JPH0550361B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention provides a method for producing plywood, decorative boards,
In a horizontal multi-stage press that heats and presses a plate to be processed such as a veneer veneer, the fluid cylinder and tom are integrated in the vertical direction to accommodate the different dimensions of the plate to be processed inserted between hot plates. In addition, in the shipping direction, in conjunction with this vertical movement, the position of the stopper that regulates the front end of the plate to be processed is moved back and forth, so that the pressure point in the vertical plane is
This relates to adjusting the pressure point so that it is located approximately in the center.

``Prior art'' Multi-stage presses, which are usually used mainly in the plywood manufacturing process, have a movable platen that can be raised and lowered by a ram cylinder installed in the lower frame, and multiple stages of hot plates are installed 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 the hot plates above are successively pushed up, starting from the lowest hot plate, and the press is closed. A treated plate was obtained by heating and pressurizing.

"Problems to be Solved by the Invention" However, in this type of multi-stage press having a plurality of upper and lower heating plates, when supporting each stage of heating plates, support claws are attached to the four corners.
A method is adopted in which the supporting claws are placed one after another on a ladder-like supporting device attached to a support. Therefore, when determining the thickness of the hot plates at each stage, in addition to the strength required for heating and pressing the plate to be processed, which is the main purpose, it is necessary to consider the strength to accommodate 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 pressure applied to the treated plate, resulting in poor adhesion and thinning of the treated plate, but also the diameter of the ram cylinder, which is the means to raise and lower the hot plates at each stage, and the pump that supplies fluid to the cylinder. This may cause an increase in the capacity and load on the fluid pressure unit.
It was necessary to increase the size of the multi-stage press.

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 these have not yet been put into practical use due to the following reasons. It has not yet been reached.

In other words, in a vertical multi-stage press, when multiple cylinders are usually arranged on the lower frame,
By supporting the movable plate so that the rams are positioned approximately at the center at equal intervals across the length and breadth of the movable plate,
Pressure is applied in a well-balanced manner almost at the center of the heat point. Therefore, the plate to be processed is placed at approximately the center of the hot plate by the pusher that pushes its rear end and intervenes between the hot plates, so that the pressure point on the plate when heating and pressurizing is fixed. is located approximately in the center, resulting in a good pressure balance from the center to the four peripheral areas. Moreover, according to this mechanism, even if the dimensions of the plate to be processed differ, by adjusting the working distance of the pusher each time, it is possible to place the plate at approximately the center position of the hot plate. A good pressurization balance is obtained as described.

However, in a horizontal multistage press,
It is not possible to place the plate to be processed on the hot plates arranged vertically in parallel, and the lower end of the plate is supported and inserted almost upright between the hot plates. It becomes impossible to push the lower end of the hot plate higher than the lower end of the hot plate. Therefore, when the vertical and horizontal dimensions of the plate to be processed increase or decrease proportionally, the pressure positions in the vertical direction and the conveyance direction are shifted, and the pressure applied to the plate to be processed is applied from the center position to the four peripheral parts. The balance is impaired, and the treated plate may become thick or thin, or it may not be able to receive an appropriate pressing force, resulting in problems such as peeling.

``Means for Solving the Problems'' In view of the above, the present invention includes heating plates that can be opened and closed at equal intervals between the left and right frames.
In a horizontal multi-stage press consisting of multiple stages arranged side by side, the fluid cylinder installed on the frame side and the ram installed on the movable platen side are moved up and down integrally according to the dimensions of the plate to be processed. In conjunction with this vertical movement, the position of the stopper is moved back and forth to control the stopping position of the plate to be processed, thereby improving the pressure balance.

“Examples” Examples of the present invention will be described below based on the attached drawings.
First, the configuration will be explained.

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 rails 5, a plurality of heat plates 9 are attached, protruding from both sides of the upper part, and movable A board 10 is suspended. Next, the hot plate 9 is provided with a supply port 11 at the top and a discharge port 12 at the bottom in order to supply a heating medium such as hot oil or steam to the passage formed inside the hot plate 9. An insertion guide 14 having a sharp tip and a substantially triangular cross section is formed on the side surface of the processing plate 13 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
3. Near the four corners that will not impede the loading and unloading of
The brackets 15 are each attached, and a gate-shaped regulating device 16 is bridged between these adjacent brackets 15, one end of which is attached to the bracket 15, the other end is a free end, and the regulating device is closed when the press is opened. 1
6 is locked to the bracket 15, and the hot plate 9
In addition, the left and right spacing of the movable platen 10 is maintained evenly.

Next, a pair of notch grooves 17 are bored at arbitrary intervals in the lower part of the hot plate 9, and a conveyor consisting of a plurality of rolls is installed below the grooves 17 for carrying in, supporting, and carrying out the plate 13 to be processed. 18 is arranged between the machine frames 19 on the lower cross beam 2.

In addition, on the discharge side of this conveyor 18, there is a lower cross beam 2.
A stopper 22, which is connected to a piston rod 21 of a screw mechanism or a positioning fluid cylinder 20 which is appropriately pivoted on the top of the conveyor 1, and whose stopping position is movable in the conveying direction, is also attached to the conveyor 1.
Between 8 and 8, a pair of push-up bodies 23 intervening in the pair of notch grooves 17 are movable into and out of the conveying surface, and approximately correspond to the length of the hot plates 9 of all stages when the press is opened. Each is placed.

Furthermore, a pair of sliding guides 24 are mounted vertically on the one frame 4 facing each other at a constant interval, and a pair of sliding guides 24 are fitted between the sliding guides 24. A plurality of fluid cylinders 26 are fitted into the sliding plate 25 at approximately equal intervals. On the other hand, a pair of sliding guides 27 are also provided on the back of the movable platen 10 in the vertical direction.
A sliding plate 29 is fitted into each sliding guide 27, and a ram 28 is fitted and held therein.

Next, a hole is made through the vicinity of both ends of the sliding plate 25 on the side of the frame 4, and a female screw is formed in the hole, and a step screw 31 whose upper and lower parts are held by the guide plate 30 is screwed into the hole. By rotating the feed screw 31 in the forward and reverse directions, the sliding plate 25 can be moved upwardly and downwardly.

Note that the sliding plate 2 is disposed along the left and right sliding guides 24.
5 can be moved up and down by means such as rack and pinion movement or fluid movement as shown in FIG. That is, a pair of fluid cylinders 32 for vertical movement are pivotally fixed near both ends of the sliding plate 25, and the tips of each piston rod 33 are pivotally fixed to the frame 4.

Further, in the above embodiment based on FIGS. 1 to 6, 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 and 5' is supported so as to be able to slide freely along the guide surface 34 formed on the upper cross beam 1 or the lower cross beam 2. Another embodiment in which four points of the hot plate 9 and the movable platen 10 are elastically supported by elastically mounting the movable member 8 will be described with reference to FIGS. 7 to 9. still,
Assign the same numbers to parts that have already been explained, and avoid repeating the explanations.

The upper and lower rails 5 laid between the upper and lower cross beams 1 and 2,
5', rulers 6, 6' are attached to the upper and lower opposite sides of one of them, and the movable members 8,
Engaging portions 7, 7' that engage with the rulers 6, 6' are disposed above and below one of the rulers 8'.

On the other hand, fluid cylinders 26, 26' are disposed on the left and right frames 3, 4, and their rams 28, 28' are disposed on the movable plates 10, 10', respectively, as in the previous embodiment, and are located on both sides. A hot plate 9 is opened and closed toward the center.

One of the upper and lower rails 5, 5' is biased against the other with a constant pressure, and in the illustrated example, the lower rail 5' is slidable along the guide surface 34 of the lower cross beam 2. A spring member 35 is fixedly connected to the upper surface of the lower cross beam 2 and the lower surface of the lower rail 5', and normally pushes up the lower rail 5' with a constant pressure.

Next, the effect will be explained.

First, the fluid cylinder 26 is actuated so that the ram 28
When reduced, one side of the movable platen 10 and the heating plates 9 of each stage are maintained in a parallel state between the upper cross beams 1 by the engagement movement of the ruler 6 and the engagement part 7 via the moving member 8. while moving along the rail 5 to the right in the figure.
During this movement, the free ends of the restricting tools 16 from the leftmost hot plate 9 come into contact with the brackets 15 of the adjacent hot plates 9 at their four corners, sequentially restricting the maximum opening of each stage. The left and right spacing between the hot plates 9 is maintained evenly, and the press is in an open state.

At this time, in the embodiment shown in FIGS. 7 to 9, both movable plates 10, 10' and the heating plates 9 of each stage are
Via the moving members 8, 8', it moves in both left and right directions in the figure while being elastically mounted on the upper and lower rails 5, 5', and enters the press open state as described above.

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 lower end of the loaded plate 13 is supported by the drive of the conveyor 18, and the central position of the plate 13 in the transport direction reaches the central position of the hot plates 9 in each stage in the front-rear direction. Stopper 2 set as
2, the front lower end is stopped and stopped.

At this time, the push-up body 23 is inserted into the notch groove 17 from below the conveying surface.
When it protrudes to the inside, the plate 13 to be processed on the conveyor 18 is lifted and inserted between the hot plates 9.
Under this condition, when the rams 28, 28' are extended by operating the fluid cylinders 26, 26', the press is closed, contrary to the above description, and the plate 13 to be processed is heated and pressurized. The stopper 22 and pusher body 23 are recessed below the conveying surface of the conveyor 18.
After heating and pressurizing, the processed plate is transported to an unloader.

However, the plate to be processed 1 to be carried in next time
3 have different dimensions, in each case the fluid cylinders 26, 26', the rams 28,
28' is moved up and down, and the stopper 22 is moved forward and backward in the conveying direction.

If the size of the plate 13 to be processed is reduced only in the vertical direction, the position of the stopper 22 is fixed, and the position of the stopper 22 is fixed, and the stopper 22 is moved by the screw movement of the step screw 31 or by the operation of the fluid cylinder 32 for vertical movement. The vertical position of each fluid cylinder 26, 26' is adjusted by fitting and sliding the sliding plates 25, 25' onto the sliding guides 24, 24'. In addition, in synchronization with this, the sliding plates 29, 29' fit and slide between the sliding guides 27, 27', so that the rams 28, 2
The position of 8' is also adjusted so that the pressure point reaches approximately the center of the plate 13 in the longitudinal direction.

Next, when the vertical and horizontal dimensions of the plate 13 to be processed are reduced in multiple steps from the position shown by the solid line in FIG. 4 to the position shown by the solid line in FIG. 5, the left and right frames 3 described above, 4 and movable plates 10, 10'
The positioning fluid cylinder 20 is operated in conjunction with the vertical movement of the back of the stopper 22 to move the stopper 22 backward in the transport direction.

That is, the piston rod 21 is reduced by half the amount by which the lateral dimension of the plate 13 to be processed is reduced, and the center position of the plate 13 to be processed in the conveying direction is moved to the center position in the front-rear direction of the hot plate 9 of each stage. The pressure point is also adjusted in the lateral direction of the plate 13 to be processed.

In addition, depending on the vertical and horizontal dimensions of the plate 13 to be processed to be carried in, the vertical movement by the step screw 31 and the position where the moving object is regulated by the positioning fluid cylinder 20 are determined in advance using a detector, a counter, etc. If set, the pressure point can be adjusted even more smoothly.

``Effects'' As described above, according to the present invention, in a horizontal multi-stage press in which a plurality of heat plates that can be opened and closed at equal intervals are arranged in parallel between the left and right frames, Depending on the dimensions of the plate, the fluid cylinder installed on the frame side and the ram installed on the movable platen are moved up and down together, and in conjunction with this vertical movement, the position of the stopper is moved forward or backward. Since the stop position of the plate to be processed is controlled, the pressurizing point is always at approximately the center of the plate to be processed, and a good pressure balance can be achieved.

As a result, it is possible to eliminate problems such as thickening and thinning of the processed plate due to misalignment of the pressurizing point, and peeling that occurs mainly at the four peripheral edges. The plate to be treated can also be used for heating and pressurizing.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of a horizontal multi-stage press, Fig. 2 is a side view of Fig. 1, Fig. 3 is a perspective view of main parts, and Fig. 4 is a view taken along the line A-A in Fig. 1. Fig. 5 is an explanatory diagram of operation, Fig. 6 is an explanatory diagram of operation showing another embodiment of the horizontal multi-stage press, Fig. 7 is a plan view showing another embodiment of the horizontal multi-stage press, and Fig. 8 is an illustration of operation. Side view of Figure 7, No. 9
The figure is a view taken along the line B--B in FIG. 7. 1... Upper cross beam, 2... Lower cross beam, 3... Left frame, 4... Right frame, 5... Rail, 8... Moving member, 9... Hot plate, 10... Movable plate, 13... Plate to be processed, 16... Regulating tool, 18... Conveyor,
22... Stopper, 25, 29... Sliding plate, 2
4, 27...Sliding guide, 26...Fluid cylinder, 28...Ram.

Claims (1)

[Claims] 1. Frames are installed on the left and right through a pair of upper and lower cross beams arranged at arbitrary intervals, and the upper cross beams,
Alternatively, multiple stages of heating plates and movable plates can be freely opened and closed in the left and right direction via moving members on rails laid on the upper and lower cross beams, and press openings are provided near the four corners of the adjacent heating plates and movable plates. A regulating device is installed to maintain an equal spacing between the hot plates, and a conveyor is provided below the hot plate to convey the plate to be processed to a stopper position, and the heat plate is attached to the frame and the movable platen. A horizontal multi-stage press characterized in that the fluid cylinder and the ram are integrally movable up and down along a sliding guide, and the stopper is moved forward and backward in the conveying direction in conjunction with this up and down movement. Pressure point adjustment device.