CN210453779U - Screw extrusion variable-precision additive manufacturing equipment with stirring and anti-blocking functions - Google Patents
Screw extrusion variable-precision additive manufacturing equipment with stirring and anti-blocking functions Download PDFInfo
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- CN210453779U CN210453779U CN201920761204.5U CN201920761204U CN210453779U CN 210453779 U CN210453779 U CN 210453779U CN 201920761204 U CN201920761204 U CN 201920761204U CN 210453779 U CN210453779 U CN 210453779U
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Abstract
The utility model discloses a screw extrusion that area stirring and prevent stifled function becomes precision vibration material disk equipment. The equipment comprises a three-dimensional mobile station and an extrusion unit arranged on the three-dimensional mobile station; the extrusion unit comprises a first motor, a gear box, a storage bin, a stirring part, a screw, a rocket head, a machine barrel and a discharge nozzle; the first motor is connected with the gear box, the bottom of the gear box is connected with the end part of the storage bin, and a stirring part is arranged in the storage bin; the screw rod comprises a fixing part and a threaded part, the screw rod penetrates through the storage bin and the machine barrel, one end of the screw rod is connected with the stirring part through the fixing part, the other end of the screw rod is connected with a rocket head through the threaded part, and an output shaft of the gear box is connected with the fixing part; the bottom of the storage bin is connected with the end part of the machine barrel, and the bottom of the machine barrel is connected with the discharging nozzle. The equipment solves the problems of low efficiency, high material cost and the like of the traditional additive manufacturing, and can form engineering plastics, building materials, high-viscosity energetic materials, metal slurry, ceramic slurry and other materials.
Description
Technical Field
The utility model belongs to the vibration material disk field, concretely relates to screw extrusion that area stirring and prevent stifled function becomes precision vibration material disk equipment.
Background
In recent years, the additive manufacturing technology has highlighted the blowout type development, and various forms of 3D printing apparatuses have been successively introduced. However, reducing cost and improving accuracy remain a major limitation in the widespread adoption of additive manufacturing. The metal laser selective Sintering (SLM), the electron beam melting molding (EBM) or the Near Net Shape Forming (NNSF) has higher index requirements on raw materials, the cost is high, and meanwhile, the forming efficiency and the forming precision have essential contradictions. Additive manufacturing of engineering plastics, building materials, energetic materials, metal pastes, ceramic pastes, etc. is often done by using process Fused Deposition Manufacturing (FDM), pneumatically or hydraulically driven extrusion discharging, or by using screw extrusion discharging. However, FDM typically uses wire stock, which requires some limited processing of the stock material. The extrusion discharging mode still has higher requirements on the fluidity or the free-running property of the material, and the material is easy to block so as to cause unsuccessful or uneven material conveying. Therefore, it is a technical problem to be solved to provide an additive manufacturing apparatus capable of improving the drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses just based on traditional vibration material disk efficiency is lower, the higher scheduling problem of material cost, provide a screw extrusion that area stirring and prevent stifled function changes precision vibration material disk equipment, can form engineering plastics, building material, high viscosity energetic material, metal slurry, ceramic slurry etc..
The utility model provides an additive manufacturing device, which comprises a three-dimensional mobile platform and an extrusion unit, wherein the extrusion unit is arranged on the three-dimensional mobile platform;
the extrusion unit comprises a first motor, a gear box, a storage bin, a stirring part, a screw, a rocket head, a machine barrel and a discharge nozzle; the first motor is connected with the gear box (for example, connected through a coupling), the bottom of the gear box is connected with the end of the storage bin, and a stirring part is arranged in the storage bin;
the screw rod comprises a fixing part and a threaded part, the screw rod penetrates through the storage bin and the machine barrel, one end of the screw rod is connected with the stirring part through the fixing part, the other end of the screw rod is connected with the rocket head through the threaded part, and an output shaft of the gear box is connected with the fixing part;
the bottom of the storage bin is connected with the end part of the cylinder, and the bottom of the cylinder is connected with the discharging nozzle.
According to the apparatus of the present application, the threaded portion may pass through both the storage bin and the barrel, or the threaded portion may pass through the barrel separately. For example, the fixed part and a part of the threaded part extend into the storage bin, and the other part of the threaded part and the fire arrow are arranged inside the machine barrel.
According to the equipment of this application, the storage silo includes the storage silo apron and the storage silo storehouse body, set up first trompil on the storage silo apron. The output shaft of the gear box can penetrate through the first opening hole and is connected with the fixing part which is connected with the stirring part. Further, the storage bin cover plate can be further provided with a second opening which is connected with the external storage bin through the second opening, so that sufficient materials in the storage bin can be guaranteed, and continuous feeding can be achieved.
According to the apparatus of the present application, the stirring portion is fixed on the fixing portion. Preferably, the stirring part comprises a socket ring and a stirring rod arranged on the socket ring. Wherein, the quantity of puddler is 2 at least to be in the circumference equipartition state. Further, the size of the socket ring matches the size of the fixing portion. Further, the shape of the stirring rod is consistent with that of the storage bin body, and the purpose is to enable the stirring rod to achieve sufficient mixing of materials in the storage bin. For example, when the storage bin body is a conical body, the shape of the stirring rod is a fold line, and the folding angle of the stirring rod is preferably consistent with the included angle between the side edge of the storage bin body and the horizontal plane. Preferably, the first opening is matched with the size of the sleeve ring and the size of the fixing part.
According to the device of the application, the connection mode of the output shaft of the gear box and the fixed part can be a connection method known in the field, such as threaded connection, clamping connection and the like.
According to the equipment of this application, as required, the inside of screw rod sets up the thimble, thimble point runs through fire arrow point, thimble can be through mode such as structural design or electromagnetism are flexible about realizing controllable removal to promote the material and extrude the ejection of compact mouth, at high accuracy, high viscosity material printing occasion, can play the effect that promotes the material and carry.
Preferably, the present invention provides a structural design scheme, but not limited to, that the thick end of the thimble is fixed on the gear box, and the thimble moves up and down with the rotation of the screw. For example, the thimble comprises a thimble body, a first guide shaft, a second guide shaft, a cam seat and a spring;
a through hole is formed in the radial direction of the thick end of the thimble body, the first guide shaft and the second guide shaft are matched with the thimble body through the through hole, and the first guide shaft is fixed on a guide groove of a box cover of the gear box; the guide groove of the gear box cover limits the first guide shaft to enable the first guide shaft not to do circular motion along the screw rod, so that the thimble is prevented from doing circular motion and only can move up and down;
the cam seat is arranged between the first guide shaft and the second guide shaft and performs synchronous circular motion along with the screw;
the spring is arranged between the cam seat and the second guide shaft, and the contact fit of the lower part of the first guide shaft and the cam curved surface on the cam seat is ensured.
The apparatus according to the present application, the extrusion unit may further comprise a heating device disposed outside the barrel. Preferably, to achieve uniformity of heating of the material within the barrel, the heating device is wrapped around the outside of the barrel. Further, a temperature measuring hole is formed in the outer wall of the machine barrel. The heating device and the temperature measuring hole are arranged, so that the condition that the material needs to be heated can be met.
The apparatus according to the present application, the extrusion unit may further comprise a vibrating device disposed outside the barrel; preferably, the vibrating means surrounds the exterior of the barrel. Wherein, the vibration device can be selected from vibration devices known in the art, such as ultrasonic vibration, pneumatic vibration, etc. The setting of vibrating device is applicable to the condition that high viscosity material printed.
According to the equipment of the application, the number of the extrusion units can be set by a person skilled in the art according to the needs, for example, the extrusion units can be set to be 1, 2, 3 or more. Those skilled in the art may also select the size of the tap, such as an array of taps or a single independent tap, as desired. A plurality of extrusion units or array discharge nozzles can improve the forming efficiency and realize the efficient laying and forming of materials. The discharging aperture of the discharging nozzle can be replaced according to the printing precision requirement.
According to the device of the application, the rocket head is provided with a variable-pitch thread, and the center of the fire arrow head coincides with the center of the screw. Further, the taper angle of the fire arrow head is consistent with the taper angle of the discharge nozzle, and the fire arrow head and the discharge nozzle are jointed. Furthermore, a through hole can be formed in the fire arrow head, so that the tip of the thimble can penetrate through the fire arrow head conveniently.
According to the apparatus of the present application, the connection of the threaded portion to the hot arrow may be a conventional connection in the art, preferably a threaded connection, for example, the hot arrow is connected to the threaded portion of the screw by a counter thread.
According to the device of the present application, a structure known in the art, such as a screw guide structure, a robot structure, etc., capable of realizing three-dimensional movement of the extrusion unit may be selected for the three-dimensional moving stage. For example, the three-dimensional mobile station comprises a second motor, a coupler, a screw rod, a guide rail and a carrier, wherein the second motor is connected with the screw rod through the coupler, the screw rod is connected with the carrier, and the carrier is connected with the guide rail. The three-dimensional movement of the carrier can be realized through the driving of the second motor. For example, the number of the lead screws and the guide rails may be set to at least 2 groups, 3 groups, 4 groups or more. Wherein the first motor and the second motor may be the same or different.
According to the device of the application, the device can further comprise a frame, and the three-dimensional mobile station is arranged on the frame.
According to the equipment of this application, equipment can also include print platform, print platform sets up the below of extruding the unit, print platform places in the top of frame.
According to the equipment of the application, the equipment can also comprise a microcomputer control end, the microcomputer control end is arranged on the rack, the microcomputer control end is electrically connected with the three-dimensional mobile station and the extrusion unit, and the movement operation of the extrusion unit is realized through program control. Furthermore, the microcomputer control end can also be electrically connected with the heating device and the ultrasonic device.
In the device, the extrusion unit is fixed on a three-dimensional mobile station, and the three-dimensional mobile station and a microcomputer control end are fixed on a rack. The printing platform is fixed on the rack, and materials extruded by the extruding unit are shaped on the printing platform and stacked layer by layer to realize additive manufacturing. Under the drive of the digital slicing model, the movement of the three-dimensional moving platform object carrier is controlled through the microcomputer control end, and the extrusion unit is driven to move. The first motor on the extrusion unit rotates to stir the granular materials and promote the granular materials to rapidly enter the machine barrel. The material conveying is realized under the rotating extrusion of the screw, the material is heated to a molten state through the heater, and the molten material is extruded out of the discharge nozzle under the rotating extrusion of the screw.
According to the equipment, the materials can be high polymer materials (such as engineering plastics and high polymer slurry; even particle waste materials in the engineering plastics can be specifically used), metal slurry, ceramic slurry, construction concrete and the like.
The utility model has the advantages that:
the utility model provides a vibration material disk equipment extrudes and has the puddler in the unit storage silo, can drive to realize in the material gets into the barrel fast cleanly. Meanwhile, according to actual needs, the ejector pins can be arranged inside the screw rod, the ejector pins can push materials to extrude out of the discharging nozzle, and particularly, in high-precision occasions, the ejector pins can effectively prevent the materials from being blocked under the condition that the discharging nozzle is small. Take the hot arrow point of variable pitch screw, owing to can produce the material at the ejection of compact mouth tip and extrude drive power, print the occasion at high accuracy and high viscosity material and have good advantage to solve traditional screw extrusion mechanism and block up easily and be difficult to realize the problem that the high accuracy printed. Through the change of extruding head ejection of compact mouth size, can realize variable precision vibration material disk. Efficient and accurate forming can be achieved by arranging an array or a plurality of independent extrusion units.
The equipment solves the problems of low efficiency, high material cost and the like of the traditional additive manufacturing, and can form engineering plastics, building materials, high-viscosity energetic materials, metal slurry, ceramic slurry and other materials.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of an additive manufacturing apparatus provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of an extrusion unit in an additive manufacturing apparatus provided in embodiment 1 of the present invention;
fig. 3 is a schematic diagram of an internal structure of an extrusion unit in additive manufacturing equipment provided in embodiment 1 of the present invention.
Fig. 4 is a schematic view of a structure of a thimble screw in an internal structure of an extrusion unit in additive manufacturing equipment provided by embodiment 1 of the present invention.
Reference numerals: 1. the three-dimensional moving platform comprises a three-dimensional moving platform, 2, an extrusion unit, 3, a rack, 4, a printing platform, 2-1, a first motor, 2-2, a gear box, 2-3, a storage bin, 2-3-1, a storage bin cover plate, 2-3-2, a storage bin body, 2-3-3, a first opening, 2-4, a stirring part, 2-4-1, a sleeving ring, 2-4-2, a stirring rod, 2-5, a screw rod, 2-5-1, a fixing part, 2-5-2, a threaded part, 2-5-3, a thimble, 2-5-31, a thimble body, 2-5-32, a first guide shaft, 2-5-33, a second guide shaft, 2-5-34, a cam seat, 2-5-35, a first guide shaft, 2-5-33, a second guide shaft, 2-5-, 2-6 parts of spring, 2-7 parts of fire arrow, 2-8 parts of machine barrel, 2-9 parts of temperature measuring hole, 2-10 parts of heating device and 2-10 parts of discharging nozzle.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the following embodiments. It is to be understood that the following examples are only illustrative and explanatory of the present invention and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above mentioned contents of the present invention are covered in the protection scope of the present invention.
Unless otherwise indicated, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.
Example 1
An additive manufacturing apparatus as shown in fig. 1, comprising: three-dimensional moving platform 1, two units 2, frame 3, print platform 4 extrude, are fixed with three-dimensional moving platform 1 on the frame 3, extrude that unit 2 fixes on three-dimensional moving platform 1, and print platform 4 is put in the below of extruding unit 2, and print platform 4 fixes the top at frame 3. The three-dimensional mobile platform adopts a known screw rod guide rail structure and consists of four groups of second motors, couplers, screw rods, guide rails and a carrier, wherein the second motors are connected with the screw rods through the couplers, the screw rods are connected with the carrier, and the carrier is connected with the guide rails. The three-dimensional movement of the object carrier can be realized through the driving of the second motor, and the movement space size of the three-dimensional moving platform 1 is as follows: 300X 400X 200mm, the size of the printing platform is 300X 350 mm.
As shown in fig. 2 and 3, the extrusion unit 2 comprises a first motor 2-1, a gear box 2-2, a storage bin 2-3, a stirring part 2-4, a screw 2-5, a fire arrow 2-6, a machine barrel 2-7 and a discharge nozzle 2-10; the first motor 2-1 is connected with the gear box 2-2 through a coupler, the bottom of the gear box 2-2 is connected with the end of the storage bin 2-3, a stirring part 2-4 is arranged in the storage bin 2-3, the screw 2-5 comprises a fixing part 2-5-1, a threaded part 2-5-2 and a thimble 2-5-3 arranged in the threaded part 2-5-2, an output shaft of the gear box 2-2 is connected with the fixing part 2-5-1, and the fixing part 2-5-1 and part of the threaded part extend into the storage bin 2-3. The stirring part 2-4 consists of a socket ring 2-4-1 and a stirring rod 2-4-2 fixed on the socket ring 2-4-1, the size of the socket ring 2-4-1 is matched with that of the fixing part 2-5-1, and the stirring part 2-4 is sleeved on the fixing part 2-5-1 through the socket ring 2-4-1. The storage bin 2-3 comprises a storage bin cover plate 2-3-1 and a conical storage bin body 2-3-2, a first opening 2-3-3 is formed in the storage bin cover plate 2-3-1, the stirring rod 2-4-2 is in a fold line shape, and the bending angle of the stirring rod is consistent with the included angle between the side edge of the storage bin body 2-3-2 and the horizontal plane, so that materials in the storage bin can be fully mixed by the stirring rod.
The thread part 2-5-2 of the screw 2-5 is connected with the fire arrow 2-6 through reverse threads, and part of the thread part 2-5-2 and the fire arrow 2-6 are arranged inside the cylinder 2-7. The fire arrow head 2-6 is provided with variable-pitch threads, the center of the fire arrow head 2-6 coincides with the center of the screw rod 2-5, the taper angle of the fire arrow head 2-6 is consistent with the taper angle of the discharge nozzle 2-10, and the fire arrow head and the discharge nozzle are jointed to realize extrusion discharge of the material contraction section. The bottom of the storage bin 2-3 is connected with the end part of the machine barrel 2-7, and the bottom of the machine barrel 2-7 is connected with the discharging nozzle 2-10 through threads.
A thimble 2-5-3 is arranged in the screw rod 2-5, and the thimble 2-5-3 consists of a thimble body 2-5-31, a first guide shaft 2-5-32, a second guide shaft 2-5-33, a cam seat 2-5-34 and a spring 2-5-35; a through hole is arranged in the radial direction of the thick end of the thimble body 2-5-31, the first guide shaft 2-5-32 and the second guide shaft 2-5-33 are matched with the thimble body 2-5-31 through the through hole, and the first guide shaft 2-5-32 is fixed on a guide groove of a box cover of the gear box 2-2; the guide groove of the gear box cover limits the first guide shaft to enable the first guide shaft not to do circular motion along the screw rod, so that the thimble is prevented from doing circular motion and only can move up and down; the cam seat 2-5-34 is arranged between the first guide shaft 2-5-32 and the second guide shaft 2-5-33 and performs synchronous circular motion along with the screw; the springs 2-5-35 are arranged between the cam seat 2-5-34 and the second guide shaft 2-5-33, and ensure that the lower part of the first guide shaft is in contact fit with the cam curved surface on the cam seat.
The extrusion unit 2 also comprises heating devices 2-9, and the heating devices 2-9 are arranged around the outer parts of the machine barrels 2-7 to meet the requirement of material heating.
The equipment also comprises a microcomputer control end (not shown in figure 1), the microcomputer control end is arranged on the rack and is electrically connected with the three-dimensional mobile station and the extrusion unit, and the movement operation of the extrusion unit is realized through program control.
The additive printing apparatus provided by this embodiment controls the movement of the three-dimensional moving stage carrier through the microcomputer control end under the driving of the digital slice model, and drives the extrusion unit to move. The motor rotates on the extrusion unit to drive the screw rod to rotate, on one hand, the stirring of high-viscosity granular materials in the storage bin is realized through the stirring rod, on the other hand, the material conveying is realized under the rotary extrusion of the screw rod, and the granular materials are promoted to rapidly enter the machine barrel. The fire arrow with the variable-pitch thread can realize extrusion discharging of the material shrinkage section. The ejector pin is arranged in the screw rod, the ejector pin can push materials to extrude out of the discharging nozzle, and particularly, in a high-precision occasion, under the condition that the discharging nozzle is small, the ejector pin can effectively prevent the materials from being blocked. The material is heated to a molten state by a heating device outside the machine barrel, extruded out of the machine barrel under the extrusion of the screw, shaped and solidified on the printing platform, and stacked layer by layer to realize additive manufacturing.
Example 2
Unlike embodiment 1, the heating device was replaced with an ultrasonic vibration device, and the temperature measuring hole was not provided. The outside of the machine barrel is provided with an ultrasonic vibration device which can promote the conveying of high-viscosity materials based on the friction reduction effect of the ultrasound. The equipment provided by the embodiment is suitable for conveying high-viscosity materials.
Example 3
The difference with embodiment 1 is that still set up the second trompil on the storage storehouse apron, be connected with external storage silo through the second trompil, guarantee that the interior material of storage storehouse is sufficient to realize continuous feeding.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An additive manufacturing apparatus, comprising a three-dimensional moving stage and an extrusion unit disposed on the three-dimensional moving stage;
the extrusion unit comprises a first motor, a gear box, a storage bin, a stirring part, a screw, a rocket head, a machine barrel and a discharge nozzle; the first motor is connected with the gear box, the bottom of the gear box is connected with the end part of the storage bin, and a stirring part is arranged in the storage bin;
the screw rod comprises a fixing part and a threaded part, the screw rod penetrates through the storage bin and the machine barrel, one end of the screw rod is connected with the stirring part through the fixing part, the other end of the screw rod is connected with the rocket head through the threaded part, and an output shaft of the gear box is connected with the fixing part;
the stirring part is fixed on the fixing part and comprises a sleeving ring and a stirring rod arranged on the sleeving ring; the number of the stirring rods is at least 2, and the stirring rods are in a circumferentially uniform distribution state; the size of the sleeving ring is matched with that of the fixing part, and the shape of the stirring rod is consistent with that of the storage bin; the rocket head is provided with variable-pitch threads, and the center of the rocket head is superposed with the center of the screw;
the bottom of the storage bin is connected with the end part of the cylinder, and the bottom of the cylinder is connected with the discharging nozzle.
2. The additive manufacturing apparatus of claim 1, wherein the threaded portion passes through the storage bin and the barrel simultaneously, or the threaded portion passes through the barrel separately;
the storage bin comprises a storage bin cover plate and a storage bin body, and a first opening is formed in the storage bin cover plate;
an output shaft of the gear box penetrates through the first opening and is connected with a fixing part connected with a stirring part;
still set up the second trompil on the storage storehouse apron, be connected with external storage silo through the second trompil.
3. Additive manufacturing apparatus according to claim 2,
when the storage bin body is a conical body, the shape of the stirring rod is a fold line shape, and the folding angle of the stirring rod is consistent with the included angle between the side edge of the storage bin body and the horizontal plane;
the first opening is matched with the size of the sleeving ring and the size of the fixing part.
4. The additive manufacturing apparatus according to claim 1, wherein a thimble is arranged inside the screw, a tip of the thimble penetrates through the hot arrow, and the thimble can move up and down in the screw in a controllable manner;
the thick end of the ejector pin is fixed on the gear box;
the thimble comprises a thimble body, a first guide shaft, a second guide shaft, a cam seat and a spring;
a through hole is formed in the radial direction of the thick end of the thimble body, the first guide shaft and the second guide shaft are matched with the thimble body through the through hole, and the first guide shaft is fixed on a guide groove of a box cover of the gear box;
the cam seat is arranged between the first guide shaft and the second guide shaft and can do synchronous circular motion along with the screw;
the spring is disposed between the cam seat and the second guide shaft.
5. Additive manufacturing apparatus according to any one of claims 1-4, wherein the extrusion unit comprises a heating device disposed outside the barrel;
the heating device surrounds the outside of the barrel;
and a temperature measuring hole is formed in the outer wall of the machine barrel.
6. Additive manufacturing apparatus according to any one of claims 1-4, wherein the extrusion unit comprises a vibration device disposed outside the barrel;
the vibrating device surrounds the outer part of the machine barrel;
the vibration device is selected from ultrasonic vibration or pneumatic vibration device.
7. Additive manufacturing apparatus according to any one of claims 1 to 4, wherein the taper angle of the fire arrow is coincident with the taper angle of the tap, the two working in unison;
the connection mode of the thread part and the fire arrow is threaded connection.
8. The additive manufacturing apparatus of claim 1, wherein a lead screw guide structure or a robot structure is selected from the three-dimensional moving stage;
the three-dimensional mobile station comprises a second motor, a coupler, a screw rod, a guide rail and a carrier, wherein the second motor is connected with the screw rod through the coupler, the screw rod is connected with the carrier, and the carrier is connected with the guide rail.
9. The additive manufacturing apparatus of claim 5, comprising a frame on which the three-dimensional moving stage is disposed;
the additive manufacturing apparatus further comprises a printing platform disposed below the extrusion unit, the printing platform being placed above the frame;
the additive manufacturing equipment also comprises a microcomputer control end, the microcomputer control end is arranged on the rack, the microcomputer control end is electrically connected with the three-dimensional mobile station and the extrusion unit, and the movement operation of the extrusion unit is realized through program control;
the microcomputer control end is also electrically connected with the heating device and the ultrasonic device.
10. The additive manufacturing apparatus of claim 1, wherein the material in the storage bin is selected from at least one of a polymer material, a metal slurry, a ceramic slurry, and a construction concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920761204.5U CN210453779U (en) | 2019-05-24 | 2019-05-24 | Screw extrusion variable-precision additive manufacturing equipment with stirring and anti-blocking functions |
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| CN201920761204.5U CN210453779U (en) | 2019-05-24 | 2019-05-24 | Screw extrusion variable-precision additive manufacturing equipment with stirring and anti-blocking functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126263A (en) * | 2019-05-24 | 2019-08-16 | 中国科学院福建物质结构研究所 | A kind of screw extruding change precision increasing material manufacturing equipment of band stirring and choke preventing function |
| CN114308540A (en) * | 2021-12-31 | 2022-04-12 | 浙江虬晟光电技术有限公司 | Mixed extrusion integrated dispenser and LED screen production process |
-
2019
- 2019-05-24 CN CN201920761204.5U patent/CN210453779U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126263A (en) * | 2019-05-24 | 2019-08-16 | 中国科学院福建物质结构研究所 | A kind of screw extruding change precision increasing material manufacturing equipment of band stirring and choke preventing function |
| CN110126263B (en) * | 2019-05-24 | 2024-08-06 | 中国科学院福建物质结构研究所 | Screw extrusion variable-precision additive manufacturing equipment with stirring and anti-blocking functions |
| CN114308540A (en) * | 2021-12-31 | 2022-04-12 | 浙江虬晟光电技术有限公司 | Mixed extrusion integrated dispenser and LED screen production process |
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