Automatic end outer circle polishing device

Abstract

The utility model discloses an automatic polishing device for an outer circle of an end part. The automatic polishing device comprises a mounting rack and a fixing plate, a driven belt wheel is arranged on the fixing plate through a bearing, the inner ring of the bearing is fixedly connected to the fixing plate, and the outer ring of the bearing is fixedly connected to the driven belt wheel; the driven belt wheel is connected with a driving belt wheel on an output shaft of the motor through a transmission belt; two groups of polishing assemblies are arranged on the driven belt wheel, and each group of polishing assembly comprises a mounting plate hinged to the driven belt wheel, a driving roller fixedly connected to a hinged shaft, a driven roller connected to the mounting plate and an annular abrasive belt; the hinged shafts penetrate through the driven belt wheel, driven gears are fixedly connected to the rear sides of the hinged shafts, and the driven gears are meshed with gear rings fixedly connected to the inner rings of the bearings. A core shaft of one driven roller in each group of polishing components is connected with a piston rod of a respective abrasive belt tensioning cylinder; an air slip ring is fixedly connected in an inner ring of the bearing; the utility model has the advantages of high degree of automation, simple operation, safety and reliability, high processing efficiency and processing precision, long service life, greatly improved labor efficiency, and saved cost.

Description

Technical Field

[0001] The utility model relates to an end outer circle polishing device, in particular to an end outer circle automatic polishing device for rods or pipes. Background Art

[0002] At present, the automatic grinding of the outer circle of small-diameter metal pipes is mostly achieved by manual or wire wheel rotation processing, abrasive belt rotating pipe equipment, and the quality after processing is poor and the processing efficiency is low. The labor intensity is large, the investment amount of line construction is high, and the failure rate is high, especially for short and small pipes. There are certain safety hazards in manual grinding. The wire wheel rotation processing requires the gap to be adjusted and the wire wheel to be replaced at any time due to the rapid wear of the wire wheel. The processing quality is extremely unstable and cannot be adapted to the application of automatic production lines; the abrasive belt grinding equipment requires the pipe to be rotated, and it is difficult to achieve the requirements of occupational safety protection and operation efficiency guarantee, which makes the production line design more difficult, the investment is high, and the frequency of abrasive belt replacement is frequent, which is not conducive to the continuous operation of the production line. Summary of the invention

[0003] The purpose of the utility model is to provide a pipe end cylindrical polishing device in view of the above-mentioned deficiencies in the prior art, which has the advantages of high degree of automation, simple operation, safety and reliability, high processing efficiency and processing accuracy, long service life, greatly improves labor efficiency, and saves costs.

[0004] In order to achieve the above-mentioned purpose, the utility model is an end outer circle automatic polishing device, comprising a mounting frame and a fixed plate fixedly connected to the mounting frame; characterized in that: a driven pulley is arranged on the fixed plate through a bearing, wherein the inner ring of the bearing passes through the driven pulley and is fixedly connected to the fixed plate, the outer ring of the bearing is fixedly connected to the driven pulley, and a plurality of balls are arranged between the inner ring and the outer ring of the bearing; the driven pulley is connected to the driving pulley fixedly connected to the output shaft of the motor through a transmission belt; two groups of polishing components are arranged on the driven pulley, each group of polishing components includes a mounting plate hinged to the driven pulley through a hinge shaft at one end, a driving roller fixedly connected to the hinge shaft, and a driving roller connected to the mounting plate through respective mandrels. One or two driven rollers on the plate, an annular sanding belt wound around the driving roller and all the driven rollers, the mounting plate, the driving roller and the driven rollers are all located on the front side of the driven pulley close to the clamping device; the hinge shafts all axially pass through the driven pulley and are fixedly connected to driven gears on the rear side thereof, and the driven gears are all meshed with the gear rings fixedly connected to the inner ring of the bearing; the mandrel of a driven roller in each group of polishing components passes through the driven pulley and is connected to the piston rod of the respective sanding belt tensioning cylinders on the rear side of the driven pulley, the driven pulley is provided with a sliding hole corresponding to the mandrel, and the rear end of the sanding belt tensioning cylinder is hinged to the driven pulley; an air slip ring is fixedly connected to the inner ring of the bearing, and the two air interfaces of the sanding belt tensioning cylinder are connected to the air slip ring.

[0005] When the utility model is used, for a workpiece fixed on the mounting stand, and the end of the workpiece is located between the two annular abrasive belts, the motor is started at this time, the driven pulley rotates, and because the inner ring and the gear ring are stationary, the two driven gears rotate around the gear ring and rotate themselves, thereby driving the active roller to rotate, and the two annular abrasive belts move around on their respective rollers. At this time, air is supplied to the two abrasive belt tensioning cylinders through the air slip ring, so that the mounting plate swings around the hinge shaft, and the annular abrasive belts can be pressed against the outer wall of the end of the workpiece and rotate around it to implement grinding; the device has a high degree of automation and simple operation, does not require manual gripping of the workpiece, is safe and reliable, and two sets of polishing components rotate and grind around the workpiece, with high processing efficiency and processing accuracy, which greatly improves labor efficiency, and the production line is simpler, and only the annular abrasive belts need to be replaced, which can save costs;

[0006] As a further improvement of the utility model, the two groups of polishing components are symmetrically located on both sides of the center of the driven pulley; the two driven gears are symmetrically located on both sides of the gear ring; the driven pulley can rotate smoothly, and the workpiece can be evenly polished to improve the processing accuracy;

[0007] As a further improvement of the utility model, each group of polishing components includes two driven rollers connected to the mounting plate through their own mandrels, and the active roller and the two driven rollers in the same group are arranged in a triangle; the swing angle of the mounting plate can be increased, which is suitable for workpieces with larger outer diameters;

[0008] As a further improvement of the utility model, a positioning cylinder is fixedly connected to the rear end of the fixed plate, and the piston rod of the positioning cylinder passes through the air slip ring; the end of the workpiece contacts the piston rod of the positioning cylinder and can be axially positioned;

[0009] As a further improvement of the utility model, a positioning baffle is fixedly connected to the front end of the piston rod of the positioning cylinder, which is convenient for axial positioning of pipe-like workpieces;

[0010] In summary, the utility model has the advantages of high automation, simple operation, safety and reliability, high processing efficiency and processing precision, and long service life, which greatly improves labor efficiency and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the embodiment of the utility model.

[0012] Figure 2 for Figure 1 Top view of the .

[0013] Figure 3 for Figure 1 An enlarged stereoscopic view of the components on the driven pulley.

[0014] Figure 4 for Figure 3 Rear view of. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] like Figures 1 to 4 As shown, an end outer circle automatic polishing device of this embodiment comprises a mounting frame 1, a fixing plate 11 fixedly connected to the mounting frame 1, and a driven pulley 12 arranged on the fixing plate 11 through a bearing, wherein an inner ring 13 of the bearing passes through the driven pulley 12 and is fixedly connected to the fixing plate 11, an outer ring 15 of the bearing is welded and fixedly connected to the driven pulley 12, and a plurality of balls 14 are arranged between the inner ring 13 and the outer ring 15 of the bearing; the driven pulley 12 is connected to a driving pulley 17 on the output shaft of a motor 16 through a shaft. The driven pulley 12 is connected to the driven pulley 12 through a transmission belt (not shown); two groups of polishing components are symmetrically arranged on both sides of the center of the driven pulley, each group of polishing components includes a mounting plate 19 hinged to the driven pulley 12 at one end through a hinge shaft 18, a driving roller 23 fixed to the hinge shaft 18, two driven rollers 21 and 22 connected to the mounting plate 19 through their own mandrels 20, an annular abrasive belt 24 wound around the driving roller 23 and the two driven rollers 21 and 22, the mounting plate 19, the driving roller 23 and The driven rollers 21 and 22 are both located in front of the driven pulley near the clamping device. The driving roller 23 and the two driven rollers 21 and 22 of the same group are arranged in a triangle. The hinge shaft 18 axially passes through the driven pulley 12 and is fixedly connected to a driven gear 26 at its rear side. The driven gear 26 is meshed with a gear ring 27 welded and fixed to the inner ring 13 of the bearing. The two driven gears 26 are symmetrically located on both sides of the gear ring 27. The mandrel 20 of a driven roller 21 in each group of polishing components passes through the driven pulley 12 and is fixedly connected to the driven pulley. The piston rods of the respective belt tensioning cylinders 28 at the rear side of the wheels are connected, and the driven pulley 12 is provided with a sliding hole 29 corresponding to the core shaft 20. The rear end of the belt tensioning cylinder 28 is hinged to the driven pulley 12 through a hinge shaft 25; an air slip ring 30 is fixedly connected to the inner ring 13 of the bearing, and the two air interfaces of the belt tensioning cylinder 28 are connected to the air slip ring 30; a positioning cylinder 31 is fixedly connected to the rear end of the fixed plate 11, and the piston rod of the positioning cylinder 31 passes through the air slip ring 30, and a positioning baffle 32 is fixedly connected to the front end of the piston rod.

[0017] When the utility model is used, the workpiece is fixed on the mounting stand 1 by the positioning device, and the positioning baffle 32 is pressed against the end of the workpiece, so that the workpiece can be axially positioned and buffered, and the end of the workpiece is placed between the two annular abrasive belts 24; the motor 16 is started, and the active pulley 17 drives the driven pulley 12 to rotate. Since the inner ring 13 and the gear ring 27 are fixed, the two driven gears 26 rotate around the gear ring 27 and rotate on their own while the driven pulley 12 rotates, thereby driving the two active rollers 23 to rotate, and the two annular abrasive belts 24 move around on their respective three rollers. At this time, the two abrasive belt tensioning cylinders 28 are fed with air through the air slip ring 30 to shrink their piston rods, so that the mounting plate 19 swings around the hinge shaft 18 toward the center of the driven pulley 12, and the annular abrasive belt 24 can be pressed against the outer wall of the end of the workpiece and rotate around the workpiece with the driven pulley 12 to implement grinding; the device can drive the driven pulley 12 to rotate and the two annular abrasive belts 24 to rotate on their respective three rollers through a motor The three rollers of the driven pulley 12 move around, and the production line is simpler, highly automated, easy to operate, and does not require manual gripping of the workpiece, which is safe and reliable; the driven pulley 12 is supported by the outer ring 15 of the bearing, and the two groups of polishing components are symmetrically located on both sides of the center of the driven pulley, and the two driven gears 26 are symmetrically located on both sides of the gear ring 27, which can ensure smooth rotation. The two groups of polishing components rotate and polish around the workpiece, and the workpiece can be evenly polished. The processing efficiency and processing accuracy are high, which greatly improves the labor efficiency, and only the annular abrasive belt needs to be replaced, which can save costs and improve production efficiency; the active roller 23 and the two driven rollers 21 and 22 of the same group are arranged in a triangular shape, which can increase the swing angle of the mounting plate 19 and is suitable for workpieces with larger outer diameters; the air slip ring 30 can ensure continuous air supply to the abrasive belt tensioning cylinder 28 during processing, so that the annular abrasive belt 24 is always pressed against the outer wall of the end of the workpiece; the positioning baffle 32 can axially position the pipe or bar;

[0018] The above embodiments have been described, but it should be understood that the above embodiments are only used for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments.

Claims

1. An automatic polishing device for an end outer circle, comprising a mounting frame and a fixing plate fixedly connected to the mounting frame; Features: A driven pulley is arranged on a fixed plate through a bearing, wherein the inner ring of the bearing passes through the driven pulley and is fixedly connected to the fixed plate, the outer ring of the bearing is fixedly connected to the driven pulley, and a plurality of balls are arranged between the inner ring and the outer ring of the bearing; the driven pulley is connected to the driving pulley fixedly connected to the output shaft of the motor through a transmission belt; two groups of polishing components are arranged on the driven pulley, each group of polishing components includes a mounting plate with one end hinged to the driven pulley through a hinge shaft, a driving roller fixedly connected to the hinge shaft, one or two driven rollers connected to the mounting plate through their respective mandrels, and a roller wound around the driving roller and all the driven rollers. The annular sanding belt, the mounting plate, the active roller and the driven roller are all located at the front side of the driven pulley close to the clamping device; the hinge shafts all axially pass through the driven pulley and are fixedly connected to the driven gears at the rear side thereof, and the driven gears are all meshed with the gear rings fixedly connected to the inner ring of the bearing; the mandrel of a driven roller in each set of polishing assemblies passes through the driven pulley and is connected to the piston rod of the respective sanding belt tensioning cylinders at the rear side of the driven pulley, the driven pulley is provided with a sliding hole corresponding to the mandrel, and the rear end of the sanding belt tensioning cylinder is hinged to the driven pulley; an air slip ring is fixedly connected to the inner ring of the bearing, and the two air interfaces of the sanding belt tensioning cylinder are connected to the air slip ring.

2. An automatic polishing device for the outer circle of an end portion as claimed in claim 1, Features: The two groups of polishing components are symmetrically located on both sides of the center of the driven pulley; the two driven gears are symmetrically located on both sides of the gear ring.

3. An automatic polishing device for the outer circle of an end portion as claimed in claim 1 or 2, Features: Each group of polishing components comprises two driven rollers connected to the mounting plate through respective core shafts, and the driving roller and the two driven rollers in the same group are arranged in a triangle.

4. An automatic polishing device for the outer circle of an end portion as claimed in claim 3, Features: A positioning cylinder is fixedly connected to the rear end of the fixed plate, and a piston rod of the positioning cylinder passes through an air slip ring.

5. An automatic polishing device for the outer circle of an end portion as claimed in claim 4, Features: The front end of the piston rod of the positioning cylinder is fixedly connected with a positioning baffle.

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