A medium frequency furnace adapted to a resin sand process

Abstract

The utility model discloses a kind of medium frequency furnace suitable for resin sand technology, belong to medium frequency furnace field, the upper end of furnace body is equipped with sealing furnace cover, the sealing of furnace body upper end opening is realized by sealing furnace cover;The side wall of furnace stand is equipped with inclined bracing plate, and the lower bottom of inclined bracing plate and furnace stand is equipped with bottom plate, two oil cylinder pedestals are installed on bottom plate, the two sides of sealing furnace cover are equipped with oil cylinder top seat, and telescopic oil cylinder is connected between oil cylinder top seat and oil cylinder pedestal, and the opening and closing of sealing furnace cover are driven by telescopic telescopic oil cylinder. Automatic uncovering system cooperates with sealing furnace cover, when needing to add or take out furnace charge, automatic uncovering system opens sealing furnace cover and furnace nozzle quickly and accurately, convenient operation;After adding or taking out furnace charge, sealing furnace cover can be closed quickly again, ensure that the environment in furnace recovers stable state quickly, both ensure the convenience of operation, and maximumly reduce the time of environment in furnace being interfered by outside, conducive to the stable performance of resin sand technology, improve production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of medium frequency furnaces, and in particular to a medium frequency furnace adapted to resin sand process. Background Technology

[0002] Resin sand casting is a sand casting process that uses resin as a binder. By optimizing the sand mold formula and curing technology, it effectively isolates the chemical reaction between the high-temperature molten metal and the mold, reducing defects such as sand adhesion and porosity in the castings. It is suitable for precision casting of various materials such as cast iron and alloy steel.

[0003] An intermediate frequency furnace is a power supply device that converts 50Hz AC power into intermediate frequency (300Hz to 10000Hz). Based on the principle of electromagnetic induction, it generates intermediate frequency current through rectification and inversion, which causes the induction coil to generate an alternating magnetic field, cutting metal materials to generate eddy currents and achieve efficient heating.

[0004] Currently, the medium-frequency furnaces used in resin sand processes rely on workers' experience to judge when to open the lid. The high-temperature environment leads to poor operational safety, requiring workers to wear heavy protective equipment. Prolonged operation can easily cause heatstroke or burns. The opening speed is difficult to control precisely. Opening the lid too early may cause cracks in the castings due to rapid cooling, while opening it too late may prolong the production cycle. The efficiency of manual operation is limited by physical strength, and continuous operation is prone to operational deviations, affecting the stability of casting quality.

[0005] While robotic arms improve efficiency, they also have high initial investment costs, with the purchase cost of a single robotic arm exceeding 500,000 yuan, making them unaffordable for small and medium-sized enterprises. Furthermore, they suffer from insufficient system stability, with high-temperature environments causing sensor malfunctions or hydraulic system leaks. Their flexibility is limited, requiring multiple adjustments to the opening angle for complex castings, making it difficult for robotic arms to perform precise operations. Finally, maintenance costs are exorbitant, accounting for 12% of the total equipment price annually, including spare parts replacement and professional technician debugging. Utility Model Content

[0006] The main objective of this invention is to provide a medium-frequency furnace adapted to resin sand processes, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A medium-frequency furnace adapted to resin sand process includes a furnace body, a platform, and a furnace frame, wherein the furnace body is installed inside the frame of the furnace frame, and the platform is located at the upper end of the furnace frame.

[0009] The upper end of the furnace body is provided with a sealing furnace cover, which seals the opening at the upper end of the furnace body.

[0010] The side wall of the furnace frame is provided with a diagonal brace, and the bottom of the diagonal brace and the furnace frame is provided with a base plate. Two oil cylinder bases are installed on the base plate. Oil cylinder top seats are provided on both sides of the sealed furnace cover. A telescopic oil cylinder is connected between the oil cylinder top seats and the oil cylinder bases. The telescopic oil cylinder drives the opening and closing of the sealed furnace cover by extending and retracting. A support shaft is connected to one side of the base plate through a connecting steel frame. The support shaft supports the platform.

[0011] In a preferred embodiment of this application, the sealed furnace cover includes a furnace cover body, a furnace nozzle, a hook, and furnace ears. The furnace cover body is connected to the furnace body via a hinge assembly. The furnace nozzle is located at the discharge port of the furnace cover body. The hook is hung on the furnace cover body. Furnace ears are provided on both sides of the furnace cover body.

[0012] In a preferred embodiment of this application, the furnace ear is integrated with the furnace cover, and a through hole is provided on the end face of the furnace ear. The oil cylinder top seat is installed on the furnace ear by bolts, and the oil cylinder top seat and the oil cylinder base have the same structure.

[0013] In a preferred embodiment of this application, both the cylinder base and the cylinder top seat include a support, a cylinder shaft, an isolation sleeve, and a quick-connect snap ring. The support is bolted to the furnace ear or the base plate, and the cylinder shaft is mounted on the support via the isolation sleeve and the quick-connect snap ring.

[0014] In a preferred embodiment of this application, both the tail end and the telescopic end of the telescopic cylinder are provided with sleeves, which are connected to the cylinder shaft. The telescopic cylinder is designed to be inclined, with an inclination angle ranging from 80 degrees to 45 degrees.

[0015] In a preferred embodiment of this application, the extension and retraction direction of the telescopic cylinder is consistent with the flipping direction of the sealed furnace cover, thereby realizing the automatic opening and closing of the sealed furnace cover and opening the furnace nozzle through the extension and retraction of the telescopic cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The telescopic cylinder is controlled by a control device to automatically open and close the sealed furnace cover, eliminating the need for manual operation, thus improving work efficiency and reducing labor intensity. At the same time, it can precisely control the timing of opening and closing the furnace cover, facilitating the addition and removal of furnace materials and making the operation process smoother.

[0018] It can tightly seal the opening at the top of the furnace body, effectively preventing heat loss from the furnace and maintaining a stable temperature inside the furnace. This provides a stable environmental condition for the resin sand process and improves the process quality. At the same time, it can also prevent impurities and dust from entering the furnace, avoiding contamination of the materials inside the furnace and ensuring the purity of the product.

[0019] The automatic lid opening system works in conjunction with the sealed furnace lid. When it is necessary to add or remove furnace material, the automatic lid opening system can quickly and accurately open the sealed furnace lid and furnace nozzle for convenient operation. After adding or removing furnace material, it can quickly close the sealed furnace lid to ensure that the furnace environment quickly returns to a stable state. This not only ensures the convenience of operation, but also minimizes the time that the furnace environment is affected by external interference, which is conducive to the stable operation of the resin sand process and improves production efficiency and product quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a diagram illustrating the inclined support plate of this utility model;

[0022] Figure 3 This is a diagram showing the furnace frame of this utility model;

[0023] Figure 4 This is a cross-sectional view of the sealed furnace cover of this utility model;

[0024] Figure 5 This is a cross-sectional view of the cylinder base and cylinder top seat of this utility model.

[0025] In the diagram: 1. Sealed furnace cover; 11. Furnace cover body; 12. Furnace nozzle; 13. Hook; 15. Furnace ear; 2. Furnace body; 3. Platform; 4. Furnace frame; 5. Diagonal brace plate; 6. Hydraulic cylinder base; 7. Base plate; 8. Support shaft; 9. Connecting steel frame; 10. Telescopic hydraulic cylinder; 10A. Hydraulic cylinder shaft; 10B. Isolation sleeve; 10C. Quick-connect ring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 - Figure 5 As shown, a medium-frequency furnace adapted for resin sand processing includes a furnace body 2, a platform 3, and a furnace frame 4. Specifically, the furnace body 2 is installed inside the furnace frame 4, while the platform 3 is located at the upper part of the furnace frame 4. A sealing furnace cover 1 is designed at the upper end of the furnace body 2, which can achieve a tight seal on the upper opening of the furnace body 2, ensuring the stability of the furnace environment.

[0028] The side wall of the furnace frame 4 is provided with a diagonal brace 5, which, together with the bottom of the furnace frame 4, supports the base plate 7. Two hydraulic cylinder bases 6 are installed on the base plate 7 to fix one end of the telescopic hydraulic cylinder 10. Hydraulic cylinder top seats are provided on both sides of the sealed furnace cover 1, and the top seats are connected to the cylinder bases 6 via the telescopic hydraulic cylinder 10. The telescopic movement of the hydraulic cylinder 10 can drive the opening and closing of the sealed furnace cover 1. Furthermore, one side of the base plate 7 is connected to a support shaft 8 via a connecting steel frame 9. The main function of the support shaft 8 is to provide stable support for the platform 3.

[0029] The specific structure of the sealed furnace cover 1 includes a furnace cover body 11, a furnace nozzle 12, a hook 13, and furnace ears 15. The furnace cover body 11 is connected to the furnace body 2 via a hinge assembly. The furnace nozzle 12 is located at the discharge port of the furnace cover body 11. The hook 13 is hung on the furnace cover body 11 for easy operation. Furnace ears 15 are provided on both sides of the furnace cover body 11, and the furnace ears 15 are integrated with the furnace cover body 11. The end face of the furnace ears 15 has a through hole, and the oil cylinder top seat is fixed to the furnace ears 15 by bolts. The oil cylinder top seat and the oil cylinder base 6 have the same structural design.

[0030] Both the cylinder base 6 and the cylinder top seat consist of a support, a cylinder shaft 10A, an isolation sleeve 10B, and a quick-connect snap ring 10C. The support is bolted to the furnace ear 15 or the base plate 7, and the cylinder shaft 10A is mounted on the support via the isolation sleeve 10B and the quick-connect snap ring 10C, ensuring the stability and reliability of the connection.

[0031] Both the tail end and the telescopic end of the telescopic cylinder 10 are equipped with sleeves, which are connected to the cylinder shaft 10A. The telescopic cylinder 10 adopts an inclined design, with an inclination angle ranging from 80 degrees to 45 degrees to optimize its working performance. The telescopic direction of the telescopic cylinder 10 is consistent with the flipping direction of the sealed furnace cover 1. Through the telescopic movement of the telescopic cylinder 10, the sealed furnace cover 1 can be automatically opened and closed, and the opening of the furnace nozzle 12 can also be controlled, thereby facilitating the loading and unloading of furnace charge and the smooth operation of the process.

[0032] Install the furnace body 2 inside the furnace frame 4, ensuring its accurate and stable position. Next, place the platform 3 on the upper part of the furnace frame 4, ensuring a tight connection. Install diagonal bracing plates 5 on the side walls of the furnace frame 4. The diagonal bracing plates 5 and the lower bottom of the furnace frame 4 together support the base plate 7. Place the base plate 7 in the appropriate position and secure it. Install two hydraulic cylinder bases 6 on the base plate 7, fixing the supports to the base plate 7 with bolts. Then, install the hydraulic cylinder shaft 10A on the support through the isolation sleeve 10B and quick-connect circlip 10C, completing the assembly of the hydraulic cylinder base 6.

[0033] Install the sealed furnace cover 1. Connect the furnace cover body 11 to the furnace body 2 via a hinge assembly. Install the furnace nozzle 12 at the discharge port of the furnace cover body 11 and hang the hook 13 on the furnace cover body 11. Integrate furnace ears 15 on both sides of the furnace cover body 11 and make through holes on the end face of the furnace ears 15. Fix the support of the cylinder top seat to the furnace ears 15 with bolts. Similarly, install the cylinder shaft 10A on the support via the isolation sleeve 10B and quick-connect ring 10C to complete the assembly of the cylinder top seat. Connect the tail end and the sleeve of the telescopic cylinder 10 to the cylinder shaft 10A respectively, so that one end of the telescopic cylinder 10 is connected to the cylinder base 6 and the other end is connected to the cylinder top seat. The telescopic cylinder 10 adopts an inclined design with an inclination angle between 80 degrees and 45 degrees. Connect one side of the base plate 7 to the support shaft 8 via the connecting steel frame 9, so that the support shaft 8 provides stable support for the platform 3.

[0034] When using this medium-frequency furnace, prepare the furnace charge first. When it is necessary to add furnace charge, control the telescopic cylinder 10 to extend or retract. Since the extension and retraction direction of the telescopic cylinder 10 is consistent with the flipping direction of the sealing furnace cover 1, the retraction of the telescopic cylinder 10 will drive the sealing furnace cover 1 to open, and at the same time, it can also control the opening of the furnace nozzle 12. At this time, the furnace charge can be added into the furnace body 2 through the furnace nozzle 12. After adding the furnace charge, control the telescopic cylinder 10 to extend, driving the sealing furnace cover 1 to close. The sealing furnace cover 1 achieves a tight seal on the upper opening of the furnace body 2, ensuring a stable furnace environment, and then the relevant operations of the resin sand process are carried out. When it is necessary to remove the processed material from the furnace, control the telescopic cylinder 10 to retract again, opening the sealing furnace cover 1 and the furnace nozzle 12, and remove the material.

[0035] The control device is activated, sending a retraction command to the telescopic cylinder 10. The tail end and telescopic end of the telescopic cylinder 10 rotate around the cylinder shaft 10A. Due to the inclined design of the telescopic cylinder 10 and its connection to the sealed furnace cover 1, when the telescopic cylinder 10 retracts, it drives the cylinder top seat upwards. The cylinder top seat, through the furnace ear 15, drives the furnace cover body 11 to rotate around the hinge assembly, thereby automatically opening the sealed furnace cover 1. Simultaneously, the furnace nozzle 12 also opens, facilitating the addition or removal of furnace charge. When it is necessary to close the sealed furnace cover 1, an extension command is sent to the telescopic cylinder 10. The telescopic cylinder 10 extends, driving the cylinder top seat downwards, which in turn causes the furnace cover body 11 to rotate in the opposite direction around the hinge assembly, thus automatically closing the sealed furnace cover 1.

[0036] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A medium-frequency furnace adapted for resin sand processing, comprising a furnace body (2), a platform (3), and a furnace frame (4), wherein the furnace body (2) is installed within the frame of the furnace frame (4), and the platform (3) is located at the upper end of the furnace frame (4), characterized in that: The upper end of the furnace body (2) is provided with a sealing furnace cover (1), which seals the opening at the upper end of the furnace body (2). The side wall of the furnace frame (4) is provided with a diagonal brace (5), and the bottom of the diagonal brace (5) and the furnace frame (4) is provided with a base plate (7). Two oil cylinder bases (6) are installed on the base plate (7). Oil cylinder top seats are provided on both sides of the sealed furnace cover (1). A telescopic oil cylinder (10) is connected between the oil cylinder top seat and the oil cylinder base (6). The telescopic oil cylinder (10) drives the opening and closing of the sealed furnace cover (1). A support shaft (8) is connected to one side of the base plate (7) through a connecting steel frame (9). The support shaft (8) supports the platform (3).

2. The medium frequency furnace adapted for resin bonded sand process as claimed in claim 1 wherein: The sealed furnace cover (1) includes a furnace cover body (11), a furnace nozzle (12), a hook (13), and furnace ears (15). The furnace cover body (11) is connected to the furnace body (2) by a hinge assembly. The furnace nozzle (12) is placed at the discharge port of the furnace cover body (11). The hook (13) is hung on the furnace cover body (11). Furnace ears (15) are provided on both sides of the furnace cover body (11).

3. The medium frequency furnace adapted for resin bonded sand process according to claim 2, characterized in that: The furnace ear (15) is integrated with the furnace cover (11), and the end face of the furnace ear (15) is provided with a through hole. The oil cylinder top seat is installed on the furnace ear (15) by bolts. The oil cylinder top seat and the oil cylinder base (6) have the same structure.

4. The medium frequency furnace adapted for resin bonded sand process according to claim 3, characterized in that: The cylinder base (6) and cylinder top seat both include a support, a cylinder shaft (10A), an isolation sleeve (10B), and a quick-connect snap ring (10C). The support is bolted to the furnace ear (15) or the base plate (7). The cylinder shaft (10A) is mounted on the support through the isolation sleeve (10B) and the quick-connect snap ring (10C).

5. A medium frequency furnace adapted for resin bonded sand process as claimed in claim 4, wherein: The telescopic cylinder (10) is equipped with a sleeve at both the tail end and the telescopic end, and is connected to the cylinder shaft (10A) through the sleeve. The telescopic cylinder (10) is designed to be inclined, and the inclination angle ranges from 80 degrees to 45 degrees.

6. A medium frequency furnace adapted for resin bonded sand process as claimed in claim 5 wherein: The telescopic cylinder (10) extends in the same direction as the rotating direction of the sealed furnace cover (1). The telescopic cylinder (10) extends and retracts to achieve automatic opening and closing of the sealed furnace cover (1) and open the furnace nozzle (12).

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