A reusable split quick-change substrate

Abstract

This application discloses a reusable, detachable, quick-change substrate, including a mounting substrate with multiple self-locking mechanisms on its top and a tray detachably mounted via these mechanisms. The tray has a locking groove at its bottom that matches the self-locking mechanisms. Each self-locking mechanism includes a pressing device and a movable locking device. The movable locking device includes a locking component and an elastic component. When mounting the tray, pressing causes the pressing device to move downwards, pushing the locking component against the circumferential inner wall of the locking groove, while simultaneously compressing the elastic component. An unlocking device is movably mounted within the mounting substrate, with a first unlocking portion at one end and a second unlocking portion at the bottom of the pressing device extending into the mounting substrate. When unlocking the tray, the movable unlocking device causes the first and second unlocking portions to engage, driving the pressing device upwards, lifting the tray, and simultaneously releasing the elastic restoring force of the elastic component, causing the locking component to move away from the circumferential inner wall of the locking groove, thereby quickly unlocking the tray.

Description

Technical Field

[0001] This disclosure relates to the field of 3D printing technology, and more specifically to a reusable, detachable, quick-change substrate. Background Technology

[0002] In the field of metal additive manufacturing (3D printing), especially in selective laser melting (SLM) forming technology, the printing substrate is the fundamental component that supports the formed parts. Traditional 3D printing equipment generally uses a single, integrated substrate, with each substrate typically only suitable for one printing job. When the part size changes or the batch is changed, the entire substrate needs to be removed from the printing chamber and a new substrate needs to be installed, or the original substrate needs to be re-clamped. This whole-board replacement method is cumbersome and time-consuming, severely restricting the continuous production efficiency of the equipment.

[0003] To address the aforementioned issues, some existing technologies have proposed a modular substrate solution. For example, existing patent CN119973141A discloses a quick-change process for metal 3D printing and metal cutting subtractive processing. This solution assembles several trays (equivalent to sub-plates) onto a substrate (equivalent to a mother plate). The trays are detachably connected to the substrate via a first fastener (such as screws), and the substrate is then installed into the printing chamber via a second fastener. After printing, the trays containing the parts are detached from the substrate for subsequent heat treatment, sandblasting, and metal cutting.

[0004] While existing pallets and substrates are detachable, disassembly and assembly require tools and are time-consuming, making it impossible to achieve rapid disassembly and assembly, offline board preparation, and online quick changeover in a streamlined production process, thus limiting continuous production efficiency. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a reusable, detachable, quick-change substrate.

[0006] This application provides a reusable, detachable, quick-change substrate, comprising: Mounting base plate, which is fixedly disposed in the printer compartment; The tray has multiple trays, all of which are detachably mounted on the top of the mounting base plate, and the bottom of the tray is provided with a locking groove; A self-locking mechanism is disposed on the top of the mounting base and corresponds to the locking groove. The self-locking mechanism includes a pressing and pushing device and a movable locking device. The pressing and pushing device extends along a first direction and is movably disposed on the top of the mounting base. It has a tapered section, the diameter of which gradually increases from the end near the mounting base to the end away from the mounting base. Multiple movable locking devices are evenly arranged around the pressing and pushing device. Each movable locking device includes a locking component and an elastic component. The locking component and the circumferential sidewall of the pressing and pushing device are movably abutted. Both ends of the elastic component are fixedly connected to the locking component and the mounting base, respectively. When the tray is installed, the pressing and pushing device moves along the first direction under the pressure of the tray. It pushes multiple locking components radially towards the inner wall of the locking groove through the tapered section, and compresses the elastic component until the ends of multiple locking components away from the pressing and pushing device abut together against the inner wall of the locking groove, thereby locking the tray. An unlocking device is movably disposed inside the mounting base plate. One end of the unlocking device has a first unlocking portion, and the bottom end of the pressing and pushing device extends movably into the mounting base plate and has a second unlocking portion adapted to the first unlocking portion. When the unlocking device is moved closer to the pressing and pushing device, the first unlocking portion and the second unlocking portion cooperate to move the pressing and pushing device along its own axis toward the tray. The locking assembly is moved away from the circumferential inner wall of the locking groove by the elastic restoring force of the elastic assembly, thereby unlocking the tray.

[0007] According to the technical solution provided in the embodiments of this application, the top of the mounting base plate is provided with multiple movable grooves corresponding to multiple self-locking mechanisms, and the top of the mounting base plate is also provided with an end cap, which is fixedly disposed on the top of the mounting base plate and covers the movable grooves. The top of the end cap has a first through hole, and the circumferential sidewall of the end cap has a plurality of second through holes corresponding to the plurality of movable locking devices.

[0008] According to the technical solution provided in the embodiments of this application, the pressure-pushing device includes: A push rod extends along a first direction, with its top end movably penetrating the first through hole and extending above the end cap, and its bottom end movably extending into a movable groove; A push sleeve is fitted onto the outer wall of the push rod. The push sleeve includes a column segment and a conical segment fixedly connected along the first direction. The column segment extends into the movable groove, and the conical segment is located inside the end cap and fixedly connected to the top of the column segment. An elastic pushing assembly is sleeved on the outer wall of the top rod and located between the top rod and the push sleeve. The elastic pushing assembly is used to compress the top rod and generate an elastic restoring force when the top rod moves along the first direction under the pressure of the support plate at the top of the top rod, thereby pushing the push sleeve away from the support plate.

[0009] According to the technical solution provided in the embodiments of this application, the elastic pushing component includes: A first elastic element is sleeved on the outer wall of the top rod, and a boss is provided on the circumferential inner wall of the push sleeve. The bottom end of the first elastic element and the top of the boss are fixedly connected. A locking nut is fixedly sleeved on the outer wall of the top rod, and the bottom of the locking nut is fixedly connected to the top of the first elastic member; Anti-loosening screws are fixedly installed on the outer wall of the top rod and located above the locking nut to prevent the locking nut from loosening.

[0010] According to the technical solution provided in the embodiments of this application, the locking component includes: A centering pin is provided, wherein the side wall of the centering pin near one end of the pressing and pushing device forms a guide surface, the guide surface is adapted to the circumferential outer wall of the tapered segment, and the end of the centering pin away from the pressing and pushing device extends through the second through hole to the outside of the end cap, and is provided with a plurality of first mounting grooves. A ball-head pin is disposed in the first mounting groove, with one end of it extending away from the centering pin to the outside of the first mounting groove, for abutting against the circumferential inner wall of the locking groove when the tray is locked.

[0011] According to the technical solution provided in the embodiments of this application, the elastic component is located between the centering pin and the mounting substrate, and the elastic component includes: A stop pin, which is located inside the end cap and is fixedly disposed at the bottom of the centering pin; The second elastic element extends radially along the pressure-pressing device, and its two ends are respectively fixedly connected to the circumferential inner wall of the end cover and the side wall of the stop pin away from the pressure-pressing device.

[0012] According to the technical solution provided in the embodiments of this application, the mounting substrate is provided with a second mounting groove that corresponds to and communicates with the plurality of movable grooves, and the end of the second mounting groove away from the movable groove is connected to the side wall of the mounting substrate; The unlocking device includes a release button, which is movably disposed in the second mounting groove. One end of the release button, away from the movable groove, extends to the outside of the mounting base. The end of the release button near the movable groove has the guide slope. The extension direction of the guide slope forms an angle with the first direction, with the opening facing the support plate. The bottom end of the top rod has an unlocking groove on its circumferential sidewall. The top inner wall of the unlocking groove forms an unlocking slope that matches the guide slope.

[0013] According to the technical solution provided in the embodiments of this application, the touch-pressing device further includes a bushing, the bushing being fixedly sleeved on the inner circumferential wall of the movable groove, and the outer circumferential wall of the column segment being slidably sleeved on the inner circumferential wall of the bushing.

[0014] According to the technical solution provided in the embodiments of this application, a positioning pin is also fixedly provided on the top of the mounting base plate, and a positioning groove is provided on the bottom of the support plate corresponding to the positioning pin.

[0015] In summary, this technical solution specifically discloses a reusable, detachable, quick-change substrate, including a mounting substrate fixed to the printer's inner compartment. Multiple self-locking mechanisms are provided on the top of the substrate, and a tray is detachably mounted via these mechanisms. A locking groove matching the self-locking mechanisms is provided at the bottom of the tray. The self-locking mechanism includes a pressing and pushing device movably mounted on the top of the mounting substrate along a first direction, and multiple movable locking devices evenly distributed circumferentially around the pressing and pushing device. The pressing and pushing device has a conical section, the diameter of which gradually increases from the end closest to the mounting substrate to the end furthest from the mounting substrate. The movable locking devices include locking components and... The elastic component, locking component, and pressing device are movably abutted against the circumferential sidewall. The two ends of the elastic component are fixedly connected to the locking component and the mounting base plate, respectively. When installing the tray, pressing the tray causes the pressing device to move downward in the first direction. The tapered section pushes multiple locking components to move radially along the pressing device, so that the ends of multiple locking components away from the pressing device abut against the circumferential inner wall of the locking groove. At the same time, the elastic component is compressed, and the elastic restoring force causes the locking components to tend to move closer to the pressing device, which increases the pressure between the locking component and the pressing device and increases the maximum static friction, thus ensuring locking stability.

[0016] An unlocking device is also movably disposed inside the mounting base. One end of the unlocking device has a first unlocking part, and the bottom end of the touch-pressing device extends movably into the interior of the mounting base and has a second unlocking part adapted to the first unlocking part. When unlocking the tray, the unlocking device is moved so that the first unlocking part and the second unlocking part cooperate to drive the touch-pressing device to move up in the first direction, lifting the tray while the elastic restoring force of the elastic component is released, so that the locking component moves away from the circumferential inner wall of the locking groove, thereby unlocking the tray.

[0017] The self-locking mechanism and unlocking device enable rapid installation and replacement of the pallet. Compared with the existing technology that uses screws, this application does not require tools to disassemble and assemble the pallet, and can also achieve online quick replacement, thus improving production efficiency. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a reusable, detachable, quick-change substrate.

[0019] Figure 2 An exploded view of a reusable, detachable, quick-change substrate.

[0020] Figure 3 This is a cross-sectional view of a reusable, detachable, quick-change substrate.

[0021] Figure 4 This is a schematic diagram of the locking plate.

[0022] Figure 5 This is a diagram illustrating different sizes of toddler class combinations.

[0023] The following are the labels in the diagram: 1. Mounting base plate; 2. Support plate; 3. Self-locking mechanism; 4. End cap; 5. Push rod; 6. Push sleeve; 7. First elastic element; 8. Locking nut; 9. Anti-loosening screw; 10. Centering pin; 11. Ball head pin; 12. Stop pin; 13. Second elastic element; 14. Release button; 15. Bushing; 16. Positioning pin; 17. Mounting screw. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] 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.

[0026] like Figures 1 to 3 As shown, a reusable, detachable, quick-change substrate includes: Mounting base plate 1 is fixedly installed in the printer compartment; The tray 2 has multiple trays, all of which are detachably mounted on the top of the mounting base plate 1. The bottom of the tray 2 is provided with a locking groove. The self-locking mechanism 3 is disposed on the top of the mounting base plate 1 and corresponds to the locking groove. The self-locking mechanism 3 includes a pressing and pushing device and a movable locking device. The pressing and pushing device extends along the first direction and is movably disposed on the top of the mounting base plate 1. It has a tapered section, the diameter of which gradually increases from the end near the mounting base plate to the end away from the mounting base plate 1. Multiple movable locking devices are evenly arranged around the pressing and pushing device. The movable locking device includes a locking component and an elastic component. The locking component and the circumferential sidewall of the pressing and pushing device are movably abutted. The two ends of the elastic component are fixedly connected to the locking component and the mounting base plate, respectively. When the tray 2 is installed, the pressing and pushing device moves along the first direction under the pressure of the tray 2. It pushes multiple locking components to move radially towards the inner wall of the locking groove through the tapered section and compresses the elastic component until the ends of multiple locking components away from the pressing and pushing device abut together against the inner wall of the locking groove, thereby locking the tray 2. The unlocking device is movably disposed inside the mounting base plate 1. One end of the unlocking device has a first unlocking part, and the bottom end of the pressing and pushing device extends movably into the mounting base plate 1 and has a second unlocking part adapted to the first unlocking part. When the unlocking device is moved close to the pressing and pushing device, the first unlocking part and the second unlocking part cooperate to move the pressing and pushing device along its own axis toward the support plate 2. The locking component is moved away from the circumferential inner wall of the locking groove by the elastic restoring force of the elastic component, thereby unlocking the support plate 2.

[0027] Specifically, the mounting base plate 1 is fixedly installed in the printer compartment. Optionally, screw holes are provided at all four corners of the mounting base plate 1, and corresponding screw holes are provided in the printer compartment. The mounting base plate 1 is fixedly installed in the printer compartment by bolts, thereby fixing the position of the mounting base plate 1 and providing stable support for the subsequent installation of the tray 2 and the printing of items, ensuring printing accuracy.

[0028] Multiple trays 2 are provided, all of which can be detachably mounted on top of the mounting base plate 1, such as... Figure 1 and Figure 5 As shown, trays 2 can be multiple of the same specification or a combination of different specifications. Each tray 2 can be disassembled to adapt to different printing tasks.

[0029] The bottom of the tray 2 is provided with a locking groove, and the self-locking mechanism 3 is provided on the top of the mounting base plate 1, which corresponds to the locking groove. Therefore, the locking groove can accommodate the self-locking mechanism 3, and when the tray 2 is installed, the self-locking mechanism 3 can lock the tray 2 by locking it with the locking groove.

[0030] The self-locking mechanism 3 can be arranged in an array on the top of the mounting base plate 1. The bottom of the tray 2 is provided with at least one locking groove. At least one locking groove of each tray 2 can correspond to the self-locking mechanism 3. The array-type self-locking mechanism 3 can adapt to multiple trays 2 of a single specification as well as combinations of trays 2 of different specifications, thus improving versatility.

[0031] The self-locking mechanism 3 includes a pressing and pushing device and a movable locking device. The pressing and pushing device has multiple movable locking devices evenly arranged circumferentially. This application uses three as an example. The pressing and pushing device extends along a first direction, and the three movable locking devices extend radially along the pressing and pushing device. The pressing and pushing device has a tapered section, the diameter of which gradually increases from the end closest to the mounting base 1 to the end furthest from the mounting base 1. The movable locking device includes a locking component and an elastic component. The locking component's end near the pressing and pushing device movably abuts against the circumferential sidewall of the pressing and pushing device. The elastic component's two ends are fixedly connected to the locking component and the mounting base 1, respectively. The first direction is... Figure 3 In the vertical direction.

[0032] When installing the tray 2, it is pressed onto the top of the mounting base plate 1. At this time, the locking groove and the self-locking mechanism 3 correspond. The bottom of the locking groove presses against the top of the pressing and pushing device, causing the pressing and pushing device to move downward in the first direction. This pushes the three locking components to move radially along the pressing and pushing device through the outer wall of the cone segment, while compressing the elastic component. The end of the locking component away from the pressing and pushing device continuously approaches the circumferential inner wall of the locking groove until it abuts against the circumferential inner wall of the locking groove. The elastic component is compressed and generates an elastic restoring force. The elastic restoring force causes the locking component to tend to move closer to the pressing and pushing device. However, since the two ends of the locking component abut against the circumferential inner wall of the locking groove, the ... The locking component cannot move in the reverse direction as it is pushed against the inner wall and the pressing device. This increases the pressure in the area where the locking component and the pressing device are in contact, and increases the maximum static friction between them. If the locking component and the pressing device are to move relative to each other, the maximum static friction must be overcome. However, the top of the pressing device is pressed by the support plate 2, and the inner wall of the locking groove is pressed against by the locking component. Therefore, the locking component and the pressing device cannot move relative to each other, thus completing the locking of the support plate 2. The support plate 2 can be installed quickly by pressing, which reduces the installation time and increases convenience compared to the screw method used in the prior art. At the same time, the support plate 2 can be installed without the need for additional tools.

[0033] This application forms a three-point positioning system by uniformly arranging three movable locking devices around the circumference of the pressure-pushing device. The movement of the pressure-pushing device enables the three movable locking devices to move simultaneously and contact and abut against the circumferential inner wall of the locking groove at the same time, so that the locking groove is uniformly pressed around the circumference, ensuring the stability of the locking.

[0034] The mounting base plate 1 is also provided with an unlocking device for quickly unlocking the connection between the tray 2 and the self-locking mechanism 3, so as to achieve the purpose of quickly disassembling the tray 2.

[0035] The unlocking device is movably disposed inside the mounting base plate 1, and has a first unlocking part. The bottom end of the touch-pressing device extends movably into the interior of the mounting base plate 1 and has a second unlocking part that is adapted to the first unlocking part.

[0036] When unlocking tray 2, the unlocking device is moved so that the first unlocking part is close to the second unlocking part until the first and second unlocking parts are engaged. The pressing and pushing device is pushed up in the first direction. Under the elastic restoring force of the elastic component, the locking component is pushed away from the circumferential inner wall of the locking groove. When the pressing and pushing device moves up, it lifts tray 2, thus realizing the quick unlocking of tray 2. Compared with the screw unlocking method in the prior art, this application does not require the use of tools to tighten the screws. It is quick and convenient to disassemble and can realize the online quick disassembly of tray 2 during printing without affecting the printing work. It realizes the online quick change assembly line operation mode and improves production efficiency.

[0037] Furthermore, the top of the mounting base plate 1 is provided with multiple movable grooves corresponding to multiple self-locking mechanisms, and the top of the mounting base plate 1 is also provided with an end cap 4, which is fixedly disposed on the top of the mounting base plate 1 and covers the movable grooves. The top of the end cap 4 has a first through hole, and the circumferential sidewalls of the end cap 4 have multiple second through holes corresponding to multiple movable locking devices.

[0038] Specifically, the top of the mounting base plate 1 is provided with multiple movable grooves, which are arranged in an array and correspond one-to-one with the self-locking mechanism 3. The self-locking mechanism 3 includes an end cap 4, which is fixedly disposed on the top of the mounting base plate 1 and covers the movable grooves. Specifically, the top of the mounting base 1 is provided with three mounting blocks for each movable groove. The three mounting blocks are evenly distributed around the movable groove. A passage space is formed between two adjacent mounting blocks for the locking assembly to pass through. Three mounting screws 17 are evenly arranged around the end cover 4. The mounting screws 17 penetrate the top of the end cover 4 and extend into the mounting block to achieve the installation and fixation of the end cover 4.

[0039] Three second through holes are evenly distributed on the circumferential sidewall of the end cap 4. Each second through hole is connected to a through space, so that the locking assembly passes through the through space and the second through hole.

[0040] The top of the end cap 4 is provided with a first through hole along the first direction. The first through hole, the moving groove, and the locking groove are coaxially arranged. The top of the pressing and pushing device extends through the first through hole to the top of the end cap 4, and is used to contact the bottom of the locking groove when the tray 2 is installed.

[0041] Furthermore, the pressure-activated actuation device includes: Push rod 5 extends along the first direction. The top end of push rod 5 movably passes through the first through hole and extends to the top of end cap 4. The bottom end of push rod 5 movably extends into the movable groove. Push sleeve 6 is sleeved on the outer wall of push rod 5. Push sleeve 6 includes a column section and a cone section fixedly connected along the first direction. The column section extends into the movable groove, and the cone section is located inside the end cover 4 and is fixedly connected to the top of the column section. The elastic pushing component is sleeved on the outer wall of the top rod 5 and located between the top rod 5 and the push sleeve 6. The elastic pushing component is used to compress the top rod 5 and generate an elastic restoring force when the top rod 5 is compressed by the pressure of the support plate 2 and moves in the first direction, thus pushing the push sleeve 6 away from the support plate 2.

[0042] Specifically, the push-pull device includes a push rod 5, which extends along a first direction. The push rod 5 includes an integrally formed and fixedly connected movable rod body and an unlocking block. The top end of the movable rod body is a contact end, which extends through the first through hole along the first direction to the top of the end cover 4. The unlocking block is located at the bottom of the movable rod body and extends into the movable groove. The second unlocking part is located on the unlocking block.

[0043] The outer wall of the push rod 5 is fitted with an elastic pushing component, and the outer wall of the elastic pushing component is movably fitted with a push sleeve 6. When the support plate 2 is installed, the contact end is pressed, causing the push rod 5 to move downward in the first direction, thereby compressing the elastic pushing component and generating an elastic restoring force. Under the action of the elastic restoring force, the push sleeve 6 is pushed downward in the first direction, thereby the conical section of the push sleeve 6 pushes the three locking components radially towards the inner wall of the locking groove along the push rod 5 until they abut against the inner wall of the locking groove. At the same time, the movement of the locking components compresses the elastic component, causing it to generate an elastic restoring force, thereby increasing the maximum static friction between the locking components and the push sleeve 6, and realizing the locking of the support plate 2.

[0044] The push sleeve 6 includes a column segment and a conical segment integrally formed and fixedly connected along a first direction. The column segment is located at the bottom of the conical segment, and the bottom end of the column segment extends into the interior of the movable groove. The unlocking block is located below the column segment. The conical segment is located inside the end cap 4 and fixedly connected to the top of the column segment. The diameter of the conical segment gradually increases from the end closer to the column segment to the end farther away from the column segment. When the support plate 2 presses down on the push rod 5, the push rod 5 moves down along the first direction, compressing the elastic force to push the push sleeve 6 downward. When the locking component moves along the periphery of the push sleeve 6 to the outer wall, the end of the locking component close to the push sleeve 6 moves outward along the periphery of the push sleeve 6. It can also be guided by the conical segment to make the three locking components expand outward together. Finally, the locking components can lock the support plate 2.

[0045] Furthermore, the elastic actuation component includes: The first elastic element 7 is sleeved on the outer wall of the top rod 5. The push sleeve 6 has a boss on its inner circumferential side. The bottom end of the first elastic element 7 and the top of the boss are fixedly connected. Locking nut 8 is fixedly sleeved on the outer wall of top rod 5, and the bottom of locking nut 8 is fixedly connected to the top of first elastic member 7; Anti-loosening screw 9 is fixedly installed on the outer wall of top rod 5 and located above locking nut 8 to prevent locking nut 8 from loosening.

[0046] Specifically, the first elastic element 7 is movably sleeved on the outer wall of the top rod 5, specifically the outer wall of the movable rod body. The locking nut 8 is fixedly sleeved on the outer wall of the top rod 5, specifically the outer wall of the movable rod body, and is located above the first elastic element 7. A boss is fixedly provided on the circumferential inner wall of the push sleeve 6. The top end of the first elastic element 7 is fixedly connected to the bottom of the locking nut 8, and the bottom end is fixedly connected to the top of the boss. Thus, when the top rod 5 is pressed and moves downward in the first direction, it drives the locking nut 8 to move downward, thereby compressing the first elastic element 7. The elastic restoring force generated by the first elastic element 7 acts on the boss, thereby pushing the push sleeve 6 downward, which in turn pushes the three locking components closer to the circumferential inner wall of the locking groove to lock the support plate 2. The first elastic element 7 can be a spring.

[0047] The outer wall of the push rod 5 is fixed with an anti-loosening screw 9, which is located above the locking nut 8. The anti-loosening screw 9 can be fixed to the outer wall of the push rod 5 by welding, thereby preventing the locking nut 8 from loosening.

[0048] Furthermore, the locking assembly includes: The centering pin 10 forms a guide surface on the side wall near the end of the pressing and pushing device. The guide surface is adapted to the circumferential outer wall of the cone segment. The end of the centering pin 10 away from the pressing and pushing device extends through the second through hole to the outside of the end cover 4 and is provided with multiple first mounting grooves. Ball pin 11 is disposed in the first mounting groove, with one end of it away from the centering pin 10 extending out of the first mounting groove, and is used to abut against the circumferential inner wall of the locking groove when locking the support plate 2.

[0049] Specifically, the locking assembly includes a centering pin 10. One end of the centering pin 10 near the tapered section of the push sleeve 6 slides against the circumferential outer wall of the tapered section, and the end of the centering pin 10 near the push sleeve 6 forms a guide surface that matches the circumferential outer wall of the tapered section. Thus, by moving the push sleeve 6, the circumferential outer wall of the tapered section slides against the guide surface, allowing the centering pin 10 to approach the circumferential inner wall of the locking groove.

[0050] The centering pin 10 extends through the second through hole to the outer wall of the end cover 4 at one end away from the push sleeve 6. The side wall of the centering pin 10 away from the push sleeve 6 has two first mounting grooves. The two first mounting grooves are arranged along the first direction. A ball head pin 11 is provided in the first mounting groove. The end of the ball head pin 11 away from the push sleeve 6 extends to the outside of the first mounting groove.

[0051] When the push sleeve 6 moves down, it pushes the centering pin 10 close to the inner wall of the locking groove, which in turn drives the ball head pin 11 close to the inner wall of the locking groove until the ball head pin 11 presses against the inner wall of the locking groove, thus locking the tray 2. The ball head pin 11 reduces the contact area between the locking assembly and the locking groove, which increases the pressure per unit area, thereby increasing the maximum static friction between the locking assembly and the locking groove, ensuring a more stable locking of the tray 2.

[0052] Furthermore, the elastic component is located between the centering pin 10 and the mounting base plate 1, and the elastic component includes: The stop pin 12 is located inside the end cover 4 and is fixedly set at the bottom of the centering pin 10; The second elastic element 13 extends radially along the pressing and pushing device, and its two ends are fixedly connected to the inner wall of the end cover 4 and the side wall of the stop pin 12 away from the pressing and pushing device, respectively.

[0053] Specifically, the stop pin 12 is fixedly disposed at the bottom of the centering pin 10. Optionally, the stop pin 12 extends along the first direction, and its top end is fixedly connected to the centering pin 10; the second elastic member 13 extends radially along the top rod 5 and is located below the centering pin 10, and is located on the side of the stop pin 12 away from the top rod 5. The two ends of the second elastic member 13 are fixedly connected to the stop pin 12 and the circumferential inner wall of the locking groove, respectively; the second elastic member 13 can be a spring.

[0054] Therefore, when the push rod 5 is pressed down, the push sleeve 6 is moved down by the elastic force pushing the component. The outer circumferential wall of the tapered section of the push sleeve 6 pushes the centering pin 10 closer to the inner circumferential wall of the locking groove. The movement of the centering pin 10 causes the stop pin 12 to move, thereby compressing the second elastic element 13. The second elastic element 13 generates an elastic restoring force, which makes the centering pin 10 tend to move closer to the push sleeve 6, increasing the contact pressure between the centering pin 10 and the push sleeve 6, thereby increasing the maximum static friction between the two and improving stability.

[0055] Furthermore, such as Figure 4 As shown, the mounting base plate 1 has a second mounting groove inside that corresponds to and communicates with multiple movable grooves, and the end of the second mounting groove away from the movable grooves is connected to the side wall of the mounting base plate 1. The unlocking device includes a release button 14, which is movably disposed in the second mounting groove. The end of the release button away from the moving groove extends to the outside of the mounting base plate 1. The end of the release button near the moving groove has a guide slope. The extension direction of the guide slope forms an angle with the first direction, with the opening facing the support plate 2. The bottom end of the push rod 5 has an unlocking groove on its circumferential side wall. The top inner wall of the unlocking groove forms an unlocking slope that matches the guide slope.

[0056] Specifically, the mounting base plate 1 has multiple second mounting slots corresponding to multiple movable grooves inside, and one end of the second mounting slot is connected to the movable groove, and the other end is connected to the side wall of the mounting base plate 1.

[0057] The unlocking device includes a release button 14. One end of the release button 14 is located outside the mounting base plate 1, and the other end extends movably into the second mounting groove. The end of the release button near the movable groove has a guide slope. The extension direction of the guide slope and the first direction form an angle between the opening and the tray 2. That is, the distance between the guide slope and the tray 2 gradually decreases from the end near the movable groove to the end away from the movable groove.

[0058] The bottom end of the top rod 5 is provided with an unlocking groove. Specifically, the circumferential side wall of the unlocking block is provided with an unlocking groove, and the top inner wall of the unlocking groove forms an unlocking slope that matches the guide slope.

[0059] When it is necessary to unlock the tray 2, press the release button 14. The release button 14 moves into the moving groove, so that the guide slope enters the unlocking groove and slides with the unlocking slope. Under the guidance of the guide slope, the push rod 5 is forced to move upward along the first direction, so that the circumferential outer wall of the push sleeve 6 cone segment slides with the guide surface of the centering pin 10. Under the elastic restoring force of the second elastic element 13, the centering pin 10 drives the ball head pin 11 away from the circumferential inner wall of the locking groove. Thus, the locking assembly no longer locks the tray 2, and the tray 2 can be removed to achieve quick removal and replacement of the tray 2.

[0060] Furthermore, the pressure-pressing device also includes a bushing 15, which is fixedly sleeved on the inner wall of the movable groove, and the outer wall of the column segment is slidably sleeved on the inner wall of the bushing 15.

[0061] Specifically, the push-pull device also includes a bushing 15, which is fixedly sleeved on the inner wall of the movable groove and located at the top of the movable groove. The circumferential inner wall of the bushing 15 is slidably sleeved with the circumferential outer wall of the column section of the push sleeve 6. When the push rod 5 moves to move the push sleeve 6, the push sleeve 6 can move relative to the bushing 15, which can reduce the wear on the push sleeve 6 and provide a smooth moving channel for the push sleeve 6.

[0062] Furthermore, a positioning pin 16 is fixedly provided on the top of the mounting base plate 1, and a positioning groove is provided on the bottom of the support plate 2 corresponding to the positioning pin 16.

[0063] Specifically, a positioning pin 16 is fixedly provided on the top of the mounting base plate 1, and a positioning groove is provided on the bottom of the tray 2 corresponding to the positioning pin 16. At least two positioning pins 16 are provided for each moving groove, and the at least two positioning pins 16 are evenly distributed along the circumference of the moving groove. Thus, when the tray 2 needs to be locked, by taking the tray 2 and placing it on the top of the mounting base plate 1, the locking groove corresponds to the self-locking mechanism 3, and the positioning groove corresponds to the positioning pin 16. When locking the tray 2, the three moving locking devices simultaneously press against the inner wall of the circumferential locking groove along the circumference, which improves the accuracy of installation and the accuracy of repeated positioning, and effectively ensures the installation stability of the tray 2.

[0064] Working principle: When installing the tray 2, place the tray 2 on top of the mounting base plate 1. The locking groove corresponds to the self-locking mechanism 3, and the positioning groove corresponds to the positioning pin 16. Then press the tray 2, the contact end of the push rod 5 is pressed, and the push rod 5 moves down in the first direction, compressing the first elastic element 7. The elastic restoring force causes the push sleeve 6 to move down. Through the sliding cooperation between the outer wall of the tapered section and the guide surface of the centering pin 10, the three centering pins 10 simultaneously approach the inner wall of the locking groove until the ball head pin 11 abuts the inner wall of the locking groove. When the centering pin 10 moves, it compresses the second elastic element 13, which generates an elastic restoring force that makes the centering pin 10 tend to move closer to the push sleeve 6. This increases the pressure between the centering pin 10 and the push sleeve 6, and increases the maximum static friction between them. At the same time, the push rod 5 is pressed down by the tray 2, so the centering pin 10 and the push sleeve 6 will not move relative to each other, thus locking the tray 2.

[0065] When unlocking tray 2, press release button 14. Release button 14 moves and approaches the inside of the moving groove, so that the guide slope enters the unlocking groove and slides into the unlocking slope. This exerts an upward pushing force on the push rod 5 in the first direction. The push rod 5 moves upward and pulls one end of the first elastic element 7 through the locking nut 8. The elastic restoring force causes the push sleeve 6 to move upward, so that the circumferential outer wall of the tapered section slides into contact with the guide surface of the centering pin 10. The elastic restoring force of the second elastic element 13 pushes the centering pin 10 away from the circumferential inner wall of the locking groove, so that the ball head pin 11 moves away from the circumferential inner wall of the locking groove. The locking assembly no longer locks tray 2, realizing quick release of tray 2. The operation is convenient and can realize online quick change without affecting the normal operation of 3D printing, thus improving production efficiency.

[0066] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A reusable, detachable, quick-change substrate, characterized in that, include: Mounting base plate (1), which is fixedly installed in the printer compartment; The tray (2) has multiple trays, all of which are detachably disposed on the top of the mounting base plate (1), and the bottom of the tray (2) is provided with a locking groove; The self-locking mechanism (3) is disposed on the top of the mounting base plate (1) and corresponds to the locking groove. The self-locking mechanism (3) includes a pressing and pushing device and a movable locking device. The pressing and pushing device extends along a first direction and is movably disposed on the top of the mounting base plate (1). It has a tapered section, the diameter of which gradually increases from one end near the mounting base plate (1) to the other end away from the mounting base plate (1). Multiple movable locking devices are uniformly arranged circumferentially along the pressing and pushing device. Each movable locking device includes a locking component and an elastic component. The locking assembly and the pressing and pushing device move in contact with the circumferential sidewall. The two ends of the elastic assembly are fixedly connected to the locking assembly and the mounting base plate (1), respectively. When the tray (2) is installed, the pressing and pushing device moves along the first direction under the pressure of the tray (2). It pushes multiple locking assemblies to move radially towards the inner wall of the locking groove through the tapered section, and compresses the elastic assembly until the ends of multiple locking assemblies away from the pressing and pushing device jointly abut against the inner wall of the locking groove, thereby locking the tray (2). The unlocking device is movably disposed inside the mounting base plate (1), and has a first unlocking part at one end. The bottom end of the pressing and pushing device extends movably into the mounting base plate (1) and has a second unlocking part adapted to the first unlocking part. When the unlocking device is moved close to the pressing and pushing device, the first unlocking part and the second unlocking part cooperate to make the pressing and pushing device move along its own axis toward the tray (2). The locking component is moved away from the circumferential inner wall of the locking groove by the elastic restoring force of the elastic component, thereby unlocking the tray (2).

2. The reusable, detachable, quick-change substrate according to claim 1, characterized in that, The top of the mounting base plate (1) is provided with multiple movable grooves corresponding to the multiple self-locking mechanisms, and the top of the mounting base plate (1) is also provided with an end cap (4). The end cap (4) is fixedly disposed on the top of the mounting base plate (1) and covers the movable grooves. The top of the end cap (4) is provided with a first through hole, and the circumferential sidewall of the end cap (4) is provided with a plurality of second through holes corresponding to the plurality of movable locking devices.

3. A reusable, detachable, quick-change substrate according to claim 2, characterized in that, The pressure-operating device includes: Top rod (5), the top rod (5) extends along the first direction, the top end of the top rod (5) moves through the first through hole and extends to the top of the end cap (4), and the bottom end of the top rod (5) moves into the movable groove; Push sleeve (6), the push sleeve (6) is sleeved on the outer wall of the top rod (5), the push sleeve (6) includes a column segment and a cone segment fixedly connected along the first direction, the column segment extends into the movable groove, the cone segment is located inside the end cap (4) and is fixedly connected to the top of the column segment; The elastic pushing component is sleeved on the outer wall of the top rod (5) and located between the top rod (5) and the push sleeve (6). The elastic pushing component is used to compress the top rod (5) and generate an elastic restoring force when the top rod (5) is compressed by the pressure of the support plate (2) at the top of the top rod (5) and moves in the first direction, thereby pushing the push sleeve (6) away from the support plate (2).

4. A reusable, detachable, quick-change substrate according to claim 3, characterized in that, The elastic actuation component includes: The first elastic element (7) is sleeved on the outer wall of the top rod (5), and the inner wall of the push sleeve (6) is provided with a boss. The bottom end of the first elastic element (7) and the top of the boss are fixedly connected. Locking nut (8), the locking nut (8) is fixedly sleeved on the outer wall of the top rod (5), and the bottom of the locking nut (8) is fixedly connected to the top of the first elastic member (7); Anti-loosening screw (9) is fixedly installed on the outer wall of the top rod (5) and located above the locking nut (8) to prevent the locking nut (8) from loosening.

5. A reusable, detachable, quick-change substrate according to claim 3, characterized in that, The locking assembly includes: Centering pin (10), the centering pin (10) forms a guide surface on the side wall near one end of the touch-pressing device, the guide surface is adapted to the circumferential outer wall of the cone segment, the centering pin (10) extends through the second through hole to the outside of the end cap (4) and is provided with a plurality of first mounting grooves. A ball head pin (11) is provided in the first mounting groove, with one end of it away from the centering pin (10) extending out of the first mounting groove, for abutting against the circumferential inner wall of the locking groove when the tray (2) is locked.

6. A reusable, detachable, quick-change substrate according to claim 5, characterized in that, The elastic component is located between the centering pin (10) and the mounting base plate (1), and the elastic component includes: The stop pin (12) is located inside the end cap (4) and is fixedly disposed at the bottom of the centering pin (10); The second elastic element (13) extends radially along the pressure pushing device, and the two ends of the second elastic element (13) are respectively fixedly connected to the circumferential inner wall of the end cover (4) and the side wall of the stop pin (12) away from the pressure pushing device.

7. A reusable, detachable, quick-change substrate according to claim 3, characterized in that, The mounting base plate (1) is provided with a second mounting groove that corresponds to and communicates with the plurality of movable grooves, and the end of the second mounting groove away from the movable groove is connected to the side wall of the mounting base plate (1); The unlocking device includes a release button (14), which is movably disposed in the second mounting groove. One end of the release button extends away from the moving groove to the outside of the mounting base plate (1). The end of the release button near the moving groove has the guide slope, which forms the first unlocking part. The extension direction of the guide slope forms an angle with the first direction, with the opening facing the tray (2). The bottom circumferential side wall of the top rod (5) is provided with an unlocking groove. The inner wall of the top of the unlocking groove forms an unlocking slope that matches the guide slope, which forms the second unlocking part.

8. A reusable, detachable, quick-change substrate according to claim 3, characterized in that, The pressure-pushing device also includes a bushing (15), which is fixedly sleeved on the inner wall of the movable groove, and the outer wall of the column segment is slidably sleeved on the inner wall of the bushing (15).

9. A reusable, detachable, quick-change substrate according to claim 1, characterized in that, The mounting base plate (1) is also fixedly provided with a positioning pin (16) on the top, and the bottom of the tray (2) is provided with a positioning groove corresponding to the positioning pin (16).

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