JPS60259402A - Method and device for opening and closing 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 The present invention is a horizontal multi-stage press in which a plurality of heating plates are arranged in parallel between frames placed opposite each other on the left and right sides to heat a plate to be processed, such as plywood, decorative board, or veneer veneer. When pressurizing, by contracting, closing, or expanding the heating plates at each stage almost equally, the movable platen is rapidly advanced until the plate to be processed is heated and pressurized when the press is closed, and the heating is continued. The present invention relates to a method and device for rapidly retracting a movable platen after the end of pressurization.

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 with the lowest hot plate, the press is closed, and the process is completed by heating and pressurizing for the required time. I had obtained a board.

In this type of vertical multi-stage press having multiple upper and lower heating plates, support claws are attached to the four corners of each heat plate to support the heat plates, and the support claws are attached to the supports in the form of a ladder step. A method is adopted in which the devices are placed one after another on the supports. Therefore, when determining the thickness of the hot plate at each stage, in addition to the strength required for heating and pressing the plate to be processed, which is the main purpose, consider the strength corresponding to the deflection and bending caused by the distance between the supporting points. Taking this into account, the thickness is greater than necessary in order to provide rigidity. 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, etc., but also the diameter of the ram cylinder, which is the means for raising and lowering the hot plates at each stage, and the supply and discharge of fluid to and from the cylinder. This may cause an increase in the pump capacity and load on the fluid pressure unit.
It was necessary to increase the size of the multi-stage press.

Therefore, in the present invention, by adopting a horizontal multi-stage press in which hot plates are arranged side by side in the left-right direction, as opposed to a vertical multi-stage press in which a plurality of hot plates are arranged in the upper and lower directions, the variation in the pressure force ρ can be reduced. In addition to attempts to correct problems such as fixing defects in adhesion to processed plates after heating and pressurizing, reducing the weight of hot plates, and downsizing fluid pressure units, etc., efforts were made to shorten the press cycle, especially the press opening/closing time. It is something that

That is, the present invention arranges a plurality of heating plates in parallel between frames arranged on the left and right sides via a movable platen, regulates the maximum opening of adjacent heating plates at equal intervals, and also controls the distance between arbitrary heating plates. The movable platen is linked to each other via a spring member, and when the press is closed, the movable platen is rapidly advanced until just before heating and pressing the plate to be processed.
Further, after the completion of heating and pressurization, the movable platen is rapidly retreated to open the press.An embodiment of an apparatus for directly carrying out the method of the present invention will be described below with reference to the accompanying drawings.

Frames 3 and 4 are installed on the left and right through a pair of upper and lower cross beams 1 and 2 arranged at arbitrary intervals in the vertical direction and the front and rear 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 are a plurality of heat plates 9 protruding from both sides of the upper part, and a movable platen, via a movable member 8 having a retaining part 7 on either side that engages with a ruler 6. 10 is suspended.

A plurality of fluid cylinders 11 are installed on the right frame 4, and the tip of each ram 12 is attached to the back of the movable platen 10. At this time, a plurality of types of plate bodies 13 having different dimensions are
When it is desired to heat and pressurize with one press, the fluid cylinder 11 and the ram 12 are made movable within each vertical plane of the right frame 4 and the movable platen 10 so that the pressurizing point is at the center. In this method, for example, a pair of sliding guides 14 are installed at the front of the right frame 4 and at the back of the movable platen 10, and a fluid cylinder 11 or a ram 1 is installed between the sliding guides 14.
The sliding plates 15 formed by fitting the sliding plates 1 and 2 are fitted and inserted.
5 is made movable by a step shaft 17 screwed into the upper and lower guide plates 16.

The plate 9 has a passageway formed therein through which a heating medium such as hot oil or steam is supplied and discharged, and the side surface located on the loading side of the plate 13 to be processed has a substantially triangular cross section. An insertion guide 18 is formed.

Further, a pair of notch grooves 19 are bored at an arbitrary interval in the lower part of the hot plate 9, and a conveyor consisting of a plurality of rolls for carrying in, supporting, and carrying out the plate 13 to be processed is provided below the notch grooves 19. The conveyor 20 is arranged between the machine frames 21 on the lower cross beam 2. At this time, a pair of push-up bodies (not shown) that intervene in the pair of notched grooves 19 and have a length approximately equivalent to the length of the hot plates 9 of all stages when the press is opened are pushed against the conveyor surface of the conveyor 20. It can appear at will.

Next, brackets 22 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 13 to be processed, A gate-shaped regulating device 23 is bridged between these adjacent brackets 22, one end of which is attached to the bracket 22, and the other end is a free end, so that the free end of the regulating device 23 is engaged with the bracket 22 when the press is released. The left and right distances between the hot plate 9 and the movable plate 10 are maintained evenly.

Further, the left and right upper and lower portions of the hot plate 9, or both upper sides as shown in the third figure, and furthermore, both upper and lower sides as shown in the fourth figure, that is, as in the above description, supports are provided for loading and unloading the plate 13 to be processed. A casing 24 is installed in a position where the press does not move, and a spring member 25 is fixed in the casing 24 so as to be retractable when the press is closed, so that adjacent casings 24 are interconnected.

In the illustrated example, the casing 24 is installed on each heating plate 9 in each stage, but it is also possible to install the casing 24 only on any heating plate 9 of a set of multiple heating plates 9. For example, when a set includes 2nd stage, 5th stage, 10th stage, etc., the casing 24 is installed on any heating plate 9 such as the 2nd stage, 5th stage, 10th stage, etc. , each casing 2
4 are connected to each other by a spring member 25.

Moreover, the one shown in FIG. 7 is a version of the above-mentioned horizontal multi-stage press 26 made into a double rotary disk type. Also on the 3rd side are the movable platen 10, fluid buffer 1-11,
12 and other parts, and both rotating plates 10
This is a horizontal multi-stage press zt in which the presses are linked as shown below.

That is, a left turning wheel 27 and a right turning wheel 28 are rotatably fixed on both upper sides of the left and right frames 3 and 4, and a checker is provided between the left and right turning wheels 27 and 28, which face each other left and right. 7. Connecting members 29 such as ropes and wires are suspended endlessly through appropriate guides (not shown) and maintained in a tensioned state.

On the other hand, left and right locking tools 30 are protruded and fixed to both upper sides of the left and right movable plates 10, respectively, and are locked to the linking member 29,
Furthermore, the right rotation wheel 28 is forcibly rotated in the forward and reverse directions so that both the rotation disks 10 can be moved toward and away from each other. This forward/reverse mechanism is a fluid motion mechanism or, as in the illustrated example, an electric motor 31 and a speed reducer 32.
By connecting the drive shaft 33 in the direction of arrow A, the right rotation wheel 28 is rotated in the direction of arrow B.

Next, the action will be explained.

First, when the fluid cylinder 11 is operated and the ram 12 is contracted, the movable platen 10 and the heat plates 9 of each stage are moved between the upper cross beams 1 by the moving member 8, and are aligned by the engagement part of the ruler 6 and the engagement part 7. It moves to the right in the figure along the rail 5 while its sides remain parallel. At the start of this movement, the spring members 25 fixed to the casing 24 are released from the pressurized state by the ram 12 and rebound all at once, returning elastically.
During the movement, the hot plates 9 at each stage expand at the same time by approximately the same amount, although there are slight differences due to the frictional resistance between the rails 5 and the moving member 8. Therefore, the free end of the restrictor 23 that restricts the maximum opening of the hot plate 9 in each stage is connected to the placket 22.
The ram 12 can be rapidly retracted and opened to a position in which it abuts the press, ie, a press release position.

Next, the plates 13 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 13 to be processed is supported at its lower end by the drive of the transport conveyor 20, and is transported to the center position in the front-rear direction of the hot plates 9 of each stage, and stopped at that position.

Further, when the push-up body is projected from below the conveyance surface of the conveyor 20 into the notch groove 19, the lower ends of the plates 13 to be processed, which are supported in parallel on the conveyor 20, are lifted all at once. , are inserted into the hot plate 9, and extend into the hot plate 9 in the vertical direction as well.

At this time, if the ram 12 is extended by the operation of the fluid cylinder 11, the press is closed, contrary to the above description, but as the movable platen 10 moves to the left, the spring member 25 is moved by approximately the same amount. , the spacing between the hot plates 9 in each stage must be uniformly contracted and closed, and the ram 12 can be rapidly extended and closed until a pressurized state is reached. Therefore, the distance between the rams 1 and 2 is equal to the distance obtained by subtracting the thickness T of the plate 13 to be processed from the interval of the hot plates 9, and multiplying by the number of stages of the hot plates 9.
2 can be rapidly extended, and this distance is, for example, 4θ distance between 9 heating plates and 4θ distance between the thickness T of the plate 13 to be processed.
If the number of stages of heating plate 9 is 10, (40-4)X
I0=360o+.

In addition, in particular, the number of 9-stage heating plates is increased, and multiple heating plates 9 are used.
If the spring members 25 are connected between arbitrary hot plates 9 as one set, the above effect can be obtained for each hot plate 9 of the unit set.

Next, as shown in FIG. 7, if the drive shaft 33 is rotated in the direction of arrow A and the right rotation wheel 28 is rotated in the direction of arrow B by forward rotation of the electric motor 31, both rotation plates 10 are centered. By moving towards the located hot plate 9, the time required for closing the press will be further halved.

After the press is closed, the plate 13 to be processed is heated and pressurized for a required period of time. At this time, in the case shown in FIG. 4, since spring members 25 are linked to both the upper and lower sides of the hot plate 9, the repulsive force in the pressing direction acts almost equally, but as shown in FIG. If the spring members 25 are connected only to both sides of the upper part of the hot plate 9, the repulsive force acts only on the upper part of the hot plate 9 during heating and pressurization, and the pressing force is not affected. , the fluid cylinder 11 and the ram 12 are moved slightly upward by the multi-feed shaft 17 to adjust their pressurizing points.

After heating and pressurizing, the press is opened in the same manner as described above, and the heated and pressurized processed plate is carried out to an unloader.

As described above, according to the present invention, a plurality of heating plates are arranged in parallel between the left and right frames via movable plates, and the maximum opening of adjacent heating plates is regulated at equal intervals. Arbitrary hot plates are connected to each other via a spring member,
When the press is closed, the movable platen is rapidly advanced until just before heating and pressing the plate to be processed, and after heating and pressing, the movable platen is rapidly retracted to open the press, so the spacing between the hot plates at each stage is almost the same. The press is evenly contracted, closed, or expanded, and the time required for opening and closing the press, which constitutes the press cycle, can be significantly shortened.

Therefore, the movement of the hot plate, especially when the press is closed, is not a conventional process in which adjacent hot plates are pushed sequentially through the plate to be processed, but the hot plate of each stage is moved until just before the press is closed. Since the plate to be processed inserted between them is not heated and pressurized, even if the extension speed of the ram of the fluid cylinder is significantly increased,
It is possible to heat and press each plate to be processed at the same time without damaging the plate to be processed.

Furthermore, when the press is closed, the plate to be processed is not pressurized.
Since the time for leaving the adhesive between the hot plates of each stage is significantly shortened, it is possible to prevent the adhesive from accelerating thermal curing, and to avoid one of the causes of poor adhesion in the treated plate after heating and pressing.

[Brief explanation of the drawing]

Figure 1 is a plan view showing one embodiment of the present invention, and Figure 2 is a plan view of the first embodiment.
FIG. 3 is a perspective view of the main part; FIG. 4 is a perspective view of the main part of another embodiment of the present invention; FIGS. 5 and 6 are explanatory diagrams of operation; FIG. 7 FIG. 3 is a plan view showing another embodiment of the present invention. ■... Upper cross beam, 2... Lower cross beam, 3... Left frame, 4... Right frame, 5... Rail, 8... Moving member, 9... Hot plate, 10...・・Movable plate, 22・・Bracket, edict・Regulator, 24・・Casing, 25・
...Spring member patent applicant: Taihei Seisakusho Co., Ltd.

Claims (1)

[Claims] 1. A plurality of heating plates are arranged in parallel between the left and right frames via a movable plate, and the maximum opening of adjacent heating plates is regulated at equal intervals, and arbitrary heating is possible. The plates are connected to each other via a spring member, and when the press is closed, the movable platen is rapidly advanced until just before heating and pressing the plate to be processed, and after heating and pressing is finished, the movable platen is rapidly retreated. A method for opening and closing a horizontal multi-stage press characterized by opening the press. 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 installed on the left and right sides via moving members on the rails laid on the upper cross beams. In addition to being able to open and close in any direction, brackets and restraints are installed near the four corners of the adjacent hot plates and movable platen to maintain equal spacing between the hot plates when the press is opened, and are further attached to any hot plate. An opening/closing device for a horizontal multi-stage press, characterized in that a spring member is fixed to the casing so as to be retractable when the press is closed, and the spring members are interconnected with each other.