Piston ring for oil-free compressor and grinding equipment of piston ring

Abstract

The piston ring comprises a fixed base and a rotating disc, the rotating disc is movably installed in the middle of the outer surface of the upper end of the fixed base, and a plurality of sets of installers are annularly distributed at the upper end of the rotating disc; a first polisher, a second polisher, a dust collector and a receiving hopper are sequentially arranged on the outer surface of the side edge of the fixed base, a user sleeves a plurality of groups of piston rings on an installer, and the installer is driven to rotate by a rotating disc, so that the plurality of groups of piston rings installed on the installer sequentially pass through the first polisher, the second polisher, the dust collector and the receiving hopper; multi-stage grinding, dust collection cleaning and discharging operation of the piston ring are completed; when the grinding equipment for the piston rings is used, the rotary grinding operation of the multiple sets of piston rings can be completed at a time, the grinding machining efficiency of the piston rings is improved, the stability of the rotary grinding operation of the multiple sets of piston rings can be improved, and meanwhile the discharging operation is more convenient and faster.

Description

Technical Field

[0001] The invention belongs to the relevant field of piston ring processing technology, and more specifically relates to a piston ring for an oil-free compressor and a piston ring grinding device. Background Art

[0002] The piston ring of an oil-free compressor is a component that connects the piston and the cylinder liner. It plays an important role in preventing gas leakage and reducing friction, ensuring the efficient operation of the compressor. It is usually made of self-lubricating materials, such as polytetrafluoroethylene, polyetheretherketone and other polymer materials, to avoid oil pollution caused by the use of lubricating oil.

[0003] The patent application document with publication number CN117549153A records a piston ring grinding device and a grinding method, which relates to the technical field of piston ring grinding, including a work box, a controller is fixedly connected to the upper side of the work box, a first ball screw mechanism is provided on the rear side of the controller, the first ball screw mechanism is fixedly connected to the work box, a second motor is provided on the right side of the first ball screw mechanism, the first ball screw mechanism includes a first screw and a first slider inside, the second motor is fixedly connected to the work box and the output end is fixedly connected to the first screw, and the piston ring grinding angle is adjusted by providing a laser transmitter, a laser receiver, a fifth motor, a worm and a second worm gear.

[0004] The above-mentioned equipment has certain deficiencies when performing piston ring grinding operations. When the piston ring is in use, it mainly uses its side structure to ensure the airtightness between the piston and the cylinder body when the piston moves. Therefore, it is necessary to grind the surface of the piston ring after it is formed to improve its airtightness. However, the above-mentioned equipment cannot complete the side grinding operations of multiple groups of piston rings at one time during the grinding operation, which reduces its grinding efficiency. At the same time, when performing the piston ring grinding operation, in order to completely grind the piston ring surface, it is necessary to perform the grinding operation during the rotation of the piston ring. The piston ring adopts a disconnected structure design. High-speed grinding will cause the piston ring to separate during rotation, reducing its stability during the grinding operation. Secondly, the above-mentioned equipment does not have an auxiliary material collection structure. The polished piston rings need to be removed manually one by one, which increases the user's operating steps and has a single functionality. Summary of the invention

[0005] The object of the present invention is to provide a piston ring for an oil-free compressor and a grinding device for the piston ring, which can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. When the piston ring is in use, its side structure is mainly used to ensure the airtightness between the piston and the cylinder body when the piston moves. Therefore, it is necessary to grind the surface of the piston ring after it is formed to improve its airtightness. However, the above equipment cannot complete the side grinding operation of multiple groups of piston rings at one time during the grinding operation, which reduces its grinding efficiency;

[0008] 2. When grinding the piston ring, in order to completely grind the piston ring surface, the grinding operation needs to be performed during the rotation of the piston ring. However, the piston ring adopts a disconnected structure design. High-speed grinding will cause the piston ring to separate during rotation, reducing its stability during the grinding operation.

[0009] 3. Secondly, the traditional equipment does not have an auxiliary material collection structure, and the polished piston rings need to be removed manually one by one, which increases the user's operating steps and has a single functionality.

[0010] The purpose of the present invention can be achieved through the following technical solutions:

[0011] A piston ring for an oil-free compressor comprises a ring body, wherein the outer surface of the ring body is provided with a coupling buckle, wherein the coupling buckle comprises a first clamp and a second clamp, wherein the first clamp is arranged on one side of the second clamp, and the second clamp is fixedly mounted on the outer surface of one end of the ring body, and the first clamp is fixedly mounted on the outer surface of the other end of the ring body, wherein the side surfaces of the first clamp and the second clamp are both L-shaped structures, and the first clamp and the second clamp are arranged in an up-down offset manner.

[0012] A piston ring grinding device comprises a fixed base and a rotating disk, wherein the rotating disk is movably mounted at the middle position of the upper outer surface of the fixed base, and a plurality of groups of installers are distributed in a ring shape on the upper end of the rotating disk, and a first grinder, a second grinder, a vacuum cleaner and a receiving hopper are sequentially arranged on the side outer surface of the fixed base. A user sets a plurality of groups of piston rings on the installer, and drives the installer to rotate by the rotating disk, so that the plurality of groups of piston rings installed on the installer pass through the first grinder, the second grinder, the vacuum cleaner and the receiving hopper in sequence, thereby completing multi-stage grinding, dust collection, cleaning and discharge operations of the piston rings.

[0013] As a further technical solution of the present invention, the rotating disk and the fixed base are movably connected via a rotating rod, and a second gear is provided at the lower end of the rotating rod. A rotating socket for cooperating with the installer is installed on the inner side of the rotating disk, and a fixed top cover is provided on the top of the fixed base. The user docks the installer equipped with the piston ring on the rotating socket of the rotating disk. When the rotating disk rotates the installer to the corresponding position, the first gear and the corresponding gear engage, and the gear is driven by a motor so that the first gear drives the docking rotating rod of the rotating socket to rotate, thereby driving several groups of piston rings to rotate, facilitating the rotation and grinding operation of the piston rings.

[0014] As a further technical solution of the present invention, a docking rotating rod is movably installed in the middle of the rotating base, and a first gear is provided on the outer surface of the lower end of the docking rotating rod. Several groups of motors for use with the first gear are installed inside the fixed base, and a gear is installed on the output shaft of the motor. When the first gear and the gear are meshed, the motor can be used to drive the first gear to rotate.

[0015] As a further technical solution of the present invention, the installer includes a docking plate, a limit plate and a lifting plate. The limit plate is fixedly installed on the upper part of the docking plate, and the lifting plate is movably installed on the upper part of the limit plate. Two groups of limit rotating rods are movably installed between the limit plate and the docking plate. A clamping head for docking the rotating plate is fixedly installed at the lower end of the docking plate. During operation, several groups of ring bodies are sleeved on the rotating sleeve column. By moving the limit rotating rod, the two groups of limit rotating rods are respectively clamped on both sides of the ring body. The rotation of the rotating sleeve column can drive the ring body to rotate, so that the ring body can perform a rotational grinding operation.

[0016] As a further technical solution of the present invention, a rotating sleeve column is movably installed in the middle position of the lower end of the lifting plate, and a slot for cooperating with the docking rotating rod is provided in the middle of the rotating sleeve column, and a circular notch for cooperating with the rotating sleeve column is provided in the middle of the limiting plate and the docking plate. When in use, the rotating sleeve column is docked and fixed with the docking rotating rod, and when the docking rotating rod rotates, the rotating sleeve column can be driven to rotate, thereby driving several groups of piston rings on the surface of the rotating sleeve column to rotate. When the piston ring rotates, the limiting rotating rod attached to the surface of the piston ring rotates synchronously. Because the ring body adopts a disconnected structure design, in order to avoid the ring body from falling off during grinding, the limiting rotating rod can limit the ring body during the rotation process.

[0017] As a further technical solution of the present invention, a docking slider is slidably installed on the inner sides of the limit plate and the docking plate, and the docking slider and the limit rotating rod are movably connected by a rotating shaft, and a telescopic rod is movably installed on the upper end of the limit rotating rod, and the upper end of the telescopic rod is slidably connected to the docking plate by a push buckle. In order to meet the needs of fixing and taking materials of ring bodies with different thicknesses, the user pushes the push buckle so that the push buckle uses the docking slider to drive the limit rotating rod to make the two groups of limit rotating rods slide between the limit plate and the docking plate to adjust the use position of the limit rotating rod. When the ring body is installed, the two groups of limit rotating rods can be attached to the sides of the ring body and cooperate with the ring body to rotate. When the ring body is taken out, the two groups of limit rotating rods are separated, and the lifting plate is pulled upward at the same time, so that the lifting plate drives the rotating sleeve column to move up, so that the rotating sleeve column is pulled out from the limit plate. When the rotating sleeve column is pulled out, the ring body sleeved on the surface of the rotating sleeve column is separated downward by the limit plate, so that several groups of ring bodies are removed from the surface of the rotating sleeve column.

[0018] As a further technical solution of the present invention, the second grinder and the first grinder both include a threaded sleeve and a grinding wheel, the threaded sleeve is arranged on one side of the grinding wheel, one end of the grinding wheel is driven by a motor, and the threaded sleeve can drive the grinding wheel to translate, thereby adjusting the grinding position of the grinding wheel and making the grinding wheel close to the surface of the ring body.

[0019] As a further technical solution of the present invention, the end of the threaded sleeve is driven by a motor and a screw rod, and transverse guide rods are arranged on both sides of the threaded sleeve. The two sets of transverse guide rods are arranged parallel to each other up and down. During operation, the screw rod is driven to rotate by the motor, and the screw rod drives the threaded sleeve to move by utilizing the threaded structure, and the transverse guide rod plays a guiding role in the translation of the grinding wheel.

[0020] As a further technical solution of the present invention, a material guide slide is provided on one side of the receiving hopper at the upper end of the fixed base, an elastic guide plate is movably installed at one end of the material guide slide, and an inclined bottom plate is provided at the bottom of the material guide slide. The separated ring body can be guided into the material guide slide by the elastic guide plate, and discharged into the receiving hopper for collection.

[0021] Beneficial effects of the present invention:

[0022] 1. By setting a rotating disk and an installer, when the piston ring grinding device is used, it can complete the rotation grinding operation of several groups of piston rings at one time, thereby improving the efficiency of piston ring grinding processing;

[0023] The user sets several groups of piston rings on the rotating sleeve of the installer, and drives the installer to rotate by using the rotating disk, so that the several groups of piston rings installed on the rotating sleeve pass through the first grinder, the second grinder, the vacuum cleaner and the receiving hopper in sequence, so as to complete the multi-stage grinding, vacuum cleaning and discharge operations of the piston rings. During operation, the second gear is driven by the motor to drive the rotating rod, thereby driving the rotating disk to rotate. The rotation of the rotating disk is used to adjust the positions of several groups of installers on its surface. When the rotating disk rotates the installer to the corresponding position, the first gear and the corresponding gear mesh. The motor drives the gears so that the first gear drives the docking rotating rod of the rotating card seat to rotate, thereby driving several groups of piston rings to rotate, which is convenient for the piston ring to perform rotational grinding operations. During grinding, the motor drives the screw rod to rotate, and the screw rod uses the threaded structure to drive the threaded sleeve to move. The transverse guide rod guides the translation of the grinding wheel. The motor drives the grinding wheel to rotate, and the surface grinding operation is completed during the rotation of the ring body. A slot is provided in the middle of the rotating sleeve column for cooperating with the docking rotating rod. Therefore, after the rotating sleeve column and the docking rotating rod are installed, the rotating sleeve column can be driven to rotate by the docking rotating rod.

[0024] 2. By setting a rotating sleeve column and a limit rotating rod, when the piston ring grinding device is used, the stability of several groups of piston rings during the rotating grinding operation can be improved, and the discharge operation can be more convenient;

[0025] When in use, the rotating sleeve column is docked and fixed with the docking rotating rod. When the docking rotating rod rotates, the rotating sleeve column can be driven to rotate, thereby driving several groups of piston rings on the surface of the rotating sleeve column to rotate. When the piston ring rotates, the limit rotating rod attached to the surface of the piston ring rotates synchronously. Because the ring body adopts a disconnected structure design, in order to avoid the ring body from falling off during grinding, the limit rotating rod can limit the ring body during the rotation process. Secondly, in order to meet the needs of fixing and taking materials for ring bodies of different thicknesses, the user pushes the push buckle so that the push buckle drives the limit rotating rod with the docking slider, so that the two groups of limit rotating rods slide between the limit plate and the docking plate, and adjust The use position of the limit rotating rod is that when the ring body is installed, the two sets of limit rotating rods can be attached to the sides of the ring body and cooperate with the ring body to rotate. When the ring body is taking materials, the two sets of limit rotating rods are separated, and the lifting plate is pulled upward at the same time. Under the action of the telescopic rod, the lifting plate drives the rotating sleeve column to move upward, so that the rotating sleeve column is pulled out from the limit plate. When the rotating sleeve column is pulled out, the ring body sleeved on the surface of the rotating sleeve column is separated downward through the limit plate, so that several groups of ring bodies are removed from the surface of the rotating sleeve column. The telescopic rod and the docking slider are used in combination, so that the rotating sleeve column and the limit rotating rod can take into account the lifting and moving adjustment, thereby meeting the rotation fixation and material taking use of the ring body.

[0026] 3. By setting a material guide slideway, when the piston ring grinding equipment is used, it has an auxiliary material discharge structure to improve its use effect;

[0027] During operation, when the rotating sleeve moves upward, the limit plate is used to separate the ring body on the surface of the rotating sleeve. During the rotation of the rotating plate, the ring body placed on the docking plate contacts the elastic guide plate at the end of the material guide slide. The separated ring body can be guided into the material guide slide by the elastic guide plate, and discharged into the receiving hopper for collection by the material guide slide. At the same time, when the elastic guide plate contacts the limit rotating rod, the elastic guide plate is bent at a certain angle, so that the limit rotating rod is moved out from one end of the material guide slide, thereby avoiding obstruction of the rotational movement of the installer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of a piston ring for an oil-free compressor of the present invention;

[0030] Figure 2 It is an overall structural diagram of a piston ring grinding device of the present invention;

[0031] Figure 3It is a planar structural diagram of a rotating disk in a piston ring grinding device of the present invention;

[0032] Figure 4 It is an overall structural diagram of an installer in a piston ring grinding device of the present invention;

[0033] Figure 5 It is a planar structural diagram of a second grinder in a piston ring grinding device of the present invention;

[0034] Figure 6 The present invention is a diagram showing the overall structure of a material guide slideway in a piston ring grinding device.

[0035] In the figure: 1. ring body; 2. first clamp; 3. second clamp; 4. connecting buckle; 5. collecting hopper; 6. fixed base; 7. material guide slide; 8. vacuum cleaner; 9. second grinder; 10. fixed top cover; 11. first grinder; 12. rotating disk; 13. installer; 14. docking rotating rod; 15. rotating clamp; 16. first gear; 17. second gear; 18. docking disk; 19. limiting disk; 20. rotating sleeve column; 21. lifting disk; 22. push buckle; 23. telescopic rod; 24. limiting rotating rod; 25. docking slider; 26. screw rod; 27. threaded sleeve; 28. transverse guide rod; 29. ​​grinding wheel; 30. inclined bottom plate; 31. elastic guide plate. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0037] like Figure 1 As shown, a piston ring for an oil-free compressor includes a ring body 1, and a coupling buckle 4 is provided on the outer surface of the ring body 1. The coupling buckle 4 includes a first clamp 2 and a second clamp 3. The first clamp 2 is arranged on one side of the second clamp 3, and the second clamp 3 is fixedly installed on the outer surface of one end of the ring body 1. The first clamp 2 is fixedly installed on the outer surface of the other end of the ring body 1. The side surfaces of the first clamp 2 and the second clamp 3 are both L-shaped structures, and the first clamp 2 and the second clamp 3 are staggered up and down.

[0038] like Figure 2As shown, a piston ring grinding device includes a fixed base 6 and a rotating disk 12. The rotating disk 12 is movably installed in the middle position of the upper outer surface of the fixed base 6. A plurality of groups of installers 13 are distributed in a ring shape on the upper end of the rotating disk 12. The side outer surface of the fixed base 6 is sequentially provided with a first grinder 11, a second grinder 9, a vacuum cleaner 8 and a receiving hopper 5. The user puts a plurality of groups of piston rings on the installer 13, and drives the installer 13 to rotate by using the rotating disk 12, so that the plurality of groups of piston rings installed on the installer 13 pass through the first grinder 11, the second grinder 9, the vacuum cleaner 8 and the receiving hopper 5 in sequence, thereby completing the multi-stage grinding, dust collection, cleaning and discharge operations of the piston rings.

[0039] To solve the problem of synchronous grinding of piston rings, such as Figure 3 As shown, the rotating disk 12 and the fixed base 6 are movably connected by a rotating rod, and a second gear 17 is provided at the lower end of the rotating rod. A rotating holder 15 used in conjunction with the installer 13 is installed on the inner side of the rotating disk 12, and a fixed top cover 10 is provided above the fixed base 6. The user docks the installer 13 equipped with a piston ring on the rotating holder 15 of the rotating disk 12. When the rotating disk 12 rotates the installer 13 to a corresponding position, the first gear 16 engages with the corresponding gear, and the motor drives the gear so that the first gear 16 drives the docking rotating rod 14 of the rotating holder 15 to rotate, thereby driving several groups of piston rings to rotate, which is convenient for the rotation and grinding operation of the piston rings.

[0040] A docking rotating rod 14 is movably installed in the middle of the rotating base 15, and a first gear 16 is provided on the outer surface of the lower end of the docking rotating rod 14. Several groups of motors used in conjunction with the first gear 16 are installed inside the fixed base 6. The output shaft of the motor is installed with a gear. When the first gear 16 is engaged with the gear, the motor can be used to drive the first gear 16 to rotate.

[0041] To improve the stability of the piston ring grinding operation, Figure 4 As shown, the installer 13 includes a docking plate 18, a limit plate 19 and a lifting plate 21. The limit plate 19 is fixedly installed on the upper part of the docking plate 18, and the lifting plate 21 is movably installed on the upper part of the limit plate 19. Two groups of limit rotating rods 24 are movably installed between the limit plate 19 and the docking plate 18. A clamping head for docking the rotating plate 12 is fixedly installed at the lower end of the docking plate 18. During operation, several groups of ring bodies 1 are sleeved on the rotating sleeve column 20. By moving the limit rotating rod 24, the two groups of limit rotating rods 24 are respectively clamped on both sides of the ring body 1. The rotation of the rotating sleeve column 20 can drive the ring body 1 to rotate, so that the ring body 1 can perform a rotational grinding operation.

[0042] A rotating sleeve column 20 is movably installed at the middle position of the lower end of the lifting plate 21, and a slot for cooperating with the docking rotating rod 14 is provided in the middle of the rotating sleeve column 20, and a circular notch for cooperating with the rotating sleeve column 20 is provided in the middle of the limiting plate 19 and the docking plate 18. When in use, the rotating sleeve column 20 is docked and fixed with the docking rotating rod 14. When the docking rotating rod 14 rotates, the rotating sleeve column 20 can be driven to rotate, thereby driving several groups of piston rings on the surface of the rotating sleeve column 20 to rotate. When the piston ring rotates, the limiting rotating rod 24 attached to the surface of the piston ring rotates synchronously. Because the ring body 1 adopts a disconnected structure design, in order to avoid the ring body 1 from falling off during grinding, the limiting rotating rod 24 can limit the ring body 1 during the rotation process.

[0043] like Figure 4 As shown, a docking slider 25 is slidably installed on the inner side of the limit plate 19 and the docking plate 18, and the docking slider 25 and the limit rotating rod 24 are movably connected through a rotating shaft. A telescopic rod 23 is movably installed on the upper end of the limit rotating rod 24, and the upper end of the telescopic rod 23 and the docking plate 18 are slidably connected through a push buckle 22. In order to meet the needs of fixing and taking materials for ring bodies 1 of different thicknesses, the user pushes the push buckle 22, so that the push buckle 22 drives the limit rotating rod 24 using the docking slider 25, so that the two sets of limit rotating rods 24 slide between the limit plate 19 and the docking plate 18. The use position of the limit rotating rod 24 is adjusted. When the ring body 1 is installed, the two sets of limit rotating rods 24 can be attached to the side of the ring body 1 and rotated in coordination with the ring body 1. When the ring body 1 is operated to take materials, the two sets of limit rotating rods 24 are separated, and the lifting plate 21 is pulled upward at the same time, so that the lifting plate 21 drives the rotating sleeve 20 to move upward, and the rotating sleeve 20 is pulled out from the limit plate 19. When the rotating sleeve 20 is pulled out, the ring body 1 sleeved on the surface of the rotating sleeve 20 is separated downward through the limit plate 19, so that several sets of ring bodies 1 are removed from the surface of the rotating sleeve 20.

[0044] like Figure 5 As shown, the second grinder 9 and the first grinder 11 both include a threaded sleeve 27 and a grinding wheel 29. The threaded sleeve 27 is arranged on one side of the grinding wheel 29. One end of the grinding wheel 29 is driven by a motor. The threaded sleeve 27 can drive the grinding wheel 29 to translate, thereby adjusting the grinding position of the grinding wheel 29 so that the grinding wheel 29 is closely attached to the surface of the ring body 1.

[0045] The end of the threaded sleeve 27 is driven by a motor and a screw rod 26. Transverse guide rods 28 are provided on both sides of the threaded sleeve 27. The two sets of transverse guide rods 28 are arranged parallel to each other. During operation, the screw rod 26 is driven to rotate by the motor, and the screw rod 26 drives the threaded sleeve 27 to move by using the threaded structure. The transverse guide rods 28 guide the translation of the grinding wheel 29.

[0046] like Figure 6As shown, the upper end of the fixed base 6 is located on one side of the receiving hopper 5 and a material guide chute 7 is provided. An elastic guide plate 31 is movably installed at one end of the material guide chute 7, and an inclined bottom plate 30 is provided at the bottom of the material guide chute 7. The elastic guide plate 31 can be used to guide the separated ring body 1 into the material guide chute 7, and the material guide chute 7 is discharged into the receiving hopper 5 for collection.

[0047] When in use, the piston ring mainly uses its side structure to ensure the airtightness between the piston and the cylinder body when the piston moves. Therefore, it is necessary to grind the surface of the piston ring after it is formed to improve its airtightness. However, the above equipment cannot complete the side grinding operation of multiple groups of piston rings at one time during the grinding operation, which reduces its grinding efficiency.

[0048] To this end, by providing the rotating disk 12 and the installer 13, when the piston ring grinding device is used, it can complete the rotation grinding operation of several groups of piston rings at one time, thereby improving the efficiency of the piston ring grinding process;

[0049] The user sets several groups of piston rings on the rotating sleeve 20 of the installer 13, and uses the rotating disk 12 to drive the installer 13 to rotate, so that the several groups of piston rings installed on the rotating sleeve 20 pass through the first grinder 11, the second grinder 9, the vacuum cleaner 8 and the receiving hopper 5 in sequence, completing the multi-stage grinding, vacuum cleaning and discharge operations of the piston rings. During the operation, the second gear 17 is driven by the motor to drive the rotating rod, thereby driving the rotating disk 12 to rotate. The rotation of the rotating disk 12 is used to adjust the positions of the several groups of installers 13 on its surface. When the rotating disk 12 rotates the installer 13 to the corresponding position, the first gear 16 meshes with the corresponding gear. The motor drives the gears, so that the first gear 16 drives the docking rotating rod 14 of the rotating card seat 15 to rotate, thereby driving several groups of piston rings to rotate, which is convenient for the piston rings to perform rotational grinding operations. During grinding, the motor drives the screw rod 26 to rotate, and the screw rod 26 drives the threaded sleeve 27 to move by using the threaded structure. The transverse guide rod 28 guides the translation of the grinding wheel 29. The grinding wheel 29 is driven by the motor to rotate, and the surface grinding operation of the ring body 1 is completed during the rotation process. The middle part of the rotating sleeve column 20 is provided with a slot for matching the docking rotating rod 14. Therefore, after the rotating sleeve column 20 and the docking rotating rod 14 are installed, the rotating sleeve column 20 can be driven to rotate by the docking rotating rod 14;

[0050] At the same time, when grinding the piston ring, in order to completely grind the piston ring surface, the grinding operation needs to be performed during the rotation of the piston ring. However, the piston ring adopts a disconnected structure design. High-speed grinding will cause the piston ring to separate during rotation, reducing its stability during the grinding operation.

[0051] To this end, by providing the rotating sleeve 20 and the limiting rotating rod 24, when the piston ring grinding device is used, the stability of the rotating grinding operation of several groups of piston rings can be improved, and the discharge operation can be more convenient;

[0052] When in use, the rotating sleeve 20 is docked and fixed with the docking rotating rod 14. When the docking rotating rod 14 rotates, the rotating sleeve 20 can be driven to rotate, thereby driving several groups of piston rings on the surface of the rotating sleeve 20 to rotate. When the piston ring rotates, the limiting rotating rod 24 attached to the surface of the piston ring rotates synchronously. Because the ring body 1 adopts a disconnected structural design, in order to avoid the ring body 1 from falling off during grinding, the limiting rotating rod 24 can limit the ring body 1 during the rotation process. Secondly, in order to meet the needs of fixing and taking materials for ring bodies 1 of different thicknesses, the user pushes the push buckle 22 so that the push buckle 22 drives the limiting rotating rod 24 using the docking slider 25, so that the two groups of limiting rotating rods 24 slide between the limiting disk 19 and the docking disk 18, and adjust the limiting rotating rod The use position of 24, when the ring body 1 is installed, the two sets of limit rotating rods 24 can be attached to the side of the ring body 1 and rotated in coordination with the ring body 1. When the ring body 1 is operated to take materials, the two sets of limit rotating rods 24 are separated, and the lifting plate 21 is pulled upward at the same time. Under the action of the telescopic rod 23, the lifting plate 21 drives the rotating sleeve 20 to move upward, so that the rotating sleeve 20 is pulled out from the limit plate 19. When the rotating sleeve 20 is pulled out, the ring body 1 sleeved on the surface of the rotating sleeve 20 is separated downward through the limit plate 19, so that several groups of ring bodies 1 are removed from the surface of the rotating sleeve 20. The telescopic rod 23 and the docking slider 25 are used in coordination, so that the rotating sleeve 20 and the limit rotating rod 24 can take into account the lifting and moving adjustment, which meets the rotation fixation and material taking use of the ring body 1;

[0053] Secondly, the traditional equipment does not have an auxiliary material collection structure, and the polished piston rings need to be removed manually one by one, which increases the user's operation steps and has a single function;

[0054] To this end, by providing a material guide slideway 7, when the piston ring grinding device is used, it has an auxiliary material discharge structure to improve its use effect;

[0055] During operation, when the rotating sleeve 20 moves upward, the limiting disk 19 is used to separate the ring body 1 on the surface of the rotating sleeve 20. During the rotation of the rotating disk 12, the ring body 1 placed on the docking disk 18 contacts the elastic guide plate 31 at the end of the material guide slide 7. The separated ring body 1 can be introduced into the material guide slide 7 by the elastic guide plate 31, and discharged into the receiving hopper 5 for collection by the material guide slide 7. At the same time, when the elastic guide plate 31 contacts the limiting rotating rod 24, the elastic guide plate 31 is bent at a certain angle, so that the limiting rotating rod 24 moves out from one end of the material guide slide 7, thereby avoiding obstruction of the rotation movement of the installer 13.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A piston ring for an oil-free compressor, characterized in that: The invention comprises a ring body (1), the outer surface of the ring body (1) is provided with a coupling buckle (4), the coupling buckle (4) comprises a first clamping head (2) and a second clamping head (3), the first clamping head (2) is arranged on one side of the second clamping head (3), the second clamping head (3) is fixedly mounted on the outer surface of one end of the ring body (1), the first clamping head (2) is fixedly mounted on the outer surface of the other end of the ring body (1), the side surfaces of the first clamping head (2) and the second clamping head (3) are both L-shaped structures, and the first clamping head (2) and the second clamping head (3) are arranged in an up-down staggered manner.

2. A piston ring grinding device, characterized in that: The invention comprises a fixed base (6) and a rotating disk (12), wherein the rotating disk (12) is movably mounted at the middle position of the upper outer surface of the fixed base (6), and a plurality of groups of installers (13) are distributed in a ring shape at the upper end of the rotating disk (12), and a first grinder (11), a second grinder (9), a dust collector (8) and a receiving hopper (5) are sequentially arranged on the side outer surface of the fixed base (6).

3. A piston ring grinding device according to claim 2, characterized in that: The rotating disk (12) and the fixed base (6) are movably connected via a rotating rod, and a second gear (17) is provided at the lower end of the rotating rod. A rotating base (15) for use with the installer (13) is installed on the inner side of the rotating disk (12), and a fixed top cover (10) is provided above the fixed base (6).

4. The piston ring grinding device according to claim 3, characterized in that: A docking rotating rod (14) is movably mounted in the middle of the rotating base (15), a first gear (16) is arranged on the outer surface of the lower end of the docking rotating rod (14), and a plurality of motors for use with the first gear (16) are mounted inside the fixed base (6).

5. The piston ring grinding device according to claim 2, characterized in that: The installer (13) comprises a docking plate (18), a limiting plate (19) and a lifting plate (21); the limiting plate (19) is fixedly mounted on the upper part of the docking plate (18); the lifting plate (21) is movably mounted on the upper part of the limiting plate (19); two groups of limiting rotating rods (24) are movably mounted between the limiting plate (19) and the docking plate (18); and a clamping head for docking with the rotating plate (12) is fixedly mounted on the lower end of the docking plate (18).

6. The piston ring grinding device according to claim 5, characterized in that: A rotating sleeve column (20) is movably mounted at the middle of the lower end of the lifting plate (21), and a slot for cooperating with the docking rotating rod (14) is provided in the middle of the rotating sleeve column (20), and a circular notch for cooperating with the rotating sleeve column (20) is provided in the middle of the limiting plate (19) and the docking plate (18).

7. The piston ring grinding device according to claim 6, characterized in that: A docking slider (25) is slidably mounted on the inner sides of the limiting plate (19) and the docking plate (18); the docking slider (25) and the limiting rotating rod (24) are movably connected via a rotating shaft; a telescopic rod (23) is movably mounted on the upper end of the limiting rotating rod (24); and the upper end of the telescopic rod (23) and the docking plate (18) are slidably connected via a push buckle (22).

8. The piston ring grinding device according to claim 2, characterized in that: The second grinder (9) and the first grinder (11) both comprise a threaded sleeve (27) and a grinding wheel (29); the threaded sleeve (27) is arranged on one side of the grinding wheel (29); and one end of the grinding wheel (29) is driven by a motor.

9. The piston ring grinding device according to claim 8, characterized in that: The end of the threaded sleeve (27) is driven by a motor in cooperation with a screw rod (26). Transverse guide rods (28) are arranged on both sides of the threaded sleeve (27), and two groups of transverse guide rods (28) are arranged in parallel up and down.

10. The piston ring grinding device according to claim 2, characterized in that: The upper end of the fixed base (6) is located on one side of the receiving hopper (5) and is provided with a material guide slide (7), one end of the material guide slide (7) is movably mounted with an elastic guide plate (31), and the bottom of the material guide slide (7) is provided with an inclined bottom plate (30).

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