A dual stroke feeding device
Patent Information
- Application Number
- CN202522062195.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-24
AI Technical Summary
[0004]针对上述中的相关技术，由于MEB件尺寸规格不一致，固定高度的抓取机构无法灵活调整行程或位置，在抓取不同尺寸零件时，易因抓取点偏差导致零件与机械手、槽体或其他部件发生碰撞，轻则造成零件表面损伤，重则导致零件报废，增加生产成本；同时，碰撞风险迫使生产中需频繁停机调整机械手参数，严重降低生产效率
1.第一移动架与第二移动架在高度方向的相对移动，形成了行程叠加，能够灵活调节置物组件的高度，有效适配不同尺寸汽车MEB件的转运需求，避免了因高度固定导致的零件与其他部件碰撞的问题，减少了零件表面损伤及报废的情况；两层移动架的联动通过传动组件稳定实现，且两层移动架的驱动只采用了一个驱动装置，减少了动力件的使用，显著提升了转运过程的效率；
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Figure CN224715863U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of automotive parts manufacturing, and in particular to a dual-stroke feeding device. Background Technology
[0002] The main equipotential bonding (MEB) component is a key safety component in the electrical systems of both new energy vehicles and traditional fuel vehicles. Its production process requires strict control over appearance quality to ensure the accuracy of subsequent assembly.
[0003] In the processing of MEB parts, metal shavings easily remain on their surfaces due to cutting, stamping, and other processes. Simultaneously, cleaning is required to remove these shavings, and moisture remains on the outer wall after cleaning, necessitating further drying. Therefore, MEB parts need to be transferred between cleaning and drying tanks, and the stability of this feeding process directly affects product quality and production efficiency. Currently, the industry commonly uses fixed-height robotic arms as the feeding device for MEB parts between the cleaning and drying tanks. This feeding device achieves part gripping and transfer through a preset stroke.
[0004] Regarding the aforementioned technologies, due to the inconsistent dimensions of MEB parts, the fixed-height gripping mechanism cannot flexibly adjust its stroke or position. When gripping parts of different sizes, the gripping point deviation is prone to causing the parts to collide with the robot, the tank, or other components. This can result in minor surface damage to the parts or even scrapping them, increasing production costs. At the same time, the risk of collisions forces frequent shutdowns during production to adjust the robot parameters, severely reducing production efficiency. Utility Model Content
[0005] In view of the shortcomings of the existing technology, one of the objectives of this utility model is to provide a dual-stroke feeding device.
[0006] This application provides a dual-stroke feeding device, which adopts the following technical solution: The dual-stroke feeding device includes a fixed frame, a first movable frame, a first transmission assembly, a drive sprocket, a second movable frame, a second transmission assembly, and a placement assembly. The first movable frame is slidably mounted on the fixed frame. The first transmission assembly is installed at the top and bottom of the fixed frame. The drive sprocket is connected to the first transmission assembly and is used to connect to an external drive device. The first transmission assembly drives the first movable frame to move relative to the height of the fixed frame. The second movable frame is slidably mounted on the first movable frame. The second transmission assembly is installed at the top and bottom of the first movable frame and is used to drive the second movable frame to move relative to the height of the first movable frame. The placement assembly is fixedly mounted on the second movable frame.
[0007] By adopting the above technical solution, the relative movement of the first and second moving frames in the height direction forms a stroke superposition, which can flexibly adjust the height of the storage components and effectively adapt to the transfer needs of automotive MEB parts of different sizes. This avoids the problem of parts colliding with other components due to fixed height, and reduces surface damage and scrapping of parts. The linkage between the two moving frames is stably achieved through the transmission components, and the drive of the two moving frames only uses a single drive device, reducing the use of power components and significantly improving the efficiency of the transfer process.
[0008] Preferably, the fixed frame is provided with a first slide rail and a second slide rail, the first slide rail and the second slide rail are arranged parallel to each other along the height direction of the fixed frame, and the first movable frame is slidably assembled on the first slide rail and the second slide rail.
[0009] By adopting the above technical solution, the first and second slide rails, which are arranged parallel to each other along the height direction on the fixed frame, provide a stable sliding guide for the first moving frame, ensuring that the first moving frame can maintain a stable posture when moving in the height direction, avoiding tilting or deviation, and thus providing a basic support for the stable operation of the entire feeding device, which helps to ensure the smooth transfer of MEB parts.
[0010] Preferably, the first transmission assembly includes a first rotating shaft, a second rotating shaft, a first driving sprocket, a first driven sprocket, and a first chain. The first rotating shaft is rotatably mounted on the bottom end of the fixed frame. The driving sprocket and the first driving sprocket are sleeved on the first rotating shaft, and the driving sprocket, the first driving sprocket, and the first rotating shaft rotate synchronously. The second rotating shaft is rotatably mounted on the top end of the fixed frame. The first driven sprocket is sleeved on the second rotating shaft, and the first driven sprocket and the second rotating shaft rotate synchronously. The first chain is wound between the first driving sprocket and the first driven sprocket, and the first chain is connected to the first movable frame for driving the first movable frame to move.
[0011] By adopting the above technical solution, the first rotating shaft and the second rotating shaft are respectively installed at the bottom and top of the fixed frame. Together with the first driving sprocket, the first driven sprocket and the first chain to form a transmission structure, the power of the driving sprocket can be stably transmitted to the first moving frame. The synchronous rotation of the first rotating shaft, the second rotating shaft and the first driving sprocket and the first driven sprocket ensures the consistency of the transmission direction, so that the first moving frame can move stably along the height direction of the fixed frame. This provides reliable power support for the smooth operation of the first moving frame, thereby improving the stability of the transmission of the entire feeding device.
[0012] Preferably, the first transmission assembly further includes a first connector, the first chain is wound around the first driving sprocket and the first driven sprocket, and the first chain is connected to both ends of the first connector, and one side of the first connector is fixedly connected to the first movable frame.
[0013] By adopting the above technical solution, the two ends of the first chain are connected to the two ends of the first connector, and the first connector is fixed to the first movable frame, ensuring that the power of the first chain can be transmitted to the first movable frame more efficiently and smoothly, and further improving the smoothness of the first movable frame moving along the first slide rail and the second slide rail.
[0014] Preferably, the first movable frame is provided with a third slide rail and a fourth slide rail, which are arranged parallel to each other along the height direction of the first movable frame, and the second movable frame is slidably mounted on the third slide rail and the fourth slide rail.
[0015] By adopting the above technical solution, the third and fourth slide rails, which are parallel to each other along the height direction on the first moving frame, provide precise sliding guidance for the second moving frame, ensuring that the second moving frame can maintain a stable posture when moving relative to the height direction of the first moving frame, and avoiding tilting, deviation or jamming.
[0016] Preferably, the second transmission assembly includes a third rotating shaft, a fourth rotating shaft, a third sprocket, a fourth sprocket, a second chain, and a third chain. The third rotating shaft is rotatably mounted on the bottom end of the first movable frame, and the third sprocket is sleeved on the third rotating shaft, rotating synchronously with the third rotating shaft. The fourth rotating shaft is rotatably mounted on the top end of the first movable frame, and the fourth sprocket is sleeved on the fourth rotating shaft, rotating synchronously with the fourth rotating shaft. One end of the second chain is fixed to the fixed frame, and the end of the second chain away from the fixed frame is wound around the third sprocket and fixedly connected to the second movable frame. One end of the third chain is fixed to the fixed frame, and the end of the third chain away from the fixed frame is wound around the fourth sprocket and fixedly connected to the second movable frame.
[0017] By adopting the above technical solution, in the second transmission assembly, the third and fourth rotating shafts are respectively installed at the bottom and top of the first moving frame. Together with the third and fourth sprockets and the second and third chains, a transmission structure is formed. One end of the second and third chains is fixed to the fixed frame. When the first moving frame moves, the second moving frame can be driven to move synchronously through the traction of the second and third chains, providing reliable power support for the superposition of the strokes of the two moving frames.
[0018] Preferably, the second transmission assembly further includes a second connector, which is fixedly mounted on the second movable frame, and the ends of the second chain and the third chain away from the fixed frame are connected to the second connector.
[0019] By adopting the above technical solution, the second connector is fixed on the second movable frame and connects the ends of the second and third chains away from the fixed frame. This can concentrate and evenly transmit the tension of the two chains to the second movable frame. Moreover, this concentrated connection method ensures that the tension of the second and third chains is synchronized, so that the second movable frame can maintain a balanced posture when moving relative to the first movable frame, thus providing a guarantee for the realization of double stroke superposition.
[0020] Preferably, the storage assembly includes a fixed bracket and a horizontal tray, the fixed bracket being fixed on the second movable frame, and the horizontal tray being horizontally fixed on the fixed bracket.
[0021] By adopting the above technical solution, the fixed bracket securely connects the horizontal tray to the second movable frame, ensuring the connection strength between the tray and the movable frame. The horizontal setting of the horizontal tray provides a stable bearing surface for MEB parts, making it less likely for parts to tilt or slip when placed, and reducing the risk of collision or damage to parts due to unstable placement during transportation.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The relative movement of the first and second moving frames in the height direction creates a superimposed stroke, which can flexibly adjust the height of the storage components and effectively adapt to the transfer needs of automotive MEB parts of different sizes. This avoids the problem of parts colliding with other components due to fixed height, reducing surface damage and scrapping of parts. The linkage between the two moving frames is stably achieved through the transmission components, and the drive of the two moving frames uses only one drive device, reducing the use of power components and significantly improving the efficiency of the transfer process. 2. The first and second slide rails, which are parallel to each other along the height direction on the fixed frame, provide a stable sliding guide for the first moving frame, ensuring that the first moving frame can maintain a stable posture when moving in the height direction, avoiding tilting or deviation, and thus providing basic support for the stable operation of the entire feeding device, which helps to ensure the smooth transfer of MEB parts. 3. The first and second rotating shafts are respectively installed at the bottom and top of the fixed frame. Together with the first driving sprocket, the first driven sprocket and the first chain, they form a transmission structure that can stably transmit the power of the driving sprocket to the first moving frame. The synchronous rotation of the first and second rotating shafts with the first driving sprocket and the first driven sprocket ensures the consistency of the transmission direction, enabling the first moving frame to move stably along the height of the fixed frame. This provides reliable power support for the smooth operation of the first moving frame and improves the stability of the entire feeding device transmission. Attached Figure Description
[0023] Figure 1 This embodiment of the application is an isometric view illustrating the overall structure of the dual-stroke feeding device; Figure 2 This is a schematic diagram illustrating the structure of the first transmission assembly and the second transmission assembly in this embodiment of the application; Figure 3 This is a schematic diagram illustrating the first slide rail, the second slide rail, the third slide rail, and the fourth slide rail in an embodiment of this application.
[0024] Reference numerals in the attached drawings: 1. Fixed frame; 2. First movable frame; 3. First transmission assembly; 31. First rotating shaft; 32. Second rotating shaft; 33. First driving sprocket; 34. First driven sprocket; 35. First chain; 36. First connector; 4. Drive sprocket; 5. Second movable frame; 6. Second transmission assembly; 61. Third rotating shaft; 62. Fourth rotating shaft; 63. Third sprocket; 64. Fourth sprocket; 65. Second chain; 66. Third chain; 67. Second connector; 7. Storage assembly; 71. Fixed bracket; 72. Horizontal support plate; 8. First slide rail; 9. Second slide rail; 10. Third slide rail; 11. Fourth slide rail. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail.
[0026] This application discloses a dual-stroke feeding device.
[0027] Reference Figure 1 and Figure 2 A dual-stroke feeding device includes a fixed frame 1, a first movable frame 2, a first transmission assembly 3, a drive sprocket 4, a second movable frame 5, a second transmission assembly 6, and a placement assembly 7. The first movable frame 2 is slidably mounted on the fixed frame 1. The first transmission assembly 3 is installed at the top and bottom of the fixed frame 1. The drive sprocket 4 is connected to the first transmission assembly 3 and is used to connect to an external drive device. The first transmission assembly 3 is used to drive the first movable frame 2 to move relative to the height of the fixed frame 1. The second movable frame 5 is slidably mounted on the first movable frame 2. The second transmission assembly 6 is installed at the top and bottom of the first movable frame 2 and is used to drive the second movable frame 5 to move relative to the height of the first movable frame 2. The placement assembly 7 is fixedly mounted on the second movable frame 5.
[0028] When the dual-stroke feeding device is started, the external drive device drives the drive sprocket 4 to rotate. When the drive sprocket 4 rotates, it synchronously drives the first transmission assembly 3 to run, causing the first moving frame 2 to move along the height direction of the fixed frame 1. As the first moving frame 2 moves, the second transmission assembly 6 moves synchronously under the drive of the first moving frame 2, thereby driving the second moving frame 5 to move relative to the height direction of the first moving frame 2. At this time, the placement assembly 7 moves synchronously with the second moving frame 5. The moving height of the placement assembly 7 is the sum of the moving height of the first moving frame 2 and the moving height of the second moving frame 5 relative to the first moving frame 2. This enables dual-stroke adjustment of the dual-stroke feeding device. When transferring MEB parts of different sizes, the movement range of the first moving frame 2 and the second moving frame 5 can be adjusted by controlling the operation of the external drive device, so that the placement component 7 reaches the appropriate height. After the MEB part is placed on the placement component 7, the two moving frames continue to move through the drive device to transfer the MEB part from the initial position to the target position. After the transfer is completed, the external drive device runs in reverse, driving the first moving frame 2 and the second moving frame 5 to move in reverse, so that the placement component 7 returns to the initial height and prepares for the next feeding cycle.
[0029] Reference Figure 3 The fixed frame 1 is provided with a first slide rail 8 and a second slide rail 9. The first slide rail 8 and the second slide rail 9 are arranged parallel to each other along the height direction of the fixed frame 1, and the first slide rail 8 and the second slide rail 9 are fixed to the fixed frame 1 by bolts. The first movable frame 2 is provided with a slide groove that is adapted to the first slide rail 8 and the second slide rail 9. The first movable frame 2 is nested on the first slide rail 8 and the second slide rail 9 through the slide groove, so that the first movable frame 2 slides along the first slide rail 8 and the second slide rail 9.
[0030] Reference Figure 1 and Figure 2 The first transmission assembly 3 includes a first rotating shaft 31, a second rotating shaft 32, a first driving sprocket 33, a first driven sprocket 34, and a first chain 35. The first rotating shaft 31 is rotatably mounted on the bottom end of the fixed frame 1 via bearings. The driving sprocket 4 and the first driving sprocket 33 are sleeved on the first rotating shaft 31. The driving sprocket 4 is connected to an external driving device via the chain, and the driving sprocket 4, the first driving sprocket 33, and the first rotating shaft 31 rotate synchronously. The second rotating shaft 32 is rotatably mounted on the top end of the fixed frame 1 via bearings, and the axis of the second rotating shaft 32 is parallel to the axis of the first rotating shaft 31. The first driven sprocket 34 is sleeved on the second rotating shaft 32, and the first driven sprocket 34 and the second rotating shaft 32 rotate synchronously. The first chain 35 is wound between the first driving sprocket 33 and the first driven sprocket 34, and the first chain 35 is connected to the first movable frame 2 for driving the first movable frame 2 to move.
[0031] Preferably, the dual-stroke feeding device disclosed in this embodiment is provided with two first driving sprockets 33, two first driven sprockets 34 and two first chains 35. The two first driving sprockets 33 are respectively sleeved on both ends of the first rotating shaft 31, the two first driven sprockets 34 are respectively sleeved on both ends of the second rotating shaft 32, and the two first chains 35 are respectively wound around the first driving sprockets 33 and the first driven sprockets 34 on the same side.
[0032] The first transmission assembly 3 further includes a first connecting member 36, which is a metal plate structure. A first chain 35 is wound around the first driving sprocket 33 and the first driven sprocket 34, and the first chain 35 is fixedly connected to both ends of the first connecting member 36. One side of the first connecting member 36 is fixedly connected to the first movable frame 2 by bolts. Preferably, the dual-stroke feeding device disclosed in this embodiment has two first connecting members 36, and the two first connecting members 36 are respectively connected to the first chain 35 on the same side.
[0033] Reference Figure 3 The first movable frame 2 is provided with a third slide rail 10 and a fourth slide rail 11. The third slide rail 10 and the fourth slide rail 11 are arranged parallel to each other along the height direction of the first movable frame 2, and the third slide rail 10 and the fourth slide rail 11 are parallel to the first slide rail 8 and the second slide rail 9. The second movable frame 5 is provided with a slide groove that is adapted to the third slide rail 10 and the fourth slide rail 11. The second movable frame 5 is nested on the third slide rail 10 and the fourth slide rail 11 through the slide groove, so that the second movable frame 5 slides along the third slide rail 10 and the fourth slide rail 11.
[0034] Reference Figure 1 and Figure 2 The second transmission assembly 6 includes a third rotating shaft 61, a fourth rotating shaft 62, a third sprocket 63, a fourth sprocket 64, a second chain 65, and a third chain 66. The third rotating shaft 61 is rotatably mounted on the bottom end of the first movable frame 2 via bearings. The third sprocket 63 is sleeved on the third rotating shaft 61, and the third sprocket 63 rotates synchronously with the third rotating shaft 61. The fourth rotating shaft 62 is rotatably mounted on the top end of the first movable frame 2 via bearings, and the axis of the fourth rotating shaft 62 is parallel to the axis of the third rotating shaft 61. The fourth sprocket 64 is sleeved on the fourth rotating shaft 62, and the fourth sprocket 64 rotates synchronously with the fourth rotating shaft 62. One end of the second chain 65 is fixed to the fixed frame 1, and the end of the second chain 65 away from the fixed frame 1 is wound around the third sprocket 63 and fixedly connected to the second movable frame 5. One end of the third chain 66 is fixed to the fixed frame 1, and the end of the third chain 66 away from the fixed frame 1 is wound around the fourth sprocket 64 and fixedly connected to the second movable frame 5.
[0035] The second transmission assembly 6 also includes a second connector 67, which is a metal plate structure. The second connector 67 is fixedly installed on the second movable frame 5 by bolts. One end of the second chain 65 is fixedly connected to the fixed frame 1, and the end of the second chain 65 away from the fixed frame 1 is wound around the third sprocket 63 and connected to the second connector 67. One end of the third chain 66 is fixedly connected to the fixed frame 1, and the end of the third chain 66 away from the fixed frame 1 is wound around the fourth sprocket 64 and connected to the second connector 67.
[0036] The storage assembly 7 includes a fixed bracket 71 and a horizontal tray 72. The fixed bracket 71 is an L-shaped metal bracket, which is vertically fixed to the second movable frame 5 by bolts. The horizontal tray 72 is horizontally fixed to the horizontal part of the fixed bracket 71.
[0037] The implementation principle of this application embodiment is as follows: When the dual-stroke feeding device starts working, the external drive device drives the drive sprocket 4 to rotate via a chain. The rotation of the drive sprocket 4 synchronously drives the first rotating shaft 31 to rotate, causing the two first driving sprockets 33 mounted on the first rotating shaft 31 to rotate synchronously with the shaft. This, in turn, drives the two first chains 35, which are wound around the first driving sprocket 33 and the first driven sprocket 34 on the same side, to circulate synchronously. Since both ends of the first chains 35 are fixedly connected to both ends of the first connecting member 36, and the first connecting member 36 is fixed to the first movable frame 2 by bolts, the movement of the first chains 35 pulls the first movable frame 2 through the first connecting member 36, causing the first movable frame 2 to move. Simultaneously, the first movable frame 2 is slidably mounted on the first slide rail 8 and the second slide rail 9, allowing the first movable frame 2 to slide smoothly along the height direction of the fixed frame 1.
[0038] As the first movable frame 2 moves, the second transmission assembly 6 mounted on the first movable frame 2 moves synchronously. The third rotating shaft 61 and the fourth rotating shaft 62 in the second transmission assembly 6 move together with the first movable frame 2. Since one end of the second chain 65 is fixed to the fixed frame 1, and the other end of the second chain 65 is wound around the third sprocket 63 and connected to the second movable frame 5 through the second connector 67, and one end of the third chain 66 is also fixed to the fixed frame 1, and the other end of the third chain 66 is wound around the fourth sprocket 64 and connected to the second connector 67, therefore, when the first movable frame 2... When raised, the second chain 65 and the third chain 66 are tightened because the fixed end position remains unchanged. The second moving frame 5 is pulled by the guiding action of the third sprocket 63 and the fourth sprocket 64. The second moving frame 5 slides on the third slide rail 10 and the fourth slide rail 11 of the first moving frame 2 through the slide groove located on the second moving frame 5 itself. That is, it moves synchronously with respect to the first moving frame 2. At this time, the storage component 7 fixed on the second moving frame 5 moves together. The total moving height of the storage component 7 is the sum of the moving height of the first moving frame 2 and the moving height of the second moving frame 5 relative to the first moving frame 2.
[0039] When it is necessary to transfer MEB parts of different sizes, the movement range of the first moving frame 2 and the second moving frame 5 is adjusted by controlling the running speed and time of the external drive device, so that the horizontal tray 72 of the placement component 7 reaches the appropriate height. After the MEB parts are placed on the horizontal tray 72, the first moving frame 2 and the second moving frame 5 are moved by the drive device to smoothly transfer the MEB parts from the initial position to the target position.
[0040] After the transfer is completed, the external drive device runs in reverse, driving the drive sprocket 4, the first rotating shaft 31, and the first drive sprocket 33 to rotate in the opposite direction. This causes the first chain 35 to drive the first moving frame 2 to slide in the opposite direction along the first slide rail 8 and the second slide rail 9. At the same time, the second chain 65 and the third chain 66 of the second transmission assembly 6 pull the second moving frame 5 to slide in the opposite direction along with the first moving frame 2 when the first moving frame 2 moves in the opposite direction. Finally, the placement assembly 7 returns to its initial height and waits for the next feeding cycle.
[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A dual-stroke feeding device, characterized in that, The device includes a fixed frame (1), a first movable frame (2), a first transmission assembly (3), a drive sprocket (4), a second movable frame (5), a second transmission assembly (6), and a storage assembly (7). The first movable frame (2) is slidably mounted on the fixed frame (1). The first transmission assembly (3) is installed at the top and bottom of the fixed frame (1). The drive sprocket (4) is connected to the first transmission assembly (3) and is used to be connected to an external drive device. The first transmission assembly (3) is used to drive the first movable frame (2) to move in the height direction relative to the fixed frame (1). The second movable frame (5) is slidably mounted on the first movable frame (2). The second transmission assembly (6) is installed at the top and bottom of the first movable frame (2) and is used to drive the second movable frame (5) to move in the height direction relative to the first movable frame (2). The storage assembly (7) is fixedly mounted on the second movable frame (5).
2. The dual-stroke feeding device according to claim 1, characterized in that, The fixed frame (1) is provided with a first slide rail (8) and a second slide rail (9). The first slide rail (8) and the second slide rail (9) are arranged parallel to each other along the height direction of the fixed frame (1). The first movable frame (2) is slidably assembled on the first slide rail (8) and the second slide rail (9).
3. The dual-stroke feeding device according to claim 1, characterized in that, The first transmission assembly (3) includes a first rotating shaft (31), a second rotating shaft (32), a first driving sprocket (33), a first driven sprocket (34), and a first chain (35). The first rotating shaft (31) is rotatably mounted on the bottom end of the fixed frame (1). The driving sprocket (4) and the first driving sprocket (33) are sleeved on the first rotating shaft (31), and the driving sprocket (4), the first driving sprocket (33), and the first rotating shaft (31) rotate synchronously. The second rotating shaft (32) is rotatably mounted on the top end of the fixed frame (1). The first driven sprocket (34) is sleeved on the second rotating shaft (32), and the first driven sprocket (34) and the second rotating shaft (32) rotate synchronously. The first chain (35) is wound between the first driving sprocket (33) and the first driven sprocket (34), and the first chain (35) is connected to the first moving frame (2) to drive the first moving frame (2) to move.
4. The dual-stroke feeding device according to claim 3, characterized in that, The first transmission assembly (3) further includes a first connector (36), the first chain (35) is wound around the first driving sprocket (33) and the first driven sprocket (34), and the first chain (35) is connected to both ends of the first connector (36), and one side of the first connector (36) is fixedly connected to the first movable frame (2).
5. The dual-stroke feeding device according to claim 1, characterized in that, The first movable frame (2) is provided with a third slide rail (10) and a fourth slide rail (11). The third slide rail (10) and the fourth slide rail (11) are arranged parallel to each other along the height direction of the first movable frame (2). The second movable frame (5) is slidably assembled on the third slide rail (10) and the fourth slide rail (11).
6. The dual-stroke feeding device according to claim 1, characterized in that, The second transmission assembly (6) includes a third rotating shaft (61), a fourth rotating shaft (62), a third sprocket (63), a fourth sprocket (64), a second chain (65), and a third chain (66). The third rotating shaft (61) is rotatably mounted on the bottom end of the first movable frame (2), and the third sprocket (63) is sleeved on the third rotating shaft (61), and the third sprocket (63) rotates synchronously with the third rotating shaft (61). The fourth rotating shaft (62) is rotatably mounted on the top end of the first movable frame (2), and the fourth sprocket (64) is sleeved on the fourth rotating shaft (65). The fourth sprocket (64) rotates synchronously with the fourth shaft (62); one end of the second chain (65) is fixed to the fixed frame (1), the end of the second chain (65) away from the fixed frame (1) is wound around the third sprocket (63) and fixedly connected to the second movable frame (5); one end of the third chain (66) is fixed to the fixed frame (1), the end of the third chain (66) away from the fixed frame (1) is wound around the fourth sprocket (64) and fixedly connected to the second movable frame (5).
7. The dual-stroke feeding device according to claim 6, characterized in that, The second transmission assembly (6) further includes a second connector (67), which is fixedly mounted on the second movable frame (5). The ends of the second chain (65) and the third chain (66) away from the fixed frame (1) are connected to the second connector (67).
8. The dual-stroke feeding device according to claim 1, characterized in that, The storage assembly (7) includes a fixed bracket (71) and a horizontal tray (72). The fixed bracket (71) is fixed on the second movable frame (5), and the horizontal tray (72) is horizontally fixed on the fixed bracket (71).