Product thickness detection automatic sorting equipment

Abstract

The utility model provides a kind of product thickness detection automatic sorting equipment, including machine table, feeding flow conveying mechanism, positioning detection mechanism, discharging flow conveying mechanism, feeding flow conveying mechanism is sent to feeding station with the tray full of product to be detected and product is transferred to positioning detection mechanism and is detected, the product of detection completion will be received by the different product classification passageway of discharging flow conveying mechanism according to detection result, realizes classified discharging, buffer, and the equipment layout is compact, degree of automation is high, reliable in operation and can realize continuous feeding, detection, classified discharging operation.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment, and in particular to an automatic sorting device for product thickness detection. Background Technology

[0002] As smartphones evolve towards high-end forms such as full-screen, curved screen, and foldable screen, the demand for mobile phone cover glass and glass lenses is increasing, and the requirements for their processing precision and quality have reached extremely stringent levels. Glass thickness and its uniformity are not only key parameters affecting product strength and assembly, but also directly related to touch sensitivity, display effect, and the end-user experience.

[0003] Currently, thickness detection and sorting in the mobile phone glass production process still have several limitations. For example, mobile phone glass is thin (usually 0.3mm to 0.7mm) and has extremely high tolerance requirements (often needing to be controlled within ±0.01mm or even smaller). Traditional manual sampling or semi-automatic inspection equipment is inefficient and cannot meet the full inspection requirements of large-scale production. Moreover, manual operation is prone to secondary damage such as scratches and chipping, and introduces subjective errors, creating a contradiction between high precision and high efficiency. Furthermore, glass is fragile and easily scratched, and any contact-based measurement or rough loading and unloading methods may cause product scrap. At the same time, the production environment also has a significant impact on the glass. Cleanliness requirements necessitate minimizing human intervention. Simple "qualified / unqualified" classifications are no longer sufficient for high-end manufacturing. Manufacturers need to classify and grade products more precisely (e.g., Grade A, Grade B, Grade C) to maximize product value, meet diverse customer needs, and achieve refined quality control. Furthermore, existing equipment lacks sufficient automation in logistics processes such as automatic pallet (carrier) feeding, empty pallet recovery, and full pallet buffering. Much manual labor is required for loading, unloading, sorting, and pallet management, leading to high labor costs, potential for mixed or incorrect materials, and difficulties in traceability. Utility Model Content

[0004] In view of the above, this utility model provides an automatic sorting device for product thickness detection, which has a compact layout, high degree of automation, reliable operation, and can realize continuous feeding, detection, and sorting operations.

[0005] The present invention specifically adopts the following technical solution: an automatic sorting device for product thickness detection, including a machine base; The feeding conveyor system includes a full-load stacking module, a single-disc conveying module, a waiting-for-feeding module, a feeding robot, an empty-disc lifting module, and an empty-disc conveying module. The full-load stacking module is used to stack multiple trays filled with products. During feeding, each tray descends to the single-disc conveying module and is conveyed to the waiting-for-feeding module for fixing. Then, the feeding robot removes the products from the trays. After all the products have been removed, the empty-disc lifting module brings the empty trays from below the waiting-for-feeding module into the machine. The empty-disc conveying module then connects the empty trays and automatically sends them out of the equipment. The positioning and testing mechanism includes a secondary positioning mobile platform, a testing mechanism, and a transfer robot. The secondary positioning mobile platform docks with and carries the product to be tested transferred by the loading robot. The testing mechanism is mounted above the secondary positioning mobile platform and includes a driving translation mechanism and multiple measuring heads arranged thereon. The transfer robot is mounted above the secondary positioning mobile platform and is used to transfer the tested product to the next workstation. The material unloading conveyor system has at least two product sorting channels for receiving products with different test results. Each product sorting channel includes a product unloading conveyor line, a product unloading robot, an empty tray stacking bin, a material unloading and receiving lifting mechanism, and a full tray receiving mechanism. The product unloading conveyor line is used to carry and transport the tested products. The product unloading robot picks up the products on the product unloading conveyor line and transfers them to the tray at the material unloading and receiving lifting mechanism. Once the tray is full, it is removed and buffered by the full tray receiving mechanism. The empty tray stacking bin can automatically release individual empty trays.

[0006] As a further improved technical solution, the secondary positioning mobile platform includes a secondary positioning mechanism and a reciprocating linear module. Reciprocating guide rails are provided parallel to each other on both sides of the reciprocating linear module. The secondary positioning mechanism is mounted on the reciprocating linear module and the reciprocating guide rails, and is driven by the reciprocating linear module to reciprocate horizontally below the detection mechanism and the transfer robot. The secondary positioning mechanism includes a mobile carrier plate, side plates, a positioning platform, a first movable limiting mechanism, and a second movable limiting mechanism. The positioning platform is mounted on the mobile carrier plate via the two side plates. The mobile carrier plate is mounted on the reciprocating linear module and the reciprocating guide rails. The positioning platform has multiple positioning stations, and a first fixed limiting block and a second fixed limiting block are respectively provided on the outer periphery of the adjacent two sides of each positioning station.

[0007] As a further improved technical solution, the first movable limiting mechanism includes a first limiting synchronous wheel, a first limiting synchronous belt, a first limiting drive motor, a first movable plate, and a first movable limiting block. Multiple first movable limiting blocks are arranged parallel to each other and at equal intervals on the first movable plate. The first movable plate is connected to the first limiting synchronous belt via a clamping block. The first limiting drive motor drives the first limiting synchronous wheel to rotate, causing the first limiting synchronous belt and the first movable plate on it to move, thereby causing the first movable limiting block to move closer to or away from the first fixed limiting block. The second movable limiting mechanism includes a second limiting synchronous wheel, a second limiting synchronous belt, a second limiting drive motor, a second movable plate, and a second movable limiting block. The second movable plate is located below the positioning platform. Multiple second movable limiting blocks are arranged parallel to each other and at equal intervals on the second movable plate. The second movable limiting block passes through the positioning platform. The second movable plate is connected to the second limiting synchronous belt via a clamping block. The second limiting drive motor drives the second limiting synchronous wheel to rotate, causing the second limiting synchronous belt and the second movable plate on it to move, thereby causing the second movable limiting block to move closer to or away from the second fixed limiting block.

[0008] As a further improved technical solution, the transfer robot includes a transfer X-axis moving module, a transfer Y-axis moving module, a transfer Z-axis moving module, and a transfer product picking component. The transfer X-axis moving module is mounted on both sides of the secondary positioning moving platform via a support frame. The transfer Y-axis moving module is mounted on the transfer X-axis moving module. The transfer Z-axis moving module is mounted on the transfer Y-axis moving module. The product picking component is mounted on the transfer Z-axis moving module via a mounting plate. The mounting plate is provided with multiple transfer cylinders at equal intervals. The transfer product picking component is mounted on each of the transfer cylinders, and they correspond one-to-one.

[0009] As a further improved technical solution, the driving translation mechanism includes a detection bracket and a detection linear module mounted thereon. The multiple measuring heads are mounted on the detection linear module via a connecting plate and are driven by the detection linear module to perform linear movement along the horizontal Y-axis above the secondary positioning moving platform. The multiple measuring heads are evenly spaced on the connecting plate.

[0010] As a further improved technical solution, the full-material stacking module is mounted above the machine platform and includes a hopper base plate, a hopper tray, and a hopper tray driving component. A tray window is opened in the middle of the hopper base plate, and the hopper tray supports the stacked full-material trays above the tray window. The single-tray conveying module is located below the hopper tray and includes a first synchronous conveying mechanism, a U-shaped moving tray, and a lifting mechanism. The lifting mechanism is located below the tray window, rises through the U-shaped moving tray to support the single full-material tray, and descends to bring the full-material tray onto the U-shaped moving tray. The first synchronous conveying mechanism drives the U-shaped moving tray to convey the full-material tray. The waiting-to-load module and the single-tray conveying module are located at... Along the same conveying line, there are supporting side plates and side positioning trays on the supporting side plates, used to receive full trays conveyed by the U-shaped moving trays; the loading robot is mounted above the waiting loading module, used to transfer products in the trays to the secondary positioning moving platform; the empty tray lifting module includes a vertical lifting module and a support rod on the vertical lifting module, the vertical lifting module extends into the machine base, used to drive the support rod to move up and down below the waiting loading module, connecting the trays that have been emptied; the empty tray conveying module is located inside the machine base, including a second synchronous conveying mechanism, extending below the support rod and staggered with the support rod, used to receive trays on the support rod.

[0011] As a further improved technical solution, the hopper pallet driving component includes a first driving cylinder, the fixed end of the first driving cylinder is disposed on the bottom plate of the hopper, the hopper pallet is disposed opposite to the two sides of the tray window, and is connected to the piston end of the first driving cylinder. The hopper pallet is provided with a plurality of protrusion structures on the side of the hopper pallet near the tray window, and the hopper pallet is driven by the first driving cylinder to extend towards the tray window to support the tray.

[0012] As a further improved technical solution, the empty pallet stacking hopper, the material receiving lifting mechanism, and the full pallet receiving mechanism are arranged sequentially in vertical space. The empty pallet stacking hopper is mounted above the machine platform, and the full pallet receiving mechanism is located inside the machine platform. The material receiving lifting mechanism includes a first lifting drive mechanism vertically mounted inside the machine platform and a receiving component mounted on the first lifting drive mechanism. The receiving component rises above the machine platform under the drive of the first lifting drive mechanism to receive the single pallet and then falls back to the operating plane of the machine platform. The full pallet receiving mechanism includes a second lifting drive mechanism located on one side of the first lifting drive mechanism and a material receiving top plate mounted on the second lifting drive mechanism.

[0013] As a further improved technical solution, the empty pallet stacking hopper includes a base plate with a through-type operation window in the middle, an upper support plate, a lifting support plate, and a lower support plate movably disposed on opposite sides of the operation window. The upper support plate is disposed above the base plate by a first translation cylinder, which drives it to move on both sides of the operation window and move towards the bottom of the second-to-last pallet. The lifting support plate is disposed on the base plate by a second translation cylinder, which is also equipped with a lifting cylinder. The lifting support plate has an L-shaped structure, with its long side disposed on the lifting cylinder. The second translation cylinder and the lifting cylinder drive the horizontal movement and vertical lifting of the lifting support plate, respectively. The lower support plate is disposed below the base plate by a third translation cylinder, which drives it to move on both sides of the operation window and move towards the bottom of the lowest pallet.

[0014] As a further improved technical solution, the receiving assembly includes a receiving plate and a movable support plate. The receiving plate has a receiving port. The movable support plate is movably mounted on the receiving plate by a fourth translation cylinder and is located on opposite sides of the receiving port to support the material tray to be received. A guide block is provided in each corner of the receiving port and is mounted on the receiving plate by a guide fixing block. The guide block has a trapezoidal structure, and the hypotenuse of the guide block faces upward and towards the inside of the receiving port.

[0015] This utility model's automatic product thickness detection and sorting equipment integrates a full-load stacking module, a loading robot, an empty tray recycling module, an empty tray stacking hopper, and a full-load receiving mechanism. It achieves complete closed-loop automation from full-load tray loading, product handling, empty tray recycling, automatic empty tray distribution, product sorting and loading, to full-load buffer unloading. This significantly reduces manual intervention, allows for 24-hour continuous operation, and results in a qualitative leap in production efficiency. Through multi-head synchronous scanning measurement and full-process automation, the equipment can perform 100% inspection on each piece of glass at an extremely high rate, completely replacing inefficient and unreliable manual sampling. Furthermore, the system can sort products into four or more classification channels based on multiple preset thickness tolerance ranges. For example, ultra-high-quality glass can be sorted into channel A, slightly out-of-tolerance but still acceptable glass into channel B (for substandard products or specific customers), qualified products into channel C, and defective products into channel D. This maximizes product quality value and provides rich data support for process improvement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the automatic sorting equipment for thickness detection of the product in this application.

[0017] Figure 2 This is a schematic diagram of the positioning and testing mechanism for this application.

[0018] Figure 3 This is a schematic diagram of the secondary positioning mobile platform structure of this application.

[0019] Figure 4 This is a top view of the secondary positioning moving platform.

[0020] Figure 5 This is a schematic diagram of the transfer robot structure in this application.

[0021] Figure 6 This is a schematic diagram of the material feeding conveyor system.

[0022] Figure 7 This is a schematic diagram of a fully stacked module structure.

[0023] Figure 8 This is a schematic diagram of a single-disk transfer module.

[0024] Figure 9 This is a schematic diagram of the loading robot.

[0025] Figure 10 This is a schematic diagram of the material feeding conveyor system.

[0026] Figure 11 This is a schematic diagram of a single product category channel.

[0027] Figure 12 This is a schematic diagram showing the location and structure of the empty pallet stacking hopper, the material receiving lifting mechanism, and the full pallet receiving mechanism.

[0028] Figure 13 for Figure 12 Enlarged view of a portion of point A in the middle.

[0029] Figure 14 This is a schematic diagram of a material unloading robot. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0032] Reference Figure 1 An automatic sorting device for product thickness detection includes a machine base 1, a feeding conveyor 2, a positioning detection mechanism 3, and a discharging conveyor 4. The feeding conveyor 2 transports a tray 100 filled with products to be tested to the feeding station and transfers the products to the positioning detection mechanism 3 for testing. The tested products are received by different product classification channels of the discharging conveyor 4 according to the test results, realizing classified discharging and buffering.

[0033] Specific references Figure 2 The positioning and testing mechanism 3 includes a secondary positioning moving platform 31, a testing mechanism 32, and a transfer robot 33. The secondary positioning moving platform 31 docks and carries the products to be tested transferred by the feeding conveyor mechanism 2. The testing mechanism 32 is mounted above the secondary positioning moving platform 31 and includes a driving translation mechanism and multiple measuring heads 321 arranged on it. The transfer robot 33 is mounted above the secondary positioning moving platform 31 and is used to transfer the tested products to the next workstation. The driving translation mechanism includes a detection bracket 322 and a detection linear module 323 mounted on it. Multiple measuring heads 321 are mounted on the detection linear module 323 via a connecting plate. Driven by the detection linear module 323, the head moves linearly along the horizontal Y-axis above the secondary positioning moving platform 31. The multiple measuring heads 321 are evenly spaced on the connecting plate and move together. In other embodiments, an existing manual fine-tuning platform can also be used on the connecting plate, allowing not only simultaneous movement of multiple measuring heads 321 but also individual maintenance-oriented lifting and fine-tuning. In this embodiment, the measuring head 321 is preferably a spectral confocal thickness probe for multi-point measurement of the product to analyze and determine its thickness. Specifically, the Jingchuang CDS-2001.5 series spectral confocal thickness gauge or other existing thickness probes can be selected. The detection linear module 323 includes, but is not limited to, linear motors, servo motors, lead screws, and other power devices, transmission devices, and control devices capable of horizontal movement based on electromechanical knowledge.

[0034] Furthermore, the secondary positioning moving platform 31 includes a secondary positioning mechanism and a reciprocating linear module 311. Reciprocating guide rails 312 are provided parallel to each other on both sides of the reciprocating linear module 311. The secondary positioning mechanism is located on the reciprocating linear module 311 and the reciprocating guide rails 312. The reciprocating linear module 311 drives the secondary positioning mechanism to reciprocate and translate below the detection mechanism 32 and the transfer robot 33. The reciprocating linear module 311 includes, but is not limited to, linear motors, servo motors and lead screws, and other power devices, transmission devices and control devices that can realize horizontal movement according to various electromechanical knowledge. The secondary positioning mechanism includes a movable carrier plate 313, a side plate 314, a positioning platform 315, a first movable limiting mechanism 316, and a second movable limiting mechanism 317. The positioning platform 315 is mounted on the movable carrier plate 313 via two side plates 314. The movable carrier plate 313 is mounted on the reciprocating linear module 311 and the reciprocating guide rail 312. The positioning platform 315 has multiple positioning stations. A first fixed limiting block 318 and a second fixed limiting block 319 are respectively provided on the outer periphery of the adjacent two sides of each positioning station.

[0035] Reference Figure 3 and Figure 4 The first movable limiting mechanism 316 includes a first limiting synchronous wheel 3161, a first limiting synchronous belt 3162, a first limiting drive motor 3163, a first movable plate 3164, and a first movable limiting block 3165. Multiple first movable limiting blocks 3165 are arranged parallel to each other and at equal intervals on the first movable plate 3164. The first movable plate 3164 is connected to the first limiting synchronous belt 3162 through a clamping block. The first limiting drive motor 3163 drives the first limiting synchronous wheel 3161 to rotate, thereby moving the first limiting synchronous belt 3162 and the first movable plate 3164 on it, so that the first movable limiting block 3165 moves closer to or away from the first fixed limiting block 318. The second movable limiting mechanism 317 includes a second limiting synchronous wheel 3171, a second limiting synchronous belt 3172, a second limiting drive motor 3173, a second movable plate, and a second movable limiting block 3174. The second movable plate is located below the positioning platform 315. Multiple second movable limiting blocks 3174 are arranged parallel to each other and at equal intervals on the second movable plate. The second movable limiting blocks 3174 pass through the positioning platform 315. The second movable plate is connected to the second limiting synchronous belt 3172 through a clamping block. The second limiting drive motor 3173 drives the second limiting synchronous wheel 3171 to rotate, thereby moving the second limiting synchronous belt 3172 and the second movable plate on it, so that the second movable limiting block 3174 moves closer to or away from the second fixed limiting block 319.

[0036] When the feeding conveyor 2 picks up the product and places it on the positioning station of the positioning platform 315, the first fixed limit block 318 and the second fixed limit block 319 perform initial positioning of the product. The first movable limit block 3165 and the second movable limit block 3174 then move further towards the center to perform secondary positioning of the product. A support bar 3151 is also provided in the middle of the positioning to support the middle of the product and prevent product deformation.

[0037] Reference Figure 5 The transfer robot 33 includes a transfer X-axis moving module 331, a transfer Y-axis moving module 332, a transfer Z-axis moving module 333, and a transfer product picking component 334. The transfer X-axis moving module 331 is mounted on both sides of the secondary positioning moving platform 31 via a support frame. The transfer Y-axis moving module 332 is mounted on the transfer X-axis moving module 331 via a crossbeam. The transfer Z-axis moving module 333 is mounted on the transfer Y-axis moving module 332. The transfer product picking component 334 is mounted on the transfer Z-axis moving module 333 via a mounting plate 335. Multiple transfer cylinders 336 are evenly spaced on the mounting plate 335. The transfer product picking component 334 is mounted on the transfer cylinders 336 and corresponds to each other. Each transfer cylinder 336 can independently control the lifting and lowering of the transfer product picking component 334 on it, which can realize the individual picking and placing of products. In this embodiment, the product picking component 334 is preferably an existing vacuum suction cup, which picks up the product by vacuum adsorption. In other embodiments, grippers can also be selected as the product picking component depending on the type of product. The X-axis moving module, the Y-axis moving module 332, and the Z-axis moving module 333 include, but are not limited to, linear motors, servo motors, and lead screws, and other power devices, transmission devices, and control devices that can realize horizontal X-axis, Y-axis, and vertical Z-axis movements, based on various electromechanical common sense.

[0038] Specific references Figure 6 The feeding conveyor mechanism 2 includes a full-load stacking module 21, a single-plate conveying module 22, a waiting-for-feeding module 23, a feeding robot 24, an empty-plate lifting module 25, and an empty-plate conveying module 26. The full-load stacking module 21 is used to stack multiple full-load trays 100. During feeding, each tray 100 descends to the single-plate conveying module 22 and is conveyed by the single-plate conveying module 22 to the waiting-for-feeding module 23 for fixing. Then, the feeding robot 24 removes the products from the trays 100. When all products have been removed, the empty-plate lifting module 25 carries the empty trays 100 from below the waiting-for-feeding module 23 into the machine 1. Then, the empty-plate conveying module 26 connects to the empty trays and automatically sends them out of the equipment.

[0039] Reference Figure 7The full-material stacking module 21 is mounted on the machine base 1 and includes a hopper base plate 211, a hopper support plate 212 and a hopper support plate driving component. A through tray window 214 is opened in the middle of the hopper base plate 211 and baffles 215 are provided around the tray window 214 to guide and block the stacked trays 100. The hopper support plate 212 supports the stacked full trays 100 above the tray window 214. Furthermore, the hopper bottom plate 211 is mounted on top of the single-disc conveyor module 22 via support columns. The hopper pallet driving component includes a first driving cylinder 216, the fixed end of which is located on the hopper bottom plate 211. The hopper pallet 212 is positioned opposite each other on both sides of the pallet window 214 and connected to the piston end of the first driving cylinder 216. Multiple protrusion structures 217 are provided on the side of the hopper pallet 212 closest to the pallet window 214. The number of protrusion structures 217 can be 1-3, depending on the shape and size of the pallet; in this embodiment, 3 are evenly spaced. The hopper pallet 212 is driven by the first driving cylinder 216 to extend towards the pallet window 214 to support the pallet 100. When the pallet 100 is released, the first driving cylinder 216 then retracts the hopper pallet 212.

[0040] Reference Figure 8The single-disc conveying module 22 is located below the hopper pallet 212 and includes a first synchronous conveying mechanism, a U-shaped moving pallet 221, and a lifting mechanism. The lifting mechanism is located below the pallet window 214. It rises through the U-shaped moving pallet 221 to support the full pallet 100 and descends to bring the full pallet 100 onto the U-shaped moving pallet 221. The first synchronous conveying mechanism drives the U-shaped moving pallet 221 to convey the full pallet 100. Furthermore, the first synchronous transmission mechanism includes a first motor 222, a first drive shaft 223, a first drive synchronous pulley, a first driven synchronous pulley, and a first synchronous belt 224. The first drive shaft 223 is located at the output end of the first motor 222. The first drive synchronous pulley is located on the first drive shaft 223. The first driven synchronous pulley is mounted on the machine base 1 and is located on the same straight line as the first drive synchronous pulley. The first synchronous belt 224 is sleeved on the first drive synchronous pulley and the first driven synchronous pulley. The bottom of the U-shaped moving pallet 221 is mounted on the first synchronous belt 224 via a downwardly extending clamping block. The bottom of the U-shaped moving pallet 221 is also provided with two guide support plates 225. The top of the guide support plates 225 is provided with a guide rail. The bottom of the U-shaped moving pallet 221 is connected to the guide rail at the top of the guide support plates 225 via a slider. When the first synchronous belt 224 drives the U-shaped moving pallet 221 to move back and forth in a straight line, it plays a supporting, guiding, and stabilizing role. The first motor 222 drives the first drive shaft 223 to rotate, thereby driving the first synchronous belt 224 to transmit the U-shaped moving pallet 221 on it. In the attached figure of this embodiment, the first motor 222 is located in the middle of the first drive shaft 223 and is connected to the first drive shaft 223 through a reversing reducer with two output ends. In other embodiments, the first motor 222 may also be located at one end of the first drive shaft 223.

[0041] In addition, the lifting mechanism includes a feeding top plate 226, a second motor 227, and a first lead screw. The second motor 227 is mounted inside the machine base 1 via a connecting frame. The first lead screw is located at the output end of the second motor 227. The feeding top plate 226 is mounted on the matching nut of the first lead screw. The second motor 227 drives the feeding top plate 226 to rise and fall. Guide shafts 228 can also be provided at the four corners of the bottom of the feeding top plate. The guide shafts 228 are movably mounted on the machine base 1 via linear bearings and play a guiding role when the feeding top plate 226 rises and falls. When loading materials, the second motor 227 drives the first lead screw to rotate, raising the top plate upwards. It passes through the middle window of the U-shaped moving pallet 221 and rises to the bottom tray 100 position in the tray window. The hopper pallet 212 moves outwards under the drive of the first drive cylinder 216, causing the protrusion structure on the hopper pallet 212 to move away from the bottom tray 100, releasing its restriction. The top plate descends with one tray 100. During the descent, the first drive cylinder 216 drives the hopper pallet 212 to move towards the center, causing the protrusion structure on the hopper pallet 212 to insert into the bottom of the second-to-last tray 100, supporting the remaining trays 100 except the bottom one. The loading top plate 226 descends to the U-shaped moving pallet 221 and continues to descend, leaving the trays 100 on the U-shaped moving pallet 221 so that the U-shaped moving pallet 221 can push the trays 100 filled with products into the waiting loading module 23 to wait for loading.

[0042] See Figure 6 The loading module 23 and the single-disc conveying module 22 are located on the same conveying line. The loading module includes a supporting side plate 231 and a side positioning plate 232 on the supporting side plate 231. This side positioning plate 232 receives a full tray 100 conveyed by the U-shaped moving pallet 221. The full tray 100 is conveyed between the supporting side plates 231 by the U-shaped moving pallet 221 and is supported and fixed by the side positioning plate 232, awaiting material removal. Furthermore, the side positioning plate 232 is driven by a second drive cylinder to move horizontally on the supporting side plate 231. An L-shaped positioning baffle is provided at the end of the supporting side plate 231 near the empty tray lifting module 25. Similar to the hopper pallet 212, the inner side of the side positioning pallet 232 is also provided with multiple protrusion structures. The side positioning pallet 232 is driven by the second drive cylinder, causing one side of the protrusion structure to extend towards the center to support the conveyed tray 100. When the tray 100 is released, the second drive cylinder drives the side positioning pallet 232 to retract, and the empty tray lifting module takes over the tray 100 and brings it into the machine base 1, ready to be conveyed to the empty tray conveying module 26. Preferably, the second drive cylinder is mounted on the top of the supporting side plate 231 via a fixed plate, and guide rails are also provided on both sides of the second drive cylinder. The side positioning pallet 232 is slidably mounted on the guide rails via guide sliders. The second drive cylinder drives the side positioning pallet 232 to move along the guide rails on the fixed plate, that is, to translate on the supporting side plate 231.

[0043] The empty tray lifting module 25 includes a vertical lifting module and a support rod 251 on the vertical lifting module. The vertical lifting module is located at one end of the support side plate 231 of the waiting loading module 23 and extends into the machine base 1. It is used to drive the support rod 251 to move up and down below the waiting loading module 23 to connect the tray 100 that has been emptied. The vertical lifting module includes a back plate 252, a second lead screw 253, a third motor, and guide rails parallel to both sides of the second lead screw 253. The second lead screw 253 and the guide rails are located on the same side of the back plate 252, and the third motor is located on the other side of the back plate 252. The support rod 251 is mounted on the matching nut of the second lead screw 253 via a connecting plate. The bottom ends of the connecting plate are equipped with sliders that slide in conjunction with the two guide rails. The third motor is connected to one end of the second lead screw 253 via a coupling, synchronous pulley, synchronous belt, or other common mechanical connection structure, and drives it to rotate. The nut on the motor then moves the connecting plate and the support rod 251 up and down along the guide rails.

[0044] The empty tray conveying module 26 is located inside the machine base 1 and includes a second synchronous conveying mechanism and a belt pad 261. The second synchronous conveying mechanism extends below the support rod 251 and is staggered with the support rod 251 to receive the tray 100 on the support rod 251. The second synchronous conveying mechanism includes a fourth motor 262, a second drive shaft 263, a second drive synchronous pulley 264, a second driven synchronous pulley 265, and a second synchronous belt 266. The second drive shaft 263 is located at the output end of the second motor 227. The second drive synchronous pulley 264 is located on the second drive shaft 263. The second driven synchronous pulley 265 is mounted inside the machine base 1 and is located in the same straight line as the second drive synchronous pulley 264. The second synchronous belt 266 is fitted onto the second drive synchronous pulley 264 and the second driven synchronous pulley 265. The belt pad 261 is mounted inside the machine base 1 and is inserted into the second synchronous belt 266 to prevent the second synchronous belt 266 from sagging and deforming when conveying the tray 100. During the feeding process, the support rod 251 and the second synchronous belt 266 intersect without interfering with each other. The support rod 251 will lower the empty material tray 100 onto the second synchronous belt 266. The support rod 251 will continue to descend and detach from the material tray 100. The empty tray will then be conveyed to the discharge port by the second synchronous belt 266. Once conveyed to the discharge port, it can slide directly into the pre-prepared collection box.

[0045] Reference Figure 9The loading robot 24 is mounted above the waiting loading module 23 and is used to transfer products from the tray 100 to the secondary positioning moving platform 31. In this embodiment, the loading robot 24 includes a loading X-axis moving module 241, a loading Y-axis variable pitch sliding linear module 242, a loading Z-axis moving module 243, and a loading product picking component 244. The loading product picking component 244 uses a vacuum suction cup to pick up products by vacuum adsorption. The loading X-axis moving module 241 is mounted above the waiting loading module 23 and the empty tray lifting module 25 via a support frame. On the side parallel to the loading X-axis moving module 241, a loading X-axis guide rail 245 is also mounted via a support frame. The loading Z-axis moving module 243 is mounted across the loading X-axis moving module 241 and the loading X-axis guide rail 245 via a crossbeam. Driven by the loading X-axis moving module 241, it moves horizontally along the loading X-axis guide rail 245. The loading Y-axis variable pitch slide linear module 242 is mounted on the loading Z-axis moving module 243. The loading product picking component 244 is mounted on the loading Y-axis variable pitch slide linear module 242. The loading product picking component 244 is used to pick up products from the tray 100 and is driven by the loading X-axis moving module 241 and the loading Z-axis moving module 243 to perform horizontal and vertical lifting movements. The loading X-axis moving module 241 and loading Z-axis moving module 243 include, but are not limited to, power devices, transmission devices and control devices that can realize horizontal X-axis movement and vertical Z-axis movement, such as linear motors, servo motors and lead screws, as well as other electromechanical devices. The loading Y-axis variable pitch slide linear module 242 can adopt the existing variable pitch slide module from West Germany.

[0046] Reference Figure 10-11 The feeding conveyor mechanism 4 has at least two product sorting channels 4A for receiving products with different test results. For example, one channel is used to collect unqualified products, while the others are used to further sort and collect qualified products. In this embodiment, four product sorting channels are set up, one for unqualified products and three for qualified products. Specifically, each product sorting channel 4A includes a feeding product conveyor line 41, a feeding robot 42, a feeding empty tray stacking bin 43, a feeding receiving lifting mechanism 44, and a full tray receiving mechanism 45. The feeding product conveyor line 41 is used to carry and transport the tested products. The feeding robot 42 is used to pick up the products on the feeding product conveyor line 41 and transfer them to the tray 100 at the feeding receiving lifting mechanism 44. When the tray 100 is full, it is removed and buffered by the full tray receiving mechanism 45. The empty tray stacking bin can automatically release a single empty tray 100.

[0047] Further reference Figure 12The empty tray stacking bin 43, the material receiving lifting mechanism 44, and the full tray receiving mechanism 45 are arranged sequentially in vertical space. The empty tray stacking bin 43 is mounted above the machine base 1, and the full tray receiving mechanism 45 is located inside the machine base 1. The material receiving lifting mechanism 44 includes a first lifting drive mechanism vertically mounted inside the machine base 1 and a receiving component mounted on the first lifting drive mechanism. The receiving component rises above the machine base 1 under the drive of the first lifting drive mechanism to receive a single tray 100 and then falls back to the operating plane of the machine base 1. The full tray receiving mechanism 45 includes a second lifting drive mechanism located on one side of the first lifting drive mechanism and a material receiving top plate 451 mounted on the second lifting drive mechanism. The second lifting drive mechanism drives the material receiving top plate to rise and receive a tray 100 loaded with product material on the receiving component and then falls back to avoid it. It can cyclically receive multiple trays 100.

[0048] Among them, the combination Figure 13 The empty pallet stacking bin 43 includes a base plate 431 with a through-type operating window in the middle, an upper support plate 432 movably disposed on opposite sides of the operating window, a lifting support plate 433, and a lower support plate 434. The base plate 431 is supported on the machine base 1 by pillars, and corner baffles 435 are provided at the four corners of the operating window of the base plate to facilitate guiding and stabilizing the stacked pallets 100. The upper support plate 432 is disposed above the base plate 431 by a first translation cylinder 436, which drives it to move on both sides of the operating window, moving towards the operating window and inserting into the bottom of the second to last pallet 100, thus lifting up all empty pallets 100 except the bottom one. The lifting pallet 433 is mounted on the base plate 431 via the second translation cylinder 437. The second translation cylinder 437 is also equipped with a lifting cylinder 438. The lifting pallet 433 has an L-shaped structure, with its long side located on the piston end of the lifting cylinder 438. The second translation cylinder 437 and the lifting cylinder 438 drive the horizontal movement and vertical lifting of the lifting pallet 433, respectively. The lower support plate 434 is movably mounted below the base plate 431 via the third translation cylinder 439, and is driven by it to move on both sides of the operating window, moving towards the bottom of the lowest material tray 100. Preferably, when the lifting cylinder 438 raises the lifting plate 433 to its highest limit, the horizontal short side of the lifting plate 433 is at the same height as the upper plate 432. At this time, it functions the same as the upper plate 432. Driven by the second translation cylinder 437, it moves inward and inserts into the bottom of the second-to-last tray 100. Together with the upper plate 432, it holds up all the empty trays 100 except the bottom one. After the bottom tray 100 is lowered and taken away, the upper plate 432 retracts, the lower support plate 434 extends, and the lifting cylinder 438 drives the lifting plate 433 to smoothly land on the lower support plate 434 with the upper tray 100. Then, the second translation cylinder 437 drives it to retract and detach from the tray 100, and the lifting cylinder 438 drives it to rise and reset, waiting for the next operation.

[0049] When the operator places an empty pallet 100 into the empty pallet stacking bin 43, the lower support plate 434 extends to support all the pallets 100 above. When unloading begins, the unloading and receiving lifting mechanism 44 rises to connect with a single pallet 100. The upper support plate 432 and the lifting support plate 433 extend and hold the bottom of the second to last pallet. The lower support plate 434 retracts, and the bottom pallet 100 falls onto the unloading and receiving lifting mechanism 44 and descends with it, leaving the movement area of ​​the lower support plate 434. The lower support plate 434 then extends again, the upper support plate 432 retracts, and the lifting support plate 433, carrying all the pallets 100, descends onto the lower support plate 434 and resets, waiting for the next release of the pallets 100.

[0050] The receiving assembly includes a receiving plate 441 and a movable support plate 442. The receiving plate 441 has a receiving port. The movable support plate 442 is movably mounted on the receiving plate 441 via a fourth translation cylinder 443 at the bottom of the receiving plate 441, and is located on opposite sides of the receiving port to support the material trays 100 to be received. A guide block 444 is provided at each end corner of the receiving port, supported by a guide fixing block 445 on the receiving plate 441. The guide block 444 has a trapezoidal structure, with its hypotenuse facing upwards and towards the inside of the receiving port. The connection between the hypotenuse and the adjacent straight edge of the guide block 444 has a rounded chamfer. The guide blocks 444 allow the receiving plate 441 to smoothly guide the material trays 100 into the receiving port, ensuring that each material tray 100 is positioned consistently. On both sides of the receiving port where there is no movable support plate 442, guide blocks 444 are directly provided on the receiving plate 441, which can further guide and position the connecting tray 100.

[0051] Furthermore, the first lifting drive mechanism includes a first feeding screw 446, a first feeding motor, a first feeding guide rail 447, and a receiving connecting plate 448. The first feeding screw 446 and the first feeding motor are vertically fixed inside the machine base 1 via a vertical plate. One end of the first feeding screw 446 is connected to the output end of the first feeding motor via a coupling or a common mechanical connection structure such as a synchronous pulley or synchronous belt, and is driven to rotate by the first feeding motor. The first feeding guide rail 447 is arranged parallel to both sides of the first feeding screw 446 on the vertical plate. The receiving connecting plate 448 is located on the nut of the first feeding screw 446 and is slidably connected to the first feeding guide rail 447 via a matching slider. The receiving connecting plate 448 is provided with first supporting reinforcing ribs 449 on both sides. The first supporting reinforcing ribs 449 are fixedly connected to the bottom of the receiving plate 441 so as to drive the receiving plate 441 to lift.

[0052] The size of the top plate 451 is smaller than that of the tray 100 so that it can rise to avoid the movable support plates 442 on both sides of the receiving plate 441 and support the middle of the product for stable feeding. The second lifting drive mechanism includes a second feeding screw 452, a second feeding motor 453, a second feeding guide rail 454, and a lifting connecting plate 455. The second feeding screw 452 and the second feeding motor 453 are vertically fixed in the machine base 1 by a fixed upright plate 456. One end of the second feeding screw 452 is connected to the output end of the second feeding motor 453 by a coupling or a synchronous pulley, synchronous belt, or other common mechanical connection structure, and is driven to rotate by the second feeding motor 453. The guide rail 454 is arranged parallel to both sides of the second feeding screw 452 on the fixed side plate 314. The lifting connecting plate 455 is arranged on the nut of the second feeding screw 452 and is slidably connected to the second feeding guide rail 454 through a matching slider. The lifting connecting plate 455 is provided with second supporting reinforcing ribs 457 on both sides. The second supporting reinforcing ribs 457 are fixedly connected to the bottom of the feeding top plate 451 so as to drive the feeding top plate 451 to rise and fall to connect the receiving plate 441 with the product tray 100.

[0053] The motors involved in this embodiment, such as the first motor 222, the second motor 227, the third motor, the fourth motor 262, the first feeding motor, and the second feeding motor 453, can be stepper motors or servo motors.

[0054] Further reference Figure 14The unloading robot 42 includes an unloading X-axis moving module 421, a first unloading Y-axis moving module 422, an unloading Z-axis moving module 423, a guide bracket 424, a second unloading Y-axis moving module 425, and an unloading product picking component 426. The first unloading Y-axis moving module 422 is mounted on the machine base 1 via a support frame. On one side parallel to the first unloading Y-axis moving module 422, an unloading Y-axis guide rail 427 is also mounted via a support frame. The unloading X-axis moving module 421 is mounted on the first unloading Y-axis moving module 422. Furthermore, the unloading X-axis moving module 421 is mounted across the first unloading Y-axis moving module 422 and the unloading Y-axis guide rail 427 via a crossbeam. Driven by the first unloading Y-axis moving module 422, it translates along the unloading Y-axis guide rail 427. The Z-axis unloading moving module 423 is mounted on the X-axis unloading moving module 421, and the guide bracket 424 is mounted on the Z-axis unloading moving module 423 and parallel to the first Y-axis unloading moving module 422. The unloading product picking component 426 is mounted on the second Y-axis unloading moving module 425. In this embodiment, the unloading product picking component 426 uses an existing vacuum nozzle to pick up products on the product conveyor line by vacuum adsorption. The unloading product pickup component 426 is driven by an unloading X-axis moving module 421, an unloading Y-axis moving module (first unloading Y-axis moving module 422 and second unloading Y-axis moving module 425), and an unloading Z-axis moving module 423 to perform three-axis movements: horizontal lateral, horizontal longitudinal, and vertical lifting. The unloading X-axis moving module 421, unloading Y-axis moving module, and unloading Z-axis moving module 423 include, but are not limited to, linear motors, servo motors, and lead screws—all power devices, transmission devices, and control devices capable of horizontal X-axis, Y-axis, and vertical Z-axis movements based on common electromechanical knowledge. The inclusion of the second unloading Y-axis moving module 425 allows the unloading product pickup component 426 to extend its unloading distance further, greatly expanding its operating range and enabling it to cover a larger product conveyor line area and receiving area, adapting to different production line layouts and product specifications. Driven by the unloading X-axis moving module 421, the unloading Y-axis moving module (first unloading Y-axis moving module 422 and second unloading Y-axis moving module 425), and the unloading Z-axis moving module 423, the unloading product picking component 426 picks up the products one by one from the product conveyor line and transfers them to the material tray 100 on the receiving plate 441.

[0055] Product conveyor line 1 can be an existing belt conveyor or roller conveyor, and the conveying direction of product conveyor line 1 is set perpendicular to the unloading direction.

[0056] Additionally, it should be noted that the equipment in this application also includes a control system (not shown in the figure, but this does not affect the understanding). The system uses a programmable logic controller (PLC) as the core control unit, which is responsible for receiving various sensor signals, processing logical sequence instructions, and issuing action commands to all actuators (such as motors, cylinders, vacuum generators, etc.) to ensure that the entire workflow is orderly, accurate, and continuous. At key nodes of the entire equipment, such as the detection of the presence or absence of the material tray, the detection of the product's arrival, and the detection of the cylinder stroke, common sensing elements such as photoelectric sensors, proximity switches, or limit switches are installed to provide real-time status feedback to the PLC, realizing safe interlocking and precise control of the process. Since these are mature technologies and do not affect the understanding of this invention, they will not be described in detail here.

[0057] The workflow of this equipment is a highly automated cyclical process, mainly divided into three stages: feeding and empty disk processing, positioning and detection, and sorting and unloading and full disk buffering.

[0058] I. Material Feeding Stage Full-load tray stacking and preparation: The operator stacks multiple trays 100 filled with products to be tested into the hopper of the full-load stacking module 21. The hopper tray 212 extends under the drive of the first drive cylinder 216, and the protrusion structure inserts into the bottom of the tray 100 to support the entire tray 100 stack.

[0059] Single-disc separation and transfer: The loading top plate 226 of the lifting mechanism rises under the drive of the second motor 227, passes through the U-shaped moving pallet 221, and supports the bottommost pallet 100 of the pallet 100 stack. The hopper pallet 212 retracts under the drive of the cylinder, releasing the support for the bottommost pallet 100, allowing it to be fully supported by the top plate. The top plate descends carrying a single full pallet 100, while the hopper pallet 212 extends again, inserting into the bottom of the remaining pallet 100 stack, supporting it again. The top plate descends to the plane of the U-shaped moving pallet 221, places the single full pallet 100 on the U-shaped pallet, and continues to descend and reset. The first synchronous conveying mechanism of the single-disc transfer module 22 is activated, driving the U-shaped moving pallet 221 to carry the full pallet 100 along the linear guide rail, transferring it to the waiting loading module 23.

[0060] Material tray 100 positioning and waiting: The full material tray 100 is fed between the two supporting side plates 231314 of the waiting loading module 23. The side positioning plate 232 moves inward under the drive of the second drive cylinder, and the protrusion structure on it inserts into the bottom of the material tray 100, supporting the material tray 100 and accurately positioning it in the waiting position, ready to be picked up.

[0061] Product Pickup and Transfer: The loading robot 24 moves under the drive of the X, Y, and Z axis modules. Its end vacuum suction cup descends and picks up the products in the tray 100 of the waiting loading module 23. The robot lifts the products and moves them above the secondary positioning moving platform 31, and then places the products on the designated positioning station of the positioning platform 315.

[0062] Empty tray 100 recovery: After all products in tray 100 have been removed, the side positioning plate 232 retracts, releasing its support for the empty tray 100. The support rod 251 of the empty tray lifting module 25 rises under the drive of the vertical lifting module (third motor + second lead screw 253) to catch the empty tray 100. The support rod 251 carries the empty tray 100 down into the machine base 1 and places it on the second synchronous belt 266 of the empty tray conveying module 26. The empty tray conveying module 26 starts, conveying the empty tray 100 to the equipment outlet, where it falls into the collection box, completing the empty tray recovery at the loading end.

[0063] II. Positioning and Detection Phase Secondary precise positioning of the product: After the product is placed on the positioning platform 315, it is initially positioned by the first fixed limiting block 318 and the second fixed limiting block 319. Subsequently, the first movable limiting mechanism 316 and the second movable limiting mechanism 317 are activated, and their respective drive motors drive the synchronous belt, moving the movable plate equipped with the movable limiting blocks toward the product, clamping the product from two directions, and achieving high-precision secondary positioning. Support bars support the product at the bottom to prevent deformation.

[0064] The stage moves to the inspection position: the reciprocating linear module 311 drives the entire secondary positioning mechanism (i.e., the moving stage) to move along the guide rail, transporting the positioned product directly below the vision inspection mechanism 32.

[0065] Thickness Measurement: The linear detection module 323 drives a connecting plate equipped with multiple spectral confocal thickness probes to move along the Y-axis. During this movement, the probes scan the product, enabling multi-point thickness measurement. The measurement data is transmitted to the control system for analysis to determine product compliance (and possible grade).

[0066] The platform moves to the unloading position: After the inspection is completed, the reciprocating linear module 311 drives the platform to move again, transporting the inspected products to the lower station of the transfer robot 33.

[0067] III. Material feeding stage Product transfer to the sorting line: The product picking component 334 (vacuum suction cup) of the transfer robot 33 moves under the drive of the X, Y, Z three-axis module to pick up the inspected products. According to the instructions of the control system, the transfer robot 33 transports the products and places them on the unloading product conveyor line 41 (i.e., the designated product sorting channel) corresponding to the inspection results.

[0068] Automatic distribution of empty material trays 100: A large number of empty material trays 100 are pre-stacked in the empty material tray stacking bin 43. The receiving plate 441 of the material receiving lifting mechanism 44 rises under the drive of the first lifting drive mechanism. The upper support plate 432 and the lifting support plate 433 at the bottom of the bin extend to support the second to last empty tray and above, the lower support plate 434 retracts, and the bottom empty tray falls onto the receiving plate 441. The receiving plate 441 carries the single empty tray down to the operating plane of the machine platform 1, and the movable support plate 442 extends under the drive of the cylinder to support the empty material tray 100.

[0069] Product sorting and loading into tray 100: The unloading robot 42 picks up products from the product conveyor line. Driven by the unloading X-axis moving module 421, the first unloading Y-axis moving module 422, the unloading Z-axis moving module 423, and the second unloading Y-axis moving module 425, the robot accurately places the products into the empty tray 100 of the corresponding sorting channel on the receiving plate 441.

[0070] Full tray 100 buffering and unloading: When a tray 100 on the receiving plate 441 is full of products, the unloading top plate 451 of the full tray receiving mechanism 45 rises under the drive of the second lifting drive mechanism, passes through the receiving port of the receiving plate 441, and supports the middle of the full tray 100. The movable support plate 442 at the bottom of the receiving plate 441 retracts, releasing support from the full tray 100. The unloading top plate 451 lowers with the full tray 100, placing it in the buffer area (or directly conveying it away). The receiving plate 441 rises again to pick up a new empty tray from the empty tray stacking bin, preparing for the next loading.

[0071] This cycle repeats to achieve automatic categorization, traying, and caching of different product categories.

[0072] Furthermore, the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. An automatic sorting device for product thickness detection, characterized in that: Including machine tools; The feeding conveyor mechanism includes a full-load stacking module, a single-plate conveying module, a waiting-for-feeding module, a feeding robot, an empty-plate lifting module, and an empty-plate conveying module. The full-load stacking module is used to stack multiple full-load trays. During feeding, each tray descends to the single-plate conveying module and is then conveyed to the waiting-for-feeding module. The feeding robot then removes the products from the trays. Once all products have been removed, the empty-plate lifting module carries the empty trays from below the waiting-for-feeding module into the machine. The empty-plate conveying module then connects the empty trays and automatically sends them out of the equipment. The positioning and testing mechanism includes a secondary positioning mobile platform, a testing mechanism, and a transfer robot. The secondary positioning mobile platform docks with and carries the product to be tested transferred by the loading robot. The testing mechanism is mounted above the secondary positioning mobile platform and includes a driving translation mechanism and multiple measuring heads arranged thereon. The transfer robot is mounted above the secondary positioning mobile platform and is used to transfer the tested product to the next workstation. The material unloading conveyor system has at least two product sorting channels for receiving products with different test results. Each product sorting channel includes a product unloading conveyor line, a product unloading robot, an empty tray stacking bin, a material unloading and receiving lifting mechanism, and a full tray receiving mechanism. The product unloading conveyor line is used to carry and transport the tested products. The product unloading robot picks up the products on the product unloading conveyor line and transfers them to the tray at the material unloading and receiving lifting mechanism. Once the tray is full, it is removed and buffered by the full tray receiving mechanism. The empty tray stacking bin can automatically release individual empty trays.

2. The automatic product thickness detection and sorting equipment according to claim 1, characterized in that: The secondary positioning mobile platform includes a secondary positioning mechanism and a reciprocating linear module. Reciprocating guide rails are arranged parallel to each other on both sides of the reciprocating linear module. The secondary positioning mechanism is mounted on the reciprocating linear module and the reciprocating guide rails. The reciprocating linear module drives the secondary positioning mechanism to reciprocate horizontally below the detection mechanism and the transfer robot. The secondary positioning mechanism includes a mobile carrier plate, side plates, a positioning platform, a first movable limiting mechanism, and a second movable limiting mechanism. The positioning platform is mounted on the mobile carrier plate via the two side plates. The mobile carrier plate is mounted on the reciprocating linear module and the reciprocating guide rails. The positioning platform has multiple positioning stations. A first fixed limiting block and a second fixed limiting block are respectively provided on the outer periphery of the adjacent two sides of each positioning station.

3. The automatic product thickness detection and sorting equipment according to claim 2, characterized in that: The first movable limiting mechanism includes a first limiting synchronous wheel, a first limiting synchronous belt, a first limiting drive motor, a first movable plate, and a first movable limiting block. Multiple first movable limiting blocks are arranged parallel to and equidistantly on the first movable plate. The first movable plate is connected to the first limiting synchronous belt via clamping blocks. The first limiting drive motor drives the first limiting synchronous wheel to rotate, causing the first limiting synchronous belt and the first movable plate on it to move, thereby causing the first movable limiting block to move closer to or away from the first fixed limiting block. The second movable limiting mechanism includes a second limiting synchronous wheel, a second limiting synchronous belt, a second limiting drive motor, a second movable plate, and a second movable limiting block. The second movable plate is located below the positioning platform. Multiple second movable limiting blocks are arranged parallel to and equidistantly on the second movable plate. The second movable limiting block passes through the positioning platform. The second movable plate is connected to the second limiting synchronous belt via clamping blocks. The second limiting drive motor drives the second limiting synchronous wheel to rotate, causing the second limiting synchronous belt and the second movable plate on it to move, thereby causing the second movable limiting block to move closer to or away from the second fixed limiting block.

4. The automatic product thickness detection and sorting equipment according to claim 1, characterized in that: The transfer robot includes a transfer X-axis moving module, a transfer Y-axis moving module, a transfer Z-axis moving module, and a transfer product picking component. The transfer X-axis moving module is mounted on both sides of the secondary positioning moving platform via a support frame. The transfer Y-axis moving module is mounted on the transfer X-axis moving module. The transfer Z-axis moving module is mounted on the transfer Y-axis moving module. The product picking component is mounted on the transfer Z-axis moving module via a mounting plate. The mounting plate has multiple transfer cylinders spaced at equal intervals. The transfer product picking component is mounted on each of the transfer cylinders, and they correspond one-to-one.

5. The automatic product thickness detection and sorting equipment according to claim 1, characterized in that: The driving translation mechanism includes a detection bracket and a detection linear module mounted thereon. The multiple measuring heads are mounted on the detection linear module via a connecting plate and are driven by the detection linear module to move linearly along the horizontal Y-axis above the secondary positioning moving platform. The multiple measuring heads are evenly spaced on the connecting plate.

6. The automatic product thickness detection and sorting equipment according to claim 1, characterized in that: The full-material stacking module is mounted above the machine and includes a hopper base plate, a hopper tray, and a hopper tray driving component. A tray window is opened in the middle of the hopper base plate, and the hopper tray supports the stacked full-material trays above the tray window. The single-tray conveying module is located below the hopper tray and includes a first synchronous conveying mechanism, a U-shaped moving tray, and a lifting mechanism. The lifting mechanism is located below the tray window, rises through the U-shaped moving tray to support the single full-material tray, and descends to bring the full-material tray onto the U-shaped moving tray. The first synchronous conveying mechanism drives the U-shaped moving tray to convey the full-material tray. The waiting-to-load module and the single-tray conveying module are located on the same conveying line. The system includes a support side plate and a side positioning tray on the support side plate, used to receive a full tray conveyed by the U-shaped moving tray; a loading robot is mounted above the waiting loading module, used to transfer products in the tray to the secondary positioning moving platform; an empty tray lifting module includes a vertical lifting module and a support rod on the vertical lifting module, the vertical lifting module extending into the machine base, used to drive the support rod to move up and down below the waiting loading module, connecting the tray with empty products; an empty tray conveying module is located inside the machine base, including a second synchronous conveying mechanism, extending below the support rod and staggered with the support rod, used to receive the tray on the support rod.

7. The automatic product thickness detection and sorting equipment according to claim 6, characterized in that: The hopper pallet driving component includes a first driving cylinder, the fixed end of which is disposed on the bottom plate of the hopper. The hopper pallet is disposed opposite to each other on both sides of the tray window and connected to the piston end of the first driving cylinder. The hopper pallet is provided with multiple protrusion structures on the side near the tray window. The hopper pallet is driven by the first driving cylinder to extend towards the tray window to support the tray.

8. The automatic product thickness detection and sorting equipment according to claim 1, characterized in that: The empty pallet stacking hopper, the material receiving lifting mechanism, and the full pallet receiving mechanism are arranged sequentially in vertical space. The empty pallet stacking hopper is mounted above the machine platform, and the full pallet receiving mechanism is located inside the machine platform. The material receiving lifting mechanism includes a first lifting drive mechanism vertically mounted inside the machine platform and a receiving component mounted on the first lifting drive mechanism. The receiving component rises above the machine platform under the drive of the first lifting drive mechanism to receive the single pallet and then falls back to the operating plane of the machine platform. The full pallet receiving mechanism includes a second lifting drive mechanism located on one side of the first lifting drive mechanism and a material receiving top plate mounted on the second lifting drive mechanism.

9. The automatic product thickness detection and sorting equipment according to claim 8, characterized in that: The empty pallet stacking hopper includes a base plate with a through-type operation window in the middle, an upper support plate, a lifting support plate, and a lower support plate movably disposed on opposite sides of the operation window. The upper support plate is disposed above the base plate by a first translation cylinder, which drives it to move on both sides of the operation window and insert into the bottom of the second-to-last pallet. The lifting support plate is disposed on the base plate by a second translation cylinder, which is also equipped with a lifting cylinder. The lifting support plate has an L-shaped structure, with its long side disposed on the lifting cylinder. The second translation cylinder and the lifting cylinder drive the horizontal movement and vertical lifting of the lifting support plate, respectively. The lower support plate is disposed below the base plate by a third translation cylinder, which drives it to move on both sides of the operation window and move to the bottom of the lowest pallet.

10. The automatic product thickness detection and sorting equipment according to claim 8, characterized in that: The receiving assembly includes a receiving plate and a movable support plate. The receiving plate has a receiving port. The movable support plate is movably mounted on the receiving plate by a fourth translation cylinder and is located on opposite sides of the receiving port to support the material tray to be received. A guide block is provided in each corner of the receiving port and is mounted on the receiving plate by a guide fixing block. The guide block has a trapezoidal structure and the hypotenuse of the guide block faces upward and towards the inside of the receiving port.

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