CN215589952U

CN215589952U - Disconnected material detection module suitable for FDM 3D printer

Info

Publication number: CN215589952U
Application number: CN202121960974.6U
Authority: CN
Inventors: 郭继杰; 陈文龙
Original assignee: Shenzhen Jiexinhua Technology Co ltd
Current assignee: Shenzhen Jiexinhua Technology Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-21
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a material breakage detection module suitable for an FDM 3D printer, and relates to the technical field of material breakage detection of FDM 3D printers, wherein the material breakage detection module comprises an encoder module, a mounting bracket and a shell, wherein the mounting bracket is used for being fixed with the FDM 3D printer; the shell is provided with a mounting groove matched with the shape of the encoder module, and the encoder module is detachably fixed in the mounting groove; the shell is provided with a notch for communicating the mounting groove with an outer area of the shell, and a communication interface end of the encoder module is arranged in the notch and is used for being in communication connection with a main board of the FDM 3D printer; the shell is provided with the through-hole that is used for passing the consumptive material, and this through-hole passes through the mounting groove, encoder module's friction pulley be used for with consumptive material rolling contact. When the automatic material cutting machine is used, no matter where the material cutting position of the consumable material is, the material cutting condition can be detected, and then the automatic material cutting machine can be stopped in time; each structure is rationally distributed, and the condition of missing judgment can not appear.

Description

Disconnected material detection module suitable for FDM 3D printer

Technical Field

The utility model relates to the technical field of material breakage detection of FDM (frequency division multiplexing) 3D printers, in particular to a material breakage detection module suitable for an FDM 3D printer.

Background

Commonly used consumables of the FDM 3D printer, such as PLA, ABS, TPU and the like, are all consumables made of plastic materials, and the consumables are dragged back and forth in the printing process, so that the material breaking condition is easy to occur; if a large model is printed, the printing time is very long, and the material breakage detection module is particularly important when the material breakage occurs and is unattended.

The main function of the material breakage detection module is that when consumable material breakage occurs in the printing process, a signal is given to the printer, the printer can immediately pause printing, and a user is prompted to reconnect the consumable material to continue printing. Avoiding unnecessary waste and ensuring the molding of the model.

The existing principle of the material breakage detection module in the market is shown in figure 1: consumable 2 is earlier through disconnected material detection module 3, communicates afterwards to extrude head 5, and disconnected material detects whether to use the inside consumable that has of travel switch detection module, when not having the consumable in disconnected material detection module, the travel switch shell fragment can't trigger, sends the signal this moment and gives the printer, pauses and prints. However, the material breakage detection module has a great disadvantage that when the material breakage position of the consumable material is between the extrusion head and the material breakage detection module (such as the material breakage position 4 shown in fig. 1), the consumable material still exists in the material breakage detection module, a pause signal is not sent to the printer, and the position of the extrusion head is not connected with a new consumable material, so that printing failure is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a material breakage detection module suitable for an FDM 3D printer, which can alleviate the problems.

In order to alleviate the above problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a material breakage detection module suitable for an FDM 3D printer, which comprises an encoder module, a mounting bracket and a shell, wherein the mounting bracket is used for being fixed with the FDM 3D printer;

the shell is provided with a mounting groove matched with the shape of the encoder module, and the encoder module is detachably fixed in the mounting groove; the shell is provided with a notch for communicating the mounting groove with an outer area of the shell, and a communication interface end of the encoder module is arranged in the notch and is used for being in communication connection with a main board of the FDM 3D printer;

the shell is provided with the through-hole that is used for passing the consumptive material, and this through-hole passes through the mounting groove, encoder module's friction pulley be used for with consumptive material rolling contact.

Compared with the prior art, the utility model has the beneficial effects that: no matter where the material breaking position of the consumable material is, the material breaking condition can be detected, and then the machine can be stopped in time; each structure is rationally distributed, and the condition of missing judgment can not appear.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 diagram of consumable distribution and material breakage positions in the printing process of an FDM 3D printer;

FIG. 2 is a schematic view of a first perspective of the material break detection module of the present invention;

FIG. 3 is a schematic view from a second perspective of the material break detection module of the present invention with the mounting bracket omitted;

in the figure: 1-consumable coil, 2-consumable, 3-material breakage detection module, 4-material breakage position, 5-extrusion head, 6-shell, 7-installation groove, 8-consumable movement detection area, 9-gap, 10-fixing hole, 11-communication interface end, 12-friction wheel, 13-encoder module, 14-through hole and 15-installation support.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention 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 figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, 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 description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 2 and 3, the utility model provides a material breakage detection module suitable for an FDM 3D printer, where the material breakage detection module 3 includes an encoder module 13, a mounting bracket 15 for fixing with the FDM 3D printer, and a housing 6 detachably fixed to the mounting bracket 15;

the shell 6 is provided with a mounting groove 7 matched with the shape of the encoder module 13, and the encoder module 13 is detachably fixed in the mounting groove 7; the shell 6 is provided with a notch 9 for communicating the mounting groove 7 with the outer area of the shell 6, and a communication interface end 11 of an encoder module 13 is arranged in the notch 9 and is used for being in communication connection with a main board of the FDM 3D printer;

the casing 6 is provided with a through hole 14 for passing the consumable, the through hole 14 passing through the mounting groove 7, and the friction wheel 12 of the encoder module 13 for rolling contact with the consumable.

When the material breakage detection module 3 is used, the material breakage detection module 3 is installed at the position shown in fig. 1, namely, the installation support 15 is fixed on a transverse profile of the FDM 3D printer, a user can select the specific position by himself, consumables penetrate through the through holes 14, the friction wheels 12 of the encoder module 13 are made to be in contact with the consumables, the consumables are pressed, and the communication interface end 11 of the encoder module 13 is in communication connection with a mainboard of the FDM 3D printer.

In the printing process of the FDM 3D printer, the following two conditions exist:

in the first case: in the feeding process of the consumable 2, the friction wheel 12 is driven to rotate, the encoder module 13 detects a motion signal of the consumable 2 and transmits the motion signal of the consumable 2 to the 3D printer mainboard, and the 3D printer mainboard can judge that the consumable 2 is not broken according to the signal and then continues to normally feed the consumable 2;

in the second case: after the condition of expect absolutely or exhaust appears in consumptive material 2, consequently encoder module 13's friction pulley 12 no longer rotates, and encoder module 13 detects this kind of state of consumptive material 2, and 3D printer mainboard just can judge that the condition of expecting absolutely appears in consumptive material 2 according to this signal, then control stop to feed consumptive material 2.

If the material breaking position 4 is between the extrusion head 5 and the material breaking detection module 3 shown in fig. 1, the consumable part 2 is still in the material breaking detection module 3, and the consumable part 2 is not pulled any more, so the friction wheel 12 is not driven to rotate.

In the utility model, the encoder module 13 can be a magnetic encoder, a round magnet is arranged on the shaft of the friction wheel 12, when the friction wheel 12 rotates, the magnetic resistance device generates induced magnetic field change or the Hall effect device generates induced voltage change, and the induced voltage change is processed by a regulating circuit on the encoder module 13 to generate a required output signal.

The FDM 3D printer motherboard generally has a port capable of connecting with the communication interface terminal 11 of the encoder module 13, and then obtains the signal from the encoder module 13, and the FDM 3D printer motherboard may be a SV01 mute motherboard, a SV03 motherboard, an end series mute motherboard, or the like.

In the utility model, a communication interface end 11 of an encoder module 13 is a 3PIN port, an FDM 3D printer mainboard provides 5V voltage, and 1 signal line is connected with the encoder module 13; whether the encoder module 13 processes the information that the friction wheel 12 rotates or not is provided for high and low level signals to be fed back to the FDM 3D printer mainboard, and the mode is consistent with the mode provided by the travel switch material breakage detection module in the prior art, so that ports on the FDM 3D printer mainboard can be directly used without modification.

In an alternative embodiment of the present invention, the mounting bracket 15 is a bent sheet metal part having two lugs, both of which are provided with bracket mounting holes for fixing with the FDM 3D printer.

In an alternative embodiment of the utility model, the inner area of the housing 6 is provided with several stiffening ribs to improve the structural strength.

In an alternative embodiment of the present invention, a groove angle of the mounting groove 7 as the consumable movement detection area 8 is processed into a semicircular structure, and the friction wheel 12 is matched with the consumable movement detection area 8.

In an alternative embodiment of the utility model, the encoder module 13 is detachably fixed to the mounting groove 7 by means of two screws.

In an alternative embodiment of the utility model, the housing 6 is provided with four fixing holes 10 for fixing with the mounting bracket 15.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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. The broken material detection module is suitable for the FDM 3D printer and is characterized by comprising an encoder module, a mounting bracket and a shell, wherein the mounting bracket is used for being fixed with the FDM 3D printer, and the shell is detachably fixed on the mounting bracket;

2. The material breakage detection module according to claim 1, wherein the mounting bracket is a bent sheet metal part with two support lugs, and both support lugs are provided with bracket mounting holes for fixing with the FDM 3D printer.

3. The material break detection module of claim 1, wherein an interior region of the housing is provided with a plurality of reinforcing ribs.

4. The material breakage detection module according to claim 1, wherein a groove angle of the mounting groove is processed into a semicircular structure as a consumable material movement detection area, and the friction wheel is located in the consumable material movement detection area.

5. The material break detection module of claim 1, wherein the encoder module is detachably fixed to the mounting groove by two screws.

6. The material breakage detection module according to claim 1, wherein the housing is provided with four fixing holes for fixing with the mounting bracket.