Frequency Response Curve Automatic Tester

Abstract

The present invention relates to an automatic frequency response curve testing machine, which includes a machine base and a detection mechanism, a feeding mechanism, and a sorting and discharging mechanism provided on the machine base. The detection mechanism includes a turntable and a detection component. A carrier is provided on the turntable. A feeding manipulator is provided between the feeding mechanism and the turntable, and a discharging manipulator for sorting the products that have completed the detection is provided between the sorting and discharging mechanism and the turntable. The detection component includes a detector, an upper detection group, and a lower detection group. The upper detection group includes an upper detection seat and an upper detection driving mechanism. A probe is provided on the upper detection seat. The lower detection group includes a lower detection seat and a lower detection driving mechanism. A simulation ear is provided on the lower detection seat. The detector is electrically connected to the probe and the simulation ear, and can generate a frequency response curve according to the detected information. The present invention adopts automatic detection, greatly improves the detection efficiency, reduces the production cost, and at the same time can avoid sorting chaos and prevent product mixing during subsequent production.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and particularly to an automatic testing machine for frequency response curves. Background Art

[0002] An earphone is a common audio wearable device, and the speaker inside it is the main component for emitting sound. There are frequency response curves in different ranges during the production process of the speaker. In order to ensure that the ranges of the frequency response curves of the two speakers on the left and right of the earphone are the same, it is necessary to detect and sort the frequency response curves of the speakers. The traditional detection of the frequency response curve of the speaker mainly relies on manual detection by workers using detection tools. However, due to the low efficiency of the manual detection method, it consumes a large amount of labor, resulting in high production costs for enterprises. At the same time, workers are prone to fatigue during long-term work, which easily leads to sorting confusion and product mixing. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the present invention provides an automatic testing machine for frequency response curves, which adopts an automated method for detection, greatly improves the detection efficiency, reduces the production cost, and at the same time can avoid sorting confusion and prevent product mixing during subsequent production.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An automatic testing machine for frequency response curves includes a machine base and a detection mechanism, a loading mechanism, and a sorting and unloading mechanism provided on the machine base. The detection mechanism includes a turntable and detection components provided around the turntable. A carrier for fixing the product to be tested is provided on the turntable. A loading manipulator for taking the product to be tested on the loading mechanism to the carrier is provided between the loading mechanism and the turntable. A unloading manipulator for sorting the products that have completed the detection is provided between the sorting and unloading mechanism and the turntable.

[0006] As a preferred solution, a positioning component for positioning the product to be tested on the carrier is provided outside the turntable. The positioning component includes a CCD vision mechanism for detecting the angle of the product to be tested and an angle adjustment mechanism for correcting the angle of the product to be tested. The CCD vision mechanism is provided above the turntable.

[0007] As a preferred solution, the loading mechanism includes a tray stacking loading slot, a tray stacking unloading slot, a tray handling seat, and a reciprocating drive mechanism for controlling the reciprocating movement of the tray handling seat between the tray stacking loading slot and the tray stacking unloading slot. A supporting plate for supporting the tray and a loading lifting mechanism for controlling the up and down movement of the supporting plate are provided on the tray handling seat. A product picking station is formed between the tray stacking loading slot and the tray stacking unloading slot.

[0008] As a preferred solution, a plurality of sorting and discharging stations are provided on one side of the turntable away from the feeding mechanism, and the sorting and discharging mechanism is a plurality of finished product discharging mechanisms. The plurality of finished product discharging mechanisms are arranged at corresponding sorting and discharging stations, and the plurality of finished product discharging mechanisms are arranged side by side.

[0009] As a preferred solution, the feeding manipulator includes a feeding cross beam, a feeding picking group arranged on the feeding cross beam, and a feeding driving mechanism for controlling the lateral movement of the feeding picking group. The discharging manipulator includes a discharging cross beam, a discharging picking group arranged on the discharging cross beam, and a discharging driving mechanism for controlling the lateral movement of the discharging picking group. The feeding picking group and the discharging picking group both have a plurality of picking parts arranged side by side, and each picking part can move up and down independently. The picking part includes a picking clamp, a clamping cylinder for controlling the movement of the picking clamp, and a picking lifting cylinder for controlling the up and down movement of the clamping cylinder.

[0010] As a preferred solution, the detection component includes a detector, an upper detection group, and a lower detection group that cooperates with the upper detection group. The upper detection group and the lower detection group are respectively arranged on the upper and lower sides of the turntable. The upper detection group includes an upper detection seat and an upper detection driving mechanism for controlling the up and down movement of the upper detection seat. The upper detection seat is provided with probes corresponding to the contacts on the product to be tested. The lower detection group includes a lower detection seat and a lower detection driving mechanism for controlling the up and down movement of the lower detection seat. The lower detection seat is provided with simulation ears corresponding to the product to be tested. The detector is electrically connected to the probes and the simulation ears, and can generate a frequency response curve according to the detected information.

[0011] As a preferred solution, the upper detection group further includes an upper mounting frame for mounting the upper detection seat. The upper detection seat is movably mounted up and down on the upper mounting frame, and a thrust spring is provided on the upper mounting frame to make the upper detection seat always tend to move upward.

[0012] As a preferred solution, the lower detection group further includes a lower mounting frame for mounting the lower detection seat. The lower mounting frame is provided with a vertically arranged guide rod, and the lower detection seat is movably connected to the guide rod.

[0013] As a preferred solution, a plurality of detection pressing blocks that can move up and down independently are provided on the upper detection seat. Upper buffer springs are provided between the plurality of detection pressing blocks and the upper detection seat. The probes are arranged on the detection pressing blocks. A plurality of detection top blocks that can move up and down independently are provided on the lower detection seat. Lower buffer springs are provided between the plurality of detection top blocks and the lower detection seat. The simulation ears are arranged on the detection top blocks.

[0014] As a preferred solution, the detection pressing block has a receiving cavity with an opening facing downward. An elastic pressing rod for pressing the product downward is arranged in the receiving cavity. The lower end of the probe is located in the receiving cavity, and the lower end of the elastic pressing rod is lower than the lower end of the probe. A sealing ring is arranged at the opening edge of the receiving cavity.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, by setting up a detection mechanism, a feeding mechanism, a sorting and discharging mechanism, and upper and lower material handling robots, the upper material handling robot takes the product to be tested to the detection mechanism for frequency response curve detection. After the detection is completed, the lower material handling robot sorts the products with different curve ranges into the sorting mechanism, thus realizing automatic detection, greatly improving the detection efficiency, reducing the production cost, and at the same time avoiding sorting chaos and preventing product mixing during subsequent production; by setting up a CCD vision mechanism and an angle adjustment mechanism to correct the angle of the product in advance, improving the detection accuracy and automation degree; by setting up multiple independent detection pressing blocks and detection top blocks, the probes on each detection pressing block and the simulation ears on each detection top block can move independently, and under the action of the buffer spring, it can ensure that the product is detected in place; by setting up a thrust spring, the upper detection seat can be automatically lifted in the non-working state, so that the probe is far away from the turntable to avoid being damaged; by setting up an elastic pressing rod to tightly press the product downward to prevent a gap between the product and the carrier, and setting a sealing ring to avoid external noise interfering with the detection of the product.

[0016] To more clearly illustrate the structural features, technical means, and the specific purposes and functions achieved by the present invention, the following further details the present invention in combination with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the assembled structural schematic diagram of the embodiment of the present invention;

[0018] Figure 2 is the structural schematic diagram of the embodiment of the present invention after removing the frame;

[0019] Figure 3 is Figure 2 the top view of

[0020] Figure 4 is the assembly schematic diagram of the upper material handling robot and the lower material handling robot of the embodiment of the present invention;

[0021] Figure 5 is the schematic diagram of the feeding mechanism of the embodiment of the present invention;

[0022] Figure 6 is the side view of the feeding mechanism of the embodiment of the present invention;

[0023] Figure 7 is the schematic diagram of the detection mechanism of the embodiment of the present invention;

[0024] Figure 8 It is a side view of the upper detection group, upper detection group and turntable assembly of the embodiment of the present invention;

[0025] Figure 9 It is a schematic structural diagram of the upper detection group of the embodiment of the present invention;

[0026] Figure 10 It is a schematic structural diagram of the lower detection group of the embodiment of the present invention.

[0027] Explanation of the attached drawing reference numerals:

[0028] 10 - Frame; 11 - Machine base; 12 - Sorting and blanking mechanism;

[0029] 13 - Finished product blanking mechanism; 14 - Re - inspection blanking mechanism; 20 - Loading mechanism;

[0030] 21 - Tray stacking placement slot; 22 - Tray stacking removal slot; 221 - Elastic baffle;

[0031] 23 - Telescopic cylinder; 231 - Telescopic baffle; 24 - Reciprocating drive mechanism;

[0032] 241 - Synchronous belt; 242 - Reciprocating drive motor; 25 - Tray handling seat;

[0033] 26 - Loading lifting mechanism; 27 - Support plate; 28 - Product picking station;

[0034] 29 - Tray; 30 - Loading manipulator; 31 - Unloading manipulator;

[0035] 32 - CCD vision mechanism; 33 - Loading crossbeam; 331 - Loading drive mechanism;

[0036] 34 - Loading picking group; 35 - Picking part; 351 - Picking clamp;

[0037] 352 - Clamping cylinder; 353 - Picking lifting cylinder; 36 - Unloading crossbeam;

[0038] 361 - Unloading drive mechanism; 37 - Unloading picking group; 38 - Product;

[0039] 40 - Detection mechanism; 41 - Turntable; 42 - Carrier;

[0040] 43 - Angle adjustment mechanism; 44 - Rotary drive motor; 45 - Detection component;

[0041] 50 - Upper detection group; 51 - Upper mounting frame; 52 - Upper detection drive mechanism;

[0042] 53 - Upper detection seat; 54 - Upper buffer spring; 55 - Detection pressing block;

[0043] 56 - Thrust spring; 57 - Probe; 58 - Elastic pressing rod;

[0044] 59 - Accommodation cavity; 60 - Lower detection group; 61 - Lower mounting bracket;

[0045] 62 - Simulated ear; 63 - Detection top block; 64 - Lower buffer spring;

[0046] 65 - Lower detection seat; 66 - Guide rod; 67 - Lower detection drive mechanism. Detailed implementation mode

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] As Figures 1-10 shown, a frequency response curve automatic testing machine includes a frame 10, a machine base 11 is provided on the frame 10, a detection mechanism 40, a feeding mechanism 20, and a sorting and discharging mechanism 12 are provided on the machine base 11. The feeding mechanism 20 and the sorting and discharging mechanism 12 are respectively arranged on the left and right sides of a turntable 41. The detection mechanism 40 includes the turntable 41, a detection component 45 arranged around the turntable 41, and a rotation drive motor 44 for controlling the rotation of the turntable 41. A carrier 42 for fixing a product 38 to be tested is provided on the turntable 41. There are four groups of carriers 42, and the four groups of carriers 42 are distributed in a ring shape. Each group includes a plurality of carriers 42 arranged in a row. A feeding manipulator 30 for taking the product 38 to be tested on the feeding mechanism 20 to the carrier 42 is provided between the feeding mechanism 20 and the turntable 41. A discharging manipulator 31 for sorting the product 38 that has completed the detection is provided between the sorting and discharging mechanism 12 and the turntable 41.

[0050] A positioning assembly for positioning the product 38 to be tested on the carrier 42 is provided on the front side of the turntable 41. The positioning assembly includes a CCD vision mechanism 32 for detecting the angle of the product 38 to be tested and an angle adjustment mechanism 43 for correcting the angle of the product 38 to be tested. The CCD vision mechanism 32 is provided above the turntable 41, and the CCD vision mechanism 32 is installed on the loading manipulator 30 and can move with the loading manipulator 30.

[0051] The loading manipulator 30 includes a loading cross beam 33, a loading picking group 34 provided on the loading cross beam 33, and a loading driving mechanism 331 for controlling the lateral movement of the loading picking group 34. The unloading manipulator 31 includes an unloading cross beam 36, an unloading picking group 37 provided on the unloading cross beam 36, and an unloading driving mechanism 361 for controlling the lateral movement of the unloading picking group 37. The loading cross beam 33 and the unloading cross beam 36 are located on the same axis and are integrally connected. The loading picking group 34 and the unloading picking group 37 both have a plurality of picking parts 35 arranged side by side, and each picking part 35 can move independently up and down. The picking part 35 includes a picking clamp 351, a clamping cylinder 352 for controlling the movement of the picking clamp 351, and a picking lifting cylinder 353 for controlling the up and down movement of the clamping cylinder 352.

[0052] The feeding mechanism 20 includes a tray stacking placing groove 21, a tray stacking removing groove 22, a tray handling seat 25, and a reciprocating driving mechanism 24 for controlling the reciprocating movement of the tray handling seat 25 between the tray stacking placing groove 21 and the tray stacking removing groove 22. The reciprocating driving mechanism 24 is a synchronous belt 241 and a reciprocating driving motor 242 for driving the synchronous belt 241 to move. The tray handling seat 25 is connected to the synchronous belt 241 and can move with the synchronous belt 241. A supporting plate 27 for supporting the tray 29 and a feeding lifting mechanism 26 for controlling the up and down movement of the supporting plate 27 are provided on the tray handling seat 25. The supporting plate 27 is arranged below the tray stacking placing groove 21 and the tray stacking removing groove 22. An elastic baffle 221 for restricting the falling of the tray 29 is arranged in the tray stacking removing groove 22. When the tray 29 moves upward, the elastic baffle 221 automatically retracts after contacting the tray 29, and the tray 29 continues to move upward to a position above the elastic baffle 221 and then the elastic baffle 221 extends again to block the falling of the tray 29, thereby realizing the stacking of the trays 29. A product picking station 28 is formed between the tray stacking placing groove 21 and the tray stacking removing groove 22. Telescopic baffles 231 and telescopic cylinders 23 for controlling the movement of the telescopic baffles 231 are arranged on both sides of the tray stacking placing groove 21. The extension and retraction of the telescopic baffles 231 can make the trays 29 fall one by one. On the side of the turntable 41 away from the feeding mechanism 20, there are a plurality of sorting and discharging stations set according to different detection results. The sorting and discharging mechanism 12 is a plurality of finished product discharging mechanisms 13. The plurality of finished product discharging mechanisms 13 are arranged at the corresponding sorting and discharging stations and are arranged side by side. A re-inspection and discharging mechanism 14 is arranged on the side of the sorting and discharging mechanism 12 away from the turntable 41. The re-inspection and discharging mechanism 14 is used to store the products 38 that cannot be sorted after detection, and the products 38 are re-inspected manually. In the present invention, the structures of the finished product discharging mechanism 13 and the re-inspection and discharging mechanism 14 are the same as those of the feeding mechanism 20, and will not be described in detail here.

[0053] The detection assembly 45 includes a detector (not shown), an upper detection group 50, and a lower detection group 60 that cooperates with the upper detection group 50. The upper detection group 50 and the lower detection group 60 are respectively disposed on the upper and lower sides of the turntable 41. The upper detection group 50 includes an upper mounting frame 51, an upper detection seat 53 that can move up and down in the upper mounting frame 51, and an upper detection driving mechanism 52 that controls the up and down movement of the upper detection seat 53. The upper detection driving mechanism 52 is a cylinder. A thrust spring 56 that always makes the upper detection seat 53 tend to move upward is provided on the upper mounting frame 51. A plurality of detection pressing blocks 55 that can move independently up and down are provided on the upper detection seat 53. Upper buffer springs 54 are provided between the plurality of detection pressing blocks 55 and the upper detection seat 53. The upper and lower ends of the upper buffer spring 54 are respectively in contact with the upper detection seat 53 and the detection pressing block 55. Probes 57 corresponding to the contacts on the product 38 to be measured are provided on the detection pressing blocks 55. The lower detection group 60 includes a lower mounting frame 61, a lower detection seat 65 that can move up and down in the lower mounting frame 61, and a lower detection driving mechanism 67 that controls the up and down movement of the lower detection seat 65. The lower detection driving mechanism 67 is a cylinder. A vertically arranged guide rod 66 is provided on the lower mounting frame 61. The lower detection seat 65 is movably connected to the guide rod 66. A plurality of detection top blocks 63 that can move independently up and down are provided on the lower detection seat 65. Lower buffer springs 64 are provided between the plurality of detection top blocks 63 and the lower detection seat 65. The upper and lower ends of the lower buffer spring 64 are respectively in contact with the detection top block 63 and the lower detection seat 65. The detection top block 63 is slidably connected to the lower mounting frame 61. A simulation ear 62 is provided on the detection top block 63. The carrier 42 has a through hole penetrating its upper and lower sides. During operation, the simulation ear 62 moves upward to fit with the lower end of the through hole. The detector is electrically connected to the probes 57 and the simulation ear 62, and can generate a frequency response curve according to the detected information.

[0054] The detection pressing block 55 has a receiving cavity 59 with an opening facing downward. An elastic pressing rod 58 for pressing the product 38 downward is provided in the receiving cavity 59. The lower end of the probe 57 is located in the receiving cavity 59, and the lower end of the elastic pressing rod 58 is lower than the lower end of the probe 57. A sealing ring (not shown) is provided at the opening edge of the receiving cavity 59. During operation, the sealing ring is in pressing contact with the upper end of the carrier 42 to play a sealing role, which can avoid interference from external noise during the detection of the product 38.

[0055] Working principle of the present invention: Workers stack the trays 29 loaded with products 38 to be tested into the tray stacking slot 21 of the feeding mechanism 20, and stack the empty trays 29 into the tray stacking slot 21 of the sorting and discharging mechanism 12. The telescopic cylinder 23 controls the contraction of the telescopic baffle 231, and the lowermost tray 29 drops onto the supporting plate 27. The reciprocating driving mechanism 24 controls the movement of the tray handling seat 25 to the product picking station 28. The feeding manipulator 30 picks the product 38 from the product picking station 28 and places it on the carrier 42 on the side of the turntable 41 close to the angle adjusting mechanism 43. While the feeding manipulator 30 is moving, the CCD vision mechanism 32 detects the contact angle on the product 38. The angle adjusting mechanism 43 controls the fixture to drive the product 38 to rotate a certain angle to complete positioning according to the information detected by the CCD. The turntable 41 starts to rotate. The upper detection driving mechanism 52 controls the upper detection seat 53 to drive the detection pressing block 55 to move downward. The lower end of the elastic pressing rod 58 presses against the product 38, the probe 57 presses against the contact, and the sealing ring abuts against the upper end of the carrier 42. At the same time, the lower detection driving mechanism 67 controls the lower detection seat 65 to drive the simulation ear 62 to move upward. The simulation ear 62 fits against the lower end of the through hole of the carrier 42, and the power is turned on. The detector detects the product 38 and generates a frequency response curve according to the detected information after the detection is completed. The discharging manipulator 31 classifies and places the product 38 into the corresponding finished product discharging mechanism 13 according to the detection result. The finished product discharging mechanism 13 stacks the trays 29 loaded with the tested products 38 in the tray stacking removal slot 22 to complete the detection operation.

[0056] In summary, the present invention realizes automatic detection by setting up a detection mechanism, a feeding mechanism, a sorting and discharging mechanism, and feeding and discharging manipulators. The feeding manipulator picks the product to be tested to the detection mechanism for frequency response curve detection. After the detection is completed, the discharging manipulator sorts the products with different curve ranges into the sorting mechanism, thus greatly improving the detection efficiency, reducing the production cost, and at the same time avoiding sorting chaos and preventing product mixing during subsequent production. By setting up the CCD vision mechanism and the angle adjusting mechanism to correct the product angle in advance, the detection accuracy and automation degree are improved. By setting multiple independent detection pressing blocks and detection top blocks, the probes on each detection pressing block and the simulation ears on each detection top block can move independently, and can ensure that the product is detected in place under the action of the buffer spring. By setting the thrust spring, the upper detection seat can be automatically lifted in the non-working state, and the probe can be kept away from the turntable to avoid being damaged. By setting the elastic pressing rod to tightly press the product downward to prevent gaps between the product and the carrier, and setting the sealing ring to avoid interference of external noises on the product detection.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical reality of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic frequency response curve tester, characterized in that, It includes a machine base, a detection mechanism, a feeding mechanism, and a sorting and discharging mechanism arranged on the machine base. The detection mechanism includes a turntable and detection components arranged on the periphery of the turntable. A carrier for fixing the product to be tested is provided on the turntable. A loading manipulator is arranged between the feeding mechanism and the turntable for taking the product to be tested on the feeding mechanism onto the carrier. A discharging manipulator is arranged between the sorting and discharging mechanism and the turntable for sorting the products that have completed the detection. The detection components include a detector, an upper detection group, and a lower detection group that cooperates with the upper detection group. The upper detection group and the lower detection group are respectively arranged on the upper and lower sides of the turntable. The upper detection group includes an upper detection seat and an upper detection driving mechanism for controlling the up and down movement of the upper detection seat. Probes corresponding to the contacts on the product to be tested are provided on the upper detection seat. The lower detection group includes a lower detection seat and a lower detection driving mechanism for controlling the up and down movement of the lower detection seat. A simulation ear corresponding to the product to be tested is provided on the lower detection seat. The detector is electrically connected to the probes and the simulation ear and can generate a frequency response curve according to the detected information.

2. The automatic frequency response curve tester according to claim 1, wherein A positioning component for positioning the product to be tested on the carrier is arranged outside the turntable. The positioning component includes a CCD vision mechanism for detecting the angle of the product to be tested and an angle adjustment mechanism for correcting the angle of the product to be tested. The CCD vision mechanism is arranged above the turntable.

3. The automatic frequency response curve tester according to claim 1, characterized in that, The feeding mechanism includes a tray stacking loading slot, a tray stacking unloading slot, a tray handling seat, and a reciprocating driving mechanism for controlling the reciprocating movement of the tray handling seat between the tray stacking loading slot and the tray stacking unloading slot. A supporting plate for supporting the tray is provided on the tray handling seat, and a feeding lifting mechanism for controlling the up and down movement of the supporting plate is provided. A product picking station is formed between the tray stacking loading slot and the tray stacking unloading slot.

4. The automatic frequency response curve tester according to claim 1, characterized in that, On one side of the turntable away from the feeding mechanism, there are multiple sorting and discharging stations set according to different detection results. The sorting and discharging mechanism is multiple finished product discharging mechanisms. The multiple finished product discharging mechanisms are arranged at the corresponding sorting and discharging stations and are arranged side by side.

5. The automatic frequency response curve tester according to claim 1, wherein, The loading manipulator includes a loading cross beam, a loading picking group arranged on the loading cross beam, and a loading driving mechanism for controlling the horizontal movement of the loading picking group. The discharging manipulator includes a discharging cross beam, a discharging picking group arranged on the discharging cross beam, and a discharging driving mechanism for controlling the horizontal movement of the discharging picking group. The loading picking group and the discharging picking group both have multiple picking parts arranged side by side. Each picking part can move up and down independently. The picking part includes a picking clamp, a clamping cylinder for controlling the movement of the picking clamp, and a picking lifting cylinder for controlling the up and down movement of the clamping cylinder.

6. The automatic frequency response curve tester according to claim 1, wherein The upper detection group further includes an upper mounting frame for mounting the upper detection seat. The upper detection seat is movably mounted up and down on the upper mounting frame. A thrust spring is provided on the upper mounting frame to make the upper detection seat always have a tendency to move upward.

7. The automatic frequency response curve tester according to claim 1, wherein The lower detection group further includes a lower mounting frame for mounting the lower detection seat. A vertically arranged guide rod is provided on the lower mounting frame. The lower detection seat is movably connected to the guide rod.

8. The automatic frequency response curve tester according to claim 1, characterized in that A plurality of detection pressing blocks that can move up and down independently are provided on the upper detection base. Upper buffer springs are provided between the plurality of detection pressing blocks and the upper detection base. The probe is provided on the detection pressing block. A plurality of detection top blocks that can move up and down independently are provided on the lower detection base. Lower buffer springs are provided between the plurality of detection top blocks and the lower detection base. The simulation ear is provided on the detection top block.

9. The automatic frequency response curve tester according to claim 8, characterized in that The detection pressing block has a receiving cavity with an opening facing downward. An elastic pressing rod for pressing the product downward is provided in the receiving cavity. The lower end of the probe is located in the receiving cavity, and the lower end of the elastic pressing rod is lower than the lower end of the probe. A sealing ring is provided at the opening edge of the receiving cavity.

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