Aluminum alloy frame type vehicle body welding clamp

Abstract

The utility model discloses an aluminum alloy frame type vehicle body welding clamp which comprises a mounting plate, a rotating air cylinder is arranged on one side of the mounting plate, the rotating air cylinder is connected with a first pressing arm and a second pressing arm, the first pressing arm is located above the mounting plate, the second pressing arm is located on the other side of the mounting plate, and a pressing structure is arranged on the first pressing arm. The aluminum alloy frame type vehicle body welding clamp is high in fitting degree with a sectional material piece and high in fixing stability, and welding quality is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and specifically relates to an aluminum alloy frame type vehicle body welding fixture. Background Art

[0002] The appearance and application of the new aluminum alloy frame body structure is currently the first in the automotive industry. The parts positioned by the fixture of this structure are generally aluminum alloy profiles. Since the aluminum alloy profile has a certain width, the fixture design also requires that the length of the positioning and clamping block is generally not less than 80% of the profile width. In the actual application of the MIG welding process, the clamping block and the profile part need to be surface-to-surface fitted. However, due to the manufacturing accuracy and deformation of the parts after welding, the clamping block and the profile part cannot be completely fitted, and can only be in point contact or line contact, resulting in reduced stability of the body frame clamping, affecting the welding strength, and thus affecting the quality of the body structure.

[0003] The utility model patent with announcement number CN203599717U was published on May 21, 2014, and is named as a special fixture for laser welding of aluminum body roof. The special fixture for laser welding of aluminum body roof includes a cylinder, which is arranged on the main frame, and the cylinder is connected to one end of the rod through a connecting rod. The other end of the rod is also arranged on the main frame through a rotating shaft and is located below the cylinder; one side of the L-shaped positioning block is arranged at the bottom of one end of the rod, and the other side of the L-shaped positioning block is connected to the pressure block through a square positioning block. An air inlet is arranged on the side of the pressure block, and an air outlet is arranged in the groove at the bottom of the pressure block. The special fixture for laser welding of aluminum body roof cannot improve the fit with the profile part, and the fixing effect is limited. Utility Model Content

[0004] The utility model aims to provide an aluminum alloy frame type body welding fixture with high fitting degree with profile parts, high fixing stability and guaranteed welding quality in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The aluminum alloy frame type body welding fixture includes a mounting plate, a rotating cylinder is provided on one side of the mounting plate, the rotating cylinder is connected to a first pressing arm and a second pressing arm, the first pressing arm is located above the mounting plate, the second pressing arm is located on the other side of the mounting plate, a clamping structure is provided on the first pressing arm, and a positioning structure is provided on the mounting plate and the second pressing arm.

[0007] The clamping structure includes a first clamping block and a second clamping block, the first clamping block is arranged at the end of the first clamping arm, and the second clamping block is arranged at the side of the first clamping arm; the positioning structure includes a first positioning block and a second positioning block, the first positioning block is arranged at the top of the mounting plate, and the second positioning block is arranged at the end of the second clamping arm.

[0008] The first pressing block is located above the mounting plate, the second pressing block and the second positioning block are at the same height, the first pressing block and the first positioning block are both arranged horizontally, and the second pressing block and the second positioning block are both arranged vertically.

[0009] The first pressing block and the second pressing block are both detachably connected to the first pressing arm, the first positioning block is detachably connected to the top of the mounting plate, and the second positioning block is detachably connected to the second pressing arm.

[0010] The first pressing block and the second pressing block are both provided with threaded holes, and pin holes are provided on both sides of the threaded holes.

[0011] The ends of the first pressing block and the second pressing block are both provided with rounded corners.

[0012] A first connecting hole is provided at one end of the first pressing arm, and a second connecting hole is provided at one end of the second pressing arm. Both the first connecting hole and the second connecting hole are square structures.

[0013] The first pressing block, the second pressing block, the first positioning block and the second positioning block are all rectangular parallelepiped structures.

[0014] The technical effect of the utility model is as follows: the aluminum alloy frame type body welding fixture of the utility model is adopted to solve the problem that the current aluminum alloy frame type body structure welding fixture has a low fit with the profile parts when in use, and the rotating cylinder is designed to drive the two pressing arms to realize the clamping and fixing of the profile parts, and under the action of the pressing block and the positioning block, the pressing and positioning functions are provided for the welding operation, the fit between the profile parts and the pressing block is improved, the welding stability of the aluminum body profile parts is high, and the welding strength and the quality of the body are reliable; and the pressing is chamfered to reduce the pressing area and increase the pressure, so as to achieve a better fit between the pressing block and the profile parts; the overall structural design is reasonable, the use is convenient and reliable, and the applicability is good, and it can be widely used in the aluminum alloy frame type body structure fixture fixing solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification includes the following drawings, which show the following contents:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the aluminum alloy frame type body welding fixture of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the first pressing block of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the second pressing block of the utility model.

[0019] Markings in the figure are: 1. Mounting plate; 2. Rotating cylinder; 3. First pressing arm; 4. Second pressing arm; 5. First clamping block; 6. Second clamping block; 7. First positioning block; 8. Second positioning block; 9. First connecting hole; 10. Second connecting hole; 11. Rounded corner. DETAILED DESCRIPTION

[0020] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0021] like Figure 1 As shown, the aluminum alloy frame type body welding fixture includes a mounting plate 1, a rotating cylinder 2 is provided on one side of the mounting plate 1, the rotating cylinder 2 is connected to a first pressing arm 3 and a second pressing arm 4, the first pressing arm 3 is located above the mounting plate 1, the second pressing arm 4 is located on the other side of the mounting plate 1, a clamping structure is provided on the first pressing arm 3, and a positioning structure is provided on the mounting plate 1 and the second pressing arm 4. The mounting plate 1 is the base plate of the fixture positioning unit, providing accurate installation positions for components such as the pressing arm, the rotating cylinder 2, the clamping block and the positioning block; the rotating cylinder 2 is the power device of the fixture, providing the clamping force; the clamping block is the clamping block of the fixture positioning part, ensuring that the part fits with the reference block; the positioning block is the reference block of the fixture positioning part; the pressing arm serves as a connecting plate connecting the rotating cylinder 2 and the clamping block. The rotary cylinder 2 is used to drive the two pressing arms to rotate. The two pressing arms rotate toward the mounting plate 1 to press the profile. After the two pressing arms rotate and reset, the space for placing the profile can be opened. Through the setting of the pressing block and the positioning block, the pressing and positioning functions are provided for the welding process of the profile. After comparative testing, the non-fitting degree is reduced from the original 20% to 5% after using the welding fixture.

[0022] like Figure 1 As shown, the clamping structure includes a first clamping block 5 and a second clamping block 6, the first clamping block 5 is arranged at the end of the first pressing arm 3, and the second clamping block 6 is arranged at the side of the first pressing arm 3; the positioning structure includes a first positioning block 7 and a second positioning block 8, the first positioning block 7 is arranged at the top of the mounting plate 1, and the second positioning block 8 is arranged at the end of the second pressing arm 4. The first clamping block 5 and the second clamping block 6 are fixed by the clamping surface of the first clamping block 5 and the second clamping block 6 and the profile part. The first positioning block 7 can be used as a preliminary positioning reference when the profile part is placed, and the second positioning block 8 provides another orientation positioning reference for the profile part to ensure that the position of the profile part after being clamped and fixed is accurate; when the profile part is fixed, it is between the two clamping blocks and the two positioning blocks. Under the clamping and positioning action of the above components, the clamping stability of the profile part is high, and the fit with the above components is better when it is fixed. Even if the profile part has manufacturing accuracy errors or deformation occurs during welding, reliable fit can be guaranteed, ensuring reliable welding quality of the aluminum body.

[0023] like Figure 1 As shown, the first clamping block 5 is located above the mounting plate 1, the second clamping block 6 and the second positioning block 8 are at the same height, the first clamping block 5 and the first positioning block 7 are both arranged horizontally, and the second clamping block 6 and the second positioning block 8 are both arranged vertically. The above structure is used for fixing the profile, the first clamping block 5 and the first positioning block 7 are staggered and corresponded on the horizontal plane, and the position distribution of the above clamping blocks and positioning blocks realizes the positioning or fixing of the profile in four directions without affecting the placement of the profile, improving the clamping and fixing effect, and ensuring the stability of the profile during welding.

[0024] like Figures 1 to 3 As shown, the first pressing block 5 and the second pressing block 6 are both detachably connected to the first pressing arm 3, the first positioning block 7 is detachably connected to the top of the mounting plate 1, and the second positioning block 8 is detachably connected to the second pressing arm 4. Both the pressing block and the positioning block are detachably connected, which is convenient for maintenance and replacement of components.

[0025] like Figure 2 and Figure 3 As shown, the first clamping block 5 and the second clamping block 6 are both provided with threaded holes, and pin holes are provided on both sides of the threaded holes. The first positioning block 7 and the second positioning block 8 also use a combination of threaded holes and pin holes to achieve installation and connection. The two sides of the clamping block are respectively a fastening surface and a clamping surface. The fastening surface is a fixed surface connected to the pressure arm. The threaded hole and the cylindrical pin hole are both provided on the fastening surface. The fastening surface is completely fitted with the pressure arm. The bolt hole is the bolt hole for locking the clamping block, and the cylindrical pin hole provides a positioning function for the installation of the clamping block; the clamping surface is the surface where the clamp directly fits the part, and the fillet 11 is provided on the clamping surface. When the threaded hole and the pin hole are used synchronously, the clamping block is installed to the exact position to ensure the flatness of the clamping surface, and no point contact or line contact will be generated. When clamping the profile, the clamping force on the profile can be ensured to be consistent, so that the clamped profile is fixed and stable, and the welding quality is guaranteed.

[0026] like Figure 2 and Figure 3 As shown, the ends of the first pressing block 5 and the second pressing block 6 are both provided with rounded corners 11. The rounded corners 11 are provided on the pressing block to reduce the pressing area of ​​the profile and increase the pressure, thereby achieving a better fit between the pressing block and the profile; and the rounded corners 11 also reduce the stress at the end of the pressing block, reduce the deformation or damage caused by the force, and extend its service life.

[0027] like Figure 1As shown, a first connection hole 9 is provided at one end of the first pressing arm 3, and a second connection hole 10 is provided at one end of the second pressing arm 4, and both the first connection hole 9 and the second connection hole 10 are square structures. The first connection hole 9 and the second connection hole 10 are both used to connect with the rotating cylinder 2. The two connection holes are designed as square structures, and the connection is reliable without sliding, which can ensure that the rotating cylinder 2 drives the two pressing arms to rotate accurately.

[0028] like Figures 1 to 3 As shown, the first pressing block 5, the second pressing block 6, the first positioning block 7 and the second positioning block 8 are all rectangular parallelepiped structures. Designing the above components as rectangular parallelepiped structures can improve the accuracy of installation, better fit with the profile parts, and reduce the processing and maintenance and replacement costs.

[0029] The aluminum alloy frame type body welding fixture solves the problem that the current aluminum alloy frame type body structure welding fixture has a low fit with the profile parts when in use. The rotating cylinder 2 is designed to drive the two pressing arms to realize the clamping and fixing of the profile parts. Under the action of the pressing block and the positioning block, the clamping and positioning functions are provided for the welding operation, and the fit between the profile parts and the pressing block is improved. The welding stability of the aluminum body profile parts is high, and the welding strength and the quality of the body are reliable. The pressing is rounded 11 to reduce the pressing area and increase the pressure, so as to achieve a better fit between the pressing block and the profile parts. The overall structural design is reasonable, the use is convenient and reliable, and the applicability is good. It can be widely used in the aluminum alloy frame type body structure fixture fixing solution.

[0030] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An aluminum alloy frame body welding fixture, characterized in that: The invention comprises a mounting plate (1), a rotating cylinder (2) is provided on one side of the mounting plate (1), the rotating cylinder (2) is connected to a first pressing arm (3) and a second pressing arm (4), the first pressing arm (3) is located above the mounting plate (1), the second pressing arm (4) is located on the other side of the mounting plate (1), a clamping structure is provided on the first pressing arm (3), and a positioning structure is provided on the mounting plate (1) and the second pressing arm (4).

2. The aluminum alloy frame type body welding fixture according to claim 1, characterized in that: The clamping structure comprises a first clamping block (5) and a second clamping block (6), wherein the first clamping block (5) is arranged at the end of the first clamping arm (3), and the second clamping block (6) is arranged at the side of the first clamping arm (3); the positioning structure comprises a first positioning block (7) and a second positioning block (8), wherein the first positioning block (7) is arranged at the top end of the mounting plate (1), and the second positioning block (8) is arranged at the end of the second clamping arm (4).

3. The aluminum alloy frame type body welding fixture according to claim 2, characterized in that: The first pressing block (5) is located above the mounting plate (1); the second pressing block (6) and the second positioning block (8) are at the same height; the first pressing block (5) and the first positioning block (7) are both arranged horizontally; and the second pressing block (6) and the second positioning block (8) are both arranged vertically.

4. The aluminum alloy frame type body welding fixture according to claim 2 or 3, characterized in that: The first pressing block (5) and the second pressing block (6) can both be detachably connected to the first pressing arm (3), the first positioning block (7) can be detachably connected to the top of the mounting plate (1), and the second positioning block (8) can be detachably connected to the second pressing arm (4).

5. The aluminum alloy frame type vehicle body welding fixture according to claim 3, characterized in that: The first pressing block (5) and the second pressing block (6) are both provided with threaded holes, and pin holes are provided on both sides of the threaded holes.

6. The aluminum alloy frame type body welding fixture according to claim 5, characterized in that: The ends of the first pressing block (5) and the second pressing block (6) are both provided with rounded corners (11).

7. The aluminum alloy frame type vehicle body welding fixture according to claim 1, characterized in that: A first connection hole (9) is provided at one end of the first pressing arm (3), and a second connection hole (10) is provided at one end of the second pressing arm (4); both the first connection hole (9) and the second connection hole (10) are square structures.

8. The aluminum alloy frame type vehicle body welding fixture according to claim 2, characterized in that: The first pressing block (5), the second pressing block (6), the first positioning block (7) and the second positioning block (8) are all rectangular parallelepiped structures.

Images