3D printing drying device and drying method thereof

Abstract

The invention relates to the technical field of 3D printing, and discloses a 3D printing drying device and a drying method.The 3D printing drying device comprises a drying mechanism, the drying mechanism further comprises a drying oven, a gas collecting shell is fixedly connected to the bottom of the inner wall of the drying oven, and four connecting frames are fixedly connected to the top of the inner wall of the drying oven; a worker places a model needing to be dried on a placing plate, then a drying oven is started for heating to dry the model, in the drying process, an electric telescopic rod is started to stretch out, an extrusion plate is pushed to extrude gas in a gas collection shell, the gas can be blown out around the model from a gas outlet pipe, heat around each model flows uniformly, the extrusion plate is continuously moved, and the model is dried. Gas extruded by the extrusion plate can be blocked by the gas blocking plate, and the gas can generate high pressure until the extrusion plate pushes the spring connecting plate to rotate and drives the gas blocking plate to rotate, so that the high-pressure gas is sprayed out towards the fan-shaped frame through the gas spraying pipe, the fan-shaped frame rotates to drive the placing plate to rotate, the position of the model is changed, and the whole model is heated uniformly.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing equipment, and in particular to a 3D printing drying device and a drying method thereof. Background Art

[0002] 3D printing is a technology that uses digital models to manufacture objects. It creates three-dimensional objects by stacking materials layer by layer. It can quickly and flexibly manufacture complex structures and personalized products. By controlling the movement of the printer and the way the material is melted or solidified, objects of various shapes can be created. 3D printing is widely used in manufacturing, prototyping, education, medical care, and art.

[0003] Among them, the model may not be completely cured after printing, and further curing is required to meet the final standards. The common curing method is often to place the model in an oven for curing. During the curing process, a fan is usually used to allow the heat in the curing box to flow to the surface of the model. However, the airflow blown by the fan may be unevenly distributed in the curing box, resulting in excessive heat in some areas and insufficient heat in other areas, making the curing degree of multiple models inconsistent, affecting the curing effect of the model. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a 3D printing drying device, including a drying mechanism, the drying mechanism also includes an oven, the bottom of the inner wall of the oven is fixedly connected to a gas collecting shell, the top of the inner wall of the oven is fixedly connected to four connecting frames, the four connecting frames are grouped in pairs, the side walls of the two groups of connecting frames are slidably connected to two sliding plates, and the parts contained in the four sliding plates are the same; The sliding mechanism comprises a sliding rod slidably connected to the inner wall of the gas collecting shell, a fixing frame is fixedly connected to the top of the gas collecting shell, and a rotating frame is rotatably connected to the outer wall of the fixing frame; The positioning mechanism comprises two fixed plates fixedly connected to the top of the inner wall of the oven, a sliding groove is provided inside the sliding plate 1, and two L-shaped plates are slidably connected to the inner wall of the sliding groove.

[0005] Preferably, the drying mechanism also includes two placement plates rotatably connected to the inner walls of the four sliding plates, suction cups are fixedly connected to the inner walls of the two placement plates, an electric telescopic rod is fixedly connected to the back of the oven, an extrusion plate is slidably connected to the inner wall of the gas collecting shell, the output ends of the side walls of the electric telescopic rod are fixedly connected to the side walls of the extrusion plate, and eight push plates are fixedly connected to the side walls of the extrusion plate. The staff opens the sealed door of the oven and places the 3D printed model to be dried on the placement plate so that the model base and the suction cup fit together. After placement is completed, the sealed door is closed, and then the oven is started to heat up to dry the model. During the drying process, the electric telescopic rod is started to extend to push the extrusion plate to move in the gas collecting shell.

[0006] Preferably, the drying mechanism further comprises two air delivery pipes connected through the top of the gas collecting shell, four air outlet pipes are connected through the outer walls of the two air delivery pipes, eight air jet pipes are connected through the top of the gas collecting shell, and air blocking plates are rotatably connected to the inner walls of the eight air jet pipes to squeeze the gas in the gas collecting shell. The gas will be discharged from the air delivery pipes and blown out around each model through the air outlet pipes, so that the heat around each model flows evenly. When the squeezing plate moves to, such as: Figure 3 As shown on the right side, continuously moving the extrusion plate will allow the air outlet pipe to inhale air, allowing the heat around the model to flow continuously. At this time, the gas squeezed by the extrusion plate will be blocked by the air blocking plate, and the gas will generate high pressure.

[0007] Preferably, the drying mechanism also includes a spring connecting plate fixedly connected to the outer wall of the air blocking plate, and two annular shells are rotatably connected to the inner wall of the sliding plate one, the bottoms of the two annular shells are fixedly connected to a fan-shaped frame, the two annular shells and the inner walls of the placement plate are fixedly connected to arc blocks, and the inner walls of the four arc blocks are slidably connected to two spring blocks until the push plate on the extrusion plate contacts the spring connecting plate, pushing the spring connecting plate to rotate, driving the air blocking plate to rotate, so that the high-pressure gas is discharged and sprayed toward the blades of the fan-shaped frame through the jet pipe, and the rotation of the fan frame drives the annular shell to rotate. Since the protruding part of the spring block on the annular shell is clamped together with the spring block on the placement plate, the placement plate can be driven to rotate through the spring block, thereby making the model rotate intermittently, changing the position of the model, making the model evenly heated as a whole, and the airflow flows evenly around each model, and the model is evenly heated as a whole, avoiding the unevenly distributed airflow blowing on the model in the oven, ensuring the uniformity of curing, and ensuring that each model has a consistent degree of curing.

[0008] Preferably, the sliding mechanism further comprises an H-shaped plate fixedly connected to one side wall of the sliding plate, the side wall of the H-shaped plate is slidably connected to the inner wall of the rotating frame, the inner wall of the rotating frame is slidably connected to the top of the sliding rod, the top of the sliding rod is fixedly connected to a push rod, and the top of the push rod is fixedly connected to an exhaust plug; Among them, the inner walls of the four sliding plates are slidably connected with two spring return rods, and the side walls of the eight spring return rods are fixedly connected to the side walls of the connecting frame. By utilizing the force of the extrusion plate moving, when the extrusion plate moves to contact the sliding rod, since the contact surfaces of the extrusion plate and the sliding rod are both inclined surfaces, when the extrusion plate moves, it will smoothly lift the sliding rod. When the sliding rod moves, it will push the rotating frame to move, so that the rotating frame rotates and tilts, and then pushes the H-shaped plate to move. When the H-shaped plate moves, it will drive the sliding plate to move, pull the spring return rod, and at the same time make the model move horizontally and directly contact the airflow ejected from the outlet pipe. With the intermittent rotation of the model, it is ensured that every part of the model can be exposed to the airflow, so that every position of the model can be evenly in direct contact with the airflow, reducing the dead angles or uneven drying areas that may occur during the drying process, so that the model can be fully cured.

[0009] Preferably, the positioning mechanism further comprises a connecting rod rotatably connected to the outer walls of the two L-shaped plates, the top of the inner wall of the sliding groove is rotatably connected to a rotating disk, the inner wall of the sliding plate 1 is fixedly connected to two suction pipes, the inner walls of the two connecting rods are rotatably connected to the outer wall of the rotating disk, the tops of the two suction pipes are rotatably connected to the bottom of the suction cup, and the force of the movement of the sliding plate 1 is used to drive the sliding plate 1 during its movement, such as: Fig.10 As shown, the L-shaped plate on the right is in contact with the fixed plate, so that the L-shaped plate is blocked by the fixed plate and slides in the sliding groove. When the L-shaped plate on the right moves, the connecting rod on the right rotates, and the rotating disk rotates, thereby rotating the connecting rod on the left, driving the L-shaped plate on the left to move. Since the suction cup is connected to the suction pipe, and the suction cup is in contact with the model base.

[0010] Preferably, the positioning mechanism further comprises two fixing rods fixedly connected to the bottom of the inner wall of the sliding groove, the inner walls of the two L-shaped plates are slidably connected with the sliding plate 2, the side walls of the two sliding plates 2 are slidably connected with the side walls of the fixing rods, and the side walls of the two sliding plates 2 are fixedly connected with a return spring; Among them, the inner walls of the two sliding plates are fixedly connected with air blowing pipes, and the outer walls of the two air blowing pipes are slidably connected to the inner wall of the L-shaped plate. The force of the movement of the L-shaped plate is utilized, and when the L-shaped plate moves, the sliding plate 2 will slide in the L-shaped plate, squeezing the gas in the L-shaped plate and squeezing the reset spring at the same time, so that the reset spring accumulates rebound force, and the gas squeezed in the L-shaped plate will enter the air blowing pipe, and be sprayed to the base of the model through the air blowing pipe, so that the base of the model is blown by additional airflow, and the fine particles of the model base are blown away, so as to avoid the possibility of fine particles in the base of the model just printed.

[0011] A drying method for a 3D printing drying device comprises the following steps: S1: The staff opens the sealed door of the oven and places the 3D printed model to be dried on the placement plate. After placement, the sealed door is closed and the oven is started to heat up and dry the model. S2: Start the electric telescopic rod to extend, push the extrusion plate to move in the gas collecting shell, squeeze the gas in the gas collecting shell, and the gas will be discharged from the gas transmission pipe and blown out around each model through the gas outlet pipe; S3: Continuously moving the extrusion plate will allow the air outlet pipe to inhale air, allowing the heat around the model to flow continuously. At this time, the gas squeezed by the extrusion plate will be blocked by the air blocking plate, and the gas will generate high pressure until the push plate on the extrusion plate contacts the spring connecting plate.

[0012] The present invention has the following beneficial effects: (1) When the present invention is used, the staff opens the sealed door of the oven, places the 3D printed model to be dried on the placement plate, and fits the model base and the suction cup. After placement, the sealed door is closed, and then the oven is started to heat up to dry the model. During the drying process, the electric telescopic rod is extended to push the extrusion plate to move in the gas collecting shell, squeeze the gas in the gas collecting shell, and the gas will be discharged from the gas transmission pipe and blown out around each model through the gas outlet pipe, so that the heat around each model flows evenly. When the extrusion plate moves to, such as: Figure 3 As shown on the right side, continuously moving the extrusion plate will allow the air outlet pipe to inhale air, so that the heat around the model can flow continuously. At this time, the gas squeezed by the extrusion plate will be blocked by the air blocking plate, and the gas will generate high pressure until the push plate on the extrusion plate contacts the spring connecting plate, pushing the spring connecting plate to rotate, driving the air blocking plate to rotate, so that the high-pressure gas is discharged and sprayed toward the blades of the fan-shaped frame through the jet pipe, so that the rotation of the fan-shaped frame drives the annular shell to rotate. Since the protruding part of the spring block on the annular shell is clamped together with the spring block on the placement plate, the placement plate can be driven to rotate through the spring block, so that the model is rotated intermittently, the position of the model is changed, and the model is heated evenly as a whole. The airflow flows evenly around each model and the model is heated evenly as a whole, so as to avoid the uneven distribution of airflow blowing on the model in the oven, ensure the uniformity of curing, and ensure that each model has a consistent degree of curing.

[0013] (2) The present invention utilizes the force of the extrusion plate when it moves to contact the sliding rod. Since the contact surfaces of the extrusion plate and the sliding rod are both inclined surfaces, the extrusion plate will smoothly lift the sliding rod when it moves. When the sliding rod moves, it will push the rotating frame to move, causing the rotating frame to rotate and tilt, thereby pushing the H-shaped plate to move. When the H-shaped plate moves, it will drive the sliding plate to move, pulling the spring reset rod, and at the same time allowing the model to move horizontally and directly contact the airflow ejected from the air outlet pipe. In conjunction with the intermittent rotation of the model, it is ensured that every part of the model can be exposed to the airflow, so that every position of the model can be evenly and directly contacted with the airflow, reducing the dead angles or uneven drying areas that may occur during the drying process, so that the model can be fully cured. In addition, during the rising process of the sliding rod, the exhaust plug is pushed out by the push rod, so that the heat in the oven is intermittently exchanged, avoiding long-term heat exchange that may cause curing defects such as bubbles and cracks caused by temperature fluctuations, and maintaining a relatively stable temperature inside the oven.

[0014] (3) The present invention utilizes the force of the sliding plate moving, which will drive the sliding plate to move, such as: Fig.10 As shown, the L-shaped plate on the right is in contact with the fixed plate, so that the L-shaped plate is blocked by the fixed plate and slides in the sliding groove. When the L-shaped plate on the right moves, the connecting rod on the right rotates, so that the rotating disk rotates, thereby rotating the connecting rod on the left, driving the L-shaped plate on the left to move. Since the suction cup is connected with the suction pipe and the suction cup is in contact with the model base, the suction pipe is in a sealed state at this time. When the L-shaped plate moves, negative pressure is generated in the suction pipe, and the negative pressure is transmitted to the suction cup through the suction pipe, so that the suction cup absorbs the model and fixes the model, avoiding the position of the model from being offset during intermittent movement, thereby ensuring the stability of the model during the curing process.

[0015] (4) The present invention utilizes the force of the L-shaped plate moving. When the L-shaped plate moves, the sliding plate 2 will slide inside the L-shaped plate, squeezing the gas inside the L-shaped plate and squeezing the reset spring at the same time, allowing the reset spring to accumulate resilience. The gas squeezed inside the L-shaped plate will enter the air blowing pipe and be sprayed to the base of the model through the air blowing pipe, so that the base of the model is blown by additional airflow, blowing away the fine particles on the base of the model, thereby avoiding the possibility of fine particles on the base of the newly printed model, resulting in a gap between the model and the placement plate, resulting in the base being difficult to fit tightly with the suction cup, affecting the generation of negative pressure in the suction pipe, thereby ensuring the fixing effect of the model. In conjunction with the rotation of the model, the base of the model can be fully cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the oven of the present invention; Figure 3 It is a cross-sectional schematic diagram of the gas collecting shell when the gas outlet pipe of the present invention is sucking air; Figure 4 It is a cross-sectional schematic diagram of the gas collecting housing of the present invention; Figure 5 It is a cross-sectional schematic diagram of a sliding plate of the present invention; Figure 6 It is an exploded schematic diagram of some components of the drying mechanism of the present invention; Figure 7 For the present invention Figure 6 A is an enlarged schematic diagram; Figure 8 It is a schematic diagram of the overall structure of the present invention; Fig. 9 It is a cross-sectional schematic diagram of the drying mechanism of the present invention; Fig.10 For the present invention Fig. 9 A magnified schematic diagram of B; Fig.11 It is a top view cross-sectional schematic diagram of a sliding plate of the present invention; Fig.12 It is a cross-sectional schematic diagram of a placement table of the present invention; Fig.13 It is a schematic diagram of the working process of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, drying mechanism; 101, oven; 102, gas collecting shell; 103, connecting frame; 104, sliding plate 1; 105, placing plate; 106, electric telescopic rod; 107, squeezing plate; 108, air delivery pipe; 109, air outlet pipe; 110, jet pipe; 111, air blocking plate; 112, spring connecting plate; 113, suction cup; 114, annular shell; 115, fan-shaped frame; 116, arc block; 117, spring clamp block; 2 , sliding mechanism; 201, sliding rod; 202, rotating frame; 203, fixed frame; 204, H-shaped plate; 205, pushing rod; 206, exhaust plug; 207, spring return rod; 3, positioning mechanism; 301, fixed plate; 302, sliding groove; 303, L-shaped plate; 304, connecting rod; 305, rotating disk; 306, suction pipe; 307, fixed rod; 308, sliding plate two; 309, return spring; 310, blowing pipe. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0020] For example, see Figure 1 - Figure 7 The present invention is a 3D printing drying device, comprising a drying mechanism 1, the drying mechanism 1 also comprising an oven 101, a gas collecting shell 102 is fixedly connected to the bottom of the inner wall of the oven 101, four connecting frames 103 are fixedly connected to the top of the inner wall of the oven 101, the four connecting frames 103 are grouped in pairs, and two sliding plates 104 are slidably connected to the side walls of the two groups of connecting frames 103, and the parts contained in the four sliding plates 104 are the same; The sliding mechanism 2 includes a sliding rod 201 slidably connected to the inner wall of the gas collecting shell 102, a fixing frame 203 is fixedly connected to the top of the gas collecting shell 102, and a rotating frame 202 is rotatably connected to the outer wall of the fixing frame 203; The positioning mechanism 3 includes two fixed plates 301 fixedly connected to the top of the inner wall of the oven 101, a sliding groove 302 is opened inside the sliding plate 104, and two L-shaped plates 303 are slidably connected to the inner wall of the sliding groove 302.

[0021] The drying mechanism 1 also includes two placement plates 105 rotatably connected to the inner walls of the four sliding plates 104, and the inner walls of the two placement plates 105 are fixedly connected with suction cups 113. The back of the oven 101 is fixedly connected with an electric telescopic rod 106, and the inner wall of the gas collecting shell 102 is slidably connected with an extrusion plate 107. The output ends at the side walls of the electric telescopic rod 106 are fixedly connected to the side walls of the extrusion plate 107, and eight push plates are fixedly connected to the side walls of the extrusion plate 107. The staff opens the sealed door of the oven 101 and places the 3D printed model to be dried on the placement plate 105 so that the model base and the suction cup 113 fit together. After placement is completed, the sealed door is closed, and then the oven 101 is started to heat up and dry the model. During the drying process, the electric telescopic rod 106 is started to extend to push the extrusion plate 107 to move in the gas collecting shell 102.

[0022] The drying mechanism 1 also includes two air delivery pipes 108 connected through the top of the gas collecting shell 102, and four air outlet pipes 109 are connected through the outer walls of the two air delivery pipes 108. Eight jet pipes 110 are connected through the top of the gas collecting shell 102, and the inner walls of the eight jet pipes 110 are rotatably connected with air blocking plates 111 to squeeze the gas in the gas collecting shell 102. The gas will be discharged from the air delivery pipes 108 and blown out around each model through the air outlet pipes 109, so that the heat around each model flows evenly. When the squeezing plate 107 moves to, such as: Figure 3 When the squeezing plate 107 is on the right side as shown, the gas outlet pipe 109 is allowed to inhale air, so that the heat around the model can flow continuously. At this time, the gas squeezed by the squeezing plate 107 is blocked by the gas blocking plate 111, and the gas will generate high pressure.

[0023] The drying mechanism 1 also includes a spring connecting plate 112 fixedly connected to the outer wall of the air blocking plate 111, two annular shells 114 are rotatably connected to the inner wall of the sliding plate 104, and the bottoms of the two annular shells 114 are fixedly connected to fan-shaped frames 115, and the inner walls of the two annular shells 114 and the placing plate 105 are fixedly connected to arc blocks 116, and the inner walls of the four arc blocks 116 are slidably connected to two spring clamping blocks 117 until the push plate on the extrusion plate 107 contacts the spring connecting plate 112, pushing the spring connecting plate 112 to rotate, driving the air blocking plate 111 to rotate, so that the high-pressure gas is discharged through the jet pipe 1 10 is sprayed toward the blades of the fan-shaped frame 115, so that the fan-shaped frame 115 rotates and drives the annular shell 114 to rotate. Since the protruding part of the spring block 117 on the annular shell 114 is clamped together with the spring block 117 on the placement plate 105, the placement plate 105 can be driven to rotate through the spring block 117, so that the model is rotated intermittently, the position of the model is changed, and the whole model is heated evenly. The airflow flows evenly around each model and the whole model is heated evenly, so that the model in the oven 101 is prevented from being blown by unevenly distributed airflow, thereby ensuring the uniformity of curing and ensuring that the curing degree of each model is consistent.

[0024] For example 2, please refer to Figure 7 - Fig.13 The present invention is a 3D printing drying device. On the basis of the first embodiment, the sliding mechanism 2 further includes an H-shaped plate 204 fixedly connected to the side wall of the sliding plate 104, the side wall of the H-shaped plate 204 is slidably connected to the inner wall of the rotating frame 202, the inner wall of the rotating frame 202 is slidably connected to the top of the sliding rod 201, the top of the sliding rod 201 is fixedly connected to a push rod 205, and the top of the push rod 205 is fixedly connected to an exhaust plug 206; Among them, the inner walls of the four sliding plates 104 are slidably connected to two spring return rods 207, and the side walls of the eight spring return rods 207 are fixedly connected to the side walls of the connecting frame 103. By utilizing the force of the extrusion plate 107 moving, when the extrusion plate 107 moves to contact the sliding rod 201, since the contact surfaces of the extrusion plate 107 and the sliding rod 201 are both inclined surfaces, when the extrusion plate 107 moves, it will smoothly lift up the sliding rod 201, and when the sliding rod 201 moves, it will push the rotating frame 202 to move, so that The rotating frame 202 rotates and tilts, thereby pushing the H-shaped plate 204 to move. When the H-shaped plate 204 moves, it will drive the sliding plate 104 to move, pulling the spring return rod 207, and at the same time allowing the model to move horizontally and directly contact the airflow ejected from the air outlet pipe 109. With the intermittent rotation of the model, it is ensured that every part of the model can be exposed to the airflow, so that every position of the model can be evenly and directly contacted with the airflow, reducing the dead angle or uneven drying area that may appear during the drying process, so that the model can be fully cured.

[0025] The positioning mechanism 3 also includes a connecting rod 304 rotatably connected to the outer walls of the two L-shaped plates 303, a rotating disk 305 is rotatably connected to the top of the inner wall of the sliding groove 302, two suction pipes 306 are fixedly connected to the inner wall of the sliding plate 104, the inner walls of the two connecting rods 304 are rotatably connected to the outer wall of the rotating disk 305, and the tops of the two suction pipes 306 are rotatably connected to the bottom of the suction cup 113. The force of the movement of the sliding plate 104 is used to drive the sliding plate 104 during its movement, such as: Fig.10 As shown, the L-shaped plate 303 on the right side is in contact with the fixed plate 301, so that the L-shaped plate 303 is blocked by the fixed plate 301, and the L-shaped plate 303 slides in the sliding groove 302. When the L-shaped plate 303 on the right side moves, the connecting rod 304 on the right side rotates, and the rotating disk 305 rotates, thereby rotating the connecting rod 304 on the left side, driving the L-shaped plate 303 on the left side to move. Since the suction cup 113 is connected with the suction pipe 306, and the suction cup 113 is in contact with the model base.

[0026] The positioning mechanism 3 also includes two fixing rods 307 fixedly connected to the bottom of the inner wall of the sliding groove 302, and the inner walls of the two L-shaped plates 303 are slidably connected to the second sliding plates 308, and the side walls of the two second sliding plates 308 are slidably connected to the side walls of the fixing rods 307, and the side walls of the two second sliding plates 308 are fixedly connected to the return springs 309; Among them, the inner walls of the two sliding plates 308 are fixedly connected with the air blowing tube 310, and the outer walls of the two air blowing tubes 310 are slidably connected to the inner wall of the L-shaped plate 303. By utilizing the force of the movement of the L-shaped plate 303, when the L-shaped plate 303 moves, the sliding plate 308 will slide in the L-shaped plate 303, squeezing the gas in the L-shaped plate 303 and squeezing the reset spring 309 at the same time, allowing the reset spring 309 to accumulate resilience. The squeezed gas in the L-shaped plate 303 will enter the air blowing tube 310 and be sprayed to the base of the model through the air blowing tube 310, so that the base of the model is blown by additional airflow, and the fine particles of the base of the model are blown away, so as to avoid the presence of fine particles in the base of the model just printed.

[0027] There is no limitation on the number of the above components, and relevant technicians in the field can freely set them according to actual needs, as long as the above components are installed at the connection positions of the corresponding components with equal spacing.

[0028] The drying method of the 3D printing drying device comprises the following steps: S1: The staff opens the sealed door of the oven 101 and places the 3D printed model to be dried on the placement plate 105. After the placement is completed, the sealed door is closed and the oven 101 is started to heat up and dry the model; S2: Start the electric telescopic rod 106 to extend, push the extrusion plate 107 to move in the gas collecting shell 102, squeeze the gas in the gas collecting shell 102, and the gas will be discharged from the gas pipe 108 and blown out around each model through the gas outlet pipe 109; S3: Continuously moving the extrusion plate 107 will allow the air outlet pipe 109 to inhale air, so that the heat around the model can flow continuously. At this time, the gas squeezed by the extrusion plate 107 will be blocked by the air blocking plate 111, and the gas will generate high pressure until the push plate on the extrusion plate 107 contacts the spring connecting plate 112.

[0029] A specific application of this embodiment is: when the present invention is used, the staff opens the sealed door of the oven 101, places the 3D printed model to be dried on the placement plate 105, and fits the model base and the suction cup 113. After the placement is completed, the sealed door is closed, and then the oven 101 is started to heat up to dry the model. During the drying process, the electric telescopic rod 106 is started to extend, and the extrusion plate 107 is pushed to move in the gas collecting shell 102 to squeeze the gas in the gas collecting shell 102. The gas will be discharged from the gas delivery pipe 108 and blown out around each model through the outlet pipe 109, so that the heat around each model flows evenly. When the extrusion plate 107 moves to, such as: Figure 3 When the extrusion plate 107 is on the right side as shown, the extrusion plate 107 is continuously moved, and the air outlet pipe 109 is sucked, so that the heat around the model can flow continuously. At this time, the gas squeezed by the extrusion plate 107 will be blocked by the air blocking plate 111, and the gas will generate high pressure until the push plate on the extrusion plate 107 contacts the spring connecting plate 112, pushing the spring connecting plate 112 to rotate, driving the air blocking plate 111 to rotate, so that the high-pressure gas is discharged and sprayed toward the blades of the fan-shaped frame 115 through the air injection pipe 110, so that the fan-shaped frame 115 rotates and drives the annular shell 11 4 rotation, because the protruding part of the spring block 117 on the annular shell 114 is clamped with the spring block 117 on the placement plate 105, the placement plate 105 can be driven to rotate by the spring block 117, so that the model can be intermittently rotated, the position of the model can be changed, and the whole model can be heated evenly. The airflow flows evenly around each model and the whole model can be heated evenly, so that the model in the oven 101 is prevented from being blown by unevenly distributed airflow, thereby ensuring the uniformity of curing and the consistent degree of curing of each model; When the fan-shaped frame 115 rotates, the electric telescopic rod 106 can be retracted, driving the extrusion plate 107 to move, and continue to squeeze the gas in the gas collecting shell 102 to blow around the model, reciprocatingly extending and retracting the electric telescopic rod 106 until the model is dried; Secondly, when the extrusion plate 107 moves to contact the sliding rod 201, since the contact surfaces of the extrusion plate 107 and the sliding rod 201 are both inclined surfaces, when the extrusion plate 107 moves, it will smoothly lift up the sliding rod 201. When the sliding rod 201 moves, it will push the rotating frame 202 to move, so that the rotating frame 202 rotates and tilts, thereby pushing the H-shaped plate 204 to move. When the H-shaped plate 204 moves, it will drive the sliding plate 104 to move, pull the spring return rod 207, and at the same time make the model move horizontally and directly contact the airflow ejected from the outlet pipe 109. , with the intermittent rotation of the model, ensure that every part of the model can be exposed to the airflow, so that every position of the model can be in direct contact with the airflow evenly, reduce the dead angle or uneven drying area that may appear during the drying process, and allow the model to be fully cured; In addition: during the rising process of the sliding rod 201, the exhaust plug 206 is pushed out by the push rod 205, so that the heat in the oven 101 is intermittently exchanged, avoiding long-term heat exchange, which may cause curing defects such as bubbles and cracks caused by temperature fluctuations, so that the temperature inside the oven is kept relatively stable; When the extrusion plate 107 is separated from the sliding rod 201, the sliding plate 104 is reset by the resilience of the spring reset rod 207; Secondly, the movement of the sliding plate 104 will drive, for example: Fig.10 As shown, the L-shaped plate 303 on the right side is in contact with the fixed plate 301, so that the L-shaped plate 303 is blocked by the fixed plate 301, and the L-shaped plate 303 slides in the sliding groove 302. When the L-shaped plate 303 on the right side moves, the connecting rod 304 on the right side rotates, so that the rotating disk 305 rotates, thereby rotating the connecting rod 304 on the left side, and driving the L-shaped plate 303 on the left side to move. Since the suction cup 113 is connected with the suction pipe 306, and the suction cup 113 is in contact with the model base, the suction pipe 306 is in a sealed state at this time. When the L-shaped plate 303 moves, negative pressure will be generated in the suction pipe 306, and the negative pressure will be transmitted to the suction cup 113 through the suction pipe 306, so that the suction cup 113 adsorbs the model, fixes the model, avoids the position of the model from being offset during the intermittent movement, and ensures the stability of the model during the curing process; Among them, when the spring clamping block 117 moves to contact with the suction pipe 306, since the contact surface between the spring clamping block 117 and the suction pipe 306 is an inclined surface, the spring clamping block 117 will be squeezed by the suction pipe 306, so that the two spring clamping blocks 117 are separated and the rebound force is accumulated. When the two spring clamping blocks 117 are separated, the placement plate 105 can still rotate by relying on the other two spring clamping blocks 117. When the spring clamping block 117 is separated from the suction pipe 306, the two spring clamping blocks 117 are clamped together again under the influence of the rebound force. When the other two spring clamping blocks 117 are in contact with the suction pipe 306, the placement plate 105 can rotate by relying on the spring clamping blocks 117 that are clamped together again. Secondly, when the L-shaped plate 303 moves, the sliding plate 308 will slide in the L-shaped plate 303, squeezing the gas in the L-shaped plate 303 and squeezing the reset spring 309 at the same time, allowing the reset spring 309 to accumulate resilience. The gas squeezed in the L-shaped plate 303 will enter the air blowing pipe 310, and sprayed to the base of the model through the air blowing pipe 310, so that the base of the model is blown by additional airflow, and the fine particles on the base of the model are blown away, so as to avoid the presence of fine particles in the base of the just-printed model, resulting in a gap between the model and the placement plate 105, which may make it difficult for the base to fit tightly with the suction cup 113, affecting the generation of negative pressure in the suction pipe 306, thereby ensuring the fixing effect of the model, and cooperating with the rotation of the model, the base of the model can be fully cleaned.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A 3D printing drying device, comprising a drying mechanism (1), the drying mechanism (1) further comprising an oven (101), the bottom of the inner wall of the oven (101) being fixedly connected to a gas collecting shell (102), the top of the inner wall of the oven (101) being fixedly connected to four connecting frames (103), the four connecting frames (103) being grouped in pairs, the side walls of the two groups of connecting frames (103) being slidably connected to two sliding plates (104), the parts contained in the four sliding plates (104) being the same, and characterized in that: Also includes: A sliding mechanism (2), the sliding mechanism (2) comprising a sliding rod (201) slidably connected to the inner wall of the gas collecting shell (102), a fixing frame (203) fixedly connected to the top of the gas collecting shell (102), and a rotating frame (202) rotatably connected to the outer wall of the fixing frame (203); A positioning mechanism (3), the positioning mechanism (3) comprising two fixed plates (301) fixedly connected to the top of the inner wall of the oven (101), a sliding groove (302) being provided inside the sliding plate 1 (104), and two L-shaped plates (303) being slidably connected to the inner wall of the sliding groove (302).

2. A 3D printing drying device according to claim 1, characterized in that: The drying mechanism (1) further comprises two placement plates (105) rotatably connected to the inner walls of the four sliding plates (104); suction cups (113) are fixedly connected to the inner walls of the two placement plates (105); an electric telescopic rod (106) is fixedly connected to the back of the oven (101); an extrusion plate (107) is slidably connected to the inner wall of the gas collecting shell (102); output ends at the side walls of the electric telescopic rod (106) are fixedly connected to the side walls of the extrusion plate (107); and eight push plates are fixedly connected to the side walls of the extrusion plate (107).

3. A 3D printing drying device according to claim 2, characterized in that: The drying mechanism (1) further comprises two air delivery pipes (108) connected through the top of the air collecting shell (102), four air outlet pipes (109) being connected through the outer walls of the two air delivery pipes (108), eight air injection pipes (110) being connected through the top of the air collecting shell (102), and air blocking plates (111) being rotatably connected to the inner walls of the eight air injection pipes (110).

4. A 3D printing drying device according to claim 3, characterized in that: The drying mechanism (1) further comprises a spring connecting plate (112) fixedly connected to the outer wall of the air blocking plate (111); two annular shells (114) are rotatably connected to the inner wall of the sliding plate (104); the bottoms of the two annular shells (114) are fixedly connected to a fan-shaped frame (115); the inner walls of the two annular shells (114) and the placement plate (105) are fixedly connected to arc blocks (116); and the inner walls of the four arc blocks (116) are slidably connected to two spring clamping blocks (117).

5. A 3D printing drying device according to claim 4, characterized in that: The sliding mechanism (2) further comprises an H-shaped plate (204) fixedly connected to the side wall of the sliding plate 1 (104); the side wall of the H-shaped plate (204) is slidably connected to the inner wall of the rotating frame (202); the inner wall of the rotating frame (202) is slidably connected to the top of the sliding rod (201); the top of the sliding rod (201) is fixedly connected to a push rod (205); the top of the push rod (205) is fixedly connected to an exhaust plug (206); The inner walls of the four sliding plates (104) are all slidably connected to two spring return rods (207), and the side walls of the eight spring return rods (207) are all fixedly connected to the side walls of the connecting frame (103).

6. A 3D printing drying device according to claim 5, characterized in that: The positioning mechanism (3) further comprises a connecting rod (304) rotatably connected to the outer walls of the two L-shaped plates (303); the top of the inner wall of the sliding groove (302) is rotatably connected to a rotating disk (305); the inner wall of the sliding plate 1 (104) is fixedly connected to two suction pipes (306); the inner walls of the two connecting rods (304) are rotatably connected to the outer wall of the rotating disk (305); and the tops of the two suction pipes (306) are rotatably connected to the bottom of the suction cup (113).

7. A 3D printing drying device according to claim 6, characterized in that: The positioning mechanism (3) further comprises two fixing rods (307) fixedly connected to the bottom of the inner wall of the sliding groove (302); the inner walls of the two L-shaped plates (303) are slidably connected to a second sliding plate (308); the side walls of the two second sliding plates (308) are slidably connected to the side walls of the fixing rods (307); and the side walls of the two second sliding plates (308) are fixedly connected to a return spring (309); The inner walls of the two sliding plates (308) are fixedly connected with air blowing pipes (310), and the outer walls of the two air blowing pipes (310) are slidably connected to the inner wall of the L-shaped plate (303).

8. A drying method for a 3D printing drying device, using the 3D printing drying device as claimed in claim 7, characterized in that: The following steps are included: S1: The staff opens the sealed door of the oven (101), places the 3D printed model to be dried on the placement plate (105), closes the sealed door after placement, and then starts the oven (101) to heat up and dry the model; S2: Start the electric telescopic rod (106) to extend, push the extrusion plate (107) to move inside the gas collecting shell (102), and squeeze the gas inside the gas collecting shell (102). The gas will be discharged from the gas transmission pipe (108) and blown out around each model through the gas outlet pipe (109); S3: Continuously moving the extrusion plate (107) will allow the air outlet pipe (109) to inhale air, so that the heat around the model can continue to flow. At this time, the gas squeezed by the extrusion plate (107) will be blocked by the air blocking plate (111), and the gas will generate high pressure until the push plate on the extrusion plate (107) and the spring connecting plate (112) come into contact.

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