CN113524669B

CN113524669B - Powder falling and scraping structure suitable for double-laser printing equipment

Info

Publication number: CN113524669B
Application number: CN202110769165.5A
Authority: CN
Inventors: 吕忠利; 王崇; 矫滢; 温武汉
Original assignee: Shandong Charmray Laser Technology Co ltd
Current assignee: Shandong Charmray Laser Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2023-05-16
Anticipated expiration: 2041-07-07
Also published as: CN113524669A

Abstract

The invention discloses a powder falling and scraping structure suitable for double-laser printing equipment in the technical field of 3D printing, which comprises a support frame, wherein a power mechanism is fixedly arranged on the support frame, a storage box and a printing box are arranged at the upper end of the power mechanism, a material receiving box is arranged at the left side of the storage box, a stabilizing plate is fixedly arranged at the upper end of the material receiving box, and a transmission mechanism is fixedly arranged at the left side of the upper end surface of the stabilizing plate; the right side of the transmission mechanism is provided with a feeding mechanism; a scraping box is arranged on the right side of the material supplementing mechanism, and a stirring mechanism is arranged in the scraping box; the lower end of the scraping box is provided with a conical scraping hopper in a sliding manner, and the right side of the scraping box is provided with a vibration mechanism; a trowelling mechanism is arranged on the right side of the vibration mechanism; lifting mechanisms are fixedly arranged on the conical scraping hopper and the vibration mechanism; a trigger is arranged on the right side of the trowelling mechanism; the problems that the quantity of the powder is too small, the powder cannot be supplemented timely when the powder is scraped by the conventional equipment, the thickness of the scraped powder layer is uneven, the scraped powder is loose, and the printing quality is reduced are solved.

Description

Powder falling and scraping structure suitable for double-laser printing equipment

Technical Field

The invention relates to the technical field of 3D printing, in particular to a powder falling and scraping structure suitable for double-laser printing equipment.

Background

The 3D printer is also called a three-dimensional printer, and is a machine for accumulating manufacturing technology, namely, rapid prototyping technology. The laser sintering technology adopts laser to selectively sinter and fix powder in layers, and the sintered and molded curing layers are laminated to form the part with the required shape.

In the prior art, when the powder scraping mechanism works, the thickness of each printing is different because the structure of the printing layer is different when each printing is performed, so that the powder scraping amount of the powder scraping mechanism is different when each printing is performed, and the powder scraping mechanism is usually a plate; only possess simple powder scraping function, when the thickness that scrapes the powder changes, scrape the powder board and can not possess every thickness and all scrape the even effect of powder, the texture is even, corresponds, leads to, the easy condition that prints the piece breach that appears when actual laser printing, or print the piece intensity insufficient.

Based on the above, the invention designs a powder falling and scraping structure suitable for double-laser printing equipment to solve the above problems.

Disclosure of Invention

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a fall powder and scrape powder structure suitable for dual laser printing equipment, includes the support frame, fixedly be equipped with the power unit by PLC control on the support frame, the power unit upper end is equipped with storage box and printing box, the printing box side is equipped with and connects the workbin, connect the workbin upper end fixedly to be equipped with the stabilizer plate, the stabilizer plate up end left side is fixed to be equipped with and is used for providing the drive mechanism of power source for scraping powder; the right side of the transmission mechanism is provided with a material supplementing mechanism which is used for enabling powder to be recycled in time; the right side of the material supplementing mechanism is provided with a material scraping box which is arranged on the transmission mechanism in a sliding way, and a stirring mechanism which enables powder in the material scraping box to keep fluidity all the time is arranged in the material scraping box; the lower end of the scraping box is provided with a conical scraping hopper in a sliding manner, and the right side of the scraping box is provided with a vibration mechanism capable of uniformly compacting and flattening powder; a screeding mechanism for screeding the powder is arranged on the right side of the vibration mechanism; lifting mechanisms for improving powder scraping efficiency are also fixedly arranged on the conical scraping hopper and the vibration mechanism; the right side of the trowelling mechanism is provided with a trigger (the directions are shown in the directions of the whole text and the figure 1).

As a further scheme of the invention, the stirring mechanism comprises a gear, the gear is meshed with the transmission mechanism, a rotating shaft is coaxially and fixedly arranged on the end face of the rear side of the gear, the rotating shaft is rotatably arranged in the scraping box, round grooves are symmetrically formed in the circumferential end face of the rotating shaft, a plug rod is further arranged in the rotating shaft in a sliding mode, a pressing strip is arranged at the upper end of the rotating shaft, a first gas spring is fixedly arranged on the upper end face of the pressing strip, the upper end of the first gas spring is fixedly arranged on the upper end face of the inner side of the scraping box, a strip is further fixedly arranged on the upper end face of the pressing strip, and the strip is slidably arranged at the upper end of the scraping box.

As a further scheme of the invention, the vibration mechanism comprises a vibration plate, the upper end surface of the vibration plate is fixedly provided with a second gas spring, the upper end part of the second gas spring is fixedly arranged on the trowelling mechanism, the left end surface of the trowelling mechanism is fixedly provided with a first L-shaped plate, the lower end of the first L-shaped plate is rotatably provided with a long shaft, the rear end of the long shaft is fixedly provided with a cam, the front end of the long shaft is provided with a first driving belt, and the other end of the driving belt is arranged on the rotating shaft.

As a further scheme of the invention, the feeding mechanism comprises a second L-shaped plate, the upper end of the second L-shaped plate is provided with a long groove, an arc plate is arranged in the long groove in a sliding way, and the arc plate is also arranged in a curved groove arranged on the transmission mechanism in a sliding way; a pushing plate is arranged in the arc plate block in a sliding manner, the left end of the pushing plate is arranged in an arc groove formed in the second L-shaped plate in a sliding manner, and the lower end of the arc plate block is provided with the material receiving box; the left end of the scraping box is rotatably provided with a turning plate, the right side of the turning plate is provided with a third air spring, and the lower end of the turning plate is provided with a short square.

As a further scheme of the invention, the trowelling mechanism comprises a connecting plate, the lower end of the connecting plate is rotatably provided with a rotating wheel, the left end face of the connecting plate is provided with a short groove, and the first L-shaped plate is arranged in the short groove in a sliding manner.

As a further scheme of the invention, the lifting mechanism comprises a long plate, the long plate is fixedly arranged on the conical scraping hopper, and the right side end of the long plate is positioned at the lower end of the long shaft; and a trigger plate is fixedly arranged on the connecting plate.

As a further aspect of the present invention, the transmission mechanism includes a motor. The motor is controlled by a PLC, a second transmission belt is arranged on the front side and the rear side of the motor, the scraping box is fixedly arranged on the second transmission belt, and teeth are arranged on the outer end face of the second transmission belt; the inner side of the transmission belt is provided with a guide rail, the inner side of the guide rail is provided with a fixed plate, the fixed plate is provided with a first groove, and the scraping box is arranged in the first groove in a sliding manner; the lower end of the first groove is provided with a second groove, the second groove is formed in the fixing plate and the guide rail, and the rotating shaft is arranged in the second groove in a sliding mode.

Compared with the prior art, the invention has the beneficial effects that:

1. through the arrangement of the vibration mechanism, when the scraping box moves leftwards, the inserted link sliding in the rotating shaft rotates in the scraping box along with the rotating shaft, then the upper end of the inserted link moves to the lower end of the pressing bar, so that the pressing bar pushes the inserted link to move downwards in the rotating shaft, then the lower end of the inserted link is inserted into powder, and the powder in the conical scraping hopper is turned along with the continuous rotation of the rotating shaft, so that the powder keeps fluxion, the powder is prevented from leaking out of the bottom of the conical scraping hopper, the powder cannot be timely compensated in a powder shortage area of the lower end, the powder unevenness at the upper end of the printing box is caused to influence the printing effect, and the effect of uniform and compact scraping thickness quality can be ensured when the thickness of the scraping powder is changed, so that a printing gap is easily generated during laser printing, or the condition that the strength of a printing piece is insufficient is prevented; in order to reduce the shaking of the pressing strip, the inserting rod is stably extruded downwards, so that the strip fixedly connected with the upper end of the pressing strip always vertically slides up and down at the upper end of the scraping box, thereby being beneficial to keeping the pressing strip stable and preventing shaking when contacting with the rotating shaft.

2. Through the setting of the stirring mechanism, when the scraping box moves leftwards, the rotating shaft drives the long shaft, the long shaft drives the cam to rotate, then when the cam rotates, the cam downwards extrudes the rotating plate, and then the vibrating plate downwards extrudes and beats the powder quickly, so that gaps among the powder are reduced, the powder flatness is improved, meanwhile, as the conical scraping hopper is positioned at the left side end of the vibrating plate, powder can flow out of the conical scraping hopper, the concave part can be filled, but the filled powder is loose; at this time, the powder is squeezed and beaten through the vibration plate, so that the filled powder can be fused with the surrounding powder in time, and the printing effect can be improved.

3. Through the setting of scraping the material mechanism to when scraping the magazine and moving to left, the runner of connecting plate lower extreme is rotating when moving to the left this moment and is being smeared the powder, because the runner is located the vibrations board right side, will produce a strip impression on the powder with the edge of vibrations board when vibrations simultaneously, in order to prevent that the impression from influencing the printing effect, the runner is when on the powder this moment, thereby will once smear the upper surface of the powder that has vibrated, because the powder of this moment has received vibrations extrusion, so when the runner passes through the surface of powder this moment, the powder will not be scraped off this moment, thereby be favorable to the impression on powder surface to be smeared, and then be favorable to making improvement printing effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view of the general structure of the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3B according to the present invention;

FIG. 5 is an enlarged schematic view of the structure of FIG. 3 at C in accordance with the present invention;

FIG. 6 is a schematic view of a vibration mechanism according to the present invention;

FIG. 7 is an enlarged schematic view of the structure of FIG. 6D according to the present invention;

FIG. 8 is a schematic view of a cross-section of the interior of a scraping box of the present invention;

FIG. 9 is an enlarged schematic view of the structure of FIG. 8 at E in accordance with the present invention;

FIG. 10 is an enlarged schematic view of the structure of FIG. 8 at F in accordance with the present invention;

fig. 11 is a schematic view of the front end structure of the scraping box of the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

the device comprises a support frame 1, a power mechanism 2, a storage box 3, a printing box 4, a receiving box 5, a long plate 6, a scraping box 7, a conical scraping hopper 8, a trigger 9, a gear 10, a rotating shaft 11, a round groove 12, an inserting rod 13, a pressing strip 14, a first gas spring 15, a long strip 16, a vibration plate 17, a second gas spring 18, a first L-shaped plate 19, a long shaft 20, a cam 21, a first driving belt 22, a second L-shaped plate 23, a long groove 24, an arc-shaped plate 25, a push plate 26, an arc-shaped groove 27, a connecting plate 28, a rotating wheel 29, a short groove 30, a stabilizing plate 31, a motor 32, a second driving belt 33, a guide rail 34, a fixing plate 35, a first groove 36, a second groove 37, a turning plate 38, a third gas spring 39, a short square 40, a triggering plate 41 and a curved groove 42.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-11, the present invention provides a technical solution: the utility model provides a fall powder and scrape powder structure suitable for dual laser printing equipment, includes support frame 1, fixed power unit 2 by PLC control of being equipped with on the support frame 1, power unit 2 upper end is equipped with storage box 3 and prints case 4, it is equipped with material receiving box 5 to print case 4 side, material receiving box 5 upper end is fixed and is equipped with stabilizer plate 31, stabilizer plate 31 up end left side is fixed and is equipped with the drive mechanism that is used for providing power source for scraping powder; the right side of the transmission mechanism is provided with a material supplementing mechanism which is used for enabling powder to be recycled in time; the right side of the material supplementing mechanism is provided with a material scraping box 7, the material scraping box 7 is arranged on the transmission mechanism in a sliding way, and a stirring mechanism which enables powder in the material scraping box 7 to always keep fluidity is arranged in the material scraping box 7; the lower end of the scraping box 7 is provided with a conical scraping hopper 8 in a sliding manner, and the right side of the scraping box 7 is provided with a vibration mechanism capable of uniformly compacting and flattening powder; a screeding mechanism for screeding the powder is arranged on the right side of the vibration mechanism; lifting mechanisms for improving powder scraping efficiency are also fixedly arranged on the conical scraping hopper 8 and the vibration mechanism; the trowelling mechanism is provided on the right side with a trigger 9 (the directions are shown in the directions of fig. 1 at full length).

As a further scheme of the invention, the stirring mechanism comprises a gear 10, the gear 10 is meshed with the transmission mechanism, a rotary shaft 11 is coaxially and fixedly arranged on the end face of the rear side of the gear 10, the rotary shaft 11 is rotatably arranged in the scraping box 7, round grooves 12 are symmetrically formed in the circumferential end face of the rotary shaft 11, a plug rod 13 is also slidably arranged in the rotary shaft 11, a pressing strip 14 is arranged at the upper end of the rotary shaft 11, a first gas spring 15 is fixedly arranged on the upper end face of the pressing strip 14, the upper end of the first gas spring 15 is fixedly arranged on the upper end face of the inner side of the scraping box 7, a strip 16 is also fixedly arranged on the upper end face of the pressing strip 14, and the strip 16 is slidably arranged at the upper end of the scraping box 7; when the scraping box 7 moves leftwards, at the moment, when the rotating shaft 11 arranged in the scraping box 7 rotates to slide leftwards (as shown in fig. 3, 5, 8, 9, 10 and 11, the gear 10 fixedly connected with the front end of the rotating shaft 11 is meshed with teeth at the outer side end of the second transmission belt 33, so that the rotating shaft 11 rotates, then when the rotating shaft 11 rotates, the inserted rod 13 sliding in the rotating shaft 11 rotates along with the rotating shaft 11 in the scraping box 7, then the upper end of the inserted rod 13 moves to the lower end of the pressing strip 14, at the moment, the pressing strip 14 is pushed by the first gas spring 15 downwards, so that the inserted rod 13 moves downwards in the rotating shaft 11, then the lower end of the inserted rod 13 is inserted into powder, and the powder in the conical scraping hopper 8 is turned along with the continuous rotation of the rotating shaft 11, so that the powder is kept flowing property, the powder is prevented from being inconvenient to leak out of the bottom of the conical scraping hopper 8, so that the powder cannot be compensated for the area of the powder shortage at the lower end in time, and the powder on the upper end of the printing box 4 cannot be influenced by the effect of the flat printing; meanwhile, the bottom end part of the inserted link 13 is gradually contacted with the inner end surface of the conical scraping hopper 8 and the inner end surface of the scraping box 7, so that the scraping hopper is gradually contracted towards the rotating shaft 11, meanwhile, along with the rotation of the rotating shaft 11, the pressing bar 14 at the upper end of the rotating shaft 11 is jacked up upwards by the rotating shaft 11, so that the first gas spring 15 is compressed, and meanwhile, in order to enable the pressing bar 14 to reduce shaking, the inserted link 13 is stably pressed downwards, so that the strip 16 fixedly connected with the upper end of the pressing bar 14 always vertically slides up and down at the upper end of the scraping box 7, thereby being beneficial to keeping the pressing bar 14 stable and preventing shaking when contacting with the rotating shaft 11.

As a further scheme of the invention, the vibration mechanism comprises a vibration plate 17, a second gas spring 18 is fixedly arranged on the upper end surface of the vibration plate 17, the upper end part of the second gas spring 18 is fixedly arranged on the trowelling mechanism, a first L-shaped plate 19 is fixedly arranged on the left end surface of the trowelling mechanism, a long shaft 20 is rotatably arranged at the lower end of the first L-shaped plate 19, a cam 21 is fixedly arranged at the rear end of the long shaft 20, a first driving belt 22 is arranged at the front end of the long shaft 20, and the other end of the driving belt is arranged on the rotating shaft 11; when the scraping box 7 moves leftwards (shown in fig. 6 and 7), at the moment, when the rotating shaft 11 rotates, the rotating shaft 11 drives the rotating shaft 11 of the long shaft 20 through the first driving belt 22, so that the cam 21 at the rear side end of the long shaft 20 rotates, then when the cam 21 rotates, the cam 21 presses the rotating plate downwards, at the moment, the second gas spring 18 is stretched (the second gas spring 18 plays a reset role for the vibrating plate 17), then the vibrating plate 17 presses and beats powder downwards, so that gaps among the powder are reduced, the powder is further improved, meanwhile, as the conical scraping hopper 8 is positioned at the left side end of the vibrating plate 17, powder can flow out of the conical scraping hopper 8, the concave part can be filled, but the filled powder is loose; at this time, the powder is beaten through the extrusion of the vibration plate 17, so that the filled powder is fused with surrounding powder in time, and the printing effect is improved.

As a further scheme of the invention, the feeding mechanism comprises a second L-shaped plate 23, the upper end of the second L-shaped plate 23 is provided with a long groove 24, an arc-shaped plate 25 is arranged in the long groove 24 in a sliding manner, and the arc-shaped plate 25 is also arranged in a curved groove 42 formed in the transmission mechanism in a sliding manner; a push plate 26 is arranged in the arc-shaped plate 25 in a sliding manner, the left end of the push plate 26 is arranged in an arc groove 27 formed in the second L-shaped plate 23 in a sliding manner, and a material receiving box 5 is arranged at the lower end of the arc-shaped plate 25; the left end of the scraping box 7 is rotatably provided with a turning plate 38, the right side of the turning plate 38 is provided with a third gas spring 39, and the lower end of the turning plate 38 is provided with a short square 40; when in use, when the scraping box 7 moves leftwards (as shown in fig. 3 and 4), the short square block 40 fixedly connected with the left end of the scraping box 7 pushes the arc plate 25 to move leftwards, the arc plate 25 moves upwards in the curved groove 42, the upper end of the arc plate 25 moves upwards in the long groove 24, the push plate 26 slidably arranged in the arc plate 25 moves upwards in the arc groove 27, then the push plate 26 moves upwards along with the push plate 26, so that the push plate 26 slides rightwards in the arc plate 25, powder on the right end surface of the arc plate 25 is pushed rightwards, the turning plate 38 at the left end of the scraping box 7 is turned inwards to the scraping box 7, the third gas spring 39 is compressed (the third gas spring 39 plays a reset role for the turning plate 38), so that the powder on the push plate 26 is fed into the scraping box 7, the powder in the scraping box 7 is timely replenished, and the rest of the powder falls into the material receiving box 5 for collection because the lower end of the arc plate 25 is provided with the material receiving box 5.

As a further scheme of the invention, the trowelling mechanism comprises a connecting plate 28, a rotating wheel 29 is rotatably arranged at the lower end of the connecting plate 28, a short groove 30 is formed in the left end surface of the connecting plate 28, and a first L-shaped plate 19 is arranged in the short groove 30 in a sliding manner; when in use, when the scraping box 7 moves leftwards (shown in fig. 3, 5, 6 and 7), the rotating wheel 29 at the lower end of the connecting plate 28 rotates to level powder when moving leftwards, and as the rotating wheel 29 is positioned on the right side of the vibrating plate 17, the edge of the vibrating plate 17 generates an imprint on the powder when vibrating, so as to prevent the imprint from affecting the printing effect, the rotating wheel 29 levels the upper surface of the vibrated powder once when passing through the powder, and as the powder is pressed by vibration, the powder is not scraped when passing through the surface of the powder, thereby being beneficial to leveling the imprint on the surface of the powder and further improving the printing effect.

As a further scheme of the invention, the lifting mechanism comprises a long plate 6, the long plate 6 is fixedly arranged on the conical scraping hopper 8, and the right side end of the long plate 6 is positioned at the lower end of the long shaft 20; a trigger plate 41 is fixedly arranged on the connecting plate 28; when the scraping box 7 moves leftwards (as shown in fig. 6 and 7), the long plate 6 fixedly connected to the conical scraping hopper 8 is abutted against the side end surface of the arc-shaped plate 25, the long plate 6 is lifted upwards along with the lifting of the arc-shaped plate 25, the conical stop block moves upwards in the scraping box 7, meanwhile, the right end of the long plate 6 lifts the long shaft 20 upwards, the first L-shaped plate 19 fixedly connected to the long shaft 20 moves upwards in the short groove 30 and is adsorbed by the trigger plate 41, and the trigger plate 41 does not adsorb the first L-shaped plate 19 any more until the trigger plate 41 moves rightwards to contact the trigger 9, so that the conical scraping hopper 8 and the vibrating plate 17 are reset; the lower end surfaces of the conical scraping hopper 8 and the vibrating plate 17 move upwards at this moment so as to separate from the upper end surface of the smoothed powder, then when the motor 32 moves leftwards through the second transmission belt 33, the scraping box 7 can reset rightwards quickly, so that the phenomenon that the smoothed powder scrapes out an impression when the conical scraping hopper 8 and the vibrating plate 17 reset rightwards is avoided, the printing effect is influenced, and meanwhile, the conical scraping hopper 8 and the vibrating plate 17 do not contact with the upper end surface of the powder any more at this moment, the resetting can be performed quickly at this moment, and the printing working efficiency is improved.

As a further aspect of the invention, the transmission mechanism includes a motor 32. The motor 32 is controlled by a PLC, the front side and the rear side of the motor 32 are respectively provided with a second driving belt 33, the scraping box 7 is fixedly arranged on the second driving belts 33, and the outer end surfaces of the second driving belts 33 are provided with teeth; the inner side of the transmission belt is provided with a guide rail 34, the inner side of the guide rail 34 is provided with a fixed plate 35, the fixed plate 35 is provided with a first groove 36, and the first groove 36 is internally provided with a scraping box 7 in a sliding manner; the lower end of the first groove 36 is provided with a second groove 37, the fixed plate 35 and the guide rail 34 are provided with the second groove 37, and the second groove 37 is internally provided with the rotating shaft 11; in use, the motor 32 drives the scraping box 7 to move left in the first groove 36 and the second groove 37 through the second transmission belt 33 (as shown in fig. 1 and 2), so that the scraping box 7 keeps stable when scraping powder, the scraping box 7 reciprocates on the guide rail 34, so that the powder at the upper end of the storage box is scraped leftwards, and the powder is scraped into the upper end of the printing box 4 for printing.

Working principle: when printing is needed, the power mechanism 2 on the support frame 1 is controlled by the PLC, then the power mechanism 2 pushes the powder in the storage box 3 to move upwards, then the motor 32 drives the scraping box 7 to move leftwards in the first groove 36 and the second groove 37 through the second transmission belt 33 (shown in combination with fig. 1 and 2), so that the scraping box 7 keeps stable when scraping powder, the scraping box 7 reciprocates on the guide rail 34, so that the powder at the upper end of the storage box is scraped leftwards, and the powder is scraped into the upper end of the printing box 4 for printing; meanwhile, when the scraping box 7 moves leftwards (as shown in fig. 3, 5, 8, 9 and 10), at this time, when the rotating shaft 11 arranged in the scraping box 7 slides leftwards, the gear 10 fixedly connected with the front end part of the rotating shaft 11 is meshed with teeth at the outer side end of the second transmission belt 33, so that the rotating shaft 11 rotates, then when the rotating shaft 11 rotates, the inserted rod 13 sliding in the rotating shaft 11 rotates along with the rotating shaft 11 in the scraping box 7, then the upper end of the inserted rod 13 moves to the lower end of the pressing rod 14, at this time, the pressing rod 14 is pushed downwards by the first gas spring 15, so that the pressing rod 14 pushes the inserted rod 13 downwards in the rotating shaft 11, then the lower end of the inserted rod 13 is inserted into powder, and as the rotating shaft 11 continues to rotate, the powder in the conical scraping hopper 8 is turned over, so that the powder keeps the fluidity, the poor powder fluidity is prevented from being inconvenient to leak from the bottom of the conical scraping hopper 8, so that the powder shortage area at the lower end cannot be compensated in time, and the powder at the upper end of the printing box 4 cannot affect the printing effect; simultaneously, the bottom end part of the inserted link 13 is gradually contacted with the inner end surface of the conical scraping hopper 8 and the inner end surface of the scraping box 7, so that the scraping hopper is gradually contracted towards the rotating shaft 11, simultaneously, along with the rotation of the rotating shaft 11, the pressing bar 14 at the upper end of the rotating shaft 11 is jacked up by the rotating shaft 11, so that the first gas spring 15 is compressed, and meanwhile, in order to reduce the shaking of the pressing bar 14, the inserted link 13 is stably pressed downwards, so that the strip 16 fixedly connected with the upper end of the pressing bar 14 always vertically slides up and down at the upper end of the scraping box 7, thereby being beneficial to keeping the pressing bar 14 stable and preventing shaking when contacting with the rotating shaft 11; then when the scraping box 7 moves leftwards (as shown in fig. 6 and 7), at the moment, when the rotating shaft 11 rotates, the rotating shaft 11 drives the rotating shaft 11 of the long shaft 20 through the first driving belt 22, so that the cam 21 at the rear side end of the long shaft 20 rotates, then when the cam 21 rotates, the cam 21 presses the rotating plate downwards, at the moment, the second gas spring 18 stretches (the second gas spring 18 plays a reset role for the vibrating plate 17), then the vibrating plate 17 presses the flapping powder downwards quickly, so that gaps among the powder are reduced, the powder flatness is improved, and meanwhile, as the conical scraping hopper 8 is positioned at the left side end of the vibrating plate 17, powder can flow out of the conical scraping hopper 8, so that a concave part is filled, but the filled powder is loose; at the moment, the powder is beaten through the extrusion of the vibration plate 17, so that the filled powder can be fused with surrounding powder in time, and the printing effect can be improved; meanwhile, when the scraping box 7 moves leftwards (shown in fig. 3, 5, 6 and 7), the rotating wheel 29 at the lower end of the connecting plate 28 rotates to smear powder when moving leftwards, and as the rotating wheel 29 is positioned on the right side of the vibrating plate 17, the edge of the vibrating plate 17 generates a mark on the powder when vibrating, so as to prevent the mark from influencing the printing effect, the rotating wheel 29 smears the upper surface of the vibrated powder once when passing through the powder, and as the powder is subjected to vibration extrusion, the powder is not scraped at the moment when passing through the surface of the powder, so that the mark on the surface of the powder is smeared, and the printing effect is improved; meanwhile, when the scraping box 7 moves leftwards (as shown in fig. 3 and 4, the short square block 40 fixedly connected with the left side end of the scraping box 7 pushes the arc plate 25 to move leftwards, the arc plate 25 moves upwards in the curved groove 42, the upper end of the arc plate 25 moves upwards in the long groove 24, the push plate 26 arranged in the arc plate 25 in a sliding way moves upwards in the arc groove 27, then the push plate 26 moves upwards along with the push plate 26, so that the push plate 26 slides rightwards in the arc plate 25, powder on the right side end surface of the arc plate 25 is pushed rightwards, the turning plate 38 at the left end of the scraping box 7 is turned inwards towards the scraping box 7, the third gas spring 39 is compressed (the third gas spring 39 plays a reset role for the turning plate 38), so that the powder on the push plate 26 is fed into the scraping box 7 to supplement the powder in the scraping box 7 in time, and meanwhile, the rest of the powder falls into the receiving box 5 to be collected because the lower end of the arc plate 25 is provided with the receiving box 5; meanwhile, when the scraping box 7 moves leftwards (as shown in fig. 6 and 7), the long plate 6 fixedly connected to the conical scraping hopper 8 is abutted against the side end surface of the arc-shaped plate 25, the long plate 6 is lifted upwards along with the lifting of the arc-shaped plate 25, so that the conical stop block moves upwards in the scraping box 7, meanwhile, the right end of the long plate 6 lifts the long shaft 20 upwards, the first L-shaped plate 19 fixedly connected to the long shaft 20 moves upwards in the short groove 30 and is adsorbed by the trigger plate 41, and until the trigger plate 41 does not adsorb the first L-shaped plate 19 any more when the trigger plate 41 moves rightwards to contact the trigger 9, so that the conical scraping hopper 8 and the vibrating plate 17 are reset; the lower end surfaces of the conical scraping hopper 8 and the vibrating plate 17 move upwards at this moment so as to separate from the upper end surface of the smoothed powder, and then when the motor 32 moves leftwards through the second driving belt 33, the scraping box 7 can reset rightwards quickly at this moment, so that the phenomenon that the smoothed powder scrapes out an impression when the conical scraping hopper 8 and the vibrating plate 17 reset rightwards is avoided, and the printing effect is influenced.

Claims

1. The utility model provides a fall powder and scrape powder structure suitable for dual laser printing equipment, includes support frame (1), its characterized in that, fixed power unit (2) by PLC control that are equipped with on support frame (1), power unit (2) upper end is equipped with storage box (3) and prints case (4), it connects workbin (5) to print case (4) side, connect workbin (5) upper end fixed with stabilizer plate (31), stabilizer plate (31) up end left side fixed be equipped with be used for scraping the power source's drive mechanism; the right side of the transmission mechanism is provided with a material supplementing mechanism which is used for enabling powder to be recycled in time; the right side of the feeding mechanism is provided with a scraping box (7), the scraping box (7) is arranged on the transmission mechanism in a sliding way, and a stirring mechanism which enables powder in the scraping box (7) to keep fluidity all the time is arranged in the scraping box (7); the lower end of the scraping box (7) is provided with a conical scraping hopper (8) in a sliding manner, and the right side of the scraping box (7) is provided with a vibration mechanism capable of uniformly compacting and flattening powder; a screeding mechanism for screeding the powder is arranged on the right side of the vibration mechanism; lifting mechanisms for improving powder scraping efficiency are further fixedly arranged on the conical scraping hopper (8) and the vibration mechanism; a trigger (9) is arranged on the right side of the trowelling mechanism;

the feeding mechanism comprises a second L-shaped plate (23), a long groove (24) is formed in the upper end of the second L-shaped plate (23), an arc-shaped plate (25) is arranged in the long groove (24) in a sliding mode, and the arc-shaped plate (25) is further arranged in a bending groove (42) formed in the transmission mechanism in a sliding mode; a push plate (26) is arranged in the arc-shaped plate (25) in a sliding manner, the left end of the push plate (26) is arranged in an arc groove (27) formed in the second L-shaped plate (23) in a sliding manner, and the lower end of the arc-shaped plate (25) is provided with the material receiving box (5); the left end of the scraping box (7) is rotatably provided with a turning plate (38), the right side of the turning plate (38) is provided with a third gas spring (39), and the lower end of the turning plate (38) is provided with a short square block (40); when scraping magazine (7) left motion, short square (40) of magazine (7) left side end fixed connection will promote arc plate (25) left motion this moment, arc plate (25) upward movement in curved groove (42) this moment, arc plate (25) upper end will upward movement in elongated slot (24) simultaneously, push pedal (26) of slip setting in arc plate (25) will upward movement in arc groove (27), then follow push pedal (26) upward movement, thereby push pedal (26) will slide to right side in arc plate (25), thereby with the powder right side terminal surface on arc plate (25) right side propelling movement, then scrape flap (38) of magazine (7) left end and will be inwards turned over in scraping magazine (7) this moment, third gas spring (39) will be compressed, third gas spring (39) play reset effect for flap (38), thereby the powder on push pedal (26) will be sent into scraping magazine (7) in this moment, thereby for scraping the powder in magazine (7) carries out the time connect (5) because of being equipped with the follow-up hopper (5) that follows, the powder in time is connected to the rest of the hopper (5) that will fall down.

2. The powder dropping and scraping structure for a dual laser printing apparatus as recited in claim 1, wherein: the stirring mechanism comprises a gear (10), the gear (10) is meshed with the transmission mechanism, a rotating shaft (11) is fixedly arranged on the end face of the rear side of the gear (10) in a coaxial line, the rotating shaft (11) is rotationally arranged in the scraping box (7), a circular groove (12) is symmetrically formed in the circumferential end face of the rotating shaft (11), an inserting rod (13) is further arranged in the rotating shaft (11) in a sliding mode, a pressing strip (14) is arranged at the upper end of the rotating shaft (11), a first gas spring (15) is fixedly arranged on the upper end face of the pressing strip (14), the upper end of the first gas spring (15) is fixedly arranged on the upper end face of the inner side of the scraping box (7), a strip (16) is fixedly arranged on the upper end face of the pressing strip (16) in a sliding mode, and the upper end of the scraping box (7) is arranged.

3. The powder dropping and scraping structure for a dual laser printing apparatus as recited in claim 2, wherein: the vibration mechanism comprises a vibration plate (17), a second gas spring (18) is fixedly arranged on the upper end face of the vibration plate (17), the upper end part of the second gas spring (18) is fixedly arranged on the trowelling mechanism, a first L-shaped plate (19) is fixedly arranged on the left end face of the trowelling mechanism, a long shaft (20) is rotationally arranged at the lower end of the first L-shaped plate (19), a cam (21) is fixedly arranged at the rear end of the long shaft (20), a first driving belt (22) is arranged at the front end of the long shaft (20), and the other end of the driving belt is arranged on the rotating shaft (11).

4. A powder dropping and scraping structure for a dual laser printing apparatus as recited in claim 3, wherein: the trowelling mechanism comprises a connecting plate (28), a rotating wheel (29) is rotatably arranged at the lower end of the connecting plate (28), a short groove (30) is formed in the left end face of the connecting plate (28), and the first L-shaped plate (19) is arranged in the short groove (30) in a sliding mode.

5. The powder dropping and scraping structure for a dual laser printing apparatus as recited in claim 4, wherein: the lifting mechanism comprises a long plate (6), the long plate (6) is fixedly arranged on the conical scraping hopper (8), and the right side end of the long plate (6) is positioned at the lower end of the long shaft (20); a trigger plate (41) is fixedly arranged on the connecting plate (28).

6. The powder dropping and scraping structure for a dual laser printing device as recited in claim 2, wherein: the transmission mechanism comprises a motor (32), the motor (32) is controlled by a PLC, a second transmission belt (33) is arranged on the front side and the rear side of the motor (32), the scraping box (7) is fixedly arranged on the second transmission belt (33), and teeth are arranged on the outer end face of the second transmission belt (33); the inner side of the second transmission belt is provided with a guide rail (34), the inner side of the guide rail (34) is provided with a fixed plate (35), the fixed plate (35) is provided with a first groove (36), and the scraping box (7) is arranged in the first groove (36) in a sliding manner; the lower end of the first groove (36) is provided with a second groove (37), the second groove (37) is formed in the fixing plate (35) and the guide rail (34), and the rotating shaft (11) is arranged in the second groove (37) in a sliding mode.