Numerical control spindleless rotary cutting device

Abstract

The invention discloses a numerical control spindleless rotary cutting device. The numerical control spindleless rotary cutting device comprises a machine base, a rotary cutter device, a single rollerdevice, a plate pressure gauge device, a fixed frame, a cutter frame body rotating sleeve, an inclined plane track, a single roller feeding transmission device, a double-roller device and a PLC frequency conversion control system, and is characterized in that the plate pressure gauge device further comprises a pressure gauge frame rotary fan-shaped worm wheel and a worm servo drive device, wherein a pressure gauge rotating shaft is fixedly provided with pressure gauge frame rotary fan-shaped worm wheel, the pressure gauge frame rotary fan-shaped worm wheel is driven by the worm servo drive device, and the worm servo drive device is controlled by the PLC frequency conversion control system. The worm servo drive device is controlled by the PLC frequency conversion control system program todrive the rotation of the pressure gauge frame rotary fan-shaped worm wheel, gap parameter values of a cutter gate between the plate pressure gauge and the cutter edge of the rotary cutter are adjusted immediately on an operation screen of the PLC frequency conversion control system under the condition of no shutdown to automatically adjust the gap of the rotary cutter gate, the rotary cutting quality and working efficiency of a single plate are significantly improved.

Description

technical field [0001] The invention relates to the field of woodworking machinery, in particular to a numerically controlled shaft-free rotary cutting device. Background technique [0002] As we all know, due to the scarcity of forests in recent years, the diameter of logs used for plywood production is relatively small, and many planted trees are also used for plywood production, so the raw materials for plywood production are gradually smaller than the previous production logs. The production of veneer with single card shaft or double card shaft has relatively low production cost and production efficiency, and is not suitable for the current production demand. Based on the above reasons, a CNC non-card shaft rotary cutting machine has been developed and designed. The traditional non-card shaft rotary cutting machine The substantial disadvantages of this structure are: [0003] 1. Since the previous non-card shaft rotary cutting machine has a pressure gauge roller at the ...

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Problems solved by technology

[0002] As we all know, due to the scarcity of forests in recent years, the diameter of logs used for plywood production is relatively small, and many planted trees are also used for plywood production, so the raw materials for plywood production are gradually smaller than the previous production logs. The production of veneer with single card shaft or double card shaft has relatively low production cost and production efficiency, and is not suitable for the current production demand. Based on the above reasons, a CNC non-card shaft rotary cutting machine has been developed and designed. The traditional non-card shaft rotary cutting machine The substantial disadvantages of this structure are:

[0003] 1. Since the previous non-card shaft rotary cutting machine has a pressure gauge roller at the front end of the pressure gauge frame above the blade, the diameter of the pressure gauge roller should be as small as possible according to the principle of wood cutting. However, due to the limitation of the pressure gauge roller strength and bearing size , the diameter of the pressure gauge roller is generally greater than 80mm, so that the single roller is in contact with the outer circle of the log, and there must be a certain board clearance with the back of the knife. The centerline of the single roller of this structure is about 15mm higher than the blade, so that The contact extrusion area between the roller and the log is too high above the blade, so there is no real extrusion on the rotary cut veneer, and the quality of the rotary cut veneer is very poor

[0004] 2. During the rotary cutting process, the diameter of the log gradually decreases, and the radius of curvature gradually decreases. The contact area between the single roller and the log decreases with the diameter, and the contact point gradually becomes higher. The quality of the veneer that is rotary cut is poor, and the surface The finish is low, and the veneer with large thickness is prone to back cracks on the back of the veneer. Moreover, the wood of different tree species is different in hardness and softness after rotary cutting, and the thickness error of the veneer produced is also large. Therefore, so far, no veneer on the market A large part of the veneer cut by the card shaft cannot meet the quality requirements for the production of high-grade plywood, especially when the veneer is cut to a small diameter, the quality of the veneer is even worse

[0005] 3. When the log is rotary cut, because the drive roller drives the motor to rotate at a constant speed, when the wood core is small, the feed speed is fast and the impact force is large, which seriously affects the service life of the single and double rollers.

When working, first manually adjust the gap between the two knife gates of the plate pressure ga

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