Guide rail sliding block mechanism

Abstract

The utility model belongs to the field of additive manufacturing, and relates to a guide rail sliding block mechanism which comprises a guide rail, a sliding block and first powder preventing and removing assemblies fixedly arranged at the two ends of the sliding block. The sliding block is arranged on the guide rail and freely slides in the axial direction of the guide rail. The guide rail sliding block mechanism can reduce the abrasion loss of the guide rail sliding block and improve the forming stability and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing and relates to a guide rail slider mechanism, and more particularly to a guide rail slider mechanism for metal additive manufacturing. Background Technology

[0002] Ultrafine metal powder 3D printing equipment uses guide rail and slider mechanisms in linear reciprocating motion. These mechanisms typically operate in an environment containing metal powder, which easily causes wear on the guide rails and sliders, and in severe cases, slider jamming. To ensure the safety and reliability of the printing process, regular maintenance of the guide rail and slider mechanisms is generally required. Because disassembling and assembling the guide rails is cumbersome, for the sake of simplicity and convenience, usually only the sliders are replaced. This leads to a gradual decrease in the precision of the matching guide rails, and cumulative wear can seriously affect printing accuracy. Furthermore, even with regular slider replacement, abnormal slider feeding during additive manufacturing can still cause guide rail and slider jamming, resulting in printing job termination, scrapped parts, and significant economic losses. Utility Model Content

[0003] In order to solve the above-mentioned technical problems in the background art, the present invention provides a guide rail slider mechanism that can reduce the wear of the guide rail slider and improve the stability and reliability of forming.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A guide rail slider mechanism includes a guide rail and a slider; the slider is disposed on the guide rail and slides freely along the axial direction of the guide rail; characterized in that: the guide rail slider mechanism further includes a first anti-powder cleaning component fixedly disposed at both ends of the slider.

[0006] The aforementioned first anti-powder cleaning component includes a flexible scraper and a flexible scraper fixing seat; the flexible scraper is embedded in the flexible scraper fixing seat; the flexible scraper fixing seat is fixedly disposed at the end of the slider; the flexible scraper is disposed on the guide rail and conforms to the shape of the guide rail.

[0007] The aforementioned flexible scraper is a pre-sealed flexible scraper; the inner ring of the flexible scraper that contacts the guide rail is provided with a spring groove, and a spring is embedded in the spring groove; preferably, the flexible scraper is replaceable.

[0008] A spring groove is provided on the inner wall of the aforementioned flexible scraper fixing seat along the circumference of the flexible scraper fixing seat, and a spring is embedded in the spring groove; the spring compresses the flexible scraper.

[0009] The aforementioned first anti-powder cleaning component also includes a first sealing felt placed between the flexible scraper fixing seat and the guide rail.

[0010] The aforementioned first anti-powder cleaning component also includes a transparent viewing window on the observable guide rail working surface, which is located on the flexible scraper fixing seat.

[0011] The aforementioned first anti-powder and powder-removing component also includes a transparent adhesive attached directly below the transparent viewing window.

[0012] The aforementioned guide rail slider mechanism further includes a second anti-powder cleaning component disposed at the end of the first anti-powder cleaning component; the number of the second anti-powder cleaning components is the same as the number of the first anti-powder cleaning components.

[0013] The aforementioned second anti-powder cleaning component is fixedly mounted at the end of the first anti-powder cleaning component via a connector; the connector is a bolt or a fixing plate; when the connector is a bolt, the second anti-powder cleaning component is fixedly mounted at the end of the first anti-powder cleaning component via the bolt; when the connector is a fixing plate, the plane of the fixing plate is parallel to the axis of the guide rail; the second anti-powder cleaning component, the first anti-powder cleaning component, and the slider are arranged sequentially and fixedly connected to the fixing plate respectively.

[0014] The aforementioned second anti-powder cleaning component includes an end face cover plate, a second sealing felt, and a felt sealing fixing seat; the second sealing felt is embedded in the felt sealing fixing seat; the end face cover plate covers the second sealing felt and is fixedly connected to the felt sealing fixing seat; the felt sealing fixing seat is fixed to the end of the first anti-powder cleaning component; the second sealing felt is placed on the guide rail and conforms to the shape of the contact surface with the guide rail.

[0015] The aforementioned second anti-powder cleaning component also includes a felt pressing block acting on the second sealing felt; the felt sealing fixing seat is provided with a pressing block receiving cavity; the pressing block receiving cavity includes at least one inclined surface or conical surface; the felt pressing block is placed in the pressing block receiving cavity and is wedge-shapedly engaged with the pressing block receiving cavity; the end face cover plate squeezes the second sealing felt through the felt pressing block.

[0016] The advantages of this utility model are:

[0017] This invention provides a guide rail and slider mechanism, including a guide rail and a slider; the slider is mounted on the guide rail and slides freely along the axial direction of the guide rail; furthermore, the guide rail and slider mechanism also includes a first anti-powder cleaning component fixedly mounted at both ends of the slider and conforming to the shape of the guide rail. This invention prevents metal powder from entering between the guide rail and slider through the first anti-powder cleaning component, reducing wear on the guide rail and slider, ensuring smooth operation of the guide rail and slider, extending the service life of the guide rail and slider, and improving the stability and reliability of the metal powder 3D printing equipment. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the guide rail slider mechanism (double slider fixing plate type) provided by this utility model;

[0019] Figure 2 This is a structural schematic diagram of the guide rail slider mechanism (single slider fixing plate type) provided by this utility model;

[0020] Figure 3 This is a structural schematic diagram of the guide rail slider mechanism (double slider side plate fixed type) provided by this utility model;

[0021] Figure 4 This is a structural schematic diagram of the guide rail slider mechanism (single slider side plate fixed type) provided by this utility model;

[0022] Figure 5 This is an exploded structural diagram of the second anti-powder cleaning component used in this utility model;

[0023] Figure 6 This is an exploded structural diagram of the first anti-powder cleaning component used in this utility model;

[0024] in:

[0025] 1-Guide rail; 2-Fixing plate; 3-Second anti-powder cleaning component; 301-End face cover plate; 302-Felt pressing block; 303-Second sealing felt; 304-Felt sealing fixing seat; 4-First anti-powder cleaning component; 401-Flexible scraper; 402-First sealing felt; 403-Flexible scraper fixing seat; 404-Transparent adhesive; 405-Transparent viewing window; 5-Slider; 6-Support seat. Detailed Implementation

[0026] See Figure 1 , Figure 2 , Figure 3 as well as Figure 4 This utility model provides a guide rail slider mechanism, including a guide rail 1 and a slider 5; the slider 5 is disposed on the guide rail 1 and slides freely along the axial direction of the guide rail 1; for example, it may also include a support base 6, which movably mounts the slider 5 on the guide rail 1. Furthermore, the guide rail slider mechanism provided by this utility model also includes a first anti-powder cleaning component 4 fixedly disposed at both ends of the slider 5 and conforming to the shape of the guide rail 1. The first anti-powder cleaning component 4 can clean the 3D printing metal powder between the guide rail 1 and the slider 5, preventing powder from entering the guide rail slider and ensuring smooth operation of the guide rail 1 and the slider 5.

[0027] See Figure 6The first anti-powder cleaning component 4 used in this utility model includes a flexible scraper 401 and a flexible scraper fixing seat 403. The flexible scraper 401 is embedded in the flexible scraper fixing seat 403. The flexible scraper fixing seat 403 is fixedly disposed at the end of the slider 5. The flexible scraper 401 is disposed on the guide rail 1 and conforms to the shape of the guide rail 1. The flexible scraper 401 is a plug-sealed flexible scraper. For example, the inner ring of the flexible scraper 401 in contact with the guide rail has a certain interference fit to ensure that the flexible scraper 401 is in tighter contact with the guide rail 1, and the effect of preventing powder from entering the guide rail slider is more obvious. For example, the flexible scraper 401 can be a rubber scraper.

[0028] For example, the first anti-powder cleaning component 4 provided by this utility model may further include a scraper bracket; the flexible scraper 401 is embedded in the flexible scraper fixing seat 403 through the scraper bracket, or the flexible scraper 401 is directly embedded in the flexible scraper fixing seat 403. In order to increase the interference fit between the inner ring of the flexible scraper 401 and the guide rail, that is, to ensure that the flexible scraper 401 and the guide rail 1 are in a tighter contact, this utility model provides a spring groove in the inner ring of the scraper bracket or in the inner ring of the flexible scraper fixing seat 403, especially in the circumferential direction of the inner ring. A spring is embedded in the spring groove. By the spring pressing the flexible scraper 401, the inner ring of the flexible scraper 401 is deformed and pressed against the contact surface of the guide rail. Preferably, a first sealing felt 402 is also provided between the flexible scraper fixing seat 403 and the guide rail 1. To observe the working surface of the guide rail 1, specifically whether metal powder exists between the guide rail 1 and the slider 5, this invention innovatively incorporates a transparent viewing window 405 on the flexible scraper mounting base 403 to observe the working surface of the guide rail 1, allowing real-time monitoring of the anti-powder cleaning effect. Simultaneously, a transparent adhesive 404 is attached directly below the transparent viewing window 405 to adhere any powder that falls between the guide rail 1 and the slider 5. For example, the transparent adhesive 404 can be double-sided tape or self-adhesive. Generally, the area of ​​the transparent adhesive 404 is not smaller than the area of ​​the transparent viewing window 405. When metal powder is adhered to the transparent adhesive 404, the amount of adhered powder can be used to determine whether the first sealing felt 402 and the flexible scraper 401 need to be replaced. It should be noted that the flexible scraper 401, the first sealing felt 402, and the transparent adhesive 404 included in the first anti-powder cleaning component 4 are all replaceable or replaceable consumables.

[0029] The guide rail slider mechanism also includes a second anti-powder cleaning component 3 disposed at the end of the first anti-powder cleaning component 4; the number of the second anti-powder cleaning components 3 is the same as the number of the first anti-powder cleaning components 4.

[0030] See Figure 5For example, the second anti-powder cleaning component 3 used in this utility model includes an end cover plate 301, a second sealing felt 303, and a felt sealing fixing seat 304; the second sealing felt 303 is embedded in the felt sealing fixing seat 304; the end cover plate 301 covers the second sealing felt 303 and is fixedly connected to the felt sealing fixing seat 304; the felt sealing fixing seat 304 is fixed to the end of the first anti-powder cleaning component 4; the second sealing felt 303 is placed on the guide rail 1 and conforms to the contact surface of the guide rail 1, so that it can closely fit the contact surface of the guide rail. It should be noted that the second sealing felt 303 is a replaceable consumable.

[0031] In order to stably and continuously press the felt block 302 onto the guide rail 1, the second anti-powder cleaning component 3 of this utility model also includes a felt block 302 acting on the second sealing felt 303; the felt sealing fixing seat 304 is provided with a block receiving cavity; the block receiving cavity includes at least one inclined surface or conical surface; the felt block 302 is placed in the block receiving cavity and is wedge-shapedly engaged with the block receiving cavity; the end face cover plate 301 is fixed to the felt sealing fixing seat 304 with screws. At this time, the end face cover plate 301 squeezes the second sealing felt 303 through the felt block 302, that is, the pushed felt block 302 slides on the inclined surface or conical surface in the block receiving cavity of the felt sealing fixing seat 304 to press the felt. In addition to the aforementioned wedge fit, the felt block 302 can also be pressed onto the second sealing felt 303 by means of a spring, so that the second sealing felt 303 conforms to the shape of the contact surface with the guide rail 1 and is pressed tightly onto the contact surface of the guide rail.

[0032] For example, the second anti-powder cleaning component 3 is fixedly mounted at the end of the first anti-powder cleaning component 4 via a connector; the connector is a bolt or a fixing plate 2; when the connector is a bolt, the second anti-powder cleaning component 3 is fixedly mounted at the end of the first anti-powder cleaning component 4 via the bolt. When the connector is a fixing plate 2, see [reference needed]. Figure 1 as well as Figure 2 The plane of the fixed plate 2 is parallel to the axis of the guide rail 1; the second anti-powder cleaning component 3, the first anti-powder cleaning component 4, and the slider 5 are sequentially arranged and fixedly connected to the fixed plate 2. Figure 1 Taking the structure shown as an example, a fixing plate 2 can be placed on the slider 5. Since the fixing plate 2 has a notch for installing the support base 6, the support base 6 can be installed after the fixing plate 2 is installed, thus fixing the guide rail slider mechanism provided by this utility model into an integrated structure; or... Figure 2 Taking the structure shown as an example, the installation method can be to first place the support base 6 on the slider 5, and then place the fixing plate 2. It should be noted that... Figure 2 The installation method shown requires less disassembly work when replacing the felt and flexible scraper inside the anti-powder cleaning device. Of course, to further simplify the installation process, see [link to relevant documentation]. Figure 3 as well as Figure 4 That is, the fixing plate 2 is omitted, and the second anti-powder cleaning component 3 and the first anti-powder cleaning component 4 are directly fixed to the end of the slider 5. This method is simpler to install, but it requires the slider to be customized or modified. For example, corresponding connection holes are opened at both ends of the slider.

[0033] For example, slider 5 can be a single slider or a double slider structure. See [link / reference] Figure 1 It employs a dual-slider structure, with a second anti-powder cleaning component 3 and a first anti-powder cleaning component 4 respectively located at both ends of the structure, serving to prevent powder from entering the guide rail slider. See also Figure 2 This structure is similar to Figure 1 The difference from the structure shown is that it uses a single slider structure, and other components or structures are the same. Figure 1 There is no difference, but whether it is a single slider structure or a double slider structure, the second anti-powder cleaning component 3 and the first anti-powder cleaning component 4 can effectively prevent and clean the ultrafine powders commonly used in metal 3D printing (such as 0-20μm, 10-30μm, 20-40μm, 30-50μm), which can prevent powder from entering the guide rail slider and ensure the smooth operation of the guide rail 1 and slider 5.

Claims

1. A guide rail slider mechanism, comprising a guide rail (1) and a slider (5); the slider (5) is disposed on the guide rail (1) and slides freely along the axial direction of the guide rail (1); characterized in that: The guide rail slider mechanism also includes a first anti-powder cleaning component (4) fixedly disposed at both ends of the slider (5); The first anti-powder cleaning component (4) includes a flexible scraper (401) and a flexible scraper fixing seat (403); the flexible scraper (401) is embedded in the flexible scraper fixing seat (403); the flexible scraper fixing seat (403) is fixedly disposed at the end of the slider (5); the flexible scraper (401) is disposed on the guide rail (1) and conforms to the shape of the guide rail (1).

2. The guide rail slider mechanism according to claim 1, characterized in that: The flexible scraper (401) is a sealing type flexible scraper; the inner ring of the flexible scraper (401) that contacts the guide rail (1) is provided with a spring groove, and a spring is embedded in the spring groove.

3. The guide rail slider mechanism according to claim 2, characterized in that: The flexible scraper (401) is replaceable.

4. The guide rail slider mechanism according to claim 3, characterized in that: The first anti-powder cleaning component (4) also includes a transparent viewing window (405) on the working surface of the observable guide rail (1) on the flexible scraper fixing seat (403).

5. The guide rail slider mechanism according to claim 4, characterized in that: The first anti-powder cleaning component (4) also includes a transparent adhesive (404) attached directly below the transparent viewing window (405).

6. The guide rail slider mechanism according to claim 5, characterized in that: The first anti-powder cleaning component (4) also includes a first sealing felt (402) placed between the flexible scraper fixing seat (403) and the guide rail (1).

7. The guide rail slider mechanism according to any one of claims 1-6, characterized in that: The guide rail slider mechanism further includes a second anti-powder cleaning component (3) fixedly disposed at the end of the first anti-powder cleaning component (4); the number of the second anti-powder cleaning components (3) is the same as the number of the first anti-powder cleaning components (4).

8. The guide rail slider mechanism according to claim 7, characterized in that: The second anti-powder cleaning component (3) is fixedly installed at the end of the first anti-powder cleaning component (4) by means of a connector; the connector is a bolt or a fixing plate (2); when the connector is a bolt, the second anti-powder cleaning component (3) is fixedly installed at the end of the first anti-powder cleaning component (4) by means of a bolt; when the connector is a fixing plate (2), the plane of the fixing plate (2) is parallel to the axis of the guide rail (1); the second anti-powder cleaning component (3), the first anti-powder cleaning component (4) and the slider (5) are arranged in sequence and fixedly connected to the fixing plate (2) respectively.

9. The guide rail slider mechanism according to claim 8, characterized in that: The second anti-powder cleaning component (3) includes an end face cover plate (301), a second sealing felt (303), and a felt sealing fixing seat (304); the second sealing felt (303) is embedded in the felt sealing fixing seat (304); the end face cover plate (301) covers the second sealing felt (303) and is fixedly connected to the felt sealing fixing seat (304); the felt sealing fixing seat (304) is fixed at the end of the first anti-powder cleaning component (4); the second sealing felt (303) is placed on the guide rail (1) and conforms to the contact surface of the guide rail (1).

10. The guide rail slider mechanism according to claim 9, characterized in that: The second anti-powder cleaning component (3) also includes a felt block (302) acting on the second sealing felt (303); the felt sealing fixing seat (304) is provided with a block receiving cavity; the block receiving cavity includes at least one inclined surface or conical surface; the felt block (302) is placed in the block receiving cavity and is wedge-shapedly engaged with the block receiving cavity; the end cover plate (301) squeezes the second sealing felt (303) through the felt block (302).

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