Detection device for spot welding of metal plate

Abstract

The utility model relates to the technical field of sheet metal spot welding, in particular to a sheet metal spot welding detection device which comprises a base and a guide seat which is fixed on the base and arranged in an inclined mode, a sliding block is installed on the guide seat in a sliding mode, and the sliding block is driven by a driving piece installed at the side end of the guide seat so as to be capable of sliding relative to the guide seat. The detection rod is rotationally installed on the sliding block, a trigger part is formed on the detection rod, the detection rod is further connected with a detection unit installed on the guide seat, and when the detection rod rotates relative to the sliding block, the detection unit is triggered. Effective detection of sheet metal parts is realized through the lever principle, sheet metal parts with missing procedures can be effectively prevented from being produced and flowing out, meanwhile, the size of the detection device is effectively reduced, and the problems that due to the fact that an existing inductor and a support are too large in size, loading and taking are inconvenient, and the motion trail of a robot is changed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal spot welding, in particular to a detection device for sheet metal spot welding. Background Art

[0002] During the production and processing of automobile seat sheet metal, the sheet metal base and the bent parts of the automobile seat sheet metal need to be welded.

[0003] Because sheet metal components have multiple through-holes, which are punched and formed in multiple processing steps, sheet metal components must be inspected for leaks before welding to avoid welding on leaky components and incurring additional losses.

[0004] In order to prevent the leakage of products caused by missed inspection processes, sensors are used on spot welding fixtures to detect leaks on the workpieces. Existing detection devices generally include sensors and brackets for supporting the sensors. Since the sensors and brackets are too large, it will make it inconvenient to load and unload parts and change the movement trajectory of the robot. Utility Model Content

[0005] The purpose of the present utility model is to provide a detection device for sheet metal spot welding to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A detection device for sheet metal spot welding, comprising:

[0008] A base and a guide seat fixed on the base and arranged in an inclined shape, wherein a slider is slidably mounted on the guide seat, and the slider is driven by a driving member mounted on a side end of the guide seat so as to be able to slide relative to the guide seat;

[0009] The detection rod is rotatably mounted on the slider and is formed with a trigger portion. The detection rod is also connected to a detection unit mounted on the guide seat. When the detection rod rotates relative to the slider, the detection unit is triggered.

[0010] As described above, the detection device for sheet metal spot welding: a rotating shaft is rotatably mounted on one side of the slider, the detection rod passes through the rotating shaft and is fixed to the rotating shaft, and the rotating shaft is also connected to the slider via a tension spring.

[0011] In the above-mentioned detection device for sheet metal spot welding, a limit plate is installed on the slider, and when the detection rod is not subjected to external force, the detection rod and the limit plate maintain an abutment state.

[0012] In the above-mentioned detection device for sheet metal spot welding, the trigger portion is provided in a strip shape, and the length direction of the trigger portion is parallel to the tilt direction of the guide seat.

[0013] The detection device for sheet metal spot welding as described above: the driving member includes a cylinder, the cylinder is mounted on a cylinder mounting block fixed to the guide seat, and the movable end of the cylinder is fixed to the slider via a connecting column.

[0014] The detection device for sheet metal spot welding as described above: the detection unit includes a sensor mounting block installed on the guide seat, the sensor mounting block is provided with a sensor, and when the detection rod is not subjected to external force, the detection rod maintains contact with the sensor.

[0015] The detection device for sheet metal spot welding as described above: the sensor is a contact sensor.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the initial state, the detection rod and the detection unit maintain an abutment state, and the slider is driven to move relative to the guide seat by the provided driving member, and the slider drives the detection rod to move synchronously. If the required hole has been processed on the sheet metal, the trigger part on the detection rod will pass through the hole smoothly. At this time, the detection rod still maintains an abutment state with the detection unit, and the detection unit does not trigger the alarm; when the required hole has not been processed on the sheet metal, the trigger part on the detection rod is blocked by the sheet metal, and the slider continues to drive the detection rod to move, and the detection rod deflects relative to the slider, so that the detection rod and the detection unit are out of abutment, triggering the alarm device to remind the staff to stop the welding operation.

[0018] By using the lever principle to effectively detect sheet metal parts, the production and outflow of sheet metal parts with missed processes (unprocessed holes in sheet metal parts) can be effectively prevented. At the same time, the volume of the detection device is effectively reduced, eliminating the problem that the existing sensors and brackets are too large, causing inconvenience in loading and unloading parts and changing the movement trajectory of the robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the detection device for sheet metal spot welding.

[0020] Figure 2 A side view of a detection device for sheet metal spot welding.

[0021] Figure 3 This is a schematic diagram of the deflection state of the detection rod when the sheet metal spot welding detection device detects that the required hole has not been machined on the sheet metal part.

[0022] In the figure: 1-base, 2-guide seat, 3-cylinder mounting block, 4-slider, 5-limiting plate, 6-connecting column, 7-retaining ring, 8-rotating shaft, 9-sensor mounting block, 901-sensor, 10-detection rod, 101-trigger part, 11-cylinder, 12-tension spring. DETAILED DESCRIPTION

[0023] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0024] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0025] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0026] See also Figure 1-Figure 2 In an embodiment of the present invention, a detection device for sheet metal spot welding includes: a base 1 and a guide seat 2 fixed on the base 1 and arranged in an inclined shape, the base 1 is fixedly installed on the existing fixture trolley, a slider 4 is slidably installed on the guide seat 2, and the slider 4 is driven by a driving member installed at the side end of the guide seat 2 so as to be able to slide relative to the guide seat 2; a detection rod 10 is rotatably installed on the slider 4 and is formed with a trigger part 101, the detection rod 10 is also connected to a detection unit installed on the guide seat 2, and when the detection rod 10 rotates relative to the slider 4, the detection unit is triggered.

[0027] This embodiment is used to effectively detect automobile sheet metal parts. In the initial state, the detection rod 10 maintains an abutment state with the detection unit. The slider 4 is driven by a provided driving member to move relative to the guide seat 2, and the slider 4 drives the detection rod 10 to move synchronously. If the required hole has been processed on the sheet metal part, the trigger part 101 on the detection rod 10 will pass through the hole smoothly. At this time, the detection rod 10 still maintains an abutment state with the detection unit, and the detection unit does not trigger an alarm; when the required hole has not been processed on the sheet metal part, the trigger part 101 on the detection rod 10 is blocked by the sheet metal part, and the slider 4 continues to drive the detection rod 10 to move. The detection rod 10 deflects relative to the slider 4, so that the detection rod 10 is out of the abutment state with the detection unit, triggering the alarm device to remind the staff to stop the welding operation.

[0028] This embodiment realizes effective detection of sheet metal parts through the lever principle, which can effectively prevent the production and outflow of sheet metal parts with missed processes (unprocessed holes in sheet metal parts), and at the same time effectively reduces the volume of the detection device, eliminating the problem that the existing sensors and brackets are too large, causing inconvenience in loading and unloading parts and changing the movement trajectory of the robot.

[0029] See also Figure 3 Taking the sheet metal as an example to process the required hole, the length of the detection rod 10 located above the slider 4 is defined as b, and the length of the detection rod 10 located below the slider 4 is defined as d. When the trigger part 101 is blocked by the sheet metal and the detection rod 10 continues to rotate, the front-to-back position distance of the trigger part 101 is defined as a, and the front-to-back position distance of the end of the detection rod 10 away from the trigger part 101 is defined as c, where a / c=b / d.

[0030] Preferably, a rotating shaft 8 is rotatably installed on one side of the slider 4, the detection rod 10 passes through the rotating shaft 8 and is fixed to the rotating shaft 8, the rotating shaft 8 is also connected to the slider 4 through a tension spring 12, the rotating shaft 8 passes through the slider 4 and is connected through a retaining ring 7, wherein the detection rod 10 is interference fit with the through hole formed on the rotating shaft 8.

[0031] Furthermore, a limit plate 5 is installed on the slider 4. When the detection rod 10 is not subjected to external force, the detection rod 10 and the limit plate 5 remain in contact. The tension spring 12 generates a rotational force on the rotating shaft 8 toward the limit plate 5, so that the detection rod 10 has a certain reset force after rotating relative to the slider 4. Specifically, one end of the tension spring 12 is installed on the slider 4, and the other end is connected to the eccentric position of the rotating shaft 8.

[0032] Furthermore, the trigger portion 101 is arranged in a strip shape, and the length direction of the trigger portion 101 is parallel to the inclination direction of the guide seat 2, so that when the driving member drives the slider 4 to slide relative to the guide seat 2, the trigger portion 101 keeps moving along its own length direction to ensure better alignment with the hole on the sheet metal.

[0033] The driving member described above includes a cylinder 11, which is mounted on a cylinder mounting block 3 fixed to the guide seat 2, and the movable end of the cylinder 11 is fixed to the slider 4 through a connecting column 6. Of course, in the specific implementation process, an electric telescopic rod or a hydraulic cylinder can also be used to replace the cylinder 11, as long as it can drive the slider 4 to move relative to the guide seat 2. This embodiment does not make specific restrictions on this.

[0034] Preferably, the length of the guide seat 2 is greater than the length of the slider 4, at least one T-shaped slider is formed on the guide seat 2, and a T-shaped groove is formed on the slider 4 to slide with the T-shaped slider, thereby ensuring that the slider 4 can slide stably relative to the guide seat 2.

[0035] Furthermore, the detection unit includes a sensor mounting block 9 installed on the guide seat 2, and a sensor 901 is provided on the sensor mounting block 9. When the detection rod 10 is not subjected to external force, the detection rod 10 maintains contact with the sensor 901. Preferably, the sensor 901 is a contact sensor. When the required hole is not processed on the sheet metal, the trigger part 101 on the detection rod 10 is blocked by the sheet metal, and the slider 4 continues to drive the detection rod 10 to move. The detection rod 10 deflects relative to the slider 4, so that the detection rod 10 and the sensor 901 are out of contact, triggering the alarm device to remind the staff to stop the welding operation.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A detection device for sheet metal spot welding, characterized in that: include: A base (1) and a guide seat (2) fixed on the base (1) and arranged in an inclined shape, a slider (4) being slidably mounted on the guide seat (2), and the slider (4) being driven by a driving member mounted on a side end of the guide seat (2) so as to be able to slide relative to the guide seat (2); A detection rod (10) is rotatably mounted on the slider (4) and is formed with a trigger portion (101). The detection rod (10) is also connected to a detection unit mounted on the guide seat (2). When the detection rod (10) rotates relative to the slider (4), the detection unit is triggered.

2. A detection device for sheet metal spot welding according to claim 1, characterized in that: A rotating shaft (8) is rotatably mounted on one side of the slider (4); the detection rod (10) passes through the rotating shaft (8) and is fixed to the rotating shaft (8); and the rotating shaft (8) is also connected to the slider (4) via a tension spring (12).

3. A detection device for sheet metal spot welding according to claim 2, characterized in that: A limit plate (5) is installed on the slider (4); when the detection rod (10) is not subjected to an external force, the detection rod (10) and the limit plate (5) maintain an abutting state.

4. The detection device for sheet metal spot welding according to claim 1, characterized in that: The trigger portion (101) is arranged in a strip shape, and the length direction of the trigger portion (101) is parallel to the tilt direction of the guide seat (2).

5. The detection device for sheet metal spot welding according to claim 1, characterized in that: The driving member comprises a cylinder (11), the cylinder (11) being mounted on a cylinder mounting block (3) fixed to the guide seat (2), and the movable end of the cylinder (11) being fixed to the slider (4) via a connecting column (6).

6. The detection device for sheet metal spot welding according to claim 1, characterized in that: The detection unit comprises a sensor mounting block (9) mounted on the guide seat (2), a sensor (901) being provided on the sensor mounting block (9), and when the detection rod (10) is not subjected to an external force, the detection rod (10) maintains a contact state with the sensor (901).

7. The detection device for sheet metal spot welding according to claim 6, characterized in that: The sensor (901) is a contact sensor.

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