Band-sawing machine with tension display device

Abstract

The invention discloses a band-sawing machine with a tension display device, which comprises a sliding ruler potentiometer, one end of the sliding ruler potentiometer is electrically connected with a digital display screen, the bottom of the sliding ruler potentiometer is slidably connected with a threaded plate, the upper end of the threaded plate is fixedly connected with a potentiometer bracket, the top of the sliding ruler potentiometer is slidably connected with a sliding block, and the sliding block is fixedly connected with the sliding ruler potentiometer. According to the band sawing machine with the tension display device, tensioning control can be conducted on a saw blade through bounce of a spring, the tightness degree of the saw blade can be better controlled, the saw blade can be more conveniently and rapidly adjusted, the saw blade can be more conveniently and rapidly adjusted, and the band sawing machine with the tension display device is more convenient to use. Meanwhile, the potentiometer push rod can move along with the hanging plate through the notch, the numerical value on the digital display screen changes accordingly, the tension numerical value is displayed in real time by adjusting the position of the upper wheel, adjustment is more accurate, and client operation is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of band saw machines, in particular to a band saw machine with a tension display device. Background Art

[0002] In a woodworking band saw, the tensioning mechanism is an important component of the woodworking band saw. It uses the tensioning force of the elastic part to move the upper wheel away from the lower wheel, thereby tensioning the saw blade connected to the upper and lower wheels against the wheel, and driving the saw blade to move through the rotation of the wheel, thereby achieving the purpose of cutting wood.

[0003] There are many types of saw blade tensioning mechanisms, including quick tensioning type and ordinary tensioning type. The quick tensioning type is further divided into the circumferential cam type and the end cam type. Regardless of the type of tensioning mechanism used, the saw blade must be tensioned to the appropriate position during the use of the machine. If the tensioning force is too small, the saw blade may fall off during operation, causing safety hazards; if the tensioning force is too large, the saw blade will be used in an over-tightened state for a long time, the life of the saw blade will be shortened, and there is also a risk of breakage.

[0004] Pay attention to the safety and protection measures of woodworking machinery to avoid accidents during operation and ensure personal safety. Therefore, it is particularly important to maximize the personal safety of users when operating a band saw.

[0005] The current band saw machine requires the operator to sense the deflection of the saw blade by pressing with fingers and make adjustments. This adjustment method is difficult for beginners. Alternatively, a pointer is installed on the tensioning mechanism, and the machine body has tensioning positions for saw blades of different widths. The pointer is made to point to the corresponding saw blade width position by adjusting the tensioning mechanism. There is a certain tensioning error, and as the machine is used for a longer time, the saw blade length will increase, and the position indicated by the pointer will become inaccurate. The saw blade is not tensioned at the optimal tensioning position, which brings great inconvenience and safety hazards to the operator. Therefore, we propose a band saw machine with a tension display device. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The present invention provides a band saw machine with a tension display device, comprising a sliding scale potentiometer, one end of the sliding scale potentiometer is electrically connected to a digital display screen, the bottom of the sliding scale potentiometer is slidably connected to a threaded plate, the upper end of the threaded plate is fixedly connected to a potentiometer bracket, the top of the sliding scale potentiometer is slidably connected to a slider, the center end of one side of the slider is fixedly installed with an upper wheel axle, one side of the slider is fixedly connected to a hanging plate, and a notch is provided on the surface of the hanging plate.

[0008] As a preferred technical solution of the present invention, a tensioning frame is fixed to the outside of the sliding scale potentiometer, a threaded rod is slidably connected to the inside of the tensioning frame, and the outer periphery of the threaded rod passes through the tensioning frame and is slidably connected to the slider, and the bottom of the threaded rod is threadedly connected to the threaded plate.

[0009] As a preferred technical solution of the present invention, a tensioning knob is fixedly connected to the upper end of the threaded rod, a potentiometer push rod is provided at the upper end of the slide potentiometer, and the potentiometer push rod is slidably connected to the inside of the slide potentiometer.

[0010] As a preferred technical solution of the present invention, a spring is sleeved on the outer periphery of the lower end of the threaded rod, and the upper and lower ends of the spring are in contact with the bottom of the slider and the upper end of the threaded plate respectively.

[0011] As a preferred technical solution of the present invention, the outer periphery of the upper wheel shaft is rotatably connected to the upper wheel, and the outer periphery of the upper wheel is connected to the lower wheel through a saw blade transmission.

[0012] As a preferred technical solution of the present invention, one side of the potentiometer push rod passes through the notch and is fixedly connected to the hanging plate, and one side of the sliding scale potentiometer is fixedly connected to the potentiometer bracket.

[0013] As a preferred technical solution of the present invention, anti-slip patterns are arranged around the surface of the tensioning knob.

[0014] The beneficial effects of the present invention are:

[0015] 1. This band saw machine with a tension display device is provided with a threaded rod, and the tensioning knob is rotated to drive the threaded rod to rotate so as to adjust the height of the threaded plate, so as to move the upper wheel up and down, and adjust the tension of the saw blade;

[0016] 2. This band saw machine with a tension display device can control the tension of the saw blade by setting a spring, and the rebound force of the spring can better control the tightness of the saw blade. At the same time, the potentiometer push rod can move with the hanging plate through the notch, and the value on the digital display screen changes accordingly. The tension value can be displayed in real time by adjusting the upper wheel position, and the adjustment is more accurate, which is convenient for customers to operate. The present invention has a simple and reasonable structure, a novel design, simple and convenient operation, and a high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1It is a schematic diagram of the installation of a digital display screen and a sliding scale potentiometer of a band saw machine with a tension display device according to the present invention;

[0020] Figure 2 It is an exploded view of a tensioning device of a slide ruler potentiometer of a band saw machine with a tension display device of the present invention;

[0021] Figure 3 It is a schematic diagram of a spring structure of a band saw machine with a tension display device according to the present invention;

[0022] Figure 4 It is a schematic diagram of the saw blade structure of a band saw machine with a tension display device according to the present invention;

[0023] Figure 5 The present invention is a simplified diagram of the working principle of a band saw machine with a tension display device.

[0024] In the figure: 1, slide potentiometer; 101, potentiometer push rod; 2, digital display screen; 3, threaded plate; 4, potentiometer bracket; 5, spring; 6, hanging plate; 601, notch; 7, upper wheel shaft; 8, slider; 9, tensioning frame; 10, threaded rod; 11, tensioning knob; 12, upper wheel; 13, saw blade; 14, lower wheel. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example: Figure 1-Figure 5 As shown, a band saw machine with a tension display device of the present invention includes a sliding scale potentiometer 1, one end of the sliding scale potentiometer 1 is electrically connected to a digital display screen 2, the bottom of the sliding scale potentiometer 1 is slidably connected to a threaded plate 3, the upper end of the threaded plate 3 is fixedly connected to a potentiometer bracket 4, the top of the sliding scale potentiometer 1 is slidably connected to a slider 8, the center end of one side of the slider 8 is fixedly installed with an upper wheel shaft 7, one side of the slider 8 is fixedly connected to a hanging plate 6, and a notch 601 is opened on the surface of the hanging plate 6.

[0027] Among them, a tensioning frame 9 is fixed to the outside of the slide potentiometer 1, and a threaded rod 10 is slidably connected to the inside of the tensioning frame 9, and the outer periphery of the threaded rod 10 passes through the tensioning frame 9 and is slidably connected to the slider 8, and the bottom of the threaded rod 10 is threadedly connected to the threaded plate 3. By setting the threaded rod 10, the threaded plate 3 can be moved by rotating the threaded rod 10 to adjust the height of the threaded plate 3.

[0028] Among them, the upper end of the threaded rod 10 is fixedly connected with a tensioning knob 11, the upper end of the slide potentiometer 1 is provided with a potentiometer push rod 101, and the potentiometer push rod 101 is slidably connected to the inside of the slide potentiometer 1. By setting the tensioning knob 11, the threaded rod 10 can be driven to rotate by rotating the tensioning knob 11.

[0029] Among them, a spring 5 is sleeved on the outer periphery of the lower end of the threaded rod 10, and the upper and lower ends of the spring 5 are respectively in contact with the bottom of the slider 8 and the upper end of the threaded plate 3. By setting the spring 5, the spring 5 is squeezed, and the reaction force is applied to the slider 8, so that the slider 8 moves upward with the upper wheel shaft 7 and the upper wheel 12, so that the distance between the upper wheel 12 and the lower wheel 14 will become larger, and the saw blade 13 will be tensioned, so that the saw blade 13 maintains an appropriate tension.

[0030] Among them, the outer periphery of the upper wheel shaft 7 is rotatably connected to the upper wheel 12, and the outer periphery of the upper wheel 12 is connected to the lower wheel 14 through a saw blade 13. By setting the saw blade 13, the upper wheel 12 is connected to the lower wheel 14 through the saw blade 13, and the position of the upper wheel 12 is adjusted by rotating the tensioning knob 11 to display the tension value in real time, which makes the adjustment more accurate and convenient for customers to operate.

[0031] Among them, one side of the potentiometer push rod 101 passes through the slot 601 and is fixedly connected to the hanging plate 6, and one side of the slide potentiometer 1 is fixedly connected to the potentiometer bracket 4. By setting the slot 601, the potentiometer push rod 101 can move through the slot 601 following the hanging plate 6, and the value on the digital display screen 2 changes accordingly.

[0032] Among them, the surface of the tensioning knob 11 is provided with anti-skid patterns around it. By providing the anti-skid patterns, the roughness of the contact surface is increased to improve the friction force, and it can also ensure that the user can firmly hold the tensioning knob 11 and turn it to avoid slipping.

[0033] Among them, see Figure 5 In the figure, A represents the screen, and B represents the slide potentiometer tensioning device structure formed by all the above structures.

[0034] Working principle: When in use, the slider potentiometer is used in conjunction with the display screen. When the machine is powered on, the tension value will be displayed on the digital display screen 2. If the tension value is too small, the tension knob 11 is rotated to rotate the threaded rod 10, driving the threaded plate 3 to move upward. The threaded plate 3 squeezes the compression spring 5, and the reaction force of the spring 5 is applied to the slider 8, so that the slider 8 moves upward with the upper wheel shaft 7 and the upper wheel 12, so that the distance between the upper wheel 12 and the lower wheel 14 will increase, and the saw blade 13 will be tensioned. Due to the pulling force of the saw blade 13, when the threaded plate 3 and the slider 8 move upward at the same time, the relative distance between the threaded plate 3 and the slider 8 will decrease, and the potentiometer push rod 101 will be displaced, and the value on the digital display screen 2 will change accordingly until it is adjusted to a suitable value. If the tension is too large, the adjustment is vice versa.

[0035] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A band saw machine with a tension display device, comprising a slide potentiometer (1), characterized in that: One end of the slider potentiometer (1) is electrically connected to a digital display screen (2); the bottom of the slider potentiometer (1) is slidably connected to a threaded plate (3); the upper end of the threaded plate (3) is fixedly connected to a potentiometer bracket (4); the top of the slider potentiometer (1) is slidably connected to a slider (8); an upper wheel shaft (7) is fixedly mounted on a central end of one side of the slider (8); a hanging plate (6) is fixedly connected to one side of the slider (8); a notch (601) is provided on the surface of the hanging plate (6).

2. A band saw machine with a tension display device according to claim 1, characterized in that: A tensioning frame (9) is fixed to the outside of the slide potentiometer (1), a threaded rod (10) is slidably connected to the inside of the tensioning frame (9), and the outer periphery of the threaded rod (10) passes through the tensioning frame (9) and is slidably connected to the slider (8), and the bottom of the threaded rod (10) is threadedly connected to the threaded plate (3).

3. A band saw machine with a tension display device according to claim 1, characterized in that: The upper end of the threaded rod (10) is fixedly connected to a tension knob (11), the upper end of the slide potentiometer (1) is provided with a potentiometer push rod (101), and the potentiometer push rod (101) is slidably connected to the inside of the slide potentiometer (1).

4. A band saw machine with a tension display device according to claim 2, characterized in that: A spring (5) is sleeved on the outer periphery of the lower end of the threaded rod (10), and the upper and lower ends of the spring (5) are in contact with the bottom of the slider (8) and the upper end of the threaded plate (3) respectively.

5. A band saw machine with a tension display device according to claim 1, characterized in that: The outer periphery of the upper wheel shaft (7) is rotatably connected to the upper wheel (12), and the outer periphery of the upper wheel (12) is transmission-connected to the lower wheel (14) via a saw blade (13).

6. A band saw machine with a tension display device according to claim 3, characterized in that: One side of the potentiometer push rod (101) passes through the notch (601) and is fixedly connected to the hanging plate (6), and one side of the sliding scale potentiometer (1) is fixedly connected to the potentiometer bracket (4).

7. A band saw machine with a tension display device according to claim 1, characterized in that: The surface of the tensioning knob (11) is provided with anti-slip patterns around its periphery.

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