Sand box transmission device for limiting vibration

Abstract

The utility model discloses a sand box transmission device of limit vibration, including support frame, set up conveying mechanism on support frame, set up and located conveying mechanism one side's limiting mechanism on support frame, set up and located conveying mechanism below's lifting assembly on support frame, set up vibration subassembly on lifting assembly and set up and located conveying mechanism other side's sand outlet subassembly on support frame, the limiting mechanism includes two limiting assemblies, and each limiting assembly all includes the linear motor of fixedly arranged on support frame, and the output of linear motor is equipped with the limiting rod that stretches out vertically upwards. The utility model sets up transmission mechanism and carries vibration subassembly's lifting assembly, and the sand in sand box is handled in the transportation process, and the sand in sand box is handled in the transportation process, and also, set up limiting assembly and prevent sand box vibration deviation, in addition, set up sand outlet subassembly, and the sand of transfer fallen sand is collected, and production efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, and in particular to a sand box transmission device with limiting vibration. Background Technology

[0002] Before sand casting, molding sand needs to be filled into the sand box. Manual filling is inefficient and time-consuming. While mechanically pouring the molding sand into the sand box is difficult to do evenly, requiring workers to spread the sand gradually from one area to the other and then tamp it down to achieve uniform filling, this method is still inefficient and requires long hours of worker assistance. Even under vibration conditions, the vibration causes the sand box to move and spills molding sand everywhere, making the production site difficult to clean. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a sand box conveying device that can vibrate and level the molding sand, limit the vibration position, and collect and clean up the fallen molding sand.

[0004] To solve the above-mentioned technical problems, the present invention provides a limiting vibration sand box conveying device, including a support frame, a conveying mechanism mounted on the support frame for conveying sand boxes, a limiting mechanism mounted on the support frame and located on one side of the conveying mechanism, a lifting assembly mounted on the support frame and located below the conveying mechanism, a vibration assembly mounted on the lifting assembly, and a sand discharge assembly mounted on the support frame and located on the other side of the conveying mechanism. The limiting mechanism includes two limiting components symmetrically mounted on the support frame along the conveying direction. Each limiting component includes a linear motor fixed on the support frame. The output end of the linear motor is provided with a vertically upward extending limiting rod. The upper end face of the limiting rod is flush with the upper end face of the corresponding position in the conveying mechanism.

[0005] The above structure includes a conveying mechanism to move the sand box, a lifting component to lift the sand box, and a vibration component to vibrate the sand box to level the molding sand. At the same time, a limiting component is set to limit the position of the sand box to prevent it from shifting due to vibration and to prevent the sand box from falling due to movement. In addition, a sand discharge component is set to collect the molding sand that falls off due to vibration, which not only facilitates cleaning of the production site but also reduces production costs.

[0006] To effectively ensure the power of the conveying movement, preferably, the conveying mechanism includes two support blocks arranged parallel to each other and multiple drive shaft groups arranged between the two support blocks. Each drive shaft group includes several drive shafts arranged parallel to each other along the length direction of the support block between the two support blocks, and a power motor is provided on one side of the support block near the sand box insertion end. The output end of the power motor is connected to a drive shaft at the corresponding position, and adjacent drive shafts in each drive shaft group are connected by chain drive.

[0007] To simplify the structure and facilitate installation, preferably, the lifting assembly includes a bracket connected to the support frame and a cylinder mounted on the bracket and connected to an air pump. The output end of the cylinder is provided with a connecting rod that extends upward through the bracket, and the end of the connecting rod is provided with a support plate that bears the vibration assembly.

[0008] To facilitate installation and sand removal, preferably, the vibration assembly includes a frame-shaped base plate connected to the support plate. Support blocks are provided at positions corresponding to the two drive shafts on the upper end of the base plate. A connecting plate is connected to the lower end of the base plate, and its vertical projection is parallel to the support blocks. A vibration motor is connected to the lower end of the connecting plate.

[0009] To reduce the impact on cylinder vibration amplitude and facilitate installation, it is preferable to lay a vibration damping pad on the base plate, and a vertically extending support rod is provided on the vibration damping pad, with the extended end of the support rod connected to the lower end face of the base plate.

[0010] To facilitate installation and prevent molding sand from falling and accumulating, it is preferable that the cross-section of the support block and the connecting plate is a tapered structure that is narrower at the top and wider at the bottom.

[0011] To facilitate the collection and transportation of molding sand, the sand discharge assembly preferably includes a secondary support connected to the other side of the support frame and extending horizontally, a first guide rail mounted on the secondary support, a second guide rail mounted on a vibration damping pad and connected to the first guide rail, and a sand collection vehicle slidably mounted on the second guide rail by a grooved wheel.

[0012] To facilitate the positioning of the sand collection vehicle, preferably, a positioning block is provided on one side of the second guide rail and a fixed seat is provided on the other side. A rotating shaft is passed through the fixed seat, and a limiting block is connected to the protruding end on one side of the rotating shaft. The limiting block rotates to the upper surface of the second guide rail to limit the lateral movement of the sand collection vehicle when it vibrates.

[0013] To facilitate the movement of the limiting rod and avoid limiting deviation, preferably, a proximity switch is provided on one side of the support block, and a through hole is provided on the side of the support block corresponding to the position of the proximity switch. The protruding end of the limiting rod at the corresponding position extends into the through hole, and the upper end face of the limiting rod is flush with the upper end face of the support block.

[0014] To improve the efficiency of intelligent production, preferably, the air pump, cylinder, proximity switch, linear motor and vibration motor are all connected to the PLC controller.

[0015] Beneficial effects: This utility model is equipped with a transmission mechanism and a lifting component carrying a vibration component, which facilitates the leveling of the molding sand in the sand box during transportation. At the same time, a limiting component is also set to prevent the sand box from vibrating and shifting. In addition, a sand discharge component is set to facilitate the collection of molding sand that falls during transportation, thereby improving production efficiency and reducing production costs. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the mounting structure of the base plate and the vibration motor.

[0019] Figure 3 for Figure 1 View A in the diagram.

[0020] Figure 4 This is a schematic diagram of the installation structure of the first and second guide rails.

[0021] The meanings of the labels in the attached diagram are as follows:

[0022] Support frame-1; Linear motor-10; Limiting rod-11;

[0023] Strut-2; Drive shaft-20; Power motor-21; Bracket-30; Cylinder-31; Connecting rod-32; Support plate-33;

[0024] Base plate-4; Support block-40; Connecting plate-41; Vibration motor-42; Vibration damping pad-43; Support rod-44; Sub-support-5; First guide rail-50; Second guide rail-51; Sand collection car-52; Grooved wheel-53;

[0025] Positioning block-6, fixing seat-60, limit block-61; proximity switch-7. Detailed Implementation

[0026] Depend on Figures 1 to 4 As shown, this utility model includes a support frame 1, a conveying mechanism for transporting sand boxes mounted on the support frame 1, a limiting mechanism mounted on the support frame 1 and located on one side of the conveying mechanism, a lifting assembly mounted on the support frame 1 and located below the conveying mechanism, a vibration assembly mounted on the lifting assembly, and a sand discharge assembly mounted on the support frame 1 and located on the other side of the conveying mechanism. The limiting mechanism includes two limiting assemblies symmetrically arranged on the support frame 1 along the conveying direction. Each limiting assembly includes a linear motor 10 fixed on the support frame 1. The output end of the linear motor 10 is provided with a vertically upward extending limiting rod 11. A proximity switch 7 is provided on one side of the support block 2. A through hole is provided on one side of the support block 2 corresponding to the position of the proximity switch 7. The protruding end of the limiting rod 11 at the corresponding position extends into the through hole, and the upper end surface of the limiting rod 11 is flush with the upper end surface of the support block 2 and ready for use.

[0027] Specifically, the conveying mechanism includes two parallel support blocks 2 and multiple drive shaft groups arranged between the two support blocks 2. Each drive shaft group includes several drive shafts 20 arranged parallel to each other along the length direction of the support block 2 between the two support blocks 2. A power motor 21 is provided on one side of the support block 2 near the sand box insertion end. The output end of the power motor 21 is connected to a drive shaft 20 at a corresponding position. In each drive shaft group, adjacent two drive shafts 20 are connected by chain drive.

[0028] The lifting assembly includes a bracket 30 connected to the support frame 1 and a cylinder 31 mounted on the bracket 30 and connected to an air pump (not shown). The output end of the cylinder 31 is provided with a connecting rod 32 extending upward through the bracket 30, and the end of the connecting rod 32 is provided with a support plate 33 for bearing the vibration assembly.

[0029] The vibration assembly includes a frame-shaped base plate 4 connected to the support plate 33. Support blocks 40 are provided at the upper end of the base plate 4 at positions corresponding to the two transmission shafts 10. A connecting plate 41 is connected to the lower end of the base plate 4, and its projection in the vertical direction is parallel to that of the support blocks 40. A vibration motor 42 is connected to the lower end of the connecting plate 41. The cross-sections of the support blocks 40 and the connecting plate 41 are both tapered structures that are narrower at the top and wider at the bottom.

[0030] Vibration damping pads 43 are laid on the base plate 4, and vertically upward-extending support rods 44 are provided on the vibration damping pads 43. The extended ends of the support rods 44 are connected to the lower end face of the base plate 4.

[0031] The sand discharge assembly includes a secondary support 5 connected to the other side of the support frame 1 and extending horizontally, a first guide rail 50 disposed on the secondary support 5, a second guide rail 51 disposed on the vibration damping pad 43 and communicating with the first guide rail 50, and a sand collection cart 52 slidably disposed on the second guide rail 51 by a grooved wheel 53; a positioning block 6 is provided on one side of the second guide rail 51, and a fixing seat 60 is provided on the other side. A rotating shaft is passed through the fixing seat 60, and a limiting block 61 is connected to the protruding end on one side of the rotating shaft. The limiting block 61 rotates to the upper end face of the second guide rail 51 to limit the lateral movement of the sand collection cart 52 during vibration.

[0032] The air pump, cylinder 31, proximity switch 7, linear motor 10, and vibration motor 42 are all connected to the PLC controller.

[0033] The working principle of this utility model is as follows:

[0034] like Figures 1 to 4 As shown, during installation, two support blocks 2 are parallel to each other and fixed on the support frame 1. Multiple drive shaft groups are arranged parallel to each other between the two support blocks 2 along the length direction of the support blocks 2. Each drive shaft group includes several drive shafts 20 arranged parallel to each other between the two support blocks 2 along the length direction of the support blocks 2. A power motor 21 is provided on one side of the support block 2 near the sand box insertion end. The output end of the power motor 21 is connected to a drive shaft 20 at the corresponding position. In each drive shaft group, two adjacent drive shafts 20 are connected by chain drive. Under pressure, the transmission power of the drive shafts 20 is fully guaranteed.

[0035] In addition, a bracket 30 is connected to the support frame 1, and a cylinder 31 connected to the air pump is installed on the bracket 30. The output end of the cylinder 31 is provided with a connecting rod 32 that extends upward through the bracket 30. A support plate 33 is provided at the end of the connecting rod 32. A vibration damping pad 43 is laid on the upper surface of the support plate 33. Four vertically extending support rods 43 are provided on the vibration damping pad 43. The extended ends of the four support rods 43 are all connected to the lower surface of the frame-shaped base plate 4. Support blocks 40 are provided at the positions corresponding to the two transmission shafts 10 on the upper surface of the base plate 4. Two connecting plates 41 are connected to the lower surface of the base plate 4. The vertical projections of the connecting plates 41 are perpendicular to the support blocks 40. The cross-sections of the support blocks 40 and the connecting plates 41 are tapered structures that are narrow at the top and wide at the bottom. A vibration motor 42 is connected to the lower end of each connecting plate 41 to make the molding sand vibrate more evenly.

[0036] Meanwhile, a horizontally extending secondary support 5 is connected to the other side of the support frame 1. A first guide rail 50 is set on the secondary support 5, and a second guide rail 51 communicating with the first guide rail 50 is set on the vibration damping pad 43. The sand collection car 52 is slidably connected to the second guide rail 51 by the grooved wheel 53. In order to prevent the sand collection car from shifting due to vibration, a positioning block 6 is provided on one side of the second guide rail 51, and a fixed seat 60 is provided on the other side. A rotating shaft is passed through the fixed seat 60, and a limiting block 61 is connected to the protruding end on one side of the rotating shaft. The limiting block 61 rotates to the upper end face of the second guide rail 51 to limit the lateral movement of the sand collection car 52 during vibration.

[0037] In use, after the sand box receives the material, it is transferred to the drive shaft 20 on the support frame 1. Multiple power motors 21 start simultaneously, and the sand box moves with the rotation of the drive shaft 20. When the sand box moves to the position of the proximity switch 7, the proximity switch 7 sends a signal to the PLC controller, and then the PLC controller sends a start command to the linear motor 10 away from the feeding position. The corresponding linear motor 10 drives the limit rod 11 to extend upward and abut against the outer wall of the front end of the sand box in the direction of movement. Subsequently, the PLC controller sends another start command to the linear motor 10 near the feeding position. The corresponding linear motor 10 drives the limit rod 11 to extend upward and abut against the outer wall of the rear end of the sand box in the direction of movement. In this way, the sand box can be prevented from deviating in the direction of movement during vibration.

[0038] Then, the PLC controller starts cylinder 31, which drives the base plate 4, support block 40 and sand collection cart 52 to move upward simultaneously until the support block 40 pushes against the sand box and moves upward and the lower end face of the sand box leaves the drive shaft 20. At this time, the PLC controller shuts off cylinder 31 and starts vibration motor 42. During vibration, the limit rod 11 remains in contact with the outer wall of the sand box. In addition, the positioning block 6 and the limit block 61 restrict the sand collection cart 52 from moving laterally during vibration.

[0039] During vibration, molding sand overflows and residual molding sand falls off the outer wall of the sand box. At this time, the cross-section of the support block 40 and the connecting plate 41 is a tapered structure with a narrow top and a wide bottom. In addition, the bottom plate 4 of the frame structure allows the falling molding sand to fall directly onto the sand collection car 52 from the inclined surface of the tapered structure and the hollow part of the frame structure, which can prevent the accumulation of molding sand on the device and facilitate the cleaning of the production site.

[0040] After the molding sand is vibrated and leveled, the PLC controller starts cylinder 31, which moves the base plate 4, support block 40, and sand collection cart 52 downwards simultaneously. After they return to their positions, the PLC controller closes cylinder 31 and starts linear motor 10. The limit rod 11 moves downwards, and the sand box continues to move with the rotation direction of the drive shaft 20 after it is no longer blocked by the limit. When production is completed, the limit block 61 is flipped away from the upper surface of the second guide rail 51, and the sand collection cart 52 is pulled out and moved to the connected first guide rail 50 to transfer the fallen and collected molding sand out for processing, so that it can continue to be used as raw material for production. After the molding sand is transferred out, the sand collection cart 52 is pushed back to the second guide rail 51, and then the limit block 61 is flipped to the upper surface of the second guide rail 51 to limit the placement of the sand collection cart 52.

[0041] It should be noted that the sand box moves between the two support blocks 2 as the drive shaft 20 rotates. A convenient hand-held frame is typically provided around the outside of the sand box, and the width of the frame is greater than the length of the drive shaft 20. That is, the frame should be positioned above the support blocks 2. Figure 3 As shown in the diagram, when the outer wall of the frame is close to the proximity switch 7, the proximity switch 7 sends a signal to the PLC controller, which then sends a start command to the linear motor 10 located away from the feeding position. This causes the corresponding limit rod 11 to extend upwards in time and stop the sand box. The other limit rod 11 extends upwards afterward and stops the sand box at the rear in the direction of movement. The axial linear distance between the two limit rods 11 is adapted to the length of the sand box. Combined with the limiting between the two support blocks 2, during the process of the support block 40 lifting the sand box upwards and vibrating, the movement of the sand box in the non-moving direction is minimized while vibrating.

[0042] Throughout the entire usage process, for ease of installation and connection, the PLC controller should preferably be placed on one side of the support frame 1. The use of the PLC controller only involves turning the corresponding working parts on and off. The operation intervals between the parts should be collected during the debugging phase and input into the PLC controller in advance. It does not involve any modification to the utility program. Therefore, the connection of the PLC controller in this embodiment will not be described in detail.

Claims

1. A sand box conveying device with limiting vibration, characterized in that: The system includes a support frame (1), a conveying mechanism mounted on the support frame (1) for conveying sand boxes, a limiting mechanism mounted on the support frame (1) and located on one side of the conveying mechanism, a lifting assembly mounted on the support frame (1) and located below the conveying mechanism, a vibration assembly mounted on the lifting assembly, and a sand discharge assembly mounted on the support frame (1) and located on the other side of the conveying mechanism. The limiting mechanism includes two limiting assemblies symmetrically mounted on the support frame (1) along the conveying direction. Each limiting assembly includes a linear motor (10) fixed on the support frame (1). The output end of the linear motor (10) is provided with a vertically upward extending limiting rod (11). The upper end face of the limiting rod (11) is flush with the upper end face of the corresponding position in the conveying mechanism.

2. The sand box conveying device with limiting vibration as described in claim 1, characterized in that: The conveying mechanism includes two parallel support blocks (2) and multiple drive shaft groups arranged between the two support blocks (2). Each drive shaft group includes several drive shafts (20) arranged parallel to each other along the length of the support block (2) between the two support blocks (2). A power motor (21) is provided on one side of the support block (2) near the sand box insertion end. The output end of the power motor (21) is connected to a drive shaft (20) at the corresponding position. In each drive shaft group, two adjacent drive shafts (20) are connected by chain drive.

3. The sand box conveying device with limiting vibration as described in claim 2, characterized in that: The lifting assembly includes a bracket (30) connected to the support frame (1) and a cylinder (31) mounted on the bracket (30) and connected to the air pump. The output end of the cylinder (31) is provided with a connecting rod (32) extending upward through the bracket (30), and the end of the connecting rod (32) is provided with a support plate (33) for bearing the vibration assembly.

4. The sand box conveying device with limiting vibration as described in claim 3, characterized in that: The vibration assembly includes a frame-shaped base plate (4) connected to the support plate (33). Support blocks (40) are provided at the upper end of the base plate (4) at the positions between the two transmission shafts (20). A connecting plate (41) is connected to the lower end of the base plate (4), and its projection in the vertical direction is parallel to that of the support blocks (40). A vibration motor (42) is connected to the lower end of the connecting plate (41).

5. The sand box conveying device with limiting vibration as described in claim 4, characterized in that: A vibration damping pad (43) is laid on the base plate (4), and a vertically extending support rod (44) is provided on the vibration damping pad (43). The extended end of the support rod (44) is connected to the lower end face of the base plate (4).

6. The sand box conveying device with limiting vibration as described in claim 4, characterized in that: The cross-sections of the support block (40) and the connecting plate (41) are both tapered structures that are narrow at the top and wide at the bottom.

7. The sand box conveying device with limiting vibration as described in claim 5, characterized in that: The sand discharge assembly includes a sub-support (5) connected to the other side of the support frame (1) and extending horizontally, a first guide rail (50) disposed on the sub-support (5), a second guide rail (51) disposed on the vibration damping pad (43) and communicating with the first guide rail (50), and a sand collection car (52) slidably disposed on the second guide rail (51) by the grooved wheel (53).

8. The sand box conveying device with limiting vibration as described in claim 7, characterized in that: A positioning block (6) is provided on one side of the second guide rail (51), and a fixed seat (60) is provided on the other side. A rotating shaft is passed through the fixed seat (60), and a limiting block (61) is connected to the protruding end on one side of the rotating shaft. The limiting block (61) rotates to the upper end face of the second guide rail (51) to limit the sand collection vehicle (52) from lateral movement when vibrating.

9. The sand box conveying device with limiting vibration as described in claim 4, characterized in that: A proximity switch (7) is provided on one side of the support block (2). A through hole is provided on one side of the support block (2) corresponding to the position of the proximity switch (7). The protruding end of the limiting rod (11) at the corresponding position extends into the through hole, and the upper end face of the limiting rod (11) is flush with the upper end face of the support block (2).

10. The sand box conveying device with limiting vibration as described in claim 9, characterized in that: The air pump, cylinder (31), proximity switch (7), linear motor (10), and vibration motor (42) are all connected to the PLC controller.

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