Shielding cover feeding mechanism of shielding cover assembling equipment

Abstract

The utility model relates to the field of electronic product production equipment, and discloses a shielding cover feeding mechanism of shielding cover assembling equipment. Comprising an equipment rack, a plurality of material trays located in the equipment rack and used for loading shielding covers, a full tray stock bin used for automatically providing the material trays storing the shielding covers, a material tray transferring mechanism used for transferring the material trays and an empty tray stock bin used for automatically receiving and storing empty material trays, wherein the full tray stock bin, the material tray transferring mechanism and the empty tray stock bin are sequentially arranged; a first tray transplanting module for transferring trays in the full tray stock bin to the tray transferring mechanism is arranged on one side of the full tray stock bin, and a second tray transplanting module for transferring empty trays in the tray transferring mechanism to the empty tray stock bin is arranged on one side of the empty tray stock bin. And the automatic feeding device is stable in operation and high in efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electronic product manufacturing equipment, and in particular to a shielding cover feeding mechanism for a shielding cover assembly equipment. Background Technology

[0002] In the production of electronic products, due to the requirement for signal stability, shielding covers are often installed at corresponding locations on circuit boards. Currently, the installation of circuit board shielding covers is largely done manually. Workers manually take the shielding covers from the stacked storage trays, affix the appropriate labels to the covers, install the covers onto the circuit boards, and then transfer the circuit boards to the next process stage. This manual operation of loading, labeling, and installing shielding covers is prone to inconsistencies in accuracy between different operators. Prolonged periods of labeling and installation can also affect the stability of the shielding covers, and the process is slow and inefficient, requiring skilled operators. Utility Model Content

[0003] This utility model provides a shield cover feeding mechanism for a shield cover assembly equipment, which solves the problems of slow operation speed, low efficiency and poor stability when manually installing shield covers.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a shielding cover loading mechanism for a shielding cover assembly equipment, including a machine frame and multiple trays for loading shielding covers located within the machine frame, and sequentially arranged a full tray hopper for automatically providing trays containing shielding covers, a tray transfer mechanism for transferring trays, and an empty tray hopper for automatically receiving empty trays. A first tray transfer module is provided on one side of the full tray hopper to transfer trays from the full tray hopper to the tray transfer mechanism, and a second tray transfer module is provided on one side of the empty tray hopper to transfer trays empty from the tray transfer mechanism to the empty tray hopper. This automated process completes the loading of shielding covers, with stable operation and high efficiency.

[0005] Furthermore, the first tray transfer module includes a first horizontal drive mechanism located on one side of the full tray hopper and the tray transfer mechanism. The first horizontal drive mechanism is equipped with a first vertical drive mechanism that drives horizontal movement on one side of the full tray hopper and the tray transfer mechanism. The first vertical drive mechanism is equipped with a first transfer plate that drives vertical movement. The first transfer plate is equipped with multiple vacuum adsorption mechanisms, each connected to a vacuum generator mechanism. This automates the tray loading operation, ensuring stable operation and high efficiency.

[0006] Furthermore, the second tray transfer module includes a second horizontal drive mechanism located on one side of the tray transfer mechanism and the empty tray hopper. The second horizontal drive mechanism is equipped with a second vertical drive mechanism that drives horizontal movement on one side of the tray transfer mechanism and the empty tray hopper. The second vertical drive mechanism is equipped with a second transfer plate that drives vertical movement, and the second transfer plate is equipped with multiple push rods. This automates the tray unloading operation, ensuring stable operation and high efficiency.

[0007] Furthermore, the material tray transfer mechanism includes a first support assembly and a second support assembly, on which horizontally parallel first and second transport supports are respectively mounted. On opposite sides of the first and second transport supports, a first belt conveyor mechanism for conveying the material tray is arranged. Between the two parallel first belt conveyors, a first lifting and positioning mechanism for lifting and positioning the material tray being conveyed is provided. Between the two parallel first belt conveyors, a first blocking cylinder mechanism for blocking and positioning the material tray being conveyed is provided. This automated process completes the transfer of the material tray and coordinates with the labeling and picking actions on the shielding cover, resulting in high efficiency and stable operation.

[0008] Furthermore, the first support assembly is provided with a fixing structure for horizontally fixing the first transport support. The second support assembly is horizontally parallel to the first support assembly, and multiple first adjusting screw structures and multiple first limiting slide rod structures are arranged side-by-side. Each first adjusting screw structure is provided with a first adjusting plate that can be adjusted to move relative to the first support assembly. The first adjusting plate is limited by the first limiting slide rod structure and slides horizontally relative to the first support assembly. The second transport support is fixed to the multiple first adjusting plates. This design can adapt to different sized trays, has a wide range of applications, and strong applicability.

[0009] Furthermore, each of the multiple first adjusting screw structures is equipped with a first linkage gear, and a first linkage chain is provided between the multiple first linkage gears. This first adjusting screw structure provides more stable and convenient adjustment of the distance between the first and second transport supports.

[0010] Furthermore, both the full and empty tray hoppers include a slide rail assembly, a sliding plate, a support frame assembly, a fixed plate, a limit plate assembly, a lifting plate assembly, and a lifting drive assembly. The slide rail assembly is located inside the equipment frame. The sliding plate is slidably mounted on the slide rail assembly. The support frame assembly is vertically mounted on the sliding plate. The fixed plate is horizontally mounted on the upper end of the support frame assembly. The limit plate assembly is vertically mounted between the sliding plate and the fixed plate. The lifting plate assembly is mounted on the limit plate assembly and is limited by the limit plate assembly to move only in the vertical direction. The lifting drive assembly is located between the sliding plate and the fixed plate. A fixed plate is used to drive the lifting plate assembly to move vertically. A first window corresponding to the sliding plate is provided on the fixed plate, through which the feeding tray moves vertically. A first limiting block assembly for limiting the feeding tray is provided around the first window on the upper surface of the fixed plate. A fixed base plate is provided above the fixed plate inside the equipment frame, and the feeding tray transfer mechanism is fixed to the fixed base plate. A second window corresponding to the first window is provided on the fixed base plate, through which the feeding tray moves vertically. A second limiting block assembly for limiting and guiding the feeding tray is provided around the second window on the fixed base plate. This achieves automated loading and unloading of the feeding tray during equipment operation, and the structure is stable. Attached Figure Description

[0011] Figure 1 This is a front view schematic diagram of the present invention after part of the cover has been removed;

[0012] Figure 2 This is a front view schematic diagram of the first material tray transfer module;

[0013] Figure 3 This is a front view schematic diagram of the second material tray transfer module.

[0014] Figure 4 This is a front view schematic diagram of the material tray transfer mechanism.

[0015] Figure 5 A front view of the material transfer mechanism after removing the material tray;

[0016] Figure 6 This is a front view diagram of the full-pan silo section.

[0017] The components in the diagram are labeled as follows: equipment frame 100, fixed base plate 101, shielding cover feeding mechanism 200, material tray 201, full tray hopper 210, slide rail assembly 211, sliding plate 212, support frame assembly 213, fixed plate 214, limit plate assembly 215, lifting plate assembly 216, lifting drive assembly 217, material tray transfer mechanism 220, first support assembly 221, second support assembly 222, first transport support 223, second transport support 224, first belt conveyor mechanism 225, and first lifting and positioning mechanism 226. The system includes a first blocking cylinder mechanism 227, a first adjusting screw structure 228, a first limiting slide rod structure 229, an empty tray hopper 230, a first tray transfer module 240, a first horizontal drive mechanism 241, a first vertical drive mechanism 242, a first transfer plate 243, a vacuum adsorption mechanism 244, a second tray transfer module 250, a second horizontal drive mechanism 251, a second vertical drive mechanism 252, a second transfer plate 253, a push rod 254, a first adjusting plate 260, a first limiting block assembly 270, and a second limiting block assembly 280. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 The shielding cover loading mechanism of the shielding cover assembly equipment shown includes a machine frame 100 and a plurality of trays 201 for loading shielding covers located within the machine frame 100. Sequentially arranged are a full tray hopper 210 for automatically providing trays 201 containing shielding covers, a tray transfer mechanism 220 for transferring trays 201, and an empty tray hopper 230 for automatically receiving and storing empty trays 201. A first tray transfer module 240 is provided on one side of the full tray hopper 210 to transfer trays 201 from the full tray hopper 210 to the tray transfer mechanism 220. A second tray transfer module 250 is provided on one side of the empty tray hopper 230 to transfer trays 201 from the tray transfer mechanism 220 to the empty tray hopper 230. In practice, a large number of trays 201 containing shielding covers are loaded into the full tray hopper 210 at a time. After operation begins, the full tray hopper 210 automatically provides trays 201 with shielding covers. The first tray transfer module 240 transfers the trays 201 from the full tray hopper 210 to the tray transfer mechanism 220. The shielding covers on the trays 201 on the tray transfer mechanism 220 are labeled and transferred away for installation. After all the shielding covers in the trays 201 have been transferred, the second tray transfer module 250 transfers the empty trays 201 to the empty tray hopper 230. When a certain number of empty trays 201 accumulate in the empty tray hopper 230, all the empty trays 201 are removed at once for subsequent automated assembly. The automatic loading of shielding covers is stable and highly efficient.

[0020] Based on the above, such as Figure 1 and Figure 2 As shown, the first tray transfer module 240 includes a first horizontal drive mechanism 241 located on one side of the full tray hopper 210 and the tray transfer mechanism 220. The first horizontal drive mechanism 241 is provided with a first vertical drive mechanism 242 driven by it to move horizontally on one side of the full tray hopper 210 and the tray transfer mechanism 220. The first vertical drive mechanism 242 is provided with a first transfer plate 243 driven by it to move vertically. The first transfer plate 243 is provided with a plurality of vacuum adsorption mechanisms 244, and the vacuum adsorption mechanisms 244 are connected to a vacuum generator mechanism.

[0021] In this specific embodiment, the first horizontal drive mechanism 241 is a linear motor, and the first vertical drive mechanism 242 is a cylinder drive mechanism with a controllable slide rail assembly. In specific implementations, the first horizontal drive mechanism 241 and the first vertical drive mechanism 242 can also be other linear drive mechanisms with controllable stroke, such as a lead screw motor assembly drive mechanism. The first transfer plate 243 is provided with a plurality of longitudinally and transversely arranged waist-shaped holes, and a position-adjustable vacuum adsorption mechanism 244 is provided in the waist-shaped holes. There are sixteen vacuum adsorption mechanisms 244, which correspond to the edge and middle adsorption positions on the upper surface of the material tray 201, respectively. The vacuum adsorption mechanism 244 includes an elastic adsorption rod fixed in the waist-shaped hole and a vacuum suction head fixedly set at the lower end of the elastic adsorption rod. The vacuum generator mechanism is a vacuum generator used in the factory. In specific implementations, the number and arrangement of the vacuum adsorption mechanisms 244 can also be determined according to the actual situation. The vacuum generator mechanism can also be a vacuum valve or other independent vacuum generating mechanism.

[0022] In specific implementation, the first horizontal drive mechanism 241 drives the first transfer plate 243 to the corresponding position above the full tray hopper 210, and the first vertical drive mechanism 242 drives the first transfer plate 243 to move down until it contacts the upper surface of the tray 201 in the full tray hopper 210 with the vacuum adsorption mechanism 244 and adsorbs the tray 201; then, the first vertical drive mechanism 242 drives the vacuum adsorption mechanism 244 on the first transfer plate 243 to move the tray 201 with the shielding cover upward, and the first horizontal drive mechanism 241 drives the vacuum adsorption mechanism 244 on the first transfer plate 243 to move upward. Mechanism 244 moves horizontally to the corresponding position above the tray transfer mechanism 220, carrying the tray 201 with a shield. Then, the first vertical drive mechanism 242 drives the vacuum adsorption mechanism 244 on the first transfer plate 243 to move the tray 201 with the shield down into the tray transfer mechanism 220. After stabilization, the vacuum adsorption mechanism 244 disengages from the tray 201, and the first vertical drive mechanism 242 drives the first transfer plate 243 to move up and reset, thus completing one automated transfer of the tray 201 from the full tray hopper 210 to the tray transfer mechanism 220. The automated loading operation of the tray 201 is stable and highly efficient.

[0023] Based on the above, such as Figure 1 and Figure 3As shown, the second material tray transfer module 250 includes a second horizontal drive mechanism 251 located on one side of the material tray transfer mechanism 220 and the empty material tray hopper 230. The second horizontal drive mechanism 251 is provided with a second vertical drive mechanism 252 driven by it to move horizontally on one side of the material tray transfer mechanism 220 and the empty material tray hopper 230. The second vertical drive mechanism 252 is provided with a second transfer plate 253 driven by it to move vertically. The second transfer plate 253 is provided with a plurality of push rods 254. In this specific embodiment, the second horizontal drive mechanism 251 is a rodless cylinder with controllable stroke, and the second vertical drive mechanism 252 is a slide cylinder. In specific implementations, the second horizontal drive mechanism 251 and the second vertical drive mechanism 252 can also be linear drive mechanisms with controllable stroke, such as linear motors. The second transplanting plate 253 is provided with two parallel push rods 254, which correspond to the acupoints in the material tray 201 after the shielding cover has been removed. In specific implementations, the number and fixed position of the second transplanting plates 253 can also be adjusted according to actual needs and requirements after long-term use. In practical implementation, the second horizontal drive mechanism 251 drives the second transfer plate 253 to a preset position, above the tray 201 on the tray transfer mechanism 220 where the internal shielding cover has been completely removed. The second vertical drive mechanism 252 drives the second transfer plate 253, along with multiple push rods 254, to move down to the preset position. At this time, the lower ends of the multiple push rods 254 are below the upper surface of the tray 201. The horizontal movement of the second transfer plate 253 driven by the second horizontal drive mechanism 251 indirectly causes the multiple push rods 254 to push the tray 201 down into the empty tray hopper 230. The unloading operation of the tray 201 is completed automatically, with stable operation and high efficiency.

[0024] Based on the above, such as Figure 1 , Figure 4 and Figure 5 As shown, the material tray transfer mechanism 220 includes a first support assembly 221 and a second support assembly 222 correspondingly arranged. A first transport support 223 and a second transport support 224 are horizontally arranged on the first support assembly 221 and the second support assembly 222 respectively. A first belt conveyor mechanism 225 for conveying the material tray 201 is arranged on one side of the first transport support 223 and the second transport support 224 respectively. A first lifting and positioning mechanism 226 for lifting and positioning the material tray 201 conveyed on the first belt conveyor mechanism 225 is arranged between the two parallel first belt conveyor mechanisms 225. A first blocking cylinder mechanism 227 for blocking and positioning the material tray 201 conveyed on the first belt conveyor mechanism 225 is arranged between the two parallel first belt conveyor mechanisms 225.

[0025] In this specific embodiment, the first belt conveyor mechanism 225 includes a conveyor belt, a follower wheel for driving the conveyor belt, a drive wheel for supporting the conveyor belt, and a drive motor for driving the drive wheel to rotate; the first lifting and positioning mechanism 226 includes a vertically arranged cylinder and a positioning plate arranged on the upper end of the cylinder for positioning the transfer tray 201. Multiple limiting blocks are arranged along the outer edge of the positioning plate to limit the tray 201. The upper inner side of the multiple limiting blocks is provided with a guide arc surface for guiding the tray 201 for precise docking and positioning; the first blocking cylinder mechanism 227 includes a vertically arranged cylinder and a blocking rod structure driven by the cylinder to move up and down; a laser sensor is arranged between the two corresponding first belt conveyor mechanisms 225 to sense and position the trays 201 conveyed on the two corresponding first belt conveyor mechanisms 225; in specific implementation, when the first tray transfer module 240... After the material tray 201 is transported to the two corresponding first belt conveyor mechanisms 225, the two first belt conveyor mechanisms 225 transport the material tray 201 to the top of the first lifting and positioning mechanism 226. The first lifting and positioning mechanism 226 lifts and positions the material tray 201 on the two first belt conveyor mechanisms 225. At the same time, the first blocking cylinder mechanism 227 blocks the subsequent first material tray transfer module 240 from transporting the material tray 201 to the two corresponding first belt conveyor mechanisms 225. After the labeling and transfer installation of all the shielding covers in the material tray 201 on the first lifting and positioning mechanism 226 are completed, the first lifting and positioning mechanism 226 drives the material tray 201 to move down and place the material tray 201 on the two corresponding first belt conveyor mechanisms 225. Finally, the second material tray transfer module 250 transfers the empty material tray 201 to the empty tray hopper 230. The transfer of the material tray 201 is completed automatically, and the labeling and picking actions on the shielding covers are completed in coordination, resulting in high efficiency and stable operation.

[0026] Based on the above, such as Figure 1 , Figure 4 and Figure 5 As shown, the first support assembly 221 is provided with a fixing structure for horizontally fixing the first transport support 223. The second support assembly 222 is horizontally parallel to the first support assembly 221 and has multiple first adjusting screw structures 228 and multiple first limiting slide rod structures 229. Each first adjusting screw structure 228 has a first adjusting plate 260 that can be adjusted to move relative to the first support assembly 221. The first adjusting plate 260 is limited by the first limiting slide rod structures 229 and slides horizontally relative to the first support assembly 221. The second transport support 224 is fixed to the multiple first adjusting plates 260. In specific implementations, adjusting the first adjusting screw structure 228 adjusts the distance between the first transport support 223 and the second transport support 224, accommodating different sized trays 201, thus having a wide range of applications and strong applicability.

[0027] Based on the above, such as Figure 1 , Figure 4 and Figure 5 As shown, each of the multiple first adjusting screw structures 228 is equipped with a first linkage gear, and a first linkage chain is provided between the multiple first linkage gears. In a specific implementation, adjusting one first adjusting screw structure 228 can cause multiple first adjusting screw structures 228 to be linked and adjusted synchronously, making the adjustment of the distance between the first transport bracket 223 and the second transport bracket 224 by the first adjusting screw structures 228 more stable and convenient.

[0028] Based on the above, such as Figure 1 and Figure 6As shown, both the full pallet hopper 210 and the empty pallet hopper 230 include a slide rail assembly 211, a sliding plate 212, a support frame assembly 213, a fixed plate 214, a limiting plate assembly 215, a lifting plate assembly 216, and a lifting drive assembly 217. The slide rail assembly 211 is disposed inside the equipment frame 100. The sliding plate 212 is slidably disposed on the slide rail assembly 211. The support frame assembly 213 is vertically disposed on the sliding plate 212. The fixed plate 214 is horizontally disposed at the upper end of the support frame assembly 213. The limiting plate assembly 215 is vertically disposed between the sliding plate 212 and the fixed plate 214. The lifting plate assembly 216 is disposed on the limiting plate assembly 215 and is limited by the limiting plate assembly 215 to move only in the vertical direction. The lifting drive assembly 217 is disposed on the limiting plate assembly 215. A lifting plate assembly 216 is positioned between a sliding plate 212 and a fixed plate 214 to drive the lifting plate assembly 216 to move vertically. A first window is provided on the fixed plate 214 at a position corresponding to the sliding plate 212, through which the feeding tray 201 moves vertically. A first limiting block assembly 270 for limiting the feeding tray 201 is provided around the first window on the upper surface of the fixed plate 214. A fixed base plate 101 is provided above the fixed plate 214 in the equipment frame 100. The feeding tray transfer mechanism 220 is fixed on the fixed base plate 101. A second window is provided on the fixed base plate 101 at a position corresponding to the first window, through which the feeding tray 201 moves vertically. A second limiting block assembly 280 for limiting and guiding the feeding tray 201 is provided around the second window on the fixed base plate 101. In this specific embodiment, the slide rail assembly 211 consists of a slide rail fixing plate and two slide rails with sliders fixed side by side on the slide rail fixing plate. In specific implementation, the number of slide rails can also be determined according to the mass and specifications of the materials to be transported. The lifting drive assembly 217 consists of a motor and two lead screw assemblies driven by the motor. In specific implementation, the lifting drive assembly 217 can also be a cylinder with controllable stroke or a linear motor. The limiting plate assembly 215 consists of multiple slide rods and corresponding sliding sleeves fitted on the slide rods. The lifting plate assembly 216 is horizontally fixed on the multiple sliding sleeves. The first limiting block assembly 270 includes multiple limiting plates located around the first window. The second limiting block assembly 280 includes multiple limiting plates located around the second window and a guide slide plate. In practical implementation, the sliding plate 212 can be pulled to the loading and unloading position of the equipment to place or remove a large number of material trays 201 from the limiting plate assembly 215. The sliding plate 212 is pushed to move to the corresponding position on the slide rail assembly 211. The lifting drive assembly 217 can then drive the lifting plate assembly 216 to move up and down accordingly to cooperate with the unloading or loading of the material trays 201, thereby achieving automated loading and unloading of the material trays 201 during equipment operation. The structure is stable.

[0029] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shielding cover feeding mechanism of a shielding cover assembly apparatus, characterized by: The device rack (100) and a plurality of tray (201) for loading shielding cover located in the device rack (100) and sequentially arranged respectively for automatically providing full tray warehouse (210) storing tray (201) with shielding cover, tray transfer mechanism (220) for transferring tray (201), empty tray warehouse (230) for automatically receiving empty tray (201).

2. The shielding cover feeding mechanism of the shielding cover assembling device according to claim 1, wherein: The first tray transplanting module (240) includes a first horizontal drive mechanism (241) located on one side of the full tray warehouse (210) and the tray transfer mechanism (220), a first vertical drive mechanism (242) driven by the first horizontal drive mechanism (241) to move horizontally on one side of the full tray warehouse (210) and the tray transfer mechanism (220), a first transplanting plate (243) driven by the first vertical drive mechanism (242) to move vertically, and a plurality of vacuum suction mechanisms (244) connected with a vacuum generator mechanism.

3. The shielding cover feeding mechanism of the shielding cover assembling device according to claim 1, wherein: The second tray transplanting module (250) includes a second horizontal drive mechanism (251) located on one side of the tray transfer mechanism (220) and the empty tray warehouse (230), a second vertical drive mechanism (252) driven by the second horizontal drive mechanism (251) to move horizontally on one side of the tray transfer mechanism (220) and the empty tray warehouse (230), a second transplanting plate (253) driven by the second vertical drive mechanism (252) to move vertically, and a plurality of push rods (254) arranged on the second transplanting plate (253).

4. The shielding cover feeding mechanism of the shielding cover assembling device according to claim 1, wherein: The tray transfer mechanism (220) includes a first support assembly (221) and a second support assembly (222) arranged correspondingly, a first carrying support (223) and a second carrying support (224) arranged horizontally and side by side on the first support assembly (221) and the second support assembly (222), a first belt conveying mechanism (225) arranged correspondingly on one side of the first carrying support (223) and the second carrying support (224) for conveying the tray (201), a first lifting positioning mechanism (226) arranged between the two first belt conveying mechanisms (225) for lifting and positioning the tray (201) conveyed on the first belt conveying mechanism (225), and a first blocking cylinder mechanism (227) arranged between the two first belt conveying mechanisms (225) for blocking and positioning the tray (201) conveyed on the first belt conveying mechanism (225).

5. The shielding cover feeding mechanism of the shielding cover assembling device according to claim 4, characterized in that: The first support assembly (221) is provided with a fixing structure for fixing the first carrying support (223) horizontally, a plurality of first adjusting screw rod structures (228) and a plurality of first limiting slide rod structures (229) are horizontally and parallel arranged between the first support assembly (221) and the second support assembly (222), the first adjusting screw rod structure (228) is provided with a first adjusting plate (260) which can be adjusted to move relative to the first support assembly (221), the first adjusting plate (260) is limited to slide horizontally relative to the first support assembly (221) by the first limiting slide rod structure (229), and the second carrying support (224) is fixed on the plurality of first adjusting plates (260).

6. The shielding cover feeding mechanism of the shielding cover assembling device according to claim 5, characterized in that: The plurality of first adjusting screw rod structures (228) are provided with linkage gears, and the linkage gears are provided with a linkage chain.

7. The shielding cover feeding mechanism of the shielding cover assembling device according to claim 1, characterized in that: The full tray warehouse (210) and the empty tray warehouse (230) both include a sliding rail assembly (211), a sliding plate (212), a support frame assembly (213), a fixed plate (214), a limiting plate assembly (215), a lifting plate assembly (216) and a lifting drive assembly (217), the sliding rail assembly (211) is arranged inside the equipment rack (100), the sliding plate (212) is slidingly arranged on the sliding rail assembly (211), the support frame assembly (213) is vertically arranged on the sliding plate (212), the fixed plate (214) is horizontally arranged at the upper end of the support frame assembly (213), the limiting plate assembly (215) is vertically arranged between the sliding plate (212) and the fixed plate (214), the lifting plate assembly (216) is arranged on the limiting plate assembly (215) and can only move in the vertical direction by the limiting plate assembly (215), the lifting drive assembly (217) is arranged between the sliding plate (212) and the fixed plate (214) for driving the lifting plate assembly (216) to move in the vertical direction, the fixed plate (214) is provided with a first window corresponding to the position of the sliding plate (212) for the vertical lifting movement of the feeding tray (201), the periphery of the first window on the upper surface of the fixed plate (214) is provided with a first limiting block assembly (270) for limiting the feeding tray (201), the upper side of the fixed plate (214) in the equipment rack (100) is provided with a fixed base plate (101), the tray transfer mechanism (220) is fixed on the fixed base plate (101), the fixed base plate (101) is provided with a second window corresponding to the position of the first window for the vertical lifting movement of the feeding tray (201), and the periphery of the second window on the fixed base plate (101) is provided with a second limiting block assembly (280) for limiting the feeding tray (201).

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