Multi-electric cylinder driven flip sound insulation box

Abstract

The present invention discloses a multi-electric cylinder-driven flip-type soundproof box, comprising a test frame, a soundproof box body mounted on the test frame, the soundproof box body comprising a box body, and a box cover disposed on the box body. The soundproof box body also includes a multi-axis opening and closing motion assembly for driving the box cover upward or downward movement and driving the box cover to rotate relative to the box body to open or close the box body. The present invention addresses the shortcomings of conventional soundproof boxes, such as severe wear and failure of sealing structures; slow and inefficient opening and closing movement, high impact during testing, and poor reliability; and low product compatibility and inability to adapt to the requirements of full-line automation.

Description

Technical Field

[0001] The present invention relates to the technical field of sound insulation boxes, and in particular to a multi-electric cylinder driven flip-type sound insulation box. Background Art

[0002] In the current field of speaker testing, soundproofing boxes are an important component for isolating the external environment, shielding external interference, and ensuring stable acoustic and electrical performance testing. However, existing soundproofing boxes on the market have the following defects and shortcomings:

[0003] 1. The shielding door / cover adopts a push-pull or hinged structure. When closed, it cannot achieve uniform stress on the entire body, and the sound insulation effect is limited;

[0004] 2. The shielding door / cover is opened and closed manually or pneumatically driven on both sides. The overall operation intensity is high, and the movement speed during the closing process cannot be accurately controlled according to the stroke segment. Increasing the speed will directly lead to increased impact of the box movement and distortion of the test results, limiting the improvement of the test UPH.

[0005] 3. The existing sound insulation box test motion is fixed, and it is impossible to quickly switch and adjust the opening and closing angles and movement range according to different products. As a result, in order to achieve higher product testing efficiency, it is necessary to design different specifications of test sound insulation boxes for products with large size differences. This reduces the compatibility of the test production line with different products and significantly increases economic costs.

[0006] 4. Because the opening and closing movement of the box is uncontrollable, it is difficult for the soundproof box to cooperate with the multi-axis robot to automatically pick up and place products, which limits the improvement of the automation level of the test station. Summary of the Invention

[0007] The main purpose of this invention is to propose a multi-electric cylinder driven flip sound insulation box, which aims to solve the defects of ordinary sound insulation boxes, such as large wear and easy failure of the sealing structure; slow opening and closing movement speed and low efficiency, large impact and poor reliability during the testing process; low product compatibility and inability to adapt to the automation requirements of the entire line.

[0008] To achieve the above-mentioned objectives, the present invention provides a multi-electric cylinder driven flip-type sound insulation box, comprising a test frame, a sound insulation box body mounted on the test frame, the sound insulation box body comprising a box body and a box cover provided on the box body, the sound insulation box body also comprising a multi-axis opening and closing motion component for driving the box cover to move upward or downward, and driving the box cover to rotate relative to the box body, so as to open or close the box body.

[0009] A further technical solution of the present invention is that two rotating shafts are respectively provided on both sides of the box cover, wherein the first rotating shaft of the two rotating shafts is located in the middle of the box cover, and the second rotating shaft of the two rotating shafts is located at the rear end of the box cover, and the multi-opening and closing motion assembly includes a frame for installing the sound insulation box body, and a fixed electric cylinder module and a rotary electric cylinder module are installed on both sides of the frame, the rotary electric cylinder module is rotatably connected to the corresponding first rotating shaft, and the fixed electric cylinder module is rotatably connected to the corresponding second rotating shaft.

[0010] A further technical solution of the present invention is that the frame is installed in the test frame through a multi-point rigid-flexible conversion connection module, and the multi-point rigid-flexible conversion connection module includes a plurality of rubber pads arranged on the test frame, a plurality of rigid connectors arranged at the bottom of the frame, and a plurality of driving cylinders installed on the test frame for driving the plurality of rigid connectors to move up and down, thereby driving the frame to move up and down.

[0011] A further technical solution of the present invention is that the box cover comprises, from the outside to the inside, an outer layer of wooden plywood, sound-absorbing cotton, an inner layer of wooden plywood, and corrugated sound-absorbing cotton.

[0012] A further technical solution of the present invention is that the inner and outer surfaces of the outer wooden plywood are both provided with aluminum alloy right-angle edging and aluminum alloy profile skeleton, and the aluminum alloy right-angle edging and aluminum alloy profile skeleton are connected by fixed-point locking.

[0013] A further technical solution of the present invention is that the box body comprises, from the outside to the inside, an outer layer of wooden plywood, sound-absorbing cotton, an inner layer of wooden plywood, and corrugated sound-absorbing cotton.

[0014] A further technical solution of the present invention is that the middle portion of the front end of the box cover extends downward to form a V-shaped buckling portion, and the front end of the box body is provided with a groove portion corresponding to the V-shaped buckling portion.

[0015] A further technical solution of the present invention is that a test fixture platform and an audio collection microphone assembly are installed in the box.

[0016] The beneficial effects of the present invention are as follows: the present invention, through the above-mentioned technical scheme, includes a test rack, a sound insulation box body installed on the test rack, the sound insulation box body includes a box body, a box cover provided on the box body, the sound insulation box body also includes a multi-axis opening and closing motion component for driving the box cover to move upward or downward, and driving the box cover to rotate relative to the box body, so as to open or close the box body, thereby solving the defects of the ordinary sound insulation box sealing structure that is subject to large wear and easy failure; the opening and closing movement speed is slow, the efficiency is low, the test process has a large impact, and the reliability is poor; the product compatibility is low and it cannot adapt to the automation requirements of the entire line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a multi-electric cylinder driven flip sound insulation box of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the sound insulation box body in a preferred embodiment of the multi-electric cylinder driven flip sound insulation box of the present invention;

[0020] Figure 3 This is a structural diagram of a test frame in a preferred embodiment of a multi-electric cylinder driven flip-type sound insulation box of the present invention;

[0021] Figure 4 This is a schematic structural diagram of a multi-axis opening and closing motion assembly in a preferred embodiment of a multi-electric cylinder driven flip sound insulation box of the present invention;

[0022] Figure 5 This is a structural diagram of the upper cover of a preferred embodiment of a multi-electric cylinder driven flip sound insulation box of the present invention;

[0023] Figure 6 This is another structural diagram of the upper cover of the preferred embodiment of the multi-electric cylinder driven flip sound insulation box of the present invention;

[0024] Figure 7 This is a schematic structural diagram of a box body in a preferred embodiment of a multi-electric cylinder driven flip sound insulation box of the present invention;

[0025] Figure 8 This is another structural diagram of the box body in a preferred embodiment of the multi-electric cylinder driven flip sound insulation box of the present invention;

[0026] Figure 9 This is a schematic diagram of the process of opening the box body in a preferred embodiment of the multi-electric cylinder driven flip sound insulation box of the present invention.

[0027] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] Taking into account the technical defects of existing sound insulation boxes in the prior art, the main reason is that the current design concept of sound insulation boxes in the acoustic testing industry is backward, the automation level is low, and it cannot adapt to the industrial upgrading under the background of intelligent manufacturing. Therefore, the present invention adopts a new sound insulation box design method to solve the above defects and shortcomings, focusing on improving the sound insulation performance, and on the premise of ensuring the test effect, greatly improving the test UPH, changing the current situation of the low degree of automation of the test station in the industry and low compatibility with different products, and thoroughly improving the upper limit of the sound insulation box industry standard. Starting from the two perspectives of innovative sound insulation box structure and drive mode, the present invention proposes a new and complete solution, that is, modular separation of the box body in structure, and use of multi-servo electric cylinder joint drive in the drive mode, which thoroughly solves the many defects of ordinary sound insulation box sealing structure, such as large wear and easy failure; slow opening and closing movement speed, low efficiency, large impact in the test process, poor reliability; low product compatibility, and inability to adapt to the automation requirements of the entire line.

[0032] This device is suitable for testing the acoustic characteristics of mid-frequency, low-frequency, and subwoofer speakers, as well as small speakers, in semi-automatic and fully-automatic speaker test lines. It is particularly suitable for speaker test lines that have high UPH requirements and require flexible switching between manual and robotic loading and unloading.

[0033] For details, please refer to Figures 1 to 9 The preferred embodiment of the multi-electric cylinder driven flip sound insulation box proposed in the present invention includes a test frame 1, a sound insulation box body 2 installed on the test frame 1, the sound insulation box body 2 includes a box body 3, a box cover 4 covered on the box body 3, and the sound insulation box body 2 also includes a multi-axis opening and closing motion component 5 for driving the box cover 4 to move upward or downward, and driving the box cover 4 to rotate relative to the box body 3, so as to open or close the box body 3.

[0034] It can be understood that in this embodiment, a test fixture platform and an audio acquisition microphone assembly are installed in the box 3; the test rack 1 is the carrier unit of all functional modules and auxiliary unit modules, and is also the basis for realizing various functions such as functional testing, safety protection, human-computer interaction, and alarm prompts.

[0035] In this embodiment, the sound insulation box body 2 includes a box body 3, a box cover 4, and a multi-axis opening and closing motion component 5, wherein the box body 3 is relatively fixed, and there is no fixed hinge connection between the box cover 4 and the box body 3. It is completely driven by the multi-axis opening and closing motion component 5, which converts the single-degree-of-freedom rotation of the box cover 4 into a multi-degree-of-freedom opening, ensuring targeted adaptation to products of different specifications.

[0036] Furthermore, in this embodiment, two rotating shafts are respectively provided on both sides of the box cover 4, wherein the first rotating shaft 6 of the two rotating shafts is located in the middle of the box cover 4, and the second rotating shaft 7 of the two rotating shafts is located at the rear end of the box cover 4. The multi-opening and closing motion assembly includes a frame 8 for installing the sound insulation box body 2, and a fixed electric cylinder module 9 and a rotary electric cylinder module 10 are installed on both sides of the frame 8. The rotary electric cylinder module 10 is rotatably connected to the corresponding first rotating shaft 6, and the fixed electric cylinder module 9 is rotatably connected to the corresponding second rotating shaft 7.

[0037] Among them, the frame 8 is installed in the test rack 1 through a multi-point rigid-flexible conversion connection module 11. The multi-point rigid-flexible conversion connection module 11 includes a number of rubber pads arranged on the test rack 1, a number of rigid connectors arranged at the bottom of the frame 8, and a number of driving cylinders installed on the test rack 1 for driving the number of rigid connectors to move up and down, thereby driving the frame 8 to move up and down.

[0038] This embodiment adopts a multi-point rigid-flexible conversion connection module 11 between the sound insulation box body 2 and the test rack 1, that is, during the test process, the rigid components of the connection module are separated, that is, the driving cylinder is separated from the rigid connection part, and the sound insulation box body 2 and the test rack 1 are completely flexibly coupled, which effectively isolates the medium and high frequency interference transmitted from the test rack 1, so that the equipment will not be affected by adjacent equipment and ground disturbances during the test process, which directly improves the test robustness; and when the test process is over, the rigid connection part of the connection module is quickly restored by the driving cylinder, so that the rigid coupling relationship between the sound insulation box body 2 and the test rack 1 is re-established, ensuring that the box body 3 will not shake during the high-speed opening of the box cover 4, thereby improving the stability of the accuracy of the material placement and loading position of the product to be tested in the box, so that the sound insulation box meets the high-precision requirements of the product target position when the multi-axis robot automatically loads and unloads at high speed, and expands the usage scenarios under higher automation levels.

[0039] The multi-axis opening and closing motion assembly 5 consists of an aluminum alloy frame 8, a fixed electric cylinder module 9, and a rotary electric cylinder module 10. The housing 3 is mounted within the aluminum alloy frame 8 and connected at fixed points. The fixed electric cylinder module 9 and the rotary electric cylinder module 10 are mounted on the outside of the aluminum alloy frame 8. The bearing bases at the upper ends of the fixed electric cylinder module 9 and the rotary electric cylinder module 10 are respectively connected to corresponding rotating shafts on the housing cover 4. Specifically, the rotary electric cylinder module 10 is rotationally connected to the corresponding first rotating shaft 6, and the fixed electric cylinder module 9 is rotationally connected to the corresponding second rotating shaft 7. The fixed electric cylinder module 9 and the rotary electric cylinder module 10 are driven by servo motors and equipped with absolute encoders, ensuring closed-loop control of the position accuracy of all fixed electric cylinder modules 9 and rotary electric cylinder modules 10. Furthermore, both the fixed electric cylinder module 9 and the rotary electric cylinder module 10 utilize interpolation algorithms to achieve complete synchronization of movement. This means that the left and right modules in the same position maintain the same position, velocity, and acceleration at the same time. When the lid 4 is opened, the fixed electric cylinder module 9 and the rotary electric cylinder module 10 start simultaneously, maintaining the same speed and stroke. When the fixed electric cylinder module 9 reaches the set position, the rotary electric cylinder module 10 continues to move. Because the rotary electric cylinder module 10 is mounted on a rotating shaft, its own movement has two degrees of freedom. Therefore, during the process of the rotary electric cylinder module 10 reaching the final set position, the quadrilateral formed by the fixed electric cylinder module 9, the rotary electric cylinder module 10, the box body 3, and the lid 4 can always remain stable. When the lid 4 is closed, the rotary electric cylinder module 10 starts first. When the motion stroke returns to the same level as the fixed electric cylinder module 9, the fixed electric cylinder module 9 and the rotary electric cylinder module 10 automatically match the position and speed and descend synchronously.

[0040] The above principle of the multi-axis opening and closing motion component 5 ultimately divides the opening and closing action of the box cover 4 into two stages, namely the overall vertical rising stage of the box cover 4 and the rotation and opening stage of the box cover 4 around the fixed axis. When the box cover 4 is opened / closed, it is also a process in which the upper and lower V-grooved sound-absorbing cottons engage with each other to form a closed space. In this stage, the vertical up and down movement of the upper cover driven by multiple electric cylinders will significantly reduce the pressing gap of the sound-absorbing cotton, improve the sound insulation effect, and also eliminate the interference and wear of the sound-absorbing cotton caused by the rotation around the fixed hinge. At the same time, the servo-driven box cover 4 can also configure different motion parameters for each stage by planning the motion range, that is, to achieve a smooth transition in the start / stop stage of the box cover 4, significantly reducing the impact of the motion disturbance of the box body 3 at this stage on testing and loading and unloading; and in the intermediate stage, the operating speed is greatly improved, the action time is shortened, and the UPH of the equipment is directly improved. In actual tests, the action time is reduced by at least 40% compared with other drive methods. In addition, the servo drive also has very high product compatibility and can switch the upper cover opening posture with one click at the software level. For example, when testing large-size products, the equipment can increase the opening and closing angle to facilitate manual operation, while when testing small-size products, the angle can be reduced accordingly to reduce movement time and improve equipment output.

[0041] In this embodiment, the lid 4 comprises, from the outside to the inside, an outer wooden plywood layer 12, an outer V-shaped modular sound-absorbing foam layer 13, an inner wooden plywood layer 14, and an inner corrugated sound-absorbing foam layer 15. Both the inner and outer surfaces of the outer wooden plywood layer 12 are provided with aluminum alloy right-angled edging 16 and an aluminum alloy profile frame 17, which are connected using fixed-point locking.

[0042] From the outside to the inside, the box body 3 comprises an outer layer of wooden plywood 18, an outer layer of V-shaped combined sound-absorbing cotton 19, an inner layer of wooden plywood 20, and an inner layer of corrugated sound-absorbing cotton 21. The middle portion of the front end of the box cover 4 extends downward to form a V-shaped buckle portion, and the front end of the box body 3 is provided with a groove portion corresponding to the V-shaped buckle portion.

[0043] In consideration of ergonomics, the box cover 4 of this embodiment adopts a front-sunken design, that is, the middle portion of the front end of the box cover 4 extends downward to form a V-shaped buckling portion.

[0044] The box cover 4 as a whole adopts a four-layer sound insulation structure design, which, from the outside to the inside, consists of an outer wooden plywood 12, an outer V-shaped combined sound-absorbing cotton 13, an inner wooden plywood 14, and an inner corrugated sound-absorbing cotton 15. The V-shaped structure of the outer V-shaped combined sound-absorbing cotton 13 is an extruded design, and no glue is used for bonding. This ensures that it can be quickly replaced after being squeezed and sealed with the V-shaped groove of the box body 3 for a long time, avoiding the situation in which the contact surface of the equipment is damaged and cannot be maintained. The box cover 4 also adopts a double-frame 8 structural reinforcement design, that is, aluminum alloy right-angle edging 16 and aluminum alloy profile skeleton 17 are added to the inner and outer surfaces of the outer wooden plywood 12 respectively. The aluminum alloy right-angle edging 16 and the aluminum alloy profile skeleton 17 are connected by fixed-point locking, avoiding the unmaintainability of conventional riveted structures. The force-bearing structure driven by the box cover 4 is a bilaterally symmetrical support shaft, that is, there are two high-strength alloy shafts connected to the aluminum alloy frame on each side. The optimal design position is determined based on the CAE analysis results to ensure that the overall force of the box cover 4 is balanced and the structure is reliable during movement.

[0045] In this embodiment, the enclosure 3 also features a symmetrical, recessed front design, with a recessed portion at the front end corresponding to the V-shaped snap-fit portion. Similar to the lid 4, the enclosure 3 employs a four-layer soundproofing structure: from outside to inside, an outer layer of wooden plywood 18, an outer layer of V-shaped modular sound-absorbing foam 19, an inner layer of wooden plywood 20, and an inner layer of corrugated sound-absorbing foam 21. The V-shaped structure of the outer V-shaped modular sound-absorbing foam 19 is extruded, improving the maintainability of the equipment.

[0046] The beneficial effects of the present invention are: the present invention, through the above technical scheme, includes a test rack 1, a sound insulation box body 2 installed on the test rack 1, the sound insulation box body 2 includes a box body 3, a box cover 4 arranged on the box body 3, and the sound insulation box body 2 also includes a multi-axis opening and closing motion component 5 for driving the box cover 4 to move upward or downward, and driving the box cover 4 to rotate relative to the box body 3, so as to open or close the box body 3, thereby solving the defects of the ordinary sound insulation box sealing structure being prone to wear and failure; slow opening and closing movement speed, low efficiency, large impact during the test process, poor reliability; low product compatibility, and inability to adapt to the automation requirements of the entire line.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A multi-electric cylinder driven flip sound insulation box, characterized in that: The soundproof box body comprises a test rack and a soundproof box body mounted on the test rack, wherein the soundproof box body comprises a box body and a box cover provided on the box body, and the soundproof box body further comprises a multi-axis opening and closing motion assembly for driving the box cover to move upward or downward and to drive the box cover to rotate relative to the box body to open or close the box body; Two rotating shafts are respectively provided on both sides of the box cover, wherein the first rotating shaft of the two rotating shafts is located in the middle of the box cover, and the second rotating shaft of the two rotating shafts is located at the rear end of the box cover. The multi-axis opening and closing motion assembly includes a frame for mounting the sound insulation box body, and a fixed electric cylinder module and a rotary electric cylinder module are installed on both sides of the frame. The rotary electric cylinder module is rotatably connected to the corresponding first rotating shaft, and the fixed electric cylinder module is rotatably connected to the corresponding second rotating shaft; The frame is mounted in the test frame via a multi-point rigid-flexible conversion connection module, the multi-point rigid-flexible conversion connection module comprising a plurality of rubber pads disposed on the test frame, a plurality of rigid connectors disposed at the bottom of the frame, and a plurality of drive cylinders mounted on the test frame for driving the plurality of rigid connectors to move up and down, thereby driving the frame to move up and down; The middle part of the front end of the box cover extends downward to form a V-shaped buckling portion, and the front end of the box body is provided with a groove portion corresponding to the V-shaped buckling portion; The box cover comprises, from the outside to the inside, an outer layer of wooden plywood, an outer layer of V-shaped combined sound-absorbing cotton, an inner layer of wooden plywood, and an inner layer of corrugated sound-absorbing cotton. The V-shaped structure of the outer layer of V-shaped combined sound-absorbing cotton is an extruded design and is not glued. The inner and outer surfaces of the outer wooden plywood are both provided with aluminum alloy right-angled edges and aluminum alloy profile frames, and the aluminum alloy right-angled edges and the aluminum alloy profile frames are connected by fixed-point locking; The box body includes, from the outside to the inside, an outer layer of wooden plywood, an outer layer of V-shaped combined sound-absorbing cotton, an inner layer of wooden plywood, and an inner corrugated sound-absorbing cotton; the V-shaped structure of the outer layer of V-shaped combined sound-absorbing cotton is an extruded design and is not bonded with glue.

2. The multi-electric cylinder driven flip-type sound insulation box according to claim 1 is characterized in that: A test fixture platform and an audio collection microphone assembly are installed in the box.

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