A kind of cloth tension testing device

Abstract

The utility model belongs to the technical field of tension testing machine, specifically disclose a kind of cloth tension testing device, including base, and base is equipped with carrier, and model assembly is placed with the limiting on carrier, and the convex part of model assembly is hemispherical and is spliced to form spherical test surface with the hemispherical product of model assembly upper sleeve, so that the cloth wrapped on spherical test surface is spherical state, and the upper of model assembly is equipped with the test needle with lifting function, and the hemispherical top surface of model assembly is equipped with the tension test hole for test needle insertion and the cloth of corresponding position of cloth is pressed down.The utility model utilizes the hemispherical convex part of model assembly and hemispherical product splicing to form spherical test surface, so that the cloth wrapped on spherical test surface is spherical state, and test needle is inserted into the tension test hole of hemispherical top surface of model assembly and the cloth of corresponding position of cloth is pressed down, realize the automation and standardization of cloth tension testing, improve the accuracy, reliability and test efficiency of test result.

Description

Technical Field

[0001] This utility model belongs to the technical field of tension testing devices, and in particular relates to a fabric tension testing device. Background Technology

[0002] With the continuous advancement of audio technology and consumers' increasing pursuit of sound quality and product aesthetics, spherical speakers, with their unique design, excellent acoustic performance, and appealing aesthetics, have found widespread application in home theaters, stage performances, commercial venues, and many other fields. In the manufacturing process of spherical speakers, fabric wrapping is a crucial step. The fabric wrapping not only protects the internal components and enhances the overall appearance of the speaker, but also significantly impacts its acoustic performance. Fabric tension, as one of the core indicators of wrapping quality, directly affects the sound quality, structural stability, and lifespan of the spherical speaker.

[0003] Proper fabric tension ensures a tight fit between the fabric and the speaker enclosure, effectively reducing sound scattering and reflection during propagation, thereby improving clarity and fidelity. Simultaneously, stable fabric tension prevents the fabric from loosening, wrinkling, or deforming during use, avoiding any impact on the speaker's appearance and acoustic performance due to changes in fabric condition. Therefore, accurate and reliable testing of fabric tension is particularly important during the production of dome speakers.

[0004] In existing spherical speaker enclosure fabric tension testing, traditional manual testing methods are primarily used. The specific procedure is as follows: one employee manually holds the simulated component containing the product and protective layer, striving to keep the tension holes on the simulated component vertically upwards; another employee holds a tension gauge and presses the test end, used to measure thrust, into the tension holes through the enclosure fabric. By observing the ultimate thrust value that the fabric can withstand, the fabric tension value is calculated using appropriate methods.

[0005] However, this traditional testing method has many serious drawbacks in practical applications:

[0006] (i) Low accuracy of test results

[0007] Because the simulation components rely entirely on manual support by employees, some shaking is inevitable during testing. This shaking causes the tension orifice to become misaligned, preventing the tension gauge's testing end from applying force perpendicularly to the fabric, thus shifting the direction of the test force. This change in force direction significantly affects the accuracy and reliability of the test results, failing to accurately reflect the actual tension of the fabric in use. For example, in actual testing, the misaligned tension orifice might result in a measured thrust value that is either too high or too low than the actual value, leading to misjudgments of the fabric tension and impacting product quality control.

[0008] (ii) It consumes a lot of manpower and time.

[0009] Each fabric tension test requires the participation of two employees, which undoubtedly increases production costs for enterprises in today's world of rising labor costs. Moreover, the entire testing process demands high concentration from employees, and the manual operation steps are cumbersome. From fixing the simulation components to operating the tension gauge and recording data, each step requires careful operation, resulting in low testing efficiency and failing to meet the demands of modern large-scale production for efficient testing. For example, in a large speaker manufacturing workshop, a large number of fabric tension tests are required daily. If traditional methods are used, not only will a significant amount of manpower be invested, but a substantial amount of time will also be consumed, severely impacting production schedules.

[0010] (iii) Lack of standardization and repeatability

[0011] Traditional testing methods lack standardization and automation, and differences in operating techniques and force exist among different employees. Even when testing the same product multiple times, different employee operations may yield different results, further reducing the repeatability and reliability of the test results. For example, different employees may apply force, speed, and angle differently when using a handheld tensile tester, all of which will affect the test results, making it difficult to use the test data as a basis for accurately assessing the quality of the fabric.

[0012] Therefore, the inventors dedicated themselves to designing a tension testing device to solve the above problems. Utility Model Content

[0013] The purpose of this invention is to provide a fabric tension testing device that automates and standardizes fabric tension testing, avoids errors caused by manual operation, and improves the accuracy, reliability, and efficiency of test results.

[0014] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0015] A fabric tension testing device includes a base, a carrier on the base, a model assembly placed on the upper limit of the carrier, a protruding part of the model assembly being hemispherical and spliced ​​with a hemispherical product fitted on the model assembly to form a spherical testing surface, so that the fabric wrapped on the spherical testing surface is in a spherical state, a test needle with lifting function is provided above the model assembly, and a tension testing hole is provided on the hemispherical top surface of the model assembly for the test needle to be inserted and press down on the corresponding position of the fabric.

[0016] As an improvement of the fabric tension testing device of this utility model, the model assembly includes a model body and a pressure plate. The end face of the model body away from the product is provided with a boss along its axial direction. The pressure plate is coaxially covered on the end face of the model body close to the product. The boss and the pressure plate are both located outside the fabric and are respectively positioned at two corresponding ends of the carrier.

[0017] As an improvement of the fabric tension testing device of this utility model, the number of protrusions is multiple and arranged in a ring to form a sliding hole. The sliding hole and the sliding opening on its side wall are elastically and slidably connected along the axial direction of the model body to a pressure block for elastically pressing the fabric.

[0018] As an improvement of the fabric tension testing device of this utility model, the sliding hole is eccentrically arranged, and a threaded sleeve and a stud are provided in the sliding hole. The threaded sleeve is fixed in the sliding hole, one end of the threaded sleeve extends into the threaded sleeve and is threadedly connected to the threaded sleeve, and the pressure block is slidably sleeved on the other end of the threaded sleeve and elastically connected to the threaded sleeve through a spring.

[0019] As an improvement of the fabric tension testing device of this utility model, the model body includes a hanging part, a simulation part and a fixing part. The simulation part is fixedly sleeved on the hanging part to form a protruding part of the model body. The protrusion is formed by extending outward from the end face of the hanging part along its axial direction. The fixing part is fixed to the other end face of the hanging part and is located between the hanging part and the pressure plate.

[0020] As an improvement of the fabric tension testing device of this utility model, the carrier includes a slide plate and two side plates. The slide plate is slidably disposed on the base, and the two side plates are fixed to the slide plate at intervals. The pressure plate and the boss are respectively located on the two side plates.

[0021] As an improvement of the fabric tension testing device of this utility model, one of the side plates is provided with a positioning groove at the top, and the boss is limited and set in the positioning groove. The inner wall of the other side plate is L-shaped and forms a limiting step. The pressure plate is square and located on the limiting step.

[0022] As an improvement of the fabric tension testing device of this utility model, a side baffle is provided on the outer side of the side plate below the boss. The position of the side baffle corresponds to the position of the positioning groove. The side baffle is inclined to form an inclined surface at the part of the inner wall of the corresponding side plate.

[0023] As an improvement of the fabric tension testing device of this utility model, the base is provided with a fixing plate, and the fixing plate is provided with a slide rail along its longitudinal direction, and the carrier is slidably disposed on the slide rail.

[0024] As an improvement of the fabric tension testing device of this utility model, the front and rear ends of the fixed plate are respectively provided with a stop block and a baffle, and the carrier is slidably disposed between the stop block and the baffle.

[0025] Compared with existing technologies, the fabric tension testing device of this utility model utilizes the hemispherical protrusion of the model component to splice with the hemispherical product to form a spherical testing surface, so that the fabric wrapped on the spherical testing surface is in a spherical state. The test needle is inserted into the tension testing hole on the top surface of the hemispherical model component and presses down on the corresponding position of the fabric, realizing the automation and standardization of fabric tension testing, avoiding errors caused by manual operation, and improving the accuracy, reliability and efficiency of test results. Attached image description:

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the fabric tension testing device of this utility model;

[0027] Figure 2 This is a three-dimensional enlarged view of the fixing plate, carrier, and model assembly wrapped with fabric in this utility model;

[0028] Figure 3 This is an enlarged cross-sectional view of the fixing plate, the carrier, and the model assembly wrapped with fabric in this utility model.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a three-dimensional enlarged view of the carrier and fixing plate of this utility model;

[0031] Figure 6 This is another three-dimensional enlarged view of the carrier and fixing plate of this utility model;

[0032] Figure 7 This is a three-dimensional enlarged view of the model components and product of this utility model;

[0033] Figure 8 This is a three-dimensional exploded and enlarged view of the model components and products of this utility model;

[0034] Figure 9 This is another exploded and enlarged perspective view of the model components and product of this utility model;

[0035] Figure 10 This is a three-dimensional exploded enlarged view of the hanger, pressure plate, stud, and screw sleeve in this utility model;

[0036] Figure 11 This is an enlarged cross-sectional view of the hanger, pressure plate, stud, and screw sleeve in this utility model;

[0037] Figure 12 This is an enlarged schematic diagram of the wrapping method of the cloth in this utility model.

[0038] Illustration:

[0039] 1. Base; 11. Fixing plate; 111. Slide rail; 112. Stop block; 113. Baffle; 12. Display panel; 2. Carrier; 21. Slide plate; 22. Left side plate; 221. Positioning groove; 23. Right side plate; 231. Limiting step; 24. Side stop; 241. Inclined surface; 3. Linear module; 31. Slider; 32. Test probe; 4. Model body; 41. Simulation component; 411. Tension test hole; 42. Hanging component; 421. Screw sleeve; 422. Boss; 423. Slide opening; 424. Slide hole; 425. Locking screw; 43. Fixing component; 431. Protruding platform; 44. Model assembly; 5. Pressure plate; 51. Ring platform; 6. Stud; 61. Spring; 62. Pressure block; 7. Product; 71. Fabric covering. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0041] Reference Figures 1 to 12 A fabric tension testing device includes a base 1, a carrier 2 on the base 1, a model component 44 placed on the upper limit of the carrier 2, the protruding part of the model component 44 is hemispherical and spliced ​​with a hemispherical product 7 fitted on the model component 44 to form a spherical test surface, so that the fabric 71 wrapped on the spherical test surface is in a spherical state, a test needle 32 with lifting function is provided above the model component 44, and a tension test hole 411 is provided on the hemispherical top surface of the model component 44 for the test needle 32 to be inserted and press down on the corresponding position of the fabric 71.

[0042] Reference Figure 1 and Figure 2The carrier 2 is longitudinally slidably mounted on the base 1. A fixed plate 11 is fixed on the top surface of the base 1. Two slide rails 111 are spaced apart on the fixed plate 11. Each slide rail 111 is arranged along the longitudinal direction of the fixed plate 11. The carrier 2 is slidably mounted on the two slide rails 111. A stop block 112 and a baffle 113 are respectively provided at the front and rear ends of the fixed plate 11. The baffle 113 is elongated and vertically fixed to the rear end of the fixed plate 11. The stop block 112 is located between the two slide rails 111. The carrier 2 is slidably mounted between the stop block 112 and the baffle 113.

[0043] Reference Figure 1 A straight module 3 is vertically provided at the rear end of the base 1. A slider 31 is provided on the straight module 3. The test needle 32 is located on the slider 31. The straight module 3 drives the slider 31 and the test needle 32 to rise and fall together. A display panel 12 is tilted on the base 1 and is located next to the straight module 3.

[0044] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 The carrier 2 includes a slide plate 21 and two side plates. The slide plate 21 is slidably mounted on two slide rails 111 of two bases 1. The two side plates are specifically a left side plate 22 and a right side plate 23. The left side plate 22 and the right side plate 23 are spaced apart and vertically fixed to the slide plate 21. The right side plate 23 is located at the right end of the slide plate 21. The inner wall of the right side plate 23 (i.e., the side wall of the right side plate 23 near the left side plate 22) is L-shaped and forms a limiting step 231. The left side plate 22 is located at the left end of the slide plate 21. The top of the left side plate 22 is provided with a positioning groove 221. The outer side of the side plate (i.e., the left side plate 22) below the boss 422 of the model assembly 44 (i.e., the side wall of the left side plate 22 away from the right side plate 23) is provided with a side stop 24. The position of the side stop 24 corresponds to the position of the positioning groove 221. The inner wall of the part of the side stop 24 that is higher than the left side plate 22 is inclined to form a slope 241 to facilitate the placement of the model assembly 44.

[0045] Reference Figures 7 to 11The model assembly 44 includes a model body 4 and a square pressure plate 5. The model body 4 has a boss 422 along its axial direction on the end face away from the product 7 (i.e., the left end face of the model body 4). The pressure plate 5 is coaxially mounted on the end face of the model body 4 near the product 7 (i.e., the right end face of the model body 4). Both the boss 422 and the pressure plate 5 are located outside the covering fabric 71 and are respectively positioned at the left and right corresponding ends of the carrier 2. In this embodiment, the number of bosses 422 is multiple and arranged in a ring to form a sliding hole 424. The sliding hole 424 is eccentrically positioned, and its sidewalls are arranged along its axial direction... A sliding opening 423, a sliding hole 424, and a sliding opening 423 on the side wall of the model body 4 are elastically and slidably connected along the axial direction of the model body 4 to a pressure block 62 for elastically pressing the left end of the covering cloth 71. A threaded sleeve 421, a stud 6, and a spring 61 are provided in the sliding hole 424. The threaded sleeve 421 is fixed in the sliding hole 424. One end of the threaded sleeve 421 extends into the threaded sleeve 421 and is threadedly connected to the threaded sleeve 421. The pressure block 62 is slidably sleeved on the other end of the threaded sleeve 421 and is elastically connected to the threaded sleeve 421 through the spring 61. The spring 61 is located outside the threaded sleeve 421 and is sleeved on the stud 6.

[0046] Reference Figures 7 to 11 The model body 4 includes a hook-on component 42, a simulation component 41, and a fixing component 43. The simulation component 41 is hemispherical, and the surface of the simulation component 41 that mates with the product 7 is inclined. A tension test hole 411 is formed on the outer wall of the simulation component 41. The simulation component 41 is fixedly sleeved on the hook-on component 42, forming a protruding part of the model body 4. The simulation component 41 is fixedly connected to the hook-on component 42 by four locking screws 425. All bosses 422 extend axially from the left end face of the hook-on component 42 outward from the simulation component 41. All bosses 422 are integrally formed from the same material as the hook-on component 42. The fastener 43 is flat and round. It is fixed to the right end face of the hook 42 and located between the hook 42 and the pressure plate 5. The end face of the fastener 43 near the pressure plate 5 is provided with multiple arc-shaped protrusions 431 at intervals. The end face of the pressure plate 5 near the fastener 43 is provided with a ring platform 51. All the protrusions 431 are arranged in a ring around the ring platform 51 at intervals so as to press down the right end of the cloth 71. When the entire model assembly 44 is placed on the carrier 2, the protrusions 422 are located in the positioning groove 221 of the left side plate 22, and the pressure plate 5 is located on the limiting step 231 of the right side plate 23.

[0047] Reference Figures 1 to 12 In this utility model, the method of covering the fabric 71 onto the model component 44 and the product 7 is as follows:

[0048] First, a cylindrical covering 71 is placed on a cylindrical positioning post (not shown, the positioning post is placed vertically). Then, the product 7 (product 7 is a hemispherical shell and its splicing surface with the simulation part 41 is inclined) and the model body 4 are installed sequentially on the top of the positioning post. Then, the covering 71 is turned over and wrapped around the spherical test surface formed by the splicing of the simulation part 41 and the product 7 (e.g., Figure 12 (As shown), the sliding pressure block 62 is used to elastically press the end of the cloth 71 near the boss 422 onto the simulation part 41.

[0049] Remove the model body 4 and product 7 covered with the covering cloth 71. Install the pressure plate 5 on the end face of the model body 4 away from the boss 422, so that the annular platform 51 on the pressure plate 5 and the protruding platform 431 on the fastener 43 together hold the other end of the covering cloth 71 away from the boss 422. The installation of the covering cloth 71 is completed.

[0050] Reference Figures 1 to 12 The testing method of this utility model fabric tension testing device is as follows:

[0051] The model component 44, which is fixedly wrapped with the cloth 71, and the product 7 are pushed forward laterally and placed on the carrier 2 until the boss 422 on the left end of the model component 44 falls into the positioning groove 221 on the top of the left side plate 22. The pressure plate 5 on the right end of the model component 44 slides to the limit position on the limiting step 231. The model component 44, which is fixedly wrapped with the cloth 71, and the product 7 can then be fixedly placed on the carrier 2. At this time, the tension test hole 411 on the simulation part 41 is facing upward.

[0052] An external force pushes the carrier 2 closer to the linear module 3 until the carrier 2 is blocked by the baffle 113. At this time, the tension test hole 411 on the simulation component 41 is located directly below the test needle 32. The linear module 3 drives the slider 31 and the test needle 32 to descend together. The test needle 32 is inserted into the tension test hole 411 of the simulation component 41 and presses down the fabric of the covering 71 at the corresponding position (i.e., the covering 71 covers the fabric on the tension test hole 411). When the test needle 32 descends to a certain depth, the testing machine collects the force used by the test needle 32 to calculate the tension value of the covering 71.

[0053] This utility model discloses a fabric tension testing device. It utilizes the hemispherical protrusion of the model component 44, which is joined with the hemispherical product 7 to form a spherical testing surface. This ensures the fabric 71 wrapped around the spherical testing surface is spherical. A test needle 32 is inserted into the tension testing hole 411 on the top surface of the hemispherical model component 44 and presses down on the corresponding position of the fabric 71. Through its rational structural design, this device achieves automation and standardization in testing the tension of the fabric 71. The lifting function of the test needle 32 allows for precise control of the applied testing force, avoiding errors caused by manual operation and improving the accuracy and reliability of the test results. Simultaneously, the automated operation of the device reduces manpower input, improves testing efficiency, and lowers production costs. Furthermore, the standardized testing process ensures better repeatability of the test results, providing strong technical support for the quality control of the fabric 71 of spherical speakers.

[0054] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fabric tension testing device, comprising a base, characterized in that, The base is equipped with a carrier, and a model component is placed on the upper limit of the carrier. The protruding part of the model component is hemispherical and is spliced ​​with a hemispherical product fitted on the model component to form a spherical test surface, so that the covering fabric wrapped on the spherical test surface is in a spherical state. A test needle with lifting function is provided above the model component, and a tension test hole is provided on the hemispherical top surface of the model component for the test needle to be inserted and press down on the corresponding position of the covering fabric.

2. The fabric tension testing device according to claim 1, characterized in that, The model assembly includes a model body and a pressure plate. The model body has a boss along its axial direction on the end face away from the product. The pressure plate is coaxially covered on the end face of the model body close to the product. The boss and the pressure plate are both located outside the fabric and are respectively positioned at two corresponding ends of the carrier.

3. The fabric tension testing device according to claim 2, characterized in that, The number of protrusions is multiple and arranged in a ring to form a sliding hole. The sliding hole and the sliding opening on its side wall are elastically and slidably connected along the axial direction of the model body to a pressure block for elastically pressing the covering fabric.

4. The fabric tension testing device according to claim 3, characterized in that, The sliding hole is eccentrically arranged, and a threaded sleeve and a stud are provided inside the sliding hole. The threaded sleeve is fixed inside the sliding hole, and one end of the threaded sleeve extends into the threaded sleeve and is threadedly connected to the threaded sleeve. The pressure block is slidably sleeved on the other end of the threaded sleeve and is elastically connected to the threaded sleeve through a spring.

5. The fabric tension testing device according to claim 3, characterized in that, The model body includes a hanger, a simulation component, and a fixing component. The simulation component is fixedly sleeved on the hanger to form a protruding part of the model body. The protrusion is formed by extending outward from the end face of the hanger along its axial direction. The fixing component is fixed to the other end face of the hanger and is located between the hanger and the pressure plate.

6. The fabric tension testing device according to claim 2, characterized in that, The carrier includes a slide plate and two side plates. The slide plate is slidably mounted on the base, and the two side plates are fixed to the slide plate at intervals. The pressure plate and the boss are located on the two side plates respectively.

7. The fabric tension testing device according to claim 6, characterized in that, One of the side plates has a positioning groove on its top, and the boss is positioned in the positioning groove. The inner wall of the other side plate is L-shaped and forms a limiting step. The pressure plate is square and located on the limiting step.

8. The fabric tension testing device according to claim 7, characterized in that, A side baffle is provided on the outer side of the side plate below the boss. The position of the side baffle corresponds to the position of the positioning groove. The side baffle is inclined to form a slope at the part of the inner wall of the corresponding side plate.

9. The fabric tension testing device according to claim 1, characterized in that, The base is provided with a fixing plate, and the fixing plate is provided with a slide rail along its longitudinal direction, and the carrier is slidably mounted on the slide rail.

10. The fabric tension testing device according to claim 9, characterized in that, The front and rear ends of the fixed plate are respectively provided with a stop block and a baffle, and the vehicle is slidably disposed between the stop block and the baffle.

Images