A polishing machine with a safety protection system

Abstract

This application relates to a polishing machine with a safety protection system, which relates to the field of polishing and grinding technology. The polishing machine comprises a workbench, a protective cover, and a drive mechanism. The workbench is provided with a polishing area, and a polishing mechanism is provided within the polishing area. The polishing mechanism is used to polish a workpiece, and the drive mechanism is used to drive the protective cover to move so that the protective cover is closed around the polishing area. This application improves the operational safety of the polishing machine during polishing operations and optimizes the protective effect.

Description

Technical Field

[0001] The present application relates to the technical field of polishing and grinding, and in particular to a polishing machine with a safety protection system. Background Art

[0002] Polishing machines, also known as grinders, are often used for mechanical grinding, polishing and waxing. Their working principle is: controlling the wool or sponge polishing disc to rotate at high speed relative to the surface of the workpiece. Due to the combined action of the polishing disc and the polishing agent and the friction with the surface to be polished, the paint surface pollution, oxide layer and shallow marks can be removed.

[0003] Existing polishing machines generally include a polishing piece, a workbench, a fixture set on the workbench, and a rotating piece for driving the fixture to rotate, wherein the polishing piece can be a polishing disk or polishing sheet for contacting the surface of the workpiece; during polishing, the workpiece is clamped by the fixture to position the workpiece at a specified position on the workbench, and then the rotating piece is started to drive the fixture to rotate, thereby realizing the rotation of the workpiece, and then the polishing piece is manually held and brought into contact with the surface of the workpiece rotating at high speed, thereby realizing the polishing operation on the workpiece surface.

[0004] Regarding the above-mentioned related technologies, the inventors found that when the workpiece is polished using the above-mentioned polishing machine, the debris separated from the workpiece due to the polishing piece contacting and grinding the workpiece surface will be splashed under the centrifugal action of the high-speed rotating workpiece. In serious cases, it will splash into the eyes of the construction workers, resulting in poor safety of the polishing operation. Summary of the Invention

[0005] In order to improve the safety of polishing operations and strengthen the protection capabilities of polishing operations, the present application provides a polishing machine with a safety protection system.

[0006] This application provides a polishing machine with a safety protection system, which adopts the following technical solutions:

[0007] A polishing machine with a safety protection system includes a workbench, a protective cover and a driving mechanism. A polishing area is provided on the workbench. A polishing mechanism is provided at a position on the workbench within the polishing area. The polishing mechanism is used to polish a workpiece. The driving mechanism is used to drive the protective cover to move so that the protective cover is closed around the periphery of the polishing area.

[0008] By adopting the above technical solution, before the workpiece is polished in the polishing area using the polishing mechanism, the protective cover can be moved in advance by the driving mechanism and covered around the outer periphery of the polishing area, so that the protective cover can be used for shielding during the polishing process, specifically for shielding flying debris, thereby improving the safety and protective effect of the polishing operation.

[0009] Preferably, the polishing mechanism includes a fixture, a rotating member and a polishing member, the fixture is rotatably connected to the workbench, the fixture is used to clamp or release the clamped workpiece, and the rotating member is used to drive the fixture to rotate; the driving mechanism includes a moving member, a cover position detector and a controller, the moving member is used to drive the protective cover to move, the cover position detector is electrically connected to the controller, and the rotating member is controlled by the controller;

[0010] The cover position detector is used to detect the position information of the protective cover relative to the polishing area. The controller is used to determine whether the protective cover is covered on the periphery of the polishing area based on the position information. The controller is also used to control the rotating part to drive the clamp to rotate when the protective cover is covered on the periphery of the polishing area, and to control the rotating part to stop the clamp from rotating when the protective cover is not covered on the periphery of the polishing area.

[0011] By adopting the above technical solution, the operator can hold the polishing piece and polish the workpiece that is clamped and rotated by the fixture; and the moving position of the protective cover can be automatically detected, and after the protective cover moves to cover the polishing area, the rotating piece can be automatically controlled to drive the rotation of the fixture, and then the rotation of the fixture can be stopped when the protective cover is not covered on the periphery of the polishing area, thereby realizing automatic control of the rotation of the fixture.

[0012] Preferably, the controller is further electrically connected to a clamping state detector, and the clamping state detector is used to detect whether the clamp is clamping the workpiece; the clamp and the moving part are controlled by the controller;

[0013] The controller is used to control the moving part to drive the protective cover to close to the periphery of the polishing area when the fixture holds the workpiece and the fixture does not rotate;

[0014] The controller is used to control the moving part to stop, control the rotating part to drive the fixture to rotate, and start timing when the protective cover is closed on the periphery of the polishing area;

[0015] The controller is also used to control the rotating part to stop rotating the clamp, control the moving part to drive the protective cover out of the polishing area, and control the clamp to release the clamped workpiece when a preset first condition or a preset second condition is met; wherein, the first condition refers to the timing time not reaching the specified time and the clamp does not clamp the workpiece within the timing time, and the second condition refers to the timing time reaching the specified time and the clamp always clamps the workpiece within the timing time.

[0016] By adopting the above technical solution, when the workpiece is clamped and polished by the fixture, the external force of polishing will cause the workpiece to detach from the fixture. Although the probability of detachment is low, once this happens, the protective cover can be used to block the detached workpiece to prevent the workpiece from causing harm to the operator. In addition, if the aforementioned workpiece detaches from the fixture during the rotational polishing process, the controller will control the fixture to stop rotating and make the protective cover detach from the polishing area to facilitate the operator to re-install the workpiece on the fixture, avoiding the fixture from idling and reducing the polishing efficiency of subsequent workpieces. If the workpiece is always clamped in the fixture during the rotational polishing process, then after the polishing is completed (that is, the rotation time of the fixture reaches the specified time), the controller will automatically control the fixture to stop rotating, release the clamping of the workpiece, and control the protective cover to detach from the polishing area to facilitate the operator to replace the workpiece.

[0017] Preferably, the workbench includes a support seat, the polishing area is located on the side wall of the support seat, the clamp is rotatably connected to the support seat, the side wall of the protective cover is provided with a clearance gap for the support seat to be inserted, and the inner wall of the clearance gap is in contact with the side wall of the support seat; the workbench located in the polishing area is provided with a chip discharge port, and there is at least one chip discharge port corresponding to the bottom of the position where the protective cover and the support seat are in contact with each other, and below the clamp; the workbench is also provided with a cleaning component near the chip discharge port, and the cleaning component is used to discharge debris on the workbench into the chip discharge port.

[0018] By adopting the above technical solution, since the workpiece is bound to generate debris during the polishing process, the protective cover and the upper surface of the workbench jointly block the scattered debris, that is, the debris will be retained on the inner wall of the protective cover and / or the upper surface of the workbench, and the present application stipulates that the inner wall of the clearance gap of the protective cover is in contact with the side wall of the support seat. Therefore, when the protective cover is driven by the driving mechanism to cover or detach the polishing area, since the polishing area is located on the side wall of the support seat, the protective cover is bound to slide relative to the support seat. Therefore, in the process of the protective cover sliding relative to the support seat, the side wall of the support seat will scrape the inner wall of the clearance gap of the protective cover, thereby scraping off the debris retained on the inner wall of the clearance gap, thereby cleaning the inner wall of the protective cover, and since a chip discharge port is provided below the position where the protective cover and the support seat are in contact with each other, the scraped debris will directly fall into the chip discharge port, and the debris near the fixture can also be discharged into the chip discharge port by the cleaning component after falling onto the workbench.

[0019] Preferably, the cleaning assembly includes a cleaning rod and a docking piece, the cleaning rod is located below the clamp, and one end of the cleaning rod is attached to the upper surface of the workbench near the chip removal port, the docking piece is used to drive the cleaning rod to slide back and forth and is connected to the upper surface of the workbench, and the chip removal port is located on the sliding path of the cleaning rod.

[0020] By adopting the above technical solution, the cleaning rod is driven to slide back and forth on the upper surface of the workbench through the docking piece, thereby scraping the upper surface of the workbench. Since the chip discharge port is located on the sliding path of the cleaning rod, the cleaning rod can push the debris into the chip discharge port during the sliding process.

[0021] Preferably, the docking part includes a docking cylinder, a docking plate and a gear set; the driving end of the docking cylinder is connected to the docking plate, and the docking plate is slidably connected to the support seat. One end of the cleaning rod is rotatably connected to the docking plate, and the other end is attached to the upper surface of the workbench near the chip removal port, and the gear set is used to drive the cleaning support rod to rotate when the docking plate slides.

[0022] By adopting the above technical solution, the docking cylinder drives the docking plate and the cleaning rod to slide back and forth, so that the cleaning rod scrapes the upper surface of the workbench back and forth. During this process, the cleaning support rod can be driven to rotate by the gear set, so that the cleaning support rod rotates while scraping the workbench, reducing the amount of debris retained on the peripheral wall of the cleaning rod.

[0023] Preferably, the gear set includes a docking rack and a docking gear, the docking rack passes through the docking plate along the sliding direction of the docking plate, and the docking plate is sleeved on the docking rack; the docking gear is rotatably connected to the docking plate, and the docking gear is meshed with the docking rack, and the end of the cleaning rod is connected to the end wall at the center periphery of the docking gear; a vibration plate is provided on the surface of the workbench near the chip discharge port, and a telescopic part is provided between the vibration plate and the surface of the workbench, and the end of the cleaning rod away from the docking gear is always against the surface of the vibration plate.

[0024] By adopting the above technical solution, during the sliding of the docking plate relative to the docking rack, the docking gear will rotate so that the cleaning rod will make a circular motion with the docking gear as the center. Since the cleaning rod is always in contact with the upper surface of the vibration plate, during the circular motion of the cleaning rod, the vibration plate will move toward or away from the workbench under the pressure of the cleaning rod and the giving way of the telescopic part, thereby achieving shaking, reducing the adhesion of debris to the upper surface of the vibration plate, and optimizing the cleaning effect of the debris.

[0025] Preferably, a plurality of telescopic members are provided, and all of the telescopic members are arranged in sequence along the sliding direction of the cleaning support rod. The telescopic members are hinged to the vibration plate, and the telescopic amount of the telescopic members gradually increases towards the chip discharge port.

[0026] By adopting the above technical solution, the telescopic amounts of the telescopic parts at different positions are limited to be different, and the closer to the chip discharge port, the greater the telescopic amount. This limitation allows the vibration plate to both shake and tilt, and the closer to the chip discharge port the vibration plate is, the greater the tilt angle it can have, and the tilted vibration plate can further promote the discharge of debris on the vibration plate.

[0027] Preferably, a cavity is provided inside the support base, the rotating member is located in the cavity, a dredging hole is provided on the side wall of the support base near the joint between the support base and the protective cover, and the dredging hole is communicated with the cavity; a docking turntable is provided at the driving end of the rotating member, the rotating member is further used to drive the docking turntable to rotate, and a first protrusion is provided on the side wall of the docking turntable;

[0028] The inner wall of the cavity is slidably connected to a slide plate, which is fitted to the inner wall of the cavity. The side wall of the slide plate is provided with a second protrusion, which is located on the rotation path of the first protrusion. The ends of the first protrusion and the second protrusion are both provided with a yielding arc surface; a reset member is provided between the slide plate and the inner wall of the cavity to drive the slide plate to move toward the direction close to the docking turntable.

[0029] By adopting the above technical solution, while the rotating member drives the clamp to rotate, the docking turntable will also rotate, thereby causing the first protrusion to rotate together with the docking turntable. When the first protrusion rotates to the vicinity of the second protrusion, it will push the second protrusion to cause the slide plate to move in the direction away from the docking turntable, thereby causing the air inside the cavity near the dredging hole to be pushed out of the cavity and discharged from the dredging hole. The dredging hole is located at the joint between the support seat and the protective cover. Therefore, the discharged air will be able to blow away some debris retained on the protective cover. When the first protrusion releases its contact with the second protrusion, the reset member will drive the slide plate to move back in the direction close to the docking turntable to achieve reset.

[0030] Preferably, the side wall of the support seat near the rotating part and the side wall of the protective cover are provided with heat dissipation holes, the heat dissipation holes are connected to the cavity, the inner wall of the heat dissipation holes on the support seat is provided with a dust screen, the end wall of the slide plate facing the heat dissipation holes is provided with a brush, and the dust screen is located on the sliding path of the brush.

[0031] By adopting the above technical solution, when the protective cover moves to the periphery of the polishing area, the heat dissipation holes on the support seat will coincide with the heat dissipation holes on the protective cover, thereby realizing heat dissipation of the rotating parts during the working process. At the same time, the skateboard that moves back and forth in the cavity will have the brush on its end wall scrape and clear the dust screen during the movement, thereby avoiding clogging of the dust screen and optimizing the heat dissipation effect.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] Before the workpiece is polished in the polishing area using the polishing mechanism, the protective cover can be moved and closed around the periphery of the polishing area by the driving mechanism in advance, so that the protective cover can be used to shield the workpiece during the polishing process. Specifically, it can be used to shield the debris generated during the polishing process, and it can also be used to shield the workpiece from falling off the fixture, thereby improving the safety and protection effect of the polishing operation.

[0034] The setting of the cover position detector and controller can be used to automatically monitor the moving position of the protective cover. When the protective cover is closed on the periphery of the polishing area, the controller will automatically control the rotation of the fixture. After polishing is completed, the controller can also be used to automatically control the fixture to release the clamping of the workpiece, and push the polished workpiece away from the fixture, while driving the protective cover out of the periphery of the polishing area. In addition, the present application can also automatically detect the clamping state of the workpiece by the fixture during the polishing process. If the workpiece is detached from the fixture, the controller will immediately control the fixture to stop rotating, and control the fixture to release the clamping, and at the same time control the protective cover to move out of the polishing area, so that the operator can reinsert the detached workpiece into the fixture and perform subsequent polishing operations again. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural diagram of a polishing machine with a safety protection system in Example 1 of the present application.

[0036] Figure 2 yes Figure 1 Cross-sectional view along the AA axis.

[0037] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point a.

[0038] Figure 4 This is a structural block diagram of a polishing machine with a safety protection system in Example 1 of the present application.

[0039] Figure 5 This is a schematic diagram of the polishing process of a polishing machine with a safety protection system in Example 1 of the present application.

[0040] Figure 6 It is a structural diagram used to embody a polishing machine with a safety protection system in Example 2 of the present application.

[0041] Figure 7 It is a cross-sectional view used to illustrate the structure of the cleaning component in Example 2.

[0042] Figure 8 yes Figure 6 Cross-sectional view along the BB direction.

[0043] Figure 9 This is a structural diagram of a polishing machine with a safety protection system in Example 3 of the present application.

[0044] Figure 10 yes Figure 9 Cross-sectional view along CC direction.

[0045] Figure 11 It is a cross-sectional view from a top view used to illustrate the internal structure of the cavity of the support base in Example 3.

[0046] Explanation of reference numerals: 1. workbench; 11. support base; 111. heat dissipation hole; 112. dust screen; 113. cavity; 1131. first chamber; 1132. second chamber; 114. dredging hole; 12. polishing area; 13. chip removal port; 2. polishing mechanism; 21. fixture; 211. support tube; 212. unloading cylinder; 213. base; 2131. insertion port; 214. clamp; 215. pressing block; 216. pressing member; 22. rotating member; 3. protective cover; 31. clearance gap; 4. driving mechanism; 41. moving member; 411. driving gear; 412. driving rack; 413. Driving motor; 414, guide rod; 415, limit baffle; 42, cover position detector; 43, controller; 431, rotation timing module; 432, movement judgment module; 433, instruction execution module; 44, clamping state detector; 5, cleaning assembly; 51, cleaning rod; 52, docking part; 521, docking cylinder; 522, docking plate; 523, gear set; 5231, docking rack; 5232, docking gear; 6, vibration plate; 7, telescopic part; 8, slide plate; 81, second protrusion; 83, reset part; 84, corrugated telescopic cover; 85, brush; 9, docking turntable; 91, first protrusion. Implementation Method

[0047] The following is combined with Figure 1-11 This application is described in further detail. Example

[0048] This application discloses a polishing machine with a safety protection system, referring to Figure 1 and Figure 2 The present invention includes a workbench 1 having a polishing area 12 disposed thereon. A polishing mechanism 2 is disposed within the polishing area 12 and is used to polish a workpiece within the polishing area 12. The workbench 1 is also provided with a protective cover 3 and a driving mechanism 4. The driving mechanism 4 is used to control the movement of the protective cover 3 toward or away from the polishing area 12, so that when the protective cover 3 moves toward the polishing area 12, it covers the periphery of the polishing area 12 to provide protection.

[0049] Reference Figure 1 and Figure 2 The polishing mechanism 2 includes a clamp 21, a rotating part 22 and a polishing part; the clamp 21 is used to clamp or release the workpiece, the clamp 21 is rotatably connected to the workbench 1, and the rotating part 22 is used to drive the clamp 21 to rotate. The polishing part can be a polishing sheet or a polishing sheet (the polishing sheet is a prior art and is not reflected in detail in the text and drawings of this application). The operator can hold the polishing piece to polish the workpiece clamped by the rotating clamp 21.

[0050] Reference Figure 2 and Figure 3 The rotating member 22 is specifically a motor, and the rotating member 22 is embedded in the inner wall of the workbench 1. The clamp 21 includes a support tube 211, a discharge cylinder 212, a base 213, and a plurality of clamps 214, a tightening block 215, and a tightening member 216. The support tube 211 is rotatably connected to the interior of the workbench 1, and the end wall of the support tube 211 is welded to the driving end of the rotating member 22. The other end of the support tube 211 passes through the workbench 1 and is welded to the base 213. A material insertion port 2131 is formed in the center of the base 213. The clamps 214 are symmetrically slidably connected to the base 213 with the material insertion port 2131 as the center. The clamps 214 are fixed to their sliding position on the base 213 by bolts. The abutting blocks 215, the clamping plates 214, and the abutting members 216 are arranged in a one-to-one correspondence, with the abutting blocks 215 inserted into the end walls of the corresponding clamping plates 214, and the abutting members 216 embedded in the clamping plates 214. The abutting members 216 can be specifically micro-cylinders, and the driving ends of the abutting members 216 are welded to the side walls of the corresponding abutting blocks 215 to control the abutting blocks 215 to extend out of the clamping plates 214. The discharge cylinder 212 is inserted into the support tube 211, and the insertion port 2131 is located on the telescopic path of the driving end of the discharge cylinder 212 to eject the workpiece from the base 213.

[0051] When using the clamp 21 to clamp the workpiece, all the clamps 214 can be slid to the specified position relative to the base 213 according to the size of the workpiece, and then the workpiece can be inserted between all the clamps 214, and finally the clamping block 215 is extended through the clamping member 216, so that all the clamping members 216 abut against the surface of the workpiece to achieve clamping of the workpiece. In order to keep the clamping block 215 abutting against the workpiece, an external electrical device can be used to control the micro-cylinder drive end to stop retracting after extending the maximum stroke. The technology of limiting the micro-cylinder drive end to stop retracting is an existing technology and will not be repeated here.

[0052] Reference Figure 1 The protective cover 3 is slidably connected to the workbench 1, and the polishing area 12 is located on the sliding path of the protective cover 3; the driving mechanism 4 specifically includes a moving part 41 for driving the protective cover 3 to slide, and the moving part 41 includes a driving gear 411, a driving rack 412, a driving motor 413, a guide rod 414 and a limit baffle 415.

[0053] Reference Figure 1The drive rack 412 is welded to the side wall of the protective cover 3, the drive gear 411 is meshed and connected to the drive rack 412, and the drive gear 411 is rotatably connected to the workbench 1. The drive motor 413 is installed on the workbench 1, and the drive end of the drive motor 413 is fixedly inserted into the rotation center of the drive gear 411. There are two guide rods 414, which are symmetrically distributed on both sides of the protective cover 3. The guide rods 414 are fixedly connected to the upper surface of the workbench 1, and the length direction of the guide rods 414 is parallel to the length direction of the drive rack 412. The limit baffle 415 is fixedly sleeved on one end of the guide rods 414 near the polishing area 12, and the side wall of the protective cover 3 is movably sleeved on the guide rods 414; so that the protective cover 3 can slide along the length direction of the guide rods 414 under the rotation of the drive gear 411 and the guidance of the guide rods 414, so as to achieve the cover closing or detaching from the periphery of the polishing area 12. In another embodiment, the driving mechanism 4 can also be a combination structure of a motor and a screw, by rotating the screw to connect to the upper surface of the workbench 1, and making the length direction of the screw parallel to the moving direction of the protective cover, and then threading the protective cover 3 onto the outside of the screw, thereby realizing the reciprocating sliding of the protective cover 3 along the length direction of the screw.

[0054] Reference Figure 1 、 Figure 3 and Figure 4 The driving mechanism 4 further includes a cover position detector 42 and a controller 43. The cover position detector 42 is used to detect the position information of the protective cover 3 relative to the polishing area 12 and send the position information to the controller 43. Specifically, the cover position detector 42 can be a distance measuring sensor embedded in the side wall of the limit stopper 415 to detect the distance between the socket part of the protective cover 3 and the guide rod 414 and the limit stopper 415. The distance value is the aforementioned position information.

[0055] Reference Figure 1 、 Figure 3 and Figure 4 The controller 43 can specifically be a PLC controller, and the cover position detector 42 is electrically connected to the controller 43, so that the controller 43 obtains the position information detected by the cover position detector 42; the moving part 41, the rotating part 22, the tightening part 216, and the unloading cylinder 212 of the clamp 21 are all controlled by the controller 43, so as to realize the rotation control of the clamp 21, the control of the clamp 21 clamping or releasing the workpiece, and the movement control of the protective cover 3 through the controller 43.

[0056] Reference Figure 1 、 Figure 3 and Figure 4The controller 43 is also electrically connected to a clamping state detector 44. The clamping state detector 44 can be a through-beam photoelectric switch embedded in the insertion port 2131 to detect whether the workpiece is inserted between the clamps 214 and send the detection situation to the controller 43; specifically, if the receiving end of the through-beam photoelectric switch can receive the light emitted by the transmitting end, it means that the workpiece is not inserted between the clamps 214. On the contrary, if the workpiece is inserted between the clamps 214, the light of the through-beam photoelectric switch will be blocked by the workpiece.

[0057] Reference Figure 1 、 Figure 4 and Figure 5 The controller 43 specifically includes a rotation timing module 431, a movement judgment module 432 and an instruction execution module 433; the movement judgment module 432 is used to obtain the detection status of the clamping state detector 44, obtain the opening and closing information of the rotating part 22, and obtain the position information detected by the cover position detector 42.

[0058] The movement determination module 432 is used to control the abutting member 216 to start clamping the workpiece and determine the current clamping state as "clamping" when the clamping state detector 44 detects the workpiece;

[0059] The movement determination module 432 is further configured to send a cover-close movement instruction to the instruction execution module 433 when the clamp 21 is holding a workpiece (i.e., the clamping state is "clamped") and the clamp 21 is not rotating. This instructs the instruction execution module 433 to control the moving member 41 to move the protective cover 3 toward the polishing area 12 so as to close around the periphery of the polishing area 12. The movement determination module 432 can determine whether the clamp 21 is rotating by detecting the power supply state of the rotating member 22.

[0060] The movement determination module 432 is further configured to send a rotation control instruction to the instruction execution module 433 based on the position information detected by the cover position detector 42 when the protective cover 3 is closed around the polishing area 12, so that the instruction execution module 433 controls the moving member 41 to stop and the rotating member 22 to rotate the fixture 21; and to send a timing instruction to the rotation timing module 431 so that the rotation timing module 431 starts timing. The rotation timing module 431 can specifically be a timer that records the rotation duration of the fixture 21.

[0061] The movement judgment module 432 is further configured to transmit an execution instruction to the instruction execution module 433 when the preset first condition or the preset second condition is met, so that the instruction execution module 433 controls the rotating member 22 to stop rotating the clamp 21, controls the moving member 41 to drive the protective cover 3 to separate from the polishing area 12, and controls the pressing member 216 and the unloading cylinder 212 (refer to Figure 3 ) is started to release the workpiece and push the workpiece away from the clamp 21.

[0062] Among them, the first condition means: the timing time has not reached the specified time, and the fixture 21 does not clamp the workpiece within the timing time; the aforementioned specified time refers to the total rotation time of the fixture 21 when the polishing operation is completed; and the situation described by the first condition is: before the polishing operation is completed, the workpiece detaches from the fixture 21 midway. At this time, it is necessary to pause polishing, pause the rotation of the fixture 21, and withdraw the protective cover 3 from the polishing area 12 so that the operator can reinsert the detached workpiece into the insertion port 2131.

[0063] The second condition is that the fixture 21 remains clamped to the workpiece until the timer reaches a specified duration. The first condition describes a situation where the workpiece remains clamped to the fixture 21 throughout the polishing process until the polishing operation is completed. In this case, only when the timer reaches the specified duration, i.e., when polishing is complete, does the fixture 21 stop rotating, ejecting the polished workpiece through the fixture 21, and moving the protective cover 3 away from the polishing area 12, allowing the operator to replace the next workpiece. This achieves automatic control of workpiece clamping, fixture 21 rotation, protective cover 3 movement, and workpiece ejection throughout the polishing process.

[0064] The implementation principle of the polishing machine safety protection system disclosed in Example 1 of the present application is as follows: according to the size of the workpiece to be polished, all the clamping plates 214 are moved and fixed relative to the base 213 in advance, so that when the abutting blocks 215 on the moved clamping plates 214 are extended, the workpiece can be abutted by all the abutting blocks 215 to achieve clamping; then the workpiece is inserted between the clamping plates 214, and the end of the workpiece is inserted into the insertion port 2131. At this time, the clamping state detector 44 located in the insertion port 2131 detects the workpiece, and the controller 43 controls the abutting member 216 to start and make the abutting block 215 abut against the workpiece to achieve clamping; at this time, the controller 43 determines the clamping state as "clamped", and since the rotating member 22 is not started at this time, that is, the clamp 21 is not rotating, the controller 43 controls the protective cover 3 to move in the direction close to the polishing area 12;

[0065] When the cover position detector 42 detects that the protective cover 3 is closed around the polishing area 12, the controller 43 will control the moving part 41 to stop moving, control the rotating part 22 to drive the clamp 21 to start rotating, and start timing; during the timing process, the controller 43 will determine in real time whether the workpiece is clamped by the clamp 21. If the timing time does not reach the specified time, and the workpiece is separated from the clamp 21, the controller 43 will control the clamp 21 to stop rotating, control the clamp 21 to release the clamp (i.e., retract the pressing block 215), and control the unloading air The driving end of the cylinder 212 extends and then retracts), and controls the protective cover 3 to move away from the polishing area 12, so that the operator can reinsert the detached workpiece into the insertion port 2131 and resume the polishing operation; and if the workpiece is always clamped in the fixture 21, until the timing reaches the specified time, the controller 43 will control the fixture 21 to stop rotating, control the fixture 21 to release the clamping, and control the protective cover 3 to move away from the polishing area 12, so that the operator can remove the polished workpiece and replace it with the next workpiece to be polished. Example

[0066] Since the workpiece is prone to produce debris during the polishing process, the difference between Example 2 of the present application and Example 1 is that the debris can be cleaned. Figure 6 The workbench 1 includes a support seat 11, the polishing area 12 is located on the side wall of the support seat 11, the rotating part 22 is embedded in the support seat 11, and the side wall of the protective cover 3 is provided with a clearance gap 31 for the support seat 11 to be inserted. When the protective cover 3 moves and allows the support seat 11 to be inserted into the clearance gap 31, the peripheral wall of the support seat 11 will fit into the inner wall of the clearance gap 31.

[0067] Reference Figure 6 A chip removal opening 13 is provided on the upper surface of the workbench 1 below the support seat 11, and the number of chip removal openings 13 in the embodiment of the present application is 3. There is a chip removal opening 13 below the position where the protective cover 3 and the support seat 11 are in contact with each other, and below the clamp 21, respectively, to receive the debris of the protective cover 3 scraped off by the support seat 11, and the debris falling from the clamp 21. A box for receiving the fallen debris can be placed below the workbench 1 near the chip removal opening 13.

[0068] Reference Figure 6 and Figure 7 A cleaning assembly 5 is also provided on the workbench 1. The cleaning assembly 5 includes a cleaning rod 51 and a docking member 52. The docking member 52 includes a docking cylinder 521, a docking plate 522 and a gear set 523. The gear set 523 includes a docking rack 5231 and a docking gear 5232.

[0069] Reference Figure 6 and Figure 7The docking cylinder 521 is fixedly mounted on the support base 11. A clearance hole for the docking cylinder 521 is provided through the side wall of the protective cover 3 to prevent the docking cylinder 521 from obstructing the reciprocating movement of the protective cover 3 relative to the support base 11. The driving end of the docking cylinder 521 is welded to the docking plate 522, which is slidably connected to the inside of the support base 11. The docking rack 5231 is embedded in the support base 11, and the docking plate 522 is sleeved on the outside of the docking rack 5231. The docking cylinder 521 can drive the docking plate 522 to slide back and forth along the length direction of the docking rack 5231.

[0070] Reference Figure 6 and Figure 7 The docking gear 5232 is rotatably connected to the docking plate 522 and meshingly connected to the docking rack 5231. One end of the cleaning rod 51 is welded to the end wall of the docking gear 5232, and the welding position is located outside the rotation center of the docking gear 5232. The end of the cleaning rod 51 away from the docking gear 5232 is located above the workbench 1, and the distribution direction of the chip removal opening 13 is parallel to the direction of movement of the cleaning rod 51 with the docking plate 522.

[0071] Reference Figure 6 、 Figure 7 and Figure 8 , a number of telescopic parts 7 are provided on the upper surface of the workbench 1, and the telescopic parts 7 are specifically telescopic sleeves with springs. The end of the telescopic parts 7 away from the workbench 1 is hinged with a vibration plate 6, and the telescopic stroke of the telescopic parts 7 gradually increases in the direction close to the chip discharge port 13. The telescopic stroke can be specifically expressed as the telescopic stroke of the spring, that is, the closer the telescopic parts 7 are to the chip discharge port 13, the greater the degree of telescopic deformation, so that the vibration plate 6 can not only move up and down under the drive of the telescopic parts 7, but also tilt toward the chip discharge port 13, so as to facilitate guiding the chips on the vibration plate 6 to fall into the chip discharge port 13.

[0072] Reference Figure 6 、 Figure 7 and Figure 8 , the end of the cleaning rod 51 away from the docking gear 5232 is always in contact with the upper surface of the vibration plate 6. Specifically, when the cleaning rod 51 makes a circular motion with the docking gear 5232 as the center and moves to the top of the circular trajectory (i.e., Figure 8 As shown in the figure, the telescopic member 7 is in an undeformed state, and the cleaning rod 51 is in contact with the upper surface of the vibration plate 6; and when the cleaning rod 51 moves downward along the circular trajectory, the cleaning rod 51 will slide and press against the vibration plate 6, so that the telescopic member 7 contracts and deforms, and the vibration plate 6 will shake and tilt as the cleaning rod 51 moves, so as to guide the debris on the vibration plate 6 to fall into the chip discharge port 13. Example

[0073] The difference between Example 3 of the present application and Example 2 is that: Figure 9 、 Figure 10 and Figure 11 A cavity 113 is provided in the support seat 11, and the rotating member 22 and the support tube 211 are both located in the cavity 113. A slide plate 8 is slidably connected in the cavity 113, and the peripheral wall of the slide plate 8 is in contact with the inner wall of the cavity 113. A reset member 83 is provided between the slide plate 8 and the inner wall of the cavity 113. The reset member 83 can be specifically a spring, and the expansion and contraction direction of the spring is the sliding direction of the slide plate 8. A through hole is provided in the middle of the skateboard 8 for the support tube 211 to pass through, and a corrugated telescopic cover 84 is provided on the side wall of the skateboard 8 near the through hole. The other end of the corrugated telescopic cover 84 is fixedly bonded to the inner wall of one end of the cavity 113 near the splint 214, so that the cavity 113 is divided into a first chamber 1131 and a second chamber 1132 by the skateboard 8 and the corrugated telescopic cover 84; a dredging hole 114 is provided on the side wall of the support seat 11 along its circumference, and the dredging hole 114 is facing the position where the support seat 11 and the protective cover 3 are in contact with each other, that is, the joint, and the dredging hole 114 is connected to the first chamber 1131.

[0074] Reference Figure 9 、 Figure 10 and Figure 11 The support tube 211 in the second chamber 1132 is fixedly sleeved with a docking turntable 9. The side wall of the docking turntable 9 facing the slide 8 is integrally formed with a plurality of first protrusions 91. The first protrusions 91 are evenly arranged along the circumference of the docking turntable 9. The side wall of the slide 8 facing the docking turntable 9 is integrally formed with a second protrusion 81. The ends of the first protrusions 91 and the second protrusions 81 are both provided with a yielding arc surface. The time taken for adjacent first protrusions 91 to rotate in sequence to abut against the second protrusions 81 is exactly equal to the time taken for the slide 8 to make a reciprocating movement in sequence. When the reset member 83 is not deformed, the second protrusion 81 is located on the rotation path of the first protrusion 91, that is, the first protrusion 91 will abut against the second protrusion 81 during the process, so that the second protrusion 81 and the slide 8 move away from the first protrusion 91, thereby causing part of the gas in the first chamber 1131 to be pushed out through the dredging hole 114 and blown onto the inner wall of the protective cover 3, thereby blowing away some of the debris splashed on the inner wall of the protective cover 3.

[0075] Reference Figure 7 、 Figure 8 and Figure 9 The support seat 11 and the side walls of the protective cover 3 are both provided with heat dissipation holes 111, which are connected to the second chamber 1132. A dust screen 112 is welded on the inner wall of the heat dissipation hole 111 on the support seat 11, and a brush 85 is glued to the side wall of the skateboard 8 near the second chamber 1132. The dust screen 112 is located on the sliding path of the brush 85 to scrape the dust screen 112 during the sliding process of the skateboard 8, thereby clearing the dust screen 112 and optimizing the heat dissipation effect of the heat dissipation hole 111 on the rotating part 22.

[0076] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A polishing machine with a safety protection system, characterized in that: The invention comprises a workbench (1), a protective cover (3) and a driving mechanism (4); the workbench (1) is provided with a polishing area (12); the workbench (1) is provided with a polishing mechanism (2) at a position within the polishing area (12); the polishing mechanism (2) is used for polishing a workpiece; and the driving mechanism (4) is used for driving the protective cover (3) to move so that the protective cover (3) covers the periphery of the polishing area (12); The workbench (1) located in the polishing area (12) is provided with a chip removal opening (13), and the workbench (1) is also provided with a cleaning assembly (5) near the chip removal opening (13); the cleaning assembly (5) includes a cleaning rod (51) and a docking member (52); the docking member (52) includes a docking cylinder (521), a docking plate (522) and a gear set (523); the driving end of the docking cylinder (521) is connected to the docking plate (522); the gear set (523) includes a docking rack (5231) and a docking gear (5232), and the docking rack (5231) slides along the docking plate (522) in the direction of rotation. The docking plate (522) is penetrated, and the docking plate (522) is sleeved on the docking rack (5231); the docking gear (5232) is rotatably connected to the docking plate (522), and the docking gear (5232) is meshed with the docking rack (5231); the end wall of the cleaning rod (51) is connected to the end wall at the center periphery of the docking gear (5232); the surface of the workbench (1) near the chip discharge port (13) is provided with a vibration plate (6), and a telescopic member (7) is provided between the vibration plate (6) and the surface of the workbench (1); the end of the cleaning rod (51) away from the docking gear (5232) always contacts the surface of the vibration plate (6).

2. The polishing machine with a safety protection system according to claim 1, characterized in that: The polishing mechanism (2) comprises a clamp (21), a rotating member (22) and a polishing member, wherein the clamp (21) is rotatably connected to the workbench (1), the clamp (21) is used to clamp or release a workpiece, and the rotating member (22) is used to drive the clamp (21) to rotate; the driving mechanism (4) comprises a moving member (41), a cover position detector (42) and a controller (43), the moving member (41) is used to drive the protective cover (3) to move, the cover position detector (42) is electrically connected to the controller (43), and the rotating member (22) is controlled by the controller (43); The cover position detector (42) is used to detect the position information of the protective cover (3) relative to the polishing area (12); the controller (43) is used to determine whether the protective cover (3) is covered on the periphery of the polishing area (12) based on the position information; the controller (43) is further used to control the rotating member (22) to drive the clamp (21) to rotate when the protective cover (3) is covered on the periphery of the polishing area (12); and to control the rotating member (22) to stop the clamp (21) from rotating when the protective cover (3) is not covered on the periphery of the polishing area (12).

3. The polishing machine with a safety protection system according to claim 2, characterized in that: The controller (43) is also electrically connected to a clamping state detector (44), and the clamping state detector (44) is used to detect whether the clamp (21) clamps the workpiece; the clamp (21) and the moving part (41) are controlled by the controller (43); The controller (43) is used to control the moving part (41) to drive the protective cover (3) to cover the periphery of the polishing area (12) when the clamp (21) clamps the workpiece and the clamp (21) does not rotate; The controller (43) is used to control the moving part (41) to stop, control the rotating part (22) to drive the clamp (21) to rotate, and start timing when the protective cover (3) is closed on the periphery of the polishing area (12); The controller (43) is also used to control the rotating member (22) to stop rotating the clamp (21), control the moving member (41) to drive the protective cover (3) to leave the polishing area (12), and control the clamp (21) to release the workpiece when a preset first condition or a preset second condition is met; wherein, the first condition refers to the fact that the timing time does not reach the specified time and the clamp (21) does not clamp the workpiece within the timing time, and the second condition refers to the fact that the timing time reaches the specified time and the clamp (21) always clamps the workpiece within the timing time.

4. The polishing machine with a safety protection system according to claim 2, characterized in that: The workbench (1) includes a support seat (11), the polishing area (12) is located on the side wall of the support seat (11), the clamp (21) is rotatably connected to the support seat (11), and the side wall of the protective cover (3) is provided with a clearance gap (31) for the support seat (11) to be inserted, and the inner wall of the clearance gap (31) is in contact with the side wall of the support seat (11); and there is at least one chip removal opening (13) corresponding to the bottom of the position where the protective cover (3) and the support seat (11) are in contact with each other, and the bottom of the clamp (21).

5. The polishing machine with a safety protection system according to claim 4, characterized in that: The cleaning rod (51) is located below the clamp (21), and one end of the cleaning rod (51) is attached to the upper surface of the workbench (1) near the chip removal opening (13). The docking member (52) is used to drive the cleaning rod (51) to slide back and forth and is connected to the upper surface of the workbench (1), and the chip removal opening (13) is located on the sliding path of the cleaning rod (51).

6. The polishing machine with a safety protection system according to claim 5, characterized in that: The docking plate (522) is slidably connected to the support seat (11), one end of the cleaning rod (51) is rotatably connected to the docking plate (522), and the other end is attached to the upper surface of the workbench (1) near the chip discharge port (13), and the gear set (523) is used to drive the cleaning rod (51) to rotate when the docking plate (522) slides.

7. The polishing machine with a safety protection system according to claim 6, characterized in that: A plurality of telescopic members (7) are provided, and all of the telescopic members (7) are arranged in sequence along the sliding direction of the cleaning support rod (511). The telescopic members (7) are hinged to the vibration plate (6), and the telescopic amount of the telescopic members (7) gradually increases toward the direction approaching the chip discharge port (13).

8. The polishing machine with a safety protection system according to claim 4, characterized in that: A cavity (113) is provided inside the support seat (11), the rotating member (22) is located in the cavity (113), a dredging hole (114) is provided on the side wall of the support seat (11) near the joint between the support seat (11) and the protective cover (3), and the dredging hole (114) is communicated with the cavity (113); a docking turntable (9) is provided at the driving end of the rotating member (22), and the rotating member (22) is also used to drive the docking turntable (9) to rotate, and a first protrusion (91) is provided on the side wall of the docking turntable (9); The inner wall of the cavity (113) is slidably connected to a slide plate (8), and the slide plate (8) is attached to the inner wall of the cavity (113). The side wall of the slide plate (8) is provided with a second protrusion (81), and the second protrusion (81) is located on the rotation path of the first protrusion (91). The ends of the first protrusion (91) and the second protrusion (81) are both provided with a yielding arc surface; a reset member (83) is provided between the slide plate (8) and the inner wall of the cavity (113) for driving the slide plate (8) to move toward the direction close to the docking turntable (9).

9. The polishing machine with a safety protection system according to claim 8, characterized in that: The side wall of the support seat (11) and the side wall of the protective cover (3) are both provided with heat dissipation holes (111), the heat dissipation holes (111) are connected to the cavity (113), the inner wall of the heat dissipation holes (111) on the support seat (11) is provided with a dust screen (112), the end wall of the slide plate (8) facing the heat dissipation holes (111) is provided with a brush (85), and the dust screen (112) is located on the sliding path of the brush (85).

Images