A multi-functional printing device

Abstract

This application relates to a multifunctional printing device, including an overall frame, a work box assembly, and a hoisting device. The overall frame is equipped with a powder spreader and a print head. The hoisting device is mounted on the overall frame and is used to hoist the cured sand core out of the device after printing. The work box assembly includes a printing work box and an annular sand collecting mechanism. The annular sand collecting mechanism is arranged around the periphery of the printing work box to collect the molding sand scattered during the sand cleaning process. Both the overall frame and the work box assembly are movable. This solution can solve the problems of low efficiency, serious dust pollution, and reliance on manual intervention in the sand cleaning process of existing 3DP sand core printers.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing equipment technology, and in particular to a multifunctional printing device. Background Technology

[0002] Currently, the work box of 3DP sand core printers generally adopts a structure combining a movable base plate and side plates, with the movable base plate achieving Z-axis printing via a lifting mechanism. After the sand core is printed, the entire work box needs to be removed from the equipment and transported to a dedicated sand cleaning station. During the sand cleaning process, the base plate is slowly lifted to allow the molding sand to flow naturally under gravity or be discharged with the assistance of manual intervention. After the sand core has solidified to the specified hardness, it is then transferred to the finished product area using hoisting equipment.

[0003] The process has the following areas for optimization: First, the overall transport of the molding sand box requires additional logistics equipment, increasing the complexity and time cost of the process; second, the sand cleaning process relies on natural flow or manual cleaning, which is inefficient and poses a risk of dust pollution; third, the separation of the sand core solidification and sand cleaning processes prolongs the production cycle. In addition, the existing molding sand box structure does not adequately consider the flow characteristics of molding sand, which can easily lead to problems such as incomplete sand cleaning or damage to the sand core. Utility Model Content

[0004] Therefore, it is necessary to provide a multi-functional printing device to address the problems of low efficiency, serious dust pollution, and reliance on manual intervention in the working box cleaning process of existing 3DP sand core printers.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a multifunctional printing device, including an overall frame, a work box assembly, and a hoisting device. The overall frame is equipped with a powder spreader and a print head. The hoisting device is mounted on the overall frame and is used to hoist the solidified sand core out of the device after printing. The work box assembly includes a printing work box and an annular sand receiving mechanism. The annular sand receiving mechanism is arranged around the periphery of the printing work box and is used to collect the molding sand scattered during the sand cleaning process. Both the overall frame and the work box assembly are movable.

[0007] In one embodiment, there are multiple workbox components. After printing is completed, the current workbox component is moved to the sand cleaning station for sand cleaning, and the overall frame is moved to another workbox component to continue the printing operation.

[0008] In one embodiment, the annular sand receiving mechanism includes a short-side sand receiving hopper and a long-side sand receiving hopper, which are arranged around the periphery of the printing work box.

[0009] In one embodiment, a loose sand conveying mechanism is connected below the annular sand receiving mechanism for recycling the loose sand collected by the annular sand receiving mechanism to the sand treatment system.

[0010] In one embodiment, the loose sand conveying mechanism includes a screw conveyor, a sand dispenser, or a belt conveyor.

[0011] In one embodiment, the hoisting device integrates a sand blowing mechanism for cleaning residual sand particles from the surface of the sand core.

[0012] In one embodiment, the overall frame moves via linear guides to switch the workstations of different workbox components.

[0013] In one embodiment, the printing workbox is equipped with a vibration-assisted sand-cleaning device to promote the separation of the sand core from the loose sand during the lifting process.

[0014] In one embodiment, a position sensor is provided on the overall frame for detecting the positioning status of the work box assembly.

[0015] In one embodiment, the hoisting device is equipped with a visual recognition module, which is used for automatic positioning and grasping of sand cores.

[0016] The technical solution adopted in this utility model can achieve the following beneficial effects:

[0017] The multifunctional printing device disclosed in this embodiment of the invention achieves a high degree of integration of printing, sand cleaning, and sand recycling processes through a movable overall frame and multi-workbox component design, reducing the equipment's footprint. The parallel operation mode allows printing and sand cleaning processes to be performed simultaneously, improving production efficiency. The annular sand receiving mechanism and built-in sand treatment system enable automatic recycling and reuse of molding sand, improving material utilization. The hoisting device effectively reduces manual intervention. The modular design allows for flexible adjustment of the number of workboxes according to production needs, greatly enhancing the equipment's adaptability and economy. This equipment significantly reduces production costs and energy consumption while ensuring printing quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the multifunctional printing device disclosed in the embodiments of this utility model;

[0019] Figure 2 for Figure 1 A structural diagram from another perspective.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100-Integral frame, 200-Work box assembly, 210-Printing work box, 220-Annular sand receiving mechanism, 300-Lifting device. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0023] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figures 1-2 As shown in the figure, this utility model embodiment discloses a multi-functional printing device, which includes an overall frame 100, a work box assembly 200, and a hoisting device 300.

[0026] The overall frame 100 serves as the main structure supporting the equipment and includes a powder spreader and a print head. The print head is driven by a crossbeam to move along the X / Y axes, enabling layer-by-layer printing of the sand core. A linear guide or rotating mechanism can be installed at the bottom of the overall frame 100, allowing it to move along a preset track and switch between different work box components 200.

[0027] The hoisting device 300 is mounted on the overall frame 100 and is used to hoist the cured sand core out of the equipment after printing. Specifically, the hoisting device 300 is installed on the top of the overall frame and is equipped with a gripping mechanism (such as a robotic arm or electromagnetic chuck) to hoist the cured sand core out of the equipment.

[0028] The work box assembly 200 includes a printing work box 210 and an annular sand receiving mechanism 220. The printing work box 210 is used to hold molding sand and printing sand cores, and its bottom is equipped with a lifting mechanism (such as a hydraulic cylinder or electric push rod) to lift the bottom plate after printing, allowing the sand core to detach from the box. The annular sand receiving mechanism 220 is arranged around the periphery of the work box to collect molding sand that spills during the sand core lifting process. Both the overall frame 100 and the work box assembly 200 are movable.

[0029] During the actual printing process, the print head sprays adhesive layer by layer inside the printing chamber to form a sand core structure. After printing, the printing chamber assembly is moved to the sand removal station, the lifting mechanism lifts the base plate, the sand core is demolded, and the loose sand falls into the annular sand collecting mechanism for recycling. The hoisting device grabs the sand core and moves it to the subsequent processing area, while the frame moves to the next printing chamber to continue printing, achieving parallel operation.

[0030] As can be seen from the above, the multifunctional printing equipment disclosed in this utility model embodiment achieves a high degree of integration of printing, sand cleaning, and sand recycling processes through a movable overall frame and multi-workbox component design, reducing the equipment's footprint; the parallel operation mode allows printing and sand cleaning processes to be carried out simultaneously, improving production efficiency; the annular sand receiving mechanism and built-in sand treatment system realize automatic recycling and reuse of molding sand, improving material utilization; the hoisting device effectively reduces the intensity of manual intervention; the modular design allows the equipment to flexibly adjust the number of workboxes according to production needs, greatly enhancing the equipment's adaptability and economy. This equipment significantly reduces production costs and energy consumption while ensuring printing quality.

[0031] In this embodiment of the invention, there can be multiple workbox components 200. After printing is completed, the current workbox component 200 moves to the sand-cleaning station for sand removal, while the overall frame 100 moves to another workbox component 200 to continue printing. In this case, by setting multiple independently movable workbox components 200, parallel operation of printing and sand removal processes is achieved. The rotating working mode allows printing and sand removal to be performed synchronously, eliminating the waiting time in traditional processes. Continuous production is achieved through intelligent scheduling of workbox components. The modular design allows the number of workboxes to be flexibly increased or decreased according to production needs, meeting both the requirements of large-volume continuous production and adapting to flexible small-batch, multi-variety production. The equipment space layout is optimized, eliminating the need for independent sand removal stations and transfer equipment in traditional production lines.

[0032] Furthermore, the annular sand receiving mechanism 220 may include a short-side sand receiving hopper and a long-side sand receiving hopper, which are arranged around the periphery of the printing work box 210. In this case, the dual-hopper design achieves comprehensive, all-around collection of scattered molding sand; simultaneously, the coordinated arrangement of the long and short hoppers effectively adapts to the sand cleaning needs of sand cores of different sizes, ensuring that scattered sand falls accurately into the sand receiving device during demolding of various sand cores; furthermore, the surrounding structure of the sand receiving hopper greatly reduces sand splashing during the sand cleaning process.

[0033] In one optional embodiment, a loose sand conveying mechanism can be connected below the annular sand receiving mechanism 220 to recycle the loose sand collected by the annular sand receiving mechanism 220 to the sand treatment system. This method constructs a complete automatic sand recycling system, enabling the loose sand collected during the sand cleaning process to be transported to the sand treatment system in real time and efficiently; the closed conveying design effectively avoids secondary dust generation during the traditional manual sand cleaning process; and the seamless connection between the conveying mechanism and the sand treatment system enables the immediate recycling of molding sand.

[0034] In the embodiments disclosed in this utility model, the bulk sand conveying mechanism may include a screw conveyor, a sand dispenser, or a belt conveyor. This application does not impose specific limitations in this regard.

[0035] Optionally, a sand blowing mechanism is integrated into the hoisting device 300. This mechanism is used to clean residual sand particles from the surface of the sand core. By directly integrating the sand blowing mechanism into the hoisting device, the sand core handling and surface cleaning are synchronized, reducing the need for transfer to a dedicated cleaning station in traditional processes and significantly improving production efficiency. The sand blowing mechanism removes residual sand particles during hoisting, avoiding the risk of surface wear caused by accumulation during transport and improving the dimensional stability of critical parts of the sand core (such as the casting surface and positioning holes).

[0036] Optionally, the overall frame 100 can move via linear guide rails to switch the workstations of different workbox components 200.

[0037] Furthermore, a vibration-assisted sand-cleaning device is installed inside the printing workbox 210 to promote the separation of the sand core from loose sand during the lifting process. This design, by integrating the vibration-assisted sand-cleaning device into the printing workbox 210, effectively breaks down the adhesion between the sand core and loose sand particles through high-frequency micro-vibration during lifting, thus improving separation efficiency. Compared to traditional air-blowing methods, vibration sand-cleaning reduces the risk of damage to the thin structure of the sand core, while the vibration energy acts directly on the interior of the sand mass, avoiding dust diffusion problems.

[0038] Furthermore, a position sensor is installed on the overall frame 100 to detect the positioning status of the work box assembly 200. The position sensor (which can be a high-precision magnetic grating or laser rangefinder type) installed on the overall frame 100 enables real-time positioning detection of the work box assembly 200. This design solves the problem of cumulative error during multi-station collaborative operation, improving the success rate of docking between the printing platform and the cleaning station.

[0039] Furthermore, the hoisting device 300 is equipped with a vision recognition module, which is used for automatic positioning and grasping of sand cores. The vision recognition module configured in the hoisting device 300 can achieve six-degree-of-freedom positioning of the sand core through feature matching algorithms, and can adapt to complex working conditions such as sand core deformation and surface defects.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-functional printing device, characterized in that, The system includes an overall frame (100), a work box assembly (200), and a hoisting device (300). The overall frame (100) is equipped with a powder spreader and a print head. The hoisting device (300) is mounted on the overall frame (100) and is used to hoist the solidified sand core out of the equipment after printing. The work box assembly (200) includes a printing work box (210) and an annular sand receiving mechanism (220). The annular sand receiving mechanism (220) is arranged around the periphery of the printing work box (210) and is used to collect the molding sand scattered during the sand cleaning process. Both the overall frame (100) and the work box assembly (200) are movable.

2. The multifunctional printing device according to claim 1, characterized in that, There are multiple work box assemblies (200). After printing is completed, the current work box assembly (200) is moved to the sand cleaning station for sand cleaning, and the overall frame (100) is moved to another work box assembly (200) to continue the printing operation.

3. The multifunctional printing device according to claim 1, characterized in that, The annular sand receiving mechanism (220) includes a short-side sand receiving hopper and a long-side sand receiving hopper, which are arranged around the periphery of the printing work box (210).

4. The multifunctional printing device according to claim 3, characterized in that, The annular sand receiving mechanism (220) is connected to a loose sand conveying mechanism below, which is used to recover the loose sand collected by the annular sand receiving mechanism (220) to the sand treatment system.

5. The multifunctional printing device according to claim 4, characterized in that, The loose sand conveying mechanism includes a screw conveyor, a sand generator, or a belt conveyor.

6. The multifunctional printing device according to claim 1, characterized in that, The hoisting device (300) integrates a sand blowing mechanism, which is used to clean residual sand particles on the surface of the sand core.

7. The multifunctional printing device according to claim 1, characterized in that, The overall frame (100) moves via linear guide rails to switch the workstations of different workbox components (200).

8. The multifunctional printing device according to claim 1, characterized in that, The printing work box (210) is equipped with a vibration-assisted sand cleaning device, which is used to promote the separation of the sand core and loose sand during the lifting process.

9. The multifunctional printing device according to claim 1, characterized in that, A position sensor is provided on the overall frame (100) for detecting the positioning status of the work box assembly (200).

10. The multifunctional printing device according to claim 1, characterized in that, The hoisting device (300) is equipped with a visual recognition module, which is used for automatic positioning and grabbing of sand cores.

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