CN220763572U - 3D prints elevating gear - Google Patents

Abstract

The utility model discloses a 3D printing lifting device which comprises a frame, a forming cylinder body, a sliding supporting mechanism, a bottom lifting mechanism and a top pulling bearing mechanism. The forming cylinder body is fixedly arranged at the upper part of the frame. The sliding support mechanism is arranged at the middle lower part of the frame through the bottom lifting mechanism and is positioned right below the forming cylinder body. The fixed part of the top pull bearing mechanism is fixedly arranged at the top of the frame and positioned at the outer side of the forming cylinder body. The utility model realizes the complete bearing of the sliding supporting mechanism by arranging the top pull bearing mechanism, so that the bottom lifting mechanism is free from the action of external force, the accurate and stable control of the downward moving dimension in the printing process is greatly improved, the service life of the bottom lifting mechanism is prolonged, the product quality and the printing efficiency are effectively ensured, the printing cost is saved, and the bottom lifting mechanism has the advantages of simple structure, easy operation, high control precision, high production effect and low cost.

Description

3D prints elevating gear

Technical Field

The utility model relates to 3D printing equipment, in particular to a 3D printing lifting device, and belongs to the technical field of 3D printing.

Background

3D printing, also known as additive manufacturing, is a technology for constructing objects by using a layer-by-layer printing method by using a powdery metal or plastic or other bondable material on the basis of a digital model file. 3D printing is typically implemented using a digital technology material printer. Often in the fields of mould manufacture, industrial design, etc., are used to manufacture models, and later gradually in the direct manufacture of some products, parts have been printed using this technique. The technology has application in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.

When the existing 3D printer prints products, in the material adding process, each layer is printed, the lifting platform descends by a distance of one layer, then the next layer is printed, and the weight born by the lifting platform can be gradually increased. The structure that adopts at present is servo motor drive lead screw drive elevating platform up-and-down motion, and all weights are directly born by the lead screw, and after long-term, the lead screw appears warping easily, and then leads to the transmission precision of lead screw to become poor easily, finally influences the quality of printing product.

Disclosure of Invention

Aiming at the problems that most of weight is born by a screw rod with required transmission precision and the transmission precision is deteriorated to influence the quality of a printing product due to the fact that the screw rod is easy to deform after long-time use in the existing 3D printing technology, the utility model provides the 3D printing lifting device with the lifting mechanism and the pull-bearing mechanism.

In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows:

A3D printing lifting device comprises a frame, a forming cylinder body, a sliding supporting mechanism, a bottom lifting mechanism and a top pulling bearing mechanism. The forming cylinder body is fixedly arranged at the upper part of the frame. The sliding support mechanism is arranged at the middle lower part of the frame through the bottom lifting mechanism and is positioned right below the forming cylinder body. The fixed part of the top pull bearing mechanism is fixedly arranged at the top of the frame and positioned at the outer side of the forming cylinder body, and the movable part of the top pull bearing mechanism extends downwards and is connected with the sliding supporting mechanism.

Preferably, the frame comprises a base and an upright. A plurality of upright posts (for example, 2-4 upright posts) are vertically arranged on the base and are respectively positioned on two sides of the surface of the base. The shaping cylinder body is fixed to be set up between the upper ends of many stands. The bottom elevating system sets up on the base, and top draws and holds the mechanism setting at the stand top.

Preferably, the forming cylinder body is of a circular or rectangular tubular structure. A movable cylinder bottom is also arranged in the pipe cavity of the forming cylinder body, namely the movable cylinder bottom can slide up and down in the pipe cavity of the forming cylinder body.

Preferably, the sliding support mechanism includes a sliding table, a guide rod, and a top block. A plurality of guide rods (for example, 2-8 guide rods) are vertically arranged on the base and are positioned among the upright posts. The sliding table is arranged between the plurality of guide rods and is movably connected with the plurality of guide rods through the sliding sleeve. The top block is arranged on the surface of the sliding table, and the upper end of the top block extends upwards to be connected with the bottom surface of the movable cylinder bottom. The bottom lifting mechanism and the top pull bearing mechanism are both connected with the sliding table.

Preferably, the sliding support mechanism further comprises a grating ruler. The grating ruler is vertically arranged on one side of the guide rod or is paved along the axial direction of the guide rod.

Preferably, the bottom lifting mechanism comprises a bottom motor and a ball screw. The bottom motor is arranged on the surface of the base. The bottom of ball is connected with the bottom motor, and its top upwards extends and runs through the sliding table. The ball screw is connected with the sliding table through matched threads.

Preferably, the bottom motor is a deceleration servo motor.

Preferably, the top pull bearing mechanism comprises a balance cylinder and a telescopic rod. The balance cylinder is fixedly arranged on one side of the top of the upright post. The fixed end of the telescopic rod is connected with the balance cylinder, and the movable end of the telescopic rod extends downwards to be connected with the sliding table.

Preferably, the top pull bearing mechanism comprises a plurality of balance cylinders, the top of each upright post is provided with a balance cylinder, and each balance cylinder is connected with an independent telescopic rod. All balancing cylinders are associated with each other in synchronization.

Preferably, the balancing cylinder is a hydraulic cylinder or an electric cylinder.

Preferably, a pressure sensor is further provided between the ball screw and the slide table.

According to the utility model, the top stretching mechanism is additionally arranged between the upper part of the lifting mechanism and the frame, and the top stretching mechanism is arranged, so that the whole weight of the lifting sliding table can be borne by the top stretching mechanism, the ball screw is not influenced by external force (namely, the pressure of the sliding table is zero), the deformation of the ball screw caused by long-term stress is avoided, the transmission precision of the ball screw is further influenced, and the stability of the quality of a printed product is effectively ensured.

In the utility model, the top pull bearing mechanism comprises a balance cylinder and a telescopic rod, wherein the balance cylinder is fixedly arranged at the top of the frame, the lifting sliding table is pulled by the output power of the telescopic rod, the output pressure (namely, the upward tension) of the balance cylinder can be changed along with the weight change of the balanced sliding table, and the two forces are equal in magnitude but opposite in direction. The output pressure of the balance cylinder is hydraulic oil pressure or electric pressure, and the purpose of enabling the external force born by the ball screw to be zero is achieved by controlling the pressure output of the balance cylinder.

In the utility model, the sliding table is lifted to a working position from the bottom through the bottom lifting mechanism, the bottom motor (such as a speed reducing servo motor) drives the ball screw to rotate, the sliding sleeve fixed on the sliding table moves upwards along the guide rod, and meanwhile, the telescopic rod connected with the balance cylinder contracts to pull up the sliding table to move upwards. Until the top block arranged on the sliding table contacts with the movable cylinder bottom arranged in the forming cylinder body, the output tension is increased, and the sliding table is driven to move to the printing position of the forming cylinder body arranged at the top of the frame. A print job is ready to start. The pulling force in the rising process is output by the balance cylinder, and the external force born by the screw rod is zero.

In the utility model, after printing starts, as 3D printing is a mechanism of layering additive printing, the working position of the sliding table moves to the next layer by layer. The weight (powder weight + molded product weight) carried by the slide table is also increased layer by layer. At the moment, the tension output by the balance cylinder is increased, and then the whole weight is borne, so that the external force borne by the screw is still zero, and the bottom motor, the ball screw and the grating ruler are accurately controlled in the downward movement size. This is until the additive manufacturing process of the finished product is completed. The whole process is stable, the lifting platform moves accurate control, and zero-gravity accurate position control printing is realized.

In the utility model, the application of the top balance cylinder and the control of the pressure output of the balance cylinder achieve the aim of enabling the external force born by a motion precision control component (such as a ball screw, a speed reduction servo motor and the like) to be close to zero. The components are free from deformation, the control precision and stability are greatly improved, and the service life is also greatly prolonged. The whole 3D printing equipment lifting platform structure can be greatly reduced, and particularly, for oversized pieces, if the lifting platform bears tens of tons of weight, the application of the zero-gravity lifting platform can promote 3D printing quality and stably control the driving protection navigation in the printing process.

In the utility model, an intelligent control system (such as a PLC control system) is used for implementing accurate automatic control in the whole printing process, and the pressure signal transmitted in real time by the pressure sensor is used for controlling the pressure output of the balance cylinder in real time, so that automatic accurate control is realized.

Compared with the prior art, the utility model has the following beneficial technical effects:

1: according to the 3D printing lifting device, the top pull bearing mechanism is arranged to realize complete bearing of the sliding supporting mechanism, so that the bottom lifting mechanism is free from the action of external force, the accurate and stable control of the downward movement size in the printing process is greatly improved, the service life of the device is prolonged, the product quality and the printing efficiency are effectively ensured, and the printing cost is saved.

2: the 3D printing lifting device has the advantages of simple structure, easiness in operation, high control precision, high production effect and low cost.

Drawings

Fig. 1 is a schematic view of the structure of the present utility model in an initial state.

Fig. 2 is a schematic diagram of the structure of the utility model after printing.

Reference numerals: 1: a frame; 101: a base; 102: a column; 2: forming a cylinder body; 3: a sliding support mechanism; 301: a sliding table; 302: a guide rod; 303: a top block; 304: a sliding sleeve; 305: a grating ruler; 4: a bottom lifting mechanism; 401: a bottom motor; 402: a ball screw; 5: a top pull-bearing mechanism; 501: a balancing cylinder; 502: a telescopic rod; 6: a movable cylinder bottom.

Detailed Description

The following examples illustrate the technical aspects of the utility model, and the scope of the utility model claimed includes but is not limited to the following examples.

A3D printing lifting device comprises a frame 1, a forming cylinder body 2, a sliding supporting mechanism 3, a bottom lifting mechanism 4 and a top pull bearing mechanism 5. The forming cylinder body 2 is fixedly arranged at the upper part of the frame 1. The sliding support mechanism 3 is arranged at the middle lower part of the frame 1 through the bottom lifting mechanism 4 and is positioned right below the forming cylinder body 2. The fixed part of the top pull bearing mechanism 5 is fixedly arranged at the top of the frame 1 and positioned at the outer side of the forming cylinder body 2, and the movable part of the top pull bearing mechanism 5 extends downwards and is connected with the sliding support mechanism 3.

Preferably, the frame 1 includes a base 101 and a post 102. The plurality of upright posts 102 are vertically arranged on the base 101 and are respectively positioned on two sides of the surface of the base 101. The forming cylinder 2 is fixedly provided between the upper ends of the plurality of columns 102. The bottom lifting mechanism 4 is arranged on the base 101, and the top pull bearing mechanism 5 is arranged at the top end of the upright post 102.

Preferably, the forming cylinder 2 has a circular or rectangular tubular structure. A movable cylinder bottom 6 is also arranged in the pipe cavity of the forming cylinder body 2, namely the movable cylinder bottom 6 can slide up and down in the pipe cavity of the forming cylinder body 2.

Preferably, the sliding support mechanism 3 includes a sliding table 301, a guide rod 302, and a top block 303. A plurality of guide bars 302 are vertically disposed on the base 101 and are each located between the plurality of posts 102. The sliding table 301 is disposed between the plurality of guide bars 302 and is movably connected to the plurality of guide bars 302 by a sliding sleeve 304. The top block 303 is provided on the surface of the slide table 301, and its upper end extends upward to be connected to the bottom surface of the movable cylinder bottom 6. The bottom lift mechanism 4 and the top pull bearing mechanism 5 are both connected to the slide table 301.

Preferably, the sliding support mechanism 3 further includes a grating ruler 305. The grating ruler 305 is vertically arranged on one side of the guide rod 302 or is paved along the axial direction of the guide rod 302.

Preferably, the bottom lifting mechanism 4 includes a bottom motor 401 and a ball screw 402. The bottom motor 401 is disposed on the surface of the base 101. The bottom end of the ball screw 402 is connected to the bottom motor 401, and the top end thereof extends upward and penetrates the slide table 301. The ball screw 402 is connected to the slide table 301 by a mating screw thread.

Preferably, the bottom motor 401 is a deceleration servo motor.

Preferably, the top pull mechanism 5 includes a balancing cylinder 501 and a telescoping rod 502. The balance cylinder 501 is fixedly arranged on one side of the top of the upright post 102. The fixed end of the telescopic rod 502 is connected with the balance cylinder 501, and the movable end thereof extends downward to be connected with the slide table 301.

Preferably, the top pulling mechanism 5 includes a plurality of balancing cylinders 501, a balancing cylinder 501 is disposed on top of each upright 102, and a separate telescopic rod 502 is connected to each balancing cylinder 501. All balancing cylinders 501 are associated with each other in synchronization.

Preferably, the balancing cylinder 501 is a hydraulic cylinder or an electric cylinder.

Preferably, a pressure sensor is further provided between the ball screw 402 and the slide table 301.

Example 1

As shown in fig. 1-2, a 3D printing lifting device comprises a frame 1, a forming cylinder 2, a sliding support mechanism 3, a bottom lifting mechanism 4 and a top pull bearing mechanism 5. The forming cylinder body 2 is fixedly arranged at the upper part of the frame 1. The sliding support mechanism 3 is arranged at the middle lower part of the frame 1 through the bottom lifting mechanism 4 and is positioned right below the forming cylinder body 2. The fixed part of the top pull bearing mechanism 5 is fixedly arranged at the top of the frame 1 and positioned at the outer side of the forming cylinder body 2, and the movable part of the top pull bearing mechanism 5 extends downwards and is connected with the sliding support mechanism 3.

Example 2

Example 1 is repeated except that the frame 1 includes a base 101 and a post 102. The two upright posts 102 are vertically arranged on the base 101 and are respectively positioned on two sides of the surface of the base 101. The forming cylinder 2 is fixedly arranged between the upper ends of the two uprights 102. The bottom lifting mechanism 4 is arranged on the base 101, and the top pull bearing mechanism 5 is arranged at the top end of the upright post 102.

Example 3

Example 2 was repeated except that the forming cylinder 2 had a rectangular tubular structure. A movable cylinder bottom 6 is also arranged in the pipe cavity of the forming cylinder body 2, namely the movable cylinder bottom 6 can slide up and down in the pipe cavity of the forming cylinder body 2.

Example 4

Embodiment 3 is repeated except that the slide supporting mechanism 3 includes a slide table 301, a guide rod 302, and a top block 303. The 3 guide rods 302 are vertically arranged on the base 101 and are positioned between the two upright posts 102. The sliding table 301 is disposed between 3 guide bars 302 and movably connected to the plurality of guide bars 302 by sliding sleeves 304. The top block 303 is provided on the surface of the slide table 301, and its upper end extends upward to be connected to the bottom surface of the movable cylinder bottom 6. The bottom lift mechanism 4 and the top pull bearing mechanism 5 are both connected to the slide table 301.

Example 5

Example 4 is repeated except that the sliding support mechanism 3 further includes a grating scale 305. The grating ruler 305 is vertically arranged at one side of the guide rod 302.

Example 6

Embodiment 5 is repeated except that the bottom lift mechanism 4 includes a bottom motor 401 and a ball screw 402. The bottom motor 401 is disposed on the surface of the base 101. The bottom end of the ball screw 402 is connected to the bottom motor 401, and the top end thereof extends upward and penetrates the slide table 301. The ball screw 402 is connected to the slide table 301 by a mating screw thread.

Example 7

Example 6 is repeated except that the bottom motor 401 is a deceleration servo motor.

Example 8

Example 7 is repeated except that the top pull mechanism 5 includes a balancing cylinder 501 and a telescoping rod 502. The balance cylinder 501 is fixedly arranged on one side of the top of the upright post 102. The fixed end of the telescopic rod 502 is connected with the balance cylinder 501, and the movable end thereof extends downward to be connected with the slide table 301.

Example 9

Example 8 is repeated except that the top pull mechanism 5 includes a plurality of balancing cylinders 501, a balancing cylinder 501 is disposed on top of each upright 102, and a separate telescopic rod 502 is connected to each balancing cylinder 501. All balancing cylinders 501 are associated with each other in synchronization.

Example 10

Example 9 is repeated except that the balancing cylinder 501 is an electric cylinder.

Example 11

Example 9 is repeated except that the balancing cylinder 501 is a hydraulic cylinder.

Example 12

Embodiment 11 is repeated except that a pressure sensor is further provided between the ball screw 402 and the slide table 301.

Claims (10)

1. 3D prints elevating gear, its characterized in that: the device comprises a frame (1), a forming cylinder body (2), a sliding supporting mechanism (3), a bottom lifting mechanism (4) and a top pull bearing mechanism (5); the forming cylinder body (2) is fixedly arranged at the upper part of the frame (1); the sliding support mechanism (3) is arranged at the middle lower part of the frame (1) through the bottom lifting mechanism (4) and is positioned right below the forming cylinder body (2); the fixed part of the top pull bearing mechanism (5) is fixedly arranged at the top of the frame (1) and positioned at the outer side of the forming cylinder body (2), and the movable part of the top pull bearing mechanism (5) extends downwards and is connected with the sliding supporting mechanism (3).

2. The apparatus according to claim 1, wherein: the frame (1) comprises a base (101) and an upright post (102); the upright posts (102) are vertically arranged on the base (101) and are respectively positioned on two sides of the surface of the base (101); the forming cylinder body (2) is fixedly arranged between the upper ends of the upright posts (102); the bottom lifting mechanism (4) is arranged on the base (101), and the top pull bearing mechanism (5) is arranged at the top end of the upright post (102).

3. The apparatus according to claim 1 or 2, characterized in that: the forming cylinder body (2) is of a circular or rectangular tubular structure; a movable cylinder bottom (6) is also arranged in the pipe cavity of the forming cylinder body (2), namely, the movable cylinder bottom (6) can slide up and down in the pipe cavity of the forming cylinder body (2).

4. A device according to claim 3, characterized in that: the sliding support mechanism (3) comprises a sliding table (301), a guide rod (302) and a top block (303); the guide rods (302) are vertically arranged on the base (101) and are positioned among the upright posts (102); the sliding table (301) is arranged among the plurality of guide rods (302) and is movably connected with the plurality of guide rods (302) through sliding sleeves (304); the top block (303) is arranged on the surface of the sliding table (301), and the upper end of the top block extends upwards to be connected with the bottom surface of the movable cylinder bottom (6); the bottom lifting mechanism (4) and the top pull bearing mechanism (5) are connected with the sliding table (301).

5. The apparatus according to claim 4, wherein: the sliding support mechanism (3) further comprises a grating ruler (305); the grating ruler (305) is vertically arranged on one side of the guide rod (302) or is paved along the axial direction of the guide rod (302).

6. The apparatus according to claim 4 or 5, wherein: the bottom lifting mechanism (4) comprises a bottom motor (401) and a ball screw (402); the bottom motor (401) is arranged on the surface of the base (101); the bottom end of the ball screw (402) is connected with the bottom motor (401), and the top end of the ball screw extends upwards and penetrates through the sliding table (301); the ball screw (402) and the sliding table (301) are connected through matched threads.

7. The apparatus according to claim 6, wherein: the bottom motor (401) is a speed reduction servo motor.

8. The apparatus according to claim 6 or 7, characterized in that: the top pull bearing mechanism (5) comprises a balance cylinder (501) and a telescopic rod (502); the balance cylinder (501) is fixedly arranged on one side of the top of the upright post (102); the fixed end of the telescopic rod (502) is connected with the balance cylinder (501), and the movable end of the telescopic rod extends downwards to be connected with the sliding table (301).

9. The apparatus according to claim 8, wherein: the top pull bearing mechanism (5) comprises a plurality of balance cylinders (501), the top of each upright post (102) is provided with a balance cylinder (501), and each balance cylinder (501) is connected with an independent telescopic rod (502); all balancing cylinders (501) are associated with each other in synchronization.

10. The apparatus according to claim 8 or 9, characterized in that: the balance cylinder (501) is a hydraulic cylinder or an electric cylinder; and/or

A pressure sensor is also provided between the ball screw (402) and the slide table (301).