Strip straightness testing device

Abstract

A strip straightness testing device comprises a rack, an adjusting mechanism, a plurality of roller mechanisms and a testing mechanism. The testing mechanism comprises a guide wheel assembly and a testing assembly. The guide wheel assembly comprises two fixed guide wheels and two abutting guide wheels. Each abutting guide wheel comprises an abutting wheel and a plurality of first elastic pieces. The test assembly comprises a test guide wheel and a test pen. The test guide wheel comprises a test wheel and a plurality of second elastic pieces. When a belt material is transported, one side of the two side edges is fixed by the fixed guide wheel, the other side of the two side edges is always abutted against the abutting wheel pushed by the first elastic piece, at the moment, the test wheel is pushed by the second elastic piece to abut against the belt material, and the extension or compression amount of the test wheel is collected through the test pen so as to detect the straightness of the belt material.

Description

Technical Field

[0001] This utility model belongs to the field of material testing technology, and in particular to a material straightness testing device. Background Technology

[0002] Strip material, a type of sheet metal with a relatively small width compared to its length, is widely used in mechanical manufacturing. During forging, trimming, and other manufacturing processes, strip material inevitably deforms, necessitating the inspection of its form and position tolerances. Straightness, as a crucial factor affecting the machining of strip blanks, must be strictly and effectively measured and controlled to prevent the outflow of substandard strip material and ensure the accuracy of subsequent machining. Current inspection methods involve sampling a few sections of the strip and measuring the distance between its two sides using measuring equipment, which is inefficient. Furthermore, due to the considerable length of the strip, it is difficult to accurately compare straightness over a large distance.

[0003] For example, in the utility model patent with announcement number CN217900744U, although the guide rail is moved by a supporting bottom wheel and the curvature at both ends of the guide rail is detected by a straightness detection wheel with elastic support and distance sensor, the guide rail cannot be completely stable during movement. It may deflect laterally when the supporting bottom wheel is conveying the rail, which will affect the test results and the accuracy of the test. Moreover, the straightness detection wheel can only measure a part of the side of the guide rail, and does not measure all the contact surfaces of the side of the guide rail, so the measured data is not entirely convincing. Summary of the Invention

[0004] In view of this, the present invention provides a material straightness testing device to solve the above problems.

[0005] A material straightness testing device includes a frame, an adjustment mechanism mounted on the frame, and a testing mechanism connected to the adjustment mechanism. The adjustment mechanism includes two adjustment plates. The testing mechanism includes two sets of guide wheel assemblies respectively mounted on the two adjustment plates, and a testing assembly mounted on the adjustment plates and located between the two sets of guide wheel assemblies. The two sets of guide wheel assemblies have identical structures. Each set of guide wheel assemblies includes a fixed guide wheel assembly mounted on one of the adjustment plates, and a counter-guide wheel assembly mounted on the other adjustment plate and opposite to the fixed guide wheel assembly. The fixed guide wheel assembly includes a fixed bracket mounted on the adjustment plate and a fixed wheel mounted on the fixed bracket. The counter-guide wheel assembly includes a counter-plate fixedly mounted on the adjustment plate, at least one first guide member fixedly mounted on the counter-plate, a counter-guide wheel frame slidably mounted on the first guide member, at least one first elastic member sleeved on the first guide member and clamped between the counter-guide wheel frame and the counter-plate, and a counter-wheel rotatably mounted on the counter-guide wheel frame. The testing assembly includes a mounting bracket fixed to the adjusting plate and located between the two fixed guide wheel assemblies, a test guide wheel disposed on the mounting bracket, and a measuring pen disposed on the mounting bracket and located between the test guide wheel and the mounting bracket. The mounting bracket includes a mounting plate fixed to the adjusting plate, at least one second guide member fixed to the mounting plate, a test guide wheel frame slidably disposed on the second guide member, at least one second elastic member sleeved on the second guide member and clamped between the mounting plate and the test guide wheel frame, and a guide rail fixed to the adjusting plate and connected to the test guide wheel frame. The elastic coefficient of the second elastic member is less than that of the first elastic member. During transport, one side of the strip is fixed by the fixed wheel, and the other side is constantly abutted by the abutting wheel pushed by the first elastic member. The test guide wheel located on the same side as the fixed wheel is pushed by the second elastic member to abut against the strip, and the elongation or compression of the test guide wheel is measured by the measuring pen to detect the straightness of the strip.

[0006] Furthermore, the frame includes a plate, a plurality of buffer assemblies disposed on the plate, and a follower assembly connected to the plurality of buffer assemblies. Each buffer assembly includes a fixed plate fixedly disposed on the plate, a guide rod inserted into the fixed plate, and a buffer elastic member sleeved on the guide rod. The follower assembly includes at least two first slide rails disposed on the plate, and a follower plate disposed on the first slide rails. Each first slide rail also includes two first sliders disposed on the first slide rails.

[0007] Furthermore, the bottom surface of the follower plate is fixed on the first slider, and the side surface is connected to the fixed plate via the guide rod.

[0008] Furthermore, the adjustment mechanism includes a first adjustment component disposed on the plate body and a second adjustment component disposed on the first adjustment component. The first adjustment component includes at least two second slide rails disposed on the follower plate, and the two adjustment plates are mounted on the second slide rails.

[0009] Furthermore, the second adjustment assembly includes at least three fixed seats disposed on the follower plate, two fixed blocks respectively connected to the adjustment plate, two movable rods passing through the fixed seats and the fixed blocks, and two rotary handwheels respectively connected to the two movable rods.

[0010] Furthermore, the fixed block and the follower plate are spaced apart, and the fixed block is fixedly connected to the movable rod.

[0011] Furthermore, the material straightness testing device also includes multiple roller mechanisms connected to the adjustment mechanism and used to ensure that the material is in a horizontal state during conveying. Each roller mechanism includes two roller supports spaced apart and fixedly mounted on the follower plate, a lower roller mounted on the roller support, two adjustment components respectively mounted on the roller support, and an upper roller mounted on the adjustment component and opposite to the lower roller. The roller support is provided with a receiving groove for accommodating the adjustment component and a guide groove provided on two opposite sidewalls of the receiving groove.

[0012] Furthermore, each of the adjustment components includes two guide rods fixed to the bottom of the receiving groove, an adjustment block slidably inserted on the guide rods, two abutting elastic members respectively sleeved on the guide rods, and an adjustment wheel mounted on the receiving groove for adjusting the adjustment block.

[0013] Furthermore, the guide rail includes a linear guide rail disposed on the adjustment plate and a fixing block disposed on the linear guide rail. The guide rail is used to ensure that the test guide wheel frame moves along a straight line, and the fixing block is fixedly connected to the test guide wheel frame.

[0014] Furthermore, the test pen includes a test pen body connected to the test guide wheel, a test plate connected to the test guide wheel frame and abutting against the test pen body, and a plurality of test pen protection plates disposed around the test pen body for protecting the test pen body.

[0015] Compared with the prior art, the tape straightness testing device provided by this utility model, by setting the guide wheel assembly and the testing assembly on the adjustment plate assembly, can measure the curvature of the tape side when the roller mechanism is conveying the tape. Specifically, when the tape is conveyed by the roller mechanism, one side of the tape is abutted by the two fixed wheels, and the other side is elastically abutted by the abutting wheel pushed by the first elastic element. At this time, the testing wheel located between the two fixed wheels is elastically pushed by the second elastic element and adheres to the tape as the tape moves. The curvature of the tape side is judged by the elongation or contraction of the measuring pen that is constantly abutting the testing wheel, thereby detecting the straightness of the tape. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a strip straightness testing device provided by this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the strip straightness testing device from another direction.

[0018] Figure 3 for Figure 1 A schematic diagram of the adjustment mechanism of the strip straightness testing device.

[0019] Figure 4 for Figure 1 A schematic diagram of the roller mechanism in the strip straightness testing device.

[0020] Figure 5 for Figure 1 A schematic diagram of the testing mechanism of the strip straightness testing device.

[0021] Figure 6 for Figure 5 A schematic diagram of the structure of the testing components of the testing organization. Detailed Implementation

[0022] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0023] like Figures 1 to 6The diagram shown is a structural schematic of a strip straightness testing device provided by this utility model. The strip straightness testing device includes a frame 10, an adjustment mechanism 20 mounted on the frame 10, multiple roller mechanisms 30 connected to the adjustment mechanism 20, and a testing mechanism 40 connected to the adjustment mechanism 20 and used for testing the straightness of the strip. The strip straightness testing device also includes other functional modules, such as electrical connection components and assembly components connected to the strip straightness testing device, which should be known to those skilled in the art and will not be described in detail here.

[0024] The frame 10 is used to support and carry the aforementioned functional modules. The support 10 can be a rectangular support. Preferably, the support 10 is made of metal materials such as steel, thereby having better load-bearing capacity. The support 10 includes a plate 11 for supporting the aforementioned functional modules, a plurality of buffer components 12 disposed on the plate 11, and follower components 13 connected to the plurality of buffer components 12.

[0025] The plate 11 can be a rectangular plate. It is easy to see that the plate 11 also has multiple mounting holes for connecting with the adjustment mechanism 20 and the testing mechanism 40.

[0026] Each of the buffer components 12 includes a fixed plate 121 fixedly mounted on the plate 11, a guide rod 122 inserted into the fixed plate 121, and a buffer elastic element 123 sleeved on the guide rod 122. The buffer component 12 is used to cooperate with the follower component 13 and to ensure that the follower component 13 is centered in a timely manner. The number of buffer components 12 can be set according to actual needs. In this embodiment, there are four buffer components 12, which are evenly distributed on both sides of the follower component 13.

[0027] The fixing plate 121 is fixedly connected to the plate body 11. The fixing plate 121 can be fixedly connected to the plate body 11 by means of bolts. It is easy to see that the fixing plate 121 also has through holes for the guide rod 122 to pass through.

[0028] One end of the guide rod 122 is inserted and fixed on the fixed plate 121, and the other end is inserted on the follower plate 132 described below. It is used to guide the extension and retraction direction of the buffer elastic member 123, so that the buffer elastic member 123 only moves along the guide rod 121.

[0029] The buffer elastic element 123 can be a spring. The buffer elastic element 123 is used to absorb the vibration generated by the operation of the equipment when the material undergoes elastic deformation during the conveying process.

[0030] The follower assembly 13 includes at least two first slide rails 131 disposed on the plate 11, and a follower plate 132 disposed on the first slide rails 131.

[0031] The first slide rail 131 is a single slide rail, and the slide rail itself should be well known to those skilled in the art, so it will not be described in detail here. The number of the first slide rails 131 can be set according to actual needs. In this embodiment, the number of the first slide rails 131 is two.

[0032] Each of the first slide rails 131 further includes two first sliders 1311 disposed on the first slide rail 131. The first sliders 1311 can slide freely on the first slide rail 131.

[0033] The follower plate 132 is fixedly connected to the first slider 1311. The connection method between the follower plate 132 and the first slider 1311 can be varied and is not specifically limited here. In this embodiment, the connection method between the follower plate 132 and the first slider 1311 is a bolt connection.

[0034] The bottom surface of the follower plate 132 is fixed to the first slider 1311, and its side is connected to the fixed plate 121 via the guide rod 122. The buffer elastic element 123 is clamped between the follower plate 132 and the fixed plate 121 to provide buffering and clamping. It is easy to see that the follower plate 132 also has a groove for accommodating the guide rod 122, and the groove depth is greater than the length of the guide rod 122, to provide reserved space for the movement of the follower plate 132. Specifically, the two sides of the follower plate 132 are elastically abutted by four buffer elastic elements 123. Due to the material being transported, its trajectory cannot be a standard straight line. At this time, the buffer elastic elements 123 can move with the left and right swing of the material, thereby driving the follower plate 132 to move, so that the testing mechanism 40 fits the material, thereby improving the measurement accuracy of the testing mechanism 40.

[0035] like Figure 3 As shown, the adjustment mechanism 20 is disposed on the plate 11 and is used to adjust the position of the test mechanism 40 described below, thereby causing the test mechanism 40 to clamp the strip. The adjustment mechanism 20 includes a first adjustment component 21 disposed on the plate 11 and a second adjustment component 22 disposed on the first adjustment component 21.

[0036] The first adjustment component 21 includes at least two second slide rails 211 disposed on the follower plate 132, and two adjustment plates 212 mounted on the second slide rails 211.

[0037] Each of the second slide rails 211 includes two second sliders 2111 disposed on the second slide rail 211.

[0038] The two adjusting plates 212 are respectively used to place the fixed guide wheel assembly 411 and the abutting guide wheel assembly 412. The two adjusting plates 212 can be fixedly connected to the second slider 2111 by bolts.

[0039] The second adjustment assembly 22 includes at least three fixed seats 221 disposed on the follower plate 132, two fixed blocks 222 respectively connected to the adjustment plate 212, two movable rods 22 passing through the fixed seats 221 and the fixed blocks 222, and two rotating handwheels 224 respectively connected to the two movable rods 223.

[0040] All three fixing seats 221 are fixedly connected to the follower plate 132. The three fixing seats 221 are spaced apart and located on the same straight line. The fixing seats 221 can be fixed to the follower plate 132 by bolts. The fixing seats 221 are also provided with threaded holes for the movable rod 223 to pass through.

[0041] The two fixing blocks 222 are respectively connected to the two adjusting plates 212 and are spaced apart from the follower plate 132. The fixing blocks 222 can be fixed to the adjusting plates 212 by bolts. The fixing blocks 222 are fastened to the movable rod 223.

[0042] The movable rod 223 passes through the fixed base 221 and the fixed block 222. The portion of the movable rod 223 that connects to the fixed base 221 has an external thread 2231, and the movable rod 223 and the fixed base 221 are fixedly connected by the thread. Each movable rod 223 passes through two adjacent fixed bases 221 and is mounted on two adjacent fixed bases 221.

[0043] The adjusting handwheel 224 is used to control the movement direction of the movable rod 223. Specifically, by rotating the adjusting handwheel 224, the movable rod 223 connected to the fixed base 221 is threaded in or out, thereby moving the adjusting plate 212 on the fixed block 222 that is fastened to the movable rod 223. This allows adjustment of the distance between the two adjusting plates 212, and further adjustment of the distance between the fixed guide wheel assembly 411 and the abutting guide wheel assembly 412 according to the width of the strip material, making the strip material fit more closely to the guide wheel assembly 41, resulting in more accurate test results.

[0044] like Figure 4As shown, there are multiple roller mechanisms 30, which are spaced apart on the follower plate 132. The number of roller mechanisms 30 can be set according to actual needs. In this embodiment, there are four roller mechanisms 30. The height of the four roller mechanisms 30 is on the same horizontal plane, so that the strip is on the same horizontal line during movement, ensuring that the strip is as flat as possible during transport, and thus making it easier to test the straightness of the strip.

[0045] The multiple roller mechanisms 30 have the same structure. Each roller mechanism 30 includes two roller supports 31 spaced apart and fixedly mounted on the follower plate 132, a lower roller 32 mounted on the roller supports 31, two adjusting components 33 respectively mounted on the roller supports 31, and an upper roller 34 mounted on the adjusting components 33 and opposite to the lower roller 32. The multiple roller mechanisms 30 are used to ensure that the conveyor belt moves horizontally during transport.

[0046] The roller bracket 31 is provided with a receiving groove 311 for accommodating the adjusting component 33, and a guide groove 312 provided on two opposite sidewalls of the receiving groove 311. The receiving groove 311 is used to accommodate the adjusting component 33. The guide groove 312 is used to insert the adjusting block in the adjusting component 33, and allows the adjusting block to slide up and down in the guide groove 312.

[0047] The lower roller 32 is rotatably disposed between the two roller supports 31.

[0048] Each of the adjustment components 33 includes two guide rods 331 fixed to the bottom of the receiving groove 311, an adjustment block 332 slidably inserted on the guide rods 331, two abutting elastic members 333 respectively sleeved on the guide rods 331, and an adjustment wheel 334 mounted on the receiving groove 311 for adjusting the adjustment block 332.

[0049] The guide rod 331 is used to guide the movement direction of the abutting elastic member 333, so that the abutting elastic member 333 can only move along the guide rod 331.

[0050] The adjusting block 332 abuts against the guide rod 331 on one side and against the adjusting wheel 334 on the other side. The adjusting block 332 is used to support and support the upper roller 34.

[0051] One end of the abutting elastic member 333 abuts against the roller bracket 31, and the other end abuts against the adjusting block 332. The abutting elastic member 333 elastically abuts against the roller bracket 31, so that there is a gap between the lower roller 32 and the upper roller 34, which facilitates the material to pass through the gap during transport.

[0052] The adjusting wheel 334 is fixedly connected to the adjusting block 332. The adjusting wheel 334 can be twisted in or out according to the thickness of the strip material, thereby adjusting the distance between the upper roller 34 and the lower roller 31 connected to the adjusting block 332. This ensures that the upper roller 34 is in close contact with the lower roller 32 when the strip material is allowed to pass through, reducing the vertical vibration of the strip material during transportation, ensuring that the strip material is in a stable transportation state, reducing the influence of other variables on the measurement results, and making the measurement results more accurate.

[0053] like Figure 5 As shown, the testing mechanism 40 includes two sets of guide wheel assemblies 41 spaced apart on the adjustment plate 212, and a set of testing components 42 disposed on the adjustment plate 212 and located between the two sets of guide wheel assemblies 41.

[0054] Both sets of guide wheel assemblies 41 have the same structure. Each set of guide wheel assemblies 41 includes a fixed guide wheel assembly 411 disposed on one of the adjusting plates 212, and an abutting guide wheel assembly 412 disposed on the other of the adjusting plates 212 and disposed opposite to the fixed guide wheel assembly 411.

[0055] The fixed guide wheel assembly 411 includes a fixed bracket 4111 disposed on the adjusting plate 212, and a fixed wheel 4112 disposed on the fixed bracket 4111. The connection method between the fixed bracket 4111 and the adjusting plate 212 is varied and not specifically limited here. In this embodiment, the fixed bracket 4111 is fixed to the adjusting plate 212 by bolts. The fixed wheel 4112 is mounted on the fixed bracket 4111, and its rotation axis is perpendicular to the feeding direction.

[0056] The abutting guide wheel assembly 412 includes an abutting plate 4121 fixedly mounted on the adjusting plate 212, at least one first guide member 4122 fixedly mounted on the abutting plate 4121, an abutting guide wheel frame 4123 slidably mounted on the first guide member 4122, at least one first elastic member 4124 sleeved on the first guide member 4122 and clamped between the abutting guide wheel frame 4123 and the abutting plate 4121, and an abutting wheel 4125 rotatably mounted on the abutting guide wheel frame 4124. Preferably, the abutting guide wheel assembly 412 is made of aluminum. Compared with traditional steel materials, aluminum can reduce the weight of the entire guide wheel assembly 41, thereby reducing the load-bearing pressure on the support 10.

[0057] It is not difficult to imagine that the abutment plate 4121 has a threaded hole for screwing the first guide member 4123.

[0058] The first guide member 4122 is used to guide the sliding direction of the abutment wheel 4125, so its length direction is the same as the arrangement direction of the abutment wheel 4125 and the fixed wheel 4112. In this embodiment, there are two first guide members 4122.

[0059] The abutment guide wheel frame 4123 is a groove-shaped structure and is used to support the abutment wheel 4125.

[0060] One end of the first elastic member 4124 abuts against the top plate 4121, and the other end abuts against the top guide wheel frame 4123, thereby pushing the top wheel 4125 on the top guide wheel frame 4123 to abut against the material during material transport along the axial direction of the first guide member 4122.

[0061] The abutting wheel 4125 is used to abut one side of the conveyor belt when the belt moves, while the fixed wheel 4112 abuts the other side of the conveyor belt.

[0062] As the conveyor belt moves through the roller assembly 31, one side of the belt is abutted by two fixed rollers 4112, and the other side is elastically abutted by two abutting rollers 4125. This relatively fixes the conveyor belt in the horizontal direction, ensuring a smooth transport state and guaranteeing the accuracy of subsequent measurement results.

[0063] like Figure 6 As shown, the test assembly 42 includes a mounting bracket 421 fixed on the adjustment plate 212 and located between the two fixed guide wheel assemblies 411, a test guide wheel 422 disposed on the mounting bracket 421, and a test pen 423 disposed on the mounting bracket 421 and located between the test guide wheel 422 and the mounting bracket 421.

[0064] The mounting bracket 421 includes a mounting plate 4211 fixedly mounted on the adjusting plate 212, at least one second guide member 4212 fixedly mounted on the mounting plate 4211, a test guide wheel frame 4213 slidably mounted on the second guide member 4212, at least one second elastic member 4214 sleeved on the second guide member 4212 and clamped between the mounting plate 4211 and the test guide wheel frame 4213, and a guide slide rail 4215 fixedly mounted on the adjusting plate 212 and connected to the test guide wheel frame 4213.

[0065] It is not difficult to imagine that the mounting plate 4211 is also provided with threaded holes for screwing the second guide member 4212, and the mounting plate 4211 can be fixedly connected to the adjusting plate 212 by bolts.

[0066] The second guide member 4212 is used to guide the elastic deformation direction of the second elastic member 4214.

[0067] The test guide wheel frame 4213 is a groove-shaped structure and is used to support the test guide wheel 422.

[0068] One end of the second elastic member 4214 abuts against the mounting plate 4211, and the other end abuts against the test guide wheel frame 4213. The second elastic member 4214 is used to push the test guide wheel 422 on the test guide wheel frame 4213 to abut against the material along the axial direction of the first guide member 4122 during material transport, thereby facilitating the straightness measurement of the measuring pen 423.

[0069] The guide rail 4215 includes a linear guide rail 4216 disposed on the adjusting plate 212, and a fixing block 4217 disposed on the linear guide rail 4216. The guide rail 4215 is used to ensure that the test guide wheel frame 4213 moves along a straight line.

[0070] The linear guide rail 4216 is used to guide the fixed block 4217 to move in a straight line along the linear guide rail 4216.

[0071] The fixing block 4217 is fixedly connected to the test guide wheel frame 4213. Preferably, the fixing block 4217 can be fixed to the test guide wheel frame 4213 by means of bolt connection.

[0072] The test guide wheel 422 is mounted on the test guide wheel frame 4213. It is used to move along with the test guide wheel frame 4213 as the second elastic member 4214 pushes the test guide wheel frame 4213, thereby abutting against the material, facilitating the accurate measurement of the straightness of the material by the measuring pen 423 connected to the test guide wheel 422.

[0073] The test pen 423 includes a test pen body 424 connected to the test guide wheel 422, a test plate 425 connected to the test guide wheel frame 4214 and abutting against the test pen body 424, and a plurality of test pen protection plates 426 disposed around the test pen body 424 for protecting the test pen body 424.

[0074] The elastic coefficient of the second elastic element 4214 is smaller than that of the first elastic element 4124. Under the same elastic deformation, the elastic force generated by the first elastic element 4213 is greater than that generated by the second elastic element 4214. Therefore, the strip is pushed towards the test wheel 4215 by the first elastic element 4124 during movement. Preferably, the elastic coefficients of the first elastic element 4124 and the second elastic element 4214 should be as small as possible while ensuring that the test guide wheel 422 and the abutment guide wheel assembly 412 can be pushed, so that under the same deformation, the elastic force generated by the second elastic element 4214 and the first elastic element 4124 is small, and the strip will not be excessively squeezed during transportation, thus causing unnecessary damage to the strip.

[0075] The measuring pen body 424 passes through the mounting plate 4211 and abuts against the measuring plate 425. The measuring pen body 424 is a testing device used to continuously test the tensile or compressive amount of the second elastic element 4214 during the process of the test guide roller 422 adhering to the material, and uploads the data to the backend equipment for statistical analysis to determine the curvature of the material. It is conceivable that the measuring pen body 424 also includes a distance sensor for measuring distance changes.

[0076] The test plate 425 is mounted on the test guide wheel frame 4214 and moves with the test guide wheel 422. Since the test plate 425 abuts against the test pen body 424, the test plate 425 will drive the test pen body 424 to move during the movement.

[0077] The probe protection plate 426 is disposed around the probe body 424 to protect the probe body 424 from external impacts and collisions.

[0078] This invention requires the use of an external driving device, which can be a drive motor or a conveyor belt, etc. When the strip is driven by the external driving device, one end of the strip is fixed and abutted by two of the fixed wheels 4112, and the other end is abutted by two of the abutting wheels 4125. At this time, the test guide wheel 422 will adhere to the strip under the elastic action of the second elastic member 4214, and according to the degree of curvature of the strip along the width direction, i.e., the straightness, the measuring pen 422 can count the amount of elongation or shortening of the test wheel 4215 and upload it to the background device for analysis and judgment to determine whether the straightness of the strip meets the error standard.

[0079] Compared with the prior art, the tape straightness testing device provided by this utility model, by setting the guide wheel assembly 41 and the testing assembly 42 on the adjustment plate assembly 20, can measure the curvature of the tape side when the roller mechanism 30 is conveying the tape. Specifically, when the tape is conveyed by the roller mechanism 30, one side of the tape is abutted by the two fixed wheels 4112, and the other side is elastically abutted by the abutting wheel 4125 pushed by the first elastic member 4124. At this time, the testing wheel 4215, located between the two fixed wheels 4112, is elastically pushed by the second elastic member 4214 and adheres to the tape when the tape moves. The curvature of the tape side is judged by the elongation or contraction of the measuring pen 422 that is constantly abutting the testing wheel 4215, thereby detecting the straightness of the tape.

[0080] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A device for testing the straightness of a strip of material, characterized in that: The material straightness testing device includes a frame, an adjustment mechanism mounted on the frame, and a testing mechanism connected to the adjustment mechanism. The adjustment mechanism includes two adjustment plates. The testing mechanism includes two sets of guide wheel assemblies respectively mounted on the two adjustment plates, and a testing assembly mounted on the adjustment plate and located between the two sets of guide wheel assemblies. The two sets of guide wheel assemblies have the same structure. Each set of guide wheel assemblies includes a fixed guide wheel assembly mounted on one of the adjustment plates, and a counter-guide wheel assembly mounted on the other of the adjustment plates and opposite to the fixed guide wheel assembly. The fixed guide wheel assembly includes a fixed bracket mounted on the adjustment plate and a fixed wheel mounted on the fixed bracket. The counter-guide wheel assembly includes a counter-plate fixedly mounted on the adjustment plate, at least one first guide member fixedly mounted on the counter-plate, a counter-guide wheel frame slidably mounted on the first guide member, at least one first elastic member sleeved on the first guide member and clamped between the counter-guide wheel frame and the counter-plate, and a rotating... The test assembly includes an abutment wheel mounted on the abutment guide wheel frame, a mounting bracket fixed on the adjustment plate and located between two fixed guide wheel assemblies, a test guide wheel mounted on the mounting bracket, and a measuring pen mounted on the mounting bracket and located between the test guide wheel and the mounting bracket. The mounting bracket includes a mounting plate fixed on the adjustment plate, at least one second guide member fixed on the mounting plate, a test guide wheel frame slidably mounted on the second guide member, at least one second elastic member sleeved on the second guide member and clamped between the mounting plate and the test guide wheel frame, and a guide rail fixed on the adjustment plate and connected to the test guide wheel frame. The elastic coefficient of the second elastic member is less than that of the first elastic member. During transport, one side of the strip is fixed by the fixed wheel, and the abutment wheel, pushed by the first elastic member, is constantly abutting the other side. The test guide wheel located on the same side as the fixed wheel is pushed by the second elastic member to abut the strip, and the elongation or compression of the test guide wheel is measured by the measuring pen to detect the straightness of the strip.

2. The strip straightness testing device as described in claim 1, characterized in that: The frame includes a plate, multiple buffer components disposed on the plate, and follower components connected to the multiple buffer components. Each buffer component includes a fixed plate fixedly disposed on the plate, a guide rod inserted into the fixed plate, and a buffer elastic element sleeved on the guide rod. The follower component includes at least two first slide rails disposed on the plate, and a follower plate disposed on the first slide rails. Each first slide rail also includes two first sliders disposed on the first slide rails.

3. The strip straightness testing device as described in claim 2, characterized in that: The bottom surface of the follower plate is fixed on the first slider, and the side surface is connected to the fixed plate by the guide rod.

4. The strip straightness testing device as described in claim 2, characterized in that: The adjustment mechanism includes a first adjustment component disposed on the plate and a second adjustment component disposed on the first adjustment component. The first adjustment component includes at least two second slide rails disposed on the follower plate, and the two adjustment plates are mounted on the second slide rails.

5. The strip straightness testing device as described in claim 4, characterized in that: The second adjustment assembly includes at least three fixed seats disposed on the follower plate, two fixed blocks respectively connected to the adjustment plate, two movable rods passing through the fixed seats and the fixed blocks, and two rotary handwheels respectively connected to the two movable rods.

6. The strip straightness testing device as described in claim 5, characterized in that: The fixed block and the follower plate are spaced apart, and the fixed block is fixedly connected to the movable rod.

7. The strip straightness testing device as described in claim 4, characterized in that: The linearity testing device for the conveyor belt also includes multiple roller mechanisms connected to the adjustment mechanism and used to ensure that the conveyor belt is in a horizontal state during conveying. Each roller mechanism includes two roller brackets spaced apart and fixedly mounted on the follower plate, a lower roller mounted on the roller bracket, two adjustment components respectively mounted on the roller bracket, and an upper roller mounted on the adjustment component and opposite to the lower roller. The roller bracket is provided with a receiving groove for accommodating the adjustment component and a guide groove provided on two opposite sidewalls of the receiving groove.

8. The strip straightness testing device as described in claim 7, characterized in that: Each of the adjustment components includes two guide rods fixed to the bottom of the receiving groove, an adjustment block slidably inserted on the guide rods, two abutting elastic members respectively sleeved on the guide rods, and an adjustment wheel mounted on the receiving groove for adjusting the adjustment block.

9. The strip straightness testing device as described in claim 1, characterized in that: The guide rail includes a linear guide rail disposed on the adjustment plate and a fixing block disposed on the linear guide rail. The guide rail is used to ensure that the test guide wheel frame moves along a straight line, and the fixing block is fixedly connected to the test guide wheel frame.

10. The strip straightness testing device as described in claim 1, characterized in that: The test pen includes a test pen body connected to the test guide wheel, a test plate connected to the test guide wheel frame and abutting against the test pen body, and a plurality of test pen protection plates disposed around the test pen body for protecting the test pen body.

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