Automatic feeding and positioning device for bar guiding type centerless grinding machine

Abstract

The utility model provides a kind of bar guiding formula centerless grinding machine automatic feeding positioning device, belong to grinding machine tool device field, comprising: rack and feeding rack, feeding rack is provided with the feeding assembly for automatic feeding, the top of feeding rack is hinged with the positioning assembly for assisting feeding;The utility model is automatically continuously conveyed by the feeding assembly being set, and the feeding of bar is separated and lifted, and manual operation intensity is greatly reduced, and feeding efficiency is improved, and feeding rhythm is guaranteed uniform;The card strip on the conveying belt can effectively avoid the phenomenon that bar is deviated due to sliding in the feeding process, rolling misplacement, adapt the continuous processing demand of grinding machine, improve the overall processing rhythm and production efficiency, also improve the safety of feeding operation, and through the positioning component being set, realize automatic pushing correction, ensure that the processing starting position of each bar is consistent, avoid size deviation generated by manual feeding positioning.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine tool devices, and more specifically, to an automatic feeding and positioning device for a bar stock guided centerless grinder. Background Technology

[0002] Centerless grinders are the core equipment for the precision machining of bar stock. With the advantages of not requiring workpiece center positioning, high processing efficiency, and wide adaptability, they are widely used in the grinding and polishing precision machining processes of shaft and bar hardware parts. In the bar stock grinding production process, the feeding and positioning processes are key links to ensure the workpiece machining accuracy and improve production continuity, directly determining the dimensional consistency and finished product qualification rate of bar stock grinding.

[0003] The existing technology still has the following defects: Most existing equipment uses manual assisted feeding or simple conveyor belt unidirectional feeding to complete the feeding operation. During the bar material conveying process, problems such as deviation, rolling and misalignment are prone to occur, which cannot guarantee the stability and orderliness of feeding. Material jamming and uneven feeding are very likely to occur, which seriously affects the continuity of the processing cycle.

[0004] Therefore, an automatic feeding and positioning device for a bar-guided centerless grinder is proposed. Utility Model Content

[0005] The purpose of this invention is to address the problem that most existing equipment uses manual feeding or simple conveyor belts for unidirectional feeding, which can easily lead to problems such as deviation, rolling, and misalignment during bar stock conveying. This makes it difficult to ensure the stability and orderliness of the feeding process, and can easily cause material jamming and uneven feeding, seriously affecting the continuity of the processing cycle. The invention provides an automatic feeding and positioning device for bar stock guiding centerless grinders to solve the above problems.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: The present invention is as follows: an automatic feeding and positioning device for a bar stock guide centerless grinder, comprising: a frame and a feeding rack, wherein a feeding component for automatic feeding is provided on the feeding rack, and a positioning component for auxiliary feeding is bolted to the top of the feeding rack; The feeding assembly includes a base plate bolted to one side of the feeding rack. A first motor is bolted to one side of the base plate. A first rotating rod is installed at the output end of the first motor. A second rotating rod is rotatably installed on the inner side of the base plate. A conveyor belt is tensioned between the first rotating rod and the second rotating rod, and a clamping strip is provided on the conveyor belt. A first electric push rod is bolted into the top groove of the feeding rack, and a feeding plate is bolted to the top of the first electric push rod.

[0007] As a preferred technical solution of this utility model, the positioning component includes a vertical plate bolted to the top of the feeding rack, a second electric push rod is provided through the vertical plate, and a pusher plate is bolted to the other end of the second electric push rod. A positioning seat is bolted to the top of the frame, and a U-shaped plate is bolted to the top of the positioning seat. A positioning rod is embedded in the groove of the U-shaped plate, and the positioning rod and the U-shaped plate are locked together by bolts.

[0008] As a preferred technical solution of this utility model, a guide rod is bolted to the bottom of the feeding plate, and two sets of guide rods are symmetrically arranged on both sides of the first electric push rod. The other end of the guide rod passes through the bottom of the feeding frame and extends to the outside of the feeding frame.

[0009] As a preferred technical solution of this utility model, a spring is bolted to the bottom of the feeding rack, the spring is sleeved on the outside of the guide rod, and the other end of the spring is bolted to the bottom of the feeding plate.

[0010] As a preferred technical solution of this utility model, a first protective cover and a second protective cover are bolted to the top of the frame. A second motor is bolted to one side of the first protective cover, and a rotating shaft is installed at the output end of the second motor. A grinding wheel is bolted to the outside of the rotating shaft, and the grinding wheel is located inside the first protective cover.

[0011] As a preferred technical solution of this utility model, a third motor is bolted to one side of the second protective cover, and a positioning shaft is installed at the output end of the third motor. A positioning wheel is bolted to the outside of the positioning shaft, and the positioning rod is located between the grinding wheel and the positioning wheel.

[0012] As a preferred technical solution of this utility model, a water tank is provided inside the frame, and a water pump is provided on one side of the water tank. The water inlet of the water pump is connected to the inside of the water tank through a pipe, and the water outlet of the water pump is threadedly connected to a water outlet pipe. The water outlet of the water outlet pipe is located outside the grinding wheel and is spaced a certain distance from the grinding wheel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The feeding components enable automatic and continuous conveying, sorting, and lifting of bar stock, significantly reducing manual labor intensity, improving feeding efficiency, and ensuring a consistent feeding rhythm. The guide strips on the conveyor belt effectively prevent the bar stock from shifting or rolling during the feeding process, adapting to the continuous processing requirements of the grinding machine. This not only improves the overall processing cycle and production efficiency but also enhances the safety of the feeding operation.

[0014] 2. By setting up positioning components, automatic feeding and correction are achieved, ensuring that the starting position of each bar stock is consistent, avoiding dimensional deviations caused by manual feeding and positioning. This not only improves processing accuracy but also eliminates the need for repeated manual adjustments to the positioning, further improving feeding and processing efficiency, ensuring the accuracy of subsequent grinding processing, and enhancing the continuity and smoothness of the feeding process of the feeding components. At the same time, it reduces the frequency of manual correction and adjustment, reduces unnecessary downtime, and significantly improves the product processing qualification rate. Attached Figure Description

[0015] Figure 1 One of the three-dimensional structural schematic diagrams of the automatic feeding and positioning device for a bar stock guide centerless grinder provided by this utility model; Figure 2 A second three-dimensional structural schematic diagram of the automatic feeding and positioning device for a bar stock guide centerless grinder provided by this utility model; Figure 3 A partial structural schematic diagram of the automatic feeding and positioning device for a bar stock guide centerless grinder provided by this utility model; Figure 4 A schematic diagram of the positioning component structure of the automatic feeding and positioning device for a bar stock guide centerless grinder provided by this utility model; Figure 5 A schematic diagram of the feeding component structure of the automatic feeding and positioning device for a bar stock guide centerless grinder provided by this utility model.

[0016] The diagram shows: 1. Frame; 2. Feeding rack; 3. Feeding assembly; 301. Base plate; 302. First motor; 303. First rotating rod; 304. Second rotating rod; 305. Conveyor belt; 306. Clamping bar; 307. First electric push rod; 308. Feeding plate; 4. Positioning assembly; 401. Vertical plate; 402. Second electric push rod; 403. Pushing plate; 404. Positioning seat; 405. U-shaped plate; 406. Positioning rod; 5. Guide rod; 6. Spring; 7. First protective cover; 8. Second protective cover; 9. Second motor; 10. Rotating shaft; 11. Grinding wheel; 12. Third motor; 13. Positioning shaft; 14. Positioning wheel; 15. Water tank; 16. Water pump; 17. Water outlet pipe. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0018] Example: Figures 1-5As shown, this embodiment proposes an automatic feeding and positioning device for a bar stock guided centerless grinding machine, including: a frame 1 and a feeding rack 2. The feeding rack 2 is provided with a feeding component 3 for automatic feeding, and a positioning component 4 for auxiliary feeding is bolted to the top of the feeding rack 2. The feeding assembly 3 includes a base plate 301 bolted to one side of the feeding rack 2. A first motor 302 is bolted to one side of the base plate 301. A first rotating rod 303 is installed at the output end of the first motor 302. A second rotating rod 304 is rotatably installed on the inner side of the base plate 301. A conveyor belt 305 is tensioned between the first rotating rod 303 and the second rotating rod 304. A clamping strip 306 is provided on the conveyor belt 305. A first electric push rod 307 is bolted to the top groove of the feeding rack 2. A feeding plate 308 is bolted to the top of the first electric push rod 307. When the equipment is working, the first motor 302 starts and outputs power, driving the first rotating rod 303 at the end to rotate. Through the tensioning transmission of the conveyor belt 305, the second rotating rod 304 on the inner side of the base plate 301 rotates synchronously, thereby causing the conveyor belt 305, which is tensioned between the first rotating rod 303 and the second rotating rod 304, to run continuously at a uniform speed, realizing the continuous conveying of the bar stock. Multiple sets of support rods are provided between the first rotating rod 303 and the second rotating rod 304, which can effectively support the conveyor belt 305 and the bar stock, preventing the conveyor belt 305 from collapsing. At the same time, the conveyor belt 305... The clamp 306 effectively prevents the bar stock from slipping during the feeding process. When the first electric push rod 307 in the top groove of the feeding rack 2 extends, it pushes the top-mounted feeding plate 308 upward, allowing the bar stock conveyed on the conveyor belt 305 to fall precisely into the groove of the feeding plate 308. Then, the first electric push rod 307 pushes the feeding plate 308 to the designated processing and feeding position, completing a single feeding action. This enables automatic continuous conveying and material distribution of the bar stock, eliminating the need for manual feeding, reducing the workload of operators, and improving the safety and efficiency of feeding.

[0019] like Figures 1-5As shown, the positioning component 4 includes a vertical plate 401 bolted to the top of the feeding rack 2. A second electric push rod 402 is provided through the vertical plate 401, and a pusher plate 403 is bolted to the other end of the second electric push rod 402. A positioning seat 404 is bolted to the top of the frame 1, and a U-shaped plate 405 is bolted to the top of the positioning seat 404. A positioning rod 406 is embedded in the groove on the U-shaped plate 405, and the positioning rod 406 and the U-shaped plate 405 are locked together by bolts. After the bar stock is lifted to the designated height by the feeding plate 308, the second electric push rod 402 extends and drives the pusher plate 403 to push horizontally towards the positioning seat 404, smoothly pushing the bar stock in the groove of the feeding plate 308 onto the positioning rod 406 at the top of the U-shaped plate 405. The inclined surface of the positioning rod 406 guides the bar stock to gradually fall down along the inclined surface and align with the center, realizing automatic alignment and positioning of the bar stock, avoiding the impact of bar stock position deviation on subsequent grinding accuracy. After loosening the locking bolt, the extension length of the positioning rod 406 in the groove of the U-shaped plate 405 can be adjusted to adapt to the positioning requirements of bar stock of different lengths. After adjustment, the grinding tool is started to complete the grinding operation of the bar stock. The entire feeding and positioning process does not require manual assistance, has good processing continuity, stable positioning accuracy, and ensures that the starting position of each bar stock is consistent after positioning, avoiding dimensional deviations caused by manual feeding and positioning. This not only improves processing accuracy but also eliminates the need for repeated manual adjustments to the positioning, further improving feeding and processing efficiency.

[0020] like Figure 1 , Figures 3-5 As shown, guide rods 5 are bolted to the bottom of the feeding plate 308, and two sets of guide rods 5 are symmetrically arranged on both sides of the first electric push rod 307. The other end of the guide rod 5 passes through the bottom of the feeding frame 2 and extends to the outside of the feeding frame 2. When the feeding plate 308 moves up and down under the drive of the first electric push rod 307, the two sets of symmetrically distributed guide rods 5 will slide synchronously along the through hole at the bottom of the feeding frame 2 to limit and guide the lifting trajectory of the feeding plate 308, preventing the feeding plate 308 from shifting left or right during the lifting or falling process, ensuring that the feeding plate 308 can always move stably in the vertical direction, so that the bar stock can be accurately aligned with the pushing position of the push plate 403 after being lifted. This not only improves the accuracy of feeding positioning, but also disperses the off-center load force on the first electric push rod 307 through the auxiliary support of the guide rods 5, extending the service life of the first electric push rod 307 and improving the stability of the entire feeding mechanism.

[0021] like Figure 1 , Figures 3-5As shown, a spring 6 is bolted to the bottom of the feeding rack 2. The spring 6 is sleeved on the outside of the guide rod 5, and the other end of the spring 6 is bolted to the bottom of the feeding plate 308. When the feeding plate 308 is lifted by the first electric push rod 307, the spring 6 is compressed by the feeding plate 308 and undergoes elastic deformation. When the feeding plate 308 falls back down, the elastically deformed spring 6 provides auxiliary elastic force to share the load of the first electric push rod 307, making the falling process of the feeding plate 308 more stable and smooth, avoiding collisions caused by the feeding plate 308 falling too fast due to its own weight, and further improving the stability of the feeding process.

[0022] like Figures 1-4 As shown, a first protective cover 7 and a second protective cover 8 are bolted to the top of the frame 1. A second motor 9 is bolted to one side of the first protective cover 7, and a rotating shaft 10 is installed at the output end of the second motor 9. A grinding wheel 11 is bolted to the outside of the rotating shaft 10, and the grinding wheel 11 is located inside the first protective cover 7. The first protective cover 7 forms a protective isolation for the grinding structure. When the equipment is grinding, the second motor 9 starts and drives the rotating shaft 10 to rotate at high speed. The rotating shaft 10 drives the grinding wheel 11, which is bolted to the outside, to rotate synchronously at high speed. The high-speed rotation of the grinding wheel 11 is used to grind the outer circle of the positioned bar stock, thereby realizing the polishing and fine grinding of the bar stock.

[0023] like Figures 1-4 As shown, a third motor 12 is bolted to one side of the second protective cover 8. A positioning shaft 13 is installed at the output end of the third motor 12, and a positioning wheel 14 is bolted to the outside of the positioning shaft 13. The positioning rod 406 is located between the grinding wheel 11 and the positioning wheel 14. The second protective cover 8 can protect and isolate the transmission structure of the positioning wheel 14. During the grinding and positioning operation, the third motor 12 starts and drives the positioning shaft 13 to rotate, which in turn drives the positioning wheel 14 to rotate. When the grinding wheel 11 grinds one end of the bar, the rotating positioning wheel 14 can clamp and feed the bar from the other side of the bar, working together with the grinding wheel 11 to provide a stable clamping force for the bar. At the same time, the positioning wheel 14 rotates to keep the bar fed at a uniform speed, maintaining the stability of the bar's posture during the grinding process, preventing the bar from shifting or shaking during the grinding process, and ensuring the accuracy of the grinding process.

[0024] like Figures 1-4As shown, a water tank 15 is installed inside the frame 1, and a water pump 16 is installed on one side of the water tank 15. The water inlet of the water pump 16 is connected to the inside of the water tank 15 through a pipe, and the water outlet of the water pump 16 is threadedly connected to a water outlet pipe 17. The water outlet of the water outlet pipe 17 is located outside the grinding wheel 11 and is spaced a certain distance from the grinding wheel 11. During the grinding operation, the water pump 16 can draw out the grinding coolant pre-stored in the water tank 15 and deliver the coolant to the grinding contact area between the grinding wheel 11 and the bar stock through the water outlet pipe 17. This can promptly remove the large amount of heat generated during the grinding process, reduce the temperature of the grinding area and the bar stock, and prevent the grinding wheel 11 from wearing out faster due to high temperature and the decrease in the processing accuracy of the bar stock. At the same time, it can also wash away the debris generated during grinding and flush the debris into the collection area below the device to prevent the debris from adhering to the surface of the grinding wheel 11 or the bar stock and affecting the grinding quality, improving the surface finish of the processed surface, and ensuring the stability of the grinding operation.

[0025] Working Principle: This utility model provides an automatic feeding and positioning device for a bar stock guiding centerless grinder. The specific operating steps are as follows: Step 1: The first motor 302 starts and outputs power, driving the first rotating rod 303 at its end to rotate. Through the tensioning transmission of the conveyor belt 305, the second rotating rod 304 on the inner side of the base plate 301 rotates synchronously, thereby causing the conveyor belt 305, which is tensioned between the first rotating rod 303 and the second rotating rod 304, to continuously and uniformly rotate, achieving continuous conveying of the bar stock. Multiple sets of support rods are provided between the first rotating rod 303 and the second rotating rod 304 to effectively support the conveyor belt 305 and the bar stock, preventing the conveyor belt 305 from slipping. 05 collapses, and at the same time, the clamping strip 306 on the conveyor belt 305 effectively prevents the bar stock from sliding during the feeding process. When the first electric push rod 307 in the top groove of the feeding rack 2 extends, it pushes the top-mounted feeding plate 308 upward, and the bar stock conveyed on the conveyor belt 305 can accurately fall into the groove of the feeding plate 308. Then, the first electric push rod 307 pushes the feeding plate 308 to the designated processing feeding position, completing a single feeding action; Step 2: After the bar stock is lifted to the designated height by the feeding plate 308, the second electric push rod 402 starts to extend, driving the push plate 403 to push horizontally towards the positioning seat 404, and the feeding plate 30 8. The bar stock in the groove is smoothly pushed onto the positioning rod 406 at the top of the U-shaped plate 405; the inclined surface of the positioning rod 406 guides the bar stock to gradually fall along the inclined surface and align with the center, realizing automatic alignment and positioning of the bar stock, avoiding the bar stock position deviation from affecting the subsequent grinding accuracy. After loosening the locking bolt, the extension length of the positioning rod 406 in the groove of the U-shaped plate 405 can be adjusted to adapt to the positioning requirements of bars of different lengths; Step 3: The second motor 9 starts to drive the rotating shaft 10 to rotate at high speed. The rotating shaft 10 drives the grinding wheel 11, which is bolted to the outside, to rotate synchronously at high speed. The high-speed rotation of the grinding wheel 11 is used to grind the outer circle of the positioned bar stock. The process involves polishing and grinding the bar stock. The second protective cover 8 can protect and isolate the transmission structure of the positioning wheel 14. During the grinding and positioning operation, the third motor 12 starts and drives the positioning shaft 13 to rotate, which in turn drives the positioning wheel 14 to rotate. When the grinding wheel 11 grinds one end of the bar stock, the rotating positioning wheel 14 can clamp and feed the bar stock from the other side. Together with the grinding wheel 11, it provides a stable clamping force for the bar stock. At the same time, it relies on its own rotation to drive the bar stock to maintain a uniform feed speed, maintain the stability of the bar stock's posture during the grinding process, avoid the bar stock from shifting or shaking during the grinding process, and ensure the accuracy of the grinding process.

[0026] All of the above-mentioned electrical equipment are electrically connected to the control terminal via wires, and the control terminal can be set as a PLC logic controller. This is existing technology. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be selected using conventional methods in this field. This technical solution will not be further elaborated in detail.

[0027] All technical features in this embodiment can be freely combined according to actual needs.

[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An automatic feeding and positioning device for a bar stock guiding centerless grinding machine, comprising: The frame (1) and the feeding rack (2) are characterized in that the feeding rack (2) is provided with a feeding component (3) for automatic feeding, and the top of the feeding rack (2) is bolted with a positioning component (4) for auxiliary feeding. The feeding assembly (3) includes a base plate (301) bolted to one side of the feeding rack (2). A first motor (302) is bolted to one side of the base plate (301). A first rotating rod (303) is installed at the output end of the first motor (302). A second rotating rod (304) is rotatably installed on the inner side of the base plate (301). A conveyor belt (305) is tensioned between the first rotating rod (303) and the second rotating rod (304). A clamping strip (306) is provided on the conveyor belt (305). A first electric push rod (307) is bolted to the top groove of the feeding rack (2). A feeding plate (308) is bolted to the top of the first electric push rod (307).

2. The automatic feeding and positioning device for a bar stock guided centerless grinding machine according to claim 1, characterized in that, The positioning component (4) includes a vertical plate (401) bolted to the top of the feeding rack (2). A second electric push rod (402) is provided through the vertical plate (401), and a pusher plate (403) is bolted to the other end of the second electric push rod (402). A positioning seat (404) is bolted to the top of the frame (1), and a U-shaped plate (405) is bolted to the top of the positioning seat (404). A positioning rod (406) is embedded in the groove on the U-shaped plate (405), and the positioning rod (406) and the U-shaped plate (405) are locked together by bolts.

3. The automatic feeding and positioning device for a bar stock guided centerless grinding machine according to claim 1, characterized in that, The bottom of the feeding plate (308) is bolted with a guide rod (5), and two sets of guide rods (5) are symmetrically arranged on both sides of the first electric push rod (307). The other end of the guide rod (5) passes through the bottom of the feeding rack (2) and extends to the outside of the feeding rack (2).

4. The automatic feeding and positioning device for a bar stock guiding centerless grinding machine according to claim 3, characterized in that, A spring (6) is bolted to the bottom of the feeding rack (2). The spring (6) is sleeved on the outside of the guide rod (5), and the other end of the spring (6) is bolted to the bottom of the feeding plate (308).

5. The automatic feeding and positioning device for a bar stock guided centerless grinding machine according to claim 2, characterized in that, The top of the frame (1) is bolted with a first protective cover (7) and a second protective cover (8). A second motor (9) is bolted to one side of the first protective cover (7), and a rotating shaft (10) is installed at the output end of the second motor (9). A grinding wheel (11) is bolted to the outside of the rotating shaft (10), and the grinding wheel (11) is located inside the first protective cover (7).

6. The automatic feeding and positioning device for a bar stock guided centerless grinding machine according to claim 5, characterized in that, A third motor (12) is bolted to one side of the second protective cover (8). The output end of the third motor (12) is fitted with a positioning shaft (13), and a positioning wheel (14) is bolted to the outside of the positioning shaft (13). The positioning rod (406) is located between the grinding wheel (11) and the positioning wheel (14).

7. The automatic feeding and positioning device for a bar stock guided centerless grinding machine according to claim 5, characterized in that, The frame (1) is equipped with a water tank (15) inside, and a water pump (16) is provided on one side of the water tank (15). The water inlet of the water pump (16) is connected to the inside of the water tank (15) through a pipe. The water outlet of the water pump (16) is threadedly connected to a water outlet pipe (17), and the water outlet of the water outlet pipe (17) is located outside the grinding wheel (11) and is a certain distance away from the grinding wheel (11).

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