JP2507439Y2 - Coating film thermocompression bonding equipment for structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a thermocompression bonding apparatus for thermocompression bonding a coating film, and more particularly to a device for thermocompression bonding the coating film on the outer peripheral surface of a cylindrical structural member of a structure.

[Prior art]

In recent years, as synthetic resin materials have been used in a wide range of fields, various coating techniques for synthetic resin materials have been developed.

For example, the cable that supports the bridge girder of a cable-stayed bridge has a coating part made of high-density polyethylene for weather resistance and rust prevention. No coating was applied to the cable coating, but a primer was developed to improve the adhesion of the high-density polyethylene coating, and after applying the primer to the coating, the primer coating was thermocompression bonded. It is now possible to apply primer and topcoat paint.

On the other hand, when painting on the structural members of existing structures such as the above-mentioned bridges, a scaffold for painting work was constructed near the structure and the painting was done by acquisition (for example, the actual development Sho 58-124.
271 gazette).

[Problems to be solved by the device]

When painting the cable of the above cable-stayed bridge, if you try to build a scaffold for painting work as in the past, you must build a scaffold on a large scale, There is a problem that the cost increases and that it takes a lot of work time to construct and dismantle the scaffold.

Further, the cable is columnar and is stretched at an angle, and when the primer coating film applied to the coating portion of the cable is thermocompression bonded, the temperature / pressure
It is necessary to perform the work under a predetermined condition such as time, and it is very difficult to perform the thermocompression bonding under such a condition by manual work.

An object of the present invention is to provide a coating film thermocompression bonding device for a structure, which is excellent in thermocompression bonding workability.

[Means for solving the problem]

A structure coating film thermocompression bonding device according to the present invention is a thermocompression bonding device for thermocompression bonding a coating film on an outer peripheral surface of a slanted or horizontal columnar structural member of a structure, which is provided on both sides of the structural member. A frame that is configured to be divisible and that is disposed so as to surround a predetermined length portion of the structural member, and is provided at one end side portion of the frame in the longitudinal direction of the structural member, and the frame is the structural member. A plurality of guide rollers that support the structural member so as to be movable along, and a heating unit that is provided at the other end of the frame and that heats the outer peripheral surface of the structural member.
A pressure-applying rotation roller provided on the frame between the guide roller means and the heating means, urged by the outer peripheral surface of the structural member and rotatably supported so as to roll on the outer peripheral surface of the structural member; A rotary drive means for rotating the pressure roller and a transfer means for moving the frame along a structural member via a guide roller.

[Action]

According to the structure coating apparatus of the present invention, the frame is configured to be dividable, and the columnar structural member having a slanted or horizontal structure is provided at one end side portion of the frame in the longitudinal direction of the structural member. Since a plurality of guide rollers are provided so as to be movable along the frame, the frame can be movably supported and arranged on the structural member.

Heating means is provided on the other end of the frame,
The frame between the guide roller and the heating means is provided with a crimping rotation roller rotatably supported so as to roll on the outer peripheral surface of the structural member while being pressed and urged by the outer peripheral surface of the structural member. Further, since the rotation driving means for rotating the pressure roller is provided, the outer peripheral surface of the structural member is heated by the heating means while moving the frame along the structural member by the transfer means. Melt the coating,
The portion can be continuously pressure-bonded by a pressure-bonding rotary roller which is rotationally driven by the rotary drive means.

As described above, since the frame including the heating unit, the rotation roller for pressure bonding, and the rotation driving unit is movably supported by the structural member and arranged, the construction of a large-scale scaffold for thermocompression bonding and the like. There is no need to dismantle, and it is possible to greatly reduce the work time and cost. The thermocompression bonding work is automatically performed over the entire length of the structural member based on a predetermined thermocompression bonding condition by a thermocompression bonding device without manual labor, so that safety and work efficiency can be significantly improved.

[Effect of device]

According to the structure coating apparatus of the present invention, as described above in [Operation], there is no need to construct or dismantle a large-scale scaffold, etc., so that the cost for that can be reduced, Since the thermocompression bonding work can be automatically performed without manual labor, it is possible to obtain effects such as improvement in safety and work efficiency.

〔Example〕

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

In this example, when applying a coating for enhancing the appearance to the outer peripheral surfaces of a plurality of cable bodies 3 stretched from the tower body 1 of the cable-stayed bridge B shown in FIG. 1 to the bridge girder 2. ,
The present invention is applied to a thermocompression bonding apparatus for thermocompression bonding a primer coating film applied in advance.

First, the cable main body 3 will be briefly described. As shown in FIG.
In order to enhance the weather resistance and rustproofness of the cable body 3, the covering portion 5 is a tubular body made of high-density polyethylene, which is formed by bundling dozens of Has been formed. This covering part 5 is formed seamlessly and integrally in a cable manufacturing stage. Of the multiple cable bodies 3 stretched over bridge B, the largest diameter is about 20 cm
And the longest one reaches about 200m and the height of tower 3 is about
It is stretched over bridge girder 2 from the position of 100m.

Next, the steps of the painting work for applying the coating to the outer peripheral surface of the cable body 3 will be described with reference to FIG.

First, in the cleaning step, the outer peripheral surface of the cable main body 3 is cleaned to remove deposits and the like, and in the next primer step, a primer is applied as an undercoat to the outer peripheral surface. Since the covering portion 5 made of high-density polyethylene is inferior in adhesiveness to the paint,
A heat-melting primer is used as the primer, and is brought into close contact with the coating portion 5 by thermocompression bonding as described later. After the primer is applied, the primer is dried in the drying step, and the primer applied in the next thermocompression bonding step is heated and melted and heated to bring the primer into close contact with the coating portion 5. After that, the coating portion 5 is dried in a drying step, and a coating material having weather resistance and coloring is applied to the outer peripheral surface of the cable body 3 in the next top coating step.

In the above-mentioned painting work, the thermocompression bonding apparatus of this embodiment is used in the thermocompression bonding process.

The thermocompression bonding apparatus includes a thermocompression bonding unit H that is movably mounted on the cable main body 3, a power feeding unit E that supplies power to the thermocompression bonding unit H, and a thermocompression bonding unit H that moves along the cable main body 3. And a moving device M.

The transfer device M is for driving the thermocompression bonding unit H arranged in the cable body 3 to move it along the cable body 3, and the bridge girder 2 is equipped with a winder 8 equipped with a motor with a speed reducer. 9 is mounted on the base member 10, the bracket 11 is attached to the bridge girder 2 at the end of the cable body 3 on the bridge girder 2 side, and the pulley 11 is rotatably provided on the bracket 11 and the cable body 3 A bracket 13 is attached to the tower body 1 at the end of the tower body 1 side, a pulley 14 is rotatably provided on the bracket 13, and a bracket 15 is attached near the bridge girder 2 of the tower body 1 to the bracket 15. The pulley 16 is rotatably provided.

A first rope 17 is wound around the winder 8, the first rope 17 is extended below the cable body 3 via a pulley 12, and its end is a bracket at the rear end of the thermocompression unit H.
The second rope 19 is attached to the winder 9 and is wound around the winder 9. The second rope 19 is extended below the cable body 3 via the pulleys 14 and 16, and the end thereof is a thermocompression bonding unit. It is attached to the bracket 20 at the front end of H.

In the transfer device M, the winders 8 and 9 are operated and controlled by a control device (not shown), and the first rope 17 and the second rope 19 are always held in a tensioned state during the painting operation.

When the thermocompression bonding unit H is moved along the cable body 3 to the tower body 1 side, when the winder 9 is driven to rotate counterclockwise, the second rope 19 is taken up by the winder 9. The thermocompression bonding unit H is driven to the tower 1 side, while the first rope 17 is pulled by the thermocompression bonding unit H and fed out from the winder 8.

When moving the thermocompression bonding unit H to the bridge girder 2 side along the cable main body 3, the thermocompression bonding unit H is moved in the reverse operation by rotating the winder 8 clockwise. Move to the side.

The power supply unit E is for supplying the power cable 21 following the movement of the thermocompression bonding unit H, and the thermocompression bonding unit H is provided on the bridge girder 2 on the lower end side of the cable body 3.
A hoisting machine 22 and an air compressor 23, around which a power cable 21 for supplying electric power, etc., is placed, and the power cable 21 is supported by a suspending tool 21a provided in the cable body 3 to support the cable body 3 Of the thermocompression-bonding unit H is connected to the power supply port at the rear end of the thermocompression-bonding unit H.
The power cable 21 is composed of a plurality of power supply lines, a plurality of control lines from the control device, and a compressed air supply hose from the air compressor 23.

Next, the thermocompression bonding unit H will be described with reference to FIGS. 3 and 4.

The thermocompression bonding unit H has a frame 24 as a machine frame.
A heating mechanism 25 provided in the front part of the frame 24, a crimping mechanism 26 provided in the middle of the frame 24, and a crimping mechanism 26.
The rotating rollers 43 and 48 are configured to include a rotating mechanism 27 for rotating the rotating rollers 43 and 48 around the axis of the cable body 3, and a guide mechanism 28 provided on the rear portion of the frame 24.

The frame 24 is configured so as to be divided into an upper frame 29 and a lower frame 30 with a mating surface indicated by the line XX in FIG. 4 as a boundary. When the thermocompression bonding unit H is attached to the cable body 3, The upper and lower sides of the cable body 3 are arranged so as to be sandwiched between the upper frame 29 and the lower frame 30, respectively, and the mating surfaces are used to connect the upper frame 29 and the lower frame 30 with bolts to attach them to the cable body 3.

The heating mechanism 25 is for heating and melting the primer coating film applied to the outer peripheral surface of the cable body 3, and is a frame.
The frame members 29a and 29b of the upper frame 29 and the frame member 30 of the lower frame 30 shown in FIG.
A pair of front and rear support members 31 are provided inward at the outer circumferential side of the cable main body 3 at the positions a and 30b, respectively, and the inside of each pair of support members 31 is open. A reflecting member 32 having a parabolic or trapezoidal cross section is attached with its both ends supported by front and rear support members 31.

In order to generate far infrared rays in the vicinity of the bottom of each reflection member 32, a nichrome wire tube 33 coated with a ceramic material is installed in the front-rear direction, and the power supply line of the power cable 21 is connected to the nichrome wire tube 33. Heated nichrome wire tube 33
Far-infrared rays radiated from the device are radiated to the outer peripheral surface of the cable body 3 by the reflecting member 32 without leaking.

The crimping mechanism 26 presses the primer coating film melted by the heating mechanism 25 onto the outer peripheral surface of the coating portion 5 of the cable main body 3 to perform thermocompression bonding, and includes the frame member 29a of the upper frame 29 and the lower frame 30. Semicircular plate members 34 are attached to the center of the frame member 30a in the front-rear direction, and the shaft members 35 are attached to the left and right parts of the upper and lower plate members 34, respectively.
A roller 36 is rotatably attached to each shaft member 35, and a ring sprocket 37 rotatably circumscribes the upper and lower four rollers 36 in the vicinity of the front side of the plate member 34. The split sprocket 37a and the lower half split sprocket 37b are provided with a splittable ring sprocket 37.

Further, semicircular plate members 34 are attached to the front portions of the frame members 29a and 30a, respectively, and the shaft members 35 are fixed to the left and right portions of the upper and lower plate members 34, respectively. A roller 36 is rotatably provided on each shaft member 35,
A ring member 38 rotatably circumscribing the four upper and lower rollers 36 and facing the ring sprocket 37 is provided.
The ring member 38 can be divided into an upper half split ring member 38a and a lower half split ring member 38b.

An arm member 39 is fixedly attached at its end portions to the ring sprocket 37 and the ring member 38 at four circumferentially equally positions between the ring sprocket 37 and the ring member 38, and the arm member 39 is attached to the front portion of each arm member 39. Three sliding holes 39a at regular intervals
A rod 41 fixed to the holding member 40 is slidably inserted into each sliding hole 39a, and a pivot shaft 42 mounted in the holding member 40 in the front-rear direction is made of metal or hard synthetic resin. A rotary roller 43 made of a metal is rotatably provided, and a compression coil spring 44 for biasing the rotary roller 43 to the outer peripheral surface of the cable body 3 is provided between the arm member 39 and the holding member 40 so as to be externally mounted on each rod 41. Has been.

Three sliding holes 39b are formed in the rear portion of each arm member 39 at predetermined intervals, and a rod 46 fixed to a holding member 45 is slidably inserted into each sliding hole 39b, and the holding member 45 is moved forward and backward. A rotation roller 48, which is slightly shorter than the rotation roller 43, is rotatably provided on the pivot shaft 47 mounted in the direction, and the rotation roller 48 is provided between the arm member 39 and the holding member 45 on the outer peripheral surface of the cable body 3. A compression coil spring 49 for pressing and urging is provided on each rod 46 as an exterior.

Explaining the rotation mechanism 27, the frame member 29
On the upper surface of the middle part of a, a motor 50 with a reducer is attached with its output shaft facing forward and backward, a sprocket 51 is attached to its output end, and a sprocket 51 and a ring sprocket 37 are attached to a frame member 29a. A chain 53 is mounted via an auxiliary sprocket 52 as a tensioner provided.

In the rotation mechanism 27 configured as above, the motor 50
When it is driven to rotate, the ring sprocket 37 is driven by the chain 53 and guided by the roller 36 to rotate around the axis of the cable body 3, and the ring member 38 rotates while being guided by the roller 36 via the arm member 39. , An arm member 39 mounted on the ring sprocket 37 and the ring member 38
Rotating rollers 43/48 mounted on the holding members 40/45 by rotating
Rolls on the outer peripheral surface while being pressed against the outer peripheral surface of the cable body 3.

The frame member 29c of the upper frame 29 and the frame member 30c of the lower frame 30 are provided with a total of four cooling nozzles 54 for cooling the cable body 3 after thermocompression bonding, and each cooling nozzle 54 has a power source. The compressed air supply hose of cable 21 is connected.

Explaining the guide mechanism 28, the frame member
A pair of pivot members 55 are attached to the rear portion of the frame member 30a and the rear portion of the frame member 30a so as to face inward.
A guide roller 57 is attached to the pivot shaft 56 fixed to the front and rear of the
Is rotatably provided, and the upper and lower guide rollers 57 rotatably contact the outer peripheral surface of the cable body 3 to support the thermocompression bonding unit H on the cable body 3 and
When driven by the first rope 17 or the second rope 19, it can be moved along the cable body 3 via the guide roller 57.

Since the covering portion 5 of the cable body 3 is made of high-density polyethylene, static electricity is easily generated on the outer peripheral surface thereof, and in order to prevent dust and the like from adhering to the outer peripheral surface due to the static electricity, the front side of the frame 24 is prevented. And brackets 58 projecting from the rear side respectively, are provided with static elimination nozzles 59, and a device accommodating portion provided at an intermediate portion on the lower end side of the lower frame 30 for supplying charged air to each static elimination nozzle 59. 60 is a charging device
61 is installed. Power cable 21 for charging device 61
The compressed air supply hose is connected and the compressed air supplied to the charging device 61 is charged in the charging device 61 and supplied to each static elimination nozzle 59, and the charged air is supplied from the front and rear static elimination nozzles 59 to the cable main body 3 The static electricity on the outer peripheral surface is removed by spraying on the outer peripheral surface.

Further, a balance weight 62 is attached to the rear portion of the lower frame 30 on the lower end side, and the balance weight 62 keeps the posture of the thermocompression bonding unit H attached to the cable body 3.

The operation of the thermocompression bonding device thus configured will be described below.

First, at the time of entering the cleaning step, instead of the thermocompression bonding unit H of the thermocompression bonding device H, a cleaning / painting unit having a frame that is dividable like the thermocompression bonding unit H is attached to the cable body 3. Then, the cleaning / painting unit is moved to the uppermost part of the cable body 3 by the transfer device M.

The cleaning of the outer peripheral surface of the cable body 3 is continuously performed by moving the cleaning / painting unit by the transfer device M at a predetermined speed from the uppermost portion to the lower portion of the cable body 3,
When the cleaning / painting unit reaches the bottom of the cable body 3, the cleaning process is completed.

Next, when entering the primer step, replace the cleaning nozzle and brush provided in the cleaning / painting unit with the painting nozzle and brass, and replace the tank containing the cleaning liquid with the tank containing the primer. Attach to the cleaning / painting unit.

After that, the cleaning / painting unit is moved to the uppermost portion of the cable body 3, and the primer is applied to the outer peripheral surface of the cable body 3 while moving the cleaning / painting unit downward along the cable body 3 as in the cleaning process. . After applying the primer, the primer is dried for a predetermined time in the next drying step.

In the next thermocompression bonding process, the cleaning / painting unit is switched to the thermocompression bonding unit H. In the thermocompression bonding process, the thermocompression bonding unit H
Is moved from the lowermost part to the upper part of the cable body 3 at a predetermined speed, and the primer coating film applied to the outer peripheral surface of the cable body 3 is melt-pressed onto the coating portion 5 as described below.

First, as shown in FIG. 3, after the thermocompression bonding unit H is attached to the lower portion of the cable body 3, the nichrome wire tube 33 of the heating mechanism 25 is supplied with power, and the far infrared rays are sufficiently radiated from the nichrome wire tube 33. Heat to a ready state.

Next, the motor 50 is rotationally driven to press and roll the rotary rollers 43 and 48 onto the outer peripheral surface of the cable body 3, and the transfer device M is driven to move the thermocompression bonding unit H to the cable body 3 at a predetermined speed. Along the upward direction a predetermined speed (about 0.
Move at 3m / min). During this time, the infrared rays emitted from the nichrome wire tubes 33 to the cable body 3 melt the primer coating film on the outer peripheral surface of the cable body 3, and in the molten state, the outer peripheral surface of the cable body 3 continues to rotate and roll. Since the pressure is applied by the rotating rollers 43 and 48, the primer is uniformly pressed against the covering portion 5, and the pressed portion is cooled by the compressed air blown from the cooling nozzle 54 provided on the rear side of the pressing mechanism 26.

In this way, thermocompression bonding of the primer coating film of the cable main body 3 is continuously performed, and when the thermocompression bonding unit H reaches the uppermost portion of the cable main body 3, the thermocompression bonding process is completed and the transfer device M
Thus, the thermocompression bonding unit H is moved to the lowermost part of the cable body 3.

When the thermocompression bonding unit H moves along the cable body 3, charged static air is supplied to the front and rear static elimination nozzles 59, and the static electricity is blown from the static elimination nozzle 59 onto the outer peripheral surface of the cable main body 3. To remove electricity.

Next, at the time of entering the overcoating process, the thermocompression bonding unit H is switched to the cleaning / painting unit, the tank containing the overcoating paint is attached, the brush and the nozzle are replaced, and then the cleaning / painting unit is attached to the cable body. Then, the cleaning / painting unit is moved to the lower part of the cable body 3 in the same manner as in the primer step, and the top coat paint is applied to the outer peripheral surface of the cable body 3.

In this way, the painting work of the cable body 3 is performed,
When a plurality of cable bodies 3 are coated, a plurality of thermocompression bonding devices are prepared and the plurality of cable bodies 3 are parallelly arranged, so that the coating work can be performed more efficiently.

Further, the transfer device M can be omitted by providing the thermocompression bonding unit H with a motor for driving the guide roller 57 and making the thermocompression bonding unit H self-propelled.

As described above, in the thermocompression bonding apparatus of this embodiment, it is not necessary to construct or dismantle the scaffolding for thermocompression bonding, the cost can be significantly reduced, and the thermocompression bonding does not require manual labor. Since it is carried out automatically and continuously, it is possible to improve safety and work efficiency.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a side view of a cable-stayed bridge, FIG. 2 is a side view showing an installed state of a thermocompression bonding device, and FIG. Is a vertical cross-sectional view of the thermocompression bonding unit, FIG. 4 is a front view of the thermocompression bonding unit, and FIG. 5 is a process drawing of the painting work. 3 ... Cable body, 5 ... Covering part, M ... Transfer device,
H ... Thermocompression bonding unit, 24 ... Frame, 25 ... Heating mechanism, 26 ... Crimping mechanism, 27 ... Rotating mechanism, 29 ... Upper frame, 30 ... Lower frame, 43/48 ... Rotating roller, 57
…… Guide roller, B …… Bridge.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshihiko Mizukami, 8th Niijima, Harima-cho, Kako-gun, Hyogo Prefecture Kawasaki Heavy Industries, Ltd. Harima Plant (72) Eizo Imaoka 8th, Niijima, Harima-cho, Kako-gun, Hyogo Prefecture Kawasaki Shigeru Industrial Co., Ltd. Harima Factory

Claims (1)

(57) [Scope of utility model registration request] 1. A thermocompression bonding apparatus for thermocompression-bonding a coating film on an outer peripheral surface of an inclined or horizontal columnar structural member of a structure, which is dividable on both sides of the structural member. A frame disposed so as to surround a predetermined length portion of the frame, and provided on one end side portion of the frame in the length direction of the structural member, and the frame is supported by the structural member so as to be movable along the structural member. A plurality of guide rollers, a heating means provided on the other end side portion of the frame for heating the outer peripheral surface of the structural member, and a frame provided between the guide roller means and the heating means, and the outer periphery of the structural member. A pressing roller that is urged by a surface and rotatably supported so as to roll on the outer peripheral surface of the structural member; a rotation driving unit that rotationally drives the pressing roller; and a frame that guides the frame. Through and structure for coatings thermocompression bonding apparatus characterized by comprising a transfer means for moving along the structural member.