Raw material drying device for 3D printing plastic part production

Abstract

The utility model provides a 3D printing plastic part production raw material drying device which comprises a drying cylinder, an inclined feeding cylinder penetrates through the top of the drying cylinder, a connecting pipe is connected to the right side of the top of the drying cylinder, a fan is installed at the right end of the drying cylinder, a motor is installed on the left side of the interior of the drying cylinder, and a cam is fixedly installed at the output end of the motor. A limiting rod located below the motor is installed on the left side in the drying cylinder through a rotating shaft, and a rotating disc is rotationally installed in the middle in the drying cylinder. According to the raw material drying device for 3D printing plastic part production, by arranging a spring, a limiting groove, a limiting rod, a cam and other structures, raw materials can be put into the drying cylinder in batches to be dried, the drying effect of the raw materials is improved, by arranging an equipartition blade, a connecting pipe and other structures, the contact area of hot air and the raw materials is increased, and the drying efficiency is improved. Heat conduction and water evaporation speed are promoted, heat energy can be utilized to the maximum extent, energy waste is reduced, and energy utilization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic parts raw material processing, and more specifically, to a raw material drying device for producing 3D printed plastic parts. Background Art

[0002] The raw material drying device for 3D printed plastic parts production refers to equipment used to process the plastic raw materials (usually plastic particles or wires) required for 3D printing; in the 3D printing process, the humidity and temperature of the raw materials have a great impact on the printing quality and efficiency. Therefore, in order to ensure the quality and applicability of the raw materials, the raw materials need to be dried; during the use of existing plastic dryers, due to poor sealing performance, heat loss occurs, which is not conducive to the working environment of the workshop, and prolongs the drying time, greatly reduces the drying efficiency, and thus reduces the production benefits of the enterprise.

[0003] In view of the above problems, regarding the technical problem that the existing plastic dryer has poor sealing performance during use, causing heat loss and reducing the production efficiency of the enterprise, after a lot of searches, a plastic raw material drying equipment with patent number CN209459335U was found, including a drying cylinder, a cone cylinder, a ventilation pipe, a control box and a blower, the lower end of the cone cylinder is connected to the base, a discharge port is opened on one side of the base, a cover plate is arranged on the top of the drying cylinder, a first connecting fixture and a second connecting fixture are arranged on the upper edge of the cover plate, an upper convex ring is arranged on the lower end of the cover plate, a lower convex ring is arranged at the connection between the drying cylinder and the cone cylinder, a cylinder hinge is arranged between the upper end of the cone cylinder and the lower convex ring, and a UN sealing ring is arranged on the upper and lower ends of the drying cylinder; the utility model has a reasonable structural design, and through the design of the cover plate, the upper convex ring, the lower convex ring and the UN sealing ring, the air tightness between the drying cylinder, the cover plate and the cone cylinder is improved, the sealing effect is ensured, and then the heat loss is reduced, the drying time is shortened, and the production efficiency and economic benefits of the enterprise are improved. However, the technical solution provided by the patent has the following problems:

[0004] (1) The equipment directly puts the raw materials into the drying cylinder, causing the raw materials to pile up, and then it takes a long time to dry the raw materials, and the raw material drying efficiency is insufficient;

[0005] (2) The raw materials are dried by hot air through a fan. For raw materials that are not located at different positions inside the drying cylinder, the heat and the raw materials are not in balance, and the heat energy cannot be reused.

[0006] The utility model feeds materials in batches, so that each group of raw materials can be dried, thereby improving the drying efficiency. At the same time, the flow direction of hot air is continuously changed, so that the heat contact of raw materials at different positions of the drying cylinder is increased and the energy utilization efficiency is improved. Utility Model Content

[0007] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides a raw material drying device for producing 3D printed plastic parts.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material drying device for the production of 3D printed plastic parts, comprising: a drying cylinder, an inclined feeding cylinder is passed through the top of the drying cylinder, a connecting pipe is connected to the right side of the top of the drying cylinder, a fan is installed at the right end of the drying cylinder, a motor is installed on the left side of the interior of the drying cylinder, a cam is fixedly installed on the output end of the motor, a limiting rod located below the motor is installed on the left side of the interior of the drying cylinder through a rotating shaft, a turntable is rotatably installed in the middle of the interior of the drying cylinder, four groups of limiting grooves are provided on the outer surface of the turntable, the top of the limiting rod is connected to a spring located between the motor and the turntable, the turntable is connected to a connecting disk through a connecting rod, four groups of collecting hoppers are provided on the outer surface of the connecting disk, a rotating rod is rotatably installed at the lower part of the interior of the drying cylinder, and a plurality of evenly distributed leaves are fixedly installed on the outer surface of the rotating rod,

[0009] A further preferred solution is that a pipe connected to the fan is fixedly installed on the left side of the lower part of the drying cylinder, an electric heating pipe is installed inside the pipe, and a discharge port is penetrated through the bottom end of the drying cylinder.

[0010] A further preferred solution is that a discharge port is formed through the bottom of the feed barrel, and the discharge port cooperates with the connecting disk to realize discharge and stop of the feed.

[0011] A further preferred solution is that the limiting groove and the limiting rod are adapted for use, and the limiting groove is opened in an "L" shape.

[0012] A further preferred solution is that one end of the connecting pipe passes through the top right side of the drying cylinder, and the other end passes through the right end of the drying cylinder and is located above the fan.

[0013] A further preferred solution is that a plurality of the evenly dividing leaves are fixedly installed, and the evenly dividing leaves are arranged in a ring array with the rotating rod as the center.

[0014] A further preferred solution is that a one-way valve is installed inside the other end of the connecting pipe close to the right side of the lock drying cylinder.

[0015] Beneficial effects:

[0016] 1. A spring, a limiting groove, a limiting rod and a cam are provided. After the collecting hopper is filled with enough raw materials, the motor drives the cam to rotate by setting the parameters of the motor, and the cam pushes the limiting rod downward, and the limiting rod pulls the spring to extend, and the limiting rod is separated from the limiting groove. The connecting plate rotates to the right under the gravity of the raw materials, and the raw materials gradually separate from the collecting hopper under the rotation of the connecting plate and their own gravity. After the cam is no longer in contact with the limiting rod, the limiting rod is re-stuck into the rotating limiting groove under the elastic action of the spring. Through the coordinated use of these structures, the raw materials can be put into the drying cylinder in batches for drying, thereby improving the drying effect of the raw materials;

[0017] 2. By providing the equalizing blades and the connecting pipes, the hot air blown out blows the equalizing blades under the cooperation of the fan and the electric heating tube, and the equalizing blades rotate with the assistance of the rotating rod, so that the blown heat is evenly guided and dispersed to the inside of the drying cylinder. Since the hot air can be evenly guided and dispersed to the inside of the drying cylinder, the contact area between the hot air and the raw materials is increased, and the heat conduction and water evaporation rate are promoted. At the same time, the hot air moving upward appears again in the drying cylinder through the connecting pipe, which can maximize the use of heat energy, reduce energy waste, and improve energy utilization efficiency;

[0018] 3. In summary, the raw material drying device for the production of 3D printed plastic parts can put the raw materials into the drying cylinder for drying in batches by providing structures such as springs, limiting grooves, limiting rods and cams, thereby improving the drying effect of the raw materials. By providing structures such as equalizing leaves and connecting pipes, the contact area between the hot air and the raw materials is increased, heat conduction and water evaporation rate are promoted, and thermal energy can be utilized to the greatest extent, thereby reducing energy waste and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the front section structure of the drying cylinder of the utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the turntable and the limiting rod of the utility model.

[0022] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0023] Figure 5 It is a schematic diagram of the split structure of the turntable and the connecting disk of the utility model.

[0024] Figure 1-5In: 1. Drying cylinder; 2. Feeding cylinder; 3. Connecting pipe; 4. Fan; 5. Motor; 6. Cam; 7. Limiting rod; 8. Spring; 9. Turntable; 10. Connecting plate; 11. Limiting groove; 12. Collecting hopper; 13. Turning rod; 14. Equalizing blades; 15. Pipeline; 16. Electric heating tube; 17. Discharge port. DETAILED DESCRIPTION

[0025] The following will be combined with the attached embodiment of the utility model Figure 1-Figure 5 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0026] See also Figure 1-5 In the embodiment of the utility model, a raw material drying device for 3D printing plastic parts production is provided. The top of the drying cylinder 1 is penetrated by an inclined feed cylinder 2, and the bottom of the feed cylinder 2 is penetrated by a discharge port. The design of the inclined feed cylinder 2 can conveniently guide the plastic raw material into the interior of the drying cylinder 1, ensuring that the raw material smoothly enters the interior of the drying device; a fan 4 is installed at the right end of the drying cylinder 1, and the fan 4 can make the air flow inside the drying cylinder 1 to prevent the raw material from caking or sticking during the drying process, and transport air to the interior of the drying cylinder 1; a motor 5 is installed on the left side of the interior of the drying cylinder 1, and the motor 5 can adjust the speed and running time, so as to control the activity of the structure connected thereto; a cam 6 is fixedly installed at the output end of the motor 5, and a limiting rod 7 located below the motor 5 is installed on the left side of the interior of the drying cylinder 1 through a rotating shaft, and the motor 5 drives the cam 6 to rotate. After the cam 6 contacts the limiting rod 7, the cam 6 can push the limiting rod 7 to move downward; a turntable 9 is rotatably installed in the middle of the interior of the drying cylinder 1, and four groups of limiting grooves 11 are opened on the outer surface of the turntable 9, and the top of the limiting rod 7 is connected with a spring located between the motor 5 and the turntable 9. Spring 8, one end of spring 8 and limiting rod 7 are fixedly installed. After limiting rod 7 is not in contact with cam 6, the elastic action of spring 8 realizes the reset function of limiting rod 7. Turntable 9 is connected with connecting plate 10 through connecting rod. Four groups of collecting hoppers 12 are provided on the outer surface of connecting plate 10. Collecting hopper 12 can collect materials in feeding barrel 2. After collecting hopper 12 has enough raw materials, after turntable 9 is not restricted, the weight of raw materials in collecting hopper 12 makes connecting plate 10 drive turntable 9 to rotate clockwise, and the raw materials inside collecting hopper 12 fall to dry Inside the drying cylinder 1; during this period, the outer surface of the connecting disk 10 covers the feeding port of the feeding cylinder 2, and then the feeding cylinder 2 cannot discharge materials before the connecting disk 10 rotates to the next set of collecting hoppers 12; a rotating rod 13 is rotatably installed at the lower part of the interior of the drying cylinder 1, and a plurality of equalizing leaves 14 are fixed on the outer surface of the rotating rod 13. The rotating rod 13 with the equalizing leaves 14 can rotate inside the drying cylinder 1, and through the use of the equalizing leaves 14, the wind blown to the equalizing leaves 14 is dispersed and introduced into the interior of the drying cylinder 1, thereby increasing the contact area between the hot air and the raw materials.

[0027] In the embodiment of the utility model, a pipe 15 connected to the fan 4 is fixedly installed on the left side of the lower interior of the drying cylinder 1. The pipe 15 is connected to the fan 4 to transport air from the fan 4 to the interior of the drying cylinder 1, thereby providing the air flow required for the drying process; an electric heating pipe 16 is installed inside the pipe 15. The electric heating pipe 16 serves as a heating element inside the pipe 15 and can heat the air transmitted through the pipe 15, thereby increasing the air temperature and increasing the heat supply inside the drying cylinder 1; a discharge port 17 is passed through the bottom end of the drying cylinder 1, and the discharge port 17 is provided with a valve. By using the discharge port 17 and the valve in coordination, the discharge speed and amount of the product can be accurately controlled to meet production needs and ensure the smooth progress of the production process.

[0028] In the embodiment of the utility model, a discharge port is penetrated through the bottom of the feed barrel 2, and the discharge port realizes discharge and stopping of material by cooperating with the connecting disk 10. When the connecting disk 10 is rotating, the discharge port is not above the collecting hopper 12. At this time, the discharge port and the surface of the connecting disk 10 are just blocked until the next group of collecting hoppers 12 are located below the discharge port, so that the raw materials can be collected. By continuously changing the collecting hoppers 12 for collection, the raw materials can be introduced in batches.

[0029] In the embodiment of the utility model, the limiting groove 11 and the limiting rod 7 are adapted for use, and the limiting groove 11 is opened in an "L" shape. When the limiting rod 7 is disengaged from the limiting groove 11, the turntable 9 is contacted and constrained, so that the connecting disk 10 can move with the turntable 9. When the limiting rod 7 is reset under the action of the spring 8, the rotating turntable 9 drives another set of limiting grooves 11 to engage with it, so that the turntable 9 and the connecting disk 10 are restricted again.

[0030] In the embodiment of the utility model, one end of the connecting pipe 3 passes through the top right side of the drying cylinder 1, and the other end passes through the right end of the drying cylinder 1, and is located above the fan 4. The design of the connecting pipe 3 can collect the hot air when it moves upward and transport it to the inside of the drying cylinder 1 again, thereby completing the recycling of heat.

[0031] In the embodiment of the utility model, a plurality of evenly-dividing leaves 14 are fixedly installed, and the evenly-dividing leaves 14 are arranged in a circular array with the rotating rod 13 as the center. The plurality of evenly-dividing leaves 14 can effectively optimize the hot air flow mode inside the drying cylinder 1, avoid local dead corners or invalid areas of hot air during the drying process, reduce energy waste, and improve energy utilization efficiency.

[0032] In the embodiment of the utility model, a one-way valve is installed inside the other end of the connecting pipe 3 close to the right side of the lock drying cylinder 1, and the one-way valve can effectively prevent the hot air flow from flowing back during the rising process.

[0033] Working principle: the operator connects the equipment to the power supply and sets the parameters of the motor 5, starts the fan 4 and the electric heating tube 16, and the fan 4 continuously transports air to the inside of the drying cylinder 1. The air contacts the electric heating tube 16 to form hot air. The hot air blows the equalizing blades 14, so that the blown heat is evenly guided and dispersed to the inside of the drying cylinder 1. The operator adds the raw material into the feeding cylinder 2, and the motor 5 drives the cam 6 to rotate. The cam 6 pushes the limiting rod 7 downward, and the limiting rod 7 pulls the spring 8 to extend. The limiting rod 7 is separated from the inside of the limiting groove 11, and the connecting plate 10 drives the turntable 9 and the collecting hopper 12 to rotate to the right under the gravity of the raw material. The raw material gradually separates from the collecting hopper 12 under the rotation of the connecting plate 10 and its own gravity. When the cam 6 is not in contact with the limiting After the rod 7 contacts, the limiting rod 7 is re-stuck into another set of limiting grooves 11 after rotation under the elastic action of the spring 8, completing the binding of the turntable 9 and the connecting disk 10; when the connecting disk 10 is rotating, the discharge port is not above the collecting hopper 12. At this time, the discharge port and the surface of the connecting disk 10 are just blocked until the next set of collecting hoppers 12 is located below the discharge port, and the raw materials are collected. By continuously replacing the collecting hoppers 12 for collection, the raw materials are introduced in batches, and the operation is continuously cyclically operated; the fallen raw materials are evenly contacted with the hot air, which promotes the heat conduction of the raw materials and the evaporation rate of water. The upward moving hot air enters the drying cylinder 1 again through the connecting pipe 3. After drying is completed, the personnel collect the dried raw materials through the discharge port 17.

Claims

1. A raw material drying device for producing 3D printed plastic parts, comprising: The drying cylinder (1) is characterized in that: an inclined feeding cylinder (2) is passed through the top of the drying cylinder (1); a connecting pipe (3) is connected to the right side of the top of the drying cylinder (1); a fan (4) is installed at the right end of the drying cylinder (1); a motor (5) is installed on the left side of the interior of the drying cylinder (1); a cam (6) is fixedly installed at the output end of the motor (5); a limiting rod (7) located below the motor (5) is installed on the left side of the interior of the drying cylinder (1) through a rotating shaft; the interior of the drying cylinder (1) A rotating disc (9) is rotatably installed in the middle, and four groups of limiting grooves (11) are provided on the outer surface of the rotating disc (9). The top of the limiting rod (7) is connected to a spring (8) located between the motor (5) and the rotating disc (9). The rotating disc (9) is connected to a connecting disc (10) through a connecting rod, and four groups of collecting hoppers (12) are provided on the outer surface of the connecting disc (10). A rotating rod (13) is rotatably installed at the lower part of the drying cylinder (1), and a plurality of evenly distributed leaves (14) are fixed on the outer surface of the rotating rod (13).

2. A raw material drying device for producing 3D printed plastic parts according to claim 1, characterized in that: A pipe (15) connected to the fan (4) is fixedly installed on the lower left side of the drying cylinder (1), an electric heating pipe (16) is installed inside the pipe (15), and a discharge port (17) passes through the bottom end of the drying cylinder (1).

3. A raw material drying device for producing 3D printed plastic parts according to claim 1, characterized in that: A discharge port is formed through the bottom of the feed cylinder (2), and the discharge port cooperates with the connection plate (10) to realize discharge and stopping of the material.

4. A raw material drying device for producing 3D printed plastic parts according to claim 1, characterized in that: The limiting groove (11) and the limiting rod (7) are adapted for use, and the limiting groove (11) is in an "L" shape when opened.

5. The raw material drying device for producing 3D printed plastic parts according to claim 1, characterized in that: One end of the connecting pipe (3) passes through the top right side of the drying cylinder (1), and the other end passes through the right end of the drying cylinder (1) and is located above the fan (4).

6. A raw material drying device for producing 3D printed plastic parts according to claim 1, characterized in that: A plurality of the evenly dividing leaves (14) are fixedly installed, and the evenly dividing leaves (14) are arranged in a ring array with the rotating rod (13) as the center.

7. The raw material drying device for producing 3D printed plastic parts according to claim 1, characterized in that: A one-way valve is installed inside the other end of the connecting pipe (3) close to the right side of the lock drying cylinder (1).

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