3D printing equipment and method for absorbable bone implants

Abstract

The present invention relates to the technical field of 3D printing, and more specifically to a 3D printing device and method for absorbable bone implants, comprising a machine base, a printing mechanism installed on the machine base, a feeding mechanism installed on the feeding mechanism, a pushing mechanism installed on the feeding mechanism, a limiting mechanism installed on the pushing mechanism, a locking mechanism installed on the pushing mechanism, and a protective mechanism installed on the printing mechanism; the printing mechanism and the feeding mechanism are conducive to 3D printing of bone materials; the pushing mechanism is operated by the locking mechanism, so that the printed blank can be quickly pushed out for unloading and replacement of placement parts; the engaging mechanism is operated by the driving of the pushing mechanism, which is conducive to lifting the blank during unloading; the protective mechanism is operated under the action of the pushing mechanism, which is conducive to the protective mechanism locking and locking the reset printing mechanism, so as to prevent the printing mechanism from moving due to misoperation and causing accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing device and method for absorbable bone implants. Background Art

[0002] With the advancement of medical technology, polylactic acid is a green polymer material with good biocompatibility with humans and most animals and is biodegradable. It also has an elastic modulus close to that of human and most animal bones. Fused deposition modeling is an additive manufacturing process with increasing forming accuracy and surface quality, and has met the manufacturing requirements of bone implants. Through 3D printing technology, polylactic acid materials are subjected to fused deposition modeling and quickly manufactured into personalized absorbable bone implants.

[0003] However, when printing blanks, traditional 3D printers install a pad on the table so that the blanks are piled on the pad. When unloading after printing, it is inconvenient to pick up the blanks and the pad. At the same time, a new pad needs to be replaced and clamped after unloading. The back and forth operation is very cumbersome, which reduces production efficiency. In addition, it is inconvenient to limit the protection of the printer equipment during the unloading process. When unintentional operation occurs, the printer will work, which may cause accidents when unloading. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a 3D printing device and method for absorbable bone implants.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a 3D printing equipment for absorbable bone implants, including a machine base, a printing mechanism is installed on the machine base, a feeding mechanism is installed on the machine base, a pushing mechanism is installed on the feeding mechanism, a limiting mechanism is installed on the pushing mechanism, a locking mechanism is installed on the pushing mechanism, a locking mechanism is connected to the pushing mechanism, and a protective mechanism is installed on the printing mechanism.

[0006] Specifically, the printing mechanism includes a frame, the frame is detachably mounted on the base, the frame is cooperatively connected to a printing assembly, two groups of support seats are mounted on the base, guide rails are mounted on the two groups of support seats, a table panel is provided on the base, and the table panel is slidably connected to the top of the base via two guide rails.

[0007] Specifically, the discharge mechanism includes a storage groove, the table panel is provided with a storage groove, the storage groove is a "convex" shaped structure, a bottom plate is provided inside the storage groove, the bottom plate is slidably connected to the inside of the storage groove through a plurality of telescopic springs, a plurality of pads are stacked on the bottom plate, and the pads are slidably connected to the inside of the storage groove.

[0008] Specifically, the material pushing mechanism includes a sliding rod. The top sides of the inner parts at both ends of the table board are slidably connected with the sliding rod. A push plate is slidably connected to the top of the table board. Both ends of the push plate are connected to the side walls of one ends of the two sliding rods through connecting plates. The connecting plates are slidably connected to the inner side of the table board. The other ends of the two sliding rods extend to the outside of the table board. A cross plate is slidably connected to the table board. The other ends of the two sliding rods are respectively vertically connected to one sides of both ends of the cross plate. A plurality of pushing blocks are installed at the bottom of the push plate. The top of the pushing block is slidably connected to the inside of the push plate through a compression spring. The pushing block is of a trapezoidal structure. One side of the pushing block abuts against one side of one of the backing plates. A handle is installed at the center of the cross plate. The handle is of a "U" shaped structure.

[0009] Specifically, the limiting mechanism includes a limiting block. Limiting blocks are respectively installed inside both ends of the table board. The limiting block is slidably connected to the inside of the table board through an extrusion spring. The limiting block is of a trapezoidal structure. A guide wheel is rotatably connected to the top of the limiting block through a rotating shaft. The guide wheel abuts against the bottom of the sliding rod. A limiting groove is provided at the bottom side of one end of the two sliding rods. Both the limiting block and the limiting groove are of a trapezoidal structure.

[0010] Specifically, the locking mechanism includes a latch. Symmetrical latches are slidably connected to the inside of both ends of the cross plate. The latch is of an "L" shaped structure. Symmetrical lock grooves are provided inside both sides of the table board. One end of the latch extends into the lock groove. The other end of the latch extends to the outside of the cross plate. A push button is installed at the other end of the latch. The push button is slidably connected to the outside of the cross plate through the latch.

[0011] Specifically, two protrusions are installed inside the cross plate. The protrusions are slidably connected to the inside of the cross plate through a pressing spring. One end of the protrusion is of a hemispherical structure. Two grooves are provided on the side walls of the two latches. One end of the protrusion abuts against the inside of one of the grooves.

[0012] Specifically, the engaging mechanism includes a top block. A plurality of symmetrical top blocks are installed inside the two sliding rods. The top block is slidably connected to the inside of the sliding rod under the action of a抵触 spring. One end of the plurality of top blocks is of a hemispherical structure. One ends of the plurality of top blocks extend to the outside of the sliding rod and abut against the inner side of the table board. A plurality of driving rods are respectively provided inside the two sliding rods. The driving rod is rotatably connected to the inside of the sliding rod through a movable groove and a fixed shaft. The top of the driving rod is rotatably connected to the other end of the top block through another movable groove. A plurality of clamping plates are slidably connected to the inner sides of the bottoms of the two sliding rods. The bottom of the driving rod is rotatably connected to one end of the clamping plate. The clamping plate is of a trapezoidal structure. The other end of the clamping plate is located on one side of the backing plate. An anti-slip pad is installed at the top of the clamping plate.

[0013] Specifically, the protection mechanism includes a transmission rod, two transmission rods are installed inside one end of the table panel, and the transmission rod is longitudinally slidably connected to the inside of the table panel under the action of a control spring, and the tops of the two transmission rods are rotatably connected to drive wheels respectively, and the drive wheels extend to the outside of the table panel and contact with the cross plate, and two locking pins are installed at the bottom of one end of the table panel, and the locking pin is longitudinally slidably connected to the inside of the table panel through a movable spring, and the top of the locking pin is a semicircular structure, and a slot is provided on the top side of one end of the guide rail, and the bottom of the locking pin is located on the top side of the slot, and the opposite sides of the bottom of the two transmission rods are fixedly connected to drive blocks, and the drive block is a triangular structure, and two extrusion rods are connected to the inside of the table panel for transverse sliding, and pressure wheels are rotatably connected at both ends of the extrusion rods, one of the pressure wheels contacts one side of the top of the lock pin, and the other pressure wheel contacts one side of the driving block.

[0014] An operating method of a 3D printing device for an absorbable bone implant comprises the following steps:

[0015] S1: First, the printing mechanism and the machine base are installed together to perform 3D printing, and the printed blanks are stacked and unloaded on the unloading mechanism;

[0016] S2: Then the locking mechanism is driven to enable the push mechanism to pull and work, so that the printed blank on the discharge mechanism can be quickly pushed out and unloaded, so as to prepare for subsequent printing and processing. The limit mechanism is used to protect the push mechanism from sliding when it is pulled, so as to prevent the push mechanism from slipping;

[0017] S3: When unloading, the clamping mechanism is driven to work by the pushing mechanism, so that the clamping mechanism is clamped against the unloading mechanism, so that the blank is lifted and pulled out when unloading;

[0018] S4: The protection mechanism is activated by driving the push mechanism, so that the protection mechanism engages and locks the reset printing mechanism to prevent the printing mechanism from moving due to misoperation and causing an accident.

[0019] The beneficial effects of the present invention are:

[0020] (1) The 3D printing equipment and method of absorbable bone implants described in the present invention facilitate the realization of 3D printing function through the coordinated installation of the printing mechanism, and facilitate the placement of printed blanks and good material unloading through the action of the material unloading mechanism, that is: the machine base facilitates the installation of the frame, and the frame facilitates the connection of the printing assembly, the table panel facilitates the stacking of blanks during printing, the table top can slide under the action of the transmission assembly and the guide rail, and the 3D printing work is realized under the action of the printing assembly, and the storage groove facilitates the placement of multiple stacked pads, the two side edges of the top pad abut against the inner side of the machine base, the pad is conducive to the stacking of blanks during 3D printing, and the unloading work is facilitated by pulling out the top pad, and the next pad is abutted and lifted under the action of the bottom plate and the telescopic spring, thereby realizing rapid replacement of the pad, facilitating subsequent printing work, and more convenient operation.

[0021] (2) The 3D printing equipment and method of absorbable bone implants described in the present invention facilitates the pulling operation of the push mechanism through the driving of the locking mechanism, which is conducive to the rapid pushing out of the printed blank and replacing the placement parts. The limiting mechanism is conducive to the sliding protection of the push mechanism, that is, the engagement of the latch pin with the inside of the lock groove is conducive to limiting the horizontal plate so that the horizontal plate will not be pulled out. By pushing the push buckle, the push buckle drives the latch pin to slide out of the lock groove, which facilitates the horizontal plate to slide and pull out on the table panel to achieve the unloading operation. The protrusion is caused to contact with the inside of the groove under the action of the pressing spring, which plays a role in assisting the locking of the latch pin. By pushing the latch pin, since one end of the protrusion is a hemispherical structure, the groove contacts the protrusion to get rid of the action of the pressing spring and shrinks, thereby facilitating the sliding of the latch pin. After the latch pin slides out of the lock groove, the protrusion contacts with the inside of another groove, which is conducive to the latch pin not being easy to loosen after driving, and can achieve better locking effect. The installation of the slide rod and the connecting plate is conducive to pulling by the handle. The horizontal plate enables the push plate to slide on the top of the storage slot, and the multiple push blocks resist the pad plate, so that when the push plate is pulled out, the top pad is pushed out to unload the material. After taking out the top pad and the blank, the push plate is pushed back to slide, and the push block is resisted and shrinks under the action of the compression spring, and the push block slides on the pad. When the push plate slides to the initial position, the push block slides out of one end of the pad, and the top plate rises under the resistance of the bottom plate to facilitate printing and stacking, so that the push block is on one side of the pad, which is convenient for subsequent pushing of materials. Under the action of the extrusion spring, the guide wheel on the limit block contacts the sliding rod, which is beneficial to prevent the sliding rod from causing wear when sliding. After the sliding rod slides to a certain position, the limit groove is located at the top of the limit block. Under the action of the extrusion spring, the limit block slides into the limit groove and engages, which is beneficial to limit the sliding rod and prevent it from being pulled out, thereby preventing the sliding rod from slipping. By pushing the sliding rod, since the limit block and the limit groove are both trapezoidal structures, the side wall of the limit groove contacts and contracts with the limit block, thereby facilitating the sliding rod to slide back and reset.

[0022] (3) The 3D printing equipment and method of absorbable bone implants described in the present invention, through the driving of the pushing mechanism to make the locking mechanism work, is conducive to the resistance and locking of the discharge mechanism, so that the blank is lifted up when the material is unloaded, which is convenient for unloading and taking. That is: through the action of the resistance spring, multiple top blocks are made to resist the inner side of the table panel, and the top block resistance driving rod pulls the card plate under the action of the movable groove, so that the card plate is stored inside the sliding rod. When the sliding rod is pulled out, the top block slides out under the action of the resistance spring, and the top block pulls the driving rod to swing. Under the action of the movable groove and the fixed shaft, the driving rod is used to resist and push out the card plate by the lever principle, and the card plate slides out of the outer side of the sliding rod and resists the bottom side of the pad plate, which is conducive to supporting and lifting the pad plate through multiple card plates, so that the pad plate will not collapse when unloading, which is convenient for unloading work. The sliding rod slides into the interior of the table panel, the top block is resisted and contracted, and the card plate is contracted and reset, which is convenient for the subsequent pad plate to rise and receive the material.

[0023] (4) The 3D printing equipment and method for absorbable bone implants described in the present invention enable the protective mechanism to work under the action of the pushing mechanism, which is conducive to the protective mechanism locking and locking the printing mechanism after reset, thereby preventing the printing mechanism from moving due to misoperation and causing an accident, namely: after the table panel slides out of one end of the frame, it is convenient to pull the cross plate to unload the material, and the locking pin is located at the top of the card slot. After the cross plate slides out of the table panel, the transmission rod and the drive wheel rise and slide under the action of the control spring without external force resistance. The transmission rod drives the drive block to resist one of the pressure wheels, so that the extrusion rod and the other pressure wheel resist the top of the locking pin. The locking pin is freed from the action of the active spring and slides down, which is conducive to the locking pin being inserted into the card slot, thereby limiting the table panel and preventing the table panel from sliding due to unintentional operation and causing an accident. After unloading is completed, the cross plate is pushed to reset, and the cross plate squeezes the transmission rod to reset, which is conducive to the locking pin being reset and sliding out of the card slot under the action of the active spring, facilitating the subsequent normal operation of the table top to release the limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a 3D printing device for an absorbable bone implant provided by the present invention;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0027] Figure 3 It is a schematic diagram of the connection structure between the table top, the backing plate and the bottom plate of the present invention;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of the structure of part B is shown;

[0029] Figure 5 It is a schematic diagram of the connection structure between the push plate and the push block of the present invention;

[0030] Figure 6 It is a schematic diagram of the connection structure between the limit block and the guide wheel of the present invention;

[0031] Figure 7 It is a schematic diagram of the connection structure between the slide bar and the limiting groove of the present invention;

[0032] Figure 8 It is a schematic diagram of the connection structure between the horizontal plate and the bayonet pin of the present invention;

[0033] Fig. 9 It is a schematic diagram of the connection structure between the horizontal plate and the table plate of the present invention;

[0034] Fig.10 It is a schematic diagram of the connection structure between the table panel and the transmission rod of the present invention;

[0035] Fig.11 for Fig.10 An enlarged schematic diagram of the C-section structure is shown;

[0036] Fig.12 for Fig.10 An enlarged schematic diagram of the D structure is shown.

[0037] In the figure: 1, machine base; 2, printing mechanism; 201, frame; 202, printing assembly; 203, table panel; 204, guide rail; 205, support seat; 3, material discharge mechanism; 301, pad; 302, storage slot; 303, bottom plate; 304, telescopic spring; 4, material push mechanism; 401, horizontal plate; 402, handle; 403, slide bar; 404, connecting plate; 405, push plate; 406, compression spring; 407, push block; 5, locking mechanism; 501, top block; 502, resistance spring; 503, fixed shaft; 504, movable slot; 505, Driving rod; 506, card plate; 507, anti-skid pad; 6, limiting mechanism; 601, limiting block; 602, extrusion spring; 603, guide wheel; 604, rotating shaft; 605, limiting slot; 7, locking mechanism; 701, push buckle; 702, card pin; 703, groove; 704, protrusion; 705, pressing spring; 706, locking slot; 8, protection mechanism; 801, transmission rod; 802, pressure wheel; 803, driving block; 804, extrusion rod; 805, locking pin; 806, movable spring; 807, control spring; 808, driving wheel; 809, card slot. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figure 1-Figure 12 As shown, a 3D printing equipment for absorbable bone implants described in the present invention includes a machine base 1, a printing mechanism 2 is installed on the machine base 1, a feeding mechanism 3 is installed on the machine base 1, a pushing mechanism 4 is installed on the feeding mechanism 3, a limiting mechanism 6 is installed on the pushing mechanism 4, a locking mechanism 5 is installed on the pushing mechanism 4, a locking mechanism 7 is connected to the pushing mechanism 4, and a protective mechanism 8 is installed on the printing mechanism 2.

[0040] Specifically, the printing mechanism 2 includes a frame 201, the frame 201 is detachably mounted on the base 1, the frame 201 is cooperatively connected with a printing component 202, two groups of support seats 205 are mounted on the base 1, guide rails 204 are mounted on the two groups of support seats 205, a table panel 203 is provided on the base 1, and the table panel 203 is slidably connected to the top of the base 1 through two guide rails 204. The base 1 facilitates the installation of the frame 201, and the frame 201 facilitates the connection of the printing component 202. The table panel 203 facilitates the stacking of blanks during printing. The table top can slide under the action of the transmission component and the guide rail 204, and the 3D printing work is achieved under the action of the printing component 202.

[0041] Specifically, the material discharging mechanism 3 includes a storage groove 302, the table panel 203 is provided with a storage groove 302, the storage groove 302 is a "convex" shaped structure, the storage groove 302 is provided with a bottom plate 303, the bottom plate 303 is slidably connected to the inside of the storage groove 302 through a plurality of telescopic springs 304, a plurality of pads 301 are stacked on the bottom plate 303, the pads 301 are slidably connected to the inside of the storage groove 302, and the storage groove 302 is used to facilitate the storage of a plurality of The stacked pads 301 are placed with both side edges of the top pad in contact with the inner side of the base 1. The pads 301 are used to facilitate stacking of blanks during 3D printing. Pulling out the top pad 301 facilitates unloading. The bottom plate 303 and the telescopic spring 304 make the next pad 301 rise up due to contact, thereby realizing rapid replacement of the pad 301, facilitating subsequent printing work and making operation more convenient.

[0042] Specifically, the pusher mechanism 4 includes a slide bar 403. The top sides of the two ends of the table top plate 203 are internally and slidably connected to the slide bar 403. A push plate 405 is slidably connected to the top of the table top plate 203. Both ends of the push plate 405 are connected to the side walls of one ends of the two slide bars 403 through connecting plates 404. The connecting plates 404 are slidably connected to the inner side of the table top plate 203. The other ends of the two slide bars 403 extend to the outside of the table top plate 203. A cross plate 401 is slidably connected to the table top plate 203. The other ends of the two slide bars 403 are respectively vertically connected to one sides of both ends of the cross plate 401. A plurality of push blocks 407 are installed at the bottom of the push plate 405. The tops of the push blocks 407 are slidably connected to the inside of the push plate 405 through compression springs 406. The push blocks 407 are trapezoidal structures. One side of a push block 407 abuts against one side of one of the cushion plates 301. A handle 402 is installed at the center of the cross plate 401. The handle 402 is in a "U" shape. Through the installation of the slide bar 403 and the connecting plate 404, it is beneficial to pull the cross plate 401 through the handle 402 so that the push plate 405 can slide on the top of the storage groove 302. Through the abutment of the plurality of push blocks 407 against the cushion plate 301, when the push plate 405 is pulled out, the topmost cushion plate 301 is pushed out for blanking. After taking out the top cushion plate 301 and the blank, by pushing the cross plate 401, the push plate 405 slides back to its original position, and the push block 407 is abutted and contracts under the action of getting rid of the compression spring 406. The push block 407 slides on the cushion plate 301. When the push plate 405 slides back to its initial position, the push block 407 slides out of one end of the cushion plate 301. The top plate rises under the abutment of the bottom plate 303 to facilitate printing and stacking of materials, so that the push block 407 is located at one side of the cushion plate 301, facilitating subsequent material pushing.

[0043] Specifically, the limiting mechanism 6 includes a limiting block 601, and the limiting blocks 601 are respectively installed inside the two ends of the table panel 203. The limiting block 601 is slidably connected to the inside of the table panel 203 through an extrusion spring 602. The limiting block 601 is a trapezoidal structure. The top of the limiting block 601 is rotatably connected to a guide wheel 603 through a rotating shaft 604. The guide wheel 603 conflicts with the bottom of the sliding rod 403. A limiting groove 605 is provided on the bottom side of one end of the two sliding rods 403. The limiting block 601 and the limiting groove 605 are both trapezoidal structures. Under the action of the extrusion spring 602, the guide wheel 603 on the limiting block 601 is rotatably connected to the sliding rod 40 3, which is beneficial to the slide bar 403 not causing wear when sliding. After the slide bar 403 slides to a certain position, the limit groove 605 is located at the top of the limit block 601. Under the action of the extrusion spring 602, the limit block 601 slides into the limit groove 605 and engages, which is beneficial to limit the slide bar 403 and prevent it from being pulled out, thereby preventing the slide bar 403 from slipping. By pushing the slide bar 403, since the limit block 601 and the limit groove 605 are both trapezoidal structures, the side wall of the limit groove 605 shrinks against the limit block 601, thereby facilitating the slide bar 403 to slide back and reset.

[0044] Specifically, the locking mechanism 7 includes a latch 702, and symmetrical latches 702 are slidably connected at both ends of the cross plate 401. The latch 702 is an "L"-shaped structure, and symmetrical locking grooves 706 are provided on both sides of the table panel 203. One end of the latch 702 extends into the locking groove 706, and the other end of the latch 702 extends to the outside of the cross plate 401. A push buckle 701 is installed at the other end of the latch 702, and the push buckle 701 is slidably connected to the outside of the cross plate 401 through the latch 702. The engagement of the latch 702 with the locking groove 706 is conducive to limiting the position of the cross plate 401, so that the cross plate 401 will not be pulled out. By pushing the push buckle 701, the push buckle 701 drives the latch 702 to slide out of the locking groove 706, so that the cross plate 401 can be slid and pulled out on the table panel 203 to realize the unloading work.

[0045] When the locking cam 706 is in the state of being lifted up, the locking cam 706 will be in the state of being lifted and the locking cam 706 will be in the state of being loose.

[0046] Specifically, the engaging mechanism 5 includes a top block 501, and a plurality of symmetrical top blocks 501 are installed inside the two slide bars 403. The top blocks 501 are slidably connected to the inside of the slide bar 403 under the action of the resisting spring 502. One end of the plurality of top blocks 501 is a hemispherical structure, and one end of the plurality of top blocks 501 extends to the outside of the slide bar 403 and resists the inside of the table panel 203. A plurality of driving rods 505 are respectively arranged inside the two slide bars 403. The driving rods 505 are connected to the slide bar 403 through the movable groove 504 and the fixed groove 504. The fixed shaft 503 is rotatably connected to the inside of the slide bar 403, the top of the driving rod 505 is rotatably connected to the other end of the top block 501 through another movable groove 504, and a plurality of card plates 506 are slidably connected to the inner sides of the bottoms of the two slide bars 403. The bottom of the driving rod 505 is rotatably connected to one end of the card plate 506. The card plate 506 is a trapezoidal structure, and the other end of the card plate 506 is located on one side of the pad 301. An anti-skid pad 507 is installed on the top of the card plate 506, which is made to The plurality of top blocks 501 abut against the inner side of the table panel 203. The top blocks 501 abut against the driving rod 505 to pull the card plate 506 under the action of the movable groove 504, so that the card plate 506 is stored in the slide bar 403. When the slide bar 403 is pulled out, the top blocks 501 slide out under the action of the abutting spring 502. The top blocks 501 pull the driving rod 505 to swing. Under the action of the movable groove 504 and the fixed shaft 503, the lever principle is used to make the card plate 506 The driving rod 505 pushes out the card plate 506, and the card plate 506 slides out of the outer side of the sliding rod 403 and contacts the bottom side of the pad 301, which is beneficial for supporting and lifting the pad 301 through multiple card plates 506, so that the pad 301 will not collapse during material unloading, which facilitates better material unloading. The sliding rod 403 slides into the interior of the table panel 203, and the top block 501 is resisted and retracted, and the card plate 506 retracts and resets, which facilitates the subsequent rising of the pad 301 to receive the material.

[0047] Specifically, the protection mechanism 8 includes a transmission rod 801, two transmission rods 801 are installed inside one end of the table panel 203, and the transmission rod 801 is connected to the table panel 203 by longitudinal sliding under the action of a control spring 807. The tops of the two transmission rods 801 are respectively connected to driving wheels 808, and the driving wheels 808 extend to the outside of the table panel 203 and contact the cross plate 401. Two locking pins 805 are installed at the bottom of one end of the table panel 203. The locking pins 805 are connected to the table panel 203 by a movable spring 806. The top of the locking pin 805 is a semicircular structure, a slot 809 is provided on the top side of one end of the guide rail 204, the bottom of the locking pin 805 is located on the top side of the slot 809, the two transmission rods 801 are fixedly connected to the opposite sides of the bottom with a driving block 803, the driving block 803 is a triangular structure, the table panel 203 is horizontally slidably connected to two extrusion rods 804, and the two ends of the extrusion rods 804 are rotatably connected with pressure wheels 802, one of the pressure wheels 802 is in contact with one side of the top of the locking pin 805, and the other pressure wheel 802 is in contact with the driving block 8 03 side, after the table panel 203 slides out of one end of the frame 201, it is convenient to pull the cross plate 401 for unloading, and the locking pin 805 is located at the top of the card slot 809. After the cross plate 401 slides out of the table panel 203, the transmission rod 801 and the driving wheel 808 rise and slide under the action of the control spring 807 without external force, and the transmission rod 801 drives the driving block 803 to contact one of the pressing wheels 802, so that the extrusion rod 804 and the other pressing wheel 802 contact the locking pin 80 5, the locking pin 805 is freed from the action of the movable spring 806 and slides down, which is conducive to the locking pin 805 being inserted into the inside of the card slot 809, thereby limiting the table panel 203 and preventing the table panel 203 from sliding due to unintentional operation and causing an accident. After the material is unloaded, the horizontal plate 401 is pushed to reset, and the horizontal plate 401 squeezes and resets the transmission rod 801, which is conducive to the locking pin 805 being reset and sliding out of the card slot 809 under the action of the movable spring 806, so as to facilitate the subsequent release of the limit of the table and normal operation.

[0048] An operating method of a 3D printing device for an absorbable bone implant comprises the following steps:

[0049] S1: First, the printing mechanism 2 and the base 1 are installed together to perform 3D printing, and the printed blanks are stacked and unloaded on the unloading mechanism 3;

[0050] S2: Then the locking mechanism 7 is driven to enable the pushing mechanism 4 to pull and work, so that the blank printed on the unloading mechanism 3 can be quickly pushed out and unloaded, so as to prepare for subsequent printing and processing. The limiting mechanism 6 is used to protect the pushing mechanism 4 from sliding when it is pulled, so as to prevent the pushing mechanism 4 from slipping;

[0051] S3: When unloading, the clamping mechanism 5 is operated by driving the pushing mechanism 4, so that the clamping mechanism 5 is clamped against the unloading mechanism 3, so that the blank is lifted and pulled out when unloading;

[0052] S4: The protection mechanism 8 is activated by driving the push mechanism 4, so that the protection mechanism 8 engages and locks the reset printing mechanism 2 to prevent the printing mechanism 2 from moving due to misoperation and causing an accident.

[0053] When the present invention is in use, firstly, the machine base 1 facilitates the installation of the frame 201, and the frame 201 facilitates the connection of the printing assembly 202, and the table panel 203 facilitates the stacking of blanks during printing, and the table top can slide under the action of the transmission assembly and the guide rail 204, and the 3D printing work is realized under the action of the printing assembly 202, and the storage groove 302 facilitates the placement of multiple stacked pads 301, and the two side edges of the top pad are in conflict with the inner side of the machine base 1, and the pad 301 facilitates the stacking of blanks during 3D printing, and the top pad 301 is pulled out to facilitate the unloading work, and the bottom plate 303 and the telescopic spring 304 are used. The locking cam 702 is engaged with the locking cam 706, and the locking cam 706 is engaged with the locking cam 706 to limit the position of the horizontal plate 401, so that the horizontal plate 401 will not be pulled out. By pushing the push buckle 701, the push buckle 701 drives the locking cam 702 to slide out of the locking cam 706, so that the horizontal plate 401 can be slid and pulled out on the table panel 203 to realize the unloading work. By pressing the spring 705, the protrusion 704 is in conflict with the inside of the groove 703, which plays a role in assisting the limiting of the contact of the locking cam 702. By pushing the locking cam 702, since one end of the protrusion 704 is a hemispherical structure, the groove 703 conflicts with the protrusion 704 to get rid of the pressing spring 705. When the locking cam 706 is in the locked state, the locking cam 706 is in the locked state, and the locking cam 706 is in the locked state, so that the locking cam 706 is locked. 07 slides on the pad 301. When the push plate 405 slides to the initial position, the push block 407 slides out of one end of the pad 301, and the top plate rises under the resistance of the bottom plate 303 to facilitate printing and stacking, so that the push block 407 is on one side of the pad 301, which is convenient for subsequent pushing. Through the action of the extrusion spring 602, the guide wheel 603 on the limit block 601 is in resistance with the slide bar 403, which is beneficial for the slide bar 403 not to cause wear when sliding. After the slide bar 403 slides to a certain position, the limit groove 605 is located at the top of the limit block 601. Under the action of the extrusion spring 602, the limit block 601 slides into the limit groove 605 and engages, which is beneficial for limiting the slide bar 403 and preventing it from being pulled out, thereby preventing the slide bar 403 from slipping off. By pushing the slide bar 403,Since the limit block 601 and the limit groove 605 are both trapezoidal structures, the side wall of the limit groove 605 shrinks against the limit block 601, so that the slide bar 403 can slide back and forth, and the plurality of top blocks 501 are in contact with the inner side of the table panel 203 under the action of the resistance spring 502. The top block 501 resists the driving rod 505 to pull the card plate 506 under the action of the movable groove 504, so that the card plate 506 is stored in the slide bar 403. When the slide bar 403 is pulled out, the top block 501 is in contact with the resistance spring 502. 2, the top block 501 pulls the driving rod 505 to swing, and under the action of the movable groove 504 and the fixed shaft 503, the driving rod 505 is pushed out by the lever principle, and the clamping plate 506 slides out of the outer side of the sliding rod 403 and contacts the bottom side of the pad 301, which is conducive to supporting and lifting the pad 301 through multiple clamping plates 506, so that the pad 301 will not collapse during unloading, which is convenient for better unloading work, and slides into the interior of the table panel 203 through the sliding rod 403, and the top block 501 is resisted and retracted. The card plate 506 shrinks and resets, which is convenient for the subsequent pad 301 to rise and receive the material. After the table panel 203 slides out of one end of the frame 201, it is convenient to pull the cross plate 401 to unload the material, and the locking pin 805 is located at the top of the card slot 809. After the cross plate 401 slides out of the table panel 203, the transmission rod 801 and the driving wheel 808 rise and slide without external force under the action of the control spring 807. The transmission rod 801 drives the driving block 803 to resist one of the pressing wheels 802, so that the extrusion rod 804 and the other pressing wheel 808 02 resists the top of the lock pin 805, and the lock pin 805 slides down to get rid of the action of the movable spring 806, which is conducive to the lock pin 805 inserting into the card slot 809, thereby limiting the table panel 203 and preventing the table panel 203 from sliding due to unintentional operation and causing accidents. After the material is unloaded, the horizontal plate 401 is pushed to reset, and the horizontal plate 401 squeezes the transmission rod 801 to reset, which is conducive to the lock pin 805 to reset and slide out of the card slot 809 under the action of the movable spring 806, which is convenient for the subsequent table to release the limit and work normally.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A 3D printing device for absorbable bone implants, characterized in that: The invention comprises a machine base (1), a printing mechanism (2) being mounted on the machine base (1), a material discharge mechanism (3) being mounted on the machine base (1), a material push mechanism (4) being mounted on the material discharge mechanism (3), a limit mechanism (6) being mounted on the material push mechanism (4), a locking mechanism (5) being mounted on the material push mechanism (4), a locking mechanism (7) being connected to the material push mechanism (4), and a protection mechanism (8) being mounted on the printing mechanism (2); The printing mechanism (2) comprises a frame (201), the frame (201) is detachably mounted on the base (1), a printing assembly (202) is cooperatively connected to the frame (201), two groups of support seats (205) are mounted on the base (1), guide rails (204) are mounted on the two groups of support seats (205), a table panel (203) is provided on the base (1), and the table panel (203) is slidably connected to the top of the base (1) via two guide rails (204); The material discharging mechanism (3) comprises a storage groove (302), the table panel (203) is provided with the storage groove (302), the storage groove (302) is a "convex"-shaped structure, a bottom plate (303) is provided inside the storage groove (302), the bottom plate (303) is slidably connected to the inside of the storage groove (302) via a plurality of telescopic springs (304), a plurality of pads (301) are stacked on the bottom plate (303), and the pads (301) are slidably connected to the inside of the storage groove (302); The pushing mechanism (4) comprises a sliding rod (403), the sliding rods (403) are slidably connected to the top sides of both ends of the table panel (203), a pushing plate (405) is slidably connected to the top of the table panel (203), the two ends of the pushing plate (405) are connected to the side walls of one end of the two sliding rods (403) through a connecting plate (404), the connecting plate (404) is slidably connected to the inner side of the table panel (203), and the other ends of the two sliding rods (403) extend to the outside of the table panel (203). On the side, a horizontal plate (401) is slidably connected to the table panel (203), the other ends of the two sliding rods (403) are respectively vertically connected to one side of both ends of the horizontal plate (401), a plurality of push blocks (407) are installed at the bottom of the push plate (405), the top of the push block (407) is slidably connected to the inside of the push plate (405) through a compression spring (406), the push block (407) is a trapezoidal structure, and one side of the push block (407) is in contact with one side of one of the pads (301); The limiting mechanism (6) comprises a limiting block (601), and the limiting blocks (601) are respectively installed inside the two ends of the table panel (203), and the limiting blocks (601) are slidably connected to the inside of the table panel (203) through a compression spring (602), and the limiting block (601) is a trapezoidal structure. The bottom side of one end of the two sliding rods (403) is provided with a limiting groove (605), and the limiting block (601) and the limiting groove (605) are both trapezoidal structures; The locking mechanism (7) comprises a bayonet (702), and symmetrical bayonet pins (702) are slidably connected to the inside of the two ends of the transverse plate (401), and the bayonet pins (702) are of an "L"-shaped structure. Symmetrical locking grooves (706) are provided inside the two sides of the table panel (203), and one end of the bayonet pin (702) extends into the inside of the locking groove (706), and the other end of the bayonet pin (702) extends to the outside of the transverse plate (401). A push buckle (701) is installed at the other end of the bayonet pin (702), and the push buckle (701) is slidably connected to the outside of the transverse plate (401) through the bayonet pin (702); Two protrusions (704) are installed inside the transverse plate (401), and the protrusions (704) are slidably connected to the inside of the transverse plate (401) via a pressing spring (705). One end of the protrusion (704) is a hemispherical structure, and two side walls of the two latches (702) are provided with two grooves (703). One end of the protrusion (704) abuts against the inside of one of the grooves (703); The locking mechanism (5) comprises a top block (501), a plurality of symmetrical top blocks (501) are installed inside the two slide bars (403), the top blocks (501) are slidably connected to the inside of the slide bar (403) under the action of a resistance spring (502), one end of the plurality of top blocks (501) is a hemispherical structure, one end of the plurality of top blocks (501) extends to the outside of the slide bar (403) and resists against the inside of the table panel (203), and a plurality of driving rods (501) are respectively arranged inside the two slide bars (403). 05), the driving rod (505) is rotatably connected to the inside of the sliding rod (403) through a movable groove (504) and a fixed shaft (503), the top of the driving rod (505) is rotatably connected to the other end of the top block (501) through another movable groove (504), a plurality of clamping plates (506) are slidably connected to the inner sides of the bottoms of the two sliding rods (403), the bottom of the driving rod (505) is rotatably connected to one end of the clamping plate (506), and the other end of the clamping plate (506) is located on one side of the pad (301); The protection mechanism (8) includes a transmission rod (801). Two transmission rods (801) are installed inside one end of the table top panel (203). The transmission rod (801) is longitudinally slidably connected to the inside of the table top panel (203) under the action of a control spring (807). Driving wheels (808) are respectively rotatably connected to the tops of the two transmission rods (801). The driving wheels (808) extend to the outside of the table top panel (203) and abut against the cross plate (401). Two locking pins (805) are installed at the bottom of one end of the table top panel (203). The locking pins (805) are longitudinally slidably connected to the inside of the table top panel (203) through movable springs (806). The top of the locking pin (805) is of a semi-circular structure. A clamping groove (809) is provided on the top side of one end of the guide rail (204). The bottom of the locking pin (805) is located on the top side of the clamping groove (809). Driving blocks (803) are fixedly connected to the opposite sides of the bottoms of the two transmission rods (801). The driving blocks (803) are of a triangular structure. Two pressing rods (804) are horizontally slidably connected to the inside of the table top panel (203). Pressing wheels (802) are rotatably connected to both ends of the pressing rods (804). One of the pressing wheels (802) abuts against one side of the top of the locking pin (805), and the other pressing wheel (802) abuts against one side of the driving block (803).

2. The 3D printing equipment for absorbable bone implants according to claim 1, characterized in that: A handle (402) is installed at the center of the cross plate (401). The handle (402) is of a "U" - shaped structure.

3. The 3D printing equipment for absorbable bone implants according to claim 1, characterized in that: A guide wheel (603) is rotatably connected to the top of the limit block (601) through a rotating shaft (604). The guide wheel (603) abuts against the bottom of the sliding rod (403).

4. The 3D printing equipment for absorbable bone implants according to claim 1, characterized in that: The clamping plate (506) is of a trapezoidal structure. An anti - slip pad (507) is installed on the top of the clamping plate (506).

5. The method for operating a 3D printing device for an absorbable bone implant according to any one of claims 1 to 4, characterized in that: It includes the following steps: S1: First, after the printing mechanism (2) and the machine base (1) are cooperatively installed, 3D printing work is carried out, and the printed blanks are stacked and unloaded on the feeding mechanism (3). S2: Then, the locking mechanism (7) is driven so that the pushing mechanism (4) can pull and work, enabling the printed blanks on the feeding mechanism (3) to be quickly pushed out for unloading, in preparation for subsequent printing and processing again. The limit mechanism (6) is beneficial for protecting the sliding when the pushing mechanism (4) pulls, preventing the pushing mechanism (4) from slipping off. S3: When unloading, the engaging mechanism (5) is made to work by driving the pushing mechanism (4), so that the engaging mechanism (5) abuts and engages with the feeding mechanism (3), thereby lifting and pulling out the blanks during unloading. S4: The protection mechanism (8) is made to work by driving the pushing mechanism (4), so that the protection mechanism (8) clamps and locks the reset printing mechanism (2).

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