A welding clamping fixture

Abstract

This utility model relates to the field of welding fixture technology, and provides a welding clamping fixture, including an inner support unit and an outer support unit. The inner support unit includes a cylinder, a start switch, a fixed frame, and a placement platform, with the fixed frame having a placement plane. The outer support unit includes a workpiece abutment and an outer frame. When the housing is placed on the fixed frame, the cylinder is located inside the housing. The start switch controls the cylinder to abut the housing from the inside out. Since the housing is fitted onto the fixed frame, it can cooperate with the cylinder to provide lateral abutment support, thus achieving internal support. The outer side abuts the workpiece, moving it towards the fixed frame for clamping, forming a vertical abutment limit, thus providing external support. In this way, with dual fixation in both the lateral and vertical directions, the housing remains stable during welding, avoiding deformation or displacement caused by uneven force, thereby improving welding quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically to a welding clamping tool. Background Technology

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature, or high pressure. During welding, the workpiece and solder melt to form a molten zone, and the weld pool cools and solidifies to form a bond between the materials. Pressure is usually applied during this process. There are many energy sources for welding, including gas flames, electric arcs, lasers, electron beams, friction, and ultrasound. Today, with the widespread application of welding robots in industrial applications, researchers are still delving into the essence of welding and continuing to develop new welding methods to further improve weld quality.

[0003] During welding, the workpiece to be welded needs to be fixed in a limiting manner to ensure accurate placement of the welding area and guarantee weld quality. However, when welding existing shell-type workpieces, if they are only clamped or fixed from the outside in, it is easy to cause problems such as dents on the shell surface, which not only affects the weld quality but also easily damages the shell. Utility Model Content

[0004] The purpose of this utility model is to provide a welding clamping fixture that improves the problem that existing welding fixtures easily cause dents and damage to box-shaped workpieces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welding clamping fixture, comprising:

[0006] An inner support unit includes at least one cylinder and a start switch for opening or closing the cylinder; the inner support unit also includes a fixing frame for mounting the cylinder and cooperating with the cylinder to abut and clamp it, and a placement platform disposed at one end of the fixing frame for mounting the start switch, the top surface of the fixing frame having a placement plane; and

[0007] The external support unit includes several abutment workpieces that are clamped in cooperation with the placement plane, and an external frame for mounting the abutment workpieces.

[0008] Preferably, multiple cylinders are arranged side by side, and the multiple cylinders are arranged in the same direction.

[0009] Preferably, multiple cylinders are arranged side by side, and the multiple cylinders are arranged in opposite directions.

[0010] Preferably, the width of the fixing frame is smaller than the width of the inner hole of the workpiece, and the external frame is provided with a spacing greater than the width of the workpiece.

[0011] Preferably, the abutting workpiece includes a lifting bracket, an abutting bolt, and a spring sleeved on the abutting bolt. The lifting bracket is provided with a mounting part parallel to the placement plane. The abutting bolt is disposed through the mounting part, and the spring is disposed between the through end of the abutting bolt and the mounting part, and is kept in a state of providing elastic force to the through end of the abutting bolt.

[0012] Preferably, the bolt has at least one transversely penetrating limiting pin on its threaded body, and the mounting portion has a slotted hole through which the limiting pin passes.

[0013] Preferably, multiple limiting pins are provided, and an included angle is provided between adjacent limiting pins, the angle being between 0 and 180°.

[0014] Preferably, a single-axis cylinder and a top pressure member are provided on the drive shaft of the single-axis cylinder at the other end of the fixing frame.

[0015] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] 1. This utility model places the housing on a fixed frame. The cylinder is located inside the housing. Activating the switch controls the cylinder to push against the housing from the inside out. Since the housing is fitted onto the fixed frame, it can work with the cylinder to provide lateral support, thus achieving internal support. The outer side, by pushing the workpiece towards the fixed frame, forms a vertical limit, creating external support. In this way, with dual lateral and vertical fixation, the housing remains stable during welding, preventing deformation or displacement due to uneven stress, thereby improving welding quality and efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the welding clamping fixture of the present invention in the state of clamping the workpiece;

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the welding clamping fixture described in this utility model;

[0020] Figure 4 This is a schematic diagram of the welding clamping fixture described in this utility model from another perspective;

[0021] Figure 5 This is a cross-sectional view of the welding clamping fixture described in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Internal support unit; 101. Cylinder; 102. Start switch; 103. Fixing bracket;

[0024] 104. Placement platform; 1031. Placement plane; 1032. Single-axis cylinder; 1033. Top pressing component;

[0025] 20. External support unit; 201. Top abutment workpiece; 202. External frame;

[0026] 2011, Lifting bracket; 2012, Top bolt; 2013, Spring; 2014, Mounting part;

[0027] 2015, Limit pin; 2016, Waist-shaped hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 utility model according to the specific circumstances.

[0032] Example

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment provides a welding clamping fixture, including an inner support unit 10 and an outer support unit 20. The inner support unit 10 includes at least one cylinder 101 and a start switch 102 for opening or closing the cylinder 101. The start switch 102 can be a manual valve switch connected to the air supply pipe of the cylinder 101. The inner support unit 10 is also provided with a fixing frame 103 for mounting the cylinder 101 and cooperating with the cylinder 101 to abut and clamp, and a placement platform 104 provided at one end of the fixing frame 103 for mounting the start switch 102. The top surface of the fixing frame 103 is provided with a placement plane 1031. The outer support unit 20 includes a plurality of abutting workpieces 201 that cooperate with the placement plane 1031 to clamp, and an external frame 202 for mounting the abutting workpieces 201. For ease of understanding, a rectangular box-shaped workpiece (with both ends of the box in a conductive state) is used in the following description.

[0034] In use, the housing is placed on the fixing frame 103. At this time, the cylinder 101 is located inside the housing. The start switch 102 controls the cylinder 101 to push against the housing from the inside out. Since the housing is fitted onto the fixing frame 103, it can cooperate with the cylinder 101 to provide lateral pushing support and form internal support. The outer side is clamped by pushing the workpiece 201 towards the fixing frame 103, forming a vertical pushing limit and external support. In this way, with dual fixation in the lateral and vertical directions, the housing is ensured to remain stable during welding, avoiding deformation or displacement caused by uneven force, thereby improving welding quality and efficiency.

[0035] Furthermore, multiple abutment workpieces 201 are provided, which can form multiple clamping points on the surface of the box to increase the stability and uniformity of clamping, ensure that the box is subjected to uniform force during welding, and reduce the risk of deformation caused by local stress concentration. By flexibly adjusting the position and number of abutment workpieces 201, it can be adapted to boxes of different sizes and shapes, further improving the versatility and practicality of the tooling.

[0036] Furthermore, such as Figure 5 As shown, in this embodiment, multiple cylinders 101 are arranged side by side, with all cylinders 101 facing the same direction. This creates multiple points of support, enhancing the support for the housing and ensuring stability even in complex welding environments. Furthermore, the side-by-side design of the cylinders 101 facilitates synchronous control, simplifies the operation process, and improves work efficiency. It also allows for adaptation to housing designs of different lengths.

[0037] Alternatively, in this embodiment, multiple cylinders 101 are arranged side by side, with the multiple cylinders 101 arranged in opposite directions. When the multiple cylinders 101 are designed to have opposite directions, a more balanced support effect can be achieved through the opposing forces of the cylinders 101, avoiding tilting or shifting of the housing during the welding process and further optimizing the welding quality.

[0038] In this embodiment, the width of the fixed frame 103 is smaller than the width of the inner hole of the workpiece, and the outer frame 202 has a spacing larger than the width of the workpiece. This allows the box to be fitted between the fixed frame 103 and the outer frame 202, and the edges of the fixed frame 103 or the outer frame 202 can be used for auxiliary positioning to ensure accurate alignment of the box during the welding process.

[0039] like Figure 3 and Figure 4 As shown, in this embodiment, the abutting workpiece 201 includes a lifting bracket 2011, an abutting bolt 2012, and a spring 2013 sleeved on the abutting bolt 2012. The lifting bracket 2011 is provided with a mounting part 2014 parallel to the placement plane 1031. The abutting bolt 2012 is disposed through the mounting part 2014, and the spring 2013 is disposed between the through end of the abutting bolt 2012 and the mounting part 2014, and is kept in a state of providing elastic force to the through end of the abutting bolt 2012.

[0040] Specifically, the height of the mounting part 2014 is raised by the lifting bracket 2011, creating a horizontal distance between the mounting part 2014 and the fixing frame 103. Since the mounting part 2014 can be flat, after installing the abutment bolt 2012, it can be perpendicular to the fixing frame 103 for clamping and fixing the housing. Furthermore, a spring 2013 is installed on the abutment bolt 2012 to provide a stable abutment force, ensuring it maintains a stable abutment state even under external forces. This effectively prevents minor displacement of the housing during welding, further improving welding precision and stability. The spring 2013 also buffers the impact force during welding, extending the equipment's service life.

[0041] like Figure 2 As shown, in this embodiment, at least one transversely penetrating limiting pin 2015 is provided on the threaded body of the abutment bolt 2012, and an oblong hole 2016 is provided on the through hole of the mounting part 2014 for the limiting pin 2015 to pass through. Through the design of the limiting pin 2015, the abutment bolt 2012 can be locked in the position with the limiting pin 2015 to form a stable abutment effect, preventing the bolt from rotating or loosening under force and ensuring a constant abutment force.

[0042] In this embodiment, multiple limiting pins 2015 are provided, and an included angle is provided between adjacent limiting pins 2015. The included angle is between 0 and 180°, for example, it can be a 90-degree included angle, which can be adjusted according to actual needs to ensure that a stable support effect can be maintained under different lengths. The elasticity of the spring 2013 can be adjusted to form a corresponding clamping force.

[0043] like Figure 3 As shown, in this embodiment, a single-axis cylinder 1032 and a pressing member 1033 are provided on the other end of the fixing frame 103. A placement platform 104 is designed on one end of the fixing frame 103, forming a stepped structure with the fixing frame 103. The end face of the placement platform 104 can be pressed against the end face of the box to be welded. Then, the single-axis cylinder 1032 drives the pressing member 1033 to press against the other end of the box. In this way, the pressing member 1033 and the placement platform 104 clamp and fix the box, forming a complete fixation effect in three axes, improving the stability of the clamping.

[0044] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A welding fixture, comprising: include: An inner support unit includes at least one cylinder and a start switch for opening or closing the cylinder; the inner support unit also includes a fixing frame for mounting the cylinder and cooperating with the cylinder to abut and clamp it, and a placement platform disposed at one end of the fixing frame for mounting the start switch, the top surface of the fixing frame having a placement plane; and The external support unit includes several abutment workpieces that are clamped in cooperation with the placement plane, and an external frame for mounting the abutment workpieces.

2. The welding fixture of claim 1, wherein: Multiple cylinders are arranged side by side, and all cylinders are oriented in the same direction.

3. The welding fixture of claim 1, wherein: Multiple cylinders are arranged side by side, and the multiple cylinders are arranged in opposite directions.

4. The welding fixture of claim 1, wherein: The width of the fixing frame is smaller than the width of the inner hole of the workpiece, and the external frame is provided with a spacing greater than the width of the workpiece.

5. The welding fixture of claim 1, wherein: The abutting workpiece includes a lifting bracket, an abutting bolt, and a spring sleeved on the abutting bolt. The lifting bracket is provided with a mounting part parallel to the placement plane. The abutting bolt passes through the mounting part, and the spring is located between the through end of the abutting bolt and the mounting part, and maintains a state of providing elastic force to the through end of the abutting bolt.

6. The welding fixture of claim 5, wherein: The top bolt has at least one transversely penetrating limiting pin on its threaded body, and the mounting part has a slotted hole through which the limiting pin passes.

7. The welding fixture of claim 6, wherein: Multiple limiting pins are provided, and an included angle is provided between adjacent limiting pins, the angle of which is between 0 and 180°.

8. The welding fixture of claim 1, wherein: A single-axis cylinder and a top pressure member are provided on the drive shaft of the single-axis cylinder at the other end of the fixed frame.

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