Outer circle centerless abrasive belt polishing machine

Abstract

The utility model relates to an outer circle centerless abrasive belt polishing machine which comprises a feeding conveying roller way, a clamping and conveying device, a polishing device, a drawing-out device and a discharging conveying roller way which are sequentially arranged on the horizontal ground of a workshop from left to right along a straight line, and the polishing device is provided with a through hole, an abrasive belt polishing assembly and a linear driving assembly. The through hole is communicated with the clamping and conveying device and the extraction device, the diameter of the through hole is larger than 265 mm, one ends of the two abrasive belt polishing assemblies are hinged to the two sides of the through hole at the position of the clamping and conveying device, and the other ends of the two abrasive belt polishing assemblies are hinged to the driving ends of the linear driving assemblies correspondingly. The two linear driving assemblies are fixed to the two sides of the through hole correspondingly, the two abrasive belt polishing assemblies and the two linear driving assemblies serve as a whole to rotate around the through hole, and the two abrasive belt polishing assemblies can be driven by the two linear driving assemblies to deflect in the direction of the through hole around the hinge point. The outer circle centerless abrasive belt polishing machine can machine round bars with the diameter phi of 100 mm.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an outer cylindrical centerless abrasive belt polishing machine. Background Art

[0002] Polishing is a processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. When polishing rods, polishing machines are often used for mechanical polishing, but polishing machines on the market can only process diameters. Round bars with diameters greater than The round bars cannot be processed due to the size limitation of the equipment.

[0003] At present, there are diameter Finished titanium alloy bars with a length of 3-6m need to be polished, and the surface roughness after polishing must be within Ra1.6. If a polishing machine is not used for processing, manual grinding alone cannot meet the polishing accuracy requirements.

[0004] Therefore, it is urgent to design a polishing machine that can polish bars with large diameters. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a External cylindrical centerless abrasive belt polishing machine for processing standard round bars.

[0006] The utility model adopts the following technical solutions:

[0007] The utility model provides an external cylindrical centerless abrasive belt polishing machine, comprising a feeding conveying roller, a clamping device, a polishing device, a pulling device and a feeding conveying roller. The feeding conveying roller, the clamping device, the polishing device, the pulling device and the feeding conveying roller are arranged in sequence from left to right on the horizontal ground of a workshop along a straight line. A through hole, an abrasive belt polishing component and a linear drive component are provided on the polishing device. The through hole is connected with the clamping device and the pulling device, and the diameter of the through hole is above 265 mm. One ends of two abrasive belt polishing components are hingedly arranged at both sides of the through hole at the clamping device, and the other ends of the two abrasive belt polishing components are respectively hingedly connected to the driving end of a linear drive component. The two linear drive components are respectively fixed on both sides of the through hole. The two abrasive belt polishing components and the two linear drive components rotate around the through hole as a whole, and the two abrasive belt polishing components can be deflected toward the through hole direction around the hinge point under the drive of the two linear drive components.

[0008] Preferably, it also includes a loading rack, which includes a loading bracket and a loading shaft. A plurality of loading brackets are arranged in parallel and at equal intervals at one side edge of the straight extension direction of the loading conveyor roller, and the top of each loading bracket extends obliquely downward near the position of the loading conveyor roller. The loading shaft can rotate vertically through all the loading brackets. A loading baffle and a loading support plate are respectively arranged on both sides of each loading bracket near the position of the loading conveyor roller. The loading baffle is fixed on the loading shaft, and the middle part of the loading support plate can be hinged to the loading bracket in a lifting manner, and one end of the loading support plate is hinged to the loading shaft.

[0009] Preferably, the loading and conveying roller includes a loading roller seat and a loading base. A plurality of rollers are arranged in parallel and at intervals on the top of the loading roller seat. All rollers are connected to the motor transmission at the bottom of the loading roller seat through a chain drive. The loading base is arranged on the horizontal ground of the workshop and is fixed with a lifting drive assembly. The driving end of the lifting drive assembly is connected to the bottom of the loading roller seat.

[0010] Preferably, it also includes a unloading rack, which includes a unloading rack, a first unloading shaft and a second unloading shaft. A plurality of unloading racks are arranged in parallel and at equal intervals at one side edge of the straight extension direction of the unloading conveying roller. The top of the unloading rack is concave on the side away from the unloading conveying roller to form a storage groove. The first unloading shaft and the second unloading shaft can both rotate vertically through all the unloading racks, and the first unloading shaft is arranged close to the unloading conveying roller, and the second unloading shaft is arranged away from the unloading conveying roller. A plurality of material stripping plates are fixed at intervals on the first unloading shaft, and a plurality of material supporting racks are fixed at intervals on the second unloading shaft. Each material stripping plate and each supporting rack are respectively arranged close to a unloading rack.

[0011] Preferably, the top of the unloading bracket, the top of the material diverting plate and the top of the supporting rack are all paved with an anti-scratch buffer layer.

[0012] Preferably, the loading conveyor roller, the clamping device, the polishing device, the extraction device, the unloading conveyor roller, the loading rack and the unloading rack are all electrically driven and controlled by the same PLC controller.

[0013] Preferably, the clamping and conveying device includes a clamping and conveying frame, a telescopic drive assembly and a swing arm. The clamping and conveying frame is arranged on the horizontal ground of the workshop. Two laterally arranged independent cavities are opened inside the clamping and conveying frame. A telescopic drive assembly is hinged on the top of each independent cavity. Two swing arms with external teeth meshing along the height direction are arranged in each independent cavity. A clamping and conveying roller driven by a motor is arranged on the swing end of each swing arm, and the swing arm located above is hinged to the drive end of the telescopic drive assembly at the swing end.

[0014] Preferably, the abrasive belt polishing assembly includes a mounting seat, a polishing wheel, a tensioning wheel and an abrasive belt. The two polishing wheels are rotatably vertically arranged at the two ends of the mounting seat, and a tensioning wheel is rotatably vertically arranged in the middle of the mounting seat. The abrasive belt circumferentially covers the two polishing wheels and the tensioning wheel in a taut state. One end of the mounting seat is hinged to one side of the through hole, and the other end is hinged to the driving end of the linear drive assembly. The polishing wheel located at the hinge point of the mounting seat rotates under the drive of the gear transmission assembly.

[0015] Preferably, the gear transmission assembly includes a spindle seat and a turntable. The spindle seat is arranged on the horizontal ground of the workshop. A fixed gear is arranged at one axial end of the spindle seat, and a spindle is rotatably axially penetrated by the spindle seat. The turntable is axially fixed on the spindle close to the fixed gear. The through hole penetrates the turntable and the spindle at the same time. The spindle is transmission-connected to the rotating drive assembly. One end of the mounting seat is hinged on the turntable. The polishing wheel axle located at the hinge point of the mounting seat passes through the turntable and meshes with the fixed gear through the moving gear. The other end of the mounting seat is hinged to the driving end of the linear drive assembly, and the linear drive assembly is arranged on the turntable.

[0016] Preferably, the outer cover of the polishing device is provided with a transparent cubic protective cover, one side of the protective cover is provided with a double-opening sliding door, and the other side of the protective cover opposite to the sliding door is provided with an avoidance hole, the aperture of the avoidance hole is consistent with the aperture of the through hole.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] When the external cylindrical centerless abrasive belt polishing machine of the utility model is in use, the blank to be polished is transported to the loading conveying roller, and then the loading conveying roller and the clamping device drive the blank to be polished to move into the through hole of the polishing device, and then the two abrasive belt polishing components are adjusted to deflect to abut against the outer diameter of the blank to be polished, and the abrasive belt polishing components can be started to polish the blank to be polished. After the polished blank passes through the through hole, it is driven by the extraction device and the unloading conveying roller to completely move out of the through hole.

[0019] Since the diameter of the through hole on the polishing device is above 265mm, the positions of the two belt polishing components can be adjusted by two linear drive components to adapt to various sizes of blanks to be polished, so that the diameter can be adjusted. Specification round bars are polished. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an outer cylindrical centerless abrasive belt polisher in an embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of the structure of a feeding and conveying roller table on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0022] Figure 3 It is a front structural schematic diagram of a clamping and feeding device on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of the back structure of the clamping and feeding device on the external cylindrical centerless abrasive belt polishing machine in the embodiment of the utility model.

[0024] Figure 5 It is a front structural schematic diagram of a polishing device on an external cylindrical centerless abrasive belt polisher without a protective cover in an embodiment of the utility model.

[0025] Figure 6 It is a schematic diagram of the back structure of the polishing device on the external cylindrical centerless abrasive belt polishing machine without the protective cover in the embodiment of the utility model.

[0026] Figure 7 It is a front structural schematic diagram of a polishing device on an external cylindrical centerless abrasive belt polisher in an embodiment of the utility model.

[0027] Figure 8 It is a schematic diagram of the back structure of the polishing device on the external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0028] Fig. 9 It is a structural schematic diagram of the polishing device on the external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model without a turntable.

[0029] Fig.10 It is a schematic diagram of the structure of a material unloading conveying roller on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0030] Fig.11 It is a front view of a loading rack on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0031] Fig.12 It is a top view of a loading rack on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0032] Fig.13 It is a left view of a loading rack on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0033] Fig.14 It is a schematic diagram of the structure of a material unloading rack on an external cylindrical centerless abrasive belt polishing machine in an embodiment of the utility model.

[0034] The reference numerals are described as follows:

[0035] 1. Feeding conveyor roller 345, moving gear

[0036] 11. Loading roller table 35. Rotation drive assembly

[0037] 12. Loading base 351, active synchronous pulley

[0038] 13. Roller 352, driven synchronous pulley

[0039] 14. Lifting drive assembly 353, synchronous belt

[0040] 2. Clamping device 354, Y-type motor

[0041] 21. Clamping and conveying rack 36. Protective cover

[0042] 22. Telescopic drive assembly 361. Sliding door

[0043] 23. Swing arm 362. Avoidance hole

[0044] 24. Independent cavity 4. Extraction device

[0045] 25. Pinch roller 5. Unloading conveyor roller

[0046] 3. Polishing device 6. Loading rack

[0047] 31, through hole 61, feeding bracket

[0048] 32. Abrasive belt polishing assembly 62. Feeding shaft

[0049] 321, mounting seat 63, loading baffle

[0050] 322, polishing wheel 64, loading support plate

[0051] 323, tension wheel 7, unloading rack

[0052] 324, abrasive belt 71, unloading bracket

[0053] 33. Linear drive assembly 72. First blanking shaft

[0054] 34. Gear transmission assembly 73. Second blanking shaft

[0055] 341, spindle seat 74, storage tank

[0056] 342, turntable 75, material shifting plate

[0057] 343, fixed gear 76, support rack

[0058] 344, spindle 77, anti-scratch buffer layer DETAILED DESCRIPTION

[0059] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0060] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0063] See also Figure 1 and Figure 5 The present embodiment provides an external cylindrical centerless abrasive belt polishing machine, comprising a feeding conveying roller 1, a clamping device 2, a polishing device 3, a pulling device 4 and a feeding conveying roller 5. The feeding conveying roller 1, the clamping device 2, the polishing device 3, the pulling device 4 and the feeding conveying roller 5 are arranged in sequence from left to right on the horizontal ground of the workshop along a straight line. The polishing device 3 is provided with a through hole 31, an abrasive belt polishing assembly 32 and a linear drive assembly 33. The through hole 31 connects the clamping device 2 and the pulling device 4, and the diameter of the through hole 31 is 265 mm. As described above, one end of the two belt polishing assemblies 32 is hingedly arranged at the clamping device 2 on both sides of the through hole 31, and the other ends of the two belt polishing assemblies 32 are respectively hinged to the driving end of a linear drive assembly 33, and the two linear drive assemblies 33 are respectively fixed on both sides of the through hole 31. The two belt polishing assemblies 32 and the two linear drive assemblies 33 rotate around the through hole 31 as a whole, and the two belt polishing assemblies 32 can be deflected toward the through hole 31 around the hinge point under the drive of the two linear drive assemblies 33.

[0064] When the external cylindrical centerless abrasive belt polishing machine of this embodiment is in use, the blank to be polished is transported to the loading conveyor roller 1, and then the loading conveyor roller 1 and the clamping device 2 drive the blank to be polished to move into the through hole 31 of the polishing device 3, and then the two abrasive belt polishing assemblies 32 are adjusted to deflect to abut against the outer diameter of the blank to be polished, and the abrasive belt polishing assembly 32 is started to polish the blank to be polished. After the polished blank passes through the through hole 31, it is completely moved out of the through hole 31 driven by the extraction device 4 and the unloading conveyor roller 5.

[0065] Since the diameter of the through hole 31 on the polishing device 3 is above 265 mm, the positions of the two abrasive belt polishing components 32 can be adjusted by the two linear drive components 33 to adapt to various sizes of blanks to be polished, so that the diameter can be adjusted. Specification round bars are polished.

[0066] Preferably, see Figures 11 to 13 The external cylindrical centerless abrasive belt polishing machine of this embodiment also includes a loading rack 6, which includes a loading bracket 61 and a loading shaft 62. Multiple loading brackets 61 are arranged in parallel and at equal intervals on one side edge of the straight extension direction of the loading conveyor roller 1, and the top of each loading bracket 61 extends downward obliquely near the position of the loading conveyor roller 1. The loading shaft 62 can rotate vertically through all the loading brackets 61. A loading baffle 63 and a loading support plate 64 are respectively arranged on both sides of each loading bracket 61 near the position of the loading conveyor roller 1. The loading baffle 63 is fixed on the loading shaft 62, and the middle part of the loading support plate 64 can be hinged on the loading bracket 61 in a lifting manner, and one end of the loading support plate 64 is hinged on the loading shaft 62.

[0067] The blank to be polished can be lifted to the loading rack 6 for temporary storage by means of a crane or other equipment. After the blank to be polished on the loading conveyor roller 1 is conveyed out, the loading baffle 63 can be controlled to deflect and release the obstruction to the blank to be polished on the loading bracket 61, so that the blank to be polished can be tilted along the top of the loading bracket 61 toward the position of the loading conveyor roller 1 and roll onto the loading support plate 64, and then the loading support plate 64 is controlled to cut the tilt on the loading conveyor roller 1, so that a blank to be polished can roll onto the loading conveyor roller 1.

[0068] Preferably, in this embodiment, the loading shaft 62 is rotated by the connecting rod driven by the cylinder, and a cylinder is also fixed under the loading support plate 64. The deflection of the loading baffle 63 is achieved by the cylinder driving the connecting rod to push the loading shaft 62 to rotate, and the tilting deflection of the loading support plate 64 is achieved by the lower cylinder driving the middle part of the loading support plate 64 to rise and fall.

[0069] Preferably, see Figure 2The feeding conveying roller 1 includes a feeding roller seat 11 and a feeding base 12. A plurality of rollers 13 are arranged at parallel intervals on the top of the feeding roller seat 11. All rollers 13 are connected to the motor transmission at the bottom of the feeding roller seat 11 through a chain drive. The feeding base 12 is arranged on the horizontal ground of the workshop and is fixed with a lifting drive assembly 14. The driving end of the lifting drive assembly 14 is connected to the bottom of the feeding roller seat 11.

[0070] A lifting drive assembly 14 is provided on the loading and conveying roller 1 so that the height of the loading roller seat 11 equipped with the roller 13 can be adjusted, so that it can work better with the loading rack 6 and adapt to different rods, and avoid the large height difference between the loading rack 6 and the loading and conveying roller 1, which causes the to-be-polished blank to be transferred from the loading rack 6 to the loading and conveying roller 1 by falling, thereby protecting the surface quality of the to-be-polished blank and extending the service life of the loading and conveying roller 1.

[0071] Preferably, in this embodiment, the lifting drive assembly 14 is a cylinder.

[0072] Preferably, see Fig.14 The external cylindrical centerless abrasive belt polishing machine of this embodiment also includes a feed rack 7, which includes a feed rack 71, a first feed shaft 72 and a second feed shaft 73. A plurality of feed racks 71 are arranged in parallel and at equal intervals at one side edge of the straight extension direction of the feed conveyor roller 5. The top of the feed rack 71 is concave on the side away from the feed conveyor roller 5 to form a storage groove 74. The first feed shaft 72 and the second feed shaft 73 can both rotate vertically through all the feed racks 71, and the first feed shaft 72 is arranged close to the feed conveyor roller 5, and the second feed shaft 73 is arranged away from the feed conveyor roller 5. A plurality of material shifting plates 75 are fixed at intervals on the first feed shaft 72, and a plurality of material support racks 76 are fixed at intervals on the second feed shaft 73. Each material shifting plate 75 and each material support rack 76 are respectively arranged close to a feed rack 71.

[0073] After the polished blank is completely moved onto the unloading conveyor roller 5, the polished blank can be transferred to the initial state of the support rack 76 by controlling the material transfer plate 75 to deflect and lift from under the blank. After enough blanks are placed on the support rack 76, the support rack 76 is controlled to deflect into the storage slot 74, so that the blanks on the support rack 76 can be stored in the storage slot 74.

[0074] Preferably, in this embodiment, an oil cylinder is provided below the material stripping plate 75, and the driving end of the oil cylinder is hinged to one end of the material stripping plate 75. The first material stripping shaft 72 rotates together with the material stripping plate 75 driven by the oil cylinder, and the second material stripping shaft 73 rotates through the connecting rod driven by the hydraulic cylinder. The supporting frame 76 is fixed on the second material stripping shaft 73 and can thus rotate together with the second material stripping shaft 73.

[0075] It should be noted that see Fig.10 In this embodiment, the specific design of the unloading conveyor roller 5 is the same as the above-mentioned loading conveyor roller 1, which will not be repeated here. The height of the unloading conveyor roller 5 is adjustable to adapt to different rods, avoiding the large height difference between the unloading rack 7 and the unloading conveyor roller 5, which makes it impossible for the polished blank to be transferred to the unloading rack 7 through the material transfer plate 75.

[0076] Preferably, see Fig.14 The top of the unloading bracket 71, the top of the material shifting plate 75 and the top of the material supporting frame 76 are all paved with an anti-scratch buffer layer 77 to protect the polished surface of the blank and prevent scratches from affecting product quality.

[0077] Preferably, in this embodiment, the anti-scratch buffer layer 77 is a nylon plate.

[0078] Preferably, the feeding conveyor roller 1, the clamping device 2, the polishing device 3, the extraction device 4, the unloading conveyor roller 5, the feeding rack 6 and the unloading rack 7 are all electrically driven and controlled by the same PLC controller. The setting of the PLC controller can realize the program automatic control of multiple devices on the external cylindrical centerless abrasive belt polishing machine, thereby improving production efficiency.

[0079] Preferably, see Figure 3 and Figure 4 The clamping device 2 includes a clamping frame 21, a telescopic driving assembly 22 and a swing arm 23. The clamping frame 21 is arranged on the horizontal ground of the workshop. Two transversely arranged independent cavities 24 are opened inside the clamping frame 21. A telescopic driving assembly 22 is hinged above each independent cavity 24. Two swing arms 23 with external teeth meshing along the height direction are arranged in each independent cavity 24. A clamping roller 25 driven by a motor is arranged on the swing end of each swing arm 23, and the swing arm 23 located at the top is hinged to the driving end of the telescopic driving assembly 22 at the swing end.

[0080] When the clamping device 2 is in use, the upper swing arm 23 is pulled to rotate by the telescopic driving component 22, and the lower swing arm 23 can be driven to rotate synchronously through external engagement, so that the upper and lower clamping rollers 25 can approach or move away from each other, and the blank is located between the two clamping rollers 25. The clamping rollers 25 rotate under the drive of the motor, and then the blank is driven to be transported through friction extrusion.

[0081] Preferably, in this embodiment, the telescopic drive assembly 22 adopts an oil cylinder.

[0082] It should be noted that, in the present embodiment, the extraction device 4 and the clamping device 2 adopt the same design, and therefore, the specific form of the extraction device 4 will not be described in detail herein.

[0083] Preferably, see Figure 5 and Fig. 9 The abrasive belt polishing assembly 32 includes a mounting seat 321, a polishing wheel 322, a tensioning wheel 323 and an abrasive belt 324. The two polishing wheels 322 are rotatably vertically arranged at the two ends of the mounting seat 321, and a tensioning wheel 323 is rotatably vertically arranged in the middle of the mounting seat 321. The abrasive belt 324 circumferentially covers the two polishing wheels 322 and the tensioning wheel 323 in a taut state. One end of the mounting seat 321 is hinged to one side of the through hole 31, and the other end is hinged to the driving end of the linear drive assembly 33. The polishing wheel 322 located at the hinge point of the mounting seat 321 rotates under the drive of the gear transmission assembly 34.

[0084] When the abrasive belt polishing assembly 32 is working, the linear drive assembly 33 is used to adjust the abrasive belt 324 to abut against the outer circle of the blank, and then the gear transmission assembly 34 drives the polishing wheel 322, the tensioning wheel 323 and the abrasive belt 324 to rotate synchronously, so that the abrasive belt 324 polishes the outer surface of the blank; in addition, the grinding amount of the blank can also be adjusted by adjusting the abutment degree of the abrasive belt 324 and the blank.

[0085] Preferably, in this embodiment, the linear drive assembly 33 adopts an electric push rod.

[0086] Preferably, see Figure 5 , Figure 6 and Fig. 9 The gear transmission assembly 34 includes a spindle seat 341 and a turntable 342. The spindle seat 341 is set on the horizontal ground of the workshop. A fixed gear 343 is set at one axial end of the spindle seat 341, and a spindle 344 is rotatably axially penetrated on the spindle seat 341. The turntable 342 is axially fixed on the spindle 344 adjacent to the fixed gear 343. The through hole 31 simultaneously penetrates the turntable 342 and the spindle 344. The spindle 344 is connected to the rotation drive assembly 35 in transmission connection. One end of the mounting seat 321 is hinged on the turntable 342. The axle of the polishing wheel 322 located at the hinge point of the mounting seat 321 passes through the turntable 342 and meshes with the fixed gear 343 through the moving gear 345. The other end of the mounting seat 321 is hinged to the driving end of the linear drive assembly 33, and the linear drive assembly 33 is set on the turntable 342. Through the external meshing of the movable gear 345 and the fixed gear 343, the abrasive belt polishing assembly 32 can realize the synchronous rotation of the polishing wheel 322, the tensioning wheel 323 and the abrasive belt 324 while rotating synchronously with the turntable 342, so as to polish the circumferential periphery of the blank driven by the main shaft 344.

[0087] Preferably, see Figure 6In this embodiment, the rotation driving component 35 includes a driving synchronous pulley 351, a driven synchronous pulley 352, a synchronous belt 353 and a Y-type motor 354. The driving synchronous pulley 351 is arranged at the driving end of the Y-type motor 354, the driven synchronous pulley 352 is arranged on the main shaft 344, and the synchronous belt 353 is wound around the driving synchronous pulley 351 and the driven synchronous pulley 352. The synchronous belt 353 drives the driving synchronous pulley 351 and the driven synchronous pulley 352 to rotate synchronously.

[0088] Preferably, see Figure 7 and Figure 8 The outer cover of the polishing device 3 is provided with a transparent cubic protective cover 36, one side of the protective cover 36 is provided with a double-opening sliding door 361, and the other side of the protective cover 36 opposite to the sliding door 361 is provided with an avoidance hole 362, and the aperture of the avoidance hole 362 is consistent with the aperture of the through hole 31. The protective cover 36 can protect the polishing device 3, and the arrangement of the sliding door 361 and the avoidance hole 362 can allow the blank to pass through the through hole 31, and facilitate the later inspection and maintenance of the polishing device 3.

[0089] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An external cylindrical centerless abrasive belt polisher, characterized in that: The invention comprises a feeding conveying roller (1), a clamping device (2), a polishing device (3), a pulling device (4) and a feeding conveying roller (5), wherein the feeding conveying roller (1), the clamping device (2), the polishing device (3), the pulling device (4) and the feeding conveying roller (5) are arranged in sequence from left to right on the horizontal floor of the workshop along a straight line, and the polishing device (3) is provided with a through hole (31), a sand belt polishing component (32) and a linear drive component (33), the through hole (31) is connected with the clamping device (2) and the pulling device (4), and the diameter of the through hole (31) is greater than 265 mm, and the two One end of the abrasive belt polishing assembly (32) is hingedly arranged at the clamping device (2) on both sides of the through hole (31), and the other ends of the two abrasive belt polishing assemblies (32) are respectively hingedly connected to the driving end of one of the linear drive assemblies (33). The two linear drive assemblies (33) are respectively fixed on both sides of the through hole (31). The two abrasive belt polishing assemblies (32) and the two linear drive assemblies (33) rotate around the through hole (31) as a whole, and the two abrasive belt polishing assemblies (32) can be deflected toward the through hole (31) around the hinge point under the drive of the two linear drive assemblies (33).

2. The external cylindrical centerless abrasive belt polishing machine according to claim 1, characterized in that: The invention also comprises a loading rack (6), wherein the loading rack (6) comprises a loading bracket (61) and a loading rotating shaft (62), wherein a plurality of the loading brackets (61) are arranged in parallel and at equal intervals on one side edge of the straight extension direction of the loading conveying roller (1), and the top of each loading bracket (61) extends obliquely downward near the position of the loading conveying roller (1), and the loading rotating shaft (62) can rotatably pass through all the loading brackets (61) vertically, and each of the two sides of the loading bracket (61) is respectively provided with a loading baffle (63) and a loading support plate (64) near the position of the loading conveying roller (1), wherein the loading baffle (63) is fixed on the loading rotating shaft (62), and the middle part of the loading support plate (64) can be hinged on the loading bracket (61) in a lifting manner, and one end of the loading support plate (64) is hinged on the loading rotating shaft (62).

3. The outer cylindrical centerless abrasive belt polisher according to claim 2, characterized in that: The feeding conveying roller (1) comprises a feeding roller seat (11) and a feeding base (12); a plurality of rollers (13) are arranged in parallel and spaced relation on the top of the feeding roller seat (11); all the rollers (13) are connected to the motor at the bottom of the feeding roller seat (11) through a chain drive; the feeding base (12) is arranged on the horizontal ground of the workshop and is fixed with a lifting drive assembly (14); the driving end of the lifting drive assembly (14) is connected to the bottom of the feeding roller seat (11).

4. The outer cylindrical centerless abrasive belt polishing machine according to claim 2, characterized in that: The material discharging device further comprises a material discharging rack (7), wherein the material discharging rack (7) comprises a material discharging bracket (71), a first material discharging rotating shaft (72) and a second material discharging rotating shaft (73), wherein a plurality of the material discharging brackets (71) are arranged in parallel and at equal intervals on one side edge of the straight extension direction of the material discharging conveying roller (5), and the top of the material discharging bracket (71) is concave on the side away from the material discharging conveying roller (5) to form a storage groove (74), and the first material discharging rotating shaft (72) and the second material discharging rotating shaft (73) are both rotatable to vertically penetrate the material discharging roller (5) and the material discharging conveying roller (5) to rotate. The first material unloading shaft (72) is arranged close to the material unloading conveying roller (5), and the second material unloading shaft (73) is arranged away from the material unloading conveying roller (5). A plurality of material unloading plates (75) are fixed at intervals on the first material unloading shaft (72), and a plurality of material supporting racks (76) are fixed at intervals on the second material unloading shaft (73). Each of the material unloading plates (75) and each of the material supporting racks (76) are respectively arranged close to one of the material unloading brackets (71).

5. The outer cylindrical centerless abrasive belt polishing machine according to claim 4, characterized in that: The top of the unloading bracket (71), the top of the material shifting plate (75) and the top of the material supporting frame (76) are all paved with an anti-scratch buffer layer (77).

6. The external cylindrical centerless abrasive belt polishing machine according to claim 4, characterized in that: The loading conveying roller (1), the clamping device (2), the polishing device (3), the extraction device (4), the unloading conveying roller (5), the loading rack (6) and the unloading rack (7) are all electrically driven and controlled by the same PLC controller.

7. The external cylindrical centerless abrasive belt polisher according to claim 1, characterized in that: The clamping device (2) comprises a clamping frame (21), a telescopic drive assembly (22) and a swing arm (23). The clamping frame (21) is arranged on the horizontal ground of the workshop. Two transversely arranged independent cavities (24) are provided inside the clamping frame (21). A telescopic drive assembly (22) is hinged above each of the independent cavities (24). Two swing arms (23) with external teeth meshing in the height direction are arranged in each of the independent cavities (24). A clamping roller (25) driven by a motor is arranged on the swing end of each of the swing arms (23), and the swing arm (23) located above is hinged to the drive end of the telescopic drive assembly (22) at the swing end.

8. The external cylindrical centerless abrasive belt polishing machine according to claim 1, characterized in that: The abrasive belt polishing assembly (32) comprises a mounting seat (321), a polishing wheel (322), a tensioning wheel (323) and an abrasive belt (324); two polishing wheels (322) are rotatably arranged vertically at two ends of the mounting seat (321); one tensioning wheel (323) is rotatably arranged vertically at the middle of the mounting seat (321); the abrasive belt (324) circumferentially covers the two polishing wheels (322) and the one tensioning wheel (323) in a taut state; one end of the mounting seat (321) is hinged to one side of the through hole (31) and the other end is hinged to the driving end of the linear drive assembly (33); the polishing wheel (322) located at the hinge point of the mounting seat (321) rotates under the drive of the gear transmission assembly (34).

9. The external cylindrical centerless abrasive belt polishing machine according to claim 8, characterized in that: The gear transmission assembly (34) comprises a main shaft seat (341) and a rotating disk (342), wherein the main shaft seat (341) is arranged on a horizontal floor of a workshop, a fixed gear (343) is arranged at one axial end of the main shaft seat (341), and a main shaft (344) is rotatably axially penetrated on the main shaft seat (341), the rotating disk (342) is axially fixed on the main shaft (344) in close proximity to the fixed gear (343), and the through hole (31) simultaneously penetrates the rotating disk (342) and the main shaft (344) The main shaft (344) is connected to the rotating drive assembly (35) in a transmission manner. One end of the mounting seat (321) is hinged on the turntable (342). The axle of the polishing wheel (322) located at the hinge point of the mounting seat (321) passes through the turntable (342) and is externally meshed with the fixed gear (343) through a movable gear (345). The other end of the mounting seat (321) is hinged to the driving end of the linear drive assembly (33). The linear drive assembly (33) is arranged on the turntable (342).

10. The external cylindrical centerless abrasive belt polisher according to claim 1, characterized in that: The outer cover of the polishing device (3) is provided with a transparent cubic protective cover (36), one side of the protective cover (36) is provided with a double-opening sliding door (361), and the other side of the protective cover (36) opposite to the sliding door (361) is provided with an avoidance hole (362), and the aperture of the avoidance hole (362) is consistent with the aperture of the through hole (31).

Images