A welding fixture integrated resistance welding dotting mechanism

Abstract

The utility model discloses a kind of welding fixture integrated resistance spot welding mechanism, using the sliding of seat plate on workbench can drive upper electrode arm and lower electrode arm relative workpiece movement, the movement of cylinder is combined to drive upper pressing arm rotates around hinged arm, to realize upper pressing arm movement to lower electrode arm, realize the quick clamping of workpiece between upper electrode arm and lower electrode arm, and by being electrified to upper electrode arm and lower electrode arm, it can realize the quick electrification electrolysis of workpiece, after welding is completed, cylinder drives upper electrode arm movement away from lower electrode arm, combined with the back sliding of seat plate on workbench, to quickly realize the quick indirect spot welding of welding position narrow.

Description

Technical Field

[0001] This utility model relates to the field of robotic welding technology, and more specifically, to a welding fixture integrated with a resistance welding spotting mechanism for spot welding in very narrow positions on sheet metal. Background Technology

[0002] Spot welding is a type of resistance welding. It involves pressing the workpieces to be welded between two electrodes and passing an electric current through them. The resistance generated by the current flowing through the contact surface and adjacent areas of the workpieces heats them to a molten or plastic state, thus forming a metal bond.

[0003] Currently, when using flexible production lines for robotic spot welding of body-in-white parts, some automotive components have unique weld points in inaccessible to standard welding clamps. This necessitates the manufacture of non-standard welding clamps, resulting in wasted resources and extended production cycles. For these special weld points, specialized mechanisms are created on the welding fixture to achieve indirect welding. Indirect welding is used when the surface area of ​​the object being welded (e.g., train panels, car panels) is too large for direct spot welding.

[0004] Therefore, it is necessary to propose a welding fixture integrated with a resistance welding marking mechanism to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a welding fixture integrated with a resistance welding spotting mechanism to solve the problem of inconvenient welding of existing body parts due to the narrow location of the welding spot.

[0006] According to one aspect of this utility model, a welding fixture integrated resistance welding marking mechanism is provided, including a sliding plate mounted on a worktable and a seat plate mounted on the sliding plate. A mounting groove is provided in the middle of the seat plate, and a Z-shaped lower pressure arm is rotatably mounted in the mounting groove. A cylinder is connected to one side of the lower pressure arm, and an upper pressure arm is hinged to the telescopic rod of the cylinder. The upper pressure arm is connected to an upper electrode arm via an insulating pad, and the middle part of the upper pressure arm is connected to the seat plate via a hinge pin. A lower electrode arm is also mounted on the lower pressure arm, which is positioned opposite to the upper electrode arm. The cylinder drives the upper pressure arm to rotate around the hinge pin, thereby driving the upper electrode arm to rotate, causing the upper electrode arm and the lower electrode arm to clamp or release each other.

[0007] Preferably, based on the above scheme, the lower electrode arm is mounted on the lower pressure arm via an insulating pad, and the lower pressure arm is fixed to the base plate.

[0008] Based on the above scheme, a preferred embodiment is provided on the seat plate, with both ends of the guide block connected to the hinge pin. The top and bottom ends of the guide block are respectively provided with screw holes, and an upper limit stud and a lower limit stud are inserted into the screw holes. The upper limit stud and the lower limit stud are arranged parallel to the telescopic rod of the cylinder, and one end of the lower limit stud abuts against the lower pressure arm, while the upper limit stud abuts against the end face of the upper pressure arm.

[0009] Based on the above scheme, preferably, both the upper electrode arm and the lower electrode arm are provided with cooling water inlet plugs on the side near the base plate.

[0010] Based on the above scheme, preferably, the upper pressure arm includes an arm plate and a support plate. The support plate is vertically installed in the middle of the arm plate and is inserted into the groove in the middle of the seat plate, and is connected to the seat plate through the hinge pin.

[0011] Preferably, based on the above scheme, one end of the arm plate is hinged to the end of the telescopic rod of the cylinder via a rotating shaft, and the other end of the arm plate is connected to the upper electrode arm via an insulating pad.

[0012] Based on the above scheme, preferably, an electrode cap is provided on the upper electrode arm and the lower electrode arm respectively.

[0013] Based on the above scheme, preferably, the workbench is provided with two parallel slide rails, the seat plate is slidably mounted on the slide rails, and a drive cylinder is provided on the workbench between the slide rails, the drive cylinder being fixedly connected to the seat plate.

[0014] This utility model discloses an integrated resistance welding spotting mechanism for a welding fixture. By sliding a sliding plate on the worktable, the upper and lower electrode arms can be moved relative to the workpiece. Combined with the movement of a cylinder, the upper pressure arm rotates around the hinge arm to move downward to the lower electrode arm, thereby quickly clamping the workpiece between the upper and lower electrode arms. By energizing the upper and lower electrode arms, the workpiece can be rapidly electrolyzed. After welding is completed, the cylinder drives the upper electrode arm to move away from the lower electrode arm, and the sliding plate slides back on the worktable, thus quickly achieving rapid indirect spotting welding in narrow welding positions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0016] Figure 1 This is a three-dimensional schematic diagram of the integrated resistance welding dotting mechanism of the welding fixture of this utility model;

[0017] Figure 2 This is a state diagram of the integrated resistance welding dotting mechanism of the welding fixture of this utility model;

[0018] Figure 3 This is another state diagram of the integrated resistance welding dotting mechanism of the welding fixture of this utility model;

[0019] Explanation of icon numbers:

[0020] 1. Worktable; 11. Slide rail; 12. Drive cylinder;

[0021] 2. Slide plate; 21. Seat plate; 23. Cylinder; 24. Upper pressure arm; 25. Arm plate; 26. Support plate; 27. Insulating pad; 28. Upper electrode arm; 29. ​​Hinge pin; 30. Electrode cap;

[0022] 4. Lower electrode arm; 42. Lower pressure arm;

[0023] 5. Guide block; 51. Screw hole; 52. Limiting stud;

[0024] 6. Cooling water inlet plug. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0027] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0028] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0029] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0032] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, the present invention provides a welding fixture integrated resistance welding marking mechanism, which includes a sliding plate 2 and a seat plate 21. The sliding plate 2 is slidably mounted on the worktable 1, and the seat plate 21 is vertically mounted on the sliding plate 2. When the sliding plate 2 slides relative to the worktable 1, it will drive the seat plate 21 to move on the worktable 1.

[0033] The seat plate 21 has a mounting groove (not shown) in the middle. A Z-shaped lower pressure arm 42 is rotatably mounted in the mounting groove. A cylinder 23 is mounted on one end of the lower pressure arm 42, and a lower electrode arm 4 is mounted on the other end of the lower pressure arm 42.

[0034] The cylinder 23 has an upper pressure arm 24 hinged to its telescopic rod. The upper pressure arm 24 is connected to an upper electrode arm 28, which is opposite to the lower electrode arm 4, via an insulating pad 27. The middle part of the upper electrode arm 28 is connected to the base plate 21 via a hinge pin 29.

[0035] The piston rod inside cylinder 23 presses the upper arm 24 upwards, with the hinge pin 29 as the midpoint, and rotates around the hinge pin 29 to drive the upper electrode arm 28 on the upper pressing arm 24 to open or close.

[0036] The base plate 21 of this utility model is also equipped with a lower electrode arm 4, which is arranged opposite to the upper electrode arm 28. When the cylinder 23 drives the upper pressure arm 24 to rotate around the hinge pin 29, it drives the upper electrode arm 28 to rotate, so that the upper electrode arm 28 and the lower electrode arm 4 are clamped or released from each other.

[0037] The lower electrode arm 4 is mounted on the lower pressure arm 42 via an insulating pad 27. The lower pressure arm 42 is fixed on the base plate 21. Electrode caps 30 are respectively provided on the upper electrode arm 28 and the lower electrode arm 4.

[0038] Before loading the workpiece, the slider is at the far end. Even if the upper electrode arm 28 and the lower electrode arm 4 on the base plate 21 are far from the loading position and are in an open state, when it is necessary to enter the working state for loading, firstly, the slide plate 2 moves on the worktable 1, driving the base plate 21 to move towards the loading position. When it moves to the loading position, the workpiece to be processed is between the upper electrode arm 28 and the lower electrode arm 4. Thus, it only needs to be clamped. Then, the extension rod of the cylinder 23 moves, driving the upper pressure arm 24 to rotate around the hinge pin 29, thereby driving the upper electrode arm 28 to press against the lower electrode arm 4. In this way, the workpiece can be clamped by both. After the clamping operation is completed, the upper electrode arm 28 and the lower electrode arm 4 are energized to complete the indirect spot welding of the workpiece to be processed.

[0039] It is worth noting that, in order to control the smoothness of the opening and closing of the upper electrode arm 28 and the degree of opening and closing of the upper electrode arm 28, the present invention also installs a guide block 5 on the base plate 21. The two ends of the guide block 5 are connected to the hinge pin 29, and the top and bottom surfaces of the guide block 5 are respectively provided with screw holes 51. The upper limit screw 52 and the lower limit screw pass through the screw hole 51. The upper limit screw 52 and the lower limit screw are arranged parallel to the telescopic rod of the cylinder 23, and the lower limit screw abuts against the lower pressure arm 42, and the upper limit screw 52 abuts against the end face of the upper pressure arm 24.

[0040] The rotation angle of the lower electrode arm 4 and the upper electrode arm 28 is adjusted by the length of the upper limit stud 52 and the lower limit stud within the guide block 5, thereby controlling the opening and closing degree of the lower electrode arm 4 and the upper electrode arm 28.

[0041] Specifically, since cylinder 23 is relatively fixed to the lower pressure arm 42 at the bottom, and the telescopic rod of cylinder 23 is relatively fixed to the upper pressure arm 24, when cylinder 23 is ventilated, the cylinder body of cylinder 23 will move to the side of the lower pressure arm 42 to pull the upper pressure arm 24 around the hinge point between the telescopic rod of cylinder 23 and the upper pressure arm 24. Simultaneously, a force will be applied to the lower pressure arm 42 at the cylinder body mounting position of cylinder 23, causing the lower pressure arm 42 to open around the hinge point with the seat plate 21, and conversely, the clamping arm will close.

[0042] Furthermore, the present invention also provides cooling water inlet plugs 6 on both the upper electrode arm 28 and the lower electrode arm 4 near the seat plate 21.

[0043] Please continue reading. Figure 2As shown, the upper pressure arm 24 of this utility model includes an arm plate 25 and a support plate 26. The support plate 26 is vertically installed in the middle of the arm plate 25. The support plate 26 is inserted into the groove in the middle of the seat plate 21 and is connected to the seat plate 21 by a hinge pin 29.

[0044] One end of the arm plate 25 is hinged to the end of the telescopic rod of the cylinder 23 via a rotating shaft, and the other end of the arm plate 25 is connected to the upper electrode arm 28 via an insulating pad 27. The end of the arm plate 25 can be provided with a plug hole (not shown). The end of the telescopic rod of the cylinder 23 is provided with a connector with a connection hole. The connection hole and the plug hole are arranged opposite to each other and connected by a rotating shaft. In this way, when the telescopic rod of the cylinder 23 extends or retracts, an upward or downward force can be applied to the arm plate 25, causing the arm plate 25 to rotate around the hinge pin 29, thereby realizing the opening and closing of the arm plate 25 relative to the lower electrode arm 4.

[0045] It is worth noting that the workbench 1 of this utility model is provided with two parallel slide rails 11. The slide plate 2 is slidably mounted on the slide rails 11. A drive cylinder 12 is provided on the workbench 1 between the slide rails 11. The top of the drive cylinder 12 is lower than the plane of the slide rails 11, and the telescopic rod of the drive cylinder 12 is fixedly connected to the seat plate 21. When the telescopic rod of the drive cylinder 12 extends or retracts, it can drive the slide plate 2 to move on the slide rails 11, thereby driving the seat plate 21 on the slide plate 2 to move.

[0046] This utility model discloses an integrated resistance welding spotting mechanism for a welding fixture. By sliding the base plate 21 on the worktable 1, the upper electrode arm 28 and the lower electrode arm 4 can move relative to the workpiece. Combined with the movement of the cylinder 23, the upper pressure arm 24 rotates around the hinge arm, so that the upper pressure arm 24 moves to the lower electrode arm 4, thereby quickly clamping the workpiece between the upper electrode arm 28 and the lower electrode arm 4. By energizing the upper electrode arm 28 and the lower electrode arm 4, the workpiece can be quickly electrolyzed. After welding is completed, the cylinder 23 drives the upper electrode arm 28 to move away from the lower electrode arm 4, and the base plate 21 slides back on the worktable 1, thereby quickly realizing rapid indirect spotting welding in narrow welding positions.

[0047] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A welding fixture integrated with a resistance welding marking mechanism, characterized in that, The device includes a sliding plate mounted on a workbench and a seat plate mounted on the sliding plate. The seat plate has a mounting groove in the middle, and a Z-shaped lower pressure arm is rotatably mounted in the mounting groove. A cylinder is connected to one side of the lower pressure arm, and an upper pressure arm is hinged to the telescopic rod of the cylinder. The upper pressure arm is connected to an upper electrode arm through an insulating pad. The middle part of the upper pressure arm is connected to the seat plate through a hinge pin. A lower electrode arm is also mounted on the lower pressure arm, which is opposite to the upper electrode arm. The cylinder drives the upper pressure arm to rotate around the hinge pin, thereby driving the upper electrode arm to rotate, so that the upper electrode arm and the lower electrode arm clamp or release each other.

2. The integrated resistance welding marking mechanism for welding fixtures as described in claim 1, characterized in that, The lower electrode arm is mounted on the lower pressure arm via an insulating pad, and the lower pressure arm is fixed to the base plate.

3. The integrated resistance welding marking mechanism for welding fixtures as described in claim 2, characterized in that, The base plate is also equipped with a guide block. Both ends of the guide block are connected to the hinge pin. The top and bottom ends of the guide block are respectively provided with screw holes. An upper limit stud and a lower limit stud are inserted into the screw holes. The upper limit stud and the lower limit stud are arranged parallel to the telescopic rod of the cylinder. One end of the lower limit stud abuts against the lower pressure arm, and the upper limit stud abuts against the end face of the upper pressure arm.

4. The integrated resistance welding marking mechanism for welding fixtures as described in claim 1, characterized in that, Both the upper electrode arm and the lower electrode arm are equipped with cooling water inlet plugs on the side near the base plate.

5. The integrated resistance welding marking mechanism for welding fixtures as described in claim 1, characterized in that, The upper pressure arm includes an arm plate and a support plate. The support plate is vertically installed in the middle of the arm plate and is inserted into a groove in the middle of the seat plate. It is connected to the seat plate by the hinge pin.

6. The integrated resistance welding marking mechanism for a welding fixture as described in claim 5, characterized in that, One end of the arm plate is hinged to the end of the telescopic rod of the cylinder via a rotating shaft, and the other end of the arm plate is connected to the upper electrode arm via an insulating pad.

7. The integrated resistance welding marking mechanism for welding fixtures as described in claim 1, characterized in that, Electrode caps are respectively provided on the upper electrode arm and the lower electrode arm.

8. The integrated resistance welding marking mechanism for a welding fixture as described in claim 1, characterized in that, The workbench is provided with two parallel slide rails, the slide plate is slidably mounted on the slide rails, and a drive cylinder is provided on the workbench between the slide rails, the drive cylinder being fixedly connected to the slide plate.

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