Resistance welding test piece stripping device

Abstract

The utility model provides a stripping device for a resistance welding test piece. The stripping device comprises a fixed arm, the vertical arm is vertically arranged on the fixed arm; the movable arm is hinged with the vertical arm and can rotate in a vertical plane; the jacking mechanism is arranged between the fixed arm and the movable arm; comprising a fixed end and a power output end, one of the fixed end and the power output end is connected to the fixed arm, and the end not connected to the fixed arm is connected to the movable arm; the first hanging wall is vertically arranged on the fixed arm, and the first hanging wall and the vertical arm are arranged at an interval; the second hanging wall is vertically arranged on the movable arm, and the second hanging wall and the first hanging wall are arranged at intervals up and down; the sum of the length of the first hanging wall and the length of the second hanging wall is smaller than the length of the vertical arm. According to the electric resistance welding test piece stripping device, the electric resistance welding test piece is stripped by means of the acting force of the jacking mechanism through the hanging walls which are correspondingly arranged up and down, operation is convenient, and the manual participation degree is low. The welding nugget can be completely stripped, measurement and observation are convenient, the problems that a weldment is difficult to strip and the percent of pass is low can be solved, and the method is suitable for application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of welding test piece tooling, and specifically to a resistance welding test piece stripping device. Background Art

[0002] Resistance welding is one of the common welding methods. According to the requirements of EN15085 "Welding of rail vehicles and their components", a "start-up test" must be performed before welding, which includes a peel test of the resistance welding specimen, that is, a separation test of the two workpieces after welding. The peel test is the process of removing materials other than the welding fusion point, leaving only the weld nugget. Since the base material needs to be torn, it can now be done manually with simple tools for plate base materials below 2mm, but for plate base materials above 2mm, due to the large welding force of the plate, the plate tearing is quite difficult, the peeling time is long and the effect is not ideal, so special tooling is needed.

[0003] There are few stripping tools specifically used for resistance welding specimens in the prior art, and the various specimen stripping tools that have been disclosed have simple structures and single functions, which cannot meet the requirements of effective stripping of resistance welding specimens. Or, in actual use, the stripping operation for specimens with different welding materials and plate thicknesses is relatively complicated and the specimen qualification rate cannot be guaranteed. Utility Model Content

[0004] The utility model aims to solve at least one of the above-mentioned technical problems and provide a resistance welding specimen stripping device with simple structure and convenient operation.

[0005] In order to achieve the above objectives, the utility model provides the following technical solutions:

[0006] A resistance welding specimen stripping device, comprising:

[0007] Fixed arm;

[0008] Vertical arm: vertically set on the fixed arm;

[0009] Movable arm: hinged with the vertical arm, able to rotate in the vertical plane;

[0010] Lifting mechanism: arranged between the fixed arm and the movable arm; including a fixed end and a power output end, wherein one of the fixed end and the power output end is connected to the fixed arm, and the end not connected to the fixed arm is connected to the movable arm;

[0011] First hanging wall: vertically arranged on the fixed arm, and spaced apart from the vertical arm;

[0012] The second hanging wall is vertically arranged on the movable arm and is spaced apart from the first hanging wall;

[0013] The sum of the length of the first hanging wall and the length of the second hanging wall is smaller than the length of the vertical arm.

[0014] In some embodiments of the utility model, the first hanging wall includes a vertical fixing section and a first hanging section arranged on a side wall of the first vertical fixing section, and the first vertical fixing section is arranged on a fixing arm;

[0015] The second hanging wall comprises a second vertical fixed end and a second hanging section arranged on the side wall of the vertical fixed section, and the second vertical fixed end is arranged on the movable arm;

[0016] The first hanging section and the second hanging section are respectively located on the same side of the first hanging wall and the second hanging wall.

[0017] In some embodiments of the utility model, a slot is provided on a side of the first hanging section facing the fixed arm, and a slot is provided on a side of the second hanging section facing the movable arm.

[0018] In some embodiments of the utility model, the lifting mechanism is a jack.

[0019] In some embodiments of the utility model, the fixing seat of the jack is arranged on the fixing arm, and the lifting end is connected to the movable arm.

[0020] In some embodiments of the utility model, a round steel block is provided on the end surface of the movable arm facing the jack, and the round steel block is in contact with the lifting end of the jack.

[0021] In some embodiments of the utility model, a protective cover is provided on the side of the movable arm facing the jack, and the contact portion between the movable arm and the lifting end of the jack is located inside the protective cover.

[0022] In some embodiments of the utility model, a base is further included, and the fixed arm is installed on the base.

[0023] In some embodiments of the present invention, the hinge point between the movable arm and the vertical arm is located on the upper end surface of the vertical arm.

[0024] Compared with the prior art, the resistance welding specimen stripping device provided by the utility model has the following beneficial effects:

[0025] 1. The resistance welding specimen stripping device provided by the utility model can strip the resistance welding specimen by means of the hanging wall correspondingly arranged above and below and the force of the lifting mechanism. The operation is convenient. The manual operation only needs to complete the hanging of the weldment without the need for manual force. One person can complete the welding stripping operation. The welding nugget can be completely stripped, which is convenient for measurement and observation, effectively solving the problems of stripping difficulty and low qualified rate, and is suitable for promotion and application.

[0026] 2. The resistance welding specimen stripping device provided by the utility model is suitable for welding plate specimens of different welding materials and different thicknesses, and is particularly suitable for resistance welding specimens with a plate thickness of 1-5 mm. Compared with traditional manual operations, the use of this invention can greatly improve the efficiency of specimen stripping, greatly improve safety, and effectively improve the appearance and quality of the stripped specimens. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a schematic diagram of the structure of the resistance welding specimen stripping device from the first perspective;

[0029] Figure 2 It is a schematic structural diagram of the resistance welding specimen stripping device from the second viewing angle;

[0030] Figure 3 It is a partial enlarged schematic diagram of the coordination structure between the jack and the movable arm;

[0031] Figure 4 It is a partial enlarged schematic diagram of the first hanging wall and the second hanging wall;

[0032] 1- Base;

[0033] 2-Fixed arm;

[0034] 3- vertical arm;

[0035] 4-Movable arm;

[0036] 5- articulated axis;

[0037] 6-Jack;

[0038] 7-first hanging wall, 701-first vertical fixing section, 702-first hanging section, 703-card slot;

[0039] 8-second hanging wall, 801-second vertical fixing section, 802-second hanging section, 803-card slot;

[0040] 9- round steel block;

[0041] 10-Shield. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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.

[0043] In the description of the present application, it should be noted that the fixed connection described in the present application can be a detachable fixed connection or an integrated fixed connection; the indication of the orientation or positional relationship is based on the positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0044] The terms "first" and "second" are used for descriptive purposes only and are not intended to imply relative importance.

[0045] The utility model provides a resistance welding test piece stripping device, which is used for stripping two resistance welding test pieces and can be used as an auxiliary for welding "start-up test" to verify the reliability of the welding process.

[0046] The overall structure of the peel test device is referenced Figure 1 and Figure 2 , including a base 1 and a tooling body arranged on the base 1.

[0047] A fixed arm 2 is provided on the base, and a detachable structure is provided between the fixed arm 2 and the base 1. For example, the fixed arm 2 can be fixed to the base 1 by bolts, and the installation position of the tooling body as a whole can be changed according to the application scenario. The structure and shape of the fixed arm 2 are not specifically limited. In this embodiment, it is a square column.

[0048] A vertical arm 3 is vertically arranged on the fixed arm 2. In a preferred embodiment, the vertical arm 3 is vertically arranged. In this embodiment, the vertical arm 3 is also in the shape of a square column.

[0049] A movable arm 4 is hingedly provided with the vertical arm 3, and the movable arm 4 can rotate in a vertical plane. In this embodiment, the movable arm 4 is also in the shape of a square column. In a preferred implementation structure, the hinge point between the movable arm 4 and the vertical arm 2 is located at the upper end surface of the vertical arm 2, and a hinge shaft 5 is provided on the upper end surface of the vertical arm 2, and the movable arm 4 and the vertical arm 2 are axially connected at the hinge shaft 5.

[0050] The relative rotation between the movable arm 4 and the vertical arm 2 is controlled by the lifting mechanism. The lifting mechanism is arranged between the fixed arm 2 and the movable arm 4; it includes a fixed end and a power output end, wherein one of the fixed end and the power output end is connected to the fixed arm 2, and the end not connected to the fixed arm is connected to the movable arm 4. For example, the fixed end is connected to the fixed arm 2, the power output end is connected to the movable arm 4, and the force of the power output end acts on the movable arm 4, pushing the movable arm 4 to rotate. The opposite setting can also be adopted, as long as there is a force acting on the movable arm 4.

[0051] In a preferred embodiment, the lifting mechanism is a jack 6 , a fixed seat of the jack 6 is arranged on the fixed arm 2 , and a lifting end is connected to the movable arm 4 .

[0052] A first hanging wall 7 is vertically arranged on the fixed arm 2, and the first hanging wall 7 is spaced apart from the vertical arm 3;

[0053] A second hanging wall 8 is vertically arranged on the movable arm 4 , and the first hanging wall 9 is spaced apart from the vertical arm 3 and spaced apart from the first hanging wall 7 in an upper and lower direction.

[0054] In the preferred structure, the sum of the length of the first hanging wall 7 and the length of the second hanging wall 8 is less than the length of the vertical arm 3. This facilitates the workpiece hanging and stripping operations.

[0055] The first hanging wall 7 and the second hanging wall 8 are used to hang the workpiece to be peeled. The structures of the two can be referred to Figure 4 When performing the stripping operation, the two parts of the workpiece to be stripped are connected to the first hanging wall 7 and the second hanging wall 8 respectively, the jack is started, and the movable arm 4 is pushed upward. The force of the jack acts between the first hanging wall 7 and the second hanging wall 8 to strip the two parts of the welded workpiece.

[0056] In order to facilitate the connection between the workpiece and the hanging wall, in some embodiments of the utility model, the first hanging wall 7 includes a vertical fixing section 701 and a first hanging section 702 arranged on the side wall of the first vertical fixing section 701, and the first vertical fixing section 701 is arranged on the fixing arm 2;

[0057] Correspondingly, the second hanging wall 8 includes a second vertical fixed end 801 and a second hanging section 802 arranged on the side wall of the vertical fixed section 801, and the second vertical fixed end is arranged on the movable arm 4; the first hanging section 701 and the second hanging section 702 are respectively located on the same side of the first hanging wall 7 and the second hanging wall 8. In this embodiment, the two hanging sections are located on the outside of the two hanging walls.

[0058] Usually, in order to conduct a welding peeling test, hanging holes or hangers are processed on the two parts of the weldment respectively. When performing the weld peeling operation, the upper weldment is hung on the second hanging wall 8, and the lower weldment is hung on the first hanging wall 7, and the jack is started to perform the welding peeling operation.

[0059] In order to make the weldment more stably mounted, in some embodiments of the present invention, a first mounting section 702 is provided with a slot 703 on the side facing the fixed arm 2, and a second mounting section 802 is provided with a slot 803 on the side facing the movable arm 4. When the weldment is mounted, the weldment is mounted in the slot 703 and the slot 803 through the mounting hole or the mounting member, respectively, to prevent the weldment from falling off.

[0060] refer to Figure 3 In order to protect the connection between the jack and the movable arm 4, in some embodiments of the utility model, a round steel block 9 is provided on the end surface of the movable arm 4 facing the jack 6, and the round steel block 9 is in contact with the lifting end of the jack 6.

[0061] In some embodiments of the utility model, a protective cover 10 is provided on the side of the movable arm 4 facing the jack 6 , and the contact portion between the movable arm 4 and the top lifting end of the jack 6 is located inside the protective cover 10 .

[0062] The functional structure of the round steel block 9 and the shield 10 can ensure the vertical force of the jack 6 on the movable arm 4, and avoid excessive friction between the jack 6 and the movable arm 4 during the rotation process.

[0063] The resistance welding specimen stripping device provided by the utility model is suitable for stripping resistance welding specimens with different welding materials and a plate thickness of 1-5 mm. It is designed with upper and lower hanging points and adopts the function of hydraulic jack, which effectively solves the problems of difficult and unqualified specimen stripping and facilitates on-site employees to strip the resistance welding specimens.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A resistance welding specimen stripping device, characterized in that: include: Fixed arm; Vertical arm: vertically set on the fixed arm; Movable arm: hinged with the vertical arm, able to rotate in the vertical plane; Lifting mechanism: arranged between the fixed arm and the movable arm; including a fixed end and a power output end, wherein one of the fixed end and the power output end is connected to the fixed arm, and the end not connected to the fixed arm is connected to the movable arm; First hanging wall: vertically arranged on the fixed arm, and spaced apart from the vertical arm; The second hanging wall is vertically arranged on the movable arm and is spaced apart from the first hanging wall; The sum of the length of the first hanging wall and the length of the second hanging wall is smaller than the length of the vertical arm.

2. The resistance welding specimen stripping device according to claim 1, characterized in that: The first hanging wall comprises a vertical fixing section and a first hanging section arranged on a side wall of the first vertical fixing section, and the first vertical fixing section is arranged on a fixing arm; The second hanging wall comprises a second vertical fixed end and a second hanging section arranged on the side wall of the vertical fixed section, and the second vertical fixed end is arranged on the movable arm; The first hanging section and the second hanging section are respectively located on the same side of the first hanging wall and the second hanging wall.

3. The resistance welding specimen stripping device according to claim 2, characterized in that: A clamping slot is provided on a side of the first hanging section facing the fixed arm, and a clamping slot is provided on a side of the second hanging section facing the movable arm.

4. The resistance welding specimen stripping device according to claim 1, characterized in that: The lifting mechanism is a jack.

5. The resistance welding specimen stripping device according to claim 4, characterized in that: The fixing seat of the jack is arranged on the fixing arm, and the lifting end is connected to the movable arm.

6. The resistance welding specimen stripping device according to claim 5, characterized in that: A round steel block is arranged on the end surface of the movable arm facing the jack, and the round steel block contacts the lifting end of the jack.

7. The resistance welding specimen stripping device according to claim 5 or 6, characterized in that: A protective cover is arranged on the side of the movable arm facing the jack, and the contact part between the movable arm and the lifting end of the jack is located inside the protective cover.

8. The resistance welding specimen stripping device according to claim 1, characterized in that: It further comprises a base, on which the fixed arm is mounted.

9. The resistance welding specimen stripping device according to claim 1, characterized in that: The hinge point between the movable arm and the vertical arm is located on the upper end surface of the vertical arm.

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