Outer diameter grinding device for PCB drill bit production

Abstract

The utility model provides an outer diameter grinding device for PCB drill bit production, belongs to the technical field of drill bit production, and is used for solving the problem that an existing grinding device easily jumps up and down when grinding bars. Comprising a liquid collecting box and a polishing assembly, the polishing assembly comprises two fixing rods and two supporting columns, the two fixing rods are both fixed in the liquid collecting box, a first mounting plate and a second mounting plate are both fixed to the two fixing rods, a polishing roller is rotatably arranged between the two first mounting plates, and a polishing motor is fixed to the first mounting plates; an output shaft of the polishing motor is fixedly connected with the polishing roller, a guide roller is rotationally arranged between the two second mounting plates, a rotating motor is fixed to the second mounting plates, an output shaft of the rotating motor is fixedly connected with the guide roller, a limiting assembly is arranged on the liquid collecting box, a spraying assembly is arranged in the liquid collecting box, and a collecting assembly is arranged at the end of the liquid collecting box. The PCB drill bit bar grinding device can prevent the PCB drill bit bar from jumping up and down in the grinding process, and improves the production efficiency of the PCB drill bit bar.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bit production, and relates to an outer diameter grinding device for PCB drill bit production. Background Art

[0002] PCB drill bits are mainly used in PCB manufacturing. PCBs are made of several layers of resin materials bonded together, with copper foil routing inside. They are divided into 4, 6, and 8 layers. Drilling accounts for 30-40% of the cost of printed circuit boards. Mass production often requires special equipment and drill bits. PCB drill bits are generally made of cemented carbide materials and have excellent characteristics such as high rigidity, high hole position accuracy, good hole wall quality, and long service life.

[0003] Existing PCB drill bits are made of carbide rods. During the production of existing drill bits, the outer diameter of the rods needs to be polished. However, during the polishing process, the existing rods will jump up and down, resulting in uneven polishing of the outer diameter of the rods, thus producing defective products and reducing the production efficiency of the drill bits. Therefore, we propose an outer diameter polishing device for PCB drill bit production. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose an outer diameter grinding device for PCB drill bit production. The technical problem to be solved by the device is: how to avoid the up and down jumping of PCB drill bit bar during grinding, so as to improve the production efficiency of PCB drill bit bar.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A device for outer diameter grinding for PCB drill bit production comprises a liquid collecting tank and a grinding assembly, wherein coolant is provided inside the liquid collecting tank, and the grinding assembly comprises two fixed rods and two support columns, the two fixed rods are fixed inside the liquid collecting tank, and mounting plate one and mounting plate two are fixed above the two fixed rods, a grinding roller is rotatably arranged between the two mounting plates one, a grinding motor is fixed on one of the mounting plates one, and the output shaft of the grinding motor is fixedly connected to the grinding roller, a guide roller is rotatably arranged between the two mounting plates two, and a plurality of diagonal lines are provided above the guide rollers, a rotating motor is fixed on one of the mounting plates two, and the output shaft of the rotating motor is fixedly connected to the guide roller, a support plate is fixed above the two fixed rods, and a chamfer is provided on the support plate, the two support columns are fixed above the liquid collecting tank, a feed trough plate is fixed above the two support columns, a limiting assembly is provided above the liquid collecting tank, a spray assembly is provided inside the liquid collecting tank, and a collecting assembly is provided at the end of the liquid collecting tank.

[0007] The limiting assembly includes a U-shaped plate, which is fixed above the liquid collecting tank. A threaded rod is rotatably provided above the U-shaped plate, a handwheel is fixed above the threaded rod, and a lifting plate is rotatably provided below the threaded rod. Two sliding sleeves are fixed above the lifting plate, and the two sliding sleeves are fixed below the U-shaped plate. Two extrusion wheels are provided below the lifting plate, and the two extrusion wheels are located directly above the support plate.

[0008] With the above structure, the handwheel is turned, the handwheel drives the threaded rod to rotate, the threaded rod drives the lifting plate to descend, the lifting plate drives the two extrusion wheels to descend, and the two extrusion wheels descend between the grinding roller and the guide roller to limit the bar material.

[0009] The spray assembly includes a submersible pump, which is fixed inside the liquid collecting tank. The water outlet of the submersible pump is connected to an infusion pipe, the end of the infusion pipe is connected to a spring hose, the end of the spring hose is connected to a spray box, and the spray box is fixed under the lifting plate.

[0010] With the above structure, the submersible pump delivers the coolant to the inside of the infusion pipe, the infusion pipe delivers the coolant to the inside of the spring hose, the spring hose delivers the coolant to the inside of the spray box, and the spray box sprays the coolant onto the rod.

[0011] The collection assembly includes two support plates, a recovery box is fixed above the two support plates, two baffles are fixed above the recovery box, a filter is provided inside the recovery box, and a connecting pipe is provided between the recovery box and the liquid collection box.

[0012] With the above structure, the filter facilitates the coolant on the bar material to fall into the inside of the recovery box, the recovery box transports the coolant to the inside of the connecting pipe, and the connecting pipe transports the coolant to the inside of the collecting tank.

[0013] The collecting assembly also includes a drop tube, which is fixed between two baffles. A rotating cylinder is fixed above the drop tube, and a feeding trough plate is fixed above the rotating cylinder. The end of the feeding trough plate is located at the end of the support plate. The rotating cylinder and the feeding trough plate are communicated with each other. A rotating shaft is provided for rotation inside the rotating cylinder, a conveying roller is fixed on the rotating shaft, and a plurality of conveying grooves are provided on the conveying roller. A conveying motor is fixed to the end of the rotating cylinder, and the output shaft of the conveying motor is connected to the rotating shaft through a coupling.

[0014] With the above structure, the conveying motor drives the rotating shaft to rotate through the output shaft, the rotating shaft drives the conveying roller to rotate, the conveying roller drives the plurality of conveying troughs to rotate, and the plurality of conveying troughs convey the rods to the filter screen in sequence.

[0015] Compared with the existing technology, this outer diameter grinding device for PCB drill bit production has the following advantages:

[0016] Through the cooperation of the grinding assembly, the limit assembly and the spray assembly, the handwheel is turned, the handwheel drives the threaded rod to rotate, the threaded rod drives the lifting plate to descend, the lifting plate drives the two extrusion wheels to descend, and the two extrusion wheels descend to a suitable height, thereby limiting the upper part of the bar material, avoiding up and down jumping of the bar material during grinding, and improving the grinding quality of the bar material. The rotating motor drives the guide roller to rotate through the output shaft, and the grinding motor drives the grinding roller to rotate through the output shaft. The grinding roller grinds the outer diameter of the bar material, avoiding uneven grinding of the bar material due to up and down jumping, reducing the number of defective products, and thus improving the production efficiency of PCB drill bar material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a side view structural diagram of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] In the figure: 1. Grinding motor; 2. Support column; 3. Feed trough plate; 4. Rotating motor; 5. Liquid collecting box; 6. Liquid infusion pipe; 7. Support plate; 8. Recovery box; 9. Filter screen; 10. Baffle; 11. Dropping pipe; 12. Rotating cylinder; 13. Conveying motor; 14. Feed trough plate; 15. Sliding sleeve rod; 16. Threaded rod; 17. Spring hose; 18. Spray box; 19. Extrusion wheel; 20. Fixed rod; 21. Mounting plate 1; 22. Grinding roller; 23. U-shaped plate; 24. Submersible pump; 25. Connecting pipe; 26. Conveying trough; 27. Rotating shaft; 28. Conveying roller; 29. ​​Lifting plate; 30. Support plate. DETAILED DESCRIPTION

[0022] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0025] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0026] See also Figure 1-4 This embodiment provides an outer diameter grinding device for PCB drill bit production, including a liquid collecting tank 5 and a grinding assembly. The liquid collecting tank 5 is provided with coolant. The grinding assembly includes two fixing rods 20 and two support columns 2. The two fixing rods 20 are fixed inside the liquid collecting tank 5. A mounting plate 1 21 and a mounting plate 2 are fixed above the two fixing rods 20. A grinding roller 22 is rotatably arranged between the two mounting plates 1 21. A grinding motor 1 is fixed to one of the mounting plates 1 21. The output shaft of the grinding motor 1 is fixedly connected to the grinding roller 22. A guide roller is rotatably arranged between the two mounting plates 2, and a plurality of diagonal lines are arranged above the guide roller. A rotating motor 4 is fixed on one of the mounting plates 2, and the output shaft of the rotating motor 4 is fixedly connected to the guide roller. A support plate 30 is fixed above the two fixed rods 20, and a chamfer is provided on the support plate 30. The two support columns 2 are fixed above the liquid collecting tank 5, and a feed trough plate 3 is fixed above the two support columns 2. A limiting component is arranged above the liquid collecting tank 5, a spray component is arranged inside the liquid collecting tank 5, and a collecting component is arranged at the end of the liquid collecting tank 5.

[0027] The limiting assembly includes a U-shaped plate 23, which is fixed above the liquid collecting tank 5. A threaded rod 16 is rotatably provided above the U-shaped plate 23, a handwheel is fixed above the threaded rod 16, and a lifting plate 29 is rotatably provided below the threaded rod 16. Two sliding sleeve rods 15 are fixed above the lifting plate 29, and the two sliding sleeve rods 15 are fixed below the U-shaped plate 23. Two extrusion wheels 19 are provided below the lifting plate 29, and the two extrusion wheels 19 are located directly above the support plate 30. When the handwheel is turned, the handwheel drives the threaded rod 16 to rotate, and the threaded rod 16 drives the lifting plate 29 to descend, and the lifting plate 29 drives the two extrusion wheels 19 to descend, and the two extrusion wheels 19 descend between the grinding roller 22 and the guide roller to limit the bar material.

[0028] The spray assembly includes a submersible pump 24, which is fixed inside the liquid collecting tank 5. The water outlet end of the submersible pump 24 is connected to the liquid infusion pipe 6, the end of the liquid infusion pipe 6 is connected to the spring hose 17, the end of the spring hose 17 is connected to the spray box 18, and the spray box 18 is fixed under the lifting plate 29; the submersible pump 24 transports the coolant to the inside of the liquid infusion pipe 6, the liquid infusion pipe 6 transports the coolant to the inside of the spring hose 17, the spring hose 17 transports the coolant to the inside of the spray box 18, and the spray box 18 sprays the coolant onto the rod material.

[0029] The collecting assembly includes two support plates 7, a recovery box 8 is fixed above the two support plates 7, two baffles 10 are fixed above the recovery box 8, a filter screen 9 is provided inside the recovery box 8, and a connecting pipe 25 is provided between the recovery box 8 and the liquid collecting box 5; the filter screen 9 facilitates the coolant on the rod material to fall into the interior of the recovery box 8, the recovery box 8 transports the coolant to the interior of the connecting pipe 25, and the connecting pipe 25 transports the coolant to the interior of the liquid collecting box 5.

[0030] The collecting assembly also includes a drop tube 11, which is fixed between the two baffles 10. A rotating cylinder 12 is fixed above the drop tube 11, and a feed trough plate 14 is fixed above the rotating cylinder 12. The end of the feed trough plate 14 is located at the end of the support plate 30. The rotating cylinder 12 and the feed trough plate 14 are communicated. A rotating shaft 27 is provided for internal rotation of the rotating cylinder 12, and a conveying roller 28 is fixed on the rotating shaft 27. A plurality of conveying troughs 26 are provided on the conveying roller 28. A conveying motor 13 is fixed to the end of the rotating cylinder 12, and the output shaft of the conveying motor 13 is connected to the rotating shaft 27 through a coupling; the conveying motor 13 drives the rotating shaft 27 to rotate through the output shaft, and the rotating shaft 27 drives the conveying roller 28 to rotate, and the conveying roller 28 drives the plurality of conveying troughs 26 to rotate, and the plurality of conveying troughs 26 convey the rods to the filter screen 9 in sequence.

[0031] The working principle of this utility model:

[0032] The bar is placed on the feed trough plate 3, and the feed trough plate 3 conveys the bar to the support plate 30, and the hand wheel is turned. The hand wheel drives the threaded rod 16 to rotate, and the threaded rod 16 drives the lifting plate 29 to descend, and the lifting plate 29 drives the two extrusion wheels 19 to descend. The two extrusion wheels 19 descend to a suitable height, thereby limiting the top of the bar to avoid up and down jumping when the bar is polished. The rotating motor 4 drives the guide roller to rotate through the output shaft, and the polishing motor 1 drives the polishing roller 22 to rotate through the output shaft. The polishing roller 22 polishes the outer diameter of the bar, and the guide roller drives the bar to perform a circular feeding motion through a number of twills. At the same time, the submersible pump 24 delivers the coolant to the inside of the infusion pipe 6, and the infusion pipe 6 delivers the coolant to the inside of the spring hose 17. The spring soft The pipe 17 transports the coolant to the inside of the spray box 18, and the spray box 18 sprays the coolant onto the rod to cool the rod. The guide roller drives the rod to move to the feeding trough plate 14, and the feeding trough plate 14 transports the polished rod to the inside of the rotating cylinder 12. Then the rod falls into the inside of the feeding trough plate 14, and the conveying motor 13 drives the rotating shaft 27 to rotate through the output shaft. The rotating shaft 27 drives the conveying roller 28 to rotate, and the conveying roller 28 drives several conveying troughs 26 to rotate. Several conveying troughs 26 convey the rods to the filter screen 9 in turn, and the filter screen 9 moves out of the equipment. At the same time, the coolant on the rod falls into the inside of the recovery box 8, and the recovery box 8 transports the coolant to the inside of the connecting pipe 25, and the connecting pipe 25 transports the coolant to the inside of the collecting tank 5.

[0033] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. An outer diameter grinding device for PCB drill bit production, comprising a liquid collecting box (5) and a grinding assembly, characterized in that: The interior of the liquid collecting box (5) is provided with cooling liquid. The grinding assembly comprises two fixing rods (20) and two supporting columns (2). The two fixing rods (20) are fixed inside the liquid collecting box (5). A mounting plate 1 (21) and a mounting plate 2 are fixed above the two fixing rods (20). A grinding roller (22) is rotatably provided between the two mounting plates 1 (21). A grinding motor (1) is fixed on one of the mounting plates 1 (21). The output shaft of the grinding motor (1) is fixedly connected to the grinding roller (22). A guide roller is rotatably provided between the two mounting plates 2. A plurality of diagonal lines are provided above the guide roller, a rotating motor (4) is fixed on one of the mounting plates, an output shaft of the rotating motor (4) is fixedly connected to the guide roller, a support plate (30) is fixed above the two fixing rods (20), a chamfer is provided on the support plate (30), two support columns (2) are fixed above the liquid collecting box (5), a feed trough plate (3) is fixed above the two support columns (2), a limiting assembly is provided above the liquid collecting box (5), a spray assembly is provided inside the liquid collecting box (5), and a collecting assembly is provided at the end of the liquid collecting box (5).

2. The outer diameter grinding device for PCB drill bit production according to claim 1, characterized in that: The limiting assembly comprises a U-shaped plate (23), the U-shaped plate (23) is fixed above the liquid collecting box (5), a threaded rod (16) is rotatably provided above the U-shaped plate (23), a hand wheel is fixed above the threaded rod (16), a lifting plate (29) is rotatably provided below the threaded rod (16), two sliding sleeve rods (15) are fixed above the lifting plate (29), the two sliding sleeve rods (15) are fixed below the U-shaped plate (23), two extrusion wheels (19) are provided below the lifting plate (29), and the two extrusion wheels (19) are located directly above the support plate (30).

3. The outer diameter grinding device for PCB drill bit production according to claim 1, characterized in that: The spray assembly comprises a submersible pump (24), the submersible pump (24) is fixed inside the liquid collecting tank (5), the water outlet end of the submersible pump (24) is connected to a liquid infusion pipe (6), the end of the liquid infusion pipe (6) is connected to a spring hose (17), the end of the spring hose (17) is connected to a spray box (18), and the spray box (18) is fixed below the lifting plate (29).

4. The outer diameter grinding device for PCB drill bit production according to claim 1, characterized in that: The collecting assembly comprises two supporting plates (7), a recovery box (8) is fixed above the two supporting plates (7), two baffles (10) are fixed above the recovery box (8), a filter screen (9) is provided inside the recovery box (8), and a connecting pipe (25) is provided between the recovery box (8) and the liquid collecting box (5).

5. The outer diameter grinding device for PCB drill bit production according to claim 4, characterized in that: The collecting assembly further comprises a drop tube (11), the drop tube (11) being fixed between the two baffles (10), a rotating cylinder (12) being fixed above the drop tube (11), a feeding trough plate (14) being fixed above the rotating cylinder (12), an end of the feeding trough plate (14) being located at an end of the support plate (30), the rotating cylinder (12) and the feeding trough plate (14) being connected, a rotating shaft (27) being provided inside the rotating cylinder (12), a conveying roller (28) being fixed on the rotating shaft (27), a plurality of conveying grooves (26) being provided on the conveying roller (28), a conveying motor (13) being fixed at the end of the rotating cylinder (12), and an output shaft of the conveying motor (13) being connected to the rotating shaft (27) via a coupling.

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