Method and system for preventing blowout preventer stack loosening

Abstract

The application discloses a method and system for preventing nozzle loosening. The method for preventing nozzle loosening comprises the following steps: preassembling a nozzle, a throat pipe and a heating block, wherein the nozzle is not connected with the throat pipe; and after the heating block and the nozzle are heated to a rated temperature by a heating device and the heating is stopped, the nozzle is tightened with the throat pipe by using a torque tool with a rated torque. The application solves the technical problem of the nozzle loosening caused by the expansion of the nozzle under the influence of heating, which leads to material leakage, plugging, printing failure and customer complaints.

Description

Technical Field

[0001] This application relates to the field of 3D printing, and more specifically, to a method and system for preventing nozzle loosening. Background Technology

[0002] The inventors discovered that the 3D printer nozzle is screwed into the heating block via threads and then tightened using a torque tool. During machine operation, the nozzle and heating block undergo necessary heating to liquefy the material for printing. Due to thermal expansion, the nozzle may become loose; loose nozzles can lead to problems such as material leakage, nozzle clogging, printing failures, and customer complaints.

[0003] There is currently no effective solution to the problem that nozzles may loosen due to heating and expansion, leading to issues such as material leakage, nozzle clogging, printing failures, and customer complaints. Summary of the Invention

[0004] The main purpose of this application is to provide a method and system for preventing nozzle loosening, so as to solve the problem that nozzles may become loose due to heating and expansion, resulting in material leakage, clogging, printing failure, and customer complaints.

[0005] To achieve the above objectives, according to one aspect of this application, a method for preventing nozzle loosening is provided.

[0006] The method for preventing nozzle loosening according to this application includes: pre-assembling the nozzle, the throat, and the heating block together, wherein the nozzle and the throat are not connected; after heating the heating block and the nozzle to the rated temperature by a heating device and stopping the heating, tightening the nozzle and the throat with a torque tool at the rated torque.

[0007] Furthermore, after pre-assembling the nozzle, throat, and heating block, the process also includes inserting a concentricity fixture from the top of the throat through a feed channel to the bottom of the nozzle.

[0008] Furthermore, heating the heating block and the nozzle together to the rated temperature and then stopping heating by the heating device includes: first, starting the heating device to heat the heating rod set in the groove of the heating block, so that the temperature of the heating block and the nozzle rises; then, using a temperature sensor to detect the actual temperature of the heating block or the nozzle in real time; then, displaying the actual temperature on the display; and finally, turning off the heating device after the actual temperature is determined by the user to have reached the rated temperature.

[0009] Furthermore, heating the heating block and the nozzle together to the rated temperature and then stopping heating by the heating device includes: first, starting the heating device to heat the heating rod set in the groove of the heating block, so that the temperature of the heating block and the nozzle rises; then, using a temperature sensor to detect the actual temperature of the heating block or the nozzle in real time; and then using a processing chip to determine whether the actual temperature has reached the preset rated temperature. If so, the heating device is controlled to stop heating.

[0010] Furthermore, tightening the nozzle and the throat with a torque tool at a rated torque includes: placing the torque tool on the nozzle and tightening the nozzle and the throat counterclockwise at a rated torque; wherein the torque tool is a manual torque wrench or an electric torque wrench.

[0011] To achieve the above objectives, according to another aspect of this application, a method system for preventing nozzle loosening is provided.

[0012] The nozzle loosening prevention system according to this application includes: a heating block, a nozzle and a throat, pre-installed on the heating block, wherein the nozzle and the throat are not connected; a heating device connected to the heating block for heating the heating block and the nozzle together to a rated temperature and then stopping heating; and a torque tool for tightening the nozzle and the throat with a rated torque after the heating device stops heating.

[0013] Furthermore, it also includes: a concentricity fixture for insertion from the top of the throat through the feed channel to the bottom of the nozzle.

[0014] Furthermore, the heating block is provided with a connection hole for pre-installing the nozzle and throat.

[0015] Furthermore, the heating device includes: a heating rod disposed in the groove of the heating block, an on / off switch electrically connected to the heating rod, a display, and a temperature sensor electrically connected to the display.

[0016] Furthermore, the heating device includes: a heating rod disposed in the groove of the heating block, an on / off switch electrically connected to the heating rod, a processing chip electrically connected to the on / off switch, and a temperature sensor electrically connected to the processing chip.

[0017] In this embodiment, a method to prevent nozzle loosening is adopted. The nozzle, throat, and heating block are pre-assembled together, wherein the nozzle and the throat are not connected. After the heating block and the nozzle are heated to the rated temperature by the heating device and the heating device is stopped, the nozzle and the throat are tightened with a torque tool at the rated torque. This achieves the purpose of preventing the nozzle from loosening when it expands due to heating, thereby avoiding defects such as material leakage, head blockage, printing failure, and customer complaints. It also solves the technical problem of material leakage, head blockage, printing failure, and customer complaints caused by the nozzle loosening due to heating expansion. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0019] Figure 1 This is a schematic flowchart of a method for preventing nozzle loosening according to an embodiment of this application;

[0020] Figure 2 This is one of the structural schematic diagrams of a system for preventing nozzle loosening according to an embodiment of this application;

[0021] Figure 3 This is a second schematic diagram of the structure of the anti-nozzle loosening system according to an embodiment of this application;

[0022] Figure 4 This is the third schematic diagram of the structure of the anti-nozzle loosening system according to an embodiment of this application.

[0023] Figure Labels

[0024] 1. Heating block; 2. Nozzle; 3. Throat; 5. Concentricity fixture; 6. Connecting hole; 7. Groove; 8. Heating rod. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0029] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] According to the embodiments of this application, such as Figure 1-4 As shown, a method for preventing nozzle 2 from loosening is provided, the method comprising the following steps:

[0032] Step S101: Pre-assemble the nozzle 2, throat 3 and heating block 1 of the 3D printer together, wherein the nozzle 2 and the throat 3 are not connected;

[0033] Specifically, first, push the nozzle 2 upward from the bottom of the hole on the heating block 1 and insert it into the hole until it can no longer move upward and then stop. At this time, the top of the nozzle 2 is close to the top outlet of the hole. Then, insert the throat tube 3 from the top of the hole and place it on the top of the nozzle 2. The bottom of the throat tube 3 has a threaded part that matches the threaded hole on the top of the nozzle 2. Since the nozzle 2 will expand when heated, if the nozzle 2 is tightened at this time, it will inevitably cause the nozzle 2 to loosen after cooling. Therefore, the throat tube 3 and the nozzle 2 are not tightened here.

[0034] Step S102: After heating the heating block 1 and the nozzle 2 to the rated temperature using the heating device and stopping the heating, tighten the nozzle 2 and the throat 3 with the rated torque using a torque tool.

[0035] After the nozzle 2, throat 3 and heating block 1 are pre-installed, a heating device is needed to heat the heating block 1 and the nozzle 2 to the rated temperature. This rated temperature is the heating temperature required to liquefy the printing material during the 3D printing process. In this embodiment, the real-time temperature of the nozzle 2 or heating block 1 can be preset in the heating device and then judged, or it can be judged manually whether the rated temperature has been reached.

[0036] In one specific embodiment, heating the heating block 1 and nozzle 2 to a rated temperature and then stopping heating via a heating device includes: first, activating the heating device to heat the heating rod 8 located in the groove 7 of the heating block 1, raising the temperature of the heating block 1 and nozzle 2; then, using a temperature sensor to detect the actual temperature of the heating block 1 or nozzle 2 in real time, displaying the actual temperature on a display; and finally, turning off the heating device after a human has determined that the displayed actual temperature has reached the rated temperature. After the heating device is activated, the heating rod 8 is energized and generates heat, which is transferred to the heating block 1 and then to the nozzle 2. A temperature sensor is installed on the nozzle 2 or heating block 1 to periodically detect the temperature of the nozzle 2 and transmit the data back to the display. A person can view the temperature of the nozzle 2 in real time on the display and manually determine the liquefaction temperature of the printing material, using this as the rated temperature. The system then determines whether the current temperature has reached the rated temperature. If it has, or exceeds, the switch is turned off; otherwise, no action is taken. This manual control of the heating device ensures that the nozzle 2 reaches the rated temperature, simulating the liquefaction temperature required for normal printing.

[0037] In one specific embodiment, heating the heating block 1 and nozzle 2 to a rated temperature and then stopping heating via a heating device includes: first, activating the heating device to heat the heating rod 8 located in the groove 7 of the heating block 1, causing the temperature of the heating block 1 and nozzle 2 to rise; then, using a temperature sensor to detect the actual temperature of the heating block 1 or nozzle 2 in real time; and finally, using a processing chip to determine whether the actual temperature has reached the preset rated temperature. If so, the heating device is controlled to stop heating. After the heating device is activated, the heating rod 8 is energized and generates heat, which is transferred to the heating block 1 and then to the nozzle 2. A temperature sensor is installed on the nozzle 2 or heating block 1 to periodically detect the temperature of the nozzle 2 and transmit the data back to the processing chip. The processing chip determines whether the detected actual temperature has reached the preset rated temperature. If so, the heating device is controlled to stop heating; otherwise, no action is taken. This achieves automatic stop control of the heating device, ensuring that the nozzle 2 can reach the rated temperature, simulating the liquefaction temperature required for normal printing by the nozzle 2.

[0038] After the heating device stops working, the nozzle 2 and the throat 3 need to be tightened manually or electrically using a torque tool to the rated torque. In this way, since the nozzle 2 will expand due to the temperature rise, tightening the nozzle 2 and the throat 3 under expansion will ensure that they will not loosen after cooling. In addition, during the printing process, the nozzle 2 will expand due to the temperature rise. At this time, the temperature is similar to that generated when tightening, so the nozzle 2 and the throat 3 will not loosen. This effectively avoids defects such as material leakage, nozzle blockage, printing failure, and customer complaints.

[0039] In this embodiment, preferably, tightening the nozzle 2 and the throat 3 with a torque tool at a rated torque includes: placing the torque tool on the nozzle 2 and tightening the nozzle 2 and the throat 3 counterclockwise with the rated torque; wherein, the torque tool is a manual torque wrench or an electric torque wrench. Tightening and stopping can be done manually or automatically, both requiring only a preset rated torque. For manual tightening and stopping, a mechanical audible alarm type is used, employing the lever principle. When the torque reaches the set torque, a "bang" sound of mechanical contact will be produced. After this, the wrench becomes a dead angle, equivalent to a fixed wrench; further force will result in over-force. For automatic tightening and stopping, a current-type torque wrench is used, determining the torque value based on the change in current during motor tightening. When the predetermined torque is reached, the motor stops working.

[0040] As can be seen from the above description, this application achieves the following technical effects:

[0041] In this embodiment, a method to prevent nozzle 2 from loosening is adopted. The nozzle 2, the throat 3, and the heating block 1 are pre-assembled together, wherein the nozzle 2 and the throat 3 are not connected. After the heating block 1 and the nozzle 2 are heated to the rated temperature by the heating device and the heating is stopped, the nozzle 2 and the throat 3 are tightened with a torque tool at the rated torque. This achieves the purpose of preventing the nozzle 2 from loosening when it expands due to heating, thereby avoiding defects such as material leakage, head blockage, printing failure, and customer complaints. It also solves the technical problem of material leakage, head blockage, printing failure, and customer complaints caused by the loosening of the nozzle 2 due to heating expansion.

[0042] According to an embodiment of the present invention, preferably, after the nozzle 2, the throat 3 and the heating block 1 are pre-assembled together, the method further includes:

[0043] The concentricity fixture 5 is inserted from the top of the throat 3 through the material channel to the bottom of the nozzle 2.

[0044] The concentricity fixture 5 ensures that the pre-assembled throat 3 and nozzle 2 remain in a straight line, avoiding eccentricity. Specifically, the concentricity fixture 5 serves as a positioning standard, and the torque sleeve effectively controls the force, ensuring the stability of the force during installation. Thus, under the positioning of the concentricity fixture 5, the nozzle 2, heating block 1, and throat 3 remain perpendicular, with their centers on the same line.

[0045] According to the embodiments of this application, such as Figure 2-4 As shown, a system for preventing nozzle 2 from loosening is provided, comprising: a heating block 1, which has the function of heating to liquefy the printing material therein; preferably, the heating block 1 has a connection hole 6 for pre-installing the nozzle 2 and the throat 3; the nozzle 2, the throat 3 and the heating block 1 can be pre-installed together through the connection hole 6. The nozzle 2 and the throat 3 are pre-installed on the heating block 1, and the nozzle 2 and the throat 3 are not connected; the nozzle 2 has the function of spraying the liquefied material to the printing part, and the throat 3 has the function of connecting the nozzle 2 and the feed part; thus, when the throat 3 enters the nozzle 2, the printing material therein can be liquefied due to the presence of the heating block 1. A heating device, connected to the heating block 1, is used to heat the heating block 1 and the nozzle 2 to a rated temperature and then stop heating; the heating device has the function of heating the heating block 1; and can stop heating when the rated temperature is reached. A torque tool is used to tighten the nozzle 2 and the throat 3 with a rated torque after the heating device stops heating. The torque tool has the function of tightening the heated nozzle 2 to the throat 3 with a rated torque.

[0046] Specifically, first, push the nozzle 2 upward from the bottom of the hole on the heating block 1 and insert it into the hole until it can no longer move upward and then stop. At this time, the top of the nozzle 2 is close to the top outlet of the hole. Then, insert the throat tube 3 from the top of the hole and place it on the top of the nozzle 2. The bottom of the throat tube 3 has a threaded part that matches the threaded hole on the top of the nozzle 2. Since the nozzle 2 will expand when heated, if the nozzle 2 is tightened at this time, it will inevitably cause the nozzle 2 to loosen after cooling. Therefore, the throat tube 3 and the nozzle 2 are not tightened here.

[0047] After the nozzle 2, throat 3 and heating block 1 are pre-installed, a heating device is needed to heat the heating block 1 and the nozzle 2 to the rated temperature. This rated temperature is the heating temperature required to liquefy the printing material during the 3D printing process. In this embodiment, the real-time temperature of the nozzle 2 or heating block 1 can be preset in the heating device and then judged, or it can be judged manually whether the rated temperature has been reached.

[0048] In one specific embodiment, the heating device includes: a heating rod 8 disposed in the groove 7 of the heating block 1, an on / off switch electrically connected to the heating rod 8, a display, and a temperature sensor electrically connected to the display; the temperature sensor is mounted on the heating block 1 or the nozzle 2. Heating the heating block 1 and the nozzle 2 to a rated temperature and then stopping heating involves: first, activating the heating device to heat the heating rod 8 disposed in the groove 7 of the heating block 1, causing the temperature of the heating block 1 and the nozzle 2 to rise; then, using the temperature sensor to detect the actual temperature of the heating block 1 or the nozzle 2 in real time; then, displaying the actual temperature on the display; and finally, turning off the heating device after the displayed actual temperature has reached the rated temperature as determined by the user. After the heating device is activated, the heating rod 8 is energized and generates heat, which is transferred to the heating block 1 and then to the nozzle 2. A temperature sensor is installed on the nozzle 2 or the heating block 1 to periodically detect the temperature of the nozzle 2 and transmit the data to a display. Personnel can monitor the real-time temperature of the nozzle 2 on the display and manually determine the liquefaction temperature of the printing material, using this as the rated temperature. If the current temperature reaches or exceeds this rated temperature, the switch is turned off; otherwise, no action is taken. This manual control of the heating device ensures that the nozzle 2 reaches its rated temperature, simulating the liquefaction temperature required for normal printing.

[0049] In one specific embodiment, the heating device includes: a heating rod 8 disposed in the groove 7 of the heating block 1, an on / off switch electrically connected to the heating rod 8, a processing chip electrically connected to the on / off switch, and a temperature sensor electrically connected to the processing chip. Heating the heating block 1 and nozzle 2 to a rated temperature and then stopping heating via the heating device includes: first, activating the heating device to heat the heating rod 8 disposed in the groove 7 of the heating block 1, causing the temperature of the heating block 1 and nozzle 2 to rise; then, using the temperature sensor to detect the actual temperature of the heating block 1 or nozzle 2 in real time; and then, using the processing chip to determine whether the actual temperature has reached the preset rated temperature. If so, the heating device is controlled to stop heating. After the switch of the heating device is activated, the heating rod 8 will be energized and generate heat, which will be transferred to the heating block 1 and then to the nozzle 2. A temperature sensor is installed on the nozzle 2 or the heating block 1, which can periodically detect the temperature of the nozzle 2 and transmit the data back to the processing chip. The processing chip determines whether the detected actual temperature has reached the preset rated temperature. If so, the heating device is controlled to stop heating; otherwise, no action is taken. This enables automatic stop control of the heating device, ensuring that nozzle 2 can reach the rated temperature, simulating the liquefaction temperature required when nozzle 2 is printing normally.

[0050] After the heating device stops working, the nozzle 2 and the throat 3 need to be tightened manually or electrically using a torque tool to the rated torque. In this way, since the nozzle 2 will expand due to the temperature rise, tightening the nozzle 2 and the throat 3 under expansion will ensure that they will not loosen after cooling. In addition, during the printing process, the nozzle 2 will expand due to the temperature rise. At this time, the temperature is similar to that generated when tightening, so the nozzle 2 and the throat 3 will not loosen. This effectively avoids defects such as material leakage, nozzle blockage, printing failure, and customer complaints.

[0051] In this embodiment, preferably, tightening the nozzle 2 and the throat 3 with a torque tool at a rated torque includes: placing the torque tool on the nozzle 2 and tightening the nozzle 2 and the throat 3 counterclockwise with the rated torque; wherein, the torque tool is a manual torque wrench or an electric torque wrench. Tightening and stopping can be done manually or automatically, both requiring only a preset rated torque. For manual tightening and stopping, a mechanical audible alarm type is used, employing the lever principle. When the torque reaches the set torque, a "bang" sound of mechanical contact will be produced. After this, the wrench becomes a dead angle, equivalent to a fixed wrench; further force will result in over-force. For automatic tightening and stopping, a current-type torque wrench is used, determining the torque value based on the change in current during motor tightening. When the predetermined torque is reached, the motor stops working.

[0052] Preferably, it further includes a concentricity fixture 5, used to insert from the top of the throat 3 through the material channel to the bottom of the nozzle 2. The concentricity fixture 5 ensures that the pre-assembled throat 3 and nozzle 2 remain in a straight line, avoiding eccentricity. Specifically, using the concentricity fixture 5 as a positioning standard, the torque sleeve can effectively control the force, ensuring the stability of the force during the installation process, thereby keeping the nozzle 2, heating block 1, and throat 3 perpendicular and centered on the same line under the positioning of the concentricity fixture 5.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for preventing nozzle loosening, characterized in that, include: The nozzle, throat, and heating block of the 3D printer are pre-assembled together, wherein the nozzle is not connected to the throat. The pre-assembly of the nozzle, throat, and heating block also includes: The concentricity fixture is inserted from the top of the throat through the material channel to the bottom of the nozzle; After heating the heating block and the nozzle to the rated temperature by the heating device and stopping the heating, the nozzle and the throat are tightened with the rated torque using a torque tool. The rated temperature is the heating temperature required in the 3D printing process to liquefy the printing material. Heating the heating block and the nozzle to a rated temperature using a heating device and then stopping the heating includes: First, the heating device is activated to heat the heating rod set in the groove of the heating block, so that the temperature of the heating block and the nozzle rises. Then, a temperature sensor is used to detect the actual temperature of the heating block or the nozzle in real time, and the actual temperature is displayed on the display. Finally, the heating device is turned off after the displayed actual temperature reaches the rated temperature.

2. The method for preventing nozzle loosening according to claim 1, characterized in that, Heating the heating block and the nozzle to a rated temperature using a heating device and then stopping the heating includes: First, the heating device is activated to heat the heating rod located in the groove of the heating block, causing the temperature of the heating block and nozzle to rise. Then, a temperature sensor is used to detect the actual temperature of the heating block or nozzle in real time. Finally, the processing chip determines whether the actual temperature has reached the preset rated temperature. If so, the heating device is controlled to stop heating.

3. The method for preventing nozzle loosening according to claim 1, characterized in that, Tightening the nozzle to the throat using a torque tool at rated torque includes: Place a torque wrench over the nozzle and tighten the nozzle and the throat counterclockwise with the rated torque; wherein the torque wrench is a manual torque wrench or an electric torque wrench.

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