A quality detection device for producing a plastic support of a loudspeaker

Abstract

The application relates to the detection field and particularly discloses a quality detection equipment for producing a plastic support of a loudspeaker, which comprises a detection box, a pressure detection mechanism, a tension detection mechanism, an auxiliary connecting mechanism and a lifting clamping mechanism, a flaw detector and a visual sensor are arranged in the detection box; from bottom to top, the pressure detection mechanism, the tension detection mechanism, the auxiliary connecting mechanism and the lifting clamping mechanism are sequentially arranged in the detection box; the pressure detection mechanism is used for detecting the pressure borne by the loudspeaker support; the tension detection mechanism is used for clamping the loudspeaker support and detecting the tension borne by the loudspeaker support; the auxiliary connecting mechanism is used for being arranged at the top end of the loudspeaker support; the lifting clamping mechanism is arranged in the detection box in a lifting mode and is used for clamping the auxiliary connecting mechanism and driving the auxiliary connecting mechanism to lift. The application can comprehensively detect the quality of the loudspeaker support.

Description

Technical Field

[0001] This application relates to the field of testing, and in particular to a quality testing device for the production of plastic brackets for loudspeakers. Background Technology

[0002] A loudspeaker, also known as a horn, is a device that converts electrical energy into sound energy and is widely used in various audio systems. When setting up a loudspeaker, to ensure sound quality and safety, it usually requires a matching speaker bracket. Speaker brackets are typically made of metal (such as steel, aluminum alloy, etc.) or plastic materials, possessing a certain degree of stability and load-bearing capacity to ensure the loudspeaker can be securely installed in the desired location.

[0003] In related technologies, during loudspeaker production, to ensure the quality of the loudspeaker bracket, a testing device is typically used to test the bracket's load-bearing capacity. This testing device usually includes a pressing device and a pressure testing device. By placing the bracket on the pressure testing device and pressing it down with the pressing device, the ultimate load-bearing capacity of the bracket is determined using the data from the pressure testing device.

[0004] The aforementioned technologies have the following drawbacks: Since the speaker bracket is mainly used for load-bearing, the quality assessment of the speaker bracket is relatively one-sided if only its compressive strength is tested during the testing process. Therefore, it is also necessary to test its tensile strength and stability on the ground. However, the testing direction of the aforementioned testing devices is relatively singular, making it difficult to comprehensively assess the quality of the speaker bracket. Summary of the Invention

[0005] In order to more comprehensively inspect the quality of speaker brackets, this application provides a quality inspection device for producing plastic speaker brackets.

[0006] This application provides a quality inspection device for producing plastic speaker brackets, which adopts the following technical solution:

[0007] A quality inspection device for producing plastic brackets for loudspeakers, characterized in that it includes an inspection box, a pressure testing mechanism, a tensile testing mechanism, an auxiliary connecting mechanism, and a lifting and clamping mechanism, wherein the inspection box is equipped with a flaw detector and a vision sensor;

[0008] From bottom to top, the pressure detection mechanism, the tensile force detection mechanism, the auxiliary connection mechanism, and the lifting clamping mechanism are sequentially installed inside the detection box;

[0009] The pressure detection mechanism is used to detect the pressure borne by the speaker bracket;

[0010] The tensile testing mechanism is used to clamp the speaker bracket and detect the tensile force borne by the speaker bracket in the circumferential direction;

[0011] The auxiliary connection mechanism is used to be installed on the top of the speaker bracket; the lifting clamping mechanism is installed in the detection box in a height-adjustable manner, and is used to clamp the auxiliary connection mechanism and drive the auxiliary connection mechanism to move up and down.

[0012] By adopting the above technical solution, after the speaker bracket is placed on the pressure testing mechanism, the lower end of the speaker bracket is clamped by the tensile testing mechanism, the auxiliary connecting mechanism is installed on the top of the speaker bracket, and the lifting clamping mechanism is used to press down and clamp the auxiliary connecting mechanism. When testing the compressive performance of the speaker bracket, the lifting clamping mechanism presses down on the auxiliary connecting mechanism, thereby pressing the speaker bracket onto the pressure testing mechanism. The pressure testing mechanism detects the pressure borne by the speaker bracket, and the flaw detector and visual sensor detect the damage and deformation of the speaker bracket under different pressures. When testing the horizontal stability performance of the speaker bracket, within the specified bearing capacity range of the speaker bracket, the tensile testing mechanism will be pulled towards the side in which the speaker bracket deviates. By using the abnormal tensile force data in the corresponding direction, it can be determined that the speaker bracket is unstable in that direction and is prone to tilting in that direction. This facilitates subsequent process adjustments by technicians to reinforce that side. If the tensile testing mechanism detects that the tensile force borne by the speaker bracket in the circumferential direction is consistent, or the error of the circumferential tensile force data is within the allowable range, it indicates that the speaker bracket is very stable within the bearing capacity range and is not easy to tip over. When testing the tensile performance of the speaker bracket, the lifting clamping mechanism holds the auxiliary connecting mechanism and pulls it upward. The tensile testing mechanism detects the tensile data of the speaker bracket, while the flaw detector and visual sensor detect the damage and deformation of the speaker bracket under different tensile forces. In summary, this application, through the coordinated operation of the pressure testing mechanism, tensile testing mechanism, auxiliary connecting mechanism, and lifting clamping mechanism, can achieve the testing of the compressive performance, tensile performance, and horizontal stability of the speaker bracket. By performing multi-directional testing of the speaker bracket, the quality inspection of the speaker bracket is made more comprehensive.

[0013] Optionally, the pressure detection mechanism includes a detection platform, a pressure sensor, and a pressure plate, which are connected in sequence from bottom to top; the detection platform is mounted on the detection box in a height-adjustable manner.

[0014] By adopting the above technical solution, it is easy to load materials and adapt to speaker brackets of various heights.

[0015] Optionally, the tensile testing mechanism includes an arc-shaped tube, an arc-shaped ring, two V-shaped clamping plates, and multiple tensile testing telescopic swing arms, wherein the arc-shaped tube is vertically positioned at the center of the pressure plate.

[0016] The inner side of the curved tube is provided with two V-shaped clamping plates arranged opposite each other. The two V-shaped clamping plates are symmetrically arranged on both sides of the axis of the curved tube and the first notch.

[0017] Each of the two V-shaped clamping plates is provided with a lead screw that is slidably connected to the superior arc tube and a first elastic telescopic member that is parallel to the lead screw. The two lead screws are coaxial and are both arranged along the radial direction of the superior arc tube.

[0018] The lead screw is provided with a driven gear that is screwed to it, and the driven gear is rotatably mounted on the outer wall of the curved tube.

[0019] One end of the first elastic telescopic member is connected to the V-shaped clamping plate, and the other end is connected to the large arc tube;

[0020] The superior arc ring is coaxially and rotatably mounted on one end of the superior arc tube, and the superior arc ring is provided with two arc-shaped toothed rings that mesh with the two driven gears in a one-to-one correspondence.

[0021] Multiple tension detection telescopic swing arms are distributed along the circumference of the curved tube, with one end of each arm hinged to the curved tube and the other end hinged to the detection box.

[0022] By employing the above technical solution, after the speaker bracket support rod passes through the first and second notches, it is positioned between two V-shaped clamping plates. This causes the arc-shaped gear ring to rotate, which in turn drives the driven gear to rotate. Consequently, the two lead screws move closer together, and the two V-shaped clamping plates move closer together and clamp the support rod. The relative position of the two V-shaped clamping plates is stabilized through the mutual friction between the lead screws and the driven gear, as well as the elastic force of the first elastic telescopic component, achieving rapid clamping and fixing of the support rod. After fixing the speaker bracket, the height of the testing platform is adjusted so that the tensile testing telescopic arm is in a horizontal position, facilitating subsequent testing of the speaker bracket's horizontal stability and tensile performance.

[0023] Optionally, the front of the testing box is provided with a door, and the first notch of the arc-shaped tube is positioned directly opposite the door.

[0024] By adopting the above technical solution, it is convenient to directly load materials through the first notch after opening the box door.

[0025] Optionally, the tension detection telescopic swing arm includes a tension sensor and a second elastic telescopic component. One end of the tension sensor is connected to one end of the second elastic telescopic component, the other end of the tension sensor is hinged to the detection box, and the other end of the second elastic telescopic component is hinged to the curved tube.

[0026] By adopting the above technical solution, multiple tension sensors are used to detect the tension force borne by the speaker bracket in the circumferential direction, and the second elastic telescopic component prevents the tension sensors from being damaged by sudden tensile impact.

[0027] Optionally, the tension detection telescopic swing arm further includes a straight tube, a limiting ring, a straight rod, and a limiting component. One end of the straight tube is closed, and the other end has an opening. The closed end of the straight tube is connected to one end of the tension sensor, and the open end of the straight tube is provided with a coaxial limiting ring.

[0028] The inner side of the limiting ring is provided with an axially sliding straight rod. One end of the straight rod is hinged to the curved tube, and the other end is provided with a limiting member located between the limiting ring and the closed end of the straight tube.

[0029] The second elastic telescopic member is disposed inside the straight tube, with one end connected to the limiting member and the other end connected to the closed end of the straight tube.

[0030] By adopting the above technical solution, the stretching stroke of the second elastic telescopic member is limited, thereby preventing the second elastic telescopic member from being damaged due to excessive stretching.

[0031] Optionally, the auxiliary connection mechanism includes a base plate, a V-shaped plate, and a spherical groove. The base plate is used to connect to the top of the speaker bracket; the V-shaped plate is inverted and mounted on the base plate; and the spherical groove is installed at the top of the V-shaped plate.

[0032] The lifting and clamping mechanism includes a lifting component, a clamping assembly, and a ball head. From top to bottom, the top of the detection box, the lifting component, the clamping assembly, and the ball head are connected in sequence.

[0033] The clamping assembly is used to clamp the V-shaped plate;

[0034] The ball head is used to extend into the spherical groove, and the ball head is able to roll within the spherical groove.

[0035] By adopting the above technical solution, when testing the compressive performance of the speaker bracket, the lifting component drives the ball head to descend and press against the spherical groove, thereby compressing the speaker bracket. When testing the horizontal stability of the speaker bracket, if the speaker bracket is unstable and shifts to the side within the specified compressive range, the ball head can roll within the spherical groove. Therefore, the ball head does not restrict the lateral shift of the speaker bracket when compressing it. When the speaker bracket tilts to one side due to instability, it will pull the tension sensor on the opposite side. The tension data of the tension sensor on the pulled side will be greater than the data of the other tension sensors. At this time, it is possible to determine which side the speaker bracket is prone to tilting, which facilitates subsequent adjustment processes to reinforce that side. When testing the tensile performance of the speaker bracket, the clamping assembly clamps the V-shaped plate, and the lifting component pulls the speaker bracket upward. This, combined with the tensile testing mechanism, flaw detector, and vision sensor, detects the tensile performance of the speaker bracket.

[0036] Optionally, the clamping assembly includes a third elastic telescopic member, two hook-shaped plates, and two diagonal rods that correspond one-to-one with the two hook-shaped plates. The third elastic telescopic member is vertically arranged at the bottom end of the lifting member.

[0037] The first end and the second end of the third elastic telescopic member are respectively provided with a first base and a second base. The first base is connected to the bottom end of the lifting member, and the ball head is installed at the lower end of the second base.

[0038] The two hook-shaped plates correspond one-to-one with the two side plates of the two V-shaped plates. The hook-shaped plate has a long handle and a V-shaped hook at the first end of the long handle. The second end of the long handle is hinged to the first base. The V-shaped hook is used to hook the lower end of the corresponding side plate.

[0039] The inclined rod is located above the second base, with one end of the inclined rod hinged to the middle of the corresponding long handle and the other end hinged to the second base.

[0040] By adopting the above technical solution, the lifting component shortens, the compressed third elastic telescopic component returns to its original length, the first base and the second base move away from each other, the diagonal rod rotates, pulling the hook-shaped plate downwards until the lower end of the side plate is located inside the V-shaped hook. Then, after the lifting component further shortens, the V-shaped hook can pull up the V-shaped plate, thereby achieving mutual fixation between the clamping assembly and the V-shaped plate.

[0041] Optionally, the clamping assembly further includes a limiting tube and a limiting rod, the limiting rod being coaxial with the lifting member, one end of which is connected to the second base, and the other end of which is connected to the second end of the third elastic telescopic member;

[0042] The limiting tube is sleeved on the third elastic telescopic member and the limiting rod. One end of the limiting tube is connected to the first base, and the other end is slidably connected to the limiting rod. It can also abut against the second base.

[0043] By adopting the above technical solution, the shortening stroke of the third elastic telescopic component is limited, thus preventing the third elastic telescopic component from being over-compressed and damaged.

[0044] In summary, this application includes at least one of the following beneficial technical effects:

[0045] 1. In this application, through the coordinated operation of the pressure testing mechanism, the tensile testing mechanism, the auxiliary connecting mechanism and the lifting clamping mechanism, the compressive performance, tensile performance and horizontal stability of the speaker bracket can be tested by simply adjusting the height of the lifting clamping mechanism during the testing process. By conducting multi-directional testing of the speaker bracket, the quality testing of the speaker bracket is made more comprehensive.

[0046] 2. In this application, after the speaker bracket support rod passes through the first and second notches, the support rod is positioned between the two V-shaped clamping plates. This causes the arc-shaped gear ring to rotate, which in turn drives the driven gear to rotate. Consequently, the two lead screws move closer together, and the two V-shaped clamping plates move closer together and clamp the support rod. The relative position of the two V-shaped clamping plates is stabilized through the mutual friction between the lead screws and the driven gear, as well as the elastic force of the first elastic telescopic member, achieving rapid clamping and fixing of the support rod.

[0047] 3. In this application, after fixing the speaker bracket, the height of the testing platform is adjusted so that the tensile testing telescopic arm is in a horizontal position, which facilitates the subsequent testing of the horizontal stability and tensile performance of the speaker bracket.

[0048] 4. In this application, when testing the compressive performance of the speaker bracket, the lifting component drives the ball head to descend and press against the spherical groove, thereby compressing the speaker bracket. When testing the horizontal stability of the speaker bracket, if the speaker bracket is unstable and shifts to the side within the specified compressive range, since the ball head can roll within the spherical groove, the ball head will not restrict the speaker bracket from shifting to the side when compressing it. When the speaker bracket tilts to one side due to instability, it will pull the tension sensor on the opposite side. The tension data of the tension sensor on the pulled side will be greater than the data of the other tension sensors. At this time, it is possible to determine which side the speaker bracket is prone to tilting, which facilitates subsequent adjustment processes to reinforce that side.

[0049] 5. In this application, the lifting component shortens, the compressed third elastic telescopic component returns to its original length, the first base and the second base move away from each other, the inclined rod rotates, pulling the hook plate downwards until the lower end of the side plate is located inside the V-shaped hook, and then the lifting component shortens further, so that the V-shaped hook can pull up the V-shaped plate, thereby achieving mutual fixation between the clamping component and the V-shaped plate.

[0050] 6. In this application, when testing the compressive performance of the speaker bracket, the lifting component extends, allowing the ball head to enter the spherical groove and abut against the lowest part of the groove. Then, the lifting component further extends, causing the ball head to press down on the spherical groove, thereby compressing the speaker bracket. During the test of the speaker bracket's compressive performance, if the speaker bracket meets the quality standards, it will remain vertical or shift laterally within the error range. If the speaker bracket shifts excessively to the side, the ball head can rotate relative to the spherical groove, allowing unrestricted lateral movement of the speaker bracket, thus facilitating the force sensor's determination of which side of the speaker bracket is unstable. Simultaneously, during the compression process of the speaker bracket, the third elastic telescopic component will be compressed and shortened. At this time, the limiting tube descends to a certain distance and abuts against the top of the second base, preventing excessive compression of the third elastic telescopic component. Furthermore, as the first and second bases approach each other, the swing arm rotates, pushing the hook plate upwards.

[0051] 7. In this application, when testing the tensile performance of the speaker bracket, the lifting component shortens. During the resetting process of the elastic telescopic component, the first base and the second base move away from each other, and the swing arm rotates, causing the hook plate to rotate downwards until the lower end of the side plate is located inside the V-shaped hook. Then, after the lifting component shortens further, the V-shaped hook can pull up the V-shaped plate. In conjunction with the tensile testing mechanism, the tensile performance of the speaker bracket can be tested. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0054] Figure 2 This is a schematic diagram of the overall structure of the tensile testing mechanism;

[0055] Figure 3 This is a schematic diagram of the cross-sectional structure of the second elastic expansion joint;

[0056] Figure 4 This is a schematic diagram of the overall structure of the auxiliary connecting mechanism and the lifting clamping mechanism;

[0057] Figure 5 This is an exploded structural diagram of the third elastic expansion joint.

[0058] Figure label:

[0059] 1. Inspection box; 11. Box door; 12. Flaw detector; 13. Vision sensor; 2. Pressure detection mechanism; 21. Inspection table; 22. Pressure sensor; 23. Pressure plate; 3. Tensile force detection mechanism; 31. Curved circular tube; 3101. First notch; 32. V-shaped clamping plate; 321. Lead screw; 322. Driven gear; 323. First elastic telescopic component; 33. Curved circular ring; 3301. Second notch; 331. Arc-shaped toothed ring; 332. Handle; 34. Tensile force detection telescopic swing arm; 341. Tensile force sensor; 342. Second elastic telescopic component Components; 343, Straight tube; 344, Limiting ring; 345, Straight rod; 346, Limiting component; 4, Auxiliary connecting mechanism; 41, Base plate; 42, Column; 43, V-shaped plate; 431, Side plate; 44, Spherical groove; 5, Lifting clamping mechanism; 51, Lifting component; 52, Clamping assembly; 521, Third elastic telescopic component; 522, First base; 523, Second base; 524, Limiting insertion tube; 525, Limiting insertion rod; 526, Diagonal rod; 527, Hook-shaped plate; 528, Long handle; 529, V-shaped hook; 53, Ball head; 6, Speaker bracket. Detailed Implementation

[0060] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0061] This application discloses a quality inspection device for manufacturing plastic speaker brackets. (Refer to...) Figure 1 A quality inspection device for producing speaker plastic brackets includes an inspection box 1, a pressure testing mechanism 2, a tensile testing mechanism 3, an auxiliary connecting mechanism 4, and a lifting and clamping mechanism 5. The inspection box 1 has a door 11 on its front. Inside the inspection box 1, a flaw detector 12 and a vision sensor 13 are installed for inspecting the condition of the speaker bracket 6. From bottom to top, the pressure testing mechanism 2, the tensile testing mechanism 3, the auxiliary connecting mechanism 4, and the lifting and clamping mechanism 5 are sequentially installed inside the inspection box 1.

[0062] Reference Figure 1Specifically, the pressure detection mechanism 2 includes a detection platform 21, a pressure sensor 22, and a pressure plate 23. The detection platform 21 is horizontally installed on the inner bottom of the detection box 1, and is vertically and liftably mounted on the detection box 1. The detection platform 21 can be raised and lowered using conventional methods. The pressure plate 23 is horizontally positioned above the detection platform 21 and is slidably connected to the detection box 1 in the vertical direction. The pressure sensor 22 is located between the detection platform 21 and the pressure plate 23, and is connected to both. An auxiliary connecting mechanism 4 is used to install on the top of the speaker bracket 6, and a lifting clamping mechanism 5 is used to press down or clamp the auxiliary connecting mechanism 4.

[0063] Reference Figure 1 In this embodiment, the speaker bracket 6 to be tested is placed on the pressure plate 23. The lifting clamping mechanism 5 presses down on the speaker bracket 6 through the pressing auxiliary connecting mechanism 4. The pressure sensor 22 detects the pressure on the speaker bracket 6. The flaw detector 12 and the vision sensor 13 detect the damage and deformation of the speaker bracket 6 under different pressures.

[0064] Reference Figure 1 , Figure 2 and Figure 3 Specifically, the tensile testing mechanism 3 includes an arc-shaped tube 31, a V-shaped clamping plate 32, an arc-shaped ring 33, and a tensile testing telescopic swing arm 34. The arc-shaped tube 31 is vertically spaced at the center of the pressure plate 23, and the first notch 3101 of the arc-shaped tube 31 faces the door 11. Two opposing V-shaped clamping plates 32 are provided on the inner side of the arc-shaped tube 31, symmetrically arranged on both sides of the axis of the arc-shaped tube 31 and the first notch 3101. Each of the two V-shaped clamping plates 32 has a lead screw 321 slidably connected to the arc-shaped tube 31 and a first elastic telescopic member 323 parallel to the lead screw 321 at its opposite ends. The two lead screws 321 are coaxial and both are arranged along the radial direction of the arc-shaped tube 31. The lead screw 321 is provided with a driven gear 322 that is screwed onto it. The driven gear 322 is located on the outside of the curved tube 31 and is rotatably connected to the curved tube 31. One end of the first elastic telescopic member 323 is connected to the V-shaped clamping plate 32, and the other end is connected to the curved tube 31.

[0065] Reference Figure 1 , Figure 2 and Figure 3A coaxial curved ring 33 is provided above the curved tube 31. The curved ring 33 is slidably connected to the curved tube 31 circumferentially. The curved ring 33 has a coaxial curved dovetail slide rail, and the curved tube 31 has a coaxial curved dovetail groove. The curved dovetail slide rail slides within the curved dovetail groove, ensuring that while the curved ring 33 is slidably connected to the curved tube 31, it does not easily axially separate from the curved tube 31. Two opposing arc-shaped toothed rings 331 are provided on the sidewall of the curved ring 33, symmetrically positioned on both sides of the second notch 3301 of the curved tube 31. The two arc-shaped toothed rings 331 correspond one-to-one with two driven gears 322, and mesh with their respective driven gears 322. A handle 332 is connected to the upper part of the arc ring 33. The handle 332 is positioned to avoid the second notch 3301, and the handle 332 makes it easy for the operator to rotate the arc ring 33.

[0066] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the tensile testing mechanism 3 is used to clamp the lower end of the support rod of the speaker bracket 6 to be tested. After the support rod passes through the first notch 3101 and the second notch 3301, the support rod is positioned between the two V-shaped clamping plates 32. Then, the arc ring 33 is rotated by the handle 332, causing the arc toothed ring 331 to rotate. The arc toothed ring 331 then drives the driven gear 322 to rotate, thereby causing the two lead screws 321 to move closer synchronously, and thus causing the two V-shaped clamping plates 32 to move closer synchronously and clamp the support rod.

[0067] Reference Figure 1 , Figure 2 and Figure 3 The outer wall of the curved tube 31 is provided with multiple circumferentially distributed tension detection telescopic arms 34. One end of the tension detection telescopic arm 34 is hinged to the curved tube 31, and the other end is hinged to the detection box 1. The tension detection telescopic arm 34 includes a tension sensor 341 and a second elastic telescopic member 342. The first end of the tension sensor 341 is hinged to the detection box 1, and the second end of the tension sensor 341 is connected to the first end of the second elastic telescopic member 342. The second end of the second elastic telescopic member 342 is hinged to the curved tube 31.

[0068] Reference Figure 1 , Figure 2 and Figure 3Specifically, the tension detection telescopic swing arm 34 also includes a straight tube 343, a limiting ring 344, a straight rod 345, and a limiting member 346. One end of the straight tube 343 is closed, and the other end is open. The closed end of the straight tube 343 is connected to one end of the tension sensor 341. The open end of the straight tube 343 is provided with a coaxial limiting ring 344. The inner side of the limiting ring 344 is provided with an axially sliding straight rod 345. One end of the straight rod 345 is hinged to the curved tube 31, and the other end is provided with a limiting member 346. The limiting member 346 is located between the limiting ring 344 and the closed end of the straight tube 343. A second elastic telescopic member 342 is connected between the limiting member 346 and the closed end of the straight tube 343. The straight tube 343, the limiting ring 344, the straight rod 345, and the limiting member 346 work together to limit the extension stroke of the second elastic telescopic member 342 and prevent the second elastic telescopic member 342 from being overstretched.

[0069] Reference Figure 1 , Figure 2 and Figure 3 When testing the compressive performance of the speaker bracket 6, under the weight of the speaker bracket 6 and the tension detection telescopic swing arm 34, the second elastic telescopic member 342 and the tension sensor 341 naturally droop. Then, the lifting clamping mechanism 5 presses down on the speaker bracket 6 by pressing down the auxiliary connecting mechanism 4.

[0070] Reference Figure 1 , Figure 2 and Figure 3 When testing the horizontal stability of the speaker bracket 6, the test is conducted during the testing of the speaker bracket 6's compressive performance. When the lifting clamping mechanism 5 presses down on the speaker bracket 6, if the speaker bracket 6 tilts or shifts to one side due to instability, it will pull the tension sensor 341 on the opposite side. The tension data of the tension sensor 341 on the pulled side will be significantly greater than the data of the other tension sensors 341. At this time, it is possible to determine which side the speaker bracket 6 is prone to tilting, and thus determine which side of the speaker bracket 6 is unstable, which facilitates subsequent optimization of the processing technology of that side and improvement of its strength.

[0071] Reference Figure 1 , Figure 2 and Figure 3When testing the tensile performance of the speaker bracket 6, the lifting clamping mechanism 5 clamps the auxiliary connecting mechanism 4 and pulls the speaker bracket 6 upward. During this process, the second elastic telescopic member 342 first shortens and then lengthens to accommodate the upward movement of the speaker bracket 6. After the second elastic telescopic member 342 is stretched to its limit length, the limiting member 346 and the limiting ring 344 make rigid contact, simultaneously limiting the stretching length of the second elastic telescopic member 342 and preventing overstretching. During the upward pulling of the speaker bracket 6 by the lifting clamping mechanism 5, the tension sensor 341 detects the tension data, thereby determining the tensile performance of the tension sensor 341.

[0072] Reference Figure 1 , Figure 4 and Figure 5 Specifically, the auxiliary connection mechanism 4 includes a base plate 41, a column 42, a V-shaped plate 43, and a spherical groove 44. The base plate 41 has a connection hole for connecting to the top of the speaker bracket 6. The base plate 41 is bolted to the top of the speaker bracket 6 through the connection hole and a bolt connection pair. The V-shaped plate 43 is inverted and positioned above the base plate 41, with the groove of the V-shaped plate 43 facing the base plate 41 and one end of the V-shaped plate 43 facing the door 11 along its length. The column 42 connects the middle of the inner wall of the V-shaped plate 43 to the base plate 41, and the two side plates 431 of the V-shaped plate 43 are symmetrically arranged about the column 42 as an axis of symmetry. A spherical groove 44 is provided above the V-shaped plate 43, connected to the V-shaped plate 43 and coaxial with the column 42.

[0073] Reference Figure 1 , Figure 4 and Figure 5 The lifting and clamping mechanism 5 includes a lifting component 51, a clamping assembly 52, and a ball head 53. The lifting component 51 is vertically arranged and is a conventional lifting component such as a hydraulic cylinder. The top end of the lifting component 51 is connected to the inner top of the detection box 1, and the bottom end of the lifting component 51 is connected to the clamping assembly 52. ​​The ball head 53 is mounted on the clamping assembly 52 and is coaxial with the lifting component 51, used to extend into the spherical groove 44 and roll within the spherical groove 44.

[0074] Reference Figure 1 , Figure 4 and Figure 5 The clamping assembly 52 includes a third elastic telescopic member 521, two hook-shaped plates 527, and two diagonal rods 526 corresponding to the two hook-shaped plates 527. The third elastic telescopic member 521 is vertically mounted at the bottom end of the lifting member 51. The first end and the second end of the third elastic telescopic member 521 are respectively provided with a first base 522 and a second base 523. The first base 522 is connected to the bottom end of the lifting member 51. A ball head 53 is installed at the lower end of the second base 523.

[0075] Reference Figure 1 , Figure 4 and Figure 5 Two hook-shaped plates 527 correspond one-to-one with two side plates 431. Each hook-shaped plate 527 has a long handle 528 and a V-shaped hook 529 at the first end of the long handle 528. The second end of the long handle 528 is hinged to the first base 522, and the V-shaped hook 529 is used to hook the lower end of the corresponding side plate 431. A diagonal rod 526 is located above the second base 523, with one end hinged to the middle of the corresponding long handle 528 and the other end hinged to the second base 523.

[0076] Reference Figure 1 , Figure 4 and Figure 5 The clamping assembly 52 also includes a limiting tube 524 and a limiting rod 525. The limiting rod 525 is coaxial with the lifting member 51, with one end connected to the second base 523 and the other end connected to the second end of the third elastic telescopic member 521. The limiting tube 524 is sleeved on the third elastic telescopic member 521 and the limiting rod 525. One end of the limiting tube 524 is connected to the first base 522, and the other end is slidably connected to the limiting rod 525, and can also abut against the second base 523.

[0077] Reference Figure 1 , Figure 4 and Figure 5 When testing the compressive performance of the speaker bracket 6, the lifting member 51 extends, allowing the ball head 53 to enter the spherical groove 44 and abut against the lowest part of the spherical groove 44. Then, the lifting member 51 extends further, causing the ball head 53 to press down on the spherical groove 44, thereby compressing the speaker bracket 6. During the test of the compressive performance of the speaker bracket 6, if the quality of the speaker bracket 6 meets the standard, the speaker bracket 6 can remain in a vertical position, or shift to the side within the error range. If the speaker bracket 6 shifts to the side excessively, the ball head 53 can rotate relative to the spherical groove 44, making the lateral movement of the speaker bracket 6 unrestricted, thus facilitating the force sensor 341 to determine which side of the speaker bracket 6 is unstable. Meanwhile, during the compression of the speaker bracket 6, the third elastic telescopic member 521 will be compressed and shortened. At this time, the limiting tube 524 descends to a certain distance and abuts the top of the second base 523 to prevent the third elastic telescopic member 521 from being over-compressed. Moreover, at this time, as the first base 522 and the second base 523 approach each other, the swing arm rotates and pushes the hook plate 527 upward.

[0078] Reference Figure 1 , Figure 4 and Figure 5When testing the tensile performance of the speaker bracket 6, the lifting member 51 shortens. During the resetting process of the elastic telescopic member, the first base 522 and the second base 523 move away from each other, and the swing arm rotates, causing the hook plate 527 to rotate downwards until the lower end of the side plate 431 is located inside the V-shaped hook 529. Then, after the lifting member 51 shortens further, the V-shaped hook 529 can pull up the V-shaped plate 43. In conjunction with the tensile force detection mechanism 3, the tensile performance of the speaker bracket 6 can be tested.

[0079] The implementation principle of a quality inspection device for producing speaker plastic brackets in this application is as follows:

[0080] First, fix the speaker bracket 6 and place it on the pressure plate 23. After passing the support rod of the speaker bracket 6 through the first notch 3101 and the second notch 3301, position the support rod between the two V-shaped clamping plates 32. Then, rotate the arc ring 33 by the handle 332 to rotate the arc toothed ring 331, which in turn drives the driven gear 322 to rotate. This causes the two lead screws 321 to move closer together, which in turn causes the two V-shaped clamping plates 32 to move closer together and clamp the support rod. The relative position of the two V-shaped clamping plates 32 is stabilized by the mutual friction between the lead screws 321 and the driven gear 322, as well as the elastic force of the first elastic telescopic member 323, achieving rapid clamping and fixing of the support rod. After fixing the speaker bracket 6, adjust the height of the detection platform 21 so that the tension detection telescopic swing arm 34 is in a horizontal position. The top of the speaker bracket 6 is connected to the base plate 41 of the auxiliary connecting mechanism 4 by bolts. Then, the lifting clamping mechanism 5 descends, causing the ball head 53 to extend into the spherical groove 44. At this time, the arc tube 31, support rod, column 42, spherical groove 44, ball head 53, lifting component 51, and third elastic telescopic component 521 are coaxial.

[0081] When testing the pressure resistance of the speaker bracket 6, the lifting member 51 extends, causing the ball head 53 to press down on the spherical groove 44, thereby pressing down on the speaker bracket 6. The speaker bracket 6 is compressed, and the pressure sensor 22 detects the pressure exerted on it. The flaw detector 12 and the vision sensor 13 detect damage and deformation of the speaker bracket 6 under different pressures. If the speaker bracket 6 meets the quality standards, it will remain vertical or shift to the side within the error range. Simultaneously, during the compression process, the third elastic telescopic member 521 will be compressed and shortened. At this time, the limiting tube 524 descends to a certain distance and abuts against the top of the second base 523, preventing the third elastic telescopic member 521 from being over-compressed. Furthermore, as the first base 522 and the second base 523 approach each other, the swing arm rotates, pushing the hook plate 527 upwards.

[0082] When testing the horizontal stability of the speaker bracket 6, the lateral stability of the speaker bracket 6 is tested simultaneously with the compressive strength of the speaker bracket 6. When the lifting clamping mechanism 5 presses down on the speaker bracket 6, if the speaker bracket 6 tilts or shifts towards that side due to instability on one side, it will pull the tension sensor 341 on the opposite side. The tension data of the tension sensor 341 on the side that is being pulled will be greater than the data of the other tension sensors 341.

[0083] Within the specified pressure range of the speaker bracket 6, it is possible to determine which side the speaker bracket 6 is prone to tilting, and thus determine which side of the speaker bracket 6 is unstable, thereby facilitating subsequent optimization of the processing technology of that side and improvement of its strength. If the tensile testing mechanism 3 detects that the tensile force borne by the speaker bracket 6 in the circumferential direction is consistent, or if the error of the circumferential tensile force data is within the allowable range, it indicates that the speaker bracket 6 is very stable within the pressure range and is not easy to tilt.

[0084] The ball head 53 can roll within the spherical groove 44. The interaction between the ball head 53 and the spherical groove 44 causes the speaker bracket 6 to shift laterally under pressure. The lifting clamping mechanism 5 does not restrict the shift of the speaker bracket 6, ensuring that the shift of the speaker bracket 6 can be effectively detected by the tension sensor 341. When the shift of the speaker bracket 6 is relatively small, the tension sensor 341 is primarily used. When the shift of the speaker bracket 6 is relatively large, the tension sensor 341 and the vision sensor 13 jointly detect the degree of shift of the speaker bracket 6.

[0085] When testing the tensile performance of the speaker bracket 6, the lifting member 51 shortens, the compressed third elastic telescopic member 521 returns to its original length, the first base 522 and the second base 523 move away from each other, the inclined rod 526 rotates, pulling the hook plate 527 downward until the lower end of the side plate 431 is located inside the V-shaped hook 529. Then, after the lifting member 51 shortens further, the V-shaped hook 529 can pull the V-shaped plate 43 upward. As the lifting member 51 shortens again, the speaker bracket 6 is pulled upward. During the upward movement of the speaker bracket 6, the second elastic telescopic member 342 is stretched to cooperate with the upward movement of the speaker bracket 6. After the second elastic telescopic member 342 is stretched to its limit length, the limiting member 346 and the limiting ring 344 make rigid contact, thereby limiting the stretching length of the second elastic telescopic member 342 and preventing it from being overstretched. During the process of lifting and clamping mechanism 5 pulling the speaker bracket 6 upward, tension sensor 341 detects tension data and then judges the tensile performance of tension sensor 341. Flaw detector 12 and vision sensor 13 detect the damage and deformation of speaker bracket 6 under different tensions.

[0086] In summary, this application, through the coordinated operation of the pressure testing mechanism 2, the tensile testing mechanism 3, the auxiliary connecting mechanism 4, and the lifting clamping mechanism 5, allows for the testing of the speaker bracket 6's compressive performance, tensile performance, and horizontal stability by simply adjusting the height of the lifting clamping mechanism 5 during the testing process. By conducting multi-directional testing of the speaker bracket 6, the quality testing of the speaker bracket 6 becomes more comprehensive.

[0087] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0088] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quality inspection device for producing plastic speaker brackets, characterized in that: It includes a testing box, a pressure testing mechanism, a tensile testing mechanism, an auxiliary connecting mechanism, and a lifting and clamping mechanism. The testing box is equipped with a flaw detector and a vision sensor. From bottom to top, the pressure detection mechanism, the tensile force detection mechanism, the auxiliary connection mechanism, and the lifting clamping mechanism are sequentially installed inside the detection box; The pressure detection mechanism is used to detect the pressure borne by the speaker bracket; The tensile testing mechanism is used to clamp the speaker bracket and detect the tensile force borne by the speaker bracket in the circumferential direction; The auxiliary connection mechanism is used to install on the top of the speaker bracket; The lifting clamping mechanism is used to clamp the auxiliary connecting mechanism and drive the auxiliary connecting mechanism to move up and down. The tensile testing mechanism includes an arc-shaped tube, an arc-shaped ring, two V-shaped clamping plates, and multiple tensile testing telescopic swing arms. The inner side of the curved tube is provided with two V-shaped clamping plates that are arranged opposite each other, and the two V-shaped clamping plates are symmetrically arranged on both sides of the axis of the curved tube. Each of the two V-shaped clamping plates is provided with a lead screw that is slidably connected to the superior arc tube and a first elastic telescopic member parallel to the lead screw at one of its opposite ends; The lead screw is provided with a driven gear that is screwed to it, and the driven gear is rotatably mounted on the outer wall of the curved tube. One end of the first elastic telescopic member is connected to the V-shaped clamping plate, and the other end is connected to the large arc tube; The superior arc ring is coaxially and rotatably mounted on one end of the superior arc tube, and the superior arc ring is provided with two arc-shaped toothed rings that mesh with the two driven gears in a one-to-one correspondence. Multiple tension detection telescopic swing arms are distributed along the circumference of the curved tube, and one end of each tension detection telescopic swing arm is hinged to the curved tube and the other end is hinged to the detection box. The auxiliary connection mechanism includes a base plate, a V-shaped plate, and a spherical groove. The base plate is used to connect to the top of the speaker bracket; the V-shaped plate is mounted upside down on the base plate; and the spherical groove is installed on the top of the V-shaped plate. The lifting and clamping mechanism includes a lifting component, a clamping assembly, and a ball head. From top to bottom, the top of the detection box, the lifting component, the clamping assembly, and the ball head are connected in sequence. The clamping assembly is used to clamp the V-shaped plate; The ball head is used to extend into the spherical groove; The clamping assembly includes a third elastic telescopic member, two hook-shaped plates, and two diagonal rods that correspond one-to-one with the two hook-shaped plates. The third elastic telescopic member is vertically arranged at the bottom end of the lifting member. The first end and the second end of the third elastic telescopic member are respectively provided with a first base and a second base. The first base is connected to the bottom end of the lifting member, and the ball head is installed at the lower end of the second base. The two hook-shaped plates correspond one-to-one with the two side plates of the two V-shaped plates. The hook-shaped plate has a long handle and a V-shaped hook at the first end of the long handle. The second end of the long handle is hinged to the first base. The V-shaped hook is used to hook the lower end of the corresponding side plate. The diagonal rod is located above the second base, with one end hinged to the middle of the corresponding long handle and the other end hinged to the second base.

2. The quality inspection equipment for producing speaker plastic brackets according to claim 1, characterized in that: The pressure detection mechanism includes a detection platform, a pressure sensor, and a pressure plate, which are connected in sequence from bottom to top; the detection platform is mounted on the detection box in a height-adjustable manner.

3. The quality inspection equipment for producing speaker plastic brackets according to claim 2, characterized in that: The front of the testing box is provided with a door, and the first notch of the arc-shaped tube is positioned directly opposite the door.

4. The quality inspection equipment for producing speaker plastic brackets according to claim 3, characterized in that: The tension detection telescopic swing arm includes a tension sensor and a second elastic telescopic component. One end of the tension sensor is connected to one end of the second elastic telescopic component, and the other end of the tension sensor is hinged to the detection box. The other end of the second elastic telescopic component is hinged to the curved tube.

5. A quality inspection device for producing speaker plastic brackets according to claim 4, characterized in that: The tension detection telescopic swing arm also includes a straight tube, a limiting ring, a straight rod, and a limiting component. One end of the straight tube is closed, and the other end is open. The closed end of the straight tube is connected to one end of the tension sensor, and the open end of the straight tube is provided with a coaxial limiting ring. The inner side of the limiting ring is provided with an axially sliding straight rod. One end of the straight rod is hinged to the curved tube, and the other end is provided with a limiting member located between the limiting ring and the closed end of the straight tube. The second elastic telescopic member is disposed inside the straight tube, with one end connected to the limiting member and the other end connected to the closed end of the straight tube.

6. A quality inspection device for producing speaker plastic brackets according to claim 5, characterized in that: The clamping assembly further includes a limiting tube and a limiting rod. The limiting rod is coaxial with the lifting member, and one end is connected to the second base, while the other end is connected to the second end of the third elastic telescopic member. The limiting tube is sleeved on the third elastic telescopic member and the limiting rod. One end of the limiting tube is connected to the first base, and the other end is slidably connected to the limiting rod. It can also abut against the second base.

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