Automatic sand changing platform

Abstract

The utility model discloses an automatic sand changing table which comprises a rack, and a sand changing bin, a first sand tearing mechanism, a second sand tearing mechanism, an air blowing mechanism and a detection mechanism which are arranged on the rack, the sand changing bin comprises a plurality of sand guiding columns vertically arranged on the upper surface of the rack platform, a sand pressing plate installed on the outer sides of the sand guiding columns and slidably connected with the sand guiding columns, a sand bearing disc installed in the sand guiding columns and slidably connected with the sand guiding columns, and a linear motion mechanism used for driving the sand bearing disc to move up and down. The sand pressing plate is provided with a plurality of pressing blocks capable of extending to the position above the sand bearing disc. The sand changing bin is compatible with more consumables, and the sand taking success rate and the sand tearing success rate are both high.

Description

TECHNICAL FIELD

[0001] The utility model relates to polishing equipment technical field, concretely relates to a kind of automatic sand changing platform. BACKGROUND

[0002] Automatic sand changing platform is the important device of and polishing robot completes the work of replacing sand paper, with the function of tearing old sand paper and pasting new sand paper.

[0003] CN109822436A discloses an automatic sand changing platform, comprising a base, a box, a dust cover, a sand paper sticking mechanism, a sand paper detection device, a sand paper tearing mechanism and a sand receiving box, the box is arranged on the base, the dust cover is hingedly connected to the top end of the box, the top end of the box is provided with a sand sticking mounting seat, the sand paper detection device and the sand paper sticking mechanism are arranged on the sand sticking mounting seat respectively, the top end of the front side plate of the box is provided with a sand tearing mounting seat, and the sand tearing mounting seat is located directly in front of the sand sticking mounting seat, the sand paper tearing mechanism is arranged on the sand tearing mounting seat, and the sand receiving box is detachably arranged on the front side of the sand tearing mounting seat.

[0004] The existing patent has the following problems:

[0005] 1. The sand paper tearing mechanism cannot adapt to thick sand paper;

[0006] 2. The sand paper in the sand paper library cannot be processed when dust and other impurities adhere to its surface;

[0007] 3. The surface of the sand paper in the sand paper library is uneven, and the sand changing success rate needs to be improved. INVENTION CONTENTS

[0008] To solve the above problems, the utility model provides an automatic sand changing platform.

[0009] The technical scheme adopted by the utility model is:

[0010] An automatic sand changing platform, comprising a rack, a sand changing library, a first sand tearing mechanism, a second sand tearing mechanism, a blowing mechanism and a detection mechanism arranged on the rack;

[0011] The sand changing library comprises a plurality of sand guiding columns arranged vertically on the upper surface of the rack platform, a sand pressing plate mounted on the outer side of the sand guiding columns and slidably connected with the sand guiding columns, a sand receiving disc mounted in the interior of the sand guiding columns and slidably connected with the sand guiding columns, and a linear motion mechanism for driving the sand receiving disc to move up and down, the sand pressing plate is provided with a plurality of pressing blocks capable of extending above the sand receiving disc;

[0012] The first sand tearing mechanism comprises a lower limiting plate fixed on the rack platform, an upper limiting plate fixed around the lower limiting plate, and a sand tearing plate fixed on the front side of the upper limiting plate, a gap is arranged between the bottom surface of the sand tearing plate and the top surface of the lower limiting plate, and a scraper is arranged on the side of the sand tearing plate facing the upper limiting plate;

[0013] The second sand tearing mechanism comprises a sand tearing support fixed on the rack platform and a pneumatic clamping jaw installed on the sand tearing support for clamping the waste sand paper;

[0014] The blowing mechanism is arranged on one side of the sand changing warehouse and is used for blowing compressed air to the surface of the sand paper.

[0015] The detection mechanism is used for detecting whether the robot successfully takes the sand paper.

[0016] Further, the blowing mechanism comprises a gas pipe installed on the rack platform, a gas nozzle connected with the outlet of the gas pipe and facing the sand changing warehouse, an adjusting valve used for adjusting the flow of the gas pipe, and an electromagnetic valve used for controlling the gas inlet and outlet of the gas pipe.

[0017] Further, the detection mechanism comprises a detection support fixedly installed on the rack platform, a vacuum suction cup arranged on the detection support, a pressure sensor used for detecting the vacuum degree in the vacuum suction cup, and a vacuum electromagnetic valve used for controlling the vacuum degree of the vacuum suction cup.

[0018] Further, the sand changing warehouse further comprises a limiting mechanism used for limiting the upward movement position of the sand holding disc; the limiting mechanism comprises a limiting seat fixed on the rack platform and a limiting block installed on the limiting seat, and the upper end of the limiting block is bent towards the center of the sand holding disc and is in contact with the upper surface of the sand pressing plate.

[0019] Further, the height of the limiting block is adjustable.

[0020] Further, the linear motion mechanism is a gas cylinder.

[0021] Further, the end of the pressing block facing the sand holding disc is provided with a sharp end which is overlapped on the upper surface of the sand paper.

[0022] Further, the rack is provided with a waste sand paper collecting box.

[0023] The beneficial effects of the utility model are as follows:

[0024] 1. The first sand tearing mechanism can tear the waste sand paper with small thickness, the second sand tearing mechanism can tear the sand paper with large thickness, and the double sand tearing mechanisms can be compatible with more consumables and improve the sand tearing success rate.

[0025] 2. The blowing mechanism can remove the dust and impurities on the surface of the sand paper and improve the sand taking success rate.

[0026] 3. The sand paper surface warping can be prevented by setting the sand pressing plate, and the sand taking success rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structure diagram of an automatic sand changing platform of the application.

[0028] Figure 2 It is a structure diagram of a second sand tearing mechanism of the application.

[0029] Figure 3 It is a structure diagram of a first sand tearing mechanism of the application.

[0030] Figure 4 It is a structure diagram of a sand pressing plate of the application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described clearly and completely in combination with the drawings and a preferred embodiment.

[0032] Referring to Figures 1-4 An automatic sand changing platform comprises a rack 1, a waste sand paper collecting box 3, a sand changing warehouse 10, a first sand tearing mechanism 20, a second sand tearing mechanism 30, a blowing mechanism 40 and a detection mechanism 50 arranged on the rack.

[0033] In the embodiment, the rack 1 is a rectangular frame structure, and a platform plate 2 is arranged on the top surface of the rack.

[0034] The sand changing warehouse 10 is arranged on one side of the platform plate 2, and the first sand tearing mechanism 20, the second sand tearing mechanism 30 and the detection mechanism 50 are arranged on the other side of the platform plate 2. The waste sand paper collecting box 3 is arranged below the platform plate 2 and is used for collecting the torn waste sand paper.

[0035] The sand changing warehouse 10 comprises six sand guiding columns 11 arranged vertically on the upper surface of the platform plate 2, a sand pressing plate 12 mounted on the outer side of the sand guiding columns 11 and in sliding connection with the sand guiding columns, a sand receiving disc 13 mounted on the inner side of the sand guiding columns 11 and in sliding connection with the sand guiding columns, a linear motion mechanism for driving the sand receiving disc 13 to move up and down, a limiting mechanism 14 for limiting the upward movement position of the sand receiving disc 13, and a plurality of pressing blocks 122 arranged on the sand pressing plate 12 and capable of extending above the sand receiving disc 13.

[0036] In the embodiment, 6 sand guide columns 11 are evenly distributed around the sand supporting disc 13 in a regular hexagon, and a sand pressing plate 12 in a regular hexagon is slidably sleeved outside the 6 sand guide columns 11. The sand pressing plate 12 is composed of two sand pressing plate bodies 121 in a regular hexagon, 3 triangular pressing blocks 122 and 3 L-shaped guide plates 123 connected together by screws. The 3 triangular pressing blocks 122 are clamped on three non-adjacent sides of the sand pressing plate body 121 respectively with the tips thereof facing the center of the sand pressing plate. The 3 L-shaped guide plates 123 are arranged at intervals with the 3 triangular pressing blocks 122, and one end of the L-shaped guide plate 123 extends vertically downward for guiding the movement of the sand paper. The linear motion mechanism is preferably a pneumatic cylinder which is installed above the platform plate 2. The pneumatic cylinder piston rod is connected with the sand supporting disc 13. The pneumatic cylinder is extended and retracted to drive the sand supporting disc 13 to move up and down linearly. The sand pressing plate 12 slides along the sand guide column 11 under the action of gravity. The tips of the 3 triangular pressing blocks 12 are always pressed on the upper surface of the uppermost layer of sand paper, thereby preventing the sand paper from warping.

[0037] The limiting mechanism 14 includes a limiting seat fixed on the machine frame platform and a limiting block installed on the limiting seat. The upper end of the limiting block is bent towards the center of the sand supporting disc to abut against the sand pressing plate 12 to form a limit. The lower end of the limiting block is provided with a sliding groove. The limiting block is connected with the limiting seat through a screw passing through the sliding groove. The height of the limiting block is adjusted through the screw to adapt to the limit of the sand supporting disc 13 carrying sand paper with different total thickness.

[0038] The air blowing mechanism 40 has two, which are symmetrically arranged outside the two sand changing warehouses 10. The air blowing mechanism 40 includes an air pipe 41 installed on the machine frame platform, an air nozzle 42 connected with the air pipe outlet and having a nozzle facing the sand changing warehouse 10, an adjusting valve 43 installed on the air pipe for adjusting the air flow of the air pipe, and an electromagnetic valve 44 installed below the platform plate 2 for controlling the air inlet and outlet of the air pipe. In the embodiment, the air nozzle 42 is in the shape of a duckbill and is provided with a plurality of air outlets arranged side by side.

[0039] The first sand tearing mechanism 20 includes a semicircular lower limiting plate 21 fixed on the machine frame platform, a U-shaped upper limiting plate 22 fixed around the lower limiting plate 21, and a rectangular sand tearing plate 23 fixed on the front side of the upper limiting plate 22. A space is provided between the bottom surface of the sand tearing plate 23 and the top surface of the lower limiting plate 21 for accommodating the torn waste sand paper. The side of the sand tearing plate 23 facing the upper limiting plate 22 is provided with a scraper 24, and the side of the scraper 24 facing the upper limiting plate 22 is provided with a tip.

[0040] The working principle of the first sand tearing mechanism 20 is that the polishing robot carries the waste sand paper to move horizontally towards the tip of the scraper 24. The tip of the scraper 24 is first inserted between the waste sand paper and the sand disc. With the horizontal movement of the robot, the waste sand paper is scraped off from the sand disc by the scraper 24.

[0041] The second sand tearing mechanism 30 comprises a sand tearing support 31 fixed on the rack platform and a pneumatic clamping jaw 32 installed on the sand tearing support 31 for clamping the waste sand paper.

[0042] The working principle of the second sand tearing mechanism 30 is that the polishing robot carries the waste sand paper to the second sand tearing mechanism 30, the pneumatic clamping jaw 32 is started to grab the waste sand paper, and the robot continues to move, and the waste sand paper is separated from the sand tray.

[0043] The detection mechanism 50 is arranged outside the second sand tearing mechanism 30 and is used for detecting whether the robot successfully takes the sand paper. The detection mechanism 50 comprises a detection support fixedly installed on the rack platform, a vacuum suction cup arranged on the detection support, a pressure sensor for detecting the vacuum degree in the vacuum suction cup, and a vacuum electromagnetic valve 51 for controlling the vacuum degree of the vacuum suction cup.

[0044] The working principle of the detection mechanism 50 is that when the robot carries the sand paper to the detection mechanism 50, the robot places the sand tray carrying the sand paper to the vacuum suction cup, the vacuum electromagnetic valve 51 controls the vacuum suction cup to be vacuumized, and the pressure sensor detects the vacuum degree in the vacuum suction cup. When there is sand paper sealing, the vacuum degree in the vacuum suction cup is higher, which proves that the robot has taken the sand paper; when there is no sand paper sealing, the vacuum suction cup leaks, the vacuum degree is lower, which proves that the robot has not taken the sand paper.

[0045] The working mode of the present application is:

[0046] When the sand paper needs to be replaced, the polishing robot carrying the waste sand paper first goes to the first sand tearing mechanism 20 or the second sand tearing mechanism 30 to tear the old sand paper, and then moves to the sand replacement warehouse 10, the cylinder lifts up the sand supporting tray 13, the robot takes the sand paper, moves to the detection mechanism 50 to detect whether the sand paper is taken, and then moves to the polishing work station to continue polishing work.

[0047] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also within the protection scope of the present application.

Claims

1. An automated sand changing platform, characterized by, The machine frame, the sand changing warehouse (10), the first sand tearing mechanism (20), the second sand tearing mechanism (30), the air blowing mechanism (40) and the detection mechanism (50) are arranged on the machine frame. The sand changing warehouse (10) comprises a plurality of sand guide columns (11) vertically arranged on the upper surface of the machine frame platform, a sand pressing plate (12) mounted on the outer side of the sand guide columns (11) and in sliding connection with the sand guide columns, a sand receiving disc (13) mounted in the inner side of the sand guide columns (11) and in sliding connection with the sand guide columns, and a linear motion mechanism for driving the sand receiving disc (13) to move up and down. The first sand tearing mechanism (20) comprises a lower limiting plate (21) fixed on the machine frame platform, an upper limiting plate (22) fixed around the lower limiting plate (21), and a sand tearing plate (23) fixed on the front side of the upper limiting plate (22). The second sand tearing mechanism (30) comprises a sand tearing support (31) fixed on the machine frame platform and a pneumatic clamping jaw (32) mounted on the sand tearing support (31) for clamping waste sand paper. The air blowing mechanism (40) is arranged on one side of the sand changing warehouse (10) and is used for blowing compressed air to the surface of the sand paper. The detection mechanism (50) is used for detecting whether the robot successfully takes the sand paper.

2. An automated sand changing platform according to claim 1, wherein, The air blowing mechanism (40) comprises an air pipe (41) mounted on the machine frame platform, an air nozzle (42) connected with the air pipe outlet and having a nozzle facing the sand changing warehouse (10), an adjusting valve (43) for adjusting the flow of the air pipe, and an electromagnetic valve (44) for controlling the air inlet and outlet of the air pipe.

3. An automated sand changing platform as claimed in claim 1, wherein, The detection mechanism (50) comprises a detection support fixedly mounted on the machine frame platform, a vacuum suction cup arranged on the detection support, a pressure sensor for detecting the vacuum degree in the vacuum suction cup, and a vacuum electromagnetic valve (51) for controlling the vacuum degree of the vacuum suction cup.

4. An automated sand changing platform as claimed in claim 1, wherein, The sand changing warehouse (10) further comprises a limiting mechanism (14) for limiting the upward movement position of the sand receiving disc (13).

5. An automated sand changing platform according to claim 4, wherein, The limiting mechanism comprises a limiting seat fixed on the machine frame platform and a limiting block mounted on the limiting seat, and the upper end of the limiting block is bent towards the center of the sand receiving disc and in contact with the upper surface of the sand pressing plate (12).

6. An automated sand changing platform as defined in claim 1, wherein, The height of the limiting block is adjustable.

7. An automated sand changing platform as claimed in claim 1, wherein, The linear motion mechanism is a pneumatic cylinder.

8. An automated sand changing platform as defined in claim 1, wherein, The end of the pressing block (122) facing the sand receiving disc (13) is provided with a sharp end which is overlapped on the upper surface of the sand paper. A waste sand paper collecting box (3) is arranged on the machine frame.

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