Sand mold heating device of metal model

Abstract

The utility model discloses a sand mold heating device of a metal model, which relates to the technical field of sand mold heating and comprises a heating box shell, a supporting plate is fixedly mounted in the heating box shell, connecting pieces are fixedly mounted at the top corners of the supporting plate, and an electric heating wire is fixedly connected between every two connecting pieces. The bottom face of the bottom connecting piece is connected with a connecting line, and the bottom end of the connecting line is fixedly connected with a controller. According to the sand mold heating device of the metal model, the electric heating wires are arranged on the supporting plate at equal intervals, rapid heating can be conducted, and therefore generated heat can be conveniently conveyed in cooperation with airflow generated by fan blades, and the interior of a sand mold can be effectively heated and cured in cooperation with a connecting pipe through discharging of a flow collecting base and a connector; and by arranging a first filter screen and a second filter screen, dust can be prevented from entering the heating box shell to damage the electric heating wire, and the dustproof effect of the sand mold heating device of the metal model is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand mold heating, in particular to a sand mold heating device for a metal model. Background Art

[0002] In the process of making metal models or large castings, furan resin sand molds are needed. However, furan resin sand molds are easily affected by external environmental factors such as temperature and humidity and may produce defects such as shrinkage cavities, shrinkage, and even changes in chemical composition. Therefore, a sand mold heating device is needed to heat the sand mold to improve the strength of the sand mold. However, the existing sand mold heating device still has certain defects during use.

[0003] For example, a sand mold heating device proposed in application number CN202321371186.2 includes a fan, a shell, and a heating module; a slow flow portion is provided at one end of the shell and a collecting portion is provided at the other end; the slow flow portion and the collecting portion are both in the shape of an isosceles trapezoid; an air inlet pipe is provided at the end of the slow flow portion; an air outlet pipe is provided at the end of the collecting portion; the air inlet is connected to the wind output end of the fan; the heating module is fixed inside the shell. During actual use, the slow flow portion of the heating device allows the wind to pass through all the heating plates, thereby improving the stability of the hot air temperature, and the slow flow portion reduces the wind speed, thereby lengthening the time the wind passes through the heating plates, thereby improving the hot air conversion efficiency of the heating device. However, during the external exhaust process of the fan, dust in the environment will be drawn into the shell, causing damage to the heating module. At the same time, when the internal heating module is damaged or needs to be cleaned, it is inconvenient to disassemble and assemble, reducing the convenience of cleaning and maintenance.

[0004] Therefore, we propose a sand mold heating device for a metal model to solve the problems raised above. Utility Model Content

[0005] The purpose of the utility model is to provide a sand mold heating device for a metal model, so as to solve the problems in the above background technology that dust intrusion easily causes damage and is inconvenient for disassembly and assembly, which reduces the convenience of cleaning and maintenance.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: a sand mold heating device for a metal model, comprising a heating box housing,

[0007] A support plate is fixedly installed inside the heating box shell, and connecting plates are fixedly installed at the top corners of the support plate. Electric heating wires are fixedly connected between the connecting plates. The bottom surface of the connecting plate is connected to a connecting wire. The bottom end of the connecting wire is fixedly connected to a controller. The controller is fixedly connected to the bottom surface of the heating box shell, and support legs are symmetrically installed on both sides of the bottom of the controller.

[0008] A movable frame is movably mounted on the rear end of the heating box housing, and an air supply mechanism is mounted inside the movable frame;

[0009] A current collecting seat is movably mounted on the front end of the heating box housing, a second filter is movably mounted inside the current collecting seat, and a connector is mounted on the front end of the current collecting seat;

[0010] The air supply mechanism and the current collecting seat are connected to the heating box shell through a positioning and disassembly mechanism.

[0011] Preferably, the electric heating wires are distributed at equal intervals on the connecting piece, and the connecting heads are distributed at equal angles at the front end of the current collecting seat.

[0012] The above-mentioned structural design enables the equally spaced distribution of the electric heating wires to quickly heat up the inside of the heating box shell, thereby improving the subsequent heating efficiency. The equally spaced distribution of the connecting heads also facilitates the connection of multiple sets of connecting pipes and can heat and cure the inside of the sand molds of multiple sets of metal models, further improving the heating efficiency.

[0013] Preferably, the air supply mechanism includes a first filter fixedly mounted on the inner side of the movable frame, the rear end of the movable frame is fixedly connected to a limit frame, the inner ring of the limit frame is rotatably connected to a rotating shaft, the inner ring of the rotating shaft is fixedly connected to fan blades, the center of the fan blades is connected to a drive motor, connecting frames are fixedly mounted on both sides of the drive motor, and the connecting frames are fixedly connected to the limit frame.

[0014] Preferably, the fan blades are rotatably connected to the limit frame via a rotating shaft, and the fan blades are distributed at equal angles between the rotating shaft and the shaft end of the drive motor.

[0015] The above-mentioned structural design facilitates the transportation of heat to the inside of the heating box shell through the air supply mechanism, thereby improving the transportation efficiency. The setting of the first filter in the air supply mechanism can prevent dust from being transported into the inside of the heating box shell during the exhaust process and causing damage to the electric heating wire, thereby improving the use effect and dust-proof effect of the sand mold heating device of the metal model.

[0016] Preferably, the positioning and disassembly mechanism includes a connecting plate fixedly installed on both sides of the movable frame and the collecting seat, and a snap-fit ​​groove is provided inside the connecting plate. Fixed shafts are fixedly installed on both sides of the heating box shell, and the inner ring of the fixed shaft is connected to a screw. The end of the screw away from the fixed shaft is fixedly sleeved with a knob, and the outer ring of the screw is threadedly sleeved with a linkage plate. The middle part of the two ends of the linkage plate slides through the limiting block, and one end of the limiting block is fixedly connected to the heating box shell. The two ends of the linkage plate are fixedly installed with snap-fit ​​blocks on the outside, and docking grooves are symmetrically provided on both sides of the heating box shell.

[0017] Preferably, the screw rod cooperates with the limiting block and the linkage plate to form a limiting thread transmission structure, and the linkage plate drives the engaging block to form a movable engaging structure with the docking groove and the engaging groove.

[0018] The above-mentioned structural design facilitates the disassembly and installation of the movable frame and the current collecting seat through the positioning and disassembly mechanism, thereby facilitating the repair of the damaged electric heating wire inside the heating box shell during disassembly, and enabling convenient cleaning of the inside of the air supply mechanism, the inside of the heating box shell and the inside of the current collecting seat, thereby improving the convenience of disassembly and cleaning operations.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the sand mold heating device of the metal model;

[0020] 1. Electric heating wires are arranged at equal intervals on the support plate to quickly heat up, so that the airflow generated by the fan blades can transport the generated heat, and can be discharged through the collector and the connector to cooperate with the connecting pipe to effectively heat and solidify the inside of the sand mold. The arrangement of the first filter and the second filter can prevent dust from entering the inner shell of the heating box and causing damage to the electric heating wire, thereby improving the dust-proof effect of the sand mold heating device of the metal model;

[0021] 2. The setting of the positioning and disassembly mechanism facilitates the positioning, installation and disassembly of the movable frame and the current collecting seat, so that when the electric heating wire inside the heating box shell is damaged or the inside of the heating box shell needs to be cleaned, it is conducive to convenient maintenance and cleaning by disassembling the movable frame and the current collecting seat. At the same time, after the movable frame and the current collecting seat are disassembled, the first filter screen and the second filter screen can be conveniently cleaned, thereby improving the convenience of disassembly, maintenance and cleaning of the sand mold heating device of the metal model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a side view structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the heating box housing, movable frame and current collecting seat of the utility model;

[0024] Figure 3 This is a schematic diagram of the distribution structure of the electric heating wire on the support plate of the utility model;

[0025] Figure 4 This is a schematic diagram of the side cross-section structure of the movable frame, the first filter screen and the limiting frame of the utility model;

[0026] Figure 5 This is a schematic diagram of the side section of the current collecting seat and the exploded structure of the second filter screen of the utility model;

[0027] Figure 6This is a schematic diagram of the structure in which the fixed shaft and the heating box shell are separated in the present utility model.

[0028] In the figure: 1. Heating box shell; 2. Support plate; 3. Connecting piece; 4. Electric heating wire; 5. Connecting line; 6. Controller; 7. Support leg; 8. Movable frame; 9. First filter; 10. Limiting frame; 11. Rotating shaft; 12. Fan blade; 13. Driving motor; 14. Connecting frame; 15. Collecting seat; 16. Second filter; 17. Connecting head; 18. Connecting plate; 19. Engaging groove; 20. Fixed shaft; 21. Screw; 22. Knob; 23. Linkage plate; 24. Limiting block; 25. Engaging block; 26. Docking groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-6 The utility model provides a technical solution: a sand mold heating device for a metal model, comprising a heating box shell 1, a support plate 2 fixedly installed inside the heating box shell 1, a connecting piece 3 fixedly installed at the top corner of the support plate 2, electric heating wires 4 fixedly connected between two connecting pieces 3, the electric heating wires 4 are evenly spaced on the connecting pieces 3, a connecting wire 5 is connected to the bottom surface of the bottom connecting piece 3, a controller 6 is fixedly connected to the bottom end of the connecting wire 5, the controller 6 is fixedly connected to the bottom surface of the heating box shell 1, and support legs 7 are symmetrically installed on both sides of the bottom of the controller 6;

[0031] The design of the above structure enables the controller 6 to cooperate with the connecting wire 5 to turn on and off the heating work of the electric heating wire 4, and the setting of the connecting piece 3 can electrically connect the electric heating wires 4. The setting of the support plate 2 can stably support and install the connecting piece 3 and the electric heating wire 4, so that the electric heating wires 4 arranged at equal intervals can quickly heat up the inside of the heating box shell 1, thereby improving the efficiency of subsequent heating work.

[0032] A movable frame 8 is movably installed at the rear end of the heating box shell 1, and an air supply mechanism is installed inside the movable frame 8. The air supply mechanism includes a first filter 9 fixedly installed on the inner side of the movable frame 8. The rear end of the movable frame 8 is fixedly connected to a limit frame 10. The inner ring of the limit frame 10 is rotatably connected to a rotating shaft 11. The inner ring of the rotating shaft 11 is fixedly connected to fan blades 12. The center of the fan blades 12 is connected to a driving motor 13. The fan blades 12 are rotatably connected to the limit frame 10 through the rotating shaft 11. The fan blades 12 are distributed at equal angles between the rotating shaft 11 and the shaft ends of the driving motor 13. Connecting frames 14 are fixedly installed on both sides of the driving motor 13, and the connecting frames 14 are fixedly connected to the limit frame 10. A current collector 15 is movably installed at the front end of the heating box shell 1. A second filter 16 is movably installed inside the current collector 15, and a connector 17 is installed at the front end of the current collector 15.

[0033] The design of the above structure enables the connecting tube to be fixedly connected to the front end connector 17 during heating, and the other end of the connecting tube can be inserted into the interior of the metal model sand mold. At this time, the drive motor 13 can be turned on by the controller 6, so that the drive motor 13 drives the fan blades 12 to cooperate with the rotating shaft 11 to rotate inside the limit frame 10. When the fan blades 12 rotate, thrust will be generated to discharge the heat inside the heating box shell 1 through the collector 15, the connector 17 and the connecting tube, thereby heating and curing the interior of the metal model sand mold. The setting of the first filter 9 can prevent the fan blades 12 from drawing external debris and dust into the interior of the heating box shell 1 during exhaust, causing damage to the electric heating wire 4, and the setting of the second filter 16 can prevent dust from entering the interior of the heating box shell 1 through the connector 17 and the collector 15, causing damage to the electric heating wire 4, thereby improving the dustproof effect.

[0034] The air supply mechanism and the collecting seat 15 are connected to the heating box shell 1 through a positioning and disassembly mechanism. The positioning and disassembly mechanism includes a connecting plate 18 fixedly installed on both sides of the movable frame 8 and the collecting seat 15. A locking groove 19 is provided inside the connecting plate 18. Fixed shafts 20 are fixedly installed on both sides of the heating box shell 1. The inner circle of the fixed shaft 20 is connected to a screw 21. The end of the screw 21 away from the fixed shaft 20 is fixedly sleeved with a knob 22. The outer circle of the screw 21 is threadedly sleeved with a linkage plate 23. The middle parts of both ends of the linkage plate 23 slide through the limiting block 24. One end of the limiting block 24 is fixedly connected to the heating box shell 1. The screw 21 cooperates with the limiting block 24 and the linkage plate 23 to form a limiting thread transmission structure. The two ends of the linkage plate 23 are fixedly installed with locking blocks 25. The two sides of the heating box shell 1 are symmetrically provided with docking grooves 26. The linkage plate 23 drives the locking block 25 to form a movable locking structure with the docking groove 26 and the locking groove 19;

[0035] The design of the above structure enables the rotation of the knob 22 to drive the screw 21 to rotate in conjunction with the fixed shaft 20, and then the screw 21 can drive the linkage plate 23 to move when rotating, wherein the setting of the limit block 24 can limit the movement of the linkage plate 23, and then the linkage plate 23 can drive the locking block 25 to engage and separate with the locking groove 19 and the docking groove 26. When connected, it can cooperate with the connecting plate 18 to fix the movable frame 8 and the collector 15 on both ends of the heating box shell 1 to ensure stability, and when separated, it can release the restriction of the connecting plate 18, thereby facilitating the disassembly of the movable frame 8 and the collector 15, so as to facilitate the repair of the damaged electric heating wire 4 inside the heating box shell 1, and at the same time facilitate effective cleaning of the inside of the heating box shell 1, the movable frame 8 and the collector 15, and the first filter 9 and the second filter 16 can be conveniently cleaned.

[0036] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sand mold heating device for a metal model, comprising a heating box housing (1), characterized in that: A support plate (2) is fixedly installed inside the heating box housing (1), a connecting plate (3) is fixedly installed at the top corner of the support plate (2), an electric heating wire (4) is fixedly connected between two connecting plates (3), a connecting wire (5) is connected to the bottom surface of the connecting plate (3), the bottom end of the connecting wire (5) is fixedly connected to a controller (6), the controller (6) is fixedly connected to the bottom surface of the heating box housing (1), and support legs (7) are symmetrically installed on both sides of the bottom of the controller (6); A movable frame (8) is movably mounted on the rear end of the heating box housing (1), and an air supply mechanism is mounted inside the movable frame (8); A current collecting seat (15) is movably mounted on the front end of the heating box housing (1), a second filter (16) is movably mounted inside the current collecting seat (15), and a connector (17) is mounted on the front end of the current collecting seat (15); The air supply mechanism and the current collecting seat (15) are connected to the heating box housing (1) via a positioning and disassembly mechanism.

2. The sand mold heating device for a metal model according to claim 1, characterized in that: The electric heating wires (4) are distributed at equal intervals on the connecting piece (3), and the connecting heads (17) are distributed at equal angles at the front end of the current collecting seat (15).

3. The sand mold heating device for a metal model according to claim 1, characterized in that: The air supply mechanism comprises a first filter (9) fixedly mounted on the inner side of a movable frame (8); the rear end of the movable frame (8) is fixedly connected to a limit frame (10); the inner ring of the limit frame (10) is rotatably connected to a rotating shaft (11); the inner ring of the rotating shaft (11) is fixedly connected to a fan blade (12); the center of the fan blade (12) is connected to a driving motor (13); connecting frames (14) are fixedly mounted on both sides of the driving motor (13); and the connecting frame (14) is fixedly connected to the limit frame (10).

4. The sand mold heating device for a metal model according to claim 3, characterized in that: The fan blades (12) are rotatably connected to the limiting frame (10) via a rotating shaft (11), and the fan blades (12) are distributed at equal angles between the rotating shaft (11) and the shaft end of the driving motor (13).

5. The sand mold heating device for a metal model according to claim 1, characterized in that: The positioning and disassembly mechanism comprises a connecting plate (18) fixedly mounted on both sides of the movable frame (8) and the current collecting seat (15), a snap-fitting groove (19) is provided inside the connecting plate (18), a fixed shaft (20) is fixedly mounted on both sides of the heating box shell (1), the inner ring of the fixed shaft (20) is connected to a screw (21), the end of the screw (21) away from the fixed shaft (20) is fixedly sleeved with a knob (22), the outer ring of the screw (21) is threadedly sleeved with a linkage plate (23), the middle parts of the two ends of the linkage plate (23) slide through the limit block (24), one end of the limit block (24) is fixedly connected to the heating box shell (1), the two ends of the linkage plate (23) are fixedly mounted with a snap-fitting block (25), and the two sides of the heating box shell (1) are symmetrically provided with docking grooves (26).

6. The sand mold heating device for a metal model according to claim 5, characterized in that: The screw (21) cooperates with the limiting block (24) and the linkage plate (23) to form a limiting screw transmission structure, and the linkage plate (23) drives the locking block (25) to form a movable locking structure with the docking groove (26) and the locking groove (19).

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