Automatic projection welding clamp for automobile foot margin assembly

Abstract

The utility model belongs to the technical field of welding clamps, and particularly relates to an automatic projection welding clamp for an automobile foot margin assembly, which comprises a lower electrode mechanism and an upper electrode mechanism, and the lower electrode mechanism comprises a lower electrode base, a first cooling component, a positioning mechanism and a first metal conductive block; the upper electrode mechanism comprises an upper electrode base, a second cooling assembly and a second metal conductive block; the positioning mechanism comprises a first positioning assembly and a second positioning assembly; the first positioning assembly and the second positioning assembly are each provided with a positioning pin. And through pose anchoring of the positioning pins, the same type of automobile foot margin assembly part welding clamp matched with the two positioning pins in terms of position can be shared.

Description

TECHNICAL FIELD

[0001] The utility model belongs to welding fixture technical field especially relates to an automatic projection welding fixture of automobile floor anchor assembly. BACKGROUND

[0002] The automobile floor anchor assembly is a key connecting component of the vehicle body chassis, and is used for fixing safety components such as seats and safety belts, and the welding quality directly affects the safety of the vehicle and the assembly precision. In the traditional production process, the floor anchor assembly is usually connected by projection welding process from multiple stamping parts, and needs to rely on a special welding fixture for positioning. However, the traditional fixture is usually single and special, and is only suitable for a specific model of floor anchor assembly. When the vehicle model is changed or the size of the parts is adjusted, the fixture needs to be redesigned, resulting in increased cost and production line downtime. SUMMARY

[0003] The utility model discloses an automatic projection welding fixture of automobile floor anchor assembly, which aims to solve the problem that the welding fixture of the automobile floor anchor assembly in the prior art cannot be compatible with multiple same type parts, and realizes the sharing of the welding fixture for the same type of automobile floor anchor assembly parts.

[0004] To achieve the above-mentioned purpose, the utility model embodiment provides an automatic projection welding fixture of automobile floor anchor assembly, which comprises a lower electrode mechanism and an upper electrode mechanism, characterized in that the lower electrode mechanism comprises a lower electrode base, a first cooling assembly, a positioning mechanism and a first metal conductive block; a T-shaped nut is arranged below the lower electrode base for quickly replacing the lower electrode mechanism; the first cooling assembly is fixed on the lower electrode base;

[0005] The positioning mechanism comprises a first positioning assembly and a second positioning assembly; the first positioning assembly is fixed on the first cooling assembly; the second positioning assembly is fixed on the lower electrode base; the first positioning assembly and the second positioning assembly are both provided with a positioning pin for positioning the welding product;

[0006] The first metal conductive block is fixed on the first positioning assembly for quickly conducting electricity to form a welding loop;

[0007] The upper electrode mechanism comprises an upper electrode base, a second cooling assembly and a second metal conductive block; a T-shaped nut is arranged above the upper electrode base for quickly replacing the upper electrode mechanism; the second cooling assembly is fixed below the upper electrode base; the second metal conductive block is fixed below the second cooling assembly.

[0008] As optional scheme of the utility model, the first cooling assembly and the second cooling assembly are internally provided with water cooling flow channels, and the first cooling assembly and the second cooling assembly are externally provided with water inlet connecting pipe orifices and water outlet connecting pipe orifices, which are used for quickly dissipating heat for the projection welding clamp.

[0009] As optional scheme of the utility model, the first metal conductive block and the second metal conductive block are provided with wear lines, which are used for visualizing the wear degree of the metal conductive block.

[0010] As optional scheme of the utility model, the first metal conductive block is provided with a screw hole and a fixing screw, which are used for quickly replacing the first metal conductive block.

[0011] As optional scheme of the utility model, the lower electrode base and the upper electrode base are both provided with pin holes, which are used for quickly and accurately switching tooling.

[0012] As optional scheme of the utility model, the second positioning assembly further comprises a limiting block, which is used for limiting the welding product.

[0013] As optional scheme of the utility model, the positioning pin on the first positioning assembly is adaptively air-floating assembled.

[0014] The one or more technical solutions in the automobile ground assembly automatic projection welding clamp provided by the utility model embodiment at least have one of the following technical effects:

[0015] The application provides an automobile ground assembly automatic projection welding clamp, which realizes quick replacement of a lower electrode mechanism and an upper electrode mechanism by arranging T-shaped nuts on the upper electrode base and the lower electrode base, realizes quick heat dissipation of a metal conductive block by arranging water cooling flow channels, water inlet connecting pipe orifices and water outlet connecting pipe orifices on the cooling assembly, realizes high-speed and accurate switching of tooling by arranging pin holes on the lower electrode base and the upper electrode base, realizes quick replacement of the metal conductive block by arranging screw holes and fixing screws on the metal conductive block, realizes visualization of the wear degree of the metal conductive block by arranging wear lines on the metal conductive block, realizes accurate positioning of a welding product and sharing of the same type of automobile ground assembly part welding clamp with two positioning pins by arranging the positioning pin on the positioning assembly, and solves the problems of thermal deformation, assembly error and dynamic load in the welding process by adaptively air-floating assembling the positioning pin on the second positioning assembly, thereby improving welding quality, equipment life and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described in the following are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 The present application provides a kind of automobile ground assembly automatic projection welding fixture's overall structure schematic view for embodiment 1 of the present application.

[0018] Figure 2 The present application provides a kind of automobile ground assembly automatic projection welding fixture's lower electrode mechanism structure schematic view for embodiment 1 of the present application.

[0019] Figure 3 The present application provides a kind of automobile ground assembly automatic projection welding fixture's upper electrode mechanism structure schematic view for embodiment 1 of the present application.

[0020] Figure 4 The present application provides a kind of automobile ground assembly automatic projection welding fixture's lower electrode mechanism structure schematic view for embodiment 2 of the present application.

[0021] In the drawings, various reference signs represent:

[0022] 1, lower electrode mechanism;2, upper electrode mechanism;3, lower electrode base;4, first cooling component;5, first positioning component;6, second positioning component;7, first metal conductive block;8, upper electrode base;9, second cooling component;10, second metal conductive block;301, pin hole;302, T-shaped nut;401, water inlet connecting pipe opening;402, water outlet connecting pipe opening;501, first positioning pin;601, second positioning pin;602, first limiting block;701, wear line;702, fixing screw and screw hole;11, third positioning component;1101, third positioning pin;1102, second limiting block. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the embodiments of the present application, and cannot be understood as limiting the present application.

[0024] In the description of the embodiments of the utility model, it is understood that the directions or position relations indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed in a specific direction and be operated, and therefore cannot be understood as limiting the utility model.

[0025] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0026] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0027] In the specific embodiment 1 of the utility model, as shown in Figures 1 to 3 An automobile foot assembly automatic projection welding clamp is provided, which comprises a lower electrode mechanism 1 and an upper electrode mechanism 2, wherein:

[0028] Referring to Figure 2 , the lower electrode mechanism 1 comprises a lower electrode base 3, a first cooling assembly 4, a positioning mechanism and a first metal conductive block 7; the lower electrode base 3 is provided with four fixing holes, a bolt passes through the fixing holes and is connected with a T-shaped nut 302 below the lower electrode base 3, and the other end of the bolt is connected with a circular limiting block and a nut above the lower electrode base 3. After the nut is tightened, the T-shaped nut 302 is firmly fixed below the lower electrode base 3, and through the T-shaped nut 302, a matching driving module can realize quick replacement of the lower electrode mechanism 1.

[0029] The lower electrode base 3 is also provided with a plurality of pin holes 301, and the first cooling assembly 4 and the second positioning assembly 6 and the like are fixed on the lower electrode base 3 through the pin holes, so that the components can be quickly and accurately switched through the pin holes.

[0030] The first cooling assembly 4 is fixed on the lower electrode base 3; the first cooling assembly 4 is internally provided with a water cooling flow channel; the first cooling assembly 4 is externally provided with a water inlet connecting pipe 401 and a water outlet connecting pipe 402, the external water inlet connecting pipe 401 and the water outlet connecting pipe 402 are in communication with the internal water cooling flow channel, and cooling water is continuously fed into the first cooling assembly 4 to rapidly dissipate heat from the first metal conductive block 7.

[0031] The positioning mechanism comprises a first positioning assembly 5 and a second positioning assembly 6; the first positioning assembly 5 is fixed on the first cooling assembly 4; the first positioning assembly 5 is centrally provided with a first positioning pin 501, the top end of the first positioning pin 501 is in the shape of a circular truncated cone, and is used for positioning the first component of the footing assembly; at the same time, a positioning groove is arranged at the same horizontal position as the first positioning pin 501, and is used for further positioning the first component of the footing assembly, and is suitable for the case that the positioning column of the first component of the footing assembly can be inserted into the positioning groove. The first positioning pin 501 is assembled by self-adaptive air floating, gas is blown into the inside of the first positioning assembly 5 through the air hole, and the bottom of the first positioning pin 501 is in a floating state under the action of the gas. In the continuous working process, the first metal conductive block 7 is subject to wear, and the accuracy of the projection welding clamp will decrease along with the wear of the first metal conductive block 7. However, the self-adaptive air floating assembly can adaptively adjust the spacing between the first metal conductive block 7 and the first positioning pin 501, and can maintain good accuracy under the condition that the first metal conductive block 7 is damaged. In this way, the welding accuracy of the projection welding clamp will not decrease greatly before the wear degree of the first metal conductive block 7 reaches the wear line 701.

[0032] The second positioning assembly 6 is fixed on the lower electrode base 3; the second positioning assembly 6 is provided with a second positioning pin 601, which is in the shape of a pear; the second positioning pin 601 is at a different horizontal position from the first positioning pin 501, and is used for positioning the second component of the footing assembly; the second positioning assembly 6 is further provided with a first limiting block 602, which is used for limiting the second component of the footing assembly; the shape of the first limiting block 602 is adapted to the shape of the second component of the footing assembly.

[0033] The first metal conductive block 7 is fixed on the first positioning assembly 6, four grooves are arranged on the first metal conductive block 7, screw holes and fixing screws 702 are arranged in the grooves, the fixing screws are used for fixing the first metal conductive block 7 and the first positioning assembly 6 together through the screw holes, so that the damaged first metal conductive block 7 can be replaced conveniently, a hole is arranged at the center of the first metal conductive block 7 and used for passing the first positioning pin 501, and wear lines 701 are arranged on the side edges of the first metal conductive block 7, so that the wear degree of the first metal conductive block 7 can be visualized by observing the positions of the wear lines 701, and the positions of the wear lines 701 are the maximum wear positions of the first metal conductive block 7, and the first metal conductive block 7 needs to be replaced before the wear degree reaches the positions of the wear lines 701. The first metal conductive block 7 and the second metal conductive block 10 are in contact with each other, quick conduction is formed to form a welding loop, and therefore, copper is adopted as the material of the first metal conductive block 7 and the second metal conductive block 10 in the embodiment of the utility model.

[0034] With reference to Figure 3 The upper electrode mechanism 2 comprises an upper electrode base 8, a second cooling assembly 9 and a second metal conductive block 10. Four fixing holes are arranged on the upper electrode base 3, bolts pass through the fixing holes and are connected with T-shaped nuts 302 above the upper electrode base 8, and the other ends of the bolts are connected with circular limiting blocks and nuts below the upper electrode base 8. After the nuts are tightened, the T-shaped nuts 302 are fixed above the upper electrode base 8, and through the T-shaped nuts 302, a driving module matched with the T-shaped nuts 302 can realize quick replacement of the upper electrode mechanism 2.

[0035] A plurality of pin holes 301 are further arranged on the upper electrode base 8 and used for realizing quick and accurate switching of assembly tooling.

[0036] The second cooling assembly 9 is fixed below the upper electrode base 8, the second cooling assembly 9 is internally provided with a water cooling flow channel, the second cooling assembly 9 is externally provided with an inlet water connecting pipe 401 and an outlet water connecting pipe 402, the external inlet water connecting pipe 401 and the outlet water connecting pipe 402 are in communication with the internal water cooling flow channel, and cooling water is continuously introduced into the second cooling assembly 9 to quickly dissipate heat of the second metal conductive block 10.

[0037] Wear lines 701 are arranged on the side edges of the second metal conductive block 10, so that the wear degree of the second metal conductive block 10 can be visualized by observing the positions of the wear lines 701, and the positions of the wear lines 701 are the maximum wear positions of the second metal conductive block 10, and the second metal conductive block 10 needs to be replaced before the wear degree reaches the positions of the wear lines 701.

[0038] In the embodiment 2 of the utility model, with reference to Figure 4The utility model discloses concrete embodiment 2 on the basis of concrete embodiment 1 has increased a third positioning assembly 11, the third positioning assembly 11 with the structure of second positioning assembly 6 is similar, is equipped with third positioning pin 1101 and second limit block 1102, third positioning pin 1101 and the position of third positioning assembly 11 is at the relative position of first metal conductive block 7 and second positioning assembly 6. The shape of second limit block 1102 is compatible with the shape of the second component of footing assembly part.

[0039] In the concrete embodiment 2 of the utility model, when the projection welding is carried out on the welding product, the relative position of the first component of footing assembly part and the second component of footing assembly part can be selected to be on the left or on the right.

[0040] The application provides an automobile footing assembly automatic projection welding clamp, and the operation process is as follows:

[0041] 1, the first component of footing assembly part is positioned to the first positioning assembly, and the positioning hole is compatible with the first positioning pin, and the positioning column is compatible with the positioning groove of the first positioning assembly.

[0042] 2, the second component of footing assembly part is positioned to the second positioning assembly, one positioning hole is compatible with the first positioning pin, and the other positioning hole is compatible with the second positioning pin, and the shape is compatible with the limit block of the second positioning assembly.

[0043] 3, the driving module connected with the upper and lower electrode mechanisms is started, the upper electrode mechanism is driven to press down, and a welding loop is formed.

[0044] 4, the welding is started, and cooling water is continuously injected into the cooling assembly to cool the metal conductive block.

[0045] 5, the welding is completed, the upper electrode mechanism is driven to rise by the driving module, and the welded footing assembly part is taken out.

[0046] The application provides an automatic projection welding clamp for automobile foot assembly, which realizes quick replacement of the lower electrode mechanism and the upper electrode mechanism by arranging T-shaped nuts on the upper and lower electrode bases; realizes quick heat dissipation of the metal conductive block by arranging water cooling flow channels, water inlet connecting pipe orifices and water outlet connecting pipe orifices on the cooling assembly; realizes high-speed and accurate switching of the tooling by arranging pin holes on the lower electrode base and the upper electrode base; realizes quick replacement of the metal conductive block by arranging screw holes and fixing screws on the metal conductive block; realizes visualization of the wear degree of the metal conductive block by arranging wear lines on the metal conductive block; realizes accurate positioning of the welded product and sharing of the same type of automobile foot assembly part welding clamp by arranging positioning pins on the positioning assembly; and solves the problems of thermal deformation, assembly error and dynamic load in the welding process by adopting self-adaptive air floating assembly of the positioning pins on the second positioning assembly, thereby improving the welding quality, equipment life and production efficiency.

[0047] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automotive ground anchor assembly automatic projection welding fixture comprising a lower electrode mechanism and an upper electrode mechanism, characterized by, The lower electrode mechanism comprises a lower electrode base, a first cooling assembly, a positioning mechanism and a first metal conductive block; a T-shaped nut is arranged below the lower electrode base for quick replacement of the lower electrode mechanism; the first cooling assembly is fixed on the lower electrode base; The positioning mechanism comprises a first positioning assembly and a second positioning assembly; the first positioning assembly is fixed on the first cooling assembly; the second positioning assembly is fixed on the lower electrode base; the first positioning assembly and the second positioning assembly are both provided with positioning pins for positioning the welding product; The first metal conductive block is fixed on the first positioning assembly for quick conduction to form a welding loop; The upper electrode mechanism comprises an upper electrode base, a second cooling assembly and a second metal conductive block; a T-shaped nut is arranged above the upper electrode base for quick replacement of the upper electrode mechanism; the second cooling assembly is fixed below the upper electrode base; the second metal conductive block is fixed below the second cooling assembly.

2. An automatic projection welding jig for a ground anchor assembly for an automobile as set forth in claim 1, characterized in that, The first cooling assembly and the second cooling assembly are internally provided with water cooling flow channels, and externally provided with water inlet and outlet connecting pipe openings for quick heat dissipation of the projection welding clamp.

3. The automatic projection welding fixture for automobile ground assembly according to claim 1, characterized in that, The first metal conductive block and the second metal conductive block are provided with wear lines for visualizing the wear degree of the metal conductive block.

4. The automatic projection welding fixture for automobile ground assembly according to claim 1, characterized in that, The first metal conductive block is provided with a screw hole and a fixing screw for quick replacement of the first metal conductive block.

5. The automatic projection welding fixture for automobile ground leg assembly according to claim 1, characterized in that, The lower electrode base and the upper electrode base are both provided with pin holes for quick and accurate switching of tooling.

6. An automatic projection welding fixture for automobile ground leg assembly according to claim 1, characterized in that, The second positioning assembly further comprises a limiting block for limiting the welding product.

7. An automatic projection welding fixture for automobile ground leg assembly according to claim 1, characterized in that, The positioning pin on the first positioning assembly is assembled by self-adaptive air floating.

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