A fixed-length plate detection structure for measuring the length of sealing strips
By using a fixed-length plate detection structure, pressure sensors and laser distance sensors are used to automatically measure the length of the sealing strip, solving the error problem caused by manual measurement and achieving high-precision sealing strip length detection.
Patent Information
- Application Number
- CN202522316958.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-17
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2036-09-17
AI Technical Summary
In existing technologies, the measurement of sealing strip length relies on manual operation, which leads to visual fatigue, reading deviation, and inconsistent measurement standards, resulting in inaccurate measurement results.
The system employs a fixed-length plate detection structure, which includes symmetrically arranged pads and gaskets. The fixed-length plate is fitted together, and the length of the sealing strip is automatically detected using pressure sensors and laser distance sensors. Combined with a preset length threshold and multiple distance sensors, the system ensures measurement accuracy.
It replaces manual visual readings, automatically determines whether the length of the sealing strip is qualified, avoids measurement errors, improves measurement accuracy, adapts to uneven sealing strip surfaces, and ensures measurement accuracy.
Smart Images

Figure CN224945370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measurement technology, specifically to a fixed-length plate detection structure for measuring the length of a sealing strip. Background Technology
[0002] In door frame production, the installation length of the sealing strip is one of the key parameters. It needs to be precisely matched with the door frame groove or glass pressure strip to ensure the sealing effect. Therefore, it is necessary to accurately measure the matching length of the sealing strip. Currently, all measurements are done manually. Due to visual fatigue, reading deviation, and inconsistent measurement benchmarks, the accuracy of manual operation fluctuates, resulting in inaccurate measurement results. Utility Model Content
[0003] The purpose of this invention is to provide a fixed-length plate detection structure for measuring the length of sealing strips, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixed-length plate detection structure for measuring the length of a sealing strip, comprising a first pad and a second pad symmetrically arranged, three gaskets evenly arranged between the first pad and the second pad, the first pad, the second pad, and the three gaskets all being disposed on a workbench, a fixed-length plate being fitted into the inner walls of the first pad, the second pad, and the three gaskets, the fixed-length plate having four grooves on its inner wall, a protective shell being fixedly mounted on the surface of the first pad, four pressure sensors being mounted on the inner wall of the protective shell, each pressure sensor corresponding to one groove, a clamping structure being fixedly mounted on one side of the surface of the first pad, the grooves on the surface of the fixed-length plate being shallower on the side closer to the pressure sensors, and a detection structure being mounted on the surface of the second pad, the detection structure being matched with the fixed-length plate.
[0005] Preferably, the clamping structure includes a bracket, which is fixedly mounted on one side of the surface of the first pad. A cylinder is fixedly mounted on the inner wall of the bracket, and a pressure plate is fixedly mounted on the piston rod end of the cylinder. The length of the pressure plate is greater than the width of the fixed length plate, and the pressure plate is located above the shallower side of the groove of the fixed length plate.
[0006] Preferably, the detection structure includes a housing, which is sleeved around the periphery of the length-fixing plate and fixedly mounted on the surface of the second pad. A support rod is fixedly mounted on the inner wall of the groove of the length-fixing plate, a spring is sleeved on the outer wall of the support rod, and a slider is sleeved on the end of the outer wall of the support rod. One end of the spring is connected to the slider, and the other end of the spring is connected to the inner wall of the groove of the length-fixing plate. A contour block is connected to the lower surface of the slider through a limiting plate. The limiting plate is slidably engaged with the inner wall of the groove of the length-fixing plate. A first distance sensor is fixedly mounted on the surface of the length-fixing plate, and the first distance sensor corresponds to the side end of the slider. A support groove is fixedly mounted on the inner wall of the groove of the length-fixing plate. Two slots are symmetrically arranged on the inner wall of the limiting plate. A pin is inserted into the inner wall of the support groove, and the pin is inserted into one of the slots on the inner wall of the limiting plate.
[0007] Preferably, it also includes multiple protrusion detection structures, which are evenly arranged on the lower end of the inner wall of the fixed-length plate; The protrusion detection structure includes a slide groove, which is opened at the lower end of the inner wall of the fixed-length plate. Three second distance sensors are slidably engaged with the inner wall of the slide groove, and the three second distance sensors can slide and adjust within the slide groove.
[0008] Compared with the prior art, the beneficial effects of this utility model are: 1. It replaces the traditional manual visual reading measurement method, solving the accuracy fluctuations caused by visual fatigue, reading deviation, and inconsistent measurement benchmarks in manual operation; 2. By setting a preset length threshold, the system automatically detects and determines whether the length of the sealing strip is qualified, thus solving problems such as lag and misjudgment in manual grading. 3. A pressure sensor is used at the starting point of the measurement to avoid measurement errors caused by the sealing strip not being placed in place; 4. A laser distance sensor is used at the measuring end. The laser shines on the plane of the back plate of the end slider to detect the actual length of the sealing strip, avoiding errors caused by directly measuring the uneven surface of the sealing strip with the laser. 5. Three distance sensors are installed in each groove of the measuring plate to avoid measurement errors caused by the protrusion in the middle of the sealing strip. Attached Figure Description
[0009] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 To inspect the top view of the structure; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5Schematic diagram of the assembly of the fixed-length plate and the protrusion detection structure.
[0010] In the diagram: 1-First pad, 2-Pad, 3-Length plate, 4-Protective shell, 5-Pressure sensor, 6-Pressure structure, 61-Bracket, 62-Cylinder, 63-Pressure plate, 7-Detection structure, 71-Shell, 72-Pin, 73-Support rod, 74-Spring, 75-Slider, 76-Limiting plate, 77-Shaped block, 78-Support groove, 79-First distance sensor, 8-Second pad, 9-Protrusion detection structure, 91-Slide groove, 92-Second distance sensor. Detailed Implementation
[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0012] Please see Figure 1-5 This utility model provides a fixed-length plate detection structure for measuring the length of a sealing strip, including a first pad 1 and a second pad 8 symmetrically arranged, three gaskets 2 evenly arranged between the first pad 1 and the second pad 8, the first pad 1, the second pad 8 and the three gaskets 2 are all set on a workbench, a fixed-length plate 3 is embedded in the inner wall of the first pad 1, the second pad 8 and the three gaskets 2, and four grooves are provided in the inner wall of the fixed-length plate 3. A protective shell 4 is fixedly mounted on the surface of the first pad 1, and four pressure sensors 5 are mounted on the inner wall of the protective shell 4. Each pressure sensor 5 corresponds to one groove. A pressing structure 6 is fixedly mounted on one side of the surface of the first pad 1. The grooves on the surface of the fixed-length plate are shallower on the side closer to the pressure sensor 5. A detection structure 7 is mounted on the surface of the second pad 8, and the detection structure 7 matches the fixed-length plate 3.
[0013] One end is the positioning end, and the other end is the detection end. The linear guide rail and the contour block realize indirect measurement. The protective shell 4 of the positioning end is open. The actual positioning relies on the pressure sensor 5 of the equipment. Different plate sizes represent different products. The groove of the fixed length plate 3 near the pressure sensor 5 is lowered to ensure that the cylinder 62 controls the pressure plate 63 to be in place and not move. In the detection structure 7, the first distance sensor 79 hits the slider 75 as an indirect stable detection. The preset spring 74 makes the contour block 77 make zero-contact contact when it contacts the extrusion strip to ensure accurate measurement. The position of the preset pin 72 is the standard value after insertion. The program calibration uses this as the reference point.
[0014] The clamping structure 6 includes a bracket 61, which is fixedly mounted on one side of the surface of the first pad 1. A cylinder 62 is fixedly mounted on the inner wall of the bracket 61. A pressure plate 63 is fixedly mounted on the piston rod end of the cylinder 62. The length of the pressure plate 63 is greater than the width of the fixed length plate 3, and the pressure plate 63 is located above the shallower side of the groove of the fixed length plate 3.
[0015] The slot of the fixed length plate 3 near the pressure sensor 5 is lowered to ensure that the cylinder 62 controls the pressure plate 63 in place and does not move. The bracket 61 ensures the stability of the cylinder 62 during use.
[0016] The detection structure 7 includes a housing 71, which is sleeved around the periphery of the length-fixing plate 3 and fixedly mounted on the surface of the second pad 8. A support rod 73 is fixedly mounted on the inner wall of the groove of the length-fixing plate 3. A spring 74 is sleeved on the outer wall of the support rod 73. A slider 75 is sleeved on the end of the outer wall of the support rod 73. One end of the spring 74 is connected to the slider 75, and the other end of the spring 74 is connected to the inner wall of the groove of the length-fixing plate 3. A contour block 77 is connected to the lower surface of the slider 75 through a limiting plate 76. The limiting plate 76 is slidably engaged with the inner wall of the groove of the length-fixing plate 3. A first distance sensor 79 is fixedly mounted on the surface of the length-fixing plate 3. The first distance sensor 79 corresponds to the side end of the slider 75. A support groove 78 is fixedly mounted on the inner wall of the groove of the length-fixing plate 3. Two slots are symmetrically arranged on the inner wall of the limiting plate 76. A pin 72 is inserted into the inner wall of the support groove 78. The pin 72 is inserted into one of the slots on the inner wall of the limiting plate 76.
[0017] In the detection structure 7, the first distance sensor 79 hits the slider 75 as an indirect stable detection. The preset spring 74 ensures that the contour block 77 makes zero-contact contact with the extrusion strip to ensure accurate measurement. The preset position of the pin 72 is used as the standard value after insertion, and the program calibration is based on this. First, the sealing strip is placed in the groove of the fixed length plate 3, and one end is pressed and adhered to the pressure sensor 5. At the same time, the other end is pushed by the spring 74 to drive the slider 75 to move the limiting plate 76 and the contour block 77 toward the sealing strip, fixing and pressing it in the fixed length plate 3. At this time, if the length of the sealing strip is compliant, the pin 72 can be inserted into a slot in the inner wall of the limiting plate 76 through the support groove 78. At the same time, the second distance sensor 79 shines a laser on the slider 75 to read and verify the measurement.
[0018] It also includes multiple protrusion detection structures 9, which are evenly arranged on the lower end of the inner wall of the fixed-length plate 3; The protrusion detection structure 9 includes a slide groove 91, which is opened at the lower end of the inner wall of the fixed length plate 3. Three second distance sensors 92 are slidably engaged on the inner wall of the slide groove 91. The three second distance sensors 92 can slide and adjust within the slide groove 91.
[0019] The reserved slot 91 in the plate ensures that the sensor of the equipment, namely the second distance sensor 92, can be fully exposed, ensuring that the straightness of the extruded strip can be detected without bending or warping.
[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fixed length plate detection structure for measuring the length of a sealing strip, characterized by: The device includes a first pad (1) and a second pad (8) arranged symmetrically. Three pads (2) are evenly arranged between the first pad (1) and the second pad (8). The first pad (1), the second pad (8), and the three pads (2) are all set on the workbench. A fixed-length plate (3) is fitted into the inner wall of the first pad (1), the second pad (8), and the three pads (2). The inner wall of the fixed-length plate (3) is provided with four grooves. A protective shell (4) is fixedly mounted on the surface of the first pad (1). Four pressure sensors (5) are mounted on the inner wall of the protective shell (4). Each pressure sensor (5) corresponds to a groove. A pressing structure (6) is fixedly mounted on one side of the surface of the first pad (1). The grooves on the surface of the fixed-length plate are shallower on the side closer to the pressure sensor (5). A detection structure (7) is mounted on the surface of the second pad (8). The detection structure (7) matches the fixed-length plate (3).
2. The fixed-length plate detection structure for measuring the length of a sealing strip according to claim 1, characterized in that: The pressing structure (6) includes a bracket (61), which is fixedly mounted on one side of the surface of the first pad (1). A cylinder (62) is fixedly mounted on the inner wall of the bracket (61). A pressure plate (63) is fixedly mounted on the piston rod end of the cylinder (62). The length of the pressure plate (63) is greater than the width of the fixed length plate (3), and the pressure plate (63) is located above the shallower side of the groove of the fixed length plate (3).
3. The fixed length plate detection structure for measuring the length of a sealing strip according to claim 1, wherein: The detection structure (7) includes a housing (71), which is sleeved around the periphery of the length-fixing plate (3) and fixedly mounted on the surface of the second pad (8). A support rod (73) is fixedly mounted on the inner wall of the groove of the length-fixing plate (3). A spring (74) is sleeved on the outer wall of the support rod (73). A slider (75) is sleeved on the outer end of the support rod (73). One end of the spring (74) is connected to the slider (75), and the other end of the spring (74) is connected to the inner wall of the groove of the length-fixing plate (3). The lower surface of the slider (75) is connected to the outer wall of the groove. The limiting plate (76) is connected to the contour block (77). The limiting plate (76) is slidably engaged with the inner wall of the groove of the fixed length plate (3). The surface of the fixed length plate (3) is fixedly equipped with a first distance sensor (79). The first distance sensor (79) corresponds to the side end of the slider (75). The inner wall of the groove of the fixed length plate (3) is fixedly equipped with a support groove (78). The inner wall of the limiting plate (76) is symmetrically provided with two slots. The inner wall of the support groove (78) is inserted with a pin (72). The pin (72) is inserted into one of the slots in the inner wall of the limiting plate (76).
4. The fixed length plate detection structure for measuring the length of a sealing strip according to claim 1, wherein: It also includes multiple protrusion detection structures (9), which are evenly arranged on the lower end of the inner wall of the fixed-length plate (3); The protrusion detection structure (9) includes a slide groove (91), which is located at the lower end of the inner wall of the fixed length plate (3). Three second distance sensors (92) are slidably connected to the inner wall of the slide groove (91), and the three second distance sensors (92) can slide and adjust within the slide groove (91).
