Dustproof device for direct-arrangement tool magazine of numerical control fine carving machine

Abstract

The utility model belongs to dustproof device field, concretely relates to a dustproof device of numerical control engraving and milling machine straight -line arrangement tool magazine, including machine body, the upper end mounting of machine body two symmetrical distribution's support. The utility model discloses a unique design that adopts hydraulic rod to extend to drive dust cover to close and seal, so that the equipment can obtain sustained, stable sealing pressure during non-tool changing period, and the anti-vibration performance is good, when the dust cover is closed, its movement drives the fixed elastic cover tension, forces the other side edge of elastic cover to be closely pressed and covered on the sealing strip fixed in the horizontal bar, this design ingeniously forms a static sealing barrier with "elastic cover-sealing strip" interface as the core, and the elastic cover itself serves as a dynamic flexible connection, which can effectively compensate the assembly tolerance between components and the wear caused by long-term operation, completely eliminates the problem of dust intrusion from the joint gap between the dust cover and the straight-line arrangement frame main body, and provides a clean storage environment for the tool.

Description

Technical Field

[0001] This utility model relates to the technical field of dustproof devices, specifically a dustproof device for a CNC engraving machine's straight-line tool magazine. Background Technology

[0002] CNC engraving machines, as high-precision machining equipment, are widely used in modern precision manufacturing. Their tool magazine systems, especially linear tool magazines, are highly favored due to their simple structure and fast tool changing speed. However, in practical use, dust prevention for linear tool magazines remains a technical challenge. Engraving machines generate a large amount of dust and fine chips during operation. These contaminants easily penetrate the interior of the tool magazine and adhere to the tools and tool holder. Long-term dust accumulation leads to a series of problems: First, it accelerates wear at the contact points between the tools and the tool holder, affecting tool positioning accuracy and potentially causing machining errors; second, dust entering the moving parts inside the tool magazine accelerates mechanical aging and shortens the equipment's lifespan; third, cleaning the dust accumulated in the confined space of the tool magazine is extremely difficult, increasing the complexity and cost of equipment maintenance. Currently, the common protective measure is to install a single, integrated dust cover on the tool magazine. While this dust cover can block external dust to some extent, it needs to be opened frequently during tool changes, and its sealing performance is often unsatisfactory. Gaps at the connection between the dust cover and the tool magazine body can easily become channels for dust intrusion. Furthermore, static dust covers cannot actively remove fine dust that has already entered or adhered to the tool surface, resulting in limited protective effectiveness. Dust tends to accumulate, especially in the tool holder area, affecting tool clamping stability. Therefore, improvements to existing technology are needed. Summary of the Invention

[0003] The purpose of this invention is to provide a dustproof device for a straight-line tool magazine of a CNC engraving machine, which solves the problem that it is inconvenient to prevent dust from entering straight-line tools.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dustproof device for a CNC engraving machine's linear tool magazine, comprising a machine body, two symmetrically distributed supports mounted on the upper end of the machine body, a linear frame fixedly mounted on the upper end of the two supports, multiple evenly distributed tool holders fixedly mounted on the upper end of the linear frame, a pneumatic dustproof mechanism provided inside the linear frame, a dustproof cover hinged to the outer side of the linear frame, two symmetrically distributed hydraulic rods hinged inside the machine body, a horizontal bar fixedly mounted on the outer side of the linear frame, a sealing strip adhered to the upper end of the horizontal bar, and an elastic cover provided on the sealing strip.

[0005] Preferably, two symmetrically distributed anti-slip strips are bonded to the inner side of the arc surface of the tool holder. The anti-slip strips are arc-shaped and can increase the stability of the tool placement.

[0006] Preferably, a hinge shaft is fixedly installed on the outer side of the dust cover, and the output end of the hydraulic rod is hinged to the hinge shaft. The hydraulic rod can drive the dust cover to deflect through the hinge shaft.

[0007] Preferably, one end of the elastic cover is fixedly connected to the dust cover, and the other end of the elastic cover is fixedly connected to the sealing strip. The elastic cover can undergo elastic deformation to cover the straight frame inside.

[0008] Preferably, the pneumatic dustproof mechanism includes a miniature air pump, which is fixedly installed on the upper part of the inner wall of the straight frame. A miniature booster is fixedly installed on the top inner side of the straight frame. A duckbill nozzle is fixedly installed on the outer side of the output end of the miniature booster. A filter frame is fixedly installed on the bottom inner side of the straight frame. An arc-shaped groove is opened on the inner side of the tool holder. The duckbill nozzle can spray airflow into the range of the tool through the arc-shaped groove.

[0009] Preferably, the output end of the micro air pump is fixedly connected to the micro booster, and the duckbill nozzle is fixedly connected to the straight frame. The micro booster can pressurize the airflow.

[0010] Preferably, a filter screen is fixedly installed on the lower inner side of the filter frame, and a filter cloth is fixedly installed on the upper inner side of the filter frame. The filter screen is in contact with the filter cloth, and the filter screen and filter cloth can filter the airflow entering the straight frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model employs a unique design that uses a hydraulic rod to extend and drive the dust cover to close and seal. This design ensures continuous and stable sealing pressure during non-tool changing periods, resulting in good vibration resistance. When the dust cover closes, its movement causes the elastic cover fixed to it to tighten, forcing the other edge of the elastic cover to tightly press against the sealing strip fixed to the horizontal bar. This design cleverly forms a static sealing barrier with the "elastic cover-sealing strip" interface as its core. The elastic cover itself acts as a dynamic flexible connection, effectively compensating for assembly tolerances between components and wear caused by long-term operation. This completely eliminates the problem of dust intruding from the gap between the dust cover and the main body of the straight rack, providing a clean storage environment for the tools.

[0012] 2. This utility model utilizes a pneumatic dustproof mechanism consisting of a miniature air pump, a booster, and a duckbill nozzle. This mechanism automatically activates before and after tool changes, generating a concentrated high-pressure airflow that precisely blows onto the arc-shaped groove inside the tool holder and the tool shank, actively removing dust and chips. The blown-off contaminants enter the filter frame with the airflow and undergo two stages of purification via the internal filter cloth and filter screen. The clean air can then be recycled. This not only avoids secondary dust pollution but also embodies an energy-saving and environmentally friendly design concept. This active cleaning mechanism complements the aforementioned mechanical sealing, forming a comprehensive dustproof system that significantly improves tool clamping stability, tool change positioning accuracy, and equipment lifespan. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 Enlarged frontal sectional view of a local structure; Figure 3 For the present utility model Figure 2 Enlarged front sectional view of the straight-line rack; Figure 4 For the present utility model Figure 2 A top-view sectional enlarged view of the tool holder.

[0014] In the diagram: 1. Body; 2. Support frame; 3. Straight frame; 4. Blade holder; 5. Pneumatic dustproof mechanism; 6. Anti-slip strip; 7. Dust cover; 8. Hydraulic rod; 9. Hinge shaft; 10. Horizontal bar; 11. Sealing strip; 12. Elastic cover; 51. Miniature air pump; 52. Miniature booster; 53. Duckbill nozzle; 54. Filter frame; 55. Filter screen; 56. Filter cloth; 57. Arc groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4A dustproof device for a CNC engraving machine's linear tool magazine includes a body 1. Two symmetrically distributed supports 2 are installed on the upper end of the body 1. A linear frame 3 is fixedly installed on the upper end of the two supports 2. Multiple evenly distributed tool holders 4 are fixedly installed on the upper end of the linear frame 3. A pneumatic dustproof mechanism 5 is provided inside the linear frame 3. A dust cover 7 is hinged to the outside of the linear frame 3. Two symmetrically distributed hydraulic rods 8 are hinged inside the body 1. A horizontal bar 10 is fixedly installed on the outside of the linear frame 3. A sealing strip 11 is glued to the upper end of the horizontal bar 10. An elastic cover 12 is provided on the sealing strip 11.

[0017] Please see Figure 1-4 Two symmetrically distributed anti-slip strips 6 are bonded to the inner side of the arc surface of the tool holder 4. The anti-slip strips 6 are arc-shaped and can increase the stability of the tool placement. A hinge shaft 9 is fixedly installed on the outer side of the dust cover 7. The output end of the hydraulic rod 8 is hinged to the hinge shaft 9. The hydraulic rod 8 can drive the dust cover 7 to deflect through the hinge shaft 9. One end of the elastic cover 12 is fixedly connected to the dust cover 7, and the other end of the elastic cover 12 is fixedly connected to the sealing strip 11. The elastic cover 12 can undergo elastic deformation to cover the straight frame 3 inside.

[0018] Please see Figure 1-4 The pneumatic dustproof mechanism 5 includes a miniature air pump 51. The miniature air pump 51 is fixedly installed on the upper part of the inner wall of the straight frame 3. The miniature booster 52 is fixedly installed on the top inner side of the straight frame 3. The duckbill nozzle 53 is fixedly installed on the outer side of the output end of the miniature booster 52. The filter frame 54 is fixedly installed on the bottom inner side of the straight frame 3. The inner side of the tool holder 4 has an arc-shaped groove 57. The duckbill nozzle 53 can spray airflow into the range of the tool through the arc-shaped groove 57. The output end of the miniature air pump 51 is fixedly connected to the miniature booster 52. The duckbill nozzle 53 is fixedly connected to the straight frame 3. The miniature booster 52 can pressurize the airflow. The filter screen 55 is fixedly installed on the lower inner side of the filter frame 54. The filter cloth 56 is fixedly installed on the upper inner side of the filter frame 54. The filter screen 55 is in contact with the filter cloth 56. The filter screen 55 and the filter cloth 56 can filter the airflow entering the straight frame 3.

[0019] The specific implementation process of this utility model is as follows: I. Non-working standby mode: Elastic sealing protection: At this time, the hydraulic rod 8 is in the extended state. By pushing the hinge shaft 9, the dust cover 7 is deflected downward to the closed position. During this process, the dust cover 7 drives the other end of the elastic cover 12 fixed to it to move downward, so that the entire elastic cover 12 is fully tensioned and its edge is tightly attached to the crossbar 10 on the outside of the straight frame 3. The sealing strip 11 is installed on the crossbar 10. Its core function is to ensure that a seamless static seal is formed between the tensioned edge of the elastic cover 12 and the main structure of the straight frame 3. This flexible sealing system, which consists of the dust cover 7, the elastic cover 12, the crossbar 10 and the sealing strip 11, completely covers and protects the tool and completely isolates it from external dust. II. Tool changing process: Opening Phase: When the CNC system issues a tool change command, the hydraulic rod 8 retracts first, pulling the dust cover 7 upwards and opening it via the hinge shaft 9. The movement of the dust cover 7 relaxes the tension on the elastic cover 12, making room for the robot arm to access the tool.

[0020] Pneumatic cleaning stage: Before and after the tool changing robot takes out or puts back the tool, the pneumatic dust prevention mechanism 5 is triggered, the micro air pump 51 is started, compressed air is generated and delivered to the micro booster 52. After the micro booster 52 pressurizes the airflow, it forms a high-speed jet through the duckbill nozzle 53 to accurately and powerfully blow the arc groove 57 on the inner side of the tool holder 4 and the tool shank. Dust treatment: The dust blown down enters the filter frame 54 with the airflow, and is filtered through layers of filter cloth 56 and filter screen 55 inside, so that the clean air is recycled. Closing and sealing stage: After the tool changing action is completed, the hydraulic rod 8 extends again, pushing the dust cover 7 to reset. The dust cover 7 tensions the elastic cover 12 again, forcing the edge of the elastic cover 12 to press against the sealing strip 11, restoring the full elastic sealing protection state as in the first step. 3. Continuous protection: Throughout the entire engraving process, as long as the tool is not changed, the device always keeps the dust cover 7 closed through the extended hydraulic rod 8, and provides uninterrupted sealing through the continuously tensioned elastic cover 12, providing a clean storage environment for the tools.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dustproof device for a CNC engraving machine's linear tool magazine, comprising a machine body (1), characterized in that: The upper end of the machine body (1) is equipped with two symmetrically distributed brackets (2), and the upper ends of the two brackets (2) are fixedly mounted with a straight frame (3). The upper end of the straight frame (3) is fixedly mounted with multiple evenly distributed knife holders (4). The inside of the straight frame (3) is equipped with a pneumatic dustproof mechanism (5). The outside of the straight frame (3) is hinged with a dust cover (7). The inside of the machine body (1) is hinged with two symmetrically distributed hydraulic rods (8). The outside of the straight frame (3) is fixedly mounted with a horizontal bar (10). The upper end of the horizontal bar (10) is glued with a sealing strip (11). The sealing strip (11) is equipped with an elastic cover (12).

2. The dustproof device for a CNC engraving machine's linear tool magazine according to claim 1, characterized in that: Two symmetrically distributed anti-slip strips (6) are bonded to the inner side of the arc surface of the tool holder (4), and the anti-slip strips (6) are arc-shaped.

3. The dustproof device for a CNC engraving machine's linear tool magazine according to claim 1, characterized in that: A hinge shaft (9) is fixedly installed on the outside of the dust cover (7), and the output end of the hydraulic rod (8) is hinged to the hinge shaft (9).

4. The dustproof device for a CNC engraving machine's linear tool magazine according to claim 1, characterized in that: One end of the elastic cover (12) is fixedly connected to the dust cover (7), and the other end of the elastic cover (12) is fixedly connected to the sealing strip (11).

5. The dustproof device for a CNC engraving machine's linear tool magazine according to claim 1, characterized in that: The pneumatic dustproof mechanism (5) includes a micro air pump (51), the micro air pump (51) is fixedly installed on the upper part of the inner wall of the straight frame (3), the micro booster (52) is fixedly installed on the top inner side of the straight frame (3), the duckbill nozzle (53) is fixedly installed on the outer side of the output end of the micro booster (52), the filter frame (54) is fixedly installed on the bottom inner side of the straight frame (3), and the inner side of the knife holder (4) is provided with an arc groove (57).

6. The dustproof device for a CNC engraving machine's linear tool magazine according to claim 5, characterized in that: The output end of the micro air pump (51) is fixedly connected to the micro booster (52), and the duckbill nozzle (53) is fixedly connected to the straight frame (3).

7. The dustproof device for a CNC engraving machine's linear tool magazine according to claim 5, characterized in that: A filter screen (55) is fixedly installed on the lower inner side of the filter frame (54), and a filter cloth (56) is fixedly installed on the upper inner side of the filter frame (54). The filter screen (55) is in contact with the filter cloth (56).

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