CN216441650U

CN216441650U - Flexible limiting device for movable 3D printing building bin

Info

Publication number: CN216441650U
Application number: CN202123259207.5U
Authority: CN
Inventors: 金晓杰; 施春宇; 张达明
Original assignee: Suzhou Sanfeng Laser Technology Co ltd
Current assignee: Suzhou Sanfeng Laser Technology Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-06
Anticipated expiration: 2031-12-23

Abstract

The invention discloses a flexible limiting device for a movable 3D printing construction bin, which comprises: the building bin comprises a building bin and a base, wherein two fixed guide wheels are arranged at the end part of the building bin; the base tip is equipped with the stop gear of two sets of symmetries, and each stop gear includes: l type base plate, direction connecting rod, direction bracing piece, two spacing guide pulleys, L type base plate includes horizontal bottom plate and vertical direction connecting rod base, and the one end tip of bottom plate is equipped with a through-hole, and direction connecting rod one end is connected with direction connecting rod base top through the round pin axle, and the direction bracing piece is connected to the direction connecting rod, thereby cup joints a supporting spring on the direction bracing piece and its bottom and run through the through-hole of bottom plate and perpendicular can reciprocate, and two spacing guide pulleys are installed side by side in direction connecting rod tip one side, and two spacing guide pulleys all are located the outside of direction bracing piece. This application sets up stop gear at the tip of constructing storehouse and base for construct the storehouse and carry out accurate spacing to it when the installation, guarantee to construct the installation accuracy in storehouse, realize the quick loading and unloading of portable storehouse of constructing.

Description

Flexible limiting device for movable 3D printing building bin

Technical Field

The invention relates to the technical field of 3D printing, in particular to a flexible limiting device for a movable 3D printing construction bin.

Background

The Selective Laser Melting (SLM) technology is one of the most widely used metal additive manufacturing technologies at present, and can almost directly obtain functional parts with any shapes and complete metallurgical bonding by rapidly melting preset laid layers of metal powder by using a precisely focused laser spot. The SLM technology can be used for preparing complex precision parts with high performance, high density, high precision and the like, and is widely applied to preparation of steel, titanium alloy, high-temperature alloy and aluminum alloy parts in the fields of aerospace, medical treatment, automobiles and the like.

At present, in the mainstream metal additive manufacturing technology, after a workpiece is printed, the workpiece needs to be taken out from a forming cabin after being naturally cooled, and then powder cleaning is carried out. The metal parts need to be naturally cooled in an inert gas protection or vacuum environment, the heat dissipation is very slow, and the cooling waiting time is long. The current cleaning mode consumes less time, half a day and one day, and more time, two to three days, which seriously affects the processing efficiency of additive manufacturing. In this case, the actual machining time of the additive manufacturing apparatus is limited, making depreciation very expensive, further increasing the manufacturing cost of the 3D component. The movable construction bin can overcome the defects, and is mainly characterized in that the construction bin can be conveniently separated from the working cavity after the equipment printing is finished, and is transferred to a standard glove box to be cleaned and taken out of a workpiece, so that the design and processing cost of the equipment is greatly saved, and the printing efficiency is improved.

For the movable construction bin, how to realize quick loading and unloading and accurate positioning is very critical.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a flexible limiting device for a movable 3D printing construction bin, which comprises:

the end part of the building bin is provided with two fixed guide wheels;

the base is used for the installation construct the storehouse, the tip of base is equipped with the stop gear of two sets of symmetries, and each stop gear includes: the L-shaped base plate comprises a transverse bottom plate and a vertical guide connecting rod base, the guide connecting rod base is arranged at one end, far away from the base, of the bottom plate, a through hole is formed in the end portion, close to the base, of the bottom plate, one end of the guide connecting rod is connected with the top of the guide connecting rod base through a pin shaft, the position, far away from the guide connecting rod base, of the guide connecting rod is connected with the guide supporting rod, the guide supporting rod is sleeved with a supporting spring, the bottom end of the guide supporting rod penetrates through the through hole of the bottom plate and is perpendicular to the through hole, so that the guide supporting rod and the bottom end of the guide supporting rod can move up and down, the first limit guide wheel and the second limit guide wheel are arranged on one side, far away from the guide connecting rod base, of the guide connecting rod side by side, and the first limit guide wheel and the second limit guide wheel are both positioned on the outer side of the guide supporting rod, the first limit guide wheel and the second limit guide wheel can freely rotate;

when the fixed guide wheel moves to a position between the first limit guide wheel and the second limit guide wheel, the limit of the building bin can be formed.

Optionally, the distance between the periphery of the first limit guide wheel and the periphery driven by the second limit guide wheel is smaller than the outer diameter of the fixed guide wheel.

Optionally, the periphery of the fixed guide wheel is attached to the peripheries of the first limit guide wheel and the second limit guide wheel.

Optionally, a U-shaped support is arranged at the top of the guide support rod and used for clamping the guide connecting rod and fixing the guide connecting rod with the guide connecting rod through a pin shaft.

Optionally, a limiting plate for limiting the supporting spring is arranged below the U-shaped support.

Optionally, the fixed guide wheel has a shaft hole at its center, a fixed shaft penetrates through its center, two ends of the fixed shaft are mounted on the end surface of the building bin through shaft seats, and the fixed guide wheel can rotate around the fixed shaft.

Optionally, the end of the building bin is provided with a transmission mechanism, and the transmission mechanism comprises: the output end of the transmission motor is connected with the transmission shaft and can control the transmission shaft to rotate, the two transmission gears are fixed at two ends of the transmission shaft, and two parallel racks for the transmission gears to move are arranged on two sides of the base, so that the construction bin is moved to a working position.

Optionally, at least one pair of guide wheels is arranged on two sides of the building bin, and two linear guide rails are arranged on the base at the inner sides of the two racks and used for allowing the guide wheels to roll against.

Optionally, the linear guide rail and the rack are both arranged in parallel.

The invention also provides 3D printing equipment, and the flexible limiting device for constructing the warehouse is printed by adopting the movable 3D printing.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the application provides a flexible stop device in storehouse is built in portable 3D printing sets up stop gear at the tip of building storehouse and base for it is accurate spacing to it when the installation of building the storehouse, has guaranteed the installation accuracy of building the storehouse, has realized the fast loading and unloading in portable building storehouse simultaneously, ensures to print work high efficiency operation.

2. The stop gear that this application adopted has simple structure, accurate height of repeated location, loading and unloading characteristics such as convenient, has realized printing the quick high-efficient switching of constructing the storehouse of 3D printing around printing.

Drawings

Fig. 1 is a schematic structural diagram of a flexible limiting device of a movable 3D printing construction bin according to an embodiment of the present application;

FIG. 2 is a right side view of the flexible restraining device of the moveable 3D printing build bin of FIG. 1;

fig. 3 is a schematic structural view of the limiting mechanism shown in fig. 1.

Reference numerals:

constructing a bin-1; a fixed guide wheel-2; a base-3; a bottom plate-4; a guide connecting rod base-5; a guide connecting rod-6;

a guide support rod-7; a first limit guide wheel-8; a second limit guide wheel-9; a fixed shaft-10; a shaft seat-11;

a transmission motor-12; a transmission shaft-13; a transmission gear-14; a rack-15; a guide wheel-16;

a linear guide rail-17; a U-shaped support-18; a support spring-19; a limiting mechanism-20; a limit plate-21.

Detailed Description

The invention is further described with reference to the accompanying drawings and examples:

example 1

Fig. 1 is a schematic structural diagram of a flexible limiting device of a movable 3D printing construction bin 1 according to an embodiment of the present application; fig. 2 is a right side view of the flexible stop device of the movable 3D printing build bin 1 shown in fig. 1. Referring to fig. 1 and 2, the flexible limiting device includes two fixed guide wheels 2 disposed at the end of the building bin 1 and two symmetrical limiting mechanisms 20 disposed at the end of the base 3. The base 3 is used for installing the construction bin 1, namely the construction bin 1 is installed right above the base 3.

Fig. 3 is a schematic structural view of the limiting mechanism 20 shown in fig. 1. Referring to fig. 3, each of the stopper mechanisms 20 includes: the guide device comprises an L-shaped base plate, a guide connecting rod 6, a guide supporting rod 7, a first limit guide wheel 8 and a second limit guide wheel 9, wherein the L-shaped base plate comprises a transverse bottom plate 4 and a vertical guide connecting rod base 5, the guide connecting rod base 5 is arranged at one end, far away from the base 3, of the bottom plate 4, a through hole is formed in the end portion, close to the base 3, of the bottom plate 4, one end of the guide connecting rod 6 is connected with the top of the guide connecting rod base 5 through a pin shaft, the position, far away from the guide connecting rod base 5, of the guide connecting rod 6 is connected with the guide supporting rod 7, a supporting spring 19 is sleeved on the guide supporting rod 7, the bottom end of the supporting spring penetrates through the through hole of the bottom plate 4 and is perpendicular to the through hole, so that the supporting spring can move up and down, the first limit guide wheel 8 and the second limit guide wheel 9 are arranged on one side of the end portion, far away from the guide connecting rod base 5, of the guide connecting rod 6 side by side, the first limit guide wheel 8 and the second limit guide wheel 9 are both positioned at the outer side of the guide support rod 7, and the first limit guide wheel 8 and the second limit guide wheel 9 can freely rotate; the distance between the periphery of the first limit guide wheel 8 and the periphery driven by the second limit guide wheel 9 is smaller than the outer diameter of the fixed guide wheel 2; the periphery of the fixed guide wheel 2 is attached to the peripheries of the first limit guide wheel 8 and the second limit guide wheel 9.

When the construction bin 1 moves to a position close to the limiting mechanism 20, the fixed guide wheel 2 firstly contacts the first limiting guide wheel 8 and generates downward pressure on the first limiting guide wheel 8, the height of the guide connecting rod 6 and the two limiting guide wheels 8 and 9 is also reduced, the guide supporting rod 7 moves downward, and the spring is compressed, so that the fixed guide wheel 2 can easily pass through the first limiting guide wheel 8, after the fixed guide wheel 2 passes through the highest point of the first limiting guide wheel 8, the pressure on the first limiting guide wheel 8 is reduced, the spring can slowly lift back, and meanwhile, the height of the guide connecting rod 6 and the two limiting guide wheels 8 and 9 also rises; when the fixed guide wheel 2 moves to a position between the two limiting guide wheels 8 and 9, the spring is positioned at the highest point at the moment, and the relative positions of the two limiting guide wheels 8 and 9 are higher, so that the fixed guide wheel 2 cannot further pass through the second limiting guide wheel 9 to be positioned at the current position, and the limiting of the construction bin 1 can be formed.

Referring to fig. 3, a U-shaped support 18 is disposed at the top of the guide support rod 7, and is used for clamping the guide link 6 and fixing the guide link 6 with the guide link through a pin. A limiting plate 21 for limiting the supporting spring 19 is arranged below the U-shaped support 18.

Referring to fig. 3, the center of the fixed guide wheel 2 has a shaft hole, the center of the fixed guide wheel penetrates through a fixed shaft 10, two ends of the fixed shaft 10 are mounted on the end surface of the construction bin 1 through shaft seats 11, and the fixed guide wheel 2 can rotate around the fixed shaft 10.

Referring to fig. 1, the end of the construction bin 1 is provided with a transmission mechanism, which comprises: the bin comprises a transmission motor 12, a transmission shaft 13 and two transmission gears 14, wherein the output end of the transmission motor 12 is connected with the transmission shaft 13 and can control the transmission shaft 13 to rotate, the two transmission gears 14 are fixed at two ends of the transmission shaft 13, two parallel racks 15 for the transmission gears 14 to move are arranged at two sides of the base 3, and therefore the building bin 1 is moved to a working position.

Referring to fig. 1, at least one pair of guide wheels 16 are disposed on two sides of the building bin 1, and two linear guide rails 17 are disposed on the base 3 at inner sides of the two racks 15 for the guide wheels 16 to roll against.

Referring to fig. 1, the linear guide 17 is disposed parallel to the rack 15.

The application provides a flexible stop device in storehouse 1 is built in portable 3D printing adopts following step when using:

s1, before printing, the movable construction bin 1 is pushed to the front of the base 3, and the guide wheels 16 on the two sides of the construction bin 1 respectively enter the linear guide rails 17 on the two sides of the construction bin 1 at the same time, so that the left and right installation accuracy of the construction bin 1 is ensured;

s2, simultaneously, the transmission gear 14 contacts the rack 15, the transmission motor 12 is turned on, the transmission gear 14 is driven to roll along the rack 15 through the transmission shaft 13, and the construction bin 1 is driven to move towards the inside of the printer;

s3, after the fixed guide wheel 2 at the back of the constructed cabin 1 passes over the first limit guide wheel 8, the limit sensor electrically connected with the fixed guide wheel sends a signal, the transmission motor 12 is turned off, and the fixed guide wheel 2 is limited between the first limit guide wheel 8 and the second limit guide wheel 9, so that the influence of the gap of the rack 15 on the assembly precision is eliminated, and the cabin entering of the constructed cabin 1 is finished;

s4, when the construction bin 1 is taken out, firstly, the transmission motor 12 is started to enable the fixed guide wheel 2 at the back of the construction bin 1 to move outwards to pass through the first limit guide wheel 8;

s5, driving the transmission motor 12 to drive the transmission gear 14 to do reverse rolling motion along the rack 15 through the transmission shaft 13, and driving the construction bin 1 to move towards the outside of the printer;

and S6, when the transmission gear 14 moves to the outermost end of the rack 15, the transmission is electrically closed, then the constructed bin 1 is removed, and the bin discharging is finished.

Example 2

The embodiment 2 of the invention provides 3D printing equipment, and the flexible limiting device of the movable 3D printing construction bin 1 is adopted. See the description of example 1 and figures 1-3 for details.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a flexible stop device in storehouse is built in portable 3D printing which characterized in that includes:

the end part of the building bin is provided with two fixed guide wheels;

the base is used for the installation construct the storehouse, the tip of base is equipped with the stop gear of two sets of symmetries, and each stop gear includes: the L-shaped base plate comprises a transverse bottom plate and a vertical guide connecting rod base, the guide connecting rod base is arranged at one end, far away from the base, of the bottom plate, a through hole is formed in the end portion, close to the base, of the bottom plate, one end of the guide connecting rod is connected with the top of the guide connecting rod base through a pin shaft, the position, far away from the guide connecting rod base, of the guide connecting rod is connected with the guide supporting rod, the guide supporting rod is sleeved with a supporting spring, the bottom end of the supporting spring penetrates through the through hole of the bottom plate and is perpendicular to the through hole, so that the two limit guide wheels can move up and down, the two limit guide wheels are arranged on one side, far away from the guide connecting rod base, of the guide connecting rod side by side, and both the two limit guide wheels are located on the outer side of the guide supporting rod and can rotate freely;

when the fixed guide wheel moves to a position between the two second limit guide wheels, the limit of the building bin can be formed.

2. The flexible limiting device for the movable 3D printing building bin according to claim 1, wherein the distance between the peripheries of the two limiting guide wheels is smaller than the outer diameter of the fixed guide wheel.

3. The flexible limiting device for the movable 3D printing building bin according to claim 1, wherein the outer peripheries of the fixed guide wheels are fitted with the outer peripheries of the two limiting guide wheels.

4. The flexible limiting device for the movable 3D printing construction bin according to claim 1, wherein a U-shaped support is arranged at the top of the guide supporting rod and used for clamping the guide connecting rod and being fixed with the guide connecting rod through a pin shaft.

5. The flexible limiting device for the movable 3D printing construction bin according to claim 4, wherein a limiting plate for limiting the supporting spring is arranged below the U-shaped support.

6. The flexible limiting device for the movable 3D printing building bin is characterized in that the center of the fixed guide wheel is provided with a shaft hole, the center of the shaft hole penetrates through a fixed shaft, two ends of the fixed shaft are mounted on the end face of the building bin through shaft seats, and the fixed guide wheel can rotate around the fixed shaft.

7. The flexible limiting device for the movable 3D printing construction bin according to claim 1, wherein the end of the construction bin is provided with a transmission mechanism, and the transmission mechanism comprises: the output end of the transmission motor is connected with the transmission shaft and can control the transmission shaft to rotate, the two transmission gears are fixed at two ends of the transmission shaft, and two parallel racks for the transmission gears to move are arranged on two sides of the base, so that the construction bin is moved to a working position.

8. The flexible limiting device for the movable 3D printing construction bin is characterized in that at least one pair of guide wheels is arranged on two sides of the construction bin, and two linear guide rails are arranged on the base at the inner sides of the two racks and used for the guide wheels to roll along.

9. The flexible limiting device for the movable 3D printing building bin according to claim 8, wherein the linear guide rail and the rack are arranged in parallel.

10. 3D printing equipment, characterized in that a flexible stop device of a movable 3D printing construction chamber according to any of claims 1-9 is used.