JPS61102201A - Uniform pressing method and device for horizontal type multistage press - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention provides a method for manufacturing plywood, decorative boards, veneer veneers, etc. by disposing a plurality of heating plates that can be opened and closed freely between left and right opposing frames. The present invention relates to a method and apparatus for a horizontal multi-stage press that heats and presses a plate to be processed, in which a movable platen is made tiltable to follow the inherent thickness of the plate to be processed, thereby equalizing the pressing force.

``Prior art'' The multi-stage press, which is usually used mainly 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 the plate to be processed is inserted and placed between these hot plates, the movable platen is raised, and the hot plate located above is successively pushed up, starting from the lowest hot plate, and the press is closed, heating for the required time. A treated plate was obtained by applying pressure.

However, in this type of multi-stage press having multiple upper and lower heating plates, when supporting each stage of heating plates,
A system is adopted in which support claws are attached to the four corners, and these support claws are sequentially placed on ladder-like supports attached to pillars. Therefore, when determining the thickness of the heating 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 cope with the bending and bleeding caused by the distance between the supporting points, and in order to provide rigidity, we have increased the thickness more than necessary. become.

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 This increases the variation in the pressure applied to the treated plate, resulting in poor adhesion, reduced thickness, etc. in the treated plate. In addition, movable members are fixedly supported at the four corners of the hot plate and movable platen in each stage in order to maintain their equilibrium elevation. As a result, the hot plate and movable platen at each stage cannot be tilted, and the treated plate will suffer from poor adhesion, reduced thickness, etc., as described above.

[Problems to be Solved by the Invention] In view of the above, the present invention is directed to a vertical multi-stage press in which a plurality of hot plates are arranged above and below, in which the hot plates are hung in the horizontal direction, or A horizontal multi-stage press with elastically supported points is used, and the fluid pressure is transmitted to the movable platen in a line machining state to achieve uniform pressurization depending on the thickness of the plate to be processed.

``Example'' Below, an example of an apparatus for directly implementing the method of the present invention will be described in terms of its configuration based on the accompanying drawings.

In Figures 1 and 2, the vertical direction and front and back
A frame 3 is installed on the left and right through a pair of upper and lower cross beams 1 and 2 arranged at arbitrary intervals in the directions, and the upper cross beam 1 is provided with a frame 3 having a phase difference in the vertical direction and in the front-rear direction. Two staggered rails 4.5 are arranged, and a ruler 6 is attached to one of the rails 4 and 5 laid on the upper cross beam 1.

Between the rails 4 and 5, a movable member 8 having an engaging portion 7 that engages with a ruler 6 on either side is connected to a plurality of stages of hot plates 9.
The hot plate 9 and the movable plate 10 are attached to protrude from both sides of the upper part of the movable platen 10, and are mounted alternately on the two rails 4.5 so that the adjacent movable members 8 do not interfere with each other.
is hanging.

Therefore, in this case, if the moving member 8 is set to the thickness υ of the hot plate 9,
Even if it is large, adjacent devices will tend to interfere with each other.

However, from Hiko, as shown in Figure 3, if the number of rails 4 laid on the upper cross beam 1 is set to one, the moving members 8 will be It is preferable to set it smaller.

A plurality of fluid cylinders 11 are provided in the one frame 3.
The tip of the ram 12 and the back of the movable platen 10 can freely come into contact with each other via a spherical bushing 13, which will be described in detail below.

That is, as the details are shown in FIG. 5, an inner ring 15 made of a divided sphere is positioned within the space between the receiver 14 attached to the tip of the ram 12, and the shaft portion 16 of the inner ring 15 is attached to the receiver. 14, and an outer ring 17 is slidably fitted into the spherical portion of the inner ring 15. On the other hand, on the back of the movable platen 10,
A pair of supports 19 each having an arbitrary range of clearance 18 are mounted facing each other, the shaft part 16 is inserted and supported within the clearance 18, and the outer ring 17 is slid in the opposing position. Board 2
0 is set.

As shown in FIGS. 1 and 2, when the operating stroke of the ram 12 is long, the lifting support running through the movable member 8 is used to prevent the ram 12 from tilting forward due to flexure during extension. The body 21 is installed on the receiver 14, and conversely, as shown in FIG. 4, this is not necessary when the operating stroke of the ram 12 is short.

Next, the hot plate 9 has a passage formed therein.
There is a supply port 2 at the top to supply and discharge heating media such as hot oil and steam.
2. Discharge ports 23 are installed at the lower part, and an insertion guide 25 having a substantially triangular cross section is formed on the side surface of the plate 24 to be processed on the loading side.

In addition, brackets 26 are attached to the left and right upper and lower parts of the hot plate 9 and the movable platen 10, or both upper and lower sides as shown in the figure, that is, near the four corners that do not interfere with the loading and unloading of the plate 24 to be processed. Gate-shaped regulating devices 27 are bridged between adjacent brackets 26, one end of which is attached to the bracket 26, and the other end is a free end, so that the free end of the regulating device 27 is engaged with the bracket 26 when the press is released. The horizontal spacing between the hot plate 9 and the movable plate 10 is maintained evenly.

Next, a pair of notch grooves 28 are bored at an arbitrary interval in the lower part of the hot plate 9, and below the grooves 28 are formed a plurality of rolls for conveying and placing the plates 24 to be processed in parallel and carrying them out. A conveyor 29 consisting of the following is disposed between the machine frames 30 on the lower cross beam 2.

Further, a pair of push-up bodies 3 which intervene in the pair of notched grooves 28 and whose length is approximately equivalent to the length of the hot plates 9 of all stages when the press is opened are made to be able to freely move in and out of the conveyance surface of the conveyor 29. In order to achieve this, a one-way crank lever is used to raise and lower the vehicle using screw motion, rack and pinion motion, and fluid motion.

Further, in the above embodiment based on FIGS. 1 to 3, the hot plate 9 and the movable platen 10 are suspended from the rails 4.5 of the upper cross beam 1, but they are also suspended from the lower cross beam 2. A rail 4' is laid, and at least one of the upper and lower parts of the upper and lower rails 4, 4' is supported so as to be slidable along a guide surface 32 formed on the upper cross beam 1 or the lower cross beam 2. However, another embodiment will be described in which four points of the hot plate 9 and the movable platen 10 are elastically supported by elastically mounting the moving member 8.

Note that parts that have already been described are given the same numbers and will not be described repeatedly.

First, in the one shown in FIG. 4, in order to shorten the opening and closing time of the press, a fluid cylinder 11' is also provided on the other frame 3', and the tip of the ram 12' and the back of the movable platen 10' are connected to the As described above, the lower rail 4' can be brought into contact with the guide surface 32 of the lower cross beam 2 through the spherical bush 13'.
The upper surface of the lower cross beam 2 and the lower rail 4
A spring member 33 is fixed to the lower surface of the rail 4', and normally pushes up the lower rail 4' with a constant pressure.

On the other hand, FIG. 6 shows an example in which the upper rail 4 is urged downward by a constant pressure.
The upper rail 4 is slidable along the guide surface 32 of the upper cross beam 1, while a small fluid cylinder 34 is installed on the lower surface of the upper cross beam 1.
are pivotally supported at appropriate intervals, and the tip of the piston rod 35 is attached to the upper surface of the upper rail 4.

"Operation" This embodiment has a different structure than the above, and the operation will be explained next.

First, operate the fluid cylinders 11 and u' to release the ram 1.
When 2° 12' is reduced, the shaft part 16 comes into contact with the vertical part of the support 19 and pulls the movable plates 10 and 10' together, so that the movable plates 10 and 10' and the hot plate 9 are moved by the moving member 8. It is suspended between the upper cross beams 1 and moves along the rails 4 and 5 while being kept parallel on one side by the engagement portion of the ruler 6 and the engagement portion 7.

At this time, as shown in FIGS. 4 and 6, if the four points are elastically supported, that is, as shown in FIG. 4, the lower rail 4' is pushed up from above the lower cross beam 2. If there is
In effect, the hot plate 9 and the movable plate 10°10' are suspended from the upper cross beam 1, and conversely, as shown in FIG.
If the upper rail 4 is pushed down from the upper cross beam 1,
Substantially, the hot plate 9 and the movable plates 10 and 10' are suspended on the lower cross beam 2. However, in any case,
At the four points of the hot plate 9, movable plate 10, 10', the rail 4
, 4', the movable member 8 is elastically restrained and rolls smoothly. During this movement, the moving member 8 moves from the hot plate 9 located at the left end to the hot plate located at the center in the case shown in FIG. 9, the free ends of the regulating devices 27 at their four corners come into contact with the brackets 26 of the adjacent hot plates 9, and the maximum opening of the brackets 26 is sequentially regulated, thereby making the left and right spacing of the hot plates 9 of each stage equal. The press is held in the open state.

Next, the plates 24 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 carried-in processing target plate 24 is supported at its lower end by the drive of the conveyor 29, and is conveyed to the center position in the front-rear direction of the hot plate 9 of each stage.
be stopped at that position.

At this time, the dosing body 31 that had been recessed under the conveyance surface of the conveyor 29 is made to protrude, and the lower ends of the plates 24 to be processed that are placed in parallel on the conveyor 29 are lifted up. When inserted between the notch grooves 28 of the hot plate 9, the plate 24 to be processed reaches inside the hot plate 9 also in the vertical direction.

Next, when the rams 12 and 1.2' are extended by the operation of the fluid cylinders 11 and 11', the outer ring 17 and the sliding plate 20 come into contact with each other, and contrary to the above description, the movable platen 1o and the IC
+', the hot plate 9 is pushed and the press is closed.

When the press is closed, each plate body 24 to be processed inserted between the hot plates 9 of each stage does not necessarily contact the entire surface of the hot plates 9 of each stage, but only partially contacts the hot plates 9 of each stage. There is. At this time,
If the required pressure is supplied by the fluid cylinders 1.1 and 1f, the hot plates 9 and movable plates 10° and 10' at each stage will tilt in a direction corresponding to the thickness and thinness of each plate to be processed 24. Become.

That is, the pressure force is transmitted through the spherical bushes 13 and 1.3'.
This is carried out by line contact pressure between the outer ring 17 and the sliding plate 20 of each stage, and in particular, the heating plate 9 and the movable platen 10 of each stage.
, 10' in the vertical direction is caused by the outer ring 17 sliding in the circumferential direction of the inner ring 15 in FIGS. Outer ring 17
By sliding in the direction of the spherical surface of the inner ring 15, both can be pressurized.

After heating and pressurizing, the fluid cylinders 11 and t1' are operated again to contract the rams 12 and 12' to open the press, and the push-up body 31 is moved to the conveyor 29.
The processed plates are placed in parallel on the conveyor 29 and transported to the unloader.

``Effects'' As described above, according to the present invention, the frames are mounted on the left and right sides via a pair of upper and lower cross beams arranged at arbitrary intervals,
A plurality of heat plates and movable plates are suspended from the upper cross beam or the rails laid on the upper and lower cross beams via moving members, or elastically supported at their four points so that they can be opened and closed in the left and right directions. In the vicinity of the four corners of the adjacent hot plates and movable platen, regulating devices are arranged to maintain an even spacing between the hot plates when the press is opened, and a spherical bushing is arranged at the tip of the ram of the fluid cylinder arranged in the frame. This spherical bushing is inserted into and supported by the support attached to the back of the movable platen, so that when heating and pressurizing the movable platen, the movable platen can exert a pressing force that corresponds to tilting conditions in the vertical direction as well as in the longitudinal direction. In addition, the hot plate and movable platen are not fixedly supported as in the conventional apparatus described above, and uniform pressure can be expected depending on the thickness of the plate to be processed.

[Brief explanation of drawings]

Fig. 1 is a plan view showing one embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a perspective view of main parts, Fig. 4 is a side view showing another embodiment of the invention, Fig. 5 The figure is an enlarged sectional view taken along the line A--A in FIG. 4, and FIG. 6 is a front view showing another embodiment of the present invention. 1... Upper cross beam, 2... Lower cross beam, 3, 3... Frame, 4, . 4', 5...Rail, 8...Moving member, 9...
Hot plate, r 1) 10, 10'... Movable plate, 11, n'... Fluid cylinder, 12, 12'... Ram, 13, 13'
... Spherical bush, 24 ... Plate to be processed,

Claims (1)

[Claims] 1. A plurality of heat plates and a movable plate are suspended between the frames arranged on the left and right, or elastically supported at their four points, and can be opened and closed in the left and right directions. , the tip of the ram of the fluid cylinder installed on the frame side and the back of the movable platen,
A horizontal multi-stage press characterized in that the movable platen is pressurized by tilting freely according to the accumulated amount of thick and thin plates to be processed inserted between each stage of hot plates by contacting them via spherical pushers. Pressure method. 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 on the upper cross beams or rails laid on the upper and lower cross beams. The four corners of the press are suspended or elastically supported so that they can be opened and closed in the left and right directions, and the adjacent hot plates and the movable platen are arranged so that the spacing between the hot plates is equal when the press is opened is near the four corners. furthermore, a spherical bush is supported at the tip of a ram of a fluid cylinder disposed on the frame, and the spherical bush is inserted and supported by a support mounted on the back of the movable platen. This is a horizontal multi-stage press uniform pressure device.