Drying box for 3D printing material production

Abstract

The invention provides a drying box for 3D printing material production, and belongs to the technical field of 3D consumable drying devices. Comprising a shell fixing component, a rotary frame assembly, a swing cylinder assembly, a negative pressure adsorption assembly and an air blowing drying assembly, a rotary frame body is rotationally connected to the inner middle of the shell fixing component, and a material disc can be placed in a material containing disc connected to the top end of the rotary frame body; the transmission mechanism can drive the swing arm and the swing barrel to swing in a reciprocating mode, and synchronously, the swing barrel can drive the piston column to move in a reciprocating mode through the transmission connecting rod rotationally connected between the piston connecting rod and the transmission rotating base, so that on one hand, a material disc can be in a dynamic rotating state during drying; and on the other hand, the reciprocating swing of the swing cylinder and the reciprocating movement of the piston column can be utilized to form circulating drying work for the material tray placing space in the shell fixing component.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D consumables drying devices, and in particular to a drying box for producing 3D printing materials. Background Art

[0002] Storing and keeping 3D printing materials dry is an important step to ensure the success and quality of printing. If 3D printing materials absorb moisture and become damp, they will become brittle, bubbling or sticky, which will affect the quality of 3D printing.

[0003] Specifically, during 3D printing, the moisture will quickly vaporize after being heated in the high-temperature nozzle, causing the filament melt to expand, flow faster and produce pores, which in turn causes problems such as wire drawing, leakage, holes, rough surface and low strength of the printed parts, and the more moisture the filament is exposed to, the worse it will be.

[0004] Therefore, before printing the model, especially those models with high requirements on appearance quality, if you cannot confirm that the filament is dry enough before printing, you must dry it. Summary of the invention

[0005] The purpose of the present invention is to provide a drying box for the production of 3D printing materials, which can utilize a driving mechanism that drives the rotating frame to rotate slowly to form a coordinated transmission with a swing drum assembly and a negative pressure adsorption assembly, and cooperate with the moisture absorption and drying formed by the air blowing drying assembly and the hot air blowing effect to form a cyclic drying operation for the material tray located in the middle shell.

[0006] The object of the present invention is achieved through such a technical solution. A drying box for 3D printing material production includes a solid shell component, a rotating frame assembly, a swing cylinder assembly, a negative pressure adsorption assembly and an air blowing drying assembly. The solid shell component includes a middle shell, the rotating frame assembly includes a rotating frame body, the swing cylinder assembly includes a swing cylinder body, a central bevel gear and a swing solid rod, and the negative pressure adsorption assembly includes a piston column and a transmission connecting rod;

[0007] The rotating frame body is rotated in the middle of the middle shell, the top of the rotating frame body is connected to the material placing plate, the inner lower end of the middle shell is rotated with swing arms on both sides, the swing cylinder is fixed to the swing arm, the center bevel gear is inserted and fixed in the rotating frame body, the lower side of the bottom end of the middle shell is also symmetrically rotated with eccentric wheels, and the eccentric wheels are all connected to the center bevel gears in a transmission manner, the swing fixing rod is fixed to one end of the rotating shaft of the swing arm, and the eccentric end of the eccentric wheel on the same side is slidably connected to the swing fixing rod;

[0008] A negative pressure cylinder is obliquely fixed to one end of the side wall of the middle shell, a piston column is slidably connected in the negative pressure cylinder, and one side of the inner end of the piston column is screwed to the outer surface of a group of swing cylinders on the same side through a transmission connecting rod;

[0009] The side wall of the negative pressure cylinder in the middle shell is provided with a one-way air inlet, and the outer end of the negative pressure cylinder is provided with a one-way air outlet;

[0010] The air outlet end of the air blowing and drying component is connected to the air inlet end of the swing cylinder, and the air inlet end of the air blowing and drying component is connected to the air outlet end of the negative pressure cylinder.

[0011] The use process of the technical solution of the present invention is as follows:

[0012] A rotating drive structure is provided on one side of the rotating frame body, which can drive the rotating frame body to rotate slowly and at a uniform speed;

[0013] When the rotating frame body rotates, the central bevel gear can be driven to rotate, so that the central bevel gear can drive the rotation of the symmetrically distributed eccentric wheels through the transmission mechanism. The eccentric end of the eccentric wheel can drive the swing arm to swing back and forth within a certain amplitude range through the sliding connection formed with the swing fixed rod, thereby expanding the blowing range of the swing cylinder outlet in the middle shell;

[0014] When the swing cylinder body swings back and forth, a rotational connection can be formed between the transmission connecting rod and the piston column, thereby driving the piston column to move back and forth within a first amplitude range;

[0015] As the piston rod moves back and forth, the air in the middle shell can be extracted and discharged out of the negative pressure cylinder;

[0016] Since the air inlet end of the air-blowing and drying component is connected to the air outlet end of the negative pressure cylinder, and the air outlet end of the air-blowing and drying component is connected to the swing cylinder, the air-blowing and drying component can not only absorb the moisture discharged from the middle shell, but also provide heated gas to the swing cylinder;

[0017] With the help of the rotating frame to drive the material tray to rotate slowly, efficient circulation drying of the material tray in the center shell can be achieved.

[0018] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0019] (1) The present invention is based on a rotating frame body that is screwed in the middle of the middle shell, and the material tray can be connected to the rotating frame body to form a bracket-shaped structure, which not only allows the top of each group of material trays to be placed, but also drives the material tray located at the top of the material tray to rotate through the slow rotation of the rotating frame body, so that in the drying working state, the material tray can be in a non-static state, which is more conducive to removing moisture in the material tray;

[0020] (2) In addition, when the rotating frame body rotates, the present invention can also form a transmission match through the central bevel gear and the symmetrically distributed eccentric wheels, and utilize the sliding match formed by the eccentric end of the eccentric wheel and the swinging fixed rod to drive the swing arm fixedly connected to the swinging fixed rod to swing back and forth, thereby expanding the coverage range of the hot air blown out through the swinging cylinder outlet on the inner cavity of the center shell, and improving the drying efficiency of the hot air blown out through the swinging cylinder on the material tray;

[0021] (3) While the swing cylinder is swinging back and forth, the piston column can also be driven to move back and forth by a transmission connecting rod screwed between the piston column and the swing cylinder. The reciprocating movement of the piston column can form an effect of extracting air in the middle shell. The humid air in the middle shell can be extracted and dehumidified by the air blowing and drying component. The heated air can be blown into the middle shell again, forming a cyclic drying operation for the material tray in the middle shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of the overall structure of a drying box for 3D printing material production provided by the present invention;

[0024] Figure 2 It is a structural schematic diagram of the solid shell component of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the rotating frame assembly of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the swing drum assembly of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the eccentric wheel transmission part of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the negative pressure adsorption component of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the outer cover part of the present invention;

[0030] Figure 8 It is a schematic structural diagram of the air blowing and drying component of the present invention.

[0031] Figure numerals: 1, solid shell component; 2, rotating frame assembly; 3, swing cylinder assembly; 4, negative pressure adsorption assembly; 5, air blowing and drying assembly; 6, material tray; 101, bottom plate; 102, bottom shell; 103, middle shell; 104, top cover; 105, bottom rotating seat; 106, middle rotating seat; 201, rotating frame body; 202, material tray; 203, center gear; 204, driving motor; 205, driving gear; 301, swinging groove; 302, swinging rotating seat; 303, swinging arm; 304, swinging cylinder; 305, center bevel gear; 306, swinging fixed rod; 307, conversion seat; 308, eccentric wheel; 309, eccentric shaft; 310, swing arm shaft; 311, eccentric wheel center shaft; 312, conversion shaft; 313, double-sided bevel gear; 314, connecting bevel gear; 401, negative pressure cylinder; 402, inner cover; 403, piston connecting rod; 404, piston column; 405, transmission rotary seat; 406, transmission connecting rod; 407, air inlet hole; 408, air inlet valve plate groove; 409, air inlet valve plate; 410, outer cover; 411, outer connecting seat; 412, air outlet hole; 413, air outlet valve plate groove; 414, air outlet valve plate; 501, three-way hose; 502, side connecting pipe; 503, micro air compression pump; 504, drying box; 505, heating box. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] like Figure 1-Figure 8As shown, a drying box for 3D printing material production, the rotating frame body 201 in the rotating frame assembly 2 is rotated in the inner middle part of the middle shell 103, the top of the rotating frame body 201 is connected with an array of material trays 202 for placing material trays 202, the inner lower end of the middle shell 103 is screwed with swing arms 303 on both sides, the swing cylinder 304 is fixed to the swing arm 303, the center bevel gear 305 is inserted and fixed in the rotating frame body 201, the lower side of the bottom end of the middle shell 103 is also symmetrically screwed with eccentric wheels 308, and the eccentric wheels 308 are all connected to the center bevel gear 305 in transmission connection, the swing fixing rod 306 is fixed to one end of the rotating shaft of the swing arm 303, and the eccentric end of the eccentric wheel 308 on the same side is in sliding connection with the swing fixing rod 306;

[0035] When the rotating frame body 201 rotates, the swing arm 303 and the swing cylinder 304 can be driven to swing back and forth through the transmission mechanism;

[0036] A negative pressure cylinder 401 is obliquely fixed to one end of the side wall of the middle shell 103, and a piston column 404 is slidably connected in the negative pressure cylinder 401. One side of the inner end of the piston column 404 is screwed to the outer surface of a group of swing cylinders 304 on the same side through a transmission connecting rod 406, so that the piston column 404 can be driven to reciprocate in the negative pressure cylinder 401 while the swing cylinder 304 swings back and forth.

[0037] The side wall of the negative pressure cylinder 401 in the middle shell 103 is provided with a one-way air inlet, and the outer end of the negative pressure cylinder 401 is provided with a one-way air outlet, which can draw the air in the middle shell 103 and discharge it outside the middle shell 103 when the piston rod 404 moves back and forth;

[0038] The air outlet of the air blowing and drying component 5 is connected to the air inlet of the swing cylinder 304 , and the air inlet of the air blowing and drying component 5 is connected to the air outlet of the negative pressure cylinder 401 , so as to form a circulating drying operation of the air in the centering shell 103 .

[0039] Here’s how it works:

[0040] The material tray 6 to be dried can be placed on the top of the material tray 202;

[0041] A rotation driving structure is provided on one side of the rotating frame body 201, which can drive the rotating frame body 201 to rotate slowly and at a uniform speed;

[0042] When the rotating frame body 201 rotates, the central bevel gear 305 can be driven to rotate, so that the central bevel gear 305 can drive the symmetrically distributed eccentric wheels 308 to rotate through the transmission mechanism. The eccentric end of the eccentric wheel 308 can drive the swing arm 303 to swing back and forth within a certain amplitude range through the sliding cooperation formed with the swing fixing rod 306, thereby expanding the blowing range of the outlet of the swing cylinder 304 in the middle shell 103;

[0043] When the swing cylinder 304 swings back and forth, the transmission connecting rod 406 can be screwed together with the piston column 404 to drive the piston column 404 to move back and forth within the first amplitude range;

[0044] As the piston rod 404 reciprocates, the air in the middle shell 103 can be extracted and discharged out of the negative pressure cylinder 401;

[0045] Since the air inlet end of the air-blowing and drying component 5 is connected to the air outlet end of the negative pressure cylinder 401, and the air outlet end of the air-blowing and drying component 5 is connected to the swing cylinder 304, the air-blowing and drying component 5 can not only absorb the moisture discharged from the middle shell 103, but also provide heated gas to the swing cylinder 304;

[0046] With the help of the rotating frame 201 to drive the material tray 6 to rotate slowly, efficient circulation and drying of the material tray 6 in the centering shell 103 can be achieved.

[0047] The specific structure of the solid shell component 1 and the rotating frame assembly 2 is as follows: Figure 2 and Figure 3 As shown, a bottom shell 102 is fixed to the top of the bottom plate 101, a middle shell 103 is fixedly connected to the top of the bottom shell 102, and a top cover 104 is connected to the top of the middle shell 103;

[0048] A bottom rotating seat 105 is fixed at the middle of the top of the bottom plate 101, and a middle rotating seat 106 is installed and fixed at the middle of the top of the bottom shell 102;

[0049] The bottom end of the rotating frame body 201 is rotatably connected to the bottom rotating seat 105, and the middle part of the rotating frame body 201 is rotatably connected to the middle rotating seat 106. The stability of the rotating state of the rotating frame body 201 can be improved through the combined effect of the bottom rotating seat 105 and the middle rotating seat 106.

[0050] The central gear 203 is inserted and fixed in the rotating frame body 201, and the top surface of the bottom plate 101 is fixedly mounted with a driving motor 204, and the driving gear 205 is inserted and fixed in the rotating shaft of the driving motor 204, and the driving gear 205 is meshed with the central gear 203;

[0051] By removing and installing the top cover 104, the material tray 6 to be dried can be placed on the top of the material tray 202. Since the top of the material tray 202 is provided with a plug that matches the inner hole of the material tray 6, it is convenient to take and put the material tray 6, and when the rotating frame 201 rotates, the material tray 6 can safely rotate with the material tray 202.

[0052] Starting the driving motor 204 can drive the driving gear 205 to form a matching transmission with the central gear 203, thereby driving the rotating frame body 201 to rotate slowly and uniformly.

[0053] The specific structure of the swing drum assembly 3 is as follows: Figure 4 and Figure 5As shown, the swing groove 301 is symmetrically opened at the top of the main body of the bottom shell 102, and the inner top surface of the bottom shell 102 is also symmetrically fixed with a swing seat 302, and the swing seat 302 on the same side is directly opposite to the swing groove 301, and the swing arm 303 is rotatably connected to the swing seat 302 through the swing arm shaft 310 at the bottom end, and the swing groove 301 can provide space for the swing of the swing arm 303;

[0054] The swing fixing rod 306 is fixedly connected to one end of the swing arm shaft 310;

[0055] The top surface of the bottom plate 101 is also symmetrically fixed with conversion seats 307, one side of the top of each group of conversion seats 307 is rotatably connected to the eccentric wheel middle shaft 311, the middle part of the eccentric wheel 308 is fixedly connected to the eccentric wheel middle shaft 311, the eccentric end of the other side of the eccentric wheel 308 is fixedly connected to the eccentric shaft 309, and the eccentric shaft 309 is slidably connected to the swing fixing rod 306;

[0056] The other side of the top of each conversion seat 307 is also rotatably connected with a conversion shaft 312, a double-sided bevel gear 313 is inserted and fixed in the conversion shaft 312, and a connecting bevel gear 314 is inserted and fixed in the eccentric wheel center shaft 311, and one side of the double-sided bevel gear 313 is meshed with the central bevel gear 305, and the other side of the double-sided bevel gear 313 is meshed with the connecting bevel gear 314;

[0057] When the center bevel gear 305 rotates, it can form a matching transmission with the symmetrically distributed double-sided bevel gear 313. The double-sided bevel gear 313 can drive the rotation of the connecting bevel gear 314 through the tooth surface on the other side, so that the connecting bevel gear 314 drives the rotation of the eccentric wheel 308 coaxially through the eccentric wheel center axis 311. The eccentric wheel 308 drives the eccentrically fixed eccentric shaft 309 to form a sliding connection with the swing fixing rod 306, which can drive the swing arm shaft 310 and the swing arm 303 to form a reciprocating swinging motion, thereby driving the swing cylinder 304 to form a reciprocating swinging motion.

[0058] The specific structure of the negative pressure adsorption component 4 is as follows Figure 6 and Figure 7 As shown, the inner cover 402 is connected to the inner opening of the negative pressure cylinder 401, and the outer cover 410 is connected to the outer opening of the negative pressure cylinder 401;

[0059] The middle of the inner end of the piston column 404 is fixedly connected with a piston connecting rod 403, a transmission rotary seat 405 is fixedly connected to the outer corner of the swing cylinder 304, the piston connecting rod 403 is slidably connected in the inner cover 402, one end of the transmission connecting rod 406 is rotatably connected in the transmission rotary seat 405, and the other end is rotatably connected to the inner end of the piston connecting rod 403;

[0060] An air inlet hole 407 is provided on the side wall of the negative pressure cylinder 401 in the middle shell 103, an air inlet valve plate groove 408 is provided on the inner wall side of the negative pressure cylinder 401, and one end of the air inlet valve plate 409 is fixed in the air inlet valve plate groove 408;

[0061] An air outlet hole 412 is provided in the main body of the outer cover 410, an air outlet valve plate groove 413 is provided outside the outer cover 410, and one end of the air outlet valve plate 414 is fixedly installed in the air outlet valve plate groove 413;

[0062] The inlet valve plate 409 can form a one-way sealing effect on the inlet hole 407. Similarly, the outlet valve plate 414 can form a one-way sealing effect on the outlet hole 412, so that the inlet hole 407 is only used for air intake, and the outlet hole 412 is only used for exhaust.

[0063] While the swing cylinder 304 swings back and forth, the transmission connecting rod 406 screwed between the transmission rotating seat 405 and the piston connecting rod 403 can drive the piston connecting rod 403 to move back and forth within a certain stroke range, thereby driving the piston column 404 located in the negative pressure cylinder 401 to move back and forth;

[0064] Furthermore, the air intake valve plate 409 is located outside the travel range of the piston rod 404 , so that the air intake valve plate 409 will not interfere with the reciprocating movement of the piston rod 404 .

[0065] The specific connection structure of the air blowing and drying component 5 is as follows Figure 8 As shown, the air outlet ends on both sides of the three-way hose 501 pass through the bottom plate 101 and are respectively connected to the air inlet ends of the swing cylinder 304;

[0066] Since the three-way hose 501 is made of soft material, interference with the reciprocating swinging motion of the swing cylinder 304 can be eliminated;

[0067] One end of the side connecting pipe 502 is connected to the air inlet end of the three-way hose 501, and the other end is connected to the external connecting seat 411;

[0068] The outer bottom surface of the bottom plate 101 is equipped with a micro air compression pump 503, a drying box 504 and a heating box 505, and the micro air compression pump 503, the drying box 504 and the heating box 505 are all connected to the pipeline of the side connecting pipe 502;

[0069] A physical desiccant is placed in the drying box 504, which is located near the inlet of the side connecting pipe 502, and can first adsorb and dry the extracted moisture from the middle shell 103. An electric heating wire is installed in the heating box 505, and the heating box 505 is used to heat the air. The micro air compression pump 503 can generate air power to blow the dried air containing heat into the inner cavity of the middle shell 103.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drying box for 3D printing material production, comprising a solid shell component (1) and an air blowing and drying component (5), characterized in that: It also includes a rotating frame assembly (2), a swing cylinder assembly (3) and a negative pressure adsorption assembly (4); The rotating frame assembly (2) is screwed to the inner middle part of the solid shell component (1), and can be used to place 3D printing materials and drive the dynamic rotation of the 3D printing materials. The swing cylinder assembly (3) is connected to the rotating frame assembly (2) in a transmission manner, and can synchronously perform reciprocating swing-type air blowing on the solid shell component (1). The negative pressure adsorption assembly (4) is installed on one side of the solid shell component (1) and is connected to the swing cylinder assembly (3) in a transmission manner. The air blowing and drying assembly (5) is connected to the air path between the swing cylinder assembly (3) and the negative pressure adsorption assembly (4), and can jointly form a cyclic drying operation for the solid shell component (1).

2. A drying box for 3D printing material production according to claim 1, characterized in that: The solid shell component (1) comprises a middle shell (103), the rotating frame assembly (2) comprises a rotating frame body (201), the swing cylinder assembly (3) comprises a swing cylinder body (304), a central bevel gear (305) and a swing fixed rod (306), the negative pressure adsorption assembly (4) comprises a piston column (404) and a transmission connecting rod (406), the rotating frame body (201) is rotated in the middle part of the middle shell (103), the top of the rotating frame body (201) is connected to a material placing plate (202), both sides of the inner lower end of the middle shell (103) are screwed with swing arms (303), the swing cylinder body (304) is fixed to the swing arms (303), the central bevel gear (305) is inserted and fixed in the rotating frame body (201), and the lower side of the bottom end of the middle shell (103) is also symmetrically screwed with an eccentric wheel (308), and the eccentric wheel (308) is screwed with the central bevel gear ( The middle shell (103) is connected to the inner shell (103) by transmission connecting rod (405), the swing fixing rod (306) is fixed to one end of the rotating shaft of the swing arm (303), and the eccentric end of the eccentric wheel (308) on the same side is slidably connected to the swing fixing rod (306), a negative pressure cylinder (401) is obliquely fixed to one end of the side wall of the middle shell (103), the piston column (404) is slidably connected in the negative pressure cylinder (401), and one side of the inner end of the piston column (404) is screwed to the outside of a group of swing cylinders (304) on the same side through a transmission connecting rod (406), and the side wall of the negative pressure cylinder (401) located in the middle shell (103) is provided with a one-way air inlet, and the outer end of the negative pressure cylinder (401) is provided with a one-way air outlet, the air outlet end of the air blowing and drying component (5) is connected to the air inlet end of the swing cylinder (304), and the air inlet end of the air blowing and drying component (5) is connected to the air outlet end of the negative pressure cylinder (401).

3. A drying box for 3D printing material production according to claim 2, characterized in that: The solid shell component (1) further comprises a bottom plate (101) and a top cover (104); a bottom shell (102) is fixed to the top of the bottom plate (101); a middle shell (103) is fixedly connected to the top of the bottom shell (102); the top cover (104) is connected to the top of the middle shell (103); a bottom rotating seat (105) is fixed to the middle of the top of the bottom plate (101); and a middle rotating seat (106) is fixedly installed to the middle of the top of the bottom shell (102).

4. A drying box for 3D printing material production according to claim 3, characterized in that: The rotating frame assembly (2) further comprises a central gear (203) and a driving gear (205); the bottom end of the rotating frame body (201) is rotatably connected to the bottom rotating seat (105); the middle part of the rotating frame body (201) is rotatably connected to the middle rotating seat (106); the central gear (203) is plugged and fixed in the rotating frame body (201); a driving motor (204) is fixedly mounted on the top surface of the bottom plate (101); the driving gear (205) is plugged and fixed in the rotating shaft of the driving motor (204); and the driving gear (205) is meshed with the central gear (203).

5. A drying box for 3D printing material production according to claim 3 or 4, characterized in that: The swing cylinder assembly (3) further comprises a swing groove (301), a swing arm shaft (310), a double-sided bevel gear (313) and a connecting bevel gear (314); the swing groove (301) is symmetrically arranged at the top of the main body of the bottom shell (102); a swing swivel seat (302) is symmetrically fixed to the inner top surface of the bottom shell (102); the swing arm (303) is rotatably connected to the swing swivel seat (302) through the swing arm shaft (310) at the bottom end; the swing fixing rod (306) is fixedly connected to one end of the swing arm shaft (310); a conversion seat (307) is symmetrically fixed to the top surface of the bottom plate (101); one side of the top of each group of conversion seats (307) is rotatably connected to an eccentric wheel The middle part of the eccentric wheel (308) is fixedly connected to the eccentric wheel middle shaft (311), the eccentric end on the other side of the eccentric wheel (308) is fixedly connected to the eccentric shaft (309), the eccentric shaft (309) is slidably connected to the swing fixed rod (306), the other side of the top of each group of conversion seats (307) is also rotatably connected to the conversion shaft (312), the double-sided bevel gear (313) is plugged and fixed in the conversion shaft (312), the connecting bevel gear (314) is plugged and fixed in the eccentric wheel middle shaft (311), one side tooth surface of the double-sided bevel gear (313) is meshed with the central bevel gear (305), and the other side tooth surface is meshed with the connecting bevel gear (314).

6. A drying box for 3D printing material production according to claim 2, 3 or 4, characterized in that: The negative pressure adsorption component (4) also includes an inner cover (402), a transmission rotary seat (405), an air intake valve plate groove (408), an air intake valve plate (409), an outer cover (410), an outer connecting seat (411), an air outlet valve plate groove (413) and an air outlet valve plate (414). The inner cover (402) is connected to the inner end of the negative pressure cylinder (401), and the outer cover (410) is connected to the outer end of the negative pressure cylinder (401). The middle part of the inner end of the piston column (404) is fixedly connected to a piston connecting rod (403). The transmission rotary seat (405) is fixedly connected to the outer corner of the swing cylinder (304). The piston connecting rod (403) is slidably connected to the inner cover (402). One end of the transmission connecting rod (406) is rotatably connected to the transmission rotating seat (405), and the other end is rotatably connected to the inner end of the piston connecting rod (403). An air inlet hole (407) is provided on the side wall of the negative pressure cylinder (401) in the middle shell (103). An air inlet valve plate groove (408) is provided on the side of the inner wall of the negative pressure cylinder (401). One end of the air inlet valve plate (409) is fixed in the air inlet valve plate groove (408). An air outlet hole (412) is provided in the main body of the outer cover (410). An air outlet valve plate groove (413) is provided on the outside of the outer cover (410). One end of the air outlet valve plate (414) is fixedly installed in the air outlet valve plate groove (413).

7. A drying box for 3D printing material production according to claim 6, characterized in that: The air intake valve plate (409) is located outside the travel range of the piston rod (404).

8. A drying box for 3D printing material production according to claim 6, characterized in that: The air blowing and drying component (5) comprises a three-way hose (501) and a side connecting pipe (502). The air outlet ends on both sides of the three-way hose (501) pass through the bottom plate (101) and are respectively connected to the air inlet ends of the swing cylinder (304). One end of the side connecting pipe (502) is connected to the air inlet end of the three-way hose (501), and the other end is connected to the external connecting seat (411). A micro air compression pump (503), a drying box (504) and a heating box (505) are installed on the outer bottom surface of the bottom plate (101), and the micro air compression pump (503), the drying box (504) and the heating box (505) are all connected to the pipeline of the side connecting pipe (502).

Images