Waste wax collection device and 3D printer

Abstract

The utility model discloses a waste wax collection device and a 3D printer. The waste wax collection device includes a guide tube, a telescopic tube, a transfer waste wax bin and a collection box from top to bottom. The guide tube, the telescopic tube and the transfer waste wax bin are connected. The transfer waste wax bin is provided with a switchable liquid outlet, and the liquid outlet is aligned with the collection box. A small portion of the waste wax is collected and heated by the transfer waste ink bin, and is quickly discharged into the collection box after being collected to a certain extent. This not only satisfies the purpose of the hot wax being able to flatten the collection box, but also reduces the heating power. When replacing the collection box, the transfer waste wax bin is still collecting waste wax, so the collection box can be replaced without stopping the machine, reducing the impact on the printing work. The setting of the telescopic tube can achieve a sealing effect without generating volatile wax, but also reduce the heating length and thus the heating power, and can also realize the up and down movement function.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing, and specifically relates to a waste wax collection device and a 3D printer. Background Art

[0002] 3D printers build three-dimensional models through additive manufacturing methods. Wax 3D printers are a type of additive manufacturing equipment. They use phase-change wax as the printing material, spray high-temperature heated wax onto the printing platform, and build the model by stacking layers. Due to the advantages of high precision and smooth surface of wax-sprayed 3D printed models, wax-sprayed 3D printers are widely used in jewelry, aerospace, engine and other manufacturing industries.

[0003] After the existing wax-based 3D printer finishes printing, there is residual waste wax in the wax cavity and nozzle of the nozzle. The waste wax is usually collected in the following two ways:

[0004] 1. Waste wax flows out from the leveling roller and flows to the collection box through a long guide tube. In order to flatten the waste wax in the collection box, the entire collection box needs to be heated. Since the collection box is large in size, this method has a high heating power, and a large amount of waste wax is heated, resulting in more volatile wax. In addition, the waste wax in the guide tube flows out continuously, and printing needs to be suspended when replacing the collection box.

[0005] 2. Waste wax is collected directly in the leveling roller. When printing, the wax outlet of the leveling roller faces upward to ensure that the waste wax inside does not flow out. When the waste wax in the leveling roller is collected to a certain extent, the leveling roller is turned so that the wax outlet faces downward, and the waste wax inside flows out to the collection box below. In this way, the waste wax is heated, resulting in volatile wax that directly enters the printing environment. In addition, the step of turning the leveling roller to pour out the waste wax will affect the printing process.

[0006] In summary, there are some problems with the existing waste wax collection module:

[0007] 1. The high power of the heating unit and the lack of insulation design lead to high overall energy consumption.

[0008] 2. In order to meet the situation that the leveling roller may move up and down in actual work, a longer guide tube is needed to meet the travel requirements.

[0009] 3. There is no good sealing during the waste wax collection process, and a large amount of wax is heated to produce wax volatile substances that pollute the equipment.

[0010] 4. During the operation of the equipment, waste wax is continuously generated, so printing must be stopped when replacing the collection box. Utility Model Content

[0011] The utility model aims to provide a waste wax collection device and a 3D printer, which adopt a transfer waste wax bin for heating, have low heating energy consumption, and a telescopic pipe connects the guide pipe and the transfer waste wax bin to avoid the generation of volatile wax.

[0012] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0013] A waste wax collection device comprises, from top to bottom, a guide pipe, a telescopic pipe, a transfer waste wax bin and a collection box. The guide pipe, the telescopic pipe and the transfer waste wax bin are connected. The transfer waste wax bin is provided with a switchable liquid outlet, which is aligned with the collection box.

[0014] The waste wax enters the waste wax transfer bin from the guide pipe and the telescopic pipe. Since the structure above the guide pipe moves up and down, the setting of the telescopic pipe can adapt to different distances between the guide pipe and the waste wax transfer bin.

[0015] Furthermore, both ends of the telescopic tube are respectively sealedly connected to the guide pipe and the transfer waste wax bin.

[0016] The connections between the guide tube, telescopic tube and transfer waste wax bin are sealed, so no volatile wax is generated and the printing environment is not affected.

[0017] Furthermore, the waste wax transfer bin is provided with a heating component, which is attached to the bottom of the waste wax transfer bin. The capacity of the waste wax transfer bin is smaller than the capacity of the collection box, and the collection box is not provided with a heating component.

[0018] The heating component heats the waste wax transfer bin to keep the waste wax in the waste wax transfer bin in liquid form for easy outflow. The volume of the waste wax transfer bin is much smaller than the collection box, so the heating power required for the waste wax transfer bin is relatively small. After the waste wax transfer bin collects a certain amount of waste wax, it is poured into the collection box.

[0019] Furthermore, the waste wax transfer bin is provided with a liquid level sensor, which is installed on the top of the waste wax transfer bin.

[0020] The liquid level sensor is used to sense the waste wax liquid level inside the transfer waste wax bin, and the liquid level sensor is triggered when the waste wax liquid level in the transfer waste wax bin rises to a predetermined position.

[0021] Furthermore, the waste wax collecting device includes a sealing head and a moving assembly, the moving assembly is transmission-connected to the sealing head, the sealing head can seal the liquid outlet, and the sealing head realizes opening and closing of the liquid outlet through the moving assembly.

[0022] The sealing head seals the liquid outlet of the transfer waste wax bin. When the liquid level sensor detects that the waste liquid in the transfer waste wax bin reaches a predetermined position, the sealing head moves upward through the moving component to open the liquid outlet, and the waste liquid flows out of the liquid outlet and into the collection box below.

[0023] Furthermore, the moving assembly includes a push rod motor, and a push rod of the push rod motor drives the sealing head to move up and down.

[0024] The push rod motor moves downward to make the sealing head block the liquid outlet, and the push rod motor moves upward to open the liquid outlet.

[0025] Furthermore, the moving assembly includes a push rod mounting plate, the push rod mounting plate and the push rod motor are fixed by a connecting piece, and the push rod mounting plate is fixedly connected to the transfer waste wax bin.

[0026] The push rod motor is fixed on the push rod mounting plate through a connecting piece, and the push rod mounting plate is fixed on the transfer waste wax bin.

[0027] Furthermore, a heating element is provided at one end of the guide tube close to the telescopic tube to ensure that the waste wax will not cool down too much and solidify during the flow process.

[0028] A 3D printer comprises a leveling roller and the aforementioned waste wax collecting device, wherein the leveling roller is connected to a guide pipe of the waste wax collecting device.

[0029] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0030] 1. The collection box is large, and directly heating the collection box will greatly increase the heating power. A small part of the waste wax is collected and heated through the transfer waste ink bin, and when a certain amount is collected, it is quickly discharged into the collection box. This not only satisfies the purpose of the hot wax paving the collection box, but also reduces the heating power. When replacing the collection box, the transfer waste wax bin is still collecting waste wax, so the collection box can be replaced without stopping the machine, reducing the impact on printing work.

[0031] 2. Waste wax drips directly from the top, and volatile wax will affect the printing environment. If it is directly connected with a guide tube, due to the up and down movement of the upper structure, a longer guide tube is required to meet the stroke, and more heating power is required to meet the temperature inside the tube. The setting of the telescopic tube can achieve a sealing effect without generating volatile wax, and can also reduce the heating length and thus reduce the heating power, and can also achieve the up and down movement function. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The utility model is further described below by means of the accompanying drawings.

[0033] Figure 1 The figure is a schematic diagram of the structure of a waste wax collection device.

[0034] Figure 2 It is a schematic diagram of the structure of the guide pipe, telescopic pipe and transfer waste wax bin.

[0035] Figure 3 It is a cross-sectional view of the guide tube, telescopic tube and transfer waste wax bin.

[0036] Figure 4 A schematic diagram of the structure of the mobile component. DETAILED DESCRIPTION

[0037] like Figure 1 The waste wax collection device shown in the figure comprises, from top to bottom, a guide pipe 1, a telescopic pipe 2, a transfer waste wax bin 3 and a collection box 4. The top end of the telescopic pipe 2 is sealedly connected to the guide pipe 1, and the bottom end of the telescopic pipe 2 is sealedly connected to the transfer waste wax bin 3. The collection box 4 is located below the transfer waste wax bin 3 and is used to receive the waste wax discharged from the transfer waste wax bin 3.

[0038] The guide tube 1 is sealed and connected to the leveling roller (not shown) of the 3D printer located above it, and receives the high-temperature waste wax from the upper structure. The entire guide tube 1 does not need to be heated as a whole, and a heating element (not shown) can be set near the telescopic tube 2 of the guide tube to heat one end near the telescopic tube 2 to ensure that the waste wax does not cool down too much during the flow process and solidify.

[0039] The telescopic tube 2 is located between the heating tube and the transfer waste wax bin 3. The guide tube 1 is not directly connected to the transfer waste wax bin 3, but is connected through the telescopic tube 2 to form a sealed environment, which can meet the needs of the upper structure connected to the guide tube 1 to move up and down. The waste wax drips into the transfer waste wax bin 3 through the guide tube 1, and the telescopic tube 2 can ensure that the volatile wax will not go to the external environment.

[0040] like Figure 1 and Figure 3 As shown, a heating paste 5 is provided at the bottom of the waste wax transfer bin 3, and a liquid level sensor 6 is provided at the top of the waste wax transfer bin 3. The heating paste 5 is used to heat the waste wax inside the waste wax transfer bin 3 to ensure that the waste wax is in a liquid state. The volume of the waste wax transfer bin 3 is small, so the heating power of the heating paste 5 can be made relatively small. The liquid level sensor 6 is used to sense the waste wax liquid level inside the waste wax transfer bin 3, and the liquid level sensor 6 is triggered when the waste wax liquid level in the waste wax transfer bin 3 rises to a predetermined position.

[0041] like Figure 2 As shown, a liquid outlet 7 is provided at the bottom of the waste wax transfer bin 3, and the liquid outlet 7 is sealed by a sealing head 8. The sealing head 8 is connected to a push rod motor 9. The push rod motor 9 is fixed to a push rod mounting plate 11 through a connecting piece 10, and the push rod mounting plate 11 is fixedly connected to the waste wax transfer bin 3. When the liquid level rises to a predetermined position to trigger the liquid level sensor 6, the 3D printer control system controls the push rod motor 9 to work, and moves the sealing head 8 to make the waste wax flow out of the waste wax transfer bin 3 and flow into the collection box 4 below.

[0042] The collection box 4 is an ordinary box with a large volume, and does not need to be set with a heating function, and there is no high power consumption. The waste wax in the transfer waste wax bin 3 is discharged at one time, and the discharge speed is fast. The waste wax will not solidify in a short time, so it can flow down and flatten the bottom of the collection box 4, thereby avoiding the previous large collection box 4 because it is not heated, and the waste wax is discharged continuously and uninterruptedly and gradually accumulates in one place.

[0043] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A waste wax collection device, characterized in that: From top to bottom, it includes a guide pipe, a telescopic pipe, a transfer waste wax bin and a collection box. The guide pipe, the telescopic pipe and the transfer waste wax bin are connected. The transfer waste wax bin is provided with a switchable liquid outlet, and the liquid outlet is aligned with the collection box.

2. A waste wax collection device according to claim 1, characterized in that: The two ends of the telescopic tube are respectively sealed and connected to the guide pipe and the transfer waste wax bin.

3. A waste wax collection device according to claim 1, characterized in that: The waste wax transfer bin is provided with a heating component, and the heating component is attached to the bottom of the waste wax transfer bin. The capacity of the waste wax transfer bin is smaller than the capacity of the collection box, and the collection box is not provided with the heating component.

4. A waste wax collection device according to claim 1, characterized in that: The waste wax transfer bin is provided with a liquid level sensor, and the liquid level sensor is installed on the top of the waste wax transfer bin.

5. The waste wax collection device according to claim 1, characterized in that: The waste wax collecting device comprises a sealing head and a moving assembly, wherein the moving assembly is drivingly connected to the sealing head, the sealing head seals the liquid outlet, and the sealing head realizes opening and closing of the liquid outlet through the moving assembly.

6. A waste wax collection device according to claim 5, characterized in that: The moving assembly comprises a push rod motor, and a push rod of the push rod motor drives the sealing head to move up and down.

7. A waste wax collection device according to claim 6, characterized in that: The moving assembly comprises a push rod mounting plate, the push rod mounting plate is fixed to the push rod motor via a connecting piece, and the push rod mounting plate is fixedly connected to the transfer waste wax bin.

8. The waste wax collection device according to claim 1, characterized in that: A heating element is provided at one end of the flow guide tube close to the telescopic tube.

9. A 3D printer, characterized in that: It comprises a leveling roller and the waste wax collecting device according to any one of claims 1 to 8, wherein the leveling roller is connected to the guide pipe of the waste wax collecting device.

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