Novel abrasive belt transmission and control mechanism

Abstract

The present application relates to a novel abrasive belt transmission and control device, aiming to provide a simple structure, stable transmission and intelligent control function of the abrasive belt transmission system. The device includes an abrasive belt, a motor, a first transmission roller, a second transmission roller, a driving wheel, a driven wheel and an electric control system. The first transmission roller is connected with the fixed frame through the bearing and is provided with an extension part which is fixed with the driven wheel. The motor is transmission matched with the driving wheel and the driven wheel, and the output end of the motor is axially parallel with the first transmission roller. The electric control system can adjust the working mode of the motor, including the point operation, continuous operation and stop mode, to meet different operation requirements. The system further includes a delay relay, a control relay and an alternating current contactor, to ensure the smooth start and stop of the motor, and the thermal relay is added to provide overload protection. The device has the advantages of simple operation, accurate transmission, etc., and is widely used in abrasive belt grinding, polishing and other applications, and can be applied to other automatic transmission equipment.

Description

Technical Field

[0001] This invention relates to a belt abrasive drive device, particularly a drive device for feeding and controlling abrasive belts, applicable to automation equipment and machinery manufacturing, especially in applications such as belt abrasion and polishing. Background Technology

[0002] Belt sanders are commonly used grinding tools in modern industry, widely applied in metal processing, woodworking, and stone polishing. Traditional belt sander feed mechanisms typically employ simple motor-driven systems, but these have limitations in transmission stability, control precision, and the intelligence of the electrical control system. Existing technologies lack efficient and precise adjustment functions in the control systems of motor drives and transmission mechanisms, easily leading to problems such as unstable belt tension and inconvenient operation, thus limiting the application of belt sanders in high-precision machining.

[0003] Therefore, how to provide a sanding belt drive device that is simple in structure, easy to operate, stable in transmission, and has intelligent control has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] This invention provides a novel belt abrasive transmission and control mechanism, which aims to improve the stability and intelligent control of belt feeding by improving the design of the transmission system, thereby overcoming the shortcomings of the existing technology.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] 1. A sanding belt drive device, comprising a sanding belt, a drive motor, and an electrical control system, further comprising a first drive roller, a second drive roller, a drive wheel, and a driven wheel disposed on one side of the sanding belt; the first drive roller is connected to a fixed frame via a bearing, and one end of the first drive roller has an extended portion extending beyond the outside of the sanding belt conveyor channel; the driven wheel is fixed to the extended portion; the second drive roller is supported on the fixed frame via a second bearing; the motor is fixed to the fixed frame, and the axial direction of the motor output end is parallel to the axial direction of the first drive roller; the drive wheel is fixed to the motor output end and drives the driven wheel; and the electrical control system can adjust the operating mode of the motor, including jogging, continuous operation, and stop modes.

[0007] 2. The extended portion of the first transmission roller is equipped with a bushing, one end of which contacts the shaft end face of the driven wheel, and the other end abuts against the outer wall of the fixed frame.

[0008] 3. The shaft end of the driven wheel is fixed to the end face of the bushing by a nut to ensure the stable operation of the driven wheel.

[0009] 4. The electrical control system includes an operation button, a time delay relay, a control relay, and an AC contactor. The operation button is connected to the positive terminal of the power supply, and the other end of the button is connected to the negative terminal of the power supply through the time delay relay. The normally closed contact of the time delay relay is connected in series with the control relay, and the normally open contact of the control relay is electrically connected to the control terminal of the AC contactor. The normally open contact of the AC contactor controls the start and stop of the motor.

[0010] 5. The electrical control system further includes a thermal relay, whose normally closed contact is connected in series with the control terminal of the AC contactor, and the temperature control element of the thermal relay is connected to the motor for overload protection.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. Simple structure and high reliability: The invention ensures smooth transmission of the sanding belt through precise configuration of the transmission roller and motor, reducing equipment wear and improving work efficiency.

[0013] 2. Intelligent electrical control system: Compared with the traditional sanding belt feeding mechanism, the electrical control system of the present invention can precisely adjust the working mode according to the operation requirements, and provide inching, continuous operation and stop functions, making the operation simpler and more flexible.

[0014] 3. Overload protection function: The present invention incorporates a thermal relay into the electrical control system, which can automatically cut off the power supply when the motor is overloaded, protect the equipment from damage, and improve the safety and durability of the system.

[0015] 4. Wide range of applications: This device is not only suitable for processes such as belt sanding and polishing, but can also be widely used in other automated equipment that requires belt drive. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the belt drive device of the present invention. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, the technical solution of the present invention is as follows:

[0020] 1. A sanding belt drive device, comprising a sanding belt, a drive motor, and an electrical control system, further comprising a first drive roller, a second drive roller, a drive wheel, and a driven wheel disposed on one side of the sanding belt. The first drive roller is connected to a fixed frame via a bearing, and one end of the first drive roller has a protruding portion extending beyond the outer side of the sanding belt conveyor channel. The driven wheel is fixed to the protruding portion. The second drive roller is supported on the fixed frame via a second bearing. The motor is fixed to the fixed frame, and the axial direction of the motor output end is parallel to the axial direction of the first drive roller. The drive wheel is fixed to the motor output end and drives the driven wheel. Furthermore, the electrical control system can adjust the operating mode of the motor, including jogging, continuous operation, and stop modes.

[0021] 2. The extended portion of the first drive roller is equipped with a bushing, one end of which contacts the shaft end face of the driven wheel, and the other end abuts against the outer wall of the fixed frame.

[0022] 3. The shaft end of the driven wheel is fixed to the end face of the bushing by a nut to ensure the stable operation of the driven wheel.

[0023] 4. The electrical control system includes operation buttons, time delay relays, control relays, and AC contactors. The operation buttons are connected to the positive terminal of the power supply, and the other end of the buttons is connected to the negative terminal of the power supply through the time delay relay. The normally closed contact of the time delay relay is connected in series with the control relay, and the normally open contact of the control relay is electrically connected to the control terminal of the AC contactor. The normally open contact of the AC contactor controls the start and stop of the motor.

[0024] 5. The electrical control system further includes a thermal relay, whose normally closed contact is connected in series with the control terminal of the AC contactor, and the temperature control element of the thermal relay is connected to the motor for overload protection.

[0025] Example 1:

[0026] Figure 1 The diagram illustrates an embodiment of a sanding belt drive device. The device includes a sanding belt 1, a motor 2, a first drive roller 3, a second drive roller 4, a drive wheel 5, a driven wheel 6, a bearing 7, a mounting frame 8, and an electrical control system 9.

[0027] Motor 2 is connected to driven wheel 6 via drive wheel 5, and the output end of the motor is parallel to the axis of the first drive roller 3. The first drive roller 3 is fixed to the fixed frame 8 via bearing 7, and one end of it has a protruding part that is connected to the driven wheel 6. The second drive roller 4 is also mounted on the fixed frame 8 via bearing 7, and is used to support the other side of the sanding belt.

[0028] The electrical control system 9 includes a push button (SB), a time delay relay (KT), a control relay (KA), and an AC contactor (KM). The user selects the motor's operating mode and controls the motor's start and stop via the push button (SB). The time delay relay (KT) is responsible for adjusting the delayed start time to ensure a smooth motor start.

[0029] Example 2:

[0030] In another embodiment, the electronic control system 9 further includes a thermal relay (FR) for providing protection in case of motor overload. The normally closed contact of the thermal relay is connected to an AC contactor (KM) and to the circuitry between the relay and the motor. If the motor experiences an overload, the heating element of the thermal relay will automatically cut off the power supply to prevent equipment damage.

[0031] This invention provides a novel belt abrasive drive and control mechanism. Through precise configuration of the drive rollers and motor, combined with an intelligent electronic control system, it not only improves the stability of the belt abrasive drive but also enhances operational flexibility and safety. This invention has a simple structure, low cost, and is suitable for various automated equipment, showing broad application prospects.

[0032] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A sanding belt drive device, comprising a sanding belt, a drive motor, and an electrical control system, characterized in that: It also includes a first drive roller, a second drive roller, a drive wheel, and a driven wheel disposed on one side of the sanding belt. The first drive roller is connected to the fixed frame via a bearing, and one end of the first drive roller has a protruding portion that extends to the outside of the sanding belt conveyor channel. The driven wheel is fixed to the protruding portion. The second drive roller is supported on the fixed frame via a second bearing. The motor is fixed to the fixed frame, and the axial direction of the motor output end is parallel to the axial direction of the first drive roller. The drive wheel is fixed to the motor output end and drives the driven wheel. Furthermore, the electronic control system can adjust the operating mode of the motor, including inching, continuous operation, and stop modes.

2. The belt drive device according to claim 1, characterized in that: The extended portion of the first drive roller is equipped with a bushing, one end of which contacts the shaft end face of the driven wheel, and the other end abuts against the outer wall of the fixed frame.

3. The sanding belt drive device according to claim 2, characterized in that: The driven wheel's shaft end is fixed to the end face of the bushing by a nut, ensuring the stable operation of the driven wheel.

4. The belt drive device according to claim 1, characterized in that: The electrical control system includes an operation button, a time delay relay, a control relay, and an AC contactor. The operation button is connected to the positive terminal of the power supply, and the other end of the button is connected to the negative terminal of the power supply through the time delay relay. The normally closed contact of the time delay relay is connected in series with the control relay, and the normally open contact of the control relay is electrically connected to the control terminal of the AC contactor. The normally open contact of the AC contactor controls the start and stop of the motor.

5. The belt drive device according to claim 4, characterized in that: The electrical control system further includes a thermal relay, whose normally closed contact is connected in series with the control terminal of the AC contactor, and the temperature control element of the thermal relay is connected to the motor for overload protection.

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