A portable folding 3D printer

Abstract

The present invention relates to a portable folding 3D printer, which relates to the field of 3D printing. The printer comprises a base and a U-shaped frame rotatably mounted on the base, two No. 1 slide rails fixed in the base, No. 1 sliders slidably mounted on the two No. 1 slide rails, mounting plates fixed on the two No. 1 sliders, magnetic plates detachably mounted on the mounting plates by bolts, a hot bed plate adsorbed on the magnetic plates, a double-axis motor fixed between the two No. 1 slide rails, two No. 1 tensioning members fixed in the base, two conveying shafts of the double-axis motor connected to the two No. 1 tensioning members by a No. 1 synchronous belt, and a faster moving speed can be achieved by a driving mechanism. Since the motor of the structure is fixed on the frame, in a print head 3D printer, the motor is generally the largest inertia source. When the motor does not follow the movement at the execution end, the execution end has a smaller inertia, and therefore can adapt to a faster speed.

Description

Technical Field

[0001] The present invention relates to the field related to 3D printing, in particular to a portable folding 3D printer. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a rapid prototyping process equipment.

[0003] In some application scenarios, it is necessary to carry a 3D printer to some special scenarios for construction, so a folding printer is designed on the market. After searching, a foldable printer is disclosed, with announcement number: CN 103625124A. This invention is not a true "folding" printer. This invention reduces the size of the printer and puts it in a container, so it cannot achieve the effect of folding to reduce the volume.

[0004] In this regard, there are some flip-type folding printers similar to the present invention, but this type of printers are directly flipped without damping treatment, resulting in collision when flipping to the end of the stroke, causing other debugged parts to shift. Although most of this type of printers are equipped with shock-absorbing pads, rapid collisions will still cause parts to shift to a certain extent. Summary of the invention

[0005] The purpose of the present invention is to provide a portable foldable 3D printer to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A portable folding 3D printer, comprising:

[0008] A base and a U-shaped frame rotatably mounted on the base;

[0009] Two No. 1 slide rails are fixed in the base, and No. 1 sliders are slidably mounted on the two No. 1 slide rails. A mounting plate is fixed on the two No. 1 sliders, and a magnetic plate is detachably mounted on the mounting plate through bolts, and a hot bed plate is adsorbed on the magnetic plate;

[0010] A double-axis motor is fixed between the two No. 1 slide rails, and two No. 1 tensioning members are also fixed in the base. The two conveying shafts of the double-axis motor are connected to the two No. 1 tensioning members through a No. 1 synchronous belt, and the two No. 1 synchronous belts respectively fix the two No. 1 slide blocks;

[0011] Two No. 2 slide rails are symmetrically fixed in the U-shaped frame, and No. 2 sliders are slidably mounted on the two No. 2 slide rails. The two No. 2 sliders are connected by a No. 3 slide rail, and a No. 3 slider is slidably mounted on the No. 3 slide rail. A print head is mounted on the No. 3 slider, and the No. 3 slider is connected to a driving mechanism installed in the U-shaped frame;

[0012] The base and the U-shaped frame are also connected through an opening and closing mechanism and a locking mechanism.

[0013] As a further solution of the present invention: the driving mechanism comprises two transmission rods rotatably mounted in the U-shaped frame, two belt rollers are coaxially mounted on the two transmission rods, synchronous belt rollers are also mounted on the two second sliders, and second tensioning members are also fixed on both sides of the U-shaped frame, and a second adjustment knob for adjusting the second tensioning member is mounted at the bottom of the second tensioning member;

[0014] One of the belt rollers on the two transmission rods is connected to one of the synchronous belt rollers and one of the second tensioning pieces via a second synchronous belt, and another of the belt rollers on the two transmission rods is connected to another synchronous belt roller and another second tensioning piece via another second synchronous belt;

[0015] A transmission member is also fixed on the second tensioning member, and both ends of the two second synchronous belts are fixed to the transmission member;

[0016] Two driving motors are also fixed on the top of the U-shaped frame, and the output shafts of the two driving motors are connected to the two driving rods through two No. 1 driving belts respectively.

[0017] As a further solution of the present invention: the locking mechanism of the opening and closing mechanism includes two toothed ring parts arranged on the U-shaped frame, and two gears meshing with the toothed ring parts are rotatably installed on the inner wall of the base, and the gears are provided with winding grooves, and the winding grooves are connected to the elastic components installed in the base;

[0018] The base and the U-shaped frame are also equipped with locking components.

[0019] As a further solution of the present invention: a No. 1 locking plate is also slidably mounted on one side of the U-shaped frame, and the No. 1 locking plate cooperates with a locking groove provided on the base.

[0020] As a further solution of the present invention: the elastic component includes a No. 2 traction rope with one end wound into the winding groove, a sliding member is fixed to the other end of the No. 2 traction rope, the sliding member is slidably connected to the inner wall of the base, a fixing member is slidably sleeved on the No. 2 traction rope, and a No. 1 spring is sleeved on the No. 2 traction rope, the No. 1 spring is located between the fixing member and the dual-axis motor, and the two ends of the No. 1 spring are respectively fixed to the sliding member and the fixing member;

[0021] The sliding member is arranged in parallel with the fixing member, and the sliding member is connected to the damping member installed on the inner wall of the U-shaped frame.

[0022] As a further solution of the present invention: the damping element comprises a one-way damping element;

[0023] A one-way damping chamber is arranged in the middle of the one-way damping member, and piston chambers are arranged at both ends of the one-way damping chamber, and pistons are sealed and slidably installed in the two piston chambers. The two pistons are coaxially fixed to a transmission frame slidably installed on the inner wall of the base, and the transmission frame is fixed to the sliding member;

[0024] The one-way damping chamber and the piston chamber are filled with liquid, and the liquid is accelerated when moving toward the tail of the base, and decelerated when moving toward the tail of the base.

[0025] As a further solution of the present invention: two shock absorbing platforms matched with the U-shaped frame are symmetrically fixed in the base.

[0026] As a further solution of the present invention: the locking assembly includes two stoppers fixed on both sides of the U-shaped frame, and rectangular grooves are provided on opposite sides of the two stoppers;

[0027] Through slots are provided on both sides of the base, and a No. 2 locking plate is slidably installed in the through slots. An inclined portion is provided on the opposite side of the two No. 2 locking plates, and two guide rods are fixed on the opposite side of the two inclined portions, and a No. 2 spring is sleeved on the guide rods;

[0028] Baffles are fixed on opposite sides of the two through slots, the guide rod passes through the baffles and slides with the baffles, the two ends of the No. 2 spring are respectively fixed to the No. 2 locking plate and the baffle, and the No. 2 locking plate is connected to an unlocking component installed on the base.

[0029] As a further solution of the present invention: the unlocking assembly includes winding rollers rotatably mounted on both sides of the base, a No. 1 traction rope is wound around the winding rollers, the other end of the No. 1 traction rope is fixed to the No. 2 locking plate, and limiting wheels for limiting the No. 1 traction rope are rotatably mounted on both sides of the base;

[0030] Transmission gear rings are rotatably mounted on both sides of the U-shaped frame. The transmission gear rings have toothed portions, which mesh with driven gears coaxially fixed on the winding roller. The two transmission gear rings are connected via a force generating member.

[0031] As a further solution of the present invention: a frame groove is provided on the base.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The driving mechanism can achieve a faster moving speed. Since the motor of this structure is fixed on the frame, in the print head 3D printer, the motor is generally the largest source of inertia. When the motor does not follow the movement at the execution end, the execution end has a smaller inertia, so it can adapt to a faster speed.

[0034] Second, the locking mechanism of the opening and closing mechanism can realize the slow and automatic flipping from the horizontal state to the vertical state, thereby solving the problem of collision caused by fast flipping speed. Since it is automatic flipping, the possibility of misoperation is avoided;

[0035] Secondly, the slow flipping is only for flipping from the horizontal state to the vertical state, while there is no damping when flipping from the vertical state to the horizontal state, so it can be completed quickly when folding;

[0036] 3. The cooperation between the locking assembly and the opening and closing mechanism can achieve stability in a horizontal state, that is, an unfolded state, and the triggered automatic opening can be achieved through the unlocking assembly in the locking assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of the portable folding 3D printer.

[0038] Figure 2 for Figure 1 Schematic diagram of the structure in another direction.

[0039] Figure 3 Schematic diagram of the structure inside the U-shaped frame of a portable folding 3D printer.

[0040] Figure 4 for Figure 3 Schematic diagram of the structure in another direction.

[0041] Figure 5 This is a schematic diagram of the structure of the driving mechanism in a portable foldable 3D printer.

[0042] Figure 6 This is a schematic diagram of the structure of the locking mechanism of the opening and closing mechanism in a portable folding 3D printer.

[0043] Figure 7 for Figure 6 Schematic diagram of the structure from another angle.

[0044] Figure 8 for Figure 7 Schematic diagram of folding.

[0045] Fig. 9 for Figure 8 A partial enlarged view of point A in the middle.

[0046] Fig.10Schematic diagram of the structure of the elastic component in the portable folding 3D printer.

[0047] Fig.11 for Fig.10 A partial enlarged view of point B in the middle.

[0048] Fig.12 Schematic diagram of the structure of the unlocking components in the portable folding 3D printer.

[0049] Fig.13 for Fig.12 A partial enlarged view of point C in the middle.

[0050] Fig.14 A cross-sectional view of a one-way damping element in a portable foldable 3D printer.

[0051] Fig.15 for Fig.14 A partial enlarged view of point D in the middle.

[0052] Fig.16 This is a schematic diagram of the structure of the transmission ring gear and the driven gear in the portable folding 3D printer.

[0053] Fig.17 for Fig.16 A partial enlarged view of point E in the middle.

[0054] Fig.18 Schematic diagram of the rectangular groove of the limiter in the portable folding 3D printer.

[0055] Fig.19 for Fig.18 A partial enlarged view of point F in the middle.

[0056] Fig. 20 Schematic diagram of the structure of the magnetic plate in the portable folding 3D printer.

[0057] In the figure: 1, base; 101, frame slot; 2, U-shaped frame; 201, gear ring; 202, limiter; 3, print head; 4, hot bed plate; 401, magnetic plate; 402, mounting plate; 5, No. 1 slide rail; 501, No. 1 synchronous belt; 502, No. 1 slider; 503, No. 1 tensioner; 504, No. 1 adjustment knob; 6, No. 2 slide rail; 601, No. 2 slider; 602, No. 3 slide rail; 603, No. 3 slider; 7, dual-axis motor; 8, transmission rod; 801, No. 1 transmission belt; 802, No. 2 synchronous belt; 803, No. 2 tensioner; 804, No. 2 adjustment knob; 805, transmission member; 806, driving motor; 807, synchronous belt roller; 9, gear; 901, winding groove; 10, No. 1 locking plate; 11, force member; 1101, transmission gear ring; 12, winding roller; 1201, driven gear; 13, No. 1 traction rope; 14, limiting wheel; 15, one-way damping member; 1501, one-way damping chamber; 1502, piston chamber; 1503, piston; 16, transmission frame; 17, sliding member; 1701, No. 1 spring; 1702, fixing member; 1703, No. 2 traction rope; 18, No. 2 locking plate; 1801, inclined portion; 1802, guide rod; 1803, No. 2 spring. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0059] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0060] For example, see Figures 1 to 20 A portable foldable 3D printer comprises a base 1 and a U-shaped frame 2 rotatably mounted on the base 1, wherein a frame slot 101 is provided on the base 1;

[0061] Two No. 1 slide rails 5 are fixed in the base 1, and No. 1 sliders 502 are slidably mounted on the two No. 1 slide rails 5. The two No. 1 sliders 502 are fixed with mounting plates 402, and the mounting plates 402 are detachably mounted with magnetic plates 401 by bolts, and the magnetic plates 401 are adsorbed with the hot bed plate 4;

[0062] A double-axis motor 7 is fixed between the two No. 1 slide rails 5 on the side away from the frame slot 101, and a No. 1 tensioning piece 503 is also fixed on both sides of the frame slot 101. The two conveying shafts of the double-axis motor 7 are connected to the No. 1 tensioning piece 503 through a No. 1 synchronous belt 501, and the two No. 1 synchronous belts 501 respectively fix two No. 1 sliders 502;

[0063] Two No. 2 slide rails 6 are symmetrically fixed in the U-shaped frame 2, and No. 2 sliders 601 are slidably mounted on the two No. 2 slide rails 6. The two No. 2 sliders 601 are connected by a No. 3 slide rail 602, and a No. 3 slider 603 is slidably mounted on the No. 3 slide rail 602. The No. 3 slider 603 is mounted with a print head 3, and the No. 3 slider 603 is connected to a driving mechanism installed in the U-shaped frame 2;

[0064] The base 1 and the U-shaped frame 2 are also connected by means of an opening and closing mechanism and a locking mechanism.

[0065] In the embodiment of the present invention, the base 1 and the U-shaped frame 2 can be closed with ease and opened with damping by means of an opening and closing locking mechanism, and corresponding structures are provided for locking in both the opening and closing states;

[0066] The third slide rail 602 realizes the vertical movement and guides the movement through the sliding cooperation between the second slider 601 and the second slide rail 6, and the print head 3 realizes the parallel sliding through the third slider 603, and drives the print head 3 to perform vertical / parallel movement when the driving mechanism is working;

[0067] When the dual-axis motor 7 is working, the output shafts at both ends drive the No. 1 synchronous belt 501 to convey, and when the No. 1 synchronous belt 501 is conveying, it drives the No. 1 slider 502 to slide along the No. 1 slide rail 5. When the No. 1 slider 502 moves, it drives the mounting plate 402 to move, thereby realizing the movement of the mounting plate 402, the magnetic plate 401, and the hot bed plate 4 along the track of the No. 1 slide rail 5. Since the printed objects will be adhered to the hot bed plate 4 to a certain extent, in order to facilitate removal, the hot bed plate 4 is detachably mounted on the mounting plate 402 by magnet adsorption;

[0068] It should also be noted that a plurality of foot pads are fixed to the bottom of the base 1 to improve the stability of the base 1 during operation, and the function of the frame groove 101 is to locate the print head 3 in the frame groove 101 when the base 1 and the U-shaped frame 2 are combined.

[0069] The driving mechanism includes two transmission rods 8 rotatably mounted in the U-shaped frame 2, two belt rollers are coaxially mounted on the two transmission rods 8, and synchronous belt rollers 807 are also mounted on the two No. 2 sliders 601. No. 2 tensioning members 803 are also fixed on both sides of the U-shaped frame 2, and a No. 2 adjusting knob 804 for adjusting the No. 2 tensioning member 803 is mounted at the bottom of the No. 2 tensioning member 803;

[0070] like Figure 3-Figure 5 As shown, one of the belt rollers on the two transmission rods 8 and one of the synchronous belt rollers 807 and one of the second tensioning members 803 are connected via a second synchronous belt 802, and another belt roller on the two transmission rods 8 and another synchronous belt roller 807 and another second tensioning member 803 are connected via another second synchronous belt 802;

[0071] A transmission member 805 is also fixed on the second tensioning member 803, and both ends of the two second synchronous belts 802 are fixed to the transmission member 805;

[0072] Two driving motors 806 are also fixed on the top of the U-shaped frame 2, and the output shafts of the two driving motors 806 are connected to the two driving rods 8 through two No. 1 driving belts 801 respectively.

[0073] In the embodiment of the present invention, the two drive motors 806 work in coordination and have two working states:

[0074] State 1: The output shafts of the two driving motors 806 rotate in the same direction. When the output shafts of the two No. 2 synchronous belts 802 rotate in the same direction, the No. 1 transmission belt 801 drives the two transmission rods 8 to rotate in the same direction, and then the No. 2 synchronous belt 802 drives the transmission member 805 and the print head 3 to move left and right, that is, X-axis movement;

[0075] State 2: The output shafts of the two driving motors 806 rotate relative to each other. When the output shafts of the two No. 2 synchronous belts 802 rotate relative to each other, the No. 1 transmission belt 801 drives the two transmission rods 8 to rotate relative to each other. Then, the No. 2 synchronous belt 802 drives the transmission member 805 and the print head 3 to move up and down, that is, Y-axis movement.

[0076] It has a faster speed. Since the motor of this structure is fixed on the frame, in the 3D printing of the print head, the motor is generally the largest source of inertia. When the motor does not follow the movement of the execution end, the execution end has a smaller inertia, so it can adapt to a faster speed;

[0077] Secondly, in the present invention, the print head 3 is limited and guided by the slide rail and the slider when moving in the Y-axis and the X-axis, and the accuracy and stability of the movement are relatively high.

[0078] Secondly, since the transmission rod 8 needs to have a certain tension force during transmission, the tension of the No. 2 synchronous belt 802 can be adjusted by rotating the No. 2 adjustment knob 804. The corresponding No. 1 adjustment knob 504 in the present invention has the same effect. The tension of the No. 1 synchronous belt 501 can be adjusted by the No. 1 adjustment knob 504.

[0079] Embodiment 2 is distinguished from Embodiment 1 in that: the locking mechanism of the opening and closing mechanism comprises two toothed ring parts 201 arranged on the U-shaped frame 2, two gears 9 meshing with the toothed ring parts 201 are rotatably mounted on the inner wall of the base 1, and a winding groove 901 is provided on the gear 9, and the winding groove 901 is connected to the elastic component installed in the base 1;

[0080] The base 1 and the U-shaped frame 2 are also equipped with locking components.

[0081] In the embodiment of the present invention, when the U-shaped frame 2 is normally stored and carried, it is in a folded state, that is, in a horizontal state, and is locked and fixed by a locking assembly to ensure stability when carried;

[0082] When unfolding, the locking assembly is manually driven to unlock, so that the U-shaped frame 2 is driven to flip to an upright state under the action of the elastic assembly to complete the unfolding of the U-shaped frame 2. When the U-shaped frame 2 is flipped and unfolded, the collar and the print head 3 installed on the U-shaped frame 2 are driven to flip.

[0083] A locking plate 10 is also slidably mounted on one side of the U-shaped frame 2 , and the locking plate 10 cooperates with a locking groove 1001 provided on the base 1 .

[0084] In the embodiment of the present invention, when the U-shaped frame 2 is in a horizontal state, that is, when it is turned over, the printer can be taken out of the carrying bag through the first locking plate 10, and the printer is in a tilted state when taken out;

[0085] When the U-shaped frame 2 is flipped to the upright state, the first locking plate 10 is vertically lowered to the lowest position under the action of gravity, so that the first locking plate 10 enters the locking groove 1001, and the U-shaped frame 2 is limited by the limiting cooperation between the locking groove 1001 and the first locking plate 10, so that the U-shaped frame 2 enters the locked state after flipping, ensuring its stability during the printing process;

[0086] When folding, that is, flipping the U-shaped frame 2 from an upright state to a horizontal state, the No. 1 locking plate 10 is manually pulled to pull the top of the U-shaped frame 2 to release the cooperation between the lock slot 1001 and the No. 1 locking plate 10, so that the U-shaped frame 2 can be flipped in the opposite direction, and the No. 1 locking plate 10 can be used as a force point. Because the present invention is a foldable and easy-to-carry printing device, its rigidity is slightly lower than that of a normal printer in order to reduce gravity. In order to avoid slight bending that leads to reduced printing quality, force is applied through the No. 1 locking plate 10 so that both sides of the U-shaped frame 2 are subjected to force at the same time to disperse the force.

[0087] The elastic component includes a No. 2 traction rope 1703 with one end wound into the winding groove 901, a sliding member 17 is fixed to the other end of the No. 2 traction rope 1703, the sliding member 17 is slidably connected to the inner wall of the base 1, and a fixing member 1702 is also slidably sleeved on the No. 2 traction rope 1703. A No. 1 spring 1701 is also sleeved on the No. 2 traction rope 1703, and the No. 1 spring 1701 is located between the fixing member 1702 and the dual-axis motor 7, and the two ends of the No. 1 spring 1701 are respectively fixed to the sliding member 17 and the fixing member 1702;

[0088] The sliding member 17 is arranged in parallel with the fixing member 1702 , and the sliding member 17 is connected to the damping member installed on the inner wall of the U-shaped frame 2 .

[0089] In the embodiment of the present invention, when the U-shaped frame 2 is flipped to a horizontal state, the gear 9 is driven to rotate by the meshing of the toothed ring portion 201 and the gear 9, and the No. 2 traction rope 1703 is wound up when the gear 9 rotates. When the No. 2 traction rope 1703 is wound up, the sliding member 17 is pulled toward the fixing member 1702, and the No. 1 spring 1701 is compressed at the same time, so that the No. 1 spring 1701 reserves elastic potential energy, and the U-shaped frame 2 is locked and fixed by the locking assembly when the U-shaped frame 2 is flipped to the end of the stroke;

[0090] The elastic potential energy stored in the No. 1 spring 1701 is used to provide power when the U-shaped frame 2 is flipped open (from a horizontal state to an upright state).

[0091] The damping member includes a one-way damping member 15;

[0092] A one-way damping chamber 1501 is provided in the middle of the one-way damping member 15, and piston chambers 1502 are provided at both ends of the one-way damping chamber 1501, and pistons 1503 are sealed and slidably installed in the two piston chambers 1502. The two pistons 1503 are coaxially fixed to a transmission frame 16 slidably installed on the inner wall of the base 1, and the transmission frame 16 is fixed to the sliding member 17;

[0093] The one-way damping chamber 1501 and the piston chamber 1502 are filled with liquid, and the liquid is accelerated when moving toward the tail of the base 1, and decelerated when moving toward the tail of the base 1.

[0094] In the embodiment of the present invention, when the U-shaped frame 2 is opened, the U-shaped frame 2 is flipped from a horizontal state to an upright state, and the locking assembly is driven to unlock, so as to release the elastic potential energy of the No. 1 spring 1701 to drive the sliding member 17 to reset, so as to pull the No. 2 traction rope 1703 when the sliding member 17 is reset, thereby driving the gear 9 to unwind, and the rotation of the gear 9 during unwinding drives the U-shaped frame 2 to flip through the meshing with the gear ring part 201;

[0095] Due to the special setting of the one-way damping chamber 1501, the sliding member 17 generates resistance due to the deceleration of the liquid flow when the elastic potential energy of the No. 1 spring 1701 is reset, so that the elastic potential energy of the No. 1 spring 1701 is slowly released, thereby making the U-shaped frame 2 slowly flip from the horizontal state to the vertical state. The difference with the first embodiment is that the first embodiment directly drives the U-shaped frame 2 to flip from the horizontal state to the vertical state by manual operation. During the flipping process, due to the different force exerting methods of different users, collision occurs, resulting in displacement of other debugged parts and deformation of the U-shaped frame 2.

[0096] In this embodiment, the U-shaped frame 2 is in an upright state after the lock is released, which can solve the problems existing in the embodiment and is more labor-saving and more automated;

[0097] Among them, the damping in the present invention is mainly achieved by the one-way damping chamber 1501. The one-way damping chamber 1501 is the application of the Tesla valve in the prior art, which has a simple structure, high durability, and stable characteristics. It is very suitable for use in the present invention. Because the present invention is a portable folding device, it needs to be folded repeatedly. If other damping structures are used, wear will occur;

[0098] Secondly, the design principle of the damping in the present invention is that, for the convenience of description, the two piston chambers 1502 are named as chamber No. 1 and chamber No. 2 respectively. When the liquid is in chamber No. 1, the movement of the piston 1503 inside it will transport the liquid to chamber No. 2 through the one-way damping chamber 1501. Similarly, the liquid can also be transported from chamber No. 2 to chamber No. 1. When the liquid is transported through the one-way damping chamber 1501, it is decelerated and accelerated to achieve the one-way damping effect.

[0099] Secondly, the main parts of the present invention are on the U-shaped frame 2, which has a certain weight. The force of the U-shaped frame 2 driven by the two No. 1 springs 1701 is obviously insufficient. Therefore, the toothed ring part 201 and the winding groove 901 of the present invention are set as a small gear, and then when the gear 9 is driven to turn by the two No. 1 springs 1701, the large gear is driven by the small gear to increase the torque;

[0100] Furthermore, the U-shaped frame 2 is automatically turned over from the horizontal state to the vertical state, while it needs to be turned over manually from the vertical state to the horizontal state. Due to the one-way damping, it is more labor-saving when turning over.

[0101] Two shock-absorbing platforms matched with the U-shaped frame 2 are symmetrically fixed in the base 1 .

[0102] In the embodiment of the present invention, since the U-shaped frame 2 is manually flipped from the upright state to the horizontal state, in order to avoid the situation where some people have strong force, shock absorption is performed through a shock absorbing platform to offset the excessive force to a certain extent.

[0103] The locking assembly includes two stoppers 202 fixed on both sides of the U-shaped frame 2, and rectangular grooves are provided on opposite sides of the two stoppers 202;

[0104] Through slots are provided on both sides of the base 1, and a second locking plate 18 is slidably installed in the through slots. An inclined portion 1801 is provided on the opposite side of the two second locking plates 18, and two guide rods 1802 are fixed on the opposite side of the two inclined portions 1801, and a second spring 1803 is sleeved on the guide rod 1802;

[0105] Baffles are fixed on the opposite sides of the two through grooves, the guide rod 1802 passes through the baffles and slides with the baffles, the two ends of the No. 2 spring 1803 are respectively fixed to the No. 2 locking plate 18 and the baffle, and the No. 2 locking plate 18 is connected to the unlocking component installed on the base 1.

[0106] In an embodiment of the present invention, when the U-shaped frame 2 is reversed from an upright state to a horizontal state, the limit member 202 contacts the inclined portion 1801 of the No. 2 locking plate 18 when it is about to flip to the end of the stroke, and the two inclined portions 1801 are driven to move in opposite directions to make way through the cooperation between the limit member 202 and the inclined portion 1801. When the No. 2 locking plate 18 moves in the opposite direction, the No. 2 spring 1803 is compressed so that the No. 2 spring 1803 reserves i elastic potential energy. When the U-shaped frame 2 and the limit member 202 are flipped to the end of the stroke, the rectangular groove of the limit member 202 coincides with the No. 2 locking plate 18, so as to drive the two inclined portions 1801 to move relative to each other by releasing the elastic potential energy of the inclined portions 1801, so as to be inserted into the rectangular groove of the limit member 202 to limit the limit member 202 and the U-shaped frame 2, so that the U-shaped frame 2 will not flip in the opposite direction due to the elastic potential energy of the No. 1 spring 1701.

[0107] The unlocking assembly includes a winding roller 12 rotatably mounted on both sides of the base 1, a No. 1 traction rope 13 is wound around the winding roller 12, the other end of the No. 1 traction rope 13 is fixed to a No. 2 locking plate 18, and limiting wheels 14 for limiting the No. 1 traction rope 13 are rotatably mounted on both sides of the base 1;

[0108] Transmission gear rings 1101 are rotatably mounted on both sides of the U-shaped frame 2 . The transmission gear rings 1101 have teeth that mesh with a driven gear 1201 coaxially fixed on the winding roller 12 . The two transmission gear rings 1101 are connected via a force member 11 .

[0109] In the embodiment of the present invention, when unlocking, the force-generating member 11 is manually driven to flip by external force. When the force-generating member 11 flips, the toothed portion of the transmission gear ring 1101 is meshed with the driven gear 1201 to drive the winding roller 12 to rotate. When the winding roller 12 rotates, the No. 1 traction rope 13 is wound up, so that the No. 1 traction rope 13 pulls the two No. 2 locking plates 18 to move in opposite directions, so that the No. 2 locking plates 18 release the rectangular groove of the limiting member 202, and the external force can be released after the seal is released;

[0110] The two No. 2 locking plates 18 still compress the No. 2 spring 1803 when they move in opposite directions, and the elastic potential energy during compression can be released to drive the two No. 2 locking plates 18 to move relative to each other, thereby pulling the No. 1 traction rope 13 to unwind the winding roller 12, so that the winding roller 12 and the driven gear 1201 rotate in the opposite direction, and correspondingly drive the transmission gear ring 1101 and the force member 11 to rotate in the opposite direction, so as to realize the reset of the force member 11 after the locking state is released;

[0111] It should be noted that the transmission gear ring 1101 and the driven gear 1201 are gear transmission parts, that is, wearing parts, and need to be replaced within a certain period of time. After wear, only the force member 11, the transmission gear ring 1101 and the driven gear 1201 need to be replaced, which is simpler to replace. Since the winding roller 12 and the No. 1 traction rope 13 are not easy to wear parts, the replacement efficiency is relatively low. If the force member 11 is directly connected to the winding roller 12, the locking-related components need to be removed during replacement, and the locking-related components are small in size and not easy to operate.

[0112] 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.

[0113] 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 portable folding 3D printer, characterized in that: include: A base (1) and a U-shaped frame (2) rotatably mounted on the base (1); Two No. 1 slide rails (5) fixed in the base (1), a No. 1 slider (502) being slidably mounted on the two No. 1 slide rails (5), a mounting plate (402) being fixed on the two No. 1 sliders (502), a magnetic plate (401) being detachably mounted on the mounting plate (402) via bolts, and a hot bed plate (4) being adsorbed on the magnetic plate (401); A double-axis motor (7) is fixed between the two No. 1 slide rails (5), and two No. 1 tensioning members (503) are also fixed in the base (1). The two conveying shafts of the double-axis motor (7) are connected to the two No. 1 tensioning members (503) via a No. 1 synchronous belt (501), and the two No. 1 synchronous belts (501) respectively fix the two No. 1 slide blocks (502); Two No. 2 slide rails (6) are symmetrically fixed in the U-shaped frame (2), and a No. 2 slider (601) is slidably mounted on each of the two No. 2 slide rails (6), and the two No. 2 sliders (601) are connected via a No. 3 slide rail (602), and a No. 3 slider (603) is slidably mounted on the No. 3 slide rail (602), and a print head (3) is mounted on the No. 3 slider (603), and the No. 3 slider (603) is connected to a driving mechanism mounted in the U-shaped frame (2); The base (1) and the U-shaped frame (2) are also connected via an opening and closing mechanism and a locking mechanism; The locking mechanism of the opening and closing mechanism comprises two toothed ring parts (201) arranged on the U-shaped frame (2); two gears (9) meshing with the toothed ring parts (201) are rotatably mounted on the inner wall of the base (1); a winding groove (901) is formed on the gear (9); and the winding groove (901) is connected to an elastic component mounted in the base (1); The base (1) and the U-shaped frame (2) are also equipped with locking components; A first locking plate (10) is also slidably mounted on one side of the U-shaped frame (2), and the first locking plate (10) cooperates with a locking groove (1001) provided on the base (1); The elastic component comprises a No. 2 traction rope (1703) with one end wound into the winding groove (901), a sliding member (17) is fixed to the other end of the No. 2 traction rope (1703), the sliding member (17) is slidably connected to the inner wall of the base (1), a fixing member (1702) is slidably sleeved on the No. 2 traction rope (1703), a No. 1 spring (1701) is sleeved on the No. 2 traction rope (1703), the No. 1 spring (1701) is located between the fixing member (1702) and the dual-axis motor (7), and the two ends of the No. 1 spring (1701) are respectively fixed to the sliding member (17) and the fixing member (1702); The sliding member (17) is arranged in parallel with the fixing member (1702), and the sliding member (17) is connected to a damping member installed on the inner wall of the U-shaped frame (2); The damping element comprises a one-way damping element (15); A one-way damping chamber (1501) is provided in the middle of the one-way damping member (15), and piston chambers (1502) are provided at both ends of the one-way damping chamber (1501) and are connected thereto, and pistons (1503) are sealed and slidably mounted in the two piston chambers (1502), and the two pistons (1503) are coaxially fixed to a transmission frame (16) slidably mounted on the inner wall of the base (1), and the transmission frame (16) is fixed to the sliding member (17); The one-way damping chamber (1501) and the piston chamber (1502) are filled with liquid, and the liquid is accelerated when moving toward the tail of the base (1), and decelerated when moving in the opposite direction.

2. A portable foldable 3D printer according to claim 1, characterized in that: Two shock-absorbing platforms cooperating with the U-shaped frame (2) are symmetrically fixed in the base (1).

3. A portable foldable 3D printer according to claim 2, characterized in that: The locking assembly comprises two limiting members (202) fixed on both sides of the U-shaped frame (2), and rectangular grooves are provided on opposite sides of the two limiting members (202); Through slots are provided on both sides of the base (1), and a second locking plate (18) is slidably mounted in the through slots. An inclined portion (1801) is provided on opposite sides of the two second locking plates (18), and two guide rods (1802) are fixed on opposite sides of the two inclined portions (1801), and a second spring (1803) is sleeved on the guide rods (1802); Baffles are fixed on opposite sides of the two through slots, the guide rod (1802) passes through the baffles and slidably cooperates with the baffles, the two ends of the No. 2 spring (1803) are respectively fixed to the No. 2 locking plate (18) and the baffle, and the No. 2 locking plate (18) is connected to an unlocking component installed on the base (1).

4. A portable foldable 3D printer according to claim 3, characterized in that: The unlocking assembly comprises a winding roller (12) rotatably mounted on both sides of the base (1), a No. 1 traction rope (13) being wound around the winding roller (12), the other end of the No. 1 traction rope (13) being fixed to the No. 2 locking plate (18), and limiting wheels (14) for limiting the position of the No. 1 traction rope (13) being rotatably mounted on both sides of the base (1); Transmission gear rings (1101) are rotatably mounted on both sides of the U-shaped frame (2). The transmission gear rings (1101) have toothed portions, which mesh with a driven gear (1201) coaxially fixed to the winding roller (12). The two transmission gear rings (1101) are connected via a force generating member (11).

5. A portable foldable 3D printer according to claim 1, characterized in that The base (1) is provided with a frame groove (101).

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