Ultra-fine automatic feeding and unloading centerless grinder

Abstract

The present application discloses an ultra-fine automatic feeding and discharging centerless grinder, including a support platform, a conveyor, a guide wheel assembly, a grinding wheel assembly, a lifting assembly, a driving mechanism, a limit grinding mechanism, a proximity sensor and a controller, wherein the conveyor is arranged on the support platform; the guide wheel assembly and the grinding wheel assembly are movably arranged side by side on the support platform; the lifting assembly is arranged on the support platform, and the lifting assembly is arranged between the guide wheel assembly and the grinding wheel assembly; the driving mechanism and the limit grinding mechanism are respectively arranged on the support platform, and one end of the driving mechanism is connected to the grinding wheel assembly, and the other end of the driving mechanism is connected to the limit grinding mechanism; the limit grinding mechanism is arranged on the opposite side of the conveyor. Thus, while reducing the equipment cost, it can not only play a role in limiting the quartz tube during the processing process, ensure the stability of the quartz tube during processing, reduce the probability of defective products, and improve the accuracy during grinding, but also can grind the inner wall and outer wall of the quartz tube at the same time, saving time and effort.

Description

Technical Field

[0001] The present application relates to the technical field of quartz tube grinding, and in particular to an ultra-fine centerless grinder with automatic feeding and discharging. Background Art

[0002] Quartz tubes are widely used in fiber optic communications, electronic components and other fields, and the market demand is growing. Since some quartz tubes are used in high-precision measurements or optical experiments in the optical field, the inner and outer walls of the quartz tubes need to be ground and polished.

[0003] At present, centerless grinders are often used to grind the outer wall of quartz tubes. Centerless grinders are grinders that do not require the axis positioning of the workpiece. They are composed of three mechanisms: grinding wheel, adjusting wheel and workpiece holder. However, cylindrical error often occurs during the grinding of quartz tubes. This is mainly due to the position change or vibration of the workpiece during the grinding process, which will increase the probability of defective quartz tubes. In addition, the existing centerless grinders can only meet the needs of grinding the outer wall of quartz tubes, while for the grinding of the inner wall of quartz tubes, different equipment is required to operate, which not only increases the equipment cost, but also increases the cost of grinding quartz tubes. At the same time, the equipment replacement operation process is cumbersome, time-consuming and labor-intensive. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, one purpose of the present application is to propose an ultra-fine automatic feeding and unloading centerless grinder, which can reduce the equipment cost while being able to limit the quartz tube during the processing process, ensure the stability of the quartz tube during processing, reduce the probability of defective products, and improve the accuracy during grinding, and can grind the inner and outer walls of the quartz tube at the same time, saving time and effort.

[0006] To achieve the above-mentioned objectives, the first aspect of the present application proposes an ultra-fine automatic feeding and discharging centerless grinder, comprising a support table, a conveyor, a guide wheel assembly, a grinding wheel assembly, a lifting assembly, a driving mechanism, a limit grinding mechanism, a proximity sensor and a controller, wherein the conveyor is arranged on the support table, and the conveyor is used to convey and output the workpiece to be ground; the guide wheel assembly and the grinding wheel assembly are movably arranged side by side on the support table; the lifting assembly is arranged on the support table, and the lifting assembly is arranged between the guide wheel assembly and the grinding wheel assembly; the driving mechanism and the limit grinding mechanism are respectively arranged on the support table, and one end of the driving mechanism is connected to the grinding wheel assembly, and the other end of the driving mechanism is connected to the limit grinding mechanism, and the driving mechanism is used to simultaneously drive the grinding wheel The lifting assembly and the limit grinding mechanism operate to grind the inner wall and the outer wall of the workpiece to be grinded at the same time; the limit grinding mechanism is arranged on the opposite side of the conveyor, and the limit grinding mechanism is used to limit the workpiece to be grinded and grind the inner wall of the workpiece to be grinded; the proximity sensor is arranged on the lifting assembly, and the proximity sensor is arranged adjacent to the conveyor, and the proximity sensor is used to collect position information close to the workpiece to be grinded to generate a position signal; the controller is arranged on the support table, and the controller is respectively connected to the conveyor, the guide wheel assembly, the grinding wheel assembly, the driving mechanism and the proximity sensor, and the controller is used to control the conveyor, the guide wheel assembly, the grinding wheel assembly and the driving mechanism according to the position signal.

[0007] The ultra-fine automatic feeding and discharging centerless grinder of the embodiment of the present application uses a controller to control the conveyor, guide wheel assembly, grinding wheel assembly and drive mechanism according to the position signal, which can not only limit the quartz tube during the processing, ensure the stability of the quartz tube during processing, reduce the probability of defective products, and improve the accuracy during grinding, but also can grind the inner and outer walls of the quartz tube at the same time, saving time and effort, and the intelligent control and double grinding can effectively improve the grinding accuracy of the quartz tube.

[0008] In addition, the ultra-fine automatic feeding and discharging centerless grinder proposed in the present application may also have the following additional technical features:

[0009] In one embodiment of the present application, the guide wheel assembly includes a first shell, a guide wheel, a first motor and a first drive assembly, wherein the first shell is slidably arranged on the support platform; the first motor is arranged on the first shell, and the output shaft of the first motor passes through the side wall of the first shell; one end of the guide wheel is rotatably connected in the first shell, and the other end of the guide wheel is fixedly connected to the output shaft of the first motor; the first drive assembly is arranged on the support platform, and the first drive assembly is rotatably connected to the first shell; the grinding wheel assembly includes a second shell, a grinding wheel and a second drive assembly, wherein the second shell is slidably arranged on the support platform; the grinding wheel is rotatably arranged in the second shell, and the two ends of the grinding wheel extend through the inner wall of the second shell respectively; the second drive assembly is arranged on the support platform, and the second drive assembly is rotatably connected to the second shell.

[0010] In one embodiment of the present application, the lifting assembly includes a support plate and a mounting shell, wherein the mounting shell is disposed on the support platform; the support plate is fixed in the mounting shell by external threaded fasteners, and an inclined blade is disposed on the top of the support plate.

[0011] In one embodiment of the present application, the driving mechanism includes a second motor and a first sprocket, wherein:

[0012] The second motor has two output ends, one output end of the second motor is fixedly connected to the extended end of the grinding wheel, and the other output end of the second motor is fixedly connected to the first sprocket.

[0013] In one embodiment of the present application, the limit grinding mechanism includes a screw rod, a bearing seat, a ball sleeve, a second sprocket, a plurality of limit grinding assemblies, a cross slider and a spring, wherein the bearing seat is arranged on the support platform; the ball sleeve is arranged in the bearing seat, and the second sprocket is installed on the outer wall of the ball sleeve, and the second sprocket is connected to the first sprocket by chain transmission; the screw rod is threadedly connected to the ball sleeve, and a plurality of slide grooves are provided on the outer wall of the screw rod adjacent to one end of the lifting assembly; a cavity is arranged in the screw rod, and the cavity is respectively connected to the plurality of slide grooves; one end of the same side of the plurality of limit grinding assemblies is respectively hinged in the corresponding slide groove, the other end of the same side of the plurality of limit grinding assemblies slides in the corresponding slide groove, and the other end of the same side of the plurality of limit grinding assemblies is respectively fixedly connected to the cross slider; the cross slider slides in the cavity; one end of the spring is fixed in the cavity, and the other end of the spring is fixedly connected to the cross slider.

[0014] In one embodiment of the present application, the limit grinding assembly includes a V-shaped plate, a roller, a grinding block, a connecting plate and a slider, wherein one end of the V-shaped plate is hinged in the slide groove, and a mounting hole is opened on the surface of the V-shaped plate; the roller is rotatably arranged in the mounting hole; the grinding block is detachably arranged on the V-shaped plate; one end of the connecting plate is hinged to the lower surface of the V-shaped plate, and the other end of the connecting plate is hinged to the slider, and the slider is slidably arranged in the slide groove.

[0015] In one embodiment of the present application, the above-mentioned ultra-fine automatic feeding and discharging centerless grinder further includes a limiting sleeve, the limiting sleeve is arranged on the supporting platform, and one end of the screw rod slides through the limiting sleeve.

[0016] In one embodiment of the present application, the above-mentioned ultra-fine automatic feeding and discharging centerless grinder also includes a cooling mechanism, which includes a water pump, a hose, a water tank, a connecting pipe, a nozzle and a mounting plate, wherein the water pump and the mounting plate are respectively arranged on the support platform, the water inlet end of the water pump is connected to the hose, and the water outlet end of the water pump is connected to the connecting pipe; the end of the hose away from the water pump is connected to the water tank, and the water tank is arranged under the support platform; the connecting pipe is fixed on the mounting plate, and the end of the connecting pipe away from the water pump is connected to the nozzle, and the nozzle faces the grinding wheel assembly; the water pump is connected to the controller.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of an ultra-fine automatic feeding and discharging centerless grinder according to an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of the positional relationship structure of the guide wheel assembly, the grinding wheel assembly and the lifting assembly according to one embodiment of the present application;

[0021] Figure 3 It is a structural schematic diagram of a position-limiting grinding mechanism according to an embodiment of the present application;

[0022] Figure 4 According to one embodiment of the present application Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0023] Figure 5 It is a schematic structural diagram of a position-limiting grinding mechanism according to another embodiment of the present application.

[0024] As shown in the figure: 1. Support platform; 2. Conveyor; 3. Guide wheel assembly; 4. Grinding wheel assembly; 5. Lifting assembly; 6. Driving mechanism; 7. Limit grinding mechanism; 8. Proximity sensor; 9. Controller; 10. Cooling mechanism; 30. First housing; 31. Guide wheel; 32. First motor; 33. First driving assembly; 40. Second housing; 41. Grinding wheel; 42. Second driving assembly; 50. Support plate; 51. Mounting shell; 60. Second motor; 61. First sprocket; 70 , screw rod; 71, bearing seat; 72, ball sleeve; 73, second sprocket; 74, limit grinding assembly; 75, cross slider; 76, spring; 77, limit sleeve; 100, water pump; 101, hose; 102, water tank; 103, connecting pipe; 104, nozzle; 105, mounting plate; 700, slide groove; 701, cavity; 740, V-shaped plate; 741, roller; 742, grinding block; 743, connecting plate; 744, slider; 7400, mounting hole. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0026] The following describes the ultra-fine automatic feeding and discharging centerless grinder according to the embodiment of the present application in conjunction with the accompanying drawings.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the ultra-precision automatic feeding and discharging centerless grinder of the embodiment of the present application may include a support table 1, a conveyor 2, a guide wheel assembly 3, a grinding wheel assembly 4, a lifting assembly 5, a driving mechanism 6, a limit grinding mechanism 7, a proximity sensor 8 and a controller 9.

[0028] The conveyor 2 is arranged on the support platform 1, and the conveyor 2 is used for conveying and outputting the workpiece to be polished.

[0029] It should be noted that the conveying height of the conveyor 2 is equal to the lifting height of the lifting assembly 5, so as to facilitate the entry of the workpiece to be polished.

[0030] As a possible situation, the conveyor 2 described in this embodiment is provided with two symmetrically arranged fences for limiting the workpieces to be polished (such as quartz tubes) being conveyed, thereby ensuring the stability of the quartz tubes during the conveying process.

[0031] The guide wheel assembly 3 and the grinding wheel assembly 4 are movably arranged side by side on the support platform 1, the lifting assembly 5 is arranged on the support platform 1, and the lifting assembly 5 is arranged between the guide wheel assembly 3 and the grinding wheel assembly 4, the driving mechanism 6 and the limit grinding mechanism 7 are respectively arranged on the support platform 1, and one end of the driving mechanism 6 is connected to the grinding wheel assembly 4, and the other end of the driving mechanism 6 is connected to the limit grinding mechanism 7, the driving mechanism 6 is used to simultaneously drive the grinding wheel assembly 4 and the limit grinding mechanism 7 to operate so as to grind the inner wall and the outer wall of the workpiece to be grinded at the same time, the limit grinding mechanism 7 is arranged on the opposite side of the conveyor 2, the limit grinding mechanism 7 is used to limit the workpiece to be grinded and grind the inner wall of the workpiece to be grinded, the proximity sensor 8 is arranged on the lifting assembly 5, and the proximity sensor 8 is arranged near the conveyor 2, and the proximity sensor 8 is used to collect position information close to the workpiece to be grinded to generate a position signal.

[0032] The controller 9 is disposed on the support platform 1, and the controller 9 is respectively connected to the conveyor 2, the guide wheel assembly 3, the grinding wheel assembly 4, the driving mechanism 6, and the proximity sensor 8. The controller 9 is used to control the conveyor 2, the guide wheel assembly 3, the grinding wheel assembly 4, and the driving mechanism 6 according to the position signal.

[0033] It should be noted that the controller 9 described in this embodiment can be connected to an external host computer by wire or wireless means to receive signals sent by the external host computer, thereby controlling the controller 9. The controller 9 may include a display screen and input buttons, which are convenient for relevant personnel to view the operating data of the ultra-fine automatic feeding and unloading centerless grinder through the display screen, and at the same time, the controller 9 can be adjusted conveniently through the input buttons.

[0034] Specifically, when actually grinding the workpiece to be ground (such as a quartz tube), first, the relevant personnel place the workpiece to be ground on the conveyor 2, and use the conveyor 2 to carry out directionally conveying the workpiece to be ground. If the proximity sensor 8 detects the workpiece to be ground during the conveying process (that is, at this time, it indicates that the workpiece to be ground contacts the guide wheel assembly 3, the grinding wheel assembly 4 and the lifting assembly 5 at the same time), a position signal is generated and sent to the controller 9, and the controller 9 controls the guide wheel assembly 3 and the driving mechanism 6 to operate, and the driving mechanism 6 drives the grinding wheel assembly 4 and the limit grinding mechanism 7 to operate, and the grinding wheel assembly 4 cooperates with the guide wheel assembly 3 to realize the feeding of the workpiece to be ground, and in the process of moving the workpiece to be ground, the grinding wheel assembly 4, the guide wheel assembly 3 and the lifting assembly 5 cooperate to realize the feeding of the workpiece to be ground. The outer wall of the workpiece to be polished is polished, and the workpiece being polished is driven to move in the direction of the limit grinding mechanism 7 while polishing. At the same time, under the drive of the driving mechanism 6, the limit grinding mechanism 7 moves to one side of the conveyor 2 to form a counterattack with the workpiece being polished. When the polishing end of the limit grinding mechanism 7 contacts the workpiece being polished, the polishing end of the limit grinding mechanism 7 can adapt itself and enter the inner wall of the workpiece being polished, forming a support limit for the workpiece being polished, which can not only limit the workpiece being polished, but also reduce the probability of position change of the workpiece during the grinding process, ensure the stability of the quartz tube during processing, and reduce the probability of defective products, but also can polish the inner wall of the workpiece while limiting, saving time and effort.

[0035] When the proximity sensor 8 cannot detect the workpiece to be polished (that is, this moment represents the completion of the first polishing of the workpiece), and generates a new position signal to send to the controller 9, the controller 9 controls the driving mechanism 6, the guide wheel assembly 3 and the conveyor 2 to run in the opposite direction according to the new position signal, so that the polishing end of the limit grinding mechanism 7 moves in the direction away from the conveyor 2, and the workpiece being polished moves in the direction of the conveyor 2 for secondary polishing, thereby achieving the purpose of ultra-fine polishing, and the workpiece after the secondary polishing is output to the next workstation under the conveyance of the conveyor 2, and when the proximity sensor 8 cannot detect the workpiece to be polished again (that is, this moment represents the completion of the second polishing of the workpiece and is moved away under the conveyance of the conveyor 2), the controller 9 controls the driving mechanism 6 and the guide wheel assembly 3 to stop running, avoiding long-term operation, which can effectively save electricity and reduce polishing costs.

[0036] When the workpiece is polished next time, the conveying direction of the conveyor 2 is manually adjusted, and the conveyor 2 is used to directionally convey the workpiece to be polished. The subsequent operation is as described above, and so on, in a cycle.

[0037] In one embodiment of the present application, Figure 2 As shown, the guide wheel assembly 3 may include a first housing 30 , a guide wheel 31 , a first motor 32 and a first driving assembly 33 .

[0038] Among them, the first shell 30 is slidably set on the support platform 1. It can be understood that a sliding groove can be opened on the support platform 1, a slider slides in the sliding groove, and the slider is connected to the first shell 30, so that the first shell 30 is slidably set on the support platform 1.

[0039] The first motor 32 is disposed on the first housing 30 , and an output shaft of the first motor 32 passes through a side wall of the first housing 30 .

[0040] It should be noted that the first motor 32 described in this embodiment is a forward and reverse motor, and the controller 9 controls the forward and reverse rotation of the first motor 32 to change the rotation direction of the guide wheel 31.

[0041] One end of the guide wheel 31 is rotatably connected in the first shell 30 , and the other end of the guide wheel 31 is fixedly connected to the output shaft of the first motor 32 . The first driving component 33 is disposed on the support platform 1 , and the first driving component 33 is rotatably connected to the first shell 30 .

[0042] The grinding wheel assembly 4 includes a second housing 40 , a grinding wheel 41 and a second driving assembly 42 , wherein the second housing 40 is slidably disposed on the supporting platform 1 .

[0043] It is understandable that a slide groove may be provided on the support platform 1 , a slider slides in the slide groove, and the slider is connected to the second shell 40 , so that the second shell 40 is slidably arranged on the support platform 1 .

[0044] The grinding wheel 41 is rotatably disposed in the second housing 40 , and both ends of the grinding wheel 41 extend through the inner wall of the second housing 40 , respectively. The second driving assembly 42 is disposed on the support platform 1 , and the second driving assembly 42 is rotatably connected to the second housing 40 .

[0045] It should be noted that the first drive assembly 33 and the second drive assembly 42 described in this embodiment both include a bearing seat, a screw and a threaded sleeve, that is, the bearing seat is installed on the support platform 1, the threaded sleeve is connected in the bearing seat, and the screw is threadedly connected to the threaded sleeve. By rotating the screw, the corresponding first shell 30 or the second shell 40 can be pushed to move, thereby changing the position distance between the two, thereby adapting to workpieces of different pipe diameters.

[0046] Specifically, the driving mechanism 6 can drive the grinding wheel 41 to rotate at high speed for grinding, and at the same time, the first motor 32 can drive the guide wheel 31 to rotate in the same direction at a slower speed, thereby driving the workpiece to rotate and perform circular feeding. During centerless grinding, the center of the workpiece must be higher or lower than the center line of the grinding wheel 41 and the guide wheel 31, so that the contact points between the workpiece and the grinding wheel 41 and the guide wheel 31 are asymmetrical, and certain raised surfaces on the workpiece can be gradually rounded during multiple rotations.

[0047] In one embodiment of the present application, Figure 2 As shown, the lifting assembly 5 may include a supporting plate 50 and a mounting shell 51 .

[0048] The mounting shell 51 is disposed on the support platform 1 , the support plate 50 is fixed in the mounting shell 51 by external threaded fasteners, and an inclined blade is disposed on the top of the support plate 50 .

[0049] It can be understood that the threaded fasteners described in this embodiment can be bolts or screws, that is, by rotating the bolts or screws, the support plate 50 can be pressed against, thereby fixing the support plate 50. In addition, the support plate 50 can be easily replaced by rotating the threaded fasteners, which is simple to operate and easy to install and disassemble.

[0050] In one embodiment of the present application, Figure 1 As shown, the driving mechanism 6 may include a second motor 60 and a first sprocket 61 .

[0051] The second motor 60 has two output ends, one output end of the second motor 60 is fixedly connected to the extended end of the grinding wheel 41 , and the other output end of the second motor 60 is fixedly connected to the first sprocket 61 .

[0052] It should be noted that the second motor 60 described in this embodiment is a dual-axis motor capable of forward and reverse rotation. The rotation direction of the grinding wheel 41 and the moving direction of the grinding end of the limit grinding mechanism 7 can be changed by controlling the forward or reverse rotation of the second motor 60.

[0053] In one embodiment of the present application, Figure 3 As shown, the position-limiting grinding mechanism 7 may include a screw 70 , a bearing seat 71 , a ball sleeve 72 , a second sprocket 73 , a plurality of position-limiting grinding assemblies 74 , a cross slide 75 and a spring 76 .

[0054] Among them, the bearing seat 71 is arranged on the support platform 1, the ball sleeve 72 is arranged in the bearing seat 71, and a second sprocket 73 is installed on the outer wall of the ball sleeve 72, the second sprocket 73 is connected to the first sprocket 61 through a chain transmission, the screw rod 70 is threadedly connected to the ball sleeve 72, and a plurality of slide grooves 700 are opened on the outer wall of the screw rod 70 near one end of the lifting component 5, a cavity 701 is arranged in the screw rod 70, and the cavity 701 is respectively connected to the plurality of slide grooves 700, one end of the same side of the plurality of limit grinding assemblies 74 is respectively hinged in the corresponding slide grooves 700, the other end of the same side of the plurality of limit grinding assemblies 74 slides in the corresponding slide grooves 700, and the other end of the same side of the plurality of limit grinding assemblies 74 is respectively fixedly connected to the cross slider 75, the cross slider 75 slides in the cavity 701, one end of the spring 76 is fixed in the cavity 701, and the other end of the spring 76 is fixedly connected to the cross slider 75.

[0055] Specifically, in the process of actually controlling the operation of the limit grinding mechanism 7, the output shaft of the second motor 60 drives the grinding wheel 41 and the first sprocket 61 to rotate simultaneously. While the first sprocket 61 rotates, the ball sleeve 72 can be driven to rotate through the chain and the second sprocket 73, thereby driving the screw rod 70 to move in the direction of the conveyor 2, so as to cater to the workpiece being ground. The screw rod 70 drives multiple limit grinding components 74 to penetrate into the inner wall of the workpiece. The limit grinding components 74 are squeezed and push the cross slide block 75 to squeeze the spring 76. The elastic potential energy generated by the extrusion and deformation of the spring 76 pushes the cross slide block 75 to cooperate with the limit grinding component 74 to reversely extrude on the inner wall of the workpiece. Multiple limit grinding components 74 are supported together, which can not only play a role in limiting the workpiece, ensure the stability of the workpiece during processing, and reduce the problem of cylindricity error, but also can grind the inner wall of the workpiece, reduce the grinding cost of the workpiece, and save time and effort.

[0056] In one embodiment of the present application, Figure 4 As shown, the limited grinding assembly 74 may include a V-shaped plate 740 , a roller 741 , a grinding block 742 , a connecting plate 743 and a sliding block 744 .

[0057] Among them, one end of the V-shaped plate 740 is hinged in the slide groove 700, and a mounting hole 7400 is opened on the surface of the V-shaped plate 740, the roller 741 is rotatably set in the mounting hole 7400, the grinding block 742 is detachably set on the V-shaped plate 740, one end of the connecting plate 743 is hinged on the lower surface of the V-shaped plate 740, and the other end of the connecting plate 743 is hinged on the slider 744, and the slider 744 is slidably set in the slide groove 700.

[0058] Specifically, when the workpiece contacts the roller 741, one end of the screw rod 70 drills into the inner wall of the workpiece, and the workpiece presses down the V-shaped plate 740. While the V-shaped plate 740 is pressed down, it pushes the slider 744 to squeeze the spring 76 through the connecting plate 743. The elastic potential energy generated by the extrusion and deformation of the spring 76 pushes the cross slider 75 to cooperate with the slider 744 and the connecting plate 743 to push the grinding block 742 to squeeze on the inner wall of the workpiece. While the workpiece rotates, the grinding block 742 can be used to grind the inner wall of the workpiece, and the moving direction of the workpiece is opposite to that of the limit grinding assembly 74, thereby forming an offset to further improve the grinding effect on the inner wall of the workpiece.

[0059] Furthermore, if Figure 1 and Figure 3 As shown, the above-mentioned ultra-fine automatic feeding and unloading centerless grinder may also include a limiting sleeve 77, which is arranged on the support platform 1, and one end of the screw rod 70 slides through the limiting sleeve 77, wherein the limiting sleeve 77 can limit the screw rod 70, thereby further improving the stability of the screw rod 70 when moving.

[0060] Furthermore, if Figure 5 As shown, the above-mentioned ultra-fine automatic feeding and discharging centerless grinder may further include a cooling mechanism 10 , and the cooling mechanism 10 may include a water pump 100 , a hose 101 , a water tank 102 , a connecting pipe 103 , a nozzle 104 and a mounting plate 105 .

[0061] Among them, the water pump 100 and the mounting plate 105 are respectively arranged on the support platform 1, the water inlet end of the water pump 100 is connected to the hose 101, the water outlet end of the water pump 100 is connected to the connecting pipe 103, the end of the hose 101 away from the water pump 100 is connected to the water tank 102, the water tank 102 is arranged under the support platform 1, the connecting pipe 103 is fixed on the mounting plate 105, the end of the connecting pipe 103 away from the water pump 100 is connected to the nozzle 104, and the nozzle 104 faces the grinding wheel assembly 4, and the water pump 100 is connected to the controller 9.

[0062] It should be noted that the water tank 102 is filled with cutting fluid for cutting cooling, lubrication and flushing, etc. It can reduce friction and heat accumulation during the cutting process, reduce wear between the grinding wheel 41 and the workpiece, and improve the quality and precision of the machined surface.

[0063] Specifically, in the process of actually controlling the operation of the cooling mechanism 10, when the proximity sensor 8 detects the workpiece to be polished, the controller 9 controls the water pump 100 to operate, and the water pump 100 draws the cutting fluid in the water tank 102 through the hose 101 and sprays it from the connecting pipe 103 into the nozzle 104, and then sprays it onto the grinding wheel 41 through the nozzle 104 for cooling treatment. When the proximity sensor 8 cannot detect the workpiece to be polished (that is, the workpiece is transported away by the conveyor 2 at this time), the controller 9 controls the water pump 100 to stop running, thereby avoiding the continuous spraying of cutting fluid and causing waste of resources.

[0064] In summary, the ultra-fine automatic feeding and unloading centerless grinder of the embodiment of the present application can not only reduce the equipment cost, but also play a limiting role on the quartz tube during the processing, ensure the stability of the quartz tube during processing, reduce the probability of defective products, and improve the accuracy during grinding. At the same time, it can also grind the inner and outer walls of the quartz tube at the same time, saving time and effort.

[0065] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. An ultra-fine automatic feeding and discharging centerless grinder, characterized in that: It includes a support table, a conveyor, a guide wheel assembly, a grinding wheel assembly, a lifting assembly, a driving mechanism, a limit grinding mechanism, a proximity sensor and a controller, wherein: The conveyor is arranged on the support platform, and the conveyor is used to convey and output the workpiece to be polished; The guide wheel assembly and the grinding wheel assembly are movably arranged side by side on the support table; The lifting assembly is disposed on the supporting platform, and the lifting assembly is arranged between the guide wheel assembly and the grinding wheel assembly; The driving mechanism and the position-limiting grinding mechanism are respectively arranged on the supporting platform, and one end of the driving mechanism is connected to the grinding wheel assembly, and the other end of the driving mechanism is connected to the position-limiting grinding mechanism, and the driving mechanism is used to simultaneously drive the grinding wheel assembly and the position-limiting grinding mechanism to operate, so as to simultaneously grind the inner wall and the outer wall of the workpiece to be ground; The position-limiting grinding mechanism is arranged on the opposite side of the conveyor, and the position-limiting grinding mechanism is used to limit the position of the workpiece to be ground and to grind the inner wall of the workpiece to be ground; The proximity sensor is disposed on the lifting assembly and arranged adjacent to the conveyor. The proximity sensor is used to collect position information close to the workpiece to be polished to generate a position signal. The controller is arranged on the support platform, and the controller is respectively connected to the conveyor, the guide wheel assembly, the grinding wheel assembly, the driving mechanism and the proximity sensor, and the controller is used to control the conveyor, the guide wheel assembly, the grinding wheel assembly and the driving mechanism according to the position signal; The guide wheel assembly includes a first housing, a guide wheel, a first motor and a first drive assembly, wherein: The first shell is slidably disposed on the support platform; The first motor is disposed on the first housing, and an output shaft of the first motor passes through a side wall of the first housing; One end of the guide wheel is rotatably connected to the first housing, and the other end of the guide wheel is fixedly connected to the output shaft of the first motor; The first driving assembly is disposed on the supporting platform, and the first driving assembly is rotatably connected to the first shell; The grinding wheel assembly comprises a second housing, a grinding wheel and a second driving assembly, wherein: The second shell is slidably disposed on the support platform; The grinding wheel is rotatably disposed in the second housing, and two ends of the grinding wheel extend through the inner wall of the second housing respectively; The second driving assembly is disposed on the supporting platform, and the second driving assembly is rotatably connected to the second shell; The driving mechanism includes a second motor and a first sprocket, wherein: The second motor has two output ends, one output end of the second motor is fixedly connected to the extended end of the grinding wheel, and the other output end of the second motor is fixedly connected to the first sprocket; The position-limiting grinding mechanism includes a screw rod, a bearing seat, a ball sleeve, a second sprocket, a plurality of position-limiting grinding components, a cross slide block and a spring, wherein: The bearing seat is arranged on the support platform; The ball sleeve is arranged in the bearing seat, and the second sprocket is installed on the outer wall of the ball sleeve, and the second sprocket is connected to the first sprocket through a chain transmission; The screw rod is threadedly connected to the ball sleeve, and a plurality of slide grooves are provided on the outer wall of one end of the screw rod adjacent to the lifting assembly; The screw rod is provided with a cavity, and the cavity is respectively connected with the plurality of slide grooves; One end of the same side of the plurality of position-limiting grinding assemblies is respectively hinged in the corresponding slide groove, the other end of the same side of the plurality of position-limiting grinding assemblies slides in the corresponding slide groove, and the other end of the same side of the plurality of position-limiting grinding assemblies is respectively fixedly connected to the cross slide block; The cross slide slides in the cavity; One end of the spring is fixed in the cavity, and the other end of the spring is fixedly connected to the cross slide; the limit grinding assembly includes a V-shaped plate, a roller, a grinding block, a connecting plate and a slide, wherein: One end of the V-shaped plate is hinged in the slide groove, and a mounting hole is provided on the surface of the V-shaped plate; The roller is rotatably arranged in the mounting hole; The grinding block is detachably arranged on the V-shaped plate; One end of the connecting plate is hinged to the lower surface of the V-shaped plate, the other end of the connecting plate is hinged to the sliding block, and the sliding block is slidably arranged in the sliding groove.

2. The ultra-fine automatic feeding and discharging centerless grinder according to claim 1 is characterized in that: The lifting assembly includes a supporting plate and a mounting shell, wherein: The mounting shell is arranged on the supporting platform; The support plate is fixed in the mounting shell by external threaded fasteners, and an inclined knife edge is arranged on the top of the support plate.

3. The ultra-fine automatic feeding and discharging centerless grinder according to claim 1 is characterized in that: It also includes a limiting sleeve, which is arranged on the supporting platform, and one end of the screw rod slides through the limiting sleeve.

4. The ultra-fine automatic feeding and discharging centerless grinder according to claim 1 is characterized in that: It also includes a cooling mechanism, which includes a water pump, a hose, a water tank, a connecting pipe, a nozzle and a mounting plate, wherein: The water pump and the mounting plate are respectively arranged on the support platform, the water inlet end of the water pump is connected to the hose, and the water outlet end of the water pump is connected to the connecting pipe; One end of the hose away from the water pump is connected to the water tank, and the water tank is arranged below the support platform; The connecting pipe is fixed on the mounting plate, one end of the connecting pipe away from the water pump is connected to the nozzle, and the nozzle faces the grinding wheel assembly; The water pump is connected to the controller.

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