A loading and unloading device and method for a test machine

Abstract

The application provides a feeding and discharging device for a test machine, which comprises a carrying mechanism, at least four tray racks, a feeding platform for placing first products and a buffer platform for placing tested products, the at least four tray racks are respectively empty tray feeding racks, full tray feeding racks, qualified product discharging racks and unqualified product discharging racks, the trays on the tray racks are used for placing second products, the carrying mechanism is used for transferring the first products among the feeding platform, the buffer platform and the test machine, and is used for transferring the second products and the empty trays among the at least four tray racks, the buffer platform and the test machine. The application also provides a feeding and discharging method for stacking products in trays and single products respectively by using the device. The feeding and discharging device for the test machine has high compatibility and reasonable layout, facilitates manual feeding and discharging of the stacking trays and large-size products, reduces the travel range of the carrying mechanism and the motion travel during work, and improves the work efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic product testing equipment, and particularly relates to a feeding and discharging device for a testing machine and a feeding and discharging method. BACKGROUND

[0002] In the production process of electronic components, dozens or even hundreds of detections are needed. For plate-shaped electronic component products such as display panels and circuit boards, the transfer mode between test stations is various. Generally, small-size products are placed in trays, one or more products can be placed in a tray, and the trays can be stacked into several layers so that manual feeding and discharging of several layers of trays can be performed at the same time. Large-size products are placed in larger placing frames and transferred by a conveyor belt or stacked and transferred by a cart, and manual single-piece feeding and discharging is performed.

[0003] For testing equipment with purification level requirements, the existing testing equipment generally sets up corresponding machines according to the size of the products. The testing machine for stacking tray feeding cannot be used for single-piece feeding products, and vice versa. The single-piece feeding testing machine cannot be used for small products on the stacked tray. The compatibility is poor. As known, in the appearance test of electronic components, the difference between different products is the test program set by the testing machine. During testing, only the corresponding test program needs to be selected according to the product. Due to the poor compatibility of the equipment to the feeding and discharging mode, different detection equipment needs to be configured, increasing the cost of the equipment. For testing equipment with grading function, the carrying mechanism needs to shuttle between each feeding device. The arrangement of each feeding device directly affects the travel and carrying efficiency of the carrying mechanism. In addition, the testing machine generally needs tens of seconds or even several minutes to test a product. During this period, the carrying mechanism for feeding and discharging is in a state of stagnation. After the test is completed, the testing machine is in a standby state. The longer the standby time, the lower the work efficiency.

[0004] Therefore, it is necessary to provide a feeding and discharging device for a testing machine with high compatibility and high work efficiency. SUMMARY

[0005] The present application provides a feeding and discharging device for a testing machine with high compatibility, which can meet the feeding and discharging work of products in trays and single-piece products for testing, and provides a specific feeding and discharging method, which can improve the test frequency, speed up the test pace, and thus improve the test efficiency.

[0006] Other purposes and advantages of the present application can be further understood from the technical features disclosed in the present application.

[0007] To achieve the above partial or all purposes or other purposes, the test machine with the feeding and discharging device provided by the application comprises a carrying mechanism, at least four tray racks, a feeding platform for placing first products, and a buffer platform for placing tested products. The at least four tray racks are respectively empty tray infeed racks for placing stacked empty trays, full tray infeed racks for placing stacked full trays, qualified product outfeed racks, and unqualified product outfeed racks. The trays on the tray racks are used for placing second products, and the second products are different in size from the first products. The carrying mechanism is located at the front side of the test machine, the feeding platform is located at the front side of the carrying mechanism, the buffer platform is located between the carrying mechanism and the test machine, the empty tray infeed racks and the full tray infeed racks are located at the left side of the carrying mechanism, and the qualified product outfeed racks and the unqualified product outfeed racks are located at the right side of the carrying mechanism. The carrying mechanism is used for mutual transfer of the first products between the feeding platform, the buffer platform, and the test machine, and is used for mutual transfer of the second products and the empty trays between the at least four tray racks, the buffer platform, and the test machine.

[0008] In the production process of circuit boards or panels or other products, small-size products, i.e., the second products, are generally placed in trays for transfer between production and test stations. One tray may place one product, or two or more products. Large-size products, i.e., the first products, are transferred in single pieces.

[0009] When testing the products in the trays, the carrying mechanism takes the products to be tested from the trays on the full tray infeed racks for feeding. After the test is completed, the products are temporarily placed on the buffer platform. The carrying mechanism first feeds the products to be tested on the feeding platform, and then discharges the products on the buffer platform to the trays on the qualified product tray racks or the unqualified product tray racks according to the test results. When the top tray on the full tray infeed rack is empty, the empty tray is supplemented to the qualified product tray racks or the unqualified product tray racks according to the situation. If neither the qualified product tray racks nor the unqualified product tray racks need to be supplemented with an empty tray, the empty tray is placed on the empty tray infeed rack. When the trays on the qualified product tray racks or the unqualified product tray racks are full, the carrying mechanism supplements the trays on the empty tray infeed rack to the full qualified product tray racks or the full unqualified product tray racks.

[0010] When testing single-piece products, the products to be tested are placed on the feeding platform. The carrying mechanism feeds the products on the feeding platform. After the test is completed, the products are temporarily placed on the buffer platform. The carrying mechanism first feeds the products to be tested on the feeding platform, and then discharges the products on the buffer platform to the feeding platform.

[0011] The tray rack, the feeding platform, the buffer platform and the testing machine are all arranged in the grabbing range of the carrying mechanism. The working process of the carrying mechanism and the testing machine is debugged and set according to the actual situation of the products to be tested, so that the device can be compatible with the testing of products with different feeding modes, improve the compatibility and utilization rate of the testing device, save the cost of the device, avoid switching the machine, and improve the work efficiency. At the same time, the carrying mechanism is located in front of the testing machine, the feeding platform is located in front of the carrying mechanism, the buffer platform is located between the carrying mechanism and the testing machine, the empty tray feeding rack and the full tray feeding rack are located on the left side of the carrying mechanism, and the qualified product discharging rack and the unqualified product discharging rack are located on the right side of the carrying mechanism, which facilitates manual feeding and discharging of stacked trays and large-size products, reduces the travel range of the carrying mechanism and the motion stroke during work, reduces the overall size of the device and saves the working time. Because the buffer platform is close to the testing machine, the carrying mechanism can temporarily place the tested products on the buffer platform during work, first feeds the products to be tested, and then discharges the products on the buffer platform, which reduces the standby time of the testing machine and improves the testing efficiency.

[0012] Because the carrying mechanism needs to suck large-size products, small-size products and trays, in order to ensure the stability of suction, the carrying mechanism is provided with parallel first and second suction cups, the first and second suction cups are both provided with a first suction nozzle, and the first suction cup is provided with a hollow area in the middle; the second suction cup is connected with a driving member and shuttles in the hollow area under the action of the driving member. The first suction cup is used when sucking large-size products, and the second suction cup is located above the first suction cup at this time. The second suction cup is used when sucking small-size products, and the second suction cup shuttles to below the first suction cup under the action of the driving member. When sucking the suction cup, the appropriate suction cup is selected according to the size of the suction cup.

[0013] The tray rack comprises a top tray clamping mechanism, a lifting tray and a carrier for placing the stacked trays arranged in sequence from top to bottom, the carrier is installed on the rack, the lifting tray is used for clamping and lifting the stacked trays on the carrier to the height of the top tray clamping mechanism, and the top tray clamping mechanism is used for clamping and fixing the top tray, thereby facilitating the taking and placing of products by the carrying mechanism. The tray rack realizes automatic operation of the trays. When the products in the full tray feeding rack are all tested, the carrying mechanism moves the empty tray to the qualified product discharge rack and the unqualified product discharge rack as required, the lifting tray is lifted by one tray height, and the top tray clamping mechanism clamps and fixes the new top tray. Similarly, the full tray feeding rack, the qualified product discharge rack and the unqualified product discharge rack are lifted or lowered as required to adjust the position of the stacked trays during the working process. When the stacked trays in the full tray feeding rack and the empty tray feeding rack are lifted to a certain height, the carrier can be reloaded. Similarly, when the stacked trays on the qualified product discharge rack and the unqualified product discharge rack reach a certain number, the lifting tray is lowered to place the stacked trays on the carrier, thereby facilitating unloading.

[0014] The carrier is of a drawer type structure and is provided with a handle for pushing and pulling. During taking and placing of materials, the handle is pulled out of the carrier to facilitate the operation. The upper surface of the carrier is provided with a limiting block to limit the placement position of the stacked trays on the carrier, thereby preventing interference with the lifting tray and the top tray clamping mechanism. The lifting tray comprises two opposite clamping pieces. The clamping pieces move towards or away from each other under the drive of an X-direction movement mechanism and move up and down under the drive of a Z-direction movement mechanism. The top tray clamping mechanism comprises a bracket and a clamping block movably connected to the bracket. The clamping block moves towards or away from the top tray under the drive of an expansion piece to clamp or release the stacked trays.

[0015] The buffer platform is provided with a code reader on the side for reading product information. During operation, the carrying mechanism moves the product to be tested to the position below the code reader to read the code and obtain information, thereby facilitating production quality process control. The code reading can be performed when the previous product is tested on the testing machine. After code reading, the product is placed back to the original position. In this way, when the testing machine tests, the carrying mechanism completes the code reading and unloading work, thereby reasonably arranging the process and improving the work efficiency.

[0016] In order to adapt to the buffer placement of the first product and the second product, different sizes of adsorption zones are arranged on the buffer platform. The adsorption zones are composed of continuous and connected air grooves. The air grooves are provided with air holes for connecting air pipes. During operation, appropriate adsorption zones are selected according to the size of the products.

[0017] The feeding platform is provided with a locating boss for improving the product placement position accuracy and a sensor for detecting whether the product is placed in place. For large size testing, the test machine allows a small position error. The locating boss and the sensor ensure the position accuracy of the large size product on the feeding platform, eliminate the feedback and calculation work of image acquisition, save the equipment cost under the condition of meeting the use requirement, and improve the work efficiency.

[0018] The full tray feeding rack is provided with an image acquisition device above for acquiring the position information of the product to be tested in the top layer full tray and detecting the product appearance. The image acquisition device takes a photo of the product to be tested, not only acquires the position information of the product to be tested, but also facilitates the position compensation of the carrying mechanism to take the product, and can detect the product appearance, that is, judges whether the product has cracks, fragments, corner defects and other defects according to the shooting image. When it is determined that there are such defects, the equipment alarms, and personnel manually eliminate them, and do not continue to feed. For single product feeding, cracks, fragments, corner defects and other defects are determined by manual visual inspection.

[0019] The method for feeding and discharging the products in the stacked tray by using the feeding and discharging equipment of the test machine includes the following steps:

[0020] S1, the image acquisition device takes a photo of the product to be tested in the uppermost tray of the full tray feeding rack for positioning and detects the product appearance;

[0021] S2, the carrying mechanism takes the product to be tested according to the product position information, moves to the lower part of the code reader for code reading, and then returns to the original position in the uppermost full tray after the code reading is completed;

[0022] S3, after the product testing in the test machine is completed, the carrying mechanism takes out the tested product and places it on the buffer platform;

[0023] S4, the carrying mechanism takes out the product after code reading from the uppermost full tray and places it in the test machine for feeding;

[0024] S5, the carrying mechanism discharges the product on the buffer platform to the tray in the tray rack of the qualified product or the defective product according to the detection result.

[0025] The method for feeding and discharging the single product by using the feeding and discharging equipment of the test machine includes the following steps:

[0026] S1, the product to be tested is placed on the feeding platform by manual operation, so that the sensor senses the product, and the product appearance is visually detected;

[0027] S2, the carrying mechanism takes the product to be tested, moves to the lower part of the code reader for code reading, and then returns to the feeding platform after the code reading is completed;

[0028] S3, after product testing in the test machine is completed, the conveying mechanism takes out the tested product and places it on the buffer platform;

[0029] S4, the conveying mechanism places the product to be tested after reading the code on the feeding platform into the test machine for feeding;

[0030] S5, the conveying mechanism moves the product on the buffer platform to the feeding platform;

[0031] S6, the product on the feeding platform is unloaded according to the test results.

[0032] Compared with the prior art, the beneficial effects of the present application mainly include:

[0033] 1. The feeding and discharging equipment for the test machine provided by the present application integrates the tray rack and the feeding platform together, so that the equipment can meet the feeding and discharging work of the products in the tray and the single product for testing, improve the compatibility and utilization rate of the test machine, save the equipment cost, avoid switching the machine, and improve the work efficiency;

[0034] 2. The feeding and discharging equipment for the test machine provided by the present application, the feeding platform is located in front of the conveying mechanism, the buffer platform is located between the conveying mechanism and the test machine, the empty tray feeding rack and the full tray feeding rack are located on the left side of the conveying mechanism, and the qualified product discharging rack and the unqualified product discharging rack are located on the right side of the conveying mechanism, which facilitates manual feeding and discharging of the stacked tray and large-size products, reduces the travel range of the conveying mechanism and the motion travel in work, and reduces the overall size of the equipment and saves the working time;

[0035] 3. The feeding and discharging equipment for the test machine provided by the present application, the first suction cup and the second suction cup are arranged in parallel on the conveying mechanism, the second suction cup can ascend and descend in the hollow area of the first suction cup, and the appropriate suction cup can be selected according to the size of the suction object to ensure the stability of suction;

[0036] 4. The feeding and discharging equipment and method for the test machine provided by the present application, by arranging the buffer platform, the mechanical hand can complete the code reading work of the next product to be tested and the discharging work of the last tested product while the test machine is testing, the process is reasonably arranged, and the work efficiency is improved.

[0037] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the preferred embodiments are described below, and the detailed description is as follows with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0039] Figure 1 The structural schematic diagram of the feeding and discharging equipment for the test machine in the first embodiment of the present application is shown in the figure.

[0040] Figure 2 The structural schematic diagram of the feeding and discharging equipment for the test machine in the first embodiment of the present application is shown in the figure. Figure 1 The structural schematic diagram of the feeding and discharging equipment for the test machine in the first embodiment of the present application is shown in the figure.

[0041] Figure 3 The structural schematic diagram of the feeding and discharging equipment for the test machine in the first embodiment of the present application is shown in the figure. Figure 1 The schematic diagram of the track range of the carrying mechanism and the feeding and discharging direction of the tray rack in the first embodiment of the present application is shown in the figure.

[0042] Figure 4 The schematic diagram of the track range of the carrying mechanism and the feeding and discharging direction of the tray rack in the first embodiment of the present application is shown in the figure.

[0043] Figure 5 The schematic diagram of the track range of the carrying mechanism and the feeding and discharging direction of the tray rack in the first embodiment of the present application is shown in the figure.

[0044] Figure 6 The structural schematic diagram of the carrying mechanism in the first embodiment of the present application is shown in the figure. Figure 1 The structural schematic diagram of the carrying mechanism in the first embodiment of the present application is shown in the figure.

[0045] Figure 7 The enlarged view of A in the first embodiment of the present application is shown in the figure. Figure 6 The enlarged view of A in the first embodiment of the present application is shown in the figure. The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure.

[0046] The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 8 The enlarged view of B in the first embodiment of the present application is shown in the figure. Figure 1 The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure.

[0047] The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 9 The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 8 The enlarged view of B in the first embodiment of the present application is shown in the figure. The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure.

[0048] The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 10 The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 1 The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure.

[0049] The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 11 The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 2 The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure.

[0050] The structural schematic diagram of the tray rack in the first embodiment of the present application is shown in the figure. Figure 12 The top view of the buffer platform in the first embodiment of the present application is shown in the figure. Figure 11 The top view of the buffer platform in the first embodiment of the present application is shown in the figure. The top view of the buffer platform in the first embodiment of the present application is shown in the figure.

[0051] The top view of the buffer platform in the first embodiment of the present application is shown in the figure. Figure 13The feeding and discharging method of the test machine table of the second embodiment of the present application;

[0052] Figure 14 The feeding and discharging method of the test machine table of the third embodiment of the present application.

[0053] Reference signs: 1-frame, 2-conveying mechanism, 20-mounting plate, 21-first suction cup, 22-second suction cup, 23-driving member, 24-first suction nozzle, 25-sliding block, 3a-empty tray feeding rack, 3b-full tray feeding rack, 3c-good product discharging rack, 3d-defective product discharging rack, 31-tray clamping mechanism, 310-bracket, 311-clamping block, 3110-telescopic member, 312-positioning block, 313-adjusting mechanism, 3131-mounting table, 3132-sliding rail, 3133-bar-shaped slot, 3134-bolt mounting hole, 3135-scale, 32-lifting support, 321-X-direction movement mechanism, 322-Z-direction movement mechanism, 33-carrier, 331-handle, 332-limiting block, 4-discharging platform, 41-positioning boss, 42-inductor, 43-second suction nozzle, 44-notch, 5-caching platform, 51-gas distribution valve, 52-first gas groove, 521-first gas hole, 53-second gas groove, 531-second gas hole, 6-image acquisition device, 7-code reader. DETAILED DESCRIPTION

[0054] The foregoing and other technical contents, features and effects of the present application will be clearly presented in the following detailed description of a preferred embodiment in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only the directions of the accompanying drawings. Therefore, the directional terms used are used for explanation, not for limitation of the present application.

[0055] Embodiment I:

[0056] In combination Figure 1 And Figure 2The loading and unloading equipment for the testing machine shown in this embodiment includes a conveying mechanism 2, four pallet racks 3a, 3b, 3c, and 3d, a feeding platform 4 for placing the first product, and a buffer platform 5 for placing the tested products. The four pallet racks 3a, 3b, 3c, and 3d are respectively an empty pallet feeding rack 3a for placing stacked empty pallets, a full pallet feeding rack 3b for placing stacked full pallets, a qualified product unloading rack 3c, and a defective product unloading rack 3d. The pallets on the pallet racks are used to place the second product, which has a different size from the first product. Mechanism 2 is located in front of the testing machine, the unloading platform 4 is located in front of the transport mechanism 2, the buffer platform 5 is located between the transport mechanism 2 and the testing machine, the empty tray loading rack 3a and the full tray loading rack 3b are located on the left side of the transport mechanism 2, and the qualified product unloading rack 3c and the defective product unloading rack 3d are located on the right side of the transport mechanism 2. The transport mechanism 2 is used for the mutual transfer of the first product between the unloading platform 4, the buffer platform 5 and the testing machine, and for the mutual transfer of the second product and the empty tray between the four tray racks 3a, 3b, 3c, 3d, the buffer platform 5 and the testing machine. In other embodiments, if space permits, the number of tray racks can be increased as a supplement.

[0057] In this embodiment, the conveying mechanism 2 is a robotic arm; in other embodiments, it can be an integrated device such as other linear motion mechanisms, turntables, or suction cups. Since the conveying mechanism 2 primarily picks up materials from the full-pan feed rack 3b and places them onto the qualified product discharge rack 3c, to further conserve the travel distance of the conveying mechanism 2, the full-pan feed rack 3b and the qualified product discharge rack 3c are positioned close to the testing machine. A barcode reader 7 for reading product information is provided on the side of the buffer platform 5 closest to the testing machine.

[0058] like Figure 3 As shown in the figure, the arc represents the trajectory range of the handling mechanism 2, and the arrows indicate the material handling directions of pallet racks 3a, 3b, 3c, and 3d.

[0059] Figure 4 The diagram shows the state when the pallet racks 3a, 3b, 3c, 3d, the loading platform 4, and the buffer platform 5 are arranged in a line on one side of the handling mechanism 2. It can be seen that the equipment wastes a lot of space and has low space utilization under this arrangement. The arm of the handling mechanism 2 needs to be lengthened, the trajectory is longer, and the time required for loading and unloading will also increase accordingly. In comparison, the advantage of this embodiment is that it can make the equipment space smaller, save loading and unloading time, and improve work efficiency.

[0060] Figure 5The diagram shows pallet racks 3a, 3b, 3c, 3d, and the loading platform 4 and buffer platform 5 arranged in a circle around the handling mechanism 2. It can be seen that under this arrangement, the reach of the handling mechanism 2 and the floor space of the equipment need to be increased slightly. At the same time, the loading and unloading directions of pallet racks 3a, 3b, 3c, and 3d are all different, making it inconvenient for operators to pick up and place pallet racks. In comparison, the advantages of this embodiment are mainly that it is convenient for manual loading and unloading of stacked pallets, reducing labor intensity, and secondly, the loading and unloading trajectory of the handling mechanism 2 is small, improving work efficiency.

[0061] In this embodiment, the testing machine is used for testing circuit boards. To prevent external interference, the frame 1 is enclosed with black aluminum composite panels, and safety doors for easy loading and unloading are provided on both sides and the front of the frame 1.

[0062] For small-sized products, i.e., the second product, they are generally transferred via pallets. During testing, the handling mechanism 2 picks up the product from the full pallet feeder 3b and transfers it to the testing machine. After testing, it is temporarily placed on the buffer platform 5. The handling mechanism 2 then reloads the product to reduce the waiting time of the testing machine. Afterward, based on the test results, the product is unloaded from the buffer platform 5 to the qualified product unloading rack 3c or the defective product unloading rack 3d. When the pallets on the qualified product unloading rack 3c or the defective product unloading rack 3d are full of products, the handling mechanism 2 replenishes the empty pallets on the empty pallet feeder 3a. After the top product of the full pallet feeder 3b has been tested, the empty pallets are replenished to the qualified product unloading rack 3c or the defective product unloading rack 3d as needed, or temporarily placed on the empty pallet feeder 3a.

[0063] For large-sized products, i.e., the first product, manual loading is generally used. During testing, the manual person places the product on the loading platform 4, and the conveying mechanism 2 picks up the product from the loading platform 4 and transfers it to the testing machine. After the test is completed, the product is temporarily placed on the buffer platform 5. The conveying mechanism 2 first loads the product to be tested on the loading platform 4, and then unloads the product from the buffer platform 5 back onto the loading platform 4. The personnel then sort and unload the product to the designated location according to the test results.

[0064] The handling mechanism 2 needs to transfer large-sized products, small-sized products, and pallets. To ensure stable handling of objects of different sizes, it combines... Figure 6 and Figure 7As shown, the conveying mechanism 2 is provided with a first suction cup 21 and a second suction cup 22 in parallel, the first suction cup 21 and the second suction cup 22 are both provided with a first suction nozzle 24, the first suction cup 21 is provided with a hollow area in the middle, the second suction cup 22 is connected with a driving member 23, and under the action of the driving member 23, the second suction cup 22 shuttles in the hollow area. In this embodiment, the driving member 23 is a pneumatic cylinder, and in other embodiments, it can also be other linear motion mechanisms or telescopic mechanisms. The first suction nozzles 24 are respectively installed at the corners of the first suction cup 21 and the second suction cup 22. When sucking large-size products, the first suction cup 21 is used, and at this time the pneumatic cylinder drives the second suction cup 22 to be located above the first suction cup 21. When sucking small-size products, the pneumatic cylinder drives the second suction cup 22 to move downward through the through hole and be located below the first suction cup 21. When sucking the tray, the first suction cup 21 or the second suction cup 22 is selected according to the size of the tray.

[0065] In this embodiment, the first suction cup 21 is provided with four first suction nozzles 24, and the second suction cup 22 is provided with two first suction nozzles 24 due to its small size. In other embodiments, the first suction nozzles 24 can be arranged as needed according to the size of the sucked object.

[0066] As shown in the figure, Figure 7 The first suction cup 21 and the second suction cup 22 are both provided with a sliding groove, the first suction nozzle 24 is installed on a sliding block 25, and the sliding block 25 is slidingly connected in the sliding groove. In actual production, the installation position of the first suction nozzle 24 is adjusted before testing according to the specific size of the product, further ensuring the firmness of suction, and a scale is provided on the edge of the sliding groove along the sliding direction of the sliding block 25, which is convenient for intuitive observation of the adjustment distance.

[0067] In order to realize the automatic feeding and discharging of small-size products, as shown in the figure, Figure 8 The tray rack includes a top disc clamping mechanism 31, a lifting platform 32 and a loading platform 33 for placing stacked trays arranged in sequence from top to bottom. The loading platform 33 is installed on the rack 1, the lifting platform 32 is used to lift the stacked trays from the bottom of the bottommost tray and drive the stacked trays to rise, so that the top tray reaches the height of the top disc clamping mechanism 31, and the top disc clamping mechanism 31 is used to clamp and fix the top tray.

[0068] Specifically, the carrier 33 is of a drawer type structure, and is provided with a handle 331 for pushing and pulling. The upper surface of the carrier 33 is provided with a limiting block 332 for positioning the stacked trays, and a sensor is arranged at the other end of the limiting block 332. The lifting carrier 32 comprises two facing clamping members which are driven by an X-direction movement mechanism 321 to move towards or away from each other, and are driven by a Z-direction movement mechanism 322 to move up and down. The top tray clamping mechanism 31 comprises a bracket 310 and clamping blocks 311 movably connected to the bracket 310, and the clamping blocks 311 are driven by a telescopic member 3110 to move towards or away from the top tray. At least one side of the clamping blocks 311 of one group of adjacent edges of the bracket 310 is provided with a locating block 312, and both sides in the embodiment. The clamping blocks 311 of the other group of adjacent edges of the bracket 310 are provided with an adjusting mechanism 313 for adjusting the initial installation position. The locating block 312 can be a square structure or a cylindrical structure, and in the embodiment, the square structure and the cylindrical structure are respectively used for the two groups of adjacent edges.

[0069] As shown in Figure 9 , the adjusting mechanism 313 comprises a slide rail 3132 mounted on the bracket 310, a mounting table 3131 moving along the slide rail 3132, and a bolt (not shown in the figure) for fixing the mounting position of the mounting table 3131. The telescopic member 3130 in the embodiment is a pneumatic cylinder mounted on the mounting table 3131 and located below the bracket 310. A strip-shaped slot 3133 is arranged on the mounting plate 310, and the mounting table 3131 is provided with a bolt mounting hole 3134 at the corresponding position. A scale 3135 is arranged on one side of the slide rail 3132, and the scale 3135 is marked according to the product size after adjustment, so that the product size can be directly adjusted without calculation. When adjusting, the mounting table 3131 can be moved along the slide rail 3132 by loosening the screw.

[0070] When working, for the full tray feeding rack 3b, the handle 331 is pulled out of the carrier 33, the stacked trays are placed on the carrier 33, and are positioned by the limiting block 332, so that the sensor can sense the stacked trays. When the product detection on the lifting carrier 32 is completed, the handling mechanism 2 takes out the last empty tray, the lifting carrier 32 is lowered, lifts the stacked trays on the carrier 33 and rises, so that the top tray reaches the height of the top tray clamping mechanism 31 and touches the locating block 312. The clamping block 311 is clamped to the top tray under the drive of the telescopic member 3110, and the full tray is replenished. After the product detection in the top tray is completed, the clamping block 311 is loosened, the handling mechanism 2 takes out the empty tray, the lifting carrier 32 rises by one tray height, and the clamping block 311 is clamped again.

[0071] The empty tray feeding rack 3a and the full tray feeding rack 3b have the same working mode.

[0072] For the qualified product discharge rack 3c, the tested qualified products are placed on the top tray by the carrying mechanism 2, when the top tray is full, the lifting platform 32 is lowered by one tray height, the carrying mechanism 2 takes the empty tray from the empty tray feeding rack 3a to the qualified product discharge rack 3c, when the set stacking number is reached, the lifting platform 32 is lowered to place the stacked tray on the loading platform 33 and then is raised, the carrying mechanism 2 takes the empty tray from the full tray feeding rack 3b to the top tray clamping mechanism 31.

[0073] The unqualified product discharge rack 3d has the same working mode as the qualified product discharge rack 3c.

[0074] In combination Figure 2 As shown in the figure, the image acquisition device 6 is arranged above the full tray feeding rack 3b, which is used to take pictures of the products in the full tray, obtain the position information of the products to be tested and detect the appearance of the products. In this embodiment, in order to save space, the image acquisition device 6 is installed on the rack 1 at the top of the full tray feeding rack 3b, and in other embodiments, it can also be installed at other positions. The image acquisition device 6 mainly detects whether the products have defects such as cracks, broken pieces and missing corners, and in addition, the carrying mechanism 2 makes position compensation according to the feedback position information, so that the carrying mechanism 2 can put the products into the test platform to determine the position, which is convenient for accurate and efficient detection.

[0075] For large-size products, such as Figure 10 As shown in the figure, the discharge platform 4 is provided with a positioning convex platform 41 for improving the positioning accuracy of the products and a sensor 42 for detecting whether the products are placed in place. The positioning convex platform 41 is L-shaped, which is used as a reference for positioning the products, and the sensor 42 is arranged at the end of the two sides of the positioning convex platform 41, which prevents the products from being placed off-center and ensures the positioning accuracy of the carrying mechanism 2 when loading the products into the test platform. A second suction nozzle 43 is arranged on the discharge platform 4, which is used to adsorb and fix the products to prevent accidental damage. According to the different sizes of large-size products, different adsorption areas composed of different second suction nozzles 43 are arranged on the discharge platform 4, and a gas distribution valve is arranged to control the negative pressure generated by the second suction nozzles 43 in the adsorption area according to the needs. A notch 44 is also arranged on the discharge platform 4 to facilitate manual removal of the products.

[0076] Since the large-size products are manually loaded and unloaded, the appearance defects such as cracks, broken pieces and missing corners of the large-size products are detected by manual visual inspection. In other embodiments, image acquisition devices can also be added as needed to complete the appearance detection.

[0077] In combination Figure 11 and Figure 12As shown, the buffer platform 5 is also provided with adsorption areas of different sizes, which are composed of continuous and connected air grooves, and air holes are arranged in the air grooves for connecting air pipes. Specifically, the large adsorption area is composed of a first air groove 52, and a first air hole 521 for connecting an air pipe is arranged in the first air groove 52; the small adsorption area is composed of a second air groove 53, and a second air hole 531 for connecting an air pipe is arranged in the second air groove 53; and the air distribution valve 51 controls the first air groove 52 or the second air groove 53 to generate negative pressure according to the size of the product to be placed. In order to save space, the second air groove 53 is located inside the enclosed area of the first air groove 52 in this embodiment.

[0078] Embodiment two:

[0079] As shown in the drawings, the embodiment provides a method for feeding and discharging products in a tray by using the feeding and discharging equipment of the test machine, which comprises the following steps: Figure 13

[0080] S1, the image acquisition device 6 photographs and positions the products to be tested in the uppermost full tray, detects the appearance of the products, and judges whether the products have defects such as cracks, broken pieces, and missing corners. Since such defects are rare, when it is determined that such defects exist, the equipment alarms, and personnel manually eliminate them, and the feeding is not continued;

[0081] S2, the conveying mechanism 2 takes the products to be tested according to the product position information, moves to the lower part of the code reader 7 to read the code, and after the code reading is completed, returns to the original position in the uppermost full tray. The code marking product information is located at one corner of the product. Since the placement direction is uncertain, if the code is not read when reading the code, the conveying mechanism 2 rotates the product by 180 degrees to ensure that the product information is read;

[0082] S3, after the product testing in the test machine is completed, the conveying mechanism 2 takes out the tested product and places it on the buffer platform 5. Since the buffer platform 5 is located between the conveying mechanism 2 and the test machine, this step takes less time;

[0083] S4, the conveying mechanism 2 takes out the product after code reading from the uppermost full tray and places it in the test machine for feeding. Since the conveying mechanism 2 compensates according to the position information when taking the product to read the code, the product placement angle has been adjusted to the required placement angle for testing when it is returned to the original position. Therefore, it is not necessary to take a photograph to obtain the position information before this step;

[0084] S5, the conveying mechanism 2 discharges the product on the buffer platform 5 to the tray in the tray rack of the qualified product or the defective product according to the test result.

[0085] ​In the above method, the carrying mechanism 2 temporarily places the tested product on the buffer platform 5, and immediately feeds the next product to be tested, thereby saving the standby time of the testing machine; while the testing machine is testing, the carrying mechanism 2 performs the code reading of the next product to be tested and the unloading of the last tested product, thereby reasonably utilizing the testing time, improving the testing frequency, accelerating the testing pace, and thus improving the testing efficiency.

[0086] Embodiment Three

[0087] As shown in Figure 14 , the embodiment provides a method for feeding and unloading large-size products by using the feeding and unloading equipment of the above testing machine, which comprises the following steps:

[0088] S1, manually placing the product to be tested on the feeding platform 4, so that the inductor 42 senses the product, and visually detecting the appearance of the product to determine whether the product has defects such as cracks, broken pieces, and missing corners; when such defects exist, the personnel automatically exclude them and do not continue to feed;

[0089] S2, the carrying mechanism 2 takes the product to be tested, moves to the lower part of the code reader 7 to read the code, and then places it back on the feeding platform 4; similarly, due to the uncertain placement direction, if the code is not read during code reading, the carrying mechanism 2 rotates the product by 180 degrees to ensure that the product information is read;

[0090] S3, after the product testing in the testing machine is completed, the carrying mechanism 2 takes out the tested product and places it on the buffer platform 5;

[0091] S4, the carrying mechanism 2 places the product to be tested after code reading on the feeding platform 4 into the testing machine for feeding; since the feeding platform 4 has the positioning boss 41 and the inductor 42, the placement accuracy of the product is high, and the testing machine allows a small amount of positional error for testing large-size products, so that the position alignment is not required;

[0092] S5, the carrying mechanism 2 moves the product on the buffer platform 5 to the feeding platform 4;

[0093] S6, manually unloading the product on the feeding platform 4 according to the test results.

[0094] In the above method, the advantages of manual feeding and unloading are used to visually detect the appearance of the product, thereby saving equipment costs and reducing equipment size; at the same time, the same advantages of reasonably utilizing the testing time, improving the testing frequency, accelerating the testing pace, and thus improving the testing efficiency as in Embodiment Two are also provided.

[0095] The feeding and discharging equipment and the feeding and discharging method for the test platform are described in detail above, and the structure, method and working principle of the present application are described by using specific examples in this paper. The above examples are only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A loading and unloading apparatus for a test machine, characterized by, The device comprises a carrying mechanism (2), at least four tray racks (3a, 3b, 3c, 3d), a feeding platform (4) for placing first products, and a buffer platform (5) for placing tested products. The at least four tray racks (3a, 3b, 3c, 3d) are respectively empty tray feeding racks (3a) for placing stacked empty trays, full tray feeding racks (3b) for placing stacked full trays, qualified product output racks (3c), and unqualified product output racks (3d). The trays on the tray racks are used for placing second products, which are different in size from the first products, and the first products are larger in size than the second products. The carrying mechanism (2) is located at the front side of a testing machine. The feeding platform (4) is located at the front side of the carrying mechanism (2). The buffer platform (5) is located between the carrying mechanism (2) and the testing machine and is used for temporarily storing products that have completed testing during testing. The empty tray feeding racks (3a) and the full tray feeding racks (3b) are located at the left side of the carrying mechanism (2). The qualified product output racks (3c) and the unqualified product output racks (3d) are located at the right side of the carrying mechanism (2). The carrying mechanism (2) is used for transferring the first products among the feeding platform (4), the buffer platform (5), and the testing machine, and is used for transferring the second products and empty trays among the at least four tray racks (3a, 3b, 3c, 3d), the buffer platform (5), and the testing machine. The buffer platform (5) is provided with a code reader (7) on the side for reading product information. An image acquisition device (6) is provided above the full tray feeding racks (3b) for obtaining position information of products to be tested in the top layer of full trays and detecting the appearance of the products.

2. The loading and unloading apparatus for a test machine according to claim 1, wherein A first suction cup (21) and a second suction cup (22) are provided on the carrying mechanism (2) in parallel. First suction nozzles (24) are mounted on the first suction cup (21) and the second suction cup (22). A hollow area is provided in the middle of the first suction cup (21). The second suction cup (22) is connected with a driving member (23) and shuttles in the hollow area under the action of the driving member (23).

3. The loading and unloading apparatus for a test machine according to claim 1, wherein The tray racks (3a, 3b, 3c, 3d) comprise, from top to bottom, a top tray clamping mechanism (31), a lifting support (32), and a carrier (33) for placing stacked trays. The carrier (33) is mounted on a rack (1). The lifting support (32) is used for clamping and lifting the stacked trays on the carrier (33) and making the top tray reach the height of the top tray clamping mechanism (31). The top tray clamping mechanism (31) is used for clamping and fixing the top tray.

4. The loading and unloading apparatus for a test machine according to claim 3, wherein The carrier (33) is of a drawer type structure, provided with a handle (331) for pushing and pulling, and the upper surface of the carrier (33) is provided with a limiting block (332); the lifting platform (32) comprises two opposite clamping members which move towards or away from each other under the drive of an X-direction movement mechanism (321) and move up and down under the drive of a Z-direction movement mechanism; the top disc clamping mechanism (31) comprises a support (310) and a clamping block (311) movably connected to the support (310), and the clamping block (311) moves towards or away from the top layer of the tray under the drive of an expansion member (3110).

5. The loading and unloading apparatus for a test machine according to claim 1, wherein The buffer platform (5) is provided with different size adsorption zones, and the adsorption zones are composed of continuous and connected air grooves, and the air grooves are provided with air holes for connecting air pipes.

6. The loading and unloading apparatus for a test machine according to claim 1, wherein The feeding platform (4) is provided with a locating boss (41) for improving the positioning accuracy of the product and a sensor (42) for detecting whether the product is placed in place.

7. A loading and unloading method for the loading and unloading apparatus for the test machine of claim 1, for loading and unloading products in the stacking tray, characterized by, The method comprises the following steps: S1, an image acquisition device (6) photographs and positions the product to be tested in the uppermost tray of the full tray feeding rack (3b) and detects the appearance of the product; S2, a carrying mechanism (2) takes the product to be tested according to the product position information, moves to the lower part of a code reader (7) to read the code, and then places the product back to the original position in the uppermost full tray; S3, after the product test in the test machine is completed, the carrying mechanism (2) takes out the tested product and places it on the buffer platform (5); S4, the carrying mechanism (2) takes the product with the read code from the uppermost full tray and places it in the test machine for feeding; S5, the carrying mechanism (2) discharges the product on the buffer platform (5) to the tray in the tray rack (3) according to the test result.

8. A loading and unloading method for the loading and unloading apparatus for the test machine of claim 1, for loading and unloading a single wafer product, characterized by, The method comprises the following steps: S1, a person places the product to be tested on the feeding platform (4), so that the sensor (42) senses the product, and visually detects the appearance of the product; S2, a carrying mechanism (2) takes the product to be tested, moves to the lower part of a code reader (7) to read the code, and then places the product back to the feeding platform (4); S3, after the product test in the test machine is completed, the carrying mechanism (2) takes out the tested product and places it on the buffer platform (5); S4, the carrying mechanism (2) takes the product with the read code from the feeding platform (4) and places it in the test machine for feeding; S5, the carrying mechanism (2) moves the product on the buffer platform (5) to the feeding platform (4); S6, a person discharges the product on the feeding platform (4) according to the test result.

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