JP2020006380A - Press device and press method - Google Patents

Abstract

To provide a press device and a press method suitable for pressing a thin plate object such as a paper.SOLUTION: A press device 1 is used for forming irregular parts on a thin plate object by pressing the thin plate object which is configured from at least one of a paper or a wood as a material. The press device comprises a feeding mechanism 3 for feeding the thin plate object forward, and a press part in which a roller body 40 comprising a convexed metal mold 65 and a roller body 43 comprising a concaved metal mold 67 are so supported as to be rotatable in direction opposite to each other and are located at positions sandwiching the thin plate object. The convexed metal mold 65 and the concaved metal mold 67 press the thin plate object while sequentially contacting from a rear side in a feed direction of the thin plate object at such a rotating timing that the convex metal mold 65 and the concaved metal mold 67 are so located as to be opposite to each other during rotation of the rotor body 40 and the rotor body 43.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a press apparatus and a press method for forming irregularities on a thin plate made of paper or wood.

Compared to metals and plastics, thin plates made of paper or wood compared to metals or plastics, such as laminated board materials in which thin papers are laminated with an adhesive in between, or woods arranged vertically and horizontally in the same way The laminated plate materials laminated through the above are very hard to extend due to the properties of paper and wood, respectively. For this reason, it is difficult to press and deform easily like a metal plate, for example, to produce a corrugated sheet, or to form a corrugated sheet by extrusion molding like a plastic plate. That is, a thin plate made of paper or wood (hereinafter referred to as a thin plate of paper or the like) is generally used in a flat plate shape.
Patent Document 1 discloses a material in which thin plates are laminated as an example of such a thin plate member such as paper made of paper or wood.

JP 2014-83810 A

However, since a flat plate inevitably has a low stress with respect to a bending force, it is difficult to use a flat plate in applications requiring bending strength. Therefore, there has been a demand for a technique of pressing a thin plate made of paper or the like to form a permanent uneven portion in order to improve a bending force. It is conceivable that the concavo-convex portion forms a continuous continuous concavo-convex shape like a corrugated galvanized sheet.
Here, for example, when pressing a laminated plate material, the biggest problem is that the material is cut or torn because the paper or wood is originally hard to stretch when pressed. In addition, since it is hardened with an adhesive, it becomes even harder to stretch. For example, as shown in FIG. 11, in the case of pressing a wave-like uneven portion shape in which a plurality of pieces are closely arranged in parallel and closely adjacent to each other, there is a high possibility that adjacent wave vertices P are strongly pulled from both sides and torn. . For this reason, it is conceivable that a flat portion is left with an interval of unevenness as in the laminated plate of FIG. 12, and a region that slightly expands when pressed and pulled is as large as possible. However, even if there is an interval between the irregularities, the film may be torn depending on the height of the irregularities.
The present invention provides a suitable press apparatus and press method for pressing such a thin plate such as paper.

In order to achieve the above object, as a means 1, in a pressing device used for forming a concave and convex portion on the thin plate by pressing a thin plate configured of at least one of paper and wood as a material, A feed mechanism for feeding the thin plate body forward, a first press roller having a first pressing die, and a second press roller having a second pressing die supported rotatably in opposite directions to each other; And a press unit disposed at a position sandwiching the first press roller and the second press roller. The first press roller and the second press roller rotate so that the first press die and the second press die face each other during rotation. The timing is adjusted, and the first pressing die and the second pressing die are configured to press the sheet while sequentially contacting the sheet from the rear side in the feed direction of the sheet.
As a result, the following operation is performed in order to form a concave and convex portion by pressing a thin plate made of paper or the like which is hardly stretched as a material. The sheet body is advanced to a predetermined press position between the first press roller and the second press roller by the feed mechanism. There is a gap between the first press roller and the second press roller through which the sheet body can pass, and the first and second pressing dies each engage with the first sheet so as to interfere with the sheet body in the sheet body direction. And the second press roller. Since the first press roller and the second press roller do not come into contact with or interfere with the thin plate at portions other than the first and second press dies, the thin plate is quickly fed forward by the feed mechanism.
The thin plate is pressed by the two pressing rollers sequentially from the front end side where the first pressing die and the second pressing die first come into contact, and the thin plate is formed with concave and convex portions in order from the front to the rear. The feeding mechanism is operated again in synchronization with the completion of the pressing and the separation of the first and second pressing dies, so that the sheet body is fed forward again in a non-pressed state. Thus, in the present invention, the pressed state and the non-pressed state are alternately performed. The feed amount is controlled in synchronization with the next press timing of the first press die and the second press die. By repeating such pressing and feeding, an uneven portion is formed on the thin plate member.
As described above, the pressing performed by the first pressing die and the second pressing die is performed from the front side of the thin plate member toward the rear with the rotation of the first and second press rollers. Then, only the rear side from the pressing position of the thin plate body is in a free state, so that a region on the rear side from the pressed position is secured as a region attracted by the press. On the other hand, when the die is simply moved from the top and bottom by the piston movement, the area in front of the pressed position is also drawn by the press, and thus a material that is not easily stretched causes “cuts” or “cracks”. According to the present invention, a thin plate body with improved strength can be formed even with a thin plate body such as paper that is not easily stretched as a material, for example, without causing a problem such as cutting or breaking of the plate surface. be able to.

Here, "a thin plate composed of at least one of paper and wood" is, for example, a laminated plate material in which thin papers are laminated with an adhesive therebetween, or wood pieces arranged in the vertical and horizontal directions and similarly between the thin plates. A laminated plate material obtained by laminating via an adhesive is preferable, and a sheet material made of paper or wood alone may be used. The thickness also has a relationship with the depth of the concave and convex portions formed by pressing. When the thickness is 10 mm or less, for example, the thickness is about 2 to 5 mm, the uneven portion may be made deeper. If it is made of paper, it will have a cardboard-like appearance. The shape of the “irregularities” is not particularly limited. For example, a shape that is not a discontinuous surface but is gently connected to a flat surface may reduce stress on the material.
The “first press roller” and the “second press roller” can be configured such that, for example, a first press die and a second press die are attached to a housing, or the first press die and the second press die are provided on the outer periphery. . Since the thin plate is pressed between the first pressing die and the second pressing die by rotating, portions other than the first pressing die and the second pressing die are arranged at intervals so as not to interfere with the thin plate during rotation. You.
Further, the interval between the first pressing die and the second pressing die corresponds to the pressing force to the thin plate as it is, and the thinner the closer to the thin plate, the more strongly the thin plate is pressed. The distance between the first press roller and the second press roller is determined by conditions such as the thickness and the shape to be formed.
The directions of rotation of the first press roller and the second press roller are opposite to each other, and the first press die and the second press die need to just face each other in a predetermined phase state. The combination of the first pressing die and the second pressing die may be arranged in one, or may be plural, for example, about 2 to 4 at intervals on the outer periphery. This number is preferable because the uneven portions and the flat portions having no uneven portions are alternately formed. The diameter of the press rollers can be configured even if they are not the same, and they can be opposed to each other even if they are not the same number of the first and second pressing dies. The number of the first and second pressing dies to be performed may not be the same. The shape of the pressing die is not particularly limited as long as the thin plate can be smoothly deformed. A pressing die is a die member that presses a thin plate body and deforms it along its outer periphery. For example, if the thin plate is deformed in a waveform, one of the projections is a hemispherical projection, and the other is a curved surface that is concave outside receiving the projection. It is preferable that the contact portion of the pressing die is configured smoothly without being angular.
Further, the first press roller and the second press roller need to be in contact from the rear side of the thin plate. That is, it is necessary to contact the sheet body from the rear side so as to send the sheet body in the traveling direction. This is because, by contacting from the rear side, only extension from the rear side from the position where the thin plate member is in contact is allowed. Regarding the arrangement relationship between the first press roller and the second press roller, the two rollers may be arranged in any manner up, down, left and right.

The "feed mechanism" may be provided separately from the press section. This is because the thin plate body cannot be fed forward except in the pressed state by the press unit alone. The feed mechanism only needs to be able to feed the thin plate body forward, and the method is not limited. The thin plate may be pushed from the rear (upstream side) or pulled from the front (downstream side). You may pull at the same time as pressing.
In the feed mechanism, the sheet can be sent simply by pushing or pulling, but it must be positively grasped or pinched to prevent the sheet from being shaken by the pressing force at the time of pressing. Is good. As an example of such a feed mechanism, for example, a feed roller can be used to push or pull the thin plate member, or both of the push and pull may be performed. Further, for example, the thin plate member may be transported by being placed on a belt using a belt conveyor device. Further, for example, a thin plate may be grasped and pushed or pulled by using a chuck device of a robot.
The definitions of these terms are the same for the following means.

Further, as means 2, the feed mechanism temporarily stops the feed operation of the thin plate at a timing at which the press section presses the thin plate with the rotation of the first press roller and the second press roller. If the thin plate is stopped in synchronization with the first pressing die and the second pressing die starting to face each other, only the feed of the press roller accompanying the press is performed on the thin plate. This is advantageous because it is not necessary to adjust the speed of both the press roller and the feed mechanism when the thin plate is positively fed by being gripped or pinched.
Further, as means 3, a motor for rotating the first press roller and the second press roller when pressing the thin plate, and the first press roller and the second press after pressing the thin plate. The motor that gives the rotation to give the press roller a different rotation.
Thus, by rotating the first press roller and the second press roller with different motors at the time of pressing and at the time of non-pressing, for example, a motor that rotates at a low speed to generate a large torque at the time of pressing, It is possible to selectively use a high-speed rotation motor for quickly rotating the roller once and preparing for the next press.

As means 4, the first pressing die and the second pressing die extend in a streak shape in a direction intersecting the moving direction of the thin plate member.
That is, it is possible to form the uneven portion long in the width direction of the thin plate member. By forming the long uneven portion in this manner, a thin plate having excellent bending strength can be formed. The “direction intersecting with the moving direction” may be not only a direction orthogonal to the moving direction but also an oblique direction, and the first pressing die and the second pressing die may be straight or curved. In addition, it may not be continuous but may be interrupted on the way. If the first pressing die and the second pressing die are arranged in a straight line so as to be orthogonal to the moving direction, parallel uneven portions are formed at intervals in the thin plate member.
As means 5, the first pressing die has a smooth outer peripheral convex portion, and the second press roller has a smooth inner peripheral concave portion that receives the convex portion of the first pressing die. did.
In other words, it is preferable to use a stamping die in which the thin plate becomes smooth and corrugated when pressed in a convex shape and a concave shape.

Further, as the means 6, the feed mechanism is a pair of rollers, and the thin plate member is sandwiched between the pair of rollers and is fed forward while being held.
If the thin plate is fed forward while being held between the rollers, the thin plate can be sent forward reliably and quickly. The pair of rollers may be arranged upstream, downstream, or on both sides of the press section. For example, simply arranging a pair of rollers upstream of the press unit causes the thin plate to stop after being passed through the rear end of the thin plate without being sent to the press unit. May be arranged downstream of the press section so as to be pulled.
Further, as means 7, the pair of rollers is disposed upstream of the press section, and when the thin plate is pressed between the first pressing die and the second pressing die of the thin plate, The holding state was released.
By disposing the pair of rollers as the feed mechanism upstream of the press unit, it becomes easy to detect the front end position of the thin plate at the press timing when the thin plate advances to the press unit. On the other hand, since the holding of the thin plate by the roller at the timing of pressing restricts the extension of the area behind the pressed position, the plate of the thin plate is pressed by pressing with this configuration. Problems such as cutting or cracking of the surface are less likely to occur.

Further, as means 8, the feed mechanism is a chuck device which advances and retreats along the traveling direction of the thin plate, and adopts a method in which the thin plate is gripped by the chuck and fed forward.
If the thin plate is gripped by the chuck of the chuck device and sent forward as described above, the thin plate can be sent forward reliably and quickly. The chuck device may be located upstream, downstream, or on both sides of the press section. For example, simply arranging the chuck device upstream of the press unit causes the thin plate to stop after being passed through the rear end side of the thin plate without being sent to the press unit. It may be arranged downstream of the section and pulled.
As means 9, the feed mechanism is a belt conveyor device, and the thin plate is placed on a belt and fed forward.
In this manner, if the thin plate is forwarded while being placed on the belt of the belt conveyor device, the thin plate can be forwarded reliably and quickly. This is because the belt surface is in contact with the work at a surface different from the roller, and sufficient friction is given between the belt surface and the work, so that the work is stopped by stopping the belt without pinching. Further, since the thin plate is not pinched by the pair of rollers or gripped by the chuck of the chuck device, it is not necessary to release the holding state even if the thin plate is disposed upstream of the press section. The belt conveyor device may be arranged upstream, downstream, or on both sides of the press section.
The roller device, the chuck device, and the belt conveyor device may be used at the same time, or may be combined as different feed mechanisms on the upstream side and the downstream side.
Further, as means 10, a feed amount when the feed mechanism feeds the thin plate body to the press section can be changed.
This makes it easy to appropriately adjust the strength of the work. As a means for changing the feed amount, for example, it is preferable to control so as to adjust the feed time and the stop time.

Further, as means 11, a pressing method for forming an uneven portion on the thin plate by pressing a thin plate formed of at least one of paper or wood as a material, wherein the thin plate is sent forward. A first press roller provided with a first pressing die and a second press roller provided with a second pressing die are rotatably supported in opposite directions to each other, and are disposed at positions sandwiching the thin plate member; The rotation timing of the first pressing roller and the second pressing roller is adjusted so that the first pressing die and the second pressing die are arranged to face each other during rotation, and the first pressing die and the second pressing die are adjusted. Presses the sheet while sequentially contacting the sheet from the rear side in the feeding direction.
As described above, the pressing performed by the first pressing die and the second pressing die is performed from the front side of the thin plate member toward the rear with the rotation of the first and second press rollers. Then, only the rear side from the pressing position of the thin plate body is in a free state, so that a region on the rear side from the pressed position is secured as a region attracted by the press. On the other hand, when the die is simply moved from the top and bottom by the piston movement, the area in front of the pressed position is also drawn by the press, and thus a material that is not easily stretched causes “cuts” or “cracks”. According to the present invention, a thin plate body with improved strength can be formed even with a thin plate body such as paper that is not easily stretched as a material, for example, without causing a problem such as cutting or breaking of the plate surface. be able to.
As means 12, the feeding operation of the thin plate is temporarily stopped at the timing when the press section presses the thin plate.
When the thin plate is stopped in synchronization with the first press die and the second press die starting facing each other with the rotation of the first press roller and the second press roller, the press is applied to the thin plate. Since only the feed of the press roller is accompanied by the above, it is not necessary to adjust the speed of both the press roller and the feed mechanism when the feed mechanism positively feeds the thin plate body, for example, by grasping or pinching, which is advantageous. is there.

  The inventions shown in the above-described means 1 to 11 can be arbitrarily combined. For example, a configuration may be adopted in which at least a part of the configuration of at least one invention after the unit 2 is added to all or a part of the configuration of the invention shown in the configuration 1. In particular, the invention described in the first aspect may be an invention in which at least a part of the configuration of at least one invention after the second aspect is added. Further, an arbitrary configuration may be extracted from the inventions shown in the means 1 to 11, and the extracted configurations may be combined. The applicant of the present application intends to acquire rights in the invention including these configurations. Further, even if there is a description “in the case of” or “in the case of”, it is not described as a case or a configuration limited to that case. These cases and configurations that are not timely are also disclosed, and there is an intention to acquire rights. In addition, places described with the order are not limited to this order. It also discloses a configuration in which some parts have been deleted or the order has been changed, and the intent is to acquire rights.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a thin plate body of paper etc. which is hard to stretch as a raw material, the unevenness | corrugation part can be formed, without the troubles, such as a board surface being cut or cracked, and the thin plate body which improved the strength. Can be manufactured.

1 is a side view of a press device according to an embodiment of the present invention. The front view showing a part of press equipment of the same embodiment with a virtual line. FIG. 4 is a rear view illustrating a feed mechanism of the press device of the same embodiment. Explanatory drawing explaining the upper and lower roller main bodies which are the press parts of the press apparatus of the same embodiment. FIG. 4 is an explanatory diagram for explaining drive timings of first and second motor devices and phases of a first transmission gear and a second transmission gear synchronized therewith. FIG. 4 is an explanatory diagram illustrating a difference in the interval between concave and convex portions due to a difference in the number of output pulses of a rotary encoder of a work pressed by the press device of the same embodiment. The perspective view of the work after shaping which is an example pressed by the press device of the same embodiment. FIG. 10 is a schematic diagram of another embodiment in which a feed mechanism similar to the upstream feed mechanism 3 is provided on the downstream side as a feed mechanism. FIG. 9 is a schematic view of another embodiment in which a chuck device is provided on the downstream side as a feed mechanism. FIG. 13 is a schematic view of another embodiment in which a belt conveyor device is provided on the downstream side as a feed mechanism. FIG. 4 is an explanatory view for explaining a problem in a case where a wave-shaped uneven portion shape which is continuously adjacent is formed. Explanatory drawing explaining the laminated board which can be shape | molded by applying this invention formed at intervals of unevenness.

Hereinafter, a press device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a press device 1 according to the embodiment. In FIG. 1, the right side is the upstream side when the workpiece W is sent. The press device 1 includes a gantry 2, a feed mechanism 3 is arranged upstream of the gantry 2, and a press mechanism 4 as a press unit is arranged downstream.
First, the mechanical configuration of the feed mechanism 3 will be described. An air cylinder device 6 is provided at an upper position of the frame 5 which is a part of the feed mechanism 3. The piston rod 7 of the air cylinder device 6 extends downward from the cylinder body 8. A slider 9 is mounted on the tip of the piston rod 7. The slider 9 is guided by the linear guide 10 and moves with the vertical movement of the piston rod 7. An upper feed roller device 11 is rotatably attached to the front surface of the slider 9. As shown in FIGS. 1 and 3, the upper feed roller device 11 includes a bearing 12 fixed to the slider 9, a rotating shaft 13 supported by the bearing 12, and a composite provided on the outer periphery of the rotating shaft 13. And a roller body 14 made of rubber.
A small gantry 15 is disposed at a lower position on the front surface of the frame 5, and a lower feed roller device 17 is rotatably attached to the small gantry 15. As shown in FIGS. 1 and 3, the lower feed roller device 17 is provided on a bearing 18 fixed to the small gantry 15, a rotating shaft 19 supported by the bearing 18, and an outer periphery of the rotating shaft 19. And a roller body 20 made of synthetic rubber. As shown in FIG. 3, a feed motor device 21 is provided on a small gantry 22 beside the lower feed roller device 17, and is connected to a rotation shaft 19 via a coupling 23. A first rotary encoder 24 is supported by a bracket 25 attached to the small gantry 15 on a side opposite to the side of the feed motor device 21. The first rotary encoder 24 is connected to the rotation shaft 19 via a coupling 27.
An upstream table 26 on which the work W is placed is disposed upstream of the feed mechanism 3 with the frame 5 interposed therebetween. The upstream table 26 is fixed to the frame 5. The upstream table 26 is arranged at a vertical position such that the lower surface of the workpiece W to be placed is flush with the upper surface of the roller body 20 of the lower feed roller device 17.

  In the feed mechanism 3 having such a configuration, the roller main body 20 of the lower feed roller device 17 is rotated by the feed motor device 21 in a direction for feeding the work W downstream. The upper feed roller device 11 moves up and down by the driving of the air cylinder device 6, descends, and rotates when the roller body 14 comes into contact with the roller body 20. The work W is sent forward (downstream) by being sandwiched between the two roller bodies 14 and 20. Detailed control of the feed mechanism 3 will be described later.

Next, the mechanical configuration of the press mechanism 4 will be described.
As shown in FIGS. 1 and 2, members constituting the press mechanism 4 are separately housed in several cases 30 to 34 on the gantry 2. In FIG. 2, cases 30 to 34 are indicated by virtual lines.
A pair of upper and lower press roller devices 35 and 36 for pressing the work W are supported by support plates 37 arranged on the left and right. As shown in FIG. 2, the upper press roller device 35 includes left and right bearings 38 fixed to a support plate 37, a rotating shaft 39 supported by the bearing 38, and a roller body fixed to the outer periphery of the rotating shaft 39. 40. The lower press roller device 36 includes left and right bearings 41 fixed to a support plate 37, a rotating shaft 42 supported by the bearing 41, and a roller body 43 fixed to the outer periphery of the rotating shaft 42. I have.
The upper press roller device 35 and the lower press roller device 36 are rotationally driven by two different motor devices, first and second motor devices 45 and 46. In the present embodiment, the first motor device 45 and the second motor device 46 are geared motors having the same output. However, in the first motor device 45, the gear ratio is increased to secure a large torque, and the rotation speed is increased. Is decelerated (slowed) from the second motor device 46 (in the present embodiment, the first motor device 45 is 2 rpm, and the second motor device 46 is 12 rpm).

The first and second motor devices 45 and 46 are disposed on the left and right outer sides of the upper press roller device 35 and the lower press roller device 36 and below the gantry 2. The drive of the first and second motor devices 45 and 46 is transmitted to the first and second electromagnetic clutch devices 48 and 49 by a chain 47 as drive transmission means, respectively. The first and second electromagnetic clutch devices 48 and 49 are connected to the left and right ends of the rotating shaft 42 of the lower press roller device 36 via a coupling 50. In FIG. 2, the covers of the electromagnetic clutch devices 48 and 49 are removed. The rotational force generated by driving the first and second motor devices 45 and 46 controls the driving of the first and second electromagnetic clutch devices 48 and 49 so that only one of the rotational forces is lower. The power is transmitted to the rotating shaft 42 of the press roller device 36.
A first transmission gear 51 is fixed to the outer periphery of the rotation shaft 42 between each coupling 50 and the bearing 41. Second transmission gears 53 are fixed to the outer periphery of the rotating shaft 39 of the upper press roller device 35 near the left and right ends, respectively, and are meshed with the corresponding first transmission gears 51. A second rotary encoder 55 is supported on a side (left side in FIG. 2) of the rotation shaft 39 of the upper press roller device 35 by a bracket 56 attached to the case 32. The second rotary encoder 55 is connected to the rotation shaft 39 via a coupling 57.

  As shown in FIGS. 2 and 4, the roller body 40 of the upper press roller device 35 and the roller body 43 of the lower press roller device 36 are each formed at an angle of 90 degrees with respect to the mounting plate 59 having a rounded corner at both ends. Long rectangular parallelepiped mold pedestals 61 and 62 are fixed. The corners of the adjacent mold pedestals 61 and 62 are connected and reinforced by welding. A tubular steel pipe 60 is installed between the mounting plates 59, and the rotating shafts 39 and 42 are inserted therethrough. A convex mold 65 is detachably attached to one of the four mold pedestals 61 fixed to the roller body 40 of the upper press roller device 35 by a screw 69. A balance weight 66 having the same weight as the convex mold 65 is detachably attached to the other three mold pedestals 61 by screws 75. A concave mold 67 is detachably attached to one of the four mold pedestals 62 fixed to the roller body 43 of the lower press roller device 36 by screws 69. A balance weight 68 having the same weight as the concave mold 67 is detachably attached to the other three mold pedestals 62 by screws 75.

The roller body 40 of the upper press roller device 35 and the roller body 43 of the lower press roller device 36 are fed from the upstream in the direction of the arrow in FIG. 1 due to the meshing relationship between the first transmission gear 51 and the second transmission gear 53. The workpiece W is rotated in the direction to be fed downstream while being pressed, and during rotation, the phases of the convex and concave molds 65 and 67 always coincide, and the convex mold 65 is located at the lowermost side of the roller body 40. When moved, the concave mold 67 moves to the uppermost position of the roller body 43 and faces the roller body 43.
The convex mold 65 is a member having a protruded transverse cross-sectional shape disposed along the longitudinal direction of the roller body 40, and is formed into a chamfered trapezoidal shape whose tip is substantially flat and smoothly extends right and left. It has a press part 65a. The concave mold 67 is also a member arranged along the longitudinal direction of the roller body 43, and has a protruding tip 67 a having a chamfered trapezoidal shape corresponding to the press section 65 a of the convex mold 65. Having. Therefore, the concavo-convex portions formed by the convex and concave molds 65 and 67 have a shape close to a trapezoid having no corners as shown in FIG. The interval between the press section 65a of the convex mold 65 and the press section 67a of the concave mold 67 is set in accordance with the thickness of the work W, and is set to be slightly smaller than the thickness of the work W. The distance from the center of rotation of the roller body 40 and the roller body 43 to the center position (P position in FIG. 4) of the interval between the press part 65a of the convex mold 65 and the press part 67a of the concave mold 67 is the same.
The shape of the interval between the press portion 65a of the convex mold 65 and the press portion 67a of the concave mold 67 substantially matches the shape of the concave and convex portions formed on the work W (the press portion of the work W may be slightly stretched after pressing). May not match exactly). The convex mold 65 and the concave mold 67 repeat approaching, facing, and separating by the rotation of the roller bodies 40 and 43, but in the pressed state, the pressing portion 65a of the convex mold 65 and the concave mold 65 are pressed. The interval between the press portions 67a of the mold 67 is kept constant. The portions of the roller bodies 40 and 43 other than the convex mold 65 and the concave mold 67 do not come into contact with the workpiece W during rotation.

At the upper and lower positions on the rear side (upstream side) of the case 30, a photoelectric tube (light emitter and light receiver) 70 as a detecting means for detecting the work W sent from the feed mechanism 3 is provided.
Downstream of the case 30, a downstream table 71 on which the processed work W is placed is disposed.
In the case 32, a proximity switch 73 supported by a bracket 72 is provided. The proximity switch 73 detects a dog 74 fixed to the outer surface of the adjacent second transmission gear 53 at a predetermined rotation position of the second transmission gear 53. This position is determined according to a predetermined phase position of the convex mold 65.

Next, the entire control of the press device 1 for processing the uneven portion on the work W will be described.
The controller MC as control means includes an air cylinder device 6, a feed motor device 21, first and second motor devices 45 and 46, first and second rotary encoders 24 and 55, and electromagnetic clutch devices 48 and 49. , A photoelectric tube 70, a proximity switch 73, and the like.
The controller MC includes a well-known CPU, a memory, a bus, and a real-time clock (RTC) as storage means including a ROM, a RAM, an SSD, and the like. Various programs for executing various functions of the press device 1 are stored in the ROM of the controller MC.
The controller MC drives the air cylinder device 6, the motor devices 21, 45, 46, and the electromagnetic clutch devices 48, 49 based on position information of the first and second rotary encoders 24, 55, the photoelectric tube 70, the proximity switch 73, and the like. Control. Hereinafter, the control contents of the controller MC from the feed mechanism 3 to the press mechanism 4 for forming the uneven portion on the work W will be described in relation to each mechanical configuration. In the embodiment, as an example, the work W is a flat plate having a thickness of 2 mm and a width of 500 mm in a five-layer structure in which three cardboards are alternately stacked (as two layers) with a polyethylene film as an adhesive interposed therebetween. Thin laminated paper was used. Laminated paper is hard and has little flexibility, but can be permanently deformed by applying a predetermined pressing force.

(1) After turning on the main switch, the controller MC drives the feed motor device 21 after a certain time has elapsed. At the same time, the solenoid valve of the air cylinder device 6 is controlled to lower the piston rod 7 of the air cylinder device 6 at the original position. With this operation, the operator sets the work W before processing on the upstream table 26. The set work W is sandwiched between the roller bodies 14 and 20 of the upper and lower feed roller devices 11 and 17 and is sent downstream.
(2) On the basis of a detection signal from the photoelectric tube 70 indicating that the leading end of the work W advanced downstream has been detected, the controller MC temporarily stops driving of the feed motor device 21 and stops feeding of the work W. . Thereby, the displacement reference position of the first rotary encoder 24 corresponding to the rotation amount of the rotation shaft 19 of the lower feed roller device 17 (that is, the feed amount of the work W) is determined. In the present embodiment, for example, as shown in FIG. 6A, in the case where the output pulse number of the first rotary encoder 24 is 117 pulses, the uneven portions are pressed at 100 mm intervals to form the uneven portions. Then, as shown in FIG. 6B, when the number of output pulses of the first rotary encoder 24 is 234 pulses, the concave and convex portions are pressed at intervals of 200 mm to form the concave and convex portions. As will be described later, the delivery can be temporarily stopped by controlling and raising the solenoid valve of the air cylinder device 6, so that the rising timing of the air cylinder device 6 is made earlier as shown in FIG. In this case, the amount of advance is small, and if it is delayed as shown in FIG.
The correlation between the interval between the concave and convex portions and the number of output pulses depends on the interval between the feed mechanism 3 and the press mechanism 4, the rotational speeds of the rotating shafts 13 and 19 of the feed roller devices 11 and 17, and the rotating shaft 39 of the press roller devices 35 and 36. , 42 and the like.
The controller MC drives the feed motor device 21 again. The work W enters the case 30 and is sent between the roller body 40 of the upper press roller device 35 and the roller body 43 of the lower press roller device 36.

(3) Based on the output timing of the detection signal from the photoelectric tube 70, the controller MC drives the first and second motor devices 45 and 46 a predetermined time after the timing. The control of the press mechanism 4 is performed in synchronization with the control of the feed mechanism 3.
FIG. 5 shows the drive timings of the first and second motor devices 45 and 46 and the first transmission gear 51 and the second transmission gear 53 (that is, the positions of the convex mold 65 and the concave mold 67 which are synchronized with the drive timing). It is explanatory drawing explaining the phase of ()). In the present embodiment, when a large torque is required when pressing the work W by the convex mold 65 and the concave mold 67, the first motor device 45 secures the torque, and the work W is not pressed. In this case, the second motor device 46 causes the roller bodies 40 and 43 to idle (non-pressed state). The pressing operation and the non-pressing operation on the work W will be described based on FIG.

A. Initial State and Normal Operation T0 Reference Position in Initial State T0 is an initial state in which the proximity switch 73 detects the position of the convex mold 65. In the initial state, the convex mold 65 is stopped at this position. In the initial state, the controller MC starts driving the first and second motor devices 45 and 46 based on the output timing of the detection signal from the photoelectric tube 70. At the timing of T0, switching to the first electromagnetic clutch device 48 side is performed, and driving of the second transmission gear 53 is performed on the first motor device 45 side.
Note that the controller MC updates the counter of the second rotary encoder 55 at the timing of T0 for each rotation of the second transmission gear 53. Thereby, the displacement of the rotary encoders 24 and 55 can be adjusted. The timing of T0 after the second cycle is the update position of the second rotary encoder 55.
T1 Upper feed roller ascending start position When the controller MC obtains a phase position of 22 degrees from T0 in terms of an angle from the rotary encoder 55, the controller MC drives the air cylinder device 6 to start ascending the upper feed roller device 11. Thereby, the feeding operation of the workpiece W from the feeding mechanism 3 is temporarily stopped. At the same time, pressing of the workpiece W by the convex mold 65 and the concave mold 67 is started. In other words, the work W is pulled in by the press instead of the feed operation.
T2 Upper feed roller lowering start position When the controller MC obtains a phase position of 43 degrees converted from the angle from T1 from the rotary encoder 55, the controller MC drives the air cylinder device 6 to start lowering the upper feed roller device 11. At this stage, the work W is still being pressed.

T3 Pressing Complete Position When the controller MC obtains a phase position of 22 degrees converted from the angle from T2 from the rotary encoder 55, the controller MC switches the electromagnetic clutch devices 48 and 49 to drive the second transmission gear 53 to the second motor device. 46. At this timing, the lowering of the upper feed roller device 11 is completed, and the forward feeding of the work W is restarted. By switching to the second motor device 46, the second transmission gear 53 rotates at a higher speed than at the time of pressing.
T4 Deceleration start position When the controller MC obtains a phase position of 252 degrees from the rotary encoder 55 by converting the angle from T3, the controller MC switches the electromagnetic clutch devices 48 and 49 to drive the second transmission gear 53 again by the first motor. It is the device 45 side. In other words, it is ready to press again. This position is a phase position of 18 degrees when converted from horizontal to angle.
Reference position after T0 2 cycles The controller MC updates the counter of the second rotary encoder 55 when converting the angle from T4 and acquiring the phase position of 22 degrees from the rotary encoder 55. Thereafter, T0 to T4 are repeated, and the concave and convex portions are formed at predetermined intervals by the convex mold 65 and the concave mold 67.

B. When the controller MC determines that the end of the work W has been detected based on the detection signal from the photoelectric tube 70, the controller MC drives the air cylinder device 6 simultaneously with the detection of the next proximity switch 73 to raise the upper feed roller device 11. Let it start. Then, the worker pulls out the processed work W from the downstream table 71 side. FIG. 7 shows an example of the work W on which the concave and convex portions are formed (processed) by the press device 1.

With the configuration described above, the following effects are achieved in the press device 1 of the embodiment.
(1) Instead of pressing the work W in a vertical direction from the vertical direction, the convex mold 65 and the concave mold 67 gradually form a linear shape with the rear side in the traveling direction of the work W opened. Since the pressing is performed, the downstream side of the press position already pulled by the press is not pulled again, and the pressed portion is unlikely to crack or crack.
(2) Since the upper press roller device 35 and the lower press roller device 36 only have a function of sending the work W only during pressing, the work W cannot be sent as it is. Here, since the feed mechanism 3 is provided separately from the press mechanism 4, there is no need to manually feed the work W, which is efficient.
(3) Since it is possible to control at which timing the upper feed roller device 11 is raised (to drive the air cylinder device 6) by looking at the number of output pulses of the first rotary encoder 24, the timing is changed. By doing so, the interval between the concave and convex portions can be easily adjusted.
(4) In the press mechanism 4, the two first and second motor devices 45 and 46 are switched and used, so that the roller bodies 40 and 43 can be rotated at a low speed and a high speed at the time of pressing and at the time of non-pressing, respectively. As a result, efficient processing without waste can be realized.

The present invention can be embodied, for example, in the following modified forms.
(1) The press apparatus 1 according to the above embodiment only discloses a specific structure that can be implemented, and can be implemented in various modified forms. An outline of some change patterns will be described by expanding the above embodiment.
(1-1) FIG. 8 is a schematic diagram illustrating a variation of the press device 1 of the above embodiment. A feed mechanism 81 having the same mechanical configuration as the feed mechanism 3 is disposed downstream of the press mechanism 4. The upper and lower feed roller devices 82 and 83 are supported by a frame 84. The upper feed roller device 82 is moved up and down by an air cylinder device 85.
With such a configuration, when the controller MC detects the end of the work W based on the detection signal from the photoelectric tube 70, for example, the air cylinder device 85 at a predetermined timing based on the number of output pulses from the rotary encoder 55, for example. , And the workpiece W automatically processed by being sandwiched between the feed roller devices 82 and 83 can be pressed and sent to the end.

(1-2) FIG. 9 is also a schematic diagram illustrating a variation of the press device 1 of the above embodiment. A chuck device 91 is provided downstream of the press mechanism 4. The chuck device 91 includes a chuck 92 that performs pneumatic differential operation, a moving piece 93 that holds the chuck 92, and a screw rod 94 to which the moving piece 93 is attached. The screw rod 94 is connected to an output shaft of a motor device 95 disposed at an end. When the output shaft of the motor device 95 is rotated forward and backward, the screw rod 94 rotates forward and backward in synchronization with the rotation. The moving piece 93 moves in the axial direction of the screw rod 94 with the rotation. The motor device 95 and the pneumatic solenoid valve of the chuck 92 are controlled by the controller MC, and the tip of the work W is sandwiched by the chuck 92, and the motor device 95 is driven in the sandwiched state to send the work W to the downstream side. Can be.
(1-3) FIG. 10 is also a schematic diagram illustrating a variation of the press device 1 of the above embodiment. A belt conveyor device 101 is provided upstream of the press mechanism 4. The belt conveyor device 101 includes a head pulley 102, a tail pulley 103, and an endless belt 104 wound around the outer periphery of the head pulley 102 and the tail pulley 103, and a number of rollers 105 that support the belt 104 from below. The head pulley 102 causes the motor device 106 to rotate the belt 104 in the direction of the arrow. The motor device 106 is controlled by the control of the controller MC, and the work W placed on the belt 104 can be sent downstream.

(2) In the above embodiment, for example, the feed mechanism 3 and the press mechanism 4 are clearly divided, but the feed mechanism 3 and the press mechanism 4 are apparently separated, for example, so as to cover the whole with a housing. Even if it does not seem to be present, if it is functionally separated, it has a feed mechanism and a press mechanism 4 (press section).
(3) In the above embodiment, the first and second motor devices 45 and 46 have the same output but different gear ratios, but motors with different outputs may be used in the first place. . Although the chain 47 is used to transmit the drive to the electromagnetic clutch devices 48 and 49, a belt may be used.
(4) In the above embodiment, the controller MC, which is a computer, is used as an example of the control means.
(5) In the above description, the rotary encoders 24 and 55 are used as the detecting means for detecting the rotation amount. However, other rotation amount detecting means such as a rotation angle sensor and a potentiometer may be used.
(6) It is also possible to arrange the above-mentioned chuck device 91 on the upstream side and send it so as to push forward (downstream side) across the rear end of the work W.
(7) The above-mentioned belt conveyor device 101 may be arranged downstream of the press mechanism 4.

The present invention is not limited to the configuration described in the above embodiment. The components of each of the above-described embodiments and modifications may be arbitrarily selected and combined. In addition, any constituent element of each embodiment or modification, and any constituent element described in Means for Solving the Invention or a constituent element of any constituent element described in Means for Solving the Invention May be arbitrarily combined. We also intend to acquire rights in these amendments or divisional applications.
In addition, by applying for a change to a design application, the applicant has the intention to acquire rights for the entire design or partial design. Although the drawings depict the entire device with solid lines, the drawings include not only the entire design but also a partial design claimed for a part of the device. For example, it is a drawing that includes a part of the device as a partial design irrespective of the members as well as a partial design of the device. The part of the device may be a part of the device or a part of the member.

  DESCRIPTION OF SYMBOLS 1 ... Press apparatus, 3 ... Feed mechanism, 4 ... Press mechanism with a press part, 40 ... Roller body as a first press roller, 43 ... Roller body as a second press roller, 65 ... First press die , A concave mold as a second pressing mold, and W a work.

Claims (12)

In a pressing device used to form an uneven portion on the thin plate by pressing a thin plate configured of at least one of paper or wood as a material,
A feed mechanism for feeding the thin plate body forward,
A first press roller provided with a first press die and a second press roller provided with a second press die supported rotatably in opposite directions to each other, and a press portion disposed at a position sandwiching the thin plate; ,
With
The rotation timing of the first press roller and the second press roller is adjusted such that the first press die and the second press die are arranged to face each other during rotation, and the first press die and the second press die are rotated. Wherein the pressing die presses the sheet while sequentially contacting the sheet from the rear side in the feed direction of the sheet.   The press apparatus according to claim 1, wherein the feed mechanism temporarily stops the feed operation of the thin plate at a timing when the press unit presses the thin plate.   A motor for rotating the first press roller and the second press roller when pressing the thin plate, and rotating the first press roller and the second press roller after pressing the thin plate. The press device according to claim 1, wherein a motor that gives a given rotation is different.   The press device according to any one of claims 1 to 3, wherein the first pressing die and the second pressing die extend in a streak shape in a direction intersecting a moving direction of the thin plate member.   2. The method according to claim 1, wherein the first pressing die has a smooth outer peripheral convex portion, and the second press roller has a smooth inner peripheral concave portion for receiving the convex portion of the first pressing die. The press apparatus according to any one of claims 1 to 4.   The press device according to any one of claims 1 to 5, wherein the feed mechanism is a pair of rollers, and is a method of feeding the thin plate body forward while holding the thin plate member between the pair of rollers. .   The pair of rollers are disposed upstream of the press section, and the holding state of the thin plate is released when the thin plate is pressed between the first pressing die and the second pressing die of the thin plate. The press device according to claim 6, wherein:   The said feed mechanism is a chuck apparatus which advances and retreats along the advancing direction of the said sheet body, It is a system which grasps the said sheet body with a chuck and sends it forward, The said mechanism is described in any one of Claims 1-5 characterized by the above-mentioned. Press equipment. The press device according to any one of claims 1 to 5, wherein the feed mechanism is a belt conveyor device, and adopts a method in which the thin plate member is placed on a belt and fed forward.   The press apparatus according to any one of claims 1 to 9, wherein a feed amount when the feed mechanism sends the thin plate body to the press section is changeable. A pressing method for forming an uneven portion on the thin plate by pressing a thin plate formed of at least one of paper and wood as a material,
While feeding the thin plate body forward, the first press roller provided with the first pressing die and the second press roller provided with the second pressing die are supported so as to be rotatable in opposite directions to each other. Place it in the sandwiching position,
The first press roller and the second press roller adjust a rotation timing so that the first press die and the second press die are arranged to face each other during rotation, and the first press die and the second press die are rotated. A pressing die for pressing the thin plate while sequentially contacting from the rear side in the feed direction of the thin plate.   The press method according to claim 11, wherein the press unit temporarily stops the feeding operation of the thin plate at a timing of pressing the thin plate.

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