JPH0339442B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for producing plywood, decorative boards,
Alternatively, in a horizontal multistage press that heats and presses a plate to be processed such as a veneer veneer, the plate to be heated and pressed is placed on a conveyor, and the processed plate after being heated and pressed is supported by a support shaft. The present invention relates to a method and apparatus for doing so.

Usually, the multistage press that is mainly used in the plywood manufacturing process has a movable platen that can be raised and lowered by a ram cylinder installed in the lower frame, and is equipped with multiple stages of hot plates between the upper and lower frames.
After inserting and placing the plate to be processed between these hot plates, the movable platen is raised, and from the hot plate located at the top,
The hot plate on top of the press was successively pushed up, the press was closed, and the treated plate was heated and pressed for a required period of time.

However, in this type of multi-stage press having multiple upper and lower heating plates, in order to support each stage of the heating plates, support claws are attached to the four corners, and these support claws are attached to the supports in the form of a ladder step. A method is adopted in which the components are placed one after another on a support. Therefore, when determining the thickness of the hot plate at each stage, in addition to the strength required to heat and press the plate to be processed, which is the main purpose, we also take into consideration the strength required to handle the deflection and bending caused by the distance between the supporting points. In order to provide rigidity, it becomes thicker than necessary. Furthermore, arranging hot plates that are thicker and heavier than necessary in multiple stages means that the upper and lower parts of the plate to be processed placed on the hot plate are Not only does this increase the variation in the pressure applied to the treated plate, resulting in poor adhesion and thinning of the processed plate, but also the diameter of the ram cylinder, which is the means for raising and lowering the hot plates at each stage, and the pump that supplies fluid to the cylinder. This caused an increase in the capacity and load on the fluid pressure unit, forcing the multi-stage press to become larger.

For this reason, by adopting a horizontal multi-stage press with hot plates arranged side by side in the left-right direction, as opposed to a vertical multi-stage press with multiple hot plates arranged above and below, it is possible to correct the variation in pressurizing force. Attempts have been made to eliminate poor adhesion to treated plates after heating and pressurizing, to reduce the weight of hot plates, and to downsize fluid pressure units, but due to the following reasons, they have not yet been put into practical use. It has not yet been reached.

That is, in a vertical multistage press, the rear end of the plate to be processed is pushed by a pusher interposed between the hot plates, and the plate is placed approximately in the center of the hot plate, and the processed plate after being heated and pressed is The plate is pushed by a pusher from a substantially central position on the hot plate to a take-out position on the unloader side. Therefore, the treated board is always in a position suitable for heating and pressing, and during heating and pressing, the wood resin contained in the board or the adhesive applied to the board may be transferred to the heated board. Even if the treated plate comes into close contact with the hot plate due to leakage and adhesion, the close contact will be released by the pushing action of the pusher.

However, in a horizontal multistage press,
Since the lower end of the plate to be processed protrudes outside the hot plate, it cannot receive appropriate heating and pressure, and if the above-mentioned close contact state occurs,
It was not possible to remove the treated plate from the hot plate.

In view of the above, the present invention provides a horizontal multi-stage press in which a plurality of heat plates that can be opened and closed are arranged in parallel at equal intervals between left and right opposing frames, and that A pair of support shafts that can come out and go out freely lift the plate to be processed to the proper position for heating and pressing inside the hot plate, and after heating and pressing, the actuating piece fitted to the support shafts is rotated to complete the process. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for directly carrying out the method of the present invention, which displaces a plate up and down, will be described below based on the structure with reference to the accompanying drawings.

Through a pair of upper and lower cross beams 1 and 2 arranged at arbitrary intervals in the vertical direction and the front-back direction,
Frames 3 and 4 are provided oppositely on the left and right sides, and a ruler 6 is attached to one of the rails 5 laid on the upper cross beam 1. Between the first rails 5 are a plurality of heat plates 9 and a movable platen 10, each having a movable member 8 on either side of which is provided with an engaging portion 7 that engages with a ruler 6, protruding from both sides of the upper part. It is suspended.

A plurality of fluid cylinders 11 are installed on one of the frames 4, and the tips of their rams 12 are attached to the back of the movable platen 10, so that the hot plate 9 and the movable platen 10 are movable in the left and right directions.

Next, the hot plate 9 is provided with a supply port 13 in the upper part and a discharge port 14 in the lower part in order to supply and discharge a heating medium such as hot oil or steam to the passage formed inside the hot plate 9. An insertion guide 16 having a substantially triangular cross section is formed on the side surface of the plate body 15 located on the carry-in side.

In addition, the left, right, upper and lower parts of the hot plate 9 and the movable plate 10,
Or both upper and lower sides as shown in the figure, that is, the plate to be processed 1
5 near the four corners that will not impede the loading and unloading.
The brackets 17 are each attached, and a gate-shaped regulating tool 18 is bridged between these adjacent brackets 17, one end of which is attached to the bracket 17 and the other end is a free end, so that the regulating tool 18 is attached when the press is opened. The free ends of the brackets 17 are engaged with the brackets 17 to maintain equal left and right spacing between the hot plate 9 and the movable plate 10.

Next, a pair of notch grooves 19 are bored at an arbitrary interval in the lower part of the hot plate 9, and below the cutout grooves 19, there is provided a conveyor consisting of a plurality of rolls for carrying in, supporting, and carrying out the plate to be processed 15. conveyor 20, lower cross beam 2
It is arranged between the upper machine frames 21.

Furthermore, a pair of support shafts 22 are inserted into the pair of notch grooves 19 and have a length approximately equivalent to the length of the hot plates 9 in all stages when the press is opened, so that they can freely move in and out of the conveyor surface of the conveyor 20. , a screw movement, a rack and pinion movement, or a fluid movement as shown in the drawings. Specifically, the displacement fluid cylinder 24 is fixed in the opposite direction to the support frame 23 suspended between the lower cross beams 2, and the support shaft is attached to both ends of the connecting beam 26 suspended from the tip of the piston rod 25. 22, and this guide rod 27 is inserted into a guide ring 28 on the support frame 23 to regulate its balanced elevation. In addition, in the longitudinal direction of the support shaft 22, the actuating piece 29 is slightly narrower than the interval between the hot plates 9 when the press is opened, and has approximately the same thickness.
A plurality of heat plates are fitted at intervals of nine.

Further, a pair of intermediate shafts 30 are supported on the connecting beam 26 at arbitrary intervals, and a chain wheel 31 is fitted on each outer end, and a chain wheel 31 is fitted on each outer end of the pair of support shafts 22. between chain wheels 32 and a pair of chain wheels 3
Each chain 33 is suspended between the two. On the other hand, a rotating fluid cylinder 34 is attached to the lower end of the connecting beam 26,
The tip of the piston rod 35 is connected to the chain 33 via an appropriate attachment.

In addition, in FIG. 5, 36 is a processed plate.

Next, the action will be explained.

First, the fluid cylinder 11 is operated and the ram 12
When reduced, the movable platen 10 and the heating plates 9 of each stage are moved between the upper cross beams 1 by the moving member 8, while one side is kept in a parallel state by the engagement movement of the ruler 6 and the engagement part 7. , moves to the right in the figure along the rail 5. During this movement, the free ends of the regulating tools 18 at the four corners of the hot plate 9 located at the left end come into contact with the brackets 17 of the adjacent hot plates 9, and their maximum opening is sequentially restricted. The left and right spacing between the hot plates 9 in each stage is maintained evenly, and the press is in an open state.

Next, the plates 15 to be processed are carried in all at once from a loader located on the carry-in side between the hot plates 9 of each stage, which are maintained at a required temperature by being supplied with a heating medium. The loaded plate 15 to be processed is supported at its lower end by the drive of the conveyor 20, and is conveyed to the center position in the front-rear direction of the hot plates 9 of each stage, and stopped at that position.

At this time, by operating the displacement fluid cylinder 24, the piston rod 25 is contracted and the connecting beam 25 is
, the support shaft 22, which had been sunk below the conveyance surface of the conveyor 20, protrudes from the conveyance surface through the sliding movement of the guide rod 27 and the guide ring 28, and is supported on the conveyor 20 in a parallel state. The lower end of the plate 15 to be processed is lifted up and inserted into the lower end of the hot plate 9, preferably into the notched groove 19 as shown in FIG.

Therefore, the plate 15 to be processed reaches inside the hot plate 9 in the vertical direction as well, and under this condition, the fluid cylinder 11
When the ram 12 is extended by the operation, the press is closed, contrary to the above description, and the plate 15 to be processed is heated and pressurized.

After heating and pressurizing, when the piston rod 35 is extended by operating the rotating fluid cylinder 34, the support shaft 22 rotates clockwise in the figure via the chain 33, so the actuating piece 29 uses the support shaft 22 as a fulcrum. As a result, while lifting the processed plate 36, a circular locus is drawn within the interval of the hot plate 9. (See FIG. 5) Next, when the displacement fluid cylinder 24 is reversely operated and the support shaft 22 is recessed below the conveyance surface, the processed plate 36 that has been vertically displaced is transferred to the conveyor 20.
The vehicle will then be transferred to an unloader and transported to an unloader.

As described above, according to the present invention, in a horizontal multi-stage press in which a plurality of hot plates that can be opened and closed are arranged in parallel at equal intervals between left and right opposing frames, the hot plates are used when the press is opened. By protruding a pair of support shafts to which actuating pieces are fitted at intervals from the retracted position, the plates to be processed, which are placed in parallel on the conveyor, are inserted and supported between the hot plates and heated. After applying pressure, the actuating piece is rotated to vertically displace the processed plate between the hot plates, so that the plate to be processed is completely inserted into the hot plate in both the vertical direction and its Insufficient pressing force on the lower end is eliminated.

Furthermore, during heating and pressurization, if the wood resin present in the plate to be treated or the adhesive applied to the plate to be treated leaks and adheres to the hot plate, the treated plate may become attached to the hot plate. Even if they are in close contact, the processed plate is moved up and down by the rotation of the actuating piece, so the close contact is released and smooth unloading can be expected.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the horizontal multi-stage press, Fig. 2 is a side view of the same, Fig. 3 is a front view showing an embodiment of the apparatus of the present invention, and Figs. 4 and 5 are in operation. It is an explanatory diagram. 1... Upper cross beam, 3, 4... Frame, 5... Rail, 8... Moving member, 9... Hot plate, 10... Movable platen, 15... Treated plate, 18... Regulating tool, 19
... Notch groove, 20 ... Conveyor, 22 ... Support shaft, 29 ... Operating piece, 36 ... Treated plate.

Claims (1)

[Scope of Claims] 1. In a horizontal multi-stage press in which a plurality of heating plates that can be opened and closed are arranged in parallel at equal intervals between left and right frames, the spacing between the heating plates when the press is opened is By protruding a pair of support shafts to which actuating pieces are fitted from the retracted position, the plates to be processed placed in parallel on the conveyor are inserted and supported between the hot plates, and after being heated and pressurized. A method for supporting and displacing a plate in a horizontal multistage press, which comprises rotating an operating piece to vertically displace a processed plate between hot plates. 2 Frames are installed on the left and right through a pair of upper and lower cross beams arranged at arbitrary intervals, and multiple stages of heating plates and movable plates are moved in the left and right direction via moving members on the rails laid on the upper cross beams. In addition, near the four corners of the adjacent hot plates and movable platen, regulating devices are installed to maintain the spacing between the hot plates evenly when the press is opened, and below the hot plates are the plates to be treated. A conveyor for conveying the plates is provided, and furthermore, actuating pieces having approximately the same thickness as the spacing of the hot plates are installed at each spacing of the hot plates on a pair of support shafts having at least the length of the hot plates of all stages when the press is opened. A plate support and displacement device for a horizontal multi-stage press, characterized in that the pair of support shafts are fitted into each other so that the pair of support shafts can move in and out of the conveyance surface of the conveyor and can rotate freely.