CN112743847B - A spatula for separating printed models of a 3D printer - Google Patents

Abstract

The invention discloses a scraper knife for separating a printing model of a 3D printer, which comprises a scraper knife and a knife handle, wherein a motor is arranged at the front end of the knife handle, a power output end of the motor extending into an inner cavity of the knife handle is connected with a telescopic rod, one end of the telescopic rod, which is far away from the knife handle, is fixedly connected with the scraper knife, sliding grooves are formed in the left side and the right side of the top of the scraper knife, sliding blocks are slidably connected in the inner cavities of the two sliding grooves, a limiting hole is formed between the left side wall and the right side wall of the sliding block in a penetrating manner, a rotating rod is rotatably connected to the top of the side wall of the sliding block, a gear is connected to one end of the rotating rod extending into the inner cavity of the sliding block, an extrusion rod is slidably connected to the limiting hole, and a guide groove is formed in the left side wall of the limiting seat.

Description

A spatula for separating printed models of a 3D printer

technical field

The invention relates to the technical field of 3D printing, in particular to a spatula for separating printed models of a 3D printer.

Background technique

3D solid printing sintering technology can be subdivided into thermal laser solidification 3D printing technology (SLA), molten material 3D printing technology (FDM), selective heating laser material sintering printing technology (sls), etc. Optical printing molding technology is widely used in various fields because it can accurately and automatically control the ejection and quality of various ejected molding materials, control the thickness of the molding layer and the accuracy of molding, and has great development potential and broad application prospects. Especially for the 3D printing of the portrait model, after the 3D printing of the portrait model is completed, it is necessary to use a spatula to separate the portrait model.

At present, the existing shovel has a relatively large impact force on the bottom of the model during use, which may easily cause tearing of the bottom of the model. At the same time, it is not easy for the shovel to be parallel to the bottom of the model, and the separation speed is relatively slow.

Contents of the invention

The object of the present invention is to provide a spatula for separating printed models of a 3D printer, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a spatula for separating printed models of a 3D printer, comprising a spatula and a handle, the front end of the handle is provided with a motor, and the motor extends into the inner cavity of the handle The power output end is connected with a telescopic rod, and the end of the telescopic rod far away from the knife handle is fixedly connected to the spatula. There are sliding grooves on the left and right sides of the top of the spatula, and the inner cavities of the two sliding grooves are slidingly connected. There is a sliding block, and a limited hole is opened between the left and right side walls of the sliding block. The top of the side wall of the sliding block is rotatably connected with a rotating rod, and the end of the rotating rod extending into the inner cavity of the sliding block is connected with a gear. An extruding rod is slidably connected to the limiting hole, and a tooth chain is arranged on the top of the extruding rod, and the tooth chain is meshed with the gear, and the end of the extruding rod far away from the sliding block is slidably connected to the limiting seat. The left side wall of the limit seat is provided with a guide groove, and a limit spring is fixedly connected between the guide groove and the extruding rod, and the end of the limit seat away from the extruding rod is rollingly connected with a roller.

Preferably, a leveler is provided on the left side wall of the shovel, which can ensure that the shovel remains parallel to the bottom of the model, reducing the possibility of damage to the bottom of the model.

Preferably, the inner cavities of the two sliding grooves are fixedly connected with sliding rods, and the sliding rods are slidably connected. One end of the buffer spring is affixed to the side wall of the sliding groove, and the other end of the buffer spring is affixed to the side wall of the sliding block, so that the sliding block can be guaranteed to move in a straight line, and the elastic deformation of the buffer spring can also be used to buffer the sliding block The received impact force, thereby reducing the lateral impact force received by the portrait model during the separation process, plays a protective role for the portrait model.

Preferably, the top and bottom of the inner cavity of the guide groove are provided with limiting grooves, and the upper and lower sides of the top and bottom of the extrusion rod are fixedly connected with limiting blocks that match the limiting grooves, so that the extrusion The rod acts as a limit guide, ensuring that the limit seat moves along a straight line, thereby reducing the possibility of the bottom of the portrait model tilting.

Preferably, the length of the limiting groove is shorter than the length of the guiding groove, which can reduce the possibility of detachment between the extruding rod and the limiting seat.

Compared with prior art, the beneficial effect of the present invention is:

1. A shovel for separating printed models of a 3D printer of the present invention forms a limiting structure through a sliding block, an extrusion rod, a rotating rod and a limiting seat, and the rotating rod drives the extrusion rod and the limiting seat to approach and move away from each other. In this way, the limit and fixation of the portrait model can be realized, and the elastic deformation of the limit spring in the limit seat can be used to squeeze and limit the different positions of the portrait model, which reduces the possibility of the portrait model shaking during the separation process, and can also offset the portrait model. Under the impact of the spatula, the possibility of damage to the bottom of the portrait model due to excessive impact is reduced, and the motor belt drives the telescopic rod to move, so that the spatula can be quickly inserted into the bottom of the portrait model to achieve the purpose of quick separation.

2. The shovel for separating the printed model of a 3D printer of the present invention is placed horizontally through a leveler, which ensures that the shovel is kept parallel to the bottom of the model, reduces the possibility of damage to the bottom of the model, and can also use the buffer The elastic deformation of the spring buffers the impact force received by the sliding block, thereby reducing the lateral impact force received by the portrait model during the separation process and protecting the portrait model.

Description of drawings

Fig. 1 is a sectional front view of the overall structure of the device of the present invention;

Fig. 2 is a structural representation of the blade of the present invention;

Fig. 3 is a sectional side view of the blade of the present invention;

Fig. 4 is a structural schematic diagram of a position limiting seat of the present invention;

Fig. 5 is a schematic diagram of the connection structure between the extruding rod and the sliding block of the present invention;

In the figure, 1-blade; 2-knife handle; 3-telescopic rod; 4-motor; 5-sliding groove; 6-sliding block; 7-sliding rod; 8-extrusion rod; Rotating rod; 11-gear; 12-limit seat; 13-guide groove; 14-limit spring; 15-roller; 16-buffer spring; 17-limit hole; 18-leveler; 19-limit groove; 20-limit block.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-5, an embodiment provided by the present invention.

Embodiment one

A spatula for separating printed models of a 3D printer, comprising a spatula 1 and a handle 2, a leveler 18 is provided on the left side wall of the spatula 1, which can ensure that the spatula 1 remains parallel to the bottom of the model, reducing the The bottom of the model may be damaged. The front end of the handle 2 is equipped with a motor 4. The power output end of the motor 4 extending into the inner cavity of the handle 2 is connected to a telescopic rod 3. Fixed connection, the left and right sides of the top of the blade 1 are provided with sliding grooves 5, the inner cavities of the two sliding grooves 5 are slidably connected with sliding blocks 6, and a limiting hole 17 is opened between the left and right side walls of the sliding block 6, The top of the side wall of the sliding block 6 is rotatably connected with a rotating rod 10, and one end of the rotating rod 10 protruding into the inner chamber of the sliding block 6 is connected with a gear 11, and the limiting hole 17 is slidingly connected with an extruding rod 8, and the top of the extruding rod 8 A tooth chain 9 is provided, and the tooth chain 9 is meshed with the gear 11. The end of the extrusion rod 8 away from the sliding block 6 is slidably connected to the limit seat 12. The left side wall of the limit seat 12 is provided with a guide groove 13, and the guide groove 13 and the extrusion rod 8 are fixedly connected with a limit spring 14, and the end of the limit seat 12 away from the extrusion rod 8 is rollingly connected with a roller 15.

Embodiment two

The difference between the second embodiment and the first embodiment is that the inner cavities of the two sliding grooves 5 are fixedly connected with the sliding rod 7, and the sliding rods 7 are slidably connected, and the sliding block 6 is close to the sliding rod 7 on the edge side of the blade 1. A buffer spring 16 is sleeved on the top, one end of the buffer spring 16 is affixed to the side wall of the sliding groove 5, and the other end of the buffer spring 16 is affixed to the side wall of the sliding block 6, so that the sliding block 6 can be guaranteed to move along a straight line At the same time, the elastic deformation of the buffer spring 16 can also be used to buffer the impact force received by the sliding block 6, thereby reducing the lateral impact force received by the portrait model during the separation process, and protecting the portrait model.

Embodiment three

The difference between the third embodiment and the second embodiment is that the top and bottom of the inner cavity of the guide groove 13 are provided with limiting grooves 19, and the upper and lower sides of the top of the extruding rod 8 are fixedly connected with the limiting grooves 19. Limiting block 20 can play the role of limiting and guiding the extruding rod 8 in this way, ensuring that the limiting seat 12 moves along a straight line, thereby reducing the possibility of inclination at the bottom of the portrait model, and the length of the limiting groove 19 is shorter than that of the guide groove 13 length, which can reduce the possibility of detachment between the extrusion rod 8 and the limit seat 12.

Working principle: After the portrait model is cooled on the platform of the 3D printer for a period of time, first align the corner of the spatula 1 with the corner of the portrait model, and slowly insert the spatula 1 in parallel. 1 Pull out, use the knife surface of the shovel 1 to shovel in parallel along the side of the previously shoveled gap, manually rotate the rotating rod 10, the rotating rod 10 drives the gear 11 to rotate, the gear 11 is meshed with the tooth chain 9, and then The rotation of the gear 11 drives the tooth chain 9 to move, and the movement trend of the tooth chain 9 and the extrusion rod 8 is the same, and the tooth chain 9 drives the extrusion rod 8 to slide along the limit hole 17 on the sliding block 6, thereby driving the two Two limit seats 12 are close to each other, and the limit spring 14 in the limit seat 12 closely fits the roller 15 on the surface of the portrait model, and the portrait model is limited and fixed, and the leveler 18 is used to observe whether the blade 1 is level enough Place it so that the spatula 1 is kept parallel to the bottom of the model, reducing the possibility of damage to the bottom of the model. After the installation is completed, start the motor 4 on the handle 2, and the motor 4 drives the telescopic rod 3 to move, and the telescopic rod 3 drives the spatula 1 Fast movement, during the movement of the blade 1, the sliding block 6 moves backward along the sliding rod 7 in the sliding groove 5 due to inertia, and the buffer spring 16 has a pulling force on the sliding block 6 to offset part of the inertia. force, thereby reducing the possibility of the portrait model shaking, and at the same time, the sliding block 6 will also move with the movement of the blade 1, and the roller 15 will move along the surface of the portrait model to limit the different positions of the portrait model. During the movement of the roller 15, the limit spring 14 in the limit seat 12 will be elastically deformed, and can be automatically adjusted according to the different shapes of different positions of the portrait model, so as to keep the limit fixed state of the portrait model until the portrait model is completely separated from the printing platform. The limiting groove 19 is installed in cooperation with the limiting block 20, which can play a role of limiting and guiding the extrusion rod 8, ensuring that the limiting seat 12 moves along a straight line, thereby reducing the possibility of the bottom of the portrait model tilting.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (4)

1. a kind of 3D printer printing model separates spatula, comprises spatula (1) and handle of a knife (2), it is characterized in that: the front end of described handle of a knife (2) is provided with motor (4), described motor ( 4) The power output end extending into the inner cavity of the handle (2) is connected with a telescopic rod (3), and the end of the telescopic rod (3) away from the handle (2) is fixedly connected to the shovel (1), and the shovel The left and right sides of the top of the knife (1) are provided with sliding grooves (5), and the inner cavities of the two sliding grooves (5) are all slidably connected with sliding blocks (6), and the left and right sides of the sliding blocks (6) are Limiting holes (17) are opened between the walls, and the top of the side wall of the sliding block (6) is rotatably connected with a rotating rod (10), and the rotating rod (10) extends into one end of the inner cavity of the sliding block (6) A gear (11) is connected, and an extruding rod (8) is slidably connected in the limiting hole (17), and a tooth chain (9) is arranged on the top of the extruding rod (8), and the tooth chain (9) Engaged with the gear (11), the end of the extruding rod (8) away from the sliding block (6) is slidably connected to the limit seat (12), and the left side wall of the limit seat (12) is provided with a guide groove (13), the limit spring (14) is fixedly connected between the guide groove (13) and the extrusion rod (8), and the end of the limit seat (12) away from the extrusion rod (8) is rollingly connected with a roller (15); The inner cavities of the two sliding grooves (5) are fixedly connected with sliding rods (7), and the sliding rods (7) are slidably connected, and the sliding block (6) is close to the side of the edge of the blade (1). A buffer spring (16) is sleeved on the rod (7), one end of the buffer spring (16) is affixed to the side wall of the sliding groove (5), and the other end of the buffer spring (16) is connected to the sliding block ( 6) The side walls are fixedly connected. 2. A shovel for separating printed models of a 3D printer according to claim 1, characterized in that: the left side wall of the shovel (1) is provided with a leveler (18). 3. A spatula for separating a 3D printer print model according to claim 1, characterized in that: the top and bottom of the inner cavity of the guide groove (13) are provided with limiting grooves (19), and the extrusion The upper and lower sides of the top of the rod (8) are fixedly connected with stop blocks (20) that match the stop slots (19). 4. A spatula for separating printed models of a 3D printer according to claim 3, characterized in that: the length of the limiting groove (19) is shorter than the length of the guide groove (13).