A heating device for preheating cast iron pot molds with multi-temperature zone circulation

Abstract

This utility model relates to the field of cast iron pot mold technology and discloses a multi-temperature zone circulating preheating heating device for cast iron pot molds. It includes a base, with support columns symmetrically fixedly connected to the top of the base in all directions. A fixed seat is fixedly connected to the top of each of the four support columns. A pressing and heating mechanism is provided on the top of the base. Multi-temperature zone differentiated heating is achieved through a combination of an electromagnetic induction coil and an infrared radiation heating tube. The electromagnetic induction coil is arranged between the bottom of the lower mold base and the inner mold, using the principle of electromagnetic induction to rapidly heat the bottom of the mold, suitable for efficient heating of thick-walled parts of the cast iron pot mold. The infrared radiation heating tube is located between the lower mold base and the inner mold, above the heat insulation ring, and can uniformly radiate heat to the sidewalls of the mold. The combined effect of these two methods significantly shortens the preheating time compared to traditional single heating methods, while simultaneously meeting the temperature requirements of different parts of the mold, effectively improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cast iron pot mold technology, specifically a heating device for preheating cast iron pot molds with multi-temperature zone circulation. Background Technology

[0002] In the modern cookware manufacturing industry, cast iron pots are highly favored by the market due to their excellent thermal conductivity, heat retention, and durability. Optimizing their production process is crucial for improving product quality and production efficiency. Mold preheating, as a key process in cast iron pot casting, directly affects the filling capacity of molten iron, the cooling rate of the casting, and its internal structure. Improper mold preheating can easily lead to defects such as cold shuts, incomplete pouring, and shrinkage cavities, reducing the casting yield.

[0003] Traditional mold preheating methods often employ a single heating source, such as resistance wire heating or gas heating. These methods suffer from uneven heating, low temperature control precision, and high energy consumption. For example, resistance wire heating can easily damage the mold due to localized overheating, while gas heating poses safety hazards and environmental pollution problems. Furthermore, traditional heating methods struggle to achieve multi-temperature zone circulating heating, failing to meet the production needs of complex molds or high-precision castings. Utility Model Content

[0004] The purpose of this invention is to provide a heating device for preheating cast iron pot molds with multi-temperature zone circulation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heating device for preheating a multi-temperature zone circulating cast iron pot mold, comprising a base, with support columns symmetrically fixedly connected to the top of the base in the front, back, left, and right directions, and a fixed seat fixedly connected to the top of the four support columns, a mold heating mechanism provided on the top of the base, and a balancing mechanism provided on the top of the fixed seat.

[0006] The molding heating mechanism includes a lower mold base, which is fixedly connected to the top of the base. An inner mold is fixedly connected inside the lower mold base. A power controller is fixedly connected to the front top of the base. An electromagnetic induction coil is fixedly connected to the connection end of the power controller. A heat insulation ring is fixedly connected to the inner wall of the lower mold base near the bottom. A connector is fixedly connected to the surface of the lower mold base. An infrared radiation heating tube is fixedly connected to one end of the connector. A hydraulic cylinder is fixedly connected to the top of the fixed base. A lifting plate is fixedly connected to the output end of the hydraulic cylinder. Fixed columns are symmetrically fixedly connected to the bottom of the lifting plate. An upper mold base is fixedly connected to the bottom of the four fixed columns.

[0007] Preferably, the lower mold base has a hole near the bottom, and the surface of the electromagnetic induction coil passes through and is fixedly connected to the hole. The electromagnetic induction coil is located between the bottom of the inner wall of the lower mold base and the bottom of the inner mold.

[0008] Preferably, the inner ring of the heat insulation ring is fixedly connected to the inner and outer parts near the bottom.

[0009] Preferably, the infrared radiation heating tube is located inside the lower mold base and between the inner mold, and above the heat insulation ring.

[0010] Preferably, the other end of the connector is fixedly connected to the power controller connector via a wire.

[0011] Preferably, the balancing mechanism includes sliding cylinders, which are symmetrically and fixedly connected to the top of the fixed base. Cylindrical racks are slidably connected to the inner walls of the four sliding cylinders. Fixed frames are symmetrically and fixedly connected to the top of the fixed base. Rotating shafts are provided on the left and right sides of the inner walls of the two fixed frames near the top. Gears are symmetrically and fixedly connected to the surfaces of the rotating shafts near the left and right ends.

[0012] Preferably, the top of the fixed base has a hole that matches the cylindrical rack, and the surface of the cylindrical rack is penetrated and slidably connected to the hole, and the bottom ends of the four cylindrical racks are fixedly connected to the top of the lifting plate.

[0013] Preferably, the inner wall of the fixing frame has holes on the left and right sides near the top that match the rotating shaft, and the rotating shaft surface passes through and is rotatably connected to the hole, and the gear meshes with the cylindrical rack.

[0014] Preferably, the power controller is model SR900.

[0015] Preferably, the infrared radiation heating tube is of model JEB.

[0016] Compared with the prior art, this utility model provides a heating device for preheating cast iron pot molds with multi-temperature zone circulation, which has the following beneficial effects:

[0017] 1. This multi-temperature zone circulating preheating heating device for cast iron pot molds achieves differentiated heating in multiple temperature zones through a combination of electromagnetic induction coils and infrared radiation heating tubes. The electromagnetic induction coil is arranged between the bottom of the lower mold base and the inner mold, using the principle of electromagnetic induction to rapidly heat the bottom of the mold, which is suitable for efficient heating of thick-walled parts of cast iron pot molds. The infrared radiation heating tube is set between the lower mold base and the inner mold and above the heat insulation ring, which can uniformly radiate heat to the side walls of the mold. The synergistic effect of the two significantly shortens the preheating time compared to traditional single heating methods, while meeting the temperature requirements of different parts of the mold, effectively improving production efficiency.

[0018] 2. The heating device for preheating the multi-temperature zone circulating cast iron pot mold features a balancing mechanism that provides stable support during the mold opening and closing process. The meshing structure of the cylindrical rack and pinion, along with the guide of the cylindrical rack by the sliding cylinder, ensures balance when the lifting platen drives the upper mold base to rise and fall, preventing mold misalignment or jamming due to uneven force. This not only extends the equipment's service life but also ensures the mold's positional accuracy during preheating and pressing, improving the reliability and safety of the production process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the heating mechanism for the pressing mold of this utility model;

[0022] Figure 3 This is a three-dimensional cross-sectional view of the lower mold base and inner mold surface of the present invention.

[0023] Figure 4 This is a three-dimensional schematic diagram of the connector structure of this utility model;

[0024] Figure 5 This is a three-dimensional schematic diagram of the structural balancing mechanism of this utility model.

[0025] In the diagram: 1. Base; 2. Support column; 3. Fixed seat; 4. Pressing mold heating mechanism; 41. Lower mold base; 42. Inner mold; 43. Electromagnetic induction coil; 44. Power controller; 45. Heat insulation ring; 46. Connector; 47. Infrared radiation heating tube; 48. Hydraulic cylinder; 49. Lifting plate; 411. Fixed column; 412. Upper mold base; 5. Balancing mechanism; 51. Slide cylinder; 52. Cylindrical rack; 53. Fixed frame; 54. Rotating shaft; 55. Gear. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] This utility model provides the following technical solution:

[0029] Example 1

[0030] Please see Figure 1-4 This utility model provides a technical solution: a heating device for preheating cast iron pot mold with multi-temperature zone circulation, including a base 1, with support columns 2 symmetrically fixedly connected to the top of the base 1 in the front, back, left and right, and fixed seats 3 fixedly connected to the top of the four support columns 2, a mold heating mechanism 4 provided on the top of the base 1, and a balancing mechanism 5 provided on the top of the fixed seat 3.

[0031] The molding heating mechanism 4 includes a lower mold base 41, which is fixedly connected to the top of the base 1. An inner mold 42 is fixedly connected inside the lower mold base 41. A power controller 44 is fixedly connected to the top front of the base 1. An electromagnetic induction coil 43 is fixedly connected to the connection end of the power controller 44. A heat insulation ring 45 is fixedly connected to the inner wall of the lower mold base 41 near the bottom. A connector 46 is fixedly connected to the surface of the lower mold base 41. An infrared radiation heating tube 47 is fixedly connected to one end of the connector 46. A hydraulic cylinder 48 is fixedly connected to the top of the fixed base 3. A lifting plate 49 is fixedly connected to the output end of the hydraulic cylinder 48. Fixed columns 411 are symmetrically fixedly connected to the bottom of the lifting plate 49. An upper mold base 412 is fixedly connected to the bottom of the four fixed columns 411.

[0032] The lower mold base 41 has a hole near the bottom, and the surface of the electromagnetic induction coil 43 passes through and is fixedly connected to the hole. The electromagnetic induction coil 43 is located between the bottom of the inner wall of the lower mold base 41 and the bottom of the inner mold 42.

[0033] The inner ring of the heat insulation ring 45 is fixedly connected to the inner and outer parts near the bottom.

[0034] The infrared radiation heating tube 47 is located inside the lower mold base 41 and between the inner mold 42, and above the heat insulation ring 45.

[0035] The other end of connector 46 is fixedly connected to the power controller 44 connector via a wire.

[0036] Example 2

[0037] Please see Figure 5Furthermore, based on Example 1, a balancing mechanism 5 is obtained.

[0038] The balancing mechanism 5 includes a slide cylinder 51, which is symmetrically and fixedly connected to the top of the fixed base 3. The inner walls of the four slide cylinders 51 are slidably connected to cylindrical racks 52. The top of the fixed base 3 is symmetrically and fixedly connected to a fixed frame 53. The inner walls of the two fixed frames 53 are provided with rotating shafts 54 near the top on the left and right sides. The surfaces of the rotating shafts 54 are symmetrically and fixedly connected to gears 55 near the left and right ends.

[0039] The top of the fixed base 3 has a hole that matches the cylindrical rack 52, and the surface of the cylindrical rack 52 is penetrated and slidably connected to the hole. The bottom ends of the four cylindrical racks 52 are fixedly connected to the top of the lifting plate 49.

[0040] The inner walls of the fixed bracket 53 have holes on the left and right sides near the top that match the rotating shaft 54, and the rotating shaft 54 ​​passes through and is rotatably connected to the hole. The gear 55 meshes with the cylindrical rack 52.

[0041] In actual operation, when this device is in use and the cast iron pot mold is being preheated, the power controller 44 acts as the core control hub, transmitting electrical energy to the electromagnetic induction coil 43 and the infrared radiation heating tube 47. The electromagnetic induction coil 43 is installed between the bottom of the inner wall of the lower mold base 41 and the bottom of the inner mold 42. Utilizing the principle of electromagnetic induction, it generates an eddy current effect at the bottom of the mold, rapidly generating heat and efficiently heating the thick-walled bottom area of ​​the cast iron pot mold. The infrared radiation heating tube 47 is located inside the lower mold base 41 and between the inner mold 42, above the heat insulation ring 45. It uniformly heats the sidewalls of the mold through infrared radiation. The two work together to form a multi-temperature zone heating mode, achieving precise and efficient preheating for different parts of the mold. At the same time, the heat insulation ring 45 blocks the upward conduction of heat from the bottom of the lower mold base 41, reducing heat loss, ensuring stable temperature of the mold sidewalls, and avoiding the impact of heat crosstalk on the heating effect. When the mold needs to be opened or closed, the hydraulic cylinder 48 on the top of the fixed base 3 starts to work. The output end of the hydraulic cylinder 48 drives the lifting plate 49 to move up and down. The lifting plate 49 drives the upper mold base 412 to move synchronously through the fixed column 411. When the hydraulic cylinder 48 retracts, the upper mold base 412 rises, opening the mold to facilitate the insertion or removal of the cast iron pot mold. When the hydraulic cylinder 48 extends, the upper mold base 412 descends and closes with the lower mold base 41, preparing for the subsequent preheating and molding processes.

[0042] During the mold opening and closing process, the balancing mechanism 5 plays a stabilizing role. Four sliding cylinders 51 are symmetrically fixed to the top of the fixed base 3, and the cylindrical rack 52 slides up and down on the inner wall of the sliding cylinders 51, with its bottom end fixedly connected to the top of the lifting plate 49. When the lifting plate 49 is driven up and down by the hydraulic cylinder 48, it drives the cylindrical rack 52 to move synchronously. At the same time, the gear 55 fixed on the rotating shaft 54 ​​inside the fixed frame 53 meshes with the cylindrical rack 52. The gear 55 rotates around the rotating shaft 54 ​​under the drive of the cylindrical rack 52. Through the transmission between the gear 55 and the rack, the lifting force of the lifting plate 49 is evenly distributed, ensuring that the lifting plate 49 lifts and lowers smoothly, avoiding mold misalignment or jamming due to uneven force, and ensuring the stability and reliability of the entire device.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" 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 thereof 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. Without further limitations, 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 said element.

Claims

1. A heating device for preheating a cast iron pan mold for multi-temperature zone circulation, comprising a base (1), characterized in that: The base (1) has symmetrical support columns (2) fixedly connected to the top of the base (1) in the front, back, left and right directions. The top of the four support columns (2) is fixedly connected to the fixed seat (3). The base (1) is provided with a molding heating mechanism (4). The fixed seat (3) is provided with a balancing mechanism (5). The molding heating mechanism (4) includes a lower mold base (41), which is fixedly connected to the top of the base (1). An inner mold (42) is fixedly connected inside the lower mold base (41). A power controller (44) is fixedly connected to the front top of the base (1). An electromagnetic induction coil (43) is fixedly connected to the connection end of the power controller (44). A heat insulation ring (45) is fixedly connected to the inner wall of the lower mold base (41) near the bottom. A connector (46) is fixedly connected to the surface of the lower mold base (41). An infrared radiation heating tube (47) is fixedly connected to one end of the connector (46). A hydraulic cylinder (48) is fixedly connected to the top of the fixed base (3). A lifting plate (49) is fixedly connected to the output end of the hydraulic cylinder (48). Fixed columns (411) are fixedly connected symmetrically to the bottom of the lifting plate (49). An upper mold base (412) is fixedly connected to the bottom of the four fixed columns (411).

2. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 1, characterized in that: The lower mold base (41) has a hole near the bottom, and the surface of the electromagnetic induction coil (43) is penetrated and fixedly connected to the hole. The electromagnetic induction coil (43) is located between the bottom of the inner wall of the lower mold base (41) and the bottom of the inner mold (42).

3. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 1, characterized in that: The inner ring of the heat insulation ring (45) is fixedly connected to the inner and outer parts near the bottom.

4. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 1, characterized in that: The infrared radiation heating tube (47) is located inside the lower mold base (41) and between the inner mold (42), and above the heat insulation ring (45).

5. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 1, characterized in that: The other end of the connector (46) is fixedly connected to the power controller (44) connector via a wire.

6. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 1, characterized in that: The balancing mechanism (5) includes a slide cylinder (51), which is symmetrically and fixedly connected to the top of the fixed base (3) in the front, back and left and right. The inner walls of the four slide cylinders (51) are slidably connected with cylindrical racks (52). The top of the fixed base (3) is symmetrically and fixedly connected with a fixed frame (53). The inner walls of the two fixed frames (53) are provided with rotating shafts (54) near the top on the left and right sides. The rotating shafts (54) are symmetrically and fixedly connected with gears (55) near the left and right ends on the surface of the rotating shafts (54).

7. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 6, characterized in that: The top of the fixed base (3) is provided with a hole that matches the cylindrical rack (52), and the surface of the cylindrical rack (52) is penetrated and slidably connected to the hole. The bottom ends of the four cylindrical racks (52) are fixedly connected to the top of the lifting plate (49).

8. The heating device for preheating a multi-temperature zone circulating cast iron pot mold according to claim 6, characterized in that: The inner walls of the fixed frame (53) are provided with holes on the left and right sides near the top that match the rotating shaft (54), and the rotating shaft (54) is rotatably connected to the hole through the surface. The gear (55) meshes with the cylindrical rack (52).

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