A centerless grinding device with automatic detection and screening

Abstract

The present invention relates to the technical field of cylindrical grinders, and in particular to a centerless grinding device with automatic detection and screening, comprising a grinder body, a left and a right stand being provided on the top of the grinder body, a guide wheel being installed on the left stand, a grinding wheel being installed on the right stand, a first hopper being fixed between the two stands and located below the guide wheel and the grinding wheel, and a support frame being fixed on the first hopper. The prior art manually detects the outer diameter tolerance of grinding rods, which is inefficient, prone to errors, and high-precision products are highly dependent on personnel. The present invention allows the outer diameter tolerance detection of grinding rods to be continuous, with low detection errors, automatic alarm for unqualified products, and avoids the production of defective products. The present invention adopts a structure in which a laser detection device is connected to the discharge port of the grinder, so that the outer diameter tolerance detection of grinding rods can be continuous, with low detection errors, automatic alarm for unqualified products, thereby saving manpower, improving product precision, and avoiding the production of defective products.

Description

Technical Field

[0001] The invention relates to the technical field of cylindrical grinders, in particular to a centerless grinding device with automatic detection and screening. Background Art

[0002] The centerless external cylindrical grinder is used for grinding rod-type products. Its grinding structure consists of a guide wheel and a grinding wheel on the opposite side of the guide wheel. When grinding, the workpiece is placed in the guide seat, and after being fed through the guide seat, it enters between the guide wheel and the grinding wheel. After grinding with the grinding wheel, a product with qualified circumference is obtained.

[0003] However, when using the existing cylindrical grinder, it is necessary to manually detect the circumference of the outer diameter of the grinding rod in order to obtain unqualified workpieces. When unqualified workpieces are detected, it cannot automatically alarm or automatically select the unqualified workpieces, and the manual selection efficiency is low. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present invention provides the following technical solutions:

[0005] A centerless grinding device with automatic detection and screening comprises a grinding machine body, wherein left and right stands are arranged on the top of the grinding machine body, a guide wheel is installed on the stand on the left, and a grinding wheel is installed on the stand on the right, a first hopper located below the guide wheel and the grinding wheel is fixed between the two stands, a support frame is fixed on the first hopper, the support frame is vertically upward, and a material guide seat is fixed on the top of the support frame, the material guide seat transports grinding rods between the guide wheel and the feeding side of the grinding wheel, a second hopper located on the discharging side is fixed on the stand on the left, an auxiliary wheel is arranged between the guide wheel and the grinding wheel, the auxiliary wheel is located above the first hopper, a guide rail is opened on the stand on the left, a lifting seat is installed on the stand on the left through the guide rail, and the lifting seat A support plate is connected via a rotating shaft, a tension spring is provided between the support plate and the lifting seat, the outer circle of the auxiliary wheel is higher than the feeding end of the support plate, the discharging end of the support plate is tilted downward under the action of the tension spring and contacts above the second hopper, the feeding end of the support plate is close to the auxiliary wheel, a detector is fixed on the stand, the probe of the detector is vertically downward and contacts the outer circle surface of the grinding rod, a baffle is fixed on the stand on the right, the baffle blocks the discharging end of the grinding rod, the left end of the baffle extends to the top of the support plate, a first electric cylinder is fixed on the stand on the left, the action rod of the first electric cylinder is vertically upward and connected to the lifting seat, the detector can automatically alarm, and is connected to the controller, the controller is installed on the bed and controls the lifting action of the first electric cylinder when an alarm occurs.

[0006] The prior art manually detects the outer diameter tolerance of the grinding rod, which is inefficient, prone to errors, and the production of high-precision products is highly dependent on personnel. The present invention allows continuous detection of the outer diameter tolerance of the grinding rod, with low detection errors, automatic alarm for unqualified products, and avoids the production of defective products.

[0007] In one embodiment, the present invention adopts a structure in which a laser detection device is connected to the discharge port of a grinder, so that the outer diameter tolerance detection of the grinding rod can be continuous, the detection error is low, and unqualified products can be automatically alarmed, thereby saving manpower, improving product precision, and avoiding the production of defective products.

[0008] Further preferably, a connecting arm is fixed on the right side seat, the auxiliary wheel is connected to the connecting arm, and the rotation direction of the auxiliary wheel is opposite to the rotation direction of the guide wheel.

[0009] Further preferably, the auxiliary wheel is provided with a taper, and the left side of the taper is close to the right side of the support plate.

[0010] Further preferably, a positioning plate inclined upward is provided on the right side of the support plate, the positioning plate is located above the discharge side of the auxiliary wheel, and the feed side of the positioning plate is close to the baffle.

[0011] Further preferably, the discharge side of the support plate extends beyond the stand on the left side in the discharge direction and continues to extend to the top surface of the second hopper, and the second hopper is fixed to the stand on the left side by a fixing frame.

[0012] Further preferably, the second hopper is arc-shaped, with its feed end extending to contact the bottom surface of the discharge end of the support plate, and its discharge end bending downward, and the first hopper gradually tilts downward toward the feed side, and a first partition vertically upward is welded to the first hopper, and the first partition is located between the support plate and the guide wheel. The top end of the first partition is provided with an inclined plate inclined toward the guide wheel, and the inclined plate is located on the bottom side of the feed end of the support plate.

[0013] Further preferably, a second partition is welded inside the first hopper, and the first hopper is divided into a first hopper cavity and a second hopper cavity by the second partition, the first hopper cavity is located below the first partition, and the second hopper cavity is located below between the guide wheel and the grinding wheel.

[0014] Further preferably, a second electric cylinder controlled by a controller is fixed in the material guide seat, and when the actuating rod of the second electric cylinder is actuated, it can extend to between the guide wheel and the grinding wheel along the length direction of the material guide seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the grinding rod is found to be defective after being tested by the detector, the first electric cylinder is powered on, the action rod brings the lifting seat down, and the lifting seat brings the support plate down. The discharging end of the support plate is restricted by the top surface of the second hopper and rotates downward around the rotating shaft. The front end of the second hopper rotates upward and drags the tension spring to stretch and lengthen. At this time, the unqualified grinding rod is discharged after being polished by the grinding wheel. When the grinding rod is discharged, its front end is restricted by the baffle and falls on the auxiliary wheel, and then falls into the second hopper after being guided by the outer cylindrical surface of the auxiliary wheel. At this time, due to the rear end of the second hopper Deflected downward, the defective grinding rod will fall into the first hopper. After the relay delay, the action rod of the first electric cylinder rises again and pushes the lifting seat to rise. The lifting seat pushes the support plate to rise, and the rear end of the support plate rotates upward. When the detector detects that the grinding quality of the grinding rod is qualified, the controller does not receive the signal, the first electric cylinder does not work, the support plate does not fall, and will not rotate. The grinding rod is discharged, and its front end is blocked by the baffle and falls onto the auxiliary wheel. After being guided by the outer cylindrical surface of the auxiliary wheel, it falls into the second hopper and finally directly discharged from the second hopper. In summary, the application of the intelligent micrometer to the present invention can not only automatically verify and alarm the grinding quality of the grinding rod. Moreover, the defective products detected are selected separately into another hopper, which is convenient for re-grinding and saves labor. The outer diameter tolerance detection of the grinding rod can be continuous, the detection error is low, the unqualified products are automatically alarmed, and the production of defective products is avoided.

[0017] 2. The contact mode between the top of the second hopper and the bottom of the front end of the support plate not only collects the qualified grinding rods quickly after they are discharged, but also, after the defective grinding rods are discharged, the downward movement of the support plate is restricted by the top surface of the second hopper, and its rear end deflects downward, so that the defective products are quickly selected into the first hopper. Therefore, the position and contact relationship of the second hopper, the first hopper, and the second hopper and the support plate constitute a simple selection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a centerless grinding device for automatic detection and screening provided by an embodiment of the present invention from a first viewing angle;

[0019] Figure 2 A schematic diagram of a centerless grinding device for automatic detection and screening provided by an embodiment of the present invention from a second viewing angle;

[0020] Figure 3 A schematic diagram of a centerless grinding device for automatic detection and screening provided by an embodiment of the present invention from a third viewing angle;

[0021] Figure 4 A schematic diagram of a centerless grinding device for automatic detection and screening provided by an embodiment of the present invention from a fourth viewing angle;

[0022] Figure 5A schematic diagram of a centerless grinding device for automatic detection and screening provided by an embodiment of the present invention under a fifth viewing angle;

[0023] Figure 6 An automatic detection and screening centerless grinding device provided by the embodiment of the present invention comprises Figure 5 The enlarged schematic diagram of the A part is shown;

[0024] Figure 7 A schematic diagram of a centerless grinding device for automatic detection and screening provided by an embodiment of the present invention without a detector;

[0025] Figure 8 A schematic top view of a centerless grinding device for automatic detection and screening provided in an embodiment of the present invention.

[0026] In the figure: 1. grinder body; 2. stand; 3. guide wheel; 4. grinding wheel; 5. first hopper; 6. support frame; 7. guide seat; 8. grinding rod; 9. second hopper; 10. auxiliary wheel; 11. lifting seat; 12. support plate; 13. rotating shaft; 14. tension spring; 15. detector; 16. baffle; 17. connecting arm; 18. taper; 19. positioning plate; 20. first electric cylinder; 21. first partition; 22. second partition; 23. first bucket cavity; 24. second bucket cavity; 25. inclined plate; 26. fixed frame; 27. second electric cylinder. DETAILED DESCRIPTION

[0027] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0028] In one embodiment, Figure 1-Figure 8As shown: This embodiment provides an automatic detection and screening centerless grinding device, including a grinder body 1, a left and a right stand 2 are provided on the top of the grinder body 1, a guide wheel 3 is installed on the left stand 2, and a grinding wheel 4 is installed on the right stand 2, the guide wheel 3 rotates slowly, and the rotation speed of the grinding wheel 4 is higher than that of the guide wheel 3, and the rotation principle of the guide wheel 3 and the grinding wheel 4 has been disclosed in the existing centerless grinder and will not be repeated here. A first hopper 5 located below the guide wheel 3 and the grinding wheel 4 is fixed between the two stands 2, a support frame 6 is fixed on the first hopper 5, the support frame 6 is vertically upward, and a guide seat 7 is fixed on the top of the support frame 6, the guide seat 7 transports grinding rods 8 between the guide wheel 3 and the feeding side of the grinding wheel 4, a second hopper 9 located on the discharge side is fixed on the left stand 2, an auxiliary wheel 10 is provided between the guide wheel 3 and the grinding wheel 4, the auxiliary wheel 10 is located above the first hopper 5, a guide rail is provided on the left stand 2, a lifting seat 11 is installed on the left stand 2 through the guide rail, a support plate 12 is connected to the lifting seat 11 through a rotating shaft 13, a tension spring 14 is provided between the support plate 12 and the lifting seat 11, the outer circle of the auxiliary wheel 10 is higher than the feeding end of the support plate 12, and the discharge end of the support plate 12 is tilted downward under the action of the tension spring 14 and contacts the upper part of the second hopper 9 On the other hand, the feeding end of the support plate 12 is close to the auxiliary wheel 10, and a detector 15 is fixed on the stand 2 (the detector 15 adopts the existing intelligent micrometer, with a transmission data line connected to the display, and has its own alarm function. It can be directly installed and used after purchase, and the prior art will not be repeated), the probe of the detector 15 is vertically downward and contacts the outer cylindrical surface of the grinding rod 8, and a baffle 16 is fixed on the right stand 2. The baffle 16 blocks the discharge end of the grinding rod 8, and the left end of the baffle 16 extends to the top of the support plate 12. A first electric cylinder 20 is fixed on the left stand 2, and the action rod of the first electric cylinder 20 is vertically upward and connected to the lifting seat 11. The detector 15 can automatically alarm and is connected to the controller. The controller is installed on the bed or directly assembled into the display. When a defective product alarm occurs, a signal is sent to the controller, and the controller controls the first electric cylinder 20 to move.

[0029] The grinding rod 8 is placed in the guide seat 7, and is pushed by the second electric cylinder 27 in the guide seat 7 to enter between the grinding wheel 4 and the guide wheel 3. After the grinding rod 8 is ground by the grinding wheel 4 and discharged, it will pass through the probe of the detector 15. After being detected by the probe of the detector 15 (the outer cylindrical surface is detected according to the existing detection principle), the tolerance data will be displayed on the display screen. If there is an error between the tolerance range and the set tolerance range, an alarm will be displayed, and the controller will control the first electric cylinder 20 to energize and work, and the lifting seat 11 will be lowered by the action rod, and the lifting seat 11 will be lowered with the support plate 12, and the discharge end of the support plate 12 ( Figure 1The front end of the grinding rod 8 is limited by the top surface of the second hopper 9 and rotates downward around the rotating shaft 13 (the front end does not move, and the rear end deflects downward). The front end of the support plate 12 rotates upward and drags the tension spring 14 to stretch and lengthen. At this time, the unqualified grinding rod 8 is discharged after being polished by the grinding wheel 4. When the grinding rod 8 is discharged, its front end is limited by the baffle 16 and falls on the auxiliary wheel 10. After being guided by the outer cylindrical surface of the auxiliary wheel 10, it falls into the support plate 12. At this time, since the rear end of the support plate 12 deflects downward, the unqualified grinding rod 8 will fall into the first hopper 5. After a delay, the action rod of the first electric cylinder 20 It rises again and pushes the lifting seat 11 to rise. The lifting seat 11 pushes the support plate 12 to rise. The rear end of the support plate 12 rotates upward. The tension spring 14 shortens and drags the front end of the support plate 12 to rotate downward to the second hopper 9 again. When the detector 15 detects that the grinding quality of the grinding rod 8 is qualified, the controller does not receive the signal, the first electric cylinder 20 does not work, the support plate 12 does not descend, and does not rotate. The grinding rod 8 is discharged, and its front end is blocked by the baffle 16 and falls onto the auxiliary wheel 10. After being guided by the outer cylindrical surface of the auxiliary wheel 10, it falls into the second hopper 9 and finally directly discharges from the second hopper 9. In summary, the application of the intelligent micrometer to the present invention can not only automatically verify and alarm the grinding quality of the grinding rod 8. In addition, the defective products detected are selected separately into another hopper, which is convenient for re-grinding and saves labor.

[0030] The contact mode between the top of the second hopper 9 and the bottom of the front end of the support plate 12 not only allows the qualified grinding rods 8 to be quickly collected after they are discharged, but also allows the rear end of the support plate 12 to deflect downward under the restriction of the top surface of the second hopper 9 after the defective grinding rods 8 are discharged, so that the defective products are quickly selected into the first hopper 5. Therefore, the positions and contact relationship between the second hopper 9, the first hopper 5, and the second hopper 9 and the support plate 12 constitute a simple selection function.

[0031] like Figure 1 As shown, a connecting arm 17 is fixed on the right stand 2, and an auxiliary wheel 10 is connected to the connecting arm 17. The rotation direction of the auxiliary wheel 10 is opposite to that of the guide wheel 3. In actual application, the auxiliary wheel 10 is connected to the motor by belt transmission, and the auxiliary wheel 10 is driven by the motor to rotate. The rotation speed of the auxiliary wheel 10 is slow, and the grinding rod 8 falls on the auxiliary wheel 10 after being discharged, and falls on the support plate 12 after the auxiliary wheel 10 rotates and carries the material, so that the grinding rod 8 is discharged in a directional manner in the direction of the support plate 12, thereby achieving the purpose of directional discharge of the grinding rod 8.

[0032] like Figure 1 As shown, a positioning plate 19 inclined upward is provided on the right side of the support plate 12. The positioning plate 19 is located above the discharge side of the auxiliary wheel 10, and the feed side of the positioning plate 19 is close to the baffle 16. The baffle 16 and the positioning plate 19 complement each other. After the grinding rod 8 is ground and discharged, the auxiliary wheel 10 assists the grinding rod 8 to be oriented and discharged toward the direction of the support plate 12.

[0033] like Figure 3 As shown, the discharging side of the support plate 12 extends beyond the left stand 2 in the discharging direction to the top surface of the second hopper 9. The second hopper 9 is fixed to the left stand 2 through a fixing frame 26. Similarly, another positioning plate 19 is fixed to the support plate 12. This positioning plate 19 is opposite to the above-mentioned positioning plate 19 front and back. The qualified grinding rod 8 falls on the support plate 12 and can accurately fall into the second hopper 9 when the material is discharged in the inclined direction of the support plate 12.

[0034] like Figure 1 , Figure 3 As shown, the second hopper 9 is arc-shaped, and its feeding end extends to contact the bottom surface of the discharging end of the support plate 12, and its discharging end is bent downward to facilitate the final discharging of the qualified grinding rods 8. Figure 1 , Figure 5 as well as Figure 7 As shown, the first hopper 5 gradually tilts downward toward the feeding side, and a vertically upward first partition 21 is welded on the first hopper 5. The first partition 21 is located between the support plate 12 and the guide wheel 3. The top of the first partition 21 is provided with an inclined plate 25 inclined toward the guide wheel 3, and the inclined plate 25 is located at the bottom side of the feeding end of the support plate 12. When the grinding rod 8 falls on the auxiliary wheel 10 and falls on the support plate 12 after the auxiliary wheel 10 rotates, the front end of the grinding rod 8 is not only directionally restricted by the baffle 16, but also the rear end of the grinding rod 8 is directionally restricted by the first partition 21. When the grinding rod 8 rolls toward the support plate 12, the front end of the grinding rod 8 is restricted by the baffle 16 to prevent it from directly discharging forward, and the rear end of the grinding rod 8 is restricted by the first partition 21 to prevent it from directly falling into the first hopper 5, and to prevent its rear end from hitting the guide wheel 3 or the grinding wheel 4.

[0035] like Figure 2 , Figure 4 as well as Figure 7 As shown, a second partition plate 22 is welded inside the first hopper 5, and the first hopper 5 is divided into a first bucket chamber 23 and a second bucket chamber 24 by the second partition plate 22. The first bucket chamber 23 is located below the first partition plate 21, and the second bucket chamber 24 is located below between the guide wheel 3 and the grinding wheel 4. When the grinding rod 8 is ground by the grinding wheel 4 between the guide wheel 3 and the grinding wheel 4, the dust generated falls into the second bucket chamber 24 for collection, and the defective grinding rod 8 selected after detection falls into the first bucket chamber 23. The first hopper 5 not only has the function of recycling defective products, but also has the function of recycling dust. At the same time, the inclination of the first hopper 5 is utilized to collect defective products and dust toward the feeding side. When picking up defective products or cleaning dust again, the human being is in the non-grinding area, and there is no safety hazard.

[0036] like Figure 2 , Figure 8As shown, a second electric cylinder 27 controlled by a controller is fixed in the material guide seat 7. When the action rod of the second electric cylinder 27 is actuated, it can extend between the guide wheel 3 and the grinding wheel 4 along the length direction of the material guide seat 7. The second electric cylinder 27 is used to push the grinding rod 8 to feed. As the grinding rod 8 is ground, the action rod of the second electric cylinder 27 pushes the grinding rod 8 to feed. After the grinding rod 8 is ground, the action rod pushes the grinding rod 8 to completely discharge the material.

[0037] It should be further explained that the device is equipped with a time relay or a timer to control the working time of the first electric cylinder 20. For example, when the set time is 5 seconds, the action rod of the first electric cylinder 20 will automatically rise after 5 seconds after it drops (contracts), causing the rear end of the support plate 12 to deflect downward for 5 seconds and then quickly rotate upward to reset.

[0038] Other electrical components need to be matched and assembled according to the order of assembly and operation, and circuit layout needs to be performed. This is the existing common knowledge of electrical appliances and will not be described in detail in the present invention.

[0039] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centerless grinding device with automatic detection and screening, comprising a grinding machine body, wherein the top of the grinding machine body is provided with left and right stands, a guide wheel is mounted on the left stand, and a grinding wheel is mounted on the right stand, wherein: A first hopper located below the guide wheel and the grinding wheel is fixed between the two upright seats, a support frame is fixed on the first hopper, the support frame is vertically upward, and a guide seat is fixed on the top of the support frame, and the guide seat transports the grinding rod between the guide wheel and the feeding side of the grinding wheel, and a second hopper located on the discharge side is fixed on the upright seat on the left side, an auxiliary wheel is provided between the guide wheel and the grinding wheel, and the auxiliary wheel is located above the first hopper, and a guide rail is provided on the upright seat on the left side, and a lifting seat is installed on the upright seat on the left side through the guide rail, and a support plate is connected to the lifting seat through a rotating shaft, and a tension spring is provided between the support plate and the lifting seat, and the upper part of the outer circle of the auxiliary wheel is higher than the feeding end of the support plate, and the discharging end of the support plate is tilted downward under the action of the tension spring and contacts above the second hopper, and the feeding end of the support plate is close to the auxiliary wheel; A detector is fixed on the stand, and the probe of the detector is vertically downward and in contact with the outer cylindrical surface of the grinding rod. A baffle is fixed on the stand on the right side, and the baffle blocks the discharge end of the grinding rod. The left end of the baffle extends to the top of the support plate. A first electric cylinder is fixed on the stand on the left side, and the action rod of the first electric cylinder is vertically upward and connected to the lifting seat. The detector can automatically alarm and is connected to the controller. The controller is installed on the bed and controls the lifting action of the first electric cylinder when an alarm occurs.

2. The centerless grinding device for automatic detection and screening according to claim 1 is characterized in that: A connecting arm is fixed on the right side of the stand, the auxiliary wheel is connected to the connecting arm, and the rotation direction of the auxiliary wheel is opposite to that of the guide wheel.

3. The centerless grinding device for automatic detection and screening according to claim 2 is characterized in that: The auxiliary wheel is provided with a taper, and the left side of the taper is close to the right side of the supporting plate.

4. The centerless grinding device for automatic detection and screening according to claim 3 is characterized in that: A positioning plate inclined upward is provided on the right side of the supporting plate, the positioning plate is located above the discharge side of the auxiliary wheel, and the feed side of the positioning plate is close to the baffle.

5. The centerless grinding device for automatic detection and screening according to claim 4 is characterized in that: The discharging side of the support plate extends beyond the stand on the left side in the discharging direction and continues to extend to the top surface of the second hopper, and the second hopper is fixed on the stand on the left side through a fixing frame.

6. The centerless grinding device for automatic detection and screening according to claim 5 is characterized in that: The second hopper is arc-shaped, with its feed end extending to contact the bottom surface of the discharge end of the support plate, and its discharge end bending downward. The first hopper gradually tilts downward toward the feed side, and a first partition plate vertically upward is welded to the first hopper. The first partition plate is located between the support plate and the guide wheel. The top end of the first partition plate is provided with an inclined plate inclined toward the guide wheel, and the inclined plate is located on the bottom side of the feed end of the support plate.

7. The centerless grinding device for automatic detection and screening according to claim 6 is characterized in that: A second partition is welded inside the first hopper, and the first hopper is divided into a first hopper cavity and a second hopper cavity by the second partition. The first hopper cavity is located below the first partition, and the second hopper cavity is located below between the guide wheel and the grinding wheel.

8. The centerless grinding device for automatic detection and screening according to claim 7, characterized in that: A second electric cylinder controlled by a controller is fixed in the material guide seat. When the actuating rod of the second electric cylinder is actuated, it can extend to between the guide wheel and the grinding wheel along the length direction of the material guide seat.

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