Lubricating device for flexible circuit board drill bit

Abstract

The utility model relates to a lubricating device for a flexible circuit board drill bit, and belongs to the technical field of micro drill machining. The lubricating device comprises an outer shell, an inner container used for containing lubricating oil is inserted into the outer shell, a cleaning ring is connected to an opening of the inner container, an air channel is formed in the cleaning ring and connected with an external air source, and a plurality of air outlets are evenly formed in the inner wall of the cleaning ring. One end of the air outlet connected with the air duct is higher than one end connected with the inner wall of the cleaning ring; the technical problem that residual lubricating oil in a spiral groove of a drill in the prior art pollutes a workpiece can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of micro-drilling, and particularly relates to a lubricating device for a drill bit of a flexible circuit board. Background Art

[0002] Flexible circuit board is a circuit board made of flexible substrate with the characteristics of bending and folding. Mass production often uses mold punching and laser processing, which requires a lot of equipment costs. Small and medium-scale production still cannot do without drilling processing in order to control costs. The lubrication of the drill bit during drilling directly affects the quality of flexible circuit board production.

[0003] The existing patent with publication number CN115555618A discloses a lubrication device for a drill bit, including a shield and a base assembled and connected, a lubrication sleeve assembled and connected inside the shield, the drill bit with lubricating oil on the surface is inserted into the lubrication sleeve through one side of the upper cover mechanism, the driving mechanism is started to drive the inner cylinder to rotate, during the rotation process, the air injection component is started and drives multiple groups of cleaning and brushing components to approach each other and gradually contact the drill bit surface, and during the rotation process, the drill bit surface can be evenly cleaned and coated, and excess lubricating oil will drip to the bottom of the inner cylinder.

[0004] The prior art has the following problems:

[0005] The drill bit is pre-coated with lubricating oil, and then the drill bit surface is cleaned and coated with a brush assembly. Because flexible circuit boards mostly use micron-level micro drills with a small diameter of the spiral groove, excess lubricating oil will enter the spiral groove of the drill bit and obtain a large liquid surface tension that prevents it from dripping completely, and then the excess lubricating oil contaminates the flexible circuit board during the drilling process. Utility Model Content

[0006] The utility model provides a lubricating device for a flexible circuit board drill bit, which can solve the technical problem in the prior art that the lubricating oil remaining in the spiral groove of the drill bit pollutes the workpiece.

[0007] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0008] The present application provides a lubricating device for a flexible circuit board drill bit, which comprises an outer shell, the outer shell is plugged with an inner liner for containing lubricating oil, and a cleaning ring is connected to the opening of the inner liner;

[0009] An air duct is provided inside the cleaning ring, and the air duct is connected to an external air source. A plurality of air outlets are evenly provided on the inner wall of the cleaning ring, and one end of the air outlet connected to the air duct is higher than the other end connected to the inner wall of the cleaning ring.

[0010] Through the above technical solution, by using an air duct and a ring-shaped air outlet with an opening downward, the lubricating oil absorbed in the spiral groove can be destroyed by the airflow blown out in a ring shape during the rising process after the drill bit is soaked in lubricating oil, thereby preventing excess lubricating oil from contaminating the flexible circuit board.

[0011] In the utility model, the air duct is connected to an air flow speed regulating valve, and the air flow speed regulating valve is connected to the external air source.

[0012] Through the above technical solution, an air flow speed regulating valve is used to adjust the size of the blown air flow according to different spiral groove sizes, thereby maintaining the uniformity of the lubricating oil on the surface of the drill bit.

[0013] In the utility model, an ultrasonic generator is abutted below the inner container, and the ultrasonic generator is connected to the inner bottom surface of the outer shell.

[0014] Through the above technical solution, an ultrasonic generator is used to abut the inner liner. While the drill bit is immersed in lubricating oil, ultrasonic waves can be used to remove debris in the spiral groove and destroy the bubbling of the oil film on the surface of the drill bit, further improving the bonding tightness of the oil film.

[0015] In the utility model, a heating coil is sleeved on the outer side of the inner tank, and the heating coil is connected to the side wall of the outer shell.

[0016] Through the above technical solution, the heating coil is used to heat the lubricating oil in the inner tank, thereby improving the fluidity of the lubricating oil, destroying the surface tension of the lubricating oil in the spiral groove, and reducing the difficulty of airflow cleaning.

[0017] In the utility model, a magnetic seat is connected to the lower end of the outer shell.

[0018] Through the above technical solution, the lubrication device can be more stably fixed on the workbench of the machine tool by using a magnetic seat, which reduces the modification of the machine tool and has lower use cost.

[0019] In the utility model, a T-shaped slot is provided at the lower end of the outer shell, and the magnetic seat is inserted into the T-shaped slot.

[0020] Through the above technical solution, the T-shaped groove is used to connect the magnetic base, which facilitates the adjustment of the installation position of the magnetic base to adapt to different adsorption surfaces.

[0021] In the utility model, there are three magnetic seats, and the three magnetic seats are arranged at an interval of 120° from each other.

[0022] Through the above technical solution, three magnetic seats are evenly arranged to provide a more stable support effect, avoid the lubrication device from tipping over, and place it more safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 An axonometric view of a lubricating device for a flexible circuit board drill bit provided in an embodiment of the utility model;

[0025] Figure 2 A side view of a lubricating device for a flexible circuit board drill bit provided by an embodiment of the utility model;

[0026] Figure 3 A cross-sectional view of a lubricating device for a flexible circuit board drill bit provided in an embodiment of the utility model;

[0027] Figure 4 An exploded view of a lubrication device for a flexible circuit board drill bit provided in an embodiment of the utility model.

[0028] Icon: 1-outer shell; 101-ultrasonic generator; 102-T-slot; 2-inner tank; 310-cleaning ring; 311-air duct; 312-air outlet; 320-air flow speed regulating valve; 4-magnetic seat; 501-heating coil; 502-switch. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0030] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore should not be understood as a limitation on the present application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Example

[0034] Please refer to Figure 1-Figure 4 , Figure 1-Figure 4 An embodiment of the present application is shown.

[0035] The present embodiment provides a lubricating device for a flexible circuit board drill bit, comprising: an outer shell 1, an inner shell 2 for containing lubricating oil is inserted into the outer shell 1, and a cleaning ring 310 is threadedly connected to the opening of the inner shell 2.

[0036] like Figure 3 As shown, the cleaning ring 310 is provided with an annular air duct 311 inside, the air duct 311 is connected to the air supply pipe of the external air compressor, and the inner wall of the cleaning ring 310 is evenly provided with a plurality of air outlets 312, and the end of the air outlet 312 connected to the air duct 311 is higher than the end connected to the inner wall of the cleaning ring 310 and is inclined outward.

[0037] During use, after the lubrication degree of the micro-drill is reduced, it enters through the opening in the middle of the cleaning ring 310, and under the action of compressed air blown out from the air outlet 312, the flexible circuit board processing debris in the spiral groove is separated from the micro-drill, and then the micro-drill continues to move downward and immerses in the lubricating oil contained in the stainless steel inner liner 2, and then is lifted up and pushed out of the lubrication device. When it rises to the cleaning ring 310, the compressed air is blown downward in a circular shape on the surface of the micro-drill and the spiral groove, and the excess lubricating oil is blown back into the inner liner 2.

[0038] It should be noted that the cleaning method of compressed air blowing can better clean the spiral grooves opened on the side wall of the micron-level micro-drill because it is contactless, and the drill bit of the micro-drill will not break due to contact; when necessary, the micro-drill can maintain a low-speed rotation state to soak the lubricating oil and push out the lubrication device, so that a more uniform cleaning effect can be obtained.

[0039] Through the above technical solution, by using the air duct 311 and the annular air outlet 312 with an opening downward, the lubricating oil absorbed in the spiral groove can be destroyed by the annular airflow during the rising process after the drill bit is soaked in lubricating oil, thereby preventing excess lubricating oil from contaminating the flexible circuit board.

[0040] As a preferred implementation method, Figure 1 and Figure 3 As shown, the air duct 311 is connected to an air flow speed regulating valve 320 , the air flow speed regulating valve 320 is threadedly connected to the outer wall of the cleaning ring 310 , and the air flow speed regulating valve 320 is connected to an external air source.

[0041] When in use, the size of the air path opening is controlled by rotating the adjustment knob of the air flow control valve 320, thereby controlling the air output of the air outlet 312. For a micro-drill with a small diameter, since the width of the spiral groove is small and the liquid surface tension in the spiral groove is greater, it is necessary to increase the air output and increase the wind pressure. For a micro-drill with a large diameter, the air output and wind pressure can be reduced. The specific control amount can be obtained through a limited number of tests based on the model of the air flow control valve 320 used and the specific micro-drill diameter.

[0042] Through the above technical solution, the air flow speed regulating valve 320 is adopted to adjust the size of the blown air flow according to different spiral groove sizes, thereby maintaining the uniformity of the lubricating oil on the surface of the drill bit.

[0043] As a preferred embodiment, an ultrasonic generator 101 is abutted against the bottom of the inner liner 2 , and the ultrasonic generator 101 is connected to the inner bottom surface of the outer shell 1 .

[0044] It should be noted that the ultrasonic generator 101 includes an ultrasonic generating part and a transducer part, and is a functional structure of the ultrasonic cleaning device, which will not be separately explained or specifically limited here.

[0045] Through the above technical solution, the ultrasonic generator 101 is used to abut the inner liner 2. While the drill bit is immersed in lubricating oil, ultrasonic waves can be used to remove debris in the spiral groove and destroy the bubbling of the oil film on the drill bit surface, further improving the bonding tightness of the oil film.

[0046] As a preferred implementation method, Figure 3 and Figure 4 As shown, a heating coil 501 is sleeved on the outer side of the inner tank 2. The heating coil 501 is connected to the side wall of the outer shell 1 and is connected to a switch 502. The switch 502 is connected to an external power supply and controls the on / off of the circuit board loop through a plurality of buttons, thereby adjusting the heating power of the heating coil 501.

[0047] When using, Figure 1 As shown, the switch 502 has four identical buttons, among which the bottom button controls the power on and off of the ultrasonic generator 101. Pressing it turns on the power, and pressing it again pops up to turn off the power. The three buttons above increase 100W respectively, that is, pressing one button connects a 100W path, and pressing two buttons connects a 200W path. It is used in different temperature environments and with different types of lubricants.

[0048] Through the above technical solution, the heating coil 501 is used to heat the lubricating oil in the inner tank 2, thereby improving the fluidity of the lubricating oil, destroying the surface tension of the lubricating oil in the spiral groove, and reducing the difficulty of airflow cleaning.

[0049] As a preferred embodiment, the lower end of the outer shell 1 is detachably connected with a magnetic base 4.

[0050] It should be noted that if Figure 1 and Figure 2 As shown, a knob-type magnetic base 4 is used, and the magnet is flipped by the knob to control the adsorption of the magnetic base 4, and the magnetic base 4 is further connected to the lower end of the outer shell 1 through the threaded hole on the top of the magnetic base 4.

[0051] Through the above technical solution, the magnetic base 4 can be used to more stably fix the lubrication device on the workbench of the machine tool, reduce the improvement of the machine tool, and lower the cost of use.

[0052] As a preferred implementation method, Figure 2 and Figure 4 As shown, a T-shaped slot 102 is provided at the lower end of the outer shell 1 , and a disc with a T-shaped cross-section is threadedly connected to the top of the magnetic seat 4 , and the disc is inserted into the T-shaped slot 102 .

[0053] It should be noted that the magnetic base 4 does not need to be clamped in the T-slot 102, and the lubricating device of the magnetic base 4 is limited so as to prevent the lubricating device from being displaced.

[0054] Through the above technical solution, the T-shaped groove 102 is used to connect the magnetic base 4, which facilitates the adjustment of the installation position of the magnetic base 4 to adapt to different adsorption surfaces.

[0055] As a preferred implementation, there are three magnetic seats 4, and the three magnetic seats 4 are spaced 120 degrees apart from each other.

[0056] Through the above technical solution, three magnetic seats 4 are evenly arranged to provide a more stable support effect, avoid the lubrication device from tipping over, and place it more safely.

[0057] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A lubricating device for a flexible circuit board drill bit, characterized in that: include: An outer shell (1), the outer shell (1) being plugged with an inner liner (2) for containing lubricating oil, and a cleaning ring (310) being connected to the opening of the inner liner (2); An air duct (311) is provided inside the cleaning ring (310), and the air duct (311) is connected to an external air source. A plurality of air outlets (312) are evenly provided on the inner wall of the cleaning ring (310), and one end of the air outlet (312) connected to the air duct (311) is higher than another end connected to the inner wall of the cleaning ring (310).

2. The lubricating device for a flexible circuit board drill bit according to claim 1, characterized in that: The air duct (311) is connected to an air flow speed regulating valve (320), and the air flow speed regulating valve (320) is connected to the external air source.

3. The lubricating device for a flexible circuit board drill bit according to claim 2, characterized in that: An ultrasonic generator (101) is abutted against the bottom of the inner container (2), and the ultrasonic generator (101) is connected to the inner bottom surface of the outer shell (1).

4. The lubricating device for a flexible circuit board drill bit according to claim 3, characterized in that: A heating coil (501) is sleeved on the outer side of the inner container (2), and the heating coil (501) is connected to the side wall of the outer shell (1).

5. The lubricating device for a flexible circuit board drill according to any one of claims 1 to 4, characterized in that: The lower end of the outer shell (1) is connected to a magnetic seat (4).

6. The lubricating device for a flexible circuit board drill bit according to claim 5, characterized in that: A T-shaped groove (102) is provided at the lower end of the outer shell (1), and the magnetic seat (4) is inserted into the T-shaped groove (102).

7. The lubricating device for a drill bit of a flexible circuit board according to claim 6, characterized in that: The number of the magnetic seats (4) is three, and the three magnetic seats (4) are arranged at an interval of 120° from each other.

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