be adjusted with high accuracy. It becomes possible to do. The doctor blade adjustment block 21 may be moved by using a known alignment mechanism such as an air cylinder or an electric actuator.

 FIG. 5 is a cross-sectional view of the doctor blade mounting device 1 taken along the line CC. In order to schematically show the function of the knock plate adjustment block 30, a view in which the lower doctor holder 41, the doctor blade 42, and the back plate 43 are mounted on the doctor holder support base 13 is shown.

The back plate adjusting block 30 is a back plate adjusting means for adjusting the protruding length of the back plate 43 attached to the upper surface of the doctor blade 42. The knock plate adjustment block 30 can be moved in the horizontal direction by operating the knock plate adjustment handle 31 in the horizontal direction. Further, the movement of the backplate adjustment block 30 is performed by the gear mechanisms 19d and 19e and the knock plate adjustment block 3 This is performed by a screw mechanism included in 0.

[0037] As described above, the knock plate adjustment block 30 is horizontally moved, and the back plate 43 is pushed and moved on the side surface of the back plate adjustment block 30, thereby accurately adjusting the protruding length of the back plate 43. It becomes possible to do. The movement of the knock plate adjustment block 30 may be performed by using a known alignment mechanism such as an air cylinder or an electric actuator.

 [0038] The configuration of the doctor blade mounting device in the present embodiment has been described above. Next, a doctor blade mounting method using the doctor blade mounting apparatus according to the present embodiment will be described.

 First, the chamfering block 10 and the doctor holder contact bar 11 are moved downward to bring the lower surface of the chamfering block 10 into contact with the doctor blade support surface 18. Next, the lower doctor holder 41 to be assembled is mounted on the doctor holder support base 13. Next, the doctor holder support base adjustment handle 14 is turned to raise the doctor holder support base 13. Next, the upper surface of the lower doctor holder 41 is brought into contact with the lower surface of the chamfering block 10 and the doctor holder contact bar 11 so that the upper surface of the lower doctor holder 41 and the doctor blade support surface 18 are substantially in the same plane. Thus, when the chamfering operation of the lower doctor holder is completed, the chamfering block 10 and the doctor holder contact bar 11 are moved upward. In this way, the chamfering block 10 and the doctor holder contact bar 11 can be moved in the vertical direction, so that the subsequent work can be performed in a sufficiently large space.

 Next, the doctor blade 42 is attached to the upper surface of the lower doctor holder 41. At this time, the doctor blade 42 is attached so that the tip of the doctor blade 42 protrudes from the lower doctor holder 41 and also protrudes from the doctor blade support 20. Next, the doctor blade adjustment handle 22 is turned to adjust the protruding length of the doctor blade 42 to a predetermined length.

 Next, the back plate 43 is attached to the upper surface of the doctor blade 42. At this time, the back plate 43 is attached so that the tip of the back plate 43 is substantially aligned with the tip of the doctor blade 42. Next, the knock plate adjustment handle 31 is turned to adjust the protruding length of the knock plate 43 to a predetermined length.

[0042] Next, the upper doctor holder 44 is mounted on the back plate 43, and the fastening member 45 Fix the holder holder 40, the doctor blade 42, and the back plate 43. At this time, the doctor blade 42 is pressed against the magnet 23 provided on the doctor blade support surface 18, and thus is not distorted. Therefore, it is possible to fix the doctor blade 42 to the doctor holder 40 without generating a wave.

[0043] By using the doctor blade attachment device 1 as described above, even a beginner can attach a doctor blade that does not generate waviness to the doctor holder with high accuracy and in a short time.

 [0044] The embodiments of the present invention have been described above. It should be noted that the present invention is not limited to the above embodiment, and each component can be appropriately changed without departing from the gist of the present invention.

Claims

The scope of the claims  [1] A doctor blade attachment device for attaching a doctor blade to a doctor holder having force with a lower doctor holder and an upper doctor holder,  Blade support means having a support surface for supporting the doctor blade, and a surface projecting means for making the upper surface of the lower doctor holder substantially in the same plane as the support surface;  Blade adjusting means for adjusting the protruding length of the doctor blade attached to the upper surface of the lower doctor holder;  A doctor blade mounting device characterized by comprising:  [2] The blade support means includes a magnet on the support surface. 1. The doctor blade mounting device according to 1. 3. The doctor blade attachment device according to claim 1, further comprising a knock plate adjusting means for adjusting a protruding length of a back plate attached to the upper surface of the doctor blade.  [4] The doctor blade mounting device according to [1], wherein the surface projecting means escapes upward.  [5] A doctor blade mounting method for mounting a doctor blade to a lower doctor holder, an upper doctor holder, and a doctor holder that also has force,  Supporting the doctor blade with a member having a magnet;  Clamping the doctor blade between the lower doctor holder and the upper doctor holder;  A doctor blade mounting method characterized by comprising: