Precoated sand melting point detection equipment

Abstract

The utility model discloses precoated sand melting point detection equipment, relates to the technical field of precoated sand detection, and provides the following scheme aiming at the problems proposed in the background technology: the precoated sand melting point detection equipment comprises a working table, a melting point detector fixedly connected to the upper surface of the working table, a blanking frame in lap joint with the upper surface of the working table, and a support frame fixedly connected to the upper surface of the working table, the upper surface of the supporting frame is fixedly connected with a connecting rod, the top end of the connecting rod is rotationally connected with a first rotating seat, and the left side of the workbench is fixedly connected with an automatic sanding assembly. By arranging the driving motor, the lead screw, the movable frame, the storage box, the strip-shaped discharging frame and the perforated plate, the precoated sand spreading device can replace manual precoated sand spreading operation, the sand spreading efficiency is improved, meanwhile, the precoated sand is blocked by the perforated plate after entering the strip-shaped discharging frame, the amount of the precoated sand flowing out at a time is small, the precoated sand is matched with constant-speed movement of the storage box, and the working efficiency is improved. And it can be ensured that the precoated sand is evenly laid on the flat laying plate, and the detection accuracy can also be improved.

Description

Technical Field

[0001] This utility model relates to the field of coated sand testing technology, and in particular to a device for testing the melting point of coated sand. Background Technology

[0002] Coated sand is a type of molding sand or core sand in which a layer of solid resin film is coated on the surface of the sand grains before molding. The process involves mechanically mixing powdered thermosetting phenolic resin with the raw sand and curing it upon heating. Later, it was developed into coated sand prepared by adding a latent curing agent (hexamethylenetetramine) and a lubricant to thermoplastic phenolic resin through a specific coating process. When the coated sand is heated, the resin coating the surface of the sand grains melts. Under the action of the methylene groups released from the decomposition of hexamethylenetetramine, the molten resin rapidly transforms from a linear structure to a non-melting three-dimensional structure, thereby solidifying and shaping the coated sand. Since the melting points of different types of coated sand vary after production, melting point testing is required for different types of coated sand.

[0003] In actual operation, current equipment for testing the melting point of coated sand generally requires manual feeding of the coated sand by staff. This feeding method requires staff to pour the coated sand into the testing equipment and then spread it evenly to ensure uniform layer thickness and accurate testing. However, this method is inefficient and has room for improvement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for detecting the melting point of coated sand.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A melting point testing device for coated sand includes a workbench, a melting point detector fixedly connected to the upper surface of the workbench, a feeding frame overlapping the upper surface of the workbench, a support frame fixedly connected to the upper surface of the workbench, a connecting rod fixedly connected to the upper surface of the support frame, a first rotating seat rotatably connected to the top of the connecting rod, a testing platform fixedly connected to the upper surface of the first rotating seat, a side baffle fixedly connected to the right side of the testing platform by two mounting bolts, a flat plate fixedly connected to the inner wall of the testing platform, and an electric heating plate fixedly connected to the inner bottom wall of the testing platform. An automatic sand-spreading component is fixedly connected to the left side of the workbench, and an automatic material feeding component is fixedly connected to the upper surface of the workbench. The automatic sand-spreading component includes a drive motor, and a lead screw is fixedly connected to the output end of the drive motor. A strip groove is opened on the back of the workbench, and a movable frame is slidably connected to the inner wall of the strip groove. A storage box is fixedly connected to the front of the movable frame, and a feed hopper is fixedly connected to the upper surface of the storage box. A guide block is fixedly connected to the inner bottom wall of the storage box, and a strip discharge frame is fixedly connected to the lower surface of the storage box. A perforated plate is fixedly connected to the inner wall of the strip discharge frame.

[0007] Preferably, the right side of the testing platform has two threaded grooves that are compatible with the mounting bolts. The right end of the lead screw extends into the interior of the groove and is rotatably connected to the right inner wall of the groove. After unscrewing the mounting bolts, the side baffle can be removed from the right side of the testing platform.

[0008] Preferably, the movable frame has a screw hole on its side, and the movable frame is threadedly connected to the lead screw through the screw hole. When the lead screw rotates, it can drive the movable frame to move left and right.

[0009] Preferably, the bottom of the guide block corresponds to the position of the strip discharge frame, and the position of the strip discharge frame corresponds to the position of the testing platform. The guide block can guide the coated sand in the storage box into the interior of the strip discharge frame.

[0010] Preferably, the automatic feeding assembly includes an electric push rod, the output end of which is fixedly connected to a top rod, and a second rotating seat is slidably connected to the lower surface of the detection table. The electric push rod can drive the top rod to rise and fall.

[0011] Preferably, the top end of the push rod is rotatably connected to the inner wall of the second rotating seat, and when the push rod moves upward, it can rotate with the second rotating seat.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By setting up a drive motor, lead screw, movable frame, storage box, strip discharge frame and perforated plate, the coating sand can be spread by replacing manual labor. This not only improves the efficiency of sand spreading, but also ensures that the amount of coating sand flowing out at one time is small due to the obstruction effect of the perforated plate after entering the strip discharge frame. In addition, the uniform movement of the storage box ensures that the coating sand is evenly spread on the flat plate, which also improves the accuracy of detection.

[0014] 2. By setting up an electric push rod, a push rod, and a second rotating seat, the testing table can be driven to rotate around the first rotating seat as the center, thereby causing the testing table to tilt to the right. This allows the coated sand that has been tested to automatically flow into the feeding frame, completing the automated feeding operation. There is no need for staff to manually contact the heated testing table, which improves feeding efficiency and safety. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a film-coated sand melting point testing device proposed in this utility model;

[0016] Figure 2 This is a three-dimensional disassembled structural diagram of the automatic sand-laying component of a coated sand melting point detection device proposed in this utility model;

[0017] Figure 3This is a front section diagram of the automatic feeding component of a coated sand melting point detection device proposed in this utility model.

[0018] In the diagram: 1. Workbench; 2. Melting point detector; 3. Feeding frame; 4. Support frame; 5. Connecting rod; 6. First rotating seat; 7. Testing table; 8. Mounting bolt; 9. Side baffle; 10. Flat plate; 11. Electric heating plate; 12. Drive motor; 13. Lead screw; 14. Movable frame; 15. Storage box; 16. Feed hopper; 17. Guide block; 18. Strip discharge frame; 19. Perforated plate; 20. Electric push rod; 21. Top rod; 22. Second rotating seat. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1, referring to Figure 1 , Figure 2 and Figure 3 A coating sand melting point testing device includes a workbench 1, a melting point tester 2 fixedly connected to the upper surface of the workbench 1, a feeding frame 3 overlapping the upper surface of the workbench 1, a support frame 4 fixedly connected to the upper surface of the workbench 1, a connecting rod 5 fixedly connected to the upper surface of the support frame 4, a first rotating seat 6 rotatably connected to the top of the connecting rod 5, a testing table 7 fixedly connected to the upper surface of the first rotating seat 6, a side baffle 9 fixedly connected to the right side of the testing table 7 by two mounting bolts 8, and two threaded grooves adapted to the mounting bolts 8 opened on the right side of the testing table 1.

[0021] A flat plate 10 is fixedly connected to the inner wall of the testing table 7, an electric heating plate 11 is fixedly connected to the inner bottom wall of the testing table 7, an automatic sand spreading assembly is fixedly connected to the left side of the worktable 1, an automatic feeding assembly is fixedly connected to the upper surface of the worktable 1, the automatic sand spreading assembly includes a drive motor 12, a lead screw 13 is fixedly connected to the output end of the drive motor 12, a strip groove is opened on the back of the worktable 1, the right end of the lead screw 13 extends into the interior of the strip groove and is rotatably connected to the right inner wall of the strip groove, a movable frame 14 is slidably connected to the inner wall of the strip groove, a screw hole is opened on the side of the movable frame 14, and the movable frame 14 is threadedly connected to the lead screw 13 through the screw hole;

[0022] A storage box 15 is fixedly connected to the front of the movable frame 14. A feed hopper 16 is fixedly connected to the upper surface of the storage box 15. A guide block 17 is fixedly connected to the inner bottom wall of the storage box 15. A strip discharge frame 18 is fixedly connected to the lower surface of the storage box 15. The bottom end of the guide block 17 corresponds to the position of the strip discharge frame 18, and the position of the strip discharge frame 18 corresponds to the position of the detection table 7. A perforated plate 19 is fixedly connected to the inner wall of the strip discharge frame 18.

[0023] The drive motor 12 can drive the movable frame 14 to move left and right in the strip groove through the lead screw 13, thereby driving the storage box 15 to move left and right above the detection table 7. During the left and right movement, the storage box 15 can guide the coated sand into the strip discharge frame 18 through the guide block 17. After the blocking effect of the perforated plate 19, the coated sand will not flow out too much at once. At the same time, the storage box 15 moves left and right at a uniform speed on the detection table 7, which can ensure that the coated sand is spread evenly on the spreading plate 10, so that the coated sand layer thickness is the same, ensuring the accuracy of detection, and also improving the sand spreading efficiency.

[0024] Example 2: Refer to Figure 1 and Figure 3 The automatic feeding assembly includes an electric push rod 20, the output end of which is fixedly connected to a top rod 21, and a second rotating seat 22 is slidably connected to the lower surface of the detection table 7. The top end of the top rod 21 is rotatably connected to the inner wall of the second rotating seat 22.

[0025] The electric push rod 20 can drive the top rod 21 to rise, thereby driving the second rotating seat 22 to slide to the left under the inspection table 7. By using the lever to move away, the inspection table 7 is tilted to the right as a whole, so that all the coated sand on the flat plate 10 after inspection can be poured into the unloading frame 3, completing the automated unloading operation and improving unloading efficiency and safety.

[0026] Working principle: First, the coated sand is poured into the feed hopper 16, and then directly enters the storage tank 15 through the feed hopper 16. At this time, the drive motor 12 is turned on, and the drive motor 12 drives the lead screw 13 to rotate, thereby driving the movable frame 14 to move to the right. The movable frame 14 can drive the storage tank 15 to move to the right on the testing platform 7, thereby driving the coated sand in the storage tank 15 to be guided by the guide block 17 and discharged through the strip discharge frame 18 onto the flat plate 10 on the inner wall of the testing platform 7. Because the coated sand is blocked by the perforated plate 19 after entering the strip discharge frame 18, it will not flow out too much at once, thus allowing it to flow out more evenly. The coated sand is laid flat on the flat plate 10. After the flat plate is laid, the electric heating plate 11 is turned on to heat the coated sand through the flat plate 10. At this time, the melting point of the coated sand can be detected by the melting point detector 2. After the detection is completed, the two mounting bolts 8 are unscrewed and the side baffle 9 is taken out. At the same time, the electric push rod 20 is turned on, so that the electric push rod 20 drives the top rod 21 to rise, thereby driving the second rotating seat 22 to slide to the left under the detection table 7. The first rotating seat 6 drives the detection table 7 to tilt as a whole, so that all the coated sand in the detection table 7 flows into the feeding frame 3, completing the automated feeding operation and improving feeding efficiency and safety.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coating sand melting point testing device, comprising a workbench (1), a melting point detector (2) fixedly connected to the upper surface of the workbench (1), a feeding frame (3) overlapping the upper surface of the workbench (1), a support frame (4) fixedly connected to the upper surface of the workbench (1), a connecting rod (5) fixedly connected to the upper surface of the support frame (4), a first rotating seat (6) rotatably connected to the top of the connecting rod (5), a testing table (7) fixedly connected to the upper surface of the first rotating seat (6), a side baffle (9) fixedly connected to the right side of the testing table (7) by two mounting bolts (8), a flat plate (10) fixedly connected to the inner wall of the testing table (7), an electric heating plate (11) fixedly connected to the inner bottom wall of the testing table (7), an automatic sand spreading component fixedly connected to the left side of the workbench (1), and an automatic feeding component fixedly connected to the upper surface of the workbench (1), characterized in that, The automatic sand-laying assembly includes a drive motor (12), the output end of which is fixedly connected to a lead screw (13). A strip groove is provided on the back of the workbench (1). A movable frame (14) is slidably connected to the inner wall of the strip groove. A storage box (15) is fixedly connected to the front of the movable frame (14). A feed hopper (16) is fixedly connected to the upper surface of the storage box (15). A guide block (17) is fixedly connected to the inner bottom wall of the storage box (15). A strip discharge frame (18) is fixedly connected to the lower surface of the storage box (15). A perforated plate (19) is fixedly connected to the inner wall of the strip discharge frame (18).

2. The equipment for detecting the melting point of coated sand according to claim 1, characterized in that, The right side of the testing platform has two threaded grooves that are compatible with the mounting bolts (8). The right end of the lead screw (13) extends into the inside of the groove and is rotatably connected to the right inner wall of the groove.

3. The melting point detection device for coated sand according to claim 1, characterized in that, The movable frame (14) has a screw hole on its side, and the movable frame (14) is threadedly connected to the lead screw (13) through the screw hole.

4. The equipment for detecting the melting point of coated sand according to claim 1, characterized in that, The bottom position of the guide block (17) corresponds to the position of the strip discharge frame (18), and the position of the strip discharge frame (18) corresponds to the position of the detection table (7).

5. The melting point detection device for coated sand according to claim 1, characterized in that, The automatic feeding assembly includes an electric push rod (20), the output end of which is fixedly connected to a top rod (21), and a second rotating seat (22) is slidably connected to the lower surface of the detection table (7).

6. The melting point detection device for coated sand according to claim 5, characterized in that, The top end of the top rod (21) is rotatably connected to the inner wall of the second rotating seat (22).

Images