Opposite pressing mechanism with welding position capable of being completely opened

Abstract

The utility model belongs to the technical field of welding positioning tools, and particularly discloses an opposite pressing mechanism with a welding position capable of being completely opened, which comprises a support, a pressing arm and a turnover supporting rod hinged on the support, a turnover driving device used for driving the pressing arm to turn over in the forward direction installed on the support, and a first connecting rod hinged on the lower side of the pressing arm and used for transmitting power. The turnover supporting rod is fixedly connected with a second connecting rod for driving the turnover supporting rod to reversely turn over, and the upper end of the second connecting rod is hinged to the first connecting rod; the lower side of the pressing arm is fixedly connected with an upper positioning assembly used for positioning, the upper side of the overturning supporting rod is fixedly connected with a lower positioning assembly matched with the upper positioning assembly, quick positioning and clamping of the body-in-white part can be achieved, the welding efficiency and quality are effectively improved, and meanwhile the welding quality is improved. Due to the completely-opened design, the welding gun can be more easily close to a welding part, the welding dead angle is reduced, and the welding flexibility and comprehensiveness are further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to welding positioning tooling technical field, concretely relates to a kind of pair of pressure mechanism with welding position can be completely opened. BACKGROUND

[0002] White body is successively welded by various dispersed parts, in the welding process, to guarantee the precision and quality of automobile body, welding tooling is usually used to assist welding. Welding tooling has positioning mechanism, which can determine the position of workpiece and fix it to facilitate welding. With the progress of society and economic development, the demand for cars is increasing, which leads to the need for car manufacturers to improve production efficiency to meet market demand.

[0003] The existing white body is welded by various dispersed parts, and when welding tooling is used for auxiliary welding, the pressing block and positioning block of the welding tooling are easily located on the welding point, which causes the welding point to be moved to the next welding station for welding. This will increase unnecessary repair welding stations, reduce production efficiency and increase production and maintenance costs. SUMMARY

[0004] To solve the problems of limited white body welding point position, many welding dead angles and low welding efficiency in the prior art, a pair of pressure mechanism with welding position completely opened is provided. The utility model provides the following technical solutions:

[0005] A pair of pressure mechanism with welding position completely opened, comprising a bracket, a pressing arm and a turnover support rod are hinged on the bracket, a turnover driving device for driving the pressing arm to turn over in a positive direction is installed on the bracket, a first connecting rod for transmitting power is hinged to the lower side of the pressing arm, a second connecting rod for driving the turnover support rod to turn over in a reverse direction is fixedly connected to the turnover support rod, and the upper end of the second connecting rod is hinged to the first connecting rod; an upper positioning assembly for positioning is fixedly connected to the lower side of the pressing arm, and a lower positioning assembly cooperating with the upper positioning assembly is fixedly connected to the upper side of the turnover support rod.

[0006] Preferably, the turnover driving device uses a swing arm cylinder, and the pressing arm is fixedly connected to the output end of the swing arm cylinder.

[0007] Preferably, the upper positioning assembly includes an upper limiting block, the lower positioning assembly includes a lower limiting block opposite to the upper limiting block in turnover, the lower side of the upper limiting block is provided with an upper limiting groove, and the upper side of the lower limiting block is provided with a lower limiting convex corresponding to the upper limiting groove.

[0008] Preferably, the upper limiting groove is an arc-shaped groove.

[0009] Preferably, the upper positioning assembly includes an upper pressing block, and the lower positioning assembly includes a lower pressing block opposite to the upper pressing block in turnover.

[0010] Preferably, the upper pressing block and the lower pressing block are both L-shaped.

[0011] Preferably, an upper gasket is arranged between the upper pressing block and the pressing arm, and a lower gasket is arranged between the lower pressing block and the turnover support rod.

[0012] Preferably, the support frame comprises a base, a fixing frame and a driving mounting frame which are fixedly connected with each other, the turnover support rod is hinged to the fixing frame, and the turnover driving device is mounted to the driving mounting frame.

[0013] Preferably, the fixing frame comprises a left side plate and a right side plate, and a space for accommodating the first connecting rod and the second connecting rod is formed between the left side plate and the right side plate, and the turnover support rod is hinged to the left side plate and the right side plate respectively.

[0014] Preferably, the first connecting rod is hinged with the second connecting rod on both left and right sides.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The device can realize quick positioning and clamping of the body-in-white parts through the pressing arm and the turnover support rod, effectively improving the welding efficiency and quality.

[0017] 2. The structure can be completely opened, so that the welding gun can more easily access the welding position, reducing the welding dead angle and further improving the flexibility and comprehensiveness of welding.

[0018] 3. The body-in-white can complete the maximum welding work on the welding tool, reducing the number and replacement frequency of the welding tool and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the structure schematic diagram of the completely opened state of the utility model;

[0020] Fig. 2 is the structure schematic diagram of the pressing state of the utility model;

[0021] Fig. 3 is the working state schematic diagram of the utility model;

[0022] In the drawings, 1 is a support frame; 11 is a base; 12 is a fixing frame; 121 is a left side plate; 122 is a right side plate; 13 is a driving mounting frame; 2 is a pressing arm; 3 is a turnover support rod; 31 is a long pin shaft; 4 is a turnover driving device; 5 is a first connecting rod; 6 is a second connecting rod; 7 is an upper positioning assembly; 71 is an upper limiting block; 72 is an upper pressing block; 8 is a lower positioning assembly; 81 is a lower limiting block; 82 is a lower pressing block; 9 is an upper gasket; and 10 is a lower gasket. DETAILED DESCRIPTION

[0023] The directional terms mentioned in the following embodiments, such as "up", "down", "left", and "right", are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the invention of this utility model.

[0024] like Figs. 1-3 As shown, a fully openable clamping mechanism for welding positions includes a bracket 1, a pressure arm 2 and a flip support rod 3 hinged to the bracket 1, a flip drive device 4 for driving the pressure arm 2 to flip forward on the bracket 1, a first connecting rod 5 for transmitting power hinged to the lower side of the pressure arm 2, a second connecting rod 6 for driving the flip support rod 3 to flip in the opposite direction fixedly connected to the flip support rod 3, the upper end of the second connecting rod 6 being hinged to the first connecting rod 5; an upper positioning component 7 for positioning is fixedly connected to the lower side of the pressure arm 2, and a lower positioning component 8 cooperating with the upper positioning component 7 is fixedly connected to the upper side of the flip support rod 3. This mechanism enables rapid positioning and clamping of body-in-white parts, effectively improving welding efficiency and quality. At the same time, its fully open design allows the welding torch to more easily approach the welding area, reducing welding dead angles and further enhancing the flexibility and comprehensiveness of welding.

[0025] Furthermore, the tilting drive device 4 adopts a swing arm cylinder, and the pressure arm 2 is fixedly connected to the output end of the swing arm cylinder. The use of the swing arm cylinder makes the tilting action of the pressure arm 2 more stable and reliable, and can quickly respond to control signals, thereby realizing the rapid opening and closing of the pressure mechanism and improving work efficiency.

[0026] Furthermore, the upper positioning component 7 includes an upper limit block 71, and the lower positioning component 8 includes a lower limit block 81 that flips opposite to the upper limit block 71. The lower side of the upper limit block 71 is provided with an upper limit groove, and the upper side of the lower limit block 81 is provided with a lower limit protrusion corresponding to the upper limit groove. The cooperative design of the limit groove and the lower limit block 81 ensures the stability and accuracy of the body-in-white parts during the clamping process, effectively preventing displacement of the parts during welding and improving welding quality and precision.

[0027] Furthermore, the upper limit groove is an arc-shaped groove, and the lower limit protrusion is an arc-shaped protrusion. The lower limit protrusion and the arc surface of the upper limit groove make surface contact, so that the upper limit block 71 and the lower limit block 81 can better adapt to the curved shape of the body-in-white part when in contact, thereby increasing the uniformity and stability of clamping.

[0028] Further, the upper positioning assembly 7 comprises an upper pressing block 72, and the lower positioning assembly 8 comprises a lower pressing block 82 which is reversely opposite to the upper pressing block 72. The cooperation of the upper pressing block 72 and the lower pressing block 82 not only realizes the clamping function of the body-in-white parts, but also can offset the thermal stress generated in the welding process to a certain extent, thereby protecting the parts from being damaged. The upper pressing block 72 and the lower pressing block 82 are both L-shaped, so that they can better fit the edges of the body-in-white parts in the clamping process, thereby improving the reliability and stability of clamping.

[0029] Further, the upper pressing block 72 and the pressing arm 2 are provided with an upper gasket 9, and the lower pressing block 82 and the overturning support rod 3 are provided with a lower gasket 10. The number of the upper gasket 9 and the lower gasket 10 can be adjusted to adjust the upper and lower positions, thereby ensuring the accuracy of the mechanism due to the error of machining and assembly.

[0030] Further, the bracket 1 comprises a base 11, a fixed frame 12 and a driving mounting frame 13 which are fixedly connected with each other. The base 11 can be externally fixed on other racks. The overturning support rod 3 is hinged to the fixed frame 12, and the overturning driving device 4 is mounted on the driving mounting frame 13.

[0031] Further, the fixed frame 12 comprises a left side plate 121 and a right side plate 122. The left side plate 121 and the right side plate 122 form a space for accommodating the first connecting rod 5 and the second connecting rod 6. The overturning support rod 3 is hinged to the left side plate 121 and the right side plate 122 respectively. The design of the space makes the first connecting rod 5 and the second connecting rod 6 move smoothly, thereby avoiding the interference and conflict between the components and improving the reliability and stability of the mechanism.

[0032] Further, the first connecting rod 5 is hinged with the second connecting rod 6 on both sides, so that the overturning support rod 3 can move more stably and uniformly in the overturning process, thereby improving the accuracy and stability of clamping.

[0033] The working principle is as follows: the welding fixture assembly part clamping unit is a common welding clamping, and the device is used at the welding point; when in use, all clamping units of the welding fixture are in an open state, the body-in-white parts are placed on the welding fixture by manual / automatic equipment, after the parts are detected to be in place by the inductive switch on the welding fixture, the clamping units can be controlled by the control program or the line edge button to clamp in sequence, when the clamping is completed, the manual / automatic equipment with the welding gun carries out welding, when the welding of the non-occluded welding points is completed, the body-in-white parts are fusion welded together, and the strength is increased, at this time, the opening and closing mechanism of the welding position which can be completely opened is opened by the control program or the line edge button, and the other common welding clamping units remain clamped to ensure the position of the body-in-white parts, when the opening and closing mechanism of the welding position which can be completely opened is opened, the manual / automatic equipment with the welding gun continues to carry out welding, which can ensure that the body-in-white completes the maximum welding work on the welding fixture and then builds the welding fixture, reduces the cost, and improves the efficiency.

[0034] The movement mode is as follows: when the opening and closing mechanism of the welding position which can be completely opened is in a clamped state, the swing arm cylinder receives an opening signal, the swing arm of the swing arm cylinder rotates, drives the rotation of the pressure arm 2, and the upper pressing block 72, the upper limit block 71 and the first connecting rod 5 connected to the pressure arm 2 also rotate. The middle part of the turnover support rod 3 is provided with a long pin shaft 31 connected with the fixed frame 12, the long pin shaft 31 can ensure that the turnover support rod 3 rotates around the long pin shaft 31, and the rotation of the turnover support rod 3 drives the movement of the lower pressing block 82 and the lower limit block 81 installed thereon. When the first connecting rod 5 moves, the turnover support rod 3 rotates around the long pin shaft 31. When the swing arm cylinder swing arm opening is completed, the upper pressing block 72 and the lower pressing block 82 are also opened to the maximum state and separated from the body-in-white, and a position is left for the welding gun to ensure the welding space. When the opening and closing mechanism of the welding position which can be completely opened is in an open state, the swing arm cylinder receives a clamping signal, the swing arm of the swing arm cylinder rotates, drives the rotation of the pressure arm 2, and the upper pressing block 72, the upper limit block 71 and the first connecting rod 5 connected to the pressure arm 2 also rotate. The middle part of the turnover support rod 3 is provided with a long pin shaft 31 connected with the fixed frame 12, the long pin shaft 31 can ensure that the turnover support rod 3 rotates around the long pin shaft 31, and the rotation of the turnover support rod 3 drives the movement of the lower pressing block 82 and the lower limit block 81 installed thereon. When the first connecting rod 5 moves, the turnover support rod 3 rotates around the long pin shaft 31. When the swing arm cylinder swing arm clamping is completed, the upper pressing block 72 and the lower pressing block 82 also contact the body-in-white and provide a pressing force, which ensures that the body-in-white parts do not displace during welding to ensure the welding quality and precision.

Claims

1. A press that can be completely opened at the welding station, characterized in that, The utility model provides a kind of turnover device, including support (1), the support (1) is hinged with pressure arm (2) and overturning support rod (3), the support (1) is installed for driving pressure arm (2) positive overturning overturning drive device (4), the lower side of the pressure arm (2) is hinged with the first connecting rod (5) for power transmission, the overturning support rod (3) is fixedly connected with the second connecting rod (6) with overturning support rod (3) reverse overturning, the second connecting rod (6) upper end is hinged to first connecting rod (5);The lower side of the pressure arm (2) is fixedly connected with the upper positioning assembly (7) for positioning, the upper side of the overturning support rod (3) is fixedly connected with the lower positioning assembly (8) matched with upper positioning assembly (7).

2. The press according to claim 1, wherein The overturning drive device (4) adopts swing arm cylinder, and the pressure arm (2) is fixedly connected to the output end of the swing arm cylinder.

3. The press according to claim 1, wherein The upper positioning assembly (7) includes an upper limiting block (71), and the lower positioning assembly (8) includes a lower limiting block (81) opposite to the upper limiting block (71) in overturning, the lower side of the upper limiting block (71) is provided with an upper limiting groove, and the upper side of the lower limiting block (81) is provided with a lower limiting convex corresponding to the upper limiting groove.

4. The press according to claim 3, wherein The upper limiting groove is an arc-shaped groove.

5. The press according to claim 1 or 3, wherein The upper positioning assembly (7) includes an upper pressing block (72), and the lower positioning assembly (8) includes a lower pressing block (82) opposite to the upper pressing block (72) in overturning.

6. The press according to claim 5, wherein The upper pressing block (72) and the lower pressing block (82) are both L-shaped.

7. The press according to claim 5, wherein An upper gasket (9) is arranged between the upper pressing block (72) and the pressure arm (2), and a lower gasket (10) is arranged between the lower pressing block (82) and the overturning support rod (3).

8. The fully openable pinch press according to claim 1, wherein, The support (1) includes a base (11), a fixed frame (12) and a drive mounting frame (13) fixedly connected with each other, the overturning support rod (3) is hinged to the fixed frame (12), and the overturning drive device (4) is mounted to the drive mounting frame (13).

9. The press according to claim 8, wherein The fixed frame (12) includes a left side plate (121) and a right side plate (122), and a space for accommodating the first connecting rod (5) and the second connecting rod (6) is formed between the left side plate (121) and the right side plate (122), and the overturning support rod (3) is hinged to the left side plate (121) and the right side plate (122) on both sides respectively.

10. The press according to claim 1 or 9, wherein The first connecting rod (5) is hinged with the second connecting rod (6) on both sides.

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