3D printing device and printing method thereof

Abstract

The present invention relates to the technical field of 3D printing, and the present invention proposes a new 3D printing device and a printing method thereof. The device includes an extrusion hot end, a Z-moving mechanism, an X-moving mechanism, a Y-moving mechanism and a hot bed assembly, and the hot bed assembly includes a sliding seat, a bed base plate, an electric heating plate, a receiving groove, a first ear block, a flap arm and a PEI spring plate. The device also includes a linkage assembly, including a trigger shaft assembly and a trigger mechanism for tilting the flap arm. Through the action of the linkage assembly, the hot bed assembly can move and drive the flap arm and the PEI spring plate to rotate, so as to achieve the separation of the model from the spring plate. In addition, the device also includes a pull rod electromagnet and a V-block for promoting the model to fall off. The present invention also provides a printing method for a 3D printing device, including two steps of printing preparation and model separation. Through the device and method of the present invention, continuous printing and automatic separation of models can be achieved, thereby improving the efficiency of 3D printing.

Description

Technical Field

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

[0002] 3D printing is an additive manufacturing technology that uses 3D model data as the basis to manufacture 3D entities by programmable layer-by-layer stacking of materials. Existing 3D printing devices usually include an extrusion hot end, an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism, a hot bed assembly, and other parts. However, existing 3D printing devices have some problems during the printing process, such as the difficulty in separating the model from the spring plate, and the inability to automatically separate the model to achieve continuous printing of different models. Therefore, it is necessary to design a new 3D printing device and a related printing method to solve these problems. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a 3D printing device and a printing method thereof.

[0004] A 3D printing device proposed by the present invention comprises an extrusion hot end, and a Z-direction moving mechanism for realizing movement of the extrusion hot end in the Z direction, an X-direction moving mechanism for realizing movement of the extrusion hot end in the X direction, and a machine base for supporting the Z-direction moving mechanism, wherein the Z-direction moving mechanism is fixed to one side of the top of the machine base, a Y-direction moving mechanism is arranged on the top of the machine base, a hot bed assembly movable in the Y direction is arranged on the Y-direction moving mechanism, the Y-direction moving mechanism is away from one end of the Z-direction moving mechanism, and a gap is left between the Y-direction moving mechanism and the machine base;

[0005] The hot bed assembly includes a sliding seat, a bed base plate is fixed on the upper part of the sliding seat, the bed base plate and the sliding seat are fixed by bolts, and a gap is left between the sliding seat and the bed base plate, an electric heating plate is fixedly arranged on the top of the bed base plate, a receiving groove is arranged on the side of the bed base plate away from the Z-direction moving mechanism, first ear blocks are arranged on both sides of the receiving groove, and flip arms are arranged on both sides of the top of the electric heating plate, and two flip arms are rotatably connected to the two first ear blocks respectively, a same PEI spring plate is fixedly arranged between the two bed base plates, and a linkage assembly is arranged between the two flip arms to drive the flip arm to rotate when the hot bed assembly moves to the end of the Y-direction moving mechanism away from the Z-direction moving mechanism.

[0006] As a further optimization of the technical solution, in the 3D printing device, the linkage assembly includes a trigger shaft assembly rotatably arranged between the first ear blocks, the trigger shaft assembly includes a shaft body, both ends of the shaft body are coaxially provided with multi-ribbed rods, and the two multi-ribbed rods are provided with a circular shaft portion at one end away from the shaft body, the two circular shaft portions are respectively rotatably connected to the two first ear blocks, a support rod is radially arranged at the middle position of the outer circumferential surface of the shaft body, the flap arm includes a cross arm, and a connecting block is arranged at one end of the cross arm, a second ear block corresponding to the position of the first ear block is arranged on one side of the connecting block, a sleeve is fixed on the second ear block, and the sleeve is sleeved on the multi-ribbed rod The outer side of the multi-ribbed rod is provided with a multi-ribbed hole for the multi-ribbed rod to pass through, a spring is sleeved between the outer side of the multi-ribbed rod near the second ear block and the shaft body, a linkage sleeve assembly is fixed to the sliding seat near the accommodating groove, and the linkage sleeve assembly includes a mounting block fixed to the sliding seat, and the mounting block is provided with sleeves coaxial with the shaft body at positions on both sides of the support rod, and the two sleeves are respectively sleeved on two sleeves, and an oblique groove is provided on the outer circumferential surface of the sleeve, and the distance from the oblique groove close to one end of the support rod to the PEI spring plate is greater than the distance from the oblique groove far from one end of the support rod to the PEI spring plate, and a convex pin is provided in the sleeve, and the convex pin is inserted in the oblique groove.

[0007] In this preferred embodiment, with the action of the Y-axis moving mechanism, the hot bed assembly is driven to move in the direction away from the Z-axis moving mechanism. When it moves to the maximum position, the support rod is blocked, and the shaft body is driven to rotate. Due to the setting of the multi-ribbed rod, the sleeve can be driven to rotate, thereby driving the flap arm and the PEI spring plate to rotate. During the process, due to the setting of the inclined groove and the protruding pin, the two groups of flap arms can be brought closer to each other, and the PEI spring plate can be squeezed during the process to achieve its bending, which helps the model on the PEI spring plate to fall off from it. The set spring can drive the two flap arms away from each other and reset when the support rod is not under force.

[0008] As a further optimization of the technical solution, in the 3D printing device, a pull rod electromagnet is fixed to the lower part of the Y-direction moving mechanism away from one end of the Z-direction moving mechanism, and a V-shaped block corresponding to the support rod is fixed to the end of the pull rod of the pull rod electromagnet close to the hot bed assembly.

[0009] In this preferred embodiment, a pull rod electromagnet and a V-shaped block are provided to cooperate with the support rod, which can block the support rod and drive the shaft body to rotate during the process of the Y-axis moving mechanism driving the hot bed assembly to move. In addition, the reciprocating power supply of the pull rod electromagnet can be controlled during the process, so as to realize the differential shaking of the PEI spring plate and promote the falling off of the model.

[0010] As a further optimization of the technical solution, in the 3D printing device, the two cross arms are provided with stepped grooves adapted to the thickness of the PEI spring plate, and the two sides of the PEI spring plate are respectively fixed in the two stepped grooves.

[0011] In this preferred embodiment, the flexible magnetic stickers can be bonded to both the lower surface of the PEI spring plate and the upper surface of the electric heating plate.

[0012] As a further optimization of the technical solution, in the 3D printing device, the base includes a seat plate, and a lower shell is fixed to the bottom of the seat plate, and the Z-axis moving mechanism is fixed to the seat plate by bolts.

[0013] As a further optimization of the technical solution, a 3D printing device is described, wherein both sides of the bed base plate are provided with a trigger mechanism for tilting the flap arm, the trigger mechanism includes a trigger arm, and the trigger arm includes a rotating block, a long arm is provided on one side of the rotating block, a short arm is provided on the side of the rotating block away from the long arm, and a roller is rotatably provided on the end of the short arm away from the long arm, a rectangular notch is provided on one side of the bed base plate, a rotating shaft is provided in the rectangular notch, the rotating block is rotatably connected to the rotating shaft, a rectangular through hole is provided at the position of the seat plate near the long arm, a servo is fixed at the lower part of the seat plate near the position of the rectangular through hole, a trigger block unit is fixed to the output shaft of the servo, the trigger block unit corresponds to the position of the rectangular through hole, and the trigger block unit includes a strip block fixedly connected to the output shaft of the servo.

[0014] As a further optimization of the technical solution, in the 3D printing device, a convex tooth portion is provided on one side of the trigger block unit, and an inclined portion is formed obliquely upward on the upper portion of the servo.

[0015] In this preferred embodiment, a discharge hopper assembly is fixed to one end of the Y-direction moving mechanism away from the Z-direction moving mechanism.

[0016] As a further optimization of the technical solution, in the 3D printing device, the hopper assembly includes a horizontal portion, an inclined plate and a side plate portion, the horizontal portion is connected to the Y-axis moving mechanism, the side plate portion is inclined at a certain angle to the horizontal portion, the side plate portion is located on both sides of the inclined plate and the horizontal portion, and the distance between the two side plate portions is greater than the width of the hot bed assembly.

[0017] In the preferred embodiment, such a design enables the discharge hopper assembly to discharge the printed model smoothly.

[0018] A printing method of a 3D printing device, applied to any of the above-mentioned 3D printing devices, comprises the following steps:

[0019] Printing preparation: Control the servo to drive the trigger block unit to rotate and store it in the rectangular perforation, then move the hot bed assembly to the bottom of the hot bed assembly through the Y-axis moving mechanism, control the electric heating plate to heat up the PEI spring plate, and then cooperate with the Z-axis moving mechanism, X-axis moving mechanism and Y-axis moving mechanism to drive the hot bed assembly and the hot bed assembly to move, and print on the surface of the PEI spring plate;

[0020] Model separation: control the servo to extend the trigger block unit from the rectangular perforation, and then control the Y-axis moving mechanism to drive the hot bed assembly to move away from the Z-axis moving mechanism. The long arm on the trigger mechanism contacts the trigger block unit, and at the same time control the pull rod electromagnet to drive the V-block to move, push the support rod to move, thereby driving the shaft body to rotate, thereby driving the flap arm and the PEI spring plate to rotate a certain angle, and control the servo to collect the trigger block unit into the rectangular perforation, and then continue to control the hot bed assembly to move toward the pull rod electromagnet through the Z-axis moving mechanism, thereby driving the shaft body to continue to rotate, thereby driving the flap arm and the PEI spring plate to continue to rotate, and in the process, due to the set inclined groove and convex pin, the two flap arms are driven to approach each other, and the PEI spring plate will be bent in the process, so that the printed model is separated and dropped from the PEI spring plate, and the printed model can be discharged through the discharge hopper assembly with the set hopper assembly.

[0021] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0022] The flap arm and PEI spring plate can be coordinated with the linkage assembly to drive the two flap arms to move closer to each other, and the PEI spring plate can be bent, so that the model and the PEI spring plate are automatically separated, and the separated model can be conveniently collected in combination with the discharge hopper assembly, which is beneficial to the continuous printing of the entire 3D printing device. In combination with the set trigger mechanism, the flap arm can be smoothly rotated, making it easy for the model to slide off the hot bed assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a 3D printing device proposed by the present invention;

[0024] Figure 2 This is a structural schematic diagram of a hot bed assembly, a Y-axis moving mechanism and a machine base of a 3D printing device proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a 3D printing device base proposed by the present invention;

[0026] Figure 4 This is a structural schematic diagram of a trigger block unit of a 3D printing device proposed by the present invention;

[0027] Figure 5 This is a structural schematic diagram of a hopper assembly of a 3D printing device proposed by the present invention;

[0028] Figure 6 This is a structural schematic diagram of a hot bed assembly and a Y-axis moving mechanism of a 3D printing device proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the exploded structure of a hot bed assembly and a Y-axis moving mechanism of a 3D printing device proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a Y-axis moving mechanism of a 3D printing device proposed by the present invention;

[0031] Fig. 9 This is a schematic diagram of the structure of a trigger arm of a 3D printing device proposed by the present invention;

[0032] Fig.10 A schematic diagram of the structure of a hot bed assembly of a 3D printing device proposed by the present invention;

[0033] Fig.11 This is a structural schematic diagram of a bed base plate and a sliding seat of a 3D printing device proposed by the present invention;

[0034] Fig.12 A schematic diagram of the structure of a flap arm, a PEI spring plate and a linkage assembly of a 3D printing device proposed by the present invention;

[0035] Fig.13 A schematic diagram of the structure of a flap arm and linkage assembly of a 3D printing device proposed by the present invention;

[0036] Fig.14 This is a schematic diagram of the exploded structure of a flap arm and linkage assembly of a 3D printing device proposed by the present invention;

[0037] Fig.15 This is a schematic structural diagram of a trigger shaft assembly of a 3D printing device proposed by the present invention.

[0038] In the figure: 1, machine base; 101, seat plate; 1011, rectangular perforation; 102, lower shell; 2, Z-direction moving mechanism; 3, X-direction moving mechanism; 4, extrusion hot end; 5, Y-direction moving mechanism; 501, horizontal frame; 502, support frame; 503, pull rod electromagnet; 5031, V-shaped block; 504, drive assembly; 5041, stepping motor; 5042, synchronous belt; 5043, synchronous wheel; 6, hot bed assembly; 601, sliding seat; 6011, V wheel; 602, bed base plate; 6021, receiving groove; 6022, first ear block; 6023, rectangular notch; 60231, rotating shaft; 603, flip plate arm; 6031, horizontal arm; 60311, step groove; 6032, connecting block; 603 3. Second ear block; 6034. Sleeve; 60341. Inclined groove; 604. PEI spring plate; 605. Electric heating plate; 606. Linkage sleeve assembly; 6061. Sleeve; 6062. Mounting block; 607. Trigger shaft assembly; 6071. Spring; 6072. Shaft body; 6073. Support rod; 6074. Multi-ribbed rod; 6075. Round shaft portion; 7. Trigger mechanism; 701. Trigger block unit; 7011. Bar block; 7012. Protruding tooth portion; 7013. Inclined portion; 702. Servo; 703. Trigger arm; 7031. Rotating block; 7032. Long arm; 7033. Short arm; 7034. Roller; 8. Discharging hopper assembly; 801. Inclined plate; 802. Side plate portion; 803. Horizontal portion. DETAILED DESCRIPTION

[0039] The following will be combined with the attached embodiment of the present invention Figure 1-Figure 15 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Refer to the attached Figure 1 To Attachment Fig.15 A 3D printing device comprises an extrusion hot end 4, and a Z-direction moving mechanism 2 for realizing the movement of the extrusion hot end 4 along the Z direction, an X-direction moving mechanism 3 for realizing the movement of the extrusion hot end 4 along the X direction, a machine base 1 for supporting the Z-direction moving mechanism 2, the Z-direction moving mechanism 2 being fixed to one side of the top of the machine base 1, a Y-direction moving mechanism 5 being arranged on the top of the machine base 1, a hot bed assembly 6 which can move along the Y direction being arranged on the Y-direction moving mechanism 5, the Y-direction moving mechanism 5 being away from one end of the Z-direction moving mechanism 2, and a gap being left between the Y-direction moving mechanism 5 and the machine base 1;

[0041] The hot bed assembly 6 includes a sliding seat 601, a bed base plate 602 is fixed on the upper part of the sliding seat 601, the bed base plate 602 and the sliding seat 601 are fixed by bolts, and a gap is left between the sliding seat 601 and the bed base plate 602, an electric heating plate 605 is fixedly arranged on the top of the bed base plate 602, a receiving groove 6021 is arranged on the side of the bed base plate 602 away from the Z-direction moving mechanism 2, and first ear blocks 6022 are arranged on both sides of the receiving groove 6021, and flip arms 603 are arranged on both sides of the top of the electric heating plate 605, and two flip arms 603 are rotatably connected to the two first ear blocks 6022 respectively, a same PEI spring plate 604 is fixedly arranged between the two bed base plates 602, and a linkage assembly is arranged between the two flip arms 603 to drive the flip arm 603 to rotate as the hot bed assembly 6 moves to the end of the Y-direction moving mechanism 5 away from the Z-direction moving mechanism 2.

[0042] See attached Figure 8 , Attachment Fig.10 To Attachment Fig.15The linkage assembly includes a trigger shaft assembly 607 rotatably arranged between the first ear blocks 6022, the trigger shaft assembly 607 includes a shaft body 6072, both ends of the shaft body 6072 are coaxially provided with multi-ribbed rods 6074, and the two multi-ribbed rods 6074 are provided with a round shaft portion 6075 at one end away from the shaft body 6072, and the two round shaft portions 6075 are respectively rotatably connected to the two first ear blocks 6022, and a support rod 6073 is provided at the middle position of the outer circumference of the shaft body 6072 along its radial direction, and the flap arm 603 includes a cross arm 6031, and a connecting block 6032 is provided at one end of the cross arm 6031, and a connecting block 6032 is provided on one side of the connecting block 6032 at a position corresponding to the first ear block 6022. The corresponding second ear block 6033, the second ear block 6033 is fixed with a sleeve 6034, the sleeve 6034 is sleeved on the outside of the multi-ribbed rod 6074, the second ear block 6033 is provided with a multi-ribbed hole for the multi-ribbed rod 6074 to pass through, the outside of the multi-ribbed rod 6074 is sleeved with a spring 6071 between the second ear block 6033 and the shaft body 6072, the sliding seat 601 is fixed with a linkage sleeve assembly 606 near the accommodating groove 6021, the linkage sleeve assembly 606 includes a mounting block 6062 fixed on the sliding seat 601, the mounting block 6062 is provided with sleeves 6061 coaxial with the shaft body 6072 at positions on both sides of the support rod 6073, and the two The sleeves 6061 are respectively sleeved on the two sleeves 6034, and the outer circumferential surface of the sleeve 6034 is provided with an inclined groove 60341, and the distance from the end of the inclined groove 60341 close to the support rod 6073 to the PEI spring plate 604 is greater than the distance from the end of the inclined groove 60341 far from the support rod 6073 to the PEI spring plate 604. A convex pin is provided in the sleeve 6061, and the convex pin is inserted in the inclined groove 60341. Here, in cooperation with the function of the Y-direction moving mechanism 5, the hot bed assembly 6 is driven to move in the direction away from the Z-direction moving mechanism 2. When it moves to the maximum position, the support rod 6073 is blocked, and the shaft body 6072 is driven to rotate. Due to the setting of the multi-ribbed rod 6074, the sleeve can be driven 6034 rotates, thereby driving the flap arm 603 and the PEI spring plate 604 to rotate, driving the model of the PEI spring plate 604 to be in an inclined state. During the process, due to the setting of the inclined groove 60341 and the convex pin, the two groups of flap arms 603 can be brought close to each other, and the PEI spring plate 604 can be squeezed during the process to bend it, thereby facilitating the model on the PEI spring plate 604 to fall off from it. The set spring 6071 can drive the two flap arms 603 to move away from the reset when the support rod 6073 is not subjected to force. Since the model is on the inclined PEI spring plate 604, and the PEI spring plate 604 is bent and separated from the printed model, the model can slide along the PEI spring plate 604.

[0043] In the present invention, the Z-direction moving mechanism 2 and the X-direction moving mechanism 3 are both composed of a screw electric slide. The Z-direction moving mechanism 2 includes two vertically arranged screw electric slides. The sliders of the two vertically arranged screw electric slides are fixed to the two ends of the screw electric slide of the X-direction moving mechanism 3. The slider of the screw electric slide of the X-direction moving mechanism 3 is fixed to the hot bed assembly 6. The Y-direction moving mechanism 5 in the present invention includes a transverse frame 501. Both ends of the lower part of the transverse frame 501 are fixed with support frames 502, and the two support frames 502 are respectively fixedly connected to the two sides of the top of the seat plate 101. By setting the support frames 502, a certain gap is achieved between the transverse frame 501 and the top of the seat plate 101. The transverse frame 501 is provided with a driving assembly 504 that drives the hot bed assembly 6 to slide on the transverse frame 501. One embodiment is The driving component 504 includes a stepping motor 5041 fixed at one end of the lower part of the transverse frame 501, and a synchronous wheel 5043 is rotatably arranged at one end of the transverse frame 501 away from the stepping motor 5041. A driving wheel is fixed to the output shaft of the stepping motor 5041, and a same synchronous belt 5042 is sleeved between the driving wheel and the synchronous wheel 5043. The sliding mode between the sliding seat 601 and the Y-direction moving mechanism 5 can be that a plurality of pulley groups are arranged at the lower part of the sliding seat 601, and the pulley group includes two V-wheels 6011, and the two V-wheels 6011 of the same pulley group are rotatably arranged at the lower part of the sliding seat 601 along the X-axis direction. To match it, the transverse frame 501 is a rectangular structure composed of aluminum profiles, and the two V-wheels 6011 of the same pulley group are respectively slidably arranged in the aluminum profile grooves on both sides of the transverse frame 501.

[0044] See attached Figure 8 A pull rod electromagnet 503 is fixed to the end of the lower part of the Y-axis moving mechanism 5 away from the Z-axis moving mechanism 2, and a V-block 5031 corresponding to the support rod 6073 is fixed to the end of the pull rod of the pull rod electromagnet 503 close to the hot bed assembly 6. The pull rod electromagnet 503 and the V-block 5031 are arranged to cooperate with the support rod 6073, which can block the support rod 6073 and drive the shaft 6072 to rotate during the process of the Y-axis moving mechanism 5 driving the hot bed assembly 6 to move, and the reciprocating power supply of the pull rod electromagnet 503 can be controlled during the process, so that the differential shaking of the PEI spring plate 604 can be achieved, thereby promoting the falling off of the model.

[0045] See attached Fig.12 and 13 The two cross arms 6031 are provided with stepped grooves 60311 that are adapted to the thickness of the PEI spring plate 604, and the two sides of the PEI spring plate 604 are respectively fixed in the two stepped grooves 60311, and flexible magnetic patches can be bonded to the lower surface of the PEI spring plate 604 and the upper surface of the heating plate 605.

[0046] See attached Figure 3The machine base 1 includes a seat plate 101, and a lower shell 102 is fixed to the bottom of the seat plate 101, and the Z-direction moving mechanism 2 is fixed to the seat plate 101 by bolts.

[0047] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 6 , Attachment Figure 7 , Attachment Fig. 9 and attached Fig.11 The two sides of the bed base plate 602 are provided with a trigger mechanism 7 for tilting the flap arm 603. The trigger mechanism 7 includes a trigger arm 703. The trigger arm 703 includes a rotating block 7031. A long arm 7032 is provided on one side of the rotating block 7031. A short arm 7033 is provided on the side of the rotating block 7031 away from the long arm 7032. A roller 7034 is rotatably provided on one end of the short arm 7033 away from the long arm 7032. A rectangular notch 6023 is provided on one side of the bed base plate 602. The rectangular notch 602 3 is provided with a rotating shaft 60231, the rotating block 7031 is rotatably connected to the rotating shaft 60231, the seat plate 101 is provided with a rectangular through hole 1011 near the long arm 7032, a steering gear 702 is fixed at a position near the rectangular through hole 1011 at the lower part of the seat plate 101, a trigger block unit 701 is fixed to the output shaft of the steering gear 702, the trigger block unit 701 corresponds to the position of the rectangular through hole 1011, and the trigger block unit 701 includes a bar block 7011 fixedly connected to the output shaft of the steering gear 702.

[0048] See attached Figure 4 A convex tooth portion 7012 is provided on one side of the trigger block unit 701, and a slope portion 7013 is formed obliquely upward on the upper portion of the servo 702.

[0049] See attached Figure 1 and attached Figure 5 A discharge hopper assembly 8 is fixed to one end of the Y-direction moving mechanism 5 away from the Z-direction moving mechanism 2 .

[0050] See attached Figure 5 The discharge hopper assembly 8 includes a horizontal portion 803, an inclined plate 801 and a side plate portion 802. The horizontal portion 803 is connected to the Y-axis moving mechanism 5. The side plate portion 802 is inclined at a certain angle to the horizontal portion 803. The side plate portion 802 is located on both sides of the inclined plate 801 and the horizontal portion 803. The distance between the two side plate portions 802 is greater than the width of the hot bed assembly 6. This design enables the discharge hopper assembly to smoothly discharge the printed model.

[0051] A printing method of a 3D printing device, applied to any of the above-mentioned 3D printing devices, comprises the following steps:

[0052] Printing preparation: Control the servo 702 to work, drive the trigger block unit 701 to rotate and be stored in the rectangular perforation 1011, then move the hot bed assembly 6 to the bottom of the hot bed assembly 6 through the Y-direction moving mechanism 5, control the electric heating plate 605 to heat the PEI spring plate 604, and then cooperate with the Z-direction moving mechanism 2, the X-direction moving mechanism 3 and the Y-direction moving mechanism 5 to drive the hot bed assembly 6 and the hot bed assembly 6 to move, and print on the surface of the PEI spring plate 604;

[0053] Model separation: Control the servo 702 to extend the trigger block unit 701 from the rectangular through hole 1011, then control the Y-direction moving mechanism 5 to drive the hot bed assembly 6 to move away from the Z-direction moving mechanism 2, and the long arm 7032 on the trigger mechanism 7 contacts the trigger block unit 701. At the same time, control the pull rod electromagnet 503 to work, drive the V-block 5031 to move, push the support rod 6073 to move, thereby driving the shaft 6072 to rotate, thereby driving the flap arm 603 and the PEI spring plate 604 to rotate a certain angle, and control the servo 702 to put the trigger block unit 701 into the matrix. shaped through-hole 1011, and then the Z-axis moving mechanism 2 continues to control the hot bed assembly 6 to move toward the side of the pull rod electromagnet 503, thereby driving the shaft 6072 to continue to rotate, thereby driving the flap arm 603 and the PEI spring plate 604 to continue to rotate, and in the process, due to the inclined groove 60341 and the convex pin, the two flap arms 603 are driven to approach each other, and the PEI spring plate 604 is bent in the process, so that the printed model is separated from the PEI spring plate 604 and falls off, and the printed model can be discharged through the discharge hopper assembly 8 in cooperation with the provided discharge hopper assembly 8.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 3D printing device, comprising an extrusion hot end (4), a Z-direction moving mechanism (2) for moving the extrusion hot end (4) along the Z direction, an X-direction moving mechanism (3) for moving the extrusion hot end (4) along the X direction, and a base (1) for supporting the Z-direction moving mechanism (2), characterized in that: The Z-direction moving mechanism (2) is fixed to one side of the top of the machine base (1); a Y-direction moving mechanism (5) is arranged on the top of the machine base (1); a hot bed assembly (6) movable along the Y direction is arranged on the Y-direction moving mechanism (5); the Y-direction moving mechanism (5) is away from one end of the Z-direction moving mechanism (2); and a gap is left between the Y-direction moving mechanism (5) and the machine base (1); The hot bed assembly (6) comprises a sliding seat (601), a bed base plate (602) is fixed on the upper part of the sliding seat (601), the bed base plate (602) and the sliding seat (601) are fixed by bolts, and a gap is left between the sliding seat (601) and the bed base plate (602), an electric heating plate (605) is fixedly arranged on the top of the bed base plate (602), and a receiving groove (6021) is arranged on the side of the bed base plate (602) away from the Z-direction moving mechanism (2), and both sides of the receiving groove (6021) are provided with A first ear block (6022) is provided, and flap arms (603) are provided on both sides of the top of the electric heating plate (605), and the two flap arms (603) are rotatably connected to the two first ear blocks (6022) respectively, and a same PEI spring plate (604) is fixedly provided between the two bed base plates (602), and a linkage component is provided between the two flap arms (603) for driving the flap arms (603) to rotate when the hot bed assembly (6) moves to the Y-direction moving mechanism (5) away from one end of the Z-direction moving mechanism (2); The linkage assembly comprises a trigger shaft assembly (607) rotatably arranged between the first ear blocks (6022), the trigger shaft assembly (607) comprising a shaft body (6072), both ends of the shaft body (6072) are coaxially arranged with multi-ribbed rods (6074), and the two multi-ribbed rods (6074) are arranged with round shaft portions (6075) at one end away from the shaft body (6072), and the two round shaft portions (6075) are rotatably connected to the two first ear blocks (6022) respectively, a support rod (6073) is arranged at the middle position of the outer circumference of the shaft body (6072) along its radial direction, and the flap arm (603) comprises a cross arm (6031), and one end of the cross arm (6031) is provided with a A connecting block (6032) is provided, a second ear block (6033) corresponding to the position of the first ear block (6022) is provided on one side of the connecting block (6032), a sleeve (6034) is fixed on the second ear block (6033), the sleeve (6034) is sleeved on the outer side of the multi-ribbed rod (6074), the second ear block (6033) is provided with a multi-ribbed hole for the multi-ribbed rod (6074) to pass through, a spring (6071) is sleeved between the outer side of the multi-ribbed rod (6074) near the second ear block (6033) and the shaft (6072), and a linkage sleeve assembly (606) is fixed on the sliding seat (601) near the accommodating groove (6021); The linkage sleeve assembly (606) comprises a mounting block (6062) fixed on the sliding seat (601), and sleeves (6061) coaxial with the shaft (6072) are arranged at positions on both sides of the mounting block (6062) close to the support rod (6073). The two sleeves (6061) are respectively sleeved on two sleeves (6034), and an inclined groove (60341) is arranged on the outer peripheral surface of the sleeve (6034), and the inclined groove (60341) is close to one end of the support rod (6073) to the PEI spring. The distance between the spring plate (604) and the PEI spring plate (604) is greater than the distance between the end of the inclined groove (60341) away from the support rod (6073), and the sleeve (6061) is provided with a convex pin, and the convex pin is inserted into the inclined groove (60341); a pull rod electromagnet (503) is fixed to the end of the lower part of the Y-direction moving mechanism (5) away from the Z-direction moving mechanism (2), and a V-shaped block (5031) corresponding to the support rod (6073) is fixed to the end of the pull rod of the pull rod electromagnet (503) close to the hot bed assembly (6).

2. A 3D printing device according to claim 1, characterized in that: The two cross arms (6031) are provided with stepped grooves (60311) that are adapted to the thickness of the PEI spring plate (604), and the two sides of the PEI spring plate (604) are respectively fixed in the two stepped grooves (60311).

3. A 3D printing device according to claim 2, characterized in that: The machine base (1) comprises a seat plate (101), and a lower shell (102) is fixed to the bottom of the seat plate (101), and the Z-direction moving mechanism (2) is fixed to the seat plate (101) by means of bolts.

4. A 3D printing device according to claim 3, characterized in that: A trigger mechanism (7) for tilting the flap arm (603) is disposed on both sides of the bed base plate (602); the trigger mechanism (7) comprises a trigger arm (703); the trigger arm (703) comprises a rotating block (7031); a long arm (7032) is disposed on one side of the rotating block (7031); a short arm (7033) is disposed on the side of the rotating block (7031) away from the long arm (7032); and the short arm (7033) is rotated at one end away from the long arm (7032). A roller (7034) is rotatably provided on the bed base plate (602), a rectangular notch (6023) is provided on one side of the bed base plate (602), a rotating shaft (60231) is provided in the rectangular notch (6023), the rotating block (7031) is rotatably connected to the rotating shaft (60231), a rectangular through hole (1011) is provided on the seat plate (101) near the long arm (7032), and a steering gear (702) is fixed on the lower part of the seat plate (101) near the rectangular through hole (1011).

5. A 3D printing device according to claim 4, characterized in that: The output shaft of the servo (702) is fixed with a trigger block unit (701), the trigger block unit (701) corresponds to the position of the rectangular through hole (1011), and the trigger block unit (701) comprises a strip block (7011) fixedly connected to the output shaft of the servo (702); a convex tooth portion (7012) is provided on one side of the trigger block unit (701), and an inclined portion (7013) is formed on the upper part of the servo (702) obliquely upwards.

6. A 3D printing device according to claim 5, characterized in that: A discharge hopper assembly (8) is fixed to one end of the Y-direction moving mechanism (5) away from the Z-direction moving mechanism (2).

7. A 3D printing device according to claim 6, characterized in that: The discharge hopper assembly (8) comprises a horizontal portion (803), an inclined plate (801) and a side plate portion (802); the horizontal portion (803) is connected to the Y-direction moving mechanism (5); the side plate portion (802) is inclined at a certain angle to the horizontal portion (803); the side plate portion (802) is located on both sides of the inclined plate (801) and the horizontal portion (803); and the spacing between the two side plate portions (802) is greater than the width of the hot bed assembly (6).

8. A printing method of a 3D printing device, applied to the 3D printing device of claim 7, characterized in that: The steps include: Printing preparation: Control the servo (702) to work, drive the trigger block unit (701) to rotate and be stored in the rectangular perforation (1011), then move the hot bed assembly (6) to the bottom of the hot bed assembly (6) through the Y-axis moving mechanism (5), control the electric heating plate (605) to heat the PEI spring plate (604), and then cooperate with the Z-axis moving mechanism (2), the X-axis moving mechanism (3) and the Y-axis moving mechanism (5) to drive the hot bed assembly (6) to move and print on the surface of the PEI spring plate (604); Model separation: Control the servo (702) to work, extend the trigger block unit (701) from the rectangular perforation (1011), then control the Y-direction moving mechanism (5) to drive the hot bed assembly (6) to move away from the Z-direction moving mechanism (2), the long arm (7032) on the trigger mechanism (7) contacts the trigger block unit (701), and at the same time control the pull rod electromagnet (503) to work, drive the V-shaped block (5031) to move, push the support rod (6073) to move, thereby driving the shaft (6072) to rotate, thereby driving the flap arm (603) and the PEI spring plate (604) to rotate a certain angle, and control the servo (702) to move the trigger block unit (701) The heated bed assembly (6) is then moved toward the side of the pull rod electromagnet (503) by controlling the Z-axis moving mechanism (2), thereby driving the shaft (6072) to continue rotating, thereby driving the flap arm (603) and the PEI spring plate (604) to continue rotating, and in the process, due to the inclined groove (60341) and the convex pin, the two flap arms (603) are driven to approach each other, and the PEI spring plate (604) is bent in the process, so that the printed model is separated from the PEI spring plate (604) and falls off, and the printed model can be discharged through the discharge hopper assembly (8) in cooperation with the provided discharge hopper assembly (8).

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