JPH0377762B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a process for placing plate bodies to be processed, such as plywood, decorative boards, or veneer veneers, between the hot plates of a horizontal multistage press, which are arranged side by side at equal intervals when the press is opened. This invention relates to a supply device for processing plates that are carried in all at once.

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 the hot plates, the movable platen is raised, and the hot plate above it is successively pushed up, starting with the lowest hot plate, the press is closed, and the press is heated and pressurized for the required time. A processed plate was obtained.

However, in this type of multi-stage press having multiple upper and lower heating plates, in order to support each stage of the heating plates, support claws are attached to the four corners, and these support claws are attached to the supports in the form of a ladder step. A method is adopted in which the components are placed one after another on a support.

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, also consider the strength that corresponds to the deflection and bending caused by the distance between the supporting points. In order to provide rigidity, the thickness is greater than necessary. 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 treated plate, but also the diameter of the ram cylinder, which is the means to raise and lower the hot plate 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 multi-stage press to become larger.

For this reason, by adopting a horizontal multi-stage press in which hot plates are arranged side by side in contrast to a multi-stage press in which multiple hot plates are arranged above and below, it is possible to apply heat to the processed plate after heating and pressing. Attempts have been made to correct pressure variations, reduce the weight of the hot plate, or downsize the fluid pressure unit, etc., but at present, when the press is opened, the pressure between the hot plates, which are parallel to each other at equal intervals, is Since no suitable device has been developed for transporting the plates to be processed all at once, it has not been possible to effectively utilize the horizontal multi-stage press.

In view of the above, the present invention has been developed in which the lower ends of the loader shelves, which are spaced at equal intervals, are supported by a certain distance in the press closing direction from the center of gravity of the loader machine frame installed on the loading side of a horizontal multi-stage press. In addition, a lever is attached to this supporting position so as to protrude from the lower end of the loader shelf so that the loader shelf can be raised freely, and a pawl that is movably disposed in the engagement position of the lever is moved forward to engage with the lever. When the loader shelf is in a tilted state, the plates to be processed are sequentially inserted while expanding the interval between the loader shelves in the tilted state, and the loader shelf is erected. The configuration will be explained first.

Left frame 2 and right frame 3 via upper cross beam 1
are arranged oppositely on the left and right, and a movable platen 6 is made reciprocally movable by a ram 5 of a cylinder 4 using fluid pressure provided on the right frame 3, and between the left frame 2 and the movable platen 6, A plurality of heat plates 8 are movably suspended via support rollers 7, forming a horizontal multi-stage press 9.

On the loading side of the plate 10 to be processed of the horizontal multistage press 9, fixed legs 11 are erected at the four corners, and a loader frame 12 is constructed parallel to the press opening/closing direction. , loader shelves 13 having a number of stages and a left-right spacing corresponding to the hot plates 8 that are arranged side by side when the press is opened are supported at each lower end by a certain distance L from the center of gravity X in the press closing direction. Then, the lever 14 is tilted in the press opening direction from this support position Y and is mounted so as to protrude. That is, in the loader shelf 13 shown in FIG. 2, the lower end thereof is once bent to the left, which is the press closing direction, and supported on the machine frame 12, so that the support position Y and the center of gravity position X of the loader shelf 13 are will be shifted by a certain interval L. Further, since the lower end portion of the loader shelf 13 shown in FIG. 4 is supported in the press closing direction with its center line as a boundary, the same effect as that in FIG. 2 can be obtained.

Further, in order to maintain a constant left-right distance between adjacent loader shelves 13, the loader shelf 13 is provided with a regulating body such as a spacer or a roller at a position that does not serve as a support when inserting or placing the plate to be processed 10. wear it. In this embodiment, a regulating roller 15 having the same diameter as the left-right spacing of the hot plate 8 is pivotally supported at the upper end of the loader shelf 13.

Next, the tips of the pair of support frames 16 pivotally attached to the left end of the loader machine frame 12 are pivoted to the loader shelf 13 located at the frontmost part to hold it in a substantially vertical state, and the right ends, that is, In order to push up the loader shelf 13 located at the rearmost part almost vertically, a lifting fluid cylinder 17 is pivotally attached to the right end of the loader machine frame 12, and the tip of the piston rod 18 is pivotally supported to the loader shelf 13 at the rearmost part. Furthermore, the loader machine frame 1
2 is provided with a conveyor 20 having the same height as the conveyor 19 disposed in the horizontal multi-stage press 9 and having a plurality of belts or rolls as shown arranged at arbitrary intervals.

At the lower part of the fixed leg 11, there is a claw that engages with the lever 14 and rotates the lever 14 counterclockwise in FIG. 21 so that it can run freely. That is, in order to impart running action to the pawl 21, rack and pinion movement, fluid pressure drive, or chain drive by a motor is employed.
In this embodiment, the outer ends of the fixed legs 11 each support a chain wheel 22, and the chain wheels 22 located on the left and right
A claw 21 is attached to a chain 23 suspended between the two. The shape of the pawl 21 may be rectangular, but if the engaging surface is formed with an upward slope as shown in the figure, the engagement with the lever 14 will be smooth, and the pawl 21 will be engaged with the loader shelf 13. The impact will also be alleviated.

A pair of supports 24 and 24' are erected on the side of the loader frame 12 where the plate 10 to be processed is inserted.
4 and 24', with beams arranged vertically at a certain interval to form rails 25, 25', and these rails 25, 2
A pedestal 27 having wheels 26 mounted on the 5' is formed into a U-shape and mounted. This frame 27 is connected to the rail 2
5, 25', a chain drive by a motor, a rack and pinion drive, or a hydraulic drive as shown in the figure is provided. That is, the rear end of the pedestal fluid cylinder 28 is pivotally supported on the support column 24', and the tip of its piston rod 29 is pivotally supported on the lower end of the pedestal 27, so that the pedestal 27 can move forward and backward with respect to the loader machine frame 12.

Further, a pair of chute 31 whose front end is free and whose rear end is elastically locked by a spring 30 is installed at the lower tip of the pedestal 27 slightly above the surface of the conveyor 20. ing.

On the other hand, the upper part of the pedestal 27 and the support column 2
a plurality of pulleys 32 fixedly arranged at 5';
A plurality of belts 35 are suspended between movable pulleys 34 whose tips are applied with a predetermined pressure by fluid pressure or, as shown in the figure, by a balance weight 33. A lower insertion conveyor 36 having an insertion surface shaped like the above is constructed, and is expandable and retractable as the pedestal 27 moves forward and backward, and is provided opposite to the lower insertion conveyor 36 to prevent the plate 10 to be processed from floating when it is inserted. In order to do this, the upper insertion conveyor 37 is disposed above the pedestal 27.

In the figure, numeral 38 is a lifting platform on which a pile of plates 10 to be processed is placed, and numeral 39 is a pinch roll.

Next, the action will be explained.

First, while heating and pressurizing the plate 10 to be processed, which was previously supplied to the horizontal multi-stage press 9, the chain 23 is moved forward or backward, and the claw 21 and lever 14 are
At the same time, the lifting fluid cylinder 17 is actuated to contract the piston rod 18. Since the center of gravity X of each loader shelf 13 except for the loader shelf 13 at the front end is shifted from the support position Y by a certain distance L, the loader shelves 13 rotate clockwise in FIG. 2 with the support position Y as a fulcrum. move and lie down on an incline.

Next, the frontmost loader shelf 13 which is almost in an upright state
Then, in order to insert the plate 10 to be processed between the loader shelves 13 of the next stage which are in a collapsed state, the pedestal fluid cylinder 28 is operated, and the pedestal 27 is moved along the rails 25 and 25' so that the chute 31 is at the frontmost position and the chute 31 is at the front end. It is moved to the forward limit position between the loader shelves 13 of the stages. At this time, the lower insertion conveyor 36 is extended and the movable pulley 34 is located approximately at its upper limit.

Under this situation, the plate 10 to be processed is moved from the lifting table 38 manually or by a known feeding mechanism.
It is fed out between the pinch rolls 39 and inserted between the loader shelves 13 along the curved slope of the lower insertion conveyor 36 and while being prevented from floating by the upper insertion conveyor 37. At the time of insertion, the lower end of the plate 10 to be processed is elastically supported by the pair of chute 31, so that the impact when it falls is alleviated.

After inserting the first plate 10 to be processed, the chain 23 is moved forward intermittently and the claw 21 is moved slightly to the right in the second figure. By engaging with the upward slope surface, it rises slightly from the collapsed state, the distance from the third stage loader shelf 13 is expanded, and in synchronization with this,
Due to the operation of the pedestal fluid cylinder 28, the pedestal 28
is intermittently retracted from each stage, and the chute 31 is moved to the left in the second diagram to reach between the loader shelves 13 of the next and third stages, so that the next plate 10 to be processed can be inserted.

As mentioned above, the forward movement of the chain 23 and the frame 27
synchronize the backward movements of the , and each time these are operated intermittently, insert the plate 10 to be processed between the loader shelves 13 of each stage, and while raising the loader shelf 13, insert the plate 10 to be processed from above the chute 31. The body 10 is transferred onto a conveyor 20 and placed thereon.

Then, when the loader shelves 13 of the next stage, third stage, etc. are brought to the upright state one after another, the regulating rollers 15 control the horizontal spacing between the loader shelves 13 of each stage and the spacing between the hot plates 8 when the press is opened. become the same. Also, at this time, the loader shelf 1 with the lever 14 and the claw 21 disengaged
3 is subjected to a backward tilting moment, but since the lever 14 of the adjacent rear loader shelf 13 still engages the pawl 21, the regulating roller 15
This forces the vehicle forward through the force, canceling out that moment.

In this way, the plates 10 to be processed are sequentially inserted between the loader shelves 13 at each stage, the claws 21 move forward to the lower position of the rearmost loader shelf 13, and the mount 27
When the forward movement limit is reached, that is, when the loader shelves 13 of each stage are fully loaded with the plates 10 to be processed, the pushing-up fluid cylinder 17 is operated and the piston rod 18 is activated.
When extended, the rearmost loader shelf 13 also stands up, and the phases of the plurality of stages of hot plates 8 and the loader shelves 13 of each stage when the press is opened become the same.

Next, the conveyor 20 is driven to transport the plates 10 to be processed between the loader shelves 13 to the spaces between the hot plates 8 of each stage at the same time. Thereafter, the chain 23 is moved forward or backward to keep the claw 21 at a predetermined position in preparation for the next insertion operation.

In this embodiment, the loader shelf 13 located at the rearmost position is erected by the push-up fluid cylinder 17, but instead of this push-up fluid cylinder 17, the loader shelf 13 located at the rearmost position is raised. A lever 14 is attached protrudingly to the lever 14 and the claw 21.
It is also possible to make it stand up by engaging with it. In addition, if the intervals between the loader shelves 13 of each stage are close and the levers 14 cannot be mounted in a protruding position due to strength reasons, the levers 14 may be positioned in a staggered manner with respect to the adjacent loader shelves 13. Further, the claws 21 are each attached to a pair of chains 23 suspended from the outer ends of the fixed legs 11, and the levers 1 are attached to protrude from both sides of the loader shelf 13.
Although it is engaged with 4, let this be one of them,
In some cases, the other is simply used as a support point.

As described above, the device of the present invention can accommodate hot plates that are installed side by side when the press is opened, on the loader machine frame that is installed upright on the loading side of a horizontal multi-stage press that can freely open and close multiple hot plates in the horizontal direction. A loader shelf having a number of stages and a left-right spacing is supported by a certain distance from its center of gravity in the press closing direction, and a lever is attached to this supporting position protruding from the lower end of the loader shelf to raise and lower the loader shelf. At the same time, a regulating body is attached to maintain the spacing, and a pawl is arranged at the engagement position of the lever so that it can move freely, and a lower end of the plate to be processed is supported between the loader machine frames. However, since a conveyor is arranged between the hot plates arranged side by side, when the claw is moved forward and engaged with the lever, the loader shelf is expanded and the loader shelf is expanded. The plates to be processed can be inserted smoothly, and the loader shelves after insertion stand up with a constant spacing between adjacent ones, so that when fully loaded with plates to be processed, the loader shelves at each stage are in the same phase as the hot plates arranged side by side. Therefore, the conveyor can carry in all the plates to be processed at the same time.Furthermore, if the pressing force against the last loader shelf is released, all the loader shelves can collapse backward at the same time, and the next This allows the insertion work to be handled quickly.

In addition, when inserting the plate to be processed, a pedestal is placed so that it can move forward and backward with respect to the loader machine frame, and a chute is resiliently installed below this pedestal, and the chute is placed upward on the slope of the loader shelf when it is collapsed. By arranging a pair of upper and lower telescopic insertion conveyors each having a contoured insertion surface, the insertion work can be automated and work efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the device of the present invention;
FIG. 2 is a side view of the same, FIG. 3 is a front view of the same, and FIG. 4 is a partially cutaway enlarged side view showing another embodiment of the loader shelf. 8...Hot plate, 9...Horizontal multistage press, 10...
Plate to be processed, 12...Loader machine frame, 13...Loader shelf, 14...Lever, 15...Regulation roller, 20
...Conveyor, 21...Claw, 27... Frame,
31...Chute, 36...Lower insertion conveyor,
37... Upper insertion conveyor, X... Center of gravity position, Y
...Supporting position, L...a certain interval.

Claims (1)

[Scope of Claims] 1. A loader machine frame erected on the loading side of a horizontal multistage press has a lower end of a loader shelf having a number of stages and a horizontal spacing corresponding to the hot plates that are arranged in parallel when the press is opened, and whose center of gravity is The loader shelf is supported at a certain distance in the press closing direction, and a lever is attached to this support position so as to protrude from the lower end of the loader shelf to freely raise the loader shelf. A regulating body is attached to hold the plate at a constant level, and a claw is movably disposed at the engagement position of the lever, and a conveyor is provided to support the plate to be processed and transport it between the hot plates arranged in parallel. , A device for supplying a plate to be processed to a horizontal multi-stage press, characterized in that it is disposed between the frames of the loader machine. 2. On the loader frame erected on the loading side of the horizontal multi-stage press, the lower end of the loader shelf, which has the number of stages and the horizontal spacing corresponding to the hot plates that are arranged side by side when the press is opened, is located from its center of gravity toward the press closing direction. The loader shelves are supported at different intervals, and at this supporting position, a lever is attached to protrude from the lower end of the loader shelf so that the loader shelf can be raised and lowered freely, and furthermore, the loader shelf is provided with a regulating body that maintains a constant interval between adjacent loader shelves. A conveyor is mounted between the loader machine frames, and a claw is movably disposed at the engagement position of the lever, and a conveyor that supports the plate to be processed and conveys it between the hot plates arranged in parallel is installed between the frames of the loader machine. furthermore, a chute for receiving the plate to be processed is elastically installed slightly above the transport conveyor surface on a pedestal that can move forward and backward with respect to the loader machine frame, and is supported above the pedestal;
A device for supplying plates to be processed to a horizontal multi-stage press, characterized in that a pair of upper and lower telescopic insertion conveyors are provided, each having an insertion surface that follows the slope of a loader shelf when it is collapsed.