Automobile hinge-punching floating mechanism for welding line

Abstract

The utility model belongs to the automobile manufacturing technical field, concretely relates to a car punchs the hinge floating mechanism for welding line body, include: left side clamping mechanism, middle clamping mechanism, right side clamping mechanism and buffer mechanism, left side clamping mechanism is fixed on the first movable plate through left side second connecting block, middle clamping mechanism is fixed on the second movable plate through middle second connecting block, and second movable plate one end is fixedly connected with first movable plate, right side clamping mechanism is connected with the piston rod of cylinder through cylinder connecting plate, and cylinder is fixed in second movable plate side portion, buffer mechanism includes fixed support, spring, pin shaft and two shaft sleeves, the utility model discloses through setting left side clamping mechanism, middle clamping mechanism, right side clamping mechanism and the buffer mechanism that can provide floating buffer force, can effectively solve the problem that the sheet metal part and the hinge do not completely fit because of the precision fluctuation of stamping plate piece.

Description

Technical Field

[0001] This utility model belongs to the field of automobile manufacturing technology, specifically relating to a floating mechanism for automobile hinges used in welding lines. Background Technology

[0002] In the field of automotive manufacturing equipment technology, the positioning accuracy of door hinges in the body welding production line directly affects the subsequent assembly quality and structural stability of the whole vehicle. Therefore, the tooling mechanism used for hinge positioning is a key component in the welding process.

[0003] Currently, the industry mostly uses fixed mechanisms for positioning car door hinges. The positioning components of such mechanisms are in fixed positions and can only be rigidly positioned according to preset dimensions. However, in actual production, due to the inherent characteristics of the stamping process, the precision of car door panels often fluctuates, resulting in slight deviations (large or small) in their dimensions.

[0004] When a fixed positioning mechanism is used, fluctuations in sheet metal dimensions cannot be effectively compensated for: if the sheet metal is slightly larger, it will be squeezed during positioning, causing deformation; if the sheet metal is slightly smaller, gaps will appear between the hinge and the sheet metal. Both situations require rework and correction, and may even necessitate sheet metal repair of the deformed sheet metal. This not only increases labor time and wastes manpower, but may also affect production efficiency and product consistency due to repeated operations, becoming a prominent problem restricting the stability of the welding process. Utility Model Content

[0005] The purpose of this invention is to provide a floating mechanism for automotive hinges used in welding lines, in order to solve the problems existing in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a floating mechanism for automotive hinges used in welding lines, comprising: Left clamping mechanism, middle clamping mechanism, right clamping mechanism and buffer mechanism; The left clamping mechanism is fixed to the first movable plate by the left second connecting block; The intermediate clamping mechanism is fixed to the second movable plate by the intermediate second connecting block, and one end of the second movable plate is fixedly connected to the first movable plate; The right-side clamping mechanism is connected to the piston rod of the cylinder via a cylinder connecting plate, and the cylinder is fixed to the side of the second movable plate; The buffer mechanism includes a fixed support, a spring, a pin, and two bushings. The fixed support is located on one side of the first movable plate; The two bushings are respectively fixed to the fixed support and the first movable plate; One end of the pin is fixed inside the bushing of the fixed support, and the other end is slidably fitted inside the bushing of the first movable plate. The spring is sleeved on the pin, with its two ends abutting against two bushings respectively, so that the first movable plate obtains an elastic floating displacement to the outside.

[0007] Preferably, the left clamping mechanism includes a left clamping block, a left first connecting block and a left second connecting block connected in sequence, with the left second connecting block fixed to the first movable plate.

[0008] Preferably, the intermediate clamping mechanism includes an intermediate clamping block and an intermediate first connecting block, the intermediate first connecting block being fixed to an intermediate second connecting block, and the intermediate second connecting block being fixed to a second movable plate.

[0009] Preferably, the right-side clamping mechanism includes a right-side clamping block, a right-side first connecting block, a right-side second connecting block, and a cylinder connecting plate connected in sequence, with the cylinder connecting plate fixed to the piston rod of the cylinder.

[0010] Preferably, the first movable plate is provided with a first buffer block, and the cylinder connecting plate is provided with a second buffer block.

[0011] Preferably, there are two sets of buffer mechanisms, symmetrically distributed on both sides of the first movable plate.

[0012] The beneficial effects of this utility model are as follows: By setting a left clamping mechanism, a middle clamping mechanism, a right clamping mechanism, and a buffer mechanism that can provide floating buffer force, this utility model can effectively solve the problem of incomplete fit between sheet metal parts and hinges caused by fluctuations in the precision of stamped sheet metal parts. It avoids gaps or deformation caused by squeezing sheet metal parts during installation, thereby reducing subsequent rework and sheet metal repair processes, saving time and labor costs. At the same time, it reduces the precision requirements of stamped parts, achieving zero gap and zero indentation fit between hinges and stamped sheet metal parts, improving the efficiency and quality stability of automotive welding production. Attached Figure Description

[0013] Figure 1 This is a perspective view of this utility model; Figure 2 This is a perspective view of the present invention from another direction; Figure 3 This is a perspective view of the left-side clamping mechanism in this utility model; Figure 4 This is a perspective view of the intermediate clamping mechanism in this utility model; Figure 5 This is a perspective view of the right-side clamping mechanism in this utility model; Figure 6 This is a perspective view of the buffer mechanism in this utility model; Figure 7This is a cross-sectional view of the buffer mechanism in this utility model; Figure 8 This is a schematic diagram illustrating the application of this utility model; Figure 9 This is an enlarged view of the application of this utility model; Figure 10 This is a schematic diagram of the hinge in this utility model. Detailed Implementation

[0014] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0015] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0018] This utility model discloses a floating mechanism for automotive hinges used in welding lines, comprising a left clamping mechanism 1, a middle clamping mechanism 2, a right clamping mechanism 3, and a buffer mechanism 4.

[0019] The left clamping mechanism 1 consists of a left clamping block 11, a left first connecting block 12, and a left second connecting block 13. The left clamping block 11 is fixed to the upper part of the left first connecting block 12, the lower part of the left first connecting block 12 is fixed to the upper part of the left second connecting block 13, and the left second connecting block 13 is fixed to the first movable plate 5. This hierarchical fixing structure ensures that the left clamping block 11 can stably clamp the corresponding position of the hinge.

[0020] The intermediate clamping mechanism 2 includes an intermediate clamping block 21 and an intermediate first connecting block 22. The intermediate clamping block 21 is fixed on the upper part of the intermediate first connecting block 22, the intermediate first connecting block 22 is fixed on the intermediate second connecting block, the intermediate second connecting block is fixed on the second movable plate 6, and one end of the second movable plate 6 is fixed on one end of the first movable plate 5, so that the intermediate clamping mechanism 2 and the left clamping mechanism 1 form a linkage relationship and work together to position and clamp the hinge.

[0021] The right-side clamping mechanism 3 consists of a right-side clamping block 31, a right-side first connecting block 32, a right-side second connecting block 33, a cylinder connecting plate 34, and a cylinder 35. The right-side clamping block 31 is fixed to the right-side first connecting block 32, which is fixed to the right-side second connecting block 33. The right-side second connecting block 33 is fixed to the cylinder connecting plate 34, which is fixed to the piston rod of the cylinder 35. The cylinder 35 is fixed to the side of the second movable plate 6. Driven by the cylinder 35, the right-side clamping block 31 can clamp the right side of the hinge.

[0022] The buffer mechanism 4 includes a fixed support 41, a spring 42, a pin 43, and a bushing 44. The fixed support 41 is located on one side of the first movable plate 5. There are two bushings 44, which are respectively fixed to the first movable plate 5 and the fixed support 41. One end of the pin 43 is fixed to the bushing 44 fixed to the fixed support 41, and the other end of the pin 43 is slidably engaged with the bushing 44 fixed to the first movable plate 5. The spring 42 is sleeved on the pin 43, and the spring 42 always applies an outward force to the bushing 44. In this device, the buffer mechanism 4 includes two sets of pins 43, springs 42, and bushings 44 to enhance the buffering floating effect. In addition, a first buffer block 7 is fixed on the first movable plate 5, and a second buffer block 8 is fixed on the cylinder connecting plate 34 to further improve the buffering performance during operation.

[0023] During operation, the left clamping mechanism 1, the middle clamping mechanism 2, and the right clamping mechanism 3 work together to clamp and position the car door hinge. When there are fluctuations in the precision of the stamped sheet metal or changes in its dimensions, the buffer mechanism 4 plays a crucial role. Because the spring 42 always exerts an outward force on the bushing 44, and the pin 43 slides with the bushing 44 fixed on the first movable plate 5, the first movable plate 5 can drive the left clamping mechanism 1, the middle clamping mechanism 2, and the second movable plate 6 connected to the first movable plate 5 to float. This floating characteristic can adapt to changes in the size of the stamped sheet metal and automatically adjust the position of the clamping mechanism, thereby ensuring a perfect fit between the hinge and the stamped sheet metal, avoiding gaps or deformation caused by squeezing the sheet metal, and effectively solving a series of problems such as rework caused by precision issues of the stamped parts. At the same time, the first buffer block 7 and the second buffer block 8 can reduce the collision impact between the components during the operation of the mechanism, ensuring the stability and reliability of the mechanism's operation.

[0024] For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A floating hinge mechanism for automotive welding lines, characterized in that, include: Left clamping mechanism (1), middle clamping mechanism (2), right clamping mechanism (3) and buffer mechanism (4); The left clamping mechanism (1) is fixed to the first movable plate (5) by the left second connecting block (13); The intermediate clamping mechanism (2) is fixed to the second movable plate (6) by the intermediate second connecting block, and one end of the second movable plate (6) is fixedly connected to the first movable plate (5); The right clamping mechanism (3) is connected to the piston rod of the cylinder (35) through the cylinder connecting plate (34), and the cylinder (35) is fixed to the side of the second movable plate (6); The buffer mechanism (4) includes a fixed support (41), a spring (42), a pin (43), and two bushings (44). The fixed support (41) is located on one side of the first movable plate (5); Two bushings (44) are respectively fixed to the fixed support (41) and the first movable plate (5); One end of the pin (43) is fixed in the bushing of the fixed support (41), and the other end is slidably fitted in the bushing of the first movable plate (5). The spring (42) is sleeved on the pin (43), and its two ends abut against two bushings (44) respectively, so that the first movable plate (5) obtains an elastic floating displacement to the outside.

2. The floating mechanism according to claim 1, characterized in that: The left clamping mechanism (1) includes a left clamping block (11), a left first connecting block (12) and a left second connecting block (13) connected in sequence, with the left second connecting block (13) fixed to the first movable plate (5).

3. The floating mechanism according to claim 1, characterized in that: The intermediate clamping mechanism (2) includes an intermediate clamping block (21) and an intermediate first connecting block (22). The intermediate first connecting block (22) is fixed to the intermediate second connecting block, and the intermediate second connecting block is fixed to the second movable plate (6).

4. The floating mechanism according to claim 1, characterized in that: The right clamping mechanism (3) includes a right clamping block (31), a right first connecting block (32), a right second connecting block (33) and a cylinder connecting plate (34) connected in sequence. The cylinder connecting plate (34) is fixed to the piston rod of the cylinder (35).

5. The floating mechanism according to claim 1, characterized in that: The first movable plate (5) is provided with a first buffer block (7), and the cylinder connecting plate (34) is provided with a second buffer block (8).

6. The floating mechanism according to claim 1, characterized in that: The number of buffer mechanisms (4) is two sets, symmetrically distributed on both sides of the first movable plate (5).

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