Automatic deflection tester

Abstract

The embodiment of the utility model provides an automatic flexure tester which is used for testing the flexure performance of an article containing a metal wire. The testing device comprises a testing base, the testing base comprises a motor, a transmission belt and a bottom shell, and the motor is fixedly connected with the bottom shell; the flexure device comprises a flexure arm and a clamping piece used for fixing one end of an object to be detected; an output shaft of the motor is in transmission connection with one end of the bending arm through a transmission belt, and the clamping piece is installed on the bending arm. The first fixing piece comprises a first fixing part and a first deflection testing part, and the second fixing piece comprises a second fixing part and a second deflection testing part; the first fixing part and the second fixing part are matched with each other to fix a tested article, and the first deflection testing part and the second deflection testing part are matched with each other to limit the deflection angle of the tested article. According to the invention, the problems of difficulty in force control and poor precision in the testing process in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexure testing equipment, in particular to an automatic flexure testing instrument. Background Art

[0002] With the globalization of trade, the safety performance testing of toys has attracted more and more attention. In order to make the toys look realistic and three-dimensional, many manufacturers use metal wires in many plush toys and place them inside the toys as supports, such as the tail or limbs. In the long-term use of such toys, the metal wires will bend and deform or even break. This will cause the metal wires to have sharp tips that pierce the surface fabric of the toy, posing a risk of puncture to children. Therefore, many countries and regions have strict regulations on such products containing metal wires. However, the existing testing technology uses a manual deflection test method, which has poor test accuracy; and it is impossible to reproduce the test results in subsequent audits. Utility Model Content

[0003] In view of the above problems, the present application is proposed to provide an automatic flexure tester for overcoming the above problems or at least partially solving the above problems, which is used to test the flexural properties of articles containing metal wires; the automatic flexure tester comprises:

[0004] A test base, the test base comprising a motor, a transmission belt and a bottom shell, the motor being fixedly connected to the bottom shell;

[0005] A flexure device, the flexure device comprising a flexure arm and a clamp for fixing one end of the object to be tested; the output shaft of the motor is transmission-connected to one end of the flexure arm through the transmission belt, and the clamp is mounted on the flexure arm; and

[0006] A fixing device, the fixing device includes a first fixing member and a second fixing member, the first fixing member and the second fixing member are connected to the bottom shell, the first fixing member includes a first fixing portion and a first flexural testing portion, the first fixing portion is connected to the first flexural testing portion and is set at an angle; the second fixing member includes a second fixing portion and a second flexural testing portion, the second fixing portion is connected to the second flexural testing portion and is set at an angle; the first fixing portion and the second fixing portion cooperate with each other to fix the test item, and the first flexural testing portion and the second flexural testing portion cooperate with each other to limit the flexural angle of the test item.

[0007] Optionally, the first fixing portion and the first flexure testing portion are integrally bent and formed;

[0008] And / or, the second fixing portion and the second flexure testing portion are integrally bent and formed.

[0009] Optionally, it also includes a PLC control unit arranged on the bottom shell and a sensor arranged in the direction of the flexure arm rotation axis; the PLC control unit is connected to the motor and the sensor signal respectively.

[0010] Optionally, it further includes a display, which is connected to the PLC control unit signal; the display is arranged on the bottom shell.

[0011] Optionally, it also includes an adjustment knob for adjusting the distance between the first fixing portion and the second fixing portion.

[0012] Optionally, it also includes a first mounting portion connected to the first fixing portion, and a second mounting portion connected to the second fixing portion, the first mounting portion and the second mounting portion are connected via the adjusting knob, and the first mounting portion or the second mounting portion is fixed to the bottom shell.

[0013] Optionally, it also includes a first connecting part fixedly connected to the first fixing part, and a second connecting part fixedly connected to the second fixing part; the first connecting part is connected to the first mounting part by screws, and the second connecting part is connected to the second mounting part by screws.

[0014] Optionally, the first connecting portion and the second connecting portion both have a vertically arranged adjustment hole, and the screw passes through the vertically arranged adjustment hole to be connected to the first mounting portion or the second mounting portion respectively.

[0015] Optionally, a fixing knob is further included, the flexure arm has an adjustment hole extending along the length direction of the flexure arm, and the fixing knob is threadedly connected to the clamp through the adjustment hole extending along the length direction of the flexure arm.

[0016] Optionally, it further comprises a support base for supporting the flexure device, wherein the support base is arranged above the bottom shell.

[0017] This application has the following advantages:

[0018] In the embodiment of the present application, the problem of difficulty in controlling the force and poor precision in the test process in the prior art is addressed. The present application provides an automatic flexure tester. Specifically, the automatic flexure tester includes: a test base, the test base includes a motor, a transmission belt and a bottom shell, and the motor is fixedly connected to the bottom shell; a flexure device, the flexure device includes a flexure arm and a clamp for fixing one end of the object to be tested; the output shaft of the motor is connected to one end of the flexure arm through a transmission belt, and the clamp is installed on the flexure arm; and a fixing device, the fixing device includes a first fixing member and a second fixing member, the first fixing member and the second fixing member are connected to the bottom shell, the first fixing member includes a first fixing part and a first flexure test part, the first fixing part is connected to the first flexure test part, and is set at an angle; the second fixing member includes a second fixing part and a second flexure test part, the second fixing part is connected to the second flexure test part, and is set at an angle; the first fixing part and the second fixing part cooperate with each other to fix the test object, and the first flexure test part and the second flexure test part cooperate with each other to limit the flexure angle of the test object. The test parts cooperate with each other. This application adopts a motor to drive the flexure arm to rotate. Since the speed of the motor is controllable, the force on the test object becomes stable and controllable when the flexure arm rotates. This application eliminates the flexure error caused by artificial flexure. Furthermore, this application uses a transmission belt transmission. Compared with the traditional mechanical gear transmission, the transmission belt transmission can reduce the wear of the mechanical arm gear and avoid the influence of gear wear on the flexure angle control. At the same time, the use of the transmission belt rotation also reduces the noise of the instrument during operation. Further, the embodiment of the present application is provided with a first fixed part and a first flexure test part set at an angle, and the first flexure test part and the second flexure test part cooperate with each other, so that the angle between the first flexure test part and the second flexure test part constitutes the flexure angle, so that the flexure angle of the test object is limited. The setting of the first flexure test part and the second flexure test part of this application facilitates the user to judge whether there is a visible error in the flexure angle, and to make timely adjustments to the swing angle of the flexure arm, thereby improving the test accuracy of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 is a structural schematic diagram of an automatic flexure tester provided in one embodiment of the present application;

[0021] Figure 2 yes Figure 1 A three-dimensional image from another angle.

[0022] Description of Figure Numbers:

[0023] 100. Automatic flexure tester;

[0024] 110. Test base; 112. Transmission belt; 113. Bottom shell; 115. Sensor; 116. Display; 117. Support seat; 120. Flexure device; 121. Flexure arm; 121a. Adjustment hole extending along the length direction of the flexure arm; 122. Clamp; 123. Fixing knob; 130. Fixing device; 131. First fixing member; 1311. First fixing part; 1312. First flexure test part; 1313. First mounting part; 1314. First connecting part; 132. Second fixing member; 1325. Second fixing part; 1326. Second flexure test part; 1327. Second mounting part; 130a. Vertically arranged adjustment hole; 133. Adjustment knob. DETAILED DESCRIPTION

[0025] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] The inventors analyzed the prior art and found that the prior art testing technology used a manual bending test method. During the manual test, it was difficult to control the force, the test process was uncontrollable, and the accuracy was poor. In addition, the test results could not be reproduced in subsequent audits.

[0027] It should also be noted that the articles containing metal wires described in this application can be extended to any type of textiles containing metal wires in addition to plush toys. The main test content is whether the metal wire is intact after being bent within a specified angle range and a specified number of times.

[0028] See also Figure 1 In one embodiment of the present application, in view of the problem that the force control is difficult and the accuracy is poor in the test process in the prior art, the present application proposes an automatic flexure tester 100 for testing the flexural properties of articles containing metal wires; the automatic flexure tester 100 comprises:

[0029] A test base 110, the test base 110 includes a motor, a transmission belt 112 and a bottom shell 113, and the motor is fixedly connected to the bottom shell 113;

[0030] The flexure device 120 includes a flexure arm 121 and a clamp 122 for fixing one end of the object to be tested; the output shaft of the motor is connected to one end of the flexure arm 121 through a transmission belt 112, and the clamp 122 is installed on the flexure arm 121; and

[0031] The fixing device 130 includes a first fixing member 131 and a second fixing member 132. The first fixing member 131 and the second fixing member 132 are connected to the bottom shell 113. The first fixing member 131 includes a first fixing portion 1311 and a first flexural test portion 1312. The first fixing portion 1311 is connected to the first flexural test portion 1312 and are arranged at an angle. The second fixing member 132 includes a second fixing portion 1325 and a second flexural test portion 1326. The second fixing portion 1325 is connected to the second flexural test portion 1326 and are arranged at an angle. The first fixing portion 1311 and the second fixing portion 1325 cooperate with each other to fix the test object. The first flexural test portion 1312 and the second flexural test portion 1326 cooperate with each other to limit the flexural angle of the test object.

[0032] The above-mentioned embodiment of the present application adopts a motor to drive the flexure arm 121 to rotate. Since the speed of the motor is controllable, when the flexure arm 121 rotates, the force on the test object becomes stable and controllable. The present application eliminates the flexure error caused by artificial flexure. Furthermore, the present application uses a transmission belt 112 for transmission. Compared with the traditional mechanical gear transmission, the transmission belt 112 can reduce the wear of the mechanical arm gear and avoid the influence of gear wear on the control of the flexure angle. At the same time, the use of the transmission belt 112 for rotation also reduces the noise of the instrument during operation. Furthermore, the embodiment of the present application sets a first fixing portion and a first flexure test portion 1312 set at an angle, and the first flexure test portion 1312 and the second flexure test portion 1326 are set in mirror image, so that the angle between the first flexure test portion 1312 and the second flexure test portion 1326 constitutes a flexure angle, thereby limiting the flexure angle of the test object. The provision of the first flexure testing section 1312 and the second flexure testing section 1326 of the present application facilitates the user to determine whether there is an error in the flexure angle visible to the naked eye, and to make timely adjustments to the swing angle of the flexure arm 121, thereby improving the testing accuracy of the instrument.

[0033] On the other hand, the arrangement of the first flexure test section 1312 and the second flexure test section 1326 of the present application reduces the bending damage to the test product caused by the rigidity of the structure itself. It can be explained that when the flexure angle formed by the first flexure test section 1312 and the second flexure test section 1326 is 120°, if the rotation angle of the flexure arm 121 is greater than 120° due to mechanical error, at this time, since the first flexure test section 1312 and the second flexure test section 1326 are in a fixed state, the flexure angle of the test product will be limited to within 120°; if the flexure angle of the product is greater than 120°, it will cause damage to the product, resulting in inaccurate test results.

[0034] It should be noted that the flexure angle of the present application generally refers to the angle formed by the first flexure test portion 1312 and the second flexure test portion 1326 in the horizontal direction. Correspondingly, during the test process, the swing angle of the flexure arm 121 is the actual flexure angle. Generally, the actual flexure angle is set to be consistent with or less than the angle formed by the first flexure test portion 1312 and the second flexure test portion 1326.

[0035] Existing testing standards usually require testing a left and right swing angle range of 60°, that is, the swing angle range of the flexure arm 121 is 120°. Correspondingly, the angle formed by the first flexure test part 1312 and the second flexure test part 1326 is usually also set to 120°.

[0036] It should also be noted that, in order to ensure the accuracy of the testing instrument, the above-mentioned bending device 120, fixing device 130 and bottom shell 113 are all made of metal materials.

[0037] Optionally, the specific type of the motor is a servo motor.

[0038] Optionally, in a specific embodiment, the first fixing member 131 and the second fixing member 132 are fixedly connected to the bottom shell 113 .

[0039] Optionally, the transmission belt 112 is a toothed belt, a V-belt, or a chain belt. Preferably, the transmission belt 112 is a toothed belt.

[0040] Please continue reading Figure 1 In the first embodiment of the present application, the first fixing portion 1311 and the first flexure testing portion 1312 are integrally bent and formed.

[0041] Optionally, the second fixing portion 1325 and the second flexure testing portion 1326 are integrally bent and formed.

[0042] See also Figure 2In a preferred embodiment of the present application, the test base 110 also includes a PLC control unit (not shown) disposed on the bottom shell 113 and a sensor 115 disposed in the rotation axis direction of the flexure arm 121; the PLC control unit is respectively connected to the motor and the sensor 115 signals.

[0043] It can be understood that the setting of the PLC control unit can accurately control the rotation angle and rotation speed of the flexure arm 121 driven by the motor; further, in conjunction with the use of the sensor 115, the PLC control unit can accurately control the rotation angle and rotation speed of the flexure arm 121 after receiving information feedback from the sensor 115, so as to improve the accuracy of the test.

[0044] Optionally, the type of the sensor 115 may be an image sensor 115 or a distance sensor 115; specifically, the type of the sensor 115 may be selected and set according to a corresponding recognition principle.

[0045] See also Figure 1 or Figure 2 In one embodiment of the present application, a display 116 is further included, and the display 116 is connected to the PLC control unit signal; the display 116 is arranged on the bottom shell 113.

[0046] It is understandable that the display 116 can display the test parameters of the automatic flexure tester 100 , and the corresponding test parameters may be but are not limited to the rotation rate of the motor and the number of swings, the swing cycle, the swing angle or the test interval length of the flexure arm 121 .

[0047] Optionally, the display 116 is a touch-sensitive display, and the user can directly select a test parameter or a test type on the display 116 .

[0048] It should be noted that the above-mentioned test types include manual mode and automatic mode; the manual mode means that after the test product completes the preset number of flexural swings, the equipment stops working, and the next cycle of testing needs to be manually started; the automatic mode means that after the test product completes the preset number of flexural swings, the equipment stops working within a preset time period, and the instrument automatically enters the next cycle of testing after the preset time period.

[0049] See also Figure 1 In a specific embodiment, it also includes an adjusting knob 133 for adjusting the distance between the first fixing portion 1311 and the second fixing portion 1325 .

[0050] Please continue reading Figure 1In a specific embodiment, the first mounting portion 1313 connected to the first fixing portion 1311 and the second mounting portion 1327 connected to the second fixing portion 1325 are further included. The first mounting portion 1313 and the second mounting portion 1327 are connected via an adjusting knob 133, and the first mounting portion or the second mounting portion is fixed to the bottom shell. It can be understood that by fixing the test product via the adjusting knob 133, the test process of the product is more stable.

[0051] Optionally, the adjusting knob 133 is threadedly connected to the first mounting portion 1313 or the second mounting portion.

[0052] Please continue reading Figure 1 In a more specific embodiment, it also includes a first connecting portion 1314 fixedly connected to the first fixing portion 1311, and a second connecting portion fixedly connected to the second fixing portion 1325; the first connecting portion 1314 is connected to the first mounting portion by screws, and the second connecting portion is connected to the second mounting portion by screws.

[0053] Furthermore, the first connection portion 1314 and the second connection portion both have a vertically arranged adjustment hole 130a, and screws are respectively passed through the vertically arranged adjustment hole 130a to be connected to the first mounting portion or the second mounting portion.

[0054] Optionally, the vertically arranged adjustment hole 130a may be a plurality of vertically arranged through holes, or may be a vertically arranged straight-line hole.

[0055] It is understandable that when the length of the test part is short, the positions of the first connecting part 1314 and the second connecting part are adjusted toward the rotation axis of the flexure arm 121 so that the first fixing part 1311 and the second supporting part fix the test object, thereby improving the universality of the instrument.

[0056] See also Figure 2 In a specific embodiment of the present application, a fixing knob 123 is further included, and the flexure arm 121 has an adjustment hole 121a extending along the length direction of the flexure arm 121. The fixing knob 123 is threadedly connected to the clamp 122 through the adjustment hole 121a extending along the length direction of the flexure arm 121. It can be understood that the setting of the adjustment hole 121a extending along the length direction of the flexure arm 121 also improves the universality of the instrument, so that the test instrument can adapt to products to be tested of different lengths.

[0057] Optionally, the adjustment hole 121 a extending along the length direction of the flexure arm 121 may be a plurality of through holes arranged along the length direction of the flexure arm 121 , or may be a straight-line hole arranged along the length direction of the flexure arm 121 .

[0058] See also Figure 1In one embodiment of the present application, a support base 117 for supporting the flexure device 120 is further included, and the support base 117 is disposed above the bottom shell 113 .

[0059] Optionally, the flexure arm 121 is rotatably connected to the support seat 117 .

[0060] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0061] Finally, it should be noted that, in this article, relational terms such as third and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0062] The automatic flexural tester provided by the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An automatic flexure tester for testing the flexural properties of articles containing metal wires. It is characterized in that include: A test base, the test base comprising a motor, a transmission belt and a bottom shell, the motor being fixedly connected to the bottom shell; A flexure device, the flexure device comprising a flexure arm and a clamp for fixing one end of the object to be tested; the output shaft of the motor is transmission-connected to one end of the flexure arm through the transmission belt, and the clamp is mounted on the flexure arm; as well as A fixing device, the fixing device includes a first fixing member and a second fixing member, the first fixing member and the second fixing member are connected to the bottom shell, the first fixing member includes a first fixing portion and a first flexural testing portion, the first fixing portion is connected to the first flexural testing portion and is set at an angle; the second fixing member includes a second fixing portion and a second flexural testing portion, the second fixing portion is connected to the second flexural testing portion and is set at an angle; the first fixing portion and the second fixing portion cooperate with each other to fix the test item, and the first flexural testing portion and the second flexural testing portion cooperate with each other to limit the flexural angle of the test item.

2. The automatic flexure tester according to claim 1, It is characterized in that The first fixing portion and the first flexure testing portion are integrally bent and formed; And / or, the second fixing portion and the second flexure testing portion are integrally bent and formed.

3. The automatic flexure tester according to claim 1, It is characterized in that It also includes a PLC control unit arranged on the bottom shell and a sensor arranged in the direction of the rotating shaft of the flexure arm; the PLC control unit is respectively connected to the motor and the sensor signal.

4. The automatic flexure tester according to claim 3, It is characterized in that It also includes a display, which is connected to the PLC control unit by signal; the display is arranged on the bottom shell.

5. The automatic flexure tester according to claim 1, It is characterized in that It also includes an adjusting knob for adjusting the distance between the first fixing portion and the second fixing portion.

6. The automatic flexure tester according to claim 5, It is characterized in that It also includes a first mounting portion connected to the first fixing portion; and a second mounting portion connected to the second fixing portion; the first mounting portion and the second mounting portion are connected via the adjusting knob, and the first mounting portion or the second mounting portion is fixed to the bottom shell.

7. The automatic flexure tester according to claim 6, It is characterized in that It also includes a first connecting portion fixedly connected to the first fixing portion; and a second connecting portion fixedly connected to the second fixing portion; The first connecting portion is connected to the first mounting portion via screws, and the second connecting portion is connected to the second mounting portion via screws.

8. The automatic flexure tester according to claim 7, It is characterized in that The first connecting portion and the second connecting portion both have a vertically arranged adjustment hole, and the screws pass through the vertically arranged adjustment holes to be connected to the first mounting portion or the second mounting portion respectively.

9. The automatic flexure tester according to claim 1, It is characterized in that It also includes a fixing knob, the flexure arm has an adjustment hole extending along the length direction of the flexure arm, and the fixing knob is threadedly connected to the clamping piece through the adjustment hole extending along the length direction of the flexure arm.

10. The automatic flexure tester according to claim 1, It is characterized in that It also includes a support base for supporting the flexure device, and the support base is arranged above the bottom shell.

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