JPS62196103A - Pressure point regulator in 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 arranging multiple tiers of heating plates in a manner that can be freely arranged between left and right frames. In a horizontal multi-stage press that heats and presses a plate to be processed, such as a press, the fluid cylinder and ram are moved up and down integrally in the vertical direction to accommodate the different dimensions of the plate to be processed inserted between the hot plates. In addition, in the transport direction, in conjunction with this vertical movement, the position of the stopper that regulates the front end of the plate to be processed is advanced or retreated so that the pressurizing point in the vertical plane is located at the center of the plate. This is related to the adjustment of the pressurizing point.

``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.

``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,
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 hot plates at each stage, in addition to the strength required to heat and press the plate to be processed, which is the main purpose, also consider the strength that corresponds to the deflection and bending caused by the distance between the supporting points. Taking this into consideration, it is thicker 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 load on the capacity and 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.
Eliminate poor adhesion to treated plates after heating and pressurizing,
Attempts have been made to reduce the weight of the hot plate or the size of the fluid pressure unit, but these efforts have not yet been put to practical use due to the following circumstances.

That is, in a vertical multi-stage press, when multiple cylinders are normally arranged on the lower frame, it is possible to position the rams at equal intervals in the length and width of the movable plate so that the rams are located approximately in the center.
By supporting the hot plate, pressure is applied in a well-balanced manner to approximately the center of the hot plate.

Therefore, the plate to be processed is placed at approximately the center of the hot plate by the button that pushes its rear end and intervenes between the hot plates, so that the pressure point on the plate to be processed during heating and pressing is approximately the same. It is located in the center and has a good pressurizing balance from the center to the four peripheral parts.

Furthermore, according to this mechanism, even if the dimensions of the plate to be processed differ, by adjusting the operating distance of the bushing each time, it is possible to place the plate at approximately the center of the hot plate. A good pressurization balance can be obtained.

However, in a horizontal multi-stage press, it is not possible to place the plate to be processed on the hot plates arranged vertically in parallel, and the plate to be processed is supported by its lower end and inserted between the hot plates in an almost upright position. As a result, it becomes impossible to push the lower end of the plate to be processed 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 four peripheral parts of the plate to be processed varies from the center position. ″
As a result, 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 is based on the frame questions arranged on the left and right.
In a horizontal multi-stage press consisting of a plurality of rows of hot plates that can be idled at regular intervals, a fluid cylinder installed on the frame side and a movable platen side are installed in accordance with the dimensions of the plate to be processed. In addition to integrally moving the rams installed in the
In conjunction with this vertical movement, the position of the stopper moves back and forth, and the stopping position of the plate to be processed is determined! I/I? aLz, which improves the pressurization balance.

``Example'' Hereinafter, an example of the present invention will be described based on the accompanying drawings, starting from the configuration.

Frames 3.4 are installed on the left and right sides via a pair of upper and lower cross beams 1.2 arranged at arbitrary intervals in the vertical direction and the front and rear directions, and rails 5 are installed on the upper cross beams l.
A ruler 6 is attached to one of them. On each of the five rails, an engaging portion 7 that engages with a ruler 6 is attached via a movable member 8 disposed on either side, and a plurality of heat plates 9 are attached to protrude from both sides of the upper portion, as well as a 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. On the side surface of the processing plate 13 located on the loading side, there is an insertion guide 1 having a substantially triangular cross section with a sharp tip.
4 is formed.

In addition, brackets 15 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 circular restrictor 16 is bridged between adjacent brackets 15, one end of which is attached to the bracket 15, and the other end is a free end. The left and right distances between the hot plate 9 and the movable plate IO are maintained evenly.

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

Note that the conveyor 18 is connected to a screw mechanism pivotably fixed on the lower cross beam 2 or to a piston rod 21 of a positioning fluid cylinder 20 on the unloading side of the conveyor 18, and is connected to a piston rod 21 of a fluid cylinder 20 for positioning to move the stopping position in the conveying direction. A freely closed stopper 22 is provided between the conveyor 18, and a pair of dosing bodies 23 intervening in the pair of notched grooves 17 are provided so as to be able to freely appear and retract from the conveying surface and to cover all stages when the press is opened. The lengths of the hot plates 9 are approximately equivalent to each other.

Furthermore, a pair of sliding guides 24 are installed vertically on one of the frames 4 facing each other at a constant interval, and a pair of sliding guides 24 are fitted to the 24 sliding guides. A plurality of fluid cylinders 26 are fitted into the sliding plate 25 at approximately equal intervals.

On the other hand, a pair of NgjJ guides 27 corresponding to the number of rams 280 are attached to the back of the movable platen 1O facing each other in the vertical direction. are fitted into each other, and the ram 28 is fitted and held therein.

Next, after drilling holes in the vicinity of both ends of the sliding plate 250 of the frame 4@, a female screw is formed in the drilled portion, and a stepping screw 31 whose upper and lower portions are held by the guide plate 30 is formed.
is screwed in, and the sliding plate 25 can be moved upwardly and downwardly by rotating the forwarding screw 31 in the forward and reverse directions.

In order to move the sliding plate 25 up and down along the left-right sliding guide 24, it is also possible to use rack and pinion movement, fluid movement as shown in FIG. 6, or the like. That is, a pair of fluid cylinders 32 for vertical movement are pivotally fixed near both ends of the sliding plate 250, 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 plate 10 are suspended from the rail 5 of the upper cross beam 1, but next, the lower cross beam 2 is also provided with a rail. 5', and at least one of the upper and lower parts of the upper and lower rails 5 and 5' is slidably supported 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. Note that parts that have already been described are given the same numbers and will not be described repeatedly.

Of the 5.5゛ upper and lower rails laid on the upper and lower bridges 1.2,
Rulers 6, 6' are attached to the upper and lower sides of one of the movable members 8, 8', and rulers 6, 6' are attached to the upper and lower sides of either of the movable members 8, 8'. The engaging portion 7,
7' is provided.

On the other hand, the left and right frames 3.4 have fluid cylinders 26,
26', and its rams 28 and 28' are movable plate 1
0.10', respectively, as in the previous embodiment, and the hot plates 9 located on both sides can be 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, and a spring member 3 is attached to the upper surface of the lower cross beam 2 and the lower surface of the lower rail 5'.
5 are properly attached and connected, and under normal conditions, the lower rail 5' is pushed up with a constant pressure.

Next, the effect will be explained.

First, when the fluid cylinder 26 is actuated to reduce the ram 28, the hot plate 9 of each stage of the movable platen 101 moves the upper horizontal beam 1 through the movable member 8 by the engagement part of the ruler 6 and the engagement part 7. ,
- the example moves to the right in the figure along the rail 5 while remaining parallel; During this movement, the free ends of the regulating tools I6 contact the brackets 15 of the adjacent heating plates 9 at the four corners of the heating plate 9 located at the left end, thereby sequentially regulating 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 FIG. 7 to FIG.
', 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 to the hot plates 9 of each stage, which are maintained at a required temperature by being supplied with a heating medium. The plate to be processed is brought in! 3 is supported at its lower end by the drive of the conveyor 18, and the stopper 22 is set so that the center position of the processing target plate 13 in the conveyance direction reaches the center position of the hot plate 9 in each stage in the front-rear direction. The front lower end is stopped and stopped.

At this time, the push-up body 23 is cut out from below the conveying surface yi1? When it is protruded to the inside, the plate 13 to be processed on the conveyor 18 is lifted and inserted into the nine hot plates. Under these conditions, the operation of the fluid cylinders 26, 26' causes the ram 28.2 to
If 8' is extended, the press closes, contrary to the above description,
The plate 13 to be processed is heated and pressurized, and during this time, the stopper 22
In addition, the push-up body 23 is recessed below the conveyance surface of the conveyor 18. After heating and pressurizing, the processed plate is transported to an unloader.

However, if the dimensions of the plate to be processed 13 to be carried in next time are different, the fluid cylinders 26, 26' and the rams 28, 28' are moved up and down in the following order each time, and the stopper 22 is moved up and down. Move forward and backward in the transport 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 each movement is made by screwing the step screw 31 or by operating the fluid cylinder 32 for vertical movement. The vertical position of the fluid cylinders 26, 26' is adjusted by fitting and sliding the sliding plates 25, 25' with respect to the sliding guides 24, 24'. In addition, in synchronization with this, the sliding guide 27.27'
Since the sliding plates 29 and 29° fit and slide between them, the ram 2
The positions of 8 and 28' are also adjusted so that the pressurizing point reaches approximately the center position in the longitudinal direction of the plate 13 to be processed.

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. 4
Also, in conjunction with the vertical movement of the back of the movable plates to and to',
The positioning fluid cylinder 20 is operated 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, so that the center position of the plate 13 to be processed in the conveying direction becomes the center position of the hot plate 9 in each stage in the front-rear direction. 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 regulating position of the vertical movement by the step screw 31 and the forward and backward movement by the positioning fluid cylinder 20 is set in advance by a detector, a counter, etc. By doing so, 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, A fluid cylinder arranged on the frame side according to the dimensions of the plate;
The ram installed on the movable platen side moves up and down integrally, and in conjunction with this up and down movement, the position of the stopper moves forward and backward to control the stop position of the plate to be processed, so the plate to be processed is The pressure point is always placed at approximately the center of the body, and a good pressure balance can be achieved.

Therefore, 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 mainly occurs on the four peripheral edges, and in one horizontal multi-stage press,
It is possible to heat and press a plurality of types of plates having different dimensions.

[Brief explanation of drawings]

Figure 1 is a plan view showing one embodiment of a horizontal multi-stage press;
The figure is a side view of Fig. 1, Fig. 3 is a perspective view of the main part, Fig. 4 is a view taken along the line A-A of Fig. 1, Fig. 5 is an operation explanatory diagram, and Fig. 6 is a diagram of An operation explanatory diagram showing another embodiment, FIG. 7 is a plan view showing another embodiment of the horizontal multi-stage press, FIG. 8 is a side view of FIG. 7, and FIG. 9 is a line BB in FIG. 7. It is an arrow view. 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... Regulator, 18... Conveyor, 2
2...stopper, 25, 29...sliding plate,
24, 27...Sliding guide, 26...Fluid cylinder, 28...Ram, Patent applicant: Taihei Seisakusho Co., Ltd.

Claims (1)

[Claims] Frames are installed on the left and right through a pair of upper and lower cross beams arranged at arbitrary intervals, and a plurality of heat plates are installed on the upper cross beams or rails laid on the upper and lower cross beams via moving members,
In addition, the movable platen can be freely opened and closed in the left and right directions, and regulating devices are installed near the adjacent hot plates and the four corners of the movable platen to maintain equal spacing between the hot plates when the press is opened, and A conveyor for conveying the plate to be processed to a stopper position is disposed below, and a fluid cylinder and a ram can be moved up and down integrally along a sliding guide attached to the frame and movable platen. A pressure point adjustment device for a horizontal multistage press, characterized in that the stopper is moved forward and backward in the conveying direction in conjunction with this vertical movement.