JP2015167879A - glue supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glue supply device in which supply unevenness in an axial direction of a glue roll is suppressed and a need of cleaning the glue supply device due to the adhesion of glue is reduced.SOLUTION: A glue supply device is provided for supplying glue to a plate cylinder, and includes: a glue tank having a glue outlet in a part of a bottom surface; a glue roll provided substantially horizontally and rotatably so that a part of an outer circumferential surface is arranged in the glue tank and the glue outlet is positioned at the downstream side in a traveling direction of the outer circumferential surface in the glue tank, the glue roll being configured so as to supply the glue in the glue tank to the plate cylinder while rotating; and a straightening plate provided between the glue outlet and the glue roll in the glue tank. The glue supply device is characterized in that a height of a top part of the straightening plate is lowered as approaching both ends in the axial direction of the glue roll in front view from the glue roll side.

Description

  The present invention relates to a glue supply device for supplying glue to a plate cylinder.

  The glue is applied to the sheet or the like in the bonding process of the sheet or the like by transferring the glue attached to the surface of the plate cylinder to the sheet or the like. The application of the paste using such a plate cylinder is performed while continuously supplying the paste to the surface of the plate cylinder.

  For example, in Patent Document 1 (Japanese Patent Laid-Open No. 10-156975) and Patent Document 2 (Japanese Utility Model Laid-Open No. 3-95227), the glue roll is rotated by being rotated while immersed in a paste tank containing glue. A method of continuously supplying glue to the surface of a plate cylinder arranged to contact is disclosed.

  Patent Document 3 (Japanese Patent Laid-Open No. 2002-136907) discloses a method of continuously supplying glue discharged from a glue nozzle to the surface of a plate cylinder through a doctor roll and a glue roll in order.

Japanese Patent Laid-Open No. 10-156975 Japanese Utility Model Publication No. 3-95227 JP 2002-136907 A

  The inventor of the present invention has obtained the following knowledge while earnestly researching the continuous paste supply method on the plate cylinder.

  In other words, if the paste roll is rotated while being immersed in the paste tank, the paste in the paste tank is sent to one side of the paste tank by the rotating paste roll, and a paste flow is formed. The flow has the property that due to its viscosity, the flow rate decreases as it approaches the axial ends of the glue roll. If the state where the flow rate of the glue is reduced and the fluid does not flow sufficiently at both ends in the axial direction of the glue roll continues, the viscosity of the glue rises to exceed a desired level, and the desired properties as the glue are impaired. As a result, there is a problem that unevenness of supply occurs in the axial direction of the glue roll. Moreover, in the paste supply method using the glue nozzle and the doctor roll, it is necessary to frequently clean the glue nozzle and the doctor roll to which the glue is attached.

  The present invention has been made in consideration of such points, and the object thereof is to suppress supply unevenness in the axial direction of the glue roll, and to reduce the need for cleaning the apparatus due to adhesion of glue. The object is to provide a glue supply device.

  The present invention is a paste supply device for supplying glue to a plate cylinder, wherein a paste tank having a paste discharge port in a part of a bottom surface, and a part of an outer peripheral surface are disposed in the paste tank. A glue roll provided substantially horizontally and rotatably so that the glue discharge port is located downstream of the outer circumferential surface of the glue tank in the traveling direction, and the glue in the glue tank is rotated while the plate is rotating. A glue roll adapted to be supplied to the cylinder, and a current plate provided between the glue discharge port and the glue roll in the glue tank, and in the front view from the glue roll side The height of the top part of a baffle plate is a glue supply apparatus characterized by becoming low as it approaches the both ends of the axial direction of the said glue roll.

  According to the present invention, the glue sent to one side of the glue tank by the rotation of the glue roll passes through the current plate provided on the downstream side of the glue roll and is discharged from the glue discharge port. Here, the height of the top portion of the current plate decreases as it approaches both ends of the glue roll in the axial direction, and the conductance increases as the height of the current plate decreases, resulting in the axial direction of the glue roll. Glue tends to flow as it approaches both ends. By the balance between the characteristic that the flow rate decreases as it approaches the both ends in the axial direction of the paste roll due to the viscosity of the paste, and the action that the paste easily flows as it approaches both ends in the axial direction of the paste roll by the rectifying plate, The flow rate of the glue is made uniform in the axial direction of the glue roll. For this reason, the glue viscosity increases on the both ends in the axial direction of the glue roll, and the glue whose desired properties as the glue are impaired adheres to the glue roll, or such glue has a high strength in the glue tank. As a result, the uneven supply of the glue roll in the axial direction is suppressed, and the necessity of cleaning the apparatus due to the adhesion of the glue is reduced.

  Preferably, the height of the top portion of the current plate in a front view from the glue roll side is gradually reduced as it approaches both ends of the glue roll in the axial direction. According to such an aspect, manufacture of a baffle plate is easy.

  Or the height of the top part of the said baffle plate may become low continuously as it approaches the both ends of the axial direction of the said glue roll in the front view from the said glue roll side. According to such an aspect, the flow rate of the glue can be made more uniform in the axial direction of the glue roll, and as a result, the supply unevenness in the axial direction of the glue roll can be further suppressed.

  Preferably, the rectifying plate has an upper surface rising region in which the height of the upper surface becomes higher as approaching the glue discharge port. According to such an aspect, formation of the vortex | eddy_current etc. by a baffle plate can be suppressed effectively.

  In this case, specifically, for example, the current plate has a substantially triangular shape in a side view from the axial direction of the glue roll. Alternatively, the current plate may have a substantially semicircular shape in a side view from the axial direction of the glue roll.

  Moreover, Preferably, the contact angle of the upper surface of the said baffle plate with respect to the glue in the said paste tank is 40 degrees or less. According to the actual verification by the present inventors, the fluidity of the glue passing over the current plate can be further enhanced by such an aspect.

  Preferably, the apparatus further includes a paste supply mechanism that supplies the paste discharged from the paste discharge port to the paste tank. According to such an aspect, the paste discharged from the paste discharge port can be effectively reused.

  Specifically, for example, a delivery cylinder is disposed between the glue roll and the plate cylinder, and the glue on the glue roll is supplied onto the plate cylinder via the delivery cylinder. It has become.

  Alternatively, the glue roll and the plate cylinder may be arranged so as to be in direct contact with each other, and the glue on the glue roll may be directly supplied onto the plate cylinder.

  According to the present invention, the glue sent to one side of the glue tank by the rotation of the glue roll passes through the current plate provided on the downstream side of the glue roll and is discharged from the glue discharge port. Here, the height of the top portion of the current plate decreases as it approaches both ends of the glue roll in the axial direction, and the conductance increases as the height of the current plate decreases, resulting in the axial direction of the glue roll. Glue tends to flow as it approaches both ends. By the balance between the characteristic that the flow rate decreases as it approaches the both ends in the axial direction of the paste roll due to the viscosity of the paste, and the action that the paste easily flows as it approaches both ends in the axial direction of the paste roll by the rectifying plate, The flow rate of the glue is made uniform in the axial direction of the glue roll. For this reason, the glue viscosity increases on the both ends in the axial direction of the glue roll, and the glue whose desired properties as the glue are impaired adheres to the glue roll, or such glue has a high strength in the glue tank. As a result, the uneven supply of the glue roll in the axial direction is suppressed, and the necessity of cleaning the apparatus due to the adhesion of the glue is reduced.

FIG. 1 is a partial cross-sectional view schematically showing a paste supply device according to an embodiment of the present invention and a plate cylinder to which paste is supplied from the paste supply device. FIG. 2 is a schematic plan view showing an example of the shape of the glue discharge port in the glue supply apparatus shown in FIG. FIG. 3 is a schematic plan view showing another example of the shape of the glue discharge port in the glue supply apparatus shown in FIG. FIG. 4 is an enlarged schematic view showing the current plate and the glue roll in the glue supply apparatus shown in FIG. Fig.5 (a) is a schematic plan view which shows the 1st example of the shape of the baffle plate in the glue supply apparatus shown in FIG. FIG. 5B is a schematic front view thereof. FIG. 5C is a schematic side view thereof. Fig.6 (a) is a schematic plan view for demonstrating the flow of the glue in the glue tank of the glue supply apparatus shown in FIG. FIG. 6B is a schematic front view thereof. Fig.7 (a) is a schematic plan view for demonstrating the flow of the glue in a glue tank in the comparative example that the height of the top part of a baffle plate is the same regarding the axial direction of a glue roll. FIG. 7B is a schematic front view thereof. Fig.8 (a) is a schematic plan view which shows the 2nd example of the shape of the baffle plate in the glue supply apparatus shown in FIG. FIG. 8B is a schematic front view thereof. FIG. 8C is a schematic side view thereof. Fig.9 (a) is a schematic plan view which shows the 3rd example of the shape of the baffle plate in the glue supply apparatus shown in FIG. FIG. 9B is a schematic front view thereof. FIG. 9C is a schematic side view thereof. Fig.10 (a) is a schematic plan view which shows the 4th example of the shape of the baffle plate in the glue supply apparatus shown in FIG. FIG. 10B is a schematic front view thereof. FIG. 10C is a schematic side view thereof. Fig.11 (a) is a schematic plan view which shows the 5th example of the shape of the baffle plate in the glue supply apparatus shown in FIG. FIG. 11B is a schematic front view thereof. FIG. 11C is a schematic side view thereof. Fig.12 (a) is a schematic plan view which shows the 6th example of the shape of the baffle plate in the glue supply apparatus shown in FIG. FIG. 12B is a schematic front view thereof. FIG. 12C is a schematic side view thereof.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram schematically showing a paste supply device according to an embodiment of the present invention and a plate cylinder to which paste is supplied from the paste supply device.

  As shown in FIG. 1, the glue supply device 10 according to the present embodiment includes a glue tank 11 having a glue discharge port 17 in a part of the bottom surface, and a part of the outer peripheral surface 12 a disposed in the glue tank 11. The glue roll 12 (also called a finisher roller) is provided so as to be substantially horizontal and rotatable so that the glue discharge port 17 is located on the downstream side (right side in FIG. 1) of the outer peripheral surface 12a in the glue tank 11 in the traveling direction. And a rectifying plate 16 provided between the glue discharge port 17 and the glue roll 12 in the glue tank 11. As the paste 50, for example, a vinyl acetate resin having a viscosity of 1000 mPa · s to 2000 mPa · s is used.

  As shown in FIG. 1, the glue roll 12 has a cylindrical shape as a whole, and is disposed substantially horizontally above the glue tank 11 so that a part of the outer peripheral surface 12 a is located in the glue tank 11. ing. In the present embodiment, the transfer cylinder 13 is disposed on the upper right side of the glue roll 12 so as to be rotatable about the axis 13 b so that the axis 13 b is parallel to the axis 12 b of the glue roll 12. The glue roll 12 is configured to adhere the glue 50 in the glue tank 11 to the delivery cylinder 13 while rotating around the shaft 12b.

  In the present embodiment, the paste tank 11 is a generally shallow rectangular tube (box shape) provided substantially horizontally, and has a rectangular bottom surface and a rectangular tube wall, The upper part is open. However, the shape of the paste tank 11 is not limited to this example, and may be other shapes. The internal dimensions of the paste tank 11 are, for example, about 1000 mm in width (length in a direction perpendicular to the paper surface in FIG. 1), about 300 mm in depth (length in the left-right direction in FIG. 1), and about 40 mm in height. It is. The glue tank 11 is oriented so that its width direction is parallel to the axial direction of the glue roll 12. The material of the paste tank 11 is stainless steel, for example.

  FIG. 2 is a schematic plan view showing an example of the shape of the glue discharge port 17 in the glue supply device 10 of the present embodiment.

  As shown in FIG. 2, the glue discharge port 17 of the present embodiment is a glue roll on the bottom surface of the glue tank 11 and in the vicinity of the wall portion on one side in the depth direction of the glue tank 11 (upper side in FIG. 2). Three of the twelve axial directions are provided at equal intervals from one side (left side in FIG. 2) to the other side (right side in FIG. 2). In the illustrated example, each glue discharge port 17 includes a circular opening in plan view. The diameter of the opening is preferably about 30 mm to 50 m, and specifically about 38 mm, for example. The shape of the opening of the glue discharge port 17 may be other shapes such as three elongated slits arranged in the depth direction (vertical direction in FIG. 2) of the glue tank 11 as shown in FIG. Good. Further, the number of the opening portions of the glue discharge port 17 may be less or more than three.

  FIG. 4 is an enlarged schematic view showing the glue roll 12 and the current plate 16 in the glue supply device 10 of the present embodiment.

  As shown in FIG. 4, the glue roll 12 is arranged such that a part of the outer peripheral surface 12 a is located in the glue tank 11 and another part of the outer peripheral surface 12 a is in contact with the outer peripheral surface 13 a of the delivery cylinder 13. ing.

  The glue roll 12 of the present embodiment is rotated about a shaft 12b by a rotation drive unit 12c. In the illustrated example, the glue roll 12 is rotated counterclockwise in FIG. In other words, the glue roll 12 is rotated such that the traveling direction of the outer peripheral surface 12a in the glue tank 11 is the right direction as a whole in FIG.

  The diameter of the glue roll 12 is, for example, about 120 mm, and the length in the axis 12b direction is, for example, about 1000 mm to 1200 mm. The glue roll 12 may be formed of a material generally used for rubber, such as urethane. The distance H between the outer peripheral surface 12a of the glue roll 12 and the bottom surface of the glue tank 11 is preferably about 10 mm to 20 mm.

  On the other hand, the current plate 16 is an elongated plate-like member having substantially the same length as the axial direction of the outer peripheral surface 12 a of the glue roll 12, and is located between the glue discharge port 17 and the glue roll 12 in the glue tank 11. The glue roll 12 is provided in parallel with the axial direction. The material of the current plate 16 is, for example, aluminum. The rectifying plate 16 only needs to have an upper surface for guiding the flow of the glue 50, and for example, the inside thereof may be a cavity. The height T from the bottom surface of the paste tank 11 to the top 163 of the current plate 16 is preferably about 25 mm to 33 mm.

  With reference to FIG. 5A to FIG. 5C, the shape of the rectifying plate 16 will be described in more detail. FIG. 5A is a schematic plan view showing a first example of the shape of the rectifying plate 16 as viewed from vertically above. FIG. 5B is a schematic front view seen from the glue roll 12 side. FIG. 5C is a schematic side view seen from the axial direction of the glue roll 12.

  As shown in FIGS. 5A to 5C, the height of the top 163 of the current plate 16 is from the glue roll 12 side (the lower side of FIG. 5A and the left side of FIG. 5C). In the front view, it becomes lower as it approaches both ends of the glue roll 12 in the axial direction.

  More specifically, the rectifying plate 16 of the present embodiment includes one end region 16b including an end portion on one side (right side in FIGS. 5A and 5B) of the glue roll 12 in the axial direction. The other end region 16c including the end of the other side of the glue roll 12 in the axial direction (left side in FIGS. 5A and 5B), the one end region 16b, and the other end region A central region 16a located between the end regions 16b and 16c, and the heights of the top portions 163b and 163c of the end regions 16b and 16c are lower than the height of the top portion 163a of the central region 16a. Preferably, the height of the top portions 163b and 163c of the end regions 16b and 16c is 20% to 30% lower than the height of the top portion 163a of the central region 16a.

  In the present embodiment, as shown in FIG. 5C, the central region 16a has a triangular shape in a side view from the axial direction of the glue roll 12, and the end regions 16b and 16c are glued. The roll 12 has a trapezoidal shape in a side view from the axial direction. The top portion 163a of the central region 16a corresponds to a triangular apex portion, and the top portions 163b and 163c of the end regions 16b and 16c correspond to an upper bottom portion of a trapezoidal shape. The upper surface 161a of the central region 16a and the upper surfaces 161b and 161c of the end regions 16b and 16c on the side of the glue roll 12 are located in the same plane.

  Specifically, for example, the central region 16a has a length of 700 mm in the axial direction of the glue roll 12 (left and right direction in FIGS. 5A and 5B) and a depth of the bottom surface (in FIG. 5A). The length in the vertical direction (the length in the left-right direction in FIG. 5C) is 60 mm, and the height from the bottom surface to the top 163a is 33 mm. On the other hand, each end region 16b, 16c has an axial length of the glue roll 12 of 150 mm, a depth of the bottom surface (the length of the bottom of the trapezoidal shape) of 60 mm, and a height from the bottom surface to the top portions 163b, 163c. Is 25 mm.

  Thus, the height of the top portions 163b and 163c of the end regions 16b and 16c is lower than the height of the top portion 163a of the central region 16a, so that the glue 50 passing over the current plate 16 can be used. The conductances of the end regions 16b and 16c are larger than the conductance of the central region 16a. That is, in each of the end regions 16b and 16c, the glue 50 is easier to flow than in the central region 16a.

  In the present embodiment, the action that the glue 50 easily flows in each of the end regions 16b and 16c by the current plate 16 is that the flow rate decreases as the viscosity of the glue 50 approaches the both ends of the glue roll 12 in the axial direction. The specific dimensions of the rectifying plate 16 are based on the simulation result of the flow of the paste 50 so that the flow rate of the paste 50 is made uniform in the axial direction of the paste roll 12 by being balanced with the characteristics of the flow of 50. It has been decided.

  Further, as shown in FIGS. 4 and 5 (c), the current plate 16 of the present embodiment has an upper surface 161 (that is, the upper surface 161a of the central region 16a and the end regions 16b and 16c on the side of the glue roll 12). It has an upper surface rising area 162 in which the height of the upper surfaces 161b and 161c) increases as it approaches the glue discharge port 17. The distance L between the upper surface 161 of the upper surface rising region 162 and the outer peripheral surface 12a of the glue roll 12 is preferably about 20 mm to 30 mm.

  Since the baffle plate 16 has the upper surface rising area 162, the paste 50 in the paste tank 11 sent to one side of the paste tank 11 (the right side in FIGS. 4 and 5C) by the rotation of the glue roll 12 is the upper surface. Smooth guidance is provided along the upper surface 161 of the ascending region 162. Thereby, it is possible to prevent a vortex or the like from being formed on the current plate 16.

  In this Embodiment, the contact angle of the upper surface 161 of the baffle plate 16 with respect to the glue 50 in the glue tank 11 is 40 degrees or less. The present inventor actually used a vinyl acetate resin having a viscosity of 2000 mPa · s as the glue 50 and actually used a drop master-500 manufactured by Kyowa Interface Science Co., Ltd. as a contact angle meter. It was confirmed that the flowability of the paste 50 passing over the rectifying plate 16 can be further improved by using the aluminum rectifying plate 16 having a temperature of less than or equal to 0 °.

  Returning to FIG. 1, in the present embodiment, the plate cylinder 14 is arranged on the right side of the transfer cylinder 13 in parallel with the transfer cylinder 13 so as to contact the outer peripheral surface 13 a of the transfer cylinder 13. The plate cylinder 14 is rotated counterclockwise in FIG. 1 about the shaft 14b in synchronism with the delivery cylinder 13 by the rotation driving portion 14c.

  A pressure drum 15 is provided in parallel to the plate cylinder 14 b so as to face the outer peripheral surface 14 a of the plate cylinder 14 at an obliquely lower right side of the plate cylinder 14. The impression cylinder 15 is rotated around the shaft 15b in the clockwise direction in FIG. 1 in synchronism with the plate cylinder 14 by the rotation driving portion 15c.

  As shown in FIG. 1, the base material 30 on the sheet is sandwiched between the plate cylinder 14 and the impression cylinder 15. By rotating the rolls 12, 13, 14, and 15 around their respective rotation axes, the paste 50 in the paste tank 11 is transferred onto the outer peripheral surface 12a of the glue roll 12, and on the outer peripheral surface 12a of the glue roll 12. The paste 50 is transferred onto the outer peripheral surface 13a of the transfer cylinder 13, the paste 50 on the outer peripheral surface 13a of the transfer cylinder 13 is transferred onto the outer peripheral surface 14a of the plate cylinder 14, and the contact with the impression cylinder 15 of the substrate 30 is reached. In the region, the paste 50 is applied from the outer peripheral surface 14a of the plate cylinder 14 to the surface of the substrate 30 (upper surface in FIG. 1).

  As shown in FIG. 1, the glue supply device 10 of the present embodiment is further provided with a glue supply mechanism 18 that supplies the glue 50 discharged from the glue discharge port 17 to the glue tank 11.

  More specifically, the glue supply mechanism 18 includes a tray 18a provided below the glue tank 11 and configured to collect the glue 50 discharged from the glue discharge port 17, and the glue 50 collected by the tray 18a. A collecting hose 18b adapted to flow in, a paste tank 18c containing the paste 50 flowing into the collecting hose 18b and having a pump for pumping the paste 50 in the glue tank 18c; An introduction hose 18d adapted to guide the paste 50 pumped from the paste tank 18c to the paste tank 11.

  As shown in FIG. 1, the tray 18 a is a container provided below the glue tank 11 so as to cover the lower region of the glue discharge port 17, the upper part is opened, and the recovery hose 18 b is provided on the bottom surface. It has an opening 19 for connection. As shown in FIG. 1, the right end of the tray 18 a is preferably inclined obliquely upward so as not to come into contact with the base material 30, and further, the glue 50 falling from the outer peripheral surface 14 a of the plate cylinder 14. In order to prevent the fixed matter from adhering to the base material 30, it is more preferable to extend the base material 30 so as to cover the fall region of the fixed matter.

  Further, the tray 18a of the present embodiment is formed so that its bottom surface gradually decreases from the lower region of the glue discharge port 17 toward the opening 19, and is discharged from the paste discharge port 17 to the tray 18a. The received glue 50 flows toward the opening 19 by gravity. The inclination angle of the bottom surface of the tray 18a is, for example, 5 ° to 10 ° with respect to the horizontal plane.

  The recovery hose 18b has one end connected to the opening 19 of the tray 18a and the other end connected to the glue tank 18c. The recovery hose 18b receives the paste 50 discharged from the opening 19 of the tray 18a. It can be made to flow into the glue tank 18c. One end of the recovery hose 18b may be directly connected to the paste discharge port 17 of the paste tank 11. The recovery hose 18b has, for example, an inner diameter of about 50 mm. The material of the recovery hose 18b is, for example, vinyl chloride.

  The glue tank 18c is a container having a publicly known pump, and the glue 50 in the glue tank 18c can be pumped out of the glue tank 18c by the pump.

  The introduction hose 18d has one end connected to the paste tank 18c and the other end disposed above the paste tank 11, and the paste 50 pumped from the paste tank 18c is used as the paste hose 11d. It can be guided inside. The dimensions of the introduction hose 18d are, for example, an inner diameter of about 50 mm and a length of about 1000 mm. The material of the introduction hose 18d is, for example, vinyl chloride.

  Next, the operation of the present embodiment configured as described above will be described with reference to FIGS. Fig.6 (a) is a schematic plan view for demonstrating the flow of the glue 50 in the glue tank 11 of the glue supply apparatus 10 of this Embodiment. FIG. 6B is a schematic front view thereof.

  First, as shown in FIG. 1, the paste 50 is put into a paste tank 11 to a desired depth, and a part of the outer peripheral surface 12 a of the paste roll 12 is immersed in the paste 50. Thereafter, the rotation of each of the glue roll 12, the transfer cylinder 13, the plate cylinder 14 and the impression cylinder 15 is started. Specifically, the plate cylinder 14 is rotated counterclockwise in FIG. 1 about the shaft 14b of the plate cylinder 14 by the rotation drive unit 14c of the plate cylinder 14. Further, the impression cylinder 15 is rotated clockwise in FIG. 1 about the shaft 15b of the impression cylinder 15 by the rotation driving unit 15c of the impression cylinder 15. Further, the delivery cylinder 13 is rotated clockwise in FIG. 1 about the shaft 13 b of the delivery cylinder 13 by the rotation driving portion 13 c of the delivery cylinder 13. Further, the glue roll 12 is rotated counterclockwise in FIG. 1 about the axis 12b of the glue roll 12 by the rotation drive unit 12c of the glue roll 12. In the present embodiment, the peripheral speed of the transfer cylinder 13 is equal to the peripheral speed of the plate cylinder 14, and the peripheral speed of the glue roll 12 is slower than the peripheral speed of the transfer cylinder 13. The peripheral speed of the glue roll 12 may be equal to the peripheral speed of the delivery cylinder 13.

  When the rotation of the glue roll 12 is started, the glue 50 near the outer peripheral surface 12a of the glue roll 12 in the glue tank 11 is one side in the depth direction of the glue tank 11 due to the rotation of the glue roll 12 due to its viscosity. (Right side of FIG. 1). The glue 50 sent between the glue roll 12 and the current plate 16 is raised along the upper surface rising region 162 of the current plate 16, and the top 163 of the current plate 16 (that is, the top 163a and each end of the central region 16a). It moves toward the wall part on the one side (right side in FIG. 1) in the depth direction of the paste tank 11 beyond the top parts 163b and 163c) of the partial areas 16b and 16c.

  Here, since the heights of the top portions 163b and 163c of the end regions 16b and 16c are lower than the height of the top portion 163a of the central region 16a, the end regions 16b and 16c are compared with the central region 16a. The glue 50 is easy to flow. By the balance between the characteristic that the flow rate decreases as it approaches the both ends of the glue roll 12 in the axial direction due to the viscosity of the glue 50, and the effect that the glue 50 easily flows in the end regions 16 b and 16 c by the rectifying plate 16. As shown in FIGS. 6A and 6B, the flow rate of the glue 50 is made uniform in the axial direction of the glue roll 12. Therefore, at the both ends of the glue roll 12 in the axial direction, the viscosity of the glue 50 increases, and the glue 50 whose desired properties as the glue 50 are impaired adheres to the glue roll 12, or such glue 50 Does not adhere to the paste tank 11 with high strength.

  Moreover, in this Embodiment, since the baffle plate 16 has the upper surface raising area | region 162, the glue 50 sent to the one side (right side of FIG. 1) of the depth direction of the glue tank 11 by rotation of the glue roll 12 is swirl. Etc., and is smoothly discharged from the glue discharge port 17. Therefore, the paste 50 does not stay due to vortex or the like.

  The glue 50 in the glue tank 11 is transferred onto the outer peripheral surface 12 a of the glue roll 12 by the rotation of the glue roll 12, and the glue 50 on the outer peripheral surface 12 a of the glue roll 12 is transferred onto the outer peripheral surface 13 a of the delivery cylinder 13. The paste 50 on the outer peripheral surface 13a of the transfer cylinder 13 is transferred onto the outer peripheral surface 14a of the plate cylinder 14, and the adhesive 50 on the outer peripheral surface 14a of the plate cylinder 14 in the contact area with the impression cylinder 15 of the substrate 30 is It is applied to the surface of the substrate 30 (the upper surface in FIG. 1).

  On the other hand, the paste 50 discharged from the paste discharge port 17 is collected by a tray 18a provided below the paste tank 11, and the collected paste 50 flows toward the opening 19 of the tray 18a by gravity and opens. It flows into the recovery hose 18b through the portion 19. The glue 50 flowing into the collection hose 18b from the opening 19 is guided by the collection hose 18b and collected in the glue tank 18c. The glue 50 collected in the glue tank 18c is pumped out to the introduction hose 18d by the pump of the glue tank 18c. The glue 50 pumped out from the glue tank 18c is guided above the glue tank 11 by the introduction hose 18d, and is circulated and supplied into the glue tank 11 from the other end of the introduction hose 18d above the glue tank 11. The

  According to the present embodiment as described above, the glue 50 sent to one side of the glue tank 11 by the rotation of the glue roll 12 passes over the current plate 16 provided on the downstream side of the glue roll 12. , And is discharged from the glue discharge port 17. Here, the height of the top portion 163 of the current plate 16 decreases as it approaches the both ends of the glue roll 12 in the axial direction, and the conductance increases as the height of the current plate 16 decreases. The glue 50 becomes easy to flow as it approaches the both ends of 12 axial directions. There is a balance between the characteristic that the flow rate decreases as it approaches the both ends of the glue roll 12 in the axial direction due to the viscosity of the glue 50, and the effect that the glue 50 easily flows as it approaches the both ends of the glue roll 12 in the axial direction. As a result, the flow rate of the paste 50 is made uniform in the axial direction of the glue roll 12. Therefore, at the both ends of the glue roll 12 in the axial direction, the viscosity of the glue 50 increases, and the glue 50 whose desired properties as the glue 50 are impaired adheres to the glue roll 12, or such glue 50 Does not adhere to the glue tank 11 with high strength, and as a result, the supply unevenness in the axial direction of the glue roll 12 is suppressed, and the necessity of cleaning the apparatus due to the adhesion of the glue 50 is reduced. Is done.

  On the other hand, FIG. 7A is a schematic plan view for explaining the flow of the glue in the glue tank in the comparative example in which the height of the top of the current plate 16 ′ is the same in the axial direction of the glue roll 12. is there. FIG. 7B is a schematic front view thereof. In this comparative example, as shown in FIGS. 7A and 7B, the flow rate of the glue 50 decreases as it approaches the both ends of the glue roll 12 in the axial direction due to the viscosity of the glue 50. If the flow rate of the glue 50 decreases at the both ends in the axial direction of the glue roll 12 and the state where the glue 50 does not flow sufficiently continues, the viscosity of the glue 50 increases and the glue 50 whose desired properties as the glue 50 are impaired is obtained. There exists a malfunction that it adheres to the glue roll 12, or such glue 50 adheres to the paste tank 11 with high intensity | strength.

  Moreover, according to this Embodiment, since the height of the top part 163 of the baffle plate 16 becomes low gradually as it approaches the both ends of the axial direction of the glue roll 12 in the front view from the glue roll 12 side, Manufacture of the plate 16 is easy.

  The shape of the rectifying plate 16 may be other shapes as long as the height of the top portion 163 of the rectifying plate 16 decreases as it approaches both ends of the glue roll 12 in the axial direction.

  For example, in the present embodiment, as shown in FIGS. 5A to 5C, the end regions 16 b and 16 c have a trapezoidal shape in a side view from the axial direction of the glue roll 12. However, the present invention is not limited to this, and as shown in FIGS. 8A to 8C, each of the end regions 16b and 16c has a triangular shape in a side view from the axial direction of the glue roll 12. Also good.

  Moreover, in this Embodiment, as shown to Fig.5 (a) thru | or FIG.5 (c), with respect to the depth direction, the position of the edge part at the side of the glue discharge port 17 of the baffle plate 16 and the top part 163a of the center area | region 16a. However, the present invention is not limited to this, and as shown in FIGS. 9A to 9C, the end of the current plate 16 on the side of the glue discharge port 17 is the center region in the depth direction. You may be located in the glue discharge port 17 side further from the top part 163a of 16a.

  Further, in the present embodiment, as shown in FIGS. 5A to 5C, the rectifying plate 16 has a substantially triangular shape in a side view from the axial direction of the glue roll 12, but this Without being limited thereto, as shown in FIGS. 10A to 10C, the rectifying plate 16 may have a substantially semicircular shape in a side view from the axial direction of the glue roll 12. Alternatively, as shown in FIGS. 11A to 11C, the end portions of the upper surfaces 161 a to 161 c of the rectifying plate 16 on the side of the glue roll 12 protrude downward in a side view from the axial direction of the glue roll 12 ( It may have a shape that forms a concave curve (a shape that gradually decreases as the angle formed between the tangent line of the upper surfaces 161a to 161c and the bottom surface of the paste tank 11 approaches the paste roll 12 side). In this case, the glue 50 in the paste tank 11 sent to the current plate 16 side by the rotation of the glue roll 12 is smoothly guided along the upper surfaces 161 a to 161 c of the current plate 16, and vortex or the like is generated on the flow plate 16. Formation can be prevented more effectively.

  Moreover, in this Embodiment, as shown to Fig.5 (a) thru | or FIG.5 (c), the height of the top part 163 of the baffle plate 16 is the axial direction of the glue roll 12 in the front view from the glue roll 12 side. Although it became low in steps as it approached both ends, it is not limited to this, As shown in Drawing 12 (a) thru / or Drawing 12 (c), top part 163 of current plate 16 in front view from the paste roll 12 side May be continuously lowered as it approaches the both ends of the glue roll 12 in the axial direction. In this case, the flow rate of the glue 50 can be made more uniform in the axial direction of the glue roll 12, and as a result, the supply unevenness in the axial direction of the glue roll 12 can be further suppressed.

  In this embodiment, as shown in FIG. 1, a delivery cylinder 13 is disposed between the glue roll 12 and the plate cylinder 14, and the glue 50 on the glue roll 12 passes through the delivery cylinder 13. However, the present invention is not limited to this. For example, the paste roll 12 and the plate cylinder 14 are directly in contact with each other, and the glue 50 on the glue roll 12 is the plate cylinder. 14 may be directly supplied.

DESCRIPTION OF SYMBOLS 10 Paste supply apparatus 11 Paste tank 12 Paste roll (furnisher roller)
12a outer peripheral surface 12b shaft 12c rotational drive unit 13 delivery cylinder 13a outer peripheral surface 13b shaft 13c rotational drive unit 14 plate cylinder 14a outer peripheral surface 14b shaft 14c rotational drive unit 15 impression cylinder 15a outer peripheral surface 15b shaft 15c rotational drive unit 16 rectifying plate 161 upper surface 163 Top portion 16a Central region 161a Top surface 163a Top portion 16b One end region 161b Top surface 163b Top portion 16c Top end portion 161c Top surface 163c Top portion 17 Glue discharge port 18 Glue supply mechanism 18a Receptacle 18b Recovery hose 18c Glue tank 18d Introduction hose 19 Opening 30 Base material 50 Glue

Claims (9)

A glue supply device for supplying glue to a plate cylinder,
A paste tank having a paste discharge port on a part of the bottom;
A glue roll provided substantially horizontally and rotatably so that a part of the outer circumferential surface is disposed in the glue tank and the glue discharge port is located downstream in the traveling direction of the outer circumferential surface in the glue tank. A paste roll adapted to supply the paste in the paste tank to the plate cylinder while rotating;
A current plate provided between the glue discharge port and the glue roll in the glue tank,
With
In the front view from the said glue roll side, the height of the top part of the said baffle plate becomes low as it approaches the both ends of the axial direction of the said glue roll, The glue supply apparatus characterized by the above-mentioned. 2. The glue supply device according to claim 1, wherein the height of the top portion of the current plate in a front view from the glue roll side is gradually reduced as approaching both axial ends of the glue roll. . 2. The glue supply device according to claim 1, wherein a height of a top portion of the current plate is continuously lowered as approaching both axial ends of the glue roll in a front view from the glue roll side. . The glue supply device according to any one of claims 1 to 3, wherein the rectifying plate has an upper surface rising region in which a height of an upper surface becomes higher as approaching the glue discharge port. The glue supply device according to claim 4, wherein the current plate has a substantially triangular shape in a side view from the axial direction of the glue roll. The glue supply device according to claim 4, wherein the current plate has a substantially semicircular shape in a side view from the axial direction of the glue roll. The glue supply device according to any one of claims 1 to 6, wherein a contact angle of an upper surface of the current plate with respect to glue in the glue tank is 40 ° or less. The glue supply device according to any one of claims 1 to 7, further comprising a glue supply mechanism for supplying glue discharged from the glue discharge port to the glue tank. 9. The delivery cylinder according to claim 1, further comprising a delivery cylinder disposed between the glue roll and the plate cylinder and configured to deliver the glue on the glue roll onto the plate cylinder. The glue supply apparatus in any one.

Images