Detection tool for exhaust pipe straight pipe end cover before welding

Abstract

The utility model discloses an exhaust pipe straight pipe end cover pre-welding detection tool which comprises a detection bottom plate, a material placing column is arranged on the detection bottom plate and used for being connected with an exhaust pipe straight pipe in a sleeved mode, a sensor support is arranged on one side of the material placing column, an adjustable hole site identification sensor is arranged on the sensor support, and the hole site identification sensor is connected with the material placing column in a sleeved mode. The hole site recognition sensor is used for detecting an exhaust pipe straight pipe arranged on the material containing column in a sleeving mode. According to the detection tool, through the arrangement of the material placing column, the sensor support and the hole site identification sensor on the sensor support, the direction of the exhaust pipe straight pipe can be rapidly detected before the exhaust pipe straight pipe and the end cover are welded, and the situation that the end cover covers the wrong end of the exhaust pipe straight pipe and is welded is avoided; not only can the effects of preventing and correcting errors before welding be achieved, but also the detection efficiency can be improved, and the burden of manual inspection can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile exhaust pipe production, specifically relates to a detection tool before exhaust pipe straight pipe end cover welding. BACKGROUND

[0002] Exhaust pipe is a very important part of automobile exhaust system, because of the different position of setting and installation, its type is also more, in the process of exhaust pipe production, the straight pipe with hole is used, such as the straight pipe with hole in the accompanying drawings Figure 1 The straight pipe with hole is made of metal sheet through stamping (punching) and rolling, and then an end cover needs to be welded at one end. The number and position of the holes punched at both ends of the exhaust pipe straight pipe are different, and the end cover needs to be welded only at one end. If the welded end is reversed, unqualified products will be produced.

[0003] If manual feeding is used, the correct end for welding can be determined by manual operation. This method consumes more manpower, and workers are also prone to negligence after long-term work, resulting in incorrect welding of the end cover. If the robot is used for automatic feeding, a simple and low-cost automatic detection and recognition device is needed to assist the robot in feeding. SUMMARY

[0004] The utility model aims at the problems existing in the prior art, and provides a detection tool before exhaust pipe straight pipe end cover welding.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] The detection tool before exhaust pipe straight pipe end cover welding comprises a detection bottom plate, a material placing column is arranged on the detection bottom plate, the material placing column is used for sleeving the exhaust pipe straight pipe, a sensor support is arranged on one side of the material placing column, an adjustable hole position recognition sensor is arranged on the sensor support, and the hole position recognition sensor is used for detecting the exhaust pipe straight pipe sleeved on the material placing column.

[0007] The detection tool can quickly detect the direction of the exhaust pipe straight pipe before the exhaust pipe straight pipe and the end cover are welded, so that the end cover is not welded on the wrong end of the exhaust pipe straight pipe. The detection tool not only can prevent and correct mistakes before welding, but also can improve the detection efficiency and reduce the burden of manual inspection.

[0008] The sensor support can be connected to support the hole position recognition sensor and can be arranged at different height positions to adapt to the pipe hole positions to be recognized; the hole position recognition sensor can also adjust the distance between the end and the outer periphery of the material placing column to adapt to the detection of exhaust pipes of different diameters and can effectively perform the detection.

[0009] Further, the height of the sensor support is lower than the height of the material placing column, which can avoid the influence of the sensor support on the placement or welding of the end cover; the sensor support is spaced apart from the central axis of the material placing column by 10-25 cm, so that the hole position recognition sensor has a certain horizontal adjustment space.

[0010] Further, the sensor support is provided with a vertical clamping groove connected to the hole position recognition sensor, and the hole position recognition sensor can be adjusted in height along the vertical clamping groove, and then fastened by two nuts to maintain it at a certain height position.

[0011] Further, the sensor support is provided with vertical height scale marks to accurately and quickly adjust the height position of the hole position recognition sensor.

[0012] Further, the hole position recognition sensor is an optical sensor with an outer thread, and the optical sensor is fixed to the sensor support by a plurality of nuts, and the optical sensor can be a mature product available on the market.

[0013] Further, the material placing column is a cylindrical body, and the outer periphery of the end portion is provided with a circular arc chamfer.

[0014] Further, the bottom of the material placing column is provided with a connecting hole, and the detection base plate is provided with a screw rod or a limiting column, and the screw rod or the limiting column is connected to the connecting hole, so that the material placing column can be replaced to adapt to the detection of exhaust pipes of different diameters.

[0015] In some embodiments, the detection base plate is provided with a pair of material placing columns, and each of the material placing columns is provided with a sensor support on one side.

[0016] Further, the detection base plate is horizontally placed on the workbench, or the detection base plate is inclinedly arranged on the workbench.

[0017] Further, the inclination angle of the detection base plate is 15-40°, and the bottom of one side of the detection base plate is provided with a supporting surface, and the bottom of the other side is provided with a supporting column.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This testing fixture, through the setting of the material placement column, the sensor bracket, and the hole position recognition sensor on it, can quickly detect the direction of the exhaust pipe straight pipe before welding it to the end cap, avoiding the end cap being placed on the wrong end of the exhaust pipe straight pipe and thus being welded. This not only plays a role in preventing and correcting errors before welding, but also improves testing efficiency and reduces the burden of manual inspection; 2. This testing fixture also has the characteristics of simple structure, easy installation and use, and the entire fixture is easy to manufacture and has a low cost; 3. The setting of the sensor bracket can connect and support the hole position recognition sensor, and can allow the hole position recognition sensor to be set at different height positions to adapt to the position of the pipe hole to be identified; the hole position recognition sensor can also adjust the distance of its end from the outer periphery of the material placement column to adapt to the detection of exhaust pipe straight pipes of different diameters; 4. The setting of the two sets of the material placement column and the sensor bracket allows this testing fixture to complete the end cap placement operation and even the welding operation at the same time as the testing, improving the efficiency of testing and welding. Attached Figure Description

[0019] Figure 1 A schematic diagram of the exhaust pipe straight pipe and the end cap to be welded;

[0020] Figure 2 This is a schematic diagram of the overall structure of a pre-welding inspection fixture for a straight exhaust pipe end cap according to the present invention.

[0021] Figure 3 This is a side view of the sensor bracket of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection between the material placement column and the detection base plate of this utility model;

[0023] Figure 5 This is a schematic diagram of another structure for connecting the material placement column and the detection base plate of this utility model;

[0024] Figure 6 This is a schematic diagram showing the straight exhaust pipe of this utility model being tested on a testing fixture;

[0025] Figure 7 This is a schematic diagram of another arrangement of the inspection fixture for the straight pipe end cap of the exhaust pipe according to this utility model;

[0026] In the diagram: 1. Exhaust pipe straight pipe; 2. End cap; 3. Pipe hole; 4. Detection base plate; 5. Material placement column; 6. Sensor bracket; 7. Hole position recognition sensor; 8. Nut; 9. Vertical slot; 10. Height scale mark; 11. Connection hole; 12. Screw; 13. Limiting column; 14. Support surface; 15. Support column. Detailed Implementation

[0027] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance. Embodiment 1

[0029] As shown in Figure 2 and Figure 3 A detection tool before welding of a straight pipe end cover of an exhaust pipe, comprising a detection base plate 4, a material placing column 5 is arranged on the detection base plate 4, the material placing column 5 is used for sleeving an exhaust pipe straight pipe 1, a sensor support 6 is arranged on one side of the material placing column 5, an adjustable hole position recognition sensor 7 is arranged on the sensor support 6, and the hole position recognition sensor 7 is used for detecting the exhaust pipe straight pipe sleeved on the material placing column 5.

[0030] The detection tool can quickly detect the direction of the exhaust pipe straight pipe 1 before the exhaust pipe straight pipe 1 and the end cover 2 are welded, avoid the end cover 2 being welded on the wrong end of the exhaust pipe straight pipe 1, not only can play the role of pre-welding error prevention and correction, but also can improve the detection efficiency and reduce the burden of manual inspection. The detection tool also has the characteristics of simple structure, easy installation and use, and the whole tool is easy to manufacture and has low cost.

[0031] The exhaust pipe straight pipe 1 to be welded is sleeved on the material placing column 5, the hole position recognition sensor 7 on the sensor support 6 can recognize and judge the pipe hole on the exhaust pipe straight pipe 1, according to the position of the pipe hole, whether the exhaust pipe straight pipe is reversed can be quickly judged, if it is reversed, it is taken down and adjusted to the rear and then sleeved, if it is not reversed, the end cover can be covered on the exhaust pipe straight pipe, and then welding operation is performed.

[0032] The sensor support 6 can be connected to support the hole position recognition sensor 7, and the hole position recognition sensor 7 can be arranged at different height positions to adapt to the pipe hole positions to be recognized; the hole position recognition sensor 7 can also adjust the distance between the end thereof and the outer periphery of the material placing column to adapt to the detection of exhaust pipes of different diameters, so that the detection can be more effective.

[0033] For the robot feeding, the detection tool can assist the robot to feed accurately without human intervention, can judge and correct itself, and does not need to set a material recognition system with complex structure and higher cost. For manual feeding, the labor intensity of workers can be reduced, and feeding errors caused by human negligence or fatigue can be avoided. In practice, the detection tool is more suitable for use with a feeding robot.

[0034] Further, the height of the sensor support 6 is lower than the height of the material placing column 5, so that the sensor support 6 does not affect the placement or welding of the end cover.

[0035] The sensor support 6 is arranged at a distance of 10-25 cm from the central axis of the material placing column 5, and the center line of the sensor support 6 is parallel to the central axis of the material placing column 5 and arranged at a position in the middle of the side surface. A distance of several centimeters is provided between the sensor support 6 and the outer periphery of the material placing column 5, so that the hole position recognition sensor has a horizontal adjustment space.

[0036] Further, the hole position recognition sensor 7 is an optical sensor with external threads, and the optical sensor is fixed to the sensor support 6 by a plurality of nuts 8.

[0037] The optical sensor with external threads can be conveniently arranged in the sensor support, adjusted according to the different extension distances, and then fixed by two nuts on the sides, which is very convenient to use. In this way, the signal lines of the optical sensors are connected to the same upper computer or PLC controller, which can receive the detection signals. If there is a pipe hole on the outer periphery of the exhaust pipe, the optical sensor can recognize it, and if there is no pipe hole, the outer periphery of the pipe wall will block the light, so that it can be determined that there is no hole. In the embodiment, the optical sensor can be a micro laser sensor produced by Xinshe Electrical.

[0038] Specifically, the sensor support 6 is provided with a vertical clamping groove 9, and the vertical clamping groove 9 is connected to the hole position recognition sensor 7. The hole position recognition sensor 7 can be adjusted in height along the vertical clamping groove 9, and then fastened by two nuts 8 to maintain it at a certain height position.

[0039] The hole position recognition sensor 7 can identify whether the exhaust pipe straight pipe is reversed because the hole positions at both ends of the exhaust pipe straight pipe are obviously different, one end is provided with only one circle of pipe holes, and the other end is provided with several circles of pipe holes, and the distances of the pipe holes from the end are not the same. Only the height of the hole position recognition sensor is set at the height of a certain circle of pipe holes, and the judgment can be made. For example, in practice, an end cover needs to be arranged at the end provided with one circle of pipe holes, and the distance of this circle of pipe holes from the upper end is 4 cm. At this time, any circle of pipe holes in the several circles of pipe holes of the other end, which is not 4 cm away from the lower end, is selected as the detection height, for example, the pipe hole 7 cm away from the lower end is used as the detection position, and the hole position recognition sensor is arranged at the height of 7 cm. When the exhaust pipe straight pipe of this type is arranged on the material placing column, the hole position recognition sensor can identify that there is a pipe hole at this position, and then the exhaust pipe straight pipe is not reversed.

[0040] Since the height position is determined, the position of the hole position recognition sensor is relatively fixed. In order to avoid that the hole position recognition sensor is just aligned with the pipe wall between adjacent pipe holes (the width of the pipe wall between adjacent pipe holes is less than the diameter of the pipe hole), the exhaust pipe straight pipe can be rotated or inserted in the specified direction when being placed. If there is a pipe hole, the signal detected by the hole position recognition sensor changes and fluctuates. If it is a whole circle of pipe wall (when reversed), no matter how the exhaust pipe straight pipe is rotated, the hole position recognition sensor is always directed to the pipe wall, and the detected signal does not change much.

[0041] Further, the sensor support 6 is provided with vertical height scale marks 10, so that the height value can be directly read, and the height position of the hole position recognition sensor 7 can be accurately and quickly adjusted.

[0042] Further, the material placing column 5 is a cylindrical body, and the outer periphery of the end portion is provided with a circular arc chamfer, which facilitates the insertion of the exhaust pipe straight pipe and avoids the damage to the exhaust pipe straight pipe caused by the right angle.

[0043] Further, as shown in Figure 4 The bottom of the material placing column 5 is provided with a connecting hole 11, and the detection base plate 4 is provided with a screw rod 12. At this time, the connecting hole 11 is a screw hole, and the material placing column is connected and installed by the threaded connection.

[0044] Alternatively, as shown in Figure 5 The detection base plate 4 is provided with a limiting column 13. At this time, the connecting hole 11 is a limiting hole, and the connection is achieved by insertion. The limiting column 13 is provided with a non-circular cross section, preferably a polygonal cross section, so that the material placing column 5 cannot rotate relative to the detection base plate 4 after connection.

[0045] Through the above two connection modes, the material placing column 5 is very convenient to install and disassemble, and different thicknesses of the material placing column can be selected according to the inner diameter of the different exhaust pipe straight pipes, so that the application range of the whole detection tool can be improved. Embodiment 2

[0046] The difference between the embodiment and the embodiment 1 is that the detection base plate 4 is provided with a pair of material placing columns 5, and each of the material placing columns 5 is provided with a sensor support 6 on one side.

[0047] In combination Figure 6 As shown in the figure, the arrangement of the two groups of material placing columns 5 and sensor supports 6 can make the detection tool complete the placement operation of the end cover and the welding operation at the same time. When an exhaust pipe straight pipe is sleeved on the material placing column and is detected to be qualified, the end cover can be placed on the exhaust pipe straight pipe and welded, and at the same time, the next exhaust pipe straight pipe is sleeved on the other material placing column for detection. Such a cycle operation can be carried out in batches to detect and weld the exhaust pipe straight pipe, thereby improving the detection and welding efficiency. Embodiment 3

[0048] The difference between the embodiment and the embodiment 2 is that the detection base plate 4 is arranged obliquely on the working platform, as shown in the figure. Figure 7 The inclination angle of the detection base plate 4 is about 25°, and the bottom of one side of the detection base plate 4 is provided with a supporting surface 14, and the bottom of the other side is provided with a supporting column 15.

[0049] Through the oblique arrangement, the material placing column 5 and the sensor support 6 can be slightly inclined towards the operation position, so as to facilitate the feeding operation of the robot arm or the operator.

[0050] The supporting surface 14 can be horizontally supported on the working platform, and the supporting column 15 can lift the other end of the detection base plate. The supporting surface 14 can be welded and fixed on the working platform, and the two ends of the supporting column 15 can be connected and fixed by welding, or can be fixed by screw connection.

[0051] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An exhaust pipe straight pipe end cover pre-welding detection tool, characterized in that, Including detection base plate, material placement column is equipped on the detection base plate, the material placement column is used for sleeve joint exhaust pipe straight pipe, one side of the material placement column is equipped with sensor support, adjustable hole site recognition sensor is equipped on the sensor support, the hole site recognition sensor is used for detecting the exhaust pipe straight pipe that is equipped on the material placement column.

2. The exhaust pipe straight pipe end cover pre-welding detection tooling according to claim 1, characterized in that, The height of the sensor support is lower than the height of the material placement column, and a distance of 10-25 cm is provided between the sensor support and the central axis of the material placement column.

3. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, A vertical clamping groove is provided on the sensor support, and the vertical clamping groove is connected with the hole site recognition sensor.

4. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, A vertical height scale mark is provided on the sensor support.

5. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, The hole site recognition sensor is an optical sensor with an external thread, and the optical sensor is fixed on the sensor support by a plurality of nuts.

6. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, The material placement column is a cylinder, and a circular arc chamfer is provided on the outer periphery of the end portion.

7. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, A connecting hole is provided at the bottom of the material placement column, and a screw rod or a limiting column is provided on the detection base plate, and the screw rod or the limiting column is connected with the connecting hole.

8. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, A pair of the material placement columns are provided on the detection base plate, and the sensor support is arranged on one side of each of the material placement columns.

9. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 1, wherein, The detection base plate is horizontally placed on a workbench, or the detection base plate is inclinedly arranged on the workbench.

10. The exhaust pipe straight pipe end cover pre-welding detection tooling of claim 9, wherein, The inclination angle of the detection base plate is 15-40°, and a supporting surface is provided at the bottom of one side of the detection base plate, and a supporting column is provided at the bottom of the other side of the detection base plate.

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