Pouring device for sand casting

Abstract

A pouring device for sand casting, comprising a base (110), a pouring rail vehicle (130), a driving assembly (150), a range detector (170), and a control box (190). The base (110) is provided with guide rails (111), the pouring rail vehicle (130) is arranged on the guide rails (111), and the pouring rail vehicle (130) can move along the guide rails (111); the driving assembly (150) is arranged on the pouring rail vehicle (130); the range detector (170) is arranged on the pouring rail vehicle (130); and the control box (190) is arranged on the base (110) and is communicationally connected to both the driving assembly (150) and the range detector (170).

Description

Sand casting pouring device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 2023111711237, filed with the China Patent Office on September 12, 2023, and entitled “Sand Casting Pouring Device.” Technical Field

[0003] The present disclosure relates to the technical field of sand casting, and in particular to a sand casting pouring device. Background Art

[0004] Traditionally, large castings often exceed the robot's load capacity, so low-pressure sand castings are often handled by cranes. However, cranes and cranes can cause the sandbags to shake during movement, making them unsafe. Furthermore, violent shaking can cause the sand core to shift. During actual casting, manual gate alignment is required, but visual alignment is difficult.

[0005] The inventors have found that existing large castings are prone to impact during the movement of large parts after core assembly, which affects the product size and then causes collisions, resulting in sand core displacement, damage or product quality problems caused by loose sand. At the same time, it is difficult to align and has poor control accuracy, and the gate needs to be repeated each time.

[0006] Summary of the Invention

[0007] The present disclosure provides a sand casting pouring device, which can be used for low-pressure pouring of large castings, and the transfer process is smooth, which can avoid the sand bag from being impacted, bumped, etc. during the transfer process, ensure the product size and quality, and is easy to align with high control accuracy. There is no need for manual repeated alignment of the gate, thereby ensuring pouring safety.

[0008] The embodiments of the present disclosure may be implemented as follows:

[0009] The present disclosure provides a sand casting pouring device, comprising:

[0010] A base, wherein a guide rail is provided on the base, and a pouring station is provided at one end of the guide rail;

[0011] A pouring rail car, the pouring rail car is arranged on the guide rail and is configured to carry sand bags, and the pouring rail car is capable of moving along the guide rail to transport the sand bags to the pouring station;

[0012] a drive assembly, the drive assembly being disposed on the pouring rail vehicle and configured to drive the pouring rail vehicle to move along the guide rail;

[0013] a distance detector, the distance detector being provided on the pouring rail vehicle and configured to detect a moving distance of the pouring rail vehicle;

[0014] A control box is arranged on the base and is communicatively connected with the drive assembly and the distance detector, and is configured to control the drive assembly to drive the casting rail car to move according to the moving distance.

[0015] In an optional embodiment, the casting rail vehicle includes a frame, rollers, support adjustment members and a load-bearing table, the rollers are arranged on both sides of the frame and rollingly engage on the guide rails, the support adjustment members are arranged around the frame, the load-bearing table is movably arranged on the support adjustment members and is configured to carry the sandbags, the support adjustment members are communicatively connected to the control box, the support adjustment members can be independently controlled, and adjust the horizontality of the load-bearing table.

[0016] In an optional embodiment, each of the support adjustment members includes a servo support cylinder and a support rod, the servo support cylinder is connected to the frame, the support rod is transmission-connected to the servo support cylinder, and the top end of the support rod is movably connected to the load-bearing platform, the servo support cylinder is communicatively connected to the control box, and is configured to drive the load-bearing platform to rise or fall through the support rod.

[0017] In an optional embodiment, a pressure sensor is provided between the servo support cylinder and the support rod, and the pressure sensor is communicatively connected to the servo support cylinder.

[0018] In an optional embodiment, a spherical pin is provided at the top end of the support rod, a spherical groove is provided at the bottom side of the bearing table, and the spherical pin is movably assembled in the spherical groove.

[0019] In an optional embodiment, the pouring station is provided with a pouring furnace, a docking opening is provided in the middle of the supporting table, and the pouring furnace is configured to correspond to the pouring port of the sand bag through the docking opening.

[0020] In an optional embodiment, distance sensors are provided around the docking opening, and the distance sensors are communicatively connected to the support adjustment member and configured to detect the distance between the periphery of the supporting platform and the casting furnace.

[0021] In an optional embodiment, the distance detector includes an encoder connected to one of the rollers and configured to detect the rolling distance of the roller.

[0022] In an optional embodiment, a positioning structure is further provided on the supporting table, and the positioning structure is configured to fix the sand bag.

[0023] In an optional embodiment, the drive assembly includes a servo motor and a gear reducer, the casting rail car has a drive shaft, the servo motor is arranged on one side of the casting rail car, the gear reducer is transmission-connected to the servo motor, the drive shaft is transmission-connected to the gear reducer, and the servo motor is communicatively connected to the control box.

[0024] Compared with the prior art, the advantages of the embodiments of the present disclosure include, for example:

[0025] The sand casting pouring device provided by the embodiment of the present disclosure is provided with a guide rail on the base, and a pouring rail car is used to roll and assemble on the guide rail, and is configured to carry sand bags. The pouring rail car can be driven to move along the guide rail, and then the sand bags are transferred to the pouring station by the pouring rail car. The pouring rail car is also provided with a distance detector, which can accurately detect the moving distance of the pouring rail car, and the drive component and the distance communicator are both connected to the control box for communication. The control box can control the drive component to drive the pouring rail car to move by the moving distance. Compared with the prior art, the present disclosure realizes the transfer of sand bags by providing a pouring rail car and a guide rail, which can be applied to the low-pressure pouring of large castings, and the transfer process is smooth, which can avoid the sand bags from being impacted, bumped, etc. during the transfer process, thereby ensuring the size and quality of the product. At the same time, by providing the distance detector, the sand bag can move accurately, be easy to align, and have high control accuracy. There is no need for manual repeated alignment of the gate, thereby ensuring the safety of pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0027] FIG1 is a schematic diagram of the overall structure of a sand casting pouring device provided in an embodiment of the present disclosure;

[0028] FIG2 is a schematic diagram of a partial structure of a sand casting pouring device provided in an embodiment of the present disclosure;

[0029] FIG3 is a schematic structural diagram of the pouring rail vehicle in FIG1 from a first viewing angle;

[0030] FIG4 is a schematic structural diagram of the casting rail vehicle in FIG1 from a second viewing angle.

[0031] Icons: 100-sand casting pouring device; 110-base; 111-guide rail; 113-cable trough; 130-pouring rail car; 131-frame; 133-roller; 134-distance sensor; 135-support adjustment member; 136-spherical head; 137-bearing table; 1371-docking opening; 1373-positioning structure; 138-servo support cylinder; 139-support rod; 150-drive assembly; 151-servo motor; 153-gear reducer; 170-distance detector; 171-encoder; 180-pouring furnace; 190-control box. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort shall fall within the scope of protection of the present disclosure.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of the present disclosure, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present disclosure.

[0036] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0037] It should be noted that, in the absence of conflict, the features in the embodiments of the present disclosure may be combined with each other.

[0038] Referring to Figures 1 to 4, this embodiment provides a sand casting pouring device 100 that can be used for low-pressure pouring of large castings. The transfer process is smooth, and the sand bag can be prevented from being impacted or bumped during transfer, thereby ensuring product size and quality. At the same time, the sand bag can be moved accurately, easily aligned, and controlled with high precision, eliminating the need for manual repeated alignment of the gate, thereby ensuring pouring safety. It can also ensure reliable sealing during pouring, without sparks or overpressure, and without cracking or deformation of the sand core. The device can be moved after pouring without waiting for crusting, thereby improving furnace utilization. The transfer process after pouring is also smooth and reliable, without causing sloshing of the molten aluminum and avoiding casting defects.

[0039] This embodiment provides a sand casting pouring device 100, including a base 110, a pouring rail car 130, a drive assembly 150, a distance detector 170 and a control box 190. The base 110 is provided with a guide rail 111, and a pouring station is provided at one end of the guide rail 111. The pouring rail car 130 is disposed on the guide rail 111 and is configured to carry sand bags, and the pouring rail car 130 can move along the guide rail 111 to transfer the sand bags to the pouring station; the drive assembly 150 is disposed on the pouring rail car 130 and is configured to drive the pouring rail car 130 to move along the guide rail 111; the distance detector 170 is disposed on the pouring rail car 130 and is configured to detect the movement distance of the pouring rail car 130; the control box 190 is disposed on the base 110 and is in communication with the drive assembly 150 and the distance detector 170 at the same time. It is configured to control the drive assembly 150 to drive the pouring rail car 130 to move according to the movement distance.

[0040] It should be noted that the sand casting pouring apparatus 100 utilizes a pouring railcar 130 and guide rails 111 to facilitate the transport of sandbags, making it suitable for low-pressure pouring of large castings. The transport process is smooth, preventing impacts and collisions during transport, thereby ensuring product size and quality. Furthermore, the provision of a distance detector 170 allows for precise sandbag movement, facilitating alignment and achieving high control accuracy, eliminating the need for manual, repeated gate alignment and ensuring safe pouring.

[0041] In this embodiment, a cable trough 113 is further provided on one side edge of the base 110. Cables are arranged in the cable trough 113 to realize the placement of the cables of the control box 190 and the casting rail car 130. The guide rail 111 can be fixed on the load-bearing surface of the base 110 by two I-beams. The maximum load capacity is preferably 50 tons, so that the casting rail car 130 can carry large items.

[0042] Furthermore, the casting railcar 130 includes a frame 131, rollers 133, support and adjustment members 135, and a load-bearing platform 137. The rollers 133 are disposed on both sides of the frame 131 and rollably engage with the guide rails 111. The support and adjustment members 135 are disposed around the periphery of the frame 131. The load-bearing platform 137 is movably mounted on the support and adjustment members 135 and configured to carry sandbags. The support and adjustment members 135 are communicatively connected to the control box 190 and configured to support the load-bearing platform 137. The support and adjustment members 135 can be independently controlled to adjust the levelness of the load-bearing platform 137. Specifically, the load-bearing platform 137 is configured to carry sandbags, thereby providing good support for the sandbags and preventing them from tilting and sliding. The rollers 133 can precisely roll and engage with the guide rails 111, ensuring directional rolling of the rollers 133. In addition, the support adjustment member 135 can adjust the horizontality of the supporting platform 137, thereby ensuring that the supporting platform 137 remains parallel to the furnace cover of the pouring furnace 180 below, which is conducive to smooth pouring.

[0043] It should be noted that in this embodiment, there can be four support adjustment members 135, and the four support adjustment members 135 are respectively arranged at the four top corners of the frame 131, so as to adjust the heights of the four corners of the supporting platform 137 respectively, and then adjust the horizontality of the supporting platform 137.

[0044] Each support adjustment member 135 includes a servo support cylinder 138 and a support rod 139. The servo support cylinder 138 is connected to the frame 131, and the support rod 139 is in transmission connection with the servo support cylinder 138. The top end of the support rod 139 is movably connected to the support platform 137. The servo support cylinder 138 is in communication with the control box 190 and is configured to drive the support platform 137 to rise or fall via the support rod 139. Specifically, the servo support cylinder 138 can be an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and can be raised or lowered to adjust the levelness of the support platform 137.

[0045] In this embodiment, a pressure sensor is provided between the servo support cylinder 138 and the support rod 139, and is in communication with the servo support cylinder 138. Specifically, the pressure sensor monitors the weight of the tabletop and calculates the gate pressure based on the pressure. By controlling the servo support cylinder 138, the gate pressure can be adjusted to meet the needs of different products.

[0046] In this embodiment, a spherical pin 136 is provided at the top of the support rod 139, and a spherical groove is provided on the bottom side of the support platform 137. The spherical pin 136 is movably assembled in the spherical groove. Specifically, the provision of the spherical pin 136 allows the support platform 137 to be adjusted within a certain level, preventing it from getting stuck.

[0047] In this embodiment, the pouring station is equipped with a pouring furnace 180. A docking opening 1371 is provided in the center of the support table 137. The pouring furnace 180 is configured to align with the pouring spout of the sand bag through the docking opening 1371. Specifically, the docking opening 1371 can be a rectangular opening. The pouring furnace 180 is configured to inject molten aluminum into the mold cavity through low-pressure pouring. Preferably, the pouring station is a sunken structure, so that the pouring furnace 180 is located at the bottom of the sand bag. The pouring furnace 180 is equipped with a liquid riser transition pipe. This liquid riser transition pipe passes through the docking opening 1371 and docks with the sprue of the sand core to achieve pouring.

[0048] In this embodiment, distance sensors 134 are disposed around the docking opening 1371. These distance sensors 134 are in communication with the support adjustment member 135 and are configured to detect the distance between the perimeter of the support platform 137 and the pouring furnace 180. Specifically, the docking opening 1371 is rectangular, and four distance sensors 134 may be provided, one at each of the four corners of the docking opening 1371, thereby respectively detecting the distance between the support platform 137 and the pouring furnace 180. After detecting the distance information, the distance sensors 134 can control the servo support cylinder 138 to partially raise or lower the support platform 137, thereby ensuring that the distances detected by the four sensors are the same, thereby ensuring that the support platform 137 remains parallel to the furnace cover of the pouring furnace 180, further ensuring the accuracy of the pouring gate alignment.

[0049] Furthermore, the distance detector 170 includes an encoder 171, which is connected to one of the rollers 133 and is configured to detect the rolling distance of the roller 133. Specifically, the encoder 171 can detect the rolling distance of the roller 133 and, in turn, the overall travel distance of the casting rail vehicle 130. The drive assembly 150 can move or stop the casting rail vehicle 130 based on the travel distance with an accuracy of up to 0.5 mm, thereby ensuring the precise positioning of the casting rail vehicle 130.

[0050] In this embodiment, the support table 137 is further provided with a positioning structure 1373, which is configured to secure the sandbag. Specifically, the positioning structure 1373 may be a positioning rib that forms a retaining and positioning relationship with the sandbag, thereby preventing the sandbag from shifting on the support table 137 and ensuring stable operation. The positioning structure 1373 is a raised structure, preferably protruding above the support table 137 and having a draft angle of 3°-10°, to ensure precise positioning of the sandbag and the carriage.

[0051] The drive assembly 150 includes a servo motor 151 and a gear reducer 153. The casting railcar 130 has a drive shaft. The servo motor 151 is disposed on one side of the casting railcar 130. The gear reducer 153 is in driving connection with the servo motor 151. The drive shaft is in driving connection with the gear reducer 153. The servo motor 151 is in communication with the control box 190. Specifically, the servo motor 151 is in communication with the control box 190, thereby achieving drive control through the control box 190. The distance detector 170 and the support adjustment member 135 are also in communication with the control box 190, enabling integrated control by the control box 190.

[0052] It should be noted that, in this embodiment, driven by the servo motor 151, the moving speed of the rail-driven vehicle can be 0.5m-1.25m / min, and it runs smoothly at a low speed, avoiding impact on the sand core and unsolidified aluminum liquid, preventing the sand core from shifting, avoiding sand falling, and ensuring product precision and internal quality.

[0053] In summary, the sand casting pouring device 100 provided in this embodiment is configured by providing a guide rail 111 on the base 110, and utilizing a pouring rail car 130 that is rollingly assembled on the guide rail 111. The pouring rail car 130 is used to carry and transport the sand. The servo motor 151 is connected to the drive shaft of the pouring rail car 130, thereby driving the pouring rail car 130 to move along the guide rail 111. The roller 133 in the middle of the pouring rail car 130 is equipped with an encoder 171, thereby enabling precise control of the displacement distance of the pouring rail car 130. In actual operation, the pouring rail car 130 can be driven to move along the guide rail 111, and then the sand bag can be transported to the pouring station by the pouring rail car 130. The drive assembly 150 and the distance communicator are both communicatively connected to the control box 190. The control box 190 can control the drive assembly 150 to drive the pouring rail car 130 to move by the moving distance. Furthermore, the support adjustment member 135 enables adjustment of the horizontality of the support table 137, thereby achieving automatic leveling of the support table 137. Compared to the prior art, this embodiment utilizes the provision of a pouring railcar 130 and guide rails 111 to facilitate the transport of sandbags, making it suitable for low-pressure pouring of large castings. The transport process is smooth, preventing impacts and collisions during transport, and ensuring product size and quality. Furthermore, the provision of a distance detector 170 allows for precise sandbag movement, ease of alignment, and high control accuracy, eliminating the need for manual, repeated gate alignment and ensuring safe pouring.

[0054] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims. Industrial Applicability

[0055] In summary, the present disclosure provides a sand casting pouring device that can be used for low-pressure pouring of large castings. It also provides a smooth transfer process, preventing impacts and collisions of sand bags during transfer, thereby ensuring product size and quality. Furthermore, the provision of a distance detector allows for precise sand bag movement, facilitating alignment and achieving high control accuracy, eliminating the need for manual, repeated gate alignment and ensuring safe pouring.

Claims

1. A sand casting pouring device, characterized in that: include: A base, wherein a guide rail is disposed on the base, and a pouring station is disposed at one end of the guide rail; A casting rail car, the casting rail car is arranged on the guide rail and is configured to carry sand bags, and the casting rail car can move along the guide rail to transfer the sand bags to the casting station; A driving assembly, the driving assembly is disposed on the pouring rail vehicle and is configured to drive the pouring rail vehicle to move along the guide rail; A distance detector, the distance detector is disposed on the pouring rail vehicle and is configured to detect a moving distance of the pouring rail vehicle; A control box is disposed on the base and is communicatively connected with the drive assembly and the distance detector, and is configured to control the drive assembly to drive the casting rail vehicle to move according to the moving distance.

2. The sand casting pouring device according to claim 1, characterized in that: The casting rail vehicle includes a frame, rollers, support adjustment parts and a load-bearing table. The rollers are arranged on both sides of the frame and rollingly engage on the guide rails. The support adjustment parts are arranged around the frame. The load-bearing table is movably arranged on the support adjustment parts and is configured to carry the sandbags. The support adjustment parts are communicatively connected to the control box, and the support adjustment parts can be independently controlled to adjust the horizontality of the load-bearing table.

3. The sand casting pouring device according to claim 2, characterized in that: Each of the support adjustment members includes a servo support cylinder and a support rod, wherein the servo support cylinder is connected to the frame, the support rod is transmission-connected to the servo support cylinder, and the top end of the support rod is movably connected to the load-bearing table. The servo support cylinder is communicatively connected to the control box and is configured to drive the load-bearing table to rise or fall through the support rod.

4. The sand casting pouring device according to claim 3, characterized in that: A pressure sensor is provided between the servo support cylinder and the support rod, and the pressure sensor is in communication connection with the servo support cylinder.

5. The sand casting pouring device according to claim 3, characterized in that: The top end of the support rod is provided with a spherical top, the bottom side of the bearing table is provided with a spherical groove, and the spherical top is movably assembled in the spherical groove.

6. The sand casting pouring device according to any one of claims 2 to 5, characterized in that: The pouring station is provided with a pouring furnace, a docking opening is provided in the middle of the bearing table, and the pouring furnace is configured to correspond to the pouring port of the sand bag through the docking opening.

7. The sand casting pouring device according to claim 6, characterized in that: Distance sensors are arranged around the docking opening, and the distance sensors are in communication connection with the support adjustment member and are configured to detect the distance between the surrounding of the bearing table and the casting furnace.

8. The sand casting pouring device according to any one of claims 2 to 5, characterized in that: The distance detector includes an encoder connected to one of the rollers and configured to detect a rolling distance of the roller.

9. The sand casting pouring device according to any one of claims 2 to 5, characterized in that: The bearing table is also provided with a positioning structure, and the positioning structure is configured to fix the sand bag.

10. The sand casting pouring device according to any one of claims 1 to 9, characterized in that: The driving assembly includes a servo motor and a gear reducer. The casting rail car has a driving shaft. The servo motor is arranged on one side of the casting rail car. The gear reducer is drivingly connected to the servo motor. The driving shaft is drivingly connected to the gear reducer. The servo motor is communicatively connected to the control box.

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