阅读说明：本技术 一种灵活改变铺砂幅面的3d砂型打印装置及其使用方法 (3D sand mold printing device capable of flexibly changing sanding breadth and using method thereof ) 是由 李伟明 江剑 沈光 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种灵活改变铺砂幅面的3D砂型打印装置及方法,包括铺沙装置和平板机构,所述平板机构安装于所述铺沙装置下方,所述铺沙装置包括铺沙座,所述铺沙座上安装有移动铺沙体,所述移动铺沙体上安装有漏沙机构,所述漏沙机构安装于所述移动铺沙体的支座上,所述漏沙机构下侧安装铺沙孔,所述铺沙孔上安装有沙孔挡板,所述沙孔挡板滑动连接于所述移动铺沙体一侧的滑轨上,所述平板机构包括铺沙板,所述铺沙板下端设置有纵伸缩机构,所述纵伸缩机构安装于打印底座上,通过灵活改变铺砂幅面的3D砂型打印装置,完成对不同要求的砂型打印进行随时改变,降低原材料的浪费,减少原沙的使用,同时在使用过程中,降低原沙使用的同时提高产品质量。(The invention discloses a 3D sand printing device and a method for flexibly changing the sanding breadth, which comprises a sanding device and a flat plate mechanism, wherein the flat plate mechanism is arranged below the sanding device, the sanding device comprises a sanding seat, a movable sanding body is arranged on the sanding seat, a sand leaking mechanism is arranged on the movable sanding body, the sand leaking mechanism is arranged on a support of the movable sanding body, a sanding hole is arranged at the lower side of the sand leaking mechanism, a sand hole baffle is arranged on the sanding hole, the sand hole baffle is connected to a sliding rail at one side of the movable sanding body in a sliding manner, the flat plate mechanism comprises a sanding plate, a longitudinal telescopic mechanism is arranged at the lower end of the sanding plate, the longitudinal telescopic mechanism is arranged on a printing base, sand printing with different requirements is completed at any time through the 3D sand printing device for flexibly changing the sanding breadth, the waste of raw materials is reduced, the use of the original sand is reduced, and meanwhile, in the use process, the product quality is improved while the use of the original sand is reduced.)

1. A3D sand mould printing device capable of flexibly changing the breadth of sand laying is characterized by comprising a sand laying device and a flat plate mechanism, wherein the flat plate mechanism is installed below the sand laying device and comprises a sand laying seat, a movable sand laying body is installed on the sand laying seat, a sand leaking mechanism is installed on the movable sand laying body and is installed on a support of the movable sand laying body, a sand laying hole is installed on the lower side of the sand leaking mechanism, a sand hole baffle is installed on one side of the sand laying hole and is connected to one side of the movable sand laying body in a sliding mode, the flat plate mechanism comprises a sand laying plate, a longitudinal telescopic mechanism is arranged at the lower end of the sand laying plate and is installed on a printing base, a transverse telescopic mechanism is arranged on one side of the upper end of the longitudinal telescopic mechanism, one end of the transverse telescopic mechanism is fixed to one side of the lower end of the sand laying plate, the other end of the transverse telescopic mechanism is arranged on the other side of the sand paving plate, and the movable sand paving body is provided with a limiting device.

2. The 3D sand printing device capable of flexibly changing sanding breadth according to claim 1, wherein the sanding plate comprises a first sanding plate, a second sanding plate and a middle plate, one side of the first sanding plate is movably connected with one side of the middle plate, one side of the second sanding plate is movably connected with the other side of the middle plate, the lower end of the first sanding plate is connected with one end of the transverse telescopic mechanism, the lower end of the second sanding plate is movably connected with the other end of the transverse telescopic mechanism, and the lower end of the middle plate is fixedly connected with the longitudinal telescopic mechanism.

3. The 3D sand mold printing device capable of flexibly changing the sanding breadth according to claim 1, wherein the sand hole baffle comprises a longitudinal plate and a transverse plate, the longitudinal plate is fixed on one side of the movable sanding body, the transverse plate is fixedly installed at the lower end of the longitudinal plate, a telescopic rod is arranged on one side of the transverse plate, and the front end of the telescopic rod penetrates through the inside of the transverse plate and extends to the other end of the transverse plate.

4. The 3D sand mold printing device capable of flexibly changing sanding breadth according to claim 3, wherein the transverse plates comprise a first transverse plate, a second transverse plate and a third transverse plate, the first transverse plate is slidably connected with the second transverse plate, the third transverse plate is slidably connected with the second transverse plate, one side of the inner portion of the first transverse plate is fixedly connected with the front end of the telescopic rod, and the third transverse plate is connected with the other end of the telescopic rod.

5. The 3D sand mold printing device capable of flexibly changing the sanding breadth according to claim 4, wherein a plurality of leaking holes are formed in the upper end surfaces of the first transverse plate, the second transverse plate and the third transverse plate, the leaking holes correspond to the sanding holes, an arc-shaped groove is formed in the lower end of each leaking hole, the arc-shaped groove extends to one side of the third transverse plate, and a sand suction pipe is arranged on one side of the arc-shaped groove.

6. The 3D sand printing device capable of flexibly changing the sanding surface according to claim 5, wherein the arc-shaped grooves are flexible telescopic grooves.

7. The 3D sand mold printing device capable of flexibly changing the sanding breadth according to claim 4, wherein the limiting device comprises an X-coordinate limiting device and a Y-coordinate limiting device, the X-coordinate limiting device is installed on a movable sanding body, the Y-coordinate limiting device is installed on a sand leaking seat at the upper end of the movable sanding body, and the Y-coordinate limiting device controls the longitudinal sand leaking position of the sand leaking seat.

8. Use method of a 3D sand printing device with flexible sanding web change, characterized in that the 3D sand printing device with flexible sanding web change is a 3D sand printing device according to any of claims 1 to 7, comprising the steps of:

s1: carrying out sand laying operation according to a program, wherein the movable sand laying body moves to lay sand, the X coordinate limit control is carried out according to the size of a printed part to control the transverse sand laying interval of the movable sand laying body, the Y coordinate limit control is carried out to control the longitudinal sand leaking distance at the upper end of the sand leaking seat, and the maximum cross-sectional area of the printed part is calculated to control the sand leaking amount and the sand laying area;

s2: when the flat plate mechanism is used for carrying the sand paving operation of the movable sand paving body, sand paving is carried out through the sand paving area calculated in the step S1, the angle of one of the first paving plate or the second paving plate is adjusted through the sand paving area in the sand paving process, the angle of the unused first paving plate or the angle of the unused second paving plate is adjusted to enable the unused first paving plate or the unused second paving plate to be inclined to the middle plate, leaked sand falling on the middle plate slides along the inclined angle to be collected, and waste of the sand is reduced;

s3: in the process of sand paving 3D printing, the sand hole baffle is used for controlling the sand leakage amount and area in the sand paving process, the sand leakage amount is controlled through the first transverse plate, the second transverse plate and the third transverse plate on the transverse plates on the sand hole baffle, meanwhile, redundant sand is collected through the leakage holes, and redundant sand grains are recycled while printing is completed.

Technical Field

The invention relates to the technical field of 3D printing model manufacturing, in particular to a 3D sand mold printing device capable of flexibly changing sanding breadth and a using method thereof.

Background

In recent years, with continuous breakthroughs in 3D printing research and development technologies, 3D printing has been successfully applied to the fields of aerospace, biomedical, architecture, automobiles and the like, and breakthrough progress is continuously made. The manufacturing principle of the 3D printing technology is based on the idea of additive manufacturing, a mould is not needed, parts with any complex shapes can be quickly and accurately manufactured on one device only by utilizing three-dimensional design data, the processing period is effectively shortened, quick manufacturing of single-piece small-batch complex-shape products is easy to realize, and the method has obvious cost and efficiency advantages. The 3DP technology, namely the three-dimensional powder bonding technology, is developed by the university of March, science and technology, the raw materials of the technology are powder materials such as ceramic powder, metal powder and plastic powder, and the 3DP working principle is that a layer of powder is paved firstly, then a nozzle is used for spraying a bonding agent to an area needing forming, the part is bonded in a split mode to form the section of the part, and the part is formed by stacking the powder layers.

The existing sand mold 3D printing equipment adopts furan resin, the principle is that a sulfonic acid curing agent is premixed in raw sand, the raw sand mixed with the curing agent is flatly paved in a working box layer by layer through a sand paving device, and the furan resin is sprayed on a part of each layer of section needing to be molded. And forming a required shape by curing reaction and stacking layer by layer. Along with sand mould 3D equipment is applied to casting production gradually, because the flexibility that 3D printed and the current situation of casting trade, need the printer of big breadth just can satisfy the production demand.

However, sometimes a small piece needs to be printed quickly, and when no other products are printed simultaneously, relatively large waste (mainly waste of raw sand and curing agent) is caused.

Disclosure of Invention

The invention aims to provide a 3D sand mold printing device capable of flexibly changing a sanding breadth and a using method thereof, which are used for solving the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: A3D sand mold printing device capable of flexibly changing the sanding breadth comprises a sand paving device and a flat plate mechanism, wherein the flat plate mechanism is installed below the sand paving device, the sand paving device comprises a sand paving seat, a movable sand paving body is installed on the sand paving seat, a sand leaking mechanism is installed on the movable sand paving body, the sand leaking mechanism is installed on a support of the movable sand paving body, a sand paving hole is installed at the lower side of the sand leaking mechanism, a sand hole baffle is installed at one side of the sand paving hole and is connected to one side of the movable sand paving body in a sliding mode, the flat plate mechanism comprises a sand paving plate, a longitudinal telescopic mechanism is arranged at the lower end of the sand paving plate and is installed on a printing base, a transverse telescopic mechanism is arranged on one side of the upper end of the longitudinal telescopic mechanism, one end of the transverse telescopic mechanism is fixed to one side of the lower end of the sand paving plate, the other end of the transverse telescopic mechanism is installed on the other, a limiting device is arranged on the movable sand laying body; can accomplish the control to the sanding area through spreading husky device and flat mechanism, to the waste of former sand when controlling to spread husky through controlling to spread husky area, when reducing to spread husky area, collect unnecessary former sand through spreading husky board, be convenient for retrieve the former sand, stop device can accomplish to spreading the sand face and remove the sand leakage area control of the body of spreading sand, and what sprinkle is spread to former sand is accomplished in advance through calculating.

Preferably, the sand paving plate comprises a first paving plate, a second paving plate and a middle plate, one side of the first paving plate is movably connected with one side of the middle plate, the lower end of the first paving plate is connected with one end of the transverse telescopic mechanism, the lower end of the second paving plate is movably connected with the other end of the transverse telescopic mechanism, and the lower end of the middle plate is fixedly connected with the longitudinal telescopic mechanism; the sand paving device comprises a first paving plate, a second paving plate, a sand paving surface, a printing head and a printing head.

Preferably, the sand hole baffle comprises a longitudinal plate and a transverse plate, the longitudinal plate is fixed on one side of the movable sand paving body, the transverse plate is fixedly installed at the lower end of the longitudinal plate, a telescopic rod is arranged on one side of the transverse plate, and the front end of the telescopic rod penetrates through the interior of the transverse plate and extends to the other end of the transverse plate; the sand spreading area of the movable sand spreading body is controlled through the longitudinal plates and the transverse plates of the sand hole baffle plates, and redundant raw sand is collected in the sand spreading process.

Preferably, the transverse plates comprise a first transverse plate, a second transverse plate and a third transverse plate, the first transverse plate is connected with the second transverse plate in a sliding mode, the third transverse plate is connected with the second transverse plate in a sliding mode, one side of the inner portion of the first transverse plate is fixedly connected with the front end of the telescopic rod, and the third transverse plate is connected with the other end of the telescopic rod; the first transverse plate, the second transverse plate and the third transverse plate on the transverse plates are arranged, so that the sand laying amount and area can be controlled according to different printing programs, the number of the sand leaking holes at the lower end of the movable sand laying body is reduced, the sand leaking area and amount can be controlled, and the original sand amount can be controlled while the printing quality is not changed.

Preferably, a plurality of leakage holes are formed in the upper end surfaces of the first transverse plate, the second transverse plate and the third transverse plate, the leakage holes correspond to the sand paving holes, an arc-shaped groove is formed in the lower end of each leakage hole, the arc-shaped groove extends to one side of the third transverse plate, and a sand suction pipe is arranged on one side of the arc-shaped groove; in the sliding connection process between the first transverse plate and the second transverse plate and between the first transverse plate and the third transverse plate, in order to guarantee smooth running of recovered sand, the arc-shaped groove is arranged to collect raw sand through the leakage hole and enter the arc-shaped groove, and the collection of the raw sand is completed through the sand suction pipe at the rear end of the arc-shaped groove.

Preferably, the arc-shaped groove is a flexible telescopic groove.

Preferably, the limiting device comprises an X-coordinate limiting device and a Y-coordinate limiting device, the X-coordinate limiting device is mounted on the movable sand laying body, the Y-coordinate limiting device is mounted on the sand leaking seat at the upper end of the movable sand laying body, and the Y-coordinate limiting device controls the longitudinal sand leaking position of the sand leaking seat; the X coordinate limit and the Y coordinate limit are used for calculating the maximum cross-sectional area according to the input workpiece model; the areas of sand leakage and sand laying are controlled, the area of the original sand for laying sand is controlled in advance, and the sand consumption is calculated in advance, so that the high sand consumption is ensured.

The use method of the 3D sand mold printing device capable of flexibly changing the sanding breadth comprises the following steps:

s1: carrying out sand laying operation according to a program, wherein the movable sand laying body moves to lay sand, the X coordinate is controlled according to the size of a printed part to limit and control the transverse sand laying interval of the movable sand laying body, the Y coordinate is controlled to limit and control the longitudinal sand leaking distance of the upper end of the sand leaking seat, and the maximum cross-sectional area of the printed part is calculated to control the sand leaking amount and the sand laying area;

s2: when the flat plate mechanism is used for carrying the sand paving operation of the movable sand paving body, sand paving is carried out through the sand paving area calculated in the step S1, the angle of one of the first plate or the second plate is adjusted through the sand paving area in the sand paving process, the angle of one of the first plate or the third plate which is not used is adjusted to enable the first plate or the third plate to be inclined to the middle plate, leaked sand falling on the middle plate falls along the inclined angle for collection, and waste of the sand is reduced;

s3: in the sand paving 3D printing process, the sand hole baffle is used for controlling the sand leakage amount and the sand leakage area in the sand paving process, the sand leakage amount is controlled through the first transverse plate, the second transverse plate and the third transverse plate on the transverse plates on the sand leakage baffle, and meanwhile, redundant sand is collected through the sand leakage holes. And recovering the redundant sand grains while finishing printing.

Compared with the prior art, the invention has the beneficial effects that:

1. can accomplish the control to the sanding area through spreading husky device and flat mechanism, to the waste of former sand when controlling to spread husky through controlling to spread husky area, when reducing to spread husky area, collect unnecessary former sand through spreading husky board, be convenient for retrieve the former sand, stop device can accomplish to spreading the sand face and remove the sand leakage area control of the body of spreading sand, and what sprinkle is spread to former sand is accomplished in advance through calculating.

2. The sand paving device comprises a first paving plate, a second paving plate, a sand paving surface, a printing head and a printing head.

3. The sand spreading area of the movable sand spreading body is controlled through the longitudinal plates and the transverse plates of the sand hole baffle plates, and redundant raw sand is collected in the sand spreading process.

4. The first transverse plate, the second transverse plate and the third transverse plate on the transverse plates are arranged, so that the sand laying amount and area can be controlled according to different printing programs, the number of the sand leaking holes at the lower end of the movable sand laying body is reduced, the sand leaking area and amount can be controlled, and the original sand amount can be controlled while the printing quality is not changed.

5. The X coordinate limit and the Y coordinate limit are used for calculating the maximum cross-sectional area according to the input workpiece model; the areas of sand leakage and sand laying are controlled, the area of the original sand for laying sand is controlled in advance, and the sand consumption is calculated in advance, so that the high sand consumption is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a 3D sand mold printing device for flexibly changing a sanding breadth according to the present invention.

Fig. 2 is a schematic structural diagram of the flat plate mechanism of the present invention.

Fig. 3 is a schematic view of the structure of the sand hole baffle of the present invention.

FIG. 4 is a schematic view of the structure of the sand-laying hole of the present invention.

FIG. 5 is a schematic view of the structure of the sand suction pipe and the telescopic rod according to the present invention.

Reference numerals: 1. the sand spreading device comprises a sand spreading device 2, a flat plate mechanism 3, a sand spreading seat 4, an automatic sand spreading body 5, a sand leaking mechanism 6, a sand spreading hole 7, a sand hole baffle 8, a sand spreading plate 9, a longitudinal telescopic mechanism 10, a printing base 11, a transverse telescopic mechanism 12, a limiting device 13, a first spreading plate 14, a second spreading plate 15, a middle plate 16, a longitudinal plate 17, a transverse plate 18, a telescopic rod 19, a first transverse plate 20, a second transverse plate 21, a third transverse plate 22, a leaking hole 23, an arc-shaped groove 24, a sand sucking pipe 25, X coordinate limiting 26, Y coordinate limiting 27 and a sand leaking seat.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

A3D sand mould printing device capable of flexibly changing the breadth of sand laying comprises a sand laying device 1 and a flat plate mechanism 2, wherein the flat plate mechanism 2 is installed below the sand laying device 1, the sand laying device 1 comprises a sand laying seat 3, a movable sand laying body 4 is installed on the sand laying seat 3, a sand leaking mechanism 5 is installed on the movable sand laying body 4, the sand leaking mechanism 5 is installed on a support of the movable sand laying body 4, a sand laying hole 6 is installed on the lower side of the sand leaking mechanism 5, a sand hole baffle 7 is installed on one side of the sand laying hole 6, the sand hole baffle 7 is connected to one side of the movable sand laying body 4 in a sliding mode, the flat plate mechanism 2 comprises a sand laying plate 8, a longitudinal telescopic mechanism 9 is arranged at the lower end of the sand laying plate 8, the longitudinal telescopic mechanism 9 is installed on a printing base 10, a transverse telescopic mechanism 11 is arranged on one side of the upper end of the longitudinal telescopic mechanism 9, one end of the transverse telescopic mechanism 11 is fixed to one side of the lower, the other end of the transverse telescopic mechanism 11 is arranged at the other side of the sand laying plate 8, and the movable sand laying body 4 is provided with a limiting device 12; can accomplish the control to the sanding area through spreading husky device 1 and flat mechanism 2, to the waste of former sand when controlling to spread husky through controlling the sanding area, when reducing the sanding area, collect unnecessary former sand through spreading husky board 8, be convenient for retrieve the former sand, stop device 12 can accomplish to the face of spreading the sand removal and spread husky body area control that leaks, accomplish in advance to the former sand shop sprinkle through calculating.

The sand paving plate 8 comprises a first paving plate 13, a second paving plate 14 and a middle plate 15, one side of the first paving plate 13 is movably connected with one side of the middle plate 15, the lower end of the first paving plate 13 is connected with one end of the transverse telescopic mechanism 11, the lower end of the second paving plate 14 is movably connected with the other end of the transverse telescopic mechanism 11, and the lower end of the middle plate 15 is fixedly connected with the longitudinal telescopic mechanism 9; the sand paving position used for controlling the sand paving plate 8 through the first paving plate 13 and the second paving plate 14 can be used for changing the sand paving amount through the sand paving surface, meanwhile, the raw sand can be collected according to the inclination angles of the first paving plate 13 and the second paving plate 14, the inclination of the first paving plate 13 or the second paving plate 14 is controlled according to the printing size, when the first paving plate 13 is needed to work, the second paving plate 14 is not needed to be inclined, and vice versa, and the waste of the raw sand is reduced through a flexible and changeable process.

The sand hole baffle 7 comprises a longitudinal plate 16 and a transverse plate 17, the longitudinal plate 16 is fixed on one side of the movable sand laying body 4, the transverse plate 17 is fixedly installed at the lower end of the longitudinal plate 16, a telescopic rod 18 is arranged on one side of the transverse plate 17, and the front end of the telescopic rod 18 penetrates through the inside of the transverse plate 17 and extends to the other end of the transverse plate 17; the sand paving area of the movable sand paving body 4 is controlled through the longitudinal plates 16 and the transverse plates 17 of the sand hole baffle 7, and the collection of redundant raw sand in the sand paving process is reduced.

The transverse plates 17 comprise a first transverse plate 19, a second transverse plate 20 and a third transverse plate 21, the first transverse plate 19 is connected with the second transverse plate 20 in a sliding mode, the third transverse plate 21 is connected with the second transverse plate 20 in a sliding mode, one side of the inner portion of the first transverse plate 19 is fixedly connected with the front end of the telescopic rod 18, and the third transverse plate 21 is connected with the other end of the telescopic rod 18; the first transverse plate 19, the second transverse plate 20 and the third transverse plate 21 on the transverse plate 17 can control the sand laying amount and area according to different printing programs, so that the sand leaking area and amount can be controlled by reducing the number of the sand leaking holes at the lower end of the movable sand laying body 4, and the original sand amount can be controlled without changing the printing quality.

A plurality of leaking holes 22 are formed in the upper end surfaces of the first transverse plate 19, the second transverse plate 20 and the third transverse plate 21, the leaking holes 22 are arranged corresponding to the sand paving holes 6, an arc-shaped groove 23 is formed in the lower end of each leaking hole 22, the arc-shaped groove 23 extends to one side of the third transverse plate 21, and a sand sucking pipe 24 is arranged on one side of the arc-shaped groove 23; in the sliding connection process between the first transverse plate 19 and the second transverse plate 20 and the third transverse plate 21, in order to ensure smooth sand recovery, the arc-shaped groove 23 is arranged to collect the raw sand through the leak hole 22 and enter the arc-shaped groove 23, and the collection of the raw sand is completed through the sand suction pipe 24 at the rear end of the arc-shaped groove 23.

The arc-shaped groove 23 is a flexible groove.

The limiting device 12 comprises an X-coordinate limiting device 25 and a Y-coordinate limiting device 26, the X-coordinate limiting device 25 is installed on the movable sand laying body 4, the Y-coordinate limiting device 26 is installed on a sand leaking seat 27 at the upper end of the movable sand laying body 4, and the Y-coordinate limiting device 26 controls the longitudinal sand leaking position of the sand leaking seat 27; the X coordinate limit 25 and the Y coordinate limit 26 are used to calculate the maximum cross-sectional area based on the input workpiece model; the areas of sand leakage and sand laying are controlled, the area of the original sand for laying sand is controlled in advance, and the sand consumption is calculated in advance, so that the high sand consumption is ensured.

The use method of the 3D sand mold printing device capable of flexibly changing the sanding breadth comprises the following steps:

s1: carrying out sand laying operation according to a program, wherein the movable sand laying body 4 moves to lay sand, the X coordinate limit 25 is controlled according to the size of a printed part to control the transverse sand laying distance of the movable sand laying body 4, the Y coordinate limit 26 controls the longitudinal sand leaking distance of the upper end of the sand leaking seat 27, and the sand leaking amount and the sand laying area are controlled by calculating the maximum cross section area of the printed part;

s2: during the sand paving operation for receiving the movable sand paving body 4 through the flat plate mechanism 2, sand paving is carried out through the sand paving area calculated in the step S1, the angle of one of the first paving plate 13 or the second paving plate 14 is adjusted through the sand paving area in the sand paving process, the angle of one of the first paving plate 13 or the second paving plate 14 which is not used is adjusted to be inclined to the middle plate 15, and leaked sand falling on the top is collected along the inclined angle, so that the waste of the sand is reduced;

s3: in the process of sand paving 3D printing, the sand hole baffle 7 is used for controlling the amount and the area of sand leakage in the sand paving process, the amount of the sand leakage is controlled through the first transverse plate 19, the second transverse plate 20 and the third transverse plate 21 on the transverse plates on the sand hole baffle 7, and meanwhile, redundant sand is collected through the leakage holes 22. And recovering the redundant sand grains while finishing printing.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions are considered to be within the protective scope of the present invention.