CN114770935A - Plastic extrusion device for 3D molding - Google Patents
Plastic extrusion device for 3D molding Download PDFInfo
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- CN114770935A CN114770935A CN202210211341.8A CN202210211341A CN114770935A CN 114770935 A CN114770935 A CN 114770935A CN 202210211341 A CN202210211341 A CN 202210211341A CN 114770935 A CN114770935 A CN 114770935A
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- extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/314—Preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a plastic extrusion device for 3D (three-dimensional) molding, which comprises an input device, a melting and conveying device, a buffering and feeding device, an extrusion and conveying device and an extrusion head, wherein the input device is connected with the melting and conveying device; the plastic strip feeding device has the advantages of reasonable and simple structure, low production cost, convenience in installation and complete functions, the input device arranged in the plastic strip feeding device can continuously feed the plastic strip into the circular cavity to be propped against the outer surface of the conveying heat conduction wheel for heating and melting, and the rotation of the conveying heat conduction wheel is matched, so that the requirement of continuously heating and melting the plastic strip is met, the melted plastic is continuously conveyed into the buffer cavity through the conveying channel for buffer storage, and the stability and the reliability of feeding at different printing speeds are met; the extrusion head provided by the invention can ensure that the two valve cores can be tightly pushed together under the action of the second spring when the two valve cores are not extruded, so that the leakage of the molten plastic is prevented from influencing the quality of a product.
Description
Technical Field
The invention relates to the technical field of 3D (three-dimensional) forming equipment, in particular to a plastic extrusion device for 3D forming.
Background
3D printing is also called rapid prototyping, namely, data and raw materials are put into a 3D printer, and a product is printed layer by layer through computer program control to finally form a finished product. 3D printing has become a trend and is beginning to be widely applied to the field of design, especially industrial design, digital product mold opening and the like, the printing of one mold can be completed within several hours, and the time from development to market investment of many products is saved. At present, the most used molding raw materials of a 3D printer are plastics, and the plastics need to be melted firstly and then are solidified and molded on a bottom plate after being sprayed out by a spray head; the plastic input by the existing 3D molding plastic extrusion device is low in melting efficiency and uneven, so that the supply of the plastic during extrusion is influenced, and in addition, the plastic extrusion device is easy to leak materials, so that the product quality is influenced.
Disclosure of Invention
The present invention is directed to provide a plastic extrusion device for 3D molding to solve the above problems, and the plastic extrusion device solves the problems that the prior plastic extrusion device for 3D molding has low and uneven melting efficiency of plastic input, which affects the supply of plastic during extrusion, and the plastic extrusion device is easy to have material leakage, which affects the quality of products.
In order to solve the above problems, the present invention provides a technical solution: a plastic extrusion device for 3D forming is characterized in that: the device comprises an input device, a melting and conveying device, a buffering and feeding device, an extruding and conveying device and an extruding head; the input device is fixedly connected to the left upper side of the extruding and conveying device; the top of the melting and conveying device is fixedly connected with the bottom of the input device, the right side of the melting and conveying device is fixedly connected to the left side of the extruding and conveying device, an inlet at the upper side of the melting and conveying device is connected with an outlet at the lower side of the input device, and the bottom of the melting and conveying device is fixedly connected with a buffering feeding device; an upper inlet of the buffering feeding device is connected with a lower outlet of the melting and conveying device, and a right outlet of the buffering feeding device is connected with a left inlet of the extruding and conveying device; an extrusion head is fixedly connected to an outlet at the lower side of the extrusion device.
Preferably, the input device comprises an input shell, a guide hole, an inner cavity, a driven roller wheel, a driving roller wheel and a first motor; a vertical guide hole is formed in the right side of the input shell, an inner cavity is formed in the lower right side of the input shell, the inner part of the inner cavity is communicated with the inner part of the guide hole, and a first motor is fixedly connected to the outer part of the rear side of the input shell; the driven roller is movably connected to the right side of the inner cavity; the driving roller is movably connected to the left side of the inner cavity, and the center of the rear side of the driving roller is fixedly connected with an output shaft of the motor.
Preferably, the first motor is a servo motor or a stepping motor.
Preferably, the specific structure of the melting and conveying device comprises a conveying shell, a first heating rod, a conveying heat conduction wheel, a second motor, a conveying channel and a circular cavity; a circular cavity is formed in the conveying shell, and a motor II is fixedly connected to the outer part of the rear side of the conveying shell; the inner part of the circular cavity is movably connected with a conveying heat conduction wheel, the center of the rear side of the conveying heat conduction wheel is fixedly connected with an output shaft of the motor II, and a conveying channel is arranged on the right side of the circular cavity; the first heating rods are arranged in an arc shape and are respectively fixedly connected to the inner parts of the conveying shells around the circular cavities; the inlet on the upper side of the conveying channel is connected with the outlet on the lower side of the input device, and the outlet on the lower side of the conveying channel is connected with the inlet in the upper side of the buffering feeding device.
Preferably, the buffering feeding device comprises a feeding shell, an end cover, a motor III, a transmission shaft I, a spring I, a buffering cavity, a piston, an input port, a feeding hole, a feeding screw rod and a heating rod II; a transverse buffer cavity is arranged in the center of the left side of the feeding shell, a transverse feeding hole is arranged in the center of the right side of the feeding shell, and an outlet on the right side of the feeding hole is connected with an inlet on the left side of the extruding and feeding device; an end cover is fixedly connected to the opening of the left side of the buffer cavity, an input port is arranged on the upper right side of the buffer cavity, and the input port is connected with an outlet on the lower side of the melting and conveying device; the left side of the end cover is fixedly connected with a motor III; the outer part of the left side of the first transmission shaft is movably connected with the inner part of the center of the end cover, the center of the left side of the first transmission shaft is fixedly connected with output shafts of the three right sides of the motor, and the outer part of the right side of the first transmission shaft is movably connected with the center of the buffer cavity; the outer part of the piston is transversely and movably connected to the left side of the inner part of the buffer cavity, the inner part of the center of the piston is movably connected to the outer part of the first transmission shaft, and a first spring is arranged between the inner part of the left side of the piston and the right side surface of the end cover; the feeding screw rod is movably connected inside the feeding hole, and the left end part of the feeding screw rod is fixedly connected with the right end part of the transmission shaft; the second heating rod is a plurality and is uniformly arranged around the outer side of the feeding hole respectively, and the second heating rod is uniformly and fixedly connected to the periphery of the right side of the feeding shell.
Preferably, the left side of the feeding hole is in a bell mouth shape.
Preferably, the extrusion device comprises an extrusion shell, a motor IV, a transmission shaft II, a feeding hole, an extrusion screw rod, a heating rod III and an extrusion hole; a motor IV is fixedly connected to the inner part of the upper side of the extruding and feeding shell, and an extruding and feeding hole is formed in the inner part of the lower side of the extruding and feeding shell; a feed inlet is formed in the left upper side of the extrusion feeding hole, the feed inlet is connected with an outlet in the right side of the buffering feeding device, and an outlet in the lower side of the extrusion feeding hole is connected with an inlet in the upper side of the extrusion head; the second transmission shaft is movably connected in a vertical hole formed in the upper side of the extrusion feeding hole, and the center of the upper side of the second transmission shaft is fixedly connected with an output shaft of the four lower sides of the motor; the extrusion screw rod is movably connected to the inside of the extrusion hole, and the upper end part of the extrusion screw rod is fixedly connected with the lower end parts of the two transmission shafts; the heating rods are evenly arranged around the extruding and feeding holes, and are evenly and fixedly connected to the periphery of the lower side of the extruding and feeding shell.
Preferably, the motor four is a servo motor or a stepping motor.
Preferably, the specific structure of the extrusion head comprises an extrusion shell, a groove, a second spring, a valve core, a semi-conical hole and an extrusion hole; an extrusion hole is formed in the center of the extrusion shell; the left side and the right side of the upper side of the extrusion hole are both provided with grooves; the two valve cores are movably connected inside the corresponding grooves respectively, semi-conical holes are formed in the upper face of the position between the two opposite inner sides of the two valve cores, and a second spring is arranged between the position inside the two opposite outer sides of the two valve cores and the corresponding grooves.
The invention has the beneficial effects that:
(1) the plastic strip feeding device has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions, the input device arranged in the plastic strip feeding device can continuously feed plastic strips into the circular cavity to be propped against the outer surface of the conveying heat-conducting wheel for heating and melting, and the rotation of the conveying heat-conducting wheel is matched, so that the requirement of continuously heating and melting the plastic strips is met, the melted plastic is also favorably and continuously conveyed into the buffer cavity through the conveying channel for buffer storage, and the stability and the reliability of feeding at different printing speeds are met.
(2) The extrusion head arranged in the invention can ensure that the two valve cores can be tightly propped together under the action of the second spring when the two valve cores are not extruded, thereby avoiding the leakage of the molten plastic from affecting the quality of a product.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the input device.
Fig. 3 is a schematic structural view of the melting and conveying device.
Fig. 4 is a schematic structural diagram of a buffering feeding device.
Fig. 5 is a schematic structural view of the extruding device.
Fig. 6 is a schematic view of the structure of the extrusion head.
1-an input device; 2-melting the conveying device; 3-buffer feeding device; 4-an extruding and conveying device; 5-extrusion head; 11-an input housing; 12-a pilot hole; 13-lumen; 14-driven roller wheels; 15-driving roller; 16-a first motor; 21-a conveying housing; 22-heating the first rod; 23-conveying heat-conducting wheels; 24-motor two; 25-a delivery channel; 26-circular lumen; 31-a feed housing; 32-end caps; 33-motor three; 34-a first transmission shaft; 35-spring one; 36-a buffer chamber; 37-a piston; 38-an input port; 39-a feed aperture; 310-a feed screw; 311-heating rod two; 41-extruding the shell; 42-motor four; 43-a second transmission shaft; 44-a feed port; 45-extruding a screw rod; 46-heating rod III; 47-extrusion hole; 51-an extruded shell; 52-a groove; 53-spring two; 54-a valve core; 55-half taper hole; 56-extrusion orifice.
Detailed Description
As shown in fig. 1, the following technical solutions are adopted in the present embodiment: a plastic extrusion device for 3D forming comprises an input device 1, a melting and conveying device 2, a buffering and feeding device 3, an extrusion device 4 and an extrusion head 5; the input device 1 is fixedly connected to the upper left side of the extruding and conveying device 4; the top of the melting and conveying device 2 is fixedly connected with the bottom of the input device 1, the right side of the melting and conveying device 2 is fixedly connected with the left side of the extruding and conveying device 4, an inlet at the upper side of the melting and conveying device 2 is connected with an outlet at the lower side of the input device 1, and the bottom of the melting and conveying device 2 is fixedly connected with a buffering feeding device 3; an inlet on the upper side of the buffering feeding device 3 is connected with an outlet on the lower side of the melting and conveying device 2, and an outlet on the right side of the buffering feeding device 3 is connected with an inlet on the left side of the extruding and conveying device 4; an extrusion head 5 is fixedly connected at the outlet of the lower side of the extrusion device 4.
As shown in fig. 2, the input device 1 specifically includes an input housing 11, a guide hole 12, an inner cavity 13, a driven roller 14, a driving roller 15 and a first motor 16; a vertical guide hole 12 is formed in the right side of the input shell 11, an inner cavity 13 is formed in the lower right side of the input shell 11, the inner part of the inner cavity 13 is communicated with the inner part of the guide hole 12, and a first motor 16 is fixedly connected to the outer part of the rear side of the input shell 11; the driven roller wheel 14 is movably connected to the right side of the inner cavity 13; the driving roller wheel 15 is movably connected to the left side of the inner cavity 13, and the center of the rear side of the driving roller wheel 15 is fixedly connected with an output shaft 16 of the motor I.
Wherein the first motor 16 is a servo motor or a stepping motor, thereby facilitating automatic control by the prior art.
As shown in fig. 3, the melting and conveying device 2 specifically comprises a conveying shell 21, a first heating rod 22, a conveying heat conduction wheel 23, a second motor 24, a conveying channel 25 and a circular cavity 26; a circular cavity 26 is formed in the conveying shell 21, and a second motor 24 is fixedly connected to the outer portion of the rear side of the conveying shell 21; the conveying heat conduction wheel 23 is movably connected inside the circular cavity 26, the center of the rear side of the conveying heat conduction wheel 23 is fixedly connected with an output shaft of the second motor 24, and a conveying channel 25 is arranged on the right side of the circular cavity 26; the heating rods 22 are arranged in an arc shape, and the heating rods 22 are fixedly connected to the inner part of the conveying shell 21 around the circular cavity 26; the inlet on the upper side of the conveying channel 25 is connected with the outlet on the lower side of the input device 1, and the outlet on the lower side of the conveying channel 25 is connected with the inlet on the upper side of the buffering feeding device 3.
As shown in fig. 4, the buffer feeding device 3 specifically includes a feeding housing 31, an end cap 32, a motor three 33, a transmission shaft one 34, a spring one 35, a buffer chamber 36, a piston 37, an input port 38, a feeding hole 39, a feeding screw rod 310, and a heating rod two 311; a transverse buffer cavity 36 is arranged in the center of the left side of the feeding shell 31, a transverse feeding hole 39 is arranged in the center of the right side of the feeding shell 31, and the outlet of the right side of the feeding hole 39 is connected with the inlet of the left side of the extruding and conveying device 4; an end cover 32 is fixedly connected to an opening at the left side of the buffer cavity 36, an input port 38 is arranged at the upper right side of the buffer cavity 36, and the input port 38 is connected with an outlet at the lower side of the melting and conveying device 2; the left side of the end cover 32 is fixedly connected with a motor III 33; the outer part of the left side of the first transmission shaft 34 is movably connected with the inner part of the center of the end cover 32, the center of the left side of the first transmission shaft 34 is fixedly connected with the output shaft of the right side of the third motor 33, and the outer part of the right side of the first transmission shaft 34 is movably connected with the center of the buffer cavity 36; the outer part of the piston 37 is transversely movably connected to the left side in the buffer cavity 36, the central inner part of the piston 37 is movably connected to the outer part of the first transmission shaft 34, and a first spring 35 is arranged between the inner part of the left side of the piston 37 and the right side face of the end cover 32; the feeding screw rod 310 is movably connected inside the feeding hole 39, and the left end of the feeding screw rod 310 is fixedly connected with the right end of the first transmission shaft 34; the second heating rod 311 is a plurality of heating rods, the plurality of heating rods 311 are respectively and uniformly located on the periphery of the outer side of the feeding hole 39, and the plurality of heating rods 311 are respectively and uniformly and fixedly connected to the periphery of the right side of the feeding shell 31.
Wherein the left side of the feed aperture 39 is flared to facilitate the entry of molten plastic into the feed aperture 39.
As shown in fig. 5, the specific structure of the extruding and feeding device 4 includes an extruding and feeding housing 41, a motor four 42, a transmission shaft two 43, a feeding port 44, an extruding and feeding screw rod 45, a heating rod three 46 and an extruding and feeding hole 47; a motor IV 42 is fixedly connected to the inner part of the upper side of the extruding and conveying shell 41, and an extruding and conveying hole 47 is formed in the inner part of the lower side of the extruding and conveying shell 41; a feed inlet 44 is formed in the upper left side of the extrusion hole 47, the feed inlet 44 is connected with an outlet in the right side of the buffering feed device 3, and an outlet in the lower side of the extrusion hole 47 is connected with an inlet in the upper side of the extrusion head 5; the second transmission shaft 43 is movably connected in a vertical hole formed in the upper side of the extruding and feeding hole 47, and the center of the upper side of the second transmission shaft 43 is fixedly connected with an output shaft at the lower side of the fourth motor 42; the extrusion screw rod 45 is movably connected inside the extrusion hole 47, and the upper end part of the extrusion screw rod 45 is fixedly connected with the lower end part of the transmission shaft II 43; the heating rods 46 are a plurality of heating rods 46, the heating rods 46 are uniformly located around the extruding and feeding hole 47, and the heating rods 46 are uniformly and fixedly connected to the periphery of the lower side of the extruding and feeding shell 41.
Wherein the motor four 42 is a servo motor or a stepping motor, thereby facilitating automatic control by the prior art.
As shown in fig. 6, the specific structure of the extrusion head 5 includes an extrusion housing 51, a groove 52, a second spring 53, a valve core 54, a semi-conical hole 55 and an extrusion hole 56; an extrusion hole 56 is formed in the center of the extrusion shell 51; the left side and the right side of the upper side of the extrusion hole 56 are both provided with grooves 52; the number of the valve cores 54 is two, the two valve cores 54 are movably connected inside the corresponding grooves 52 respectively, a half-cone hole 55 is formed in the upper surface between the opposite inner sides of the two valve cores 54, and a second spring 53 is arranged between the corresponding outer side inner parts of the two valve cores 54 and the corresponding grooves 52.
The using state of the invention is as follows: the plastic belt melting device has the advantages of reasonable and simple structure, low production cost, convenience in installation and complete functions, when the plastic belt melting device is used, firstly, a plastic belt is inserted into the guide hole 12, then the first motor 16 is started to drive the driving roller 15 to rotate clockwise to convey the plastic belt into the melting conveying device 2 for melting and conveying, meanwhile, the second motor 24 is electrified to rotate and the first heating rod 22 is electrified to heat, the first heating rod 22 is heated to transfer heat to the inside of the circular cavity 26 and convey the heat conduction wheel 23, the second motor 24 rotates to drive the heated conveying heat conduction wheel 23 to rotate clockwise, the input device 1 arranged here can continuously convey the plastic belt into the circular cavity 26 to push against the outer surface of the conveying heat conduction wheel 23 to heat and melt, and the rotation of the conveying heat conduction wheel 23 is matched, so that the requirement for continuously heating and melting the plastic belt is met, and the melted plastic belt is also beneficial for continuously conveying the melted plastic belt into the buffer cavity 36 through the conveying channel 25 to enter continuously Row buffer storage, thereby satisfied the stability and the reliability of the speed feed of different printings, then three 33 starter motors drive feed hob 310 through transmission shaft 34 and rotate, thereby can carry the plastics that melt in the cushion chamber 36 to crowded send hole 47 in, then drive crowded spiral shell pole 45 that send through transmission shaft two 43 at four 42 starter motors and rotate and will melt plastics and carry the processing of extruding and carrying out the printing as required, and the extrusion head 5 that sets up, can ensure that two case 54 can make its top tightly together under the effect of spring two 53 when non-extruding, thereby avoided the quality that leaks the influence product of melting plastics.
In the case of the control mode of the invention, which is controlled by manual actuation or by means of existing automation techniques, the wiring diagram of the power elements and the provision of power are known in the art and the invention is primarily intended to protect the mechanical means, so that the control mode and wiring arrangement are not explained in detail in the present invention.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While there have been shown and described what are at present considered to be the basic and essential features and advantages of the invention, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. A plastics extrusion device for 3D shaping which characterized in that: comprises an input device (1), a melting and conveying device (2), a buffering and feeding device (3), an extruding and conveying device (4) and an extruding head (5);
the input device (1) is fixedly connected to the left upper side of the extruding and conveying device (4);
the top of the melting and conveying device (2) is fixedly connected with the bottom of the input device (1), the right side of the melting and conveying device (2) is fixedly connected with the left side of the extruding and conveying device (4), an inlet at the upper side of the melting and conveying device (2) is connected with an outlet at the lower side of the input device (1), and the bottom of the melting and conveying device (2) is fixedly connected with a buffering feeding device (3);
an upper inlet of the buffering feeding device (3) is connected with a lower outlet of the melting and conveying device (2), and a right outlet of the buffering feeding device (3) is connected with a left inlet of the extruding and conveying device (4);
an extrusion head (5) is fixedly connected at the outlet of the lower side of the extrusion device (4).
2. A plastic extrusion device for 3D forming, according to claim 1, characterized in that: the input device (1) comprises an input shell (11), a guide hole (12), an inner cavity (13), a driven roller (14), a driving roller (15) and a first motor (16);
a vertical guide hole (12) is formed in the right side of the input shell (11), an inner cavity (13) is formed in the right lower side of the input shell (11), the inner part of the inner cavity (13) is communicated with the inner part of the guide hole (12), and a first motor (16) is fixedly connected to the outer part of the rear side of the input shell (11);
the driven roller (14) is movably connected to the right side of the inner cavity (13);
the driving roller (15) is movably connected to the left side of the inner cavity (13), and the center of the rear side of the driving roller (15) is fixedly connected with an output shaft of the motor I (16).
3. A plastic extrusion device for 3D forming according to claim 2, characterized in that: the first motor (16) is a servo motor or a stepping motor.
4. A plastic extrusion device for 3D forming, according to claim 1, characterized in that: the melting and conveying device (2) comprises a conveying shell (21), a first heating rod (22), a conveying heat conduction wheel (23), a second motor (24), a conveying channel (25) and a circular cavity (26);
a circular cavity (26) is formed in the conveying shell (21), and a second motor (24) is fixedly connected to the outer portion of the rear side of the conveying shell (21);
a conveying heat conduction wheel (23) is movably connected inside the circular cavity (26), the center of the rear side of the conveying heat conduction wheel (23) is fixedly connected with an output shaft of a second motor (24), and a conveying channel (25) is arranged on the right side of the circular cavity (26);
the heating rods I (22) are arranged in a plurality of numbers, and the heating rods I (22) are all arranged in an arc shape and are respectively and fixedly connected to the inner parts of the conveying shells (21) at the periphery of the circular cavity (26);
an inlet on the upper side of the conveying channel (25) is connected with an outlet on the lower side of the input device (1), and an outlet on the lower side of the conveying channel (25) is connected with an inlet in the upper side of the buffering feeding device (3).
5. A plastic extrusion device for 3D forming, according to claim 1, characterized in that: the buffering feeding device (3) comprises a feeding shell (31), an end cover (32), a motor III (33), a transmission shaft I (34), a spring I (35), a buffering cavity (36), a piston (37), an input port (38), a feeding hole (39), a feeding screw rod (310) and a heating rod II (311);
a transverse buffer cavity (36) is arranged in the center of the left side of the feeding shell (31), a transverse feeding hole (39) is arranged in the center of the right side of the feeding shell (31), and the right outlet of the feeding hole (39) is connected with the left inlet of the extruding and conveying device (4);
an end cover (32) is fixedly connected to an opening at the left side of the buffer cavity (36), an input port (38) is arranged at the right upper side of the buffer cavity (36), and the input port (38) is connected with an outlet at the lower side of the melting and conveying device (2);
the left side of the end cover (32) is fixedly connected with a motor III (33);
the outer part of the left side of the first transmission shaft (34) is movably connected with the inner part of the center of the end cover (32), the center of the left side of the first transmission shaft (34) is fixedly connected with the output shaft of the right side of the motor III (33), and the outer part of the right side of the first transmission shaft (34) is movably connected with the center of the buffer cavity (36);
the outer part of the piston (37) is transversely movably connected to the left side in the buffer cavity (36), the inner part of the center of the piston (37) is movably connected to the outer part of the first transmission shaft (34), and a first spring (35) is arranged between the inner part of the left side of the piston (37) and the right side face of the end cover (32);
the feeding screw rod (310) is movably connected inside the feeding hole (39), and the left end of the feeding screw rod (310) is fixedly connected with the right end of the first transmission shaft (34);
the second heating rod (311) is a plurality of which is respectively and uniformly positioned around the outer side of the feeding hole (39), and the second heating rod (311) is respectively and uniformly fixedly connected inside the right side of the feeding shell (31).
6. A plastic extrusion device for 3D forming, according to claim 5, characterized by: the left side of the feeding hole (39) is in a bell mouth shape.
7. A plastic extrusion device for 3D forming according to claim 1, wherein: the extrusion device (4) comprises an extrusion shell (41), a motor IV (42), a transmission shaft II (43), a feed port (44), an extrusion screw rod (45), a heating rod III (46) and an extrusion hole (47);
a motor IV (42) is fixedly connected to the inner part of the upper side of the extruding and conveying shell (41), and an extruding and conveying hole (47) is formed in the inner part of the lower side of the extruding and conveying shell (41);
a feed inlet (44) is formed in the left upper side of the extruding and feeding hole (47), the feed inlet (44) is connected with an outlet in the right side of the buffering and feeding device (3), and an outlet in the lower side of the extruding and feeding hole (47) is connected with an inlet in the upper side of the extruding head (5);
the second transmission shaft (43) is movably connected into a vertical hole formed in the upper side of the extruding and feeding hole (47), and the center of the upper side of the second transmission shaft (43) is fixedly connected with an output shaft at the lower side of the fourth motor (42);
the extrusion screw rod (45) is movably connected inside the extrusion hole (47), and the upper end part of the extrusion screw rod (45) is fixedly connected with the lower end part of the transmission shaft II (43);
the heating rod three (46) is a plurality, the heating rod three (46) are respectively and uniformly located around the extruding and conveying hole (47), and the heating rod three (46) are respectively and uniformly fixedly connected inside the periphery of the lower side of the extruding and conveying shell (41).
8. A plastic extrusion apparatus for 3D forming according to claim 7, wherein: the motor IV (42) is a servo motor or a stepping motor.
9. A plastic extrusion device for 3D forming, according to claim 1, characterized in that: the specific structure of the extrusion head (5) comprises an extrusion shell (51), a groove (52), a second spring (53), a valve core (54), a semi-conical hole (55) and an extrusion hole (56);
an extrusion hole (56) is formed in the center of the extrusion shell (51);
grooves (52) are formed in the left side and the right side of the upper side of the extrusion hole (56);
the two valve cores (54) are movably connected inside the corresponding grooves (52), the upper side between the opposite inner sides of the two valve cores (54) is provided with a semi-conical hole (55), and a second spring (53) is arranged between the inner side of the opposite outer sides of the two valve cores (54) and the corresponding grooves (52).
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| CN202210211341.8A CN114770935B (en) | 2022-03-05 | 2022-03-05 | Plastic extrusion device for 3D molding |
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| CN202210211341.8A CN114770935B (en) | 2022-03-05 | 2022-03-05 | Plastic extrusion device for 3D molding |
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| CN114770935B CN114770935B (en) | 2023-04-21 |
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