JPS6164401A - Method of supporting plate body of 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] To a horizontal multi-stage press consisting of stage hot plates arranged side by side so that they can be opened and closed,
The present invention relates to a method for supporting a plate to be treated, such as plywood, decorative board, veneer veneer, etc., to a heated and pressurized position.

Normally, 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 them, the movable platen is raised, and the hot plates above are pushed up sequentially starting from the lowest hot plate to close the press.
A treated plate was obtained by heating and pressurizing for a required period of time.

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 took into account the degree of gravel that corresponds to the deflection and bending caused by the distance between the supporting points, and in order to provide rigidity, we made it thicker 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 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 multistage 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 processed plates after heating and pressurizing, to reduce the weight of hot plates, and to downsize fluid pressure units. The plates to be processed are once placed in parallel on a conveyor, and then pushed up to an appropriate pressurizing position between the hot plates and heated and pressurized. Since it is in a state where it protrudes, it is not possible to enjoy appropriate pressurization.

In addition, when heating and pressurizing, the moisture contained in the plate to be processed is vaporized and released outside the hot plate, but since the push-up body that supports the lower end of the plate to be processed is at room temperature, the steam does not evaporate. Condensation condenses on the push-up body to form water droplets, and these water droplets are absorbed by the lower part of the plate to be treated, causing problems such as partial peeling or remaining as two stains.

In view of the above, the present invention has been developed to provide a
In a horizontal multi-stage press consisting of a plurality of rows of hot plates that can be opened and closed at regular intervals, the plates to be processed that are carried onto the conveyor and placed in parallel are protruded from below the conveying surface of the conveyor. The hot plate is lifted up by a pair of push-up bodies that intervene up to a pair of notch grooves carved in the lower end of the hot plate, inserted into the pressurizing position between the hot plates, the press is closed, and the push-up bodies are lowered once to be processed. The processed plate is supported by releasing the support state for the plate and raising the pusher again after applying heat and pressure. do.

Frames 3.4 are installed on the left and right sides via a pair of upper and lower cross beams 1 and 2 arranged at arbitrary intervals in the vertical direction and the front and back directions, and rails 5 are laid on the upper cross beams 1.
A ruler 6 is attached to one of them. Between the rails 5, a movable member 8 having a retaining portion 7 that engages with a ruler 6 on either side is attached to protrude from both sides of the upper portion of the plurality of stages of hot plates 9 and the movable platen 10. , hot plate 9, movable plate 1
0 is hanging.

A plurality of fluid cylinders 11 are provided in the one frame 4.
is installed, and the tip of the ram 12 is 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 direction.

Next, the hot plate 9 has a supply port 13 at the top to supply and discharge a heating medium such as hot oil or steam to the passage formed inside the hot plate 9.
, a discharge port 14 is installed at the lower part, and an insertion guide 16 having a substantially triangular cross section is formed on the side surface of the plate to be processed 15 located on the loading side.

Further, brackets 17 are attached to the left and right upper and lower parts of the hot plate 9 and the movable platen IO, 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 15 to be processed. A gate-shaped regulating device 18 is bridged between adjacent brackets 17, one end of which is attached to the bracket 17, and the other end is a free end, so that the free end of the regulating device 18 is attached to the bracket 17 when the press is released. Lock and heat plate 9
In addition, the left and right spacing of the movable ff11O is maintained evenly.

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 grooves 19 are formed a plurality of rolls for conveying and placing the plate bodies 15 to be processed in parallel and carrying them out. A conveyor 20 consisting of the following is disposed between the machine frames 21 on the lower cross beam 2.

Furthermore, in order to intervene in the pair of notched grooves I9 and to allow a pair of push-up bodies 22 approximately corresponding to the length of the hot plates 9 of all stages when the press is opened to be freely retractable from the conveying surface of the conveyor 20, Elevation is provided by a one-way crank lever using screw movement, rack and pinion movement, or fluid movement as shown.

Specifically, a double-rond type push-up fluid cylinder 24 is fixed to the support frame 23 horizontally suspended between the lower cross beams 2, and a lever 27 is pin-connected to both ends of the piston rod 25 via a link 26. The other end of the lever 27 is pivotally supported via a bearing 28 on a pair of shafts 29 supported between the lower cross beams 2, and the other end of an arm 30 pinned to these shafts 29 is connected to the pair of push-up bodies 22. It was supported by

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 5 of the upper cross beam 1, but next, the lower cross beam 2 also has a rail 5. ', and at least one of the upper and lower parts of the upper and lower rails 5.5' is slidably supported along the guide surface 31 formed on the upper cross beam 1 or the lower cross beam 2, Another embodiment in which the four points of the hot plate 9 and the movable platen 10 are elastically supported by elastically mounting the moving member 8 will be described with reference to FIGS. 4 and 5. Note that parts that have already been described are given the same numbers and will not be described repeatedly.

First, in FIG. 4, the lower rail 5' is slidable along the guide surface 31 of the lower cross beam 2, and a spring member 32 is fixed to the upper surface of the lower qJ beam 2 and the lower surface of the lower rail 5'. Under normal conditions, the lower rail 5' is pushed up with a constant pressure. Conversely, FIG. 5 shows an example in which the upper rail 5 is urged downward by a constant pressure, which means that the upper rail 5 is pressed against the guide surface 31 of the upper cross beam 1. On the other hand, small fluid cylinders 33 are pivotally supported at appropriate intervals on the lower surface of the upper cross beam 1, and the tip of the piston rod 34 is attached to the upper surface of the upper rail 5. It is.

When the fluid cylinder 11 is actuated to reduce the ram 12, the movable platen 10 and the hot plate 9 are suspended between the upper cross beams 1 by the moving member 8, and the engagement between the ruler 6 and the engaging portion 7 is suspended. While one side is kept parallel by the joint, the rail 5
Move along to the right in the diagram.

At this time, as shown in FIGS. 4 and 5, if the four points are elastically supported, that is, as shown in FIG. 4, the lower rail 5' is pushed up from above the lower cross beam 2. in case of,
In effect, the hot plate 9 and the movable platen 10 are suspended from the upper cross beam 1, and conversely, when the upper rail 5 is pushed down from the upper cross beam 1 as shown in FIG. In effect,
The hot plate 9 and the movable platen 10 are mounted on the lower cross beam 2.

In either case, the movable member 8 is elastically restrained by the rails 5, 5' at the four points of the hot plate 9 and the movable platen 10,
It will roll smoothly.

During this movement, the free ends of the regulating devices 18 from the leftmost hot plate 9 come into contact with the brackets 17 of the adjacent hot plates 9 at their four corners, and their maximum opening is sequentially regulated. Maintaining the left and right spacing of the heating plates 9 of the tiers evenly,
The press becomes open.

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 carried-in processing target plate 15 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 plate 9 of each stage.
It will be stopped at that position.

At this time, the push-up body 22, which had been sunk below the conveyance surface of the conveyor 20, is moved by the action of the push-up fluid cylinder 24.

The lower ends of the plate bodies 15 to be processed, which are placed in parallel on the conveyor 20, are raised and inserted between the pair of notch grooves 19 of the hot plate 9. Therefore, the plate 15 to be processed reaches inside the hot plate 9 in the vertical direction as well, and in this state, if the ram 12 is extended by the operation of the fluid cylinder 11, the press is closed, contrary to the above description.

Therefore, from the supported state of the push-up body 22, the plate body 15 to be processed is
A state of clamping and pressurization occurs between the hot plates 9, and at this time, the push-up body 22 is lowered by the operation of the push-up fluid cylinder 24,
The support state for the plate 15 to be processed is temporarily released. The plate 15 to be processed is heated and pressurized by the heating action of the hot plate 9 and the pressurizing action of the fluid cylinder 11. During this heating and pressurization, the moisture contained inside the plate 15 to be processed is vaporized. It will be released outside the hot plate 9.

At the end of heating and pressurization, the push-up fluid cylinder 24 is operated again to insert the push-up body 22 into the notch groove 19, and then,
When the press is opened by the contraction movement of the ram I2, the processed plate is returned from the clamped and pressurized state to the supported state by the push-up body 22 again.

Next, by sinking the push-up body 22 under the conveyance surface of the conveyor 20, the processed plates are placed in parallel on the conveyor 20 and transported to the unloader.0 As described above, according to the method of the present invention, , in a horizontal multistage press consisting of multiple rows of hot plates that can be opened and closed at equal intervals between frames installed on the left and right, the plates to be processed are carried onto a conveyor and placed in parallel. The body is lifted by a pair of push-up bodies that protrude from below the conveyance surface of the conveyor and intervenes up to a pair of notch grooves carved in the lower end of the hot plates, is inserted into a pressurizing position between the hot plates, and the press is closed. By lowering the push-up body once to release the support state for the plate to be processed, and then raising the push-up body again after applying heat and pressure,
Since the press is opened while supporting the treated plate, first, the plate to be treated is completely inserted into the hot water both in the vertical direction, and the insufficient pressing force on the lower Z1, 1 part is eliminated. Ru.

Furthermore, since the push-up body is separated from the plate to be processed during heating and pressurization, the above-mentioned inconvenience to the processed plate can be avoided.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing one embodiment of the method of the present invention, Fig. 2 is a front view of the same, Fig. 3 is a perspective view of the same main part, and Figs. 4 and 5 are other embodiments. FIG.

Claims (1)

[Claims] In a horizontal multistage press consisting of multiple rows of hot plates that can be opened and closed at equal intervals between frames installed on the left and right, plates to be processed are carried onto a conveyor and placed in parallel. is lifted by a pair of push-up bodies that protrude from below the conveying surface of the conveyor and intervene up to a pair of notch grooves carved in the lower end of the hot plate, inserted into the pressurized position between the hot plates, and the press is closed. A horizontal type characterized in that the push-up body is lowered once to release the support state for the plate to be processed, and after heating and pressurizing, the push-up body is raised again to support the processed plate and open the press. A method of supporting plates in a multi-stage press.