Presser foot mechanism with cutter cooling function and PCB (printed circuit board) processing method

Abstract

The invention provides a presser foot mechanism with a cutter cooling function and a PCB processing method. The mechanism comprises a presser foot body; the presser foot body is of a cylinder structure, a spindle through hole is formed in the top of the presser foot body, and an air inlet channel air outlet and a detection optical fiber installation groove used for installing a detection optical fiber are formed in the bottom end face of the presser foot body. The bottom of the presser foot body is connected with a brush through a brush mounting plate; the side end face of the presser foot body is provided with an air inlet channel and a dust suction pipe installation hole communicated with the dust suction pipe. According to the structure, the PCB can be pressed through the brush in the machining process, so that the machining feeding process is more convenient; meanwhile, an integral air path is formed in the presser foot mechanism with the tool cooling function, so that the tool bit can be cooled conveniently in the using process, and dust collection is carried out at the same time; the presser foot mechanism is provided with a detection optical fiber for detecting the tool bit in real time, and tool breakage detection can be carried out.

Description

Technical Field

[0001] The invention specifically relates to a presser foot mechanism with a tool cooling function and a PCB processing method. Background Art

[0002] During the milling and forming of PCB boards, since the PCB boards are small in thickness and easy to warp, the PCB boards need to be pressed down during the milling process. This mechanism is usually called a presser foot mechanism. The presser foot mechanism has a great influence on the milling and forming quality of the PCB boards. How to use the presser foot mechanism to achieve dust collection and cooling during the milling process of the tool is an urgent problem to be solved. Therefore, a presser foot mechanism with a tool cooling function is proposed to solve this problem. Summary of the invention

[0003] The purpose of the present invention is to provide a presser foot mechanism with a tool cooling function in view of the deficiencies in the prior art, and the presser foot mechanism with a tool cooling function can well solve the above-mentioned problems.

[0004] In order to achieve the above requirements, the technical solution adopted by the present invention is: to provide a presser foot mechanism with a tool cooling function, the presser foot mechanism with a tool cooling function includes a presser foot body; the presser foot body is a cylindrical structure, and a spindle through hole is provided on the top thereof, and an air inlet channel air outlet and a detection optical fiber mounting groove for installing the detection optical fiber are provided on the bottom end face of the presser foot body; a brush is connected to the bottom of the presser foot body through a brush mounting plate; an air inlet channel and a dust suction pipe mounting hole connected with a dust suction pipe are provided on the side end face of the presser foot body; an air inlet channel of the brush mounting plate connected with the air outlet of the air inlet channel is provided on the upper end face of the brush mounting plate, and the air inlet channel of the brush mounting plate is connected with at least two brush mounting plate blowing channels that are inclined and pass through the brush mounting plate; a detection optical fiber blowing port that passes through the brush mounting plate is provided on the brush mounting plate; the dust suction pipe mounting hole, the air inlet channel air outlet, the air inlet channel, the detection optical fiber blowing port and the brush mounting plate blowing channel are all connected with the spindle through hole.

[0005] Preferably, it also includes a brush pressing plate arranged at the bottom of the presser foot body for limiting the brush mounting plate in the horizontal direction, and also includes a brush clamping plate arranged below the brush mounting plate for limiting the brush mounting plate in the vertical direction.

[0006] Preferably, the brush clamping plate is a U-shaped structure, the side end surface of the brush pressing plate is an arc-shaped structure, and the brush clamping plate and the brush pressing plate are both fixed to the presser foot body by bolts.

[0007] Preferably, the detection optical fiber air blowing port is located beside the detection optical fiber installation groove.

[0008] Preferably, eight brush mounting plate blowing channels are evenly arranged on the brush mounting plate.

[0009] Preferably, the inclination angle of the air blowing channel of the brush mounting plate is 25° to 40° with the vertical direction.

[0010] Preferably, the detection optical fiber is fixed on the detection optical fiber mounting groove and extends inwardly through the brush.

[0011] Preferably, the outside of the air inlet passage is an air inlet hole.

[0012] A PCB numerical control machine tool is provided, using any one of the above-mentioned presser foot mechanisms with tool cooling function.

[0013] The advantages of the presser foot mechanism with tool cooling function are as follows:

[0014] This structure can press the PCB board by the brush during the processing, making the processing process more convenient; at the same time, the presser foot mechanism with the tool cooling function forms an integral air path inside to facilitate cooling the tool head during use and to remove dust at the same time; the presser foot mechanism also has a detection optical fiber for real-time detection of the tool head and can detect broken tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The same reference numerals are used in these drawings to represent the same or similar parts. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 The structural diagram of a presser foot mechanism with a tool cooling function according to an embodiment of the present application is schematically shown.

[0017] Figure 2 The schematic diagram of the structure of the separated state of the presser foot mechanism with tool cooling function according to an embodiment of the present application is schematically shown.

[0018] Figure 3 A cross-sectional view of a presser foot mechanism with a tool cooling function according to an embodiment of the present application is schematically shown.

[0019] Figure 4 The figure schematically shows the installation state of a presser foot mechanism with a tool cooling function according to an embodiment of the present application when in use.

[0020] Figure 5 The structural diagram of a presser foot body of a presser foot mechanism with a tool cooling function according to an embodiment of the present application is schematically shown.

[0021] Figure 6The structural diagram of a presser foot body of a presser foot mechanism with a tool cooling function according to an embodiment of the present application is schematically shown.

[0022] Figure 7 The structural diagram of the air inlet channel of the presser foot mechanism with tool cooling function according to one embodiment of the present application is schematically shown.

[0023] Figure 8 The structural diagram of a brush mounting plate of a presser foot mechanism with a tool cooling function according to an embodiment of the present application is schematically shown.

[0024] Fig. 9 The schematic diagram of the structure of the air blowing channel of the brush mounting plate of the presser foot mechanism with tool cooling function according to one embodiment of the present application is schematically shown.

[0025] Wherein: 1. Sealing ring; 2. Presser foot body; 3. Brush pressing plate; 4. Brush mounting plate; 5. Brush clamping plate; 6. Dust suction pipe; 7. Brush; 8. Presser foot lifting cylinder; 9. Spindle; 10. Spindle mounting seat; 11 Presser foot; 12. Cutting head; 1.1. Presser foot body; 1.2. Lifting cylinder connecting hole; 1.3. Air inlet hole; 1.4. Dust suction pipe mounting hole; 1.5. Threaded structure; 1.6. Spindle through hole; 1.8. Brush clamping plate mounting hole; 1.9. Detection optical fiber mounting slot; 1.10. Air outlet of air inlet channel; 1.11. Brush pressing plate mounting hole; 1.12. Air inlet channel; 2.1. Detection optical fiber blowing port; 2.2. Air inlet channel of brush mounting plate; 2.3. Air blowing channel of brush mounting plate. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] In the following description, references to "one embodiment", "an embodiment", "an example", "an example", etc. indicate that the embodiment or example described in this way may include specific features, structures, characteristics, properties, elements or limitations, but not every embodiment or example necessarily includes the specific features, structures, characteristics, properties, elements or limitations. In addition, repeated use of the phrase "according to one embodiment of the present application" may refer to the same embodiment, but does not necessarily refer to the same embodiment.

[0028] For the sake of simplicity, certain technical features well known to those skilled in the art are omitted in the following description.

[0029] According to one embodiment of the present application, a presser foot mechanism with a tool cooling function is provided, such as Figure 1-9As shown, it includes a presser foot body 2; the presser foot body 2 is a cylindrical structure, and a main shaft through hole 1.6 is provided on the top thereof, and an air inlet channel air outlet 1.10 and a detection optical fiber installation groove 1.9 for installing the detection optical fiber are provided on the bottom end face of the presser foot body 2; a brush 7 is connected to the bottom of the presser foot body 2 through a brush installation plate 4; an air inlet channel 1.12 and a dust suction pipe installation hole 1.4 connected to the dust suction pipe 6 are provided on the side end face of the presser foot body 2; a main shaft through hole 1.6 is provided on the top end face of the main shaft through hole 1.6 connected to the main shaft through hole 1.6; a main shaft through hole 1.6 is provided on the bottom end face of the main shaft through hole 1.6 connected to ... The brush mounting plate air inlet channel 2.2 is connected with at least two brush mounting plate blowing channels 2.3 which are arranged obliquely and pass through the brush mounting plate 4; the brush mounting plate 4 is provided with a detection optical fiber blowing port 2.1 which passes through the brush mounting plate 4; the dust suction tube mounting hole 1.4, the air inlet channel air outlet 1.10, the air inlet channel 1.12, the detection optical fiber blowing port 2.1 and the brush mounting plate blowing channel 2.3 are all connected with the spindle through hole 1.6.

[0030] According to one embodiment of the present application, the presser foot mechanism with tool cooling function also includes a brush pressing plate 3 arranged at the bottom of the presser foot body 2 for limiting the brush mounting plate 4 in the horizontal direction, and also includes a brush clamping plate 5 arranged below the brush mounting plate 4 for limiting the brush mounting plate 44 in the vertical direction.

[0031] According to one embodiment of the present application, the brush clamp 5 of the presser foot mechanism with tool cooling function is a U-shaped structure, the side end surface of the brush pressing plate 3 is an arc-shaped structure, and the brush clamp 5 and the brush pressing plate 3 are both fixed to the presser foot body 2 by bolts.

[0032] According to an embodiment of the present application, the detection optical fiber air blowing port 2.1 of the presser foot mechanism with tool cooling function is located next to the detection optical fiber installation groove 1.9.

[0033] According to an embodiment of the present application, the presser foot mechanism with tool cooling function 5, the presser foot mechanism with tool cooling function according to claim 1, is characterized in that: eight brush mounting plate blowing channels 2.3 are evenly arranged on the brush mounting plate 4.

[0034] According to one embodiment of the present application, the blowing channel 2.3 of the brush mounting plate of the presser foot mechanism with tool cooling function has an inclination angle of 25° to 40° with the vertical direction.

[0035] According to one embodiment of the present application, the detection optical fiber of the presser foot mechanism with tool cooling function is fixed on the detection optical fiber installation groove 1.9 and extends inwardly through the brush 7.

[0036] According to an embodiment of the present application, the outside of the air inlet channel 1.12 of the presser foot mechanism with tool cooling function is an air inlet hole 1.3.

[0037] According to one embodiment of the present application, a PCB CNC machine tool is provided, and the PCB CNC machine tool uses any of the above-mentioned presser foot mechanisms with tool cooling function.

[0038] According to one embodiment of the present application, Figure 2 and Figure 5 As shown, the top of the inner end surface of the spindle through hole 1.6 is provided with a threaded structure 1.5 for fixing the sealing ring 1.

[0039] According to one embodiment of the present application, the presser foot mechanism with tool cooling function includes a presser foot body, a sealing ring 1, a dust suction tube, a brush mounting plate, a brush pressing plate, a brush clamping plate, and a detection optical fiber. The presser foot body is arranged above the brush mounting plate, and the presser foot body and the brush mounting plate are connected by a brush pressing plate and a brush clamping plate and fixed with screws. The presser foot body and the brush mounting plate are combined to form an air inlet channel, and two air inlet channels are opened on the side of the presser foot body. The same air inlet channel and 8 air outlet channels are opened on the corresponding surfaces of the presser foot body and the brush mounting plate. The detection optical fiber is installed at the lower end of the presser foot body and passes through the brush mounting plate to detect the tip of the tool.

[0040] According to one embodiment of the present application, the air inlet channel of the presser foot mechanism with tool cooling function is composed of a presser foot body and a brush mounting plate.

[0041] According to one embodiment of the present application, the presser foot body of the presser foot mechanism with tool cooling function is provided with an upper spindle through hole for the spindle of the PCB CNC machine tool to pass through and a detection optical fiber installation groove.

[0042] According to one embodiment of the present application, a dust suction outlet and a cold air inlet are provided on the presser foot body of the presser foot mechanism with tool cooling function.

[0043] According to an embodiment of the present application, the presser foot body and the dust suction pipe of the presser foot mechanism with tool cooling function are connected together by screws.

[0044] According to one embodiment of the present application, the brush mounting plate of the presser foot mechanism with tool cooling function is provided with a cold air inlet and outlet, a brush mounting hole, and a through hole for the spindle tool to pass through.

[0045] According to one embodiment of the present application, the detection optical fiber of the presser foot mechanism with tool cooling function is installed on the presser foot body through the installation groove and passes through the brush.

[0046] According to one embodiment of the present application, a detection optical fiber groove is opened on the brush of the presser foot mechanism with tool cooling function, and is installed on a brush mounting plate.

[0047] According to an embodiment of the present application, the presser foot mechanism with tool cooling function includes an upper sealing ring 1, a presser foot body 2, a brush pressing plate 3, a brush mounting plate 4, a brush clamping plate 5, a dust suction pipe 6 and a brush 7. The sealing ring 1 is arranged above the presser foot body 2. The presser foot body 2 and the brush mounting plate 4 are connected through the brush pressing plate 3 and the brush clamping plate 5 to form a complete air intake and air outlet circuit. There are eight air outlet channels in the brush mounting plate 4 to blow air toward the tool to cool it and blow away the waste residue generated by tool processing so that the dust suction pipe can better absorb dust.

[0048] According to one embodiment of the present application, the blowing holes of the brush mounting plate 4 of the presser foot mechanism with tool cooling function are divided into two groups of eight in total. The two groups are at angles of 25° and 40° to the center line of the spindle, corresponding to the tool tip and processing surface respectively.

[0049] According to one embodiment of the present application, the presser foot body 2 of the presser foot mechanism with tool cooling function is provided with an upper spindle through hole 1.6 for the spindle 9 of the PCB CNC machine tool to pass through and a lifting cylinder connecting hole 1.2 connected to the presser foot lifting cylinder.

[0050] According to an embodiment of the present application, the presser foot 11 of the presser foot mechanism with tool cooling function inputs external cold air through the air inlet hole 1.3 and blows it out from the air blowing channel 2.3 through the brush mounting plate 4.

[0051] According to one embodiment of the present application, the brush 7 of the presser foot mechanism with tool cooling function is fixed by a brush clamp 5 installed on the brush clamp mounting hole 1.8 and a brush pressing plate 5 installed on the brush pressing plate mounting hole 1.11.

[0052] According to one embodiment of the present application, the presser foot mechanism with tool cooling function is respectively connected to the spindle 9 of the PCB CNC machine tool and the presser foot lifting cylinder 8. The spindle 9 passes through the spindle through hole 1.6 of the presser foot body 2 and the brush 7 in sequence. The size of the spindle through hole 1.6 is controlled within the range that the spindle 9 can pass through and lock the spindle 9.

[0053] According to one embodiment of the present application, during PCB processing, the presser foot mechanism with tool cooling function presses the brush 7 onto the processing surface through the presser foot lifting cylinder 8 to form a closed space at the tool processing position of the spindle 9, and performs air blowing cooling and waste slag dispersion inside through the air holes 2.3 and 2.4.

[0054] According to one embodiment of the present application, the presser foot mechanism with tool cooling function includes a presser foot body, a sealing ring, a dust suction pipe, a brush mounting plate, a brush pressing plate, a brush clamping plate, and a detection optical fiber. The presser foot body is arranged above the brush mounting plate, and the presser foot body and the brush mounting plate are fixed by the brush pressing plate and the brush clamping plate and fixed with screws. The presser foot body is connected to the brush mounting plate to form a closed air path, and air is taken in through the air inlet of the presser foot body and blown out from the air outlet of the brush mounting plate. Several air outlet channels are opened inside the brush mounting plate, and consistent air inlet channels are opened on the surface where the presser foot body and the brush mounting plate are connected, which are respectively connected to the air inlet of the presser foot body and the air blowing port of the brush mounting plate. After the two ends are connected into a whole, a complete air path is formed. The dust suction pipe is set on the side of the presser foot body, and the dust suction pipe and the presser foot body are connected by screws.

[0055] According to an embodiment of the present application, the presser foot air intake of the presser foot mechanism with tool cooling function and the air blowing of the brush mounting plate form a closed loop, the presser foot body is provided with a cooling gas air inlet and a dust suction outlet, the lower surface of the presser foot body is provided with an air intake channel communicated with the brush mounting plate, forming a complete air intake circuit, and is provided with a brush mounting plate, a dust suction tube and positioning holes for detecting optical fiber, the brush mounting plate includes an air intake channel and a cold air outlet corresponding to the air intake channel on the presser foot body, and a detection optical fiber blowing hole, the air intake channel is composed of a combination of the presser foot body and the brush mounting plate, the air outlet channel is arranged on the brush mounting plate, the brush mounting plate is installed on the presser foot body through a brush pressing plate and a brush clamping plate and is provided with a detection groove for broken knife detection optical fiber, the cold air blowing port is arranged inside the brush mounting plate with two rows of 8 blowing ports, the gas is blown toward the tip and handle of the tool, the broken knife detection mechanism is installed on the presser foot body, and the tip position of the tool is directly detected through the detection groove on the brush.

[0056] The above-mentioned embodiments only represent several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the claims.

Claims

1. A presser foot mechanism with tool cooling function, characterized in that: Including a presser foot body; The presser foot body is a cylindrical structure, and a main shaft through hole is provided on the top thereof, and an air inlet channel air outlet and a detection optical fiber installation groove for installing the detection optical fiber are provided on the bottom end surface of the presser foot body; The bottom of the presser foot body is connected to the brush via a brush mounting plate; The side end surface of the presser foot body is provided with an air inlet channel and a dust suction pipe mounting hole connected with the dust suction pipe; The upper surface of the brush mounting plate is provided with a brush mounting plate air inlet channel connected with the air outlet of the air inlet channel, and the brush mounting plate air inlet channel is connected with at least two brush mounting plate blowing channels which are arranged obliquely and penetrate the brush mounting plate; The brush mounting plate is provided with a detection optical fiber air blowing port penetrating the brush mounting plate; The dust suction pipe mounting hole, the air outlet of the air inlet channel, the air inlet channel, the detection optical fiber air blowing port, and the air blowing channel of the brush mounting plate are all connected with the main shaft through hole.

2. The presser foot mechanism with tool cooling function according to claim 1, characterized in that: It also includes a brush pressing plate arranged at the bottom of the presser foot body for limiting the brush mounting plate in the horizontal direction, and a brush clamping plate arranged below the brush mounting plate for limiting the brush mounting plate in the vertical direction.

3. The presser foot mechanism with tool cooling function according to claim 2, characterized in that: The brush clamping plate is a U-shaped structure, the side end surface of the brush pressing plate is an arc-shaped structure, and the brush clamping plate and the brush pressing plate are both fixed to the presser foot body by bolts.

4. The presser foot mechanism with tool cooling function according to claim 1, characterized in that: The detection optical fiber air blowing port is located beside the detection optical fiber installation groove.

5. The presser foot mechanism with tool cooling function according to claim 1, characterized in that: Eight brush mounting plate blowing channels are evenly arranged on the brush mounting plate.

6. The presser foot mechanism with tool cooling function according to claim 1, characterized in that: The inclination angle of the air blowing channel of the brush mounting plate is 25° to 40° with the vertical direction.

7. The presser foot mechanism with tool cooling function according to claim 1, characterized in that: The detection optical fiber is fixed on the detection optical fiber installation groove and extends inwardly through the brush.

8. The presser foot mechanism with tool cooling function according to claim 1, characterized in that: The outside of the air intake passage is an air intake hole.

9. A PCB CNC machine tool, characterized in that: A presser foot mechanism with a tool cooling function as claimed in any one of claims 1 to 8.

10. A PCB processing method, characterized in that: Use the presser foot mechanism with tool cooling function as described in any one of claims 1 to 8.

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