Additive manufacturing powder recovery equipment

Abstract

The invention relates to the technical field of powder recovery, in particular to additive manufacturing powder recovery equipment which comprises a box shell and a storage box. A box door; a feed conduit; the fixed-gap material screening units are symmetrically arranged on the outer sides of the feeding guide pipes on the two sides and fixedly connected with the box shell; the supporting energy transfer unit is arranged on the outer side of the bottom end of the box shell; the self-cleaning shaped screen unit is arranged between the fixed-gap material screening unit and the material storage box, and is connected with the supporting and energy transferring unit; wherein the self-cleaning shape screen unit comprises a shape screen assembly, a scraping assembly, a clamping type material receiving assembly and a transverse movement sensing assembly, the self-cleaning shape screen unit is arranged and matched with the fixed-gap material screening unit, size screening and shape screening of metal powder can be completed in sequence, meanwhile, unqualified products can be independently recycled in the screening process, and the screening efficiency is improved. And qualified products and unqualified products are prevented from being mixed, and the recovery rate is increased while the recovery efficiency is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of powder recovery, and in particular to an additive manufacturing powder recovery device. Background Art

[0002] Additive manufacturing, also known as 3D printing, is a manufacturing method based on the discrete-accumulation principle. It is driven by the three-dimensional data of the parts and directly manufactures parts through the "bottom-up" method of material accumulation. Additive powder is printed to form a three-dimensional object. It has the advantages of fewer steps and shorter processing cycles, and is suitable for various complex and precise parts products. In the additive manufacturing process, additive powder is an important material basis for the development of additive manufacturing technology, and the cost of powder is also a significant part of the additive manufacturing cost. Since metal powder of the same height needs to be laid according to the height of the part during additive manufacturing molding, the utilization rate of metal powder is not high. Therefore, the repeated recycling of powder is one of the key links in additive manufacturing. That is, the metal powder that has not been sintered / melted after a single molding is collected, processed, and recycled for molding again. For the recovered metal powder that has not melted and solidified into parts, it undergoes a series of dynamic thermal interactions with the heat source during the molding process, which will affect the properties of the metal powder itself. The splashing, adhesion, remelting, etc. during the molding process increase the large particles in the metal powder, increase the aspect ratio of the recycled metal powder, increase the number of irregularly shaped particles, and have more attached particles and bonded particles. The particle size distribution, porosity, fluidity and loose density of the metal powder have an important influence on the surface roughness and mechanical properties of the molded parts. Therefore, in the process of recycling metal powder, it is necessary to screen out the metal powder particles that have not undergone significant changes, and to screen out the particles that have undergone changes such as enlargement, attachment, and adhesion.

[0003] In the prior art, a screen is often used to screen the recovered metal powder to remove the deformed metal powder. However, as the screening process continues, large particles of metal powder and impurities retained on the screen can easily clog the screen, reducing the screening efficiency. In order to remove large particles and impurities on the screen in time, a coarse material collection barrel is set in the recovery device, and the pipe connected to the inlet of the coarse material collection barrel is connected to the position above the screen, and a discharge valve is set at the pipe mouth. The discharge valve is opened and closed by monitoring the weight of the material on the screen, and the screen is set at a certain inclination angle. The discharge valve is set at the lower end, and the material is guided to the higher end of the screen to feed, so that the material on the screen passes through the discharge valve into the coarse material collection barrel. However, the fluidity of the recovered metal powder, especially the particles with increased aspect ratio, irregular shape, attachment and adhesion, is seriously reduced, and the fluidity of metal powder particles that meet the recycling requirements is relatively better. Therefore, the inclined screen is easy to cause more qualified products to fall into the discharge valve when recycling unqualified products into the discharge valve. Therefore, in view of the above situation, there is an urgent need to develop an additive manufacturing powder recovery equipment to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The object of the present invention is to provide an additive manufacturing powder recovery device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A powder recovery device for additive manufacturing comprises: a box shell and a storage box, the storage box being plugged into the bottom inner side of the box shell; a box door, the box door being arranged on the outside of the box shell, one end of the box door being rotatably connected to the box wall of the box shell by a rotating shaft, and the other end being connected to the box shell by a lock; a feed conduit, the feed conduit being symmetrically arranged on the top shell wall of the box shell and fixedly connected to the box shell; a fixed-gap screening unit, the fixed-gap screening unit being symmetrically arranged on the outside of the feed conduit on both sides and fixedly connected to the box shell for realizing fixed-size screening of metal powder; a support energy transmission unit, the support energy transmission unit being arranged on the outside of the bottom end of the box shell and connected to the box shell for realizing longitudinal vibration of the box shell; a self-cleaning shape screen unit, the self-cleaning shape screen unit being arranged between the fixed-gap screening unit and the storage box, being connected to the box shell, and being connected to the support energy transmission unit It is connected to realize the screening and export of metal powder with regular shape, and complete the automatic recovery of unqualified products; wherein, the self-cleaning shape screen unit includes: a shape screen assembly, a scraper assembly, a snap-on material collection assembly and a transverse movement sensing assembly, the shape screen assembly is arranged between the fixed-gap screen unit and the storage box, and is slidably connected to the inner wall of the box shell, the inner sides of both ends of the shape screen assembly are detachably connected and provided with a snap-on material collection assembly, the inner side of the shape screen assembly is also provided with a transverse movement sensing assembly connected to the box shell, the transverse movement sensing assembly is also connected to the support energy transmission unit, and is used to cooperate with the support energy transmission unit to realize the transverse reciprocating motion of the shape screen assembly, the outer side of the top of the shape screen assembly is abutted with a scraper assembly, the scraper assembly is connected to the box shell, and is used to cooperate with the snap-on material collection assembly to complete the automatic recovery of unqualified products accumulated on the surface of the shape screen assembly.

[0007] As a further solution of the present invention: the shaped screen assembly includes: an installation slide, a clamping groove, a screen plate, an electric telescope and a placement groove. The installation slide is arranged between the fixed gap screening material unit and the storage box, is slidably connected to the inner wall of the box shell, and is connected to the transverse movement sensing assembly. Placement grooves for installing the clamping type material receiving assembly are provided on the shell walls on both sides of the installation slide. A clamping groove is provided between the placement grooves on both sides. The clamping groove is provided on the shell wall of the installation slide on the side close to the fixed gap screening material unit. The screen plate is clamped on the inner side of the clamping groove, and a number of electric telescopes arranged opposite to the screen plate are fixedly connected to the inner side of the installation slide.

[0008] As a further solution of the present invention: the card-type material collecting component includes: a recycling box, a card-connecting seat, a control handle and a positioning block. The recycling box is plugged into the placement slot, and a card-connecting seat is fixedly connected to the outside of the recycling box. Positioning blocks are slidably connected on the shell walls on both sides of the card-connecting seat. A spring is fixedly connected between the positioning block and the card-connecting seat. The positioning block is card-connected to the slot provided on the shell wall of the mounting slide, and a control handle is also fixedly connected to the outside of the card-connecting seat.

[0009] As a further solution of the present invention: the lateral movement sensing assembly includes: a connecting box, a sensing tube, a control tube, a control groove and a control piston. The connecting box is fixedly connected to the outside of the box shell, and the box wall of the connecting box is fixedly connected with a sensing tube connected to the support energy transmission unit. The connecting box is also fixedly connected with a control tube, and the outer wall of the other end of the control tube is fixedly connected with a control piston. The control piston is slidably connected to the control groove arranged on the inner side of the mounting slide, and is used to cooperate with the support energy transmission unit to realize the reciprocating motion of the mounting slide.

[0010] As a further solution of the present invention: the scraper assembly includes: a control motor, a threaded rod, a cleaning scraper and a belt member. The cleaning scraper is abutted against the outside of the top of the mounting slide. The cleaning scraper is threadedly connected to the threaded rod symmetrically arranged on the box shell. The threaded rod is rotatably connected to the shell wall of the box shell. The control motor is fixedly connected to the outside of the box shell, and the output end of the control motor is connected to the threaded rods on both sides through a belt member.

[0011] As a further solution of the present invention: the support energy transmission unit includes: a mounting base, a drive control motor, a drive control rod, a cam, a positioning frame and a guide control assembly. The mounting base is arranged on the outside of the bottom end of the box shell, and slide grooves are provided on the shell walls on both sides of the mounting base. The inner side of the slide groove is slidingly connected with a positioning frame fixedly connected to the box shell, the outside of the mounting base is fixedly connected with the drive control motor, the output end of the drive control motor is fixedly connected to the drive control rod, and several cams fixedly connected to the drive control rod are provided between the mounting base and the box shell, and the cams abut against the box wall at the bottom end of the box shell. A guide control assembly is also provided between the box shell and the mounting base, and the guide control assembly is fixedly connected to the mounting base and is connected to the transverse movement sensing assembly.

[0012] As a further solution of the present invention: the guide and control assembly includes: a fixed plate, a transmission and control plate, a transmission and control rod and a regulating gas piece. The fixed plate is arranged on the outside of the box shell and is fixedly connected to the mounting base. A transmission and control plate is arranged between the fixed plate and the connecting boxes on both sides. A transmission and control rod is rotatably connected to the transmission and control plate, and the other end of the transmission and control rod is rotatably connected to the fixed plate. A regulating gas piece that is slidably connected to the induction tube is also fixedly connected to the transmission and control plate, which is used to cooperate with the lifting and lowering of the box shell to realize the flow of air inside the connecting box.

[0013] As a further solution of the present invention: the fixed-gap screening unit includes: a trapezoidal guide seat, a collection box, a gap control component, an energy transmission component, a control box, a retractable control tube, a retractable component, a guide plate, a support tube and a vent tube. The trapezoidal guide seat is symmetrically arranged on the top of the inner side of the box shell and is fixedly connected to the box shell. A gap control component fixedly connected to the box shell is arranged between the trapezoidal guide seats on both sides. The feed conduit is arranged between the trapezoidal guide seat and the gap control component. A guide plate is arranged on the shell wall of the trapezoidal guide seat close to the gap control component. The top of the guide plate is rotatably connected to the shell wall of the trapezoidal guide seat through a rotating rod, and the other end is fixed on the outside. A positioning baffle is provided in the connection, and a collecting box which is clamped with the trapezoidal guide seat is provided on the outer side of the bottom end of the guide plate, and a supporting tube which is rotatably connected to the box shell is provided on the outer side of the top of the collecting box, and a transmission control box which is fixedly connected to the box shell is provided on the outer side of both ends of the support tube, and a retractable control tube which is fixedly connected to the support tube is provided on the inner side of the trapezoidal guide seat, and a number of ventilation tubes which are fixedly connected to the support tube are provided on the inner side of the retractable control tube, and a retractable part is provided in a sliding connection on the inner side of the retractable control tube, and the other end of the retractable part is rotatably connected to the guide plate, and the transmission control box is connected to the gap control component through the energy transmission component, and is used to cooperate with the gap control component to realize the opening and closing of the guide plate.

[0014] As a further solution of the present invention: the gap control component includes: a support plate, a limiting guide plate, a guide rod, an L-shaped support rod, a lifting plate, a telescopic controller, an adjusting motor, a regulating rod, a control panel, a connecting rod, a cooperative control frame, a limit plate and a connecting seat. The support plate is arranged between the trapezoidal guide seats on both sides and is fixedly connected to the inner wall of the top end of the box shell. The bottoms of both ends of the support plate are slidably connected to limit guide plates. The two ends of the limit guide plate are respectively slidably connected to the inner wall of the box shell and the box door. A lifting plate connected to the energy transmission component is arranged between the limiting guide plates on both sides. A telescopic controller is fixedly provided between the lifting plate and the support plate. A guide rod is symmetrically arranged on the outer side of the limiting guide plate near one end of the lifting plate. The guide rod is connected to the limiting guide plate. The guide plate is fixedly connected, and an L-shaped support rod is slidingly connected to the inner side of the guide rod and is fixedly connected to the support plate. An adjusting motor is fixedly connected to the outer side of the lifting plate, and the output end of the adjusting motor is fixedly connected to the regulating rod. A control plate is threadedly connected to the outer side of the regulating rod. Connecting rods are rotatably connected on the plate walls on both sides of the control plate, and the other end of the connecting rod is rotatably connected to the cooperative control frame. The cooperative control frame is slidingly connected to the limit plate fixedly connected to the lifting plate, and the cooperative control frame is also slidably connected to the T-slot provided on the connecting seat. The connecting seat is fixedly connected to the adjacent side limiting guide plates, and is used to cooperate with the lifting and lowering of the control plate to realize the directional lateral movement of the limiting guide plates on both sides, thereby completing the adjustment of the gap size between the limiting guide plates and the trapezoidal guide seat.

[0015] As a further solution of the present invention: the energy transmission component includes: a sub-control box, an energy guiding tube, an energy transmission tube and a control component. The sub-control box is arranged between the lifting plate and the support plate and is fixedly connected to the support plate. A guide control cavity is symmetrically arranged on the inner side of the sub-control box. The guide control cavity is connected to the energy transmission tube fixedly connected to the sub-control box. A control component fixedly connected to the lifting plate is slidingly connected on the inner side of the energy transmission tube. The guide control cavity is also connected to the energy guiding tube fixedly connected to the sub-control box. The other end of the energy guiding tube is connected to the transmission control box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the device is in operation, the replacement and maintenance of the internal components of the equipment are completed by opening and closing the box door. When screening, the metal powder enters the inner side of the box shell along the feed conduit. The fixed-gap screening unit can complete the size screening of the metal powder by adjusting the size of the screening gap. At the same time, the fixed-gap screening unit can automatically recycle the metal powder of unqualified size. The screened metal powder enters the inner side of the shape screen component. The support energy transmission unit can support the box shell and drive the box shell to vibrate longitudinally. During the movement of the box shell, it can drive the transverse sensing component. The transverse sensing component can drive the shape screen component to reciprocate laterally. The shape screen component is used to screen the metal powder that has passed the size screening. The metal powder is then shape-screened so that regular-shaped metal powder is screened out and the screened metal powder falls into the inner side of the storage box, while irregular metal powder remains on the shape screen component. The scraper component pushes the unqualified products accumulated on the surface of the shape screen component into the inner sides of the clip-on receiving components on both sides to ensure the efficiency of subsequent screening. This application sets a self-cleaning shape screen unit and cooperates with a fixed-gap screening unit to complete the size screening and shape screening of metal powder in succession, thereby ensuring the quality of the recycled metal powder. At the same time, unqualified products can be independently recycled during the screening process to avoid mixing of qualified and unqualified products, thereby ensuring the recycling efficiency and improving the recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the additive manufacturing powder recovery equipment.

[0019] Figure 2 A cross-sectional view of an additive manufacturing powder recovery device.

[0020] Figure 3 Schematic diagram of the structure of the medium-shaped screen assembly of the additive manufacturing powder recovery equipment.

[0021] Figure 4 Cross-sectional view of the median screen assembly for additive manufacturing powder recovery equipment.

[0022] Figure 5 This is a schematic diagram of the structure of the clip-on material collection component in the additive manufacturing powder recovery equipment.

[0023] Figure 6 Schematic diagram of the structure of the lateral movement sensing component in the additive manufacturing powder recovery equipment.

[0024] Figure 7 Schematic diagram of the structure of the scraper component in the additive manufacturing powder recovery equipment.

[0025] Figure 8 This is a schematic diagram of the structure of the support energy transfer unit in the additive manufacturing powder recovery equipment.

[0026] Figure 9 This is a schematic diagram of the structure of the guide and control components in the additive manufacturing powder recovery equipment.

[0027] Figure 10 This is a schematic diagram of the structure of the fixed-gap screening unit in the additive manufacturing powder recovery equipment.

[0028] Figure 11 This is a cross-sectional view of the fixed-gap screening unit in the additive manufacturing powder recovery equipment.

[0029] Figure 12 A cross-sectional view of a trapezoidal guide in an additive manufacturing powder recovery device.

[0030] Figure 13 for Figure 12 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Figure 14 Schematic diagram of the structure of the gap control component in the additive manufacturing powder recovery equipment.

[0032] Figure 15 Schematic diagram of the structure of the energy transmission component in the additive manufacturing powder recovery equipment.

[0033] In the figure: 1. Box shell; 2. Box door; 3. Lock; 4. Feed duct; 5. Support and energy transmission unit; 6. Fixed gap screening unit; 7. Self-cleaning shape screen unit; 8. Shape screen assembly; 9. Scraper assembly; 10. Snap-on material receiving assembly; 11. Transverse movement sensing assembly; 12. Mounting slide; 13. Snap-on groove; 14. Screen plate; 15. Electric telescopic device; 16. Placement groove; 17. Recovery box; 18. Snap-on seat; 19. Control handle; 20. Positioning block; 21. Connection box; 22. Induction tube; 23. Control tube; 24. Control groove; 25. Control piston; 26. Control motor; 27. Threaded rod; 28. Cleaning scraper; 29. ​​Belt; 30. Mounting base; 31. Drive motor; 32. Drive rod; 33. Cam; 34. Fixed Frame; 35. Slide; 36. Guide control assembly; 37. Fixed plate; 38. Control plate; 39. Control rod; 40. Control gas parts; 41. Trapezoidal guide seat; 42. Collecting box; 43. Storage box; 44. Gap control assembly; 45. Energy transmission assembly; 46. Control box; 47. Retractable control pipe; 48. Retractable parts; 49. Guide plate; 50. Support pipe; 51. Ventilation pipe; 52. Support plate; 53. Limiting guide plate; 54. Guide rod; 55. L-shaped support rod; 56. Lifting plate; 57. Telescopic controller; 58. Adjusting motor; 59. Control rod; 60. Control board; 61. Connecting rod; 62. Co-control frame; 63. Limiting plate; 64. Connecting seat; 65. Sub-control box; 66. Energy guide pipe; 67. Energy transmission pipe; 68. Control parts. DETAILED DESCRIPTION

[0034] The technical solution of this application is further described in detail below in conjunction with specific implementation methods.

[0035] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0036] See also Figure 1 and Figure 2In one embodiment of the present invention, an additive manufacturing powder recovery device includes: a box shell 1 and a storage box 43, wherein the storage box 43 is plugged into the bottom inner side of the box shell 1; a box door 2, wherein the box door 2 is arranged on the outside of the box shell 1, one end of the box door 2 is rotatably connected to the box wall of the box shell 1 through a rotating shaft, and the other end is connected to the box shell 1 through a lock 3; a feeding conduit 4, wherein the feeding conduit 4 is symmetrically arranged on the top shell wall of the box shell 1 and is fixedly connected to the box shell 1; a fixed-gap screening unit 6, wherein the fixed-gap screening unit 6 is symmetrically arranged on the outside of the feed conduit 4 on both sides and is fixedly connected to the box shell 1 for realizing fixed-size screening of metal powder; a supporting energy transmission unit 5, wherein the supporting energy transmission unit 5 is arranged on the outside of the bottom end of the box shell 1 and is connected to the box shell 1 for realizing longitudinal vibration of the box shell 1; a self-cleaning shaped screen unit 7, wherein the self-cleaning shaped screen unit 7 is arranged between the fixed-gap screening unit 6 and the storage box 43, is connected to the box shell 1, and is connected to the box shell 1 It is connected to the support and energy transmission unit 5, and is used to realize the screening and export of metal powder with regular shape, and complete the automatic recovery of unqualified products; wherein, the self-cleaning shape screen unit 7 includes: a shape screen component 8, a scraper component 9, a snap-on material receiving component 10 and a transverse movement sensing component 11, the shape screen component 8 is arranged between the fixed gap screen unit 6 and the storage box 43, and is slidably connected to the inner wall of the box shell 1, and the inner sides of both ends of the shape screen component 8 are detachably connected and provided with a snap-on material receiving component 10, and the inner side of the shape screen component 8 is also provided with a transverse movement sensing component 11 connected to the box shell 1, and the transverse movement sensing component 11 is also connected to the support and energy transmission unit 5, and is used to cooperate with the support and energy transmission unit 5 to realize the transverse reciprocating motion of the shape screen component 8, and a scraper component 9 is abutted against the outer side of the top of the shape screen component 8, and the scraper component 9 is connected to the box shell 1, and is used to cooperate with the snap-on material receiving component 10 to complete the automatic recovery of unqualified products accumulated on the surface of the shape screen component 8.

[0037] In this embodiment, when the device is in operation, the replacement and maintenance of the internal components of the equipment are completed by opening and closing the box door 2. When screening, the metal powder enters the inner side of the box shell 1 along the feed conduit 4, and the fixed-gap screening unit 6 can complete the fixed-size screening of the metal powder by adjusting the size of the screening gap. At the same time, the fixed-gap screening unit 6 can automatically recycle the metal powder of unqualified size. The metal powder after screening enters the inner side of the shaped screen component 8, and the support energy transmission unit 5 can complete the support of the box shell 1 and drive the box shell 1 to vibrate longitudinally. During the movement of the box shell 1, the transverse sensing component 11 can be driven, and the transverse sensing component 11 can drive the shaped screen component 8 to reciprocate laterally. The shaped screen component 8 is used to The metal powder after size screening is subjected to shape screening, so that metal powder with regular shape is screened out, and the screened metal powder falls into the inner side of the storage box 43, while irregular metal powder remains on the shape screen component 8. The scraper component 9 pushes the unqualified products accumulated on the surface of the shape screen component 8 into the inner side of the clip-on collecting components 10 on both sides to ensure the efficiency of subsequent screening. The present application sets a self-cleaning shape screen unit 7 and cooperates with the fixed-gap screening unit 6 to complete the size screening and shape screening of the metal powder in succession, thereby ensuring the quality of the recycled metal powder. At the same time, unqualified products can be independently recovered during the screening process to avoid mixing of qualified and unqualified products, thereby ensuring the recovery efficiency and improving the recovery rate.

[0038] In one embodiment of the present invention, please refer to Figure 2 、 Figure 3 and Figure 4 The shaped screen assembly 8 includes: an installation slide 12, a clamping groove 13, a screen plate 14, an electric retractor 15 and a placement groove 16. The installation slide 12 is arranged between the fixed gap screening material unit 6 and the storage box 43, and is slidably connected to the inner wall of the box shell 1, and is connected to the transverse movement sensing assembly 11. Placement grooves 16 for installing the clamping type material receiving assembly 10 are provided on the shell walls on both sides of the installation slide 12. A clamping groove 13 is provided between the placement grooves 16 on both sides. The clamping groove 13 is provided on the shell wall of the installation slide 12 on the side close to the fixed gap screening material unit 6. The sieve plate 14 is clamped on the inner side of the clamping groove 13. Several electric retractors 15 arranged opposite to the sieve plate 14 are fixedly connected to the inner side of the installation slide 12.

[0039] The scraper assembly 9 can move the metal powder on the sieve plate 14 upward so that the top of the sieve plate 14 is flush with the top of the mounting slide 12. The scraper assembly 9 can send the metal powder on the sieve plate 14 to the inner side of the clamping type collecting assembly 10 on both sides. By setting the shape screen assembly 8, the metal powder particles that have not undergone significant changes can be screened out, and the particles that have undergone changes such as enlargement, attachment, and adhesion can be screened out. The sieve plate 14 can also be flexibly replaced according to needs to ensure the flexibility of screening, and can cooperate with the clamping type collecting assembly 10 and the scraper assembly 9 to automatically recover the metal powder on the sieve plate 14, and can prevent qualified products from falling into the inner side of the clamping type collecting assembly 10 during screening, thereby ensuring the recovery rate.

[0040] In one embodiment of the present invention, please refer to Figure 3 and Figure 5 The snap-on material receiving assembly 10 includes: a recycling box 17, a snap-on seat 18, a control handle 19 and a positioning block 20. The recycling box 17 is plugged into the placement slot 16. The outer side of the recycling box 17 is fixedly connected with a snap-on seat 18. Positioning blocks 20 are slidably connected on both sides of the shell wall of the snap-on seat 18. A spring is fixedly connected between the positioning block 20 and the snap-on seat 18. The positioning block 20 is snapped with a slot provided on the shell wall of the mounting slide 12. The outer side of the snap-on seat 18 is also fixedly connected with a control handle 19.

[0041] In this embodiment, a storage slot for storing a snap-on seat 18 is provided on the shell wall of the mounting slide 12 close to the box door 2, and the snap-on seat 18 is provided on the slot wall of the storage slot. When the recycling box 17 is inserted into the inner side of the placement slot 16, the snap-on seat 18 is placed on the inner side of the storage slot, and the outer wall of the snap-on seat 18 is flush with the outer wall of the mounting slide 12, and the top outer wall of the recycling box 17 is flush with the top outer wall of the mounting slide 12. The setting of the control handle 19 makes it convenient for people to take and place the recycling box 17. By setting up a snap-on material collecting component 10, it can cooperate with the scraping component 9 to complete the automatic recovery of unqualified metal powder accumulated on the screen plate 14, and it is convenient for disassembly and assembly, which improves the convenience of taking and placing, and can avoid the falling of qualified products during screening.

[0042] In one embodiment of the present invention, please refer to Figure 6The lateral movement sensing component 11 includes: a connecting box 21, a sensing tube 22, a control tube 23, a control groove 24 and a control piston 25. The connecting box 21 is fixedly connected to the outside of the box shell 1. The box wall of the connecting box 21 is fixedly connected with the sensing tube 22 connected to the support energy transmission unit 5. The connecting box 21 is also fixedly connected with the control tube 23. The control piston 25 is fixedly connected with the outer wall of the other end of the control tube 23. The control piston 25 is slidably connected to the control groove 24 arranged on the inner side of the mounting slide 12, and is used to cooperate with the support energy transmission unit 5 to realize the reciprocating motion of the mounting slide 12.

[0043] In this embodiment, connecting boxes 21 are provided at the front and rear ends of the side walls of the box shell 1, and control grooves 24 are provided on the inner sides of the shell walls at the front and rear ends of the mounting slide 12. The support and energy transmission unit 5 can drive the box shell 1 to reciprocate up and down. The movement of the box shell 1 drives the air inside the sensing tube 22 to enter the inside of the connecting box 21, and the air inside the connecting box 21 enters the inside of the control groove 24 along the control tube 23, and cooperates with the control piston 25 to realize the lateral reciprocating motion of the mounting slide 12. The mounting slide 12 drives the sieve plate 14 to move synchronously, which is beneficial to improving the screening efficiency of the sieve plate 14 for metal powder. By setting the transverse movement sensing component 11, the support and energy transmission unit 5 can be cooperated to realize the lateral reciprocating motion of the mounting slide 12, thereby improving the screening efficiency of the equipment for metal powder with regular shape.

[0044] In one embodiment of the present invention, please refer to Figure 2 and Figure 7 The scraper assembly 9 includes: a control motor 26, a threaded rod 27, a cleaning scraper 28 and a belt member 29. The cleaning scraper 28 is abutted against the outside of the top of the mounting slide 12. The cleaning scraper 28 is threadedly connected to the threaded rod 27 symmetrically arranged on the box shell 1. The threaded rod 27 is rotatably connected to the shell wall of the box shell 1. The control motor 26 is fixedly connected to the outside of the box shell 1. The output end of the control motor 26 is connected to the threaded rods 27 on both sides through a belt member 29.

[0045] In this embodiment, the belt member 29 is composed of a pulley and a belt. The output end of the control motor 26 and the outer sides of the threaded rods 27 on both sides are fixedly connected with pulleys, and the pulleys are connected by belts. As the sieve plate 14 is lifted up, the control motor 26 drives the threaded rods 27 on both sides to rotate synchronously through the pulleys and belts. The threaded rods 27 drive the cleaning scraper 28 to move along the outer wall of the top of the mounting slide 12, pushing the metal powder on the sieve plate 14 into the inside of the recycling box 17 to complete the recycling of unqualified products. By setting the scraper assembly 9, unqualified products can be independently recycled during the screening process to avoid mixing of qualified products and unqualified products, thereby ensuring the recycling efficiency and improving the recycling rate.

[0046] In one embodiment of the present invention, please refer to Figure 1 and Figure 8 The support energy transmission unit 5 includes: a mounting base 30, a drive control motor 31, a drive control rod 32, a cam 33, a positioning frame 34 and a guide control assembly 36. The mounting base 30 is arranged on the outside of the bottom end of the box shell 1, and slide grooves 35 are provided on the shell walls on both sides of the mounting base 30. The inner side of the slide groove 35 is slidingly connected with a positioning frame 34 fixedly connected to the box shell 1. The drive control motor 31 is fixedly connected to the outside of the mounting base 30, and the output end of the drive control motor 31 is fixedly connected to the drive control rod 32. Several cams 33 fixedly connected to the drive control rod 32 are provided between the mounting base 30 and the box shell 1, and the cams 33 abut against the bottom wall of the box shell 1. A guide control assembly 36 is also provided between the box shell 1 and the mounting base 30. The guide control assembly 36 is fixedly connected to the mounting base 30 and is connected to the transverse movement sensing assembly 11.

[0047] In this embodiment, the positioning frame 34 can cooperate with the mounting base 30 to ensure the stability of the box shell 1 during lifting and lowering. The drive motor 31 drives the drive rod 32 to rotate, and the drive rod 32 drives the cam 33 to rotate. The rotation of the cam 33 is used to realize the up and down reciprocating motion of the box shell 1. During the lifting and lowering process of the box shell 1, the air inside the connecting box 21 can be connected in and out through the guide control component 36, thereby realizing the lateral reciprocating motion of the installation slide 12, and at the same time, the box shell 1 is vibrated up and down. By setting the support energy transmission unit 5, not only can the support of the box shell 1 be completed, but the longitudinal reciprocating motion of the box shell 1 can also be realized. The lateral reciprocating motion of the installation slide 12 can also be realized at the same time, which not only ensures the screening efficiency of the fixed-gap screening unit 6, but also improves the screening efficiency of the self-cleaning screen unit 7, thereby improving the screening efficiency of the equipment, realizing efficient recovery of qualified products, and effectively reducing the blockage of the equipment.

[0048] In one embodiment of the present invention, please refer to Figure 9 The guide and control assembly 36 includes: a fixed plate 37, a transmission and control plate 38, a transmission and control rod 39 and a regulating gas piece 40. The fixed plate 37 is arranged on the outside of the box shell 1 and is fixedly connected to the mounting base 30. A transmission and control plate 38 is provided between the fixed plate 37 and the connecting boxes 21 on both sides. A transmission and control rod 39 is rotatably connected to the transmission and control plate 38, and the other end of the transmission and control rod 39 is rotatably connected to the fixed plate 37. A regulating gas piece 40 that is slidably connected to the induction tube 22 is also fixedly connected to the transmission and control plate 38, which is used to cooperate with the lifting and lowering of the box shell 1 to realize the flow of air inside the connecting box 21.

[0049] In this embodiment, the regulating gas component 40 includes a first piston slidably connected to the inner side of the induction tube 22 and a first push rod fixedly connected to the first piston, the other end of the first push rod is fixedly connected to the transmission plate 38, and a plurality of transmission rods 39 are arranged between the transmission plate 38 and the fixed plate 37. The transmission rods 39 on the same side are equidistantly arranged. When the box shell 1 moves up or down, the box shell 1 will rise and fall relative to the fixed plate 37, and the box shell 1 will drive the connecting box 21 and the induction tube 22 to rise and fall synchronously, and the transmission plate 38 will also rise and fall synchronously with the connecting box 21. During the lifting and lowering of the transmission plate 38, the transmission rod 39 arranged between the transmission plate 38 and the fixed plate 37 can drive the first piston to move laterally inside the induction tube 22, thereby realizing the entry and exit of air inside the connecting box 21. By setting the guide control component 36, the lateral reciprocating motion of the installation slide 12 is realized in conjunction with the lifting and lowering of the box shell 1, thereby improving the equipment's screening efficiency for metal powder.

[0050] In one embodiment of the present invention, please refer to Figure 10 、 Figure 11 、 Figure 12 and Figure 13 The fixed-gap screening unit 6 includes: a trapezoidal guide seat 41, a collecting box 42, a gap adjustment component 44, an energy transmission component 45, a control box 46, a retractable control tube 47, a retractable component 48, a guide plate 49, a support tube 50 and a vent tube 51. The trapezoidal guide seat 41 is symmetrically arranged on the top inner side of the box shell 1 and is fixedly connected to the box shell 1. A gap adjustment component 44 fixedly connected to the box shell 1 is arranged between the trapezoidal guide seats 41 on both sides. The feed conduit 4 is arranged between the trapezoidal guide seat 41 and the gap adjustment component 44. A guide plate 49 is provided on the shell wall of the trapezoidal guide seat 41 close to the gap adjustment component 44. The top of the guide plate 49 is rotatably connected to the shell wall of the trapezoidal guide seat 41 through a rotating rod, and the other end is fixedly connected to the outside thereof. The baffle plate is positioned, and a collecting box 42 is provided on the outer side of the bottom end of the guide plate 49, which is clamped with the trapezoidal guide seat 41. A supporting tube 50 rotatably connected to the box shell 1 is provided on the outer side of the top of the collecting box 42. Both ends of the support tube 50 are covered with a transmission control box 46 fixedly connected to the box shell 1. A retractable control tube 47 fixedly connected to the support tube 50 is provided on the inner side of the trapezoidal guide seat 41. A number of ventilation tubes 51 fixedly connected to the support tube 50 are provided on the inner side of the retractable control tube 47. A retractable component 48 is provided on the inner side of the retractable control tube 47 in a sliding connection. The other end of the retractable component 48 is rotatably connected to the guide plate 49. The transmission control box 46 is connected to the gap control component 44 through the energy transmission component 45, and is used to cooperate with the gap control component 44 to realize the opening and closing of the guide plate 49.

[0051] In this embodiment, the retractable member 48 includes a second piston slidably connected to the inner side of the retractable control tube 47 and a second push rod fixedly connected to the second piston. The other end of the second push rod is rotatably connected to the guide plate 49. When screening materials, the guide plate 49 fits the outer wall of the trapezoidal guide seat 41 and cooperates with the gap control component 44 to screen the metal powder. The metal powder of unqualified size remains between the guide plate 49 and the gap control component 44. The gap control component 44 can extract the air inside the control box 46 through the energy transmission component 45. The air inside the retractable control tube 47 flows into the air along the vent pipe 51 on the support tube 50. On the inside of the transmission and control box 46, the second piston is driven to move inside the retraction and release control tube 47. The second piston cooperates with the second push rod to drive the guide plate 49 to rotate around the rotating rod, and the unqualified products are introduced into the inside of the collection box 42. Then the guide plate 49 is reset to screen the subsequent metal powder. By setting the fixed-gap screening unit 6, the screening gap in the screening can be adjusted according to demand, so that the equipment can flexibly screen metal powders with different needs, and can also automatically recycle metal powders that do not meet the size standards during the screening process. The recycling and screening processes are carried out separately to avoid mixing of qualified and unqualified products and ensure the recovery rate.

[0052] In one embodiment of the present invention, please refer to Figure 11 and Figure 14, the gap control assembly 44 includes: a support plate 52, a limiting guide plate 53, a guide rod 54, an L-shaped support rod 55, a lifting plate 56, a telescopic controller 57, an adjustment motor 58, a regulating rod 59, a control panel 60, a connecting rod 61, a co-control frame 62, a limit plate 63 and a connecting seat 64. The support plate 52 is arranged between the trapezoidal guide seats 41 on both sides and is fixedly connected to the inner wall of the top of the box shell 1. The bottom of both ends of the support plate 52 are slidably connected to the limiting guide plate 53. The two ends of the limiting guide plate 53 are respectively slidably connected to the inner wall of the box shell 1 and the box door 2. A lifting plate 56 connected to the energy transmission assembly 45 is provided between the limiting guide plates 53 on both sides. A telescopic controller 57 is fixedly provided between the lifting plate 56 and the support plate 52. The limiting guide plate 53 is symmetrically provided with a guide rod 54 on the outside of one end near the lifting plate 56. The guide rod 54 and the limiting The guide plate 53 is fixedly connected, and the inner side of the guide rod 54 is slidably connected to an L-shaped support rod 55 fixedly connected to the support plate 52. The outer side of the lifting plate 56 is fixedly connected to an adjusting motor 58, and the output end of the adjusting motor 58 is fixedly connected to the regulating rod 59. The outer side of the regulating rod 59 is threadedly connected to a control plate 60. Connecting rods 61 are rotatably connected on the plate walls on both sides of the control plate 60, and the other end of the connecting rod 61 is rotatably connected to the auxiliary control frame 62. The auxiliary control frame 62 is slidably connected to the limit plate 63 fixedly connected to the lifting plate 56, and the auxiliary control frame 62 is also slidably connected to the T-slot provided on the connecting seat 64. The connecting seat 64 is fixedly connected to the adjacent side limiting guide plates 53, and is used to cooperate with the lifting and lowering of the control plate 60 to realize the directional lateral movement of the limiting guide plates 53 on both sides, thereby completing the adjustment of the gap size between the limiting guide plates 53 and the trapezoidal guide seat 41.

[0053] In this embodiment, the telescopic controller 57 is an electric push rod, which can realize the lifting and lowering of the lifting plate 56. During the lifting and lowering process of the lifting plate 56, it can cooperate with the energy transmission component 45 to realize the opening and closing of the guide plate 49. The adjustment motor 58 drives the control rod 59 to rotate, and the control rod 59 drives the control plate 60 to lift and lower. The control plate 60 cooperates with the connecting rod 61 to drive the auxiliary control frame 62 to move horizontally along the limit plate 63. The auxiliary control frame 62 cooperates with the connecting seat 64 to realize the synchronous movement of the limiting guide plate 53. By adjusting the gap between the limiting guide plate 53 and the guide plate 49, the equipment can screen metal powders of different sizes. By setting the gap control component 44, the screening gap can be adjusted, which is beneficial to improving the screening flexibility of the equipment.

[0054] In one embodiment of the present invention, please refer to Figure 10 and Figure 15The energy transmission assembly 45 includes: a sub-control box 65, an energy guide tube 66, an energy transmission tube 67 and a control part 68. The sub-control box 65 is arranged between the lifting plate 56 and the support plate 52 and is fixedly connected to the support plate 52. A guide control cavity is symmetrically arranged on the inner side of the sub-control box 65. The guide control cavity is connected to the energy transmission tube 67 fixedly connected to the sub-control box 65. A control part 68 fixedly connected to the lifting plate 56 is slidably connected on the inner side of the energy transmission tube 67. The guide control cavity is also connected to the energy guide tube 66 fixedly connected to the sub-control box 65. The other end of the energy guide tube 66 is connected to the control box 46.

[0055] In this embodiment, the control component 68 includes a third piston slidingly connected to the inner side of the energy transfer tube 67 and a third push rod fixedly connected to the third piston. The other end of the third push rod is fixedly connected to the lifting plate 56. During the lifting process of the lifting plate 56, the air inside the guide cavity can be driven by the third piston to enter and exit the control box 46 along the energy transfer tube 66, thereby realizing the opening and closing of the material guide plate 49.

[0056] The additive manufacturing powder recovery equipment, the regulating motor 58 drives the regulating rod 59 to rotate, the regulating rod 59 drives the control plate 60 to rise and fall, the control plate 60 cooperates with the connecting rod 61 to drive the auxiliary control frame 62 to move horizontally along the limit plate 63, and the auxiliary control frame 62 cooperates with the connecting seat 64 to realize the synchronous movement of the limiting guide plate 53, and by adjusting the gap between the limiting guide plate 53 and the guide plate 49, the metal powder enters the inner side of the box shell 1 along the feed conduit 4, and the limiting guide plate 53 and the guide plate 49 complete the size screening of the metal powder, and the screened metal powder falls on the screen plate 14. The sieve holes on the screen plate 14 can screen the metal powder with regular shapes, and the screened metal powder is screened. The powder falls into the inner side of the storage box 43, and the driving control motor 31 drives the driving control rod 32 to rotate, and the driving control rod 32 drives the cam 33 to rotate. The rotation of the cam 33 realizes the up and down reciprocating motion of the box shell 1. During the lifting process of the box shell 1, the box shell 1 will lift relative to the fixed plate 37, and the box shell 1 will drive the connecting box 21 and the induction tube 22 to lift synchronously, and the transmission control plate 38 will also lift synchronously with the connecting box 21. During the lifting process of the transmission control plate 38, the transmission control rod 39 arranged between the transmission control plate 38 and the fixed plate 37 can drive the first piston to move laterally inside the induction tube 22, thereby realizing the inflow and outflow of air inside the connecting box 21, and the inside of the connecting box 21 The air on the side enters the inner side of the control groove 24 along the control pipe 23, and cooperates with the control piston 25 to realize the lateral reciprocating motion of the mounting slide 12. The mounting slide 12 drives the sieve plate 14 to move synchronously, which is beneficial to improving the screening efficiency of the sieve plate 14 for metal powder. After the screening is completed, irregular metal powder remains on the surface of the sieve plate 14. The electric telescopic device 15 drives the sieve plate 14 to move upward so that the top of the sieve plate 14 is flush with the top of the mounting slide 12. The control motor 26 drives the threaded rods 27 on both sides to rotate synchronously through the pulley and belt. The threaded rod 27 drives the cleaning scraper 28 to move along the outer wall of the top of the mounting slide 12, pushing the metal powder on the sieve plate 14 back into the screen. Inside the collecting box 17, the recovery of unqualified products is completed. At the same time, the telescopic controller 57 drives the lifting plate 56 to move. During the lifting process of the lifting plate 56, the third piston can drive the air flow inside the guide cavity. The air inside the transmission control box 46 flows out along the energy guide tube 66, and the air inside the transmission control box 46 is extracted. The air inside the retractable control tube 47 flows into the inside of the transmission control box 46 along the ventilation tube 51 on the support tube 50, driving the second piston to move inside the retractable control tube 47. The second piston cooperates with the second push rod to drive the guide plate 49 to rotate around the rotating rod, and the unqualified products are introduced into the inside of the collection box 42. Then the guide plate 49 is reset to screen the subsequent metal powder.

[0057] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An additive manufacturing powder recovery device, characterized in that: include: A box shell and a material storage box, wherein the material storage box is plugged into the bottom inner side of the box shell; The box door is arranged on the outside of the box shell, one end of the box door is rotatably connected to the box wall of the box shell through a rotating shaft, and the other end is connected to the box shell through a lock; A feed conduit, which is symmetrically arranged on the top wall of the box shell and fixedly connected to the box shell; Fixed-gap screening units, symmetrically arranged outside the feed conduits on both sides and fixedly connected to the box shell, are used to achieve fixed-size screening of metal powder; A supporting energy transmission unit, which is arranged on the outer side of the bottom end of the box shell and connected to the box shell, and is used to realize the longitudinal vibration of the box shell; A self-cleaning sieve unit is provided between the fixed-gap screening unit and the storage box, is connected to the box shell, and is connected to the supporting energy transmission unit, and is used to screen and guide out metal powders with regular shapes, and automatically recycle unqualified products; Among them, the self-cleaning shaped screen unit includes: a shaped screen assembly, a scraper assembly, a snap-on material collecting assembly and a transverse movement sensing assembly. The shaped screen assembly is arranged between the fixed-gap screen unit and the storage box, and is slidably connected to the inner wall of the box shell. The inner sides of both ends of the shaped screen assembly are detachably connected and provided with a snap-on material collecting assembly. The inner side of the shaped screen assembly is also provided with a transverse movement sensing assembly connected to the box shell. The transverse movement sensing assembly is also connected to the support energy transmission unit for cooperating with the support energy transmission unit to realize the transverse reciprocating motion of the shaped screen assembly. A scraper assembly is abutted against the outer side of the top end of the shaped screen assembly. The scraper assembly is connected to the box shell for cooperating with the snap-on material collecting assembly to complete the automatic recovery of unqualified products accumulated on the surface of the shaped screen assembly.

2. The additive manufacturing powder recovery equipment according to claim 1, characterized in that: The shaped screen assembly includes: an installation slide, a clamping groove, a screen plate, an electric expander and a placement groove. The installation slide is arranged between the fixed-gap screening material unit and the storage box, is slidably connected to the inner wall of the box shell, and is connected to the transverse movement sensing assembly. Placement grooves for installing the clamping type material receiving assembly are provided on the shell walls on both sides of the installation slide. A clamping groove is provided between the placement grooves on both sides. The clamping groove is provided on the shell wall of the installation slide on the side close to the fixed-gap screening material unit. The screen plate is clamped on the inner side of the clamping groove. Several electric expanders arranged opposite to the screen plate are fixedly connected to the inner side of the installation slide.

3. The additive manufacturing powder recovery equipment according to claim 2, characterized in that: The card-type material receiving assembly includes: a recycling box, a card-connecting seat, a control handle and a positioning block. The recycling box is plugged into the placement slot, and a card-connecting seat is fixedly connected to the outside of the recycling box. Positioning blocks are slidably connected on the shell walls on both sides of the card-connecting seat. A spring is fixedly connected between the positioning block and the card-connecting seat. The positioning block is card-connected to the card slot set on the shell wall of the installation slide, and a control handle is also fixedly connected to the outside of the card-connecting seat.

4. The additive manufacturing powder recovery device according to claim 3, characterized in that: The transverse movement sensing assembly includes: a connecting box, a sensing tube, a control tube, a control groove and a control piston. The connecting box is fixedly connected to the outside of the box shell, and a sensing tube connected to the support energy transmission unit is fixedly connected to the box wall of the connecting box. The connecting box is also fixedly connected to the control tube, and a control piston is fixedly connected to the outer wall of the other end of the control tube. The control piston is slidably connected to the control groove arranged on the inner side of the mounting slide, and is used to cooperate with the support energy transmission unit to realize the reciprocating motion of the mounting slide.

5. The additive manufacturing powder recovery equipment according to claim 4, characterized in that: The scraper assembly includes: a control motor, a threaded rod, a cleaning scraper and a belt member. The cleaning scraper is abutted against the outside of the top end of the mounting slide. The cleaning scraper is threadedly connected to the threaded rod symmetrically arranged on the box shell. The threaded rod is rotatably connected to the shell wall of the box shell. The control motor is fixedly connected to the outside of the box shell, and the output end of the control motor is connected to the threaded rods on both sides through a belt member.

6. The additive manufacturing powder recovery device according to claim 4, characterized in that: The support energy transmission unit includes: a mounting base, a drive control motor, a drive control rod, a cam, a positioning frame and a guide control assembly. The mounting base is arranged on the outside of the bottom end of the box shell, and slide grooves are provided on the shell walls on both sides of the mounting base. The inner side of the slide groove is slidingly connected with a positioning frame fixedly connected to the box shell, the outside of the mounting base is fixedly connected with the drive control motor, the output end of the drive control motor is fixedly connected to the drive control rod, and several cams fixedly connected to the drive control rod are provided between the mounting base and the box shell, and the cams abut against the box wall at the bottom end of the box shell. A guide control assembly is also provided between the box shell and the mounting base, and the guide control assembly is fixedly connected to the mounting base and is connected to the transverse movement sensing assembly.

7. The additive manufacturing powder recovery device according to claim 6, characterized in that: The guide and control assembly includes: a fixed plate, a transmission and control plate, a transmission and control rod and a regulating gas piece. The fixed plate is arranged on the outside of the box shell and is fixedly connected to the mounting base. A transmission and control plate is arranged between the fixed plate and the connecting boxes on both sides. A transmission and control rod is rotatably connected to the transmission and control plate, and the other end of the transmission and control rod is rotatably connected to the fixed plate. A regulating gas piece that is slidably connected to the induction tube is also fixedly connected to the transmission and control plate, which is used to cooperate with the lifting and lowering of the box shell to realize the flow of air inside the connecting box.

8. The additive manufacturing powder recovery device according to claim 1, characterized in that: The fixed-gap screening unit includes: a trapezoidal guide seat, a collection box, a gap adjustment component, an energy transmission component, a control box, a retractable control tube, a retractable component, a guide plate, a support tube and a vent tube. The trapezoidal guide seat is symmetrically arranged on the top inner side of the box shell and is fixedly connected to the box shell. A gap adjustment component fixedly connected to the box shell is arranged between the trapezoidal guide seats on both sides. The feed conduit is arranged between the trapezoidal guide seat and the gap adjustment component. A guide plate is arranged on the shell wall of the trapezoidal guide seat close to the gap adjustment component. The top of the guide plate is rotatably connected to the trapezoidal guide seat shell wall through a rotating rod, and a fixed The baffle is positioned, and a collecting box that is clamped with a trapezoidal guide seat is provided on the outer side of the bottom end of the guide plate, and a supporting tube that is rotatably connected to the box shell is provided on the outer side of the top of the collecting box, and a transmission control box that is fixedly connected to the box shell is provided on the outer side of both ends of the support tube, and a retractable control tube that is fixedly connected to the support tube is provided on the inner side of the trapezoidal guide seat, and a number of ventilation tubes that are fixedly connected to the support tube are provided on the inside of the retractable control tube, and a retractable part is provided on the inner side of the retractable control tube in a sliding connection, and the other end of the retractable part is rotatably connected to the guide plate, and the transmission control box is connected to the gap control component through the energy transmission component, and is used to cooperate with the gap control component to realize the opening and closing of the guide plate.

9. The additive manufacturing powder recovery device according to claim 8, characterized in that: The gap control assembly includes: a support plate, a limiting guide plate, a guide rod, an L-shaped support rod, a lifting plate, a telescopic controller, an adjusting motor, a regulating rod, a control panel, a connecting rod, a co-control frame, a limit plate and a connecting seat. The support plate is arranged between the trapezoidal guide seats on both sides and is fixedly connected to the inner wall of the top end of the box shell. The bottoms of both ends of the support plate are slidably connected to limit guide plates. The two ends of the limit guide plate are slidably connected to the inner wall of the box shell and the box door respectively. A lifting plate connected to the energy transmission assembly is provided between the limiting guide plates on both sides. A telescopic controller is fixedly connected between the lifting plate and the support plate. A guide rod is symmetrically provided on the outer side of the limiting guide plate near one end of the lifting plate, and the guide rod is fixedly connected to the limiting guide plate The inner side of the guide rod is slidingly connected to an L-shaped support rod fixedly connected to the support plate, and an adjusting motor is fixedly connected to the outer side of the lifting plate, and the output end of the adjusting motor is fixedly connected to the regulating rod, and a control plate is threadedly connected to the outer side of the regulating rod. Connecting rods are rotatably connected to the plate walls on both sides of the control plate, and the other end of the connecting rod is rotatably connected to the cooperative control frame. The cooperative control frame is slidingly connected to the limit plate fixedly connected to the lifting plate, and the cooperative control frame is also slidingly connected to the T-slot provided on the connecting seat. The connecting seat is fixedly connected to the adjacent side limit guide plates, and is used to cooperate with the lifting of the control plate to realize the directional lateral movement of the limit guide plates on both sides, thereby completing the adjustment of the gap size between the limit guide plates and the trapezoidal guide seat.

10. The additive manufacturing powder recovery device according to claim 9, characterized in that: The energy transmission assembly includes: a sub-control box, an energy guide tube, an energy transmission tube and a control component. The sub-control box is arranged between the lifting plate and the support plate and is fixedly connected to the support plate. A guide control cavity is symmetrically arranged on the inner side of the sub-control box. The guide control cavity is connected to the energy transmission tube fixedly connected to the sub-control box. A control component fixedly connected to the lifting plate is slidingly connected on the inner side of the energy transmission tube. The guide control cavity is also connected to the energy guide tube fixedly connected to the sub-control box. The other end of the energy guide tube is connected to the control box.

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