Detection device applied to pressure welding process

Abstract

The utility model discloses a detection device applied to a pressure welding process, which relates to the technical field of detection equipment and comprises a bottom plate, a workpiece supporting platform and a supporting vertical plate are fixedly arranged on the bottom plate, a welding spot detection device is arranged on the supporting vertical plate, and the welding spot detection device is higher than the upper end face of the workpiece supporting platform. The welding spot detection device comprises a linear driving device and a linear guide rail, a sliding block slides on the linear guide rail, a detection meter fixing seat is arranged on the sliding block, and a dial indicator is installed in a clamping groove of the detection meter fixing seat; when a workpiece to be detected is placed on the workpiece supporting platform, a detection probe at the lower end of the dial indicator abuts against the end face of the workpiece to be detected and is driven by the linear driving device to slide along the linear guide rail. Therefore, by arranging the sliding seat sliding along the linear guide rail, the dial indicator is driven to move, errors caused by human intervention are reduced, the detection speed is improved, and the accuracy of a measurement result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a detection device applied to a pressure welding process. Background Art

[0002] In the field of modern machinery manufacturing, pressure welding is increasingly used in welding. In particular, the spot welding process within pressure welding can effectively reduce workpiece deformation, reduce welding spatter and slag, and significantly improve the appearance quality of the product. After welding, to ensure the weld quality, it is necessary to inspect the weld spot, especially for thin-walled workpieces such as hoods, to avoid welds that are too deep or too shallow, which will affect the weld quality of the workpiece.

[0003] Currently, weld depth inspection often relies on manual measurement using a depth gauge. According to pressure welding standards, the depth of a spot weld indentation must not exceed 20% of the welded plate thickness, placing high demands on measurement accuracy. Manual use of a depth gauge can introduce errors, especially for irregular welds. Reading errors, coupled with the shaking caused by holding the depth gauge, can lead to significant deviations between the measured data and the actual data. This makes it impossible to effectively monitor the actual indentation depth of the spot weld, hindering inspection quality and making it impossible to compile statistics for multiple inspection results. Because weld depth must remain within a certain tolerance, the inspection worker's computational skills and concentration are critical. Even with a digital depth gauge, frequent repeated measurements can still lead to inaccurate results due to fatigue and mental strain. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the purpose of the present utility model is to provide a detection device applied to the pressure welding process, which drives the micrometer to move by setting a slide that slides along a linear guide rail, thereby reducing the error caused by human intervention, improving the detection speed, and ensuring the accuracy of the measurement results.

[0005] In order to achieve the above-mentioned object, the utility model provides a detection device for use in a pressure welding process, characterized in that it includes a base plate, a workpiece support platform and a support vertical plate are fixedly provided on the base plate, a weld point detection device is provided on the support vertical plate, and the weld point detection device is higher than the upper end surface of the workpiece support platform;

[0006] The solder joint detection device includes a linear drive device and a linear guide rail, a slider slides on the linear guide rail, a detection meter fixing seat is provided on the slider, and a micrometer is installed in the card slot of the detection meter fixing seat;

[0007] When a workpiece to be inspected is placed on the workpiece supporting platform, the inspection probe at the lower end of the micrometer abuts against the end surface of the workpiece to be inspected and slides along the linear guide rail driven by the linear drive device.

[0008] Preferably, the supporting vertical plate is further provided with a limit baffle, and the limit baffle is located at both ends of the linear guide rail and fixedly connected to the vertical plate.

[0009] Preferably, the linear drive device is a linear electric cylinder, the slider is provided with a vertically upward driving rod, and the motor shaft of the linear electric cylinder is fixedly connected to the driving rod.

[0010] Preferably, the support plate is further provided with a position detection unit, the position detection unit includes a position sensor, the position sensor is fixedly connected to the support plate via an adjustment seat, and the position sensor is located at the front end of the moving direction of the slider.

[0011] Preferably, the workpiece supporting platform is provided with a limiting groove for placing the workpiece to be inspected, and the workpiece supporting platform is embedded with an electromagnet for fixing the workpiece to be inspected.

[0012] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:

[0013] 1. Since a linear guide rail is provided on the supporting vertical plate, a slider slides on the linear guide rail, and the dial indicator is fixedly connected to the slider through the detection gauge fixing seat. When the slider moves along the linear guide rail, the bottom of the dial indicator can detect the welding position on the workpiece to be inspected. The fixed position of the dial indicator is fixed, so when the detection probe below moves, it can ensure that the error of the detection result is within the same range, and there will be no deflection due to irregular welding points, which makes the detection result more accurate and avoids errors caused by human operation.

[0014] 2. Since a linear electric cylinder is set as a linear drive device, combined with a position sensor in the direction of movement of the slider, the movement time and distance can be directly controlled through the control system, with a higher degree of automation. It is suitable for batch testing of workpieces of the same specification to be tested and assembly line operations. The test results can be statistically analyzed intuitively by a computer to determine whether the welding equipment meets the design requirements and whether it needs maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the detection device of the utility model applied to the pressure welding process;

[0016] Figure 2 This is a reference diagram of the actual use state of the utility model;

[0017] In the figure,

[0018] 1. Bottom plate; 11. Supporting vertical plate; 12. Limit baffle;

[0019] 2. Workpiece support platform; 21. Workpiece to be inspected;

[0020] 3. Welding spot detection device; 31. Linear electric cylinder; 32. Linear guide rail; 33. Slider; 34. Test gauge fixing seat; 35. Micrometer;

[0021] 4. Position detection unit; 41. Position sensor; 42. Adjustment seat;

[0022] 5. Workbench; 51. Display screen; 52. Electric control box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] See also Figure 1 、 Figure 2 The present invention provides a detection device for pressure welding process, comprising a base plate 1, on which a workpiece support platform 2 and a support vertical plate 11 are fixedly provided, and a weld spot detection device 3 is provided on the support vertical plate 11, and the weld spot detection device 3 is higher than the upper end surface of the workpiece support platform 2; when in use, a workpiece 21 to be detected is generally placed on the workpiece support platform 2. Since the material of most welded workpieces is iron, an electromagnet can be used to temporarily fix the workpiece 21 to be detected. In addition to using an electromagnet, a clamp can also be used to fix the workpiece 21 to be detected, ensuring that the position and height of the workpiece 21 to be detected are consistent each time it is fixed, thereby reducing the influence of other errors.

[0025] The weld spot detection device 3 includes a linear drive device and a linear guide rail 32. A slider 33 is fixed to the linear guide rail 32. A test gauge fixing seat 34 is provided on the slider 33. A micrometer 35 is installed in the slot of the test gauge fixing seat 34. When a workpiece 21 to be tested is placed on the workpiece support platform 2, the detection probe at the lower end of the micrometer 35 contacts the end face of the workpiece 21 to be tested and slides along the linear guide rail 32 driven by the linear drive device. In actual use, if the number of workpieces 21 to be tested is very small, the linear drive device can be omitted and the position of the slider 33 can be manually adjusted to observe the test results. Installing a linear drive device helps to achieve automatic control and is suitable for assisting batch testing on production lines. Figure 2Referring to the diagram of the usage state, the base plate 1 of the present invention is first placed on the workbench 5, and then the dial indicator 35 and the linear drive device are adjusted and connected to the electric control box 52. The control system in the electric control box 52 controls the operating speed and movement distance of the dial indicator 35. The display screen 51 can intuitively observe and judge the depth distance of the weld. According to the actual detection situation, the detection gauge fixing seat 34 is adjusted, and then the height and position of the dial indicator 35 are adjusted. The control system is an auxiliary control means, using a computer as a carrier to compile statistical measurement data and control the detection time. The method of connecting the present invention with a control system and realizing control is a prior art method.

[0026] The support upright plate 11 of the present invention is further provided with a limit baffle 12, which is located at both ends of the linear guide rail 32 and is fixedly connected to the upright plate. The two limit baffles 12 limit the terminal position of the slider 33 to prevent it from falling.

[0027] The linear drive device of the present invention is a linear electric cylinder 31. A vertically upward drive rod is provided on a slider 33, which is used to fix the drive rod to the piston rod of the linear electric cylinder 31. The linear electric cylinder 31, also known as a linear motor, pushes the test gauge fixing base 34 to perform linear motion through the vertically upward drive rod. The lower end of the micrometer 35 will be attached to the end face of the workpiece 21 to be inspected. There will be a groove at the welding part. The runout value of the micrometer 35 is used to determine whether the weld part meets the design requirements. Generally, a numerical range is pre-set. When the runout range or the displayed numerical range of the micrometer 35 does not meet the set requirements, an alarm device (not shown in the figure) will sound an alarm, notifying the operator that the workpiece 21 to be inspected does not meet the requirements. If the welding meets the design requirements, no alarm will be sounded. This process is particularly suitable for batch testing.

[0028] The support plate 11 of the present invention is also provided with a position detection unit 4, which includes a position sensor 41. The position sensor 41 is fixedly connected to the support plate 11 through an adjustment seat 42. The position sensor 41 is located at the front end of the travel direction of the slider 33. The adjustment seat 42 is used to adjust the height and position of the position sensor 41. The position sensor 41 is a prior art. After directly purchasing the electronic component, it can be connected to the control system. The position sensor 41 of the present invention needs to be used in conjunction with the linear electric cylinder 31. It is mainly used to detect and control the driving time of the linear electric cylinder 31, and then control the sliding distance of the slider 33 to ensure that the moving distance of the micrometer 35 exceeds the position of the weld point. During the movement, the micrometer 35 can record the runout value. For weld points that meet the design requirements, no alarm will be issued. If the deviation value is large, it means that the product is unqualified. After multiple measurements, the data will be summarized. The parameters of the trace equipment can be appropriately adjusted according to the depth of the weld point.

[0029] The workpiece support platform 2 of the present invention is provided with a limit groove for placing the workpiece 21 to be detected, and the workpiece support platform 2 is embedded with an electromagnet for fixing the workpiece 21 to be detected. The limit groove and the electromagnet are used to temporarily fix the workpiece to be detected to reduce external errors.

[0030] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A detection device used in pressure welding process, characterized in that: It includes a bottom plate, on which a workpiece support platform and a support vertical plate are fixedly provided, and a welding point detection device is provided on the support vertical plate, and the welding point detection device is higher than the upper end surface of the workpiece support platform; The solder joint detection device includes a linear drive device and a linear guide rail, a slider slides on the linear guide rail, a detection meter fixing seat is provided on the slider, and a micrometer is installed in the card slot of the detection meter fixing seat; When a workpiece to be inspected is placed on the workpiece supporting platform, the inspection probe at the lower end of the micrometer abuts against the end surface of the workpiece to be inspected and slides along the linear guide rail driven by the linear drive device.

2. The detection device for pressure welding process according to claim 1, characterized in that: The supporting vertical plate is further provided with a limit baffle, which is located at both ends of the linear guide rail and fixedly connected to the vertical plate.

3. The detection device for pressure welding process according to claim 2, characterized in that: The linear drive device is a linear electric cylinder. The slider is provided with a vertically upward driving rod. The motor shaft of the linear electric cylinder is fixedly connected to the driving rod.

4. The detection device for pressure welding process according to claim 1, characterized in that: The support plate is further provided with a position detection unit, which includes a position sensor. The position sensor is fixedly connected to the support plate via an adjustment seat, and the position sensor is located at the front end of the moving direction of the slider.

5. The detection device for pressure welding process according to claim 4, characterized in that: The workpiece supporting platform is provided with a limiting groove for placing the workpiece to be detected, and the workpiece supporting platform is embedded with an electromagnet for fixing the workpiece to be detected.

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