Part stacking system
By designing the rack, moving lifting gantry and transfer vehicle drive trolley in mechanical manufacturing, the height and position exchange between the stacking and discharge levels, the pause of the robot due to the capacity limit of a single transfer vehicle is solved. Improves stacking efficiency and reduces costs.
Patent Information
- Application Number
- CN202420888538.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-25
AI Technical Summary
In mechanical manufacturing, the long pause time caused by the robotic arm during the parts stacking process due to the capacity limit of a single transfer truck affects the stacking efficiency, and increases the movement complexity of the robotic arm and structural control requirements, increasing costs.
A part stacking system was designed, including a rack, a mobile lifting gantry and a transfer vehicle. By moving the lifting gantry and the transfer vehicle, the height and position exchange of the trolley between the stacking and discharge levels is realized. Quick positional adjustment reduces robotic arm pause time.
By quickly exchanging the trolley position, the working pause time of the robot arm is reduced, the stacking efficiency is improved, and the movement complexity and structural requirements of the robot arm are reduced.
Smart Images
Figure CN222137708U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of mechanical manufacturing supporting equipment, and in particular to a parts stacking system. Background Art
[0002] In the field of mechanical manufacturing, in order to realize production automation, robotic arms are often used to transfer parts. In the process of using robotic arms to stack parts, usually only a single transfer vehicle is set up. The robotic arm puts the parts into the transfer vehicle one by one. When the transfer vehicle reaches the capacity limit, the robotic arm needs to stop the stacking process and wait for the staff to push the fully loaded transfer vehicle away and park the empty transfer vehicle to the stacking position before continuing the stacking process. During this period, the pause time of the robotic arm is relatively long, which affects the efficiency of stacking.
[0003] If several stacking positions for parking transfer vehicles are set next to the robotic arm, the actions made by the robotic arm when stacking materials at different stacking positions are completely different, which greatly increases the complexity of the robotic arm's movement, places high requirements on the structure and control of the robotic arm, and is not conducive to cost control. Summary of the invention
[0004] In order to solve at least one of the above technical problems, the present application provides a parts stacking system, and the technical solution adopted is as follows:
[0005] The present application provides a parts stacking system, which includes a frame, a movable lifting gantry, and a transfer vehicle. The frame includes a stacking position and a discharging position, both of which are used to place a trolley. The trolley stacks parts at the stacking position, and the trolley moves out of the parts stacking system at the discharging position. The movable lifting gantry is movably arranged on the frame, and the movable lifting gantry can drive the trolley to change height and move. The transfer vehicle is movably arranged on the frame, and the transfer vehicle can drive the trolley to move. wherein, the movable lifting gantry drives the corresponding trolley to transfer between the stacking position and the discharging position at a high position, and the transfer vehicle drives the corresponding trolley to transfer between the stacking position and the discharging position at a low position, so that the two trolleys exchange positions.
[0006] In certain embodiments of the present application, a first moving component and a first driving structure are provided between the movable lifting gantry and the frame, and the first driving structure drives the first moving component to move so that the movable lifting gantry moves horizontally between the stacking position and the discharging position.
[0007] In certain embodiments of the present application, a first guide assembly is provided between the movable lifting gantry and the frame, and the movable lifting gantry moves horizontally along the first guide assembly.
[0008] In certain embodiments of the present application, a second driving structure is provided on the mobile lifting gantry, and the second driving structure drives the mobile lifting gantry to raise or lower the height so that the mobile lifting gantry can move vertically between a high position and a low position.
[0009] In certain embodiments of the present application, a second guide assembly is provided on the movable lifting gantry, and the movable lifting gantry moves vertically along the second guide assembly.
[0010] In certain embodiments of the present application, a plurality of load-bearing components are provided on the movable lifting gantry, and the load-bearing components include load-bearing plates. Each of the load-bearing plates can move on the load-bearing components and extend into the bottom of the trolley to bear the weight of the trolley.
[0011] In certain embodiments of the present application, a second moving assembly and a third driving structure are provided between the transfer vehicle and the frame, and the third driving structure drives the second moving assembly to move so that the transfer vehicle moves horizontally between the stacking position and the discharging position.
[0012] In certain embodiments of the present application, a third guide assembly is provided on the frame, and the transfer vehicle moves horizontally along the third guide assembly.
[0013] In certain embodiments of the present application, a support platform is provided on the transfer vehicle, and a fourth driving structure is provided on the support platform. The fourth driving structure drives the support platform to increase its height so that the support platform bears the weight of the trolley.
[0014] In certain embodiments of the present application, a placement structure is provided on the frame, and the placement structure is located at the stacking position and supports the trolley so that movement space is left at the bottom of the trolley, and the transfer vehicle can enter the movement space and reach the bottom of the trolley.
[0015] The embodiments of the present application have at least the following beneficial effects: in the present application, the transfer cart is initially at the stacking position, and the robotic arm continuously places parts into the trolley at the stacking position until the trolley is fully loaded; the mobile lifting gantry is initially at the low position of the discharge position. When the trolley is loaded at the discharge position, the mobile lifting gantry drives the trolley at the discharge position to increase its height, so there is a height difference between the trolley at the stacking position and the trolley at the discharge position; the transfer cart drives the trolley on it to move to the discharge position, and the mobile lifting gantry drives the trolley on it to move to the top of the stacking position, and the mobile lifting gantry then drives the trolley on it to lower its height until it is placed at the stacking position, completing the position exchange of the two trolleys; after a short period of trolley position exchange, the robotic arm can continue to load parts on another non-fully loaded trolley, reducing the working pauses of the robotic arm and improving the stacking efficiency, and the fully loaded trolley can be moved out of the parts stacking system from the discharge position, thereby transporting the parts.
[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0018] Figure 1 It is a structural schematic diagram of the parts stacking system of the present application;
[0019] Figure 2 is a top view of the parts stacking system of the present application;
[0020] Figure 3 This is the parts stacking system for this application Figure 1 A partial enlarged view of part I;
[0021] Figure 4 This is the parts stacking system for this application Figure 1 A partial enlarged view of part II;
[0022] Figure 5 This is the parts stacking system for this application Figure 1 A partial enlarged view of part III;
[0023] Figure 6 This is the parts stacking system for this application Figure 1 A partial enlarged view of part IV;
[0024] Figure 7 This is the parts stacking system for this application Figure 1 A partial enlarged view of the middle V part.
[0025] Reference numerals:
[0026] Frame 101; stacking position 102; discharging position 103; placement structure 104;
[0027] Mobile lifting gantry 201; first mobile assembly 202; first driving structure 203; first guide assembly 204;
[0028] A second driving structure 301; a second guide assembly 302;
[0029] Connecting part 401; carrying plate 402; driving part 403; pushing part 404;
[0030] Transfer vehicle 501; second moving assembly 502; third guiding assembly 503; supporting platform 504; fourth driving structure 505. DETAILED DESCRIPTION
[0031] This section will combine Figures 1 to 6 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0032] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application 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, and therefore cannot be understood as a limitation on the present application. The features defined as "first" and "second" are used to distinguish the feature names, rather than having special meanings. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.
[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] like Figure 1 As shown, the embodiment of the present application provides a parts stacking system, which includes a frame 101, a mobile lifting gantry 201 and a transfer vehicle 501. The frame 101 is used to carry the mobile lifting gantry 201 and the transfer vehicle 501. In the parts stacking system, the structure for placing parts is a trolley, and the mobile lifting gantry 201 and the transfer vehicle 501 are both used to carry and adjust the position of the trolley. As the position of the trolley changes, the parts in the trolley are also transferred together.
[0035] A stacking position 102 and a discharging position 103 are set in the frame 101. In the initial state, there are trolleys at both the stacking position 102 and the discharging position 103, and the external robotic arm can place parts on the trolley at the stacking position 102. The movable lifting gantry 201 is at the discharging position 103 in the initial state, and the transfer vehicle 501 is at the stacking position 102 in the initial state. As the robotic arm stacks materials, the trolley at the stacking position 102 is gradually fully loaded, that is, a fully loaded trolley, while the trolley at the discharging position 103 can continue to place parts, that is, a non-fully loaded trolley. In order to simplify the movement of the robotic arm, the movable lifting gantry 201 and the transfer vehicle 501 can cooperate to swap the positions of the fully loaded trolley and the non-fully loaded trolley in a short time, so that the robotic arm can continue to stack materials at the stacking position 102, shortening the working pause time of the robotic arm.
[0036] Specifically, the mobile lifting gantry 201 raises the height of the non-full-loaded trolley, so that the non-full-loaded trolley and the fully-loaded trolley form a height difference. After the height difference is formed, the transfer vehicle 501 transports the fully-loaded trolley to the discharge position 103, and at the same time, the mobile lifting gantry 201 transports the non-full-loaded trolley to the stacking position 102, thereby completing the position swap of the fully-loaded trolley and the non-full-loaded trolley. It is understandable that the mobile lifting gantry 201 and the transfer vehicle 501 need to be reset after completing the swap of the trolleys, in preparation for the subsequent swap work, and then the mobile lifting gantry 201 returns to the discharge position 103, and the transfer vehicle 501 returns to the stacking position 102.
[0037] The fully loaded trolley at the discharge position 103 can be further transported to the outside of the parts stacking system, so that the parts carried by the fully loaded trolley can be put into production. After the fully loaded trolley is moved out of the parts stacking system, the external non-fully loaded trolley can be transported to the discharge position 103 for standby to receive subsequent parts.
[0038] like Figure 2 As shown, in some examples, the stacking position 102 and the discharging position 103 inside the frame 101 are arranged in parallel. Since the transfer vehicle 501 needs to reciprocate between the stacking position 102 and the discharging position 103 at a relatively small height, sufficient space needs to be reserved inside the frame 101 at the corresponding height of the movement of the transfer vehicle 501 to ensure that the movement path of the transfer vehicle 501 and the trolley carried by the transfer vehicle 501 is unobstructed, and structural interference of the transfer vehicle 501 during the movement is avoided. Similarly, since the mobile lifting gantry 201 needs to reciprocate between the stacking position 102 and the discharging position 103 at a relatively large height, sufficient space also needs to be reserved inside the frame 101 at the corresponding height of the movement of the mobile lifting gantry 201 to ensure that the movement path of the mobile lifting gantry 201 and the trolley carried by the mobile lifting gantry 201 is unobstructed, and structural interference of the mobile lifting gantry 201 during the movement is avoided.
[0039] In some examples, the trolley carried by the transfer vehicle 501 is at the top of the transfer vehicle 501. After the fully loaded trolley and the partially loaded trolley are swapped, the transfer vehicle 501 needs to be reset to the stacking position 102. At this time, there is a partially loaded trolley at the stacking position 102. Since the transfer vehicle 501 itself also has a certain height, if the partially loaded trolley is on the ground, it is difficult for the transfer vehicle 501 to move to the bottom of the partially loaded trolley.
[0040] Therefore, a placement structure 104 is provided on the frame 101, and the placement structure 104 is located at the stacking position 102, and the placement structure 104 has a certain height. When the placement structure 104 supports the trolley, there is a movement space from the bottom of the trolley to the ground, and the height of the movement space corresponds to the height of the transfer vehicle 501, ensuring that the transfer vehicle 501 can enter smoothly. On this basis, the transfer vehicle 501 naturally moves to the bottom of the non-full-loaded trolley during the resetting process, which is convenient for the subsequent exchange work to continue.
[0041] It is understandable that when the mobile lifting gantry 201 transports the partially loaded trolley to the material stacking position 102 , the mobile lifting gantry 201 can simply place the partially loaded trolley on the placement structure 104 .
[0042] like Figure 7 As shown, in some examples, a support platform 504 is provided on the transfer vehicle 501, and the support platform 504 can move vertically. When the transfer vehicle 501 is at the stacking position 102 in the initial state, the transfer vehicle 501 is at the bottom of the trolley at the stacking position 102, but the transfer vehicle 501 does not form a supporting effect on the trolley at this time, and the trolley is still supported by the placement structure 104. At this time, the support platform 504 is raised in height, contacts and raises the height of the trolley, so that the trolley is separated from the placement structure 104. On this basis, after the trolley is filled with parts to form a fully loaded trolley, the transfer vehicle 501 can transport the trolley to the discharge position 103.
[0043] Furthermore, a fourth driving structure 505 is provided on the support platform 504, and the fourth driving structure 505 drives the support platform 504 to raise its height, so that the support platform 504 contacts and raises the height of the corresponding trolley. The fourth driving structure 505 is located at the bottom of the support platform 504, and the fourth driving structure 505 can adopt any structure that outputs linear motion, such as a cylinder body, an electric push rod, etc.
[0044] In addition, after the transfer vehicle 501 transports the fully loaded trolley to the material discharge position 103, the transfer vehicle 501 needs to be reset to the material stacking position 102. At this time, the fourth driving structure 505 needs to drive the support platform 504 to lower its height to avoid interference between the transfer vehicle 501 and the bottom of the trolley at the material stacking position 102. After the transfer vehicle 501 is reset, the height of the support platform 504 is raised again to load the trolley at the material stacking position 102 again.
[0045] like Figure 3 As shown, in some examples, in order to ensure that the mobile lifting gantry 201 can move between the stacking position 102 and the discharging position 103, a first moving component 202 and a first driving structure 203 are arranged between the mobile lifting gantry 201 and the frame 101, and the first driving structure 203 drives the first moving component 202 to move the mobile lifting gantry 201.
[0046] Furthermore, since the stacking position 102 and the discharging position 103 are arranged in parallel, the first moving assembly 202 needs to output horizontal linear motion. Among them, the first moving assembly 202 can adopt any structure that can output linear motion. Specifically, the first moving assembly 202 adopts a gear and a rack, the rack is arranged on the frame 101, and the rack extends from the discharging position 103 to the stacking position 102, the gear is arranged on the mobile lifting gantry 201, and the gear can rotate on the mobile lifting gantry 201. It can be understood that the position of the rack is fixed, the gear is meshed with the rack, and the rotational motion input to the gear can be converted into the linear motion of the mobile lifting gantry 201.
[0047] Meanwhile, the first driving structure 203 is used to drive the gear to rotate, and the first driving structure 203 is disposed on the mobile lifting gantry 201. The first driving structure 203 can adopt any structure capable of outputting rotational motion. Specifically, the first driving structure 203 adopts a motor.
[0048] like Figure 4 As shown, in some examples, in order to ensure that the movable lifting gantry 201 can move between the stacking position 102 and the discharging position 103 in a preset linear motion, a first guide assembly 204 is provided between the movable lifting gantry 201 and the frame 101 .
[0049] Furthermore, the first guide assembly 204 includes a slide rail and a slider. The slide rail is disposed on the frame 101 , and the slider is disposed on the movable lifting gantry 201 . The slider can move horizontally along the slide rail, thereby guiding the movement of the movable lifting gantry 201 .
[0050] In some examples, in order to ensure that the movable lifting gantry 201 can lift or lower the height of the corresponding trolley, a second driving structure 301 is provided on the movable lifting gantry 201, and the second driving structure 301 drives the movable lifting gantry 201 to change its height.
[0051] Further, the mobile lifting gantry 201 includes a fixed part and a movable part, the fixed end of the second driving structure 301 is arranged at the fixed part, the output end of the second driving structure 301 is arranged at the movable part, and the second driving structure 301 changes the height of the mobile lifting gantry 201 by increasing or decreasing the distance between the fixed part and the movable part. The second driving structure 301 can adopt any structure capable of outputting linear motion, and specifically, the second driving structure 301 adopts a cylinder.
[0052] like Figure 5 As shown, in some examples, in order to ensure that the movable lifting gantry 201 can be raised or lowered in a preset linear motion, a second guide assembly 302 is provided on the movable lifting gantry 201 .
[0053] Furthermore, the second guide assembly 302 includes a slide rail and a slider. The slide rail is vertically arranged. The slide rail is arranged on the fixed part, and the slider is arranged on the movable part. The slider can move along the slide rail to guide the vertical movement of the movable lifting gantry 201.
[0054] like Figure 5 As shown, in some examples, a bearing assembly is provided on the mobile lifting gantry 201, and the bearing assembly can be supported on the bottom of the trolley, so that the mobile lifting gantry 201 drives the trolley to transfer position, and the bearing assembly is in a bearing state. At the same time, the bearing assembly can also be separated from the bottom of the trolley, so that the mobile lifting gantry 201 can transfer position independently, and it is also convenient for the fully loaded trolley at the discharge position 103 to move out of the parts stacking system, and at this time, the bearing assembly is in a loose state.
[0055] Furthermore, the bearing assembly is disposed at the bottom of the movable lifting gantry 201 , and the bearing assembly includes a connecting portion 401 , a bearing plate 402 , a driving portion 403 and a pushing portion 404 .
[0056] The connection part 401 is connected to the bottom of the mobile lifting gantry 201 as the basis of the bearing assembly. The bearing plate 402 is rotatably connected to the connection part 401. When the bearing plate 402 needs to support the trolley, the bearing plate 402 moves to the bottom of the trolley by rotation. When the bearing plate 402 needs to be separated from the trolley, the bearing plate 402 is separated from the bottom of the trolley by rotation. The driving part 403 is used to drive the bearing plate 402 to rotate accordingly, and the fixed end of the driving part 403 is rotatably connected to the connection part 401. Specifically, the driving part 403 can adopt a structure that can output linear motion, such as a cylinder body and an electric push rod.
[0057] The push part 404 is used to convert the linear motion output by the driving part 403 into a rotational motion, thereby pushing the bearing plate 402 to rotate. One end of the push part 404 is rotationally connected to the connecting part 401, and the other end of the push part 404 is rotationally connected to the output end of the driving part 403. The push part 404, the connecting part 401, and the driving part 403 form a similar connecting rod structure that is rotationally connected to each other. It can be understood that the push part 404 is in contact with the bearing plate 402 to facilitate the transmission of force.
[0058] During use, the driving part 403 outputs linear motion to drive the pushing part 404 to rotate, and the pushing part 404 transmits the rotational force to the supporting plate 402, thereby driving the supporting plate 402 to rotate as well, so that the supporting plate 402 supports or detaches from the bottom of the trolley.
[0059] First, the load-bearing component is in a load-bearing state at the discharge position 103, thereby carrying a non-fully loaded trolley; after the mobile lifting gantry 201 transports the non-fully loaded trolley to the stacking position 102, the load-bearing component is switched to a loose state, so that the load-bearing component can return to the discharge position 103 alone; after the mobile lifting gantry 201 returns to the discharge position 103, the mobile lifting gantry 201 lowers its height to a position suitable for a fully loaded trolley, and the load-bearing component is switched to a load-bearing state, thereby carrying and raising the height of the fully loaded trolley, so that the transfer vehicle 501 at the bottom of the fully loaded trolley can return to the stacking position 102; when the transfer vehicle 501 returns to the stacking position 102, the mobile lifting gantry 201 lowers its height and places the fully loaded trolley on the ground. At this time, the load-bearing component is switched to a loose state, so that the fully loaded trolley can be subsequently removed from the parts stacking system.
[0060] It is worth noting that, due to the large size of the trolley, a single bearing assembly is difficult to stably carry the trolley, so several bearing assemblies are provided on the mobile lifting gantry 201. Specifically, four bearing assemblies are provided on the mobile lifting gantry 201, and the four bearing assemblies support the trolley at four angles of the trolley to ensure the stability of the bearing.
[0061] like Figure 6 As shown, in some examples, in order to ensure that the transfer vehicle 501 can move between the stacking position 102 and the discharging position 103, a second moving component 502 and a third driving structure are arranged between the transfer vehicle 501 and the frame 101, and the third driving structure drives the second moving component 502 to enable the transfer vehicle 501 to move horizontally.
[0062] Furthermore, the second moving assembly 502 needs to output horizontal linear motion, wherein the second moving assembly 502 includes rollers, and the rollers are arranged on the frame 101 , and the rotation of the rollers can drive the transfer vehicle 501 to move horizontally on the frame 101 .
[0063] Meanwhile, the third driving structure is used to drive the roller to rotate, and the third driving structure is arranged on the transfer vehicle 501. The third driving structure can adopt any structure capable of outputting rotational motion. Specifically, the third driving structure adopts a motor.
[0064] In some examples, in order to ensure that the transfer vehicle 501 can move between the stacking position 102 and the discharging position 103 in a preset linear motion, a third guide assembly 503 is provided on the frame 101 .
[0065] Furthermore, the third guide assembly 503 includes a guide rail, which is disposed on the frame 101 , and the rollers can move horizontally along the guide rail, thereby guiding the movement of the transfer vehicle 501 .
[0066] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0067] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.
Claims
1. Parts stacking system, characterized in that: include: A frame, wherein the frame includes a stacking position and a discharging position, wherein the stacking position and the discharging position are both used to place a trolley, wherein the trolley stacks parts at the stacking position, and wherein the trolley is moved out of the parts stacking system at the discharging position; A movable lifting gantry, wherein the movable lifting gantry is movably arranged on the frame, and the movable lifting gantry can drive the trolley to change height and move; A transfer vehicle, which is movably arranged on the frame and can drive the trolley to move; Among them, the movable lifting gantry drives the corresponding trolley to transfer between the stacking position and the discharging position at a high position, and the transfer vehicle drives the corresponding trolley to transfer between the stacking position and the discharging position at a low position, so that the two trolleys exchange positions.
2. The parts stacking system according to claim 1, characterized in that: A first moving assembly and a first driving structure are provided between the movable lifting gantry and the frame, and the first driving structure drives the first moving assembly to move so that the movable lifting gantry moves horizontally between the stacking position and the discharging position.
3. The parts stacking system according to claim 2, characterized in that: A first guide assembly is provided between the movable lifting gantry and the frame, and the movable lifting gantry moves horizontally along the first guide assembly.
4. The parts stacking system according to claim 1, characterized in that: The movable lifting gantry is provided with a second driving structure, and the second driving structure drives the movable lifting gantry to raise or lower the height so that the movable lifting gantry can move vertically between a high position and a low position.
5. The parts stacking system according to claim 4, characterized in that: The movable lifting gantry is provided with a second guide assembly, and the movable lifting gantry moves vertically along the second guide assembly.
6. The parts stacking system according to claim 1, characterized in that: The movable lifting gantry is provided with a plurality of bearing components, and the bearing components include bearing plates. Each of the bearing plates can move on the bearing components and extend into the bottom of the trolley to bear the weight of the trolley.
7. The parts stacking system according to claim 1, characterized in that: A second moving assembly and a third driving structure are provided between the transfer vehicle and the frame, and the third driving structure drives the second moving assembly to move so that the transfer vehicle moves horizontally between the stacking position and the discharging position.
8. The parts stacking system according to claim 7, characterized in that: The frame is provided with a third guide assembly, and the transfer vehicle moves horizontally along the third guide assembly.
9. The parts stacking system according to claim 7, characterized in that: The transfer vehicle is provided with a support platform, and the support platform is provided with a fourth driving structure. The fourth driving structure drives the support platform to increase its height so that the support platform bears the weight of the trolley.
10. The parts stacking system according to claim 9, characterized in that: The frame is provided with a placement structure, which is located at the material stacking position and supports the trolley, so that movement space is left at the bottom of the trolley, and the transfer vehicle can enter the movement space and reach the bottom of the trolley.