Product feeding circulation line and display screen processing circulation line

Abstract

The invention discloses a product feeding circulation line which comprises a first product transfer table, a first conveying belt module and a second conveying belt module, the first conveying belt module is installed above the second conveying belt module, one end of the first conveying belt module is connected with the first product transfer table, and the other end of the first conveying belt module is used for containing a material disc containing products; one end of the second conveying belt module is connected with the first product transfer table, and the other end is used for recycling the unloaded material disc. The invention further discloses a display screen processing circulation line which comprises display screen dispensing equipment and the product feeding circulation line, and the product feeding circulation line is arranged on one side of the display screen dispensing equipment and used for transporting the display screens to the display screen dispensing equipment. According to the invention, the automatic circulation line of the existing display screen material trays is optimized, so that the seamless joint between the material tray circulation line and the feeding station of the dispensing equipment and the circulation of the material trays on the material tray circulation line are realized.

Description

Technical Field

[0001] This invention relates to the field of display screen manufacturing and processing technology, specifically to a product loading and processing line and a display screen processing line. Background Technology

[0002] Display screen dispensing is a core step in the precision coating process of display screen manufacturing. It involves using dispensing equipment to precisely apply specific adhesives to the display screen's bezel, backlight module, flexible printed circuit board (FPC), chips, and other components. This achieves functions such as sealing, bonding, waterproofing, insulation, and thermal conductivity, directly impacting the display screen's structural stability, reliability, and lifespan. Optimizing the current automated material tray transfer line for display screen dispensing to meet the precise feeding, positioning, and buffering requirements of the material tray, and seamlessly integrating with the loading and unloading stations of the dispensing equipment to reduce labor costs, is a problem that needs to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a product loading and unloading conveyor line and a display screen processing conveyor line. By optimizing existing automated conveyor lines for display screen material trays, seamless integration between the material tray conveyor line and the loading station of the dispensing equipment is achieved, along with the circulation of material trays on the conveyor line. To achieve the above objective, this invention adopts the following technical solution:

[0004] This invention discloses a product loading and unloading line, comprising: a first product transfer platform, a first conveyor belt module, and a second conveyor belt module. The first conveyor belt module is mounted above the second conveyor belt module. One end of the first conveyor belt module is connected to the first product transfer platform, and the other end is used to hold a material tray containing products. One end of the second conveyor belt module is connected to the first product transfer platform, and the other end is used to retrieve empty material trays.

[0005] The first product transfer station includes: a first frame, a first material tray transfer module, a second material tray transfer module, a transfer platform, a first lifting module, and a third conveyor belt module. The first frame has two layers, with the first material tray transfer module, the second material tray transfer module, and the transfer platform installed on the upper layer of the first frame. The first lifting module is located between the two layers of the frame, and the third conveyor belt module is installed on the lower layer of the first frame.

[0006] The transfer station is located between the first material tray transfer module and the second material tray transfer module. The other end of the first material tray transfer module is connected to the first conveyor belt module to transfer material trays containing products from the first conveyor belt module to the transfer station. The other end of the second material tray transfer module is connected to the first lifting module. After the products placed on the transfer station are removed by the next stage of the operation and loading is completed, the second material tray transfer module transfers the empty material tray from the transfer station to the first lifting module.

[0007] The third conveyor belt module is located between the first lifting module and the second conveyor belt module. The empty material tray is transferred from the first lifting module and the third conveyor belt module to the second conveyor belt module, thus completing the material tray transfer.

[0008] Furthermore, the first product transfer platform also includes a second lifting module, which is disposed between the first material tray transfer module and the first conveyor belt module. When the first conveyor belt module transports multiple stacked material trays, the second lifting module is used to lift the stacked material trays upwards, so that the first material tray transfer module can transfer the material trays one by one.

[0009] Preferably, a fourth conveyor belt module is further provided between the first conveyor belt module and the second lifting module to transfer the material tray from the first conveyor belt module to the second lifting module. The second lifting module is provided with a pair of second forks, and the end of the fourth conveyor belt module is located directly below the second forks, with the distance between the second forks greater than the width of the fourth conveyor belt module. When the second forks descend to their lowest point, they stop at either side of the fourth conveyor belt module, and the material tray is transferred from the fourth conveyor belt module to the second forks.

[0010] Furthermore, two transfer platforms are provided, namely a first transfer platform and a second transfer platform. The first transfer platform and the second transfer platform are sequentially arranged between the first material tray transfer module and the second material tray transfer module. The next stage operation equipment picks up the product from the first transfer platform. The first material tray transfer module is provided with two pairs of clamps, namely a first clamp and a second clamp, which are sequentially arranged. The first clamp is used to transfer the material tray containing the product to the first transfer platform, and the second clamp is used to transfer the empty material tray from the first transfer platform to the second transfer platform.

[0011] Furthermore, the first lifting module is provided with a pair of first forks, and the empty material tray is placed on the first forks. The end of the third conveyor belt module is located directly below the first forks, and the distance between the first forks is greater than the width of the third conveyor belt module. When the empty material tray is lowered to the bottom under the control of the first lifting module, the first forks stop on both sides of the third conveyor belt module, and the third conveyor belt module removes the empty material tray from the first forks.

[0012] Furthermore, the first product transfer platform also includes a steering assembly, which is disposed between the third conveyor belt module and the second conveyor belt module to change the conveying direction of the material tray. The steering assembly includes a lifting module and a roller module, with the roller module mounted above the lifting module. When the material tray is transferred from the third conveyor belt module to the roller module, the lifting module lifts it upwards.

[0013] The roller module includes multiple rollers, a servo mechanism, and a synchronous pulley set. The multiple rollers are arranged parallel to each other along the direction of the second conveyor belt module, and the servo mechanism is connected to the multiple rollers through the synchronous pulley set. The multiple rollers rotate simultaneously under the control of the servo mechanism, thereby driving the material tray to move towards the second conveyor belt module.

[0014] Preferably, a wide-view module is also installed on the first product transfer platform for photographing the product. The wide-view module is installed above the transfer platform and includes a visual camera and a light source.

[0015] In some embodiments, the product loading and unloading line further includes a second product transfer table and a fifth conveyor belt module. One end of the fifth conveyor belt module is connected to the second product transfer table, and the other end is connected to the final stage operation equipment, for transferring the processed products to the second product transfer table.

[0016] The second product transfer station includes: a second frame, a traversing module, a third lifting module, a fourth lifting module, a third material tray transfer module, a fourth material tray transfer module, and a first robotic arm. The second frame has upper and lower layers. The traversing module and the fourth material tray transfer module are installed on the lower layer of the second frame. The first robotic arm is installed on the upper layer of the second frame. The third and fourth lifting modules are located between the two layers of the frame. The third material tray transfer module is installed above and between the third and fourth lifting modules.

[0017] One end of the traversing module is connected to the second conveyor belt module, and the other end is connected to the third lifting module. An empty material tray is transferred from the second conveyor belt module and the traversing module to the third lifting module. The third material tray transfer module transfers the material tray from the third lifting module to the fourth lifting module. The end of the fifth conveyor belt module extends into the upper layer of the second frame, and the first robotic arm transfers the product from the fifth conveyor belt module to the material tray on the fourth lifting module. The end of the fourth material tray transfer module is connected to the bottom of the fourth lifting module, and the material tray containing the product is conveyed externally through the fourth material tray transfer module.

[0018] Furthermore, a sixth conveyor belt module is installed on the transverse module, and a seventh conveyor belt module is provided between the transverse module and the third lifting module. An empty material tray is transported to the transverse module via the second conveyor belt module, and then transferred to the third lifting module via the sixth and seventh conveyor belt modules.

[0019] Preferably, the third lifting module is provided with a pair of third forks, the end of the seventh conveyor belt module is located directly below the third forks and the distance between the third forks is greater than the width of the seventh conveyor belt module. When the third forks descend to the bottom, they stop on both sides of the seventh conveyor belt module, and the material tray is transferred from the seventh conveyor belt module to the third forks.

[0020] The fourth lifting module is provided with a pair of fourth forks. The end of the fourth material tray transfer module is located directly below the fourth forks, and the distance between the fourth forks is greater than the width of the fourth material tray transfer module. When the fourth forks descend to the bottom, they stop on both sides of the fourth material tray transfer module, and the fourth material tray transfer module moves the material tray off the fourth forks.

[0021] This invention also discloses a display screen processing line, comprising: a display screen dispensing device and a product loading line as described in any one of claims 1-10, wherein the product loading line is disposed on one side of the display screen dispensing device for transporting the display screen to the display screen dispensing device. A second robotic arm is provided on the display screen dispensing device for transferring the display screen from the product loading line to the display screen dispensing device.

[0022] Furthermore, the aforementioned display screen processing line also includes a product unloading conveyor line, which is located on the other side of the display screen dispensing equipment and connected to the next-stage processing equipment, for transporting the display screens that have completed the dispensing operation to the next-stage processing equipment. The display screen dispensing equipment is equipped with a third robotic arm, used to transfer the display screens that have completed the dispensing operation from the display screen dispensing equipment to the product unloading conveyor line.

[0023] After adopting the above technical solution, the present invention has the following effects: 1. The product loading and transfer line in this invention optimizes the existing automated product loading and transfer line by deploying lifting modules, conveyor belt modules and material tray transfer modules, thereby achieving seamless connection between the material tray transfer line and the equipment loading station, as well as the circulation of material trays on the material tray transfer line.

[0024] 2. The product feeding conveyor in this invention forms a material tray circulation while effectively connecting with the equipment of the next stage of operation, enhancing the continuity between various processes in product manufacturing and processing, and effectively reducing labor costs and material tray usage costs.

[0025] 3. The display screen processing line in this invention optimizes the existing automated processing line for display screen products by deploying a product loading line, a product unloading line, and a display screen dispensing equipment. It achieves seamless connection between the material tray transfer line and the loading and unloading stations on the dispensing equipment, as well as the circulation of material trays on the material tray transfer line. This enhances the continuity between various processes in display screen manufacturing and effectively reduces labor costs and material tray usage costs. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the product feeding and transfer line in this invention.

[0027] Figure 2 This is a top view of the product loading and transfer line in this invention (the arrows in the figure indicate the direction of product transfer).

[0028] Figure 3 This is a top view of the product feeding conveyor line in this invention (the arrows in the figure indicate the flow direction of the material trays).

[0029] Figure 4 This is a three-dimensional structural diagram of the first conveyor belt module and the second conveyor belt module in this invention.

[0030] Figure 5 This is an elevation view of the first conveyor belt module and the second conveyor belt module in this invention (solid arrows in the figure indicate the flow direction of the material tray containing products, and dashed arrows indicate the flow direction of the empty material tray).

[0031] Figure 6 This is a three-dimensional structural diagram of the first product transfer platform in this invention (with the upper frame hidden).

[0032] Figure 7 This is a three-dimensional structural diagram of the first material tray transfer module in this invention.

[0033] Figure 8 This is a three-dimensional structural diagram of the second material tray transfer module in this invention.

[0034] Figure 9 This is a three-dimensional structural diagram (expanded state) of the first lifting module and the third conveyor belt module in this invention.

[0035] Figure 10 This is a three-dimensional structural diagram of the first lifting module in this invention.

[0036] Figure 11 This is a three-dimensional structural diagram (expanded state) of the second lifting module and the fourth conveyor belt module in this invention.

[0037] Figure 12 This is a three-dimensional structural diagram of the steering component in this invention.

[0038] Figure 13 This is an exploded view of the steering component in this invention.

[0039] Figure 14 This is a three-dimensional structural diagram of the large field-of-view module in this invention.

[0040] Figure 15 This is a three-dimensional structural diagram of the second product transfer platform and the fifth conveyor belt module in this invention.

[0041] Figure 16 This is a top view of the second product transfer platform and the fifth conveyor belt module in this invention (with the transverse module and the upper frame hidden).

[0042] Figure 17 This is a three-dimensional structural diagram of the transverse module in this invention (disassembled from the external frame).

[0043] Figure 18 This is a three-dimensional structural diagram (expanded state) of the transverse module, the seventh conveyor belt module and the third lifting module in this invention.

[0044] Figure 19 This is a three-dimensional structural diagram (exploded state) of the third lifting module, the fourth lifting module, and the third material tray transfer module in this invention.

[0045] Figure 20 This is a three-dimensional structural diagram (expanded state) of the fourth material tray transfer module and the fourth lifting module in this invention.

[0046] Figure 21 This is a three-dimensional structural diagram of the first robotic arm in this invention.

[0047] Figure 22 This is a three-dimensional structural diagram of the display screen processing flow line in this invention.

[0048] Figure 23 This is a three-dimensional structural diagram of the display screen dispensing equipment in this invention.

[0049] Main component symbols: 1: Product loading and unloading line; 11: First product transfer table; 111: First frame; 112: First material tray transfer module; 1121: First clamp; 1122: Second clamp; 113: Transfer table; 113A: First transfer table; 113B: Second transfer table; 114: Second material tray transfer module; 115: First lifting module; 1151: First fork arm; 116: Third conveyor belt module; 117: Second lifting module; 1171: Second fork arm; 118: Fourth conveyor belt module; 119: Steering assembly; 1191: Lifting module; 1192: Roller module; 11921: ... 11922: Servo mechanism; 11923: Synchronous pulley assembly; 120: Wide field of view module; 1201: Vision camera; 1202: Light source; 12: First conveyor belt module; 13: Second conveyor belt module; 14: Second product transfer platform; 141: Second frame; 142: Lateral movement module; 143: Sixth conveyor belt module; 144: Seventh conveyor belt module; 145: Third lifting module; 1451: Third forklift; 146: Fourth lifting module; 147: Third material tray transfer module; 148: Fourth material tray transfer module; 149: First robotic arm; 15: Fifth conveyor belt module. 2: Display screen dispensing equipment; 21: Second robotic arm; 22: Third robotic arm; 3: Product unloading transfer line; 4: Material tray. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0051] In the description of this invention, it should be noted that the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] like Figures 1 to 5 As shown, this invention discloses a product loading and unloading line, comprising: a first product transfer platform 11, a first conveyor belt module 12, and a second conveyor belt module 13. The first conveyor belt module 12 is mounted above the second conveyor belt module 13. One end of the first conveyor belt module 12 is connected to the first product transfer platform 11, and the other end is used to place a material tray 4 containing products. One end of the second conveyor belt module 13 is connected to the first product transfer platform 11, and the other end is used to retrieve empty material trays 4.

[0053] like Figures 6 to 10As shown, the first product transfer station 11 includes: a first frame 111, a first material tray transfer module 112, a second material tray transfer module 114, a transfer station 113, a first lifting module 115, and a third conveyor belt module 116. The first frame 111 has two layers. The first material tray transfer module 112, the second material tray transfer module 114, and the transfer station 113 are installed on the upper layer of the first frame 111. The first lifting module 115 is located between the two layers of the frame. The third conveyor belt module 116 is installed on the lower layer of the first frame 111.

[0054] The transfer station 113 is located between the first material tray transfer module 112 and the second material tray transfer module 114. The other end of the first material tray transfer module 112 is connected to the first conveyor belt module 12 to transfer the material tray 4 containing the product from the first conveyor belt module 12 to the transfer station 113. The other end of the second material tray transfer module 114 is connected to the first lifting module 115. After the product placed on the transfer station 113 is removed by the next stage operation equipment (not shown in the figure) to complete the loading, the second material tray transfer module 114 transfers the empty material tray 4 from the transfer station 113 to the first lifting module 115.

[0055] The third conveyor belt module 116 is located between the first lifting module 115 and the second conveyor belt module 13. The empty material tray 4 is transferred from the first lifting module 115 and the third conveyor belt module 116 to the second conveyor belt module 13, thus completing the transfer of the material tray 4.

[0056] Combination Figure 11 As shown, in this embodiment, the first product transfer platform 11 further includes a second lifting module 117. The second lifting module 117 is disposed between the first material tray transfer module 112 and the first conveyor belt module 12. When the first conveyor belt module 12 transports multiple stacked material trays 4, the second lifting module 117 is used to lift the stacked material trays 4 upwards, so that the first material tray transfer module 112 can transfer the material trays 4 one by one.

[0057] Meanwhile, a fourth conveyor belt module 118 is also provided between the first conveyor belt module 12 and the second lifting module 117 to transfer the material tray 4 from the first conveyor belt module 12 to the second lifting module 117.

[0058] Furthermore, a pair of second forks 1171 are provided on the second lifting module 117. The end of the fourth conveyor belt module 118 is located directly below the second forks 1171, and the distance between the second forks 1171 is greater than the width of the fourth conveyor belt module 118. When the second forks 1171 descend to the bottom, they stop on both sides of the fourth conveyor belt module 118, and the material tray 4 is transferred from the fourth conveyor belt module 118 to the second forks 1171.

[0059] Furthermore, a pair of first forks 1151 are also provided on the first lifting module 115. The unloaded material tray 4 is placed on the first forks 1151. The end of the third conveyor belt module 116 is located directly below the first forks 1151, and the distance between the first forks 1151 is greater than the width of the third conveyor belt module 116. When the unloaded material tray 4 is lowered to the bottom under the control of the first lifting module 115, the first forks 1151 stop on both sides of the third conveyor belt module 116, and the third conveyor belt module 116 removes the unloaded material tray 4 from the first forks 1151.

[0060] Secondly, in this embodiment, there are two transfer stations 113, namely a first transfer station 113A and a second transfer station 113B. The first transfer station 113A and the second transfer station 113B are sequentially arranged between the first material tray transfer module 112 and the second material tray transfer module 114. The next stage operation equipment takes the product from the first transfer station 113A.

[0061] The first material tray transfer module 112 is equipped with two pairs of clamps, namely a first clamp 1121 and a second clamp 1122, which are arranged sequentially. The first clamp 1121 is used to transfer the material tray 4 containing products to the first transfer platform 113A, and the second clamp 1122 is used to transfer the empty material tray 4 from the first transfer platform 113A to the second transfer platform 113B. In this embodiment, after the first clamp 1121 transfers the material tray A containing products to the first transfer platform 113A, the first clamp 1121 and the second clamp 1122 reset, and the next stage operation equipment removes the products. Then, the first clamp 1121 picks up the next material tray 4 containing products, and the second clamp 1122 picks up the empty material tray 4, moves forward, and places the empty material tray 4 and the material tray 4 containing products on the corresponding transfer platforms 113.

[0062] like Figure 12 and Figure 13 As shown, in this embodiment, the first product transfer platform 11 further includes a steering component 119, which is disposed between the third conveyor belt module 116 and the second conveyor belt module 13 to change the conveying direction of the material tray 4.

[0063] The steering assembly 119 includes a lifting module 1191 and a roller module 1192. The roller module 1192 is installed above the lifting module 1191. When the material tray 4 is transferred to the roller module 1192 via the third conveyor belt module 116, the lifting module 1191 lifts upward.

[0064] The roller module 1192 includes multiple rollers 11921, a servo mechanism 11922, and a synchronous pulley group 11923. The multiple rollers 11921 are arranged parallel to each other along the direction of the second conveyor belt module 13, and the servo mechanism 11922 is connected to the multiple rollers 11921 through the synchronous pulley group 11923. The multiple rollers 11921 rotate simultaneously under the control of the servo mechanism 11922, thereby driving the material tray 4 to move towards the second conveyor belt module 13.

[0065] In addition, combined Figure 14 As shown, a wide field of view module 120 is also installed on the first product transfer platform 11 for taking pictures of the product. The wide field of view module 120 is installed above the transfer platform 113. When there are two transfer platforms 113, the wide field of view module 120 is installed on the first transfer platform 113A. The wide field of view module 120 includes a visual camera 1201 and a light source 1202.

[0066] like Figures 1 to 3 as well as Figure 15 , Figure 16 As shown, the product loading and transfer line also includes a second product transfer table 14 and a fifth conveyor belt module 15. One end of the fifth conveyor belt module 15 is connected to the second product transfer table 14, and the other end is connected to the final stage operation equipment (not shown in the figure) to transfer the processed products to the second product transfer table 14.

[0067] The second product transfer platform 14 includes a second frame 141, a transverse module 142, a third lifting module 145, a fourth lifting module 146, a third material tray transfer module 147, a fourth material tray transfer module 148, and a first robotic arm 149. The second frame 141 has upper and lower layers. The transverse module 142 and the fourth material tray transfer module 148 are installed on the lower layer of the second frame 141. The first robotic arm 149 is installed on the upper layer of the second frame 141. The third lifting module 145 and the fourth lifting module 146 are located between the two layers of the frame. The third material tray transfer module 147 is installed above and between the third lifting module 145 and the fourth lifting module 146.

[0068] Combination Figures 17 to 21 As shown, one end of the transverse module 142 is connected to the second conveyor belt module 13, and the other end is connected to the third lifting module 145. The empty material tray 4 is transferred from the second conveyor belt module 13 and the transverse module 142 to the third lifting module 145. The third material tray transfer module 147 transfers the material tray 4 from the third lifting module 145 to the fourth lifting module 146.

[0069] The end of the fifth conveyor belt module 15 extends into the upper layer of the second frame 141. The first robotic arm 149 transfers the product from the fifth conveyor belt module 15 to the material tray 4 on the fourth lifting module 146. In this embodiment, the length of the fifth conveyor belt module 15 is set according to the distance between the final stage operation equipment and the second product transfer platform 14. If the length of a single conveyor belt module cannot cover the distance, it is formed by splicing multiple conveyor belt modules. The end of the fourth material tray transfer module 148 is connected to the bottom end of the fourth lifting module 146, and the material tray 4 containing the product is transported to the outside through the fourth material tray transfer module 148.

[0070] In this embodiment, a sixth conveyor belt module 143 is installed on the transverse module 142, and a seventh conveyor belt module 144 is disposed between the transverse module 142 and the third lifting module 145. The empty material tray 4 is conveyed to the transverse module 142 via the second conveyor belt module 13, and then transferred to the third lifting module 145 via the sixth conveyor belt module 143 and the seventh conveyor belt module 144.

[0071] The third lifting module 145 is equipped with a pair of third forks 1451. The end of the seventh conveyor belt module 144 is located directly below the third forks 1451 and the distance between the third forks 1451 is greater than the width of the seventh conveyor belt module 144. When the third forks 1451 descend to the bottom, they stop on both sides of the seventh conveyor belt module 144, and the material tray 4 is transferred from the seventh conveyor belt module 144 to the third forks 1451.

[0072] The fourth lifting module 146 is provided with a pair of fourth forks 1461. The end of the fourth material tray transfer module 148 is located directly below the fourth forks 1461 and the distance between the fourth forks 1461 is greater than the width of the fourth material tray transfer module 148. When the fourth forks 1461 descend to the bottom, they stop on both sides of the fourth material tray transfer module 148. The fourth material tray transfer module 148 moves the material tray 4 off the fourth forks 1461.

[0073] like Figure 22 and Figure 23 As shown, the present invention also discloses a display screen processing transfer line, including: a display screen dispensing equipment 2 and the above-mentioned product loading transfer line 1. The product loading transfer line 1 is disposed on one side of the display screen dispensing equipment 2 for transporting the display screen to the display screen dispensing equipment 2.

[0074] The display screen dispensing equipment 2 is equipped with a second robotic arm 21, which is used to transfer the display screen from the product loading line 1 to the display screen dispensing equipment 2.

[0075] In addition, in this embodiment, the display screen processing line also includes a product unloading line 3, which is located on the other side of the display screen dispensing equipment 2 and connected to the next stage operation equipment (not shown in the figure), in order to transport the display screen that has completed the dispensing operation to the next stage operation equipment.

[0076] The display screen dispensing equipment 2 is equipped with a third robotic arm 22, which is used to transfer the display screen that has completed the dispensing operation from the display screen dispensing equipment 2 to the product unloading transfer line 3.

[0077] The above description is merely a preferred embodiment of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. A product feeding conveyor line for conveying products placed on a material tray, characterized in that, include: A first product transfer platform, a first conveyor belt module, and a second conveyor belt module are provided. The first conveyor belt module is installed above the second conveyor belt module. One end of the first conveyor belt module is connected to the first product transfer platform, and the other end is used to place a material tray containing the product. One end of the second conveyor belt module is connected to the first product transfer platform, and the other end is used to collect empty material trays; The first product transfer station includes: a first frame, a first material tray transfer module, a second material tray transfer module, a transfer platform, a first lifting module, and a third conveyor belt module. The first frame has two layers, the first material tray transfer module, the second material tray transfer module, and the transfer platform are installed on the upper layer of the first frame, the first lifting module is located between the two layers of the frame, and the third conveyor belt module is installed on the lower layer of the first frame. The transfer station is located between the first material tray transfer module and the second material tray transfer module, and the other end of the first material tray transfer module is connected to the first conveyor belt module to transfer the material tray containing the product from the first conveyor belt module to the transfer station; the other end of the second material tray transfer module is connected to the first lifting module. After the product placed on the transfer station is removed by the next stage operation equipment to complete the loading, the second material tray transfer module transfers the empty material tray from the transfer station to the first lifting module. The third conveyor belt module is located between the first lifting module and the second conveyor belt module. The empty material tray is transferred from the first lifting module and the third conveyor belt module to the second conveyor belt module, thus completing the material tray transfer.

2. The product feeding conveyor line as described in claim 1, characterized in that: The first product transfer platform further includes a second lifting module, which is disposed between the first material tray transfer module and the first conveyor belt module. When the first conveyor belt module transports multiple stacked material trays, the second lifting module is used to lift the stacked material trays upwards, so that the first material tray transfer module can transfer the material trays one by one.

3. The product feeding conveyor line as described in claim 2, characterized in that: A fourth conveyor belt module is also provided between the first conveyor belt module and the second lifting module to transfer the material tray from the first conveyor belt module to the second lifting module; Furthermore, the second lifting module is provided with a pair of second forks. The end of the fourth conveyor belt module is located directly below the second forks, and the distance between the second forks is greater than the width of the fourth conveyor belt module. When the second forks descend to the bottom, they stop on both sides of the fourth conveyor belt module, and the material tray is transferred from the fourth conveyor belt module to the second forks.

4. The product feeding conveyor line as described in claim 1, characterized in that: There are two transfer stations, namely a first transfer station and a second transfer station. The first transfer station and the second transfer station are arranged sequentially between the first material tray transfer module and the second material tray transfer module. The next stage operation equipment takes the product from the first transfer station. The first material tray transfer module is equipped with two pairs of clamps, namely a first clamp and a second clamp, which are arranged sequentially. The first clamp is used to transfer the material tray containing products to the first transfer platform, and the second clamp is used to transfer the empty material tray from the first transfer platform to the second transfer platform.

5. A product feeding conveyor line as described in claim 1, characterized in that: The first lifting module is provided with a pair of first forks. An empty material tray is placed on the first forks. The end of the third conveyor belt module is located directly below the first forks, and the distance between the first forks is greater than the width of the third conveyor belt module. When the empty material tray is lowered to the bottom under the control of the first lifting module, the first forks stop on both sides of the third conveyor belt module, and the third conveyor belt module removes the empty material tray from the first forks.

6. The product feeding conveyor line as described in claim 1, characterized in that: The first product transfer station further includes a steering component, which is disposed between the third conveyor belt module and the second conveyor belt module to change the conveying direction of the material tray; The steering assembly includes a lifting module and a roller module. The roller module is installed above the lifting module. When the material tray is transferred to the roller module via the third conveyor belt module, the lifting module lifts upward. The roller module includes multiple rollers, a servo mechanism, and a synchronous pulley set. The multiple rollers are arranged parallel to each other along the direction of the second conveyor belt module, and the servo mechanism is connected to the multiple rollers through the synchronous pulley set. The multiple rollers rotate simultaneously under the control of the servo mechanism, thereby driving the material tray to move towards the second conveyor belt module.

7. A product feeding conveyor line as described in claim 1, characterized in that: The first product transfer platform is also equipped with a wide field of view module for photographing the product. The wide field of view module is installed above the transfer platform and includes a visual camera and a light source.

8. A product loading and unloading line as described in any one of claims 1-7, characterized in that: Also includes: The second product transfer station and the fifth conveyor belt module are connected at one end to the second product transfer station and at the other end to the final stage operation equipment, so as to transfer the processed products to the second product transfer station. The second product transfer platform includes: a second frame, a transverse module, a third lifting module, a fourth lifting module, a third material tray transfer module, a fourth material tray transfer module, and a first robotic arm. The second frame has upper and lower layers. The transverse module and the fourth material tray transfer module are installed on the lower layer of the second frame; the first robotic arm is installed on the upper layer of the second frame; the third lifting module and the fourth lifting module are located between the two layers of the frame; the third material tray transfer module is installed above the third lifting module and the fourth lifting module and is located between the third lifting module and the fourth lifting module. One end of the transverse module is connected to the second conveyor belt module, and the other end is connected to the third lifting module. The empty material tray is transferred to the third lifting module via the second conveyor belt module and the transverse module. The third material tray transfer module transfers the material tray from the third lifting module to the fourth lifting module; the end of the fifth conveyor belt module extends into the upper layer of the second frame, and the first robotic arm transfers the product from the fifth conveyor belt module to the material tray on the fourth lifting module; the end of the fourth material tray transfer module is connected to the bottom of the fourth lifting module, and the material tray containing the product is transported to the outside through the fourth material tray transfer module.

9. A product feeding conveyor line as described in claim 8, characterized in that: A sixth conveyor belt module is installed on the transverse module, and a seventh conveyor belt module is provided between the transverse module and the third lifting module. The empty material tray is transported to the transverse module via the second conveyor belt module, and then transferred to the third lifting module via the sixth and seventh conveyor belt modules.

10. A product feeding conveyor line as described in claim 9, characterized in that: The third lifting module is provided with a pair of third forks. The end of the seventh conveyor belt module is located directly below the third forks and the distance between the third forks is greater than the width of the seventh conveyor belt module. When the third forks descend to the bottom, they stop on both sides of the seventh conveyor belt module, and the material tray is transferred from the seventh conveyor belt module to the third forks. The fourth lifting module is provided with a pair of fourth forks. The end of the fourth material tray transfer module is located directly below the fourth forks, and the distance between the fourth forks is greater than the width of the fourth material tray transfer module. When the fourth forks descend to the bottom, they stop on both sides of the fourth material tray transfer module, and the fourth material tray transfer module moves the material tray off the fourth forks.

11. A display screen processing line, characterized in that, include: Display screen dispensing equipment and a product loading conveyor as described in any one of claims 1-10, wherein the product loading conveyor is disposed on one side of the display screen dispensing equipment for transporting the display screen to the display screen dispensing equipment; The display screen dispensing equipment is equipped with a second robotic arm, which is used to transfer the display screen from the product loading line to the display screen dispensing equipment.

12. A display screen processing line as described in claim 11, characterized in that: Also includes: The product unloading transfer line is located on the other side of the display screen dispensing equipment and connected to the next stage operation equipment, in order to transport the display screen that has completed the dispensing operation to the next stage operation equipment. The display screen dispensing equipment is equipped with a third robotic arm, which is used to transfer the display screen that has completed the dispensing operation from the display screen dispensing equipment to the product unloading flow line.

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