Thickness measuring device

Abstract

A thickness measuring device belongs to the technical field of film product detection. The thickness measuring device is used for measuring the thickness of foam sleeving the surface of the roll core, and the two ends of the roll core are provided with end portions with the length larger than that of the foam in the axial direction of the roll core. The thickness measuring device comprises a rack, and a distance measuring assembly and a roll core fixing assembly which are arranged on the rack. Wherein the roll core fixing assembly is used for fixing a roll core; the distance measuring assembly comprises a supporting piece and a distance measuring instrument, the supporting piece is arranged on the side, corresponding to the radial direction of the roll core, of the rack, and the distance measuring instrument is arranged on the supporting piece; the range finder is used for obtaining a first distance between the range finder and the surface of the end part and a second distance between the range finder and the surface of the foam, and the difference between the first distance and the second distance is the thickness of the foam. By using the thickness measuring device, the thickness measuring precision and the measuring efficiency of the foam can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of product detection, and in particular to a thickness measuring device. Background Art

[0002] In the field of film production, a reel is used to reel the film. In order to improve the reeling quality, many reels currently on the market are composed of a core and a foam sleeved on the surface of the core. Along the axial direction of the core, both ends of the core have ends that are longer than the foam. That is, the two ends of the core are not sleeved with foam.

[0003] The uniformity of the foam thickness on the core surface will directly affect the quality of film winding. If the thickness of the foam on the core surface is uneven, it will cause wrinkles and warping during winding, seriously affecting the product yield. Therefore, it is necessary to measure the thickness of the foam before use to select a winding shaft with an acceptable thickness difference.

[0004] At present, the foam thickness measurement method mainly relies on operators to use digital display vernier calipers to perform manual measurement, first measuring the thickness of the core, then measuring the thickness of the core plus the foam, and taking the difference between the two as the thickness of the foam. It is necessary to measure multiple times along the circumference of the winding shaft. This measurement method has poor measurement accuracy and is time-consuming. Utility Model Content

[0005] Based on the above-mentioned deficiencies, the present application provides a thickness measuring device to partially or completely improve the problem of foam thickness measurement in the related art.

[0006] This application is implemented as follows:

[0007] The example of the present application provides a thickness measuring device for measuring the thickness of the foam sleeved on the surface of the core. Along the axial direction of the core, both ends of the core have ends whose length is greater than that of the foam. The thickness measuring device includes: a frame, and a distance measuring component and a core fixing component arranged on the frame. Among them, the core fixing component is used to fix the core; the distance measuring component includes a support and a distance meter, the support is arranged on one side of the frame corresponding to the radial direction of the core, and the distance meter is arranged on the support; the distance meter is used to obtain a first distance between the distance meter and the end surface and a second distance between the distance meter and the foam surface, and the difference between the first distance and the second distance is the thickness of the foam.

[0008] In the above implementation process, the core is supported on the frame by the core fixing assembly, and then the distance meter is supported by the support member arranged on the side of the frame corresponding to the radial direction of the core, so that the distance meter faces the core and the foam, so as to obtain the first distance between the distance meter and the end surface, and the second distance between the distance meter and the foam surface. The difference between the first distance and the second distance is the thickness of the foam. The thickness measuring device can automatically measure the thickness of the foam, thereby improving the measurement accuracy and efficiency.

[0009] In an optional embodiment, the rangefinder includes two laser displacement sensors; the two laser displacement sensors are axially spaced apart on the support member, and the distance between the two laser displacement sensors and the axis of the winding core is the same, one of the laser displacement sensors is opposite to the end to measure the first distance, and the other laser displacement sensor is opposite to the foam to measure the second distance.

[0010] In the above implementation process, the rangefinder includes two laser displacement sensors axially spaced apart on the support member, and the distances between the two laser displacement sensors and the axis of the winding core are the same, one of the laser displacement sensors measures relative to the end to obtain a first distance, and the other laser displacement sensor measures relative to the foam to obtain a second distance, and the difference between the first distance and the second distance can be used to obtain the thickness of the foam.

[0011] In an optional embodiment, the thickness measuring device includes two sets of distance measuring components spaced apart along the axial direction, and the two sets of distance measuring components respectively obtain the thickness of the foam at both ends along the axial direction.

[0012] In the above implementation process, the thickness measuring device includes two sets of distance measuring components spaced apart in the axial direction, in one set of distance measuring components, a laser displacement sensor is opposite to one end of the winding core to measure the first distance, and another laser displacement sensor is opposite to the surface of one end of the foam to measure the second distance, and the thickness of one end of the foam is obtained by using the difference between the first distance and the second distance; in the other set of distance measuring components, one laser displacement sensor is opposite to the other end of the winding core to measure the first distance, and another laser displacement sensor is opposite to the surface of the other end of the foam to measure the second distance, and the thickness of the other end of the foam is obtained by using the difference between the first distance and the second distance. Using two sets of distance measuring components to measure the thickness of both ends of the foam can further improve the measurement accuracy.

[0013] In an optional embodiment, the distance measuring assembly further includes an adjusting member, which is disposed on the supporting member, and the two laser displacement sensors are axially spaced apart on the adjusting member, and the adjusting member is used to adjust the distance between the laser displacement sensor and the axis of the winding core.

[0014] In the industrial production process, different specifications or types of winding shafts are usually required, and the diameters of winding shafts of different specifications or types will change. In the above implementation process, two laser displacement sensors are connected to the support member by using an adjustment member, and the distance between the two laser displacement sensors and the axis of the winding core can be adjusted by using the adjustment member to adapt to the thickness test of foam of winding shafts of different diameters, thereby improving the applicability of the thickness measuring device.

[0015] In an optional embodiment, the support member can slide axially relative to the frame, and the support member can be selectively fixed on the sliding track to adjust the axial position of the rangefinder so that one of the laser displacement sensors is opposite to the end and the other laser displacement sensor is opposite to the foam.

[0016] In the industrial production process, the length of winding shafts of different specifications or types may change. In the above implementation process, the support member can slide axially relative to the frame and can be selectively fixed on the sliding track. After the length of the winding shaft changes, the axial sliding of the support member can be used to adjust the axial position of the rangefinder, so that one of the laser displacement sensors is relative to the end to measure the first distance, and the other laser displacement sensor is relative to the foam to measure the second distance, and the difference between the first distance and the second distance is used to obtain the thickness of the foam. The thickness measuring device provided in the example of this application can meet the thickness measurement requirements of foams of winding shafts of different lengths and has high adaptability.

[0017] In an optional embodiment, the core fixing assembly includes a first bracket and a second bracket arranged opposite to each other, the first bracket is used to connect to one axial end of the core, the second bracket is used to connect to the other axial end of the core, the second bracket is slidably connected to the frame along the axial direction, and the second bracket can be selectively fixed on the sliding track so that the core is clamped between the first bracket and the second bracket.

[0018] In the above implementation process, the first bracket and the second bracket are axially spaced apart on the frame, and the second bracket is slidably connected to the frame along the axial direction and selectively fixed on the sliding track. One end of the winding core can be connected to the first bracket, and then the position of the second bracket is slidably adjusted to connect the other end of the winding core to the second bracket. The winding core is clamped by using the first bracket and the second bracket to fix the winding shaft.

[0019] In an optional embodiment, the first bracket and the second bracket both include a support and a conical sleeve, the conical sleeve is rotatably connected to the support via a connecting rod, the support in the first bracket is connected to the frame, and the support in the second bracket is slidably connected to the frame; the conical sleeve is used to extend from the end of the winding core into the interior of the winding core and be fixed so that the winding core can rotate relative to the support.

[0020] In the above implementation process, the cone sleeve can be extended from the end of the core into the interior of the core and fixed, and the cone sleeve is connected to the support through a connecting rod, so that the core can rotate relative to the support, and the core can be clamped and fixed between the first bracket and the second bracket while the core can rotate relative to the first bracket and the second bracket. The core clamped between the first bracket and the second bracket can rotate relative to the first bracket and the second bracket, and a rangefinder can be used to measure multiple first distances and second distances of the winding shaft along the radial direction of the core foam to obtain multiple thickness values ​​along the foam, thereby improving the measurement accuracy.

[0021] In an optional embodiment, the winding core fixing assembly further comprises a first hand wheel, the first hand wheel is connected to an end of the connecting rod in the second bracket away from the cone sleeve, and the first hand wheel is used to rotate the cone sleeve to rotate the winding core.

[0022] In the above implementation process, the first hand wheel is connected to the end of the connecting rod of the second bracket away from the cone sleeve. The connecting rod can be rotated by rotating the first hand wheel, and then the cone sleeve can be rotated to realize the rotation of the winding core relative to the first bracket and the second bracket.

[0023] In an optional embodiment, the core fixing assembly also includes a V-shaped support block for supporting the core, and the frame is provided with a plurality of first fixed positions arranged at intervals along the axial direction. The V-shaped support block can be selectively detachably connected to one of the first fixed positions, and the V-shaped support block is located between the first bracket and the second bracket.

[0024] In the above implementation process, a V-shaped support block is arranged between the first bracket and the second bracket, and the winding shaft can be installed on the first bracket, and then the winding shaft is temporarily placed on the V-shaped support block, and then the second bracket is moved to make the winding shaft contact with the second bracket, which is more convenient for installation. In addition, the V-shaped support block is arranged between the first bracket and the second bracket, and the V-shaped support block can be selectively detachably connected to one of the first fixed positions.

[0025] In an optional embodiment, the thickness measuring device also includes an electronic control component, which includes a display screen, and the display screen is connected to the rangefinder signal; the display screen is used to calculate the difference between the first distance and the second distance, and display an alarm screen and / or emit an alarm prompt sound when the difference exceeds the alarm value.

[0026] In the above implementation process, the display screen is connected to the distance meter signal, and the difference between the first distance and the second distance can be processed by the display screen to obtain the measured thickness value of the foam, and the measured thickness value can be displayed. The display screen can also determine whether the measured thickness value deviates from the set value, and when the measured thickness value is greater than or less than the set value, an alarm screen is displayed and an alarm sound is sounded, so that the operator can handle it in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0028] Figure 1 A schematic diagram of the structure of the reel provided for the example of this application;

[0029] Figure 2 A schematic diagram of the structure of a thickness measuring device provided for an example of this application;

[0030] Figure 3 A schematic diagram of the installation of the thickness measuring device and the winding shaft provided in the example of this application;

[0031] Figure 4 A schematic diagram of the structure of the distance measurement component provided for the example of this application;

[0032] Figure 5 for Figure 3 A partial enlarged view of part A in the middle.

[0033] Icon: 100-reel; 101-reel core; 1011-end; 102-foam; D1-axial direction;

[0034] 1-thickness measuring device; 10-frame; 20-distance measuring assembly; 21-distance meter; 211-laser displacement sensor; 22-support; 23-adjusting member; 231-first adjusting plate; 232-second adjusting plate; 233-fixing plate; 30-winding core fixing assembly; 31-first bracket; 32-second bracket; 311-support; 312-taper sleeve; 313-connecting rod; 41-first slide rail; 42-first slider; 43-first guide rail; 44-screw; 45-second slider; 46-screw seat; 50-V-type support block; 61-first hand wheel; 62-second hand wheel; 70-electric control assembly; 71-display screen; L1-first distance; L2-second distance. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] See also Figure 1 In the field of film production devices, a winding shaft 100 for winding a film is usually composed of a winding core 101 and a foam 102 sleeved on the surface of the winding core 101. In addition, along the axial direction D1 of the winding core 101, both ends of the winding core 101 have end portions 1011 with a length greater than the foam 102. That is, the two ends 1011 of the winding core 101 are not sleeved with the foam 102.

[0040] The thickness difference of the foam 102 on the surface of a core 101 will directly affect the quality of film winding. Therefore, it is necessary to measure the thickness of the foam 102 on the surface of the core 101 to ensure that the thickness difference of the core 101 is within an acceptable range.

[0041] At present, the thickness measurement method of the foam 102 mainly relies on operators to manually measure using a digital display vernier caliper. This measurement method has poor measurement accuracy and is time-consuming.

[0042] Therefore, the present application provides a thickness measuring device 1, which can improve the measurement accuracy and efficiency to a certain extent. In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. It should be noted that, unless otherwise specified, the "radial" described herein refers to the radial direction of the core 101 when the winding shaft 100 is assembled in the thickness measuring device 1, and the "axial direction" refers to the axial direction of the core 101 when the winding shaft 100 is assembled in the thickness measuring device 1.

[0043] See also Figure 2 and Figure 3 The thickness measuring device 1 includes a frame 10 , and a distance measuring component 20 and a winding core fixing component 30 arranged on the frame 10 .

[0044] The winding core fixing assembly 30 is used to fix the winding core 101 .

[0045] Please combine Figure 2 , Figure 3 , Figure 4 and Figure 5 The distance measuring assembly 20 includes a support member 22 and a distance meter 21. The support member 22 is arranged on one side of the frame 10 corresponding to the radial direction of the winding core 101, and the distance meter 21 is arranged on the support member 22; the distance meter 21 is used to obtain a first distance L1 between the distance meter 21 and the surface of the end 1011 and a second distance L2 between the distance meter 21 and the surface of the foam 102, and the difference between the first distance L1 and the second distance L2 is the thickness of the foam.

[0046] Using the thickness measuring device 1 provided in the example of the present application, the core 101 can be fixed to the frame 10 through the core fixing assembly 30, and then the distance meter 21 can be used to obtain the first distance L1 between the distance meter 21 and the surface of the end 1011 and the second distance L2 between the distance meter 21 and the surface of the foam 102. The difference between the first distance L1 and the second distance L2 is the thickness of the foam 102, which can improve the problem of high measurement errors caused by manual measurement and improve measurement efficiency.

[0047] The frame 10, the distance measuring assembly 20 and the winding core fixing assembly 30 in the thickness measuring device 1 provided by the example of the present application are further described in detail below in conjunction with the accompanying drawings.

[0048] The frame 10 is used to support the distance measuring component 20 and the winding core fixing component 30. The present application does not limit the specific structure of the frame 10, and relevant personnel can make corresponding choices according to needs.

[0049] In a possible embodiment, the frame 10 includes a support platform and a plurality of legs disposed at the lower end of the support platform. The support platform is used to install and support the distance measurement component 20 and the winding core fixing component 30.

[0050] The rangefinder 21 in the distance measuring assembly 20 is used to obtain a first distance L1 between the rangefinder 21 and the surface of the end 1011, and a second distance L2 between the rangefinder 21 and the surface of the foam 102, so as to calculate the difference between the first distance L1 and the second distance L2, and the difference between the first distance L1 and the second distance L2 is the thickness of the foam 102.

[0051] In one possible embodiment, please refer to Figure 2 The rangefinder 21 includes two laser displacement sensors 211 ; the two laser displacement sensors 211 are spaced apart from each other on the support member 22 along the axial direction D1 , and the distance between the two laser displacement sensors 211 and the axis of the winding core 101 is the same.

[0052] Since the distances between the two laser displacement sensors 211 and the axis of the winding core 101 are the same, when one of the laser displacement sensors 211 is opposite to the end 1011 to measure the first distance L1 between it and the surface of the end 1011, and the other laser displacement sensor 211 is opposite to the foam 102 to measure the second distance L2 between it and the surface of the foam 102, the thickness of the foam 102 can be calculated using the difference between the first distance L1 and the second distance L2.

[0053] In the field of film production, winding shafts 100 of different diameters are usually used, and the outer diameters of the winding core 101 and the foam 102 may vary.

[0054] Further, in order to improve the applicability of the thickness measuring device 1, so as to facilitate the use of the distance meter 21 provided on the frame 10 through the support member 22 to measure the thickness of the foam 102 at the reel 100 of different diameters, in a possible embodiment, please continue to refer to Figure 4 The distance measuring assembly 20 further includes an adjusting member 23. The adjusting member 23 is disposed on the supporting member 22, and two laser displacement sensors 211 are spaced apart from each other on the adjusting member 23 along the axial direction D1. The adjusting member 23 is used to adjust the distance between the laser displacement sensor 211 and the axis of the winding core 101.

[0055] Further, the present application does not limit how the adjusting member 23 adjusts the distance between the laser displacement sensor 211 and the axis of the winding core 101. In a possible embodiment, please continue to refer to Figure 4 The adjusting member 23 includes a first adjusting plate 231 and a second adjusting plate 232 which are stacked. The first adjusting plate 231 is fixedly connected to the supporting member 22. Two laser displacement sensors 211 are arranged at intervals on the second adjusting plate 232 along the axial direction D1. The second adjusting plate 232 is provided with a plurality of connection positions at intervals along the radial direction of the winding core 101. One of the connection positions can be selectively connected to the first adjusting plate 231, so that the second adjusting plate is radially close to or away from the axis of the winding core 101, thereby adjusting the distance between the laser displacement sensor 211 and the axis.

[0056] Further, the present application does not limit how to selectively connect one of the connection positions to the first adjustment plate 231 to adjust the distance between the laser displacement sensor 211 and the axis. In a possible embodiment, the first adjustment plate 231 is provided with a fixing hole, and the second adjustment plate 232 is provided with a strip-shaped combination hole extending in the radial direction, and the strip-shaped combination hole forms a plurality of connection positions; the second adjustment plate 232 can selectively move in the radial direction. The adjustment member 23 also includes a combination member, which passes through the combination hole and is fixed to the fixing hole, and the combination member cooperates with the combination hole to limit the movement of the second adjustment plate in the radial direction.

[0057] Furthermore, in order to improve the radial movement convenience of the second adjustment plate 232, two positioning pins may be arranged at intervals along the axial direction D1 on the first adjustment plate 231, and the second adjustment plate 232 may be provided with two positioning holes extending radially at intervals, with one positioning pin inserted into one positioning hole.

[0058] Further, in order to facilitate the two laser displacement sensors 211 to be spaced apart along the axial direction D1 at the adjusting member 23, in a possible embodiment, please continue to refer to Figure 4 A fixing plate 233 is provided at two ends of the second adjustment plate 232 along the axial direction D1, and the laser displacement sensors 211 are fixed to the fixing plates 233 one by one.

[0059] When it is necessary to move the laser displacement sensor 211 radially away from the axis of the winding core 101, the coupling can be withdrawn from the fixing hole and the strip coupling hole, and then the second adjustment plate 232 is moved in the radial direction away from the winding core 101 under the guidance of the positioning pin. After moving to the target position, the coupling is inserted into the strip coupling hole and the fixing hole to fix the second adjustment plate 232 at the target position.

[0060] In the field of film production, a reel 100 with a certain length is usually used, and the lengths of the end 1011 and the foam 102 may change. When the lengths of the end 1011 and the foam 102 change, the positions of the two laser displacement sensors 211 on the frame need to be adjusted accordingly, so that the two laser displacement sensors 211 are opposite to the end 1011 and the foam 102, respectively.

[0061] Furthermore, in order to improve the applicability of the thickness measuring device 1, in a possible embodiment, the support member 22 can slide relative to the frame 10 along the axial direction D1, and the support member 22 can be selectively fixed on the sliding track to adjust the position of the rangefinder 21 along the axial direction D1, so that one of the laser displacement sensors 211 is opposite to the end 1011, and the other laser displacement sensor 211 is opposite to the foam 102.

[0062] Further, the present application does not limit how the support member 22 is slidably connected to the frame 10 along the axial direction D1 and selectively fixed on the sliding track. In a possible embodiment, please refer to Figure 2 A first slide rail 41 extending along the axial direction D1 can be provided on the radial side of the frame corresponding to the winding core 101, the first slide rail 41 is slidably connected with a first slider 42, and the support member 22 is fixedly connected to the first slider 42; along the axial direction D1, the first slide rail 41 is provided with a plurality of first fixed positions, and the support member 22 can be selectively connected to one of the first fixed positions.

[0063] Furthermore, the support member 22 can be provided with a bottom plate and a vertical support plate, a first adjustment plate 231 is provided above the support plate, a plurality of first threaded holes are provided at the bottom plate, and a plurality of first threaded holes are also provided at the top of the first slider 42. The bottom plate can be fixed to the first slider 42 through the first threaded holes by screws, so that the support member 22 can slide along the first slide rail 41.

[0064] In order to facilitate the fixation of the support member 22 that slides to the set position, a connecting plate can be set on the side of the base plate, and the connecting plate is provided with a second threaded hole. The first slide rail 41 is also provided with multiple second threaded holes at intervals along the axial direction D1. After sliding the support member 22, screws can be passed through the second threaded holes to fix the support member 22 at the target position of the first slide rail 41.

[0065] For further information, please refer to Figure 2 The thickness measuring device 1 can be provided with two sets of distance measuring components 20, and the support members 22 in each set of distance measuring components 20 are slidably connected to the first slide rail 41 through the first slider 42. The two sets of distance measuring components 20 can be used to measure the thickness of the foam 102 at both ends along the axial direction D1 respectively.

[0066] The core fixing assembly 30 is used to fix the core 101. In a possible embodiment, please continue to refer to Figure 2 The core fixing assembly 30 includes a first bracket 31 and a second bracket 32 ​​which are arranged opposite to each other. The first bracket 31 is used to connect with one end of the core 101 in the axial direction D1, and the second bracket 32 ​​is used to connect with the other end of the core 101 in the axial direction D1. The second bracket 32 ​​is slidably connected to the frame 10 along the axial direction D1, and the second bracket 32 ​​can be selectively fixed on the sliding track so that the core 101 is clamped between the first bracket 31 and the second bracket 32.

[0067] Furthermore, the present application does not limit the specific structures of the first bracket 31 and the second bracket 32. In a possible embodiment, please continue to refer to Figure 2 The first bracket 31 and the second bracket 32 ​​each include a support 311 and a cone sleeve 312. The cone sleeve 312 is rotatably connected to the support 311 through a connecting rod 313. The support 311 in the first bracket 31 is connected to the frame 10, and the support 311 in the second bracket 32 ​​is slidably connected to the frame 10. The cone sleeve 312 is used to extend from the end of the winding core 101 into the interior of the winding core 101 and be fixed so that the winding core 101 can rotate relative to the support 311.

[0068] The core 101 is clamped between the two cone sleeves 312, and the cone sleeves 312 can rotate under the drive of the connecting rod 313, thereby realizing the rotation of the core 101. When the distance meter 21 is used to measure the thickness of the foam 102, the core 101 rotates, and multiple thickness values ​​of the foam 102 can be obtained through the distance meter 21, which can improve the measurement accuracy.

[0069] Further, in order to facilitate the rotation of the winding core 101 through the connecting rod 313, in a possible embodiment, please continue to refer to Figure 2 A first hand wheel 61 may be provided at the end of the connecting rod 313 that faces away from the cone sleeve 312 .

[0070] Alternatively, a motor may be used to drive the connecting rod 313 to rotate.

[0071] Further, the present application does not limit how the support 311 in the second bracket 32 ​​is slidably connected to the frame 10. In a possible embodiment, please continue to refer to Figure 2 The frame 10 is provided with a first guide rail 43 and a screw rod 44 extending along the axial direction D1; the first guide rail 43 is slidably connected with a second slider 45, and the screw rod seat 46 is threadedly connected with the screw rod 44; the support 311 in the second bracket 32 ​​is fixedly connected with the second slider 45 and the screw rod seat 46 at the same time, and the screw rod 44 rotates to drive the second bracket 32 ​​to move along the axial direction D1.

[0072] Furthermore, a second hand wheel 62 may be provided at one end of the screw rod 44 away from the first bracket 31 , and the second hand wheel 62 may be rotated to drive the screw rod 44 to rotate, thereby adjusting the position of the second bracket 32 ​​.

[0073] Alternatively, a motor may be used to drive the screw rod 44 to rotate.

[0074] Furthermore, a V-shaped support block 50 may be provided on the first guide rail 43 and the screw rod 44 , and the V-shaped support block 50 may be selectively fixed at any position of the first guide rail 43 and the screw rod 44 in the axial direction D1 .

[0075] Exemplarily, a connecting plate can be provided at the bottom of the V-shaped support block 50, and a threaded hole is provided at the connecting plate, and the connecting plate is detachably connected to one position of the first guide rail 43 by screws. The connecting plate is provided with a through hole, and the screw rod 44 passes through the through hole, so that the screw rod 44 can rotate relative to the connecting plate.

[0076] Before installing the reel 100 to be tested on the first bracket 31 and the second bracket 32, the reel 100 can be temporarily placed on the V-shaped support block 50, and then one end of the core 101 is lifted to the conical sleeve 312 of the first bracket 31, and then the position of the second bracket 32 ​​is roughly adjusted, and the other end of the core 101 is lifted to the height position of the conical sleeve 312 of the second bracket 32, and then the position of the second bracket 32 ​​is further adjusted, and the conical sleeve 312 at the second bracket 32 ​​is inserted into the inside of the core 101, and the reel 100 is clamped between the first bracket 31 and the second bracket 32. A single person can also quickly complete the assembly and disassembly of the reel 100. For further information, please continue to refer to Figure 3The thickness measuring device 1 may also be provided with an electric control component 70. The electric control component 70 includes a display screen 71, which is connected to the distance meter 21 by signal; the display screen 71 is used to calculate the difference between the first distance L1 and the second distance L2, and display an alarm screen and / or sound an alarm when the difference exceeds the alarm value.

[0077] Exemplarily, the display screen 71 is supported on the frame 10 by a support rod, and the display screen is wirelessly connected to each laser displacement sensor 211 .

[0078] During measurement, the winding shaft 100 is first assembled on the thickness measuring device 1 of the present application, the laser displacement sensor 211 obtains the first distance L1 and the second distance L2, the electronic control component 70 calculates the difference between the first distance L1 and the second distance L2, and obtains the thickness of the foam 102 at one position, and the first hand wheel 61 is turned. The laser displacement sensor 211 continues to obtain the thickness of the foam 102 at different positions, and takes the extreme difference among multiple thicknesses to determine whether the extreme difference is within a preset range. If so, the winding shaft 100 passes the detection.

[0079] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thickness measuring device for measuring the thickness of a foam sleeved on the surface of a core, wherein along the axial direction of the core, both ends of the core have ends longer than the foam; characterized in that: The thickness measuring device comprises: a frame, and a distance measuring component and a winding core fixing component arranged on the frame; Among them, the core fixing assembly is used to fix the core; the distance measuring assembly includes a support and a distance meter, the support is arranged on the side of the frame corresponding to the radial direction of the core, and the distance meter is arranged on the support; the distance meter is used to obtain a first distance between the distance meter and the end surface and a second distance between the distance meter and the foam surface, and the difference between the first distance and the second distance is the thickness of the foam.

2. The thickness measuring device according to claim 1, characterized in that: The rangefinder includes two laser displacement sensors; the two laser displacement sensors are arranged on the support member at intervals along the axial direction, and the distances between the two laser displacement sensors and the axis of the winding core are the same, one of the laser displacement sensors is opposite to the end to measure the first distance, and the other laser displacement sensor is opposite to the foam to measure the second distance.

3. The thickness measuring device according to claim 2, characterized in that: The thickness measuring device comprises two groups of distance measuring components spaced apart along the axial direction, and the two groups of distance measuring components respectively obtain the thickness of the foam at two ends along the axial direction.

4. The thickness measuring device according to claim 3, characterized in that: The distance measuring assembly also includes an adjusting member, which is arranged on the supporting member. Two laser displacement sensors are arranged on the adjusting member at intervals along the axial direction. The adjusting member is used to adjust the distance between the laser displacement sensor and the axis of the winding core.

5. The thickness measuring device according to claim 2, characterized in that: The support member can slide along the axial direction relative to the frame, and the support member can be selectively fixed on the sliding track to adjust the position of the rangefinder along the axial direction so that one of the laser displacement sensors is opposite to the end, and the other laser displacement sensor is opposite to the foam.

6. The thickness measuring device according to any one of claims 1 to 5, characterized in that: The core fixing assembly includes a first bracket and a second bracket arranged opposite to each other, the first bracket is used to be connected to one axial end of the core, the second bracket is used to be connected to the other axial end of the core, the second bracket is slidably connected to the frame along the axial direction, and the second bracket can be selectively fixed on a sliding track so that the core is clamped between the first bracket and the second bracket.

7. The thickness measuring device according to claim 6, characterized in that: The first bracket and the second bracket each include a support and a conical sleeve, the conical sleeve being rotatably connected to the support via a connecting rod, the support in the first bracket being connected to the frame, and the support in the second bracket being slidably connected to the frame; the conical sleeve is used to extend from the end of the winding core into the interior of the winding core and be fixed so that the winding core can rotate relative to the support.

8. The thickness measuring device according to claim 7, characterized in that: The winding core fixing assembly further comprises a first hand wheel, which is connected to an end of the connecting rod in the second bracket away from the cone sleeve, and the first hand wheel is used to rotate the cone sleeve to rotate the winding core.

9. The thickness measuring device according to claim 6, characterized in that: The core fixing assembly also includes a V-shaped support block for supporting the core, the frame is provided with a plurality of first fixed positions spaced apart along the axial direction, the V-shaped support block is selectively detachably connected to one of the first fixed positions, and the V-shaped support block is located between the first bracket and the second bracket.

10. The thickness measuring device according to claim 1, characterized in that: The thickness measuring device also includes an electronic control component, which includes a display screen, and the display screen is connected to the rangefinder signal; the display screen is used to calculate the difference between the first distance and the second distance, and display an alarm screen and / or emit an alarm prompt sound when the difference exceeds an alarm value.

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