JPH0626501Y2 - Plate-like object positioning mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a positioning mechanism for a plate-like material used for positioning a veneer to be polymerized when manufacturing plywood. .

[Prior Art and its Problems] When manufacturing a plywood made by superposing a plurality of veneers, it is essential to accurately position each veneer to be superposed, but this must be done manually. Doing is extremely inefficient and hinders automation of the plywood manufacturing process. Therefore, various automatic positioning mechanisms have been studied or proposed, but all of them have drawbacks such as requiring complicated equipment or difficulty in working accuracy.

As a positioning mechanism of this kind, for example, a full-scale shokai 60-1
As disclosed in Japanese Patent No. 77139, a pair of upper and lower conveying rollers orthogonal to the conveying direction of the plate-like object, a lateral position regulating member on one side of the conveying area, and a plate-like object toward the lateral position regulating member. There is a configuration in which a pair of position-positioning rollers that are inclined at a predetermined angle with respect to the transport direction in order to skew the sheet and a front stopper plate are provided in front of the transport direction.

However, in the above-mentioned conventional structure, the plate-like object after being slanted by the positioning roller and contacting the lateral position regulating member is driven by the skewing driving force continuously applied by the positioning roller. When a compressive stress is generated between the lateral position regulating member and the positioning roller, especially when the plate-shaped object is thin, the conveyed plate-shaped object is slid and floats up, and not only accurate positioning cannot be performed, but also it is extremely difficult. Had a problem that the plate-like object was damaged.

Further, when the plate-shaped object is sent out after the positioning is completed, the lateral position regulating member in contact with the plate-shaped member acts as a resistance to cause the plate-shaped object to roll and skew, which causes a problem in that the positioning accuracy is deviated. Have

[Object of the Invention] In view of the above circumstances, an object of the present invention is to provide a plate-like object positioning mechanism capable of preventing the plate-like object from rising and accurately positioning it without damaging the plate-like object. To do.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has a transporting means for transporting a plate-like object and a transporting means arranged in front of the transporting means in a direction orthogonal to the transporting direction of the plate-like material. A front position regulating member, a pressing means for preventing the plate-like object conveyed by the conveying means from rising, and a plate-like object positioned in the conveyance direction by the front position-regulating member. A locking member which moves up and down to lock the plate-shaped object and is driven to move in a direction orthogonal to the transport direction of the plate-like object, and a movement of the locking member in a direction orthogonal to the transport direction of the plate-shaped object. Guide member, first driving means for moving the locking member, first driving means stop position detecting means for detecting arrival of the movement stop position of the plate-like object by the first driving means, and 1 After stopping the driving means, move the locking member to the first Second drive means for driving at a lower speed than the first drive means;
The second driving means stop position detecting means for detecting the arrival of the movement stop position of the plate-like object by the driving means.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The positioning mechanism shown in FIGS. 1 to 8 is a veneer positioning mechanism for plywood, and includes a veneer carrying mechanism A, a front end positioning mechanism B for positioning the front end of the veneer in the carrying direction, and veneer carrying. It is composed of a side end positioning mechanism C that positions one side end in the direction.

The transport mechanism A includes a veneer introduction mechanism A1 provided at the front end of the frame 1 in the veneer transport direction and a veneer delivery mechanism A2 provided at the rear end.

The single plate introducing mechanism A1 is configured by disposing a plurality of upper pressing rollers 6 and an L-shaped stopper 9 on the upper part of the rotationally driven introducing roller 4.

A plurality of upper pressing rollers 6 are rotatably supported at the other end of a connecting plate having one end fixed to a shaft rotatably supported by the frame 1 and are arranged in the rotational axis direction (that is, a plurality of in series).
The drive cylinder 7 which is arranged and fixed to the frame 1 reciprocates so as to be swingable in the vertical direction. When driven by the drive cylinder 7 and swung downward, the outer peripheral surface and the outer peripheral surface of the introduction roller 4 form a predetermined distance so that the veneer sandwiched therebetween is driven to be conveyed forward. It is configured.

The L-shaped stopper 9 is arranged at a position between the plurality of upper pressing rollers 6 so as to be connected to a shaft rotatably supported by the frame 1, and is reciprocally moved by a drive cylinder 8 also fixed to the machine frame 1. It can swing vertically. When it is driven by the drive cylinder 8 and swings downward, the front end of the introduction roller 4 falls below the upper surface of the introduction roller 4 (that is, the single plate conveying surface), and the single plate is conveyed. It becomes impossible to prevent the single plate from being introduced into and conveyed to the front end positioning mechanism B which will be described later.

Further, the drive cylinder 7 for oscillating the upper pressing roller 6 and the drive cylinder 8 for oscillating the stopper 9 are configured to interlock with each other, and when the upper pressing roller 6 is oscillating downward. When the stopper 9 is swung downward, that is, when the stopper 9 is swung downward, the upper pressing roller 6 is retracted upward.

Then, the veneers sequentially fed by a veneer feeding mechanism (not shown) (or sequentially inserted by the operator) are temporarily locked by the stopper 9, and the stopper 9 is held at a predetermined timing.
Is retracted and the upper pressing roller 6 is lowered to be introduced into the mechanism.

The single plate feeding mechanism A2, like the single plate feeding mechanism A1,
The cylinder 1 is provided above the feed roller 10 which is rotationally driven.
3 is formed by arranging a plurality of upper pressing rollers 12 which are oscillated and driven by 3, and when the upper pressing roller 12 oscillates downward, the outer peripheral surface of the upper pressing roller 12 and the outer peripheral surface of the sending roller 10 are set to a predetermined level. The veneer is configured so as to send out and drive the veneer sandwiched between the vacancies.

A front end positioning mechanism B and a side end positioning mechanism C are arranged between the veneer introducing mechanism A1 and the veneer feeding mechanism A2.

The front end positioning mechanism B includes three lower conveyance rollers 21 and 22, which are arranged at predetermined intervals in parallel with the introduction roller 4 and the delivery roller 10 of the single plate introduction mechanism A1 and the single plate delivery mechanism A2. 23 and upper transport rollers 24 and 25 above and below the lower transport rollers 21 and 23 in front of and behind them, respectively, and in front of the single plate transport by the introduction roller 4 and the delivery roller 10 in a direction orthogonal to the transport direction. A front end position stopper 26, which is a front end position regulating member, is arranged.

The respective rollers (lower carrying rollers 21, 22, 23 and upper carrying rollers 24, 25) are linked by a motor 2 which is a driving means for rotationally driving these and a belt 3, and each of the rollers 2 is driven in a predetermined direction (single plate It is driven to rotate in the carrying direction).

Outer peripheral surfaces of the lower conveying rollers 21 and 23 and the upper conveying roller 2
The interval between the outer peripheral surface of 4 and 25 is such that the veneer is sandwiched between them, and the veneer sandwiched between these is driven to be driven toward the front end position stopper 26. .

The front end position stopper 26 is rotatably supported by the frame 1 and fixed to a shaft installed in a direction orthogonal to the veneer conveying direction, and the shaft is rotatably driven by a driving means (not shown) to swing. After that, it is evacuated from the single plate transport area. The swinging movement of the front end position stopper 26 is performed by the cylinder 13 when the idle roller 12 is rotated.
It is synchronized with the swing drive of the
Is swinging and retreating from the single plate transport area, and at the same time, the idle roller 12 swings downward to transport the single plate.

Then, the lower conveyance rollers 21 and 23 and the upper conveyance roller 2
The veneer that is driven by being sandwiched between 4 and 25
The front end abuts on the front end position stopper 26, and when the conveyance drive is continued, the left and right front ends evenly abut on the front end position stopper 26 to position the front end.

Among the rollers of the front end positioning mechanism B, the side positioning mechanism C is installed above the central lower transport roller 22.

The side edge positioning mechanism C locks the veneer whose front edge is positioned by the front edge positioning mechanism B with the saw teeth 31 as a locking member so that the side edge is positioned at a predetermined position in the direction orthogonal to the veneer transport direction. It is to move until.

As shown in FIGS. 6 to 7, two elevating brackets 36 are fixed to the frame angle 1 provided above the lower conveying roller 22 in parallel with the lower conveying roller 22 with a predetermined space therebetween, and the elevating bracket 36 is fixed. An elevating cylinder 37 is installed facing downward on the upper part of the.

An elevating shaft 35 is vertically movably fitted to each elevating bracket 36, and an upper end of the elevating shaft 35 is connected to a spindle of an elevating cylinder 37 via a connecting collar 38.

As shown in FIG. 8, the connecting collar 38 has a large diameter space 38a in which the large diameter portion 35a at the upper end of the elevating shaft 35 can move up and down by a predetermined amount, and the lower side of the large diameter space 38a has a smaller diameter than this. Is opened in the opening 38b.
The lifting shaft 35 except the large diameter portion 35a is slidably fitted therein. That is, the large-diameter portion 35a at the upper end of the elevating shaft 35 is fitted in the large-diameter space 38a so as to be vertically movable by a predetermined stroke, and the elevating shaft 35 is slidably fitted in the small-diameter opening 38b, so that the connecting collar 38 is formed. The elevating shaft 35 and the elevating shaft 35 are connected such that they can move relative to each other by a predetermined amount and cannot be separated.

A guide rail 34 in which a dovetail groove, which is a guide groove, is formed at the lower end of the lifting shaft 35 is fixed to the two lifting shafts 35 with the dovetail groove side facing downward, and the holder 33 is slidable in the dovetail groove. Is fitted to.

The holder 33 has an inverted U-shaped cross-sectional shape with a slit formed in the center, and the sawteeth 31 inserted downward in the slit are mounted by a set screw.

Further, the spindle of the lateral low speed moving cylinder 42, one end of which is swingably connected to a predetermined position of the holder 33, and the one end of the spindle of the lateral high speed moving cylinder 41, which is swingably connected to the frame angle 1. Are connected in series,
Lateral high speed moving cylinder 41 and lateral low speed moving cylinder 4
2 is driven so that the holder 33 moves the guide rail 34
It is designed to be moved along.

A veneer holder 27 is arranged on the veneer carrying-in side of the saw teeth 31 arranged in this way.

The veneer presser 27 is a sled type plate whose bending-up side is bent upward at a predetermined angle, and is arranged in parallel with the sawteeth 31 and the lower conveyance roller 22 by a predetermined distance and is conveyed and positioned. This is to prevent the single plate from rising.

At the position where the side edge of the saw blade 31 on the side is positioned, a position sensor 51 as a position restricting means is fixed to the frame angle 1 below the veneer conveying path, and a predetermined amount is further centered from the position sensor 51. The pre-detection sensor 5252 is similarly fixed to the frame angle 1 and arranged. The positioning sensor 51 and the pre-detection sensor 52 may be of any type as long as they can detect a single plate, but in the present embodiment, the presence of an object is detected by detecting the reflected light of the irradiated light beam. A so-called optical sensor for detecting is used.

Thus, the side end positioning mechanism C configured as described above operates in the following manner to perform lateral positioning.

That is, the raising / lowering cylinder 37 is driven to lower the sawteeth 31, and the sawteeth 31 are brought into contact with the surface of the single plate on which the front end is positioned by the front end positioning mechanism B to be locked.

At this time, due to the stroke of the lifting cylinder 37, the saw teeth 31
If the plate is pressed downward (to the veneer), the saw teeth 31 will bite into the veneer and damage it, or it will become impossible to remove it. In this configuration, the saw teeth 31 descend due to the descending stroke of the elevating cylinder 37, but even after the elevating cylinder 37 continues the descending stroke after the saw teeth 31 contact the surface of the veneer plate, the elevating shaft in the connecting collar 38. Within the stroke range of 35, the lifting shaft 35 (that is, the sawtooth 31)
In this state, the lifting cylinder 3 is not driven downward.
By stopping the driving of the saw tooth 31, the saw tooth 31 becomes the weight of the saw tooth 31, the holder 33, the slide guide, and the lifting shaft 3.
Just press the veneer with the weight of 5 (in other words, saw blade 3
1. Holder 33, slide guide and lifting shaft 35
The sawteeth 31 do not bite into the veneer (when the veneer rests on the veneer).

Then, the veneer with the front end positioned is moved to the side to be positioned at a high speed by driving the lateral high speed moving cylinder 41, and the side end of the veneer is detected by the pre-detection sensor 52. The driving of the lateral high-speed moving cylinder 41 is stopped, and the lateral low-speed moving cylinder 42 is driven to drive the single plate laterally at a low speed and stop when detected by the positioning sensor 51. With such a configuration, the movement of the veneer for lateral positioning can be made as fast as possible, and since the veneer is moved at a low speed when the positioning is stopped, the positioning accuracy may be deteriorated due to the inertia of the veneer. It can be prevented. Further, since the side end position is detected by the position detecting sensor 51 and the movement is stopped, unlike the case where it is brought into contact with a ruler or an endless belt, the side end of the veneer is not damaged. Is.

Even when the side end position is set, the rollers (the lower transfer rollers 21, 22, 23 and the upper transfer rollers 24, 25) of the front end position setting mechanism B are rotationally driven, and the front end position is continuously determined. There is something.

In this way, the veneer whose front end and side end have been positioned is sent to the upper pressing roller 12 by a signal from a post process (not shown).
Is oscillated downward and pressed by the delivery roller 10, and the front end position stopper 26 swings and retreats from the transfer area, so that the front end and side ends are conveyed and driven. Are sent out.

[Effect of the Invention] As described above, according to the present invention, the plate-shaped object, the front end of which is positioned by the conveying biasing force of the conveying roller toward the stopper member, is pressed by the pressing means, and the locking member is used. Since the locking member is locked and the locking member is moved laterally in the conveying direction to position the side end, reliable and highly accurate positioning can be performed, and the end on the positioning side is damaged. There is no such thing.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a plate-like object positioning mechanism according to the present invention, FIG. 2 is a top view of FIG. 1, FIG. 3 is a front view of FIG. 1, and FIG. FIG. 6A is a view showing a drive mechanism of a locking member in the same embodiment, FIG. 5A is a front view, FIG. 5B is a side view, and FIG. ) Is a front view, (B) is a side view, FIG. 6 is a partially enlarged view of FIG. 4 (B), and FIG. 7 is a partially enlarged view of the drive mechanism of the sharpened member shown in FIG. 4 (A). ) Is a front view,
(B) is a side view, and FIG. 8 is a longitudinal sectional view of FIG. 6. A: Conveying mechanism A1: Single plate introducing mechanism A2: Single plate feeding mechanism B: Front edge positioning mechanism C: Side edge positioning mechanism 21, 22, 23 ...... Lower transportation rollers 24, 25 Upper transport roller 26 ... Front end position stopper (front position regulating member) 31 ... Sawtooth (locking member) 51 ... Position sensor (side end detection means)

Claims (1)

[Scope of utility model registration request] 1. A transport means for transporting a plate-like object, a front position regulating member arranged in front of the transport means in the transport direction so as to be orthogonal to the transport direction of the plate-like object, and a plate transported by the transport means. Pressing means for preventing floating of the plate-like object, and up and down with respect to the plate-like object positioned in the transport direction of the plate-like object by the front position restricting member, and at the same time the plate-like object A locking member that is driven to move in a direction orthogonal to the transport direction, a guide member that guides the movement of the locking member in a direction orthogonal to the transport direction, and a locking member for moving the locking member. A first driving means, a first driving means stop position detecting means for detecting arrival of a movement stop position of the plate-like object by the first driving means, and after stopping the first driving means, the locking member No. 1 for driving at a lower speed than the first driving means A plate-like object positioning mechanism comprising: two driving means; and a second driving means stop position detecting means for detecting arrival of the movement stop position of the plate-like object by the second driving means.