TWM539414U - Band load detection structure of band saws - Google Patents

Description

Band saw machine load detection structure

The present invention relates to a band saw machine, and more particularly to a saw band load detecting structure of a band saw machine.

Band saws are widely used in cutting operations in the industry. However, the material of the workpiece to be cut is different, so the form and cutting speed of the saw band of the band saw machine must be changed according to the material of the workpiece to be cut. In general, the cutting work can be performed at a higher cutting speed for the workpiece to be cut with lower hardness; the cutting work must be performed at a lower cutting speed for the workpiece to be cut with higher hardness.

Another problem that has arisen is that when the workpiece is inhomogeneous, the cutting operation at the same cutting speed adversely affects the cutting operation, which is particularly noticeable when cutting large workpieces. Therefore, a preferred working condition is to change the cutting speed in accordance with the material of the current workpiece to be cut.

Taiwan Invention Patent No. I496639 "Bearing Machine with Automatic Adjustment of Cutting Speed" provides a band saw machine that automatically adjusts the cutting speed according to the current cutting state. The invention is characterized in that a force pressure sensor is provided. When the material of the workpiece to be cut changes, the load on the saw belt changes, the pressure sensor detects the change and changes the rotation speed of the motor. Improve the quality and efficiency of cutting operations.

However, the position of the force and pressure sensor is at the drive shaft of the motor and/or On the rotating shaft of the driven wheel, these positions are the rear end position of the force transmitted by the saw belt. In addition to detecting the change of the sawing load, the accuracy of the detected change is also due to the middle. The effect is reduced by the influence of the transmission of many components.

The present invention relates to a saw band load detecting structure of a band saw machine, which can improve the accuracy of detecting the load change of the saw band, and change the driving speed of the motor according to the detection result to improve the quality and efficiency of the cutting operation. .

In order to achieve the above purpose and effect, the saw band load detecting structure of the band saw machine provided by the present invention comprises: a machine table, which is provided with a controller, a driving wheel, a driven wheel, a saw band, and a winding Provided on the driving wheel and the driven wheel, and a motor driving the driving wheel to rotate, thereby driving the saw band; a pressure sensor is disposed on the machine, the pressure sensor has a sensing end, directly The saw band is contacted to detect the pressure of the saw band and the detection result is transmitted to the controller.

In an embodiment, the machine includes a base and a saw frame, and the pressure sensor is disposed on the saw frame.

In an embodiment, a fixing base is further connected to the machine, wherein the pressure sensor is disposed on the fixing base.

In an embodiment, the saw band has an active section, two contact sections, and a connecting section; the active section is located between the driving wheel and the driven wheel, and is a section contacting the workpiece to be cut; The two contact segments are respectively connected to the two contact segments, and the two contact segments are respectively a segment of the saw band that is in contact with the driving wheel and the driven wheel; and two ends of the connecting segment are respectively connected to the two contact segments, and the driving wheel is located at the driving wheel Between the driven wheel and the driven section, the connecting section is located on the opposite side of the active section; the pressure The sensing end of the sensor directly contacts the active segment of the saw band or the connecting segment or the contact segment.

In one embodiment, one end edge of the saw band has serrations, and the sensing end of the pressure sensor directly contacts the saw band at the other end of the serrations.

Thereby, the pressure sensor can detect the load on the saw belt during cutting, and accordingly change the rotation speed of the saw belt to make the cutting work have better quality and efficiency.

10‧‧‧ machine

12‧‧‧Base

14‧‧‧Saw frame

16‧‧‧ Controller

18‧‧‧Drive wheel

20‧‧‧ driven wheel

22‧‧‧Saw band

24‧‧‧ drive shaft

26‧‧‧Action section

28‧‧‧Contact section

30‧‧‧Connection section

32‧‧‧ fixed seat

34‧‧‧ Pressure Sensor

36‧‧‧Sense end

38‧‧‧Sawtooth

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a band saw machine in accordance with a preferred embodiment of the present invention.

Figure 2 is a schematic view of a saw band and a pressure sensor of a preferred embodiment of the present invention.

A band saw machine according to a preferred embodiment of the present invention includes: a machine table 10 including a base 12 and a saw frame 14. A controller 16 is disposed on the base 12. A driving wheel 18 and a driven wheel 20 are pivotally mounted on the saw frame 14. A saw band 22 is wound around the drive wheel 18 and the driven wheel 20. A motor (not shown) is coupled to the drive wheel 18 for driving the drive wheel 18 to rotate, thereby driving the saw band 22.

The saw band 22 has an active section 26, two contact sections 28, and a connecting section 30. The action section 26 is located between the drive wheel 18 and the driven wheel 20 as a section in contact with the workpiece to be cut; the two ends of the action section 26 are respectively connected to the two contact sections 28, and the two contact sections 28 are the saw The belt 22 is respectively connected to the driving wheel 18 and the driven wheel 20; and the two ends of the connecting portion 30 are respectively connected to the two contact segments 28 between the driving wheel 18 and the driven wheel 20, the connecting portion 30 is located on the opposite side of the active section 26 and is not in contact with the workpiece to be cut.

It should be particularly noted here that the saw band 22 is continuously rotated during operation. Dynamic state. The aforementioned action section 26, contact section 28, and connecting section 30 do not refer to the fixed portion of the saw band 22, but rather to the section of the defined position when the saw band 22 is in operation.

Referring to FIG. 2, a fixing seat 32 is disposed at a predetermined position on the saw frame 14. The outer end of the fixing base 32 is provided with a pressure sensor 34, and the sensing end 36 of the pressure sensor 34 directly contacts the same. The action section 26 of the saw band 22 transmits the detected pressure signal to the controller 16. One end edge of the saw band 22 has serrations 38, and the sensing end 36 of the pressure sensor 34 directly contacts the saw band 22 at the other end of the serrations 38.

When the band saw machine of the present invention cuts a workpiece, the action section 26 of the saw band 22 contacts the workpiece, and the saw band 22 is deformed, and the deformation generates a predetermined pressure on the pressure sensor 34, and For its detection. The harder the workpiece, the greater the amount of deformation of the saw band 22, and the greater the pressure value detected by the pressure sensor 34. Thereby, the controller 16 can control the running speed of the motor according to the magnitude of the sensing signal transmitted by the pressure sensor 34 to improve the quality and efficiency of the cutting operation.

In an embodiment, the pressure sensor 34 is not directly disposed on the saw frame 14 through the fixing base 32. In another embodiment, the sensing end 36 of the pressure sensor 34 contacts the contact segment 28 or the connecting segment 30.

The above is a preferred embodiment and a design of the present invention, but the preferred embodiments and the design drawings are merely illustrative and are not intended to limit the scope of the present invention. The scope of the rights covered by the contents of the "Scope of Application for Patent Application" is not within the scope of this creation and is the scope of the applicant's rights.

10‧‧‧ machine

12‧‧‧Base

14‧‧‧Saw frame

16‧‧‧ Controller

18‧‧‧Drive wheel

20‧‧‧ driven wheel

22‧‧‧Saw band

24‧‧‧ drive shaft

26‧‧‧Action section

28‧‧‧Contact section

30‧‧‧Connection section

34‧‧‧ Pressure Sensor

Claims (7)

A saw band load detecting structure for a band saw machine, comprising: a machine having a controller, a driving wheel, a driven wheel and a saw band disposed around the driving wheel and the driven wheel, and a motor driving the driving wheel to rotate, thereby driving the saw band; wherein: a pressure sensor is disposed on the machine, the pressure sensor has a sensing end, and directly contacts the saw band for detecting The pressure of the saw band is measured and the detection result is transmitted to the controller. The saw band load detecting structure of the band saw machine according to claim 1, wherein the machine base comprises a base and a saw frame, and the pressure sensor is disposed on the saw frame. The saw band load detecting structure of the band saw machine according to claim 1, further comprising a fixing base connected to the machine base, wherein the pressure sensor is disposed on the fixing base. The saw band load detecting structure of the band saw machine according to claim 1, wherein the saw band has an active section, two contact sections, and a connecting section; the active section is located at the driving wheel and the driven wheel a section contacting the workpiece to be cut; the two ends of the action section are respectively connected to the two contact sections, and the two contact sections are sections respectively contacting the sawing belt with the driving wheel and the driven wheel; The two ends of the connecting section are respectively connected between the driving wheel and the driven wheel, and the connecting section is located on the opposite side of the active section; the sensing end of the pressure sensor directly contacts the function of the sawing strip segment. The saw band load detecting structure of the band saw machine according to claim 1, wherein the saw band has an active section, two contact sections, and a connecting section; the active section is located at the driving wheel and the driven wheel a section contacting the workpiece to be cut; the two ends of the active section are respectively connected to the two contact sections, and the two contact sections are sections of the sawing strip respectively contacting the driving wheel and the driven wheel; The two ends of the connecting section are respectively connected between the driving wheel and the driven wheel, and the connecting section is located on the opposite side of the active section; the sensing end of the pressure sensor directly contacts the sawing strip Connection segment. The saw band load detecting structure of the band saw machine according to claim 1, wherein the saw band has an active section, two contact sections, and a connecting section; the active section is located at the driving wheel and the driven wheel a section contacting the workpiece to be cut; the two ends of the action section are respectively connected to the two contact sections, and the two contact sections are sections respectively contacting the sawing belt with the driving wheel and the driven wheel; The two ends of the connecting section are respectively connected between the driving wheel and the driven wheel, and the connecting section is located on the opposite side of the active section; the sensing end of the pressure sensor directly contacts the contact of the sawing strip segment. The saw band load detecting structure of the band saw machine according to claim 1, wherein one end edge of the saw band has serrations, and the sensing end of the pressure sensor directly contacts the position of the saw band. Wait for the other end of the sawtooth.