Movable gravity core heating machine

Abstract

The utility model discloses a movable gravity hot core machine which comprises a base, rollers are arranged at the bottom of the base, an internal combustion engine air compressor and a machine body are arranged on the base, a fixed die and a movable die are arranged in the machine body, a cavity is formed between the movable die and the fixed die, and a gravity cavity is formed between the upper portion of the movable die and the machine body. A pushing cylinder for driving the movable mold to move up and down is arranged on the machine body; each of the fixed mold and the movable mold comprises a cavity plate and a heating plate, a heat flow cavity is formed in each heating plate, the internal combustion engine air compressor is communicated with the heat flow cavities through a first air flow pipe, and the internal combustion engine air compressor is communicated with the gravity cavity through a second air flow pipe. The mold core forming device has the characteristics of movability, high mold core forming speed and high mold core forming quality.

Description

Technical Field

[0001] This utility model relates to a heat core machine, and more particularly to a mobile gravity heat core machine. Background Technology

[0002] A hot core machine is a type of casting equipment used to manufacture mold cores. Existing hot core machines include a base, core box, sand supply system, heating system, clamping cylinder, moving mold plate, and stationary mold plate. The sand supply system injects a mixture of casting sand, thermosetting resin, and curing agent into the cavity between the moving and stationary mold plates. The heating system heats the core box to 180-250°C. When the sand is heated, its binder condenses and hardens in a very short time under the influence of temperature, forming the mold core.

[0003] The heating system typically uses resistance heating tubes to heat the core box, ensuring that the sand core inside the core box can harden quickly. However, the heating method of resistance heating tubes is not uniform enough for the hot core, and the power consumption is high. Moreover, the equipment can only heat the core at a fixed point and cannot be moved. The completed core needs to be transferred to other workstations for assembly with other parts. If the distance between the workstations is far, a certain amount of time will be consumed during this process, which can easily lead to the core cooling and cracking, affecting the core quality. Utility Model Content

[0004] The purpose of this invention is to provide a mobile gravity-fed hot core forming machine. This invention features mobility, fast core forming speed, and high quality.

[0005] The technical solution of this utility model is as follows: a mobile gravity heating core machine includes a base, with rollers at the bottom of the base, an internal combustion engine air compressor and a body on the base, a fixed mold and a moving mold inside the body, forming a cavity between the moving mold and the fixed mold, and a gravity cavity between the upper part of the moving mold and the body, and a push cylinder on the body to drive the moving mold to move up and down; both the fixed mold and the moving mold include a cavity plate and a heating plate, with a heat flow cavity inside the heating plate, the internal combustion engine air compressor being connected to the heat flow cavity through a first air flow pipe, and the internal combustion engine air compressor being connected to the gravity cavity through a second air flow pipe.

[0006] In the aforementioned mobile gravity heating core machine, the machine body and heating plate are also provided with exhaust ports, and control valves are provided on the exhaust ports.

[0007] In the aforementioned mobile gravity heating core machine, the fixed mold and the moving mold are also equipped with auxiliary heating devices.

[0008] In the aforementioned mobile gravity hot core machine, the auxiliary heating device includes a temperature regulating plate that can be detachably installed between the cavity plate and the heating plate. The temperature regulating plate is provided with a number of mounting grooves distributed along the length direction of the fixed mold and the moving mold, and heating tubes are provided in the mounting grooves.

[0009] In the aforementioned mobile gravity hot core machine, the machine body is provided with guide pillars that extend into the moving mold. The moving mold moves up and down along the guide pillars and closes with the fixed mold to shape and make the core.

[0010] In the aforementioned mobile gravity heating core machine, the inner wall of the machine body is provided with a heat insulation layer, the inner wall of the heat insulation layer is provided with a support layer, the inside of the support layer is provided with a deformation layer, and the outer wall of the machine body is provided with a heat insulation layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The hot core machine of this utility model places the machine body and the internal combustion engine air compressor on the base. The base can move freely through the rollers, so the hot core machine can be moved directly to other workstations. After the hot core is formed, there is no need to wait, and it can be used directly with the parts produced on other workstations, reducing transfer time and avoiding the situation of core cooling and cracking.

[0013] During the hot core process, air is compressed in the internal combustion engine air compressor to form high-temperature compressed air. This compressed air enters the hot flow chamber through the first airflow pipe, transferring heat to the sand core in the mold cavity. This process heats and shapes both sides of the sand core, ensuring the required temperature for the hot core while improving heating uniformity and hardening speed, increasing work efficiency, and reducing power consumption. Furthermore, the high density of the compressed air allows it to enter the gravity chamber through the second airflow pipe, increasing the pressure in the gravity chamber. This increases the downward force and pressure of the moving mold, which, combined with the drive of the cylinder, increases the clamping force on the core, accelerates the core forming speed, effectively reduces porosity in the core, and improves the core's density and quality.

[0014] Therefore, this utility model has the characteristics of being movable, having a fast core forming speed, and high quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the fixed mold structure.

[0017] Figure 3 This is a schematic diagram of the body's wall structure.

[0018] The labels in the attached diagram are as follows: 1. Base; 11. Roller; 2. Internal combustion engine air compressor; 21. First airflow pipe; 22. Second airflow pipe; 3. Engine body; 31. Fixed mold; 32. Moving mold; 33. Gravity cavity; 34. Push cylinder; 35. Exhaust port; 36. Guide column; 41. Cavity plate; 42. Heating plate; 43. Hot flow cavity; 44. Temperature regulating plate; 45. Heating tube; 51. Insulation layer; 52. Support layer; 53. Deformation layer; 54. Heat insulation layer. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0021] Example:

[0022] like Figures 1-3 As shown, a mobile gravity heat core machine includes a base 1, with rollers 11 at the bottom of the base 1. An internal combustion engine air compressor 2 and a body 3 are mounted on the base 1. The body 3 has a fixed mold 31 and a moving mold 32 inside, forming a cavity between the moving mold 32 and the fixed mold 31. A gravity cavity 33 is formed between the moving mold 32 and the body 3. The body 3 has a push cylinder 34 that drives the moving mold 32 to move up and down. Both the fixed mold 31 and the moving mold 32 include a cavity plate 41 and a heating plate 42. The heating plate 42 has a heat flow cavity 43 inside. The internal combustion engine air compressor 2 is connected to the heat flow cavity 43 through a first air flow pipe 21 and to the gravity cavity 33 through a second air flow pipe 22.

[0023] The hot core machine of this utility model places the machine body 3 and the internal combustion engine air compressor 2 on the base 1. The base 1 can move freely through the rollers 11, so that the hot core machine can be moved directly to other work stations. After the hot core is formed, there is no need to wait, and it can be used directly with the parts made on other work stations, reducing the transfer time and avoiding the situation of core cooling and cracking.

[0024] During the hot core process, air is compressed in the internal combustion engine air compressor 2 to form compressed air, which increases in temperature. It then enters the hot flow chamber 43 through the first airflow pipe 21 to heat the fixed mold 31 and the moving mold 32, transferring heat to the sand core in the cavity. This provides simultaneous heating and shaping for both sides of the sand core, ensuring the required temperature for the hot core while improving heating uniformity and hardening speed, increasing work efficiency, and reducing power consumption. Furthermore, the high density of the compressed air allows it to enter the gravity chamber 33 through the second airflow pipe 22, increasing the pressure in the gravity chamber 33. This increases the downward force and pressure of the moving mold 32, which, in conjunction with the drive of the cylinder 34, increases the clamping force on the core, accelerates the core forming speed, effectively reduces porosity in the core, and improves the core's density and quality.

[0025] The engine body 3 and the heating plate 42 are also equipped with exhaust ports 35, and control valves are installed on the exhaust ports 35. The exhaust port 35 on the engine body 3 is connected to the heat flow chamber 43; the exhaust port 35 on the heating plate 42 is also connected to the heat flow chamber 43. After the heating core is completed, compressed air is discharged through the exhaust port 35, and the discharged compressed air can be recycled by the internal combustion engine air compressor 2.

[0026] The fixed mold 31 and the moving mold 32 are also equipped with auxiliary heating devices. The auxiliary heating devices can further control the heating position and temperature of the core, thereby improving the accuracy of heating control.

[0027] The auxiliary heating device includes a temperature regulating plate 44 detachably installed between the cavity plate 41 and the heating plate 42. The temperature regulating plate 44 has several mounting grooves distributed along the length of the fixed mold 31 and the moving mold 32, and heating tubes 45 are installed within these grooves. Depending on the core's structural layout, the heating tubes can individually control the parts of the core that require heating, such as increasing the heating temperature or time for thicker sections of the core, thereby better heating the core and improving the core molding quality and yield. The temperature regulating plate 44 can be detachably connected to the cavity plate 41 and the heating plate 42 via bolts or snap-fit ​​connections, facilitating future maintenance and replacement.

[0028] The body 3 has a guide post 36 extending into the moving mold 32. The moving mold 32 moves up and down along the guide post 36 and closes with the fixed mold 31 to shape and form the core. The moving mold 32 improves the stability and accuracy of its movement through the guidance of the guide post 36.

[0029] The inner wall of the body 3 is provided with a heat insulation layer 51, the inner wall of the heat insulation layer 51 is provided with a support layer 52, the inside of the support layer 52 is provided with a deformation layer 53, and the outer wall of the body 3 is provided with a heat insulation layer 54.

[0030] The insulation layer 51 is used to retain heat inside the body 3 and reduce heat loss. The deformation layer 53 is used to buffer the pressure of compressed air in the gravity cavity 33 on the inner wall of the body 3, preventing excessive pressure from causing deformation damage to the body 3. The support layer 52 is used to stabilize the structure of the deformation layer 53 and the insulation layer 51, so that the deformation layer 53 and the insulation layer 51 can function properly. The heat insulation layer 54 isolates the heat inside the body 3 to a certain extent, preventing injury to personnel when removing the core.

[0031] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.

Claims

1. A mobile gravity core machine, characterized in that: The utility model provides a kind of internal combustion engine air compressor and machine body (3) are equipped on the base (1) of including base (1), the bottom of base (1) is equipped with gyro wheel (11), the inside of machine body (3) is equipped with fixed mould (31) and movable mould (32), movable mould (32) and fixed mould (31) form cavity between them, the upper portion of movable mould (32) and machine body (3) form gravity cavity (33), machine body (3) is equipped with push cylinder (34) for driving movable mould (32) to move up and down;The fixed mould (31) and movable mould (32) all include cavity plate (41) and heating plate (42), the inside of heating plate (42) is equipped with heat flow cavity (43), internal combustion engine air compressor (2) is communicated with heat flow cavity (43) by first airflow pipe (21), internal combustion engine air compressor (2) is communicated with gravity cavity (33) by second airflow pipe (22).

2. The mobile gravity core machine of claim 1, wherein: The machine body (3) and heating plate (42) are further provided with an exhaust port (35), and the exhaust port (35) is provided with a control valve.

3. The mobile gravity core machine of claim 1, wherein: The fixed mould (31) and movable mould (32) are further provided with auxiliary heating devices.

4. The mobile gravity core machine of claim 3, wherein: The auxiliary heating device includes a temperature adjusting plate (44) detachably installed between the cavity plate (41) and the heating plate (42), the temperature adjusting plate (44) is provided with a plurality of installation grooves distributed along the length direction of the fixed mould (31) and the movable mould (32), and the installation grooves are provided with heating pipes (45).

5. The mobile gravity core machine of claim 1, wherein: The machine body (3) is provided with a guide column (36) extending into the movable mould (32), and the movable mould (32) moves up and down along the guide column (36) to combine with the fixed mould (31) to perform molding and core making.

6. The mobile gravity core machine of claim 1, wherein: The inner wall of the machine body (3) is provided with a heat preservation layer (51), the inner wall of the heat preservation layer (51) is provided with a support layer (52), the inside of the support layer (52) is provided with a deformation layer (53), and the outer wall of the machine body (3) is provided with a heat insulation layer (54).

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