CN209756090U - A deformable shower nozzle for 3D prints - Google Patents

Abstract

The utility model discloses a variable nozzle for 3D printing, relating to the technical field of 3D printing, which comprises a feed pipe communicated with a storage box storing raw materials, the feeding pipe is vertically arranged downwards, the lower end of the feeding pipe is sequentially connected with a communicating pipe and a discharging pipe used for spraying raw materials, a plurality of material blocking pieces are obliquely and downwards hinged in the communicating pipe, the material blocking pieces are circumferentially arranged, an annular ferrule is also arranged in the feeding pipe, the lower end of the ferrule is hinged with a plurality of connecting rods which are in one-to-one correspondence with the material blocking sheets, one end of each connecting rod, which is far away from the ferrule, is hinged with the middle part of the corresponding material blocking sheet, two strip-shaped sliding grooves are symmetrically and vertically arranged in the feeding pipe, two sliding blocks matched with the strip-shaped sliding grooves are respectively arranged on two sides of the ferrule, and a lifting mechanism for driving the ferrule to lift is further arranged in the feeding pipe; the utility model has the advantages of simple structure and convenient adjustment of the quantity of the raw materials sprayed out by the spray head in unit time.

Description

A deformable shower nozzle for 3D prints

Technical Field

The utility model relates to a 3D prints technical field, more specifically relates to a but, modification shower nozzle for 3D prints.

Background

Fuse Deposition Modeling (FDM) is currently the most rapidly developing and promising fast modeling technique for 3D printing. The FDM forming process is one forming process with laser as forming energy source and fuse depositing and forming mechanism including three-shaft moving mechanism, wire feeder, printing nozzle and control mechanism to heat and melt various wires, and includes feeding the wire feeding mechanism to the nozzle, extruding molten wire material from the nozzle, coating the molten wire material onto the base of the work piece based on the cross section profile information the computer provides, cooling and solidifying, raising the nozzle one layer height after one layer, coating the next layer height, and forming three-dimensional product.

However, the cross section of the inner diameter of the extrusion nozzle of the existing printing nozzle is only in a fixed circle shape, and the volume of the jet of the nozzle in unit time is fixed. Due to the fact that the cross section area of the inner diameter of the nozzle is not adjustable, the printing precision and speed of the 3D printer cannot be controlled, however, different printing precision and speed are needed for different printing purposes and different printing areas, and even if the same model is used, the inside and the edge of the model have different precision requirements.

Therefore, there is a need to design a variable nozzle for 3D printing, which facilitates adjusting the nozzle volume according to different printing purposes and printing areas, and adapts to different printing accuracy and speed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem that current 3D prints the shower nozzle and can not adjust the flow of blowout raw materials, the utility model provides a but the modification shower nozzle for 3D prints.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme: a variable nozzle for 3D printing comprises a feed pipe communicated with a storage box for storing raw materials, wherein the feed pipe is vertically arranged downwards, the lower end of the feed pipe is sequentially connected with a communicating pipe and a discharge pipe for spraying the raw materials, the feed pipe and the communicating pipe can be connected in a welding, bonding or threaded connection mode, the communicating pipe and the discharge pipe can be connected in a welding, bonding or threaded connection mode, a plurality of material blocking pieces are obliquely and downwards hinged in the communicating pipe, the material blocking pieces are circumferentially arranged, an annular ferrule is further arranged in the feed pipe and is arranged on the inner side of the feed pipe in a welding or bonding mode, the width of the ferrule is as small as possible relative to the pipe diameter of the feed pipe, the raw materials can conveniently pass through the ferrule, the raw materials are prevented from being blocked by the ferrule, and the ratio of the width of the ferrule to the pipe, the lower end of the ferrule is hinged with a plurality of connecting rods which are in one-to-one correspondence with the material blocking sheets, one end of each connecting rod, which is far away from the ferrule, is hinged with the middle part of the corresponding material blocking sheet, two strip-shaped sliding grooves are also symmetrically and vertically arranged in the feeding pipe, two sliding blocks matched with the strip-shaped sliding grooves are respectively arranged at two sides of the ferrule, the feeding pipe is also internally provided with a lifting mechanism for driving the ferrule to lift, specifically, the lifting mechanism drives the ferrule to lift along the strip-shaped chute, the ferrule drives the material blocking sheet to rotate around a hinge joint of the material blocking sheet and the communicating pipe through the connecting rod, when the material blocking sheet rotates downwards, the flow of raw materials passing through the communicating pipe is increased, thereby increasing the amount of raw materials sprayed out of the discharge pipe in unit time, reducing the flow of the raw materials passing through the communicating pipe when the material blocking piece rotates upwards, therefore, the amount of the raw materials sprayed out of the discharging pipe in unit time is reduced, and the amount of the raw materials sprayed out of the discharging pipe in unit time is adjusted by adjusting the material blocking piece.

Further, elevating system is including the symmetry vertically establishing two motors in the feed pipe, and the output shaft of every motor has the screw rod, and every screw rod and lasso threaded connection just run through the lasso, and is concrete, and the motor is rotatory, and the screw rod drives the lasso and slides along the bar spout.

Further, communicating pipe inboard and inlet pipe are connected through the screw thread, and is concrete, when elevating system can't the during operation, can manually rotate communicating pipe, when communicating pipe changes for the position relation of inlet pipe, and the fender piece is rotatory round the pin joint of fender piece and communicating pipe under the effect of connecting rod, at the in-process of keeping off the upward rotation of fender piece or down rotation, realizes the regulation to what of shower nozzle unit interval blowout raw materials.

Furthermore, a handle is arranged on the communicating pipe or the discharging pipe, the communicating pipe can be conveniently rotated manually through the handle, and operation is convenient.

The utility model has the advantages as follows:

1. The utility model discloses simple structure, it goes up and down along the bar spout to drive the lasso through elevating system, the lasso drives through the connecting rod and keeps off the material piece and rotate round the pin joint of keeping off material piece and communicating pipe, when keeping off the material piece and rotate down, the flow of raw materials through communicating pipe increases, thereby make discharging pipe unit interval spun raw materials increase, when keeping off the material piece and rotate up, the flow of raw materials through communicating pipe reduces, thereby make discharging pipe unit interval spun raw materials reduce, through adjusting the fender material piece, realize the regulation of how much of discharging pipe unit interval spun raw materials;

2. The lifting mechanism of the utility model comprises a motor, the motor rotates, the motor drives a ferrule to slide along a bar-shaped chute through a screw rod, the ferrule drives a connecting rod to lift, and the connecting rod drives a material blocking piece to rotate around a hinge joint of the material blocking piece and a communicating pipe;

3. the inner side of the communicating pipe is connected with the inlet pipe through the threads, so that when the lifting mechanism cannot work, the connecting pipe can be rotated, the material blocking piece can rotate around a hinge point of the material blocking piece and the communicating pipe under the action of the connecting rod, and then the amount of the raw materials sprayed out by the spray head in unit time can be adjusted through different positions of the material blocking piece;

4. The utility model discloses a set up the handle and be convenient for manual rotation communicating pipe, make things convenient for the staff operation.

Drawings

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure of FIG. 1;

Fig. 3 is a schematic structural view of the baffle plate of the present invention;

FIG. 4 is a schematic structural view of the connecting rod of the present invention;

Reference numerals: 1-discharge pipe, 2-communicating pipe, 3-material blocking piece, 4-connecting rod, 5-feed pipe, 6-ferrule, 7-handle, 8-motor, 9-screw, 10-bar chute and 11-slide block.

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 efforts 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. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

in the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

example 1

As shown in fig. 1 to 4, the present embodiment provides a variable nozzle for 3D printing, including a feeding tube 5 communicated with a storage tank storing raw materials, the feeding tube 5 is vertically disposed downward, a communicating tube 2 and a discharging tube 1 for spraying raw materials are sequentially connected to a lower end of the feeding tube 5, the feeding tube 5 is connected to the communicating tube 2 by welding, the communicating tube 2 is connected to the discharging tube 1 by welding, a plurality of blocking pieces 3 are obliquely hinged downward in the communicating tube 2, the blocking pieces 3 are circumferentially disposed, an annular collar 6 is further disposed in the feeding tube 5, the collar 6 is disposed inside the feeding tube 5 by welding, a ratio of a width of the collar 6 to a diameter of the feeding tube 5 is 1:100, the collar 6 is prevented from blocking raw materials, a plurality of connecting rods 4 corresponding to the blocking pieces 3 one to one are hinged to a lower end of the collar 6, one end of each connecting rod 4 far away from the ferrule 6 is hinged with the middle part of the corresponding material blocking sheet 3, two strip-shaped sliding grooves 10 are also symmetrically and vertically arranged in the feeding pipe 5, the two sides of the ferrule 6 are respectively provided with a slide block 11 matched with the strip-shaped chute 10, the feed pipe 5 is also internally provided with a lifting mechanism for driving the ferrule 6 to lift, specifically, the lifting mechanism drives the ferrule 6 to lift along the strip-shaped chute 10, the ferrule 6 drives the material blocking piece 3 to rotate around a hinge point of the material blocking piece 3 and the communicating pipe 2 through the connecting rod 4, when the material blocking piece 3 rotates downwards, the flow of raw materials passing through the communicating pipe 2 is increased, thereby increasing the amount of raw materials sprayed out of the discharge pipe 1 in unit time, reducing the flow of the raw materials passing through the communicating pipe 2 when the material blocking piece 3 rotates upwards, thereby reducing the amount of the raw material sprayed by the discharge pipe 1 per unit time, and realizing the adjustment of the amount of the raw material sprayed by the discharge pipe 1 per unit time by adjusting the baffle piece 3.

Example 2

As shown in fig. 2, this embodiment is further improved on the basis of embodiment 1, specifically, the lifting mechanism includes two motors 8 symmetrically and vertically disposed in the feeding pipe 5, an output shaft of each motor 8 is connected with a screw 9, each screw 9 is in threaded connection with the ferrule 6 and penetrates through the ferrule 6, specifically, the motor 8 rotates, and the screw 9 drives the ferrule 6 to slide along the strip-shaped chute 10.

Example 3

As shown in fig. 1, this embodiment is further improved on the basis of embodiment 1, specifically, the inner side of the communicating pipe 2 is connected to the feeding pipe 5 through a thread, specifically, when the lifting mechanism cannot work, the communicating pipe 2 can be manually rotated, when the positional relationship of the communicating pipe 2 relative to the feeding pipe 5 changes, the blocking piece 3 rotates around the hinge point of the blocking piece 3 and the communicating pipe 2 under the action of the connecting rod 4, and in the process of upward rotation or downward rotation of the blocking piece 3, the adjustment of the amount of the raw material sprayed out by the spraying head per unit time is realized.

example 4

As shown in fig. 1, this embodiment is further improved on the basis of embodiment 3, specifically, a handle 7 is disposed on the communicating pipe 2 or the discharging pipe 1, and the handle 7 is disposed to facilitate manual rotation of the communicating pipe 2, thereby facilitating operation.

Claims (4)

1. The variable nozzle for 3D printing comprises a feeding pipe (5) communicated with a storage box for storing raw materials, and is characterized in that the feeding pipe (5) is vertically arranged downwards, the lower end of the feeding pipe (5) is sequentially connected with a communicating pipe (2) and a discharging pipe (1) for spraying the raw materials, a plurality of material blocking pieces (3) are hinged in the communicating pipe (2) in an inclined downward manner, the material blocking pieces (3) are circumferentially arranged, an annular ferrule (6) is further arranged in the feeding pipe (5), a plurality of connecting rods (4) corresponding to the material blocking pieces (3) one by one are hinged at the lower end of the ferrule (6), one end of each connecting rod (4) far away from the ferrule (6) is hinged with the middle part of the corresponding material blocking piece (3), two strip-shaped chutes (10) are further symmetrically and vertically arranged in the feeding pipe (5), two sliding blocks (11) matched with the strip-shaped chutes (10) are respectively arranged on two sides of the, and a lifting mechanism for driving the ferrule (6) to lift is further arranged in the feeding pipe (5).

2. A variable nozzle for 3D printing according to claim 1, wherein the lifting mechanism comprises two motors (8) symmetrically vertically arranged in the feed pipe (5), a screw (9) is connected to the output shaft of each motor (8), and each screw (9) is in threaded connection with the collar (6) and penetrates through the collar (6).

3. Variable nozzle for 3D printing according to claim 2, characterized in that the inside of the communicating tube (2) and the feeding tube (5) are connected by a thread.

4. variable nozzle for 3D printing according to claim 3, characterized in that a handle (7) is provided on the feed-through tube (2) or the discharge tube (1).