Presser foot mechanism with cutter cooling function and PCB numerical control machine tool with presser foot mechanism

Abstract

The utility model provides a presser foot mechanism with a cutter cooling function and a PCB (Printed Circuit Board) numerical control machine tool with the same. 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] This utility model specifically relates to a presser foot mechanism with tool cooling function and a PCB CNC machine tool with the mechanism. Background Technology

[0002] During PCB milling, the PCB is relatively thin and prone to warping. Therefore, it is necessary to hold the PCB in place during the milling process. This mechanism is usually called a presser foot mechanism. The presser foot mechanism has a significant impact on the quality of PCB milling. How to use the presser foot mechanism to achieve dust extraction and cooling of the cutting tool during the milling process is an urgent problem to be solved. Therefore, a presser foot mechanism with cutting tool cooling function is proposed to solve this problem. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a presser foot mechanism with a tool cooling function, which can effectively solve the aforementioned problems.

[0004] To achieve the above requirements, the technical solution adopted by this utility model is as follows: A presser foot mechanism with tool cooling function and a PCB CNC machine tool having the mechanism are provided. The presser foot mechanism with tool cooling function includes a presser foot body; the presser foot body is a cylindrical structure, and its top is provided with a spindle through hole. The bottom end face of the presser foot body is provided with an air inlet / outlet and a detection fiber mounting groove for mounting a detection fiber; the bottom of the presser foot body is connected to a brush via 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 mounting hole connected to a dust suction pipe; the upper end face of the brush mounting plate is provided with a brush mounting plate air inlet channel connected to the air inlet channel outlet, and the brush mounting plate air inlet channel is connected to at least two inclined brush mounting plate air blowing channels that penetrate the brush mounting plate; the brush mounting plate is provided with a detection fiber air blowing port penetrating the brush mounting plate; the dust suction pipe mounting hole, the air inlet / outlet, the air inlet channel, the detection fiber air blowing port, and the brush mounting plate air blowing channel are all connected to the spindle through hole.

[0005] Preferably, it further includes a brush pressure plate disposed at the bottom of the pressure foot body for horizontally limiting the brush mounting plate, and a brush clamping plate disposed below the brush mounting plate for vertically limiting the brush mounting plate.

[0006] Preferably, the brush holder plate has a U-shaped structure, and the side end face of the brush pressure plate has an arc-shaped structure. Both the brush holder plate and the brush pressure plate are fixed to the pressure foot body by bolts.

[0007] Preferably, the air blowing port of the detection fiber is located next to the detection fiber mounting slot.

[0008] Preferably, the brush mounting plate is provided with eight air blowing channels evenly distributed on the brush mounting plate.

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

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

[0011] Preferably, the outside of the air intake channel is the air intake hole.

[0012] A PCB CNC machine tool is provided, which uses the pressure foot mechanism with tool cooling function described in any of the above claims.

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

[0014] This structure allows the PCB board to be pressed firmly by a brush during processing, making the tool path easier. At the same time, the pressure foot mechanism with tool cooling function forms an integrated air path inside to facilitate cooling of the tool head during use and to remove dust at the same time. The pressure foot mechanism also has a detection fiber optic cable for real-time detection of the tool head, which can detect tool breakage. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, use the same reference numerals to denote the same or similar parts. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A schematic diagram of a presser foot mechanism with a tool cooling function according to an embodiment of this application is shown.

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

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

[0019] Figure 4 A schematic diagram illustrating the installation state of a presser foot mechanism with a tool cooling function according to an embodiment of this application during use.

[0020] Figure 5 A schematic diagram of the presser foot body of a presser foot mechanism with tool cooling function according to an embodiment of this application is shown.

[0021] Figure 6 A schematic diagram of the presser foot body of a presser foot mechanism with tool cooling function according to an embodiment of this application is shown.

[0022] Figure 7 A schematic diagram of the air intake channel of a presser foot mechanism with a tool cooling function according to an embodiment of this application is shown.

[0023] Figure 8 A schematic diagram of the structure of a brush mounting plate of a presser foot mechanism with a tool cooling function according to an embodiment of this application is shown.

[0024] Figure 9 A schematic diagram of the air blowing channel of the brush mounting plate of a presser foot mechanism with tool cooling function according to an embodiment of this application is shown.

[0025] The components are as follows: 1. Sealing ring; 2. Presser foot body; 3. Brush pressure 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 base; 11. Presser foot; 12. Cutter head; 1.1 Presser foot body; 1.2 Lifting cylinder connection hole; 1.3 Air inlet; 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 Fiber optic mounting slot; 1.10 Air inlet / outlet of the air inlet channel; 1.11 Brush pressure plate mounting hole; 1.12 Air inlet channel; 2.1 Fiber optic air outlet; 2.2 Air inlet channel of the brush mounting plate; 2.3 Air blowing channel of the brush mounting plate. Detailed Implementation

[0026] To make the objectives, technical solutions and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0027] In the following description, references to "an embodiment," "an embodiment," "an example," "example," etc., indicate that the described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitation, but not every embodiment or example necessarily includes that particular feature, structure, characteristic, property, element, or limitation. Furthermore, the repeated use of the phrase "an embodiment according to this application," while possibly referring to the same embodiment, does not necessarily refer to the same embodiment.

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

[0029] According to one embodiment of this application, a pressure 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 has a cylindrical structure, and its top is provided with a main shaft through hole 1.6. The bottom end face of the presser foot body 2 is provided with an air inlet / outlet 1.10 and a detection fiber mounting groove 1.9 for mounting the detection fiber; the bottom of the presser foot body 2 is connected to a brush 7 via a brush mounting plate 4; the side end face of the presser foot body 2 is provided with an air inlet channel 1.12 and a suction pipe mounting hole 1.4 connected to the suction pipe 6; the upper end face of the brush mounting plate 4 is provided with a hole connected to the air inlet / outlet 1.10. The brush mounting plate has an air inlet channel 2.2, which is connected to at least two inclined air blowing channels 2.3 that penetrate the brush mounting plate 4; the brush mounting plate 4 is provided with a detection fiber optic air blowing port 2.1 that penetrates the brush mounting plate 4; the dust suction pipe mounting hole 1.4, the air outlet 1.10 of the air inlet channel, the air inlet channel 1.12, the detection fiber optic air blowing port 2.1, and the brush mounting plate air blowing channel 2.3 are all connected to the main shaft through hole 1.6.

[0030] According to one embodiment of this application, the presser foot mechanism with tool cooling function further includes a brush pressure plate 3 disposed at the bottom of the presser foot body 2 for horizontally limiting the brush mounting plate 4, and a brush clamping plate 5 disposed below the brush mounting plate 4 for vertically limiting the brush mounting plate 44.

[0031] According to one embodiment of this application, the brush holder 5 of the presser foot mechanism with tool cooling function has a U-shaped structure, and the side end face of the brush pressure plate 3 has an arc-shaped structure. Both the brush holder 5 and the brush pressure plate 3 are fixed to the presser foot body 2 by bolts.

[0032] According to one embodiment of this application, the detection fiber air outlet 2.1 of the presser foot mechanism with tool cooling function is located next to the detection fiber mounting slot 1.9.

[0033] According to one embodiment of this application, the presser foot mechanism with tool cooling function 5 and the brush mounting plate 4 are uniformly provided with eight brush mounting plate air blowing channels 2.3.

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

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

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

[0037] According to one embodiment of this application, a PCB CNC machine tool is provided, which uses the presser foot mechanism with tool cooling function described in any of the above claims.

[0038] According to one embodiment of this application, such as Figure 2 and Figure 5 As shown, the top of the inner end face 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 this application, the presser foot mechanism with tool cooling function includes a presser foot body, a sealing ring 1, a dust suction pipe, a brush mounting plate, a brush pressure plate, a brush clamping plate, and a detection optical fiber. The presser foot body is disposed above the brush mounting plate. The presser foot body and the brush mounting plate are connected by the brush pressure plate and the brush clamping plate and fixed with screws. The presser foot body and the brush mounting plate are combined to form an air intake channel. Two air intake channels are opened on the side of the presser foot body. The presser foot body and the brush mounting plate have the same air intake channel and eight air outlet channels on their corresponding surfaces. 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 tool tip.

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

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

[0042] According to one embodiment of this application, the presser foot body of the presser foot mechanism with tool cooling function has a dust extraction outlet and a cold air inlet.

[0043] According to one embodiment of this 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 this application, the pressure foot mechanism with tool cooling function has a cold air inlet, an outlet, a brush mounting hole, and a through hole for the spindle tool to pass through on its brush mounting plate.

[0045] According to one embodiment of this application, the detection optical fiber of the presser foot mechanism with tool cooling function is mounted on the presser foot body through a mounting slot and passes through a brush.

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

[0047] According to one embodiment of this application, the presser foot mechanism with tool cooling function includes an upper sealing ring 1, a presser foot body 2, a brush pressure 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 disposed above the presser foot body 2. The presser foot body 2 and the brush mounting plate 4 are connected by the brush pressure plate 3 and the brush clamping plate 5 to form a complete air intake and exhaust circuit. The brush mounting plate 4 has eight air outlet channels that blow air toward the tool to cool it and disperse the waste generated by the tool processing, so that the dust suction pipe can better collect dust.

[0048] According to one embodiment of this application, the air holes of the brush mounting plate 4 of the presser foot mechanism with tool cooling function are divided into two groups of eight. The two groups are at angles of 25° and 40° to the spindle centerline, respectively, corresponding to the tool tip and the machining surface.

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

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

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

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

[0053] According to one embodiment of this 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 blows air through the air holes 2.3 and 2.4 to cool the interior and disperse waste residue.

[0054] According to one embodiment of this 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 pressure plate, a brush clamping plate, and a detection optical fiber. The presser foot body is disposed above the brush mounting plate. The presser foot body and the brush mounting plate are fixed together by the brush pressure plate and the brush clamping plate and secured with screws. The presser foot body and the brush mounting plate are connected to form a closed air passage. Air enters through the air inlet of the presser foot body and is blown out through the air outlet of the brush mounting plate. The brush mounting plate has several air outlet channels inside. The surface where the presser foot body and the brush mounting plate are connected has a consistent air inlet channel that communicates with the air inlet of the presser foot body and the air outlet of the brush mounting plate respectively. The two ends are connected to form a complete air passage. The dust suction pipe is disposed on the side of the presser foot body and is connected to the presser foot body by screws.

[0055] According to one embodiment of this application, the presser foot mechanism with tool cooling function has a presser foot air intake and a brush mounting plate air blowing to form a closed loop. The presser foot body has a cooling gas inlet and a dust extraction outlet. The lower surface of the presser foot body has an air intake channel communicating with the brush mounting plate, forming a complete air intake loop. It is also provided with positioning holes for the brush mounting plate, the dust extraction pipe, and the detection optical fiber. The brush mounting plate includes an air intake channel corresponding to the air intake channel on the presser foot body, a cold air outlet, and a detection optical fiber blowing hole. The air intake channel is composed of the presser foot body and the brush mounting plate. The air outlet channel is set on the brush mounting plate. The brush mounting plate is mounted on the presser foot body through a brush clamping plate and a brush retaining plate and has a detection groove for the broken tool detection optical fiber. The cold air blowing port is located inside the brush mounting plate with two rows of eight blowing ports. The gas is blown towards the tool tip and the tool shank. The broken tool detection mechanism is mounted on the presser foot body and directly detects the tool tip position through the detection groove on the brush.

[0056] The embodiments described above are merely several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the claims.

Claims

1. A pressure foot mechanism with a tool cooling function, characterized in that: Including the presser foot; The presser foot body is a cylindrical structure, and its top is provided with a main shaft through hole. The bottom end face of the presser foot body is provided with an air inlet and outlet and a detection fiber mounting slot for installing detection fiber. The bottom of the presser foot is connected to a brush via a brush mounting plate. The side end face of the presser foot body is provided with an air inlet channel and a vacuum pipe mounting hole connected to the vacuum pipe; The upper surface of the brush mounting plate is provided with a brush mounting plate air inlet channel connected to the air outlet of the air inlet channel, and the brush mounting plate air inlet channel is connected to at least two inclined brush mounting plate blowing channels that penetrate the brush mounting plate. The brush mounting plate is provided with an air blowing port for the detection optical fiber that penetrates the brush mounting plate. The dust suction pipe mounting hole, air inlet and outlet, air inlet, detection fiber optic air outlet, and brush mounting plate air outlet are all connected to the spindle through hole.

2. The pressure foot mechanism with tool cooling function according to claim 1, characterized in that: It also includes a brush pressure plate disposed at the bottom of the pressure foot body for horizontally limiting the brush mounting plate, and a brush clamping plate disposed below the brush mounting plate for vertically limiting the brush mounting plate.

3. The pressure foot mechanism with tool cooling function according to claim 2, characterized in that: The brush holder plate has a U-shaped structure, and the side end face of the brush pressure plate has an arc-shaped structure. Both the brush holder plate and the brush pressure plate are fixed to the pressure foot body by bolts.

4. The pressure foot mechanism with tool cooling function according to claim 1, characterized in that: The air inlet of the detection fiber is located next to the mounting slot of the detection fiber.

5. The pressure foot mechanism with tool cooling function according to claim 1, characterized in that: The brush mounting plate is evenly provided with eight air blowing channels.

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

7. The pressure foot mechanism with tool cooling function according to claim 1, characterized in that: The detection optical fiber is fixed on the detection optical fiber mounting slot and extends inward through the brush.

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

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

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