A miniature loudspeaker automatic testing machine and method

Abstract

This invention provides an automatic testing machine for miniature loudspeakers, comprising: a frame; a first lateral moving mechanism, disposed on the frame, for conveying a tray along a first direction to sequentially transport products from a storage station for products to be tested through a picking station, an idle tray placement station, a dispensing station, and a storage station for tested products, wherein the first direction is lateral; a picking and dispensing mechanism, disposed on the frame, for removing products to be tested from the tray located on the first lateral moving mechanism or placing tested products back onto the tray located on the first lateral moving mechanism; and a testing box, disposed on the frame, for testing the products to be tested removed from the tray on the first lateral moving mechanism by the picking and dispensing mechanism. This automatic testing machine enables automatic testing of loudspeakers.

Description

Technical Field

[0001] This invention relates to the field of loudspeaker manufacturing, and more particularly to an automatic testing machine and method for miniature loudspeakers. Background Technology

[0002] During the production of loudspeakers, before the speakers are assembled, they need to be tested to determine whether the speakers are up to standard.

[0003] Chinese patent application CN114226259A discloses an automatic testing machine for miniature loudspeakers. Its working principle is as follows: a feeding device moves the loudspeakers to a testing platform for testing; the testing device tests the loudspeakers on the platform; and based on the test results, a sorting and unloading device transports the loudspeakers to different unloading trays. However, the feeding device can only hold one tray at a time. When all the loudspeakers on a tray are removed, the tray needs to be replaced manually or with external equipment. The same applies to the sorting and unloading device; after each tray is full, it needs to be replaced manually or with external equipment. Replacing trays takes considerable time, and if done manually, it increases labor costs. Summary of the Invention

[0004] The main objective of this invention is to provide a miniature loudspeaker automatic testing machine that can place multiple trays containing products to be tested at one time, automatically move trays that have had their products removed to the unloading position to receive the products that have completed testing, and automatically stack the trays.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic testing machine for miniature loudspeakers, characterized in that it comprises:

[0006] frame;

[0007] The first lateral moving mechanism is mounted on the frame and is used to convey the material tray along the first direction to convey the material tray from the storage station of the product to be tested through the material picking station, the idle material tray placement station, the material dispensing station and the storage station of the tested product in sequence. The first direction is lateral.

[0008] The material handling mechanism is mounted on the frame and is used to remove the product to be inspected from the tray located on the first transverse moving mechanism or to put the inspected product back onto the tray located on the first transverse moving mechanism.

[0009] The testing box, mounted on the frame, is used to test the products to be tested that are taken out of the tray on the first transverse moving mechanism by the material handling mechanism.

[0010] Preferably, the tray includes:

[0011] When viewed from above, the tray body is rectangular. It has multiple upward-facing placement slots for placing products. Each side wall of the tray body has two clearance slots. The lower end of the clearance slots is blocked, and the upper end is connected to the outside, with the outward-facing side also connected to the outside. The clearance slots on opposite side walls of the tray body are aligned. And / or, a raised edge facing outward is provided around the bottom edge of the tray body 1.

[0012] Preferably, the first lateral movement mechanism includes:

[0013] The support frame is mounted on the rack;

[0014] Two support plates are supported on the support frame. Each support plate extends along a first direction and the two support plates are arranged along a second direction, which is longitudinal. Four first corner plates are set on the support plates and at the storage station of the product to be tested. The space enclosed by the four first corner plates can just accommodate one material tray in the horizontal direction and can accommodate multiple material trays in the vertical direction.

[0015] Preferably, a mounting block is provided on the support plate at the position corresponding to each first corner plate. In the first direction, the mounting blocks on the same support plate are aligned one by one. In the second direction, the four mounting blocks are aligned in pairs. In the second direction, the distance between two mutually aligned mounting blocks is equal to or greater than the size of the material tray in the second direction. The first corner plate is supported on the corresponding mounting block by the mounting plate. The distance between the upper surface of the mounting block and the support plate is greater than the thickness of the material tray.

[0016] Preferably, the first lateral moving mechanism further includes a tray driving assembly for driving the tray to move up and down or along a first direction; the tray driving assembly includes:

[0017] The transfer plate is rectangular. Its dimension in the first direction is smaller than that of the material tray in the first direction, and its dimension in the second direction is smaller than the distance between the two support plates and smaller than the dimension of the material tray in the second direction. When viewed from above, the transfer plate is located between the two support plates and can move up and down.

[0018] Preferably, a first blocking plate is provided on each of the two support plates and at the storage station corresponding to the product to be tested. The distance between the lower surface of the first blocking plate and the upper surface of the support plate is greater than the thickness of the tray. The first blocking plate can move back and forth along the second direction to insert into the corresponding clearance groove of the tray.

[0019] Preferably, clamping blocks are provided on both sides of each transfer plate along the first direction, and the clamping blocks can be inserted into the corresponding clearance grooves of the trays located on the transfer plate to press the trays onto the transfer plate.

[0020] Preferably, the tray drive assembly further includes:

[0021] The first mounting bracket is supported on two support plates and can move back and forth along a first direction;

[0022] The first lifting plate is movable up and down on the first mounting frame, and the material transfer plate is supported on the first lifting plate.

[0023] Preferably, the material handling mechanism includes a first longitudinal moving mechanism, which includes:

[0024] The first longitudinal module is supported on the frame. The output end of the first longitudinal module moves back and forth along the second direction, spanning two support plates and located at the material handling station.

[0025] The first suction nozzle is disposed on the output end of the first vertical module and is capable of moving up and down relative to the output end of the first vertical module and moving along a first direction.

[0026] Preferably, the material handling mechanism further includes:

[0027] Both the second and fourth longitudinal moving mechanisms include a placement plate, which can move back and forth along the second direction. An upward-opening feeding groove is provided on the placement plate. The feeding groove of the second longitudinal moving mechanism is used to place the product moved by the first suction nozzle. A detection groove is provided on the detection box for placing the product to be detected.

[0028] The second lateral moving mechanism is used to move the product to be inspected on the second longitudinal moving mechanism to the inspection slot and to move the product that has completed inspection to the inspection slot of the fourth longitudinal moving mechanism.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1) The automatic testing machine of the present invention can realize automatic feeding, testing and unloading of products to be tested;

[0031] 2) This invention can automatically remove multiple trays at the product storage station, automatically stack and remove multiple trays at the idle tray placement station, and automatically stack trays at the product storage station. In actual production, multiple trays containing products to be tested can be placed at the product storage station at one time. Compared to the need for manual intervention to complete the testing of each tray, this invention improves production efficiency and reduces labor costs. Attached Figure Description

[0032] Figure 1 and Figure 2This is a perspective view of a preferred embodiment of the present invention;

[0033] Figure 3 This is a structural diagram of the material tray;

[0034] Figure 4 and Figure 5 This is a structural diagram of the first lateral movement mechanism;

[0035] Figure 6 This is a magnified view of point A;

[0036] Figure 7 This is a magnified view of point B;

[0037] Figure 8 and Figure 9 This is a structural diagram of the tray drive assembly;

[0038] Figure 10 This is a structural diagram of the first longitudinal moving mechanism;

[0039] Figure 11 This is a structural diagram of the fourth longitudinal moving mechanism;

[0040] Figure 12 This is a structural diagram of the second longitudinal moving mechanism;

[0041] Figure 13 This is a structural diagram of the second lateral movement mechanism;

[0042] Figure 14 This is a magnified view of point C;

[0043] Figure 15 It is a collection structure for non-conforming products and samples. Detailed Implementation

[0044] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0045] like Figure 1-15 As shown, an automatic testing machine for miniature loudspeakers includes a frame 1 and a first lateral moving mechanism 2, a material picking and placing mechanism, and a testing box 6 disposed on the frame 1. The first lateral moving mechanism 2 is used to convey a material tray 100 along a first direction, which is lateral. The material picking and placing mechanism is used to take out the loudspeaker 200 to be tested from the material tray 100 and move it to the testing position of the testing box 6, and after the testing is completed, put the loudspeaker 200 that has completed the testing back onto the material tray 100.

[0046] Along the first direction, the first lateral moving mechanism 2 sequentially transports the tray 100 from the product storage station to be tested through the picking station, the idle tray placement station, the unloading station, and the tested product storage station. In actual production, multiple trays 100 containing products to be tested are pre-placed at the product storage station. The tray 100 moves to the picking station, where the picking and unloading mechanism removes the products to be tested from the tray 100. After all the products to be tested 100 on the tray 100 have been removed, the tray 100 moves to the idle tray placement station. After the product completes the inspection, the material handling mechanism moves the inspected and qualified products to the material handling station and places them on the material tray 100 located at the material handling station. In each production run, a material tray 100 needs to be placed in advance at the material handling station. Subsequent material trays 100 are moved from the idle material tray placement station to the material handling station. After the material tray 100 at the material handling station is full, the material tray 100 is moved to the inspected product storage station. The material tray 100 is removed after the inspected product storage station has been filled with a predetermined number of material trays 100 or after all inspections are completed.

[0047] The tray 100 includes a tray body 101, which is rectangular when viewed from above. Multiple upward-facing placement slots 104 are provided on the tray 100 for placing products 200. Two clearance slots 102 are provided on each side wall of the tray body 100. The lower end of each clearance slot 102 is sealed, while the upper end communicates with the outside, and the outward-facing side is also open to the outside. The clearance slots 102 on opposite side walls of the tray body 1 are aligned. A raised edge 103 facing outwards is provided around the bottom edge of the tray body 1.

[0048] Specifically, the first lateral moving mechanism 2 includes a support frame 21 mounted on the frame 1 and two support plates 211 supported on the support frame 21. Each support plate 211 extends along a first direction, and the two support plates 211 are arranged along a second direction, which is longitudinal. Four first corner plates 213 are provided on the support plates 211 at the storage station for the product to be tested. The space enclosed by the four first corner plates 213 can accommodate one tray 100 in the horizontal direction and multiple trays 100 in the vertical direction. Specifically, mounting blocks 212 are provided on the support plate 211 at positions corresponding to each first corner plate 213. In the first direction, the mounting blocks 212 on the same support plate 211 are aligned one by one. In the second direction, the four mounting blocks 212 are aligned in pairs. In the second direction, the distance between two aligned mounting blocks 212 is equal to or slightly greater than the size of the tray 100 in the second direction. The first corner plate 213 is supported on the corresponding mounting block 212 by the mounting plate 2131. The distance between the upper surface of the mounting block 212 and the support plate 211 is greater than the thickness of the tray 100, so as to ensure that the lowermost tray 100 is not obstructed when moving along the first direction.

[0049] The first lateral moving mechanism 2 further includes a tray driving assembly 22, used to drive the tray 100 to move up and down or along a first direction. The tray driving assembly 22 includes a transfer plate 222, which is rectangular. The size of the transfer plate 222 in the first direction is smaller than the size of the tray 100 in the first direction, and its size in the second direction is smaller than the distance between the two support plates 211 and smaller than the size of the tray 100 in the second direction. When viewed from above, the transfer plate 222 is located between the two support plates 211. The transfer plate 222 can move up and down, and thus can move to different workstations to receive the tray 100 that needs to be moved downward or to lift the tray 100 that needs to be moved upward.

[0050] A first blocking plate 227 is respectively provided on the two support plates 211 at the storage station of the product to be tested. The distance between the lower surface of the first blocking plate 227 and the upper surface of the support plate 211 is slightly greater than the thickness of the tray 100. The first blocking plate 227 can move back and forth along the second direction to insert into the corresponding clearance groove 102 of the tray 100. When inserted into the corresponding clearance groove 102, the tray 100 continues to move downward. The tray 100 located above the tray 100 can be supported on the first blocking plate 227 and stop moving downward. The tray 100 located at the bottom continues to move downward until it is supported on the support plate 211. Then the transfer plate 222 moves along the first direction to move the tray 100 to the next station. Each first blocking plate 227 is driven by a blocking cylinder 228.

[0051] Furthermore, clamping blocks 225 are provided on both sides of each transfer plate 222 along the first direction. These clamping blocks 225 can be inserted into the corresponding clearance grooves 102 of the tray 100 located on the transfer plate 222 to press the tray 100 firmly onto the transfer plate 222, preventing the tray 100 from moving during transport. The clamping blocks 225 can be L-shaped, with the horizontal portion extending towards the center of the transfer plate 222 away from the vertical portion. The lower surface of the horizontal portion can be sloped. When the horizontal portion is inserted into the clearance groove 102, the lower surface of the horizontal portion can press the protruding edge 103 firmly onto the transfer plate 222. The clamping blocks 225 are driven by a clamping cylinder 2251.

[0052] Furthermore, the tray drive assembly 22 also includes a first mounting frame 221 and a first lifting plate 224. The first mounting frame 221 is supported on two support plates 211 by two sets of guide rails 231 and a slider (not shown) to move back and forth along a first direction. The first lifting plate 224 is movably mounted on the first mounting frame 221, and the transfer plate 222 is supported on the first lifting plate 224. The up and down movement of the first lifting plate 224 drives the up and down movement of the transfer plate 222. The up and down movement of the first lifting plate 224 is driven by a first lifting motor 223 combined with a lead screw and nut. The movement of the tray drive assembly 22 along the first direction can be driven by a motor 232 combined with a belt 233.

[0053] When it is necessary to move the tray 100 at the product storage station to the picking station, the transfer plate 222 first moves to the product storage station and moves upward a certain distance, disengaging the tray 100 from the first blocking plate 227. The first blocking plate 227 retracts, and at the same time, the clamping block 225 clamps the bottom tray 100. Then, the transfer plate 222 descends a certain distance. During the descent, the first blocking plate 227 extends, and the tray 100 above the bottom tray 100 is supported by the first blocking plate 227. The transfer plate 222 continues to descend, separating the bottom tray 100 from the tray 100 above it. When it descends to a predetermined height, the transfer plate 222 moves horizontally, moving the tray 100 to the picking station. At the picking station, the clamping block 225 remains in place until all products 200 are picked up, after which the tray 100 is moved to the idle tray placement station.

[0054] Four second corner plates 214 are provided on the two support plates 211 and corresponding to the positions where idle material trays are placed. The arrangement of the second corner plates 214 is the same as that of the first corner plates 213. In practice, since there are not many idle material trays, the height of the second corner plates 214 generally only needs to be sufficient to accommodate three or four material trays 100.

[0055] A second blocking plate 215 is also provided on each of the two support plates 211. The second blocking plate 215 has the same structure as the first blocking plate 227. After the transfer plate 222 moves the tray 100 into the idle tray placement position, the transfer plate 222 moves upward until it abuts against the lowest tray in the space enclosed by the second corner plate 214; the transfer plate 222 continues to move upward, and the second blocking plate 215 enters the clearance groove 102 of the tray 100 directly supported on the transfer plate 222; the second blocking plate 215 retracts, and the transfer plate 222 continues to move upward until the bottom of the tray 100 directly supported on the transfer plate 222 is higher than the height of the second blocking plate 215, and the second blocking plate 215 extends directly below the tray 100; the transfer plate 222 moves downward, and the tray 100 is supported on the second blocking plate 215.

[0056] The tray drive assembly 22 has two sets. The first set moves the tray 100 from the product storage station to the idle tray placement station via the retrieval station. The second set moves the tray 100 from the idle tray placement station to the product storage station via the discharge station. Both sets of tray drive assemblies 22 share the guide rail 231 and are driven by different motors and belts. When the second set of tray drive assemblies 22 retrieves the tray at the idle tray placement station, it does so in the same way as when retrieving the tray at the product storage station. After retrieving the tray 100, the second set of tray drive assemblies 22 moves the trays 100 without products to the discharge station to receive the products 200 that have been tested. After the tray 100 is full, the second set of tray drive assemblies 22 moves to the product storage station, and the transfer plate 222 of the second set of tray drive assemblies 22 moves upward to lift the tray 100.

[0057] Two mounting bases 229 are provided on each support plate 211, corresponding to the storage station of the inspected product, and a blocking block 2210 is provided on each mounting base 229. The blocking block 2210 is rotatably mounted on the mounting base 229 via a rotating shaft (not shown). A torsion spring (not shown) is provided on the rotating shaft. The torsion spring has a tendency to always rotate the blocking block 2210 toward its original position. In the original position, the upper surface of the blocking block 2210 is a plane parallel to the horizontal plane. One end of the blocking block 2210 can extend directly below the material tray 100 to block the material tray 100. The lower surface of the blocking block 2210 is a slope or a rounded surface. When a new material tray 100 moves from bottom to top, it can smoothly push the blocking block 2210 away. When the material tray 100 moves upward a certain distance, the blocking block 2210 returns to its original position under the action of the torsion spring. At this time, the material transfer plate 222 moves downward, and the material tray 100 can be supported on the blocking block 2210.

[0058] An angle plate is also provided at the product storage station, and the angle plate is set in the same way as the first angle plate 213. When the number of trays 100 at the product storage station reaches a certain quantity, the trays 100 are taken out from above the space enclosed by the angle plates.

[0059] The material handling mechanism includes a first longitudinal moving mechanism 3, which comprises a first longitudinal module 31 supported on the frame 1 and a first suction nozzle 32. The output end of the first longitudinal module 31 moves back and forth along the second direction, spanning two support plates 211 and located at the material handling station. The first suction nozzle 32 is disposed at the output end of the first longitudinal module 31 and can move up and down relative to the output end of the first longitudinal module 31 and move along the first direction, i.e., the first suction nozzle 32 can move in the XYZ space, thereby picking up the product on the material tray 100 located at the material handling station and moving it to a predetermined position. Specifically, the first suction nozzle 32 can be driven by a motor and belt in the prior art to move along the first direction, and can be driven by a cylinder to move up and down.

[0060] The material handling mechanism further includes a second longitudinal moving mechanism 81. The second longitudinal moving mechanism 81 includes a second longitudinal module 811 mounted on the frame 1, a chuck 813 mounted on the output end of the second longitudinal module 811, and a placement plate 812 clamped on the chuck 813. The placement plate 812 has a material feeding groove for receiving products from the first longitudinal moving mechanism 3. The output end of the second longitudinal module 811 moves back and forth along a second direction.

[0061] The material handling mechanism further includes a second lateral moving mechanism 5. The second lateral moving mechanism 5 includes a lateral module 50 supported on the frame 1, a movable mounting plate 51 disposed on the output end of the lateral module 50, two second lifting plates 52 disposed on the movable mounting plate 51, and two sets of second suction nozzles 53 respectively disposed on the two second lifting plates 52. The output end of the lateral module 50 moves back and forth along the first direction. The two second lifting plates 52 are arranged along the first direction and can move up and down independently relative to the second lifting plate 52. Each set of second suction nozzles 53 can move up and down relative to the corresponding second lifting plate 52. Each set of second suction nozzles 53 has two second suction nozzles, which are arranged along the second direction to pick up both ends of the product. The lifting of the second lifting plate 52 relative to the movable mounting plate 51 is driven by a motor combined with a belt, as is common in the prior art. The up and down movement of the second suction nozzles 53 relative to the second lifting plate 53 is driven by a cylinder.

[0062] The material handling mechanism also includes a fourth longitudinal moving mechanism 82 disposed on the frame 1. The fourth longitudinal moving mechanism 82 is used to convey products along the second direction. The second longitudinal moving mechanism 81 and the fourth longitudinal moving mechanism 82 have the same structure and are respectively disposed on both sides of the second transverse moving mechanism 5 along the first direction. The detection box 6 is disposed on the frame 1 and located between the second longitudinal moving mechanism 81 and the fourth longitudinal moving mechanism 82. The detection box 6 is provided with a detection slot 61 for placing the product to be detected. In the first direction, the detection slot 61 is located in the middle position between the second longitudinal moving mechanism 81 and the fourth longitudinal moving mechanism 82. When one set of second suction nozzles 53 moves between the second longitudinal moving mechanism 81 and the detection slot 61, and the other set of second suction nozzles 53 moves between the detection slot 61 and the fourth longitudinal moving mechanism 82, when one set of second suction nozzles 53 moves the product from the feeding slot on the second longitudinal moving mechanism 81 to the detection slot 61, the other set of second suction nozzles 53 moves the product from the detection slot 61 to the fourth longitudinal moving mechanism 82.

[0063] Two lead pins 55 are provided on the second lifting plate 53, which houses the other set of second suction nozzles 53. These two lead pins 55 are connected to the controller via wires and can move up and down relative to the second lifting plate 53. After the first set of second suction nozzles 53 moves the product into the detection slot 61, the other set of second suction nozzles 53 moves directly above the product and sucks it in. Then, the two lead pins 55 move downwards and contact the two contact points on the product. At this time, the controller controls the product to emit a predetermined sound. A sound recognition device is provided inside the detection box 6. This device collects the sound emitted by the speaker and identifies and judges the sound quality, thereby determining the quality of the product. The sound recognition device uses existing technology that can judge sound quality. The controller controlling the speaker to emit sound also uses existing technology. The up and down movement of the two lead pins 55 is driven by a cylinder.

[0064] After the inspection is completed, the other set of second suction nozzles 53 places the inspected products onto the feeding trough of the fourth longitudinal moving mechanism 82. A barcode scanner 83 is installed on the frame 1, located on one side of the fourth longitudinal moving mechanism 82. Each product 200 has an identification code (not shown). The fourth longitudinal moving mechanism 82 moves each received product 200 to the scanning position, where the barcode scanner 83 scans the code to record the inspection result for each product. In subsequent processes, only scanning the code is needed to obtain the product's inspection result and other information. The identification code can be a barcode or QR code, as used in the prior art. The scanning principle of the barcode scanner 83 also adopts existing technology.

[0065] On the frame 1, opposite to the second longitudinal moving mechanism 81 and relative to the fourth longitudinal moving mechanism 82, a defective product receiving assembly 71 and a qualified sample receiving assembly 72 are provided. The defective product receiving assembly 71 is used to receive defective products obtained from testing, and the qualified sample receiving assembly 72 is used to receive qualified products from random sampling as samples. The defective product receiving assembly 71 includes a defective product module 712 disposed on the frame 1 and a defective product tray 711 disposed on the defective product module 712. The defective product tray 711 is used to receive defective products, and the output end of the defective product module 712 can move back and forth along the first direction. The qualified sample receiving assembly 72 includes a qualified sample module 722 disposed on the frame 1 and a qualified sample tray 721 disposed on the qualified sample module 722. The output end of the qualified sample module 722 can move back and forth along the first direction. It should be noted that there are two qualified sample trays 721 in the figure, but only one is used in actual production. Two trays are drawn to show the two parking positions of the qualified sample tray 721 on the qualified sample module 722.

[0066] Preferably, the defective product receiving assembly 71 has two sets, and the defective product modules 712 and qualified sample modules 722 of the two sets of defective product receiving assemblies 71 are arranged along the second direction.

[0067] The material handling mechanism also includes a third longitudinal moving mechanism 4, which spans two defective product receiving components 71, a qualified sample receiving component 72, and two support plates 211. The third longitudinal moving mechanism 4 can place the product to be inspected onto one of the defective product receiving component 71, the qualified sample receiving component 72, or the material tray 100 at the unloading station. The structure of the third longitudinal moving mechanism 4 is the same as that of the first longitudinal moving mechanism 3, except that the third longitudinal module 41 of the third longitudinal moving mechanism 4 is longer than the first longitudinal module 31 of the first longitudinal moving mechanism 3. Furthermore, when viewed along the first direction, the third longitudinal module 41 is located at one end of the defective product module 712 and the qualified sample module 722. When one set of defective product trays 711 is full, the full defective product tray 711 is moved out, and the defective product is placed onto another set of defective product trays 711.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An automatic testing machine for miniature loudspeakers, characterized in that, include: frame; A first lateral moving mechanism is mounted on the frame and is used to convey each tray along a first direction to sequentially convey it from the product storage station to be tested through the picking station, the idle tray placement station, the unloading station and the tested product storage station, wherein the first direction is lateral. The material handling mechanism is mounted on the frame and is used to remove the product to be inspected from the tray located on the first transverse moving mechanism or to put the inspected product back onto the tray located on the first transverse moving mechanism. The inspection box, mounted on the frame, is used to inspect the products to be inspected that are taken out of the tray on the first transverse moving mechanism by the material handling mechanism; The tray includes: The tray body, when viewed from above, is rectangular. It has multiple upward-facing placement slots for placing products. Each side wall of the tray body has two clearance slots, the lower end of which is sealed and the upper end is open to the outside, with the outward-facing side also open to the outside. The clearance slots on opposite side walls of the tray body are aligned. And / or, a raised edge facing outward is provided around the bottom edge of the tray body. The first lateral movement mechanism includes: The support frame is mounted on the rack; Two support plates are supported on the support frame. Each support plate extends along a first direction and the two support plates are arranged along a second direction, which is longitudinal. Four first corner plates are set on the support plates and at the storage station of the product to be tested. The space enclosed by the four first corner plates can just accommodate one material tray in the horizontal direction and can accommodate multiple material trays in the vertical direction. A tray drive assembly is used to drive the tray to move up and down or along a first direction; the tray drive assembly includes: The transfer plate is rectangular. Its dimension in the first direction is smaller than that of the material tray in the first direction, and its dimension in the second direction is smaller than the distance between the two support plates and smaller than the dimension of the material tray in the second direction. When viewed from above, the transfer plate is located between the two support plates and can move up and down. The first mounting frame and the first lifting plate are supported on two support plates by two sets of guide rails and sliders respectively, so as to move back and forth along the first direction; the first lifting plate is movably mounted on the first mounting frame, and the transfer plate is supported on the first lifting plate. The up and down movement of the first lifting plate can drive the up and down movement of the transfer plate. The material handling mechanism includes a first longitudinal moving mechanism and a third longitudinal moving mechanism, wherein the first longitudinal moving mechanism includes: The first longitudinal module is supported on the frame. The output end of the first longitudinal module moves back and forth along the second direction, spanning two support plates and located at the material handling station. The first suction nozzle is disposed on the output end of the first vertical module and is capable of moving up and down relative to the output end of the first vertical module and moving along the first direction; The material handling mechanism further includes: Both the second and fourth longitudinal moving mechanisms include a placement plate, which can move back and forth along the second direction. An upward-opening feeding groove is provided on the placement plate. The feeding groove of the second longitudinal moving mechanism is used to place the product moved by the first suction nozzle. A detection groove is provided on the detection box for placing the product to be detected. The second lateral moving mechanism is used to move the product to be inspected on the second longitudinal moving mechanism to the inspection slot and to move the product that has been inspected to the inspection slot of the fourth longitudinal moving mechanism. On the frame and on the side opposite to the second longitudinal moving mechanism relative to the fourth longitudinal moving mechanism, there is a defective product receiving assembly and a qualified sample receiving assembly. The defective product receiving assembly is used to receive defective products obtained from the inspection, and the qualified sample receiving assembly is used to receive qualified products that have been sampled as samples. The third longitudinal moving mechanism spans two defective product receiving components, a qualified sample receiving component, and two support plates. The third longitudinal moving mechanism can place the product to be tested onto one of the defective product receiving component, the qualified sample receiving component, or the material tray at the unloading station.

2. The automatic testing machine for miniature loudspeakers according to claim 1, characterized in that, Mounting blocks are provided on the support plate at the position corresponding to each first corner plate. In the first direction, the mounting blocks on the same support plate are aligned one by one. In the second direction, the four mounting blocks are aligned in pairs. In the second direction, the distance between two mutually aligned mounting blocks is equal to or greater than the size of the material tray in the second direction. The first corner plate is supported on the corresponding mounting block by the mounting plate. The distance between the upper surface of the mounting block and the support plate is greater than the thickness of the material tray.

3. The automatic testing machine for miniature loudspeakers according to claim 2, characterized in that, A first blocking plate is provided on each of the two support plates and at the storage station corresponding to the product to be tested. The distance between the lower surface of the first blocking plate and the upper surface of the support plate is greater than the thickness of the tray. The first blocking plate can move back and forth along the second direction to insert into the corresponding clearance groove of the tray.

4. The automatic testing machine for miniature loudspeakers according to claim 3, characterized in that, Clamping blocks are provided on both sides of each transfer plate along the first direction. The clamping blocks can be inserted into the corresponding clearance grooves of the trays on the transfer plate to press the trays onto the transfer plate.

5. An automatic testing method for miniature loudspeakers, employing the automatic testing machine for miniature loudspeakers as described in claim 1, characterized in that, Includes the following steps: Step S1: Stack multiple trays containing products to be tested at the storage station for products to be tested, and place an empty tray at the idle tray placement station. Step S2: Take out the bottommost tray from the storage station for the product to be tested and move it to the picking station. Move the empty tray from the idle tray placement station to the unloading station. Step S3: The picking and unloading mechanism picks up a product to be inspected from the material tray located at the picking station, inspects it, and places the inspected and qualified product onto the material tray located at the unloading station. Step S4: After all the products to be inspected on the tray at the material picking station have been taken out, the tray at the material picking station is moved to the idle tray placement station. Step S5: When the material tray at the feeding station is full of inspected products, the material tray at the picking station is moved to the inspected product storage station. Repeat steps S1-S5 until all products to be tested at the product storage station have been tested.

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