A subframe core delivery system

Abstract

This utility model discloses a subframe sand core conveying system, including: a tray, a single-layer conveying mechanism, a transition lifting mechanism, a buffer transition conveying mechanism, and a positioning lift; the single-layer conveying mechanism includes a first frame, on which a first conveying component is mounted; the transition lifting mechanism includes a second frame, a first lifting component, and a second conveying component; the buffer transition conveying mechanism includes a third frame, within which several layers of third conveying components are mounted; the positioning lift includes a fourth frame, a second lifting component, a fourth conveying component, and a positioning component; a sand core clamping component is mounted within the tray, and the tray is conveyed and connected to the first, second, third, and fourth conveying components; this solution provides a complete conveying chain for subframe sand cores from the sand core forming stage to the casting area, which can meet the requirements of single-layer conveying, transition lifting, multi-layer buffering, and positioning lifting for easy part handling.

Description

Technical Field

[0001] This utility model relates to the field of subframe sand core conveying, and in particular to a subframe sand core conveying system. Background Technology

[0002] Due to their ease of molding and high-temperature resistance, sand cores are frequently used in the casting process of subframes. Generally, a sand core structure adapted to the subframe's shape is created using a sand core molding machine or mold. After casting, the sand core needs to be transported to the casting area, where it is gripped by a robotic arm or gripper and placed in the subframe casting mold. Casting liquid is then injected through the casting machine. Once the subframe is formed and removed, the sand core is discarded to obtain the subframe. However, transporting the subframe sand core from the casting area requires adjustments to its height, often involving raising or lowering it. Ordinary conveyor belts or rollers cannot handle this operation, and during transport, the sand core is prone to breakage and cracking due to the insufficient stability of the conveyor belt or rollers, rendering it unusable for the casting. Therefore, there is an urgent need for a subframe sand core transport system to solve these problems. Summary of the Invention

[0003] Therefore, a subframe sand core conveying system that facilitates transportation and positioning / lifting is needed.

[0004] To achieve the above objectives, the inventors provide a subframe sand core conveying system, comprising: a pallet, a single-layer conveying mechanism, a transition lifting mechanism, a buffer transition conveying mechanism, and a positioning lift;

[0005] The single-layer conveying mechanism includes a first frame, on which a first conveying component is provided;

[0006] The transition lifting mechanism includes a second frame, a first lifting component, and a second conveying component. The first lifting component is connected to the second frame, and the second conveying component is connected to the lifting mechanism.

[0007] The buffer transition conveying mechanism includes a third frame, and the third frame is provided with several layers of third conveying components;

[0008] The positioning lift includes a fourth frame, a second lifting assembly, a fourth conveying assembly, and a positioning assembly. The second lifting assembly is connected to the fourth frame, the fourth conveying assembly is connected to the second lifting assembly, and the positioning assembly is respectively disposed on the fourth frame and the second lifting assembly.

[0009] The tray is equipped with a sand core clamping assembly, and the tray is connected to the first conveying assembly, the second conveying assembly, the third conveying assembly, and the fourth conveying assembly.

[0010] As a preferred structure of this utility model, the first conveying component, the second conveying component, the third conveying component and the fourth conveying component each include a servo motor and a conveying roller, and the servo motor is connected to the conveying roller in a driving connection.

[0011] As a preferred structure of this utility model, the first lifting component and the second lifting component respectively include a transmission device, a drive motor and a lifting frame. The transmission device is driven by the drive motor, and the lifting frame is driven by the transmission device. The second conveying component and the fourth conveying component are respectively disposed on the lifting frame.

[0012] As a preferred structure of this utility model, the transmission device includes a transverse transmission shaft and a longitudinal transmission shaft. The transverse transmission shaft is horizontally disposed at the bottom of the second frame and the fourth frame, respectively. The longitudinal transmission shaft is vertically disposed on both sides of the second frame and the fourth frame, respectively. The two ends of the transverse transmission shaft are respectively connected to the bottom end of the longitudinal transmission shaft. The lifting frame is connected to the longitudinal transmission shaft vertically.

[0013] As a preferred structure of this utility model, a coupling and a rotary reducer are respectively provided at the bottom end connection of the transverse transmission shaft and the longitudinal transmission shaft, and the drive motor is connected to the rotary reducer.

[0014] As a preferred structure of this utility model, the longitudinal transmission shaft is a lead screw, and a lead screw nut is sleeved on the lead screw. The lifting frame is connected to the lead screw nut. Lead screw buffer devices are respectively provided at both ends of the longitudinal transmission shaft. The lead screw buffer device includes a lead screw protective sleeve sleeved at both ends of the lead screw, and a buffer spring sleeved on the outside of the lead screw protective sleeve.

[0015] As a preferred structure of this utility model, the first lifting component and the second lifting component each further include a guide component, the guide component is vertically disposed in the second frame and the fourth frame, and the lifting frame is slidably connected to the guide component.

[0016] As a preferred structure of this utility model, the guide assembly includes guide columns that are vertically arranged on both sides of the second frame and the fourth frame, and a sliding device is provided on the guide column. The two sides of the lifting frame are fixedly connected to the sliding device.

[0017] As a preferred structure of this utility model, the sliding device includes a sliding bearing sleeve, a sliding bearing, a spacer, a dustproof seat, and a sealing ring;

[0018] The sliding bearing sleeve is fitted onto the guide post, the sealing ring is located at the top of the sliding bearing sleeve where it connects to the guide post, the dustproof seat is located at the bottom of the sliding bearing sleeve, the sliding bearing and the spacer are located inside the sliding bearing sleeve, and the sliding bearing is located above and below the spacer.

[0019] As a preferred structure of this utility model, the positioning component includes a positioning cylinder and a positioning hole. The positioning cylinder is fixedly mounted on the second lifting component or the fourth frame, and the positioning hole is fixedly mounted on the fourth frame or the second lifting component.

[0020] Unlike existing technologies, the above-mentioned technical solution achieves the following beneficial effects: This system, through the setting of a single-layer conveying mechanism, a transition lifting mechanism, a buffer transition conveying mechanism, and a positioning lifting platform, realizes a complete conveying chain for the subframe sand core from the sand core forming stage to the casting area. It can meet the needs of single-layer conveying, transition lifting, multi-layer buffering, and positioning lifting for easy picking and placing of parts. The entire system can be widely applied to the subframe casting process, effectively improving the conveying efficiency of the subframe sand core and the casting efficiency of the subframe, achieving fully automatic conveying, reducing labor costs, and avoiding health risks to personnel in high-temperature environments. In addition, by setting up a specially designed tray with clamping components to convey the subframe sand core, this system can effectively prevent breakage and cracking during the sand core conveying process, thereby effectively improving the stability and applicability of the entire system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the subframe sand core conveying system as described in the specific implementation method;

[0022] Figure 2 This is a schematic diagram of the single-layer conveying mechanism structure described in a specific embodiment;

[0023] Figure 3 This is a schematic diagram of the transition lifting mechanism structure described in the specific implementation method;

[0024] Figure 4 This is a schematic diagram of the structure of the first lifting component and the second lifting component in a specific implementation method;

[0025] Figure 5 This is a schematic diagram of the guide component structure described in a specific implementation.

[0026] Figure 6 This is a schematic diagram of the buffer transition transport mechanism structure described in a specific implementation method;

[0027] Figure 7 This is a schematic diagram of the positioning component structure of the positioning elevator described in a specific embodiment;

[0028] Figure 8 This is a schematic diagram of the tray structure described in a specific embodiment.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Single-layer conveying mechanism; 101. First frame; 102. First conveying assembly; 2. Transition lifting mechanism; 201. Second frame; 202. First lifting assembly; 203. Second conveying assembly; 3. Buffer transition conveying mechanism; 301. Third frame; 302. Third conveying assembly; 4. Positioning lift; 401. Fourth frame; 402. Second lifting assembly; 403. Fourth conveying assembly; 404. Positioning assembly; 4041. Positioning cylinder; 4042. Positioning hole; 501. Transverse drive shaft; 502. Longitudinal drive shaft; 5021. 5022, Lead screw; 503, Lead screw nut; 504, Coupling; 505, Angle reducer; 506, Drive motor; 507, Lifting frame; 6, Lead screw buffer device; 601, Lead screw protective sleeve; 602, Buffer spring; 701, Servo motor; 702, Transmitter roller; 8, Guide assembly; 801, Guide column; 802, Sliding device; 8021, Sliding bearing sleeve; 8022, Sliding bearing; 8023, Spacer ring; 8024, Dustproof seat; 8025, Sealing ring; 901, Subframe sand core; 902, Tray; 903, Sand core clamping assembly. Detailed Implementation

[0031] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0032] like Figures 1 to 8 As shown, this embodiment provides a subframe sand core conveying system, including: a pallet 902, a single-layer conveying mechanism 1, a transition lifting mechanism 2, a buffer transition conveying mechanism 3, and a positioning lift 4;

[0033] The single-layer conveying mechanism 1 includes a first frame 101, on which a first conveying assembly 102 is provided;

[0034] The transition lifting mechanism 2 includes a second frame 201, a first lifting component 202, and a second conveying component 203. The first lifting component 202 is connected to the second frame 201, and the second conveying component 203 is connected to the lifting mechanism.

[0035] The buffer transition conveying mechanism 3 includes a third frame 301, and the third frame 301 is provided with several layers of third conveying components 302.

[0036] The positioning lift 4 includes a fourth frame 401, a second lifting component 402, a fourth conveying component 403 and a positioning component 404. The second lifting component 402 is connected to the fourth frame 401, the fourth conveying component 403 is connected to the second lifting component 402, and the positioning component 404 is respectively disposed on the fourth frame 401 and the second lifting component 402.

[0037] The pallet 902 is equipped with a sand core clamping assembly 903, and the pallet is connected to the first conveying assembly 102, the second conveying assembly 203, the third conveying assembly 302 and the fourth conveying assembly 403.

[0038] In such Figure 2 As shown, in this embodiment, the single-layer conveying mechanism 1 includes a first frame 101 and a first conveying component 102 disposed on the first frame 101. The single-layer conveying mechanism 1 can be used for manual or robotic arm remote loading, that is, the manual or robotic arm places the tray 902 holding the sand core 901 of the sub-frame onto the single-layer conveying mechanism 1, thereby conveying it to the transition lifting mechanism 2.

[0039] like Figures 3 to 5 As shown, the transition lifting mechanism 2 includes a second frame 201, a first lifting component 202 disposed within the second frame 201, and a second conveying component 203 disposed on the first lifting component 202. In this embodiment, the first lifting component 202 includes a transmission device, a drive motor 505, and a lifting frame 506. The transmission device is connected to the drive motor 505, and the lifting frame 506 is connected to the transmission device. The second conveying component 203 and the fourth conveying component 403 are respectively disposed on the lifting frame 506. In the specific implementation of this embodiment, the drive motor 505 can be a servo motor 701. When the pallet with the subframe sand core is received from the output end of the single-layer conveying mechanism 1, the transmission device drives the lifting frame 506 to rise and fall, so that the input end of the second conveying component 203 is flush with the output end of the first conveying component 102. In this way, the pallet can be smoothly conveyed from the first conveying component 102 to the second conveying component 203. At this time, the drive motor 505 works, and the pallet on the second conveying component 203 can be adjusted to the next station, that is, the height required by the buffer transition conveying mechanism 3, so as to facilitate the multi-layer buffering of the buffer transition conveying mechanism 3.

[0040] like Figure 3 and Figure 4As shown, the transmission device includes a transverse transmission shaft 501 and a longitudinal transmission shaft 502. The transverse transmission shaft 501 is horizontally disposed at the bottom of the second frame 201 and the fourth frame 401, respectively. The longitudinal transmission shaft 502 is vertically disposed on both sides of the second frame 201 and the fourth frame 401, respectively. The two ends of the transverse transmission shaft 501 are respectively connected to the bottom end of the longitudinal transmission shaft 502. The lifting frame 506 is connected to the longitudinal transmission shaft 502 vertically. In the specific implementation of this embodiment, a coupling 503 and a rotary reducer 504 are provided at the connection between the bottom end of the transverse transmission shaft 501 and the longitudinal transmission shaft 502. The drive motor 505 is connected to the rotary reducer 504. The longitudinal drive shaft 502 is a lead screw 5021, with a lead screw nut 5022 fitted on it. The lifting frame 506 is connected to the lead screw nut 5022. Lead screw buffer devices 6 are provided at both ends of the longitudinal drive shaft 502. Each lead screw buffer device 6 includes a lead screw protective sleeve 601 fitted at both ends of the lead screw, and a buffer spring 602 fitted outside the protective sleeve 601. The drive motor 505 drives the transverse drive shaft 501 to rotate, which in turn rotates the longitudinal lead screws on both sides of the second frame 201. The lead screws cause the lead screw nut 5022 to move up and down along the lead screw, thereby achieving the lifting and lowering operation of the lifting frame 506. By setting the lead screw buffer device 6, overload of the drive motor 505 can be effectively prevented, avoiding damage to the lead screw or lead screw nut 5022, as well as the subframe sand core.

[0041] like Figure 4 and Figure 5 As shown, the first lifting assembly 202 also includes a guide assembly 8, which is vertically installed within the second frame 201. The lifting frame 506 is slidably connected to the guide assembly 8. Specifically, the guide assembly 8 includes guide posts 801 vertically installed on both sides of the second frame 201. A sliding device 802 is provided on the guide posts 801, and both sides of the lifting frame 506 are fixedly connected to the sliding device 802. The sliding device 802 includes a sliding bearing sleeve 8021, a sliding bearing 8022, a spacer 8023, a dustproof seat 8024, and a sealing ring 8025. The sliding bearing sleeve 8021 is fitted onto the guide post 801. The sealing ring 8025 is located at the top of the sliding bearing sleeve 8021 where it connects to the guide post 801. The dustproof seat 8024 is located at the bottom of the sliding bearing sleeve 8021. The sliding bearing 8022 and the spacer 8023 are located inside the sliding bearing sleeve 8021, with the sliding bearing 8022 located above and below the spacer 8023, respectively. In this embodiment, the guide component 8 provides stable guidance for the lifting frame 506, preventing it from tilting to one side. In the above embodiment, the lifting frame 506 can be connected to the transmission device and the guide component 8 by providing lugs on its side.

[0042] like Figure 6As shown, the buffer transition conveying mechanism 3 includes a third frame 301, which has several layers of crossbeams. Each layer of crossbeams can be equipped with a third conveying component 302. In this embodiment, two layers are provided, but in different embodiments, multiple layers can be provided, which can be adjusted as needed. The buffer transition conveying mechanism 3 achieves the purpose of buffer transition by setting several layers of third conveying components 302. That is, the subframe sand cores conveyed by the transition lifting mechanism 2 can be temporarily buffered by this mechanism, making it convenient for the next mechanism to convey and load the material one by one.

[0043] like Figure 3 and Figure 7 As shown, the second lifting component 402 of the positioning lifting mechanism 4 can adopt the same structure as the first lifting component 202 of the transition lifting mechanism 2 to achieve lifting. Of course, in different embodiments, other structures can also be adopted. This mechanism performs the final lifting operation, raising the subframe sand core to a height suitable for the casting machine's robotic arm to pick up and place parts. In this embodiment, the positioning lifting mechanism 4 also includes a positioning component 404, which specifically consists of a positioning cylinder 4041 and a positioning hole 4042. The positioning cylinder 4041 is fixedly mounted on the second lifting component 402 or the fourth frame 401, and the positioning hole 4042 is fixedly mounted on the fourth frame 401 or the second lifting component 402. The positioning component 404 is not only used for positioning the fourth conveying component 403 after it has been raised to a position corresponding to several third conveying mechanisms, but also for positioning the fourth conveying component 403 after it has been conveyed to a height suitable for the casting machine's robotic arm to pick up and place parts. This prevents sudden lifting and lowering fluctuations of the fourth conveying component 403 during the picking process, which could lead to inaccurate picking positions and result in the subframe sand core not being picked up or being broken.

[0044] like Figure 8 As shown, in this embodiment, in order to improve the stability of the subframe sand core 901 during the conveying process and avoid breakage, a sand core clamping assembly 903 is provided inside the pallet 902. The sand core clamping assembly 903 is used to fix the subframe sand core 901. In addition, the pallet 902 is connected to the first conveying assembly 102, the second conveying assembly 203, the third conveying assembly 302 and the fourth conveying assembly 403. During the conveying process, the output end of the previous conveying assembly is flush with the input end of the next conveying assembly, which is achieved through automatic control.

[0045] In the above embodiments, such as Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, the first conveying component 102, the second conveying component 203, the third conveying component 302 and the fourth conveying component 403 can all be composed of a servo motor 701 and a conveying roller 702, with the servo motor 701 and the conveying roller 702 being connected in a transmission manner.

[0046] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A subframe sand core conveying system, characterized in that, include: Pallets, single-layer conveyor mechanisms, transition lifting mechanisms, buffer transition conveyor mechanisms, and positioning lifts; The single-layer conveying mechanism includes a first frame, on which a first conveying component is provided; The transition lifting mechanism includes a second frame, a first lifting component, and a second conveying component. The first lifting component is connected to the second frame, and the second conveying component is connected to the lifting mechanism. The buffer transition conveying mechanism includes a third frame, and the third frame is provided with several layers of third conveying components; The positioning lift includes a fourth frame, a second lifting assembly, a fourth conveying assembly, and a positioning assembly. The second lifting assembly is connected to the fourth frame, the fourth conveying assembly is connected to the second lifting assembly, and the positioning assembly is respectively disposed on the fourth frame and the second lifting assembly. The tray is equipped with a sand core clamping assembly, and the tray is connected to the first conveying assembly, the second conveying assembly, the third conveying assembly, and the fourth conveying assembly.

2. The subframe sand core conveying system according to claim 1, characterized in that: The first conveying component, the second conveying component, the third conveying component, and the fourth conveying component each include a servo motor and a conveying roller, and the servo motor is connected to the conveying roller in a driving connection.

3. The subframe sand core conveying system according to claim 1, characterized in that: The first lifting assembly and the second lifting assembly each include a transmission device, a drive motor and a lifting frame. The transmission device is driven by the drive motor and the lifting frame is driven by the transmission device. The second conveying assembly and the fourth conveying assembly are respectively disposed on the lifting frame.

4. The subframe sand core conveying system according to claim 3, characterized in that: The transmission device includes a transverse transmission shaft and a longitudinal transmission shaft. The transverse transmission shaft is horizontally installed at the bottom of the second frame and the fourth frame, respectively. The longitudinal transmission shaft is vertically installed on both sides of the second frame and the fourth frame, respectively. The two ends of the transverse transmission shaft are respectively connected to the bottom end of the longitudinal transmission shaft. The lifting frame is connected to the longitudinal transmission shaft vertically.

5. The subframe sand core conveying system according to claim 4, characterized in that: The bottom ends of the transverse drive shaft and the longitudinal drive shaft are respectively provided with a coupling and a rotary reducer, and the drive motor is connected to the rotary reducer.

6. The subframe sand core conveying system according to claim 4, characterized in that: The longitudinal drive shaft is a lead screw, and a lead screw nut is fitted on the lead screw. The lifting frame is connected to the lead screw nut. Lead screw buffer devices are respectively provided at both ends of the longitudinal drive shaft. The lead screw buffer device includes a lead screw protective sleeve fitted on both ends of the lead screw, and a buffer spring fitted on the outside of the lead screw protective sleeve.

7. The subframe sand core conveying system according to claim 3, characterized in that: The first lifting assembly and the second lifting assembly each further include a guide assembly, which is vertically disposed within the second frame and the fourth frame, and the lifting frame is slidably connected to the guide assembly.

8. The subframe sand core conveying system according to claim 7, characterized in that: The guide assembly includes guide columns that are vertically arranged on both sides of the second frame and the fourth frame, and a sliding device is provided on the guide column. Both sides of the lifting frame are fixedly connected to the sliding device.

9. The subframe sand core conveying system according to claim 8, characterized in that: The sliding device includes a sliding bearing sleeve, a sliding bearing, a spacer, a dustproof seat, and a sealing ring; The sliding bearing sleeve is fitted onto the guide post, the sealing ring is located at the top of the sliding bearing sleeve where it connects to the guide post, the dustproof seat is located at the bottom of the sliding bearing sleeve, the sliding bearing and the spacer are located inside the sliding bearing sleeve, and the sliding bearing is located above and below the spacer.

10. The subframe sand core conveying system according to any one of claims 1 to 9, characterized in that: The positioning component includes a positioning cylinder and a positioning hole. The positioning cylinder is fixedly mounted on the second lifting component or the fourth frame, and the positioning hole is fixedly mounted on the fourth frame or the second lifting component.

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