Plug board type window mirror sealing dustproof device and additive manufacturing equipment

Abstract

The utility model discloses an inserting plate type window mirror sealing dustproof device and additive manufacturing equipment, and the inserting plate type window mirror sealing dustproof device comprises an inserting plate assembly which is provided with a window mirror lens and an annular gas cavity channel, and a plurality of gas outlets are formed in the periphery of the inner wall of the gas cavity channel so as to carry out gas blowing protection on the window mirror lens; the insertion plate assembly is inserted into the supporting seat, and a sealing gasket is arranged on the periphery between the insertion plate assembly and the supporting seat; the static pressure driving mechanism is used for fixedly pressing the inserting plate assembly on the supporting seat or loosening the inserting plate assembly from the supporting seat; the gas input end is used for inputting external gas into the gas cavity channel; and the threaded pin is used for locking and fixing the static pressure driving mechanism after the inserting plate assembly is fixedly pressed on the supporting seat or is loosened from the supporting seat. According to the utility model, the reliability of static pressure sealing and the convenience of the plugboard type structure are well combined, so that not only is a good sealing effect realized, but also the plugboard assembly is convenient to disassemble, and the window mirror lens is convenient to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of additive manufacturing, and in particular relates to a plug-in type window mirror sealing and dustproof device and additive manufacturing equipment. Background Art

[0002] Additive manufacturing technology is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast, and rich and diverse material types. Since it is not limited by the complexity of the part shape and does not require any tooling, it has a very wide range of applications. Selective Laser Sintering (SLS) is one of the additive manufacturing technologies that has developed rapidly in recent years. It uses powder materials as raw materials and uses lasers to scan the cross-section of three-dimensional entities layer by layer to complete prototype manufacturing. Its basic working process is: the powder feeding device delivers a certain amount of powder to the working platform surface, the powder spreading device spreads a layer of powder material on the bottom plate of the working cavity or the upper surface of the formed part, and the laser galvanometer system controls the laser to scan the solid part powder layer according to the cross-sectional profile of the layer with an approximately constant spot size and beam energy, so that the powder melts and bonds with the formed part below; when a layer of cross section is sintered, the working platform drops a layer of thickness, and the powder spreading device spreads a layer of uniform and dense powder on it, and scans and sinters a new layer of cross section, and after several layers of scanning and superposition, the entire prototype manufacturing is completed.

[0003] In the optical path design of the above-mentioned additive manufacturing equipment, the safety protection of the optical path channel and the environment are key considerations. It is especially important to separate and protect the working chamber where the powder surface is located and the galvanometer box where the optical equipment is located. This is because when the laser is heating and sintering the powder surface at high temperature, smoke gas will be generated due to high-energy sintering. At the same time, the working chamber will generate dust during the powder spreading and feeding movement and gas flow in the chamber. Once these pollutants enter the galvanometer box, they will pollute and damage the optical lenses, control board circuits, etc. In severe cases, the laser energy is absorbed by the contaminated lenses, which will directly cause damage to the lenses or even fire in the optical path. The tool for separating the working chamber and the galvanometer box optical system is what we often call a window mirror. Its main function is to separate the working chamber and the galvanometer box, and at the same time ensure that the laser will not produce large energy / power attenuation when passing through the window mirror.

[0004] In order to ensure that the laser passes through the optical lens without damage, the current window mirror is generally made of optical glass such as zinc selenide and germanium. The lens is installed on a fixed seat, and the fixed seat is also installed or supplemented with a blowing protection device to prevent or slow down the contamination of the side of the cavity. Since the anti-pollution protection of the window mirror itself is time-limited, it needs to be cleaned regularly to ensure its normal operation. However, there are two contradictions in the window mirror of the prior art. The window mirror that is convenient to remove and clean has a poor sealing effect; while the window mirror with a good sealing effect is inconvenient to assemble and disassemble and maintain. How to take both into account has become a difficulty. Utility Model Content

[0005] In order to solve the above-mentioned technical problems existing in the prior art, the utility model provides a plug-in plate type window mirror sealing and dustproof device and additive manufacturing equipment, which has a simple structure, is easy to maintain, and has a good sealing effect.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a plug-in type window mirror sealing and dustproof device, comprising:

[0007] A plug-in board assembly, on which a window mirror lens is arranged, and below which an annular gas cavity is arranged, wherein the inner wall of the gas cavity is provided with an annular gas outlet or a plurality of gas outlets around the inner wall, and the gas in the gas cavity is discharged through the plurality of gas outlets or the annular gas outlet to perform air blowing protection on the window mirror lens;

[0008] A support seat, on which the plugboard assembly is inserted, and a sealing gasket is provided around the plugboard assembly and the support seat;

[0009] A static pressure driving mechanism, which is arranged on both sides of the support seat to fix and press the plugboard assembly on the support seat, or release it from the support seat;

[0010] A gas input end, which is disposed on one side of the support base and is used to input external gas into the gas cavity; and

[0011] The threaded pin is arranged on the static pressure driving mechanism, and locks and fixes the static pressure driving mechanism after the plug board assembly is fixedly pressed on the supporting seat, or after it is loosened from the supporting seat.

[0012] As a further preferred embodiment of the present invention, grooves are provided on both sides of the plug plate assembly, and the static pressure drive mechanism includes a U-shaped handle, two cross arms, a plurality of rotating shafts and a plurality of cam shafts, and the plurality of rotating shafts are symmetrically and spaced apart and penetrate the two side walls of the support seat, and the cam shaft is provided at one end of the rotating shaft located in the support seat, and the end located outside the support seat is fixedly connected to the cross arm or the U-shaped handle, and the cross arm is fixedly connected to the U-shaped handle, so that when the plug plate assembly is inserted into the support seat, the plurality of cam shafts are located in the groove, and when the U-shaped handle is pressed down, the plurality of cam shafts are driven to rotate and move downward, and at the same time, the plug plate assembly is driven downward to press the sealing gasket to achieve a sealed connection between the plug plate assembly and the support seat.

[0013] As a further preferred solution of the present invention, the U-shaped handle is manually lifted up or pressed down.

[0014] As a further preferred solution of the utility model, the number of the rotating shafts and cam shafts is 6, and they are symmetrically located on both sides of the support seat.

[0015] As a further preferred solution of the utility model, the U-shaped handle is provided with a threaded hole for inserting a threaded pin.

[0016] As a further preferred embodiment of the present invention, both side walls of the support seat are provided with a first insertion hole and a second insertion hole. When the plug-in plate assembly is fixedly pressed on the support seat, the threaded pin is screwed into the threaded hole and the first insertion hole in sequence; when the plug-in plate assembly is loosened from the support seat, the threaded pin is screwed into the threaded hole and the second insertion hole in sequence to lock and fix the static pressure drive mechanism on the support seat.

[0017] As a further preferred embodiment of the present invention, a handle is further provided on the outer wall of one end of the plug board assembly.

[0018] As a further preferred solution of the present invention, the support seat is sealed and connected to the top of the working cavity and the bottom of the galvanometer box through annular sealing gaskets respectively.

[0019] As a further preferred solution of the utility model, the support seat is a hollow structure, so that the laser in the galvanometer box can enter the working cavity through the window mirror lens of the plug-in plate assembly.

[0020] The utility model also provides an additive manufacturing device, comprising any one of the above-mentioned plug-in type window mirror sealing and dustproof devices.

[0021] The plug-in type window mirror sealing and dustproof device and additive manufacturing equipment of the utility model have the following beneficial effects by adopting the above technical scheme:

[0022] 1. The window mirror is sealed and isolated by manually pressing down the static pressure drive mechanism, which effectively solves the problems of unstable sealing performance, difficult insertion and extraction of plug-in components, and inconvenient disassembly of fixed window mirrors caused by assembly sealing and grease sealing.

[0023] 2. The utility model combines the reliability of static pressure sealing and the convenience of the plug-in plate structure very well, which not only achieves a good sealing effect, but also facilitates the disassembly of the plug-in plate assembly, that is, facilitates the cleaning of the window mirror lens.

[0024] 3. After the plug-in plate assembly is fixed and pressed on the support seat, or after the plug-in plate assembly is loosened from the support seat, the static pressure drive mechanism can be locked and fixed on the support seat by screwing the threaded pin into the first insertion hole; or screwing it into the second insertion hole, thereby ensuring the working reliability of the plug-in plate assembly and the static pressure drive mechanism (avoiding the shaking of the plug-in plate assembly and the static pressure drive mechanism from affecting the working of the window mirror lens).

[0025] 4. The overall structure of the utility model is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the plug-in plate type window mirror sealing and dustproof device provided by the utility model;

[0027] Figure 2 for Figure 1 A cross-sectional view of

[0028] Figure 3 This is a structural schematic diagram of the plugboard assembly of the utility model;

[0029] Figure 4 for Figure 3 Bottom view of

[0030] Figure 5 It is a structural schematic diagram of the support seat of the utility model.

[0031] The parts in the figure are marked as follows:

[0032] 1. Support seat, 2. Insert plate assembly, 21. Handle, 22. Groove, 23. Window mirror lens, 24. Gas cavity, 3. Static pressure drive mechanism, 31. U-shaped handle, 32. Cross arm, 33. Rotating shaft, 34. Camshaft, 4. Sealing gasket, 5. Threaded pin, 6. Gas input end. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand and implement the technical solution of the utility model, further detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figure 1-Figure 4As shown, the plug-in type window mirror sealing and dustproof device of the utility model comprises:

[0035] The plug-in board assembly 2 is provided with a window mirror lens 23 on it, and an annular gas cavity 24 is provided thereunder. The inner wall of the gas cavity 24 is provided with a plurality of air outlets, and the gas in the gas cavity 24 is discharged through the plurality of air outlets to perform air blowing protection on the window mirror lens 23; as another embodiment, the inner wall of the gas cavity 24 may be provided with an annular air outlet to allow the gas in the gas cavity 24 to be discharged through the annular air outlet for performing air blowing protection on the window mirror lens 23.

[0036] In a specific implementation, the window mirror lens 23 is circular and embedded in the middle of the protection plate, which is arranged on the plug-in board assembly and located above the gas cavity 24. The middle of the gas cavity 24 is open, and the window mirror lens 23 is located directly above the opening, so that the gas in the gas cavity 24 can be discharged through a plurality of gas outlets to provide air blowing protection for the window mirror lens 23. It should be noted that this structure is the preferred structure of the plug-in board assembly 2, but in a specific implementation, the plug-in board assembly 2 can also be other specific structures, which are not limited in this application.

[0037] A support seat 1, on which the plugboard assembly 2 is inserted, and a sealing gasket 4 is provided around the plugboard assembly 2 and the support seat 1;

[0038] A static pressure driving mechanism 3, which is arranged on both sides of the support base 1 to fix and press the plugboard assembly 2 onto the support base 1, or release it from the support base 1;

[0039] A gas input port 6, which is disposed on one side of the support base 1 and is used to input external gas into the gas cavity 24; and

[0040] The threaded pin 5 is arranged on the static pressure driving mechanism 3 , and is used to lock and fix the static pressure driving mechanism 3 after the plug board assembly 2 is fixedly pressed on the support seat 1 , or after it is released from the support seat 1 .

[0041] In a specific implementation, the support seat 1 is a hollow structure, so that the laser in the galvanometer box can be incident on the working cavity through the window mirror lens 23 of the plug-in board assembly 2 .

[0042] Further reading Figure 2 and Figure 5, grooves 22 are opened on both sides of the plug plate assembly 2, and the static pressure drive mechanism 3 includes a U-shaped handle 31, two cross arms 32, a plurality of rotating shafts 33 and a plurality of cam shafts 34, and the plurality of rotating shafts 33 are symmetrically and spaced through the two side walls of the support seat 1, respectively. The end of the rotating shaft 33 located in the support seat 1 is provided with the cam shaft 34, and the end located outside the support seat 1 is fixedly connected to the cross arm 32 or the U-shaped handle 31, and the cross arm 32 is fixedly connected to the U-shaped handle 31, so that when the plug plate assembly 2 is inserted into the support seat 1, the plurality of cam shafts 34 are located in the groove 22 to support the plug plate assembly 2, and the insertion and withdrawal movement of the plug plate assembly 2 is realized through the cooperation of the plurality of cam shafts 34 and the groove 22.

[0043] When the U-shaped handle 31 is pressed downward, the cam shafts 34 are driven to move downward, and the plugboard assembly 2 is driven to press the sealing gasket 4 downward to achieve a sealed connection between the plugboard assembly 2 and the support seat 1 .

[0044] The U-shaped handle 31 can be lifted or pressed manually, which is easy to operate. Of course, in specific implementation, it can also be lifted or pressed by other automatic methods, such as a manipulator, etc., which is not limited here.

[0045] As an implementation mode, the number of the rotating shafts 33 and the cam shafts 34 are both 6, and they are symmetrically located on both sides of the support base 1. Of course, in a specific implementation, the number of the rotating shafts 33 and the cam shafts 34 can also be reasonably determined according to the size of the plugboard assembly 2 and the support base 1, for example, it can be 4, 6, 8, 2n, etc., which is not limited here.

[0046] In a specific implementation, the U-shaped handle 31 is provided with a threaded hole for inserting the threaded pin 5. The two side walls of the support seat 1 are provided with a first insertion hole and a second insertion hole. When the plug-in plate assembly 2 is fixed and pressed on the support seat 1, the threaded pin 5 is screwed into the threaded hole and the first insertion hole in sequence; when the plug-in plate assembly 2 is loosened from the support seat 1, the threaded pin 5 is screwed into the threaded hole and the second insertion hole in sequence to lock and fix the static pressure drive mechanism 3 on the support seat 1.

[0047] Preferably, in order to facilitate the insertion and extraction of the plugboard assembly 2, a handle 21 is further provided on the outer wall of one end of the plugboard assembly 2.

[0048] In order to better ensure the isolation of the working chamber and the galvanometer box and prevent the smoke gas generated in the working chamber from contaminating the window mirror plate 23, the support seat 1 is sealed and connected to the top of the working chamber and the bottom of the galvanometer box through annular sealing gaskets.

[0049] The installation and working process of the plug-in type window mirror sealing dustproof device of this embodiment are as follows:

[0050] The window mirror lens 23 works by installing and fixing the static pressure drive mechanism 3 and the sealing gasket 4 on the support seat 1, and then connecting the gas input terminal 6 connected thereto with the external gas source, and then sealingly connecting and fixing the support seat 1 to the top of the cavity and the bottom of the galvanometer box with an annular sealing gasket. After the plug-in assembly 2 is assembled, push the U-shaped handle 31 of the static pressure drive mechanism 3 on the support seat 1 to the top, insert the plug-in assembly 2 forward (the window mirror lens 23 is located above the gas cavity 24) into the support seat 1, and after it is pushed into place, push the U-shaped handle 31 of the static pressure drive mechanism 3 downward to the lowest position, and fix the U-shaped handle 31 on the support seat 1 by screwing the threaded pin 5 into the first insertion hole. In this way, the insertion of the plug-in assembly 2 is completed, and normal operation can be carried out after the external gas source is turned on.

[0051] Cleaning of the window mirror lens 23: turn the threaded pin 5 counterclockwise to loosen the U-shaped handle 31, push and pull the U-shaped handle 31 to the top, tighten and fix it with the threaded pin 5, gently pull out the plug board assembly 2, send the plug board assembly 2 to the cleaning station, and professionally clean the window mirror lens. After completion, insert the plug board assembly 2 into the support seat 1 in the previous direction, loosen the threaded pin 5, push the U-shaped handle 31 downward, and lock it with the threaded pin 5 after it is in place to complete a round of cleaning work.

[0052] The utility model also provides an additive manufacturing device, including the plug-in type window mirror sealing and dustproof device described in any of the above embodiments. It should be noted that since the present application mainly protects the above plug-in type window mirror sealing and dustproof device, other existing components included in the additive manufacturing device of the present application, such as a powder spreading device, a working chamber, a galvanometer box, etc., are not specifically described in the present application.

[0053] The above embodiments are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. It should be pointed out that some modifications and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A plug-in type window mirror sealing and dustproof device, characterized in that: include: A plug-in board assembly, on which a window mirror lens is arranged, and below which an annular gas cavity is arranged, wherein the inner wall of the gas cavity is provided with an annular gas outlet or a plurality of gas outlets around the inner wall, and the gas in the gas cavity is discharged through the plurality of gas outlets or the annular gas outlet to perform air blowing protection on the window mirror lens; A support seat, on which the plugboard assembly is inserted, and a sealing gasket is provided around the plugboard assembly and the support seat; A static pressure driving mechanism, which is arranged on both sides of the support seat to fix and press the plugboard assembly on the support seat, or release it from the support seat; A gas input end, which is disposed on one side of the support base and is used to input external gas into the gas cavity; and The threaded pin is arranged on the static pressure driving mechanism, and locks and fixes the static pressure driving mechanism after the plug board assembly is fixedly pressed on the supporting seat, or after it is loosened from the supporting seat.

2. The plug-in type window mirror sealing and dustproof device according to claim 1, characterized in that: Grooves are provided on both sides of the plug plate assembly, and the static pressure driving mechanism includes a U-shaped handle, two cross arms, a plurality of rotating shafts and a plurality of cam shafts, and the plurality of rotating shafts are symmetrically and spaced apart and penetrate the two side walls of the support seat, and the cam shaft is provided at one end of the rotating shaft located in the support seat, and the end located outside the support seat is fixedly connected to the cross arm or the U-shaped handle, and the cross arm is fixedly connected to the U-shaped handle, so that when the plug plate assembly is inserted into the support seat, the plurality of cam shafts are located in the groove, and when the U-shaped handle is pressed down, the plurality of cam shafts are driven to rotate and move downward, and at the same time, the plug plate assembly is driven downward to press the sealing gasket, so as to realize the sealing connection between the plug plate assembly and the support seat.

3. The plug-in type window mirror sealing and dustproof device according to claim 2, characterized in that: The U-shaped handle is manually lifted or pressed down.

4. The plug-in type window mirror sealing and dustproof device according to claim 3, characterized in that: The number of the rotating shafts and cam shafts is 6, and they are symmetrically located on both sides of the support seat.

5. The plug-in type window mirror sealing and dustproof device according to claim 4, characterized in that: The U-shaped handle is provided with a threaded hole for inserting a threaded pin.

6. The plug-in type window mirror sealing and dustproof device according to claim 5, characterized in that: Both side walls of the support seat are provided with a first insertion hole and a second insertion hole. When the plug-in plate assembly is fixedly pressed on the support seat, the threaded pin is screwed into the threaded hole and the first insertion hole in sequence; when the plug-in plate assembly is loosened from the support seat, the threaded pin is screwed into the threaded hole and the second insertion hole in sequence to lock and fix the static pressure drive mechanism on the support seat.

7. The plug-in type window mirror sealing and dustproof device according to claim 1, characterized in that: A handle is also provided on the outer wall of one end of the plug board assembly.

8. The plug-in type window mirror sealing and dustproof device according to claim 1, characterized in that: The support seat is sealed and connected to the top of the working cavity and the bottom of the oscillator box through annular sealing gaskets respectively.

9. The plug-in type window mirror sealing and dustproof device according to any one of claims 1 to 8, characterized in that: The support seat is a hollow structure, so that the laser in the galvanometer box can enter the working cavity through the window mirror lens of the plug-in board assembly.

10. An additive manufacturing device, characterized in that: The invention comprises the plug-in type window mirror sealing and dustproof device as described in any one of claims 1 to 9.

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