JPS6122902A - Correcting device for cutting at constant speed in veneer lathe - 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 (Objective of the Invention) The present invention provides a method for cutting veneer A by cutting it at a constant cutting speed lq on a veneer rod 7 race equipped with a knife and a nose bar.
7 The veneer is directly connected to the subsequent process at a constant cutting speed (“The discrepancy between the constant cutting speed and the constant unloading speed that occurs during unloading is reduced by cutting the veneer to ensure safety during the unloading process. The device is designed so that the command signal for the constant cutting speed can be manually corrected to increase/decelerate by an appropriate amount during the time from one limit state to the other limit state by observing the tension and slack state of the machine. The purpose of this is to eliminate the decrease in veneer yield and process efficiency caused by breakage or bending of the cut veneer due to the speed difference.

(Structure of the Invention) As shown in an embodiment of the present invention, an appropriate space is provided on the slope 7a of the plane stand 7 that supports the knife 6 of the veneer lace 1 and on the general conveyor 8 provided in connection with the slope 7a. By forming a tensile state of the cut veneer 4 as shown in FIG. 2 or an excessive slack state as shown in FIG. 3 in the space, the process operation for speed correction described later can be It is designed to allow some grace time.

I'm the one who is there. In addition, the veneer race 1 has a spindle 10 that rotates the log 9, a speedometer generator that can measure the number of revolutions, and a variable resistor that can measure the position of the conjugates 7 and 3, a variable transformer, etc., and position indexers. The cutting speed of the raw wood 9 by the veneer lace 1 is estimated by the speed detector 13 combined with the speed detector 12, and the speed detection signal transmitted by the speed detector 13 and the predetermined speed transmitted by the constant speed BB regulator 14 set in advance are calculated. and the speed setting signal of
A control circuit for constant speed cutting is provided, and one of the unloading conveyors 8 is also connected to a motor 1 rotating at a constant speed.
7, the constant cutting speed and constant unloading speed are made to be almost uniform (meaning that the general speed of the unloading conveyor 8 is synchronized with the cutting speed of the veneer race 1), and the cut veneer is cut. The device is designed to continuously carry out 4 to the subsequent process. However, the veneer lace 1
Due to the constant cutting speed of , the constant 1# output speed of the output conveyor 8, etc., a mutual speed difference actually occurs, and the space between the slope 7a of the joint 7 on the knife 6 side and the 1 general output conveyor 8. This results in the formation of a tensile state (see Figure 2) or an excessively slack state (see Figure M4) in the cut veneer 4. It is rare that the voltage remains stable between vfs. Therefore, the present invention provides the above-mentioned slope 7a of the joint 7 on the side of the knife 6 and the general output conveyor 8.
By safely creating a tensile state or an excessively slack state of the cut veneer 4 in the space above, the device is designed to allow a slight grace period for the process operation for C1 speed correction. The speed command signal to be sent from the signal comparator 15 to the variable speed motor 16 is sent to the variable speed motor 16 by an appropriate amount, for example, 50 to 10
For constant speed cutting of about 0 m/min and constant speed unloading speed, an auxiliary IF controller 18 is installed so that an appropriate amount of about 5 to 10 m square can be compensated on the acceleration/deceleration side. It is configured to manually correct deviations in constant speed cutting so that a slight slack state as illustrated in FIG. 1 is always maintained.

(Effects of the Invention) As described above, the present invention provides a space in which the tensile state and slack state caused by the discrepancy between the constant cutting speed and the constant unloading speed of the cut veneer 4 discharged from the veneer lace 1 can be safely formed. Both the slopes 7a and 1 of the joint 7 on the knife 6 side (6 slopes between it and the zero output conveyor 8) are in the tensile state or slack state,
This is a device that corrects overlapping during constant speed cutting by operating the manual correction controller 18 during the grace period to maintain a slight slack state as shown in Fig. 1. This completely eliminates the reduction in veneer yield and process efficiency caused by breakage and bending of the cut veneer 4 due to the cutting speed and constant speed Inventions that can significantly contribute to rationalization are essential.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a side view, FIG. 2 is an explanatory view of the cut veneer in a tensile state, and FIG. 3 is an explanatory view of the cut veneer in an excessively slack state. 2...Nose bar, 3,7...Conjuction, 4...Cutting veneer, 6...Noino, 8...(General purpose conveyor, 1
Q...Spindle, 13...Speed detector, 14...
- Speed setting device, 15... Signal comparator, 16... Speed change L7 data, 18... Manual correction controller. Special Crystal ζ] Applicant: Hashimoto Electric Industry Co., Ltd.
(Method) August 9, 1985 Patent Application No. 73900 2, Title of Invention: Correction device for constant speed cutting in veneer lace 3, Relationship with the person making the correction case Patent applicant address: Takahama City, Aichi Prefecture Yoshihama Town Rusakushinden 1-13
4. Delete the date of the amendment order from line 2 on page 6 to line 11 on the same page.

Claims (1)

[Claims] Leave an appropriate space on the slope of the planer stand on the knife side and the delivery conveyor connected to it to safely create a tensile or slack state of the cut veneer, and cut the raw wood based on the rotation speed of the spindle and the position of the planer stand. A speed detector is provided to detect the speed, and a signal comparator is used to match the speed detection signal transmitted by the speed detector with a predetermined speed setting signal transmitted by the constant speed setting device, and the difference voltage is used to drive the spindle. The veneer race is provided with a control circuit for constant speed cutting to make the cutting speed of the veneer and the conveyance speed of the veneer equal to each other, and the speed command signal of the signal comparator is A correction device for constant speed cutting in veneer lace, characterized in that a manual correction controller for correcting the increase/deceleration by an appropriate amount is provided in the control circuit.