JPH0367799B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a multi-stage press device that is equipped with a plurality of press plates and is capable of forming a plurality of laminates such as plywood and printed circuit boards in one press. .

[Prior art and its problems] Conventionally, a plurality of laminates such as plywood or printed circuit boards can be formed by one press, and press plates are provided in multiple stages between a pair of upper and lower press frames. A so-called multi-stage press device is constructed so that conveyance plates each carrying a predetermined workpiece are placed on these press plates, and the workpieces are simultaneously pressed by the pressing action of the press frame. There is.

In such multi-stage press equipment, when inserting the conveyor plate carrying the workpiece to a predetermined position on the press plate, it is common to slide it on the press plate. There was a problem in that the surface of the press plate was worn away due to sliding, and the press precision with respect to the workpiece was deteriorated. In particular, in the case of a hot press using a hot plate, the conveyor plate is made thin in consideration of heat transfer to the compound, so if the weight of the workpiece is large, the conveyor plate may be distorted. The hot plate will be inserted onto the hot plate, and the hot plate will be locally abraded to a large extent.

In order to solve such problems,
As disclosed in Japanese Patent No. 46890, a roller stand independent from the press plate is disposed on the side of the press plate, and the conveying plate is supported by the roller stands on both sides and floats above the press plate. At the same time, when the conveyor plate is lowered or the press plate is raised, the conveyor plate is placed on the press plate. When the conveyor plate on which the workpiece is placed is inserted onto the press plate, There is also one that completely eliminates the sliding movement between the conveyor plate and the press plate.

However, if the transport plate is configured to be moved while being supported on a roller stand as described above, the stopping position will not be constant when the transport plate is inserted, and the transport plate will move even due to slight inclination or vibration. In addition, particularly in the case of a hot press using a hot plate, there is a problem in that the arrangement of the roller stand makes piping to the hot plate difficult.

[Object of the Invention] In view of the above-mentioned circumstances, the present invention is capable of stably inserting a conveyor plate on which a workpiece is placed at a fixed position while preventing wear of the hot plate. The purpose of the present invention is to provide a multi-stage press device with a simple configuration that allows easy piping, etc.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a plurality of conveyance receiving fittings extending in the press plate arrangement direction and corresponding to the plurality of press plates, respectively, on both the left and right sides of the press plate. The two support means are separated by a predetermined distance in the front and back and arranged to be vertically movable and rotatable,
The conveyance receiving bracket moves vertically across the top surface of the press plate when the workpiece is carried in by the vertical movement of the support means, and also moves between the press plate and the top surface of the press plate by the rotation of the support means. A position where the loaded conveyor plate moves in and out of the movement area during the press operation and supports the conveyor plate in a floating state above the press plate, and a position outside the movement area of the press plate and the conveyor plate during the press operation. It is constructed so that it can be located at the retracted position and at the retracted position.

[Embodiment of the Invention] An embodiment of the present invention will be described below based on the drawings.

The multistage press apparatus shown in FIGS. 1 to 3 is a hot press apparatus 1 using a hot plate as a press plate, and is for hot pressing a laminated board such as a printed circuit board.

The hot press machine 1 has four guide columns 4 on the lower frame 3 corresponding to the four corners of the fixed press plate 2.
(not shown in FIG. 1) stands vertically, and a movable press plate 5 is disposed so as to be movable in the vertical direction along the guide column 4.

The movable press platen 5 is moved up and down by a plunger shaft 6 installed on the lower frame 3 using hydraulic pressure from a hydraulic drive source (not shown), and is moved up and down by a plurality of stages installed between the fixed press platen 2 and the movable press platen 5. By expanding and contracting the distance between the hot plates 7 in the vertical direction, a workpiece 13 such as a printed circuit board placed on the hot plates 7 can be subjected to a thermal compression process.

On both sides of the hot plate 7, there are locking portions 7 that protrude more toward the side as the hot plate is located on the upper side.
1, and by placing the locking portion 71 on the stepped portion 41a of the step-shaped locking member 41 fixed to the guide column 4 and expanding upward, the hot plates 7 are spaced apart from each other by a predetermined distance. When the movable press plate 5 is raised, the hot plates 7 located at the bottom are successively lifted from the stepped portion 41a, and the vertical interval between the plurality of hot plates 7 is reduced.

Further, flexible hoses 9 for supplying a heat source such as steam to the hot plate 7 are connected to each rear end surface of the hot plate 7.

Further, two shafts 10 (total four shafts) are mounted on both left and right sides of the hot plate 7, and are supported by bearings 81 fixed to a vertical frame 8 installed parallel to the guide column 4, and are rotated in the vertical direction. These shafts 10 are installed so as to be movable in the axial direction, and these shafts 10 are connected to an elevating cylinder 11 provided at the upper end.
It moves up and down in the axial direction.

Conveyance fittings 12 are fixed to the peripheral wall of the shaft 10 at positions corresponding to the spacing between the hot plates 7 when they are locked to the stepped portions 41a. Here, when the shaft 10 is moved up and down in the axial direction, the receiving surface for the conveying plate 14 of the conveying receiving fitting 12 is slightly raised above the upper surface of the hot plate 7 while the hot plate 7 is locked to the stepped portion 41a. It is designed so that

As shown in FIG.
The outer surface of one side 12a of the L-shape is fixed to the peripheral wall of the shaft 10, and the other side (receiving surface) 12b extends substantially horizontally. Further, in order to ensure that the conveyance plate 14 on which the workpiece 13 is placed is inserted while being well supported by the conveyance receiving metal fitting 12, the front edge of the conveyance receiving metal fitting 12 in the direction of insertion of the workpiece 13 is set to L. The shape is bent outward.

Gears 15 are fitted and fixed to the upper part of each shaft 10, and these gears 15 are interconnected by a chain 16, and by feeding and driving the chain 16, each shaft 10 is simultaneously rotated around the shaft. It is configured to rotate by the same angle.

A retractable cylinder 17 whose main body is immovably fixed is interposed in the middle of the chain 16, and rods 17a and 17b extending from both end surfaces of the piston of the cylinder 17 are connected to the ends of the chain 16, respectively. By connecting them, the chain 16 is fed in conjunction with the movement of the piston of the retraction cylinder 17, and the shaft 10 is rotated in accordance with the amount of movement of the piston.

Here, when the operating source of the retracting cylinder 17 is supplied to cause the rod 17a to protrude, the chain 16 is sent clockwise in FIG. 2, rotating the shaft 10 by 90 degrees clockwise, and Receiving metal fitting 12
are facing inward from a state along the side surface of the hot plate 7, and facing each other.
The space between the two is configured to be narrower than the width of the transport plate 14 and wider than the width of the hot plate 7.

That is, the chain 1 is moved by the retracting cylinder 17.
6, the conveyance receiving fitting 12 can be rotated to a position where it can support the conveying plate 14, and the conveying receiving fitting 12 can be evacuated from the movement space during press operation of the conveying plate 14. It is something that can be done.

In this embodiment, the support means for the transport receiving fitting 12 are the vertical frame 8, the bearing 81, and the shaft 1.
0. It is composed of an elevating cylinder 11, a retracting cylinder 17, etc.

In the hot press apparatus 1 configured as described above,
When placing the workpiece 13 placed on the transfer plate 14 onto the hot plate 7, first, the movable press plate 5 is lowered by the plunger shaft 6 installed on the lower fixed press frame 3. , each hot plate 7 is locked to the stepped portion 41a of the locking member 41 and arranged at a predetermined distance from each other. Furthermore, the shaft 10 is raised in the axial direction by the lifting cylinder 11, and the chain 16 is driven by the retracting cylinder 17 to rotate the shaft 10, so that the receiving metal fitting 12 for transportation is turned inward, and the transportation is carried out. The carrier plate 14 can be supported by the support fitting 12. In such a state, the workpiece 13
The conveyance plate 14 on which the conveyance plate 14 is placed is slid and inserted onto the receiving surface 12b of the conveyance receiving fitting 12.

At this time, the receiving surface 12b of the receiving metal fitting 12 for transportation
is located above the top surface of the hot plate 7, so the hot plate 7 and the conveying plate 14 do not come into sliding contact when the conveying plate 14 is inserted, and the conveying plate 14 is in a floating state with respect to the hot plate 7. Since the hot plate 7 moves, it is possible to prevent the hot plate 7 from being worn out.

In addition, since the conveyance plate 14 is inserted in sliding contact with the conveyance receiving fitting 12, the positioning during insertion may become unstable, and positional deviation may occur due to vibration or slight tilt after insertion. is also suppressed.

Furthermore, the transport receiving fitting 12 is not configured to surround the hot plate 7, and the piping of the flexible hoses 9, which are scattered around the hot plate 7, will not be obstructed by the transport receiving fitting 12. .

After the carrier plate 14 is supported on the carrier bracket 12 in this manner, the shaft 10 is lowered in the axial direction together with the carrier receiver 12 by the lifting cylinder 11, and the carrier plate 14 is placed on the hot plate 7. Then, the transport plate 14 is released from the transport receiving metal fitting 12.

However, in this state, the conveyance receiving metal fitting 12 is arranged in the movement space of the conveyance plate 14 during the pressing operation and will prevent the pressing operation, so the conveyance receiving metal fitting 12 is removed from the movement space of the conveyance plate 14. To avoid this, operate the retraction cylinder 17 to
b protrudes, send the chain 16 counterclockwise in FIG. 2, and rotate the shaft 10 counterclockwise so that the conveyance receiving metal fittings 12 are along both sides of the hot plate 7 (so that they are parallel to each other). do.

Here, the movable press plate 5 is raised by the plunger shaft 6, and the transport plate 14 and the workpiece 1 are
The vertical distance between the hot plates 7 on which the workpieces 3 are placed is shortened, and the workpieces 13 are subjected to a heat pressing process.

When the heat pressing process of the workpiece 13 is completed, each part is operated in the opposite manner to the press operation, and the lower surfaces of both sides of the conveyor plate 14 on which the workpiece 13 is placed are moved in the same manner as when the workpiece 13 is inserted. is supported by the transport receiving metal fitting 12, and then the transport receiving metal fitting 1
The processed workpiece 1 is removed by sliding the conveyor plate 14 onto the processed workpiece 1.
3.

[Effects of the Invention] As explained above, according to the present invention, when carrying in or out the workpiece, the carrying plate is supported on both sides by the carrying bracket and moved in a floating state above the press plate. At the same time, when the press is in operation, by rotating the support means, the conveyance receiving bracket can be retracted out of the movement range of the press plate and the conveyance plate to avoid interference with the press plate and the conveyance plate. This prevents the hot plate from being worn out due to the plate sliding on the hot plate, making it possible to maintain accuracy and improve durability.

Further, piping to the press plate can be easily performed.

[Brief explanation of drawings]

Fig. 1 is a front view of a hot press machine showing an embodiment of the present invention, and Fig. 2 is a plan view (cross section -
FIG. 3 is a partially enlarged view showing the support portion of the hot plate in the above embodiment, and FIG. 4 is a perspective view of the conveyance receiving metal fitting in the above embodiment. 1...Hot pressure press equipment, 2...Fixed press plate,
3...Lower frame, 5...Movable press plate, 7...
...Hot plate, 10...Shaft, 11...
Lifting cylinder, 12...Transportation receiving bracket, 13...
...Workpiece, 14...Transportation plate, 17...Evacuation cylinder.

Claims (1)

[Scope of Claims] 1. A press plate is provided with a plurality of stages, and a conveyor plate on which a predetermined workpiece is placed is placed on each press plate, and the workpieces are simultaneously pressed by a pair of upper and lower press frames. In the multi-stage press device configured to do so, two support means are provided on each of the left and right sides of the press plate, and are provided with conveyance receiving fittings extending in the direction of arrangement of the press plates and respectively corresponding to the plurality of press plates. are arranged so as to be vertically movable and rotatable with a predetermined space between them in the front and rear, and the conveyance receiving metal fittings are arranged vertically and rotatably so as to be vertically movable and rotatable, and the conveyance receiving metal fittings are arranged vertically and rotatably to sandwich the upper surface position of the press plate when the workpiece is carried in by the vertical movement of the support means. At the same time, the rotation of the support means causes the press plate and the conveying plate placed on the press plate to move in and out of the movement range during the pressing operation, and the conveying plate A multi-stage press apparatus, characterized in that it can be located at a position where it is movably supported in a floating state above and a retracted position outside the movement range of the press plate and the conveyance plate during press operation.