A local sand shooting device for a casting sand core

Abstract

The application discloses a casting sand core local sand shooting device and belongs to the technical field of sand shooting. Mainly including a sand shooting machine with a workbench and a mold, a drying mechanism is arranged on one side of the workbench, the drying mechanism has a fixing frame, the drying mechanism further comprises slide rails arranged on the two sides of the fixing frame, slide blocks are arranged on the slide rails, temporary storage boxes are arranged between the slide blocks, electric heating wires are arranged in the temporary storage boxes, guide outlets are arranged on one side of the temporary storage boxes, and fans are arranged on the other side of the temporary storage boxes. The casting sand core local sand shooting device has the effects that the rapid directional drying of the release agent and the synchronous collection of waste gas are achieved through the heating assembly and the negative pressure cover connected with the negative pressure equipment.

Description

Technical Field

[0001] This application relates to the field of sand-shooting technology, specifically a local sand-shooting device for casting sand cores. Background Technology

[0002] Casting sand cores are a key component in modern casting processes, and their quality directly determines the dimensional accuracy and internal quality of the castings. The sand injection machine, as the core equipment for manufacturing sand cores, uses compressed air to inject core sand mixed with binder at high speed into the mold cavity (11), where it is then heated and solidified to form the sand core.

[0003] For example, the patent with publication number CN217223509U discloses a dual-sand-shooting automatic core shooter. This patent uses a dual-sand-shooting design, and the sand-shooting mechanism can reach a more ideal sand-shooting position under the adjustment of the slide plate adjustment mechanism, so as to facilitate subsequent sand-shooting operations. Before sand blasting, a release agent must be evenly sprayed onto the surface of the mold cavity to prevent the cured sand core from sticking to the mold surface. Currently, the industry commonly uses water-based or solvent-based release agents, applied manually or automatically using spray guns. However, after the coating is completed, the carrier (moisture or organic solvent) in the release agent needs to be completely evaporated by the temperature of the mold itself and natural air convection. This waiting process usually takes 30 seconds to 2 minutes. This non-productive waiting time directly leads to a decrease in equipment utilization and an extension of the production cycle.

[0004] Therefore, it is necessary to provide a local sand-shooting device for casting sand cores to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a local sand-shooting device for casting sand cores, which solves the problem of equipment idleness and low production efficiency caused by the need to let the release agent stand and wait for it to evaporate naturally after spraying in the traditional sand-shooting process.

[0007] The technical solution adopted by this application to solve its technical problem is: a local sand-shooting device for casting sand cores, comprising: A sand-shooting machine equipped with a worktable and molds; A drying mechanism is disposed on one side of the workbench. The drying mechanism has a fixing frame and further includes: The slide rails are arranged on both sides of the fixed frame; A slider, which is mounted on the slide rail; A temporary storage box is disposed between the sliders; A heating wire is disposed inside the temporary storage box; An outlet is provided on one side of the temporary storage box; A fan is located on the other side of the temporary storage box.

[0008] Furthermore, a fixed base is fixedly provided on one side of the workbench, and a rotating shaft is rotatably connected between the fixed bases via bearings. A motor is fixedly installed on the outer end of one of the fixed bases, and the output end of the motor is fixedly connected to the rotating shaft.

[0009] Furthermore, an electric cylinder is fixedly installed at the lower end of the fixing frame, and the output end of the electric cylinder passes through the fixing frame and is fixedly connected to the temporary storage box.

[0010] Furthermore, the wiring terminal of the heating wire passes through the side wall of the temporary storage box and is connected to an external power source.

[0011] Furthermore, the outlet is configured in a strip shape.

[0012] Furthermore, a negative pressure cover is fixedly installed on the side of the fixing frame facing away from the temporary storage box. A negative pressure port is opened at the top of the negative pressure cover, and the negative pressure port is connected to an external negative pressure device through a high-temperature resistant hose.

[0013] The beneficial effects of this application are: the casting sand core local sand shooting device provided by this application achieves the effect of rapid directional air drying of the release agent and simultaneous collection of waste gas by setting a heating component and a negative pressure cover connected to a negative pressure device.

[0014] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a local sand-shooting device for casting sand cores according to this application; Figure 2 This is a schematic diagram of the casting sand core local sand-shooting device from another angle. Figure 3 for Figure 2 A schematic diagram of the central airway dryer mechanism; Figure 4 for Figure 2 Another angle diagram of the central air-drying mechanism; Figure 5 for Figure 4 A schematic diagram of the heating element; Figure 6 for Figure 4 Cross-sectional schematic diagram of the heating component; The following are the labeling elements in the figure: 1. Sand shooting machine; 10. Workbench; 11. Mold; 2. Drying mechanism; 20. Fixed base; 21. Rotating shaft; 22. Motor; 23. Fixed frame; 24. Slide rail; 25. Slider; 26. Electric cylinder; 27. Heating component; 270. Temporary storage box; 271. Fan; 272. Heating wire; 273. Outlet; 274. Negative pressure cover; 275. Negative pressure port. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] like Figure 1 As shown, the casting sand core local sand shooting device provided in this application is mainly installed in the sand core production line of the foundry workshop for sand shooting operation on the sand core. Specifically, the sand shooting device includes a sand shooting machine 1, which is a conventional equipment in the prior art. It is equipped with a sand hopper, a sand shooting valve and a pneumatic control system. The resin sand is injected into the mold cavity by compressed air and then heated and cured to form a sand core. In order to realize the sand shooting operation, a worktable 10 is fixedly installed on the top of the sand shooting machine 1. A mold 11 is installed on the worktable 10 for forming the structural cavity of the sand core. In order to quickly dry the release agent on the surface of mold 11, such as Figures 1-6 As shown, a drying mechanism 2 is provided on the workbench 10 at one side of the mold 11. The drying mechanism 2 includes two sets of fixed seats 20 fixedly installed on the workbench 10, and a rotating shaft 21 is rotatably connected between the two sets of fixed seats 20 through a bearing. Meanwhile, a motor 22 is fixedly installed on the outer end of the fixed base 20 on one side. The output end of the motor 22 is fixedly connected to the rotating shaft 21, so that when the motor 22 is started, it can drive the rotating shaft 21 to rotate between the fixed bases 20. Furthermore, a fixed frame 23 is fixedly connected to the rotating shaft 21. The fixed frame 23 is L-shaped, so that the rotating shaft 21 can be driven to rotate by the motor 22, thereby driving the fixed frame 23 to rotate to the working position directly above the mold 11 for subsequent air drying operations. Meanwhile, slide rails 24 are fixedly installed on both sides of the fixed frame 23, and sliders 25 are slidably installed on the slide rails 24. A temporary storage box 270 is fixedly installed between the two sets of sliders 25. An electric cylinder 26 is fixedly installed at the lower end of the fixed frame 23. The output end of the electric cylinder 26 passes through the fixed frame 23 and is fixedly connected to the temporary storage box 270. Thus, the extension and retraction of the electric cylinder 26 can drive the temporary storage box 270 to slide horizontally back and forth along the slide rail 24. Furthermore, a heating assembly 27 is provided inside the temporary storage box 270. The heating assembly 27 includes an electric heating wire 272 fixedly installed inside the temporary storage box 270. The wiring terminal of the electric heating wire 272 passes through the side wall of the temporary storage box 270 and is connected to an external power source to generate heat energy after being powered on. Meanwhile, a strip-shaped outlet 273 is provided on the side of the temporary storage box 270 facing the mold 11, and multiple sets of axial flow fans 271 are installed on the other side of the temporary storage box 270. Thus, when the heating wire 272 heats up and the fan 271 starts, the hot air in the temporary storage box 270 can be concentrated and blown onto the surface of the mold 11 through the outlet 273 to achieve rapid drying of the release agent. Furthermore, a negative pressure hood 274 is fixedly installed on the side of the fixed frame 23 facing away from the temporary storage box 270. The top of the negative pressure hood 274 is provided with a negative pressure port 275. The negative pressure port 275 is connected to an external negative pressure device through a high-temperature resistant hose, so that negative pressure can be continuously generated during the drying process, and the volatile solvent vapor is drawn through the negative pressure hood 274 to the treatment device for purification, thus preventing harmful gases from escaping into the workshop environment. After the sand shooting machine 1 completes the previous cycle and the mold release agent is sprayed on the surface of the mold 11, the motor 22 is started to drive the rotating shaft 21, which in turn drives the fixed frame 23 to rotate directly above the mold 11. Then, the heating wire 272 and fan 271 are activated to generate a high-temperature airflow inside the temporary storage box 270. Then, the electric cylinder 26 is activated to drive the temporary storage box 270 to move back and forth along the slide rail 24 so that the hot air can evenly cover the surface of the mold 11. At the same time, the external negative pressure equipment is started, and the volatile waste gas is drawn out through the negative pressure hood 274. After the release agent is completely dry, the drying mechanism 2 is reset, and the sand shooting machine 1 can carry out the mold closing and sand shooting operation.

[0019] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A local sand-shooting device for casting sand cores, comprising a sand-shooting machine (1) having a worktable (10) and a mold (11), characterized in that: A drying mechanism (2) is disposed on one side of the workbench (10). The drying mechanism (2) has a fixing frame (23). The drying mechanism (2) also includes: Slide rails (24) are provided on both sides of the fixed frame (23); A slider (25) is mounted on the slide rail (24); A temporary storage box (270) is disposed between the sliders (25); A heating wire (272) is disposed inside the temporary storage box (270); Outlet (273) is provided on one side of the temporary storage box (270); A fan (271) is located on the other side of the temporary storage box (270).

2. The casting sand core local sand-shooting device according to claim 1, characterized in that: A fixed seat (20) is fixedly provided on one side of the workbench (10). A rotating shaft (21) is rotatably connected between the fixed seats (20) via bearings. A motor (22) is fixedly installed on the outer end of one of the fixed seats (20). The output end of the motor (22) is fixedly connected to the rotating shaft (21).

3. The casting sand core local sand-shooting device according to claim 1, characterized in that: An electric cylinder (26) is fixedly installed at the lower end of the fixed frame (23). The output end of the electric cylinder (26) passes through the fixed frame (23) and is fixedly connected to the temporary storage box (270).

4. The casting sand core local sand-shooting device according to claim 1, characterized in that: The terminals of the heating wire (272) pass through the side wall of the temporary storage box (270) and are connected to an external power source.

5. The casting sand core local sand-shooting device according to claim 1, characterized in that: The outlet (273) is a strip-shaped structure.

6. The casting sand core local sand-shooting device according to claim 1, characterized in that: The mounting bracket (23) is fixedly installed with a negative pressure cover (274) on the side facing away from the temporary storage box (270). The top of the negative pressure cover (274) is provided with a negative pressure port (275), and the negative pressure port (275) is connected to an external negative pressure device through a high-temperature resistant hose.

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