JPH09323823A - Square timber re-stacking line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable unmanned work for providing a space between the square timbers at the time of a re-stacking process for the square timber before a drying process by supporting each one end of paired arm rods in such a manner as to freely turn right and left in the horizontal direction, placing plural square timbers on the arm rods, and turning the arm rods in the same direction to separate the plural square timbers from each other at uniform spaces in the short width direction of the square timbers. SOLUTION: Transported square timbers W are aligned and stacked on a swing fork having two arm rods 15a, 15b. The stacked square timbers W are aligned in such a manner that the side surfaces thereof closely adhere to each other. The respective arm rods 15a, 15b of the swing fork are supported in such a manner that each one end is freely turned right and left in the horizontal direction, whereby when the square timbers W are placed on the arm rods, and the arm rods are turned in the same direction and returned, uniform spaces (d) are generated between the side surfaces (the short width direction) of the plural square timbers W stacked on the swing fork. That is, the stacked square timbers W are separated from each other at uniform spaces in the width direction of the square timbers W. Thus, the square timbers can be spaced from each other by unmanned operation before a drying process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a square bar stacking line used for stacking a plurality of square bars as a pre-process of drying lumber processed square bars, and more particularly to an apparatus for restacking the square bars. It is about.

[0002]

2. Description of the Related Art Square lumber after lumbering is shipped after being dried (so-called seasoning) for a certain period of time. Before this drying (seasoning) work, a certain amount of lumber is used between lumbers in order to improve air permeability. It is necessary to stack them while providing the gap. Conventionally, this work was performed manually.

[0003]

The task of reloading a huge amount of timber requires a great deal of labor. The present invention has been made in view of the above problems, and an object of the present invention is to provide a bar re-stacking line capable of unmanning the operation of providing a fixed gap between the bars in the process of re-stacking the bar before the drying process. Is what you do.

[0004]

Therefore, according to the present invention, there is provided a carry-in portion for a piece of rectangular lumber once stacked after lumbering, an inspection portion of the rectangular material provided continuously to the carry-in portion, and a continuous portion to the inspection portion. In the re-stacking line of the square material, comprising a defective product discharge unit and a non-defective product transfer unit, and a re-stacking unloading unit configured to re-stack and unload the square material provided at the end of the non-defective product transfer unit. A transporting means for transporting the timber in the transverse direction to the restacking unit;
It has at least two arm rods for temporarily placing the plurality of square bars transported from the transport means, and one end of the arm rod is rotatably supported in the left and right horizontal direction to place the plurality of square bars. There is provided a bar separating means for rotating the arm rod in the same direction and separating the bar with a uniform gap between the short sides of the plurality of bars.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below based on the embodiments shown in the drawings. FIG. 1 is a plan view showing the overall configuration of a timber stacking line, FIG. 2 is a side view of a loading section, FIG. 3 is a side view of a stacking unloading section, FIG.
FIG. 5 is a plan view showing the operation of the swing fork.

FIG. 1 shows the entire construction of a re-stacking line L for square bars, in which a plurality of square bars W (7 × 7 in this embodiment) which have been sawn and processed by a sawing machine and which have been stacked one by one. A loading section A which is sequentially loaded, an inspection section B which is provided continuously to the loading section and determines the quality of the incoming rectangular lumber W, and a defective product which is provided from the inspection section B to the left in the drawing via the coros kit 10. An unloading unit C and a stacking unloading unit D that stacks and transports the timber through the transfer line 12 in the right direction in the drawing are provided.

As shown in FIGS. 1 to 4, reference numerals 1 and 2 in the loading section A denote supply chain conveyors, and reference numeral 3 denotes an elevating table. The sheet is raised by the lifting table 3 by one step (that is, seven pieces corresponding to one step of stacking), pushed out by the supply pusher 4, and transferred to the inspection conveyor 5 of the inspection section B. Inspection conveyor 5 has work deck 21
, And workers who perform line monitoring and control operations are arranged. At the end of the inspection conveyor 5, a bridge separator 6 is continuously provided.
The bridge separator 6 is tilted downward and sent to a defective product take-out conveyor 9 provided below the bridge chain loader 7, moves on the collos kit 10, and is carried out to the defective product stock kit 11 in the defective product discharge section C. You. The inspected non-defective products are conveyed to the alignment chain kit 8 as they are, and are realigned one by one in the stack. Here, the rearranged square bars W are transported from the alignment chain kit 8 to the end of the transport line 12 by a plurality of live rollers arranged in a ladder shape of the transport line 12 provided over the stacking unloading section D. .

[0008] A chain skit 13 is provided from the end of the transport line 12 to the stacking and unloading section D for transporting the square bar W in the short direction. The two arm rods 15 a and 1, on which the seven square beams W (corresponding to one stage of stacking) conveyed from the chainskit 13 are temporarily placed in the stacking discharge section D.
A swing fork (square material separating means) 15 having 5b is attached. The timber W conveyed by the chain skit 13 is once aligned and loaded on the swing fork 15 by the alignment chain loader 14. At this time, as shown in FIG. 5, the loaded timbers W are aligned with their side surfaces in close contact with each other. Swing fork 1
One end of each of the arm bars 15a and 15b is rotatably supported in the left and right horizontal direction. When the square bar W is placed and the arm bars are rotated in the same direction and returned, the swing fork 15 A uniform gap d is generated between the side surfaces (transverse direction) of the plurality of square bars W loaded on the slab. That is, the loaded square bars W are separated from each other with a uniform gap d in the short direction of the square bars W.

On the center line of the upper surface of each of the arm rods 15a and 15b of the swing fork 15, a ridge 20 is formed along the longitudinal direction thereof, and is formed with the square bar W placed on the arm rods 15a and 15b. By reducing the contact area, the movement of the square bar W is made smooth. As described above, the swing fork 15 rotates in the horizontal direction to generate a uniform gap d between the short sides of the square bar W, moves to a position below the lift-up holder 16, and waits. When the lift-up holder 16 clamps the rectangular bar W on the swing fork 15 in the longitudinal direction and rises and temporarily stops, the swing fork 15 returns to the initial position, and the stacking lifter table 17 rises and lifts up. The holder 16 descends and releases the square bar W on the roller conveyor 18 provided on the upper surface of the stacking lifter table 17. Then, a series of operations are repeated while placing the crosspiece orthogonally on the timber W by hand, and the restacking of the timber W is completed. At that time, the stacking lifter table 17 gradually descends to an appropriate height at which the square bar W is loaded, and when the stacking is completed, the roller conveyor 18 is flush with the free roller conveyor 19 for taking out. Then descend and stop. And the square bar W after the completion of restacking
Is transported in a longitudinal direction on a free roller conveyor 19 for taking out by a roller conveyor 18 on a lifter table 17 for stacking. As described above, a series of work is performed by electrical control by a program driven into the sequencer, and it is possible to flexibly respond to differences in various conditions such as the size of the square bar W and the number of stacked stages by changing the program it can.

[0010]

Since the present invention is constructed as described above,
In the step of re-stacking the timbers before the drying step, the operation of providing a constant gap between the timbers can be unmanned, and there is an excellent effect that the labor of the operator can be reduced.

[0011]

[Brief description of drawings]

FIG. 1 is a plan view showing the overall configuration of a square timber stacking line.

FIG. 2 is a side view of a carry-in section.

FIG. 3 is a side view of the stacking / unloading unit.

FIG. 4 is a front view of a stacking / unloading unit.

FIG. 5 is a plan view showing the operation of the swing fork.

[Explanation of symbols]

 Reference Signs List A Loading section B Inspection section C Defective product discharging section D Stacking discharging section L Square bar re-stacking line W Square bar d Gap 1 Supply chain conveyor 2 Supply chain conveyor 3 Lifting table 4 Supply pusher 5 Inspection conveyor 6 Bridge separator 7 Bridge chain loader Reference Signs List 8 Aligned chain skit 9 Defective product take-out conveyor 10 Koros kit 11 Defective product stock skit 12 Conveyance line (live roller) 13 Chain skit 14 Aligned chain loader 15 Swing fork 15a Arm rod 15b Arm rod 16 Lift up holder 17 Lifter table for stacking 18 Roller Conveyor 19 Free Roller Conveyor for Removal 20 Ridge 21 Work Deck

Claims (1)

[Claims] 1. A carrying-in section for square timbers stacked once after lumbering, an inspection section for square timbers provided continuously to the carrying-in section, and a defective article discharge section and a non-defective article provided continuously to the inspection section. Transport section of
And a restacking and unloading section for restacking and unloading the squares provided at the end of the non-defective product transport section. And at least two arm rods for temporarily placing a plurality of squares conveyed from the transport means, one end of which is rotatably supported in a horizontal direction in the left and right direction. Characterized in that there is provided a timber separating means for placing the timber and rotating the arm rod in the same direction to separate the plurality of timbers with a uniform gap between the short directions of the plurality of timbers. line.