A protective door structure used for CNC machine tools

Abstract

The present invention relates to a protective door structure applied to CNC machine tools in the field of CNC machine tool technology, comprising a protective door body, an observation window, and a cleaning mechanism. The protective door body is composed of an outer L-shaped plate and an inner L-shaped plate that are spaced apart. The outer edges of the outer L-shaped plate and the inner L-shaped plate are respectively provided with side walls extending vertically outward, so that the inner L-shaped plate can be nested in the outer L-shaped plate. The outer L-shaped plate and the inner L-shaped plate are both made by a bending process, so that the inner and outer sides of the protective door body are both flat. The protective door body of the present invention is composed of an outer L-shaped plate and an inner L-shaped plate made by a bending process, thereby not only improving the flatness of the inner and outer sides of the protective door body, but also significantly reducing the difficulty of cleaning the scraper module. The protective door body composed of the outer L-shaped plate and the inner L-shaped plate nested together not only improves the overall structural strength, but also significantly reduces the difficulty of the production process, greatly reducing the manufacturing production cost of the protective door.

Description

Technical Field

[0001] The present invention relates to the technical field of numerically controlled machine tools, and in particular to a protective door structure applied to numerically controlled machine tools. Background Art

[0002] A CNC machine tool (NC machine tool) is a machine tool that uses computer numerical control technology for processing. It controls the machine tool's movement and processing process in a programmed manner, achieving high-precision, high-efficiency automated processing. CNC machine tools are widely used in many industries, such as machinery manufacturing, aerospace, automobile manufacturing, and electronic equipment. CNC machine tools are short for digitally controlled machine tools. They are automated machine tools equipped with a program control system. They can move the machine tool and process parts according to a pre-programmed program. They integrate the latest technologies in mechanics, automation, computers, measurement, and microelectronics. The basic components include a processing program carrier, a CNC device, a servo drive device, a machine tool body, and other auxiliary devices. CNC machine tools solve the problem of complex, precise, small-batch, and high-variety parts processing. They are flexible and high-efficiency automated machine tools, representing the development direction of modern machine tool control technology and a typical mechatronics product. CNC machine tool protective doors are a protective device used to protect the safety of operators and equipment. They are usually designed to isolate the processing area from the external environment when the machine tool is in operation.

[0003] A Chinese invention patent publication number CN118990115A discloses a protective door for CNC machine tools, the key points of its technical solution are: it includes an outer shell, a groove A is opened in the middle of the outer shell, an opening and closing mechanism is fixedly installed on the front of the outer shell, a protective mechanism is fixedly connected to one side of the opening and closing mechanism, a cleaning mechanism is fixedly connected to the outer surface of the protective mechanism, and a sealing mechanism is fixedly connected to one side of the protective mechanism; through the cleaning mechanism arranged in conjunction with the above structure, when the CNC machine tool is processing, debris will fall inside, and the debris will be adsorbed on the protective door under the action of impact force, but repeated disassembly of the protective door will cause wear to the parts on the protective door, which may cause the protective door to fall during processing. The cleaning mechanism is fixed on the opening and closing mechanism. During each opening and closing process of the opening and closing mechanism, the cleaning mechanism will clean the inner side of the protective door to achieve a linkage effect, ensure the normal use of the CNC machine tool, and increase its service life.

[0004] However, the above technologies often have the following defects: First, too many structures are arranged on the side of the protective door close to the CNC machine tool, which not only makes it easy for debris to accumulate, but also makes it difficult to clean and maintain the protective door. Secondly, due to the complex protection and sealing structure at the window of the protective door, it not only affects the use and observation, but also makes it difficult to further reduce the manufacturing cost; thirdly, the use of a brush as a cleaning mechanism, although it can sweep away some debris, cannot scrape off the coolant adhering to the window, which is not conducive to the operator observing the operating status of the CNC machine tool through the window. Summary of the Invention

[0005] The present invention provides a protective door structure applied to a CNC machine tool to solve the problems mentioned in the above background technology.

[0006] The object of the present invention is achieved in the following ways:

[0007] A protective door structure for a CNC machine tool comprises a protective door body slidably mounted on the CNC machine tool, an observation window being provided on the protective door body, and a cleaning mechanism fixedly mounted on the CNC machine tool being provided along the sliding direction of the protective door body, the cleaning mechanism being aligned with the observation window, the cleaning mechanism comprising a fixed frame and a scraper module mounted on the fixed frame, the scraper module extending toward the protective door body and abutting against the inner side surface of the protective door body; the protective door body is composed of an outer L-shaped plate and an inner L-shaped plate arranged at intervals, the outer edges of the outer L-shaped plate and the inner L-shaped plate are respectively provided with vertically arranged side walls, so that the inner L-shaped plate can be nested on one side of the outer L-shaped plate, and the outer L-shaped plate and the inner L-shaped plate are both made by a bending process, so that the inner and outer sides of the protective door body are both flat.

[0008] Furthermore, the upper and lower ends of the protective door body are connected to the CNC machine tool through a guide rail assembly and a pulley assembly respectively.

[0009] Furthermore, the guide rail assembly includes a fixed bracket and a circular track installed on the fixed bracket. The fixed bracket is vertically installed above the protective door body, and the upper end of the protective door body is slidably engaged with the circular track through a ball slider.

[0010] Furthermore, a positioning plane for abutting and fitting with the ball slider is provided at one end of the circular track away from the fixing bracket, and positioning protrusions for fitting with the circular track are provided at both ends of the fixing bracket.

[0011] Furthermore, the pulley assembly includes a slide rail and a rotating pulley installed at the lower end of the protective door body. The slide rail is installed on the CNC machine tool through a load-bearing bracket. A discharge port is formed at the end of the slide rail and the end of the load-bearing bracket. The rotating pulley can roll along the slide rail, and the outer circumference of the rotating pulley is provided with a groove for engaging with the slide rail.

[0012] Furthermore, the upper and lower ends of the fixed frame are symmetrically provided with limiting sliding grooves, and the scraper module is slidably mounted on the limiting sliding grooves through a fixed carrier plate.

[0013] Furthermore, it also includes a liquid storage tank arranged in the protective door body and a spray head arranged above the observation window. The spray head is arranged on the inner side of the protective door body, and the liquid storage tank is connected to the spray head through a liquid pump.

[0014] Furthermore, the fixed frame is arranged parallel to or perpendicular to the sliding direction of the protective door body.

[0015] Furthermore, the scraper module is composed of a scraper body and a scraping portion integrally formed on one side of the scraper body. A hollow structure is arranged through the middle of the scraper body, and the scraping portion is composed of a plurality of arc protrusions arranged side by side.

[0016] Furthermore, a plurality of the scraper modules are provided, and the scraper modules are tilted to one side, and the plurality of scraper modules are stacked end to end from top to bottom.

[0017] The protective door body of the present invention is composed of an outer L-shaped plate and an inner L-shaped plate made by a bending process, which not only improves the flatness of the inner and outer sides of the protective door body, but also significantly reduces the difficulty of cleaning the scraper module. The protective door body composed of the nested outer L-shaped plate and the inner L-shaped plate not only improves the overall structural strength, but also significantly reduces the difficulty of the production process, and greatly reduces the manufacturing cost of the protective door. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first schematic diagram of the protective door structure in the first embodiment;

[0019] Figure 2 This is a second schematic diagram of the protective door structure in the first embodiment;

[0020] Figure 3 This is a schematic diagram of the installation of the scraper module in the first embodiment;

[0021] Figure 4 This is a schematic diagram of the explosion of the protective door body of the present invention;

[0022] Figure 5This is a first structural schematic diagram of the protective door structure of the present invention;

[0023] Figure 6 This is a second structural schematic diagram of the protective door structure of the present invention;

[0024] Figure 7 is a partial schematic diagram of the guide rail assembly of the present invention;

[0025] Figure 8 is a partial schematic diagram of the pulley assembly of the present invention;

[0026] Figure 9 This is a front view of the cleaning mechanism in the second embodiment;

[0027] Figure 10 This is an explosion diagram of the cleaning mechanism in the second embodiment;

[0028] Figure 11 This is a schematic diagram of the use of the protective door structure in the second embodiment;

[0029] The reference numerals in the figure are: 1-protective door body, 101-outer L-shaped plate, 102-inner L-shaped plate, 103-side wall, 2-observation window, 3-fixed frame, 301-fixed carrier plate, 302-limiting slide groove, 4-scraper module, 401-scraper body, 402-hollow structure, 403-scraping part, 404-arc protrusion, 5-spray head, 6-pulley assembly, 601-slide rail, 602-rotating pulley, 603-groove, 7-guide rail assembly, 701-fixed bracket, 702-circular track, 703-positioning plane, 704-positioning protrusion, 705-ball slider, 8-protective plate, 9-discharge port, 10-CNC machine tool. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1:

[0032] In this embodiment, refer to Figure 1 - Figure 2 A specific implementation of a protective door structure applied to a CNC machine tool 10 includes a protective door body 1 slidably mounted on the CNC machine tool 10, and an observation window 2 is provided on the protective door body 1. The observation window 2 includes an opening penetrating the middle of the protective door body 1 and two transparent plates respectively arranged on both sides of the opening. In this embodiment, the transparent plates are preferably made of acrylic material or glass material.

[0033] A cleaning mechanism fixedly mounted on the CNC machine tool 10 is provided along the sliding direction of the protective door body 1. The cleaning mechanism is aligned with the observation window 2. The cleaning mechanism includes a fixed frame 3 and a scraper module 4 mounted on the fixed frame 3. The scraper module 4 extends toward the protective door body 1 and abuts against the inner side surface of the protective door body 1. As a result, when the protective door body 1 is opened and closed, the scraper module 4 can simultaneously scrape off debris and coolant adhering to the inner sides of the protective door body 1 and the observation window 2, effectively improving the cleanliness of the protective door body 1, eliminating the operator's frequent manual cleaning of the observation window 2, improving the efficiency of cleaning and maintenance of the CNC machine tool 10, and at the same time ensuring the visual clarity of the observation window 2, effectively reducing the probability of safety accidents.

[0034] like Figure 1-2 As shown, in order to improve the space utilization and sealing of the CNC machine tool 10, this embodiment sets the fixed frame 3 perpendicular to the sliding direction of the protective door body 1, so that the protective door body 1 can slide close to the CNC machine tool 10, greatly reducing the distance between the protective door body 1 and the CNC machine tool 10, and since the scraper module 4 is abutted against the inner side of the protective door body 1, the sealing of the CNC machine tool 10 is greatly improved. The significant improvement in the sealing of the CNC machine tool 10 can effectively reduce working noise, and at the same time can significantly reduce the overflow of atomized coolant, thereby improving the working environment of CNC operations, reducing the pollution of noise and coolant to operators, and protecting the occupational health of operators.

[0035] like Figure 3 As shown, the scraper module 4 in this embodiment is composed of a scraper body 401 and a scraping part 403 integrally formed on one side of the scraper body 401. A hollow structure 402 is arranged through the middle of the scraper body 401. The hollow structure 402 effectively improves the elasticity of the scraper body 401, greatly reduces the resistance to pushing the protective door body 1, and improves the process effect of opening and closing the protective door body 1. The scraper modules 4 in the present invention are made of silicone or other soft plastic materials.

[0036] Furthermore, the scraping portion 403 is composed of three arc protrusions 404 arranged side by side. Every time the protective door body 1 completes an opening and closing action, the three arc protrusions 404 arranged side by side can perform a scraping on the protective door body 1 and the observation window 2, so that each opening and closing action of the scraping portion 403 can produce a triple scraping effect on the protective door body 1 and the observation window 2, thereby greatly improving the scraping efficiency of debris and coolant, and avoiding the appearance of debris residue in the observation window 2.

[0037] Furthermore, in order to reduce the coolant residue at the observation window 2, this embodiment provides a liquid storage tank for storing detergent inside the protective door body 1, and a spray head 5 for spraying detergent is provided above the observation window 2 on the inner side of the protective door body 1. The liquid storage tank is connected to the spray head 5 via a liquid pump. When in use, the liquid pump can pump the detergent in the liquid storage tank to the spray head 5, which then sprays the detergent evenly on the observation window 2, thereby cleaning the coolant residue at the observation window 2 with the detergent. The spray head 5 is usually provided on one side above the observation window 2. During the opening and closing process of the protective door panel, the scraper module 4 can be used to evenly spread the detergent across the entire observation window 2, thereby improving the utilization rate of the detergent.

[0038] Furthermore, in this embodiment, a control switch for electrically connecting to a liquid pump is provided on the handle of the protective door body 1. In actual use, the operator can control the operating time of the liquid pump via the control switch according to the degree of contamination of the observation window 2, thereby spraying an appropriate amount of detergent onto the observation window 2 through the spray head 5, thereby reducing resource waste. A feed port connected to the liquid storage tank is provided on the outside of the protective door body 1 to facilitate the operator to replenish the detergent.

[0039] like Figure 4 As shown, the protective door body 1 in this embodiment is composed of an outer L-shaped plate 101 and an inner L-shaped plate 102 arranged at intervals, and the outer edges of the outer L-shaped plate 101 and the inner L-shaped plate 102 are respectively provided with vertically arranged side walls 103, and the side walls 103 are used to form a spacing between the outer L-shaped plate 101 and the inner L-shaped plate 102, and to enable the inner L-shaped plate 102 to be nested on one side of the outer L-shaped plate 101. The protective door body 1 composed of the nested outer L-shaped plate 101 and the inner L-shaped plate 102 not only improves the overall structural strength, but also significantly reduces the difficulty of the production process, thereby greatly reducing the manufacturing cost of the protective door.

[0040] The side walls 103 at the outer edges of the outer L-shaped plate 101 and the inner L-shaped plate 102 are both made by a bending process, so that the inner and outer sides of the protective door body 1 are both flat. The protective door body 1 is composed of the outer L-shaped plate 101 and the inner L-shaped plate 102 made by the bending process, which not only improves the flatness of the inner and outer sides of the protective door body 1, but also significantly reduces the difficulty of cleaning the scraper module 4.

[0041] In actual application, due to the effect of gravity, the probability of debris splashing and accumulating below the protective door body 1 is much greater than that above the protective door body 1. Therefore, if Figure 5-6As shown, in this embodiment, the lower end of the protective door body 1 is connected to the CNC machine tool 10 using a pulley assembly 6. The use of a pulley assembly 6 with a simple structure is not only convenient for cleaning and maintenance, but also not easily affected by flying debris, with stable transmission effect, low maintenance cost, and excellent load-bearing effect. The upper end of the protective door body 1 is suspended and connected to the CNC machine tool 10 using a ball guide rail assembly 7 with higher displacement accuracy and smoother movement, thereby reducing the resistance to the movement of the protective door body 1 and improving the user experience. In this embodiment, the protective door body 1 uses pulleys and sliders at the upper and lower ends respectively, which greatly reduces the difficulty of maintenance while ensuring the stability and smoothness of the movement of the protective door body 1.

[0042] During operation of the CNC machine tool 10, the guide rail assembly 7 mounted on the upper end of the protective door body 1 is effectively protected by the protective door body 1, and debris is generally unlikely to splash into the guide rail assembly 7. The pulley assembly 6 located at the lower end of the protective door body 1 is protected by a protective plate 8 provided at the lower end of the protective door body 1 at the position of the pulley assembly 6. This protective plate 8 also effectively prevents debris from splashing into the pulley assembly 6, thereby increasing the service life of the pulley assembly 6.

[0043] like Figure 7 As shown, the guide rail assembly 7 includes a fixed bracket 701 and a circular track 702 installed on the fixed bracket 701. The fixed bracket 701 is vertically installed above the protective door body 1. The upper end of the protective door body 1 slides with the circular track 702 through a ball slider 705. The end of the circular track 702 away from the fixed bracket 701 is provided with a positioning plane 703 for abutting with the ball slider 705, which is used to prevent the ball slider 705 from tilting and offsetting on the circular track 702. Both ends of the fixed bracket 701 are provided with positioning protrusions 704 for interlocking with the circular track 702, which are used to improve the assembly efficiency of the guide rail assembly 7.

[0044] like Figure 8 As shown, the pulley assembly 6 includes a slide rail 601 and a rotating pulley 602 installed at the lower end of the protective door body 1. The open rotating rotating pulley 602 is not easily blocked by debris, and the cleaning and maintenance are easy. The slide rail 601 is installed on the CNC machine tool 10 through a load-bearing bracket. The end of the slide rail 601 and the end of the load-bearing bracket form a discharge port 9. The rotating pulley 602 can roll along the slide rail 601. The outer circumference of the rotating pulley 602 is provided with a groove 603 for engaging with the slide rail 601. The engagement of the rotating pulley 602 with the groove 603 can improve the translational stability of the pulley assembly 6 and avoid deviation of the opening and closing action of the protective door body 1. The setting of the discharge port 9 can facilitate the discharge of debris accumulated on the slide rail 601 and reduce the difficulty of cleaning and maintenance of the slide rail 601.

[0045] Example 2:

[0046] like Figure 9-11 As shown, the difference between this embodiment and embodiment 1 is that the fixed frame 3 is parallel to the sliding direction of the protective door body 1. This arrangement can more reasonably arrange the scraper module 4. In this embodiment, the scraper module 4 can be tilted to one side to guide the debris (or cleaning agent or coolant) to be discharged downward, thereby reducing the probability of the debris leaving scratches on the observation window 2.

[0047] Furthermore, the scraper modules 4 are provided in plurality, and the plurality of scraper modules 4 are sequentially stacked end to end from top to bottom. In this embodiment, two scraper modules 4 are stacked end to end. The two scraper modules 4 arranged in sections above and below can effectively scrape away debris, and the end to end stacking can fully connect and guide the discharged debris (or cleaning agent or coolant) downward, effectively avoiding debris (or cleaning agent or coolant) residue.

[0048] Furthermore, limiting grooves 302 are symmetrically provided at the upper and lower ends of the fixed frame 3, and the scraper module 4 is slidably mounted on the limiting grooves 302 through a fixed carrier plate 301, and the scraper module 4 is mounted on the fixed carrier plate 301 through a T-shaped structure at the tail. The fitting and sliding installation method can improve the maintenance and replacement efficiency of the scraper module 4.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are all within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A protective door structure for a CNC machine tool, comprising a protective door body (1) slidably mounted on the CNC machine tool (10), wherein the protective door body (1) is provided with an observation window (2), and is characterized in that: A cleaning mechanism fixedly mounted on a numerically controlled machine tool (10) is provided along the sliding direction of the protective door body (1), the cleaning mechanism being aligned with the observation window (2), the cleaning mechanism comprising a fixed frame (3) and a scraper module (4) mounted on the fixed frame (3), the scraper module (4) extending in the direction of the protective door body (1) and abutting against the inner side surface of the protective door body (1); The protective door body (1) is composed of an outer L-shaped plate (101) and an inner L-shaped plate (102) arranged at intervals. The outer edges of the outer L-shaped plate (101) and the inner L-shaped plate (102) are respectively provided with vertically arranged side walls (103), so that the inner L-shaped plate (102) can be nested on one side of the outer L-shaped plate (101). The outer L-shaped plate (101) and the inner L-shaped plate (102) are both made by a bending process, so that the inner and outer sides of the protective door body (1) are both flat. The sliding of the fixed frame (3) and the protective door body (1) The scraper module (4) is arranged parallel to or perpendicular to the moving direction; the scraper module (4) is composed of a scraper body (401) and a scraping portion (403) integrally formed on one side of the scraper body (401); a hollow structure (402) arranged through the middle of the scraper body (401) is provided, and the scraping portion (403) is composed of a plurality of arc protrusions (404) arranged side by side; a plurality of the scraper modules (4) are provided, and the scraper modules (4) are arranged tilted to one side, and the plurality of scraper modules (4) are stacked in sequence from top to bottom.

2. The protective door structure for a CNC machine tool according to claim 1, characterized in that: The upper and lower ends of the protective door body (1) are connected to the CNC machine tool (10) via a guide rail assembly (7) and a pulley assembly (6) respectively.

3. The protective door structure for a CNC machine tool according to claim 2, characterized in that: The guide rail assembly (7) comprises a fixed bracket (701) and a circular track (702) mounted on the fixed bracket (701); the fixed bracket (701) is vertically mounted above the protective door body (1); the upper end of the protective door body (1) is slidably engaged with the circular track (702) via a ball slider (705).

4. The protective door structure for a CNC machine tool according to claim 3, characterized in that: One end of the circular track (702) away from the fixed bracket (701) is provided with a positioning plane (703) for abutting with the ball slider (705), and both ends of the fixed bracket (701) are provided with positioning protrusions (704) for engaging with the circular track (702).

5. A protective door structure for a CNC machine tool according to any one of claims 3 to 4, characterized in that: The pulley assembly (6) includes a slide rail (601) and a rotating pulley (602) installed at the lower end of the protective door body (1); the slide rail (601) is installed on the CNC machine tool (10) through a supporting bracket; a discharge port (9) is formed at the end of the slide rail (601) and the end of the supporting bracket; the rotating pulley (602) can roll along the slide rail (601); and a groove (603) is provided on the outer circumference of the rotating pulley (602) for engaging with the slide rail (601).

6. The protective door structure for a CNC machine tool according to claim 1, characterized in that: Limiting slide grooves (302) are symmetrically provided at the upper and lower ends of the fixed frame (3), and the scraper module (4) is slidably mounted on the limiting slide grooves (302) via a fixed carrier plate (301).

7. A protective door structure for a CNC machine tool according to claim 1 or 6, characterized in that: It also includes a liquid storage tank arranged in the protective door body (1) and a spray head (5) arranged above the observation window (2); the spray head (5) is arranged on the inner side of the protective door body (1), and the liquid storage tank is connected to the spray head (5) via a liquid pump.

Images