A flat sand machine

Abstract

The present invention discloses a sanding machine, comprising: a frame, a sanding device arranged on the frame, the sanding device comprising a sanding belt, a plurality of guide wheels, and a rotary motor driving the sanding belt to rotate around the guide wheels, characterized in that the sanding device is provided with a guide rail, a pressing plate mechanism slidably connected to the guide rail, a driving device driving the pressing plate mechanism to run along the guide rail, and the pressing plate mechanism is movably connected with the sanding belt. The present invention effectively improves the polishing efficiency and effectively improves the polishing uniformity of the workpiece surface.

Description

Technical Field

[0001] The invention relates to the technical field of sanding machines, in particular to a flat sanding machine. Background Art

[0002] Products such as iron, stainless steel, and wood need to be ground and polished during the production process. The flat sanding machine uses a pressure plate to press the sanding belt and nylon belt to polish the workpiece surface. However, the existing flat sanding machine generally uses a manually controlled pressure plate to flat sand the workpiece, so that during the grinding and polishing operation, the grinding and polishing pressure cannot be kept stable. The workpiece is continuously ground and polished during the rotation of the sanding belt, resulting in uneven surface polishing, which is easy to leave damage on the workpiece, reducing production quality and efficiency. In addition, the manual operation working method cannot accurately process large-sized workpieces, and there are obvious defects. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and provide a flat sanding machine with constant grinding and polishing pressure and high workpiece surface polishing uniformity.

[0004] The present invention adopts the following technical solutions to achieve the above purpose:

[0005] A sand leveling machine comprises: a frame, a sand leveling device arranged on the frame, the sand leveling device comprises a sand belt, a plurality of guide wheels, and a rotating motor driving the sand belt to rotate around the guide wheels, characterized in that a guide rail, a pressure plate mechanism slidably connected to the guide rail, and a driving device driving the pressure plate mechanism to run along the guide rail are also arranged in the sand leveling device, wherein the pressure plate mechanism is in top contact with the sand belt.

[0006] As a further explanation of the above scheme, the driving device includes a driving motor, a driving wheel drivingly connected to the motor output shaft, a driven wheel, and a synchronous belt connected around the driving wheel and the driven wheel, wherein a connecting member is fixedly connected to the synchronous belt, and the connecting member is fixedly connected to the pressure plate mechanism. The synchronous belt reciprocates under the drive of the motor, thereby driving the pressure plate mechanism to slide on the guide rail.

[0007] Another alternative solution is that the driving device includes a driving motor, a bearing support, a screw and a screw seat, wherein both ends of the screw are arranged on the bearing support, the motor is transmission-connected to one end of the screw, the screw seat is arranged on the screw, and the pressure plate mechanism is fixedly connected to the screw seat.

[0008] Furthermore, the pressure plate mechanism includes a base slidably connected to the guide rail, a movable seat movably connected to the base, a pressure plate fixedly connected to the movable seat, and a pressure control device for controlling the pressure of the pressure plate, wherein the pressure plate is in top contact with the sanding belt.

[0009] Furthermore, the pressure control device includes a cylinder and a cylinder pressure gauge connected to the cylinder control through a PLC system, wherein the cylinder is fixedly connected to the base, the output shaft of the cylinder is transmission-connected to the movable seat, and the cylinder pressure gauge controls the pressure of the pressure plate against the sanding belt.

[0010] Another alternative solution is that the pressure control device includes a servo motor and a pressure sensor connected to the servo motor through a PLC system, wherein the servo motor is fixedly connected to the base, the output shaft of the servo motor is transmission-connected to the movable seat, and the pressure sensor detects the pressure of the pressure plate against the sanding belt.

[0011] Furthermore, an eccentric device is also provided on the pressure plate mechanism, and the eccentric device includes a connecting seat slidably connected to the guide rail, an eccentric motor fixedly mounted on the connecting seat, and a turntable drivingly connected to the output shaft of the eccentric motor, wherein a roller is eccentrically connected to the turntable, a horizontal connecting guide rail is provided on the connecting seat, and the base is slidably connected to the connecting guide rail, wherein a connecting plate is fixedly connected to the connecting seat, and a through groove cooperating with the roller is provided on the connecting plate.

[0012] Furthermore, the sand-leveling device is movably connected to the frame through a lifting device, and the lifting device includes a lifting motor and several groups of lifting screws drivingly connected to the output shaft of the lifting motor. Each group of the lifting screws is rotatably connected to the sand-leveling device, and the sand-leveling device rises and falls with the rotation of the lifting screws.

[0013] Furthermore, a conveying device is also provided on the frame, and the sand-leveling device is installed at the input end of the conveying device. The sand-leveling device, a grinding sand disc, or a sand-leveling device, a grinding wheel, or a sand-leveling device, a grinding sand disc, and a grinding wheel are sequentially arranged on the frame along the conveying direction of the conveying device.

[0014] Furthermore, measuring and detecting light curtains are arranged on both sides of the frame corresponding to the sand leveling device, and the measuring and detecting light curtains are fixedly connected to the frame in a vertical direction.

[0015] Furthermore, the sanding device is provided with a belt tensioning mechanism, which includes a mounting seat with a slide rail, an adjustment seat, an adjustment cylinder and a guide wheel, wherein the guide wheel is installed on the adjustment seat, the adjustment seat is slidably connected to the mounting seat through the slide rail, and the output shaft of the adjustment cylinder is fixedly connected to the adjustment seat.

[0016] The beneficial effects that can be achieved by the present invention using the above technical solution are:

[0017] 1. The present invention flexibly connects the sand-leveling device to the frame through a lifting device, which can effectively adjust the working height of the sand-leveling device and is suitable for processing workpieces of various thicknesses; a pressure control device is provided on the pressing plate mechanism, which adopts two control modes, namely, a cylinder and a cylinder pressure gauge, or a servo motor and a pressure sensor, to accurately control the downward pressure of the pressing plate, maintain a stable pressure, and prevent excessive wear of the workpiece.

[0018] 2. The pressing plate mechanism realizes the reciprocating motion of the pressing plate mechanism perpendicular to the conveying direction by setting a guide rail and a base movably connected thereto, so that the working surface of the abrasive belt is further expanded. Even the corners of the workpiece can be evenly polished by the abrasive belt, which is suitable for the processing of large-sized workpieces. At the same time, measuring and detection light curtains are set on both sides of the frame to accurately detect the width of the workpiece, thereby controlling the moving distance of the pressing plate device on the guide rail to prevent sand leakage and sand error, thereby ensuring production quality.

[0019] 3. The present invention can also realize a continuous production mode of conveying and leveling the workpiece by adding a conveying device to the frame, thereby further improving the production efficiency. In addition, a flexible combination of a sanding device-abrasive disc, a sanding device-abrasive wheel, or a sanding device-abrasive disc-abrasive wheel and other polishing devices can be selected and arranged in sequence along the conveying direction, thereby achieving the purpose of realizing multiple production modes with one machine and having a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a schematic structural diagram of the sand leveling device provided by the present invention.

[0022] Figure 3 This is a schematic structural diagram of the sand leveling device provided by the present invention.

[0023] Figure 4 This is a schematic structural diagram of the sand leveling device provided by the present invention.

[0024] Figure 5 for Figure 2 Schematic diagram of the structure of the drive device.

[0025] Figure 6 for Figure 2 Schematic diagram of the structure of the medium pressure plate mechanism.

[0026] Figure 7 This is a schematic structural diagram of the eccentric device provided by the present invention.

[0027] Figure 8 for Figure 7 Side view of.

[0028] Fig. 9It is a structural schematic diagram of the present invention.

[0029] Fig.10 This is a structural schematic diagram of the abrasive belt tensioning mechanism provided by the present invention.

[0030] Description of the accompanying drawings: 1, frame, 2, flat sanding device, 2-1, sanding belt, 2-2, guide wheel, 2-3, rotating motor, 3, guide rail, 4, pressing plate mechanism, 4-1, base, 4-2, movable seat, 4-3, pressing plate, 5, driving device, 5-1, driving motor, 5-2, driving wheel, 5-3, driven wheel, 5-4, synchronous belt, 5-5, connecting piece, 6, pressure control device, 6-1, cylinder, 7, eccentric device, 7- 1. Connecting seat, 7-2. Eccentric motor, 7-3. Turntable, 7-4. Roller, 7-5. Connecting guide rail, 7-6. Connecting plate, 7-7. Through slot, 8. Lifting device, 8-1. Lifting motor, 8-2. Lifting screw, 9. Conveying device, 10. Polishing disc, 11. Polishing wheel, 12. Measuring and detecting light curtain, 13. Sanding belt tensioning mechanism, 13-1. Mounting seat, 13-2. Adjusting seat, 13-3. Adjusting cylinder. DETAILED DESCRIPTION

[0031] The present technical solution is described in detail below in conjunction with specific embodiments.

[0032] Embodiment 1

[0033] like Figure 1-Figure 4 As shown, a sanding machine comprises: a frame 1, a sanding device 2 arranged on the frame, the sanding device 2 comprises a sanding belt 2-1, a plurality of guide wheels 2-2, and a rotating motor 2-3 driving the sanding belt to rotate around the guide wheels, characterized in that a guide rail 3, a pressure plate mechanism 4 slidably connected to the guide rail 3, and a driving device 5 driving the pressure plate mechanism 4 to run along the guide rail 3 are also arranged in the sanding device 2, wherein the pressure plate mechanism 4 is in top contact with the sanding belt 2-1.

[0034] Furthermore, if Figure 5 As shown, the driving device 5 includes a driving motor 5-1, a driving wheel 5-2 drivingly connected to the motor output shaft, a driven wheel 5-3, and a synchronous belt 5-4 connected around the driving wheel and the driven wheel, wherein a connecting member 5-5 is fixedly connected to the synchronous belt 5-4, and the connecting member is fixedly connected to the pressure plate mechanism 4.

[0035] Furthermore, if Figure 6 As shown, the pressure plate mechanism 4 includes a base 4-1 slidably connected to the guide rail, a movable seat 4-2 movably connected to the base, a pressure plate 4-3 fixedly connected to the movable seat, and a pressure control device 6 for controlling the pressure of the pressure plate, wherein the pressure plate 4-3 is in top contact with the sanding belt.

[0036] Furthermore, the pressure control device 6 includes a cylinder 6-1 and a cylinder pressure gauge connected to the cylinder control through a PLC system, wherein the cylinder 6-1 is fixedly connected to the base 4-1, the output shaft of the cylinder is transmission-connected to the movable seat 4-2, and the cylinder pressure gauge controls the pressure of the pressure plate against the sanding belt.

[0037] Furthermore, if Figure 7-Figure 8 As shown, the pressure plate mechanism 4 is also provided with an eccentric device 7, and the eccentric device 7 includes a connecting seat 7-1 slidably connected to the guide rail, an eccentric motor 7-2 fixedly mounted on the connecting seat, and a turntable 7-3 drivingly connected to the output shaft of the eccentric motor, the turntable is eccentrically connected to a roller 7-4, the connecting seat 7-1 is provided with a horizontal connecting guide rail 7-5, the base 4-1 is slidably connected to the connecting guide rail 7-5, wherein a connecting plate 7-6 is fixedly connected to the base 4-1, and the connecting plate is provided with a through groove 7-7 cooperating with the roller 7-4.

[0038] Furthermore, the sand-leveling device 2 is movably connected to the frame 1 through a lifting device 8, and the lifting device includes a lifting motor 8-1 and several groups of lifting screws 8-2 drivingly connected to the output shaft of the lifting motor. Each group of the lifting screws is rotatably connected to the sand-leveling device, and the sand-leveling device rises and falls with the rotation of the lifting screws.

[0039] Furthermore, if Fig. 9 As shown, the frame is also provided with a conveying device 9, and the sand-leveling device is installed at the input end of the conveying device 9. The frame 1 is provided with a sand-leveling device 2 and a grinding sand disc 10, or a sand-leveling device 2 and a grinding wheel 11, or a sand-leveling device 2, a grinding sand disc 10 and a grinding wheel 11 in sequence along the conveying direction of the conveying device 9.

[0040] Furthermore, measuring and detecting light curtains 12 are provided on the frame 1 at two sides corresponding to the sand leveling device 2 , and the measuring and detecting light curtains 12 are fixedly connected to the frame 1 along the vertical direction.

[0041] Furthermore, if Fig.10 As shown, the sanding device 2 is provided with a belt tensioning mechanism 13, and the belt tensioning mechanism 13 includes a mounting seat 13-1 with a slide rail, an adjusting seat 13-2, an adjusting cylinder 13-3 and a guide wheel 2-2, wherein the guide wheel 2-2 is mounted on the adjusting seat 13-2, the adjusting seat 13-2 is slidably connected to the mounting seat 13-1 through the slide rail, and the output shaft of the adjusting cylinder 13-3 is fixedly connected to the adjusting seat 13-2.

[0042] In this embodiment, the sanding device on the sanding machine can be set to a triangular sanding frame or a quadrilateral sanding frame according to the number of guide wheels. In the actual production process, the worker adjusts the lifting device according to the thickness of the workpiece to control the lifting of the sanding device so that the sanding belt can contact the workpiece. At the same time, the pressure data of the cylinder pressure gauge is preset according to the degree of wear of the required finished product. The pressure applied to the pressing plate by the cylinder is accurately controlled by the PLC system. The pressing plate is connected to the sanding belt and the workpiece for sanding; the measuring and detection light curtains set on both sides of the frame are preferably SK08 model series. The light curtain can accurately measure the width of the workpiece and feed back the data to the PLC system. The PLC system controls the operation of the drive motor to realize the reciprocating movement of the pressing plate mechanism on the guide rail. A conveying device can also be added to the frame to realize a continuous production mode of conveying and sanding the workpiece at the same time, further improving production efficiency. In addition, a flexible combination of various polishing devices such as a sanding device-abrasive disc, or a sanding device-abrasive wheel, or a sanding device-abrasive disc-abrasive wheel can be selected to be set in sequence along the conveying direction. This can achieve the purpose of realizing multiple production modes with one machine and has a wide range of applications.

[0043] Embodiment 2

[0044] The structure of a sand leveling machine provided in this embodiment is basically the same as that of the first embodiment, except that: another alternative solution is provided, wherein the driving device includes a driving motor, a bearing support, a screw, and a screw seat, wherein both ends of the screw are arranged on the bearing support, the motor is transmission-connected to one end of the screw, the screw seat is arranged on the screw, and the pressure plate mechanism is fixedly connected to the screw seat.

[0045] Embodiment 3

[0046] The structure of a flat sanding machine provided in this embodiment is basically the same as that of the first embodiment, except that: another alternative solution is provided, the pressure control device includes a servo motor, and a pressure sensor connected to the servo motor through a PLC system, wherein the servo motor is fixedly connected to the base, the output shaft of the servo motor is transmission-connected to the movable seat, and the pressure sensor detects the pressure of the pressure plate against the sanding belt.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A sand leveling machine, comprising: Frame, a sand-leveling device arranged on the frame, the sand-leveling device comprising a sanding belt, a plurality of guide wheels, and a rotating motor that drives the sanding belt to rotate around the guide wheel, characterized in that the sand-leveling device is provided with a guide rail, a pressure plate mechanism slidably connected to the guide rail, a driving device that drives the pressure plate mechanism to move along the guide rail, and the pressure plate mechanism is movably connected to the sanding belt; the driving device comprises a driving motor, a driving wheel connected to the output shaft of the driving motor, a driven wheel, and a synchronous belt connected around the driving wheel and the driven wheel, wherein a connecting piece is fixedly connected to the synchronous belt, and the connecting piece is fixedly connected to the pressure plate mechanism; the pressure plate mechanism comprises a base slidably connected to the guide rail, a movable seat movably connected to the base, a pressure plate fixedly connected to the movable seat, and a pressure control device for controlling the pressure of the pressure plate, wherein the pressure plate is in top contact with the sanding belt; the pressure The control device includes a cylinder and a cylinder pressure gauge connected to the cylinder control through a PLC system, wherein the cylinder is fixedly connected to the base, the output shaft of the cylinder is transmission-connected to the movable seat, and the cylinder pressure gauge controls the pressure of the pressure plate against the sanding belt; the pressure plate mechanism is also provided with an eccentric device, the eccentric device includes a connecting seat slidably connected to the guide rail, an eccentric motor fixedly mounted on the connecting seat, and a turntable transmission-connected to the output shaft of the eccentric motor, a roller is eccentrically connected to the turntable, a connecting guide rail in a horizontal direction is provided on the connecting seat, and the base is slidably connected to the connecting guide rail, wherein a connecting plate is fixedly connected to the connecting seat, and a through groove cooperating with the roller is provided on the connecting plate; measuring and detecting light curtains are provided on both sides of the frame corresponding to the sand leveling device, and the measuring and detecting light curtains are fixedly connected to the frame in a vertical direction.

2. A sand leveling machine according to claim 1, characterized in that: The frame is also provided with a conveying device, the sanding device is installed at the input end of the conveying device, and the sanding device, a grinding disc, or a sanding device, a grinding wheel, or a sanding device, a grinding disc, and a grinding wheel are sequentially arranged on the frame along the conveying direction of the conveying device.

3. A sand leveling machine according to claim 1, characterized in that: The sand-leveling device is movably connected to the frame through a lifting device. The lifting device includes a lifting motor and a plurality of lifting screws drivingly connected to the output shaft of the lifting motor. Each group of the lifting screws is rotationally connected to the sand-leveling device, and the sand-leveling device rises and falls with the rotation of the lifting screws.

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