Device for accelerating hardening speed of resin sand in low-temperature season

Abstract

The utility model discloses a device for accelerating the hardening speed of resin sand in low-temperature seasons, which belongs to the technical field of casting and comprises a device body arranged on a sand mixer, the device body comprises a heating box and a cable, a temperature thermocouple and an electric heating tube are fixedly arranged in the heating box, and the cable is arranged in the heating box. One end of the cable is connected with the electric heating tube, and the other end of the cable penetrates through the heating box to be connected with an automatic control box. According to the utility model, the temperature display is arranged to monitor the temperature in real time, and meanwhile, the automatic control box is used for automatically adjusting the voltage and the power supply of the electric heating tube, so that the molding core-making production is not influenced by seasons and environment temperatures, stable and automatic temperature adjustment is realized, rapid hardening of resin sand is realized, and the production efficiency is ensured; the device has no special requirements on modeling sites, equipment and tools, and is simple in structure and convenient and flexible to use; the mode of directly heating the molding sand is adopted, the investment cost is reduced, and uniform heating can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a device for accelerating the hardening speed of resin sand in low temperature seasons. Background Art

[0002] In the foundry industry, core making is a key process step, primarily used to prepare the molds and internal structures of castings. Currently, resin sand core making has become the most widely used technology in this field due to its efficiency and convenience.

[0003] While resin sand molding and core making offers numerous advantages, it suffers from a significant drawback: the curing rate of resin sand is highly susceptible to ambient temperature. In cold weather, the curing process slows significantly, leading to a significant drop in production efficiency. This issue is particularly acute in automated production lines, where the reduced curing rate caused by low temperatures directly impacts normal operation.

[0004] In the utility model patent with publication number CN209736568U and patent name "A heating device for resin sand production line", a method of installing heating facilities under the molding line is provided. Although it can effectively increase the hardening speed, it has high requirements for site and equipment and lacks flexibility.

[0005] Therefore, how to provide a device that has simple equipment and low investment cost to accelerate the hardening speed of resin sand in low temperature seasons is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to provide a device for accelerating the hardening speed of resin sand in low temperature seasons, so as to solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides a device for accelerating the hardening speed of resin sand in low temperature seasons, including a device body arranged on a sand mixer, the device body including a heating box and a cable, a temperature measuring thermocouple and an electric heating tube are fixedly arranged inside the heating box, one end of the cable is connected to the electric heating tube, and the other end of the cable passes through the heating box and is connected to an automatic control box.

[0008] Preferably, a temperature display is provided on the outer wall of the heating box, the temperature display is connected to the temperature measuring thermocouple via a first connection line, and the temperature display is connected to the automatic control box via a second connection line.

[0009] Preferably, the sand mixer includes a sand storage, a sand mixer arm, a sand mixer column and a sand mixer arm, the lower outlet of the sand storage is connected to the top of the heating box, and a gate is provided at the connection between the sand storage and the heating box.

[0010] Preferably, the sand mixer arm is arranged at the bottom of the heating box, and the discharge port of the heating box is arranged above the feed port of the sand mixer arm.

[0011] Preferably, the bottom of the sand mixer arm is fixedly connected to the sand mixer column, one end of the sand mixer arm is fixedly provided with a first motor, and the other end of the sand mixer arm is connected to the sand mixer arm through a connecting piece.

[0012] Preferably, a second motor is fixedly provided at one end of the sand mixer arm, and an outlet is provided at the other end of the sand mixer arm; both the sand mixer arm and the sand mixer arm are provided with a material passing channel, and the discharge port of the sand mixer arm is connected to the feed port of the sand mixer arm.

[0013] Preferably, the automatic control box is internally provided with a temperature controller, a PLC controller, a transformer and a contactor.

[0014] Therefore, the present invention adopts a device for accelerating the hardening speed of resin sand in low temperature seasons with the above structure, which has the following beneficial effects:

[0015] (1) By setting a temperature display to monitor the temperature in real time and adjusting the voltage and power supply of the heating tube through the automatic control box, the resin sand can be maintained at the preset temperature, so that the molding and core making production is not affected by the season and ambient temperature, and rapid hardening is achieved to ensure production efficiency.

[0016] (2) By setting up a heating box, an automatic control box and connecting relevant control equipment, efficient and automatic temperature regulation can be achieved. The equipment is simple and easy to use. Compared with the heating method using heating facilities, the direct heating method used by this device has lower investment costs and can achieve uniform heating.

[0017] (3) This device has no special requirements for the molding site, equipment and tooling, and is easy and flexible to use. At the same time, by changing the preset temperature, it can be applied to various types of self-hardening resin sand, such as furan resin sand, Bonnie resin sand, etc.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0020] Figure 2 This is a partial enlarged view of the heating box of an embodiment of the present utility model;

[0021] Reference numerals:

[0022] 1. Heating box; 2. Temperature measuring thermocouple; 3. Electric heating tube; 4. Cable; 5. Automatic control box; 6. Temperature display; 7. First connecting line; 8. Second connecting line; 9. Sand storage; 10. Gate; 11. Sand mixer arm; 12. Sand mixer column; 13. First motor; 14. Second motor; 15. Sand mixer arm; 16. Exit. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] Example

[0026] like Figure 1-Figure 2 As shown, the present invention is a device for accelerating the hardening speed of resin sand in low temperature seasons, including a device body arranged on a sand mixer, the device body including a heating box 1 and a cable 4. The heating box 1 is preferably in an inverted cone shape to facilitate the automatic descent of the molding sand. A temperature measuring thermocouple 2 and an electric heating tube 3 are fixedly arranged inside the heating box 1. If the sand mixer is large and the sand flow rate is large, a larger heating box 1 and electric heating tube 3 should be designed and selected, and a larger number of electric heating tubes 3 should be installed in the heating box 1. The shape and size of the electric heating tube 3 can be customized according to the shape and size of the heating box 1, or existing products from professional factories can be purchased for assembly, which can be flexibly determined.

[0027] One end of the cable 4 is connected to the electric heating tube 3. The power of the electric heating tube 3 is designed according to the size of the sand mixer and can be selected between 1 and 5 kW. The other end of the cable 4 passes through the heating box 1 and is connected to the automatic control box 5, which automatically adjusts the power supply voltage of the electric heating tube 3 or automatically cuts off and supplies power.

[0028] A temperature display 6 is arranged on the outer wall of the heating box 1, and the temperature display 6 is connected with the temperature measuring thermocouple 2 through a first connecting wire 7, so that the sand temperature in the heating box 1 can be monitored in real time; the temperature display 6 is connected with the automatic control box 5 through a second connecting wire 8, and the automatic control box 5 can automatically adjust the power supply and voltage of the electric heating tube 3 according to the sand temperature of the temperature display 6, so that the resin sand can be maintained at a preset temperature.

[0029] Before molding and core making, the power supply is turned on, the electric heating tube 3 starts to heat the resin sand, and when the sand temperature displayed by the temperature display 6 reaches the requirement, the sand mixer can be started; in the process of flowing of the resin sand, the electric heating tube 3 continuously heats the resin sand, and according to the actual sand temperature displayed by the temperature display 6, the control part automatically adjusts the power voltage of the electric heating tube 3 or automatically cuts off and supplies power, so that the temperature of the resin sand in the heating box 1 is maintained within a reasonable range. When the device is used on a molding and core making production line, the production can be carried out normally as if in an ideal environment temperature, and is not affected by the environment temperature.

[0030] The sand mixer comprises a sand bin 9, a sand mixer large arm 11, a sand mixer stand 12 and a sand mixer small arm 15, the lower outlet of the sand bin 9 is connected with the top of the heating box 1, and a gate plate 10 is arranged at the connection position of the sand bin 9 and the heating box 1; the gate plate 10 can adjust the flow of the resin sand flowing from the sand bin 9 into the heating box 1 according to the requirement. The sand mixer large arm 11 is arranged at the bottom of the heating box 1, and the discharge outlet of the heating box 1 is arranged above the feeding inlet of the sand mixer large arm 11.

[0031] The bottom of the sand mixer large arm 11 is fixedly connected with the sand mixer stand 12, a first motor 13 is fixedly arranged at one end of the sand mixer large arm 11, and the sand mixer small arm 15 is connected with the other end of the sand mixer large arm 11. The sand mixer large arm 11 and the sand mixer small arm 15 are both provided with a material passing channel, and the discharge outlet of the sand mixer large arm 11 is in communication with the feeding inlet of the sand mixer small arm 15. A second motor 14 is fixedly arranged at one end of the sand mixer small arm 15, and an outlet 16 is arranged at the other end of the sand mixer small arm 15.

[0032] The automatic control box 5 is internally provided with temperature control instruments, PLC controllers, transformers, contactors and other components, and the voltage or power supply provided for the electric heating tube 3 can be automatically adjusted through the cable wire 4.

[0033] The use method of the above device is as follows:

[0034] First, open the gate 10 to allow the resin sand in the sand storage 9 to be poured into the heating box 1, and then close the gate 10; then connect the electric heating tube 3 to the power supply, and the electric heating tube 3 begins to heat the resin sand; finally, when the temperature measured by the temperature display 6 reaches the preset value, open the gate 10, the first motor 13 and the second motor 14 at the same time to mix the sand, and the sand mixer arm 11 transports the heated resin sand to the sand mixer arm 15. After being stirred and mixed by the sand mixer arm 15, the evenly mixed and heated resin sand is output from the outlet 16 for subsequent molding and core making.

[0035] During the self-hardening sand transportation process, the electric heating tube 3 will continue to heat the resin sand. According to the sand temperature displayed by the temperature display 6, the automatic control box 5 will automatically adjust the voltage of the electric heating tube 3 and the power on and off, so that the resin sand in the heating box 1 is always maintained at the preset temperature.

[0036] Therefore, the utility model adopts a device of the above structure to accelerate the hardening speed of resin sand in low temperature seasons. By setting a temperature display to monitor the temperature in real time, and by adjusting the voltage and power supply of the heating tube through the automatic control box, the resin sand can be maintained at a preset temperature, so that the molding and core making production is not affected by the season and ambient temperature, and rapid hardening is achieved to ensure production efficiency.

[0037] By installing a heating box, an automatic control box, and connecting the relevant control equipment, efficient and automated temperature regulation can be achieved. The equipment is simple and easy to use. Compared with heating methods using heating facilities, this device has a lower investment cost and is easy to implement.

[0038] This device has no special requirements for molding sites, equipment, or tooling, and is easy and flexible to use. It can also be used with various types of self-hardening resin sands, such as furan resin sand and Bonnie resin sand, by changing the preset temperature.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A device for accelerating the hardening speed of resin sand in low temperature seasons, characterized by: The invention comprises a device body arranged on a sand mixer, the device body comprising a heating box and a cable, a temperature measuring thermocouple and an electric heating tube are fixedly arranged inside the heating box, one end of the cable is connected to the electric heating tube, and the other end of the cable passes through the heating box and is connected to an automatic control box.

2. The device for accelerating the hardening speed of resin sand in low temperature seasons according to claim 1, characterized in that: A temperature display is provided on the outer wall of the heating box. The temperature display is connected to the temperature measuring thermocouple via a first connection line, and the temperature display is connected to the automatic control box via a second connection line.

3. The device for accelerating the hardening speed of resin sand in low temperature seasons according to claim 2, characterized in that: The sand mixer comprises a sand storage, a sand mixer arm, a sand mixer column and a sand mixer arm. The lower outlet of the sand storage is connected to the top of the heating box. A gate plate is provided at the connection between the sand storage and the heating box.

4. The device for accelerating the hardening speed of resin sand in low temperature seasons according to claim 3, characterized in that: The sand mixer arm is arranged at the bottom of the heating box, and the discharge port of the heating box is arranged above the feed port of the sand mixer arm.

5. The device for accelerating the hardening speed of resin sand in low temperature seasons according to claim 4, characterized in that: The bottom of the sand mixer arm is fixedly connected to the sand mixer column, one end of the sand mixer arm is fixedly provided with a first motor, and the other end of the sand mixer arm is connected to the sand mixer arm.

6. The device for accelerating the hardening speed of resin sand in low temperature seasons according to claim 5, characterized in that: A second motor is fixedly provided at one end of the sand mixer arm, and an outlet is provided at the other end of the sand mixer arm.

7. The device for accelerating the hardening speed of resin sand in low temperature seasons according to claim 1, characterized in that: The automatic control box is internally provided with a temperature controller, a PLC controller, a transformer and a contactor.

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