Cabin structure of 3D printer

Abstract

The utility model relates to the technical field of 3D (three-dimensional) printers, in particular to a cabin structure of a 3D printer, which comprises a movable cabin with a sealing door, a forming cabin is horizontally arranged at the top of the movable cabin in a sliding manner, a placing plate is vertically arranged in the forming cabin in a sliding manner, and a toothed plate is fixed on the outer wall of the forming cabin. A rotating gear meshed with the toothed plate is rotationally arranged on the outer wall of the movable cabin; the bottom of the placing plate is connected to the bottom of the movable cabin through at least one telescopic rod, a screw rod is rotationally arranged at the bottom of the placing plate, and the outer wall of the screw rod is sleeved with a second bevel gear in a threaded mode. According to the cabin structure of the 3D printer, in the 3D printing process, a printing base plate does not shake or deviate, and the printing quality is not affected; and after printing is completed, the forming cabin can move to the upper end of the sealing door and is in a closed state, so that inert gas in the forming cabin is kept in the forming cabin, excessive waste of the gas is avoided, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a cabin structure of a 3D printer. Background Art

[0002] 3D printers are rapid manufacturing devices that create three-dimensional objects by depositing materials layer by layer. Existing 3D printers require a purge operation behind the sealed molding chamber. This involves injecting inert gas to reduce the oxygen content to below 100 ppm before printing can begin. After printing is complete, the molded object must be removed and the substrate replaced. This releases the airtight chamber, allowing the inert gas atmosphere to leak and the oxygen content to rise. To print again, the sealed chamber must be refilled with inert gas until the oxygen content drops below 100 ppm again before printing can resume.

[0003] The existing patent (publication number: CN214392354U) discloses a body structure of a 3D printer. The technical solution of the utility model is: it includes a cabin, the cabin is a sealed frame structure composed of sheet materials, a laser assembly is installed on the top of the cabin, a scraper drive mechanism is installed inside the cabin, a lifting cylinder A and a lifting cylinder B are installed at the bottom of the cabin, and the cylinder ports of the lifting cylinder A and the lifting cylinder B extend into the interior of the cabin, and the scraper drive mechanism is driven and installed with a scraper located above the cylinder ports of the lifting cylinder A and the lifting cylinder B. The laser assembly includes a laser lens, which is located directly above the lifting cylinder A, and a focal length adjustment knob is installed on the laser lens; the cabin box of the printer of the utility model adopts a sealing form of plate groove joints, and with sealant, the sealing effect of the box is relatively good; the laser assembly can adjust the lens height through a thread, thereby adjusting the lens focal length position, which is simple and reliable; the dual lifting cylinders are controlled by a servo motor with high precision. In the process of implementing the present invention, it was found that the existing technology had the following problems: 1. In the existing technology, the substrate is driven by a lifting cylinder to enter the molding chamber for printing. However, the substrate is not provided with a reinforcement structure, which makes it easy to shake and deflect during the lifting process, thereby affecting the printing quality; 2. In the process of changing different substrates for printing, the cabin is in an unsealed state for a long time, the inert gas in the cabin will leak, and the oxygen content will increase. Subsequent printing requires filling with inert gas, which increases production costs. Utility Model Content

[0004] The present invention aims to provide a 3D printer cabin structure to address the issues raised in the aforementioned background art, namely, that existing cabin structures are inconvenient for securing substrates and maintaining inert gas within the cabin when replacing substrates. To achieve these objectives, the present invention provides the following technical solution: a 3D printer cabin structure comprising a movable cabin with a sealed door, a molding cabin sliding horizontally on top of the movable cabin, and a placement plate sliding vertically within the molding cabin, characterized in that:

[0005] A toothed plate is fixed to the outer wall of the molding cabin, and a rotating gear meshing with the toothed plate is rotated on the outer wall of the movable cabin;

[0006] The bottom of the placement plate is connected to the bottom of the movable cabin through at least one telescopic rod, and a screw is rotated at the bottom of the placement plate, and a second bevel gear is threadedly sleeved on the outer wall of the screw;

[0007] Also includes:

[0008] a driving member, the driving member braking the rotating gear and the second bevel gear to rotate;

[0009] A clamping plate capable of sliding horizontally is provided on the top of the placement plate, and a printing substrate is clamped in the middle of the clamping plate.

[0010] Preferably, the driving member includes:

[0011] a motor, the motor being fixed to the side wall of the movable chamber, and having a transmission rod fixed to its output end, the transmission rod braking the rotating gear through a worm gear assembly;

[0012] The rotating rod is parallel to the transmission rod and is arranged in the movable cabin. The rotating rod and the transmission rod are connected through a transmission assembly, and the rotating rod is driven by the meshing of the first bevel gear and the second bevel gear.

[0013] Preferably, a hollow pillar is fixed to the inner bottom of the movable cabin, and the screw is located inside the pillar, and the second bevel gear rotates on the top of the pillar.

[0014] Preferably, the worm gear assembly comprises:

[0015] A worm, the worm being hollow and fixedly sleeved on the outer wall of the transmission rod;

[0016] A worm wheel is coaxially fixed with the rotating gear through a rotating shaft, and the worm wheel is meshed with the worm for transmission.

[0017] Preferably, one end of the rotating rod passes through the side wall of the movable chamber and extends outward, and the transmission assembly includes:

[0018] A pinion gear, the pinion gear being fixedly sleeved on the outer wall of the extending end of the rotating rod;

[0019] A large gear, the side wall of the movable chamber is rotatably connected to a support shaft, the large gear is fixedly sleeved on the outer wall of the support shaft, and the small gear and the large gear are meshed for transmission;

[0020] A belt transmission member is used for transmission between the support shaft and the transmission rod.

[0021] Preferably, the belt transmission member comprises:

[0022] a first pulley, the first pulley being fixedly sleeved on the outer wall of the transmission rod;

[0023] a second pulley, the second pulley being fixedly sleeved on the outer wall of the support shaft;

[0024] A belt is connected between the first pulley and the second pulley.

[0025] Preferably, the inner wall of the second helical gear is provided with an external thread, and the external thread cooperates with the screw thread.

[0026] Preferably, two supports are fixed to the outer wall of the movable cabin, and the two supports are respectively mounted with the motor and the transmission rod.

[0027] Preferably, a groove is provided on the top of the placement plate, a fixing rod is fixed inside the groove, a spring is sleeved on the outside of the fixing rod, a slider is fixed on the end side of the spring, and the slider is fixedly connected to the clamping plate.

[0028] Preferably, the slider is slidably sleeved with the fixing rod, and two card plates are provided, and opposite sides of the two card plates are attached to two sides of the printing substrate.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] In the utility model, a spring and a card plate are provided, and the card plate is always adhered to both sides of the printing substrate by the elasticity of the spring, so that it is limited and fixed, so that it will not shake or deviate during the printing process, thereby affecting the printing quality.

[0031] In the utility model, the molding chamber is driven to move right to above the sealing door to seal it. When the substrate is replaced, the gas in the molding chamber is in a sealed state, so that the inert gas in the chamber will not leak, and part of the inert gas will be retained therein, avoiding excessive waste of gas and the need to re-fill a large amount of inert gas during subsequent printing, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 For the utility model Figure 1 Schematic diagram of the overall isometric structure;

[0034] Figure 3 For the utility model Figure 1 Schematic diagram of the movable structure of the mid-molding cabin;

[0035] Figure 4 For the utility model Figure 1 Schematic diagram of the connection structure between the intermediate molding cabin and the internal components of the movable cabin;

[0036] Figure 5 For the utility model Figure 4 Schematic diagram of the connection structure of the first helical gear, screw, large gear, rotating rod and other components;

[0037] Figure 6 For the utility model Figure 4 Schematic diagram of the connection structure between the printed substrate and the placement board.

[0038] In the picture:

[0039] 1. Activity cabin;

[0040] 2. Sealed door;

[0041] 3. Molding chamber; 31. Support; 32. Motor; 33. Transmission rod; 34. Worm; 35. Worm gear; 36. Rotating shaft; 37. Rotating gear; 38. Gear plate;

[0042] 4. Rotating rod; 41. First pulley; 42. Belt; 43. Second pulley; 44. Support shaft; 45. Large gear; 46. Small gear;

[0043] 5. Pillar;

[0044] 6. Screw; 61. First helical gear; 62. Second helical gear;

[0045] 7. Place the board;

[0046] 8. Card plate; 81. Groove; 82. Fixing rod; 83. Spring; 84. Slider;

[0047] 9. Print the substrate. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0049] See also Figures 1 to 6 The present invention provides a technical solution: a cabin structure of a 3D printer, comprising a movable cabin 1, a sealed door 2 installed on the top of the movable cabin 1, and a switch door installed on the side wall of the movable cabin 1. The switch door is not shown in the figure to show the main structure. When the switch door is open, it is convenient to take out the printing substrate 9. A molding cabin 3 that can slide horizontally is provided on the top of the movable cabin 1. The molding cabin 3 is a sealed structure. In order to better show the internal structure, Figure 1 It is a sectional structural diagram. A rotatable turning rod 4 is installed in the middle of the movable cabin 1. The turning rod 4 is arranged in the horizontal direction, and the axis of the turning rod 4 is arranged along the sliding direction of the molding cabin 3. A pillar 5 is fixed inside the movable cabin 1. The pillar 5 is vertically arranged, and its bottom is fixedly connected to the inner bottom surface of the movable cabin 1. The inside of the pillar 5 is hollow and the top is provided with an opening. A screw 6 that can be lifted and lowered is installed inside the pillar 5, and a placement plate 7 is installed on the top of the screw 6. A card plate 8 that can slide horizontally is provided on the top of the placement plate 7. There are two card plates 8, and a printing substrate 9 is clamped in the middle of the card plates 8.

[0050] The bottom of the placement plate 7 is provided with a telescopic rod for constraining the vertical linear movement of the placement plate 7. The telescopic rod is a sleeve structure that is nested within each other. This is a prior art technique and will not be described in detail. Furthermore, the ends of the telescopic rod are fixed to the bottom of the placement plate 7 and the bottom of the movable chamber 1, respectively.

[0051] In this embodiment, a support 31 is fixed to the side wall of the movable cabin 1, and a motor 32 is fixed to the end side of the support 31. The fixation here means that the outer shell of the motor 32 is installed on the support 31, and the motor 32 is fixedly connected to the side wall of the movable cabin 1 through the support 31. The output end of the motor 32 is fixedly connected to the transmission rod 33, and the outside of the transmission rod 33 is fixedly sleeved with a worm gear 34.

[0052] In this embodiment, two supports 31 are provided, and the other support 31 is provided next to the previous support 31 . The transmission rod 33 is rotatably connected to the two supports 31 , and the transmission rod 33 is placed in the two supports 31 for rotational movement.

[0053] In this embodiment, the side wall of the movable cabin 1 is rotationally connected with a rotating shaft 36, the rotating shaft 36 is vertically arranged with the transmission rod 33, wherein the outer part of the rotating shaft 36 is fixedly sleeved with a worm wheel 35, the worm wheel 35 is meshingly connected with a worm 34, and the outer part of the rotating shaft 36 is fixedly sleeved with a rotating gear 37.

[0054] In this embodiment, the side wall of the forming cabin 3 is fixedly connected with a toothed plate 38, and the toothed plate 38 is meshingly connected with the rotating gear 37.

[0055] It should be noted that the toothed plate 38 will move during the rotation of the rotating gear 37, so that the forming cabin 3 at the end side of the toothed plate 38 moves to the upper end of the sealing door 2 to seal the forming cabin 3, so that the forming cabin 3 is always in a sealed state, thereby maintaining the inert gas atmosphere in the forming cabin, saving gas washing cost and waiting time, and realizing efficient production.

[0056] In this embodiment, the outer part of the transmission rod 33 is fixedly sleeved with a first pulley 41, the side wall of the movable cabin 1 is rotationally connected with a support shaft 44, the outer part of the support shaft 44 is fixedly sleeved with a second pulley 43, and the outer parts of the first pulley 41 and the second pulley 43 are woundly connected with a belt 42.

[0057] In this embodiment, the outer part of the support shaft 44 is fixedly sleeved with a large gear 45, the outer part of the rotating rod 4 is fixedly sleeved with a small gear 46, and the large gear 45 is meshingly connected with the small gear 46.

[0058] It should be noted that the rotation range of the large gear 45 is larger than that of the small gear 46, and when the large gear 45 rotates, the small gear 46 is meshed with it, and the small gear 46 will rotate more than several turns than the large gear 45.

[0059] In this embodiment, the outer part of the rotating rod 4 is fixedly sleeved with a first bevel gear 61, the top of the support column 5 is rotationally sleeved with a second bevel gear 62, the first bevel gear 61 and the second bevel gear 62 are meshingly connected, and the inner part of the second bevel gear 62 is provided with an external thread threadedly matched with the screw rod 6.

[0060] In turn, the first bevel gear 61 is rotated and meshed with the second bevel gear 62, the screw rod 6 is threadedly connected to the external thread in the second bevel gear 62, and the second bevel gear 62 is rotatably arranged at the top of the support column 5, wherein the rotation connection preferably adopts a rotating sleeve ring structure, the vertical section of the rotating sleeve ring is C-shaped, and the side wall of the support column 5 is provided with a sunken ring groove matched with a horizontal end of the rotating sleeve ring, the horizontal end of the rotating sleeve ring is rotated in the sunken ring groove, so as to ensure that the second bevel gear 62 rotates while avoiding position change in the vertical direction, and then the second bevel gear 62 rotates to brake the screw rod 6 to rotate and ascend.

[0061] In this embodiment, a groove 81 is provided on the top of the placement plate 7. The groove 81 is in the shape of a long strip. A fixing rod 82 is fixed inside the groove 81. The fixing rod 82 is arranged along the length direction of the groove 81. A spring 83 is sleeved on the outside of the fixing rod 82. A slider 84 is fixed on the end side of the spring 83. The other end of the spring 83 acts on the inner wall of the groove 81. The action relationship can be abutment or fixed connection. The slider 84 is fixedly connected to the card plate 8.

[0062] In this embodiment, the slider 84 is slidably connected to the fixing rod 82, and two card plates 8 are provided. When the spring 83 is in the original length state, the distance between the opposite side walls of the two card plates 8 is smaller than the width of the printing substrate 9. When the printing substrate 9 is fixed, the spring 83 can be in a compressed state, so that the two card plates 8 are respectively fitted with the two sides of the printing substrate 9.

[0063] It should be noted that the card plate 8 can be provided to fix the printing substrate 9 so that the stability of the printing will not be affected by shaking during the printing process.

[0064] It should be noted that the specific model and specifications of the motor 32 need to be selected based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it is not described in detail.

[0065] The use method and advantages of the utility model: When the cabin structure of the 3D printer is working, the working process is as follows:

[0066] When printing, first open the switch door of the movable cabin 1, move the card plates 8 on the placement plate 7 to both sides, and then place the printing substrate 9 to be printed on the placement plate 7. The printing substrate 9 is positioned by the two card plates 8. During the placement process, the card plates 8 are touched. The card plates 8 are forced to drive the slider 84 to slide horizontally along the fixing rod 82, thereby driving the spring 83 to deform. After the printing substrate 9 is placed, the spring 83 uses its elastic performance to reset, so that the card plates 8 are always attached to both sides of the printing substrate 9, so that it is limited and fixed, so that during the printing process, it will not shake or deviate, thereby affecting the printing quality.

[0067] Then close the door of the movable cabin 1, operate the motor 32 on the control panel to start, start the motor 32, drive the transmission rod 33 to rotate in the support 31, and the worm 34 outside it also rotates and meshes with the worm gear 35. The worm gear 35 is driven by the force to drive the shaft 36 to rotate along the movable cabin 1, and the rotating gear 37 outside the shaft 36 also rotates and meshes with the tooth plate 38, so that the molding cabin 3 installed on the end side of the tooth plate 38 is then moved horizontally to the left along the top of the movable cabin 1 (for Figure 2The initial position of the forming chamber 3 is at the upper end of the sealing door 2, which is out of position with the movable chamber 1. With the horizontal movement of the movable chamber 1, the transmission rod 33 rotates, and the first pulley 41 outside the transmission rod 33 also rotates and drives the second pulley 43 and the intermediate shaft 44 to rotate through the belt 42, and when the intermediate shaft 44 rotates, the large gear 45 outside the intermediate shaft 44 also rotates and meshes with the small gear 46, and the small gear 46 is driven to rotate the rotating rod 4 in the movable chamber 1, and when the rotating rod 4 rotates, the first helical gear 61 outside the rotating rod 4 also rotates and meshes with the second helical gear 62, and the second helical gear 62 rotates around the support column 5 and is in threaded connection with the screw rod 6, and the screw rod 6 drives the printing substrate 9 at the upper end of the placing plate 7 on the top to rise into the forming chamber, and the gas washing instruction is clicked, and the inert gas is filled until the oxygen content sensor shows that the oxygen content is lower than 100ppm. Then the printing forming body is started to be printed;

[0068] After the printing is completed, the above-mentioned steps are reversely operated to drive the placing plate 7 to descend, and at the same time, the forming chamber 3 moves to the right and moves to the upper end of the sealing door 2 to form a closed state, and then when the printing substrate 9 needs to be replaced, the inert gas in the chamber is in a sealed state, so that part of the inert gas is retained, avoiding excessive waste of the gas and avoiding the need to fill a large amount of inert gas in subsequent printing, thereby reducing the production cost. The staff member draws out the printing substrate 9 and replaces the printing substrate 9, and after the replacement is completed, the above-mentioned operation is repeated, and the forming chamber 3 can be moved above the movable chamber 1, so that the printing can be repeatedly performed.

[0069] Finally, it should be added that the horizontal movement speed of the forming chamber 3 is greater than the lifting speed of the placing plate 7, further, the horizontal movement speed of the forming chamber 3 can be adjusted through the meshing ratio of the worm gear assembly or the rotating gear 37 and the toothed plate 38, and the lifting speed of the placing plate 7 can be adjusted through the meshing ratio of the first helical gear 61 and the second helical gear 62 or the pitch of the screw rod and the second helical gear; further, in order to ensure that the placing plate 7 moves linearly above the top of the movable chamber 1 and is located in the forming chamber 3, the outer diameter of the placing plate 7 is smaller than the inner diameter of the forming chamber 3.

[0070] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by the technical personnel in the industry that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not used to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A cabin structure for a 3D printer, comprising a movable cabin (1) with a sealed door (2), a molding cabin (3) sliding horizontally on the top of the movable cabin (1), and a placement plate (7) sliding vertically inside the molding cabin (3), characterized in that: A toothed plate (38) is fixed on the outer wall of the molding chamber (3), and a rotating gear (37) meshing with the toothed plate (38) is rotatably mounted on the outer wall of the movable chamber (1); The bottom of the placement plate (7) is connected to the bottom of the movable cabin (1) via at least one telescopic rod, and a screw (6) is rotated at the bottom of the placement plate (7), and a second bevel gear (62) is threadedly sleeved on the outer wall of the screw (6); Also includes: a driving member, the driving member braking the rotating gear (37) and the second bevel gear (62) to rotate; A horizontally sliding card plate (8) is provided on the top of the placement plate (7), and a printing substrate (9) is connected in the middle of the card plate (8).

2. The cabin structure of a 3D printer according to claim 1, characterized in that: The driving member includes: a motor (32), the motor (32) being fixed to a side wall of the movable chamber (1), and having a transmission rod (33) fixed to an output end thereof, the transmission rod (33) braking the rotating gear (37) via a worm gear assembly; A rotating rod (4), the rotating rod (4) is parallel to the transmission rod (33) and is arranged in the movable cabin (1), the rotating rod (4) and the transmission rod (33) are connected to each other through a transmission assembly, and the rotating rod (4) is meshed with the second bevel gear (62) for transmission.

3. The cabin structure of a 3D printer according to claim 1, characterized in that: A hollow pillar (5) is fixed to the inner bottom of the movable cabin (1), and the screw (6) is located inside the pillar (5), and the second bevel gear (62) rotates on the top of the pillar (5).

4. The cabin structure of a 3D printer according to claim 2, characterized in that: The worm gear assembly comprises: A worm (34), wherein the worm (34) is hollow and fixedly sleeved on the outer wall of the transmission rod (33); A worm wheel (35) is coaxially fixedly arranged with the rotating gear (37) via a rotating shaft (36), and the worm wheel (35) is meshed with the worm (34) for transmission.

5. The cabin structure of a 3D printer according to claim 2, characterized in that: One end of the rotating rod (4) passes through the side wall of the movable chamber (1) and extends outward, and the transmission assembly includes: A small gear (46), the small gear (46) is fixedly sleeved on the outer wall of the extended end of the rotating rod (4); A large gear (45), the side wall of the movable chamber (1) is rotatably connected to a support shaft (44), the large gear (45) is fixedly sleeved on the outer wall of the support shaft (44), and the small gear (46) and the large gear (45) are meshed for transmission; A belt transmission member is used for transmission between the support shaft (44) and the transmission rod (33).

6. The cabin structure of a 3D printer according to claim 5, characterized in that: The belt transmission member comprises: a first pulley (41), the first pulley (41) being fixedly sleeved on the outer wall of the transmission rod (33); A second pulley (43), the second pulley (43) is fixedly sleeved on the outer wall of the support shaft (44); A belt (42) is connected between the first pulley (41) and the second pulley (43).

7. The cabin structure of a 3D printer according to claim 1, characterized in that: The inner wall of the second bevel gear (62) is provided with an external thread, and the external thread is engaged with the thread of the screw rod (6).

8. The cabin structure of a 3D printer according to claim 2, characterized in that: Two supports (31) are fixed on the outer wall of the movable cabin (1), and the two supports (31) are respectively mounted with the motor (32) and the transmission rod (33).

9. The cabin structure of a 3D printer according to claim 1, characterized in that: A groove (81) is provided on the top of the placement plate (7), a fixing rod (82) is fixed inside the groove (81), a spring (83) is sleeved on the outside of the fixing rod (82), a slider (84) is fixed on the end side of the spring (83), and the slider (84) is fixedly connected to the clamping plate (8).

10. The cabin structure of a 3D printer according to claim 9, characterized in that: The slider (84) is slidably sleeved with the fixing rod (82), and two card plates (8) are provided, and opposite sides of the two card plates (8) are attached to two sides of the printing substrate (9).

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