Digital leather tape automatic test equipment and test method

Abstract

The invention provides a digital leather tape automatic test device comprising a limiting assembly which is provided with a first end and a second end along a first direction; the first clamping assembly is used for fixing a tape body of the leather tape and can swing relative to the limiting assembly; the second clamping assembly is used for clamping the tape of the leather tape and can move along the limiting assembly; the first driving assembly is used for driving the first clamping assembly to swing; the second driving assembly is used for driving the second clamping assembly to move along the limiting assembly at different speeds; a control assembly; by the adoption of the equipment, automatic testing of the digital leather tape can be achieved, the leather tape is pulled according to different speeds and angles for testing, the accuracy and stability of the leather tape can be effectively measured, and the testing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of automatic testing technology, and more particularly to digital leather tape measure automatic testing equipment and a testing method. Background Art

[0002] Leather tape measures are primarily used for garment measurement, a crucial quality control step in the apparel and clothing manufacturing industry, ensuring that all garment dimensions meet the specified size standards. Currently, traditional tape measures require manual measurement of garment dimensions and then manual entry of these measurements into a digital system. This process relies on visual reading, and the data transfer process is prone to errors due to human error. To address this issue, digital leather tape measures have begun to appear on the market. These use various principles (such as capacitance barrier and infrared) to convert the tape's extended distance into a digital measurement result. These results are then output to the information / digital system via various data transmission methods (such as Bluetooth, Wi-Fi, and serial ports).

[0003] For this type of digital measurement leather tape measure, since it no longer relies on manual visual reading but relies on digital conversion to directly give the tape pull-out length result, the digital conversion accuracy of the tape pull-out length needs to be tested, especially the consistency of its digital conversion accuracy under different pull-out speeds; at the same time, leather tape measures generally have an automatic retraction function for ease of use. The automatic retraction function is often damaged due to high-intensity use. The tape is also prone to wear after long-term use, causing debris to affect the digital conversion components inside the tape body, thereby affecting the measurement results.

[0004] To address the above issues, it is necessary to simulate actual usage scenarios and test the durability of digital measuring tapes at different extension angles in order to improve the design and product quality of digital measuring tapes. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a digital leather tape measure automatic testing device to improve the design and product quality of the digital measuring leather tape measure.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: In a first aspect, a digital tape measure automated testing device includes: a limit assembly, wherein the limit assembly is provided with a first end and a second end along a first direction; a first clamping assembly, which is used to fix the body of the tape measure and can swing relative to the limit assembly to adjust the angle between the body and the tape; a second clamping assembly, which is used to clamp the tape of the tape measure and can move along the limit assembly, when the first clamping assembly moves toward the first end, the tape is pulled out of the body by the first clamping assembly; when the first clamping assembly moves toward the second end, the tape is retracted into the body; a first drive assembly, which is used to drive the first clamping assembly to swing; a second drive assembly, which is used to drive the second clamping assembly to move along the limit assembly at different speeds; a control assembly, which is communicatively connected to the first drive assembly to control the swing angle of the first clamping assembly; is communicatively connected to the second drive assembly to control the second clamping assembly to move a first distance; and is communicatively connected to the tape measure to read a second distance measured by the tape measure.

[0007] In one embodiment, the first clamping assembly includes: a rotating bearing and a supporting unit; the supporting unit is connected to the limiting assembly via the rotating bearing, and the supporting unit can swing between a first position and a second position relative to the limiting assembly; the driving shaft of the first driving assembly is in transmission connection with the supporting unit; when the supporting unit swings to the first position relative to the limiting assembly, When the support unit swings to the second position relative to the limit assembly, .

[0008] In one embodiment, the support unit includes: a fourth fixed plate and a clamp; one side of the fourth fixed plate is fixedly connected to the rotary bearing; the plane where the fourth fixed plate is located is perpendicular to the second direction, and the second direction and the first direction intersect with each other; the clamp is fixedly arranged on the other side of the fourth fixed plate, and the clamp is used to press the ruler body onto the fourth fixed plate along the second direction.

[0009] In one embodiment, the opening of the ruler body and the axis of the rotary bearing overlap with each other; the ruler body and the clamp are both located in the second area X2.

[0010] In one embodiment, a finger unit is further provided on the fourth fixed plate, and the finger unit is used to press the record button on the ruler body; the finger unit specifically includes: a push-pull electromagnet, a fifth fixed plate and a sixth fixed plate; the fifth fixed plate is adjustably mounted on the fourth fixed plate; the sixth fixed plate is fixedly connected to the fifth fixed plate; the push-pull electromagnet is adjustably mounted on the sixth fixed plate; the driving end of the push-pull electromagnet points to the record button.

[0011] In one embodiment, a first waist-shaped hole is provided on the fifth fixing plate; the first waist-shaped hole extends along the length direction of the fifth fixing plate; a second waist-shaped hole is provided on the sixth fixing plate, and the second waist-shaped hole extends along the width direction of the sixth fixing plate; the long axis of the first waist-shaped hole and the long axis of the second waist-shaped hole intersect with each other.

[0012] In one embodiment, a plurality of finger units are provided on the fourth fixing plate, and the axes of the driving shafts of the plurality of finger units intersect with each other.

[0013] In one embodiment, the second clamping assembly includes: a sliding portion, a second connecting block, a third connecting block and a first clamping block; the sliding portion is slidably connected to the limiting assembly; the second connecting block extends along a third direction, the third connecting block extends along the first direction, and the third direction intersects with the first direction; one end of the second connecting block is fixedly connected to the sliding portion, and the other end of the second connecting block is fixedly connected to one end of the third connecting block; the first clamping block is installed at the other end of the third connecting block for clamping the ruler tape.

[0014] In one embodiment, the fourth fixing plate has a circular structure; the length of the second connecting block along the third direction is equal to the radius of the fourth fixing plate; the length of the third connecting block along the first direction is equal to the radius of the fourth fixing plate.

[0015] In a second aspect, a digital leather tape measure automated testing method is applied to the digital leather tape measure automated testing device as described in the first aspect, and the method includes: S1. Fix the ruler body on the first clamping assembly; fix the ruler tape on the second clamping assembly; S2, establishing a communication connection between the control component and the tape measure; S3, driving the second driving assembly to drive the second clamping assembly to slide a first distance toward the first end at a predetermined speed along the first direction; after driving the tape ruler to move outward, recording the measurement data of the tape ruler as a second distance; S4. Recording the first distance and the second distance into the system as a distance data pair; S5. After controlling the first driving assembly to drive the first clamping assembly 2 to rotate a predetermined angle and / or changing the predetermined speed, repeat steps S1-S5 to obtain multiple sets of distance data pairs; and determine whether the tape measure meets the predetermined standard based on the distance data pairs.

[0016] In summary, the present invention has the following beneficial effects: the automatic testing equipment and testing method for leather tape measures, using the equipment of the present invention, can realize the automatic testing of digital leather tape measures, and the leather tape measures can be pulled at different speeds and angles for testing, which can effectively measure the accuracy and stability of the leather tape measures and improve the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a digital leather tape measure in the prior art; Figure 2 This is a schematic diagram of the three-dimensional structure of the automatic testing device for leather tape measures according to the present invention from a first perspective; Figure 3 It is a schematic diagram of the three-dimensional structure of the limiting component of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing block of the present invention; Figure 5 is a schematic diagram of the three-dimensional structure of the second clamping assembly of the present invention; Figure 6 is a schematic diagram of the three-dimensional structure of the second driving assembly of the present invention; Figure 7 For the present invention Figure 3 A magnified schematic diagram of the middle part; Figure 8 This is a schematic diagram of the three-dimensional structure of the first clamping assembly of the present invention from a first viewing angle; Figure 9 A schematic diagram of the three-dimensional structure of the first clamping assembly of the present invention from a second viewing angle; Figure 10 is an exploded schematic diagram from a second perspective of the first clamping assembly of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the finger unit of the present invention; Figure 12 This is a schematic diagram of the three-dimensional structure of the leather tape measure automatic testing device of the present invention from a second perspective; Figure 13 For the present invention Figure 12 A magnified schematic diagram of part B in the middle; Figure 14 For the present invention Figure 12 Enlarged schematic diagram of the middle C part; Figure 15 For the present invention Figure 12 Enlarged schematic diagram of the D part in the middle; Figure 16A schematic diagram of a three-dimensional structure from a first perspective of the present invention in which the first clamping assembly and the second clamping assembly are close to each other; Figure 17 A schematic diagram of a three-dimensional structure from a second perspective of the present invention in which the first clamping assembly and the second clamping assembly are close to each other; Figure 18 This is a schematic diagram of the automatic testing device for leather tape measures according to the present invention as viewed from a second direction; Figure 19 This is a flow chart of the automatic testing method for a leather tape measure of the present invention; Figure 20 This is a flow chart of the accuracy test of digital conversion of the drawn-out length of a leather tape measure at different drawing speeds of the present invention; Figure 21 This is a flow chart of the durability test of the stretching-recovery function of the ruler tape at different extension angles of the present invention. DETAILED DESCRIPTION

[0018] In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying 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 one or more of such features.

[0019] In the present invention, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1 In order to solve the problems existing in the prior art, the present invention provides a digital leather tape measure automatic testing device. like Figure 1 Figure 6 shows a conventional leather tape measure 6. The tape measure 6 includes a body 61 and a tape strip 62. Body 61 defines a cavity within the body and an opening connecting the cavity to the outside. The tape strip 62 is wound within the cavity, and one end of the tape strip 62 extends from the opening as a tap. Pulling the tap outward releases the tape strip 62 from the body 61. The tape strip of a conventional leather tape measure 6 is marked with graduations. Starting at the tap, as the tape strip 62 is extended, the graduations on the tape strip located at the opening indicate the length of the object being measured. To facilitate data recording, in addition to visually observing the scale on tape 62, digital leather tape measures have also been developed. These utilize various principles (such as capacitive sensors and infrared sensors) to convert the distance the tape 62 is pulled out into a digital measurement result. This result is then output to an information / digital system via various data transmission methods (such as Bluetooth, Wi-Fi, and serial ports). A record button 63 is provided on the tape body 61. Once the tape 62 is pulled to a predetermined position, pressing the record button 63 on the tape body 61 records the current tape length and stores it in the relevant system via data transmission. Digital leather tape measures 6 effectively avoid errors and misrecording caused by manual reading, thereby improving data measurement accuracy.

[0022] However, the aforementioned leather tape measure 6 also presents certain problems. In actual production, it is necessary to ensure that the leather tape measure 6 maintains consistent accuracy at different pulling speeds to avoid inaccurate readings caused by pulling the leather tape measure 6 too quickly. In addition, the leather tape measure 6 generally has an automatic retraction function for ease of use. This automatic retraction function is often damaged due to intensive use. Alternatively, due to the different usage scenarios of the leather tape measure 6, the pulling angle of the tape 62 during the pulling and retraction process varies. The tape 62 and the opening position are prone to friction, generating debris. The debris falls into the inner part of the tape body 61, which also affects the measurement accuracy of the leather tape measure. Therefore, it is very necessary to invent a testing device that can perform durability testing on the leather tape measure 6.

[0023] To facilitate the description of the device, Figure 2As shown, the direction of the device is first described. The first direction is A1A2, which is specifically the length direction of the slide rail 11; the second direction is B1B2, which is specifically the width direction of the slide rail 11; the third direction is C1C2, which is specifically the direction of gravity. The first direction, the second direction and the third direction intersect with each other.

[0024] like Figure 2 、 Figure 3 The figure shows an automated testing device for a leather tape measure, comprising a position limiting assembly 1. In this embodiment, the position limiting assembly 1 includes a slide rail 11 and a plurality of fixed blocks 12. The slide rail 11 is linear and has a first end 111 and a second end 112 opposite to each other along a first direction. The fixed blocks 12 are distributed along the first direction. The fixed blocks 12 can be evenly spaced or unevenly spaced.

[0025] like Figure 4 As shown, a fixing seat 123 is provided at the bottom of the fixing block 12, and two groove walls 122 are provided on the top surface of the fixing seat 123. The two groove walls 122 are respectively located on both sides of the slide rail 11 along the second direction. The two groove walls 122 extend upward, and a limiting groove 121 is formed between the two groove walls 122. The slide rail 11 is accommodated inside the limiting groove 121; the width of the limiting groove 121 is equal to or slightly larger than the width of the slide rail 11, and fixing screws 124 are provided on the groove walls 122. After the fixing screws 124 pass through the groove walls 122, they abut against the side of the slide rail 11, so that the fixing block 12 and the slide rail 11 can be fixed to each other. The width of the fixing seat 123 is greater than the width between the outer surfaces of the two groove walls 122. Both sides of the fixing seat 123 extend outward to form a protrusion 126. The protrusion 126 is provided with a fixing screw hole 125 so that the fixing block 12 can be fixed to the components of the external environment (such as the support frame, the test bench), thereby assisting in fixing the slide rail 11.

[0026] In order to test the accuracy and durability of the tape measure 6, it is necessary to repeatedly pull the tape 62 out of the ruler body 61 at different speeds and record the measurement readings of the tape measure 6. Figure 2As shown, in addition to the limiting assembly 1, a first clamping assembly 2 and a second clamping assembly 3 are also provided. The first clamping assembly 2 is used to secure the body of the measuring tape 6 and is located at one end of the slide rail 11 (in this embodiment, specifically the second end 112. Those skilled in the art will appreciate that the first end 111 may also be provided, and this is not a limitation in this application). The second clamping assembly 3 is used to connect to the tap of the measuring tape 62 and is capable of sliding along the slide rail 11. When the second clamping assembly 3 slides toward the first end 111 (i.e., sliding away from the first clamping assembly 2), the measuring tape 62 is pulled out of the measuring tape 61 by the first clamping assembly. When the second clamping assembly 3 slides toward the second end 112 (i.e., sliding toward the first clamping assembly 2), the measuring tape 62 retracts into the interior of the measuring tape 61. During actual testing, the measuring tape can be continuously pulled out from the interior of the measuring tape by simply driving the first clamping assembly 3 in reciprocating motion.

[0027] like Figure 5 As shown, the second clamping assembly 3 specifically includes a sliding portion 31 and a connecting portion 32. The sliding portion 31 specifically includes a first connecting block 311 and two ball sliders 312. The two ball sliders 312 are respectively located on either side of the first connecting block 311 and are fixedly connected to the first connecting block 311. The two ball sliders 312 also match the shape of the two side edges of the slide rail 11 along the second direction, so that the sliding portion 31 will not fall off the slide rail 11 during sliding along the slide rail 11. The top surface of the first connecting block 311 and the top surfaces of the two ball sliders 312 are located on the same horizontal plane, forming a fixed platform capable of supporting the connecting portion 32. The bottom of the connecting portion 32 is fixedly connected to the sliding portion 31. In this embodiment, the connecting portion 32 and the sliding portion 31 are fixed to each other by screws. Other connection methods can also be used, such as welding, clamping, gluing, etc., which will not be described in detail in this embodiment. The connecting portion 32 includes a second connecting block 321 extending along the third direction, a third connecting block 322 extending along the first direction, and a first clamping block 323. The bottom of the second connecting block 321 is fixedly connected to the top surface of the sliding portion 31; the first end of the third connecting block 322 along the first direction is fixedly connected to the top of the second connecting block 321; the first clamping block 323 and the third connecting block 322 are stacked on each other along the third direction, and the first clamping block 323 and the third connecting block 322 are connected by screws. When the screws are tightened, the first clamping block 323 and the third connecting block 322 are close to each other and clamped. When the screws are loosened, the first clamping block 323 and the third connecting block 322 are separated from each other to produce a gap. When the first clamping block 323 and the third connecting block 322 are clamped together, the tap of the ruler tape 62 can be fixedly connected.

[0028] like Figure 6As shown, in order to drive the second clamping assembly 3 to slide linearly, a second drive assembly 5 is also provided for driving the second clamping assembly 3 to move along the limit assembly 1. In this embodiment, the second drive assembly 5 specifically includes a stepper motor 51, a coupling 52, a first synchronous wheel fixing seat 53, a second synchronous wheel fixing seat 54, and a synchronous belt 55. The first synchronous wheel fixing seat 53 is fixed to the first end 111 of the slide rail 11, and the second synchronous wheel fixing seat 54 is fixed to the second end 112 of the slide rail 11. A first synchronous wheel is mounted inside the first synchronous wheel fixing seat 53, and a second synchronous wheel is mounted inside the second synchronous wheel fixing seat 54. The synchronous belt 55 extends in a first direction and, after passing through the first and second synchronous wheels, wraps around the top and bottom surfaces of the slide rail 11. The synchronous belt is tensioned by the two synchronous wheels and can be driven to rotate by the synchronous wheels. The synchronous belt 55 is located on one side of the top surface of the slide rail 11 and is fixedly connected to the first connecting block 311. The drive shaft of the stepper motor 51 is connected to one of the synchronous pulleys via a coupling 52. In this embodiment, the stepper motor 51 is connected to the second synchronous pulley. When the stepper motor 51 receives a signal and rotates, it drives the second synchronous pulley through the coupling 52, which in turn drives the synchronous belt. The rotation of the synchronous belt drives the first connecting block 311, which in turn drives the top connecting portion 32 and the tape 62 to move, thereby extending and retracting the tape measure.

[0029] like Figure 7 As shown, the top surface of the slide rail 11 is provided with a first groove 113 along the first direction; the portion of the synchronous belt 55 located on the top surface of the slide rail 11 is accommodated within the first groove 113. The first groove 113 is used to limit the synchronous belt 51, preventing the synchronous belt 55 from lateral displacement during its continuous reciprocating motion. The two side surfaces of the slide rail 11 along the second direction are provided with second grooves 114, which are used to cooperate with the ball slider 312. The balls of the ball slider 312 are embedded within the second grooves 114, allowing the ball slider 312 to slide along the second grooves 114. The two side surfaces of the slide rail 11 along the second direction are provided with third grooves 115, which are used to cooperate with the fixing screws 124. The fixing screws 124 pass through the groove wall 122 and then extend into the third grooves 115, thereby fixing the fixed block 12 to the slide rail 11.

[0030] like Figure 2 As shown, it also includes: a first clamping assembly 2; wherein the first clamping assembly 2 is used to fix the ruler body 61 of the leather tape measure 6. As mentioned in the aforementioned test requirements, the ruler tape needs to be pulled out from the ruler body at different angles, so the first clamping assembly 2 can also swing relative to the slide rail 11.

[0031] like Figure 8As shown, in order to raise the height of the first clamping assembly 2, an elevating frame 13 is provided at the second end of the slide rail 11. The bottom position of the elevating frame 13 is fixedly connected to the slide rail 11, and the first clamping assembly 2 is installed at the top position of the elevating frame.

[0032] like Figure 9 As shown, in order to keep the center line of the tape measure consistent with the center line of the slide rail, the raising frame 13 is also offset in the direction B2 during the upward extension process to provide avoidance space for the first clamping assembly 2 and the tape measure 6.

[0033] like Figure 10 As shown, a fixing platform 14 is installed on the top of the raising frame 13, and the fixing platform 14 includes a first fixing plate 141, a first annular plate 142 and a second annular plate 143; the first fixing plate 141, the first annular plate 142 and the second annular plate 143 are arranged in sequence along the second direction, wherein the first fixing plate 141 is fixedly connected to the raising frame 13 through a fixing member, the first annular plate 142 is fixedly connected to the first fixing plate 141 through a fixing member, and the second annular plate 143 is fixedly connected to the first annular plate 142 through a fixing member.

[0034] like Figure 10 and Figure 18 As shown, the first clamping assembly 2 includes a rotary bearing 21 and a support unit; the axis of the rotary bearing 21 is arranged along the second direction; the support unit is rotatably connected to the fixed platform 14 through the rotary bearing 21, and the support unit can swing between the first position and the second position relative to the fixed platform 14. When observing along the second direction toward the direction B2, the angle between the line between the opening of the ruler body 61 and the center of gravity of the ruler body 61 and the straight line where the ruler tape 62 is located is set to β. When the support unit swings to the first position, the angle , which means that the entire ruler body deflects and rotates downward; when the support unit swings to the second position, the angle , which means that the entire ruler body is deflected and rotated upward. The supporting unit specifically includes: a second fixing plate 22, a third fixing plate 23, and a fourth fixing plate 24. Among them, the second fixing plate 22, the third fixing plate 23, and the fourth fixing plate 24 are arranged in sequence along the second direction, and the second fixing plate 22, the third fixing plate 23, and the fourth fixing plate 24 are fixedly connected to each other by fixing members. The first annular plate 142 and the second annular plate 143 are both fixedly connected to the outer ring of the rotating bearing 21, and the second fixing plate 22 and the third fixing plate 23 are both fixedly connected to the inner ring of the rotating bearing 21; when the inner ring and the outer ring of the rotating bearing 21 rotate relative to each other, the fourth fixing plate 24 can rotate relative to the fixed platform 14 around the axis of the rotating bearing 21.

[0035] like Figure 8As shown, the fourth fixing plate 24 has a circular structure. Of course, the fourth fixing plate 24 can also adopt other shapes, such as a fan-shaped structure, a strip structure, etc. The center of the circle of the fourth fixing plate 24 is coaxial with the rotating bearing 21. One side of the fourth fixing plate 24 is fixedly connected to the third fixing plate 23. The other side of the fourth fixing plate 24 is provided with a clamp 25, which includes a second clamping block 251 and a fourth connecting block 252. One side of the fourth connecting block 252 is fixedly connected to the fourth fixing plate 24 by screws. The second clamping block 251 is fixedly connected to the fourth connecting block 252 by screws. The width of the fourth connecting block 252 in the second direction is equal to or slightly smaller than the width of the ruler body 61. When the screws are tightened, the second clamping block 251 can provide a clamping force to the ruler body 61 in the second direction, pressing the ruler body against the fourth fixing plate 24, so that the ruler body can rotate with the fourth fixing plate. A support block 27 is also provided on the fourth fixing plate 24. In the third direction, the support block 27 is installed below the ruler body 61 to provide support for the ruler body 61 and prevent the ruler body 61 from sliding downward under the influence of gravity during the test.

[0036] like Figure 8 、 Figure 10 、 Figure 11 As shown, a finger unit 26 for simulating a human hand pressing the record button 63 is also provided on the fourth fixing plate 24. The finger unit 26 includes a fifth fixing plate 261, a sixth fixing plate 263, and a push-pull electromagnet 265. The plane of the fifth fixing plate 261 is parallel to the plane of the fourth fixing plate 24. The fifth fixing plate is provided with a first waist-shaped hole 262, which extends along the length of the fifth fixing plate 261. The fifth fixing plate 261 is fixedly connected to the fourth fixing plate 24 via a fixing member, and the fifth fixing plate can also slide and adjust along the extension direction of the first waist-shaped hole 262. The plane of the sixth fixing plate 263 intersects with the plane of the fifth fixing plate 261. The sixth fixing plate 263 is provided with at least one second waist-shaped hole 264, which extends along the width of the sixth fixing plate 263. The push-pull electromagnet 265 is fixedly connected to the sixth fixing plate 263 via a fixing member. The push-pull electromagnet 265 also slides and adjusts along the extension direction of the second waist-shaped hole 264. The long axis of the first waist-shaped hole 262 and the long axis of the second waist-shaped hole 264 intersect. A buffer 266 is fixedly mounted on the driving end of the push-pull electromagnet 265. The buffer 266 simulates a human hand pressing the record button 63 on the ruler body 61. The first waist-shaped hole 262 is used to adjust the height position of the push-pull electromagnet 265, while the second waist-shaped hole 264 is used to adjust the position of the push-pull electromagnet 265 in the second direction, so that the driving end of the push-pull electromagnet 265 can be aligned with the record button.

[0037] Further, such as Figure 8As shown, a plurality of finger units 26 are provided on the fourth fixing plate 24 , which can press the recording button 63 of the measuring tape 6 from different directions.

[0038] To drive the first clamping assembly 2 and the tape measure, a first drive assembly is mounted on the elevated frame 13. In this embodiment, the first drive assembly is a steering gear 4. The steering gear 4 is fixedly connected to the first fixing plate 141. The drive shaft of the steering gear 4 is in driving connection with the second fixing plate 22. Driven by the rotary bearing 21, the power output from the drive shaft of the steering gear 4 drives the fourth fixing plate 24 to rotate.

[0039] During actual testing, to ensure that the extended length of the tape measure 6 is consistent with the predetermined drive distance of the second drive assembly 5, the direction in which the tape 62 is extended must be parallel to the slide rail 11. This ensures that the distance the first clamping assembly 2 moves on the slide rail is equal to the distance the tape is extended from its opening. In other words, during testing, the opening of the tape body 61 must be maintained at a specific height, regardless of its rotation. Therefore, when attaching the tape measure 6 to the fourth fixing plate 24, the opening of the tape body 61 must overlap as closely as possible with the center of the fourth fixing plate 24. This ensures that the height of the opening remains constant regardless of the tape body's rotation. Furthermore, the heights of the third connecting block 322 and the first clamping block 323 of the second clamping assembly 3 must be aligned with the center of the fourth fixing plate 24 to ensure that the tape 62 remains horizontal when extended.

[0040] like Figure 17 As shown, in the first direction, the length of the third connecting block 322 is equal to the radius of the fourth fixing plate 24. When the second clamping assembly 3 is moved to the outermost position toward the second end 112, the second connecting block 321 is tangent to the edge of the fourth fixing plate 24. The edge of the third connecting block 322 is located exactly at the center of the fourth fixing plate 24, which means that the tap of the measuring tape 6 is located at the opening of the ruler body 61. The height of the second connecting block 321 in the third direction is equal to the radius of the fourth fixing plate 24. Thus, when the second connecting block 321 is extended upward, the height of the third connecting block 322 is exactly at the center of the fourth fixing plate 24.

[0041] like Figure 18 As shown, when the opening of the ruler body 61 is located at the center of the fourth fixing plate 24, when viewed along the second direction B2, the entire main body of the ruler body 61 is located to the right of the center. If the fourth fixing plate 24 is divided into a first area X1 and a second area X2 by a diameter extending along the third direction, then the ruler body 61 and the clamp 25 are both located in the second area X2.

[0042] The control component can be a computer device such as an MCU, a single-chip microcomputer, or an edge computing terminal capable of executing predetermined programs. The control component is communicatively connected to the stepper motor 51, the servo 4, and the finger unit 26. The control component is also communicatively connected to the leather tape measure 6. The control component is communicatively connected to the stepper motor 51 and can control the stepper motor 51 to rotate according to a predetermined program, thereby moving the second clamping assembly along the slide rail 11 a first distance Ds. The control component is also communicatively connected to the servo 4 and can control the servo 4 to rotate according to a predetermined program, thereby rotating the fourth fixing plate 24 and the ruler body 61 by a predetermined angle, thereby adjusting the angle between the ruler tape 62 and the ruler body 61. The control component is also communicatively connected to the finger unit and can control the push-pull electromagnet 265 of the finger unit 26 to extend or retract, simulating a finger pressing the record button 63. The control component is communicatively connected to the leather tape measure and can record the second distance Dm measured by the tape measure after the record button 63 is pressed.

[0043] like Figures 12 to 15 As shown, a first sensing component 116, a second sensing component 117, and a third sensing component 118 are also disposed on the side of the slide rail 12. In a first direction, the first sensing component 116 is located at the first end 111 of the slide rail, the second sensing component 117 is located at the second end 112 of the slide rail, and the third sensing component 118 is located between the first sensing component 116 and the second sensing component 117. In this embodiment, the sensing components are specifically photoelectric sensors. The first sensing component 116, the second sensing component 117, and the third sensing component 118 are all in communication with the control component. A blocking portion 33 is fixedly disposed on the bottom surface of the second clamping component 3. When the blocking portion 33 is within the sensing component area, it can trigger the corresponding function according to a predetermined program. In this embodiment, the first sensing component 116 and the second sensing component 117 serve as limit points. When the second clamping component 3 moves to the position of the first sensing component 116, it indicates that the second clamping component 3 has moved to the limit position near the first end 111, and the control component issues a command to stop the stepper motor 51. When the second clamping component 3 moves to the position of the second sensing component 117, it indicates that the second clamping component 3 has moved to the limit position near the second end 112, and the control component issues a command to stop the stepper motor 51. The third sensing component 118, located between the first sensing component 116 and the second sensing component 117, is used to provide positioning for the second clamping component 3. In the event of an unexpected shutdown or restart, the control component cannot determine the position of the second clamping component 3. When the second clamping component 3 is sensed by the third sensing component 118, it can be used as the origin position of the second clamping component 3 for the control component.

[0044] Example 2 Compared with Example 1, the difference of this embodiment is that the second drive component 5 is specifically a screw motor, the screw of the screw motor extends along the first direction, and a screw slider is provided at the bottom of the sliding part 31; the screw slider is engaged with the screw, and when the screw motor rotates, the screw slider can be driven by the screw to slide along the slide rail 11 to drive the connecting part 32 to rotate.

[0045] Example 3 Based on the first embodiment, this embodiment further provides a method for testing a leather tape measure. Figure 19 As shown, the test method includes the following steps: S1. Fix the ruler body to the first clamping assembly; fix the ruler tape to the second clamping assembly; S2, establishing a communication connection between the control component and the tape measure; S3. Drive the second drive assembly to drive the second clamping assembly to slide a first distance Ds toward the first end at a predetermined speed along the first direction; after driving the tape to move outward, record the measured data of the tape as a second distance Dm; S4. Record the first distance Ds and the second distance Dm into the system as a distance data pair; S5. After controlling the first driving assembly to drive the first clamping assembly 2 to rotate a predetermined angle and / or change a predetermined speed, repeat steps S1-S5 to obtain multiple sets of distance data pairs; and determine whether the tape measure meets the predetermined standard based on the distance data pairs.

[0046] Further, such as Figure 20 As shown, this embodiment also provides a flow chart for testing the accuracy of digital conversion of the pulled-out length of a leather tape measure at different pulling-out speeds.

[0047] Further, such as Figure 21 As shown, this embodiment also provides a durability test flow chart of the stretching-recovery function of the ruler tape at different extension angles.

[0048] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. Digital leather tape measure automatic testing equipment, characterized by: include: A limiting assembly, wherein the limiting assembly is provided with a first end and a second end along a first direction; a first clamping assembly, for fixing the body of the measuring tape and capable of swinging relative to the limiting assembly to adjust the angle between the body and the measuring tape; a second clamping assembly for clamping the tape of the measuring tape and being movable along the limiting assembly, wherein when the first clamping assembly moves toward the first end, the tape is pulled out of the tape body by the first clamping assembly; and when the first clamping assembly moves toward the second end, the tape is retracted into the tape body; a first driving assembly, configured to drive the first clamping assembly to swing; a second driving assembly, configured to drive the second clamping assembly to move along the limiting assembly at different speeds; A control component is connected in communication with the first drive component to control the swing angle of the first clamping component; is connected in communication with the second drive component to control the second clamping component to move a first distance; and is connected in communication with the tape measure to read the second distance measured by the tape measure.

2. The digital leather tape measure automatic testing device according to claim 1, characterized in that: The first clamping assembly includes: a rotary bearing and a support unit; The support unit is connected to the limit assembly via the rotary bearing, and the support unit can swing between a first position and a second position relative to the limit assembly; the drive shaft of the first drive assembly is in transmission connection with the support unit; When the support unit swings to the first position relative to the limiting assembly, ; When the support unit swings to the second position relative to the limiting assembly, .

3. The digital leather tape measure automatic testing device according to claim 2, characterized in that: The supporting unit includes: a fourth fixing plate and a clamp; One side of the fourth fixing plate is fixedly connected to the rotary bearing; The plane where the fourth fixing plate is located is perpendicular to the second direction, and the second direction intersects with the first direction; The clamp is fixedly arranged on the other side of the fourth fixing plate, and is used to press the ruler onto the fourth fixing plate along the second direction.

4. The digital leather tape measure automatic testing device according to claim 3, characterized in that: The opening of the ruler body overlaps with the axis of the rotary bearing; the ruler body and the clamp are both located in the second area X2.

5. The digital leather tape measure automatic testing device according to claim 3, characterized in that: The fourth fixing plate is further provided with a finger unit, and the finger unit is used to press the record button on the ruler body; The finger unit specifically includes: a push-pull electromagnet, a fifth fixing plate and a sixth fixing plate; The fifth fixing plate is adjustably mounted on the fourth fixing plate; The sixth fixing plate is fixedly connected to the fifth fixing plate; The push-pull electromagnet is adjustably mounted on the sixth fixing plate; The driving end of the push-pull electromagnet points to the record button.

6. The digital leather tape measure automatic testing device according to claim 5, characterized in that: The fifth fixing plate is provided with a first waist-shaped hole; the first waist-shaped hole extends along the length direction of the fifth fixing plate; A second waist-shaped hole is formed on the sixth fixing plate, and the second waist-shaped hole extends along the width direction of the sixth fixing plate; The long axis of the first waist-shaped hole and the long axis of the second waist-shaped hole intersect with each other.

7. The digital leather tape measure automatic testing device according to claim 5, characterized in that: A plurality of finger units are provided on the fourth fixing plate, and the axes of the driving shafts of the plurality of finger units intersect with each other.

8. The digital leather tape measure automatic testing device according to claim 3, characterized in that: The second clamping assembly includes: a sliding portion, a second connecting block, a third connecting block and a first clamping block; The sliding portion is slidably connected to the limiting assembly; the second connecting block extends along a third direction, the third connecting block extends along the first direction, and the third direction intersects the first direction; One end of the second connecting block is fixedly connected to the sliding part, and the other end of the second connecting block is fixedly connected to one end of the third connecting block; the first clamping block is installed at the other end of the third connecting block for clamping the tape.

9. The digital leather tape measure automatic testing device according to claim 8, characterized in that: The fourth fixing plate has a circular structure; The length of the second connecting block along the third direction is equal to the radius of the fourth fixing plate; The length of the third connecting block along the first direction is equal to the radius of the fourth fixing plate.

10. A digital leather tape measure automated testing method, characterized in that: Applied to the automatic testing device for a leather tape measure according to any one of claims 1 to 9, the method comprising: S1. Fix the ruler body on the first clamping assembly; fix the ruler tape on the second clamping assembly; S2, establishing a communication connection between the control component and the tape measure; S3, driving the second driving assembly to drive the second clamping assembly to slide a first distance toward the first end at a predetermined speed along the first direction; after driving the tape ruler to move outward, recording the measurement data of the tape ruler as a second distance; S4. Recording the first distance and the second distance into the system as a distance data pair; S5. After controlling the first driving assembly to drive the first clamping assembly 2 to rotate a predetermined angle and / or changing the predetermined speed, repeat steps S1-S5 to obtain multiple sets of distance data pairs; and determine whether the tape measure meets the predetermined standard based on the distance data pairs.

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