CN107020750B - A pneumatic 3D printer - Google Patents

Abstract

The invention discloses a pneumatic 3D printer; the technical problems to be solved are as follows: the quality requirement on products is high for the manufacturing industry in the prior art, so that the printing precision of the printer is also high. At present, the existing 3D printer cannot meet the technical problem of requirements. The technical scheme adopted is that the pneumatic 3D printer comprises a bottom surface fixing plate, wherein a support guide shell is arranged on the bottom surface fixing plate, and a bracket rod is arranged outside the support guide shell; a cross rod is arranged at the top of the support rod, a bearing shaft plate is hung downwards at the middle position of the cross rod, and a pneumatic printing head is arranged at the lower end of the bearing shaft plate; a driving mechanism is arranged at the top of the supporting and guiding shell; the bottom surface fixing plate is provided with a workbench mechanism with adjustable height. The advantages are that: this pneumatic 3D printer has adopted unique structure, and this simple structure, the security is high, and working medium does not need the cost again, and output force and working speed easily adjust, can improve the printing precision of printer.

Description

A pneumatic 3D printer

technical field

The invention relates to a 3D printer device, in particular to a pneumatic 3D printer.

Background technique

Whether in our daily life or in the computer virtual environment, various 3D models are an indispensable part. The 3D printer is a converter that turns various virtual 3D models into real objects, and its appearance provides convenience for many jobs. In the manufacturing industry, the product model is printed out with a 3D printer in advance, and the designer can improve the design plan based on the sample, so as to make a better product, and at the same time, the customer can intuitively see the product he needs.

Since the manufacturing industry has high requirements for product quality, the printing accuracy of the printer is also very high. Currently, existing 3D printers cannot meet the requirements.

Contents of the invention

The technical problem to be solved by the invention is: the manufacturing industry in the prior art requires high product quality, so the printing accuracy of the printer is also high. Currently, existing 3D printers cannot meet the technical problems required.

The design concept of the present invention is to propose a new type of pneumatic 3D printer. The 3D printer uses a pneumatic control system to control printing. The force and working speed are easy to adjust, which can improve the printing accuracy of the 3D printer.

The purpose of the present invention is to improve the printing accuracy and keep the structure simple and reliable. The present invention provides a new type of pneumatic 3D printer. The printing head of the printer is controlled by a telescopic cylinder to move horizontally and vertically. the accuracy of its printing.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A pneumatic 3D printer, comprising a bottom fixing plate, a support guide shell is arranged vertically upward in the middle of the bottom fix plate, a support bar is arranged outside the support guide shell and the support bar is fixed on the bottom fix plate; a cross bar is arranged on the top of the support bar, The bearing shaft plate is suspended downward at the middle position of the cross bar, and the pneumatic printing head is set at the lower end of the bearing shaft plate; the printer material box and the feeding motor are fixedly set on the support rod; the top of the supporting guide shell is set for The drive mechanism that drives the pneumatic print head for 360° printing; the height-adjustable workbench mechanism is set on the bottom fixed plate, and the workbench mechanism is located inside the supporting and guiding shell;

The pneumatic printing head includes a printing head, at least two horizontally arranged horizontally telescopic cylinders and at least three vertically arranged vertically telescopic cylinders; the air pipes of all horizontally telescopic cylinders and the air pipes of all vertically telescopic cylinders are individually connected one-to-one for energy storage device;

The casing of the first horizontal telescopic cylinder is connected to the bearing shaft plate, the piston rod of the first horizontal telescopic cylinder is connected to the casing of the second horizontal telescopic cylinder, and the piston rod of the second horizontal telescopic cylinder is connected to the casing of the first vertical telescopic cylinder , the piston rod of the first vertically telescopic cylinder is connected to the casing of the second vertically telescopic cylinder, the piston rod of the second vertically telescopic cylinder is connected to the casing of the third vertically telescopic cylinder, and the piston rod of the third vertically telescopic cylinder Connect the print head;

The driving mechanism includes a motor arranged on the cross bar and the output shaft of the motor is vertically downward, an output gear is arranged on the output shaft of the motor, and an input gear plate is set externally meshing with the output gear, and the input gear plate is rotated and set on the bearing shaft plate; A horizontal connecting rod is fixedly arranged on the back plate of the input gear plate, one end of the horizontal connecting rod is connected to the pneumatic printing head, and the other end is provided with a guide slider, which moves in cooperation with a chute arranged on the top of the support guide housing.

In the technical solution of the present invention, the printing head is installed at one end of the telescopic cylinder, and the pneumatic system controls the movement of the telescopic cylinder through the air pipe and the accumulator. The telescopic cylinder directly in contact with the print head has joints to control the movement of the print head in the vertical direction. The telescopic cylinder indirectly connected with the printing head has two sections, which controls the movement of the printing head in the horizontal direction. Due to the length limit of the telescopic cylinder in the horizontal direction, there are two limit points when the print head moves laterally, that is, when the guide slider is at the far left, the print head can only move between the center point and the rightmost pole , so the guide slider is designed to move along the guide rail at the top of the guide housing, so that there is no blind spot in the movement area of the print head. As for the motion drive of the guide slider, it is indirectly driven by a small motor. The small motor drives the small gear, the small gear meshes with the large gear, and the guide slider is connected with the large gear, thus forming the whole transmission

system.

As an improvement to the technical solution of the present invention, a dovetail groove-shaped strut for engaging and guiding the trachea is vertically arranged on the outer surface of the supporting guide shell.

As a further improvement to the above technical solution, the air pipe is engaged in the dovetail grooved support rod.

As an improvement to the technical solution of the present invention, the worktable mechanism includes a balance platform arranged on the bottom fixed plate, an iron core is vertically arranged on the balance platform, an electromagnetic coil is wound on the iron core and the electromagnetic coil is connected to the circuit board, and the iron core and the The electromagnetic coil constitutes an electromagnetic converter; a spring is sheathed outside the electromagnetic converter, and the spring supports the printing table, and an iron block matched with the electromagnetic converter is arranged on the back of the printing table.

As a further improvement to the above technical solution, the printing station adopts an electric wire mesh heating printing station, and the electric wire mesh heating printing station is connected to a circuit board.

As a further improvement to the above technical solution, the workbench mechanism also includes two support and guide slide mechanisms arranged on the balance platform for auxiliary support of the printing platform, and the two support guide slide mechanisms are arranged symmetrically with respect to the electromagnetic converter;

Both support and guide mechanisms include a support block vertically on the balance platform, and a clamp block arranged on the back of the printing table in cooperation with the support block. The support block and the clamp block are locked by screws to support the printing table. role.

As an improvement to the technical solution of the present invention, heat dissipation passages are provided on the supporting and guiding shell.

As an improvement to the technical solution of the present invention, a limit sensor for limiting the center point and the rightmost position of the print head is provided in the chute on the top of the support guide housing.

The present invention compares with prior art, and its beneficial effect is:

1. The pneumatic 3D printer of the present invention has a simple structure of the pneumatic device, low pressure level, high safety, no cost for the working medium, and the most important thing is that the output force and working speed are easy to adjust, which can improve the printing accuracy of the printer.

2. In the pneumatic 3D printer of the present invention, the horizontal and vertical movement of the printing head is controlled by a telescopic cylinder, the structure is simple and reliable, and the printing accuracy is improved.

3. The pneumatic 3D printer of the present invention adopts a unique structure, which is simple in structure, high in safety, requires no cost for the working medium, easy to adjust the output force and working speed, and can improve the printing accuracy of the printer.

Description of drawings

Figure 1 is a schematic diagram of the external structure of a pneumatic 3D printer.

Fig. 2 is a schematic diagram of the internal structure of the support guide housing (the schematic diagram shows the mechanism of the print head and the workbench).

Fig. 3 is a schematic diagram of the structure of the pneumatic printing head.

Fig. 4 is a structural schematic diagram of the workbench mechanism.

Figure 5 is an electric screen heating printing station.

Detailed ways

The technical solutions of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the embodiments.

In order to make the content of the present invention more comprehensible, further description will be made below in conjunction with accompanying drawings 1-5 and specific implementation methods.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example

As shown in Figure 1, the pneumatic 3D printer includes a bottom fixed plate 1-1, a support and guide shell 1-6 is arranged vertically upward in the middle of the bottom surface fix plate 1-1, and a support rod 1 is arranged outside the support and guide shell 1-6 -2 and the support rod 1-2 is fixed on the bottom surface fixed plate 1-1; a cross bar is arranged on the top of the support rod 1-2, and a bearing shaft plate 1-9 is suspended downward at the middle position of the cross bar, and the bearing The lower end of the object shaft plate 1-9 is provided with a pneumatic print head; the printer material box 1-3 and the feeding motor 1-5 are fixedly installed on the support rod 1-2; the top of the support guide shell 1-6 is provided for driving pneumatic printing A drive mechanism for the head to perform 360° printing; a height-adjustable workbench mechanism is arranged on the bottom fixed plate 1-1, and the workbench mechanism is located inside the support guide shell 1-6. A heat dissipation channel 1-17 is arranged on the support guide shell 1-6. During implementation of this embodiment, a display screen 1-18 is provided on the support guide housing 1-6, and the display screen 1-18 displays corresponding parameter information through the control of the electric wire 2-7 and the display control board 2-8.

As shown in Figures 2 and 3, the pneumatic print head includes a print head, at least two horizontally arranged horizontal telescopic cylinders and at least three vertically arranged vertical telescopic cylinders; the air pipes 1-13 of all horizontally telescopic cylinders and all vertical telescopic cylinders The air pipes of the cylinders are all individually connected to the accumulators 1-14 in one-to-one correspondence. The housing of the first horizontally telescopic cylinder 3-1 is connected to the bearing shaft plate 1-9, the piston rod of the first horizontally telescopic cylinder is connected to the housing of the second horizontally telescopic cylinder 3-2, and the piston rod of the second horizontally telescopic cylinder is connected The housing of the first vertical telescopic cylinder 3-3, the piston rod of the first vertical telescopic cylinder connects the housing of the second vertical telescopic cylinder 3-4, and the piston rod of the second vertical telescopic cylinder connects the third vertical telescopic cylinder. The shell of the telescopic cylinder 3-5, the piston rod of the third vertical telescopic cylinder is connected to the printing head; the dovetail groove type support for engaging and guiding the air pipe 1-13 is vertically arranged on the outer surface of the support guide shell 1-6 Rods 1-4. The trachea 1-13 is engaged in the dovetail grooved strut 1-4.

As shown in Figure 3, when the compressed gas enters the vertical telescopic cylinder through the air hole through the air pipe 1-13, the second vertical telescopic cylinder 3-4 can carry out vertical movement in the first vertical telescopic cylinder 3-3. Telescopic movement, similarly when the compressed gas enters the cylinder in the horizontal direction from the air pipe through the air hole, the second horizontal telescopic cylinder 3-2 can perform the telescopic movement in the horizontal direction in the first horizontal telescopic cylinder 3-1. Through the above movement, the print head of the 3D printer is installed on the pneumatic telescopic cylinder, and the print head of the 3D printer can be pneumatically controlled to realize horizontal and vertical movements to print products. The pneumatic device has the advantages of simple structure, low pressure level, high safety, and no cost of working medium. The most important thing is that the output force and working speed are easy to adjust, which can improve the printing accuracy of the printer.

During implementation, the pneumatic system of the pneumatic printing head controls the movement of the telescopic cylinder through the air pipe 1-13 and the accumulator 1-14. The telescopic air cylinder directly in contact with the print head has 3 sections to control the movement of the print head in the vertical direction. The telescopic cylinder indirectly connected with the printing head has two sections, which controls the movement of the printing head in the horizontal direction. Due to the length limit of the telescopic cylinder in the horizontal direction, there are two limit points when the print head moves laterally, that is, when the guide slider 1-7 is on the leftmost side, the print head can only move between the center point and the rightmost limit point. Move between the poles determined by the position sensor 1-12, so the guide slider is designed to move along the guide rail at the top of the support guide shell 1-6, so that there is no blind spot in the movement area of the print head like this. As for the motion drive of the guide slider, it is indirectly driven by the motor 1-10. The motor drives the output gear 1-11, and the output gear 1-11 meshes with the input gear plate 1-

8, the input gear plate 1-8 is installed on the shaft on the bearing shaft plate 1-9. The guide slider is connected with the input gear plate 1-8, thereby forming the whole transmission system.

As shown in Figure 1, the drive mechanism includes a motor 1-10 arranged on the cross bar and the output shaft of the motor is vertically downward, an output gear 1-11 is arranged on the output shaft of the motor, and an input gear is set externally meshing with the output gear 1-11. The gear plate 1-8 and the input gear plate 1-8 are rotated and set on the bearing shaft plate 1-9; the horizontal connecting rod is fixedly installed on the back plate of the input gear plate 1-8, and one end of the horizontal connecting rod is connected to the pneumatic print head , the other end is provided with a guide slider 1-7, and the guide slider 1-7 cooperates with the movement of the chute arranged on the top of the support guide shell 1-6.

As shown in Figures 2, 4 and 5, the workbench mechanism includes a balance platform 2-2 arranged on the bottom fixed plate 1-1, an iron core is vertically arranged on the balance platform 2-2, and the iron core is wound on the iron core. The electromagnetic coil and the electromagnetic coil are connected to the circuit board 2-11, and the iron core and the electromagnetic coil form an electromagnetic converter 2-4; a spring 2-3 is sleeved outside the electromagnetic converter 2-4, and the spring 2-3 supports the printing table 2-5 , an iron block matched with the electromagnetic converter 2-4 is set on the back side of the printing table 2-5.

The workbench mechanism also includes two supporting guide slide mechanisms for auxiliary support of the printing table 2-5 arranged on the balance platform 2-2, and the two support guide slide mechanisms are symmetrically arranged with respect to the electromagnetic converter 2-4; The support guide slide mechanism all comprises the support block 2-9 that is vertically on the balance carrier 2-2, matches with the support block and is arranged on the clip block on the printing table 2-5 back side, passes the screw between the support block and the clip block 2-10 lock plays the role of supporting printing platform 2-5. The printing table 2-5 adopts an electric wire mesh heating printing table, and the electric wire mesh heating printing table is connected to the circuit board 2-11.

The height-adjustable worktable mechanism in this embodiment adopts a magnetic induction coil, and the printing table 2-5 is connected with the circuit board 2-11. The lower bottom surface of the printing table 2-5 and the upper top surface of the balance carrier 2-2 are respectively fixed with the upper end and the lower end of the spring 2-3. Inside the spring is a magnetic induction coil and an iron core, and the iron core and the electromagnetic coil form an electromagnetic converter 2- 4. The iron core is set vertically on the balance platform 2-2, and the bottom surface of the printing platform 2-5 is also fixed with an iron block. When the iron core is energized during work, the iron block under the printing platform is sucked, and the printing platform moves down. The greater the current, the greater the distance the print table will move down. In addition, two supporting and sliding mechanisms are specially designed, which are composed of grooved supporting blocks 2-9 and screws 2-10, so as to ensure the balance of the printing table. The height-adjustable worktable mechanism has a simple and reliable structure, and the height of the printing table is easy to adjust, which can improve the printing accuracy of the 3D printer.

The pneumatic 3D printer of the present invention has a simple structure of the pneumatic device, low pressure level, high safety, no cost for the working medium, and the most important thing is that the output force and working speed are easy to adjust, which can improve the printing accuracy of the printer.

The parts not involved in the present invention are the same as the prior art or can be realized by adopting the prior art.

As stated above, while the invention has been shown and described with reference to certain preferred embodiments, this should not be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The pneumatic 3D printer is characterized by comprising a bottom surface fixing plate (1-1), wherein a support guide shell (1-6) is vertically and upwards arranged in the middle of the bottom surface fixing plate (1-1), a bracket rod (1-2) is arranged outside the support guide shell (1-6), and the bracket rod (1-2) is fixed on the bottom surface fixing plate (1-1); a cross rod is arranged at the top of the bracket rod (1-2), a bearing shaft plate (1-9) is hung downwards at the middle position of the cross rod, and a pneumatic printing head is arranged at the lower end of the bearing shaft plate (1-9); a printer material box (1-3) and a feeding motor (1-5) are fixedly arranged on the bracket rod (1-2); a driving mechanism for driving the pneumatic printing head to print at 360 degrees is arranged at the top of the supporting and guiding shell (1-6); a workbench mechanism with adjustable height is arranged on the bottom surface fixing plate (1-1), and is positioned in the support guide shell (1-6);

the pneumatic printing head comprises a printing head, at least two horizontal telescopic cylinders horizontally arranged and at least three vertical telescopic cylinders vertically arranged; the air pipes (1-13) of all the horizontal telescopic air cylinders and the air pipes of all the vertical telescopic air cylinders are respectively and correspondingly connected with the energy accumulators (1-14), dovetail groove type supporting rods (1-4) for clamping and guiding the air pipes (1-13) are vertically arranged on the outer surfaces of the supporting and guiding shells (1-6), and the air pipes (1-13) are clamped in the dovetail groove type supporting rods (1-4);

the shell of the first horizontal telescopic cylinder is connected with the object bearing shaft plate (1-9), the piston rod of the first horizontal telescopic cylinder is connected with the shell of the second horizontal telescopic cylinder, the piston rod of the second horizontal telescopic cylinder is connected with the shell of the first vertical telescopic cylinder, the piston rod of the first vertical telescopic cylinder is connected with the shell of the second vertical telescopic cylinder, the piston rod of the second vertical telescopic cylinder is connected with the shell of the third vertical telescopic cylinder, and the piston rod of the third vertical telescopic cylinder is connected with the printing head;

the driving mechanism comprises a motor (1-10) arranged on the cross rod, an output shaft of the motor is vertically downward, an output gear (1-11) is arranged on the output shaft of the motor, an input gear disc (1-8) is arranged in external engagement with the output gear (1-11), and the input gear disc (1-8) is rotatably arranged on a bearing shaft plate (1-9); a horizontal connecting rod is fixedly arranged on a backboard of the input gear disc (1-8), one end of the horizontal connecting rod is connected with the pneumatic printing head, the other end of the horizontal connecting rod is provided with a guide sliding block (1-7), and the guide sliding block (1-7) is matched with a sliding groove arranged at the top of the support guide shell (1-6) to move;

the workbench mechanism comprises a balance carrying platform (2-2) arranged on a bottom surface fixing plate (1-1), an iron core is vertically arranged on the balance carrying platform (2-2), an electromagnetic coil is wound on the iron core and is communicated with a circuit board, and the iron core and the electromagnetic coil form an electromagnetic converter (2-4); the electromagnetic converter (2-4) is externally sleeved with a spring (2-3), the spring (2-3) supports the printing table (2-5), and an iron block matched with the electromagnetic converter (2-4) is arranged on the back surface of the printing table (2-5).

2. The pneumatic 3D printer of claim 1, wherein the stage mechanism further comprises two support slide guiding mechanisms for assisting in supporting the printing table (2-5) provided on the balancing stage (2-2), the two support slide guiding mechanisms being symmetrically provided with respect to the electromagnetic transducer (2-4);

the two support slide guiding mechanisms comprise support blocks which are vertically arranged on the balance carrying platform (2-2), clamping blocks which are matched with the support blocks and are arranged on the back surface of the printing platform (2-5), and the support blocks and the clamping blocks are locked through screws to play a role in supporting the printing platform (2-5).

3. Pneumatic 3D printer according to claim 2, characterized in that the printing stations (2-5) are wire mesh heat generating printing stations which are connected to the circuit board (2-11).

4. Pneumatic 3D printer according to claim 1, characterized in that the heat dissipation channels (1-17) are provided on the support and guide housing (1-6).

5. Pneumatic 3D printer according to claim 1, characterized in that limit sensors (1-12) for limiting the print head at the centre point and to the right are provided in a chute supporting the top of the guide housing (1-6).