Protective door structure applied to numerical control machine tool

Abstract

The protective door structure applied to the numerical control machine tool comprises 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 which are arranged in a spaced mode, the outer edge of the outer L-shaped plate and the outer edge of the inner L-shaped plate are each provided with a side wall vertically extending outwards, and the outer edge of the outer L-shaped plate and the outer edge of the inner L-shaped plate are each provided with a side wall. The inner L-shaped plate can be embedded in the outer L-shaped plate, the outer L-shaped plate and the inner L-shaped plate are both manufactured through a bending technology, and the inner side and the outer side of the protective door body are both planes. The protective door body is composed of the outer L-shaped plate and the inner L-shaped plate which are manufactured through the bending process, so that the flatness of the inner side and the outer side of the protective door body is improved, the cleaning difficulty of the scraper module is remarkably reduced, and the protective door body formed by nesting the outer L-shaped plate and the inner L-shaped plate is adopted, so that the overall structural strength is improved, and the service life of the protective door body is prolonged. And the production process difficulty is remarkably reduced, and the manufacturing and production cost of the protective door is greatly reduced.

Description

Technical Field

[0001] The 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] Numerical Control Machine Tool (NC Machine Tool) is a machine tool that uses computer numerical control technology for processing. It controls the movement and processing of the machine tool in a programmed way to achieve high-precision and 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 the abbreviation of digital control machine tools. They are automated machine tools equipped with a program control system. They can make the machine tool move and process parts according to the programmed program. They integrate the latest technologies such as machinery, automation, computers, measurement, and microelectronics. The basic components include processing program carriers, numerical control devices, servo drive devices, machine tool bodies, and other auxiliary devices. CNC machine tools solve the problems of complex, precise, small batch, and multi-variety parts processing. They are flexible and high-efficiency automated machine tools, representing the development direction of modern machine tool control technology, and are 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 running.

[0003] A Chinese invention patent publication number CN118990115A discloses a protective door for CNC machine tools, the technical solution of which is as follows: it includes a shell, a groove A is provided in the middle of the shell, an opening and closing mechanism is fixedly installed on the front of the 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; by means of the cleaning mechanism arranged in combination with the above structure, when the CNC machine tool is being processed, debris will fall from the 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, and during each opening and closing process of the opening and closing mechanism, the cleaning mechanism will clean the inside of the protective door to achieve a linkage effect, thereby ensuring the normal use of the CNC machine tool and increasing 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 easily accumulates debris 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, although a brush is used as a cleaning mechanism, it can sweep away some debris, but it 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 numerically controlled 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 applied to a CNC machine tool, comprising a protective door body slidably mounted on the CNC machine tool, the protective door body being provided with an observation window, 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, 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 planes.

[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 matched with the circular track through a ball slider.

[0010] Furthermore, a positioning plane for abutting and matching with the ball slider is provided at one end of the circular track away from the fixing bracket, and positioning protrusions for fitting and matching 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 limit sliding grooves, and the scraper module is slidably mounted on the limit 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 inclined 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, thereby greatly reducing the manufacturing cost of the protective door. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first use 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 It is a schematic diagram of the explosion of the protective door body in the present invention;

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

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

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

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

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

[0027] Fig.10 This is an exploded schematic diagram of the cleaning mechanism in the second embodiment;

[0028] Fig.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 in conjunction with the accompanying drawings and specific embodiments.

[0031] Embodiment 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 through 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 plate is 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 of the protective door body 1. Therefore, when the protective door body 1 is opened and closed, the scraper module 4 can synchronously scrape off the debris and coolant adhering to the inner side 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, the present 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 the working noise, and at the same time can significantly reduce the overflow of the atomized coolant, thereby improving the working environment of the CNC operation, reducing the pollution of the noise and coolant to the operator, and ensuring the occupational health of the operator.

[0035] like Figure 3 As shown, the scraper module 4 in this embodiment 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 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 of 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. Each 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 presence of debris residue in the observation window 2.

[0037] Furthermore, in order to reduce the coolant residue at the observation window 2, the present embodiment is provided with 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 inside 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, and the spray head 5 will spray the detergent evenly on the observation window 2, so as to clean the coolant residue at the observation window 2 with the detergent. The above-mentioned spray head 5 is usually arranged 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 pass the detergent through the entire observation window 2 to improve 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 application, the operator can control the working time of the liquid pump through the control switch according to the degree of contamination of the observation window 2, so as to spray a suitable amount of detergent on the observation window 2 through the spray head 5, thereby reducing resource waste. A feed port connected to a liquid storage tank is provided on the outside of the protective door body 1, so that the operator can 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 that are spaced apart, 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. Figure 5-6As shown, in this embodiment, the lower end of the protective door body 1 is connected to the CNC machine tool 10 by a pulley assembly 6. The 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 by a ball guide rail assembly 7 with higher displacement accuracy and smoother movement, thereby reducing the resistance of the protective door body 1 to movement and improving the user experience. In this embodiment, the upper and lower ends of the protective door body 1 respectively use pulleys and sliders, which greatly reduces the difficulty of maintenance while ensuring the stability and smoothness of the movement of the protective door body 1.

[0042] During the operation of the CNC machine tool 10, the guide rail assembly 7 installed at the upper end of the protective door body 1 can be effectively protected by the protective door body 1, and debris is generally difficult 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 corresponding to the position of the pulley assembly 6. The protective plate 8 can also effectively prevent 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 is slidingly matched with the circular track 702 through a ball slider 705, and 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, so as to prevent the ball slider 705 from tilting and deviating on the circular track 702, and positioning protrusions 704 for interlocking with the circular track 702 are provided at both ends of the fixed bracket 701, so as 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 between the rotating pulley 602 and 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 cleaning and maintenance difficulty of the slide rail 601.

[0045] Embodiment 2:

[0046] like Figure 9-11 As shown, the difference between this embodiment and the first embodiment is that the fixed frame 3 is parallel to the sliding direction of the protective door body 1. This arrangement can arrange the scraper module 4 more reasonably. The scraper module 4 in this embodiment 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 module 4 is provided with a plurality of scraper modules 4, 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, and the two scraper modules 4 arranged in sections up and down can effectively scrape away debris, and the stacking end to end manner can fully connect the debris (or cleaning agent or coolant) discharged downward, effectively avoiding the residue of debris (or cleaning agent or coolant).

[0048] Furthermore, limiting grooves 302 are symmetrically arranged 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 embedded 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 the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are 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 applied to a numerically controlled machine tool (10), comprising a protective door body (1) slidably mounted on the numerically controlled machine tool (10), wherein the protective door body (1) is provided with an observation window (2), 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) which are 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.

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

3. A protective door structure for a CNC machine tool (10) 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. A protective door structure for a CNC machine tool (10) according to claim 3, characterized in that: A positioning plane (703) for abutting and matching with the ball slider (705) is provided at one end of the circular track (702) away from the fixed bracket (701), and positioning protrusions (704) for fitting with the circular track (702) are provided at both ends of the fixed bracket (701).

5. A protective door structure for a CNC machine tool (10) 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 load-bearing bracket; a discharge port (9) is formed at the end of the slide rail (601) and the end of the load-bearing bracket; the rotating pulley (602) can roll along the slide rail (601); and the outer circumference of the rotating pulley (602) is provided with a groove (603) for fitting with the slide rail (601).

6. A protective door structure for a CNC machine tool (10) according to claim 1, characterized in that: Limiting slide grooves (302) are symmetrically arranged 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 (10) according to claim 1 or 6, characterized in that: It also comprises 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.

8. A protective door structure for a CNC machine tool (10) according to claim 7, characterized in that: The fixed frame (3) is arranged parallel to or perpendicular to the sliding direction of the protective door body (1).

9. A protective door structure for a CNC machine tool (10) according to claim 8, characterized in that: 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) is arranged through the middle of the scraper body (401); and the scraping portion (403) is composed of a plurality of arc protrusions (404) arranged side by side.

10. A protective door structure for a CNC machine tool (10) according to claim 8 or 9, characterized in that: 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 end to end in sequence from top to bottom.

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