An on-line dynamic measuring device for product size

Abstract

The utility model belongs to the online measurement technical field, specifically disclose a kind of product size online dynamic measurement device, the utility model includes size adjusting mechanism and fine adjustment measuring mechanism;Size adjusting mechanism includes first guide rail, traction sheave, driven wheel, with the first motor of traction sheave fixed connection and control unit;Control unit is electrically connected with the first motor;Traction sheave and driven wheel are connected by belt, respectively vertically arranged in the both ends of first guide rail outside;Symmetrical load-bearing slide block group is slidably arranged on first guide rail;In the length direction of first guide rail, belt is fixedly connected with one load-bearing slide block group by connecting block on one side;On the other side, belt is fixedly connected with another load-bearing slide block group by connecting block;Two fine adjustment measuring mechanisms are respectively fixed on two load-bearing slide block groups.The utility model can adapt to different product size, realize the synchronous adjustment of sensor, improve the precision of measurement.The utility model is suitable for the measurement of product width size.

Description

Technical Field

[0001] This utility model belongs to the field of online measurement technology and relates to an online dynamic measurement device for product dimensions. Background Technology

[0002] In the field of industrial automation, the use of photoelectric sensors for non-contact measurement technology has become a core supporting means for modern intelligent manufacturing. It uses lasers to realize real-time detection of product parameters, which can avoid material damage caused by traditional contact measurement and significantly improve the quality control accuracy and operating efficiency of the production line.

[0003] However, in actual production processes, when the material width exceeds three to five meters, existing technical solutions face significant measurement bottlenecks: 1. Existing photoelectric measurement generally uses a single calibration plate. When measuring the width of materials of different widths, the production line needs to be stopped to replace the calibration plate, affecting efficiency and product qualification rate; 2. When measuring wide-width materials, it is generally necessary to set up a motor on each side of the material to control the photoelectric sensor. This makes it difficult to synchronize the movement of the two photoelectric sensors, resulting in insufficient accuracy of the measurement results. These technical barriers mean that online dynamic measurement of ultra-wide materials still suffers from key problems such as insufficient efficiency and inaccurate data, urgently requiring a new online dynamic dimensional measurement device. Summary of the Invention

[0004] The purpose of this invention is to provide an online dynamic measurement device for product dimensions. The two photoelectric sensors have both large-amplitude adjustment and small-amplitude fine adjustment capabilities, which can adapt to different product dimensions. Furthermore, during large-amplitude adjustment, a single motor can achieve synchronous adjustment of the two sensors, greatly improving the measurement accuracy.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An online dynamic measurement device for product dimensions includes a dimension adjustment mechanism and two fine-tuning measurement mechanisms for measuring product dimensions; The size adjustment mechanism includes a first guide rail, a traction wheel, a driven wheel, a first motor fixedly connected to the traction wheel, and a control unit; The signal output terminal of the control unit is connected to the signal input terminal of the first motor; The traction wheel and the driven wheel have the same diameter and are larger than the width of the first guide rail; The traction wheel and the driven wheel are respectively vertically installed at both ends of the first guide rail along its length, and are connected by a belt. A symmetrical load-bearing slider assembly is provided on the first guide rail; On one side of the first guide rail along its length, the belt is fixedly connected to a load-bearing slider assembly via a connecting block; on the other side of the first guide rail along its length, the belt is fixedly connected to another load-bearing slider assembly via a connecting block. The two fine-tuning measuring mechanisms are respectively fixed on two load-bearing slider groups.

[0006] As a limitation, each of the aforementioned fine-tuning measuring mechanisms includes a movable base plate, a movable support, a photoelectric sensor, a support plate with a slide rail, a load-bearing plate, and a drive assembly; The photoelectric sensor is fixed on the movable bracket, the movable bracket is fixed on the movable base plate, the movable base plate is slidably mounted on the support plate, the support plate is fixed on the load-bearing plate, and the load-bearing plate is fixed on the load-bearing slider assembly. The signal output terminal of the photoelectric sensor is connected to the signal input terminal of the control unit. The drive components are located at both ends of the support plate and are used to drive the movable bracket to slide.

[0007] As a further definition, the drive assembly includes two rotating wheels disposed at both ends of the support plate, a transmission belt sleeved on the two rotating wheels, and a second motor that drives the rotating wheels to rotate. The signal output terminal of the control unit is connected to the signal input terminal of the second motor; The two rotating wheels are horizontally fixed outside the two ends of the support plate, and the transmission belt passes through the movable base plate and is fixedly connected to the movable base plate.

[0008] As a further clarification, the second motor is a servo motor.

[0009] As a second limitation, the load-bearing slider assembly includes at least one load-bearing slider; The load-bearing slider has a fixing hole.

[0010] As a third limitation, two position sensors are provided on the first guide rail, located between the two load-bearing slider groups; The signal output terminals of the two position sensors are connected to the signal input terminals of the control unit.

[0011] As a fourth limitation, the first motor is a single-phase permanent magnet synchronous motor.

[0012] As a fifth limitation, the control unit includes a control circuit based on an STM32F407 series controller.

[0013] The technological advancements achieved by this invention compared to existing technologies, due to the adoption of the aforementioned technical solution, are as follows: (1) This utility model adopts the structure of belt-linked double-load-bearing slider group, which enables the two measuring mechanisms to achieve bidirectional synchronous movement through single motor drive, completely solving the asynchronous error problem caused by traditional dual motor control, making the device adaptable to the measurement needs of wider materials. At the same time, the two size adjustments of the size adjustment mechanism and the fine-tuning measuring mechanism enable this utility model to adapt to materials of various widths. When changing products, there is no need to stop the line, providing a high-precision and high-efficiency online measurement solution for ultra-wide materials. (2) In the fine-tuning measurement mechanism of this utility model, the photoelectric sensor and the rigid fixed support plate slide rail structure of the moving bracket enable the measuring head to achieve bidirectional fine-tuning in the plane of the load-bearing plate, effectively compensating for the measurement deviation caused by material edge burrs or fluctuations; the drive component independently controls the displacement of the moving base plate, so that the two measuring mechanisms on both sides can dynamically track the left and right edges of the material respectively, and can maintain measurement stability even when the material width changes abruptly or moves in a serpentine manner; the double fixed structure of the load-bearing plate and the load-bearing slider group not only reduces the interference of mechanical vibration on the photoelectric sensor, but also ensures the structural rigidity during large-span measurement through the distributed load-bearing design, and ensures the measurement accuracy during continuous operation; (3) In the drive assembly of this utility model, the symmetrical layout of the double wheels and the rigid connection of the transmission belt make the force on the moving base plate evenly distributed, eliminating the uneven wear caused by single-point drive and reducing mechanical transmission error; the structure of the direct drive wheel of the second motor simplifies the intermediate transmission link, and with the closed-loop feedback of the control unit, the movement response speed of the photoelectric sensor is improved, and it can track the instantaneous fluctuation of the material edge in real time; the fixed connection between the transmission belt and the moving base plate adopts a non-rigid buffer design, which not only ensures the transmission accuracy, but also effectively absorbs the vibration interference of the production line, further improving the measurement accuracy when the equipment is working continuously and improving the service life of the equipment; (4) The load-bearing slider group in this utility model adopts a modular fixing hole design. The overall load-bearing capacity is increased by more than 3 times through the parallel layout of multiple sliders. At the same time, the distributed force structure effectively suppresses the guide rail deformation during large-span measurement, so that the system can still maintain good flatness within a wide measurement range. Secondly, the standardized fixing hole design allows for quick disassembly and fine adjustment of the measuring mechanism, which improves the efficiency of production changeover. (5) The present invention adopts a dual position sensor symmetrical layout design on the first guide rail. By monitoring the relative displacement of the two load-bearing slider groups in real time, the control unit can dynamically compensate for the guide rail deformation caused by uneven material tension, thereby reducing the flatness error of the measurement system. The signal feedback of the position sensor and the data of the photoelectric sensor form a closed loop verification. When the displacement of the slider group exceeds the threshold, the system automatically triggers the second motor to make fine adjustments and corrections, thereby reducing the response delay of edge tracking.

[0014] This invention belongs to the field of online measurement technology. It has both large-amplitude adjustment and small-amplitude fine adjustment, which can adapt to different product sizes. Moreover, during large-amplitude adjustment, two sensors can be adjusted synchronously through a single motor, which greatly improves the measurement accuracy. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of section A in the middle; Figure 3 This is a schematic diagram of the size adjustment mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the connection relationship between the belt and the load-bearing slider in an embodiment of this utility model; Figure 5 This is a schematic diagram of signal relationship connections in an embodiment of this utility model.

[0017] In the diagram: 1. First guide rail, 2. Traction wheel, 3. Driven wheel, 4. Belt, 5. Load-bearing slider, 6. Connecting block, 7. Moving base plate, 8. Moving bracket, 9. Photoelectric sensor, 10. Support plate, 11. Load-bearing plate, 12. Rotary wheel, 13. Second motor, 14. Transmission belt, 15. Position sensor. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example

[0019] like Figures 1 to 5 As shown, this embodiment is an online dynamic measurement device for product dimensions, including a size adjustment mechanism and two fine-tuning measurement mechanisms for measuring product dimensions.

[0020] The size adjustment mechanism includes a first guide rail 1, a traction wheel 2, a driven wheel 3, a first motor fixedly connected to the traction wheel 2, and a control unit.

[0021] The traction wheel 2 and the driven wheel 3 are respectively vertically mounted at both ends of the first guide rail 1 along its length, and are connected by a belt 4. To ensure that the belt 4 does not contact the first guide rail 1, the diameters of the traction wheel 2 and the driven wheel 3 are the same and larger than the width of the first guide rail 1.

[0022] A symmetrical set of load-bearing sliders is slidably mounted on the first guide rail 1. In this embodiment, the load-bearing slider set includes two load-bearing sliders 5, and the number of load-bearing sliders 5 can be adjusted according to actual conditions, as long as at least one is provided. Each load-bearing slider 5 has four fixing holes for fixing the fine-tuning measuring mechanism.

[0023] On one side of the length direction of the first guide rail 1, the belt 4 is fixedly connected to two load-bearing sliders 5 of a load-bearing slider group via a connecting block 6; on the other side of the length direction of the first guide rail 1, the belt 4 is fixedly connected to two load-bearing sliders 5 of another load-bearing slider group via a connecting block 6.

[0024] A fine-tuning measuring mechanism is fixed on two load-bearing sliders 5 of a load-bearing slider assembly. This mechanism includes a movable base plate 7, a movable support 8, a photoelectric sensor 9, a support plate 10 with a slide rail, a load-bearing plate 11, and a drive assembly. The photoelectric sensor 9 is fixed to the movable support 8, which is fixed to the movable base plate 7. The movable base plate 7 is slidably mounted on the support plate 10, which is fixed to the load-bearing plate 11. The load-bearing plate 11 is fixed to the load-bearing sliders 5.

[0025] The drive assembly includes two rotating wheels 12 disposed at both ends of the support plate 10, a transmission belt 14 sleeved on the two rotating wheels 12, and a second motor 13 that drives the rotating wheels 12 to rotate. The two rotating wheels 12 are horizontally fixed at both ends of the support plate 10, and the transmission belt 14 passes through the movable base plate 7 and is fixedly connected to the movable base plate 7.

[0026] In this embodiment, two position sensors 15 are installed on the first guide rail 1, located between the two load-bearing slider groups. The signal output terminals of the two position sensors 15 are connected to the signal input terminal of the control unit. The signal output terminal of the control unit is connected to the signal input terminal of the first motor. The signal output terminal of the photoelectric sensor 9 is connected to the signal input terminal of the control unit; the signal output terminal of the control unit is connected to the signal input terminal of the second motor 13. In this embodiment, the control unit includes a control circuit based on an STM32F407 series controller, capable of transmitting relevant signals.

[0027] In this embodiment, the second motor 13 is a servo motor; the first motor is a single-phase permanent magnet synchronous motor with a coaxial encoder, which can effectively control the rotation of the traction wheel 2.

[0028] Before use, the position of the photoelectric sensor 9 is adjusted: the first motor rotates, driving the traction wheel 2 to rotate forward or backward, and the belt 4 drives the two photoelectric sensors 9 to move closer or further away; when the positions of the photoelectric sensors 9 are about the same, the second motor 13 on the two fine-tuning measuring mechanisms starts to rotate, driving the moving base plate 7 to slide, thereby completing the fine adjustment of the position of the photoelectric sensor 9.

[0029] In this embodiment, the control unit transmits control signals to the first motor and the second motor 13 in real time based on the signals transmitted by the photoelectric sensor 9 and the position sensor 15, so that the photoelectric sensor 9 can always track the edge of the material in real time and complete the measurement of the material size.

[0030] In summary, this embodiment can achieve both large-amplitude adjustment and small-amplitude fine-tuning of the position of photoelectric sensor 9, adapt to different product sizes, and during large-amplitude adjustments, a single motor can achieve synchronous adjustment of two sensors, greatly improving measurement accuracy.

Claims

1. A product dimension online dynamic measurement device, characterized in that, It includes a size adjustment mechanism and two fine-tuning measuring mechanisms for measuring product dimensions; The size adjustment mechanism includes a first guide rail, a traction wheel, a driven wheel, a first motor fixedly connected to the traction wheel, and a control unit; The signal output terminal of the control unit is connected to the signal input terminal of the first motor; The traction wheel and the driven wheel have the same diameter and are larger than the width of the first guide rail; The traction wheel and the driven wheel are respectively vertically installed at both ends of the first guide rail along its length, and are connected by a belt. A symmetrical load-bearing slider assembly is provided on the first guide rail; On one side of the first guide rail along its length, the belt is fixedly connected to a load-bearing slider assembly via a connecting block; on the other side of the first guide rail along its length, the belt is fixedly connected to another load-bearing slider assembly via a connecting block. The two fine-tuning measuring mechanisms are respectively fixed on two load-bearing slider groups.

2. The online dynamic measurement device for product dimensions according to claim 1, characterized in that, Each of the aforementioned fine-tuning measuring mechanisms includes a movable base plate, a movable support, a photoelectric sensor, a support plate equipped with a slide rail, a load-bearing plate, and a drive assembly; The photoelectric sensor is fixed on the movable bracket, the movable bracket is fixed on the movable base plate, the movable base plate is slidably mounted on the support plate, the support plate is fixed on the load-bearing plate, and the load-bearing plate is fixed on the load-bearing slider assembly. The signal output terminal of the photoelectric sensor is connected to the signal input terminal of the control unit. The drive components are located at both ends of the support plate and are used to drive the movable bracket to slide.

3. The online dynamic measurement device for product dimensions according to claim 2, characterized in that, The drive assembly includes two rotating wheels located at both ends of the support plate, a transmission belt sleeved on the two rotating wheels, and a second motor that drives the rotating wheels to rotate. The signal output terminal of the control unit is connected to the signal input terminal of the second motor; The two rotating wheels are horizontally fixed outside the two ends of the support plate, and the transmission belt passes through the movable base plate and is fixedly connected to the movable base plate.

4. The online dynamic measurement device for product dimensions according to claim 3, characterized in that, The second motor is a servo motor.

5. A product dimension online dynamic measurement device according to any one of claims 1 to 4, characterized in that, The load-bearing slider assembly includes at least one load-bearing slider; The load-bearing slider has a fixing hole.

6. A product dimension online dynamic measurement device according to any one of claims 1 to 4, characterized in that, On the first guide rail, two position sensors are provided between the two load-bearing slider groups; The signal output terminals of the two position sensors are connected to the signal input terminals of the control unit.

7. The online dynamic measurement device for product dimensions according to claim 5, characterized in that, Two position sensors are installed on the first guide rail, between the two load-bearing slider groups; The signal output terminals of the two position sensors are connected to the signal input terminals of the control unit.

8. A product dimension online dynamic measurement device according to any one of claims 1, 2, 3, 4 or 7, characterized in that, The first motor is a single-phase permanent magnet synchronous motor.

9. A product dimension online dynamic measurement device according to any one of claims 1, 2, 3, 4 or 7, characterized in that, The control unit includes a control circuit based on an STM32F407 series controller.

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