TWI496640B - Can automatically adjust the sawing speed of the band saw - Google Patents

Description

Band saw machine that automatically adjusts the sawing speed

The invention relates to a band saw machine, in particular to a band saw machine capable of automatically adjusting the sawing speed.

Generally speaking, when the user operates the band saw, the sawing speed of the saw band needs to be adjusted according to the material properties of the workpiece. For example, a soft material (for example, wood) can be sawed at a faster speed, but the texture is better. Hard materials (such as metal) are sawed at a slower speed, which not only avoids the breakage of the saw band, but also allows the saw band to have better sawing efficiency.

The Republic of China Announcement No. M338123 patent uses the frequency converter to adjust the speed of the motor to indirectly adjust the speed of the saw belt, and simultaneously displays the power frequency or speed of the motor through the screen, but the data displayed by the inverter is not the saw with the actual saw. The cutting speed may cause errors in the data interpretation for the user, so it is often impossible to adjust the saw band to the most appropriate speed, which in turn affects the sawing efficiency and service life of the saw band.

The main object of the present invention is to provide a band saw machine capable of automatically adjusting the sawing speed of the saw band to improve the sawing efficiency and service life.

The band saw machine of the present invention comprises a machine table, a motor, a driving wheel, a driven wheel, a saw band, a saw band adjusting seat, a vibration sensor, and a control system. The motor is disposed on the machine and has a drive shaft; the initiative The wheel is rotatably disposed on the machine and coupled to the drive shaft of the motor, and is rotatable by the motor; the driven wheel is rotatably disposed on the machine table and opposite to the drive wheel; the saw band is disposed around the wheel a driving wheel and the driven wheel for cutting a workpiece; the saw belt adjusting seat is disposed between the machine and the driving wheel and the driven wheel, and is pressed against the saw band; the vibration sensor is disposed at the The surface of the saw strap adjustment seat is configured to sense a vibration generated by the saw strap adjustment seat during sawing to send a sensing signal; the control system is electrically connected to the motor and the vibration sensor for receiving the The sensing signal of the vibration sensor is vibrated, and the power output of the driving wheel to the driving wheel is controlled according to the sensing signal.

Thereby, the band saw machine of the present invention can instantly adjust the sawing speed of the saw band to maintain the force required for the saw band to be sawed, so as to effectively improve the sawing efficiency and the service life of the saw band.

10‧‧‧ Band saw

20‧‧‧ machine

22‧‧‧Drive wheel

24‧‧‧driven wheel base

26‧‧‧Long slot

30‧‧‧Motor

32‧‧‧Drive shaft

40‧‧‧Drive wheel

50‧‧‧ driven wheel

52‧‧‧ Slider

60‧‧‧Saw band

70‧‧‧Saw belt adjustment seat

72‧‧‧Vibration sensor

80‧‧‧Control system

90‧‧‧Tensal adjustment device

91‧‧‧ Slider

92‧‧‧Hydraulic cylinder

922‧‧‧Cylinder

924‧‧‧ piston rod

93‧‧‧ oil storage tank

94‧‧ ‧block

95‧‧‧Flexible parts

96‧‧‧ Oil pipeline

Figure 1 is a front view of the present invention.

Figure 2 is a partial rear view of the present invention.

Figure 3 is a block diagram of the present invention.

Please refer to FIG. 1 . The band saw machine 10 of the present invention includes a machine table 20 , a motor 30 , a driving wheel 40 , a driven wheel 50 , a saw band 60 , a second saw band adjusting seat 70 , and two vibration sensing functions . 80, and a control system 90.

The machine table 20 has a driving wheel base 22 and a driven wheel base 24 opposite to the driving wheel base 22. The driven wheel base 24 has a long slot 26 as shown in FIG.

The motor 30 is mounted on the back of the driving wheel base 22 of the machine table 20, As shown in FIG. 2, to provide a power source, in addition, the motor 30 has a drive shaft 32 that extends into the drive wheel housing 22 of the machine table 20.

The driving wheel 40 is disposed in the driving wheel housing 22 of the machine table 20 and is coupled to the driving shaft 32 of the motor 30 such that the driving wheel 40 can be rotated by the driving of the motor 30.

The driven wheel 50 is rotatably disposed in the driven wheel base 24 of the machine table 20 by a rotating shaft 52, and is opposite to the driving wheel 40.

The saw band 60 is wound around the driving wheel 40 and the driven wheel 50 for sawing the workpiece.

Each saw strap adjustment seat 70 is fixed to the machine table 20 and located between the driving wheel 30 and the driven wheel 40, and is pressed against the saw band 60 by its bottom end for adjusting the running track of the saw band 60.

In this embodiment, each of the vibration sensors 72 is an acceleration gauge and is fixed to the surface of the saw blade adjustment seat 70 for sensing the vibration generated by the saw blade adjustment seat 70 during sawing and transmitting a sensing signal. It should be additionally noted that the vibration sensor 72 may be provided with at least one set in conjunction with the saw band adjustment seat 70.

The control system 80 is disposed on the machine 20 and electrically connected to the motor 30 and the two shock sensors 72 for receiving the sensing signals of the vibration sensors 72 to control the rotation speed of the motor 30.

In addition, in order to adjust the saw band 60 to an appropriate degree of tightness, the band saw machine 10 of the present invention further provides a force adjusting device 90. As shown in FIG. 2, the tension adjusting device 90 has a slider 91 and a hydraulic cylinder. 92. An oil storage tank 93, a stopper 94 and an elastic member 95. The hydraulic cylinder 92 has a cylinder 922 and a live The plug rod 924 is fixed to the back surface of the driven wheel base 24 of the machine table 20. One end of the piston rod 924 is disposed in the cylinder block 922, and the other end of the piston rod 924 is pushed against the slider 91 when extended, so that the driven wheel 50 can be moved relative to the driving wheel 40 along the long slot 26 through the slider 91 for supporting or loosening the saw band 60; the oil storage groove 93 is fixed on the back of the machine table 20 for storing hydraulic oil, and by a fuel pipe 96 is connected to the cylinder 922 of the hydraulic cylinder 92 to enable hydraulic oil to be delivered into the cylinder 922 of the hydraulic cylinder 92, forcing the piston rod 924 of the hydraulic cylinder 92 to extend; the stopper 94 is fixed to the back of the machine 20; The member 95 is disposed between the slider 91 and the stopper 94, so that the elastic member 95 can be pushed by the pusher pulley 91 and the driven wheel 50 in the direction of the hydraulic cylinder 72 for facilitating the loosening of the saw band 60.

It can be seen from the above structure that when the driving wheel 40 is driven to rotate by the motor 30, the traction saw belt 60 is synchronously, and then the saw belt 60 pulled by the driving wheel 40 will drive the driven wheel 50 to rotate synchronously, so that the sawing belt 60 will be wound. The driving wheel 40 and the driven wheel 50 are continuously rotated, and the workpiece is stably sawed under the guidance of each of the saw band adjusting seats 70. During the sawing of the workpiece, the saw band 60 transmits different degrees of vibration to each of the saw band adjustment seats 70 according to different workpiece materials. At this time, the vibration sensor 72 senses the saw band adjustment seat 70. The vibration signal sends a sensing signal to the control system 80 respectively. If the vibration level is small, the control system 80 increases the rotation speed of the motor 30, so that the saw belt 60 speeds up the sawing speed. If the vibration level is large, the control system 80 is The speed of the motor 30 is reduced, causing the saw band 60 to slow down the sawing speed. In other words, the control system 80 adjusts the power output of the motor 30 to the drive wheel 40 based on the received sense signal to instantly adjust the sawing speed of the saw band 60 to maintain the force required for sawing.

In summary, the band saw machine 10 of the present invention uses the vibration sensor 72 to instantly monitor the vibration generated by the saw band 60 during sawing, and feeds the sensed value back to the control system 80, so that the control system 80 automatically The power output of the motor 30 to the drive wheel 50 is adjusted, so that the sawing accuracy and service life of the saw band 60 can be improved to achieve the object of the present invention.

10‧‧‧ Band saw

20‧‧‧ machine

22‧‧‧Drive wheel

24‧‧‧driven wheel base

32‧‧‧Drive shaft

40‧‧‧Drive wheel

50‧‧‧ driven wheel

52‧‧‧ shaft

60‧‧‧Saw band

70‧‧‧Saw belt adjustment seat

72‧‧‧Vibration sensor

80‧‧‧Control system

Claims (4)

A band saw machine capable of automatically adjusting a sawing speed, comprising: a machine; a motor disposed on the machine and having a drive shaft; a drive wheel rotatably mounted on the machine and connected to the drive of the motor a shaft, the driving wheel being rotatable by the driving of the motor; a driven wheel rotatably disposed on the machine table and opposite to the driving wheel; a sawing band wound around the driving wheel and the driven wheel; a saw belt adjustment seat is disposed on the machine table and between the driving wheel and the driven wheel, and is pressed against the saw band; at least one vibration sensor is disposed on the surface of the saw band adjusting seat for sensing Measuring a vibration signal generated by the saw blade adjustment seat to send a sensing signal; and a control system electrically connecting the motor and the vibration sensor for receiving the sensing signal of the vibration sensor And controlling the power output of the motor to the driving wheel according to the sensing signal. The band saw machine capable of automatically adjusting the sawing speed according to claim 1, comprising two the saw band adjusting seat and two vibration sensors, wherein the two vibration sensors are respectively disposed on the two saw band adjusting seats. The band saw machine capable of automatically adjusting the sawing speed according to claim 1, wherein the machine has a long groove and is provided with a force adjusting device, the tension adjusting device has a slider, a hydraulic cylinder and an oil reservoir. The slider is slidably disposed in the long slot and connected to the driven wheel. The hydraulic cylinder has a cylinder and a piston rod. The cylinder is fixed to the machine, and one end of the piston rod is disposed on the Cylinder block, The other end of the piston rod is used to push against the slider, and the oil storage tank is connected to the cylinder of the hydraulic cylinder via an oil pipeline. The band saw machine capable of automatically adjusting the sawing speed according to claim 3, wherein the tension adjusting device further has a stopper and an elastic member, the stopper is fixed to the machine, and the elastic member is disposed on the slider And between the stoppers for pushing the driven wheel toward the hydraulic cylinder.