A multi-station automatic qt testing device

Abstract

The application discloses a kind of multi-station automatic QT test equipment, belong to test equipment technical field, including base frame, assembly line, test piece conveying line, qualified piece conveying line, carrier disc backflow conveying line, defective product conveying line and lifting positioning transfer line assembly, the left end and right end of assembly line are respectively equipped with discharge mechanism and feeding mechanism, by above-mentioned mode, in the present application, feeding mechanism, discharge mechanism, test piece conveying line, qualified piece conveying line, carrier disc backflow conveying line and lifting positioning transfer line assembly constitute the circulation of carrier disc conveying, realize the automatic QT test of test piece, and multiple lifting positioning transfer line assembly and multiple multi-station test mechanism cooperate simultaneously to test piece conveying line on test piece take and place and test, and each multi-station test mechanism simultaneously tests multiple test pieces, reduces test time, significantly improves test efficiency, simultaneously, unqualified piece is placed on defective product conveying line and temporarily stored, waits subsequent processing.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and specifically to a multi-station automatic QT testing device. Background Technology

[0002] With the rapid development of electronic products, the demand for various electronic components has grown rapidly. As the quantity of electronic components increases, the quality requirements for these components are also becoming increasingly stringent.

[0003] However, QT testing of 3C products usually takes a certain amount of time. Conventional assembly line testing methods involve many downtimes while waiting for the test to complete and the testing time for each test is long, resulting in low testing efficiency and making it difficult to meet the market's demand for testing large-scale, batch-produced 3C products.

[0004] Based on this, the present invention designs a multi-station automatic QT testing device to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a multi-station automatic QT testing device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A multi-station automated QT testing device includes a base frame and a production line fixedly installed at the front end of the base frame; The upper end of the base frame is equipped with a test piece conveying mechanism, which includes a test piece conveying line, a qualified piece conveying line, a tray return conveying line, a defective piece conveying line, and a lifting and positioning transfer assembly. The test piece conveying line, qualified piece conveying line, and tray return conveying line are fixedly installed on the base frame from back to front. The defective piece conveying line is fixedly installed on the base frame and located above the qualified piece conveying line. Multiple defective piece conveying lines are provided and symmetrically distributed from left to right. The test piece conveying line and qualified piece conveying line are used to convey the tray from right to left, the tray return conveying line is used to convey the tray from left to right, and the multiple defective piece conveying lines cooperate to convey defective pieces towards each other. Two sets of lifting and positioning transfer line assemblies are distributed between the test piece conveyor line and the qualified piece conveyor line and are installed on the base frame; at the rear end of the base frame, two sets of multi-station testing mechanisms corresponding one-to-one with the lifting and positioning transfer line assemblies are also installed. The lifting and positioning transfer line assemblies are used to lift and position the trays containing test pieces from the test piece conveyor line to supply them to the multi-station testing mechanisms, and to transfer the trays containing qualified pieces from the test piece conveyor line to the qualified piece conveyor line. The left and right ends of the production line are respectively equipped with a discharge mechanism and a feeding mechanism. The discharge mechanism is used to discharge test pieces from the trays at the discharge end of the qualified parts conveyor line and to transfer empty trays from the discharge end of the qualified parts conveyor line to the feed end of the tray return conveyor line. The feeding mechanism is used to feed test pieces from the empty trays at the discharge end of the tray return conveyor line and to transfer trays containing test pieces from the discharge end of the tray return conveyor line to the feed end of the test piece conveyor line.

[0007] Furthermore, the lifting and positioning transfer assembly includes a first support platform, a first transfer push assembly, a tray positioning assembly, and a first lifting module. The first support platform is mounted on the upper side of the test piece conveyor line and the qualified piece conveyor line. The first transfer push assembly and the tray positioning assembly are installed on the first support platform. The positioning assembly is used to position the tray lifted by the first lifting module. Two sets of first lifting modules are fixedly installed on the base frame and are located on the lower side of the test piece conveyor line and the qualified piece conveyor line, respectively.

[0008] Furthermore, the feeding mechanism includes a first forward conveyor line, a first reverse conveyor line, and a feeding transfer assembly. The feeding conveyor line is mounted on the upper end of the assembly line and is used to receive test pieces. The first forward conveyor line and the first reverse conveyor line are fixedly installed on the upper end of the base frame. The first reverse conveyor line is connected to the tray return conveyor line and is used to receive trays sent out by the tray return conveyor line; the first forward conveyor line is connected to the test piece conveyor line and is used to convey trays containing test pieces to the test piece conveyor line; the feeding transfer assembly is installed on the base frame and located between the first forward conveyor line and the first reverse conveyor line, and is used to transfer trays on the first forward conveyor line to the first reverse conveyor line.

[0009] Furthermore, the feeding mechanism also includes a feeding robot and a feeding conveyor line. The feeding conveyor line is installed at the upper end of the assembly line and is used to receive test pieces. The feeding robot is fixedly installed at the upper end of the base frame and is used to transfer the test pieces on the feeding conveyor line to the empty tray on the first reverse conveyor line.

[0010] Furthermore, the base frame is also fixedly equipped with a loading and positioning component, which is located below the first reverse conveyor line. The loading and positioning component is used to position and lift the empty tray on the first reverse conveyor line so that the loading robot can put the test piece into the empty tray.

[0011] Furthermore, the feeding transfer assembly includes a second transfer pushing assembly, a second lifting module, a second positioning block, and a second support platform. The second support platform is mounted on the upper side of the first forward conveyor line and the first reverse conveyor line. The second transfer pushing assembly is installed on the second support platform. Two sets of second lifting modules are fixedly installed on the base frame and located on the lower side of the first forward conveyor line and the first reverse conveyor line, respectively. The second positioning block is fixedly installed on the second lifting module and arranged in a "U" shape to allow the carrier tray to slide at the upper limit of the second lifting module.

[0012] Furthermore, the discharge mechanism includes a discharge conveyor line, a second forward conveyor line, a second reverse conveyor line, and a discharge transfer line assembly, with the second forward conveyor line and the second reverse conveyor line fixedly installed on the upper end of the base frame; The second forward conveyor line is connected to the qualified parts conveyor line and is used to receive the trays sent out from the qualified parts conveyor line; the second reverse conveyor line is connected to the tray return conveyor line and is used to transport empty trays to the tray return conveyor line; the discharge transfer assembly is installed on the base frame and located between the second forward conveyor line and the second reverse conveyor line, and is used to transfer the trays on the second forward conveyor line to the second reverse conveyor line.

[0013] Furthermore, the discharge mechanism also includes a discharge conveyor line and a discharge robot. The discharge conveyor line is installed at the upper end of the assembly line and is used for discharging qualified parts. The discharge robot is fixedly installed on the upper end of the base frame and is used to transfer qualified parts in the tray on the second reverse conveyor line to the discharge conveyor line.

[0014] Compared with the prior art, the beneficial effects of this invention are as follows: In this invention, the feeding mechanism, discharging mechanism, test piece conveying line, qualified piece conveying line, carrier tray return conveying line, and lifting and positioning transfer line assembly constitute a cyclic conveying of the carrier tray, realizing automated QT testing of the test pieces. Multiple lifting and positioning transfer line assemblies and multiple multi-station testing mechanisms cooperate to simultaneously pick up, place, and test the test pieces on the test piece conveying line, and each multi-station testing mechanism tests multiple test pieces simultaneously, thereby effectively increasing the number of test pieces tested per unit time, reducing testing time, and significantly improving testing efficiency. At the same time, unqualified pieces are temporarily stored on the defective product conveying line, awaiting subsequent processing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 The present invention provides a three-dimensional multi-station automatic QT testing device. Figure 1 ; Figure 2 The present invention provides a three-dimensional multi-station automatic QT testing device. Figure 2 ; Figure 3 The present invention provides a three-dimensional multi-station automatic QT testing device. Figure 3 ; Figure 4 for Figure 3 A top view of the concealed defective product conveyor line; Figure 5 This is a perspective view of the lifting and positioning guide wire assembly of the present invention; Figure 6 The three-dimensional feeding mechanism of the present invention Figure 1 ; Figure 7 The three-dimensional feeding mechanism of the present invention Figure 2 ; Figure 8 This is a perspective view of the discharge mechanism of the present invention.

[0017] The labels in the diagram represent: 1. Base frame; 2. Assembly line; 3. Carrier tray; 4. Feeding mechanism; 41. Feeding conveyor line; 42. First forward conveyor line; 43. First reverse conveyor line; 44. Loading robot; 45. Feeding transfer assembly; 451. Second module; 452. Second push plate; 453. Second lifting module; 454. Second positioning block; 455. Second support platform; 46. Loading positioning assembly; 461. Positioning frame; 462. Third lifting module; 5. Discharge mechanism; 51. Discharge conveyor line; 52. Second forward conveyor line; 53. Second reverse conveyor line; 54. Lower... 55. Material handling robot; 6. Material discharge transfer assembly; 7. Test piece conveying mechanism; 8. Test piece conveying line; 9. Qualified part conveying line; 10. Carrier tray return conveying line; 11. Defective part conveying line; 2. Lifting and positioning transfer assembly; 12. First linear module; 13. First push plate; 24. Side positioning cylinder; 35. L-shaped support block; 46. Corner positioning cylinder; 57. Corner positioning block; 68. First support platform; 99. First lifting module; 100. First positioning stop block; 11. Multi-station testing mechanism; 12. Test material transfer robot; 13. Test box. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] In some embodiments, please refer to the accompanying drawings. Figures 1-8 A multi-station automatic QT testing device includes a base frame 1 and a production line 2 fixedly installed at the front end of the base frame 1; The upper end of the base frame 1 is equipped with a test piece conveying mechanism 6. The test piece conveying mechanism 6 includes a test piece conveying line 61, a qualified piece conveying line 62, a tray return conveying line 63, a defective piece conveying line 64, and a lifting and positioning conversion assembly 65. The test piece conveying line 61, the qualified piece conveying line 62, and the tray return conveying line 63 are fixedly installed on the base frame 1 from back to front. The defective piece conveying line 64 is fixedly installed on the base frame 1 and located above the qualified piece conveying line 62. Multiple defective piece conveying lines 64 are provided and symmetrically distributed from left to right. The test piece conveying line 61 and the qualified piece conveying line 62 are used to convey the tray 3 from right to left. The tray return conveying line 63 is used to convey the tray 3 from left to right. Multiple defective piece conveying lines 64 cooperate to convey unqualified pieces towards each other. A stop bar is fixedly installed at the discharge end of the defective piece conveying line 64.

[0020] Two sets of lifting and positioning transfer line assemblies 65 are distributed between the test piece conveyor line 61 and the qualified piece conveyor line 62 and are installed on the base frame 1; two sets of multi-station testing mechanisms 7 corresponding one-to-one with the lifting and positioning transfer line assemblies 65 are also installed at the rear end of the base frame 1. The lifting and positioning transfer line assemblies 65 are used to lift and position the tray 3 containing the test piece from the test piece conveyor line 61 to supply it to the multi-station testing mechanism 7, and to transfer the tray 3 containing the qualified piece from the test piece conveyor line 61 to the qualified piece conveyor line 62. The left and right ends of the production line 2 are respectively equipped with a discharge mechanism 5 and a feeding mechanism 4. The discharge mechanism 5 is used to discharge test pieces from the tray 3 at the discharge end of the qualified part conveying line 62 and to transfer the empty tray 3 from the discharge end of the qualified part conveying line 62 to the feeding end of the tray return conveying line 63. The feeding mechanism 4 is used to feed test pieces from the empty tray 3 at the discharge end of the tray return conveying line 63 and to transfer the tray 3 containing test pieces from the discharge end of the tray return conveying line 63 to the feeding end of the test piece conveying line 61.

[0021] In this invention, the feeding mechanism 4, the discharging mechanism 5, the test piece conveying line 61, the qualified piece conveying line 62, the carrier tray return conveying line 63, and the lifting and positioning transfer line assembly 65 constitute a cyclic conveying of the carrier tray 3, realizing automated QT testing of the test pieces. Multiple lifting and positioning transfer line assemblies 65 and multiple multi-station testing mechanisms 7 cooperate to simultaneously pick up, place, and test the test pieces on the test piece conveying line 61. Each multi-station testing mechanism 7 tests multiple test pieces simultaneously, thereby effectively increasing the number of test pieces tested per unit time, reducing testing time, and significantly improving testing efficiency. Meanwhile, unqualified pieces are temporarily stored on the defective product conveying line 64, awaiting subsequent processing.

[0022] In some embodiments, such as Figure 5 As shown, the lifting and positioning transfer assembly 65 includes a first support platform 657, a first transfer pushing assembly, a tray positioning assembly, and a first lifting module 658. The first support platform 657 is mounted on the upper side of the test piece conveyor line 61 and the qualified piece conveyor line 62. The first transfer pushing assembly and the tray positioning assembly are installed on the first support platform 657. The positioning assembly is used to position the tray 3 lifted by the first lifting module 658. Two sets of first lifting modules 658 are fixedly installed on the base frame 1 and are located on the lower side of the test piece conveyor line 61 and the qualified piece conveyor line 62, respectively. The tray positioning assembly includes a first positioning block 659, a side positioning assembly, and a corner positioning assembly. Two sets of side positioning assemblies are installed on the first support platform 657 and are symmetrically distributed on the left and right. The corner positioning assembly is also installed on the first support platform 657. The side positioning assembly and the corner positioning assembly are located on the upper side of the test piece conveying line 61. The two work together to position the tray 3 on the test piece conveying line 61, which is lifted by the first lifting module 658. The first positioning block 659 is fixedly installed on the first lifting module 658 and is located on the upper side of the qualified part conveying line 62. The first positioning block 659 is arranged in a "U" shape to allow the tray 3 to slide at the upper limit on the first support platform 657. The side positioning assembly includes a side positioning cylinder 653 and an L-shaped support block 654. The side positioning cylinder 653 is fixedly installed on the first support platform 657, and the output end of the side positioning cylinder 653 is fixedly connected to the L-shaped support block 654. The corner positioning assembly includes a corner positioning cylinder 655 and a corner positioning block 656. The corner positioning cylinder 655 is fixedly connected to the first support platform 657, and the output end of the corner positioning cylinder 655 is fixedly connected to the corner positioning block 656. Both the L-shaped support block 654 and the corner positioning block 656 have protrusions fixedly installed on their upper ends. The protrusions cooperate with the first lifting module 658 to prevent the carrier plate 3 from vertically displacing.

[0023] The line-pushing assembly includes a first linear module 651 and a first push plate 652. The first linear module 651 is fixedly installed on the first support platform 657, and the movable end of the first linear module 651 is fixedly connected to the first push plate 652. In this invention, the test piece conveyor line 61 drives the tray 3 containing the test pieces to be conveyed from right to left until the tray 3 is blocked and positioned by the stopper. The first lifting module 658 lifts the tray 3 from the test piece conveyor line 61 until it is flush with the upper surface of the first support platform 657. First, the side positioning cylinder 653 pushes the L-shaped support block 654 to position the two sides of the tray 3. Then, the corner positioning cylinder 655 pushes the corner positioning block 656, which pushes one corner of the tray 3 towards the L-shaped support block 654. The tray 3 is then fixed by the cooperation of the L-shaped support block 654 and the corner positioning block 656, enabling the multi-station testing mechanism 7 to accurately... The test piece is placed in the carrier tray 3; after the test is completed, the qualified piece is put back into the carrier tray 3, and the unqualified piece is placed on the defective product conveyor line 64. The pistons of the side positioning cylinder 653 and the corner positioning cylinder 655 are reset to release the carrier tray 3. The first linear module 651 drives the first push plate 652 to push the carrier tray 3 towards the upper side of the qualified piece conveyor line 62 under the limiting action of the first positioning block 659. Then, the first lifting module 658 lowers the carrier tray 3 onto the qualified piece conveyor line 62, so that the qualified piece conveyor line 62 drives the carrier tray 3 containing the qualified piece to the left for discharge, and the empty carrier tray 3 after discharge is transported to the right by the carrier tray return conveyor line 63.

[0024] In some embodiments, such as Figure 6 and Figure 7 As shown, the feeding mechanism 4 includes a feeding conveyor line 41, a first forward conveyor line 42, a first reverse conveyor line 43, a loading robot 44, a feeding transfer assembly 45, and a loading positioning assembly 46. The feeding conveyor line 41 is mounted on the upper end of the production line 2 and is used to receive test pieces. The first forward conveyor line 42, the first reverse conveyor line 43, and the loading robot 44 are fixedly installed on the upper end of the base frame 1. The loading positioning assembly 46 is installed on the base frame 1 and located below the first reverse conveyor line 43. The loading positioning assembly 46 is used to position the tray 3 on the first reverse conveyor line 43. The loading robot 44 is used to transfer the test pieces on the feeding conveyor line 41 to the tray 3 on the first reverse conveyor line 43 that is positioned by the loading positioning assembly 46. The first reverse conveyor line 43 is connected to the tray return conveyor line 63, and the first reverse conveyor line 43 is used to receive the tray 3 sent out by the tray return conveyor line 63; the first forward conveyor line 42 is connected to the test piece conveyor line 61, and the first forward conveyor line 42 is used to convey the tray 3 containing the test piece to the test piece conveyor line 61; the feeding transfer assembly 45 is installed on the base frame 1 and located between the first forward conveyor line 42 and the first reverse conveyor line 43, and the feeding transfer assembly 45 is used to transfer the tray 3 on the first forward conveyor line 42 to the first reverse conveyor line 43; The feeding transfer assembly 45 includes a second transfer pushing assembly, a second lifting module 453, a second positioning block 454, and a second support platform 455. The second support platform 455 is mounted on the upper side of the first forward conveyor line 42 and the first reverse conveyor line 43. The second transfer pushing assembly is installed on the second support platform 455. Two sets of second lifting modules 453 are fixedly installed on the base frame 1 and are located on the lower side of the first forward conveyor line 42 and the first reverse conveyor line 43, respectively. The second positioning block 454 is fixedly installed on the second lifting module 453 and arranged in a "U" shape to allow the carrier plate 3 to slide at the upper limit of the second lifting module 453. The second transfer push assembly includes a second module 451 and a second push plate 452. The second module 451 is fixedly installed on the second lifting module 453, and the moving end of the second module 451 is fixedly connected to the second push plate 452. The second lifting module 453 lifts the tray 3 on the first reverse conveyor line 43 to be coplanar with the upper surface of the second support platform 455. Then, the second module 451 drives the second push plate 452 to push the tray 3 from the first reverse conveyor line 43 to the first forward conveyor line 42 under the limiting action of the second positioning block 454. Then, the second lifting module 453 lowers the first reverse conveyor line 43 and releases it onto the first forward conveyor line 42.

[0025] The feeding and positioning component 46 includes a positioning frame 461 and a third lifting module 462. The positioning frame 461 is mounted on the upper side of the first reverse conveyor line 43, and the third lifting module 462 is fixedly installed on the base frame 1 and located on the lower side of the first reverse conveyor line 43. In some embodiments, such as Figure 8 As shown, the discharge mechanism 5 includes a discharge conveyor line 51, a second forward conveyor line 52, a second reverse conveyor line 53, a discharge robot 54, and a discharge transfer assembly 55. The discharge conveyor line 51 is mounted on the upper end of the assembly line 2 and is used for discharging qualified parts. The second forward conveyor line 52, the second reverse conveyor line 53, and the discharge robot 54 are fixedly installed on the upper end of the base frame 1. The discharge robot 54 is used to transfer qualified parts from the carrier tray 3 on the second reverse conveyor line 53 to the discharge conveyor line 51. The second forward conveyor line 52 is connected to the qualified parts conveyor line 62 and is used to receive the trays 3 sent out from the qualified parts conveyor line 62. The second reverse conveyor line 53 is connected to the tray return conveyor line 63 and is used to convey the empty trays 3 to the tray return conveyor line 63. The discharge transfer assembly 55 is installed on the base frame 1 and located between the second forward conveyor line 52 and the second reverse conveyor line 53. The discharge transfer assembly 55 is used to transfer the parts on the second forward conveyor line 52 to the second reverse conveyor line 53, and the discharge transfer assembly 55 and the feeding transfer assembly 45 have the same structure.

[0026] The multi-station testing mechanism 7 includes a test transfer robot 71 and test boxes 72. The test transfer robot 71 is located on the rear side of the base frame 1, and multiple test boxes 72 are distributed on both sides of the test transfer robot 71. In this embodiment, the test box 72 is provided with eight test boxes, and the movable end of the test transfer robot 71 has two sets of pneumatic grippers. By switching between the two sets of pneumatic grippers, the test transfer robot 71 can meet the requirements of rapid pick-up and drop-off of test pieces.

[0027] The specific working steps of this invention are as follows: Step 1: The third lifting module 462 lifts the empty pallet 3 on the first reverse conveyor line 43, so that the pallet 3 is positioned by the positioning frame 461. Step 2: The loading robot 44 transfers the test piece from the feeding conveyor line 41 to the empty tray 3 positioned by the positioning frame 461. The third lifting module 462 drives the tray 3 containing the test piece to descend and release it onto the first reverse conveyor line 43. Step 3: At the discharge end of the first reverse conveyor line 43, the second transfer push assembly pushes the tray 3 containing the test piece from the first reverse conveyor line 43 to the upper side of the first forward conveyor line 42, and the first forward conveyor line 42 conveys the tray 3 containing the test piece to the test piece conveyor line 61. Step 4: The carrier plate 3 containing the test piece rests on the upper side of the first lifting module 658. The first lifting module 658 drives the carrier plate 3 to rise and positions the carrier plate 3 through the carrier plate positioning component. Step 5: The test transfer robot 71 takes the test piece from the carrier 3, sends the test piece to the test box 72 for QT testing, and transfers the unqualified parts to the defective product conveyor line 64, while the qualified parts are put back into the carrier 3. Step 6: The carrier tray positioning assembly releases the carrier tray 3 containing the qualified parts. The first transfer push assembly pushes the carrier tray 3 from the test piece conveyor line 61 to the upper side of the qualified part conveyor line 62. Then, the first lifting module 658 drives the carrier tray 3 to descend and release it onto the qualified part conveyor line 62. Step 7: The qualified parts conveyor line 62 conveys the tray 3 containing qualified parts to the second forward conveyor line 52. The second transfer push assembly pushes the tray 3 containing qualified parts from the second forward conveyor line 52 to the second reverse conveyor line 53. The unloading robot 54 removes the qualified parts from the tray 3 and transfers them to the discharge conveyor line 51. The second reverse conveyor line 53 conveys the empty tray 3 to the tray return conveyor line 63. Step 8: The empty tray 3 is returned to the first reverse conveyor line 43 via the tray return conveyor line 63.

[0028] In this invention, the test piece conveyor line 61, the qualified piece conveyor line 62, the tray return conveyor line 63, the defective piece conveyor line 64, the first forward conveyor line 42, the first reverse conveyor line 43, the second forward conveyor line 52, and the second reverse conveyor line 53 cooperate to form a circulating conveying structure for the tray 3, which is responsible for the transfer of the tray 3 and the diversion of test pieces, qualified pieces, and unqualified pieces, thus meeting the requirements for automated and high-efficiency QT testing of workpieces and significantly improving testing efficiency.

[0029] In this embodiment, the test piece conveying line 61, qualified piece conveying line 62, tray return conveying line 63, defective product conveying line 64, feeding conveying line 41, first forward conveying line 42, first reverse conveying line 43, discharge conveying line 51, second forward conveying line 52 and second reverse conveying line 53 all adopt double-row synchronous belt conveyors, and each conveying line is equipped with multiple position sensors, stoppers and check valves to realize directional conveying, individual conveying and fixed-point stopping of trays 3.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-station automatic QT testing device, comprising a base frame (1) and a production line (2) fixedly installed at the front end of the base frame (1), characterized in that: The upper end of the base frame (1) is equipped with a test piece conveying mechanism (6). The test piece conveying mechanism (6) includes a test piece conveying line (61), a qualified piece conveying line (62), a tray return conveying line (63), a defective piece conveying line (64), and a lifting and positioning transfer assembly (65). The test piece conveying line (61), the qualified piece conveying line (62), and the tray return conveying line (63) are fixedly installed on the base frame (1) from back to front. The defective piece conveying line (64) is fixedly installed on the base frame (1) and located above the qualified piece conveying line (62). Multiple defective piece conveying lines (64) are provided and symmetrically distributed from left to right. The test piece conveying line (61) and the qualified piece conveying line (62) are used to convey the tray (3) from right to left. The tray return conveying line (63) is used to convey the tray (3) from left to right. Multiple defective piece conveying lines (64) are used in conjunction to convey unqualified pieces towards each other. Two sets of lifting and positioning transfer line assemblies (65) are distributed between the test piece conveying line (61) and the qualified piece conveying line (62) and installed on the base frame (1); two sets of multi-station testing mechanisms (7) corresponding one-to-one with the lifting and positioning transfer line assemblies (65) are also installed at the rear end of the base frame (1). The lifting and positioning transfer line assemblies (65) are used to lift and position the tray (3) containing the test piece from the test piece conveying line (61) to supply it to the multi-station testing mechanism (7), and to transfer the tray (3) containing the qualified piece from the test piece conveying line (61) to the qualified piece conveying line (62); The left and right ends of the production line (2) are respectively equipped with a discharge mechanism (5) and a feeding mechanism (4). The discharge mechanism (5) is used to discharge the test pieces in the tray (3) at the discharge end of the qualified parts conveying line (62) and to transfer the empty tray (3) from the discharge end of the qualified parts conveying line (62) to the feeding end of the tray return conveying line (63). The feeding mechanism (4) is used to feed the test pieces in the empty tray (3) at the discharge end of the tray return conveying line (63) and to transfer the tray (3) containing the test pieces from the discharge end of the tray return conveying line (63) to the feeding end of the test piece conveying line (61).

2. The multi-station automatic QT testing equipment according to claim 1, characterized in that, The lifting and positioning transfer assembly (65) includes a first support platform (657), a first transfer push assembly, a tray positioning assembly, and a first lifting module (658). The first support platform (657) is mounted on the upper side of the test piece conveying line (61) and the qualified piece conveying line (62). The first transfer push assembly and the tray positioning assembly are installed on the first support platform (657). The positioning assembly is used to position the tray (3) lifted by the first lifting module (658). Two sets of first lifting modules (658) are fixedly installed on the base frame (1) and located on the lower side of the test piece conveying line (61) and the qualified piece conveying line (62), respectively.

3. The multi-station automatic QT testing equipment according to claim 2, characterized in that, The feeding mechanism (4) includes a first forward conveyor line (42), a first reverse conveyor line (43), and a feeding transfer assembly (45). The first forward conveyor line (42) and the first reverse conveyor line (43) are fixedly installed on the upper end of the base frame (1). The first reverse conveyor line (43) is connected to the tray return conveyor line (63) and is used to receive the tray (3) sent out by the tray return conveyor line (63). The first forward conveyor line (42) is connected to the test piece conveyor line (61) and is used to convey the tray (3) containing the test piece to the test piece conveyor line (61). The feeding transfer assembly (45) is installed on the base frame (1) and located between the first forward conveyor line (42) and the first reverse conveyor line (43). The feeding transfer assembly (45) is used to transfer the tray (3) on the first forward conveyor line (42) to the first reverse conveyor line (43).

4. The multi-station automatic QT testing equipment according to claim 3, characterized in that, The feeding mechanism (4) also includes a feeding robot (44) and a feeding conveyor line (41). The feeding conveyor line (41) is installed on the upper end of the assembly line (2) and is used to receive test pieces. The feeding robot (44) is fixedly installed on the upper end of the base frame (1) and is used to transfer the test pieces on the feeding conveyor line (41) to the empty tray (3) on the first reverse conveyor line (43).

5. The multi-station automatic QT testing equipment according to claim 4, characterized in that, The base frame (1) is also fixedly installed with a loading positioning component (46). The loading positioning component (46) is located on the lower side of the first reverse conveyor line (43). The loading positioning component (46) is used to position and lift the empty tray (3) on the first reverse conveyor line (43) so that the loading robot (44) can put the test piece into the empty tray (3).

6. The multi-station automatic QT testing equipment according to claim 5, characterized in that, The feeding transfer assembly (45) includes a second transfer push assembly, a second lifting module (453), a second positioning block (454), and a second support platform (455). The second support platform (455) is mounted on the upper side of the first forward conveyor line (42) and the first reverse conveyor line (43). The second transfer push assembly is installed on the second support platform (455). Two sets of second lifting modules (453) are fixedly installed on the base frame (1) and located on the lower side of the first forward conveyor line (42) and the first reverse conveyor line (43), respectively. The second positioning block (454) is fixedly installed on the second lifting module (453) and arranged in a "U" shape to allow the tray (3) to slide at the upper limit on the second lifting module (453).

7. The multi-station automatic QT testing equipment according to claim 6, characterized in that, The discharge mechanism (5) includes a second forward conveyor line (52), a second reverse conveyor line (53) and a discharge transfer assembly (55). The second forward conveyor line (52) and the second reverse conveyor line (53) are fixedly installed on the upper end of the base frame (1). The second forward conveyor line (52) is connected to the qualified parts conveyor line (62), and the second forward conveyor line (52) is used to receive the trays (3) sent out from the qualified parts conveyor line (62); the second reverse conveyor line (53) is connected to the tray return conveyor line (63), and the second reverse conveyor line (53) is used to convey the empty trays (3) to the tray return conveyor line (63); the discharge transfer assembly (55) is installed on the base frame (1) and located between the second forward conveyor line (52) and the second reverse conveyor line (53), and the discharge transfer assembly (55) is used to transfer the trays (3) on the second forward conveyor line (52) to the second reverse conveyor line (53).

8. The multi-station automatic QT testing equipment according to claim 7, characterized in that, The discharge mechanism (5) also includes a discharge conveyor line (51) and a discharge robot (54). The discharge conveyor line (51) is installed on the upper end of the assembly line (2) and is used for discharging qualified parts. The discharge robot (54) is fixedly installed on the upper end of the base frame (1) and is used to transfer qualified parts in the tray (3) on the second reverse conveyor line (53) to the discharge conveyor line (51).

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