A composite cleaning device for a sand spreader

Abstract

The utility model relates to sand type 3D printer field, and specifically disclose a kind of compound cleaning device of sand spreader, the device includes linear motion component and at least one telescopic cleaning component;Wherein, the linear motion component can drive the telescopic cleaning component move in the length direction of the sand spreader of sand spreader plate;The telescopic cleaning component is cleaned to the sanding plate and sand outlet of sand spreader by telescopic realization.This device provided by the utility model can clean sanding plate and sand outlet simultaneously, even if sand lumping when mixing curing agent, block sand outlet, sand outlet cleaning strip can also break lump, ensure the uniformity of sanding, effectively avoid sand surface uneven problem, improve sand type printing yield.

Description

Technical Field

[0001] This utility model relates to the field of sand mold 3D printers, specifically to a composite cleaning device for a sand spreader. Background Technology

[0002] Currently, timely application of cleaning methods in the 3D printing process is crucial. If foreign objects adhere to the scraper during printing, these objects may damage the sand surface and create grooves during the operation of the sand spreader. If the sand outlet is blocked by foreign objects or sand clumps during cleaning, it will cause a series of problems such as the sand spreader not dispensing sand or dispensing sand unevenly. Both grooves and the problem of not dispensing sand will seriously affect the production and operation of the sand mold 3D printer, resulting in the production of unqualified waste products or even causing malfunctions or damage to the 3D printer itself.

[0003] Therefore, the cleaning devices for sand spreaders commonly used in existing 3D printing equipment can be mainly divided into two types. The first type uses a large roller brush for cleaning, but the brush can only clean the scraper plate and cannot clean the sand clumps at the sand outlet. The second type uses a felt for cleaning, but this setting can also only clean the scraper plate and cannot clean the sand clumps at the sand outlet. In addition, the cleaning felt needs to be replaced frequently, which increases material and time costs. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a composite cleaning device for a sand spreader with a bidirectional sand spreading scraper and a sand outlet. This device can effectively remove foreign objects that may adhere to the scraper and solve the problem of blockage caused by sand agglomeration at the sand outlet, ensuring normal production operation and improving production efficiency and sand mold printing yield.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A composite cleaning device for a sand spreader mainly includes: a linear motion component and at least one telescopic cleaning component. The linear motion component drives the telescopic cleaning component to move along the length of the sand spreading plate of the sand spreader; the telescopic cleaning component cleans the scraper plate and the sand outlet of the sand spreader by extending and retracting. Preferably, the range of movement of the telescopic cleaning component driven by the linear motion component covers the entire length of the sand spreading plate and the sand outlet; alternatively, several sets of the composite cleaning device can be used to cover the entire length of the sand spreading plate and the sand outlet.

[0007] Furthermore, the telescopic cleaning assembly includes a cylinder, a scraper cleaning brush, and a lower sand inlet cleaning strip. The cylinder is mounted on a movable slide (via a mounting hole) provided by the linear motion assembly, providing telescopic power to the scraper cleaning brush and the lower sand inlet cleaning strip. This allows for different cleaning height requirements of the scraper and lower sand inlet for different sand spreaders, ensuring the scraper cleaning brush contacts the main / auxiliary scraper and the lower sand inlet cleaning strip extends into the lower sand inlet. Preferably, the cylinder adjusts the initial installation height of the scraper cleaning brush and the lower sand inlet cleaning strip via a narrow mounting hole, ensuring a more stable and effective fit to the target for cleaning. Preferably, the lower sand inlet cleaning strip is made of a flexible material, allowing it to extend (deeply) into the lower sand inlet to break up clumps formed by the mixing of sand particles and hardening agent, ensuring unobstructed flow in the lower sand inlet.

[0008] Furthermore, specifically for the cleaning target of the bidirectional sand spreading machine, since it is equipped with two main and auxiliary scraping plates on both sides of the sand outlet, the scraping plate cleaning brushes are preferably set in two sets, located on both sides of the sand outlet cleaning strip, and provide cleaning for the main and auxiliary scraping plates of the bidirectional sand spreading scraping machine.

[0009] Furthermore, considering the length of the sand spreader in practical applications, the composite cleaning device is preferably equipped with 1-6 telescopic cleaning components (arranged at equal intervals and evenly), so that all telescopic cleaning components have a total travel of 200-4000mm (i.e., the total length of the scraper blade set according to the printing area of ​​the equipment).

[0010] Furthermore, the linear motion assembly includes a motor, a transmission assembly, a guide rail, and at least one slide. The motor provides driving force to the transmission assembly, causing it to slide the slide along the guide rail, thereby moving the telescopic cleaning assembly mounted on the slide along the length of the sand spreader. Preferably, the guide rail (and its base) and the transmission assembly are arranged along the length of the sand spreader, preferably covering its entire length (or longer), thus providing a total stroke for the telescopic cleaning assembly for cleaning. Preferably, the upper part of the slide provides a moving platform for the telescopic cleaning assembly, while the lower part connects to a point of the transmission assembly to follow the movement, and also has a sliding surface that cooperates with the guide rail to achieve driven sliding along the guide rail.

[0011] Furthermore, the transmission assembly is preferably a synchronous belt assembly, including a synchronous pulley, a synchronous belt, and a synchronous belt clamp. The synchronous belt clamp is fixed at an appropriate position on the synchronous belt and is used to connect to and drive the slide; the synchronous pulley is preferably located at both ends of the guide rail and is used to engage with the synchronous belt (by rotation) to drive the movement of the slide. Preferably, by fixing the synchronous belt clamp at an appropriate position on the synchronous belt, the telescopic cleaning components are evenly distributed along the synchronous belt to achieve cleaning along the entire length of the sand spreader.

[0012] Furthermore, the composite cleaning device also includes a flexible dust cover to prevent sand or grit from falling during cleaning from affecting the normal operation of the device. This flexible dust cover is disposed between the telescopic cleaning components and between the telescopic cleaning components and the ends of the composite cleaning device. The flexible dust cover is fitted to the edge of the sliding table connected to the telescopic cleaning components and the ends, and is flexible enough to extend and retract as the sliding table moves. Preferably, the flexible dust cover is an accordion-style protective cover.

[0013] Furthermore, the composite cleaning device also includes a dustproof plate installed between the base of the slide table and the guide rail. The dustproof plate moves along the guide rail with the slide table to block the gap between the two. When the brush cleaning scraper and the lower sand inlet cleaning strip break up sand blocks, foreign objects or sand blocks may fall off. In particular, sand blocks mixed with hardener are highly corrosive. The accordion-style protective cover can effectively protect the linear motion components and extend their service life.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention utilizes a telescopic cylinder to drive a cleaning brush on the scraper plate, which then contacts the scraper plate and extends into the sand outlet. A linear motion component moves the cleaning brush and the sand outlet cleaning strip from one end of the sand outlet to the other, using a single sand outlet to clean the entire scraper plate and sand outlet. Compared to the large roller brush cleaning device used in the first type of brush-type sand spreader cleaning device described in the background art, this invention can break up and clean the sand at the sand outlet. Compared to the second type using felt cleaning, it can not only clean the sand clumps on the scraper plate and sand outlet, but also eliminates the need for frequent felt replacement. This solves the problems that black substances may damage the sand surface, creating grooves, and that the sand outlet may become clogged due to foreign objects or sand clumps during cleaning, leading to problems such as the sand spreader not discharging sand or uneven sand discharging. Simultaneously, it improves production efficiency and sand mold printing yield. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an example of a composite cleaning device for a sand spreader according to the present invention.

[0017] Figure 2 for Figure 1 The diagram shows a linear motion component in an example of a composite cleaning device for a sand spreader according to the present invention.

[0018] Figure 3 for Figure 1 The image shown is an enlarged view of the telescopic cleaning component in an example of a composite cleaning device for a sand spreader according to the present invention.

[0019] Figure 4 for Figure 1The diagram shows a telescopic cleaning component in an example of a composite cleaning device for a sand spreader according to the present invention.

[0020] Figure 5 for Figure 1 The diagram shows the usage state of the telescopic cleaning component (partial) extending into the lower sand inlet in an example of a composite cleaning device for a sand spreader according to this utility model.

[0021] In the diagram: 1-Linear motion component; 11-Guide rail base; 12-Synchronous pulley; 13-Synchronous belt; 14-Synchronous belt clamp; 15-Slide table; 16-Guide rail; 2-Telescopic cylinder; 21-Narrow mounting hole; 3-Sand scraper cleaning brush; 4-Sand outlet cleaning strip; 5-Motor; 6-Bellboard-style protective cover; 7-Dustproof plate; 8-Sand outlet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The core of this utility model is to provide a composite cleaning device for a sand spreader. Specifically, in this example, this utility model provides a composite cleaning device for a sand spreader with a bidirectional sand spreading scraper and a sand outlet 8. When in use, the device uses a telescopic cylinder 2 to drive the scraper cleaning brush 3 to contact the scraper and the sand outlet cleaning strip 4 to extend into the sand outlet 8, which can clean the black substance under the scraper and break up the sand clumps in the sand outlet 8.

[0024] Specifically, such as Figure 1-3 As shown in the embodiment of this utility model, a composite cleaning device for a sand spreader includes a linear motion component 1, two telescopic cleaning components, an accordion-style protective cover 6, and a dustproof plate 7.

[0025] Among them, see Figure 3-5 The telescopic cleaning assembly includes a telescopic cylinder 2, a scraper cleaning brush 3, and a lower cleaning strip 4. See [link to details regarding connection methods] for details. Figure 4 The cross-sectional view shown illustrates how the sand-scraping cleaning brush 3 and the sand-drain cleaning strip 4 are mounted on the upper part of the telescopic motor 2 via the narrow mounting hole 21, and their initial height is adjusted. The two sand-scraping cleaning brushes 3 are located on either side of the sand-drain cleaning strip 4, respectively serving the main and auxiliary sand-scraping blades for bidirectional sand spreading and the sand-drain 8 (see...). Figure 5 The material of the scraper cleaning brush 3 should be nylon or pig bristles of moderate hardness. The cleaning strip 4 of the lower sanding opening should be made of flexible material and can extend into the lower sanding opening 8 (see...). Figure 5It utilizes its suitable elasticity and strength to break up and remove the clumps formed by the mixing of sand particles and curing agent through friction.

[0026] See Figure 2 The linear motion assembly 1 includes a motor 5, a synchronous belt assembly, a slide table 15, and a guide rail 16. During operation, the motor 5 drives the synchronous belt pulley 12 to rotate. The rotation of the synchronous belt pulley 12 moves the synchronous belt 13, which in turn moves the slide table 15 linearly via the synchronous belt clamp 14 mounted on the synchronous belt 13. The slide table 15 is mounted on the guide rail 16, which reduces friction during its movement, extends its service life, and ensures the straightness of its movement. A telescopic cylinder 2 is fixed on the slide table 15.

[0027] See Figure 3 The accordion-style protective cover 6 is installed between the slides 15 on the linear motion assembly 1 and between the ends of the slides 15 and the guide rail base 11. The gaps between the accordion-style protective covers 6 are blocked by the dustproof plate 7 set between the slides 15 and the guide rail base 11. When the scraper cleaning brush 3 cleans the scraper and the lower sand outlet cleaning strip 4 to break the sand, foreign objects or sand blocks will fall down. In particular, the sand blocks mixed with the curing agent are highly corrosive. The accordion-style protective cover 6 and the dustproof plate 7 can effectively protect the linear motion assembly and extend its service life.

[0028] The working principle of this utility model device is as follows: the telescopic cylinder 2 drives the scraper cleaning brush 3 to contact the scraper and the sand outlet cleaning strip 4 to extend into the sand outlet 8. The linear motion component 1 drives the scraper cleaning brush 3 and the sand outlet cleaning strip 4 to move from one end of the sand outlet 8 to the other end, thereby cleaning the entire main / auxiliary scraper and the sand outlet 8. This solves a series of problems such as the sand outlet 8 being blocked by foreign objects or sand clumps during the cleaning process, resulting in the sand spreader not discharging sand or the sand discharging being uneven.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the utility model is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made based on the technical solution and inventive concept of the present utility model within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

[0030] It should be understood that the directional indicators such as "upper" and "lower" mentioned in this document are based on the orientation of the device shown in the example figure. It should also be understood that the terms "upper" and "lower" are interchangeable in this invention and do not constitute a substantial limitation on the invention.

Claims

1. A composite cleaning device for a sand spreader, characterized in that, The device includes: a linear motion component and at least one telescopic cleaning component; wherein, the linear motion component can drive the telescopic cleaning component to move along the length of the sand-spreading plate of the sand spreader; the telescopic cleaning component cleans the sand-scraping plate and the sand outlet of the sand spreader by telescopic movement.

2. The composite cleaning device for a sand spreader according to claim 1, characterized in that, The telescopic cleaning assembly includes a cylinder, a scraper cleaning brush, and a lower sanding port cleaning strip; wherein, the cylinder is mounted on a slide provided by the linear motion assembly and provides telescopic power for the scraper cleaning brush and the lower sanding port cleaning strip.

3. The composite cleaning device for a sand spreader according to claim 2, characterized in that, The cylinder adjusts the installation height of the scraper cleaning brush and the lower sand inlet cleaning strip through a narrow mounting hole.

4. The composite cleaning device for a sand spreader according to claim 2, characterized in that, The cleaning brushes for the sand scraper are in two sets, located on both sides of the cleaning strip at the lower sand inlet, and provide cleaning for the main and auxiliary sand scrapers of the bidirectional sand-laying scraper.

5. A composite cleaning device for a sand spreader according to any one of claims 1-4, characterized in that, The linear motion component includes a motor, a transmission component, a guide rail, and at least one slide; wherein the motor provides power to the transmission component, causing the transmission component to drive the slide to slide along the guide rail, thereby driving the telescopic cleaning component mounted on the slide.

6. The composite cleaning device for a sand spreader according to claim 5, characterized in that, The transmission assembly is a synchronous belt assembly, including a synchronous pulley, a synchronous belt, and a synchronous belt clamp; the synchronous belt clamp is fixed to the synchronous belt and is used to connect to and drive the slide table; the synchronous pulley is located at both ends of the guide rail and is used to cooperate with the synchronous belt to drive the movement of the slide table.

7. The composite cleaning device for a sand spreader according to claim 5, characterized in that, Configure 1-6 of the aforementioned telescopic cleaning components.

8. The composite cleaning device for a sand spreader according to claim 5, characterized in that, The composite cleaning device further includes an elastic dust cover; wherein the elastic dust cover is provided between the telescopic cleaning components and between the telescopic cleaning components and the ends of the composite cleaning device, and the elastic dust cover is provided to fit the edge of the slide and the ends and is elastic as the slide moves.

9. A composite cleaning device for a sand spreader according to claim 8, characterized in that, The elastic dust cover is an accordion-style protective cover.

10. A composite cleaning device for a sand spreader according to claim 8, characterized in that, The composite cleaning device also includes a dustproof plate disposed between the slide and the guide rail base to block gaps.

Images