阅读说明：本技术 一种3d打印机喷头防堵结构 (3D print head prevents stifled structure ) 是由 邱友莉 黄佳怡 于 2021-07-20 设计创作，主要内容包括：本发明公开了3D打印机技术领域的一种3D打印机喷头防堵结构,包括进料管,所述进料管的顶部开设有进料口,所述进料管的下方设置有喷头,所述喷头通过连接块与进料管固定连接,所述进料管与喷头之间设置有过滤板,所述过滤板上开设有若干个呈圆周阵列分布的过滤孔,且所述过滤板滑动连接在进料管的底部,所述过滤板的侧壁上固定连接有用于其复位的气弹簧,所述进料管的顶部转动连接有第一转轴,所述第一转轴在上下方向上滑动连接有位于进料管内部的滑套,所述滑套的侧壁上转动连接有碾压辊；可以大大降低了喷头堵塞的可能性,可以大大增加喷头的使用寿命。(The invention discloses a 3D printer nozzle anti-blocking structure in the technical field of 3D printers, which comprises a feed pipe, wherein a feed inlet is formed in the top of the feed pipe, a nozzle is arranged below the feed pipe, the nozzle is fixedly connected with the feed pipe through a connecting block, a filter plate is arranged between the feed pipe and the nozzle, a plurality of filter holes distributed in a circumferential array are formed in the filter plate, the filter plate is connected to the bottom of the feed pipe in a sliding manner, an air spring for resetting the filter plate is fixedly connected to the side wall of the filter plate, a first rotating shaft is rotatably connected to the top of the feed pipe, the first rotating shaft is slidably connected with a sliding sleeve positioned in the feed pipe in the vertical direction, and a rolling roller is rotatably connected to the side wall of the sliding sleeve; the possibility of blockage of the spray head can be greatly reduced, and the service life of the spray head can be greatly prolonged.)

1. The utility model provides a 3D print head prevents stifled structure, includes inlet pipe (1), feed inlet (2) have been seted up at the top of inlet pipe (1), the below of inlet pipe (1) is provided with shower nozzle (3), shower nozzle (3) are through connecting block and inlet pipe (1) fixed connection, its characterized in that: a filter plate (4) is arranged between the inlet pipe (1) and the spray head (3), a plurality of filter holes (5) distributed in a circumferential array are formed in the filter plate (4), the filter plate (4) is connected to the bottom of the inlet pipe (1) in a sliding manner, an air spring (6) for resetting the filter plate (4) is fixedly connected to the side wall of the filter plate (4), the top of the inlet pipe (1) is rotatably connected with a first rotating shaft (7), the first rotating shaft (7) is connected with a sliding sleeve (8) positioned inside the inlet pipe (1) in a sliding manner in the up-down direction, a rolling roller (9) is rotatably connected to the side wall of the sliding sleeve (8), the rolling roller (9) is positioned above the filter plate (4), and low sliding chutes (10), middle sliding chutes (11) and high sliding chutes (12) which are positioned above the filter plate (4) and have different heights are formed in the inner wall of the inlet pipe (1), two ends of the low sliding groove (10), the middle sliding groove (11) and the high sliding groove (12) are communicated with each other through chamfers, the low sliding groove (10), the middle sliding groove (11) and the high sliding groove (12) are connected with the rolling roller (9) in a sliding mode, a driving mechanism is arranged on the outer side of the feeding pipe (1), and the driving mechanism is used for driving the first rotating shaft (7) to rotate and driving the filter plate (4) to move.

2. The 3D printer nozzle anti-blocking structure according to claim 1, characterized in that: the driving mechanism comprises a motor (13) and a first rotating wheel (14), the motor (13) is fixedly connected to the top of the inlet pipe (1) through a fixing plate (31), an output shaft of the motor (13) is fixedly connected to the top end of a first rotating shaft (7), the first rotating wheel (14) is located at the top of the inlet pipe (1) and fixedly connected to the first rotating shaft (7), a second rotating wheel (15) is arranged on the side edge of the first rotating wheel (14), a driving belt (16) is jointly connected to the first rotating wheel (14) and the second rotating wheel (15) in a transmission mode, the second rotating wheel (15) is rotatably connected to the outer side wall of the inlet pipe (1) side, a cylindrical cam (17) is fixedly connected to the rotating shaft of the second rotating wheel (15), a cam groove (18) is formed in the cylindrical cam (17), and a convex block (19) is slidably connected to the cam groove (18), lug (19) sliding connection is in the vertical direction of inlet pipe (1) lateral wall, fixedly connected with push rod (20) on the outer wall of lug (19), the below of push rod (20) is provided with triangle kicking block (21), triangle kicking block (21) fixed connection is on the lateral wall of filter (4).

3. The 3D printer nozzle anti-blocking structure according to claim 1, characterized in that: the inner part of the rolling roller (9) is of a hollow structure, a plurality of tamping holes (22) distributed in an array manner are formed in the outer wall of the rolling roller (9) along the circumferential direction, tamping blocks (23) are connected in the tamping holes (22) in a sliding manner, connecting rods (24) are connected on the inner wall of each tamping block (23) in a rotating manner, polygonal sliding rods (25) are connected in the rotating shafts of the rolling roller (9) in a sliding manner, one ends, close to sliding sleeves (8), of the polygonal sliding rods (25) are fixedly connected with first springs (26) for resetting the polygonal sliding rods, the connecting rods (24) are connected on the side walls of the polygonal sliding rods (25) in a rotating manner, hemispherical blocks (27) are fixedly connected at one ends, close to the inner wall of the feeding pipe (1), of the polygonal sliding rods (25), and a plurality of arc-shaped top blocks (28) distributed at equal intervals are arranged in the low sliding grooves (, the arc-shaped top block (28) is used for acting on the hemispherical block (27) to enable the hemispherical block (27) to slide.

4. The 3D printer nozzle anti-blocking structure according to claim 2, characterized in that: the push rod (20) comprises a fixing rod (29) and an E-shaped push block (30), the fixing rod (29) is fixedly connected to the outer wall of the bump (19), the E-shaped push block (30) is fixedly connected to the bottom of the fixing rod (29), and the E-shaped push block (30) is used for acting on the triangular ejector block (21).

5. The 3D printer nozzle anti-blocking structure according to claim 1, characterized in that: the filtering holes (5) are round table-shaped through holes with small upper parts and large lower parts.

6. The 3D printer nozzle anti-blocking structure according to claim 1, characterized in that: the fixing plate (31) is L-shaped.

Technical Field

The invention relates to the technical field of 3D printers, in particular to an anti-blocking structure of a 3D printer nozzle.

Background

The 3D printer is used for performing printing work after melting and extruding the printing silk material. The silk material enters the head through the feeding throat pipe and is heated and melted by the heating device. The feeding throat is usually made of stainless steel material with low heat conductivity, and the spray head is made of brass with high heat conduction rate, so that the melting process of the solid filament material is carried out in the spray head.

Solid-state silk material of prior art is in the melting process, and a bit of great graininess silk material can not in time melt, can block up the silk material blowout that hinders after melting in the nozzle, in case the nozzle is blockked up the back, and 3D prints and can't continue to go on, needs the staff to clear up the shower nozzle, then just can continue to print, can greatly increased print time.

Disclosure of Invention

The invention aims to provide a 3D printer nozzle anti-blocking structure, which solves the problems that some large granular silk materials cannot be melted in time in the melting process of the solid silk materials in the prior art proposed in the background art, the melted silk materials are blocked in a nozzle to prevent the molten silk materials from being sprayed out, once the nozzle is blocked, 3D printing cannot be continued, workers are required to clean the nozzle and then can continue printing, and the printing time is greatly prolonged.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a 3D printer shower nozzle prevents stifled structure, includes the inlet pipe, the feed inlet has been seted up at the top of inlet pipe, the below of inlet pipe is provided with the shower nozzle, the shower nozzle passes through connecting block and inlet pipe fixed connection, be provided with the filter between inlet pipe and the shower nozzle, set up a plurality of on the filter and be the filtration pore of crossing of circumference array distribution, just filter sliding connection is in the bottom of inlet pipe, fixedly connected with is used for its air spring that resets on the lateral wall of filter, the top of inlet pipe is rotated and is connected with first pivot, first pivot is sliding connection has the inside sliding sleeve that is located the inlet pipe in the upper and lower direction, it is connected with the roller to rotate on the lateral wall of sliding sleeve, the roller is located the top of filter, set up on the inner wall of inlet pipe and be located filter plate top and the low spout of co-altitude, The head and tail ends of the low sliding chute, the middle sliding chute and the high sliding chute are communicated in pairs through chamfers, the low sliding chute, the middle sliding chute and the high sliding chute are connected with the rolling roller in a sliding manner, and a driving mechanism is arranged on the outer side of the feeding pipe and used for driving the first rotating shaft to rotate and driving the filter plate to move;

the driving mechanism comprises a motor and a first rotating wheel, the motor is fixedly connected to the top of the feeding pipe through a fixing plate, an output shaft of the motor is fixedly connected with the top end of the first rotating shaft, the first rotating wheel is positioned at the top of the feeding pipe and is fixedly connected with the first rotating shaft, the side edge of the first rotating wheel is provided with a second rotating wheel, the first rotating wheel and the second rotating wheel are jointly connected with a transmission belt in a transmission way, the second rotating wheel is rotationally connected to the outer side wall of the side of the feeding pipe, a cylindrical cam is fixedly connected to the rotating shaft of the second rotating wheel, the cylindrical cam is provided with a cam groove, a convex block is connected in the cam groove in a sliding way and is connected on the vertical direction of the outer side wall of the feeding pipe in a sliding way, a push rod is fixedly connected to the outer wall of the convex block, a triangular ejecting block is arranged below the push rod, and the triangular ejecting block is fixedly connected to the side wall of the filter plate;

during operation, in the process of melting solid silk materials in the prior art, some large granular silk materials cannot be melted in time and can be blocked in a nozzle to prevent the melted silk materials from being sprayed out, once a spray head is blocked, 3D printing cannot be continued, workers need to clean the spray head and then can continue printing, and the printing time can be greatly increased. The first rotating shaft can drive the sliding sleeve to rotate together, the sliding sleeve can drive the rolling roller to rotate together, the rolling roller can sequentially slide in the high sliding groove, the middle sliding groove and the low sliding groove around the first rotating shaft, when the rolling roller sequentially slides in the high sliding groove, the middle sliding groove and the low sliding groove, the distance between the rolling roller and the filter plate can be sequentially reduced, the rolling degree of the rolling roller to the silk material can be increased in a gradient manner, the rolling roller can gradually roll the silk material with larger particles at the top of the filter plate into a size capable of passing through the filter hole, the first rotating shaft can drive the rolling roller to rotate simultaneously, the first rotating shaft can drive the first rotating wheel to rotate together, the first rotating wheel can drive the second rotating wheel to rotate together through a driving belt, the second rotating wheel can drive the cylindrical cam to rotate together, a cam groove on the cylindrical cam can drive a lug to circularly move in the vertical direction of the outer wall of the feeding pipe, the lug can drive the push rod to circularly move in the vertical direction, when the push rod moves downwards to be contacted with the inclined plane of the triangular top block, the push rod can extrude the inclined plane of the triangular top block to enable the triangular top block to move, the triangular top block can drive the filter plate to move at the bottom of the feeding pipe, when the push rod moves upwards to an initial position and is staggered with the triangular top block, the filter plate can return to the initial position under the action of the air spring, through the arrangement of the filter plate, silk materials with larger particles can be intercepted at the bottom of the feeding pipe, the silk materials with larger particles can be prevented from entering the spray head and being incapable of being melted in time to cause the silk materials to block the spray head, and through the arrangement of the rolling roller, the low sliding groove, the middle sliding groove, the high sliding groove and the driving mechanism, the rolling roller can be driven to sequentially slide in the high sliding groove, the middle sliding groove and the low sliding groove through the driving mechanism, so that the silk materials with larger particles on the filter plate can be gradually crushed, until the larger silk material is rolled to the position where the silk material can pass through the filter hole, the situation that the larger silk material particles are accumulated on the filter plate to shield the filter hole and prevent the silk material with smaller particles from entering the spray head can be avoided, meanwhile, the arrangement of the air spring, the triangular top block and the push rod can lead the driving mechanism to drive the filter plate to circularly shake at the bottom of the feeding pipe when the rolling roller moves and rolls, can accelerate particles with smaller particles to enter the spray head through the filter holes, meanwhile, the silk material with larger particles on the filter plate can shake, the silk material particles can be prevented from staying at the same position all the time, the rolling roller can better crush the silk particles, the silk can be fully utilized after entering the feeding pipe, the waste of the silk can be avoided, meanwhile, the possibility of blockage of the spray head is greatly reduced, and the service life of the spray head can be greatly prolonged.

As a further scheme of the invention, the interior of the rolling roller is of a hollow structure, a plurality of tamping holes distributed in an array manner are formed in the outer wall of the rolling roller along the circumferential direction, tamping blocks are connected in the tamping holes in a sliding manner, connecting rods are connected on the inner wall of each tamping block in a rotating manner, a polygonal sliding rod is connected in the rotating shaft of the rolling roller in a sliding manner, one end, close to a sliding sleeve, of each polygonal sliding rod is fixedly connected with a first spring for resetting the polygonal sliding rod, a plurality of connecting rods are connected on the side wall of each polygonal sliding rod in a rotating manner, one end, close to the inner wall of a feeding pipe, of each polygonal sliding rod is fixedly connected with a hemispherical block, a plurality of arc-shaped jacking blocks distributed at equal intervals are arranged in each of the low sliding groove, the middle sliding groove and the high sliding groove, and the arc-shaped jacking blocks are used for acting on the hemispherical blocks to enable the hemispherical blocks to slide; when the grinding roller slides in the high sliding groove, the middle sliding groove and the low sliding groove, the grinding roller can drive the polygonal connecting rod to move together, the polygonal connecting rod can drive the hemispherical block to move together, when the hemispherical block moves to be in contact with the arc-shaped surface of the arc-shaped top block, the arc-shaped surface of the arc-shaped top block can act on the hemispherical block, so that the hemispherical block moves along the arc-shaped surface, the hemispherical block can drive the polygonal sliding rod to move towards the direction of the first rotating shaft in the grinding roller, the polygonal sliding rod can drive the connecting rods to move together with one end connected with the connecting rods, the other ends of the connecting rods can respectively drive the tamping blocks to slide outwards in the tamping holes, so that the tamping blocks extend out of the tamping holes, the tamping blocks can pound larger silk materials on the filter plate, and after the hemispherical block and the arc-shaped top block are staggered, the polygonal sliding rod can return to the initial position under the action of the first spring, the polygonal slide bar can drive the connecting rods and the tamping blocks to return to the initial position together, then the hemispherical blocks can be sequentially contacted with the arc-shaped surfaces of the arc-shaped top blocks, and the tamping blocks can circularly move out of the tamping holes to pound silk materials with larger particles.

As a further scheme of the invention, the push rod comprises a fixed rod and an E-shaped push block, the fixed rod is fixedly connected to the outer wall of the bump, the E-shaped push block is fixedly connected to the bottom of the fixed rod, and the E-shaped push block is used for acting as a triangular ejector block; the during operation, through the setting of E font ejector pad, can make the push rod under the condition of round trip movement once in vertical direction, drive the filter and carry out a plurality of rockes, can accelerate in the less granule of granule enters into the shower nozzle through the filtration pore, can make the great silk material of granule produce simultaneously and rock on the filter, can avoid silk material granule to stop always in same position, can make that the roller of rolling is better pulverizes silk material granule.

As a further scheme of the invention, the filtering holes are round table-shaped through holes with small upper parts and large lower parts; during operation, the filtering holes are arranged in a circular truncated cone shape with a small upper part and a large lower part, so that small particles meeting requirements after being crushed by the rolling roller can flow out of the filtering holes more smoothly, and the filtering holes can be prevented from being blocked.

As a further aspect of the present invention, the fixing plate is L-shaped; during operation, the motor can be fixed on the top of the feeding pipe through the arrangement of the L-shaped fixing plate.

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

1. the invention can intercept the silk material with larger particles at the bottom of the feeding pipe through the arrangement of the filter plate, can avoid the silk material blocking a spray head caused by the fact that the silk material with larger particles cannot be melted in time when entering the spray head, and can realize the gradual grinding of the silk material particles with larger particles on the filter plate through the arrangement of the grinding roller, the low chute, the middle chute, the high chute and the driving mechanism which can drive the grinding roller to slide in the high chute, the middle chute and the low chute in turn through the driving mechanism until the larger silk material is ground to a position capable of passing through the filter hole, can avoid the larger silk material particles from being accumulated on the filter plate to shield the filter hole and prevent the silk material with smaller particles from entering the spray head, and simultaneously, the arrangement of the air spring, the triangular top block and the push rod can enable the driving mechanism to drive the filter plate to circularly rock at the bottom of the feeding pipe while the grinding roller moves and grinds, can accelerate in the granule that the granule is less passes through the filtration pore entering shower nozzle, can make the great silk material of granule produce simultaneously and rock on the filter, can avoid silk material granule to stay always in same position, can make that the roller of rolling is better pulverizes silk material granule, can make the silk material can be abundant after entering into the feed pipe by the utilization, can avoid the waste of silk material, simultaneously greatly reduced the possibility that the shower nozzle blockked up, the life of shower nozzle that can greatly increased.

2. According to the invention, through the arrangement of the tamping block and the arc-shaped jacking block, when the rolling roller slides in the high sliding groove, the middle sliding groove and the low sliding groove, the rolling roller can be enabled to pass through the interaction of the hemispherical block and the arc-shaped jacking block

3. According to the invention, through the arrangement of the E-shaped push block, the push rod can be driven to shake a plurality of times under the condition that the push rod moves back and forth once in the vertical direction, so that particles with smaller particles can be accelerated to enter the spray head through the filter holes, and meanwhile, silk materials with larger particles on the filter plate can shake, so that the silk material particles can be prevented from staying at the same position all the time, and the grinding roller can be used for grinding the silk material particles better.

Drawings

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

FIG. 2 is a schematic cross-sectional view of a portion of the present invention;

FIG. 3 is a schematic sectional view of the structure of the low chute, the middle chute and the high chute in the feed pipe of the invention;

FIG. 4 is a schematic cross-sectional view of the rolling roller and its upper structure of the present invention;

fig. 5 is a partially enlarged view of a portion a in fig. 4.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a feeding pipe 1, a feeding hole 2, a spray head 3, a filter plate 4, a filter hole 5, an air spring 6, a first rotating shaft 7, a sliding sleeve 8, a rolling roller 9, a low sliding groove 10, a middle sliding groove 11, a high sliding groove 12, a motor 13, a first rotating wheel 14, a second rotating wheel 15, a transmission belt 16, a cylindrical cam 17, a cam groove 18, a convex block 19, a push rod 20, a triangular top block 21, a tamping hole 22, a tamping block 23, a connecting rod 24, a polygonal sliding rod 25, a first spring 26, a hemispherical block 27, an arc top block 28, a fixing rod 29, an E-shaped pushing block 30 and a fixing plate 31.

Detailed Description

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a 3D printer nozzle prevents stifled structure, including inlet pipe 1, feed inlet 2 has been seted up at inlet pipe 1's top, inlet pipe 1's below is provided with shower nozzle 3, shower nozzle 3 passes through connecting block and inlet pipe 1 fixed connection, be provided with filter 4 between inlet pipe 1 and the shower nozzle 3, set up a plurality of filtration pore 5 that crosses that is circumference array distribution on the filter 4, and filter 4 sliding connection is in inlet pipe 1's bottom, fixedly connected with is used for its air spring 6 that resets on filter 4's the lateral wall, inlet pipe 1's top is rotated and is connected with first pivot 7, first pivot 7 has sliding sleeve 8 that is located inlet pipe 1 inside in upper and lower direction sliding connection, it is connected with rolling roller 9 to rotate on sliding sleeve 8's the lateral wall, rolling roller 9 is located filter 4's top, set up on inlet pipe 1's the inner wall and be located filter 4 top and low spout 10 of co-altitude not, The filter plate feeding device comprises a middle chute 11 and a high chute 12, wherein the head end and the tail end of the low chute 10, the head end and the tail end of the middle chute 11 and the tail end of the high chute 12 are communicated in pairs through chamfers, the low chute 10, the middle chute 11 and the high chute 12 are connected with a rolling roller 9 in a sliding mode, and a driving mechanism is arranged on the outer side of a feeding pipe 1 and used for driving a first rotating shaft 7 to rotate and driving a filter plate 4 to move;

the drive mechanism comprises a motor 13 which is, a first rotating wheel 14, a motor 13 is fixedly connected to the top of the feeding pipe 1 through a fixing plate 31, an output shaft of the motor 13 is fixedly connected to the top end of a first rotating shaft 7, the first rotating wheel 14 is located at the top of the feeding pipe 1 and is fixedly connected to the first rotating shaft 7, a second rotating wheel 15 is arranged on the side edge of the first rotating wheel 14, a transmission belt 16 is connected to the first rotating wheel 14 and the second rotating wheel 15 in a common transmission manner, the second rotating wheel 15 is rotatably connected to the outer side wall of the side of the feeding pipe 1, a cylindrical cam 17 is fixedly connected to a rotating shaft of the second rotating wheel 15, a cam groove 18 is formed in the cylindrical cam 17, a convex block 19 is slidably connected in the cam groove 18, the convex block 19 is slidably connected to the vertical direction of the outer side wall of the feeding pipe 1, a push rod 20 is fixedly connected to the outer wall of the convex block 19, a triangular top block 21 is arranged below the push rod 20, and the triangular top block 21 is fixedly connected to the side wall of the filter plate 4;

in the working process, in the melting process of the solid silk material in the prior art, some large granular silk material can not be melted in time, the melted silk material can be blocked in a nozzle to prevent the ejection of the melted silk material, once the spray head 3 is blocked, the 3D printing can not be continued, the spray head 3 needs to be cleaned by a worker, then the printing can be continued, and the printing time can be greatly increased. An output shaft of the motor 13 drives the first rotating shaft 7 to rotate, the first rotating shaft 7 drives the sliding sleeve 8 to rotate together, the sliding sleeve 8 drives the rolling roller 9 to rotate together, the rolling roller 9 slides in the high chute 12, the middle chute 11 and the low chute 10 in sequence around the first rotating shaft 7, when the rolling roller 9 slides in the high chute 12, the middle chute 11 and the low chute 10 in sequence, the distance between the rolling roller 9 and the filter plate 4 is reduced in sequence, the rolling degree of the rolling roller 9 on the filament materials is increased in a gradient manner, the rolling roller 9 gradually rolls the filament materials with larger particles, which are stopped at the top of the filter plate 4, into a size capable of passing through the filter holes 5, when the first rotating shaft 7 drives the rolling roller 9 to rotate, the first rotating shaft 7 also drives the first rotating wheel 14 to rotate together, the first rotating wheel 14 drives the second rotating wheel 15 to rotate together through the transmission belt 16, the second rotating wheel 15 can drive the cylindrical cam 17 to rotate together, the cam groove 18 on the cylindrical cam 17 can drive the convex block 19 to circularly move in the vertical direction of the outer wall of the feeding pipe 1, the convex block 19 can drive the push rod 20 to circularly move in the vertical direction together, when the push rod 20 moves downwards to be in contact with the inclined surface of the triangular top block 21, the push rod 20 can drive the triangular top block 21 to move by extruding the inclined surface of the triangular top block 21, the triangular top block 21 can drive the filter plate 4 to move at the bottom of the feeding pipe 1, and when the push rod 20 moves upwards to an initial position and is staggered with the triangular top block 21, the filter plate 4 can return to the initial position under the action of the air spring 6. according to the invention, the silk material with larger particles can be intercepted at the bottom of the feeding pipe 1 through the arrangement of the filter plate 4, the silk material with larger particles can be prevented from entering the spray head 3 and being incapable of being melted in time to cause the silk material to block the spray head 3, meanwhile, through the arrangement of the rolling roller 9, the low chute 10, the middle chute 11, the high chute 12 and the driving mechanism, the rolling roller 9 can be driven by the driving mechanism to sequentially slide in the high chute 12, the middle chute 11 and the low chute 10, so that the larger silk material particles on the filter plate 4 can be gradually crushed until the larger silk material particles are rolled to the position capable of passing through the filter hole 5, the larger silk material particles can be prevented from being accumulated on the filter plate 4 to shield the filter hole 5 and prevent the smaller silk material particles from entering the spray head 3, meanwhile, the air spring 6, the triangular top block 21 and the push rod 20 are arranged, the driving mechanism can drive the filter plate 4 to circularly rock at the bottom of the feed pipe 1 while the rolling roller 9 moves and rolls, the smaller particles can be accelerated to enter the spray head 3 through the filter hole 5, and the larger silk material particles on the filter plate 4 can rock at the same time, can avoid the silk material granule to stay in same position always, can make the better grinding roller 9 pulverize the silk material granule, can make the silk material can be abundant in the back of entering into inlet pipe 1 utilized, can avoid the waste of silk material, simultaneously greatly reduced the possibility that shower nozzle 3 blockked up, life that can greatly increased shower nozzle 3.

As a further scheme of the invention, the interior of the rolling roller 9 is of a hollow structure, the outer wall of the rolling roller 9 is provided with a plurality of tamping holes 22 distributed in an array manner along the circumferential direction, tamping blocks 23 are connected in the tamping holes 22 in a sliding manner, connecting rods 24 are connected on the inner walls of the tamping blocks 23 in a rotating manner, polygonal sliding rods 25 are connected in the rotating shaft of the rolling roller 9 in a sliding manner, one ends of the polygonal sliding rods 25, which are close to the sliding sleeve 8, are fixedly connected with first springs 26 for resetting the polygonal sliding rods, the connecting rods 24 are connected on the side walls of the polygonal sliding rods 25 in a rotating manner, one ends of the polygonal sliding rods 25, which are close to the inner wall of the feeding pipe 1, are fixedly connected with hemispherical blocks 27, a plurality of arc-shaped jacking blocks 28 distributed at equal intervals are arranged in the low sliding groove 10, the middle sliding groove 11 and the high sliding groove 12, and the arc-shaped jacking blocks 28 are used for acting on the hemispherical blocks 27 to enable the hemispherical blocks 27 to slide; when the grinding roller 9 slides in the high chute 12, the middle chute 11 and the low chute 10, the grinding roller 9 drives the polygonal connecting rod 24 to move together, the polygonal connecting rod 24 drives the hemispherical block 27 to move together, when the hemispherical block 27 moves to contact with the arc surface of the arc top block 28, the arc surface of the arc top block 28 acts on the hemispherical block 27, so that the hemispherical block 27 moves along the arc surface, the hemispherical block 27 drives the polygonal sliding rod 25 to move towards the direction of the first rotating shaft 7 in the grinding roller 9, the polygonal sliding rod 25 drives the connecting rods 24 to move together with one end connected with the connecting rods 24, the other ends of the connecting rods 24 respectively drive the smashing blocks 23 to slide outwards in the smashing holes 22, so that the smashing blocks 23 extend out of the smashing holes 22, the smashing blocks 23 can pound larger-sized wires on the filter plate 4, and after the hemispherical blocks 27 and the arc top block 28 are staggered, the polygonal sliding rod 25 returns to the initial position under the action of the first spring 26, the polygonal sliding rod 25 drives the connecting rods 24 and the tamping blocks 23 to return to the initial position, then the hemispherical blocks 27 are sequentially contacted with arc-shaped surfaces of the arc-shaped top blocks 28, and the tamping blocks 23 circularly move out of the tamping holes 22 to pound silk materials with larger particles.

As a further scheme of the invention, the push rod 20 comprises a fixed rod 29 and an E-shaped push block 30, the fixed rod 29 is fixedly connected on the outer wall of the bump 19, the E-shaped push block 30 is fixedly connected at the bottom of the fixed rod 29, and the E-shaped push block 30 is used for acting as a triangular top block 21; the during operation, through the setting of E font ejector pad 30, can make push rod 20 under the condition of once of round trip movement in the vertical direction, drive filter 4 and carry out a plurality of rockers, can accelerate in the less granule of granule gets into shower nozzle 3 through filtering hole 5, can make the great silk material of granule produce and rock on the filter 4 simultaneously, can avoid silk material granule to stop always in same position, can make the better grinding roller 9 pulverize silk material granule.

As a further scheme of the invention, the filtering holes 5 are circular truncated cone-shaped through holes with small upper parts and large lower parts; during operation, the filtering holes 5 are arranged in a shape of a circular truncated cone with a small upper part and a large lower part, so that small particles meeting requirements after being crushed by the rolling rollers 9 can flow out of the filtering holes 5 more smoothly, and the filtering holes 5 can be ensured not to be blocked.

As a further aspect of the present invention, the fixing plate 31 has an L-shape; in operation, the motor 13 can be fixed on the top of the feeding pipe 1 by the L-shaped fixing plate 31.

The working principle is as follows: in the working process, in the process of melting the solid silk material in the prior art, a certain large granular silk material can not be melted in time, the melted silk material can be prevented from being sprayed out in a nozzle, once the spray head 3 is blocked, 3D printing can not be continued, a worker needs to clean the spray head 3 and then can continue printing, and the printing time can be greatly increased. An output shaft of the motor 13 drives the first rotating shaft 7 to rotate, the first rotating shaft 7 drives the sliding sleeve 8 to rotate together, the sliding sleeve 8 drives the rolling roller 9 to rotate together, the rolling roller 9 slides in the high chute 12, the middle chute 11 and the low chute 10 in sequence around the first rotating shaft 7, when the rolling roller 9 slides in the high chute 12, the middle chute 11 and the low chute 10 in sequence, the distance between the rolling roller 9 and the filter plate 4 is reduced in sequence, the rolling degree of the rolling roller 9 on the silk material is increased in a gradient manner, the rolling roller 9 rolls the silk material with larger particles which is stopped at the top of the filter plate 4 into a size which can pass through the filter holes 5, while the first rotating shaft 7 drives the rolling roller 9 to rotate, the first rotating shaft 7 also drives the first rotating wheel 14 to rotate together, the first rotating wheel 14 drives the second rotating wheel 15 to rotate together through the driving belt 16, the second rotating wheel 15 can drive the cylindrical cam 17 to rotate together, the cam groove 18 on the cylindrical cam 17 can drive the convex block 19 to circularly move in the vertical direction of the outer wall of the feeding pipe 1, the convex block 19 can drive the push rod 20 to circularly move in the vertical direction together, when the push rod 20 moves downwards to be in contact with the inclined surface of the triangular top block 21, the push rod 20 can drive the triangular top block 21 to move by extruding the inclined surface of the triangular top block 21, the triangular top block 21 can drive the filter plate 4 to move at the bottom of the feeding pipe 1, and when the push rod 20 moves upwards to an initial position and is staggered with the triangular top block 21, the filter plate 4 can return to the initial position under the action of the air spring 6. according to the invention, the silk material with larger particles can be intercepted at the bottom of the feeding pipe 1 through the arrangement of the filter plate 4, the silk material with larger particles can be prevented from entering the spray head 3 and being incapable of being timely melted to cause the silk material to block the spray head 3, meanwhile, through the arrangement of the rolling roller 9, the low sliding groove 10, the middle sliding groove 11, the high sliding groove 12 and the driving mechanism, the rolling roller 9 can be driven by the driving mechanism to sequentially slide in the high sliding groove 12, the middle sliding groove 11 and the low sliding groove 10, so that the larger silk material particles on the filter plate 4 can be gradually crushed until the larger silk material particles are rolled to the position capable of passing through the filter hole 5, the larger silk material particles can be prevented from being accumulated on the filter plate 4 to shield the filter hole 5 and prevent the smaller silk material particles from entering the nozzle 3, meanwhile, the air spring 6, the triangular top block 21 and the push rod 20 are arranged, the driving mechanism can drive the filter plate 4 to circularly rock at the bottom of the feeding pipe 1 while the rolling roller 9 moves, the smaller particles can be accelerated to enter the nozzle 3 through the filter hole 5, and the larger silk material particles on the filter plate 4 can rock at the same time, can avoid silk material granule to stay in same position always, can make the better grinding roller 9 pulverize silk material granule, can make the silk material can be abundant in entering into inlet pipe 1 back utilized, can avoid the waste of silk material, simultaneously greatly reduced the possibility that shower nozzle 3 blockked up, life that can greatly increased shower nozzle 3.