A dust suction structure for CNC machine tools

Abstract

The utility model provides a dust suction structure for a numerically controlled machine tool, which includes a presser foot cup, a brush and a dust suction pipe. The dust suction structure for a numerically controlled machine tool of the utility model can ensure that the brush can gently contact the surface of the workpiece during dust suction to avoid waste splashing through the connection design between the brush and the bottom end of the presser foot cup; the connection between the dust suction pipe and the suction device can timely remove cutting chips and dust, and can avoid the accumulation of these impurities on the workpiece. The cross-section of the dust suction port is designed to be elliptical, and the major axis is distributed along the circumference of the presser foot cup. Since the dust suction port is lengthened along the circumferential direction, it is easy to form a circular dust suction airflow, so that the waste filled in the presser foot cup can be quickly sucked away, reducing the possibility of waste clogging in the presser foot cup. In addition, since the dust suction port is longer than the original circular dust suction port, the long circuit board can also be sucked away, so that the circuit board waste on the workbench will not accumulate, affecting the processing quality and processing efficiency.

Description

Technical Field

[0001] The utility model relates to the field of numerical control machine tools, in particular to a dust suction structure for numerical control machine tools. Background Art

[0002] During the processing of circuit boards, scraps and strips of waste are constantly generated. The waste must be sucked away immediately, otherwise the spindle will be stuck, causing the tool to break or the circuit board to be processed into defective products.

[0003] The dust collection on existing CNC machine tools is mostly done by setting a dust collection pipe connected to the dust collection equipment on the side of the spindle, so as to suck in the waste generated by the spindle processing. The dust collection structure is mostly a positive three-way structure. The dust collection ports between the dust collection pipe and other connecting parts are all circular holes, which cannot form an annular airflow, and the dust collection efficiency is low. The three-way pipe is prone to waste residue and blockage.

[0004] Therefore, it is necessary to provide a dust suction structure for a CNC machine tool to solve the above technical problems. Utility Model Content

[0005] The utility model provides a dust suction structure for a CNC machine tool, so as to solve the problem that the interface of the dust suction structure on the CNC machine tool in the prior art is a positive three-way structure, the dust suction openings between the dust suction pipe and other connecting parts are all circular holes, an annular airflow cannot be formed, the dust suction efficiency is low, and the three-way pipe is prone to waste residue and blockage.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a dust collection structure for a CNC machine tool, which comprises:

[0007] A presser foot cup, wherein a first inner hole is arranged at the bottom end of the presser foot cup, and a dust suction port is arranged at the side of the presser foot cup, and the dust suction port is communicated with the first inner hole;

[0008] A brush connected to the bottom end of the presser cup, the brush is provided with a second inner hole, the second inner hole corresponds to the first inner hole, and the cutter passes through the second inner hole; and

[0009] A dust suction pipe, one end of which is connected to the dust suction port, and the other end of which is connected to the suction device;

[0010] The top of the presser cup is connected to the main shaft, and the bottom of the main shaft is provided with a cutter, which sequentially penetrates the first inner hole and the second inner hole and extends;

[0011] The cross section of the dust suction port is elliptical, and the major axis of the dust suction port is distributed along the circumference of the presser foot cup.

[0012] In the utility model, along the plane where the bottom surface of the presser foot cup is located, the angle between the central axis of the dust suction port and the plane where the bottom surface of the presser foot cup is located is an acute angle.

[0013] In the utility model, the major axis of the dust suction port close to one end of the connecting head gradually decreases.

[0014] In the utility model, a flaring groove is arranged at the bottom end of the presser foot cup, the flaring groove is communicated with the first inner hole, and the diameter of the cross section of the flaring groove gradually increases away from the first inner hole.

[0015] In the utility model, an arcuate groove is arranged on the inner side of the presser foot cup, and the arcuate groove is located at one end of the suction port away from the suction pipe, and the cross-sectional width of the arcuate groove gradually increases away from the end of the suction pipe.

[0016] In the utility model, the presser foot cup comprises:

[0017] A cup body, the top of which is connected to the main shaft, the suction port is located on one side of the cup body, and a first screw hole is provided at the bottom of the cup body;

[0018] The base is connected to the brush, the first inner hole is located on the base, and the base is provided with a first connecting hole, the first connecting hole corresponds to the first screw hole, and the base is detachably connected to the bottom end of the cup body through screws.

[0019] In the utility model, the brush comprises a fixing plate and bristles arranged at the bottom end of the fixing plate, and the fixing plate is detachably connected to the base.

[0020] In the utility model, the fixing plate is provided with a first connection groove on its circumference; the base is provided with a mounting groove, and the top end of the fixing plate is embedded in the mounting groove;

[0021] The dust collection structure for CNC machine tools also includes:

[0022] A support plate connected to the bottom end of the base, the support plate is located on one side of the brush, and the support plate is engaged with one side of the first connecting groove; and

[0023] A pressing plate is connected to the base, the pressing plate is located on the other side of the brush, and the pressing plate is engaged with the other side of the first connecting groove.

[0024] In the utility model, a positioning groove is provided at the bottom end of the base, the positioning groove is communicated with the mounting groove, and a second screw hole is provided at the side of the base;

[0025] The pressing plate is embedded in the positioning groove, a locking buckle is arranged on one side of the pressing plate, the locking buckle is located on the peripheral side of the base, and the locking buckle is threadedly connected with the second screw hole.

[0026] In the utility model, a limit ring is further provided on the inner ring of the presser foot cup, and the limit ring is used to limit the position of the main shaft.

[0027] Compared with the prior art, the utility model has the following beneficial effects: the vacuum structure for CNC machine tools of the utility model can ensure that the brush can gently contact the surface of the workpiece during vacuuming to avoid waste splashing through the connection design between the brush and the bottom of the presser foot cup; the connection between the vacuum pipe and the suction device can timely remove cuttings and dust, and can avoid the accumulation of these impurities on the workpiece. The cross-section of the vacuum port is designed to be elliptical, and the major axis is distributed along the circumference of the presser foot cup. Since the vacuum port is lengthened along the circumferential direction, it is easy to form a circular vacuum airflow, so that the waste filled in the presser foot cup can be quickly sucked away, reducing the possibility of waste clogging in the presser foot cup. In addition, since the vacuum port is longer than the original circular vacuum port, the long circuit board can also be sucked away, so that the circuit board waste on the workbench will not accumulate, affecting the processing quality and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0029] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model.

[0030] Figure 2 The dust collecting structure of the preferred embodiment of the utility model is three-dimensional Figure 1 .

[0031] Figure 3 The cross section of the preferred embodiment of the utility model Figure 1 .

[0032] Figure 4 The cross section of the preferred embodiment of the utility model Figure 2 .

[0033] Figure 5 The dust collecting structure of the preferred embodiment of the utility model is three-dimensional Figure 2 .

[0034] Figure 6 This is an exploded view of the dust collection structure of a preferred embodiment of the utility model.

[0035] Figure 7 The dust collection structure cross section of the preferred embodiment of the utility model Figure 3 .

[0036] Figure numerals: 11, brush; 111, second inner hole; 112, fixing plate; 1121, first connecting groove; 113, bristles; 12, presser foot cup; 121, cup body; 1211, dust suction port; 1212, limiting ring; 1213, expanding groove; 1214, arc groove; 122, connector; 123, base; 1231, mounting groove; 1232, positioning groove; 1233, second screw hole; 124, first inner hole; 13, dust suction pipe; 14, support plate; 15, pressure plate; 151, locking buckle; 152, convex part; 21, spindle; 211, tool. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0038] In the figures, structurally similar elements are denoted by the same reference numerals.

[0039] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0040] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the utility model. Figure 2 The dust collecting structure of the preferred embodiment of the utility model is three-dimensional Figure 1 , Figure 3 The cross section of the preferred embodiment of the utility model Figure 1 .

[0041] The following is a preferred embodiment of a dust collection structure for a CNC machine tool provided by the utility model that can solve the above technical problems.

[0042] The preferred embodiment of the dust suction structure for CNC machine tools provided by the utility model is as follows: a dust suction structure for CNC machine tools, comprising a presser foot cup 12, a brush 11 and a dust suction pipe 13; a first inner hole 124 is arranged at the bottom end of the presser foot cup 12, a dust suction port 1211 is arranged at the side of the presser foot cup 12, and the dust suction port 1211 is communicated with the first inner hole 124; the brush 11 is connected to the bottom end of the presser foot cup 12, a second inner hole 111 is arranged on the brush 11, and the second inner hole 111 is communicated with the first inner hole 124; Hole 111 corresponds to the first inner hole 124; one end of the dust suction pipe 13 is connected to the dust suction port 1211, and the other end of the dust suction pipe 13 is connected to the suction device; wherein, the top of the presser foot cup 12 is connected to the main shaft 21, and a tool 211 is provided at the bottom end of the main shaft 21, and the tool 211 passes through the first inner hole 124 and the second inner hole 111 in sequence and extends; the cross-section of the dust suction port 1211 is elliptical, and the long axis of the dust suction port 1211 is distributed along the circumference of the presser foot cup 12.

[0043] During the processing of the workpiece by the CNC machine tool, scraps and strips of waste are continuously generated. The present application uses the connection design between the brush 11 and the bottom of the presser foot cup 12 to ensure that the brush 11 can gently contact the surface of the workpiece while vacuuming to avoid waste splashing; the connection between the vacuum pipe 13 and the suction device can timely remove cuttings and dust to avoid the accumulation of these impurities on the workpiece. The cross-section of the vacuum port 1211 is designed to be elliptical, and the long axis is distributed along the circumference of the presser foot cup 12. The elliptical vacuum port 1211 is also conducive to reducing airflow resistance, making the vacuuming process smoother.

[0044] In this embodiment, the design of the brush 11 can effectively clean the waste generated during the processing of the circuit board by the CNC machine tool, and the second inner hole 111 on the brush 11 allows the waste to be sucked in during the cleaning process; the presser foot cup 12 is not only connected to the top of the brush 11, but also its interior is connected to the second inner hole 111 of the brush 11. During the operation of the spindle 21, the presser foot cup 12 and the brush 11 can work together to suck the waste into the dust suction pipe 13 through the second inner hole 111 and the first inner hole 124. The dust suction port 1211 set on one side of the presser foot cup 12 ensures that the dust suction pipe 13 can smoothly suck in the waste and transfer it to the suction device. The cross-section of the dust suction port 1211 is designed to be elliptical, and the major axis is distributed along the circumference of the cup body 121 of the presser foot cup 12. Since the dust suction port 1211 is elongated in the circumferential direction, it is easy to form a ring-shaped dust suction airflow, thereby quickly sucking away the waste filled in the presser foot cup 12, reducing the possibility of waste clogging in the presser foot cup 12. In addition, since the suction port 1211 is longer than the original circular suction port 1211, long circuit boards can be sucked away, so that waste circuit boards on the workbench will not accumulate and affect the processing quality and efficiency.

[0045] The structure of the presser foot cup 12 in this embodiment is described in detail as follows:

[0046] Combination Figure 3 and Figure 4 In this embodiment, along the plane where the bottom surface of the cup body 121 is located, the angle between the central axis of the dust suction port 1211 and the plane where the bottom surface of the cup body 121 is located is an acute angle. The dust suction port 1211 is arranged upwardly and is closer to the processing surface, so that the airflow can enter the dust suction port 1211 more smoothly, and the dust suction port 1211 can capture waste more effectively.

[0047] In this embodiment, the long axis of the dust suction port 1211 close to the connector 122 gradually decreases. As the long axis of the dust suction port 1211 gradually decreases, the airflow will be gradually compressed and accelerated when entering the dust suction port 1211, which can more effectively suck impurities such as cutting chips and dust into the dust suction pipe 13, thereby improving the dust suction efficiency.

[0048] In this embodiment, a flaring groove 1213 is provided at the bottom end of the presser foot cup 12, the flaring groove 1213 is connected to the first inner hole 124, and the diameter of the sectional area of ​​the flaring groove 1213 gradually increases away from the first inner hole 124. The design of the flaring groove 1213 can also optimize the distribution of airflow inside the presser foot cup 12. When the airflow enters the flaring groove 1213 through the dust suction port 1211, it will diffuse along the shape of the flaring groove 1213, so as to form a ring-shaped dust suction airflow inside the presser foot cup 12, thereby improving the dust suction efficiency.

[0049] An arc groove 1214 is provided on the inner side of the presser foot cup 12. The arc groove 1214 is located at a section of the dust suction port 1211 away from the dust suction pipe 13. The cross-sectional width of the arc groove 1214 at the end away from the dust suction pipe 13 gradually increases, so as to facilitate the introduction of dust and other impurities in the presser foot cup 12 into the dust suction port 1211.

[0050] Combination Figure 5 and Figure 6 In this embodiment, the presser foot cup 12 includes a cup body 121 and a base 123; the top of the cup body 121 is connected to the main shaft 21, the dust suction port 1211 is located on one side of the cup body 121, and the bottom of the cup body 121 is provided with a first screw hole; the base 123 is connected to the brush 11, the first inner hole 124 is located on the base 123, and the base 123 is provided with a first connection hole, the first connection hole corresponds to the first screw hole, and the base 123 is detachably connected to the bottom of the cup body 121 through a screw. The presser foot cup 12 is detachably connected to the cup body 121 through the base 123, which is convenient for the production of the dust suction structure.

[0051] In this embodiment, the brush 11 includes a fixing plate 112 and bristles 113 arranged at the bottom end of the fixing plate 112 . The fixing plate 112 and the base 123 are detachably connected to facilitate the replacement of the brush 11 .

[0052] In this embodiment, a first connecting groove 1121 is provided on the peripheral side of the fixed plate 112; a mounting groove 1231 is provided on the base 123, and the top of the fixed plate 112 is embedded in the mounting groove 1231; the dust suction structure for CNC machine tools also includes a support plate 14 and a pressing plate 15; the support plate 14 is connected to the bottom end of the base 123, the support plate 14 is located on one side of the brush 11, and the support plate 14 is engaged with one side of the first connecting groove 1121; the pressing plate 15 is connected to the base 123, the pressing plate 15 is located on the other side of the brush 11, and the pressing plate 15 is engaged with the other side of the first connecting groove 1121. The support plate 14 and the pressing plate 15 are respectively engaged with the two sides of the fixed plate 112, and a stable overall structure is formed between the base 123, the pressing plate 15, the support plate 14 and the brush 11. The stability of the brush 11 during the dust suction process is ensured, and the brush 11 is not easy to loosen or fall off.

[0053] Combination Figure 5 , Figure 6 and Figure 7 A positioning groove 1232 is provided at the bottom of the base 123, and the positioning groove 1232 is connected to the installation groove 1231. A second screw hole 1233 is provided on the side of the base 123; the pressure plate 15 is embedded in the positioning groove 1232, and a locking buckle 151 is provided on one side of the pressure plate 15. The locking buckle 151 is located on the side of the base 123, and the locking buckle 151 is threadedly connected with the second screw hole 1233.

[0054] The pressing plate 15 is inserted into the positioning groove 1232 for easy positioning and assembly, and then the locking buckle 151 is threadedly connected with the second screw hole 1233 to complete the installation. The pressing plate 15 is inserted into the positioning groove 1232 to further enhance the stability of the brush 11 after installation.

[0055] In this embodiment, a limit ring 1212 is further provided on the inner ring of the presser foot cup 12 , and the limit ring 1212 is used to limit the position of the main shaft 21 to ensure the dust absorption space inside the presser foot cup 12 .

[0056] The working principle of this utility model:

[0057] 1. Prepare components (including presser foot cup 12, brush 11, dust suction tube 13, support plate 14, press plate 15, screws, etc.).

[0058] 2. Install the presser foot cup 12.

[0059] 1. Use screws to connect the base 123 and the bottom end of the cup body 121 through the first screw hole and the first connecting hole to ensure the stability of the overall structure of the presser foot cup 12.

[0060] 2. Connect the top of the cup body 121 of the presser foot cup 12 to the main shaft 21 to ensure a firm connection; the cutter 211 on the main shaft 21 penetrates the first inner hole 124 at the bottom of the presser foot cup 12.

[0061] 3. Connect the dust suction tube 13. Connect one end of the dust suction tube 13 to the dust suction port 1211 on the side of the presser foot cup 12, and ensure that the connection is sealed to prevent air leakage. Connect the other end of the dust suction tube 13 to the suction device.

[0062] 3. Install the brush 11.

[0063] 1. Insert the top end of the fixing plate 112 of the brush 11 into the mounting groove 1231 on the base 123.

[0064] 2. Install the support plate 14 at the bottom end of the base 123 so that it is located on one side of the brush 11 , and the support plate 14 is engaged with one side of the first connecting groove 1121 on the peripheral side of the fixing plate 112 .

[0065] 3. Install the pressing plate 15 on the base 123, and insert the pressing plate 15 into the positioning groove 1232 so that it is located on the other side of the brush 11. The convex portion 152 of the pressing plate 15 is engaged with the other side of the first connecting groove 1121; and the pressing plate 15 is threadedly connected to the second screw hole 1233 on the side of the base 123 through the locking buckle 151.

[0066] Working principle:

[0067] When the CNC machine tool processes the circuit board, the tool 211 at the bottom of the spindle 21 generates dust during the process of rotating and cutting the workpiece. The dust is sucked into the dust suction port 1211 due to the communication between the dust suction port 1211 and the first inner hole 124 and the second inner hole 111.

[0068] Since the dust suction port 1211 has an elliptical cross section and its major axis is distributed along the circumference of the presser foot cup 12, this design can more effectively capture dust around the path of the tool 211. Since the dust suction port 1211 is elongated along the circumferential direction, it is easy to form a circular dust suction airflow, thereby quickly sucking away the waste filled in the presser foot cup 12, reducing the possibility of waste clogging in the presser foot cup 12. In addition, since the dust suction port 1211 is longer than the original circular dust suction port 1211, long circuit boards can also be sucked away, so that the circuit board waste on the workbench will not accumulate, affecting the processing quality and processing efficiency.

[0069] The dust suction pipe 13 conveys the sucked dust to the suction device, thereby keeping the working environment of the CNC machine tool clean. At the same time, the design of the expanded groove 1213 and the arc groove 1214 in the presser foot cup 12 can further optimize the flow path of the dust and improve the dust suction efficiency.

[0070] This completes the working process of the dust suction structure for CNC machine tools of the preferred embodiment.

[0071] The entire dust collection structure is composed of a brush 11, a presser foot cup 12 and a dust collection pipe 13, which has a compact structure and is easy to install and disassemble on a CNC machine tool. At the same time, the connection between the presser foot cup 12 and the driving device and the connection between the dust collection pipe 13 and the suction device are both standardized, making the installation and replacement process easier.

[0072] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A dust collection structure for a CNC machine tool, characterized in that: include: A presser foot cup, wherein a first inner hole is arranged at the bottom end of the presser foot cup, and a dust suction port is arranged at the side of the presser foot cup, and the dust suction port is communicated with the first inner hole; A brush connected to the bottom end of the presser cup, wherein the brush is provided with a second inner hole, and the second inner hole corresponds to the first inner hole; and A dust suction pipe, one end of which is connected to the dust suction port, and the other end of which is connected to the suction device; The top of the presser cup is connected to the main shaft, and the bottom of the main shaft is provided with a cutter, which sequentially penetrates the first inner hole and the second inner hole and extends; The cross section of the dust suction port is elliptical, and the major axis of the dust suction port is distributed along the circumference of the presser foot cup.

2. The dust suction structure for a CNC machine tool according to claim 1, characterized in that: Along the plane where the bottom surface of the presser foot cup is located, the angle between the central axis of the dust suction port and the plane where the bottom surface of the presser foot cup is located is an acute angle.

3. The dust suction structure for a CNC machine tool according to claim 1, characterized in that: The major axis of the dust suction port close to one end of the connecting head gradually decreases.

4. The dust collection structure for a CNC machine tool according to claim 1, characterized in that: The bottom end of the presser foot cup is provided with a flaring groove, the flaring groove is communicated with the first inner hole, and the diameter of the sectional area of ​​the flaring groove gradually increases away from the first inner hole.

5. The dust suction structure for a CNC machine tool according to claim 1, characterized in that: An arc-shaped groove is arranged on the inner side of the presser foot cup. The arc-shaped groove is located at a section of the dust suction port away from the dust suction pipe. The cross-sectional width of the arc-shaped groove gradually increases at an end away from the dust suction pipe.

6. The dust suction structure for a CNC machine tool according to claim 1, characterized in that: The presser foot cup comprises: A cup body, the top of which is connected to the main shaft, the suction port is located on one side of the cup body, and a first screw hole is provided at the bottom of the cup body; The base is connected to the brush, the first inner hole is located on the base, and the base is provided with a first connecting hole, the first connecting hole corresponds to the first screw hole, and the base is detachably connected to the bottom end of the cup body through screws.

7. The dust suction structure for a CNC machine tool according to claim 6, characterized in that: The brush comprises a fixing plate and bristles arranged at the bottom end of the fixing plate, and the fixing plate is detachably connected to the base.

8. The dust suction structure for a CNC machine tool according to claim 7, characterized in that: The fixing plate is provided with a first connecting groove on its circumference; the base is provided with a mounting groove, and the top end of the fixing plate is embedded in the mounting groove; The dust collection structure for CNC machine tools also includes: A support plate connected to the bottom end of the base, the support plate is located on one side of the brush, and the support plate is engaged with one side of the first connecting groove; as well as A pressing plate is connected to the base, the pressing plate is located on the other side of the brush, and the pressing plate is engaged with the other side of the first connecting groove.

9. The dust suction structure for a CNC machine tool according to claim 8, characterized in that: The bottom end of the base is provided with a positioning groove, the positioning groove is connected with the mounting groove, and the side edge of the base is provided with a second screw hole; The pressing plate is embedded in the positioning groove, a locking buckle is arranged on one side of the pressing plate, the locking buckle is located on the peripheral side of the base, and the locking buckle is threadedly connected with the second screw hole.

10. The dust suction structure for a CNC machine tool according to claim 1, characterized in that: The inner ring of the presser foot cup is also provided with a limiting ring, and the limiting ring is used to limit the position of the main shaft.

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