Seat cushion cover indentation detection device and detection method

Abstract

The present invention relates to the field of indentation detection technology, and in particular to a seat cushion cover indentation detection device and detection method, comprising: a workbench; a conveying device comprising a first conveyor belt that supports and drives the piece to be tested to move, and a detection box erected above the first conveyor belt, the detection box being provided with a first detection chamber and a second detection chamber; an image acquisition device disposed in the first detection chamber, for acquiring an indentation area image of a three-dimensional pattern embossed pattern on the piece to be tested; a measuring system for measuring the boundary width from the indentation area image to the edge of the piece to be tested; a depth measuring device disposed in the second detection chamber, for measuring the indentation depth of the three-dimensional pattern embossed pattern on the piece to be tested. In the present invention, the deviation value of the indentation area image is determined by the image acquisition device and the measuring system, and the depth measuring device adjusts the measurement point position of the laser sensor according to the deviation value, so that the measurement point is at the expected measurement position, effectively ensuring the accuracy of the indentation depth measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of indentation detection, and in particular to a seat cushion cover indentation detection device and a detection method. Background Art

[0002] The embossing of seat covers is a decorative process that creates a variety of concave and convex three-dimensional pattern effects by applying specific temperature and pressure on the surface of the material. This process can not only be used to display the logo on the seat headrest, but also to emboss various texture patterns on the surface of the fabric, thereby forming a large-area decorative effect and increasing the sense of detail. If the embossing is too deep during the embossing process, it may damage the seat cover material and affect its durability; while if the embossing is too shallow, the pattern may not be obvious and lack the desired decorative effect. Therefore, the detection of embossing depth is an important quality control link in the embossing process.

[0003] However, since the cut single-piece cover cannot be accurately positioned during the transmission process, the embossed three-dimensional pattern will be offset from the center. Generally, the indentation depth detection is often performed based on the center position of the cut piece. When the three-dimensional pattern is offset, the measuring point will not be at the expected measuring position, affecting the measurement accuracy of the indentation depth. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a seat cushion cover indentation detection device and a detection method, which effectively solves the problem of inaccurate indentation measurement points caused by pattern deviation.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: a seat cushion cover indentation detection device, comprising:

[0006] Workbench;

[0007] A conveying device, arranged on the upper surface of the workbench, comprising a first conveyor belt supporting and driving the cut piece to be tested to move, and a detection box erected above the first conveyor belt, wherein the detection box is provided with a first detection chamber and a second detection chamber along the conveying direction;

[0008] An image acquisition device, arranged in the first detection chamber, for acquiring an image of an indentation area of ​​a three-dimensional pattern embossed on a piece to be tested;

[0009] A measuring system for measuring the border width from the indentation area image to the edge of the piece to be measured;

[0010] A depth measuring device, arranged in the second detection chamber, for measuring the indentation depth of the three-dimensional pattern embossed on the cut piece to be tested;

[0011] Wherein, the depth measuring device comprises a laser sensor, and a first transverse linear module supporting and driving the laser sensor to move, wherein the first transverse linear module is horizontally arranged perpendicular to the conveying direction;

[0012] The first transverse linear module can adjust the position of the laser sensor on the first transverse linear module according to the measured indentation area image and the boundary width of the edge of the face cover, so that the laser sensor can measure the indentation depth along the expected measurement position of the three-dimensional pattern embossing pattern.

[0013] Furthermore, detection windows are provided on the bottom surfaces of the first detection chamber and the second detection chamber facing the first conveyor belt;

[0014] A vertically arranged hanger is provided in the first inspection chamber, the image acquisition device is arranged at the lower end of the hanger, and the image of the three-dimensional pattern embossed pattern of the cut piece to be inspected on the first conveyor belt is collected through the inspection window;

[0015] The first transverse linear module is arranged below the second detection chamber and is located in the frame gap between the second detection chamber and the first conveyor belt. A first mounting frame is provided on the first transverse linear module. The first mounting frame extends into the second detection chamber through the detection window. The laser sensor is arranged on the first mounting frame to perform indentation depth detection on the cut piece to be detected during the transmission process.

[0016] Further, the image acquisition device includes an industrial camera, and a lighting system arranged directly below the industrial camera;

[0017] The cut piece to be tested is conveyed to the position directly below the industrial camera, and is located within the projection range of the lighting system in the vertical direction.

[0018] Furthermore, the lighting system adopts a ring light source or a dome light source.

[0019] Furthermore, the laser sensor is arranged on a side of the second detection chamber close to the first detection chamber, and when the image acquisition device collects images of the pieces to be tested, the laser sensor is located between two pieces to be tested below the first detection chamber and the second detection chamber.

[0020] Furthermore, a sorting component is provided at the exit of the second inspection chamber, for removing unqualified products detected in the first inspection chamber and the second inspection chamber;

[0021] A second conveyor belt is provided below the first conveyor belt at a position corresponding to the second detection chamber, and the second conveyor belt is arranged perpendicular to the first conveyor belt;

[0022] The sorting assembly includes a rubber push plate, a second transverse linear module that supports and drives the first push rod group to move, and a third transverse linear module that supports and drives the second push rod group to move;

[0023] The first push rod group is arranged in the middle of the rubber push plate, the second push rod group is arranged at both ends of the rubber push plate, and the second transverse linear module is located above the third transverse linear module and is arranged parallel to each other;

[0024] The second transverse linear module and the third transverse linear module drive the first push rod group and the second push rod group to move alternately along the vertical transmission direction to transfer the cut pieces to be tested on the first conveyor belt below the second detection chamber to the second conveyor belt.

[0025] Further, the first push rod assembly includes a vertical plate fixed on the mid-vertical line of the rubber push plate, a first mounting plate arranged on the second transverse linear module, and a transition plate connecting the vertical plate and the first mounting plate;

[0026] An open groove is arranged at one end of the vertical plate connected to the rubber push plate, and the rubber push plate is embedded in the open groove and fixedly connected by bolts.

[0027] Furthermore, the second push rod group includes connecting arms fixed on both sides of the rubber push plate, a transverse plate arranged at one end of the two connecting arms away from the rubber push plate, and a force application plate arranged on the third transverse linear module;

[0028] The force plate includes a first plate body and a second plate body bent perpendicularly to the first plate body. The first plate body is fixed on the third transverse linear module, and the second plate body extends downward away from the end of the first plate body to form a bridging plate. The bridging plate is fixedly connected to the middle position of the transverse plate.

[0029] Furthermore, the detection box is also provided with an alarm device.

[0030] The present invention also provides a seat cushion cover indentation detection method, and the seat cushion cover indentation detection device used comprises the following steps:

[0031] In the first testing room, the image acquisition device acquires an image of the indentation area of ​​the three-dimensional pattern embossed pattern on the tested cut piece;

[0032] The measuring system analyzes the acquired image of the indentation area and determines the deviation value of the indentation pattern relative to the edge of the cut piece;

[0033] According to the deviation value determined by the measurement system, the laser sensor in the depth measurement device adjusts the position of the measurement point accordingly and moves the measurement point to a preset measurement position;

[0034] In the second detection room, the adjusted laser sensor detects the indentation depth along the preset measurement position of the three-dimensional pattern embossed pattern.

[0035] The beneficial effects of the present invention are as follows: the first detection chamber and the second detection chamber in the present invention realize staged detection of the imprinted pattern, the deviation value of the indentation area image is determined by the image acquisition device and the measurement system, and the depth measurement device adjusts the measurement point position of the laser sensor according to the deviation value, so that the measurement point is at the expected measurement position, effectively ensuring the accuracy of the indentation depth measurement.

[0036] The machine vision system and laser sensor, combined with the automated quality control system, can achieve real-time and accurate inspection to ensure that its integrity, position accuracy and imprint depth meet the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a front view of the seat cushion cover indentation detection device in an embodiment of the present invention;

[0039] Figure 2 It is an isometric view of a seat cushion cover indentation detection device in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the installation of the image acquisition device and the depth measurement device in the detection box in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of a laser sensor measuring a piece to be measured in an embodiment of the present invention;

[0042] Figure 5 It is a schematic diagram of an image acquisition device in an embodiment of the present invention performing image acquisition on a piece to be tested;

[0043] Figure 6 It is a structural schematic diagram of a sorting component in an embodiment of the present invention;

[0044] Figure 7 Schematic diagram of the structure of the first push rod group and the second push rod group in an embodiment of the present invention;

[0045] Figure 8 It is a schematic diagram of a first state in which the first push rod group and the second push rod act on the rubber push plate in an embodiment of the present invention;

[0046] Fig. 9 Schematic diagram of a second state in which the first push rod group and the second push rod act on the rubber push plate in an embodiment of the present invention.

[0047] Attached Figures: 01, piece to be tested; 1, workbench; 2, first conveyor belt; 3, inspection box; 31, first inspection room; 311, hanger; 32, second inspection room; 4, image acquisition device; 41, industrial camera; 42, lighting system; 5, depth measurement device; 51, laser sensor; 52, first transverse linear module; 53, first mounting frame; 6, sorting assembly; 61, rubber push plate; 62, second transverse linear module; 63, third transverse linear module; 64, first push rod group; 641, vertical plate; 642, first mounting plate; 643, transition plate; 65, second push rod group; 651, connecting arm; 652, transverse plate; 653, force plate; 7, second conveyor belt. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0051] like Figures 1 to 7 The seat cushion cover indentation detection device shown comprises: a workbench 1;

[0052] The conveying device is arranged on the upper surface of the workbench 1, and includes a first conveyor belt 2 for supporting and driving the cut piece 01 to be tested to move, and a detection box 3 erected above the first conveyor belt 2, and the detection box 3 is provided with a first detection chamber 31 and a second detection chamber 32 along the conveying direction;

[0053] An image acquisition device 4 is disposed in the first detection chamber 31 and is used to acquire an image of an indentation area of ​​the three-dimensional pattern embossed pattern on the cut piece 01 to be tested;

[0054] A measuring system, used for measuring the border width from the indentation area image to the edge of the cut piece 01 to be measured;

[0055] The depth measuring device 5 is arranged in the second detection chamber 32 and is used to measure the indentation depth of the three-dimensional pattern embossed pattern on the tested cut piece 01;

[0056] Among them, the depth measuring device 5 includes a laser sensor 51, and a first transverse linear module 52 that supports and drives the laser sensor 51 to move. The first transverse linear module 52 is horizontally arranged perpendicular to the transmission direction; the first transverse linear module 52 can adjust the position of the laser sensor 51 on the first transverse linear module 52 according to the measured indentation area image and the boundary width of the edge of the face cover, so that the laser sensor 51 can measure the indentation depth along the expected measurement position of the three-dimensional pattern embossing pattern.

[0057] The implementation process of the preferred embodiment of the present invention is as follows: the first conveyor belt 2 is started, and the cut pieces 01 to be tested fall onto the first conveyor belt 2 in the conveying state in turn, and are sent to the detection box 3 via the first conveyor belt 2. When the pieces 01 to be tested move to the acquisition position of the image acquisition device 4, the first conveyor belt 2 stops moving, and the image acquisition device 4 acquires the indentation area image of the three-dimensional pattern embossed pattern on the pieces 01 to be tested, thereby obtaining four boundary lines in the indentation area image. The measurement system calculates the boundary width with the edge of the pieces 01 to be tested according to the four boundary lines corresponding to the acquired indentation area image, and reads the expected measurement in the indentation area image. The position is measured, thereby obtaining the deviation value between the central axis of the tested piece 01 and the expected measurement position of the three-dimensional pattern embossed pattern; the first transverse linear module 52 adjusts the position of the laser sensor 51 on the transverse linear module according to the read deviation value, and at this time the first conveyor belt 2 is started. As the first conveyor belt 2 transfers the tested piece 01, the laser sensor 51 detects the indentation depth along the cross-sectional direction of the expected measurement position of the three-dimensional pattern embossed pattern. After the indentation depth detection is completed, the first conveyor belt 2 stops moving. At this time, the next tested piece 01 is located directly below the image acquisition device 4, and a new round of image acquisition begins.

[0058] The working principle of the laser sensor 51 is based on the laser triangulation method, which determines the height change of the object surface by measuring the position of the reflected light spot of the laser beam on the surface of the object to be measured. The laser beam emitted by the laser sensor 51 irradiates the indentation of the seat cover, and the reflected light is received by the photoelectric detector. According to the position change of the light spot on the detector, the depth of the indentation can be calculated.

[0059] In the present invention, the first detection chamber 31 and the second detection chamber 32 realize staged detection of the imprinted pattern, and the deviation value of the indentation area image is determined by the image acquisition device 4 and the measurement system. The depth measurement device 5 adjusts the measurement point position of the laser sensor 51 according to the deviation value, so that the measurement point is at the expected measurement position, which effectively ensures the accuracy of the indentation depth measurement.

[0060] In the present invention, detection windows are provided on the bottom surfaces of the first detection chamber 31 and the second detection chamber 32 facing the first conveyor belt 2; the design of the detection windows enables the image acquisition device 4 and the laser sensor 51 to perform detection without being interfered by other parts of the conveyor belt, thereby reducing the influence of external factors on the detection accuracy;

[0061] A vertically arranged hanger 311 is provided in the first inspection room 31, and the image acquisition device 4 is arranged at the lower end of the hanger 311, and the image of the three-dimensional pattern embossed pattern of the to-be-tested cutting piece 01 on the first conveyor belt 2 is acquired through the inspection window; by arranging the vertical hanger 311 in the first inspection room 31, it can be ensured that the image acquisition device 4 is aligned with the to-be-tested cutting piece 01 on the conveyor belt, and the image is acquired through the inspection window. Such a layout helps to improve the accuracy and clarity of image acquisition.

[0062] The first transverse linear module 52 is arranged below the second detection chamber 32 and in the frame gap between the second detection chamber 32 and the first conveyor belt 2. A first mounting frame 53 is arranged on the first transverse linear module 52. The first mounting frame 53 extends into the second detection chamber 32 through the detection window. The laser sensor 51 is arranged on the first mounting frame 53 to detect the indentation depth of the cut piece 01 to be tested during the conveying process. The position of the laser sensor 51 can be accurately controlled by the first transverse linear module 52 to ensure that the indentation depth is measured at the expected measurement position of the indentation pattern, thereby obtaining more accurate data.

[0063] In a preferred embodiment of the present invention, the image acquisition device 4 includes an industrial camera 41 and a lighting system 42 arranged directly below the industrial camera 41; the piece 01 to be tested is transmitted to directly below the industrial camera 41, and the piece 01 to be tested is located within the projection range of the lighting system 42 along the vertical direction.

[0064] The industrial camera 41 is fixed at the lower end of the hanger 311, and collects images of the cut pieces 01 to be tested on the conveyor belt through the detection window. This setting provides a stable image acquisition environment and reduces image blur caused by camera shake. The lighting system 42 is set directly below the industrial camera 41. Preferably, the lighting system 42 uses a ring light source or a dome light source. The industrial camera 41 is set on its central axis, which can provide uniform lighting, help reduce shadows and highlights, and effectively ensure image quality.

[0065] Using a high-resolution industrial camera 41 with an appropriate light source and lens can capture a clear image of the pattern. Through image processing algorithm analysis, it can be determined whether the pattern is complete and in the center, which helps to adjust the position of the measuring point. The use of a visual system can provide high-speed and high-accuracy detection, which is suitable for online detection and quality control.

[0066] In the present invention, the first conveyor belt 2 adopts intermittent transmission to sequentially convey the cut piece 01 to be tested to the acquisition position corresponding to the image acquisition device 4. During the transmission time between two image acquisitions, in order to ensure that the laser sensor 51 can synchronously complete the measurement of the indentation depth, preferably, the laser sensor 51 is arranged on the side of the second detection chamber 32 close to the first detection chamber 31. When the image acquisition device 4 performs image acquisition on the cut piece 01 to be tested, the laser sensor 51 is located between the two cut pieces 01 to be tested below the first detection chamber 31 and the second detection chamber 32.

[0067] When the first conveyor belt 2 conveys the piece to be tested 01 to the collection position corresponding to the image acquisition device 4 in the first detection chamber 31, the laser sensor 51 synchronously completes the indentation depth detection of the previous piece to be tested 01. At this time, there is a certain distance between the laser sensor 51 and the end edge of the previous piece to be tested 01, thereby effectively ensuring that the laser sensor 51 is always in a uniform feeding state when performing depth detection on the piece to be tested 01, reducing the measurement error caused by uneven movement of the piece and improving the detection accuracy.

[0068] In the preferred embodiment of the present invention, a sorting assembly 6 is provided at the exit of the second detection chamber 32, which is used to remove the unqualified products detected in the first detection chamber 31 and the second detection chamber 32; and a second conveyor belt 7 is provided below the first conveyor belt 2 at a position corresponding to the second detection chamber 32, and the second conveyor belt 7 is arranged perpendicular to the first conveyor belt 2; in order to ensure that the cut piece 01 to be tested can be smoothly transferred from the first conveyor belt 2 to the second conveyor belt 7, the sorting assembly 6 includes a rubber push plate 61, and a second transverse linear module 62 that supports and drives the first push rod group 64 to move, and a third transverse linear module 63 that supports and drives the second push rod group 65 to move; the first push rod group 64 is arranged in the middle position of the rubber push plate 61, the second push rod group 65 is arranged at both ends of the rubber push plate 61, and the second transverse linear module 62 is located above the third transverse linear module 63 and is arranged parallel to each other;

[0069] Among them, the second transverse linear module 62 and the third transverse linear module 63 drive the first push rod group 64 and the second push rod group 65 to move alternately along the vertical transmission direction to transfer the to-be-tested piece 01 located below the second detection chamber 32 on the first conveyor belt 2 to the second conveyor belt 7 .

[0070] When the boundary width from the indentation area image measured in the first detection chamber 31 to the edge of the to-be-tested piece 01 is greater than the set threshold, the first conveyor belt 2 performs intermittent feeding normally, and the first transverse linear module 52 does not operate, the laser sensor 51 does not detect the to-be-tested piece 01 transmitted through the detection area, and within the time of entering the next round of image acquisition, the third transverse linear module 63 drives the second push rod group 65 to start moving, so that the two ends of the rubber push plate 61 move toward the to-be-tested piece 01, at the same time, the second transverse linear module 62 moves synchronously, and moves at a speed less than the moving speed of the third transverse linear module 63, forming an inwardly concave push curved surface, when the rubber push plate 61 moves to a position close to the edge of the first conveyor belt 2, the third transverse linear module 63 stops operating, and the second transverse linear module 62 continues to drive the middle position of the rubber push plate 61 to move, forming an outwardly convex push curved surface, so as to push the to-be-tested piece 01 located in the area below the second detection chamber 32 onto the second conveyor belt 7;

[0071] When the border width is less than or equal to the set threshold, the first lateral movement module adjusts the measuring point position of the laser sensor 51 according to the deviation value to detect the indentation depth of the cut piece 01 to be tested entering the second detection chamber 32, and compares the measured indentation depth value with the reference value. When the error between the measured indentation depth value and the reference value is within the allowable range, it means that the indentation depth meets the requirements of the imprinting process. When the error exceeds the allowable range, such as Figure 8 , the third transverse linear module 63 drives the second push rod group 65 to start moving, so that the two ends of the rubber push plate 61 move toward the piece to be tested 01. At the same time, the second transverse linear module 62 moves synchronously and moves at a speed lower than the moving speed of the third transverse linear module 63 to form a concave push curved surface. When the rubber push plate 61 moves to the edge position close to the first conveyor belt 2, as shown in FIG. Fig. 9 As shown, the third transverse linear module 63 stops moving, and the second transverse linear module 62 continues to drive the middle position of the rubber push plate 61 to move, forming a convex push curved surface to push the to-be-tested piece 01 located in the area below the second detection chamber 32 onto the second conveyor belt 7. In the continuous detection process, the sorting assembly 6 can push the two sides of the first conveyor belt 2 alternately to avoid the phenomenon of empty travel.

[0072] As a preferred embodiment of the above, the first push rod assembly 64 includes a vertical plate 641 fixed on the mid-vertical line of the rubber push plate 61, a first mounting plate 642 arranged on the second transverse linear module 62, and a transition plate 643 connecting the vertical plate 641 and the first mounting plate 642; an open groove is provided at one end of the vertical plate 641 connected to the rubber push plate 61, and the rubber push plate 61 is embedded in the open groove and fixedly connected by bolts. The rubber push plate 61 is fixed by the open groove and bolts, so that the installation and adjustment of the push plate becomes simple and quick, and it is convenient for maintenance and replacement.

[0073] As a preferred embodiment of the above embodiment, the second push rod group 65 includes connecting arms 651 fixed on both sides of the rubber push plate 61, and a horizontal plate 652 arranged at one end of the two connecting arms 651 away from the rubber push plate 61, and a force plate 653 arranged on the third transverse linear module 63; the force plate 653 includes a first plate body and a second plate body bent perpendicularly to the first plate body, the first plate body is fixed on the third transverse linear module 63, and the end of the second plate body away from the first plate body extends downward to form a bridge plate, and the bridge plate is fixedly connected to the middle position of the horizontal plate 652.

[0074] The two connecting arms 651 and the cross plate 652 provide stable support for the rubber push plate 61 group, ensuring that the two ends of the rubber push plate 61 can move synchronously during the sorting process, and the bridge plate of the force plate 653 is fixedly connected to the middle position of the cross plate 652, so that the thrust can be evenly transmitted to the cross plate 652, thereby ensuring uniform force when pushing defective products. In addition, the two connecting arms 651 are fixed on the cross plate 652, and the length of the cross plate 652 is greater than the moving distance of the to-be-tested cut piece 01 in the second inspection chamber 32. By controlling the spacing between the two connecting arms 651, the rubber push plate 61 can completely cover the moving range of the to-be-tested cut piece 01, ensuring that defective products can be accurately removed no matter where they are located.

[0075] In another preferred embodiment, the detection box 3 is also provided with an alarm device. When unqualified products are continuously detected in the detection box 3, the stamping device is controlled to stop the stamping operation, and the stamping position or stamping depth is adjusted. Through timely alarm, problems in production can be quickly responded to and losses can be reduced.

[0076] The present invention also provides a seat cushion cover indentation detection method, which uses a seat cushion cover indentation detection device, including the following steps: in a first detection chamber 31, an image acquisition device 4 acquires an indentation area image of a three-dimensional pattern embossed pattern on a piece to be tested 01; this step is the basis of the detection process and provides necessary visual data for subsequent measurement and analysis.

[0077] The measurement system analyses the acquired image of the indentation area and determines the deviation of the indentation pattern relative to the edge of the piece; the measurement system can accurately identify the actual position of the indentation pattern and whether there is a centre offset.

[0078] According to the deviation value determined by the measurement system, the laser sensor 51 in the depth measurement device 5 adjusts the position of the measurement point accordingly and moves the measurement point to the preset measurement position; this adjustment ensures that the laser sensor 51 can be aligned with the actual center position of the indentation pattern, rather than the expected center position, thereby ensuring the accuracy of the indentation depth measurement.

[0079] In the second detection chamber 32, the adjusted laser sensor 51 detects the depth of the indentation along the preset measurement position of the three-dimensional pattern embossed pattern. The device usually includes a high-precision laser sensor 51, which can accurately measure the depth of the indentation.

[0080] The entire detection and adjustment process can be automated, which improves detection efficiency, reduces the need for manual operation, and also reduces errors caused by human factors.

[0081] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A seat cushion cover indentation detection device, characterized in that: include: Workbench; A conveying device, arranged on the upper surface of the workbench, comprising a first conveyor belt supporting and driving the cut piece to be tested to move, and a detection box erected above the first conveyor belt, wherein the detection box is provided with a first detection chamber and a second detection chamber along the conveying direction; An image acquisition device, arranged in the first detection chamber, for acquiring an image of an indentation area of ​​a three-dimensional pattern embossed on a piece to be tested; A measuring system for measuring the border width from the indentation area image to the edge of the piece to be measured; A depth measuring device, arranged in the second detection chamber, for measuring the indentation depth of the three-dimensional pattern embossed on the cut piece to be tested; Wherein, the depth measuring device comprises a laser sensor, and a first transverse linear module supporting and driving the laser sensor to move, wherein the first transverse linear module is horizontally arranged perpendicular to the conveying direction; The first lateral linear module can adjust the position of the laser sensor on the first lateral linear module according to the measured indentation area image and the boundary width of the edge of the face cover, so that the laser sensor measures the indentation depth along the expected measurement position of the three-dimensional pattern embossing pattern; A sorting component is provided at the exit of the second testing chamber, for removing unqualified products detected in the first testing chamber and the second testing chamber; A second conveyor belt is provided below the first conveyor belt at a position corresponding to the second detection chamber, and the second conveyor belt is arranged perpendicular to the first conveyor belt; The sorting assembly includes a rubber push plate, a second transverse linear module that supports and drives the first push rod group to move, and a third transverse linear module that supports and drives the second push rod group to move; The first push rod group is arranged in the middle of the rubber push plate, the second push rod group is arranged at both ends of the rubber push plate, and the second transverse linear module is located above the third transverse linear module and is arranged parallel to each other; The second transverse linear module and the third transverse linear module drive the first push rod group and the second push rod group to move alternately along the vertical transmission direction to transfer the cut pieces to be tested on the first conveyor belt below the second detection chamber to the second conveyor belt.

2. The seat cushion cover indentation detection device according to claim 1, characterized in that: Detection windows are provided on the bottom surfaces of the first detection chamber and the second detection chamber facing the first conveyor belt; A vertically arranged hanger is provided in the first inspection room, the image acquisition device is arranged at the lower end of the hanger, and the image of the three-dimensional pattern embossed pattern of the cut piece to be inspected on the first conveyor belt is collected through the inspection window; The first transverse linear module is arranged below the second detection chamber and is located in the frame gap between the second detection chamber and the first conveyor belt. A first mounting frame is provided on the first transverse linear module. The first mounting frame extends into the second detection chamber through the detection window. The laser sensor is arranged on the first mounting frame to perform indentation depth detection on the cut piece to be detected during the transmission process.

3. The seat cushion cover indentation detection device according to claim 1, characterized in that: The image acquisition device includes an industrial camera and a lighting system arranged directly below the industrial camera; The cut piece to be tested is conveyed to the position directly below the industrial camera, and is located within the projection range of the lighting system in the vertical direction.

4. The seat cushion cover indentation detection device according to claim 3, characterized in that: The lighting system adopts a ring light source or a dome light source.

5. The seat cushion cover indentation detection device according to claim 1, characterized in that: The laser sensor is arranged on a side of the second detection chamber close to the first detection chamber. When the image acquisition device collects images of the cut pieces to be detected, the laser sensor is located between two cut pieces to be detected below the first detection chamber and the second detection chamber.

6. The seat cushion cover indentation detection device according to claim 1, characterized in that: The first push rod assembly includes a vertical plate fixed on the mid-vertical line of the rubber push plate, a first mounting plate arranged on the second transverse linear module, and a transition plate connecting the vertical plate and the first mounting plate; An open groove is arranged at one end of the vertical plate connected to the rubber push plate, and the rubber push plate is embedded in the open groove and fixedly connected by bolts.

7. The seat cushion cover indentation detection device according to claim 1, characterized in that: The second push rod group includes connecting arms fixed on both sides of the rubber push plate, a transverse plate arranged at one end of the two connecting arms away from the rubber push plate, and a force application plate arranged on the third transverse linear module; The force plate includes a first plate body and a second plate body bent perpendicularly to the first plate body. The first plate body is fixed on the third transverse linear module, and the second plate body extends downward away from the end of the first plate body to form a bridging plate. The bridging plate is fixedly connected to the middle position of the transverse plate.

8. The seat cushion cover indentation detection device according to claim 1, characterized in that: The detection box is also provided with an alarm device.

9. A method for detecting indentations of a seat cushion cover, using the seat cushion cover indentation detection device according to any one of claims 1 to 8, characterized in that: The following steps are involved: In the first testing room, the image acquisition device acquires an image of an indentation area of ​​a three-dimensional pattern embossed on the piece to be tested; The measuring system analyzes the acquired indentation area image and determines the deviation value of the indentation pattern relative to the edge of the cut piece; According to the deviation value determined by the measurement system, the laser sensor in the depth measurement device adjusts the position of the measurement point accordingly and moves the measurement point to a preset measurement position; In the second detection chamber, the adjusted laser sensor detects the indentation depth along the preset measurement position of the three-dimensional pattern embossed pattern.

Images