CN210911157U

CN210911157U - Quick forming feeding device

Info

Publication number: CN210911157U
Application number: CN201921710321.5U
Authority: CN
Inventors: 成佳庆; 张凯; 于泽源; 陈领; 郭鑫; 于淼; 赵武; 万浩; 杜琳; 蒋薇; 吴年汉
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-03
Anticipated expiration: 2029-10-12

Abstract

The utility model relates to the technical field of rapid prototyping, which solves the problems of insufficient uniform and stable feeding of melt liquid and poor preparation effect in rapid prototyping, and provides a rapid prototyping feeding device, which comprises a cylinder body, a piston, a driving mechanism, a solenoid valve, a heating element and a metal nozzle; the cylinder body is provided with a melting cavity, the top of the cylinder body is provided with a discharge hole communicated with the melting cavity, and the bottom of the cylinder body is provided with a liquid discharge port communicated with the melting cavity; the piston is in sliding fit with the melting cavity; the driving mechanism is connected with the piston to drive the piston to slide into the cylinder body from the discharge hole or slide out of the cylinder body from the discharge hole; the heating element is arranged at the bottom of the melting cavity and is positioned at the liquid discharge port. The printing material in the melting cavity is melted by the heating element heating cylinder body to form molten liquid, the external air is effectively prevented from entering the melting cavity, the air content in the melting cavity is reduced, the piston moves to enable the molten liquid to be stably discharged from the metal nozzle, and the quality of a formed product is improved.

Description

Quick forming feeding device

Technical Field

The utility model relates to a quick shaping technical field particularly, relates to quick shaping feeding device.

Background

The Rapid Prototyping (RP) technology is an advanced manufacturing technology developed in the nineties of the twentieth century, is a key common technology for developing and serving new products of manufacturing enterprises, and has positive promoting effects on promoting product innovation of enterprises, shortening the development cycle of the new products and improving the competitiveness of the products. The existing working principle comprises a 3DP technology (the 3DP process (3DP) is the rapid forming of the current technology), an SLA three-dimensional lithography technology (SLA three-dimensional printing is also called three-dimensional photoetching and light forming, liquid light-cured resin is filled in a liquid tank and can be cured in a certain area under the irradiation of ultraviolet laser with a certain dosage), an SLS selective laser sintering technology (SLS selective laser sintering, an infrared laser is adopted as an energy source, and used forming materials are mostly powder materials. The inventors found that the melt used in the field of rapid prototyping had problems in that the feeding was not uniform enough and stable and the production effect was poor, thereby affecting the quality and accuracy of the molded product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rapid prototyping feeding device to alleviate the used meltwater of rapid prototyping and feed the problem that enough uniformity is stable and preparation effect is poor.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides a rapid prototyping feeding device, including cylinder body, piston, actuating mechanism, solenoid valve, heating member and metal nozzle; the cylinder body is provided with a melting cavity, the top of the cylinder body is provided with a discharge hole communicated with the melting cavity, and the bottom of the cylinder body is provided with a liquid discharge port communicated with the melting cavity; the piston is in sliding fit with the melting cavity; the driving mechanism is connected with the piston to drive the piston to slide into the cylinder body from the discharge hole or slide out of the cylinder body from the discharge hole; the heating element is arranged in the melting cavity and is positioned at the liquid discharge port; the metal nozzle is arranged at the liquid outlet, and the electromagnetic valve is arranged at the metal nozzle.

Optionally: the rapid forming feeding device comprises a feeding amount mechanism, wherein the feeding amount mechanism comprises a pushing piece and an elastic piece; the pushing piece and the piston are arranged at the driving end of the driving mechanism side by side at intervals, the driving end of the driving mechanism is connected with the pushing piece, and the elastic piece is connected between the pushing piece and the piston so that the distance between the pushing piece and the piston is adjustable.

Optionally: the feed amount mechanism also comprises a plurality of guide rods; one end of each guide rod is fixed with the piston, and the other end of each guide rod is connected with the pushing piece in a sliding mode.

Optionally: the rapid forming and feeding device also comprises a water cooling mechanism;

the water cooling mechanism comprises a water cooling cylinder body sleeved on the periphery of the cylinder body, the water cooling cylinder body is provided with a water cooling cavity distributed around the periphery of one end of the cylinder body, which is provided with a liquid outlet, and the water cooling cylinder body is provided with a water inlet and a water outlet which are communicated with the water cooling cavity; the water-cooling cylinder body is far away from the liquid outlet relative to the heating element.

Optionally: the water-cooling cylinder body comprises a first sleeve piece and a second sleeve piece; the first sleeve is provided with a columnar clamping groove which can be matched with one end of the cylinder body provided with the liquid outlet, and the bottom of the clamping groove is provided with a discharge port which can correspond to the liquid outlet; the second sleeve is arranged on the outer side of the first sleeve in a sleeved mode and connected with the first sleeve, and a water cooling cavity is formed between the first sleeve and the second sleeve.

Optionally: the first sleeve comprises a first cylinder body forming a columnar clamping groove and an annular disc connected to the periphery of the first cylinder body; the second sleeve piece comprises a hollow second barrel, a first connecting disc and a second connecting disc, the first connecting disc and the second connecting disc are connected to the two ends of the second barrel, the first connecting disc is used for being sleeved on the periphery of the first barrel and is in sealing connection with the first barrel, the second connecting disc is used for being attached to the annular disc and is in sealing connection with the annular disc, and a water cooling cavity is formed between the inner wall of the second barrel and the outer wall of the first barrel.

Optionally: the water cooling mechanism also comprises a water supply loop, a water tank and a water pump motor, wherein the water tank and the water pump motor are arranged on the water supply loop; the water-cooling cylinder body is arranged in the water supply loop.

Optionally: the heating element is a silica gel heating sheet which is arranged at the end part of one end of the cylinder body, which is provided with the liquid outlet, and the middle part of the silica gel heating sheet is provided with a hole corresponding to the liquid outlet; the silica gel heating plate is attached to the bottom of the clamping groove.

Optionally: the inner diameter of the melting cavity is gradually increased from the end of the cylinder body provided with the discharge port to the end of the cylinder body provided with the liquid discharge port.

Optionally: the inner wall of one end of the melting cavity close to the liquid outlet is convex towards the direction close to the liquid outlet to form an arc-shaped wall.

The beneficial effects of the utility model include:

the rapid forming feeding device melts the printing material in the melting cavity by heating the cylinder body through the heating element to form molten liquid, so that the external air is effectively prevented from entering the melting cavity, and the air content in the melting cavity is reduced; the electromagnetic valve at the lower end of the liquid discharge port controls the opening and closing of the liquid discharge port, when printing materials do not completely form molten liquid, the electromagnetic valve is closed, and when the molten liquid is formed, the molten liquid can be stably discharged from the metal nozzle through the movement of the piston, so that the complete accumulation of the materials is realized, and the quality of a formed product is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first view angle of a rapid prototyping feeding device according to an embodiment of the present invention;

fig. 2 is a schematic view of a matching structure between a water cooling structure and a cylinder body provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first external member according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second external member according to an embodiment of the present invention;

fig. 5 is a schematic partial structural view of a rapid prototyping feeding device according to an embodiment of the present invention;

fig. 6 is a schematic partial structural view of a rapid prototyping feeding device according to an embodiment of the present invention;

fig. 7 is a schematic partial structural view of a rapid prototyping feeding device according to an embodiment of the present invention;

fig. 8 is a schematic partial structural view of a rapid prototyping feeding device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second viewing angle of the rapid prototyping feeding device according to the embodiment of the present invention.

Icon: 100-cylinder body; 110-a melting chamber; 111-an arcuate wall; 120-discharging port; 130-liquid discharge port; 131-a metal nozzle; 132-a solenoid valve; 200-a heating element; 300-a drive mechanism; 400-a water cooling mechanism; 410-water cooling the cylinder body; 420-a first kit; 421-a card slot; 422-discharge port; 423-annular disc; 430-a second kit; 431-mating grooves; 432-first connection port; 433 — a second connection port; 434-connecting disc; 440-a water-cooled cavity; 441-a water inlet; 442-water outlet; 450-a water tank; 460-a water pump motor; 500-feed amount mechanism; 501-a piston; 504-a pusher member; 505-polished rod screw; 506-a spring; 510-a guide assembly; 511-a slide rail; 512-a slider; 520-a fixing frame; 521-an attaching member; 522-a connector; 530-a motor; 540-screw mandrel; 541-a screw flange; 550-a feed tube; 551-upper flange; 552-lower flange; 600-a top frame; 700-a chassis; 800-connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present invention do not require that the components be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, in the field of rapid prototyping at home and abroad, the inventor finds that the melt used in the rapid prototyping process has the problems of insufficient uniform and stable feeding and poor preparation effect, and further influences the quality and precision of printed products. A series of works such as the melting of printing the material, transport, printing need a supporting mechanical structure to accomplish, does not have such printer at present, and this technical problem can be alleviated to the rapid prototyping feeding device that this embodiment provided.

In the present embodiment, the rapid prototyping feeding device is mainly used for feeding the molten liquid state of the printing material, and the rapid prototyping feeding device of the present embodiment will be described in detail with reference to fig. 1 to 9.

Referring to fig. 1 and fig. 2, a rapid prototyping feeding device according to an embodiment of the present invention includes a cylinder 100, a piston 501, a driving mechanism 300, a solenoid valve 132, a heating element 200, and a metal nozzle 131; the cylinder body 100 is provided with a melting cavity 110, the top of the cylinder body 100 is provided with a discharge hole 120 communicated with the melting cavity 110, and the bottom of the cylinder body 100 is provided with a liquid discharge hole 130 communicated with the melting cavity 110; the piston 501 is in sliding fit with the melting chamber 110; the driving mechanism 300 is connected to the piston 501 to drive the piston 501 to slide into the cylinder 100 from the discharge port 120 or slide out of the cylinder 100 from the discharge port 120; the heating element 200 is arranged in the melting chamber 110 and is positioned at the liquid outlet 130; the metal nozzle 131 is provided in the drain port 130, and the electromagnetic valve 132 is provided in the metal nozzle 131. In this embodiment, the printing material is mainly used in the field of rapid prototyping.

When printing materials are placed in the melting chamber 110, the cylinder 100 in the feeding mechanism is used for melting the printing materials, the heating element 200 heats the cylinder 100 to melt the printing materials, the electromagnetic valve 132 is opened, and then the piston 501 is driven by the driving mechanism 300 to extrude the molten colloid to be discharged from the metal nozzle 131 through the liquid discharge port 130, so that molten liquid drops are formed. The specific implementation process is as follows: the printing material is arranged in the melting cavity 110, the heating element 200 arranged on the cylinder body 100 can melt the printing material completely, and the printing material melting liquid is discharged through the metal nozzle 131 under the pushing action of the driving mechanism 300. Specifically, the lower end of the liquid outlet 130 is provided with the electromagnetic valve 132, when the printing material does not completely form melt, the electromagnetic valve 132 is closed, when the melt is formed, the movement of the piston 501 enables the melt to be stably discharged from the liquid outlet 130 of the metal nozzle 131, and the quality of the formed printing product is improved. This scheme makes the printing material all melt through heating member 200 heating cylinder body 100, can effectively avoid melting the entering of in-process air, guarantees to print in-process metal nozzle and discharges the melting liquid steadily.

Referring to fig. 2, in the present embodiment: the inner diameter of the melting chamber 110 gradually increases from the end of the cylinder 100 where the drain port 120 is provided to the end of the cylinder 100 where the drain port 130 is provided. The influence of the creeping phenomenon can be reduced or avoided.

In this embodiment, an included angle is formed between the outer surface and the inner surface of the cylinder block 100. Specifically, the cylinder block 100 has an included angle of 0.5 ° between the outer surface and the inner surface. Specifically, the cylinder 100 is cut by a vertical plane to form a first straight line with the outer surface of the cylinder 100 and a second straight line with the inner surface of the cylinder 100, and the included angle between the first straight line and the second straight line is 0.5 °. The included angle may be less than or greater than 0.5 °, e.g., 0.2 °, 0.4 °, etc.

With continued reference to fig. in this embodiment: the heating member 200 is a silica gel heating sheet, the silica gel heating sheet is disposed at the end of the cylinder body 100 at which the liquid outlet 130 is disposed, and a hole corresponding to the liquid outlet 130 is disposed in the middle of the silica gel heating sheet. Specifically, the silica gel heating plate is annular.

One important part of rapid molding is temperature control, namely, a silica gel heating sheet is used for heating the cylinder body 100, the conveying mechanism and the spray head mechanism, and meanwhile, a corresponding cooling structure is matched, so that the temperature of the cylinder body is in a proper range. The bottom of the printing material is melted by adopting the silica gel heating plate, and then the printing material is matched with the water cooling mechanism 400, so that the temperature gradient distribution of the printing material in the cylinder body 100 meets the requirement.

Referring to fig. 2, in the present embodiment: the rapid prototyping feeding device further comprises a water cooling mechanism 400; the water cooling mechanism 400 comprises a water cooling cylinder body 410 sleeved on the periphery of the cylinder body 100, the water cooling cylinder body 410 is provided with a water cooling cavity 440 distributed around the periphery of one end of the cylinder body 100, which is provided with the liquid outlet 130, and the water cooling cylinder body 410 is provided with a water inlet 441 and a water outlet 442 which are communicated with the water cooling cavity 440; the water-cooled cylinder 410 is away from the drain 130 relative to the heating member 200.

When guaranteeing that the printing material that stretches into cylinder body 100 melts completely, still need consider the cooling to cylinder body 100 after the heating, so need cool off cylinder body 100, adopt water cooling mechanism 400 in this embodiment, show according to the simulation result that the water cooling efficiency of water cooling mechanism 400 will be higher than forced air cooling efficiency far away.

With continued reference to fig. 2, specifically: the water-cooled cylinder 410 includes a first sleeve 420 and a second sleeve 430; the first sleeve 420 is provided with a cylindrical clamping groove 421 which can be matched with one end of the cylinder body 100 provided with the liquid outlet 130, and the bottom of the clamping groove 421 is provided with a discharge port 422 which can correspond to the liquid outlet 130; the second sleeve 430 is sleeved outside the first sleeve 420 and connected with the first sleeve 420 to form a water cooling cavity 440 between the first sleeve 420 and the second sleeve 430.

Referring to fig. 3, specifically, the first sleeve 420 includes a first cylinder forming a cylindrical slot 421 and a ring plate 423 connected to the outer periphery of the first cylinder.

Referring to fig. 4, specifically, the second sleeve 430 includes a hollow second cylinder, and a first connecting disc 434 and a second connecting disc 434 connected to two ends of the second cylinder, the first connecting disc 434 is used for being sleeved on the periphery of the first cylinder and being hermetically connected with the first cylinder, the second connecting disc 434 is used for being attached to the annular disc 423 and being hermetically connected with the annular disc, and a water cooling cavity 440 is formed between the inner wall of the second cylinder and the outer wall of the first cylinder.

With continued reference to fig. 4, that is, the second sleeve 430 is provided with a cylindrical fitting groove 431 capable of being sleeved on the outer periphery of the first sleeve 420 and forming a water cooling cavity 440 with the outer periphery of the first sleeve 420; one end of the second sleeve 430 is provided with a first connection port 432 which is communicated with the matching groove 431 and can be connected with the periphery of the first sleeve 420 in a sealing way; the second cover member 430 has a second connection port 433 which communicates with the engagement groove 431 and has a connection plate 434 on the outer circumference thereof, and the connection plate 434 and the annular plate 423 are hermetically connected.

Referring to fig. 2 again, the end of the cylinder block 100 where the liquid outlet 130 is provided is inserted into the cylindrical neck 421, and a water cooling chamber 440 is formed between the outer wall of the first sleeve 420 and the inner wall of the second sleeve 430 to cool the outer circumference of the cylinder block 100.

The top of the water cooling cavity 440 is sealed by the sealing connection of the first connection port 432 and the periphery of the first sleeve 420, and a sealing ring can be arranged at the top; the bottom of the water cooling cavity 440 is sealed through the sealing connection of the annular disc 423 and the connecting disc 434, and a sealing ring can be arranged between the annular disc 423 and the connecting disc 434 to enhance the sealing effect.

The first sleeve piece 420 and the second sleeve piece 430 are adopted, so that the disassembly and the assembly are convenient; the first sleeve 420 is provided with a clamping groove 421, so that the position of the cylinder body 100 is limited; second kit 430 is used to form a cooling cavity defined in the cooling section of cylinder 100.

Referring to fig. 5, with reference to fig. 1, in the present embodiment: the rapid prototyping feeding device comprises a feeding mechanism 500, wherein the feeding mechanism 500 comprises a pushing piece 504 and an elastic piece; the pushing piece 504 and the piston 501 are arranged at the driving end of the driving mechanism 300 side by side at intervals, the driving end of the driving mechanism 300 is connected with the pushing piece 504, and the elastic piece is connected between the pushing piece 504 and the piston 501, so that the distance between the pushing piece 504 and the piston 501 is adjustable. Specifically, the resilient member is a spring 506.

Referring to fig. 5, in the present embodiment: the feed amount mechanism 500 further includes a plurality of guide rods; one end of each of the plurality of guide rods is fixed to the piston 501, and the other end of each of the plurality of guide rods is slidably connected to the pusher 504. Specifically, the guide rod is a polished rod screw 505.

Referring to fig. 5, specifically, a plurality of polished rod screws 505 are arranged at intervals in the circumferential direction of the pushing member 504, one end of each polished rod screw 505 slidably penetrates through the pushing member 504, the other end of each polished rod screw 505 is fixedly connected with the piston 501, the head of each polished rod screw 505 is located on one side of the pushing member 504, which is far away from the piston 501, a spring 506 is sleeved on the periphery of each polished rod screw 505, and two ends of each spring 506 respectively abut against the pushing member 504 and the piston 501.

When the driving mechanism 300 pushes the pushing piece 504 to move downwards, the spring 506 and the polished rod screw 505 are matched with each other, so that the overall vibration is reduced, and the control precision of the driving mechanism 300 is improved.

Referring to fig. 6, in the present embodiment, the driving mechanism 300 further includes at least two guiding assemblies 510 uniformly distributed along the periphery of the pushing member 504 at intervals, and a fixing frame 520; each guide assembly 510 comprises a slide rail 511 arranged parallel to the central axis direction of the melting chamber 110 and a slide block 512 slidably engaged with the slide rail 511; each sliding block 512 is connected with the outer wall of the pushing part 504 through a fixed frame 520.

Referring to fig. 6, specifically, at least two guide assemblies 510 are provided, and at least two fixing frames 520 are also provided; in this embodiment, three guide assemblies 510 and three fixing frames 520 are respectively provided.

The three fixing frames 520 are uniformly distributed on the plane where the pushing piece 504 is located, one end of each fixing frame 520 is tightly attached to the pushing piece 504, and a gap is formed between every two fixing frames 520 and can be connected through screws to generate a pretightening force so that the pushing piece 504 is fixed; the other end of the fixed frame 520 is connected with the linear slide rail 511 through the slide block 512, so that the pushing element 504 can move vertically and vertically without deviation to cause the piston 501 to incline.

Referring to fig. 6, in the present embodiment, each fixing frame 520 includes an attaching member 521 and a connecting member 522; the fitting piece 521 is an arc-shaped strip, and one side of the arc-shaped strip can be abutted against and fitted with the outer side wall of the pushing piece 504; the connecting member 522 connects the engaging member 521 and the sliding block 512. So as to form a pre-load force between the abutting pieces 521 to clamp the pushing piece 504.

With continued reference to fig. specifically, the arc-shaped strip includes three smoothly-transitional arc-shaped sections, wherein the arc-shaped sections on two sides are recessed toward one side of the pushing member 504, the arc-shaped section in the middle is recessed toward the side away from the pushing member 504, and the arc-shaped section in the middle is in abutting contact with the outer side wall of the pushing member 504. Further enhancing the clamping force on the pusher 504.

Referring to fig. 7, in the present embodiment, an inner wall of the melting chamber 110 near the liquid outlet 130 is protruded toward the liquid outlet 130 to form an arc-shaped wall 111.

Referring to fig. 7 and 8, in the present embodiment, the driving mechanism 300 further includes a motor 530, a lead screw 540, and a feeding tube 550; the screw rod 540 is arranged in parallel with the central axis direction of the melting cavity 110 and is in driving connection with the output end of the motor 530; the feeding pipe 550 is movably sleeved on the periphery of the screw rod 540, one end of the feeding pipe 550 is provided with an upper flange 551 connected with a screw rod flange 541 which is sleeved on the periphery of the screw rod 540 in a threaded manner, and the other end of the feeding pipe 550 is provided with a lower flange 552 connected with the pushing piece 504.

The motor 530 is adopted, in this embodiment, the linear motor 530 is adopted to drive the lead screw to generate a rotation motion, the lead screw is provided with a lead screw flange 541 which can convert the rotation motion of the lead screw into a linear feeding motion of the lead screw flange 541, the lead screw flange 541 is connected with an upper flange 551 of the feeding pipe 550 through four screws, the feeding pipe 550 is of a hollow structure, the upper part of the aluminum pipe is connected with the upper flange 551, and the lower part of the aluminum pipe is connected with a lower flange 552. The linear motion of the screw flange 541 drives the feed pipe 550 to move downward to push the pushing member 504 connected with the lower flange 552 to move.

Referring to fig. 9, specifically, the rapid prototyping feeding device further includes a top frame 600, a bottom frame 700, and a connecting rod 800 connecting the top frame and the bottom frame 700, wherein the connecting rod 800 is disposed along a direction parallel to a central axis of the melting chamber 110; at least three fixing legs are arranged at intervals along the circumferential direction of the top frame 600, at least three connecting legs are arranged at intervals along the circumferential direction of the bottom frame 700, and each connecting leg is connected with one fixing leg through a connecting rod 800; the driving mechanism 300 is disposed on the top frame 600, the slide rail 511 is disposed on the connecting rod 800, and the water cooling mechanism 400 is disposed on the bottom frame 700. The reasonable installation and the layout of each part are convenient, and the occupied space of the parts is reduced.

Referring to fig. 9, in the present embodiment, the water cooling mechanism 400 further includes a water supply loop, a water tank 450 disposed in the water supply loop, and a water pump motor 460; the water-cooled cylinder 410 is provided in the water supply circuit. The water pump motor 460 realizes the circular transportation of water between the water tank 450 and the water-cooling cylinder 410, and the water can dissipate heat in the circular transportation process, so that the cooling effect can be better realized.

Referring to fig. 9, specifically, the motor 530 is disposed on the top frame 600. The water pump motor 460 is disposed at one side of the top frame 600.

The embodiment of the utility model provides a quick shaping feeding device has following advantage at least: the problems that the feeding of the melt used in the field of rapid forming is not uniform and stable enough and the preparation effect is poor can be effectively avoided.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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

1. A rapid prototyping feeding device which characterized in that:

the device comprises a cylinder body, a piston, a driving mechanism, an electromagnetic valve, a heating element and a metal nozzle;

the cylinder body is provided with a melting cavity, the top of the cylinder body is provided with a discharge hole communicated with the melting cavity, and the bottom of the cylinder body is provided with a liquid discharge hole communicated with the melting cavity;

the piston is in sliding fit with the melting cavity;

the driving mechanism is connected with the piston so as to drive the piston to slide into the cylinder body from the discharge hole or slide out of the cylinder body from the discharge hole;

the heating element is arranged in the melting cavity and is positioned at the liquid discharge port;

the metal nozzle is arranged at the liquid outlet, and the electromagnetic valve is arranged at the metal nozzle.

2. The rapid prototyping feeding device of claim 1, wherein:

the rapid forming feeding device comprises a feeding amount mechanism, and the feeding amount mechanism comprises a pushing piece and an elastic piece;

the pushing piece and the piston are arranged at the driving end of the driving mechanism side by side at intervals, the driving end of the driving mechanism is connected with the pushing piece, and the elastic piece is connected between the pushing piece and the piston, so that the distance between the pushing piece and the piston is adjustable.

3. The rapid prototyping feeding device of claim 2, wherein:

the feed amount mechanism also comprises a plurality of guide rods;

one end of each guide rod is fixed with the piston, and the other end of each guide rod is connected with the pushing piece in a sliding mode.

4. The rapid prototyping feeding device of any one of claims 1-3, wherein:

the rapid forming feeding device also comprises a water cooling mechanism;

the water cooling mechanism comprises a water cooling cylinder body sleeved on the periphery of the cylinder body, the water cooling cylinder body is provided with a water cooling cavity distributed around the periphery of one end of the cylinder body, which is provided with the liquid outlet, and the water cooling cylinder body is provided with a water inlet and a water outlet which are communicated with the water cooling cavity;

the water-cooling cylinder body is far away from the liquid discharge port relative to the heating element.

5. The rapid prototyping feeding device of claim 4, wherein:

the water-cooling cylinder comprises a first sleeve piece and a second sleeve piece;

the first sleeve is provided with a columnar clamping groove which can be matched with one end of the cylinder body, which is provided with the liquid outlet, and the bottom of the clamping groove is provided with a discharge port which can correspond to the liquid outlet;

the second sleeve is sleeved outside the first sleeve and connected with the first sleeve so as to form the water cooling cavity between the first sleeve and the second sleeve.

6. The rapid prototyping feeding device of claim 5, wherein:

the first sleeve comprises a first cylinder body forming the columnar clamping groove and an annular disc connected to the outer periphery of the first cylinder body;

the second sleeve piece comprises a hollow second barrel body, a first connecting disc and a second connecting disc, the first connecting disc and the second connecting disc are connected to the two ends of the second barrel body, the first connecting disc is used for being sleeved on the periphery of the first barrel body and is in sealing connection with the first barrel body, the second connecting disc is used for being attached to the annular disc and is in sealing connection with the annular disc, and the water cooling cavity is formed between the inner wall of the second barrel body and the outer wall of the first barrel body.

7. The rapid prototyping feeding device of claim 4, wherein:

the water cooling mechanism also comprises a water supply loop, a water tank and a water pump motor, wherein the water tank and the water pump motor are arranged on the water supply loop; the water-cooling cylinder body is arranged in the water supply loop.

8. The rapid prototyping feeding device of claim 5, wherein:

the heating element is a silica gel heating sheet which is arranged at the end part of one end of the cylinder body, which is provided with the liquid outlet, and the middle part of the silica gel heating sheet is provided with a hole corresponding to the liquid outlet;

the silica gel heating plate is attached to the bottom of the clamping groove.

9. The rapid prototyping feeding device of any one of claims 1-3, wherein:

the inner diameter of the melting cavity is gradually increased from the end, provided with the discharge port, of the cylinder body to the end, provided with the liquid discharge port, of the cylinder body.

10. The rapid prototyping feeding device of any one of claims 1-3, wherein:

the inner wall of one end of the melting cavity close to the liquid outlet is convex towards the direction close to the liquid outlet to form an arc-shaped wall.