Torsion detection device and detection equipment
By alternating the clamping and detection components to prevent cord twisting, and through the cooperation of the image acquisition unit and the control unit, highly compatible detection of cords of different specifications is achieved. This solves the problem of needing to replace parts in existing equipment, improves detection efficiency, and reduces costs.
Patent Information
- Application Number
- CN202423134331.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing torsion testing equipment requires the replacement of parts when dealing with cords of different lengths, diameters, and braiding methods, resulting in poor compatibility, high testing costs, and low production efficiency.
By using a method where clamping and detection components alternately block the twisting of the cord, the image acquisition unit acquires the image information of the cord, and the control unit controls the detection component to switch between the extended and retracted positions, thus achieving compatible detection of cords of different specifications.
It can be used for testing any size of cord without changing any parts, which improves testing efficiency and reduces testing costs.
Smart Images
Figure CN223841667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of testing equipment for cords, specifically to a torsion testing device and testing equipment. Background Technology
[0002] The number of twists is an important technical indicator of steel cord wire. The data obtained by automatic detection using twist testing equipment is accurate and reliable, which is beneficial to improving the quality of steel cord.
[0003] However, current torsion testing equipment typically only supports torsion testing for one or a few specifications of cord. When testing cords of different lengths, diameters, and braiding methods, it is necessary to replace components to adjust the stroke and position of the torsion mechanism to achieve compatibility with different cord specifications. Therefore, torsion testing equipment often requires multiple specifications of components, resulting in high testing costs. Furthermore, replacing components can extend production cycle time and reduce production efficiency to some extent. Utility Model Content
[0004] In view of this, the present invention provides a torsion testing device and testing equipment to solve the problem of poor compatibility of current torsion testing equipment.
[0005] In a first aspect, this utility model provides a torsion detection device for detecting the torsion of a cord, the cord including intersecting and connected first cord segments and second cord segments; the torsion detection device includes: a detection unit, including a clamping assembly and two sets of detection assemblies; the clamping assembly and the detection assemblies are spaced apart along a first direction, the clamping assembly is used to clamp or release the first cord segment, and to position the second cord segment between the clamping assembly and the detection assemblies; the detection assemblies have an extended position close to the clamping assembly and a retracted position away from the clamping assembly; in the extended position, the detection assemblies are adapted to prevent the second cord segment from torsion; in the retracted position, the detection assemblies are adapted to allow the second cord segment to torsion; when one of the two sets of detection assemblies is in the extended position, the other is in the retracted position; an image acquisition unit is used to acquire image information of the second cord segment; a control unit is electrically connected to the detection assemblies and the image acquisition unit; the image acquisition unit is adapted to transmit the acquired image information of the second cord segment to the control unit, and the control unit is adapted to control the detection assemblies to switch between the extended position and the retracted position according to the image information of the second cord segment.
[0006] In one alternative embodiment, the clamping assembly includes a first mounting plate with a positioning groove for placing a first cord segment; along a second direction, two sets of detection components are respectively located on both sides of the positioning groove; wherein the first direction intersects the second direction.
[0007] In one optional embodiment, the detection component includes a first stop and a second stop connected to each other, and the first stop and the second stop are spaced apart along a third direction; in the extended position, both the first stop and the second stop are adapted to prevent the second curtain segment from twisting; wherein the third direction intersects with both the first direction and the second direction.
[0008] In one alternative embodiment, the detection component includes a first driving member electrically connected to a control unit, and the driving end of the first driving member is adapted to extend or shorten under the control of the control unit; the driving end of the first driving member forms a first stop or a second stop.
[0009] In one optional embodiment, the detection unit includes a second mounting plate, the second mounting plate being provided with a clearance groove, a first stop bar and a second stop bar passing through the clearance groove along a first direction and being slidably connected to the clearance groove; and / or, the first mounting plate being provided with a clearance hole passing through along the first direction, the clearance hole being opposite to the first stop bar and the second stop bar along the first direction.
[0010] In one alternative embodiment, the second mounting plate has a notch located between the two sets of detection components and opposite to the positioning groove along the first direction.
[0011] In one alternative embodiment, the clamping assembly includes a clamping member and a second driving member; the clamping member has a clamping state that clamps and fixes the first cord segment into the positioning groove and a releasing state that releases the first cord segment; the driving end of the second driving member is hinged to the clamping member, and the driving end of the second driving member is adapted to drive the clamping member to swing when it extends or shortens, so that the clamping member switches between the clamping state and the releasing state.
[0012] In one alternative embodiment, the clamping member includes a clamping portion and two jaw portions; the clamping portion is connected to one of the jaw portions; the driving end of the second driving member is hinged to the two jaw portions, and the driving end of the second driving member is adapted to drive the two jaw portions away from or towards each other when extending or shortening.
[0013] In one alternative embodiment, the first mounting plate has a clamping platform, and at least a portion of the positioning groove is formed on the clamping platform; the clamping part is located above the clamping platform, and in the clamping state, the clamping part presses the first cord segment into the positioning groove of the clamping platform.
[0014] Secondly, this utility model also provides a testing device, including: the torsion testing device as described above.
[0015] Using the technical solution of this utility model, the control unit uses the image information of the second curtain segment acquired by the image acquisition unit to control the detection component to switch between the extended and retracted positions. The two sets of detection components alternately occupy the extended and retracted positions, thereby alternately blocking the second curtain segment. When the second curtain segment stops rotating, the number of times the detection component extends and retracts is the number of twists of the second curtain segment. This utility model's torsion detection device, through two sets of detection components alternately blocking the curtain twist, ultimately obtains the number of twists of the curtain based on the number of extensions and retractions of the detection components. Its testing method is applicable to curtains of any specification, has high compatibility, requires no replacement of parts, reduces testing costs, and improves testing efficiency. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the cord structure;
[0018] Figure 2 This is a schematic diagram of the detection unit of this utility model from one perspective;
[0019] Figure 3 This is a schematic diagram of the detection unit of this utility model from another perspective;
[0020] Figure 4 for Figure 3 A magnified view of part A in the diagram;
[0021] Figure 5 This is a cross-sectional view of the detection unit of this utility model in the first direction;
[0022] Figure 6 This is a schematic diagram of the image acquisition unit of this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Cord; 11. First cord segment; 12. Second cord segment;
[0025] 2. Detection unit; 21. Clamping assembly; 211. First mounting plate; 2111. Positioning groove; 2112. Clearance hole; 2113. Clamping platform; 212. Clamping component; 2121. Clamping part; 2122. Gripper part; 213. Second driving component; 22. Detection assembly; 221. First stop bar; 222. Second stop bar; 223. First driving component; 224. Second mounting plate; 2241. Clearance groove; 2242. Notch; 225. Connector; 23. Base;
[0026] 3. Image acquisition unit; 31. Camera; 32. Light source; 33. Support;
[0027] X, first direction; Y, second direction; S, third direction. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] Because the diameter of the cord 1 is very small, typically on the order of millimeters, it is difficult to directly detect its twist. Therefore, this invention obtains the desired twist by bending the cord 1. Figure 1 The intersecting and connected first and second curtain segments 11 and 12 shown are designed to increase the range of motion of the curtain 1 during the twisting and releasing process, facilitating more intuitive observation of the twisting of the curtain 1. The first and second curtain segments 11 and 12, after bending, have a bending angle. The bending angle of the first and second curtain segments 11 and 12 can be adaptively adjusted according to actual testing requirements; this invention does not impose a specific limitation on this. For example, the bending angle of the first and second curtain segments 11 can be 90°.
[0030] The following is combined with Figures 2 to 6 The following describes embodiments of the present invention.
[0031] According to an embodiment of the present invention, a torsion detection device is provided for detecting the torsion of a cord 1. The torsion detection device includes a detection unit 2, an image acquisition unit 3, and a control unit (not shown in the figure). The control unit is electrically connected to both the detection unit 2 and the image acquisition unit 3 to facilitate precise control of the detection unit 2 and the image acquisition unit 3.
[0032] Specifically, the detection unit 2 includes a clamping assembly 21 and two sets of detection assemblies 22. The clamping assembly 21 and the detection assemblies 22 are spaced apart along a first direction X. The clamping assembly 21 is used to clamp or release the first curtain segment 11, and to position the second curtain segment 12 between the clamping assembly 21 and the detection assemblies 22. The detection assemblies 22 have an extended position close to the clamping assembly 21 and a retracted position away from the clamping assembly 21. In the extended position, the detection assemblies 22 are adapted to prevent the second curtain segment 12 from twisting; in the retracted position, the detection assemblies 22 are adapted to allow the second curtain segment 12 to twist. Furthermore, when one set of detection assemblies 22 is in the extended position, the other is in the retracted position.
[0033] Furthermore, the image acquisition unit 3 is used to acquire image information of the second curtain segment 12, and is adapted to transmit the acquired image information of the second curtain segment 12 to the control unit. The control unit is adapted to control the detection component 22 to switch between the extended position and the retracted position according to the image information of the second curtain segment 12.
[0034] In this embodiment, the control unit uses the image information of the second curtain segment 12 acquired by the image acquisition unit 3 to control the detection component 22 to switch between the extended and retracted positions. The two sets of detection components 22 alternately occupy the extended and retracted positions, thereby alternately blocking the second curtain segment 12. When the second curtain segment 12 stops rotating, the number of times the detection component 22 extends and retracts is the number of twists of the second curtain segment 12. This invention's torsion detection device uses two sets of detection components 22 to alternately block the torsion of the curtain 1, ultimately obtaining the number of twists of the curtain 1 based on the number of extensions and retractions of the detection component 22. Its testing method is applicable to curtains of any specification, offering high compatibility, eliminating the need to replace parts, reducing testing costs, and improving testing efficiency.
[0035] The control unit can obtain the position information of the second curtain segment 12 based on the image information of the second curtain segment 12, and more specifically, the angle information when the second curtain segment 12 contacts the detection component 22.
[0036] For example, when the second curtain segment 12 comes into contact with the detection component 22, the angle between the second curtain segment 12 and the vertical direction is preset as the trigger angle. When the control unit detects that the second curtain segment 12 is at the trigger angle based on the image information of the second curtain segment 12, it controls the detection component 22 to switch from the extended position to the retracted position.
[0037] Understandably, the trigger angle can also be preset to the angle between the second curtain segment 12 and the horizontal direction when the second curtain segment 12 contacts the detection component 22. This utility model does not limit the setting method and specific angle value of the trigger angle, as long as it can indicate that the second curtain segment 12 is in contact with the detection component 22 and the second curtain segment 12 is in a state of temporary stop or about to stop twisting.
[0038] Among them, such as Figure 2 and 3 As shown, the vertical direction is the direction Z in the diagram, and the horizontal direction is the direction Y in the diagram.
[0039] To facilitate the description of the testing process of the torsion testing device of this utility model, the two testing components 22 are defined as the first testing component and the second testing component, respectively. Initially, the first testing component is in the extended position, and the second testing component is in the retracted position. The actual testing process of the torsion testing device of this utility model is as follows:
[0040] The clamping assembly 21 releases the first cord segment 11, and under the action of the internal stress of the cord 1, the first cord segment 11 and the second cord segment 12 begin to twist;
[0041] When the second curtain segment 12 comes into contact with the first detection component, the control unit detects that the second curtain segment 12 is at the trigger angle by acquiring the image information of the second curtain segment 12 through the image acquisition unit 3; the control unit controls the first detection component to switch from the extended position to the retracted position, and controls the second detection component to switch from the retracted position to the extended position, and the first curtain segment 11 and the second curtain segment 12 continue to twist.
[0042] When the second curtain segment 12 comes into contact with the second detection component, the control unit detects that the second curtain segment 12 is at the trigger angle by acquiring the image information of the second curtain segment 12 through the image acquisition unit 3; the control unit controls the second detection component to switch from the extended position to the retracted position, and controls the first detection component to switch from the retracted position to the extended position, and the first curtain segment 11 and the second curtain segment 12 continue to twist.
[0043] Repeat the above steps until the first cord segment 11 and the second cord segment 12 completely stop twisting.
[0044] Understandably, the trigger angles of the first detection component and the second detection component can be the same or different. The trigger angles of the first and second detection components depend on their respective settings, while the construction of the first and second detection components can be identical.
[0045] Furthermore, such as Figures 2-5As shown, the clamping assembly 21 includes a first mounting plate 211 with a positioning groove 2111 for placing the first cord segment 11. Along the second direction Y, two sets of detection assemblies 22, namely the first detection assembly and the second detection assembly, are located on opposite sides of the positioning groove 2111. The first direction X intersects the second direction Y. In some cases, the first direction X may be perpendicular to the second direction Y, which is the aforementioned horizontal direction. The first direction X, the second direction Y, and the aforementioned vertical direction Z are all perpendicular to each other. In this embodiment, the two detection assemblies 22 are located on opposite sides of the positioning groove 2111 to provide a larger rotational stroke for the cord 1 between them, allowing the detection assemblies 22 to switch between extended and retracted positions in a timely manner, blocking the cord 1 and ensuring detection accuracy.
[0046] For example, the two sets of detection components 22 can be arranged symmetrically with respect to the positioning groove 2111, or axially symmetrically. For example, as Figure 5 As shown, the two sets of detection components 22 are symmetrically arranged with respect to the center of the positioning groove 2111, and there is a difference in the setting height of the two sets of detection components 22 in the vertical direction Z, so that the two sets of detection components 22 can form different trigger angles respectively, which makes it easy for the control unit to accurately control the switching of the positions of the two sets of detection components 22 according to the trigger angle.
[0047] For example, the positioning groove 2111 may be located on the top of the first mounting plate 211 and extend through the first mounting plate 211 in the first direction X, so as to facilitate the placement of the cord 1 during testing.
[0048] More specifically, in some embodiments, the detection component 22 includes a first stop 221 and a second stop 222 connected to each other, with the first stop 221 and the second stop 222 spaced apart along a third direction S. In the extended position, both the first stop 221 and the second stop 222 are adapted to prevent the second curtain segment 12 from twisting. The third direction S intersects both the first direction X and the second direction Y. Understandably, after the first curtain segment 11 is released, the second curtain segment 12 may rotate clockwise or counterclockwise. In this embodiment, by setting the first stop 221 and the second stop 222, the second curtain segment 12 can contact the first stop 221 and the second stop 222 respectively when rotating clockwise or counterclockwise. The rotation direction of the second curtain segment 12 can be accurately determined based on the angle at which the second curtain segment 12 contacts the first stop 221 and the angle at which the second curtain segment 12 contacts the second stop 222.
[0049] For example, the triggering angle of the detection component 22 is divided into a counterclockwise triggering angle and a clockwise triggering angle. Figure 5Taking the example shown, the left side represents the first detection component, which is initially in the extended position. During actual detection, after the first curtain segment 11 is released, the second curtain segment 12 first contacts the first stop 221 or the second stop 222 of the first detection component. At this time, the counterclockwise trigger angle is the angle at which the second curtain segment 12 contacts the first stop 221, and the clockwise trigger angle is the angle at which the second curtain segment 12 contacts the second stop 222. During actual detection, when the second curtain segment 12 first contacts the first detection component, if the control unit detects that the second curtain segment 12 has a counterclockwise trigger angle, it can determine that the curtain 1 is rotating counterclockwise; if the control unit detects that the second curtain segment 12 has a clockwise trigger angle, it can determine that the curtain 1 is rotating clockwise.
[0050] For example, the third direction S can be parallel to the vertical direction Z, that is, the first stop 221 and the second stop 222 are spaced apart in the vertical direction Z.
[0051] For example, such as Figure 5 As shown, the third direction S can also intersect the vertical direction Z, that is, the detection component 22 is tilted towards the positioning groove 2111, so that there is a difference between the distance between the first stop 221 and the positioning groove 2111 and the distance between the second stop 222 and the positioning groove 2111. For example, the distance between the first stop 221 and the positioning groove 2111 is the first distance, and the distance between the second stop 222 and the positioning groove 2111 is the second distance. The first distance can be smaller than the second distance. This setting allows the counterclockwise trigger angle and the clockwise trigger angle to have different angle values, which is beneficial for accurately determining the rotation direction of the cord 1.
[0052] In some embodiments, the detection component 22 includes a first driving member 223, which is electrically connected to the control unit. The driving end of the first driving member 223 is adapted to extend or retract under the control of the control unit. The driving end of the first driving member 223 forms a first stop 221 or a second stop 222. In this embodiment, the control unit controls the first stop 221 and the second stop 222 to switch between an extended position and a retracted position via the first driving member 223.
[0053] For example, the first driving component 223 can be a cylinder, a hydraulic cylinder, or an electric telescopic rod, preferably a cylinder, which has a fast response.
[0054] For example, the detection unit 2 includes a second mounting plate 224, which is spaced apart from the first mounting plate 211 along a first direction X. The detection component 22 is mounted on the second mounting plate 224. The first driving member 223 is a cylinder, including a cylinder body and a piston rod, which forms a second stop rod 222. The first stop rod 221 and the second stop rod 222 are connected by a connector 225 to form an integral structure. The first driving member 223 is connected to the second mounting plate 224, and the first stop rod 221 is slidably connected to the second mounting plate 224. When the first driving member 223 drives the second stop rod 222 to extend or retract, it can synchronously drive the first stop rod 221 to slide, thereby enabling both to switch synchronously between the extended and retracted positions.
[0055] For example, along the first direction X, the cylinder of the first drive member 223 is connected to the side of the second mounting plate 224 away from the first mounting plate 211, and the second stop 222 passes through the second mounting plate 224 along the first direction X. The second stop 222 is slidably connected above the first drive member 223. The torsion detection device configured in this way has a compact structure and occupies little space.
[0056] In some embodiments, such as Figure 3 As shown, the second mounting plate 224 is provided with a clearance groove 2241. The first stop rod 221 and the second stop rod 222 pass through the clearance groove 2241 along the first direction X and are slidably connected to the clearance groove 2241. Exemplarily, the connecting member 225 is connected to the end of the first stop rod 221 and the second stop rod 222 away from the cylinder body, that is, the end away from the second mounting plate 224. The first stop rod 221, the second stop rod 222, and the connecting member 225 are collectively constructed as a U-shaped structure. When the first stop rod 221 and the second stop rod 222 are in the retracted position, the first stop rod 221 and the second stop rod 222, or the connecting member 225, can be embedded in the clearance groove 2241.
[0057] In some embodiments, the first mounting plate 211 is provided with a clearance hole 2112 extending along a first direction X, and the clearance hole 2112 is opposite to the first stop 221 and the second stop 222 along the first direction X. When the first stop 221 and the second stop 222 are in the extended position, the first stop 221 and the second stop 222 or the connector 225 can be embedded in the clearance hole 2112.
[0058] Setting up the clearance groove 2241 and clearance hole 2112 can prevent the first stop bar 221 and the second stop bar 222 from interfering with the first mounting plate 211 or the second mounting plate 224 when switching between the extended position and the retracted position, thereby improving the reliability of the detection.
[0059] Understandably, this utility model does not specifically limit the shape and structure of the clearance groove 2241 and the clearance hole 2112, as long as they can provide clearance for the first stop 221 and the second stop 222. For example, the clearance groove 2241 can be constructed as a waist-shaped groove, and the clearance hole 2112 can be constructed as a waist-shaped hole. Furthermore, in the vertical direction Z, both the clearance groove 2241 and the clearance hole 2112 are inclined towards the positioning groove 2111.
[0060] In some embodiments, the second mounting plate 224 is provided with a notch 2242, which is located between the two sets of detection components 22 and is opposite to the positioning groove 2111 along the first direction X, so that the image acquisition unit 3 can acquire the image information of the second curtain segment 12.
[0061] Along the first direction X, the image acquisition unit 3 is located on one side of the detection unit 2, specifically on the side of the detection component 22 away from the clamping component 21. For example, along the first direction X, the image acquisition unit 3 is directly opposite the notch 2242 to facilitate the acquisition of image information of the second curtain segment 12.
[0062] For example, such as Figure 6 As shown, the image acquisition unit 3 may include a support 33, a camera 31, and a light source 32. Both the camera 31 and the light source 32 are mounted on the support 33 and are positioned along the first direction X. The light source 32 is located between the camera 31 and the detection unit 2. For example, the camera 31 can be a planar array camera 31, which can automatically determine and change the visual template, resulting in a high degree of automation. For example, the light source 32 can be a ring light source and is arranged coaxially with the lens of the camera 31.
[0063] Furthermore, in some embodiments, such as Figure 3 and Figure 4 As shown, the clamping assembly 21 includes a clamping member 212 and a second driving member 213. The clamping member 212 has a clamping state that clamps and fixes the first curtain segment 11 into the positioning groove 2111, and a releasing state that releases the first curtain segment 11. The driving end of the second driving member 213 is hinged to the clamping member 212, and the driving end of the second driving member 213 is adapted to drive the clamping member 212 to swing during extension or shortening, so that the clamping member 212 switches between the clamping state and the releasing state. It can be understood that the second driving member 213 can be electrically connected to the control unit to control the clamping member 212 to switch between the clamping state and the releasing state, so as to fix or release the first curtain segment 11. In this embodiment, by setting the clamping member 212 and the second driving member 213, the automatic fixing or releasing of the first curtain segment 11 can be achieved, further improving the automation level of the torsion detection device.
[0064] More specifically, in some embodiments, such as Figure 4As shown, the clamping member 212 includes a clamping part 2121 and two gripper parts 2122, with the clamping part 2121 connected to one of the gripper parts 2122. The driving end of the second driving member 213 is hinged to the two gripper parts 2122. The driving end of the second driving member 213 is adapted to drive the two gripper parts 2122 to move away from or towards each other during extension or retraction, thereby causing the clamping part 2121 to swing around the positioning groove 2111. By setting the gripper parts 2122, the linear motion of the second driving member 213 is converted into rotational motion, thereby driving the gripper parts 2122 to swing around the positioning groove 2111, allowing the clamping part 2121 to switch between a clamping state and a released state. In this embodiment, when in the fixed state, the first cord segment 11 is clamped and fixed between the clamping part 2121 and the positioning groove 2111. Since the clamping part 2121 is swingable, cords 1 of various sizes and specifications can be fixed between the clamping part 2121 and the positioning groove 2111, further improving the compatibility of the torsion detection device.
[0065] For example, the clamping part 2121 includes an intersecting and connected first plate part and a second plate part, which can be generally configured in an L-shape. The first plate part is connected to one of the gripper parts 2122, and the second plate part is located above the positioning groove 2111. Under the drive of the second drive member 213, the gripper part 2122 can drive the second plate part to swing around the positioning groove 2111 via the first plate part, so that the second plate part moves closer to or away from the positioning groove 2111.
[0066] In some embodiments, the first mounting plate 211 has a clamping platform 2113, and at least a portion of the structure of the positioning groove 2111 is formed on the clamping platform 2113. Specifically, the clamping platform 2113 is formed on the side of the first mounting plate 211 away from the second mounting plate 224 along the first direction X. Furthermore, a clamping assembly 21 is mounted on the side of the first mounting plate 211 away from the second mounting plate 224, and a clamping portion 2121 is located above the clamping platform 2113. In the clamped state, the clamping portion 2121 presses the first cord segment 11 against the positioning groove 2111 of the clamping platform 2113. In this embodiment, the clamping platform 2113 and the clamping portion 2121 jointly clamp and fix the cord 1, resulting in a simple and compact structure with high reliability in clamping and fixing.
[0067] For example, such as Figure 2 As shown, the detection unit 2 also includes a base 23, on which the first mounting plate 211 and the second mounting plate 224 are mounted. The base 23 facilitates the installation of the torsion detection device at a predetermined work station.
[0068] According to an embodiment of the present invention, another aspect provides a testing device, including a torsion testing device as described in the above embodiments. This testing device may further include a feeding device, a bending device, etc. The present invention does not specifically limit the structure of the testing device, as long as it includes the aforementioned torsion testing device and can achieve quality testing of the cord 1. Since the testing device of the present invention includes the aforementioned torsion testing device, it has the same technical effects as the torsion testing device, and will not be described again here.
[0069] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A torsion detection device for detecting the torsion of a cord (1), the cord (1) comprising intersecting and connected first cord segment (11) and second cord segment (12); characterized in that, The torsion detection device includes: The detection unit (2) includes a clamping assembly (21) and two sets of detection assemblies (22); the clamping assembly (21) and the detection assemblies (22) are spaced apart along a first direction (X); the clamping assembly (21) is used to clamp or release the first cord segment (11) and to position the second cord segment (12) between the clamping assembly (21) and the detection assemblies (22); the detection assemblies (22) have an extended position close to the clamping assembly (21) and a retracted position away from the clamping assembly (21); in the extended position, the detection assemblies (22) are adapted to prevent the second cord segment (12) from twisting; in the retracted position, the detection assemblies (22) are adapted to allow the second cord segment (12) to twist; when one of the two sets of detection assemblies (22) is in the extended position, the other is in the retracted position; Image acquisition unit (3) is used to acquire image information of the second curtain segment (12); The control unit is electrically connected to the detection component (22) and the image acquisition unit (3); the image acquisition unit (3) is adapted to transmit the image information of the acquired second curtain segment (12) to the control unit, and the control unit is adapted to control the detection component (22) to switch between the extended position and the retracted position according to the image information of the second curtain segment (12).
2. The torsion detection device according to claim 1, characterized in that, The clamping assembly (21) includes a first mounting plate (211), on which a positioning groove (2111) is provided, the positioning groove (2111) being used to place the first curtain segment (11); Along the second direction (Y), the two sets of detection components (22) are located on both sides of the positioning groove (2111); The first direction (X) intersects with the second direction (Y).
3. The torsion detection device according to claim 2, characterized in that, The detection component (22) includes a first stop (221) and a second stop (222) connected to each other. Along the third direction (S), the first stop (221) and the second stop (222) are spaced apart. In the extended position, both the first stop (221) and the second stop (222) are adapted to prevent the second cord segment (12) from twisting. Among them, the third direction (S) intersects with both the first direction (X) and the second direction (Y).
4. The torsion detection device according to claim 3, characterized in that, The detection component (22) includes a first drive member (223), which is electrically connected to the control unit. The drive end of the first drive member (223) is adapted to extend or shorten under the control of the control unit. The drive end of the first drive member (223) forms the first stop (221) or the second stop (222).
5. The torsion detection device according to claim 3, characterized in that, The detection unit (2) includes a second mounting plate (224), on which a clearance groove (2241) is provided. The first stop (221) and the second stop (222) pass through the clearance groove (2241) along a first direction (X) and are slidably connected to the clearance groove (2241); and / or, The first mounting plate (211) is provided with a clearance hole (2112) extending along the first direction (X), and the clearance hole (2112) is opposite to the first stop (221) and the second stop (222) along the first direction (X).
6. The torsion detection device according to claim 5, characterized in that, The second mounting plate (224) has a notch (2242) located between the two sets of the detection components (22) and opposite to the positioning groove (2111) along the first direction (X).
7. The torsion detection device according to any one of claims 2-5, characterized in that, The clamping assembly (21) includes a clamping member (212) and a second driving member (213); the clamping member (212) has a clamping state that clamps and fixes the first cord segment (11) into the positioning groove (2111) and a releasing state that releases the first cord segment (11); the driving end of the second driving member (213) is hinged to the clamping member (212), and the driving end of the second driving member (213) is adapted to drive the clamping member (212) to swing when it is extended or shortened, so that the clamping member (212) switches between the clamping state and the releasing state.
8. The torsion detection device according to claim 7, characterized in that, The clamping member (212) includes a clamping part (2121) and two gripper parts (2122); the clamping part (2121) is connected to one of the gripper parts (2122); the driving end of the second driving member (213) is hinged to the two gripper parts (2122), and the driving end of the second driving member (213) is adapted to drive the two gripper parts (2122) to move away from or towards each other when it is extended or shortened.
9. The torsion detection device according to claim 8, characterized in that, The first mounting plate (211) has a clamping platform (2113), at least a portion of the positioning groove (2111) is formed on the clamping platform (2113); the clamping part (2121) is located above the clamping platform (2113), and in the clamping state, the clamping part (2121) presses the first cord segment (11) against the positioning groove (2111) of the clamping platform (2113).
10. A testing device, characterized in that, include: The torsion detection device as described in any one of claims 1-9.