JPH07100536B2 - Net attachment / detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention attaches and detaches a net body used for removing excess water and the like in raw materials in the manufacturing process of, for example, hard wood chip cement boards and insulation boards. It is related to the device.

[Prior Art] A hard wood chip cement board obtained by mixing wood chip flakes, cement, water and the like into a plate shape is widely used as a material for outer walls of buildings.

This hard wood chip cement plate is, for example, as disclosed in JP-A-56-140058, supplies a raw material composed of a mixture of wood flakes, cement, water and the like onto an endless belt, and heats and presses it. It is obtained by curing. If the excess water generated during this curing treatment is not removed, cavities or layer cracks will occur in the hard wood cement board.

As a method of removing the excess water, a net body such as a wire net is placed on the upper surface of the raw material and water is removed from the voids of the net body when pressed by a press machine.

The work of placing the net on the upper surface of the raw material requires relatively skill such as preventing the net from wrinkling and matching the corners, and is time-consuming. Also, the work of removing the net on the raw material after removing the surplus water must be performed quietly so as not to damage the product, which requires a relatively high degree of skill and is time-consuming.

Therefore, a device for automating these operations has been developed. For example, Japanese Patent Application Laid-Open No. 60-56725 discloses an automatic collecting device for nets
Japanese Patent Application Laid-Open No. 60-56727 discloses an automatic net feeding device.

[Problems to be Solved by the Invention] However, in the case of the automatic net body recovery device disclosed in Japanese Patent Laid-Open No. 60-56725, when the net body is removed from the cement plate, the net body is forcibly sharpened. Even in the case of the net body supply device disclosed in Japanese Patent Application Laid-Open No. 60-56727, the net body is bent at a considerable angle, although not as much as the automatic recovery device.

Such excessive bending of the net has the drawback of damaging the net and shortening its life. As a result, there is also a disadvantage that the running cost is high.

The present invention has been made in view of the above-mentioned problems of the conventional art, and an object thereof is to move the mesh body so that the mesh body is not burdened and to extend the life of the mesh body. It is about to provide a device.

[Means for Solving the Problems] The present invention has been made to achieve the above object,
The gist is to put a net for removing excess water in the raw material on the raw material of the plate when manufacturing the plate, and after removing the excess water, remove the net from the plate. In a net body attachment / detachment device, a movable base movable along a track installed above a plate conveyance path, a frame supported by the movable base so as to be able to move up and down, and a rotatably supported frame. A plurality of suspended arms and a pivotal support rotatably supported at the tip of the arm for gripping the grips provided at both ends of the mesh, and the pivot center of which is relative to the pivot center of the arm. And a chuck positioned in equilibrium with each other.

[Operation] When the grip of the net body is gripped by the chuck and the frame is lifted to hang the net body, the net body lifted by holding both ends is bent by its own weight and curved downward. The chuck and the arm rotate in accordance with the natural bending posture of the net body. Therefore, the net body can move without being forced to take an unnatural posture.

When placing the net on the plate raw material, after lifting the net in the above state at another place, move the movable table to the transport path and lower the frame to gently transport the net. Place on a plate material on the road. In the mounting process, the net body gradually changes from a curved posture to a flat posture, and the chuck and the arm rotate in response to the posture change of the net body. Therefore, during that time, the net does not have an unreasonable posture. When removing the net body after removing excess water and the like in the plate raw material, the net body is gently lifted and moved by the procedure reverse to the above procedure. Even at this time, the net does not have an unnatural posture.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings from FIG. 1 to FIG.

The net in this example is used for manufacturing a hard wood chip cement board. As shown in FIG. 9, the mesh body 100 is composed of a rectangular flexible metal mesh 101 with hangers 102 made of metal plates provided at both ends in the longitudinal direction. A grip portion 103 projects from each end of the hanger 102.

FIG. 1 is a plan layout view of a hard wood chip cement plate (plate) manufacturing plant in which the net body attachment / detachment device, which is the gist of the present invention, is arranged at two locations, and FIG. 2 is a side view thereof.

First, an outline of this hard wood chip cement board manufacturing plant will be described. The hard wood chip cement board manufacturing plant has a hot press machine 1 for press-molding a cement board raw material, and a cement board carrying path (board carrying path) 10 for carrying the cement board material to the hot press machine 1 and sending out the cement board after molding. And a net body conveying device 20 arranged in parallel with the cement plate conveying path 10 and having a conveying direction opposite to the conveying direction of the cement plate conveying path 10, and a mesh provided in the middle of the mesh body conveying device 20. The body cleaning device 30 and the cement plate conveying path 10 are located upstream of the hot pressing device 1 (on the right side in FIGS. 1 and 2) in the cement plate conveying path 10 and the net body conveying device 20.
The mesh body attaching / detaching device 50 laid over the above and the cement plate conveying path 10 on the downstream side of the hot press device 1 (first
It is located on the left side in the figures and FIG. 2, and is composed of a cement board conveying path 10 and a mesh attaching / detaching device 90 laid over the mesh conveying device 20.

The cement board conveying path 10 includes a first conveyor 11 and a second conveyor 12 on the upstream side of the hot pressing apparatus 1, and a third conveyor 13 and a fourth conveyor on the downstream side of the hot pressing apparatus 1.
Consists of conveyor 14 and.

The mesh transfer device 20 includes a first conveyor 21 and a second conveyor 21, which are arranged in order from the downstream side to the upstream side of the cement plate transfer path 10.
The conveyor 22 includes a third conveyor 23, and a fourth conveyor 24. The fourth conveyor 24 includes a pair of clamp devices 24a and 24b at the front and rear. The clamp devices 24a and 24b clamp and pull both hangers 102 of the mesh body 100,
The wrinkle extension 1 and the net attachment / detachment device 50 described later are performed.
This is for facilitating the lifting operation of the net 100 by means of.

The cleaning device 30 is arranged in the middle of the second conveyor 22, and is composed of a high-pressure pump unit 31 and a sprinkling unit 32. The sprinkling unit 32 is a closed chamber, and the second conveyor 22 penetrates the sprinkling unit 32. And the second conveyor
When the mesh body 100 conveyed by 22 passes through the water sprinkling unit 32, the high pressure water sent from the high pressure pump unit 31 is jetted from above the water sprinkling unit 32, and the mesh body 100
Is to be washed.

Next, the net body attaching / detaching device which is the gist of the present invention will be described in detail.

The mesh body attachment / detachment device 50 arranged on the upstream side of the cement plate transport path 10 is bridged between the first conveyor 11 of the cement plate transport path 10 and the fourth conveyor 24 of the mesh body transport apparatus 20.
FIG. 3 is a front view of the mesh body attaching / detaching device 50 as seen from the downstream side of the cement plate conveying path 10, and FIG. 4 is a side view of the main parts of the mesh body attaching / detaching device 50. The net attachment / detachment device 50 has a robust elevated structure 51 having a gate shape when viewed from the front, and the upper part of the elevated structure 51 is formed so as to intersect with the transport direction of the cement plate transport path 10. A pair of extending rails (tracks) 52 are provided. A movable table 53 is driven by a motor (not shown) to run on the rail 52.

An actuator 54 is installed on the movable table 53, and a frame 55 assembled in a rectangular shape in plan view is guided by the actuator 54 by a guide rod 60 and is hung so as to be able to move up and down. The longitudinal direction of the frame 55 is the cement board transport path.
It matches the transport direction of 10. A shaft 56 is provided at each end of the frame 55 in the longitudinal direction, and the shaft center thereof is movable.
It is supported in parallel with the moving direction of 53. Each shaft 56 is driven by an actuator 57 fixed to the frame 55 to rotate. Each shaft 56
Swing arms 58, 58 extending downward are fixed to both ends of each of the pair of swing arms 58, 58.
Connected by 9.

As shown in FIGS. 5 and 6, a chuck mount 61 is provided at each end of the connecting member 59 with a support rod 62 and a guide rod.
It is hung up and down via 63. On the support block portion 61a of the chuck mount 61, a support arm 64 having a U-shape in plan view is supported so as to be horizontally movable in the same direction as the movable base 53. That is, in the support block portion 61a,
Two support rods 65, 65, which are arranged in parallel vertically with the axis centered horizontally, penetrate horizontally so that both support rods 6
Both ends of 5,65 are fixed to both ends of the support arm 64 on the open side. Further, springs 66 are interposed between the support block portions 61a and the support arms 64 on both sides, and the springs 66 urge the support block portions 61a to be positioned at the center of the support arms 64. . With this mechanism, even if there is a slight manufacturing error in the separation dimension of the grip portions 103, 103 of the net 100, there is no problem in lifting the net 100.

An actuator 68 is fixed inside the support arm 64. The actuator 68 is for moving the pair of chuck support blocks 67, 67 located below to approach and separate from each other as shown by an arrow in FIG. The movement directions of the chuck support blocks 67, 67 are the same as the movement direction of the movable table 53. A chuck 69 having a rotary shaft 69a positioned parallel to the moving direction of the movable table 53 is rotatably supported by each of the chuck support blocks 67. That is, the center of rotation of the chuck 69 is in a positional relationship parallel to the center of rotation of the swing arm 58. The claws 69b of the pair of chucks 69, 69 supported by the actuator 68 are located so as to face each other. By bringing the pair of chuck support blocks 67, 67 close to each other, as shown in FIG. 7, the grip 103 of the net 100 can be held by the claws 69b of the chucks 69.

Further, a hanger upper presser 70 is supported on the outer side of the support arm 64 so as to be able to move up and down, and is urged downward by a spring 71. The hanger upper presser 70 cooperates with a hanger lower presser (not shown) provided on the fourth conveyor 24 of the mesh transfer device 20 to hold the hanger 102 of the mesh 100.

In addition, the fourth conveyor 24 of the net transfer device 20 is the elevated structure.
A truck 80 for loading the nets 100 at the start of the operation is provided on the opposite side of the cement board conveying path 10 with the fourth conveyor 24 in between, which is located substantially in the center of the lower portion of 51.

On the other hand, the net body attachment / detachment device 90 arranged on the downstream side of the cement board transport path 10 has both a structural and functional structure except that the length of the elevated structure is short because there is no space to accommodate the carriage 80. Basically, there is no difference from the net body attaching / detaching device 50 on the upstream side. Therefore, the description thereof is omitted, and in the following description, the reference numerals of the constituent parts of the net body attaching / detaching device 90 are the same as those of the net body attaching / detaching device 50.

Next, the operation of the above two net attachment / detachment devices 50, 90 will be described with reference to the operation of the entire hard wood chip cement plate manufacturing plant.

First, a cart 80 carrying a predetermined number of nets 100 is set at a predetermined position below the net attachment / detachment device 50, and a movable table 53 is provided above it.
To move. At this time, the longitudinal direction of the net 100 is made parallel to the carrying direction of the cement board carrying path 10.

Next, the swing arms 58 are directed right below, and the chucks 69 are held in a horizontal posture to lower the frame 55.
When each chuck 69 reaches the height at which the grip portion 103 of the net body 100 can be held, the frame 55 stops. Then, each chuck 68 is closed by each actuator 68, and the four grip portions 103 of the net body 100 are held.

After holding each grip 103 with each chuck 69,
Rises and lifts the net 100. At that time, the wire net of the net 100
101 bends and bends due to its own weight. On the other hand, at the same time when the frame 55 starts to move up, each swing arm 58 is driven by each actuator 57 as shown by the imaginary line in FIG. The chuck 69 freely rotates with respect to the chuck support block 67 as shown in FIG. The rotation speed of the swing arm 58 is set so as to reasonably correspond to the natural bending posture of the mesh body 100 due to the weight of the wire mesh 101, and as a result, the mesh body 100 is gentle in a very comfortable posture. It will be lifted in a curved state. In particular, since each chuck 69 also rotates, the net body 100 does not bend at the connecting portion between the wire net 101 and the hanger 102.

Next, the movable table 53 moves in parallel to the cement board conveying path 10 in a state where the net 100 is lifted. And frame 53
Is gradually lowered, and the net 100 is gently lowered onto the cement plate raw material A on the template placed at a predetermined position on the first conveyor 11. At this time, the net body 100 changes to a shape opposite to that when it is just lifted up, that is, gradually changes from a curved posture to a horizontal and flat posture. On the other hand, at the same time when the central portion of the wire mesh 101 contacts the cement plate raw material A, the swing arms 58 are driven by the actuators 57 to rotate so that the tips gradually face outward, and the chucks 69 move to the chuck support blocks. 67
Rotate against. As a result, the posture of the mesh body 100 can be changed very reasonably, and the mesh body 100 is not unduly burdened.

Then, when the net 100 is placed on the cement plate raw material A and is in a flat state, the swing arm 58 faces the vertical direction and each chuck 69 is in a horizontal posture. At the same time, the swing arm 58 stops rotating. After that, each chuck 69 is opened by each actuator 69, and the mesh body 100 is released from the upstream mesh body attaching / detaching device 50. The above-mentioned work of placing the net 100 on the cement plate raw material A is performed while the first conveyor 11 is stopped.

Then, after the net body 100 is detached from each chuck 69, the frame 55 rises and the movable table 53 again moves in parallel on the cart 80. Then, the net body 10 is sequentially processed in the same procedure as described above.
0 is placed on the cement plate raw material A on the first conveyor 11. After the predetermined number of nets 100 are carried from the carriage 80 to the cement plate transport path 10, the upstream net body attachment / detachment device 50 stops on the net body transport device 20.

On the other hand, when the net 100 is placed on the cement board raw material A, the first conveyor 11 of the cement board conveying path 10 starts operation, and the cement board raw material A is hot-pressed through the second conveyor 12. Sent to 1. By this hot press device 1, the cement plate raw material A is heated and pressed to be hardened. At that time, excess water contained in the cement plate raw material A is removed.

The processed cement board A'is sent to the fourth conveyor 14 via the third conveyor 13, and the fourth conveyor 14 stops when the cement board A'is positioned directly below the net body attaching / detaching device 90 on the downstream side. At this time, the movable table 53 of the net body attaching / detaching device 90 is located on the cement plate transport path 10, and the mesh body attaching / detaching device on the upstream side is provided.
The net body 100 placed on the cement board A ′ is lifted by the same operation as 50. Then, the movable table 53 of the net body attaching / detaching device 90 moves in parallel on the net body conveying device 20 and stops,
The net 100 is unloaded onto the stopped first conveyor 21. Even during the lifting and lowering, the posture of the net 100 is changed extremely smoothly, and the net 100 is not unduly burdened.

When the net 100 is placed, the first conveyor 21 starts operating and sends the net 100 to the second conveyor 22. While being transferred by the second conveyor 22, the mesh 100 passes through the sprinkling unit 32 of the cleaning device 30. In the sprinkling unit 32, high-pressure water is sprayed onto the mesh 100 to wash away the cement slag adhering to the mesh 100.

The washed net 100 is from the second conveyor 22 to the third conveyor 2
4 is conveyed to the 4th conveyor 24 via 3 and the 4th conveyor is located when the mesh 100 is located immediately below the mesh attachment / detachment device 50 on the upstream side.
24 stops. Here, both hangers 102 of the net body 100 are clamped by the clamp devices 24a and 24b and pulled in the longitudinal direction.

Next, the frame 53 of the net attachment / detachment device 50 with the swing arm 58 directed vertically downward is lowered. Then, each hanger upper presser 70 comes into contact with the hanger 102 of the net 100, and in cooperation with the hanger lower presser (not shown), the elastic force of the spring 71 presses the vicinity of the handle 103 of the hanger 102 in a horizontal posture. . Even if the height position of the hanger 102 varies due to different return states of the individual nets 100, etc., since the chuck mount 61 is supported so as to be able to move up and down with respect to the connecting member 59, the above variations are absorbed. As a result, the hanger 102 is always pressed by the constant elastic force of the spring 71.

After that, each chuck 69 is closed in the same manner as the above operation,
After the grip 103 of the hanger 102 is clamped by the chuck 69, the net 100 is lifted in a curved posture and placed on the cement plate raw material A on the first conveyor 11 of the cement plate conveying path 10. It Of course, also in this case, the change in the posture of the net 100 is extremely reasonably performed.

After that, the net 100 is supplied to the cement plate raw material A, the net 100 is removed from the processed cement plate A ′, and the net 100 is removed.
And the re-supply of the mesh 100 to the cement plate raw material A form a series of flows of the mesh 100 forming a closed loop. Therefore, there is no wasteful work and the productivity is very high.

As described above, when the net body 100 is lifted by the net body attaching / detaching devices 50 and 90, the net body 100 is kept in a natural and gentle curved posture due to the weight of the wire net 101, and can be moved while maintaining that posture. Since it is like this, the net 100
The burden on the net 100 is not increased, and the life of the net 100 is significantly extended as compared with the conventional case.

The net body attaching / detaching device according to the present invention can be used not only for the production of the cement board but also for the production of insulation boards, etc. [Advantages of the Invention] According to the present invention, the net body can be lifted in a natural and gentle curved posture due to its own weight, and can be moved while maintaining that posture, which is an advantage that the life of the net body can be extended. The effect is played.

[Brief description of drawings]

The drawings from FIG. 1 to FIG. 9 show one embodiment of the present invention, and FIG. 1 is a plan layout view of a hard wood chip cement board manufacturing plant using the net body attaching / detaching device of the present invention. FIG. 3 is a side view of the same, FIG. 3 is a front view of a net body attaching / detaching device that is the gist of the present invention, FIG. 4 is a side view of the same, and FIG. 6 is an enlarged side view of the same, FIG. 7 is a front view of the chuck in a clamped state, FIG. 8 is a side view of the chuck portion showing a state in which the chuck is rotated when the net is lifted, and FIG. 9 is a net. FIG. 10 …… Cement board transport path (plate transport path), 50, 90 …… Net body attachment / detachment device, 52 …… Rail (track), 53 …… Movable platform, 55 …… Frame, 58 …… Swing arm, 69 ... Chuck, 100 ... Net, 103 ... Handle, A ... Cement plate raw material (plate raw material), A '... Cement plate (plate).

Claims (1)

[Claims] 1. When manufacturing a plate, a net for removing excess water and the like in the raw material is placed on the plate raw material, and after removing the excess water and the like, the net is removed from the plate. In the net body attaching / detaching device to be removed, a movable base movable along an orbit installed above the conveyance path of the plate body, a frame supported by the movable base so as to be able to move up and down, and a rotatably supported frame. And a plurality of suspended arms and a gripping portion provided at both ends of the mesh body is rotatably supported at the tip of the arm, and its rotation center is the rotation center of the arm. A net body attaching / detaching device, comprising: a chuck positioned in parallel with the chuck.