阅读说明：本技术 一种组织工程用血管支架的管胚制备装置 (Blank preparation facilities of vascular support for tissue engineering ) 是由 于威 陈美珠 于 2020-11-28 设计创作，主要内容包括：本发明公开了一种组织工程用血管支架的管胚制备装置,包括支撑台,还包括排料机构、成型机构,排料机构包括机架、滑槽、第一丝杠、第一电机、第一滑块、安装板、排料组件、调节组件,机架通过螺栓连接在支撑台顶部中央,机架内侧开设有滑槽,滑槽内部通过轴承连接有横向设置的第一丝杠,第一丝杠一端伸出滑槽。本发明由于物料筒下端开设有下料口,下料口处连接有内腔截面小于下料口内腔截面的排料管,排料管远离该下料口的一端通过螺钉连接有内腔截面小于排料管内腔截面的扁平排料咀,进而实现了在排料时,扁平排料咀内不会出现气泡的情况；排料机构和成型机构的设置实现了长管胚制作的功能。(The invention discloses a tube blank preparation device of a vascular stent for tissue engineering, which comprises a support table, a discharge mechanism and a forming mechanism, wherein the discharge mechanism comprises a rack, a chute, a first lead screw, a first motor, a first slide block, a mounting plate, a discharge assembly and an adjusting assembly, the rack is connected to the center of the top of the support table through a bolt, the chute is formed in the inner side of the rack, the inside of the chute is connected with the first lead screw which is transversely arranged through a bearing, and one end of the first lead screw extends out of the chute. According to the invention, the lower end of the material barrel is provided with the feed opening, the feed opening is connected with the discharge pipe of which the inner cavity cross section is smaller than that of the feed opening, and one end of the discharge pipe, far away from the feed opening, is connected with the flat discharge nozzle of which the inner cavity cross section is smaller than that of the discharge pipe through the screw, so that the condition that air bubbles do not appear in the flat discharge nozzle during discharge is realized; the arrangement of the discharging mechanism and the forming mechanism realizes the function of manufacturing the long pipe blank.)

1. The utility model provides a blank preparation facilities of intravascular stent for tissue engineering, includes a supporting bench, its characterized in that: the material discharging mechanism comprises a rack, a sliding groove, a first lead screw, a first motor, a first slide block, a mounting plate, a material discharging component and an adjusting component, wherein the rack is connected to the center of the top of the supporting table through a bolt, the sliding groove is formed in the inner side of the rack, the inner part of the sliding groove is connected with the first lead screw which is transversely arranged through a bearing, one end of the first lead screw extends out of the sliding groove and is connected to the output end of the first motor through a key, the first motor is connected to one side of the rack through a bolt, the outer side of the first lead screw is in threaded connection with the first slide block, the first slide block is in sliding connection with the inner side of the sliding groove, the front end of the first slide block is connected with the mounting plate through a bolt, the top of the front end of the mounting plate is provided with the material discharging component, the inner side of the fixed sleeve is connected with a material cylinder through a bolt, the top of the material cylinder is provided with a material pushing assembly, the lower end of the material cylinder is provided with a feed opening, the feed opening is connected with a discharge pipe with an inner cavity section smaller than that of the inner cavity of the feed opening, one end of the discharge pipe, far away from the feed opening, is connected with a flat discharge nozzle with an inner cavity section smaller than that of the discharge pipe through a bolt, the flat discharge nozzle is fixed on the adjusting assembly, the forming mechanism comprises a slide rail, a second lead screw, a second motor, a second slide block, a third motor, a coupler, a standard preparation shaft, a second air cylinder and a clamping assembly, the two slide rails are arranged and are all connected to the top of the supporting table through bolts, the inner side of the slide rail on one side is connected with the second lead screw through a bearing, the front end of the second lead screw extends out of the slide rail, one side of the second sliding block is connected with a third motor through a bolt, the output end of the third motor penetrates through the second sliding block and is connected with a standard preparation shaft through a coupler, the other end of the standard preparation shaft is fixed on the inner side of the clamping assembly, the inner side of the sliding rail on the other side is connected with two second cylinders in a sliding mode, and the output ends of the second cylinders are connected with the clamping assembly through bearings.

2. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: the material pushing assembly comprises a piston plate and a first air cylinder, the piston plate is connected to the inner side of the material barrel in a sliding mode, the center of the top of the piston plate is connected to the output end of the first air cylinder through a bolt, and the first air cylinder is connected to the top of the mounting plate through a bolt.

3. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: the adjusting part include support, first guide post, regulating block, the support passes through bolted connection in mounting panel front end bottom, there is a first guide post that has the scale support inboard through bolted connection, first guide post outside sliding connection has the regulating block, regulating block front end bottom is chewed with flat row and is passed through screw fixed connection.

4. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 3, wherein: the zero scale of the first guide post and the central shaft of the standard preparation shaft are positioned on the same horizontal plane, the discharge hole of the flat discharge nozzle is flush with the bottom of the adjusting block, and the height of the adjusting block is a fixed value.

5. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: clamping component include fixing base, spring clamp cover, locking thread bush, fixing base one end is passed through the bearing and is connected in the output outside of second cylinder, fixing base other end inboard is provided with the spring clamp cover, spring clamp cover one end joint is inboard at the locking thread bush, and the centre gripping is in the standard preparation axle other end outside, locking thread bush threaded connection is in the fixing base outside.

6. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: clamping component include fixing base, V type splint, fixing base one end is passed through the bearing and is connected in the output outside of second cylinder, the fixing base other end is provided with V type splint, and the centre gripping of V type splint is in the standard preparation axle other end outside.

7. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: when one of the second sliding blocks is positioned at one end of the inner side of the sliding rail, the other second sliding block is positioned right below the flat discharge nozzle.

8. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: and an arc-shaped material receiving plate is arranged below the standard preparation shaft and is fixed on the second sliding block.

9. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 1, wherein: slide rail top both ends be provided with cutting mechanism, cutting mechanism includes the fixed block, the second guide post, the third slider, the third guide post, a spring, the ejector pad, cut out the blade, the fixed block passes through bolted connection at slide rail top both ends, there is the second guide post that has the scale through bolted connection between the fixed block, second guide post outside damping sliding connection has the third slider, the third guide post that has the scale of two vertical settings is inboard to the third slider through bolted connection, third guide post outside sliding connection has the ejector pad, ejector pad bottom front end has the blade of cutting out through bolted connection, one of them third guide post outside cover is equipped with the spring, and the spring is located the ejector pad below.

10. The apparatus for preparing vessel embryo of vascular stent for tissue engineering according to claim 9, wherein: the zero scale of the third guide post and the central shaft of the standard preparation shaft are positioned on the same horizontal plane, and the length of the cutting blade is a fixed value.

Technical Field

The invention relates to the technical field of tissue engineering, in particular to a tube blank preparation device of a vascular stent for tissue engineering.

Background

The tissue engineering vascular stent transplantation technology is gradually suitable for treating cardiovascular diseases and will become one of main treatment means for treating the cardiovascular diseases, and the vascular stent needs to be implanted into a human body, so that extremely high requirements are provided for the tissue engineering vascular stent, wherein the vascular stent needs to meet the properties of high cell density, small cell size, high cell connectivity and the like in the aspect of morphological structure so as to ensure nutrient transportation and metabolite discharge of tissue cells growing in the stent. The batch type microfoaming technology is widely used for theoretical research of cellular morphology structure. When the technology is adopted to research the influence factors of the cellular morphological structure in the vascular stent, a sample needs to be prepared firstly, for the preparation of a hollow pipe blank, an expensive extruder or injection molding machine is generally needed, an extrusion die or an injection molding mold is needed, if a scheme that one parameter corresponds to one mold is adopted, a large number of pipe and rod molds with different inner and outer diameters need to be prepared, and a large amount of manpower, resources and time need to be consumed. The invention provides a semi-automatic blood vessel stent tube blank preparation device capable of replacing a standardized mandrel, adjusting the height (adjusting the wall thickness of the tube blank) and the length of a discharge hole, greatly saves labor and time and greatly reduces the manufacturing cost in the preparation process of the blood vessel stent tube blank in tissue engineering.

Chinese patent publication No. CN106393533B discloses a device for preparing small-caliber tissue engineering vascular stent tube blanks, comprising a discharge control assembly, a pressure-feed assembly, a motor assembly and a multifunctional base assembly; the discharge control assembly comprises a self-adaptive discharge controller and a discharge adjusting rod, the discharge adjusting rod is matched with a discharge port of the self-adaptive discharge controller, and the length of the pipe blank is controlled by adjusting the position of the discharge adjusting rod; the motor assembly comprises a motor, a standardized mandrel and a motor control system, wherein the standardized mandrel is a quick replaceable part, and the diameter of the standardized mandrel controls the inner diameter of a tube blank sample; the multifunctional base component comprises a base, a material recovery disc and a self-adaptive adjusting bracket; the self-adaptive discharging controller is fixed on a sliding rod of the self-adaptive adjusting bracket, and the distance between the discharging port and the standardized mandrel is adjusted by adjusting the position of the self-adaptive discharging controller so as to control the wall thickness of the pipe blank. However, this device has the following disadvantages: 1. the device can only make a qualified pipe embryo at every turn, and production efficiency remains to be improved, and 2, self-adaptation ejection of compact controller's cavity cross-section is greater than the cross-section of rubber tube, leads to all need carry out exhaust treatment to self-adaptation ejection of compact controller when making the pipe embryo at every turn to leave the bubble in self-adaptation ejection of compact controller memory easily, influence pipe embryo quality.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a vessel embryo preparation apparatus for a vascular stent for tissue engineering.

The invention realizes the purpose through the following technical scheme:

the utility model provides a vascular stent's pipe embryo preparation facilities for tissue engineering, which comprises a supporting table, still include row material mechanism, forming mechanism, it includes the frame to arrange the material mechanism, the spout, first lead screw, first motor, first slider, the mounting panel, arrange the material subassembly, adjusting part, bolted connection is passed through at a supporting bench top central authorities in the frame, the spout has been seted up to the frame inboard, the inside first lead screw that is connected with horizontal setting through the bearing of spout, first lead screw one end stretches out the spout, and through the output of keyed connection in first motor, first motor passes through bolted connection in frame one side, first lead screw outside threaded connection has first slider, and first slider sliding connection is inboard at the spout, first slider front end has the mounting panel through bolted connection, mounting panel front end top is provided with row material subassembly, mounting panel front end bottom is provided with adjusting part, it includes fixed cover, arrange, The material cylinder, the blow-off pipe, flat discharge nozzle, fixed cover passes through bolted connection in the mounting panel the place ahead, the fixed cover inboard has the material cylinder through bolted connection, the material cylinder top is provided with pushes away the material mouth, the feed opening has been seted up to the material cylinder lower extreme, this feed opening department is connected with the blow-off pipe that the inner chamber cross-section is less than this feed opening inner chamber cross-section, the one end that the blow-off pipe kept away from this feed opening has the flat discharge nozzle that the inner chamber cross-section is less than the blow-off pipe inner chamber cross-section through the screw connection, and flat discharge nozzle fixes on the adjusting part, so set up and can push the material in the material cylinder through pushing away the material subassembly, make the material pass through the blow-off pipe and enter flat discharge nozzle inside, discharge from flat discharge nozzle at last, can also drive first lead screw rotation through first, the forming mechanism comprises two slide rails, a second lead screw, a second motor, second slide blocks, a third motor, a coupler, a standard preparation shaft, a second air cylinder and a clamping assembly, wherein the two slide rails are connected to the top of a support table through bolts, the inner side of one slide rail is connected with the second lead screw through a bearing, the front end of the second lead screw extends out of the slide rail and is connected to the output end of the second motor through a key, the second motor is connected to the front part of the slide rail through bolts, the outer side of the second lead screw is in threaded connection with the two second slide blocks, one side of the second slide block is connected with the third motor through bolts, the output end of the third motor penetrates through the second slide block and is connected with the standard preparation shaft through the coupler, the other end of the standard preparation shaft is fixed to the inner side of the clamping assembly, the inner side of the slide rail at the other side is in sliding connection, the shaft coupling is driven to rotate through the third motor, the shaft coupling drives the standard preparation shaft to rotate, the function of preparing the pipe blank is achieved, the function of preparing the long pipe blank is achieved through the matching of the discharging mechanism, the second lead screw can be driven to rotate through the second motor, the second lead screw drives the second sliding block to move, discharging and preparing of the pipe blank are achieved simultaneously, and production efficiency is improved.

Preferably, the material pushing assembly comprises a piston plate and a first air cylinder, the piston plate is connected to the inner side of the material cylinder in a sliding mode, the center of the top of the piston plate is connected to the output end of the first air cylinder through a bolt, the first air cylinder is connected to the top of the mounting plate through a bolt, the first air cylinder can drive the piston plate to descend, and the piston plate slides downwards in the material cylinder, so that the material pushing function is achieved.

Preferably, the adjusting part includes the support, first guide post, the regulating block, the support passes through bolted connection in mounting panel front end bottom, there is the first guide post of scale in the support inboard through bolted connection, first guide post outside sliding connection has the regulating block, regulating block front end bottom is chewed through screw fixed connection with flat row, it is through promoting the regulating block to set up like this, the regulating block drives flat row's material and chews the removal, realized adjusting flat row's material and chewed and the function of preparing the distance between the axle with the standard, the function of regulating tube embryo thickness has been realized.

Preferably, zero scale and the center pin of standard preparation axle of first guide post are in same horizontal plane, and the discharge gate and the regulating block bottom parallel and level of flat row material is chewed, and the regulating block height is the definite value, sets up the distance that can be convenient calculate between flat row material is chewed and the standard preparation axle like this.

Preferably, clamping components includes the fixing base, spring clamp cover, locking thread bush, the output outside at the second cylinder is connected through the bearing to fixing base one end, fixing base other end inboard is provided with spring clamp cover, spring clamp cover one end joint is inboard at locking thread bush, and the centre gripping is in the standard preparation axle other end outside, locking thread bush threaded connection is in the fixing base outside, it can be through rotating locking thread bush to set up like this, locking thread bush moves spring clamp cover and removes, and the cooperation fixing base, make spring clamp cover shrink, the function of tight standard preparation axle of clamp has been realized, and then the stability when standard preparation axle rotates has been improved.

Preferably, clamping component includes fixing base, V type splint, and the bearing connection is passed through in the output outside of second cylinder to fixing base one end, and the fixing base other end is provided with V type splint, and V type splint centre gripping is in the standard preparation axle other end outside, sets up like this and can pass through the tight standard preparation axle of V type splint clamp, and then has improved the stability when standard preparation axle rotates.

Preferably, when one of the second sliding blocks is located at one end of the inner side of the sliding rail, the other second sliding block is located right below the flat discharge nozzle, so that the arrangement can ensure that one standard preparation shaft is at a material receiving position and the other standard preparation shaft is at a material discharging position.

Preferably, standard preparation axle below is provided with the arc and connects the flitch, and the arc connects the flitch to fix on the second slider, sets up like this and can connect the flitch to receive unnecessary material through the arc, is of value to the recovery of material.

Preferably, the cutting mechanism is arranged at two ends of the top of the slide rail and comprises a fixed block, a second guide post, a third sliding block, a third guide post, a spring, a pushing block and a cutting blade, the fixed block is connected at two ends of the top of the slide rail through bolts, the second guide post with scales is connected between the fixed blocks through bolts, the outer side of the second guide post is in damping sliding connection with the third sliding block, the inner side of the third sliding block is connected with two vertically arranged third guide posts with scales through bolts, the outer side of each third guide post is in sliding connection with the pushing block, the front end of the bottom of each pushing block is connected with the cutting blade through a bolt, the spring is sleeved on the outer side of one third guide post and is positioned below the pushing block, the pushing block can be pushed to drive the cutting blade to descend, the function of cutting a long pipe blank is realized, and the cutting mechanism is matched with the third sliding block to slide on the outer, further obtaining the tube blank with proper length, and realizing the function of preparing a plurality of tube blanks at one time.

Preferably, the zero scale of the third guide post and the central axis of the standard preparation shaft are in the same horizontal plane, and the length of the cutting blade is a fixed value, so that the descending distance of the cutting blade can be controlled according to the scale on the third guide post, and the cutting blade is prevented from colliding with the standard preparation shaft to damage the cutting blade.

The technical scheme provided by the invention can have the following beneficial effects:

1. this device is because the feed opening has been seted up to material section of thick bamboo lower extreme, and feed opening department is connected with the row's of inner chamber cross-section and expects the pipe that the inner chamber cross-section is less than the inner chamber cross-section of feed opening, and the one end of arranging that the material pipe was kept away from this feed opening has the inner chamber cross-section to be less than through the screw connection the flat row of discharge pipe inner chamber cross-section expects to chew, and then has realized when arranging the material.

2. The device can drive the shaft coupling to rotate through the third motor, the shaft coupling drives the standard preparation shaft to rotate, the function of preparing a pipe blank is realized, the material pushing assembly is matched to extrude the material in the material cylinder, so that the material enters the flat discharge nozzle through the discharge pipe and is finally discharged from the flat discharge nozzle, the first motor can also drive the first lead screw to rotate, the first lead screw drives the first sliding block to move, the first sliding block drives the mounting plate to move, and the mounting plate drives the discharge assembly and the adjusting assembly to move, so that the function of preparing the long pipe blank is realized;

3. this device can drive the second lead screw through the second motor and rotate, and the second lead screw drives the second slider and removes for unloading and preparation pipe embryo go on simultaneously, have improved production efficiency.

Additional features of the invention and advantages thereof will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a vessel embryo preparation device of a vascular stent for tissue engineering according to the present invention;

FIG. 2 is a right side view of a vessel embryo preparation device for a vascular stent for tissue engineering according to the present invention;

FIG. 3 is a top view of a device for preparing a vessel stent for tissue engineering according to the present invention;

FIG. 4 is a sectional view A-A of a vessel embryo preparation device for a vascular stent for tissue engineering according to the present invention;

FIG. 5 is an enlarged partial view of a vessel embryo preparation device for a tissue engineering blood vessel scaffold according to the present invention;

FIG. 6 is a partial enlarged view of the second embodiment of the device for preparing a vessel stent for tissue engineering in accordance with the present invention;

FIG. 7 is a partially enlarged view III of a first embodiment of a vessel stent for tissue engineering in accordance with the present invention;

FIG. 8 is a partially enlarged view III of a second embodiment of a vessel stent for tissue engineering according to the present invention.

The reference numerals are explained below:

1. a support table; 2. a discharge mechanism; 3. a molding mechanism; 4. a cutting mechanism; 201. a frame; 202. a chute; 203. a first lead screw; 204. a first motor; 205. a first slider; 206. mounting a plate; 207. a discharge assembly; 208. an adjustment assembly; 2071. fixing a sleeve; 2072. a material cylinder; 2073. a piston plate; 2074. a first cylinder; 2075. a discharge pipe; 2076. a flat discharge nozzle; 2081. a support; 2082. a first guide post; 2083. an adjusting block; 301. a slide rail; 302. a second lead screw; 303. a second motor; 304. a second slider; 305. a third motor; 306. a coupling; 307. preparing a shaft in a standard mode; 308. a second cylinder; 309. a clamping assembly; 310. an arc-shaped material receiving plate; 3091. a fixed seat; 3092. a spring jacket; 3093. locking the threaded sleeve; 30901. a V-shaped splint; 401. a fixed block; 402. a second guide post; 403. a third slider; 404. a third guide post; 405. a spring; 406. a push block; 407. and (4) cutting the blades.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1-7, a tube blank preparing device of a vascular stent for tissue engineering comprises a support table 1, a discharging mechanism 2 and a forming mechanism 3, wherein the discharging mechanism 2 comprises a frame 201, a chute 202, a first lead screw 203, a first motor 204, a first slider 205, an installation plate 206, a discharging assembly 207 and an adjusting assembly 208, the frame 201 is connected to the center of the top of the support table 1 through bolts, the chute 202 is formed in the inner side of the frame 201, the inner part of the chute 202 is connected with the first lead screw 203 which is transversely arranged through a bearing, one end of the first lead screw 203 extends out of the chute 202 and is connected to the output end of the first motor 204 through a key, the first motor 204 is connected to one side of the frame 201 through bolts, the outer side of the first lead screw 203 is connected with the first slider 205 through threads, the first slider 205 is connected to the inner side of the chute 202 in, the top of the front end of the mounting plate 206 is provided with a material discharge component 207, the bottom of the front end of the mounting plate 206 is provided with an adjusting component 208, the material discharge component 207 comprises a fixed sleeve 2071, a material cylinder 2072, a material discharge pipe 2075 and a flat material discharge nozzle 2076, the fixed sleeve 2071 is connected in front of the mounting plate 206 through bolts, the inner side of the fixed sleeve 2071 is connected with the material cylinder 2072 through bolts, the top of the material cylinder 2072 is provided with a material discharge component, the lower end of the material cylinder 2072 is provided with a material discharge opening, the material discharge opening is connected with the material discharge pipe 2075 with an inner cavity cross section smaller than that of the material discharge pipe 2075, one end of the material discharge pipe 2075 far away from the material discharge opening is connected with the flat material discharge nozzle 2076 with an inner cavity cross section smaller than that of the material discharge pipe 2075 through bolts, and the flat material discharge nozzle 2076 is, finally, the material is discharged from the flat discharging nozzle 2076, the first screw 203 can be driven to rotate by the first motor 204, the first screw 203 drives the first slider 205 to move, the first slider 205 drives the mounting plate 206 to move, the mounting plate 206 drives the discharging component 207 and the adjusting component 208 to move, so that the function of moving and discharging the material is realized, the forming mechanism 3 comprises two slide rails 301, a second screw 302, a second motor 303, a second slider 304, a third motor 305, a coupler 306, a standard preparation shaft 307, a second cylinder 308 and a clamping component 309, the two slide rails 301 are connected to the top of the support table 1 by bolts, the inner side of one slide rail 301 is connected with the second screw 302 by a bearing, the front end of the second screw 302 extends out of the slide rail 301 and is connected to the output end of the second motor 303 by a key, the second motor 303 is connected to the front of the slide rail 301 by a bolt, the outer side of the second screw 302 is connected with, one side of the second sliding block 304 is connected with a third motor 305 through a bolt, the output end of the third motor 305 passes through the second sliding block 304 and is connected with a standard preparation shaft 307 through a coupler 306, the other end of the standard preparation shaft 307 is fixed at the inner side of a clamping component 309, the inner side of a slide rail 301 at the other side is connected with two second air cylinders 308 in a sliding way, the output ends of the second air cylinders 308 are connected with the clamping component 309 through bearings, in this way, the third motor 305 can drive the coupler 306 to rotate, the coupler 306 drives the standard preparation shaft 307 to rotate, the function of preparing the pipe blanks is realized by matching with the discharging mechanism 2, the second lead screw 302 can drive the second lead screw 302 to rotate, the second lead screw 302 drives the second sliding block 304 to move, so that the blanking and the pipe blanks are simultaneously carried out, the production efficiency is improved, the material pushing component comprises, the piston plate 2073 is connected to the inner side of the material barrel 2072 in a sliding manner, the center of the top of the piston plate 2073 is connected to the output end of the first cylinder 2074 through a bolt, the first cylinder 2074 is connected to the top of the mounting plate 206 through a bolt, the first cylinder 2074 is arranged to drive the piston plate 2073 to descend through the first cylinder 2074, the piston plate 2073 slides downwards in the material barrel 2072, the pushing function is realized, the adjusting assembly 208 comprises a bracket 2081, a first guide column 2082 and an adjusting block 2083, the bracket 2081 is connected to the bottom of the front end of the mounting plate 206 through a bolt, the first guide column 2082 with scales is connected to the inner side of the bracket 2081 through a bolt, the adjusting block 2083 is connected to the outer side of the first guide column 2082 in a sliding manner, the bottom of the front end of the adjusting block 2083 is fixedly connected with the flat discharging nozzle 2076 through a bolt, the adjusting block 2083 can be pushed, the flat discharging nozzle 2076 is driven to move by the adjusting block, the function of adjusting the thickness of the pipe blank is realized, the zero scale of the first guide column 2082 and the central shaft of the standard preparation shaft 307 are positioned on the same horizontal plane, the discharge hole of the flat discharging nozzle 2076 is flush with the bottom of the adjusting block 2083, and the height of the adjusting block 2083 is a fixed value, so that the distance between the flat discharging nozzle 2076 and the standard preparation shaft 307 can be conveniently calculated, the clamping assembly 309 comprises a fixing seat 3091, a spring jacket 3092 and a locking thread bush 3093, one end of the fixing seat 3091 is connected to the outer side of the output end of the second cylinder 308 through a bearing, the spring jacket 3092 is arranged on the inner side of the other end of the fixing seat 3091, one end of the spring jacket 3092 is clamped on the inner side of the locking thread bush 3093 and clamped on the outer side of the other end of the standard preparation shaft 307, the locking thread bush 3093 is in threaded connection to the outer side of the fixing seat 3091, so, and cooperate with the fixed seat 3091, make the spring jacket 3092 shrink, have realized the function of clamping the standard preparation shaft 307, and then has improved the stability when the standard preparation shaft 307 rotates, when one of them second slide block 304 is located at one end of inboard of slide rail 301, another second slide block 304 is located under the flat discharge nozzle 2076, so set up can guarantee another standard preparation shaft 307 is in the position of blanking while receiving the material in a standard preparation shaft 307, there are arcuate receiving plates 310 under the standard preparation shaft 307, and arcuate receiving plates 310 are fixed on second slide block 304, so set up and can receive the surplus material through arcuate receiving plates 310, help the recovery of the material, there are cutting mechanisms 4 at both ends of top of the slide rail 301, the cutting mechanism 4 includes the fixed block 401, the second guide post 402, the third slide block 403, the third guide post 404, the spring 405, the ejector pad 406, cut the blade 407, the fixed blocks 401 are connected with two ends of the top of the sliding rail 301 through bolts, a second guide post 402 with scales is connected between the fixed blocks 401 through bolts, the outer side of the second guide post 402 is connected with a third slide block 403 in a damping sliding manner, the inner side of the third slide block 403 is connected with two vertically arranged third guide posts 404 with scales through bolts, the outer side of the third guide post 404 is connected with a push block 406 in a sliding manner, the front end of the bottom of the push block 406 is connected with a cutting blade 407 through a screw, a spring 405 is sleeved on the outer side of one third guide post 404, the spring 405 is positioned below the push block 406, the push block 406 can be pushed to drive the cutting blade 407 to descend, the function of cutting long pipe blanks is realized, the third slide block is matched with the outer side of the second guide post 402 to slide, so that pipe blanks with proper length are obtained, the function of preparing a plurality of pipe blanks at one time is realized, the zero scale of the third guide post 404 is positioned on the same horizontal plane with the central axis of a, and the length of the cutting blade 407 is a fixed value, so that the setting can control the descending distance of the cutting blade 407 according to the scale on the third guide post 404, and prevent the cutting blade 407 from colliding with the standard preparation shaft 307 and causing damage to the cutting blade 407.

Example 2

As shown in fig. 8, embodiment 2 differs from embodiment 1 in that: clamping assembly 309 includes fixing base 3091, V type splint 30901, and the output outside at second cylinder 308 is passed through the bearing connection to fixing base 3091 one end, and the fixing base 3091 other end is provided with V type splint 30901, and the centre gripping of V type splint 30901 is in the standard preparation axle 307 other end outside, sets up like this and can pass through V type splint 30901 and press from both sides tight standard preparation axle 307, and then has improved the stability when standard preparation axle 307 rotates.

In the structure, before use, three main parameters of the inner diameter and the wall thickness of a tissue engineering vessel stent tube blank are determined according to the volume shrinkage rate of material cooling, then a standard preparation shaft 307 with the corresponding inner diameter size is selected, then an adjusting block 2083 is pushed, the adjusting block 2083 drives a flat discharge nozzle 2076 to move, so that the vertical distance between the flat discharge nozzle 2076 and the standard preparation shaft 307 is consistent with the wall thickness parameter of a tube blank sample, when the structure is used, a third motor 305 is started firstly, the third motor 305 drives the standard preparation shaft 307 to rotate through a coupler 306, then a first cylinder 2074 is started, the first cylinder 2074 drives a piston plate 2073 to descend, the piston plate 2073 extrudes materials in a material barrel 2072, so that the materials enter the flat nozzle 2076 through a discharge pipe 2075, the materials are discharged from the flat discharge nozzle 2076 and fall on the surface of the standard preparation shaft 307, and then the first motor 204 is started, the first motor 204 drives the first lead screw 203 to rotate, the first lead screw 203 drives the first slide block 205 to move, the first slide block 205 drives the mounting plate 206 to move, the mounting plate 206 drives the discharging component 207 and the adjusting component 208 to move until the surface of the standard preparation shaft 307 is completely covered with the materials, at this time, the second motor 303 is started, the second motor 303 drives the second lead screw 302 to rotate, the second lead screw 302 drives the second slide block 304 to move, the second slide block 304 drives the standard preparation shaft 307 to move, so that the standard preparation shaft 307 covered with the materials is positioned at the discharging position, at this time, the other standard preparation shaft 307 is positioned below the flat discharging nozzle 2076, the steps are repeated, so that the other standard preparation shaft 307 is covered with the materials, in the process, the materials on the standard preparation shaft 307 are fixed, the third slide block 403 is pushed, the third slide block 403 slides outside the second guide column 402 and drives the cutting blade 407 to move, until the cutting blade 407 moves to a proper position, then the pushing block 406 is pressed, the pushing block 406 drives the cutting blade 407 to descend, the long tube blank is cut, after the cutting is completed, the corresponding third motor 305 is turned off, the clamping component 309 is made to contact and fix the standard preparation shaft 307, then the corresponding second air cylinder 308 is started, the second air cylinder 308 drives the clamping component 309 to move, so that the clamping component 309 is far away from the standard preparation shaft 307, and at this time, the tube blank just facing the standard preparation shaft 307 can be taken off.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.