LED lamp strip testing device and testing method

Abstract

The application relates to the technical field of LED lamp strip testing, in particular to an LED lamp strip testing device and a testing method, which comprise a testing table, clamps are arranged at the two ends of the testing table, a linear sliding rail is arranged between the two clamps, a winding column is rotatably arranged on the moving seat of the linear sliding rail, the winding column comprises a lead screw, a first limiting disc, a second limiting disc, a plurality of arc-shaped plates and a rubber sleeve, the first limiting disc is rotatably arranged on the vertical surface of the moving seat through a connecting shaft, one end of the lead screw is arranged at the center of the first limiting disc, a sliding sleeve capable of moving along the axis of the lead screw is arranged on the lead screw, limiting blocks are arranged on the two sides of the arc-shaped plate, limiting grooves are correspondingly arranged on the first limiting disc and the second limiting disc, a hand wheel is detachably arranged at the tail end of the lead screw, a locking cap for locking the rotating state of the lead screw is arranged on the second limiting disc, the winding column diameter can be adjusted by driving the arc-shaped plate to fold and unfold through the lead screw, and the rubber sleeve can be matched with different bending radius testing scenes.

Description

Technical Field

[0001] This invention relates to the field of LED light strip testing technology, specifically to an LED light strip testing device and testing method. Background Technology

[0002] LED light strips, due to their advantages such as flexibility, uniform light emission, and easy installation, have been widely used in architectural decoration, home lighting, commercial displays, and many other fields. During the manufacturing process of LED light strips, a winding test is required to simulate the bending conditions under actual use, detecting key performance indicators such as the on / off state of the LEDs and circuit stability at different bending radii to ensure product quality. However, current LED light strip testing devices on the market still have many technical shortcomings, making it difficult to meet the needs of efficient and accurate testing in industrial production. The main problems are concentrated in the following three aspects:

[0003] Firstly, the existing testing devices mostly have a fixed diameter winding column structure, and one set of devices can only meet the testing requirements of one bending radius. If different specifications of light strips need to be tested, it is necessary to frequently replace the special winding column or the entire testing equipment.

[0004] Secondly, while some existing adjustable diameter testing devices can achieve diameter adjustment within a certain range, obvious gaps are easily formed between adjacent support components after adjustment. During the winding of the light strip, the gaps may be embedded, causing circuit damage, or the light beads may go out due to sudden changes in force at the gaps, thus misjudging non-product quality issues as unqualified products.

[0005] Third, the diameter adjustment of existing adjustable diameter testing devices mostly relies on complex mechanical disassembly and reassembly, such as disassembling bolts and adjusting the position of connecting rods. The operation steps are cumbersome, and a single adjustment often takes several minutes or even longer, and requires a high level of professional skills from the operators. Summary of the Invention

[0006] To address the aforementioned issues, an LED light strip testing device and method are provided. The device utilizes a lead screw to drive the expansion and contraction of an arc-shaped plate, enabling adjustable winding diameter. A rubber sleeve, which deforms synchronously with the arc-shaped plate, fills the gaps in the plate and adapts to different bending radii during testing. The interaction between the rubber sleeve and the arc-shaped plate ensures a smooth and continuous surface during strip winding, preventing jamming or uneven stress caused by gaps. The guiding effect of the limiting block and limiting groove enhances testing accuracy. A handwheel and locking cap enable rapid diameter adjustment, and the detachable second limiting plate facilitates rubber sleeve replacement.

[0007] To address the problems of the prior art, the present invention provides an LED light strip testing device, including a testing table, with clamps at both ends of the testing table for fixing the two ends of the LED light strip, and a linear slide rail between the two clamps. A winding column for winding the LED light strip is rotatably mounted on the movable seat of the linear slide rail. The winding column includes a lead screw, a first limiting plate, a second limiting plate, multiple arc plates, and a rubber sleeve.

[0008] The first limiting plate is rotatable on the vertical surface of the movable seat via a connecting shaft;

[0009] One end of the lead screw is located at the center of the first limiting plate. The lead screw is equipped with a sliding sleeve that can move along its axis. The sliding sleeve is hinged with a connecting rod that corresponds to each arc plate. The connecting rod is used to synchronously drive all the arc plates to slide radially along the lead screw to achieve the retraction and extension action.

[0010] The second limiting plate is detachably located at the end of the lead screw away from the first limiting plate. The arc-shaped plates are evenly distributed along the circumference of the lead screw and spliced ​​to form a columnar structure. Limiting blocks are provided on both sides of the arc-shaped plates. The first and second limiting plates are provided with corresponding limiting grooves. The limiting blocks are slidably embedded in the limiting grooves to limit the sliding trajectory of the arc-shaped plates.

[0011] The rubber sleeve is coaxially fitted on the outer surface of the columnar structure formed by splicing arc plates. The two ends of the rubber sleeve abut against the first limiting plate and the second limiting plate respectively, and the rubber sleeve can elastically deform synchronously with the expansion and contraction of the arc plate.

[0012] A handwheel is detachably provided at the end of the lead screw, and a locking cap for locking the rotation state of the lead screw is provided on the second limit plate.

[0013] Preferably, the outer surface of the rubber sleeve is integrally formed with a spiral line extending along the spiral direction, the spiral lines are spaced apart along the axial direction of the rubber sleeve, and a spiral groove for embedding LED light strip is formed between two adjacent spiral lines.

[0014] Preferably, the outer surface of the arc plate has a concave slot along its own axial direction, and the inner ring of the rubber sleeve has a corresponding strip-shaped protrusion that matches the concave slot, so as to restrict the circumferential relative rotation between the rubber sleeve and the arc plate.

[0015] Preferably, a sleeve is coaxially fitted around the lead screw, the lead screw is rotatably inserted into the sleeve, a sliding sleeve is placed inside the sleeve, and a slit is provided on the sleeve to allow the connecting rod to pass through and to allow its movement.

[0016] One end of the sleeve is fixedly connected to the center of the first limiting plate, and the other end passes through the center hole of the second limiting plate and extends outward to form an extension section. The outer wall of the extension section is provided with external threads and a locking cap is threadedly connected. The locking cap can abut against the side of the second limiting plate away from the arc plate to fix the axial position of the second limiting plate.

[0017] An extension sleeve is integrally formed at the center of the locking cap. The locking cap is threaded to the outer wall of the extension sleeve. The center of the locking cap has a through-hole for the end of the lead screw to pass through, and the locking cap can abut against the end of the lead screw to lock the rotation state of the lead screw.

[0018] Preferably, the end of the lead screw is provided with a columnar slot along the axial direction. The slot is divided into an inner slot section and an outer slot section from the inside to the outside. The diameter of the inner slot section is larger than the diameter of the outer slot section and the two are coaxially arranged. A push block is provided in the inner slot section. The diameter of the push block is adapted to the diameter of the inner slot section and can move back and forth along the axis of the inner slot section. A first spring is provided between the push block and the bottom of the inner slot section. When the first spring is in its natural state, the push block is close to the connection between the inner slot section and the outer slot section.

[0019] A plug is fixedly connected to the side of the handwheel facing the lead screw. The plug can be inserted into the slot axially. A positioning pin is radially protruding from the outer wall of the plug near the handwheel. A U-shaped positioning groove is correspondingly opened at the end of the lead screw. One end of the U-shaped positioning groove is open radially along the lead screw to allow the positioning pin to be inserted. The other end of the U-shaped positioning groove is closed circumferentially along the lead screw to limit the circumferential displacement of the positioning pin. When the plug is inserted into the slot, its end can abut against the push block and compress the first spring, so that the positioning pin is tightly fitted into the closed end of the U-shaped positioning groove to prevent the positioning pin from dislodging from the U-shaped positioning groove.

[0020] Preferably, multiple support plates are equidistantly distributed along the screw axis. The support plates are located in the gap between two adjacent arc plates. When the arc plates are not unfolded, the outer surface of the support plate abuts against the inner bottom of the adjacent arc plates. When the arc plates are unfolded to a preset diameter, the support plates are simultaneously inserted into the gap between the adjacent arc plates as the arc plates unfold, and the outer surface of the support plate abuts against the inner wall of the rubber sleeve to support the rubber sleeve.

[0021] The first and second limiting plates are respectively provided with elastic mechanisms. The output end of the elastic mechanism is detachably connected to both ends of the support plate. The elastic mechanism can generate elastic deformation as the arc plate expands and contracts, so as to drive the support plate to move radially along the screw.

[0022] Preferably, the first limiting plate and the second limiting plate are provided with rectangular limiting grooves, the number of rectangular limiting grooves corresponds one-to-one with the support plate and is evenly distributed along the circumference of the first limiting plate and the second limiting plate. A limiting rod extending radially along the lead screw is fixed in the rectangular limiting groove, a connecting block is slidably sleeved on the limiting rod, and a second spring is sleeved on the outside of the limiting rod. One end of the second spring abuts against the bottom of the rectangular limiting groove, and the other end of the second spring abuts against the bottom of the connecting block, so as to push the connecting block to move away from the bottom of the rectangular limiting groove along the limiting rod.

[0023] The support plate has insert plates at both ends, and the connecting block has a socket on the side facing the support plate that is compatible with the insert plates. The insert plates can be inserted into the sockets to form a detachable plug-in connection.

[0024] Preferably, the top two sides of the support plate are respectively provided with a first arc surface, which is a smooth curved surface along the radial extension direction of the support plate; the bottom of the opposite side of the two adjacent arc plates are respectively provided with a second arc surface, the curvature of the second arc surface is adapted to the curvature of the first arc surface, and the first arc surface can slide and cooperate with the second arc surface in the radial direction to form a guide when the arc plate is expanded or contracted.

[0025] Preferably, one of the two clamps has an adjustment plate fixedly installed at its bottom. A linear track is provided on the test platform along the line connecting the two clamps. The bottom of the adjustment plate has a slider adapted to the linear track. The slider is slidably embedded in the linear track so that the adjustment plate can move horizontally along the linear track. A locking rod is threaded through the adjustment plate. The end of the locking rod can abut against the test platform to fix the adjustment plate in a preset position on the linear track.

[0026] A testing method for an LED light strip testing device, applied to an LED light strip testing device, includes the following steps:

[0027] S1. Adjust the distance between the two clamps according to the length of the LED strip to be tested, clamp both ends of the LED strip in the two clamps respectively, so that the middle section of the strip is wrapped around the outer surface of the rubber sleeve of the winding post, and the LED strip is powered on.

[0028] S2. According to the required winding diameter, loosen the locking cap and turn the handwheel. The screw drives the connecting rod to move multiple arc plates to expand and contract synchronously in the radial direction. The rubber sleeve undergoes elastic deformation synchronously with the expansion and contraction of the arc plates to fill the gap between adjacent arc plates. After adjusting to the target diameter, tighten the locking cap to lock the screw.

[0029] S3. Start the linear slide rail. The linear slide rail drives the moving seat to move the winding column back and forth along the linear slide rail. At the same time, the winding column rotates around the connecting shaft, so that the LED light strip on one side of the winding column is wound along the outer surface of the rubber sleeve, and the LED light strip on the other side of the winding column is released.

[0030] S4. During the winding and unwinding process of the LED strip, the on / off status of the LED beads is monitored in real time. If the LED beads go out, the strip is deemed unqualified. If the LED beads light up normally after winding to the preset number of times or length, the strip is deemed qualified.

[0031] S5. After the test is completed, stop the operation, loosen the clamp and remove the light strip. If you need to test light strips of other diameters or specifications, repeat S2 to S4.

[0032] The advantages of this invention compared to the prior art are:

[0033] 1. This invention achieves adjustable winding column diameter by using a lead screw to drive the arc plate to expand and contract. It also uses a rubber sleeve to fill the gaps in the arc plate and adapts to different bending radius test scenarios, eliminating the need for separate equipment for different specifications and improving versatility.

[0034] 2. The cooperation between the rubber sleeve and the arc plate of the present invention ensures that the surface of the light strip is continuous and smooth when it is wound, avoiding jamming or uneven force due to gaps. Combined with the guiding effect of the limiting block and the limiting groove, the accuracy of the test is improved.

[0035] 3. This invention achieves rapid diameter adjustment through handwheel drive and locking cap, and the detachable design of the second limit plate facilitates rubber sleeve replacement, reducing labor costs and downtime. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of an LED light strip testing device.

[0037] Figure 2 This is a schematic diagram of the maximum diameter of the winding column in an LED light strip testing device.

[0038] Figure 3 This is a schematic diagram of the minimum diameter three-dimensional structure of the winding column of an LED light strip testing device.

[0039] Figure 4 This is a three-dimensional structural cross-sectional view of the maximum diameter of the winding column of an LED light strip testing device.

[0040] Figure 5 This is a three-dimensional cross-sectional view of the minimum diameter of the winding column of an LED light strip testing device.

[0041] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0042] Figure 7 This is a cross-sectional view of the minimum diameter of the winding column of an LED light strip testing device.

[0043] Figure 8 This is a cross-sectional view of the maximum diameter of the winding column of an LED light strip testing device.

[0044] Figure 9 A partial decomposition of the winding column of an LED strip testing device Figure 1 .

[0045] Figure 10 yes Figure 9 Enlarged view of section B in the middle.

[0046] Figure 11 A partial decomposition of the winding column of an LED strip testing device Figure 2 .

[0047] Figure 12 This is a cross-sectional view of the winding column.

[0048] Figure 13 This is a schematic diagram of a partial three-dimensional structure of the winding column of an LED light strip testing device.

[0049] The diagram is labeled as follows: 1. Test bench; 2. Fixture; 3. Linear slide rail; 31. Moving seat; 4. Winding column; 41. Lead screw; 411. Sliding sleeve; 4111. Connecting rod; 412. Handwheel; 4121. Insertion post; 4122. Positioning pin; 413. Sleeve; 4131. Extension section; 4132. Locking cap; 4133. Extension sleeve; 414. Slot; 4141. Inner groove section; 4142. Outer groove section; 4143. Push block; 4144. First spring; 415. U-shaped positioning groove; 42. First limiting plate; 421. Limiting groove. ; 422, Elastic mechanism; 423, Rectangular limiting groove; 4231, Limiting rod; 4232, Connecting block; 42321, Insert; 4233, Second spring; 43, Second limiting plate; 431, Locking cap; 44, Arc plate; 441, Limiting block; 442, Concave slot; 443, Second arc surface; 45, Rubber sleeve; 451, Spiral line; 452, Strip-shaped protrusion; 46, Support plate; 461, Insert plate; 462, First arc surface; 47, Connecting shaft; 5, Adjusting plate; 51, Slider; 52, Locking rod; 6, Linear track. Detailed Implementation

[0050] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0051] Reference Figures 1 to 6 As shown: An LED light strip testing device includes a test platform 1. The test platform 1 is provided with clamps 2 at both ends for fixing the two ends of the LED light strip. A linear slide rail 3 is provided between the two clamps 2. A winding column 4 for winding the LED light strip is rotatably arranged on the movable seat 31 of the linear slide rail 3. The winding column 4 includes a lead screw 41, a first limiting plate 42, a second limiting plate 43, multiple arc plates 44 and a rubber sleeve 45.

[0052] The first limiting plate 42 is rotatably mounted on the vertical surface of the movable seat 31 via the connecting shaft 47;

[0053] One end of the lead screw 41 is located at the center of the first limiting plate 42. The lead screw 41 is provided with a sliding sleeve 411 that can move along its axis. The sliding sleeve 411 is hinged with a connecting rod 4111 that corresponds to each arc plate 44. The connecting rod 4111 is used to synchronously drive all the arc plates 44 to slide radially along the lead screw 41 to achieve the retraction and extension action.

[0054] The second limiting plate 43 is detachably located at the end of the lead screw 41 away from the first limiting plate 42. The arc-shaped plates 44 are evenly distributed along the circumference of the lead screw 41 and spliced ​​to form a columnar structure. Limiting blocks 441 are provided on both sides of the arc-shaped plates 44. The first limiting plate 42 and the second limiting plate 43 are respectively provided with limiting grooves 421. The limiting blocks 441 are slidably embedded in the limiting grooves 421 to limit the sliding trajectory of the arc-shaped plates 44.

[0055] The rubber sleeve 45 is coaxially sleeved on the outer surface of the columnar structure formed by splicing the arc plate 44. The two ends of the rubber sleeve 45 abut against the first limiting plate 42 and the second limiting plate 43 respectively, and the rubber sleeve 45 can elastically deform synchronously with the expansion and contraction of the arc plate 44.

[0056] A handwheel 412 is detachably provided at the end of the lead screw 41, and a locking cap 431 for locking the rotation state of the lead screw 41 is provided on the second limit plate 43.

[0057] During testing, first adjust the diameter of the winding column 4, loosen the locking cap 431 on the second limit plate 43 to release the lock on the lead screw 41; rotate the lead screw 41 by handwheel 412. When the lead screw 41 rotates, it drives the sliding sleeve 411 to move. The connecting rod 4111 connected to the sliding sleeve 411 moves in conjunction with the lead screw 41. Since the connecting rod 4111 is connected to each arc plate 44 in a one-to-one correspondence, it can synchronously drive all the arc plates 44 to slide radially along the lead screw 41. If the handwheel 412 is rotated clockwise, the connecting rod 4111 pushes the arc plate 44 to expand radially outward, increasing the diameter of the columnar structure formed by splicing. If the handwheel 412 is rotated counterclockwise, the connecting rod 4111 pulls the arc plate 44 to contract radially inward, decreasing the diameter of the columnar structure. The side limiting block 441 slides along the limiting groove 421 on the first limiting plate 42 and the second limiting plate 43 to ensure that the arc plate 44 moves only radially. When the arc plate 44 retracts, the rubber sleeve 45 is in contact with the outer surface of the arc plate 44 and undergoes elastic deformation synchronously with the arc plate 44. When the arc plate 44 unfolds, the rubber sleeve 45 is pushed outward and extends evenly in the circumference to fill the increased gap after the arc plate 44 unfolds. When the arc plate 44 retracts, the rubber sleeve 45 contracts inward under its own elasticity to fit tightly with the arc plate 44 and fill the small gap left after retraction. After adjusting to the target diameter, tighten the locking cap 431 and lock the screw 41. The position of the arc plate 44 is fixed and the rubber sleeve 45 maintains the current deformation state. The diameter adjustment is completed.

[0058] The rubber sleeve 45 is made of silicone rubber, which is elastic and can be easily stretched by the curved plate 44, while maintaining its shape during winding.

[0059] After the diameter adjustment is completed, clamp both ends of the LED light strip in the clamps 2 at both ends of the test bench 1, and wrap the middle section of the light strip around the surface of the rubber sleeve 45 of the winding column 4.

[0060] The linear slide rail 3 drives the moving seat 31 to reciprocate in the horizontal direction. At the same time, the winding column 4 rotates on the moving seat 31 through the connecting shaft 47. The rotation direction matches the movement direction. The LED light strip on one side of the winding column 4 winds along the outer surface of the rubber sleeve 45 as the winding column 4 moves and rotates. The LED light strip on the other side of the winding column 4 gradually releases the wound LED light strip as the winding column 4 moves and rotates. Thus, the movement of the winding column 4 can realize the bending and release actions of the LED light strip at different locations.

[0061] The LED light strip is connected to the power supply at both ends through clamp 2. It is continuously powered during the winding process, and the light strip is monitored in real time to see if the LED beads go out due to the bending of the winding.

[0062] After the preset number of winding cycles is reached, the moving seat 31 stops moving, the winding column 4 stops rotating, and the clamp 2 is released to remove the LED light strip;

[0063] Since the second limiting plate 43 is detachably mounted on one end of the lead screw 41, and the handwheel 412 is detachably mounted on the end of the lead screw 41, when the rubber sleeve 45 needs to be replaced, the handwheel 412 and the second limiting plate 43 are disassembled in sequence, and the rubber sleeve 45 can be detached from the columnar structure along the axial direction of the arc plate 44. During installation, after the new rubber sleeve 45 is fitted along the axial direction of the arc plate 44, the second limiting plate 43 is tightened again to achieve fixation.

[0064] Reference Figure 11 As shown: The outer surface of the rubber sleeve 45 is integrally formed with a spiral line 451 extending along the spiral direction. The spiral lines 451 are spaced apart along the axial direction of the rubber sleeve 45. A spiral groove for embedding LED light strip is formed between two adjacent spiral lines 451. The width of the spiral groove is adapted to the width of the LED light strip. The depth of the spiral groove is not less than the thickness of the LED light strip, and the height of the spiral line 451 is not greater than the thickness of the LED light strip.

[0065] When the LED strip initially adheres to the rubber sleeve at a 45° angle, the strip naturally embeds itself into the spiral groove. The two side walls of the spiral groove provide radial constraint to the strip, preventing lateral shift before winding.

[0066] When the arc plate 44 expands and contracts to adjust the diameter of the winding column 4, the rubber sleeve 45 elastically deforms synchronously with the arc plate 44, and the spiral line 451 and the spiral groove also undergo adaptive changes.

[0067] Reference Figure 11 As shown: The outer surface of the arc plate 44 is provided with a concave slot 442 along its own axis, and the inner ring of the rubber sleeve 45 is provided with a strip-shaped protrusion 452 that is adapted to the concave slot 442 to restrict the circumferential relative rotation between the rubber sleeve 45 and the arc plate 44.

[0068] When installing the rubber sleeve 45, align the strip-shaped protrusion 452 of its inner ring with the axial concave slot 442 on the outer surface of the arc plate 44, and push it in axially so that the protrusion is fully embedded in the concave slot 442. Both the concave slot 442 and the strip-shaped protrusion 452 are straight and extend axially. The strip-shaped protrusion 452 is limited by the two side walls of the concave slot 442 and cannot rotate around the winding column 4, so as to achieve circumferential relative fixation between the rubber sleeve 45 and the arc plate 44.

[0069] Reference Figure 5 and Figure 6 As shown: A sleeve 413 is coaxially sleeved on the outside of the lead screw 41. The lead screw 41 is rotatably inserted into the sleeve 413. The sliding sleeve 411 is placed inside the sleeve 413. A slit is provided on the sleeve 413 to allow the connecting rod 4111 to pass through and to allow it to move.

[0070] One end of the sleeve 413 is fixedly connected to the center of the first limiting plate 42, and the other end of the sleeve 413 passes through the center hole of the second limiting plate 43 and extends outward to form an extension section 4131. The outer wall of the extension section 4131 is provided with external threads and is threadedly connected with a locking cap 4132. The locking cap 4132 can abut against the side of the second limiting plate 43 away from the arc plate 44 to fix the axial position of the second limiting plate 43.

[0071] An extension sleeve 4133 is integrally formed at the center of the locking cap 4132. The locking cap 431 is threaded to the outer wall of the extension sleeve 4133. The center of the locking cap 431 has a through-hole for the end of the lead screw 41 to pass through, and the locking cap 431 can abut against the end of the lead screw 41 to lock the rotation state of the lead screw 41.

[0072] The external thread of the extension section 4131 of the sleeve 413 is engaged with the locking cap 4132. After the second limiting plate 43 is sleeved on the extension section 4131 of the sleeve 413, the locking cap 4132 is tightened to make it abut against the second limiting plate 43. The second limiting plate 43 is fixed in the preset position by the axial clamping force, ensuring that the second limiting plate 43 is parallel to the first limiting plate 42 and the distance between them is stable.

[0073] The extension sleeve 4133 of the locking cap 4132 provides an installation reference for the locking cap 431. After the lead screw 41 is adjusted to the target diameter, the locking cap 431 is tightened to abut against the end of the lead screw 41, locking the lead screw 41 and preventing it from rotating accidentally.

[0074] Reference Figure 6 , Figure 9 and Figure 10As shown: The end of the lead screw 41 is provided with a columnar slot 414 along the axial direction. The slot 414 is divided into an inner slot section 4141 and an outer slot section 4142 from the inside to the outside. The diameter of the inner slot section 4141 is larger than the diameter of the outer slot section 4142 and the two are coaxially arranged. A push block 4143 is provided in the inner slot section 4141. The diameter of the push block 4143 is adapted to the diameter of the inner slot section 4141 and can reciprocate along the axis of the inner slot section 4141. A first spring 4144 is provided between the push block 4143 and the bottom of the slot of the inner slot section 4141. When the first spring 4144 is in the natural state, the push block 4143 is close to the connection between the inner slot section 4141 and the outer slot section 4142.

[0075] A plug pin 4121 is fixedly connected to the side of the handwheel 412 facing the lead screw 41. The plug pin 4121 can be inserted into the slot 414 axially. A positioning pin 4122 is radially protruding from the outer wall of the plug pin 4121 near the handwheel 412. A U-shaped positioning groove 415 is correspondingly opened at the end of the lead screw 41. One end of the U-shaped positioning groove 415 is radially open along the lead screw 41 to allow the positioning pin 4122 to be inserted. The other end of the U-shaped positioning groove 415 is circumferentially closed along the lead screw 41 to limit the circumferential displacement of the positioning pin 4122. When the plug pin 4121 is inserted into the slot 414, its end can abut against the push block 4143 and compress the first spring 4144, so that the positioning pin 4122 is tightly fitted into the closed end of the U-shaped positioning groove 415 to prevent the positioning pin 4122 from dislodging from the U-shaped positioning groove 415.

[0076] When it is necessary to install the handwheel 412 to adjust the diameter, align the insertion pin 4121 of the handwheel 412 with the slot 414 at the end of the lead screw 41, so that the insertion pin 4121 is inserted axially into the outer groove section 4142 and into the inner groove section 4141; at this time, the positioning pin 4122 on the insertion pin 4121 is aligned with the open end of the U-shaped positioning groove 415, and slides into the positioning groove as the insertion pin 4121 is inserted. The end of the insertion pin 4121 abuts against the push block 4143 of the inner groove section 4141, and the handwheel 412 is continued to be pushed to make the first spring 41 44 is compressed; at the same time, rotating the handwheel 412 drives the positioning pin 4122 to slide along the circumferential closed end of the U-shaped positioning groove 415 until the positioning pin 4122 is inserted into the end of the closed end. The rebound force of the first spring 4144 acts on the push block 4143, and the push block 4143 pushes the insertion post 4121 in the opposite direction, so that the positioning pin 4122 fits tightly against the side wall of the closed end of the U-shaped positioning groove 415, forming a circumferential lock. At this time, the handwheel 412 is rigidly connected to the lead screw 41, and rotating the handwheel 412 can synchronously drive the lead screw 41 to rotate.

[0077] When it is necessary to disassemble the handwheel 412, press the handwheel 412 axially to further compress the first spring 4144, and release the contact pressure between the positioning pin 4122 and the closed end of the U-shaped positioning groove 415. Rotate the handwheel 412 in the opposite direction to make the positioning pin 4122 slide along the U-shaped positioning groove 415 to the open end. At this time, the positioning pin 4122 can be radially disengaged from the positioning groove. Release the handwheel 412, and the rebound force of the first spring 4144 pushes the insertion pin 4121 to pop out axially along the slot 414, thus completing the disassembly of the handwheel 412.

[0078] Reference Figure 7 and Figure 8 As shown: Multiple support plates 46 are equidistantly distributed along the axial direction of the lead screw 41. The support plates 46 are located in the gap between two adjacent arc plates 44. When the arc plates 44 are not unfolded, the outer surface of the support plate 46 abuts against the inner bottom of the adjacent arc plates 44. When the arc plates 44 are unfolded to a preset diameter, the support plates 46 are simultaneously inserted into the gap between the adjacent arc plates 44 as the arc plates 44 are unfolded, and the outer surface of the support plate 46 abuts against the inner wall of the rubber sleeve 45 to support the rubber sleeve 45.

[0079] The first limiting plate 42 and the second limiting plate 43 are respectively provided with elastic mechanisms 422. The output end of the elastic mechanism 422 is detachably connected to both ends of the support plate 46. The elastic mechanism 422 can generate elastic deformation as the arc plate 44 expands and contracts, so as to drive the support plate 46 to move radially along the lead screw 41.

[0080] When the arc plate 44 is in the retracted and unexpanded state, the gap between adjacent arc plates 44 is small. At this time, under the initial elastic force of the elastic mechanism 422, the outer surface of the support plate 46 abuts against the bottom of the inner side of the arc plate 44, without interfering with the fit between the arc plate 44 and the rubber sleeve 45. The elastic mechanism 422 is in the pre-tightened state, providing driving force for the support plate 46 to unfold with the arc plate 44.

[0081] When the arc plate 44 is driven to unfold to the preset diameter by the connecting rod 4111, the gap between adjacent arc plates 44 expands as the diameter increases. At this time, the support plate 46 moves synchronously with the adjacent arc plate 44 through the elastic mechanism 422. As the adjacent arc plates 44 gradually unfold, the support plate 46 gradually enters the expanded gap between the adjacent arc plates 44. Its outer surface changes from abutting the inner side of the arc plate 44 to abutting the inner wall of the rubber sleeve 45, forming a rigid support for the rubber sleeve 45 and preventing the rubber sleeve 45 from sinking inward due to the excessive gap.

[0082] When the arc plate 44 retracts, the elastic mechanism 422 drives the support plate 46 to move inward synchronously under its own elastic force. The support plate 46 gradually exits the gap and re-abuts against the bottom inner side of the arc plate 44, returning to the initial standby state.

[0083] Reference Figure 7 , Figure 8 and Figure 12 , Figure 13 The first limiting plate 42 and the second limiting plate 43 are respectively provided with rectangular limiting grooves 423. The number of rectangular limiting grooves 423 corresponds one-to-one with the support plate 46 and is evenly distributed around the first limiting plate 42 and the second limiting plate 43. A limiting rod 4231 extending radially along the lead screw 41 is fixedly provided in the rectangular limiting groove 423. A connecting block 4232 is slidably sleeved on the limiting rod 4231. A second spring 4233 is sleeved on the outside of the limiting rod 4231. One end of the second spring 4233 abuts against the bottom of the rectangular limiting groove 423, and the other end of the second spring 4233 abuts against the bottom of the connecting block 4232, so as to push the connecting block 4232 to move away from the bottom of the rectangular limiting groove 423 along the limiting rod 4231.

[0084] The support plate 46 has insert plates 461 at both ends. The connecting block 4232 has a socket 42321 on the side facing the support plate 46 that is compatible with the insert plate 461. The insert plate 461 can be inserted into the socket 42321 to form a detachable plug-in connection.

[0085] When the arc plate 44 is in the retracted state, the gap between adjacent arc plates 44 is small, and the second spring 4233 is in a natural or slightly compressed state. Its thrust pushes the connecting block 4232 to move radially outward along the limiting rod 4231. However, at this time, the support plate 46 cannot move outward due to the obstruction of the arc plate 44. The insertion plate 461 and the insertion port 42321 of the connecting block 4232 maintain a plug-in fit. The connecting block 4232 is reverse-limited by the support plate 46. The second spring 4233 stores a small amount of elastic potential energy. The limiting rod 4231 restricts the connecting block 4232 to slide only radially, ensuring the alignment of the connecting block 4232 and the support plate 46.

[0086] As the arc plate 44 expands radially outward, the gap between adjacent arc plates 44 gradually widens, the blocking force of the arc plate 44 on the support plate 46 disappears, the second spring 4233 releases elastic potential energy, and pushes the connecting block 4232 to slide radially outward along the limiting rod 4231. The connecting block 4232 engages with the pin through the insertion of the socket 42321, which drives the support plate 46 to move radially outward in sync, so that the support plate 46 gradually enters the gap of the arc plate 44, and finally its outer surface abuts against the inner wall of the rubber sleeve 45. The guiding effect of the limiting rod 4231 ensures that the support plate 46 moves only radially, avoiding interference with the arc plate 44 or the rubber sleeve 45 due to tilting.

[0087] As the arc plate 44 retracts radially inward, the gap between adjacent arc plates 44 narrows, and the inner side of the arc plate 44 gradually contacts the outer surface of the support plate 46 and generates an inward thrust. This thrust overcomes the elastic force of the second spring 4233 and pushes the support plate 46 to move radially inward. The support plate 46 drives the connecting block 4232 to slide inward along the limiting rod 4231, compressing the second spring 4233 until the support plate 46 returns to its initial position.

[0088] When the support plate 46 needs to be replaced or maintained, the support plate 46 can be pulled out axially to disengage the pin from the socket 42321 of the connecting block 4232, thus achieving quick disassembly; during installation, simply align the pin with the socket 42321 and insert it.

[0089] Reference Figure 8 As shown: The top two sides of the support plate 46 are respectively provided with a first arc surface 462, and the first arc surface 462 is a smooth curved surface along the radial extension direction of the support plate 46; the bottom of the opposite side of the two adjacent arc plates 44 is provided with a second arc surface 443, the curvature of the second arc surface 443 is adapted to the curvature of the first arc surface 462, and the first arc surface 462 can slide and cooperate with the second arc surface 443 in the radial direction to form a guide when the arc plate 44 is expanded or contracted.

[0090] When the arc plate 44 unfolds radially outward, the gap between adjacent arc plates 44 widens, and the support plate 46 moves outward synchronously under the drive of the second spring 4233. The second arc surface 443 of the arc plate 44 and the first arc surface 462 of the support plate 46 slide relative to each other radially. The smooth curved surfaces of the first arc surface 462 and the second arc surface 443 provide guidance for the relative movement of the two, ensuring that the support plate 46 moves along the normal direction of the inner side of the arc plate 44.

[0091] When the arc plate 44 retracts inward, the second arc surface 443 on its inner side gradually moves closer to the support plate 46. At this time, the first arc surface 462 and the second arc surface 443 form a sliding fit again and form a guiding thrust, forcing the support plate 46 to overcome the spring force and move inward synchronously.

[0092] Reference Figure 1 As shown: One of the two clamps 2 has an adjusting plate 5 fixedly installed at its bottom. A linear track 6 is provided on the test platform 1 along the line connecting the two clamps 2. The bottom of the adjusting plate 5 is provided with a slider 51 that is adapted to the linear track 6. The slider 51 is slidably embedded in the linear track 6 so that the adjusting plate 5 can move horizontally along the linear track 6. A locking rod 52 is threaded through the adjusting plate 5. The end of the locking rod 52 can abut against the test platform 1 to fix the adjusting plate 5 in the preset position of the linear track 6.

[0093] When testing LED light strips of different lengths, release the locking lever 52 and push the adjusting plate 5 to slide along the linear track 6. The adjusting plate 5 moves smoothly along the linear track 6 via the bottom slider 51, causing the clamps 2 on it to move synchronously. This causes the distance between the two clamps 2 to increase or decrease as the position of the adjusting plate 5 changes. During the movement, the cooperation between the linear track 6 and the slider 51 ensures that the clamps 2 always move along the line connecting the two clamps 2, ensuring that the clamps 2 are aligned with the axis of the winding column 4, thus preventing the light strip from becoming skewed after installation. When the distance between the two clamps 2 is adjusted to match the length of the light strip to be tested, rotate the locking lever 52 clockwise so that its end is in close contact with the test table 1.

[0094] A testing method for an LED light strip testing device, applied to an LED light strip testing device, includes the following steps:

[0095] S1. According to the length of the LED light strip to be tested, adjust the distance between the two clamps 2, clamp the two ends of the LED light strip in the two clamps 2 respectively, so that the middle section of the light strip is wrapped around the outer surface of the rubber sleeve 45 of the winding post 4, and the LED light strip is powered on.

[0096] S2. According to the required winding diameter, loosen the locking cap 431 and turn the handwheel 412. Drive the connecting rod 4111 through the screw 41 to drive multiple arc plates 44 to expand and contract synchronously in the radial direction. The rubber sleeve 45 elastically deforms synchronously with the expansion and contraction of the arc plates 44 to fill the gap between adjacent arc plates 44. After adjusting to the target diameter, tighten the locking cap 431 to lock the screw 41.

[0097] S3. Start the linear slide rail 3. The linear slide rail 3 drives the moving seat 31 to move the winding column 4 back and forth along the linear slide rail 3. At the same time, the winding column 4 rotates around the connecting shaft 47, so that the LED light strip on one side of the winding column 4 is wound along the outer surface of the rubber sleeve 45, and the LED light strip on the other side is released.

[0098] S4. During the winding and unwinding process of the LED strip, the on / off status of the LED beads is monitored in real time. If the LED beads go out, the strip is deemed unqualified. If the LED beads light up normally after winding to the preset number of times or length, the strip is deemed qualified.

[0099] S5. After the test is completed, stop the operation, loosen clamp 2 and take out the light strip. If you need to test light strips of other diameters or specifications, repeat S2 to S4.

[0100] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An LED light strip testing device, comprising a test platform (1), with clamps (2) for fixing the two ends of an LED light strip at both ends of the test platform (1), and a linear slide rail (3) between the two clamps (2), wherein a winding post (4) for winding the LED light strip is rotatably mounted on the movable seat (31) of the linear slide rail (3), characterized in that, The winding column (4) includes a lead screw (41), a first limiting plate (42), a second limiting plate (43), multiple arc plates (44) and a rubber sleeve (45); The first limiting plate (42) is rotatably mounted on the vertical surface of the movable seat (31) via the connecting shaft (47); One end of the lead screw (41) is located at the center of the first limiting plate (42). The lead screw (41) is provided with a sliding sleeve (411) that can move along its axis. The sliding sleeve (411) is hinged with a connecting rod (4111) that corresponds to each arc plate (44). The connecting rod (4111) is used to synchronously drive all arc plates (44) to slide radially along the lead screw (41) to realize the retraction and extension action. The second limiting plate (43) is detachably provided at the end of the lead screw (41) away from the first limiting plate (42). The arc plate (44) is equidistantly distributed along the circumference of the lead screw (41) and spliced ​​to form a columnar structure. Limiting blocks (441) are provided on both sides of the arc plate (44). The first limiting plate (42) and the second limiting plate (43) are respectively provided with limiting grooves (421). The limiting blocks (441) are slidably embedded in the limiting grooves (421) to limit the sliding trajectory of the arc plate (44). The rubber sleeve (45) is coaxially sleeved on the outer surface of the columnar structure formed by splicing the arc plate (44). The two ends of the rubber sleeve (45) abut against the first limiting plate (42) and the second limiting plate (43) respectively. The rubber sleeve (45) can elastically deform synchronously with the expansion and contraction of the arc plate (44). A handwheel (412) is detachably provided at the end of the lead screw (41), and a locking cap (431) for locking the rotation state of the lead screw (41) is provided on the second limit plate (43).

2. The LED strip testing device according to claim 1, characterized in that, The outer surface of the rubber sleeve (45) is integrally formed with a spiral line (451) extending along the spiral. The spiral lines (451) are spaced apart along the axial direction of the rubber sleeve (45), and a spiral groove for embedding LED light strip is formed between two adjacent spiral lines (451).

3. The LED strip testing device according to claim 2, characterized in that, The outer surface of the arc plate (44) is provided with a concave slot (442) along its own axis, and the inner ring of the rubber sleeve (45) is provided with a strip-shaped protrusion (452) that matches the concave slot (442) to restrict the circumferential relative rotation between the rubber sleeve (45) and the arc plate (44).

4. The LED strip testing device according to claim 3, characterized in that, The lead screw (41) is coaxially fitted with a sleeve (413), the lead screw (41) is rotatably inserted into the sleeve (413), the sliding sleeve (411) is placed inside the sleeve (413), and the sleeve (413) has a cut for the connecting rod (4111) to pass through and avoid its movement. One end of the sleeve (413) is fixedly connected to the center of the first limiting plate (42), and the other end of the sleeve (413) passes through the center hole of the second limiting plate (43) and extends outward to form an extension section (4131). The outer wall of the extension section (4131) is provided with external threads and is threadedly connected with a locking cap (4132). The locking cap (4132) can abut against the side of the second limiting plate (43) away from the arc plate (44) to fix the axial position of the second limiting plate (43). An extension sleeve (4133) is integrally formed at the center of the locking cap (4132). The locking cap (431) is threaded to the outer wall of the extension sleeve (4133). The center of the locking cap (431) has a through hole for the end of the lead screw (41) to pass through, and the locking cap (431) can abut against the end of the lead screw (41) to lock the rotation state of the lead screw (41).

5. The LED strip testing device according to claim 1, characterized in that, The end of the lead screw (41) is provided with a columnar slot (414) along the axial direction. The slot (414) is divided into an inner groove section (4141) and an outer groove section (4142) from the inside to the outside. The diameter of the inner groove section (4141) is larger than the diameter of the outer groove section (4142) and the two are coaxially arranged. A push block (4143) is provided in the inner groove section (4141). The diameter of the push block (4143) is adapted to the diameter of the inner groove section (4141) and can move back and forth along the axis of the inner groove section (4141). A first spring (4144) is provided between the push block (4143) and the bottom of the groove of the inner groove section (4141). When the first spring (4144) is in the natural state, the push block (4143) is close to the connection between the inner groove section (4141) and the outer groove section (4142). A plug pin (4121) is fixedly connected to the side of the handwheel (412) facing the lead screw (41). The plug pin (4121) can be inserted into the slot (414) axially. A positioning pin (4122) is radially protruding from the outer wall of the plug pin (4121) near the handwheel (412). A U-shaped positioning groove (415) is correspondingly opened at the end of the lead screw (41). One end of the U-shaped positioning groove (415) is radially open along the lead screw (41) to allow the positioning pin (4122) to be inserted. 2) Insertion: The other end of the U-shaped positioning groove (415) is closed around the screw (41) to limit the circumferential displacement of the positioning pin (4122). When the plug pin (4121) is inserted into the slot (414), its end can abut against the push block (4143) and compress the first spring (4144), so that the positioning pin (4122) is tightly fitted into the closed end of the U-shaped positioning groove (415) to prevent the positioning pin (4122) from dislodging from the U-shaped positioning groove (415).

6. The LED strip testing device according to claim 1, characterized in that, Multiple support plates (46) are evenly distributed along the axial direction of the lead screw (41). The support plates (46) are located in the gap between two adjacent arc plates (44). When the arc plate (44) is not unfolded, the outer surface of the support plate (46) abuts against the inner bottom of the adjacent arc plate (44). When the arc plate (44) is unfolded to the preset diameter, the support plate (46) enters the gap between the adjacent arc plates (44) at the same time as the arc plate (44) unfolds. The outer surface of the support plate (46) abuts against the inner wall of the rubber sleeve (45) to support the rubber sleeve (45). The first limiting plate (42) and the second limiting plate (43) are respectively provided with elastic mechanisms (422). The output end of the elastic mechanism (422) is detachably connected to both ends of the support plate (46). The elastic mechanism (422) can generate elastic deformation as the arc plate (44) expands and contracts, so as to drive the support plate (46) to move radially along the screw (41).

7. The LED strip testing device according to claim 6, characterized in that, Rectangular limiting grooves (423) are correspondingly provided on the first limiting plate (42) and the second limiting plate (43). The number of rectangular limiting grooves (423) corresponds one-to-one with the support plate (46) and is evenly distributed around the first limiting plate (42) and the second limiting plate (43). A limiting rod (4231) extending radially along the lead screw (41) is fixedly provided in the rectangular limiting groove (423). A connecting block (4232) is slidably sleeved on the limiting rod (4231). A second spring (4233) is sleeved on the outside of the limiting rod (4231). One end of the second spring (4233) abuts against the bottom of the rectangular limiting groove (423), and the other end of the second spring (4233) abuts against the bottom of the connecting block (4232) to push the connecting block (4232) to move away from the bottom of the rectangular limiting groove (423) along the limiting rod (4231). The support plate (46) has insert plates (461) at both ends. The connecting block (4232) has a socket (42321) on the side facing the support plate (46) that is compatible with the insert plate (461). The insert plate (461) can be inserted into the socket (42321) to form a detachable plug-in fit.

8. The LED strip testing device according to claim 7, characterized in that, The top two sides of the support plate (46) are respectively provided with a first arc surface (462), and the first arc surface (462) is a smooth curved surface along the radial extension direction of the support plate (46); the bottom of the opposite side of the two adjacent arc plates (44) is provided with a second arc surface (443), the curvature of the second arc surface (443) is adapted to the curvature of the first arc surface (462), and the first arc surface (462) can slide and cooperate with the second arc surface (443) in the radial direction to form a guide when the arc plate (44) is expanded or contracted.

9. The LED strip testing device according to claim 1, characterized in that, An adjustment plate (5) is fixedly provided at the bottom of one of the two clamps (2). A linear track (6) is provided on the test table (1) along the line connecting the two clamps (2). A slider (51) adapted to the linear track (6) is provided at the bottom of the adjustment plate (5). The slider (51) is slidably embedded in the linear track (6) so that the adjustment plate (5) can move horizontally along the linear track (6). A locking rod (52) is threaded through the adjustment plate (5). The end of the locking rod (52) can abut against the test table (1) to fix the adjustment plate (5) in the preset position of the linear track (6).

10. A testing method for an LED strip testing device, applied to the LED strip testing device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. According to the length of the LED strip to be tested, adjust the distance between the two clamps (2), clamp the two ends of the LED strip in the two clamps (2) respectively, so that the middle section of the strip is wrapped around the outer surface of the rubber sleeve (45) of the winding column (4), and the LED strip is powered on. S2. According to the required winding diameter, loosen the locking cap (431) and turn the handwheel (412). Drive the connecting rod (4111) through the screw (41) to drive multiple arc plates (44) to expand and contract synchronously in the radial direction. The rubber sleeve (45) undergoes elastic deformation synchronously with the expansion and contraction of the arc plates (44) to fill the gap between adjacent arc plates (44). After adjusting to the target diameter, tighten the locking cap (431) to lock the screw (41). S3. Start the linear slide rail (3). The linear slide rail (3) drives the moving seat (31) to move the winding column (4) back and forth along the linear slide rail (3). At the same time, the winding column (4) rotates around the connecting shaft (47), so that the LED light strip on one side of the winding column (4) is wound along the outer surface of the rubber sleeve (45), and the LED light strip on the other side of the winding column (4) is released. S4. During the winding and unwinding process of the LED strip, the on / off status of the LED beads is monitored in real time. If the LED beads go out, the strip is deemed unqualified. If the LED beads light up normally after winding to the preset number of times or length, the strip is deemed qualified. S5. After the test is completed, stop the operation, loosen the clamp (2) and take out the light strip. If you need to test light strips of other diameters or specifications, repeat S2 to S4.

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