JP3621562B2 - Road sign sheet crimping device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road sign sheet crimping device for crimping a sign sheet coated with an adhesive on the surface of an aluminum substrate having a plurality of ribs (reinforcing materials) attached in parallel to the back surface.
[0002]
[Prior art]
As the road sign S, as shown in FIG. 13, a sign sheet 2 bonded to the surface of an aluminum substrate 1 with an adhesive B made of thermoplastic is used. Adhesion is performed by heating the adhesive sheet B with the adhesive B applied beforehand on the back surface against the aluminum substrate 1 so that the adhesive B is softened or melted and further cured. A plurality of ribs (reinforcing materials) 1 a are attached to the back surface of the aluminum substrate 1 in parallel.
[0003]
In order for the marker sheet 2 to be pressed against the aluminum substrate 1 and pressure-bonded, the water constituted by a plurality of aluminum square pipes 13 arranged in parallel, called applicator jigs, as shown in FIGS. The aluminum substrate 1 is placed on the flat table 4 so as to be in close contact with the horizontal table 4. The square pipe 13 is surrounded by the frame 4a. Next, the crimping operation procedure by the conventional road sign sheet crimping apparatus will be described as follows.
[0004]
(A) First, the operator measures the vertical and horizontal dimensions of the road sign S and the position of the rib 1a with a measure or the like.
(A) An operator pulls out a part of the square pipe 13 constituting the horizontal table 4 in accordance with the position of the rib 1a of the aluminum substrate 1 so that the aluminum substrate 1 to be placed is in close contact with the horizontal table 4. In the gap formed by the remaining square pipe 13, the rib 1 a that is parallel to the same height as the square pipe 13 is fitted.
(C) The rib 1a is fitted in the gap of the horizontal table 4 and the aluminum substrate 1 is placed on the horizontal table 4.
(D) The horizontal base 4 is covered with the rubber sheet 5 together with the aluminum substrate 1 placed thereon.
(E) The air in the box chamber 6 that is airtightly attached to the frame 4a of the horizontal table 4 is evacuated by the vacuum pump 7 so as to face the back surface of the square pipe 3, and the space covered with the rubber sheet 5 is decompressed. To do. By doing so, the marker sheet 2 is strongly pressed against the aluminum substrate 1 through the rubber sheet 5 by the air pressure above the rubber sheet 5.
(F) Heating by the infrared heater 8, the adhesive B is softened and melted, and further cured, whereby the marker sheet 2 is pressure-bonded to the aluminum substrate 1.
(G) After taking out the road sign S on which the sign sheet 2 is pressure-bonded to the aluminum substrate 1, the fan 9 sucks cold air from the top of the horizontal base 4, cools the horizontal base 4, and presses the next road sign S. Prepare for. Before cooling, the sign sheet 2 for the next road sign S is heated just by being placed on the horizontal base 4 before being pressed against the aluminum substrate 1 and turned up or the adhesive B is heated. This is to avoid softening or melting.
[0005]
[Problems to be solved by the invention]
However, the conventional example of the above road sign sheet crimping apparatus relies on the manual operation for most operations, and therefore, the measurement described in (a) takes a lot of time, and the square pipe described in (a). There is a disadvantage that 13 is as much as 5 kg per bottle, and its handling is quite heavy labor.
Further, when placing the aluminum substrate 1 described in (c) on the horizontal base 4, the aluminum substrate 1 is large and has a considerable weight. When the rib 1 a is fitted into the gap of the horizontal base 4, the aluminum substrate 1 is inserted. There is a disadvantage that a finger is caught between 1 and the horizontal base 4 and there is a risk of injury. Further, the removal of the completed road sign S from the horizontal base 4 described in (ki) is not as much as placing on the horizontal base 4, but a large and heavy one is still a heavy labor.
In addition, the cooling of the horizontal table 4 described in the same (G) also has only an unevenly arranged gap for fitting the rib 1a. Therefore, the ventilation to the horizontal table 4 is poor, and the cooling rate is low. There is a disadvantage that it takes a long time.
As described above, according to the conventional road sign sheet crimping apparatus, the productivity is low, and the cost is high.
[0006]
Accordingly, an object of the present invention is to provide a road sign sheet crimping device that solves the conventional drawbacks and saves labor by mechanizing and automating work that is dependent on manpower. It is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the road sign sheet crimping apparatus according to the first aspect of the present invention is an aluminum in which a plurality of ribs (1a) are attached to the back surface of a sign sheet (2) through an adhesive (B). When pressed against the aluminum substrate (1) by being overlapped with the substrate (1) and heated, a gap is formed in the horizontal base (4) formed by a plurality of square pipes (3) arranged in parallel. A road sign sheet crimping device configured to fit the rib (1a) of the aluminum substrate (1) into the gap and to place the aluminum substrate (1) in close contact with the horizontal base (4). Corresponding to each of the square pipes of the plurality of square pipes (3), the square pipe lifting mechanism (10) for raising and lowering it and supporting it at an arbitrary height, and aluminum mounted on the horizontal base (4) A horizontal row of ribs parallel to the square pipe (3) of the substrate (1) The optical sensor (20) that detects the position of the rib (1a) of the aluminum substrate (1) by being scanned, and the position of the rib (1a) detected by the optical sensor (20) is lowered. And a control device (30) for determining the square pipe (3) to be moved and lowering the determined square pipe (3) via the square pipe lifting mechanism (10).
[0008]
The invention of claim 2 further includes an alarm device (31) in addition to the configuration of the invention of claim 1, and the control device (30) is the detected innermost rib (1a). When the position of the reverse outermost rib (1a) is not within a predetermined range with respect to the square pipe (3) directly below, the outermost end of the aluminum substrate (1) is not directly supported by the square pipe (3) when lowered. And the alarm device (31) is sounded.
[0009]
In addition to the structure of the invention of claim 1 or 2, the invention of claim 3 is a horizontal base (4) on which an aluminum substrate (1) is placed so that the marker sheet (2) is pressed against the aluminum substrate (1). Relative to the rubber sheet (5) covering the aluminum substrate (1) from above, the heating device (8) for heating the sign sheet (2) pressed against the aluminum substrate (1), and the back surface of the square pipe (3) The box chamber (6) airtightly attached to the frame (4a) of the horizontal base (4) surrounding the plurality of square pipes (3), and the air from the box chamber (6), A vacuum pump (7) for depressurizing the space in contact with the sign sheet (2) and the aluminum substrate (1) below the rubber sheet (5), and the heating device (8) below the horizontal table (4) It is characterized by the arrangement.
[0010]
Symbols in parentheses indicate corresponding elements or corresponding matters in the embodiments of the present invention shown in the drawings and described later.
[0011]
According to the first aspect of the present invention, since the position of the rib is detected by the optical sensor, labor and time can be greatly saved as compared with the conventional manual measurement. Further, since the square pipe to be lowered is determined by the control device in accordance with the detected rib position, it is more accurate and quicker than the conventional visual inspection. Further, the determined square pipe is automatically lowered by the square pipe lifting mechanism to form a gap into which the rib can be fitted. Therefore, as in the conventional example, the heavy work of pulling out a 5 kg square pipe per hand is required. This is no longer necessary, reducing the burden on the operator. In addition, a large and heavy aluminum substrate only needs to be placed on a horizontal table with the ribs parallel to the square pipe, and after that, operations such as movement for alignment and fitting of ribs into the gaps of the horizontal table are also required. This is unnecessary, and it is safe because there is no risk of injury due to a finger sandwiched between the aluminum substrate and the horizontal base.
[0012]
In addition, it is necessary to cool the horizontal base whose temperature has increased by heating to soften and melt the adhesive for the next bonding, but it is easy to lower the square pipe by the square pipe lifting mechanism, For example, when every other line is lowered, a plurality of gaps are arranged uniformly compared to the few gaps corresponding to the ribs of the conventional example, and the heat transfer area is large, so the cooling rate increases. In addition, the cooling time is significantly shortened. It is easy to raise and return the square pipe according to the square pipe lifting mechanism.
From the above, it is possible to improve productivity as compared with a conventional road sign sheet crimping apparatus, and accordingly, cost can be reduced.
[0013]
According to the invention of claim 2, in addition to the function and effect of the invention of claim 1, it is determined that the outermost end of the aluminum substrate is not directly supported by the square pipe when the aluminum substrate is lowered from the detection of the rib position. When an alarm device is sounded in advance, if the aluminum substrate is moved slightly to the point where the alarm device does not sound, the outermost end of the aluminum substrate is prevented from being bent downward by pressing the sign sheet. The
[0014]
According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the sign sheet from above is effectively pressed against the aluminum substrate, and a heating device such as an infrared heater is provided. Since it is disposed below the horizontal table, space saving is achieved at the upper part of the horizontal table, and aluminum substrates and the like can be easily taken in and out. Moreover, the direction which has arrange | positioned a heating apparatus below is excellent in thermal efficiency.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the schematic appearance of a road sign sheet crimping apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of the road sign sheet crimping apparatus according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of a road sign sheet crimping apparatus showing a state of being placed on the horizontal table 4, FIG. 3 is an enlarged vertical sectional view of the road sign sheet crimping apparatus showing the square pipe lifting mechanism 10 and the optical sensor 20, and FIG. FIG. 5 is an enlarged vertical cross-sectional view of a road sign sheet crimping apparatus showing a state in which some of the square pipes 3 are lowered from the state of FIG. 3, and FIG. 5 is a block diagram showing an outline of the configuration of the electrical system. In addition, the same code | symbol was attached | subjected to the same part as the prior art example.
[0016]
When the sign sheet 2 is pressure-bonded to the aluminum substrate 1, the overlapped sign sheet 2 is pressed against the aluminum substrate 1 having a plurality of ribs 1a attached to the back surface and heated, whereby the adhesive B previously applied to the back surface is applied. The operation of crimping to the aluminum substrate 1 via is basically the same as the conventional example. Moreover, in order to press the marker sheet 2 against the aluminum substrate 1 from above, a gap is formed in the horizontal base 4 mainly composed of a plurality of square pipes 3 arranged in parallel, and the gap is higher than the height of the square pipe 3. It is the same that the low-profile rib 1a is fitted and the aluminum substrate 1 is placed on the horizontal base 4 so as to be in close contact therewith. However, as will be described later, the gap is conventionally formed by removing the square pipe 3 by the operator, but here it differs greatly in that it is automatically lowered.
[0017]
Further, the horizontal base 4 is provided with a frame 4a surrounding a plurality of square pipes 3 arranged in parallel, and the aluminum substrate 1 is placed so that the superimposed marker sheet 2 is pressed against the aluminum substrate 1. A rubber sheet 5 that covers the horizontal base 4 together with the aluminum substrate 1, a box chamber 6 that is airtightly attached to the frame 4 a of the horizontal base 4 so as to face the back surface of the square pipe 3, and the box chamber 6 It is the same as that of the conventional example that a vacuum pump 7 is provided to evacuate the air and decompress the space below the rubber sheet 5 and in contact with the marker sheet 2 and the aluminum substrate 1. Further, an infrared heater 8 as a heating device for heating the marker sheet 2 and the aluminum substrate 1 and a fan 9 for sucking air for cooling the horizontal table 4 from the gap between the horizontal table 4 through the box chamber 6 are provided. Yes.
[0018]
In particular, the road sign sheet crimping device according to the embodiment of the present invention supports each square pipe 3 at an arbitrary height and lifts and lowers the square pipe lifting mechanism 10 corresponding to each square pipe 3. An optical sensor 20 that detects the position and mounting direction of the ribs 1a of the aluminum substrate 1 by scanning the row of ribs 1a parallel to the square pipes 3 of the aluminum substrate 1 placed on the horizontal table 4 in the horizontal direction. It has. In addition, the control unit 30 determines the square pipe 3 to be lowered in accordance with the detected position and mounting direction of the rib 1 a based on the calculation, and lowers the square pipe 3 determined via the square pipe lifting mechanism 10. It has.
[0019]
Each square pipe lifting mechanism 10 will be described with reference to FIGS. 3 and 4. The square pipe lifting mechanism 10 includes a horizontal straight intermediate rod 11 disposed below and the intermediate rod 11 in the longitudinal direction of the square pipe 3. A cylinder 15 (which uses an air cylinder here) that advances and retreats in a parallel direction, and a cam mechanism 50 that converts the movement of the intermediate rod 11 that advances and retreats along with the movement of the cylinder 15 into the vertical movement of the square pipe 3. In addition, the square pipes 3 are supported by guides so as not to deviate from front to back and from side to side and the intermediate rod 11 from side to side (not shown).
An example of the cam mechanism 50 will be described. A plurality of upper cams 51 attached to the lower surface of the square pipe 3 at intervals in the longitudinal direction and a plurality corresponding to the upper cams 51 attached to the upper surface of the intermediate rod 11. The lower cam 52 is configured to support the square pipe 3 through the upper cam 51 or directly support the square pipe 3. Each upper cam 51 has a substantially trapezoidal cross section, and the rear surface R inclines upward and rearward in FIGS. The corresponding lower cams 52 are also substantially trapezoidal in cross section, but the front surface F is inclined rearward and upward.
[0020]
The optical sensor 20 is attached to the tip of a rod that advances and retreats in the vertical direction of an elevating cylinder 22 that travels along a guide rail 21 that is laid in the horizontal direction on the outer surface of one end of the square pipe 3 of the frame 4a. As shown in FIG. 10 described later, the shape of the rib 1a is fixed, and the optical sensor 20 similarly detects the presence / absence of the upper portion 1a ′ of the rib 1a and controls the on / off signal as shown in FIG. Since the upper sensor 20a to be sent to the device 30 and the lower sensor 20b for detecting the presence / absence of the lower portion 1a ″ of the rib 1a and detecting the ON / OFF signal to the control device 30 as well, both the upper and lower sensors 20a and 20b are turned on. The mounting position and mounting direction of the rib 1a are identified by the control device 30 from the position where only the lower sensor 20b is turned on, and the upper portion 1a ′ of the rib 1a at the end of the aluminum substrate 1. The rib 1a is attached so that the lower portion 1a ″ is on the inner side (the left side in FIG. 10). "Although the rib 1a is mounted so as to come inside (in FIG. 10 corresponds to the right) as shown in FIG. 2, the direction of the ribs 1a attached to the intermediate section is not constant.
[0021]
Further, the elevating cylinder 22 for positioning the height of the optical sensor 20 is driven by a motor M as shown in FIG. An encoder 24 is attached to a timing belt 23 that connects the motor M and the lifting cylinder 22, and a moving distance of the lifting cylinder 22 is detected, and a signal from the encoder 24 is sent to the control device 30.
In addition, a plurality of length detection sensors 60 for detecting the length of the aluminum substrate 1 and a plurality of sides that are provided along the side surfaces of the endmost square pipe 3 and parallel to the longitudinal direction of the rib 1a of the aluminum substrate 1 are applied. A number of guide stoppers 70 for removal are provided.
[0022]
As shown in FIG. 5, the control device 30 includes a CPU 30a, a ROM 30b, and a RAM 30c. The control device 30 includes sensors such as the optical sensor 20 and the detection sensor 60 described above, an encoder 24, an alarm buzzer 31, and a motor M drive. A driver 32, a cylinder driving device 33 for supplying air to the cylinder 15 by opening and closing the valve, an operation board 34, and other driving devices are connected.
[0023]
Next, the operation of the road sign sheet crimping apparatus according to the embodiment of the present invention will be described with reference to a flowchart showing an aluminum substrate setting process which is a part of the control of the control apparatus 30.
As shown in FIG. 2, the rectangular aluminum substrate 1 (FIG. 12) on which the marker sheet 2 is superimposed on the upper surface by the operator is aligned with the side parallel to the longitudinal direction of the rib 1 a with the guide stopper 70 for removal. Since the start switch SW of the operation board 34 (FIG. 5) is turned on when it is placed on the flat table 4 and completed, first, the control device 30 checks on / off of the start switch SW (step 1; The step is omitted in parentheses).
[0024]
When the mounting is completed (the guide stopper 70 is removed at this time) and the start switch SW is turned on, the control device 30 next turns on the motor M to scan the optical sensor 20 in the horizontal direction on the row of ribs 1a. (2) Then, after the optical sensor 20 scans and stores the movement distance of the optical sensor 20 via the signal from the encoder 24 and the on / off signal of the optical sensor 20 corresponding to the movement distance (3), the motor M is turned off. (4)
Next, the control device 30 detects the attachment position and attachment direction of the rib 1a as described above from the read movement distance and on / off signal (5), and corresponds to the detected position and direction of the rib 1a, The square pipe 3 to be lowered is determined (6). Specifically, since the entire rib 1a is lowered, not only the square pipe 3 with which the lower portion 1a "of the rib 1a abuts but directly below the surface on which the rib 1a and the aluminum substrate 1 are fixed (welded). However, the detected rib 1a on the innermost side (the left side in FIGS. 2 and 10) is the detected reference (the reference is in contact with the guide stopper 70 when placed). For the rib 1a on the outermost side (right side in FIGS. 2 and 10) opposite to the above, only the square pipe 3 with which the lower part 1a ″ of the rib 1a abuts is intended to be lowered. When all of the square pipes 3 immediately below are lowered as in the case of the other ribs 1a, the outermost end of the aluminum substrate 1 is not directly supported by the square pipe 3 when lowered, as shown in FIGS. This is because the outermost end is curved downward by the pressing.
[0025]
Next, as shown in FIG. 10, the control device 30 checks whether or not the position of the outermost rib 1a (the right side in FIGS. 2 and 10) is within a predetermined range with respect to the square pipe 3 directly below. Specifically, the position x of the inner line of the rib 1a shown in FIG. ₀ Width X greater than or equal to integer multiple ₀ Value Y to an integer multiple of ₀ (Value Y ₀ Is the width L of the fixing surface of the rib 1a ₁ Distance L from the bottom 1a " ₂ And stable support range value Z of aluminum substrate 1 ₀ It is checked whether or not it is within the following range (7). This determination is made for the purpose of ensuring that the outermost end of the aluminum substrate 1 is directly and stably supported by the square pipe 3 when descending, and if the position x is not within the range. As a result of the lowering of the square pipe 3 with which the lower part 1a ″ of the rib 1a abuts, there is no square pipe 3 supporting the outermost end of the aluminum substrate 1, or even if there is little, the support becomes unstable. This is to prevent such an event in advance because the outermost end portion is bent downward by the pressing of the sign sheet 2. In the present embodiment, L ₁ = 50mm, L ₂ = 26 mm, Z ₀ = Y from 10mm ₀ = 14 mm. X ₀ = 40mm, L ₃ = 3mm, L ₄ = 55 mm.
[0026]
If the position x of the inner line of the rib 1a is within the range in step 7, the control device 30 determines that the outermost end of the aluminum substrate 1 is stably supported by the square pipe 3 when descending, and step 6 The square pipes 3 determined in (1) are lowered simultaneously by the height of the rib 1a by the square pipe lifting mechanism 10 (8). As a result, a gap into which the rib 1a can be fitted is formed. As shown in FIG. 9, the aluminum substrate 1 is lowered together with the square pipe 3, and the back surface is in close contact with the upper surface of the horizontal table 4.
If the position x is not within the range in step 7, the control device 30 determines that the outermost end of the aluminum substrate 1 is not directly supported by the square pipe 3 but is bent by pressing when lowered, and the alarm buzzer 31 operates. It is sounded automatically until the stop button BT on the operation board 34 is turned on by the user (9 to 11). By this alarm, the operator moves the aluminum substrate 1 slightly in the left-right direction, and turns on the start switch SW again (1), whereby the above processing contents are repeated and the outermost end portion of the aluminum substrate 1 is lowered again. It can be checked whether or not is directly supported by the square pipe 3.
[0027]
Since the check processing in steps 7 to 11 is determined in advance before the aluminum substrate 1 and the square pipe 3 are lowered, it is not necessary to perform an extra descent and ascending motion as compared with the case after the actual descent. So it is efficient.
[0028]
When the aluminum substrate setting process as described above is completed, the horizontal base 4 on which the aluminum substrate 1 is placed is covered with a rubber sheet 5 together with the aluminum substrate 1 and the vacuum pump 7 is activated to remove the air in the box chamber 6. The space below the rubber sheet 5 and in contact with the marker sheet 2 and the aluminum substrate 1 is decompressed. By doing so, the marker sheet 2 is strongly pressed against the aluminum substrate 1 through the rubber sheet 5 by the air pressure above the rubber sheet 5. Then, the infrared heater 8 is lowered to approach the upper side of the rubber sheet 5, and the marker sheet 2 and the aluminum substrate 1 are heated via the rubber sheet 5. By doing so, the adhesive agent B softens and melts and further hardens, whereby the sign sheet 2 is strongly pressed against the aluminum substrate 1 and the road sign S is completed.
[0029]
Next, the infrared heater 8 is raised, the rubber sheet 5 is removed, and the road sign S is taken out. Then, as shown in FIG. Thus, for example, the square pipes 3 are lowered every other line, the fans 9 are started, the cold air is sucked from the formed gaps, and the horizontal table 4 is efficiently cooled.
With this cooling, it took about 20 minutes to reduce the surface temperature of the square pipe 3 to about 40 (° C.), which previously took about 40 minutes.
[0030]
In this embodiment, the infrared heater 8 serving as a heating device is disposed above (solid line in FIG. 9), but the infrared heater 8 may be disposed below the horizontal base 4 (dotted line in FIG. 9). ). According to this, space saving of the upper part of the horizontal base 4 is achieved, and the aluminum substrate 1 and the like can be easily taken in and out. Moreover, the direction which arrange | positioned the infrared heater 8 below is excellent in thermal efficiency, without passing the rubber sheet 5. FIG.
[0031]
【The invention's effect】
According to the first aspect of the present invention, since the rib position is detected by the optical sensor, labor and time can be greatly saved as compared with the conventional manual measurement. Further, since the square pipe to be lowered is determined by the control device in accordance with the detected rib position, it is more accurate and quicker than the conventional visual inspection.
Further, the determined square pipe is automatically lowered by the square pipe lifting mechanism to form a gap into which the rib can be fitted. Therefore, as in the conventional example, the heavy work of pulling out a 5 kg square pipe per hand is required. This is no longer necessary, reducing the burden on the operator. In addition, a large and heavy aluminum substrate only needs to be placed on a horizontal table with the ribs parallel to the square pipe, and after that, operations such as movement for alignment and fitting of ribs into the gaps of the horizontal table are also required. This is unnecessary, and it is safe because there is no risk of injury due to a finger sandwiched between the aluminum substrate and the horizontal base.
[0032]
In addition, it is necessary to cool the horizontal base whose temperature has increased by heating to soften and melt the adhesive for the next bonding, but it is easy to lower the square pipe by the square pipe lifting mechanism, For example, when every other line is lowered, a plurality of gaps are arranged uniformly compared to the few gaps corresponding to the ribs of the conventional example, and the heat transfer area is large, so the cooling rate increases. In addition, the cooling time is significantly shortened. It is easy to raise and return the square pipe according to the square pipe lifting mechanism.
From the above, it is possible to improve productivity as compared with a conventional road sign sheet crimping apparatus, and accordingly, cost can be reduced.
[0033]
According to the invention of claim 2, in addition to the function and effect of the invention of claim 1, it is determined that the outermost end of the aluminum substrate is not directly supported by the square pipe when the aluminum substrate is lowered from the detection of the rib position. When an alarm device is sounded in advance, if the aluminum substrate is moved slightly to the point where the alarm device does not sound, the outermost end of the aluminum substrate is prevented from being bent downward by pressing the sign sheet. The
[0034]
According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the sign sheet from above is effectively pressed against the aluminum substrate, and a heating device such as an infrared heater is provided. Since it is disposed below the horizontal table, space saving is achieved at the upper part of the horizontal table, and aluminum substrates and the like can be easily taken in and out. Moreover, the direction which has arrange | positioned a heating apparatus below is excellent in thermal efficiency.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic appearance of a road sign sheet crimping apparatus according to an embodiment of the present invention.
2 is a cross-sectional view of a road sign sheet crimping apparatus according to an embodiment of the present invention showing a state in which an aluminum substrate 1 is placed on a horizontal base 4 shown in FIG.
FIG. 3 is an enlarged longitudinal sectional view of a road sign sheet crimping apparatus showing the square pipe lifting mechanism 10 and the optical sensor 20;
4 is an enlarged vertical cross-sectional view of a road sign sheet crimping apparatus showing a state in which some of the square pipes 3 are lowered from the state of FIG. 3;
FIG. 5 is a block diagram showing a schematic configuration of an electric system.
FIG. 6 is a flowchart showing the contents of an aluminum substrate setting process of the control device 30;
FIG. 7 shows a road sign sheet according to an embodiment of the present invention, showing a case where the outermost end of the aluminum substrate 1 is not supported by the square pipe 3 when lowered with the aluminum substrate 1 placed on the horizontal base 4; It is a cross-sectional view of the crimping apparatus.
8 is a cross-sectional view showing a state in which a crimping operation of a marker sheet is performed at a position where the aluminum substrate 1 shown in FIG. 7 is placed.
9 is a cross-sectional view showing a state in which a sign sheet is being crimped at a position where the aluminum substrate 1 shown in FIG. 2 is placed.
10 is an enlarged cross-sectional view showing a rib 1a fixed to the outermost end portion of the aluminum substrate 1. FIG.
11 is a cross-sectional view showing a state in which the cooling operation of the horizontal table 4 is performed. FIG.
12 is a perspective view showing an example of a road sign S. FIG.
FIG. 13 is a cross-sectional view of a road sign sheet crimping apparatus according to a conventional example, showing a state in which a square pipe 13 corresponding to the rib 1a of the aluminum substrate 1 is removed.
FIG. 14 is a cross-sectional view showing a state in which a bonding operation according to a conventional example is performed.
[Explanation of symbols]
1 Aluminum substrate
1a rib
2 Marking sheet
Three square pipe
4 Horizontal stand
4a Frame
5 Rubber sheet
6 box room
7 Vacuum pump
8 Infrared heater
9 fans
10 Square pipe lifting mechanism
11 Intermediate rod
13 square pipe
15 cylinders
20 Light sensor
21 Guide rail
22 Lifting cylinder
24 Encoder
30 Control device
30a CPU
30b ROM
30c RAM
31 Alarm buzzer
32 Driver for motor M drive
33 Cylinder drive
34 Operation board
50 cam mechanism
51 upper cam
52 Lower cam
60 Length detection sensor
70 Guide stopper for removal
B Adhesive
S road sign
M motor

Claims (3)

A horizontal base made up of a plurality of square pipes arranged in parallel when crimping the aluminum sheet by pressing and heating the sign sheet over the aluminum board with multiple ribs attached to the back side through an adhesive. A road sign sheet crimping device configured to form a gap in the gap and fit the aluminum board into the gap and place the aluminum board in close contact with the horizontal base,
Corresponding to each square pipe of the plurality of square pipes, a square pipe lifting mechanism for raising and lowering the square pipe and supporting it at an arbitrary height, and a rib row parallel to the square pipe of the aluminum substrate placed on the horizontal base The optical sensor for detecting the position of the rib of the aluminum substrate by being scanned horizontally, and the angle pipe to be lowered corresponding to the position of the rib detected by the optical sensor are determined, and the determined angle A road sign sheet crimping device, comprising: a control device that lowers the pipe via the square pipe lifting mechanism. The control device further includes an alarm device, wherein the control device detects the position of the outermost rib opposite to the reference innermost rib if the position of the outermost rib is not within a predetermined range with respect to the square pipe directly below, and the aluminum substrate when lowered 2. The road sign sheet crimping device according to claim 1, wherein the outermost end of the road is not directly supported by the square pipe and the alarm device is sounded. A rubber sheet for covering the horizontal base on which the aluminum substrate is placed together with the aluminum substrate from above so that the marker sheet is pressed against the aluminum substrate, a heating device for heating the marker sheet pressed against the aluminum substrate, and a back surface of the square pipe And a space that is airtightly attached to a frame of a horizontal base that surrounds a plurality of square pipes, and a space that draws air from the chamber and is in contact with the sign sheet and the aluminum substrate below the rubber sheet The road sign sheet crimping device according to claim 1, wherein the heating device is disposed below a horizontal table.

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