Drilling depth control structure for CCD (Charge Coupled Device) back drilling processing

By designing a drill depth control structure including rubber padding, trigger, blower and screw motor in back drilling processing, the problems of drill depth control and influence of drilling bit surface impurities in back drilling processing are solved, and higher processing accuracy and operation convenience are achieved.

CN222944557UActive Publication Date: 2025-06-06KUNSHAN KUIYUAN ELECTRONIC TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422307719.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2025-06-06
Estimated Expiration
2034-09-23

AI Technical Summary

Technical Problem

During back drilling, too deep or too shallow drilling holes often occur, and defective products are processed, and wires are easily attached to the surface of the drill bit during long-term processing and affecting the processing accuracy.

Method used

A drilling depth control structure for CCD back drilling processing is designed to limit the drilling depth of the drill bit by the mating of rubber pads and triggers, and the metal wire attached to the drill bit surface is removed by the mating of the air blower and the air pump. At the same time, the screw motor and the adjusting screw adjust the height of the fixing ring to control the drilling depth of the drill bit.

Benefits of technology

It effectively avoids errors such as excessive or shallow drilling, improves processing accuracy, ensures the quality of back drilling processing, and monitors and adjusts the depth of the drill bit in real time through the display screen, improving operation convenience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222944557U_ABST
    Figure CN222944557U_ABST
Patent Text Reader

Abstract

The utility model discloses a drilling depth control structure for CCD (charge coupled device) back drilling processing, which comprises a base, a fixing frame is fixedly mounted at the top end of the base, a spindle casing is fixedly connected to the outer surface of the fixing frame, a processing table is fixedly mounted at the top end of the base, a fixing table is fixedly mounted on one side of the bottom end of the spindle casing, and the fixing table is fixedly mounted on the other side of the bottom end of the spindle casing. A lead screw motor is fixedly installed at the top end of the fixing table, and the output end of the lead screw motor is connected with an adjusting lead screw through a coupler. Through the cooperation of the rubber cushion and the trigger, the drilling depth of the drill bit can be limited through the fixing ring, and when the device drives the drill bit clamping table to descend through the electric telescopic cylinder, the rubber cushion can impact the surface of the trigger, so that the trigger is pressed downwards to start the circuit breaker; therefore, the circuit breaker controls the electric telescopic cylinder and the servo motor to stop emergently, back drilling machining errors caused by continuous downward drilling of the drill bit are avoided, and the drilling depth of the drill bit is controlled.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of back drilling processing, in particular to a drilling depth control structure for CCD back drilling processing. Background Art

[0002] Back drilling is a special type of controlled depth drilling. It can be used to realize buried blind holes. By controlling the hole depth, the unnecessary copper-plated holes are drilled out, leaving only the required inter-layer interconnections. For blind holes in multi-layer boards, all vias are made as through holes during board making, and then the vias that are not through holes are drilled out from the back at last to achieve the effect of blind holes, which can save the process of drilling holes separately and then crimping them.

[0003] In the existing back drilling process, the drilling depth is often too deep or too shallow, resulting in defective products. In addition, during the long processing time, metal wires are easily attached to the surface of the drill bit, affecting the processing accuracy. Therefore, it does not meet the existing needs. We propose a drilling depth control structure for CCD back drilling processing. Utility Model Content

[0004] The purpose of the utility model is to provide a drilling depth control structure for CCD back drilling processing, so as to solve the problems mentioned in the above-mentioned background technology in the back drilling process, that is, the drilling depth is often too deep or too shallow, resulting in defective products, and during the long processing process, the drill bit surface is prone to adhere to metal wires and affect the processing accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling depth control structure for CCD back drilling processing, comprising a base, a fixing frame is fixedly installed on the top of the base, a spindle housing is fixedly connected to the outer surface of the fixing frame, a processing table is fixedly installed on the top of the base, a fixing table is fixedly installed on one side of the bottom end of the spindle housing, a screw motor is fixedly installed on the top of the fixing table, an adjusting screw is connected to the output end of the screw motor through a coupling, a screw sleeve is movably installed on the outer surface of the adjusting screw, the screw sleeve passes through the bottom of the fixed table and extends to the outside of the spindle housing, an L-shaped connecting rod is movably installed on the bottom end of the screw sleeve, a fixing ring is fixedly installed on the outer end of the L-shaped connecting rod, a drill bit clamping table is movably installed at the center of the bottom end of the spindle housing, and the fixing ring is located directly below the drill bit clamping table.

[0006] Preferably, an electric telescopic cylinder is fixedly installed on the top of the spindle housing, the output end of the electric telescopic cylinder is fixedly connected to the top of the drill clamping platform, a servo motor is provided inside the drill clamping platform, a drill bit is provided inside the bottom end of the drill clamping platform, the output end of the servo motor is connected to the top of the drill bit through a coupling, a rubber pad is fixedly installed on the bottom end of the drill clamping platform near the outside, a trigger is fixedly installed on the surface of the top of the fixing ring, a circuit breaker is provided inside the fixing ring, the trigger is electrically connected to the circuit breaker, and the circuit breaker is electrically connected to the power supply of the electric telescopic cylinder and the servo motor.

[0007] Preferably, a plurality of air blowing heads are fixedly installed inside the fixing ring, the air outlets of each of the air blowing heads are through-connected, an air pump is fixedly installed on the outer surface of the L-shaped connecting rod, and the air outlet end of the air pump is connected to the air blowing head close to the L-shaped connecting rod.

[0008] Preferably, a plug-in rod is fixedly installed on the top of the L-shaped connecting rod, and the plug-in rod is movably inserted into the bottom end of the screw rod sleeve. Two limit grooves are provided inside the bottom end of the screw rod sleeve, and two limit blocks are movably installed on the outer surface of the plug-in rod, and the limit blocks are movably inserted into the inside of the limit grooves.

[0009] Preferably, a telescopic groove is provided inside the plug-in rod, and the limit blocks are slidably inserted into the inside of the telescopic groove, and a compression spring is movably installed between the two limit blocks.

[0010] Preferably, two movable protrusions are movably installed on the outer surface of the screw sleeve, and the movable protrusions are movably inserted into the inside of the limiting groove. Spring grooves are provided at positions inside the screw sleeve near the movable protrusions, and extrusion springs are movably installed inside the spring grooves. The surfaces of the movable protrusions are in contact with the surface of the limiting block.

[0011] Preferably, a display screen is fixedly mounted on one side of the outer surface of the spindle housing close to the fixed platform, and the drill bit passes through the center of the fixed ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can limit the drilling depth of the drill bit through the fixing ring by the cooperation of the rubber cushion and the trigger. When the device drives the drill bit clamping platform to descend through the electric telescopic cylinder, the drill bit clamping platform will drive the rotating drill bit to descend. When the rubber cushion hits the surface of the trigger, the trigger will be pressed down to start the breaker, so that the breaker will make the electric telescopic cylinder and the servo motor stop urgently, so as to prevent the drill bit from continuing to drill downward and causing back drilling processing errors, thereby controlling the drilling depth of the drill bit;

[0014] 2. The utility model cooperates with the air blowing head and the air pump, so that when the drill bit descends, the air blowing head will first blow air to the surface of the drill bit, so that when the drill bit performs continuous processing, the impurities such as metal wire attached to the surface of the drill bit can be removed by the air blowing head to avoid affecting the back drilling process;

[0015] 3. The utility model cooperates with the screw motor and the adjusting screw so that when the device is in use, the screw motor can drive the adjusting screw to rotate, thereby adjusting the screw sleeve and the L-shaped connecting rod to rise and fall, and then adjusting the height position of the fixing ring, thereby adjusting the drilling depth of the drill bit, and the distance between the rubber pad and the trigger is displayed on the surface of the display screen through the display screen, which is convenient for the staff to check the drilling depth of the drill bit and adjust it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side view of the utility model as a whole;

[0018] Figure 3 It is a cross-sectional front view of the utility model as a whole;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the local structure of part A;

[0020] Figure 5 For this utility model Figure 3 Schematic diagram of the local structure of part B.

[0021] In the figure: 1. spindle housing; 2. electric telescopic cylinder; 3. fixed frame; 4. base; 5. processing table; 6. display screen; 7. drill clamping table; 8. drill bit; 9. fixing ring; 10. L-shaped connecting rod; 11. fixing table; 12. screw motor; 13. adjusting screw; 14. screw sleeve; 15. rubber cushion; 16. trigger; 17. circuit breaker; 18. blowing head; 19. air pump; 20. limit groove; 21. plug-in stem; 22. telescopic groove; 23. limit block; 24. compression spring; 25. movable protrusion; 26. spring groove; 27. extrusion spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figures 1 to 5The utility model provides an embodiment: a drilling depth control structure for CCD back drilling processing, including a base 4, a fixing frame 3 is fixedly installed on the top of the base 4, a spindle housing 1 is fixedly connected to the outer surface of the fixing frame 3, a processing table 5 is fixedly installed on the top of the base 4, a fixing table 11 is fixedly installed on one side of the bottom end of the spindle housing 1, a screw motor 12 is fixedly installed on the top of the fixing table 11, an adjusting screw 13 is connected to the output end of the screw motor 12 through a coupling, a screw sleeve 14 is movably installed on the outer surface of the adjusting screw 13, the screw sleeve 14 passes through the bottom of the fixing table 11 and extends to the outside of the spindle housing 1, an L-shaped connecting rod 10 is movably installed on the bottom of the screw sleeve 14, a fixing ring 9 is fixedly installed on the outer end of the L-shaped connecting rod 10, a drill clamping table 7 is movably installed in the center of the bottom end of the spindle housing 1, and the fixing ring 9 is located directly below the drill clamping table 7.

[0024] An electric telescopic cylinder 2 is fixedly installed on the top of the spindle housing 1, and the output end of the electric telescopic cylinder 2 is fixedly connected to the top of the drill clamping platform 7. A servo motor is provided inside the drill clamping platform 7, and a drill bit 8 is provided inside the bottom end of the drill clamping platform 7. The output end of the servo motor is connected to the top of the drill bit 8 through a coupling, and a rubber pad 15 is fixedly installed at a position near the outer side of the bottom end of the drill clamping platform 7. A trigger 16 is fixedly installed on the surface of the top of the fixing ring 9, and a circuit breaker 17 is provided inside the fixing ring 9. The trigger 16 is electrically connected to the circuit breaker 17, and the circuit breaker 17 is electrically connected to the power supply of the electric telescopic cylinder 2 and the servo motor.

[0025] Through the cooperation of the rubber pad 15 and the trigger 16, the drilling depth of the drill bit 8 can be limited by the fixing ring 9. When the device drives the drill clamping platform 7 to descend through the electric telescopic cylinder 2, the drill clamping platform 7 will drive the rotating drill bit 8 to descend. When the rubber pad 15 hits the surface of the trigger 16, the trigger 16 will be pressed down to activate the circuit breaker 17, so that the circuit breaker 17 causes the electric telescopic cylinder 2 and the servo motor to stop urgently, preventing the drill bit 8 from continuing to drill downward and causing back drilling processing errors, thereby controlling the drilling depth of the drill bit 8.

[0026] A plurality of air blowing heads 18 are fixedly installed inside the fixing ring 9 , and the air outlets of each air blowing head 18 are connected to each other. An air pump 19 is fixedly installed on the outer surface of the L-shaped connecting rod 10 , and the air outlet end of the air pump 19 is connected to the air blowing head 18 close to the L-shaped connecting rod 10 .

[0027] Through the cooperation of the air blowing head 18 and the air pump 19, when the drill bit 8 descends, the air blowing head 18 will first blow air on the surface of the drill bit 8, so that when the drill bit 8 performs continuous processing, the impurities such as metal wires attached to the surface of the drill bit 8 can be removed by the air blowing head 18 to avoid affecting the back drilling process.

[0028] A plug-in rod 21 is fixedly installed on the top of the L-shaped connecting rod 10, and the plug-in rod 21 is movably inserted into the bottom end of the screw sleeve 14. Two limit grooves 20 are provided inside the bottom end of the screw sleeve 14. Two limit blocks 23 are movably installed on the outer surface of the plug-in rod 21, and the limit blocks 23 are movably inserted into the inside of the limit grooves 20.

[0029] Through the cooperation of the screw motor 12 and the adjusting screw 13, when the device is in use, the screw motor 12 can drive the adjusting screw 13 to rotate, thereby adjusting the screw sleeve 14 and the L-shaped connecting rod 10 to rise and fall, and then adjusting the height position of the fixing ring 9, thereby adjusting the drilling depth of the drill bit 8, and the distance between the rubber pad 15 and the trigger 16 is displayed on the surface of the display screen 6 through the display screen 6, so that the staff can check the drilling depth of the drill bit 8 and adjust it.

[0030] A telescopic slot 22 is provided inside the plug-in rod 21 , and the limit blocks 23 are all slidably inserted into the telescopic slot 22 . A compression spring 24 is movably installed between the two limit blocks 23 .

[0031] Two movable protrusions 25 are movably installed on the outer surface of the screw sleeve 14, and the movable protrusions 25 are movably inserted into the inside of the limit groove 20. Spring grooves 26 are provided near the movable protrusions 25 inside the screw sleeve 14, and extrusion springs 27 are movably installed inside the spring grooves 26. The surfaces of the movable protrusions 25 are in contact with the surface of the limit block 23.

[0032] Through the cooperation of the limit block 23 and the movable protrusion 25, when it is necessary to maintain the circuit breaker 17 or the blowing head 18, the two movable protrusions 25 can be pressed inwardly so that the movable protrusion 25 pushes the limit block 23 to move inside the telescopic groove 22, thereby releasing the limit between the limit block 23 and the limit groove 20. At this time, the L-shaped connecting rod 10 can be directly pulled downward, so that the fixing ring 9 and the L-shaped connecting rod 10 can be removed, which is convenient for maintenance and repair of internal parts.

[0033] A display screen 6 is fixedly mounted on one side of the outer surface of the spindle housing 1 close to the fixed platform 11 , and a drill bit 8 passes through the center of the fixed ring 9 .

[0034] When the CCD back-drilling processing drilling depth control structure is in use, the drilling depth of the drill bit 8 can be limited by the fixing ring 9. When the device drives the drill bit clamping platform 7 to descend through the electric telescopic cylinder 2, the drill bit clamping platform 7 will drive the rotating drill bit 8 to descend. When the rubber cushion 15 hits the surface of the trigger 16, the trigger 16 will be pressed down to start the circuit breaker 17, so that the circuit breaker 17 causes the electric telescopic cylinder 2 and the servo motor to stop urgently, so as to prevent the drill bit 8 from continuing to drill downwards and causing the back-drilling processing error, thereby controlling the drilling depth of the drill bit 8

[0035] When the drill bit 8 is lowered, the blow head 18 will first blow air to the surface of the drill bit 8, so that when the drill bit 8 is continuously processed, the blow head 18 can remove impurities such as metal wire attached to the surface of the drill bit 8 to avoid affecting the back drilling process.

[0036] When the drilling depth of the drill bit 8 needs to be adjusted, the screw motor 12 is used to drive the screw 13 to rotate, thereby adjusting the screw sleeve 14 and the L-shaped connecting rod 10 to rise and fall, and then adjusting the height position of the fixing ring 9, thereby adjusting the drilling depth of the drill bit 8, and the distance between the rubber cushion 15 and the trigger 16 is displayed on the surface of the display screen 6 through the display screen 6, so that the staff can check the drilling depth of the drill bit 8 and adjust it.

[0037] When it is necessary to maintain the circuit breaker 17 or the air blowing head 18, the two movable protrusions 25 can be pressed inwardly so that the movable protrusions 25 push the limit block 23 to move inside the telescopic groove 22, thereby releasing the limit between the limit block 23 and the limit groove 20. At this time, the L-shaped connecting rod 10 can be directly pulled downward, so that the fixing ring 9 and the L-shaped connecting rod 10 can be removed, which is convenient for maintenance and repair of internal parts.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A drilling depth control structure for CCD back drilling processing, comprising a base (4), a fixing frame (3) fixedly mounted on the top of the base (4), a spindle housing (1) fixedly connected to the outer surface of the fixing frame (3), and a processing table (5) fixedly mounted on the top of the base (4), characterized in that: A fixing platform (11) is fixedly mounted on one side of the bottom end of the spindle housing (1), a screw motor (12) is fixedly mounted on the top end of the fixing platform (11), an output end of the screw motor (12) is connected to an adjusting screw (13) via a coupling, a screw sleeve (14) is movably mounted on the outer surface of the adjusting screw (13), the screw sleeve (14) passes through the bottom of the fixing platform (11) and extends to the outside of the spindle housing (1), an L-shaped connecting rod (10) is movably mounted on the bottom end of the screw sleeve (14), a fixing ring (9) is fixedly mounted on the outer end of the L-shaped connecting rod (10), a drill bit clamping platform (7) is movably mounted at the center of the bottom end of the spindle housing (1), and the fixing ring (9) is located directly below the drill bit clamping platform (7).

2. The drilling depth control structure for CCD back drilling according to claim 1, characterized in that: An electric telescopic cylinder (2) is fixedly mounted on the top of the spindle housing (1); an output end of the electric telescopic cylinder (2) is fixedly connected to the top of a drill bit clamping platform (7); a servo motor is arranged inside the drill bit clamping platform (7); a drill bit (8) is arranged inside the bottom of the drill bit clamping platform (7); the output end of the servo motor is connected to the top of the drill bit (8) via a coupling; a rubber cushion (15) is fixedly mounted at a position close to the outside of the bottom of the drill bit clamping platform (7); a trigger (16) is fixedly mounted on the surface of the top of the fixing ring (9); a circuit breaker (17) is arranged inside the fixing ring (9); the trigger (16) is electrically connected to the circuit breaker (17); and the circuit breaker (17) is electrically connected to the power supply of the electric telescopic cylinder (2) and the servo motor.

3. The drilling depth control structure for CCD back drilling according to claim 1, characterized in that: A plurality of air blowing heads (18) are fixedly mounted inside the fixing ring (9), and the air outlets of each of the air blowing heads (18) are connected to each other. An air pump (19) is fixedly mounted on the outer surface of the L-shaped connecting rod (10), and the air outlet end of the air pump (19) is connected to the air blowing head (18) close to the L-shaped connecting rod (10).

4. The drilling depth control structure for CCD back drilling according to claim 1, characterized in that: A plug-in rod (21) is fixedly mounted on the top end of the L-shaped connecting rod (10), and the plug-in rod (21) is movably inserted into the bottom end of the screw sleeve (14). Two limit grooves (20) are arranged inside the bottom end of the screw sleeve (14), and two limit blocks (23) are movably mounted on the outer surface of the plug-in rod (21), and the limit blocks (23) are movably inserted into the inside of the limit grooves (20).

5. The drilling depth control structure for CCD back drilling according to claim 4, characterized in that: A telescopic groove (22) is provided inside the plug-in rod (21), and the limit blocks (23) are slidably inserted into the inside of the telescopic groove (22). A compression spring (24) is movably installed between the two limit blocks (23).

6. The drilling depth control structure for CCD back drilling according to claim 1, characterized in that: Two movable protrusions (25) are movably mounted on the outer surface of the screw rod sleeve (14), and the movable protrusions (25) are movably inserted into the interior of the limiting groove (20). A spring groove (26) is provided at a position close to the movable protrusion (25) inside the screw rod sleeve (14), and a compression spring (27) is movably mounted inside the spring groove (26). The surface of the movable protrusion (25) is in contact with the surface of the limiting block (23).

7. The drilling depth control structure for CCD back drilling according to claim 1, characterized in that: A display screen (6) is fixedly mounted on one side of the outer surface of the spindle housing (1) close to the fixed platform (11), and the drill bit (8) passes through the center of the fixed ring (9).