Heating tube circuit control mechanism for shell core machine

Abstract

The utility model relates to the technical field of shell core machines, in particular to a heating tube circuit control mechanism for a shell core machine, which comprises a base, two mounting brackets are symmetrically and fixedly arranged on the top surface of the base, mounting modules are symmetrically arranged on the two mounting brackets, and the mounting modules on the two sides are respectively used for mounting a static mold and a movable mold. A connecting plate is arranged on the inner side of the mounting support, and the mounting module comprises a rotating assembly used for driving the mold to rotate, a pushing assembly used for horizontally driving the mold to move and a control assembly used for controlling opening and closing of the heating pipe. The heating pipe is powered on or powered off in a contact switch mode, so that the phenomenon that a circuit is twisted off due to rotation of the die can be effectively avoided, circuit maintenance is reduced, resource waste is reduced, production efficiency is ensured, and design is more reasonable.

Description

Technical Field

[0001] This utility model relates to the field of shell core making technology, and in particular to a heating tube circuit control mechanism for shell core making. Background Technology

[0002] The core-making machine is a device that uses a hot core box process to produce coated sand cores. Its operation involves simultaneous sand filling and compaction. The coated sand solidifies in the hot core box, reducing labor intensity, offering flexible and easy operation, and being easy to master. It uses electric heating, allowing for automatic temperature control, and the work area is easy to keep clean, creating conditions for the mechanization and automation of the core-making process. A single cycle takes only tens of seconds to produce sand cores for casting, making it widely used in the foundry industry.

[0003] The prior art, disclosed in publication number CN213002511U, discloses a shell core machine, including a frame, a sand-shooting assembly, a sand hopper lifting assembly, a mold assembly, a mold pushing assembly, and an electric heating device placed on the mold assembly. It also includes a track assembly, with the mold assembly mounted on it. The mold pushing assembly is connected to the mold assembly to push the mold assembly to slide on the track assembly. A rotating mechanism is also included, connected to the track assembly to drive the track assembly to rotate around its own track axis. This shell core machine utilizes the rotating mechanism to unload material when removing it from the shell core, making the entire process more intelligent and significantly improving the efficiency of the entire shell core production process.

[0004] However, the aforementioned existing technologies still have certain shortcomings in their use: In actual production, after the core mold is closed, the coated sand is injected into the inner cavity of the closed mold through the sand injection mechanism. After the coated sand solidifies in the electrically heated core mold, the mold is rotated 180° to pour out the uncured loose sand from the inner cavity of the core. In this process, since the heating pipe circuit of the current mold heating mechanism is generally installed directly on the core mold, this method can be applied to most production operation scenarios. However, when the production operation requires the core mold to be rotated 180° for heating, the heating pipe circuit is often broken, and the heating pipe circuit needs to be replaced frequently. On the one hand, this reduces production efficiency, and on the other hand, it causes a certain degree of resource waste. Therefore, further improvement is needed. Utility Model Content

[0005] The purpose of this invention is to provide a heating tube circuit control mechanism for a shell core machine that can prevent the heating tube circuit from being twisted off.

[0006] The present invention adopts the following technical solution: a heating tube circuit control mechanism for a shell core machine, including a base, two mounting brackets are symmetrically fixed on the top surface of the base, and mounting modules are symmetrically arranged on the two mounting brackets. The mounting modules on both sides are used to install the static mold and the moving mold, respectively. A connecting plate is provided on the inner side of the mounting bracket. The mounting module includes a rotating component for driving the mold to rotate, a pushing component for driving the mold to move horizontally, and a control component for controlling the opening and closing of the heating tube.

[0007] Preferably, the rotating assembly includes a mounting frame disposed on the outside of the connecting plate. A driven gear and a driving gear meshing with the driven gear are rotatably disposed inside the mounting frame. A servo motor is fixedly disposed on the outside of the mounting frame. The output shaft of the servo motor passes through and rotates on the side of the mounting frame and is axially fixed to the driving gear. A rotating shaft is axially fixed on the side of the driven gear facing the connecting plate. The rotating shaft passes through and rotates in the middle of the connecting plate. A mold fixing plate is fixedly disposed at the front end of the rotating shaft.

[0008] Preferably, the moving mold and the stationary mold are symmetrically fixed with connecting parts on the side opposite to the mold groove, and the connecting parts fix the mold to the mold fixing plate through the fixing components.

[0009] Preferably, the pushing component includes a mounting bracket disposed on the outside of the mounting bracket, a hydraulic cylinder is fixedly disposed on the outside of the mounting bracket, the moving end of the hydraulic cylinder passes through and slides on the mounting bracket and a connecting piece is fixedly disposed at the top end, the connecting piece is fixedly connected to the side of the connecting plate, and a stabilizing rod is fixedly disposed at each of the four corners of the side of the connecting plate facing the mounting bracket, the stabilizing rod passes through and slides on the mounting bracket, and a bushing that slides with the stabilizing rod is fixedly disposed on the outside of the mounting bracket at the position of the stabilizing rod.

[0010] Preferably, the control component includes a fixed electrode component and a movable electrode component. When the fixed electrode component and the movable electrode component are in contact, power can be supplied, and when the fixed electrode component and the movable electrode component are separated, power can be de-energized.

[0011] Preferably, the fixed electrode assembly includes a guide rod fixing plate disposed on the connecting plate. A cylinder is disposed on the outer side of the guide rod fixing plate. The moving end of the cylinder passes through and slides on the guide rod fixing plate. A plate is disposed at the top of the moving end of the cylinder. A receiving groove is opened on the inner side of the plate. An electrode plate with several heating contacts and temperature signal feedback contacts is fixedly disposed in the receiving groove. Several sliding rods are fixedly disposed on the side of the plate away from the receiving groove. The sliding rods pass through and slide on the guide rod fixing plate. A connector is fixedly disposed on the side of the plate away from the receiving groove, which is connected to the electrode plate. The connector is connected to an external power source.

[0012] Preferably, a through connecting pipe is fixedly installed on the guide rod fixing plate. The position of the connecting pipe is adapted to the position of the connector. By setting the connecting pipe, the conductor circuit can be cleared, which facilitates the protection of the circuit and reduces the damage to the circuit.

[0013] Preferably, the movable electrode assembly includes a positioning plate fixed to the mold fixing plate. The positioning plate has a stepped groove on the side facing the connecting plate. An electrode plate two is fixedly installed in the small space of the stepped groove. The electrode plate two is also provided with a number of heating contacts and temperature signal feedback contacts that are adapted to the position and number on the electrode plate one. The size of the large space of the stepped groove is adapted to the size of the plate. A number of connectors two connected to the electrode plate two are fixedly installed on the side of the positioning plate away from the connecting plate. The connectors two are connected to the heating pipe wires inside the mold.

[0014] Preferably, the plates, positioning plates, and guide rod fixing plates are all made of insulating materials.

[0015] Preferably, when the moving mold and the stationary mold are closed, the fixed electrode assembly and the moving electrode assembly are directly opposite each other.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This application includes a control component for controlling the opening and closing of the heating element. The control component comprises a fixed electrode assembly and a movable electrode assembly. The fixed electrode assembly is mounted on a non-rotating connecting plate, while the movable electrode assembly is mounted on a rotatable mold fixing plate. When the mold is closed, the movable and fixed electrode assemblies face each other, allowing the electrode plate 1 in the fixed electrode assembly to contact the electrode plate 2 in the movable electrode assembly via a cylinder in the fixed electrode assembly. This energizes the heating element, thus satisfying the mold heating process. When the mold is heated and sand pouring is required, the electrode plate 1 and electrode plate 2 separate, cutting off the power without hindering the mold rotation. Compared with existing technologies, this solution effectively avoids the heating element circuit from breaking due to mold rotation, greatly reducing the frequency of heating element circuit maintenance and replacement, reducing the labor intensity of workers, significantly reducing resource waste, and ensuring production efficiency. The design is more reasonable and practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of some parts of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the rotating component of this utility model;

[0021] Figure 4 This is a schematic diagram of some parts of the rotating assembly of this utility model;

[0022] Figure 5This is a schematic diagram of the structure of the driving component of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the fixed electrode assembly of this utility model. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the structure of the fixed electrode assembly of this utility model. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the structure of the movable electrode assembly of this utility model. Figure 1 ;

[0026] Figure 9 This is a schematic diagram of the structure of the movable electrode assembly of this utility model. Figure 2 ;

[0027] In the diagram: 1. Base; 2. Mounting bracket; 3. Mounting module; 4. Static mold; 5. Moving mold; 6. Connecting plate; 7. Rotating assembly; 8. Pushing assembly; 9. Control assembly; 10. Mounting frame; 11. Driven gear; 12. Driving gear; 13. Servo motor; 14. Rotating shaft; 15. Mold fixing plate; 16. Connecting piece; 17. Mounting bracket; 18. Hydraulic cylinder; 19. Connecting piece; 20. Stabilizing rod; 21. Bushing; 22. Fixed electrode assembly; 23. Moving electrode assembly; 24. Guide rod fixing plate; 25. Cylinder; 26. Plate; 27. Receiving groove; 28. Electrode plate one; 29. ​​Heating contact; 30. Temperature signal feedback contact; 31. Slide rod; 32. Connector one; 33. Connecting pipe; 34. Positioning plate; 35. Step groove; 36. Electrode plate two; 37. Connector two. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only a part of the embodiments disclosed in this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Various non-limiting embodiments of this utility model are described in detail below. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0030] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0031] Please see Figure 1-9The present invention will be described in detail below with reference to the accompanying drawings and embodiments: A heating tube circuit control mechanism for a shell core machine includes a base 1. Two mounting brackets 2 are symmetrically fixed on the top surface of the base 1. Mounting modules 3 are symmetrically arranged on the two mounting brackets 2. The mounting modules 3 on both sides are used to mount a stationary mold 4 and a moving mold 5, respectively. A connecting plate 6 is provided on the inner side of the mounting bracket 2. The mounting module 3 includes a rotating component 7 for driving the mold to rotate, a pushing component 8 for driving the mold to move horizontally, and a control component 9 for controlling the opening and closing of the heating tube.

[0032] Please see Figure 1-4 The rotating assembly 7 includes a mounting frame 10, which is fixedly mounted on the outside of the connecting plate 6. A driven gear 11 and a driving gear 12 meshing with the driven gear 11 are rotatably mounted inside the mounting frame 10. A servo motor 13 is fixedly mounted on the outside of the mounting frame 10. The output shaft of the servo motor 13 passes through and rotates on the side of the mounting frame 10 and is axially fixed to the driving gear 12. A rotating shaft 14 is axially fixed on the side of the driven gear 11 facing the connecting plate 6. The rotating shaft 14 passes through and rotates in the middle of the connecting plate 6. A mold fixing plate 15 is fixedly mounted at the front end of the rotating shaft 14.

[0033] Furthermore, the rotating shaft 14 is connected to the connecting plate 6 via a bearing.

[0034] Please see Figure 2 Connectors 16 are symmetrically fixed on the side of the moving mold 5 and the stationary mold 4 away from the mold slot. The connectors 16 stabilize the mold on the mold fixing plate 15 through the fixing components. The fixing components are a conventional method and will not be described in detail here.

[0035] When the mold needs to be sanded, the servo motors 13 on both sides are started at the same time. The servo motors 13 on both sides drive the drive gear 12 to rotate. The drive gear 12 drives the driven gear 11. The driven gear 11 drives the rotating shaft 14 to rotate. The rotating shaft 14 drives the mold fixing plate 5 to rotate, and then drives the mold in the mold-closed state to rotate 180°, so that the sand inlet is facing down, thereby realizing the sanding process.

[0036] Please see Figure 2 , 5 The pushing component 8 includes a mounting frame 17, which is fixedly mounted on the outside of the mounting bracket 2. A hydraulic cylinder 18 is fixedly mounted on the outside of the mounting frame 17. The moving end of the hydraulic cylinder 18 passes through and slides on the mounting frame 17, and a connector 19 is fixedly mounted on its top end. The side of the connector 19 away from the hydraulic cylinder 18 is fixedly connected to the side of the connecting plate 6. A stabilizing rod 20 is fixedly mounted at each of the four corners of the side of the connecting plate 6 facing the mounting bracket 2. The stabilizing rod 20 passes through and slides on the mounting bracket 2. A bushing 21 is fixedly mounted on the outside of the mounting bracket 2 at the position of the stabilizing rod 20. The bushing 21 slides with the stabilizing rod 20.

[0037] When mold closing is required, the hydraulic cylinders 18 on both sides are activated simultaneously. The hydraulic cylinders 18 on both sides push the mounting frames 10 on both sides to gradually move towards the middle, so that the moving mold 5 and the stationary mold 4 on the inner side gradually approach each other and finally make full contact, thus realizing mold closing.

[0038] Please see Figure 2 The control component 9 includes a fixed electrode component 22 and a movable electrode component 23. When the fixed electrode component 22 and the movable electrode component 23 are in contact, they can be energized, and when the fixed electrode component 22 and the movable electrode component 23 are separated, they can be de-energized.

[0039] Please see Figure 6-7 The fixed electrode assembly 22 includes a guide rod fixing plate 24, which is fixedly mounted on the upper front end of the connecting plate 6. A cylinder 25 is fixedly mounted on the outer side of the guide rod fixing plate 24, with the moving end of the cylinder 25 passing through and sliding on the guide rod fixing plate 24. A plate 26 is fixedly mounted on the top of the moving end of the cylinder 25, with a receiving groove 27 on the inner side of the plate 26. An electrode plate 28 is fixedly mounted in the receiving groove 27, with several heating contacts 29 and temperature signal feedback contacts 30 on the side of the electrode plate 28. Several sliding rods 31 are fixedly mounted on the side of the plate 26 away from the receiving groove 27, passing through and sliding on the guide rod fixing plate 24. A connector 32 connected to the electrode plate 28 is fixedly mounted on the side of the plate 26 away from the receiving groove 27, and the connector 32 is connected to an external power source. The power source is a conventional setting and will not be described in detail here.

[0040] Please see Figure 7 A through connecting pipe 33 is fixedly installed on the guide rod fixing plate 24. The position of the connecting pipe 33 is adapted to the position of the connector 32. The connection pipe 33 can be used to straighten the wire circuit, which is convenient for protecting the circuit and reducing the damage to the circuit.

[0041] Please see Figure 8-9 The movable electrode assembly 23 includes a positioning plate 34, which is fixed to the upper front side of the mold fixing plate 15 by bolts. A stepped groove 35 is provided on the side of the positioning plate 34 facing the connecting plate 6. An electrode plate 26 is fixedly installed in the small space of the stepped groove 35. The electrode plate 26 is also provided with a number of heating contacts 29 and temperature signal feedback contacts 30 that are adapted to the position and number on the electrode plate 1 28. The size of the large space of the stepped groove 35 is adapted to the size of the plate 26. A number of connectors 27 connected to the electrode plate 26 are fixedly installed on the side of the positioning plate 34 away from the connecting plate 6. The connectors 27 are connected to the heating tube wires inside the mold.

[0042] Plate 26, positioning plate 34 and guide rod fixing plate 24 are all made of insulating material.

[0043] When the moving mold 5 and the stationary mold 4 are closed, the fixed electrode assembly 22 is directly opposite the moving electrode assembly 23.

[0044] When the mold is finished with sand injection and needs to be heated, the cylinder 25 is first activated to extend. The cylinder 25 pushes the plate 26 gradually closer to the positioning plate 34. During the movement, the plate 26 gradually enters the stepped groove 35, so that the heating contacts 29 and temperature signal feedback contacts 30 on the electrode plate 1 28 and electrode plate 2 36 are in full contact, thereby forming a circuit. Then, the power is turned on to energize the heating tube, and the heating tube heats the mold.

[0045] When the mold is heated and needs to be rotated 180° for sand removal, the cylinder 25 is first activated to retract, causing the cylinder 25 to pull the plate 26 gradually away from the positioning plate 34. This causes the heating contacts 29 and temperature signal feedback contacts 30 on the electrode plate 1 28 and electrode plate 2 36 to separate, creating an open circuit and stopping the heating tube. After the plate 26 is reset, the servo motors 13 on both sides are activated simultaneously. The servo motors 13 on both sides can then drive the mold 5 to rotate 180° to achieve the sand removal process.

[0046] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0047] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A heating tube circuit control mechanism for a shell core machine, characterized by: The device includes a base, on which two mounting brackets are symmetrically fixedly mounted on the top surface. Mounting modules are symmetrically mounted on the two mounting brackets. The mounting modules on both sides are used to mount the static mold and the moving mold, respectively. A connecting plate is provided on the inner side of the mounting bracket. The mounting module includes a rotating component for driving the mold to rotate, a pushing component for driving the mold to move horizontally, and a control component for controlling the opening and closing of the heating tube.

2. The heating tube circuit control mechanism for a shell core machine according to claim 1, characterized by: The rotating assembly includes a mounting frame disposed on the outside of the connecting plate. A driven gear and a driving gear meshing with the driven gear are rotatably disposed inside the mounting frame. A servo motor is fixedly disposed on the outside of the mounting frame. The output shaft of the servo motor passes through and rotates on the side of the mounting frame and is axially fixed to the driving gear. A rotating shaft is axially fixed on the side of the driven gear facing the connecting plate. The rotating shaft passes through and rotates in the middle of the connecting plate. A mold fixing plate is fixedly disposed at the front end of the rotating shaft.

3. The heating tube circuit control mechanism for a shell core machine according to claim 1, characterized by: The moving mold and the stationary mold are symmetrically fixed with connecting parts on the side away from the mold slot. The connecting parts fix the mold to the mold fixing plate through the fixing components.

4. The heating tube circuit control mechanism for a shell core machine according to claim 1, characterized by: The pushing component includes a mounting bracket disposed on the outside of the mounting bracket. A hydraulic cylinder is fixedly disposed on the outside of the mounting bracket. The moving end of the hydraulic cylinder passes through and slides on the mounting bracket, and a connecting piece is fixedly disposed on its top end. The connecting piece is fixedly connected to the side of the connecting plate. Stabilizing rods are fixedly disposed at the four corners of the side of the connecting plate facing the mounting bracket. The stabilizing rods pass through and slide on the mounting bracket. A bushing that slides with the stabilizing rod is fixedly disposed on the outside of the mounting bracket at the position of the stabilizing rod.

5. The heating tube circuit control mechanism for a shell core machine according to claim 1, characterized by: The control component includes a fixed electrode assembly and a movable electrode assembly. When the fixed electrode assembly and the movable electrode assembly are in contact, power is supplied; when the fixed electrode assembly and the movable electrode assembly are separated, power is de-energized.

6. The heating tube circuit control mechanism for a shell core machine according to claim 5, wherein: The fixed electrode assembly includes a guide rod fixing plate mounted on a connecting plate. A cylinder is mounted on the outer side of the guide rod fixing plate. The moving end of the cylinder passes through and slides on the guide rod fixing plate. A plate is mounted at the top of the moving end of the cylinder. A receiving groove is opened on the inner side of the plate. An electrode plate with several heating contacts and temperature signal feedback contacts is fixedly mounted in the receiving groove. Several sliding rods are fixedly mounted on the side of the plate away from the receiving groove. The sliding rods pass through and slide on the guide rod fixing plate. A connector is fixedly mounted on the side of the plate away from the receiving groove, which is connected to the electrode plate. The connector is connected to an external power source.

7. The heating tube circuit control mechanism for a shell core machine according to claim 6, characterized by: A through connecting pipe is fixedly installed on the guide rod fixing plate, and the position of the connecting pipe is adapted to the position of the connector.

8. The heating tube circuit control mechanism for a shell core machine according to claim 6, characterized by: The movable electrode assembly includes a positioning plate fixed to the mold fixing plate. A stepped groove is formed on the side of the positioning plate facing the connecting plate. An electrode plate two is fixedly installed in the small space of the stepped groove. The electrode plate two is also provided with a number of heating contacts and temperature signal feedback contacts that are adapted to the position and number on the electrode plate one. The size of the large space of the stepped groove is adapted to the size of the plate. A number of connectors two connected to the electrode plate two are fixedly installed on the side of the positioning plate away from the connecting plate. The connectors two are connected to the heating pipe wires inside the mold.

9. The heating tube circuit control mechanism for a shell core machine according to claim 8, characterized by: The plates, positioning plates, and guide rod fixing plates are all made of insulating materials.

10. The heating tube circuit control mechanism for a shell core machine according to claim 6, characterized by: When the moving mold and the stationary mold are closed, the fixed electrode assembly and the moving electrode assembly are facing each other.

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