A powder vacuum coating device

Abstract

The present invention relates to the technical field of powder modification equipment, and in particular to a powder vacuum coating device. The powder vacuum coating device of the present invention comprises: a vacuum chamber; a coating source, which is arranged in the vacuum chamber; a powder tray, which is used to load the powder to be coated and is arranged in the vacuum chamber, and a turning mechanism is arranged between the powder tray and the vacuum chamber. The coating source of the present invention produces modified particles, and the modified particles interact with the powder particles of the powder tray and cover the surface of the powder particles, so as to achieve surface modification of the powder particles. The turning mechanism can adjust the relative height of the two ends of the powder tray, so that the powder particles in the powder tray roll under the action of their own weight, thereby increasing the shearing effect between the modified particles and the powder particles, promoting the combination between the improved particles and the powder particles, and making the combination more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of powder modification equipment, and in particular to a powder vacuum coating device. Background Art

[0002] Powder materials usually exist in the form of particles or powders, and can be used as essential basic raw materials in processes such as powder metallurgy and 3D printing. Powder materials can also be treated by vacuum coating to improve their surface hardness, corrosion resistance and optical properties, and their application range will surely be further expanded.

[0003] When using powder materials, usually two or more powder materials are mixed. The uniform mixing of powder materials is one of the key technologies in all powder material forming fields such as injection molding, 3D printing, powder metallurgy, etc. The conventional powder mixing methods include: mechanical or ultrasonic stirring, ball milling, rolling, spray drying, air flow milling, and directly introducing different raw materials to achieve mixed powder preparation.

[0004] When mixing powders by conventional methods, there are shortcomings such as uneven mixing, the distribution of powders of different materials or particle sizes in the mixture cannot be accurately controlled, powder raw materials may be damaged during the mixing process, impurities may be present during the mixing process, and the mixed powders may have poor bonding strength after mixing.

[0005] In view of this, it is necessary to provide a powder vacuum coating device to solve the above-mentioned shortcomings. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a powder vacuum coating device. The present invention sets a material turning mechanism between the powder disk and the vacuum chamber. When working, the coating source generates modified particles, and the modified particles interact with the powder particles in the powder disk and cover the surface of the powder particles, so as to achieve surface modification of the powder particles. The material turning mechanism can adjust the relative height of the two ends of the powder disk, so that the powder particles in the powder disk roll under the action of their own weight, thereby increasing the shearing effect between the modified particles and the modified particles, promoting the combination between the improved particles and the powder particles, and making the combination more uniform.

[0007] The purpose of the present invention is to provide a powder vacuum coating device.

[0008] A powder vacuum coating device provided according to a specific embodiment of the present invention includes:

[0009] Vacuum chamber;

[0010] A coating source is arranged in the vacuum chamber;

[0011] A powder tray, used for loading powder to be coated, is arranged in the vacuum chamber;

[0012] The material turning mechanism is arranged at the bottom of the vacuum chamber, and the material turning mechanism is drivingly connected with the powder disk to drive the powder to roll and coat in the powder disk.

[0013] According to the powder vacuum coating device provided in a specific embodiment of the present invention, the material turning mechanism includes two groups of height adjustment components, and the two groups of height adjustment components are relatively arranged at two ends of the powder disk, and each of the height adjustment components is transmission-connected to the end of the powder disk for adjusting the relative height of the two ends of the powder disk.

[0014] According to the powder vacuum coating device provided by the specific embodiment of the present invention, each of the height adjustment components includes:

[0015] A screw rod, the screw rod is arranged vertically;

[0016] A transmission member, the transmission member being threadedly connected to the lead screw;

[0017] A telescopic member, one end of which is fixedly connected to the end of the powder disk, and the other end of which is hinged to the transmission member.

[0018] According to the powder vacuum coating device provided in a specific embodiment of the present invention, the turning mechanism also includes a rotating disk and an internal gear. The lower end of each of the screw rods is rotatably connected to the rotating disk. The internal gear is fixed in the vacuum chamber. The lower end of each of the screw rods is also provided with a planetary gear, and the internal gear is meshingly connected with the planetary gears.

[0019] According to the powder vacuum coating device provided in a specific embodiment of the present invention, the rotating disk is provided with a rotating shaft, and the top end of the rotating shaft is fixedly connected to the rotating disk.

[0020] According to the powder vacuum coating device provided in a specific embodiment of the present invention, a driving motor is provided at one end of the rotating shaft away from the rotating disk, and an output end of the driving motor is drivingly connected to the rotating shaft.

[0021] According to the powder vacuum coating device provided in a specific embodiment of the present invention, each of the screw rods is provided with an external thread, and the external threads of the two screw rods have opposite spiral directions.

[0022] According to the powder vacuum coating device provided in a specific embodiment of the present invention, the telescopic part includes a pivot part and a plurality of guide sleeves, the pivot part is rotatably connected to the transmission part, a sliding rod is arranged on the pivot part corresponding to the guide sleeve, the plurality of guide sleeves are fixed to the end of the powder disk, and one end of the sliding rod extends into the guide sleeve and is slidably connected to the guide sleeve.

[0023] According to the powder vacuum coating device provided in a specific embodiment of the present invention, the coating source is any one of a magnetron sputtering coating source and an arc ion coating source, or a combination of the two.

[0024] According to the powder vacuum coating device provided in a specific embodiment of the present invention, the powder tray is rectangular, and a receiving groove for receiving the powder to be coated is provided on the powder tray.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention sets a turning mechanism between the powder disk and the vacuum chamber. When working, the coating source generates modified particles. The modified particles interact with the powder particles in the powder disk and cover the surface of the powder particles, so as to achieve surface modification of the powder particles. The turning mechanism can adjust the relative height of the two ends of the powder disk, so that the powder particles in the powder disk roll under the action of their own weight, thereby increasing the shearing effect between the modified particles and the modified particles, promoting the combination between the improved particles and the powder particles, and making the combination more uniform.

[0027] 2. The present invention is provided with a height adjustment component, which is drivingly connected to the end of the powder disk, so that the powder in the powder disk can roll back and forth between the two ends of the powder disk, thereby making the combination of the powder particles and the modified particles more complete and uniform.

[0028] 3. The present invention is provided with a rotating disk and an internal gear, wherein the rotation of the rotating disk can drive the powder disk to rotate relative to the coating source, and the powder orientation of the powder disk can be adjusted to promote the full combination of powder particles and improved particles; the internal gear is meshed with the planetary gear, and during the rotation of the rotating disk, the screw can be driven to rotate, and then the position of the transmission part relative to the screw can be adjusted, thereby adjusting the relative height of the two ends of the powder disk.

[0029] 4. The rotating disk of the present invention is connected to the driving motor through a rotating shaft. The driving motor provides power for the rotation of the rotating disk. At the same time, since the transmission member needs to move upward or downward on the screw, the rotation direction of the screw is required to be opposite. Therefore, it is only necessary to drive the motor to drive the rotating shaft to rotate forward for a certain period, and then reversely rotate the rotating shaft for a certain period to achieve reciprocating downward displacement of both ends of the powder disk, so that the powder is displaced from one end of the powder disk to the other end, and thus reciprocates periodically.

[0030] 5. The telescopic member of the present invention can adapt to the change in the distance between the two transmission members during the displacement process, thereby ensuring greater stability when adjusting the relative height of the two ends of the powder disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a powder vacuum coating device provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a powder tray provided in an embodiment of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Vacuum chamber; 2. Coating source; 3. Powder plate; 4. Turning mechanism; 41. Height adjustment assembly; 411. Screw rod; 412. Transmission member; 413. Telescopic member; 4131. Pivot member; 4132. Guide sleeve; 4133. Sliding rod; 42. Internal gear; 43. Planetary gear; 44. Rotating plate; 45. Rotating shaft; 46. Driving motor. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] Example

[0037] Based on the attached Figure 1-2 The present invention provides a powder vacuum coating device, comprising:

[0038] Vacuum chamber 1;

[0039] A coating source 2 is disposed in the vacuum chamber 1;

[0040] A powder tray 3 is used to load powder to be coated and is arranged in the vacuum chamber 1;

[0041] The material turning mechanism 4 is arranged at the bottom of the vacuum chamber 1 , and the material turning mechanism 4 is transmission-connected with the powder plate 3 , and is used for driving the powder to roll and coat in the powder plate 3 .

[0042] It should be noted that the coating source 2 is disposed on the side wall of the vacuum chamber 1 , and the coating source 2 can generate modified particles, which are combined with the powder particles in the powder disk 3 to achieve surface modification of the powder particles.

[0043] Preferably, the turning mechanism 4 includes two groups of height adjustment components 41, which are relatively arranged at the two ends of the powder disk 3, and each of the height adjustment components 41 is transmission-connected to the end of the powder disk 3 for adjusting the relative height of the two ends of the powder disk 3.

[0044] Preferably, each height adjustment assembly 41 comprises:

[0045] The screw rod 411 is vertically arranged;

[0046] A transmission member 412, the transmission member 412 is threadedly connected to the screw rod 411;

[0047] The telescopic member 413 has one end fixedly connected to the end of the powder plate 3 , and the other end of the telescopic member 413 is hinged to the transmission member 412 .

[0048] It should be noted that a threaded hole is provided on the transmission member 412, and the screw rod 411 passes through the threaded hole, and the screw rod 411 is threadedly connected to the threaded hole. Since the height adjustment components 41 are provided at both ends of the powder disk 3, the transmission member 412 does not rotate during the rotation of the screw rod 411, so that the transmission member 412 is displaced upward or downward by utilizing the threaded transmission characteristics of the screw rod 411, which is determined according to the spiral direction of the external thread of the screw rod 411 and the rotation direction of the screw rod 411; in order to prevent the transmission member 412 from slipping on the screw rod 411, an upper limit portion and a lower limit portion can be provided on the screw rod 411, and the upper limit portion limits the height of the upward displacement of the transmission member 412, and the lower limit portion limits the low range of the downward displacement of the transmission member 412. The transmission member 412 is on the screw rod 411 between the upper limit portion and the lower phase portion. , and move back and forth downward; due to the upward or downward displacement of the transmission member 412, after the external thread spiral direction of the screw rod 411 is determined, it is only necessary to control the rotation direction of the screw rod 411 to determine it. Without setting the rotating disk 44, the bottom end of the screw rod 411 is rotatably connected to the bottom of the vacuum chamber 1, and a screw motor is provided. The output end of the screw motor is transmission-connected to the screw rod 411 to drive the screw rod 411 to rotate. Of course, the screw motor has the function of driving the screw rod 411 to rotate forward and reverse, and the screw motor is preferably a servo motor; of course, due to the provision of the screw motor, the position of the screw rod 411 is locked. During operation, only the effect of adjusting the relative height of the left and right ends of the transmission powder disk 3 can be achieved. The powder particles in the powder disk 3 will only appear to be facing the left or right side, and the effect of combining with the modified particles of the coating source 2 is limited.

[0049] Preferably, the turning mechanism 4 also includes a rotating disk 44 and an internal gear 42. The lower end of each screw rod 411 is rotatably connected to the rotating disk 44. The internal gear 42 is fixed in the vacuum chamber 1. The lower end of each screw rod 411 is also provided with a planetary gear 43. The internal gear 42 is meshingly connected with the planetary gear 43 for transmission.

[0050] It should be noted that the use of the rotating disk 44 allows the powder disk 3 to be not limited to changes in the relative heights of the two ends, and the powder particles in the powder disk 3 can also rotate in a 360° manner, which is suitable for the case where the coating source 2 is circumferentially arranged on the inner wall of the vacuum chamber 1, and can make the powder particles in the powder disk 3 fully contact with the modified particles of the coating source 2; by using the cooperation of the internal gear 42 and the planetary gear 43, the aforementioned screw motor can be discarded.

[0051] Preferably, the rotating disk 44 is provided with a rotating shaft 45 , and the top end of the rotating shaft 45 is fixedly connected to the rotating disk 44 .

[0052] It should be noted that the rotating shaft 45 is rotatably disposed at the bottom of the vacuum chamber 1 . In order to ensure the vacuum degree of the vacuum chamber 1 , a rotation seal is formed between the rotating shaft 45 and the vacuum chamber 1 .

[0053] Preferably, a driving motor 46 is provided at one end of the rotating shaft 45 away from the rotating disk 44 , and an output end of the driving motor 46 is drivingly connected to the rotating shaft 45 .

[0054] It should be noted that the drive motor 46 is fixed at the bottom of the vacuum chamber 1, and its output end is connected to the rotating shaft 45. In order to ensure that the transmission member 412 reciprocates up and down the screw rod 411, the drive motor 46 is required to drive the rotating disk 44 to rotate forward and reverse. Of course, the drive motor 46 is preferably a servo motor.

[0055] Preferably, each screw rod 411 is provided with an external thread, and the external threads of the two screw rods 411 have opposite spiral directions; in this embodiment, the thread pitch of the external threads on the screw rods 411 is 2 mm, and the speed of the screw rods 411 is controlled to be 100 rpm in both forward and reverse rotation by adjusting the speed of the rotating disk 44. Since the inner diameter of the internal gear 42 is much larger than the outer diameter of the planetary gear 43, the speed of the rotating disk 44 is lower than 100 rpm, and the powder particles are subjected to less centrifugal force during the rolling process from the high point to the low point of the powder disk 3; and since the external threads of the two screw rods 411 have opposite spiral directions, when the rotating disk 44 rotates forward, the rotation speed of the screw rods 411 is 100 rpm. During the process, the planetary gears 43 at the bottom ends of the two screw rods 411 rotate in the same direction, but because the external screw threads of the two screw rods 411 are in opposite directions, one of the two transmission members 412 is displaced upward and the other transmission member 412 is displaced downward, thereby adjusting the relative heights of the two ends of the powder disk 3. Of course, when the rotating disk 44 rotates in the opposite direction, the displacement directions of the two transmission members 412 are switched. Therefore, the transmission member 412 on the left side of the powder disk 3 is at the highest position of the screw rod 411, and the transmission member 412 on the right side is at the lowest position of the screw rod 411. Within one cycle, the drive motor 46 needs to rotate a certain number of times in the forward direction and the same number of times in the reverse direction.

[0056] Preferably, the telescopic member 413 includes a pivot member 4131 and a plurality of guide sleeves 4132. The pivot member 4131 is rotatably connected to the transmission member 412. A sliding rod 4133 is provided on the pivot member 4131 corresponding to the guide sleeve 4132. The plurality of guide sleeves 4132 are fixed to the end of the powder disk 3. One end of the sliding rod 4133 extends into the guide sleeve 4132 and is slidably connected to the guide sleeve 4132.

[0057] The cam 4133 is provided with a plurality of guide sleeves 4132 and a plurality of slide rods 4133, and the plurality of guide sleeves 4132 are provided with a plurality of slide rods 4133. The plurality of guide sleeves 4132 are provided with a plurality of slide rods 4133, and the plurality of slide rods 4133 are provided with a plurality of slide rods 4133. The plurality of slide rods 4133 are provided with a plurality of slide rods 4133, and the plurality of slide rods 4133 are provided with a plurality of slide rods 4133.

[0058] Preferably, the coating source 2 is any one of a magnetron sputtering coating source 2 and an arc ion coating source 2 or a combination of the two.

[0059] Preferably, the powder tray 3 is rectangular, and is provided with a receiving groove for receiving the powder to be coated.

[0060] The working principle of the powder vacuum coating device of the present invention is as follows: the driving motor 46 drives the rotating disk 44 to rotate through the rotating shaft 45, and the planetary gear 43 rolls along the internal gear 42 under the rotation of the rotating disk 44, and its rolling action drives the screw rod 411 to rotate. Since the rotation directions of the two screw rods 411 are opposite, the two transmission members 412 are respectively displaced upward and downward, thereby causing the powder disk 3 to tilt, and its tilting action will cause the powder particles to roll to a lower place under the action of their own weight, and combine with the modified particles of the coating source 2 during the rolling process, thereby achieving modification and coating; when the powder particles gather to the lowest point, the driving motor 46 rotates in the opposite direction, thereby raising the powder particles, and the powder particles continue to roll to the lowest point after reaching a high point; the rotation of the rotating disk 44 drives the opening of the receiving slot of the powder disk 3 to make a circular motion toward the coating source 2, so that the powder particles and the modified particles can be more fully combined, greatly improving the coating modification effect.

[0061] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder vacuum coating device, characterized in that: include: Vacuum chamber (1); A coating source (2) is arranged in the vacuum chamber (1); the coating source (2) is any one of a magnetron sputtering coating source (2) and an arc ion coating source (2), or a combination of the two; A powder plate (3), used for loading powder to be coated, and arranged in the vacuum chamber (1); A material turning mechanism (4), the material turning mechanism (4) being arranged at the bottom of the vacuum chamber (1), the material turning mechanism (4) being in driving connection with the powder plate (3) and being used for driving the powder to turn over and be coated in the powder plate (3); The material turning mechanism (4) comprises two groups of height adjustment components (41), the two groups of height adjustment components (41) are arranged oppositely at the two ends of the powder plate (3), and each of the height adjustment components (41) is drivingly connected to the end of the powder plate (3) for adjusting the relative height of the two ends of the powder plate (3).

2. A powder vacuum coating device according to claim 1, characterized in that: Each of the height adjustment components (41) comprises: A screw rod (411), wherein the screw rod (411) is arranged vertically; A transmission member (412), wherein the transmission member (412) is threadedly connected to the screw rod (411); A telescopic member (413), one end of which is fixedly connected to the end of the powder plate (3), and the other end of which is hinged to the transmission member (412).

3. A powder vacuum coating device according to claim 2, characterized in that: The material turning mechanism (4) further comprises a rotating disk (44) and an internal gear (42); the lower end of each screw rod (411) is rotationally connected to the rotating disk (44); the internal gear (42) is fixed in the vacuum chamber (1); the lower end of each screw rod (411) is also provided with a planetary gear (43); the internal gear (42) is meshingly connected to the planetary gear (43).

4. The powder vacuum coating device according to claim 3, characterized in that: The rotating disk (44) is provided with a rotating shaft (45), and the top end of the rotating shaft (45) is fixedly connected to the rotating disk (44).

5. The powder vacuum coating device according to claim 4, characterized in that: A driving motor (46) is provided at one end of the rotating shaft (45) away from the rotating disk (44), and an output end of the driving motor (46) is drivingly connected to the rotating shaft (45).

6. The powder vacuum coating device according to claim 3, characterized in that: Each of the screw rods (411) is provided with an external thread, and the external threads of the two screw rods (411) have opposite spiral directions.

7. The powder vacuum coating device according to claim 2, characterized in that: The telescopic member (413) includes a pivot member (4131) and a plurality of guide sleeves (4132), wherein the pivot member (4131) is rotatably connected to the transmission member (412), a sliding rod (4133) is provided on the pivot member (4131) corresponding to the guide sleeve (4132), the plurality of guide sleeves (4132) are fixed to the end of the powder disk (3), and one end of the sliding rod (4133) extends into the guide sleeve (4132) and is slidably connected to the guide sleeve (4132).

8. A powder vacuum coating device according to any one of claims 1 to 7, characterized in that: The powder plate (3) is rectangular and is provided with a receiving groove for receiving the powder to be coated.

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