A sand-type coating device

Abstract

This utility model relates to the field of sand mold coating technology, and provides a sand mold coating device, including: a placement platform; a three-axis linkage assembly mounted on the placement platform, wherein a nozzle is installed on the moving side of the three-axis linkage assembly, and the three-axis linkage assembly is used to drive the position movement of the nozzle; a discharge hopper installed on the discharge side of the placement platform; a filter assembly mounted on the discharge side of the discharge hopper, wherein the filter assembly is used to filter the returned material; and a combined assembly connecting the nozzle and the filter assembly, wherein the combined assembly is used for material storage, return, and conveying. The sand mold coating device provided by this solution solves the problems of nozzle clogging and system failure caused by the lack of a return assembly or the relatively simple return assembly in traditional devices, overcomes the defects of unstable material supply and low circulation efficiency, reduces maintenance frequency and downtime, and improves the automation level and reliability of the device.

Description

Technical Field

[0001] This utility model belongs to the field of sand-type coating technology, and in particular relates to a sand-type coating device. Background Technology

[0002] Sand mold coating refers to a process in which a special coating is evenly sprayed or brushed onto the surface of a casting sand mold. This process improves the surface quality of the sand mold by forming a protective layer, prevents molten metal from penetrating, improves the surface finish and dimensional accuracy of the castings, reduces casting defects, and enhances the overall quality and yield of the casting products.

[0003] However, existing sand-type coating devices, traditional spraying devices mostly use air pressure spray guns or atomizing nozzles. After the coating is sprayed out, it forms a spray of fine particles. These spray particles do not completely fall on the surface of the workpiece, but are scattered in the surrounding environment in large quantities, causing coating waste. As a result, the remaining spray and dripping coating are directly lost and cannot be effectively utilized. Utility Model Content

[0004] This utility model provides a sand mold coating device, which aims to solve the problem that existing sand mold coating devices, such as traditional spraying devices, mostly use air pressure spray guns or atomizing nozzles. After the coating is sprayed out, it forms a spray of fine particles. These spray particles do not completely fall on the surface of the sand mold, but are scattered in the surrounding environment in large quantities, causing coating waste and resulting in the direct loss of residual spray and dripping coating, which cannot be effectively utilized.

[0005] This utility model is implemented as follows: a sand-type coating device includes: a placement platform; a three-axis linkage assembly mounted on the placement platform, wherein a nozzle is installed on the moving side of the three-axis linkage assembly, and the three-axis linkage assembly is used to drive the position of the nozzle; a discharge hopper installed on the discharge side of the placement platform; a filter assembly mounted on the discharge side of the discharge hopper, wherein the filter assembly is used to filter the returned material; and a combined assembly connecting the nozzle and the filter assembly, wherein the combined assembly is used for the storage, return, and conveying of the material.

[0006] Preferably, the filter assembly includes: a filter tube threadedly connected to the discharge side of the discharge hopper, the surface of the filter tube having a groove, an extension tube fixedly connected to the surface of the filter tube, a mounting frame fitted inside the groove, an internal thread inside the extension tube, a filter screen installed inside the mounting frame, a connecting block fixedly connected to one side of the mounting frame, and a knob rotatably fitted to the other side of the connecting block.

[0007] Preferably, there are two sets of grooves and extension tubes, and the positions of the two sets of grooves and extension tubes are aligned one to one.

[0008] Preferably, the main body sidewall of the knob is threaded into the internal thread, and the mounting frame and connecting block are respectively fitted into the groove and the extension tube by the knob and the internal thread.

[0009] Preferably, the size of the filter screen matches the inner diameter of the filter tube, and two sets of filter screens are provided.

[0010] Preferably, the assembly includes: a reflux pump installed on the other side of the filter tube, a liquid storage tank connected to the other side of the reflux pump, a liquid extraction pump installed on the top side of the liquid storage tank, a connecting pipe connected to the other side of the liquid extraction pump, and telescopic pipes communicating on both sides of the surface of the connecting pipe.

[0011] Preferably, the other side of the telescopic tube is connected to the nozzle, and the main body of the connecting tube is supported on the support frame of the three-axis linkage assembly.

[0012] Preferably, the reflux pump is located on the bottom side of the side wall of the storage tank, and the pumping side of the pump is located on the top side of the bottom of the inner wall of the storage tank.

[0013] Compared with related technologies, the sand mold coating device provided by this utility model has the following beneficial effects: The conventional three-axis linkage assembly enables precise positioning of the nozzle, ensuring uniform and consistent coating of the sand-type paint. In conjunction with the filter screen in the filtration assembly, impurities in the return material are efficiently trapped, ensuring the normal operation of the nozzle and return pump, extending the service life of the equipment. The return assembly enables stable storage and circulation of materials, ensuring a continuous and efficient spraying process, improving material utilization, and reducing waste. Attached Figure Description

[0014] Figure 1 This is a side view of the appearance structure of this utility model; Figure 2 This is a side view of the cross-section of the placement platform and the unfolded parts of the three-axis linkage assembly of this utility model. Figure 3 This is a cross-sectional exploded side view of some parts of the filter assembly and combined assembly of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0015] Reference numerals: 1. Placement platform; 2. Three-axis linkage assembly; 3. Discharge hopper; 4. Nozzle; 5. Filter assembly; 501. Filter tube; 502. Groove; 503. Extension tube; 504. Mounting frame; 505. Internal thread; 506. Filter screen; 507. Connecting block; 508. Knob; 6. Assembly assembly; 601. Return pump; 602. Liquid storage tank; 603. Liquid pump; 604. Connecting tube; 605. Telescopic tube. Detailed Implementation

[0016] 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 application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] This utility model embodiment provides a sand-type coating device, such as... Figure 1-4 As shown, the sand-type coating device includes: a placement platform 1; a three-axis linkage assembly 2 mounted on the placement platform 1, with a nozzle 4 installed on the moving side of the three-axis linkage assembly 2, which is used to move the position of the nozzle 4; a discharge hopper 3 installed on the discharge side of the placement platform 1; a filter assembly 5 mounted on the discharge side of the discharge hopper 3, which is used to filter the returned material; and a combination assembly 6 connecting the nozzle 4 and the filter assembly 5, which is used for the storage, return, and conveying of the material.

[0019] In this embodiment, it should first be noted that the three-axis linkage component 2 is set as an existing conventional three-axis linkage mechanism, and the core components such as the related threaded rods are hidden. With the slope design of the placement platform 1 and the closure of the related slots, the core components are effectively protected. In normal use, the workpiece is first placed on the placement platform 1, and the three-axis linkage component 2 drives the nozzle 4 to move precisely in space to achieve the fixed-point spraying function. During the spraying process, excess material flows into the discharge hopper 3 and is initially filtered by the filter component 5 on its discharge side. The filter tube 501 in the filter component 5 removes impurities from the return material through the internally embedded filter screen 506. The filter screen 506 is fixed in the groove 502 by the mounting frame 504 and is threaded into the internal thread 505 of the extension tube 503 by the knob 508, so as to achieve quick disassembly and replacement. The filtered material is returned through the assembly 6. It is first transported to the storage tank 602 by the return pump 601, and then extracted by the pump 603. The material is then transported back to the nozzle 4 by the connecting pipe 604 and the telescopic pipe 605 to complete the closed-loop feeding. Finally, to address the issue of the returned material affecting the overall concentration, the solution can be added to the storage tank 602 for readjustment to achieve the desired result.

[0020] In a further preferred embodiment of the present invention, the filter assembly 5 includes: a filter tube 501 threadedly connected to the discharge side of the discharge hopper 3; a groove 502 is provided on the surface of the filter tube 501; an extension tube 503 is fixedly connected to the surface of the filter tube 501; a mounting frame 504 is fitted inside the groove 502; an internal thread 505 is provided inside the extension tube 503; a filter screen 506 is installed inside the mounting frame 504; a connecting block 507 is fixedly connected to one side of the mounting frame 504; and a knob 508 is rotatably fitted to the other side of the connecting block 507.

[0021] In this embodiment, the filter assembly 5 is installed on the discharge side of the discharge hopper 3. It is mainly used to effectively filter the material that flows back during the spraying process, preventing workpiece debris and impurities from re-entering the nozzle 4 and causing blockage. The filter screen 506 intercepts particulate impurities in the recycled material. The filter screen 506 is embedded in the mounting frame 504 and is threaded into the internal thread 505 of the extension tube 503 by the knob 508, which enables quick disassembly and replacement, ensures a tight structure, and achieves efficient and maintainable filtration function.

[0022] In a further preferred embodiment of the present invention, two sets of grooves 502 and extension tubes 503 are provided, and the positions of the two sets of grooves 502 and extension tubes 503 are aligned one to one.

[0023] In this embodiment, the groove 502 is used to fit the mounting frame 504 to ensure that the filter screen 506 is stably positioned, and the extension tube 503 provides a threaded connection structure for the knob 508, making it easy to install and remove the mounting frame 504 and the filter screen 506 assembly. The two work together to achieve precise fixing and quick installation and removal of the filter screen 506 assembly, improving the stability and maintenance convenience of the filter assembly 5.

[0024] In a further preferred embodiment of the present invention, the main body sidewall of the knob 508 is threadedly connected to the internal thread 505, and the mounting frame 504 and the connecting block 507 are respectively fitted into the groove 502 and the extension tube 503 through the knob 508 and the internal thread 505.

[0025] In this embodiment, the connecting block 507 is used to connect the mounting frame 504 and the knob 508 to achieve overall fixation of the filter screen 506 assembly. The knob 508 is threaded into the internal thread 505 of the extension tube 503, so that the mounting frame 504 is precisely embedded in the groove 502. The two work together to quickly install and remove the filter screen 506 assembly, which is convenient for cleaning and replacement, and improves the maintenance efficiency and ease of use of the device.

[0026] In a further preferred embodiment of this utility model, the size of the filter screen 506 matches the inner diameter of the filter tube 501, and two sets of filter screens 506 are provided.

[0027] In this embodiment, the filter screen 506 is installed inside the filter tube 501 to trap solid impurities in the return material, prevent impurities from entering the return pump 601 and the nozzle 4, and protect the stable operation of the subsequent conveying system.

[0028] In a further preferred embodiment of the present invention, the assembly 6 includes: a reflux pump 601 installed on the other side of the filter tube 501, a liquid storage tank 602 connected to the other side of the reflux pump 601, a liquid extraction pump 603 installed on the top side of the liquid storage tank 602, a connecting pipe 604 connected to the other side of the liquid extraction pump 603, and telescopic pipes 605 communicating on both sides of the surface of the connecting pipe 604.

[0029] In this embodiment, the assembly 6 includes a reflux pump 601, a storage tank 602, a pump 603, a connecting pipe 604, and a telescopic pipe 605. It is mainly responsible for the storage, reflux, and transportation of materials. The reflux pump 601 transports the filtered materials to the storage tank 602 for temporary storage. The pump 603 installed in the storage tank 602 draws liquid from the bottom of the inner wall and transports it back to the nozzle 4 through the connecting pipe 604 and the telescopic pipe 605 to realize the recycling of materials. The telescopic pipe 605 connects to the nozzle 4 to ensure that the pipeline moves with the nozzle and avoids dragging or obstruction.

[0030] In a further preferred embodiment of this utility model, the other side of the telescopic tube 605 is connected to the nozzle 4, and the main body of the connecting tube 604 is supported on the support frame of the three-axis linkage assembly 2.

[0031] In this embodiment, the connecting pipe 604 is responsible for material conveying and is supported by the three-axis linkage assembly 2 to ensure pipeline stability. It also has a telescopic function to ensure the stable movement of the three-axis linkage assembly 2. The telescopic pipe 605 connects to the nozzle 4 and has a length adjustment function to adapt to the movement of the nozzle 4, thereby realizing a flexible pipeline connection and ensuring continuous and stable material conveying.

[0032] In a further preferred embodiment of the present invention, the reflux pump 601 is disposed on the bottom side of the side wall of the liquid storage tank 602, and the pumping side of the pumping pump 603 is disposed on the upper side of the bottom end of the inner wall of the liquid storage tank 602.

[0033] In this embodiment, the reflux pump 601 transports the filtered material from the filter assembly 5 to the liquid storage tank 602 to achieve reflux, and the liquid extraction pump 603 is responsible for extracting the material from the liquid storage tank 602 and transporting it back to the spray nozzle 4 through the pipeline to ensure continuous circulation of material supply in the spraying system.

[0034] In summary, this device achieves precise spraying by driving the nozzle 4 through the three-axis linkage component 2, effectively purifying the returned material by combining the filter component 5, and completing the storage and circulation of materials by using the combined component 6, ensuring continuous and efficient spraying process, and improving material utilization and system stability.

[0035] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0036] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A sand-type coating device, characterized in that, include: Placement platform (1); A three-axis linkage assembly (2) is mounted on the placement platform (1). A nozzle (4) is installed on the moving side of the three-axis linkage assembly (2). The three-axis linkage assembly (2) is used to drive the nozzle (4) to move. The discharge hopper (3) is installed on the discharge side of the placement platform (1); A filter assembly (5) is installed on the discharge side of the discharge hopper (3), the filter assembly (5) being used to filter the return material; A combined assembly (6) connecting the nozzle (4) and the filter assembly (5) is used for the storage, return and conveying of materials; The filter component (5) includes: A filter tube (501) is threadedly connected to the discharge hopper (3) on the discharge side. The surface of the filter tube (501) is provided with a groove (502). An extension tube (503) is fixedly connected to the surface of the filter tube (501). A mounting frame (504) is fitted inside the groove (502). An internal thread (505) is provided inside the extension tube (503). A filter screen (506) is installed inside the mounting frame (504). A connecting block (507) is fixedly connected to one side of the mounting frame (504). A knob (508) is rotatably fitted to the other side of the connecting block (507).

2. The sand-casting coating apparatus as described in claim 1, characterized in that, The groove (502) and the extension tube (503) are each provided in two sets, and the positions of the two sets of grooves (502) and extension tubes (503) are aligned one to one.

3. The sand-casting coating apparatus as described in claim 1, characterized in that, The main body sidewall of the knob (508) is threaded in the internal thread (505), and the mounting frame (504) and the connecting block (507) are respectively fitted into the groove (502) and the extension tube (503) through the knob (508) and the internal thread (505).

4. The sand-casting coating apparatus as described in claim 1, characterized in that, The size of the filter screen (506) matches the inner diameter of the filter tube (501), and two sets of the filter screen (506) are provided.

5. The sand-casting coating apparatus as described in claim 1, characterized in that, The combined component (6) includes: A reflux pump (601) is installed on the other side of the filter tube (501). A liquid storage tank (602) is connected to the other side of the reflux pump (601). A liquid pump (603) is installed on the top side of the liquid storage tank (602). A connecting pipe (604) is connected to the other side of the liquid pump (603). Telescopic pipes (605) are connected to both sides of the surface of the connecting pipe (604).

6. The sand-casting coating apparatus as described in claim 5, characterized in that, The other side of the telescopic tube (605) is connected to the nozzle (4), and the main body of the connecting tube (604) is supported on the support frame of the three-axis linkage assembly (2).

7. The sand-casting coating apparatus as described in claim 5, characterized in that, The reflux pump (601) is located on the bottom side of the side wall of the storage tank (602), and the pumping side of the pump (603) is located on the top side of the bottom of the inner wall of the storage tank (602).

Images