Spot welding tool for cavity of electronic vacuum device

Abstract

The utility model discloses a spot welding tool for an electronic vacuum device cavity, which relates to the technical field of mechanical manufacturing and comprises a base and a mounting block fixedly mounted at the top of the base. According to the spot welding tool, when the spot welding tool is used, a cavity of the electronic vacuum device is arranged between the clamping blocks, the cavity applies pressure to enable the clamping blocks fixed to the outer wall of the first elastic piece to be stressed, the clamping blocks are fixed to the outer wall of the first elastic piece, and the first elastic piece is fixedly installed on one side of the installation block. The first elastic piece, the second elastic piece and the reset piece are driven to deform, the C-shaped elastic piece shrinks, the cross connecting plate assists in adjustment, and automatic adaptation of clamping force is achieved; and when the pressure is reduced, the elastic restoring force of each component pushes the clamping block to reset to keep stable clamping. According to the structure, manual adjustment is not needed, through cooperation of the elastic piece and the reset piece, the clamping requirements of different cavities are quickly responded, the situation that welding quality is affected by improper clamping force is avoided, the product percent of pass is increased, and the tool universality and practicability are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to a spot welding fixture for an electronic vacuum chamber. Background Technology

[0002] As a core component of electronic vacuum devices, the welding quality of the traditional electronic vacuum chamber directly affects the device's vacuum performance, electrical performance, and service life. In the production process of the electronic vacuum chamber, spot welding fixtures play a crucial role in fixing the chamber to the components to be welded (such as tuning chamber covers), ensuring precise and stable welding positions. However, existing spot welding fixtures have many problems in practical applications, resulting in poor clamping performance.

[0003] Currently, most spot welding fixtures for electronic vacuum chambers on the market use traditional mechanical clamping structures, such as manual bolt tightening or hydraulic clamps. Adjusting the clamping force often requires manual operation, which is not only cumbersome and inefficient but also difficult to quickly respond to the clamping requirements of different chamber sizes. For example, when welding electronic vacuum chambers of different wall thicknesses and shapes, operators need to repeatedly adjust bolt tightness or hydraulic pressure parameters, consuming a significant amount of time and severely impacting production progress. Utility Model Content

[0004] The purpose of this invention is to provide a spot welding fixture for an electronic vacuum chamber to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a spot welding fixture for an electronic vacuum chamber, including a base, a mounting block, and a first elastic element, which is fixedly installed on the top of the base; a first elastic element, which is fixedly installed on one side of the mounting block, a second elastic element is fixedly installed inside the first elastic element, and a reset element is symmetrically installed inside the second elastic element. The first elastic element and the second elastic element are C-shaped, and a connecting plate is rotatably provided at both ends of the second elastic element. The two connecting plates are arranged in a cross-rotation configuration, and one end of the two connecting plates is rotatably provided at both ends of the connecting plate; and a clamping block, which is fixedly installed on the outer wall of the first elastic element.

[0006] Furthermore, the first elastic element, the second elastic element, and the reset element are made of spring steel.

[0007] Furthermore, the cross-section of the clamping block is set to trapezoidal, and the inclined surface of the clamping block faces upward.

[0008] Furthermore, an installation groove is provided on the inclined surface, and multiple guide rollers are rotatably mounted on the installation groove.

[0009] Furthermore, the outer wall of the guide roller is integrally formed with a rubber layer.

[0010] Furthermore, a mounting bracket is fixedly installed on the top of the base, and a lead screw and a guide rod are provided on the fixed block extending from the inner top wall of the mounting bracket. A servo motor is provided at one end of the lead screw, and a slider is threadedly connected to the outer wall of the servo motor. A laser cutting device is fixedly installed at the bottom of the slider.

[0011] Furthermore, a receiving plate is fixedly installed on the fixing block, and the servo motor is located on the top of the receiving plate.

[0012] Furthermore, a guide telescopic rod is provided between the mounting block and the clamping block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, when using this spot welding fixture, the electronic vacuum chamber is placed between the clamping blocks. Pressure is applied to the chamber, causing the clamping blocks fixed to the outer wall of the first elastic element to be stressed. This causes the first elastic element, the second elastic element, and the reset element to deform, while the C-shaped elastic element contracts. The cross-connecting plate assists in adjustment, achieving automatic adaptation of the clamping force. When the pressure decreases, the elastic restoring force of each component pushes the clamping blocks to reset and maintain stable clamping. This structure requires no manual adjustment. Through the collaboration of the elastic element and the reset element, it quickly responds to the clamping needs of different chambers, avoiding improper clamping force from affecting welding quality, improving product qualification rate, and enhancing the versatility and practicality of the fixture.

[0015] 2. In this utility model, an installation groove is opened on the inclined surface and multiple guide rollers are rotatably set on the installation groove. When the electronic vacuum chamber is placed on the inclined surface of the clamping block, the rotation of the guide rollers reduces the frictional resistance between the chamber and the clamping block, making it easier for the chamber to slide quickly to the clamping position and reducing the difficulty of placement for the operator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the mounting block and the first elastic element in this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the mounting block and the guide rod in this utility model;

[0019] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0020] Figure 5 for Figure 2 Enlarged view of the structure at point B in the middle.

[0021] In the diagram: 1. Base; 2. Mounting block; 3. First elastic element; 4. Second elastic element; 5. Reset element; 6. Connecting plate; 7. Clamping block; 8. Mounting frame; 9. Guide roller; 10. Lead screw; 11. Slider; 12. Laser cutting device; 13. Servo motor; 14. Receiving plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution:

[0024] See Figures 1-5 As shown, a spot welding fixture for an electronic vacuum chamber includes a base 1, a mounting block 2 fixedly mounted on the top of the base 1; a first elastic element 3 fixedly mounted on one side of the mounting block 2, a second elastic element 4 fixedly mounted inside the first elastic element 3, and reset elements 5 symmetrically mounted inside the second elastic element 4. The first elastic element 3 and the second elastic element 4 are C-shaped, and connecting plates 6 are rotatably mounted at both ends of the second elastic element 4. The two connecting plates 6 are arranged in a cross-rotation configuration, with one end of each connecting plate 6 rotatably mounted at both ends of the connecting plate 6; and a clamping block 7 fixedly mounted on the outer wall of the first elastic element 3.

[0025] When using this spot welding fixture to clamp the electronic vacuum chamber, the chamber is placed between the clamping blocks 7. After the chamber contacts the clamping blocks 7, pressure is applied to the clamping blocks 7. Since the clamping blocks 7 are fixedly installed on the outer wall of the first elastic element 3, the first elastic element 3 undergoes elastic deformation under pressure, which simultaneously causes the internal second elastic element 4 and reset element 5 to deform under force. The C-shaped first elastic element 3 and second elastic element 4 can contract along their bending direction under force. The cross-connecting plates 6, which are rotatably set at both ends of the second elastic element 4, change their angle after being subjected to force, further assisting the elastic element in deformation adjustment, thereby automatically adjusting the clamping force according to the magnitude of the pressure applied to the chamber. When the pressure of the chamber on the clamping blocks 7 decreases, the elastic restoring force of the reset element 5 and the first and second elastic elements themselves comes into play, pushing the clamping blocks 7 to reset and maintaining a stable clamping state on the chamber.

[0026] Through the coordinated action of the first elastic element 3, the second elastic element 4, and the reset element 5, the clamping force of the electronic vacuum chamber is automatically adjusted, eliminating the need for manual operation of bolts or adjustment of hydraulic parameters. This significantly improves adjustment efficiency and solves the problems of cumbersome operation and difficulty in quickly responding to the clamping requirements of different chamber specifications in traditional tooling. Simultaneously, the adaptive adjustment structure composed of the elastic element and the reset element 5 can automatically adjust the clamping force according to the different shapes and wall thicknesses of the chambers, avoiding deformation of the chamber due to excessive clamping force or displacement of the chamber during welding due to insufficient clamping force. This effectively ensures welding quality, improves product qualification rate, and is applicable to spot welding operations of various specifications of electronic vacuum chambers, enhancing the versatility and practicality of the tooling.

[0027] See Figure 3 The first elastic element 3, the second elastic element 4, and the reset element 5 are made of spring steel.

[0028] The first elastic element 3, the second elastic element 4, and the reset element 5 are made of spring steel. The high strength, high elastic limit, and excellent fatigue resistance of spring steel can be utilized to ensure that the first elastic element 3 and the second elastic element 4 can stably undergo elastic deformation and accurately transmit clamping force when subjected to force. The reset element 5 can also use the elastic restoring force of spring steel to ensure that the clamping structure can quickly reset after pressure changes. At the same time, the good toughness and wear resistance of spring steel ensure that each component is not easily deformed or broken during long-term high-frequency clamping operations, thus extending the service life of the tooling and improving the reliability and stability of the automatic adjustment process of clamping force. This meets the requirements of the electronic vacuum chamber cavity spot welding tooling for the strength, elasticity, and durability of the clamping structure.

[0029] See Figure 2 The cross-section of clamping block 7 is set as trapezoidal, and the inclined surface of clamping block 7 faces upward.

[0030] The cross-section of clamping block 7 is trapezoidal with the inclined surface facing upwards. This allows the inclined surface of clamping block 7 to form a contact surface at a specific angle with the cavity surface when clamping the electronic vacuum chamber. This facilitates the accurate placement of the cavity into the clamping area between clamping blocks 7. At the same time, the trapezoidal structure, which is wider at the top and narrower at the bottom, can provide a certain limiting and guiding effect on the cavity during clamping, reducing the horizontal displacement of the cavity. Furthermore, the upward-facing inclined surface increases the opening space at the top of clamping block 7, making it easier for operators to quickly place the cavity and improving loading and unloading efficiency. In addition, the trapezoidal structure has a more reasonable mechanical distribution, which can enhance the structural strength of clamping block 7, making it less prone to deformation when subjected to clamping force, thus ensuring the stability and reliability of clamping.

[0031] A rubber layer is provided on one side of the clamping block 7.

[0032] See Figure 2 An installation groove is provided on the inclined surface, and multiple guide rollers 9 are rotatably installed on the installation groove.

[0033] An installation groove is opened on the inclined surface, and multiple guide rollers 9 are rotatably set on the installation groove. When the electronic vacuum chamber is placed on the inclined surface of the clamping block 7, the rotation of the guide rollers 9 reduces the frictional resistance between the chamber and the clamping block 7, making it easier for the chamber to slide quickly to the clamping position and reducing the difficulty of placement for the operator. At the same time, if the position of the chamber needs to be slightly adjusted during the clamping process, the rotational characteristics of the guide rollers 9 allow the chamber to move slightly on the inclined surface, improving the adaptability of the tooling to the position of the chamber. In addition, the setting of the guide rollers 9 can also avoid direct frictional contact between the surface of the chamber and the clamping block 7, preventing pinching or scratching of the surface of the chamber and ensuring the appearance quality and welding accuracy of the chamber.

[0034] See Figure 2 The outer wall of the guide roller 9 is integrally formed with a rubber layer.

[0035] The outer wall of the guide roller 9 is integrally formed with a rubber layer. The elastic properties of the rubber can increase the contact friction between the guide roller 9 and the surface of the electronic vacuum chamber, making the chamber more stable when sliding on the guide roller 9. This avoids the chamber sliding too fast or losing position due to insufficient friction. At the same time, the flexible contact of the rubber layer can further buffer the impact force of the clamping block 7 on the chamber during the clamping process, reducing the indentation or damage to the surface of the chamber caused by rigid contact. In addition, the wear resistance of the rubber layer can extend the service life of the guide roller 9 and reduce the tooling maintenance cost. Furthermore, the insulation of the rubber can also play a certain role in insulation protection during the welding process, preventing the current from being conducted through the guide roller 9 and affecting the chamber or tooling.

[0036] See Figure 1 A mounting bracket 8 is fixedly installed on the top of the base 1. A lead screw 10 and a guide rod are provided on the fixed block extending from the inner top wall of the mounting bracket 8. A servo motor 13 is provided at one end of the lead screw 10. A slider 11 is threadedly connected to the outer wall of the servo motor 13. A laser cutting device 12 is fixedly installed at the bottom of the slider 11.

[0037] A mounting bracket 8 is fixedly installed on the top of the base 1. A lead screw 10 and a guide rod are provided on the fixed block extending from the inner top wall of the mounting bracket 8. A servo motor 13 is provided at one end of the lead screw 10. A slider 11 is threadedly connected to the outer wall of the servo motor 13. A laser cutting device 12 is fixedly installed at the bottom of the slider 11. By driving the lead screw 10 to rotate through the servo motor 13, the linear movement of the slider 11 along the guide rod can be precisely controlled, thereby achieving precise horizontal displacement of the laser cutting device 12. This meets the high-precision positioning requirements for cutting different positions and shapes before spot welding of the electronic vacuum chamber. The guide rod enhances the stability of the slider 11 during movement, preventing shaking from affecting the cutting accuracy. Furthermore, the lead screw 10 transmission has the characteristics of high transmission efficiency, accurate positioning, and fast response speed, which can effectively improve the automation level and production efficiency of laser cutting, enabling the tooling to have cutting function, realizing integrated operation of the pre-welding process, and reducing the number of workpiece turnovers and manual intervention.

[0038] See Figure 1 A support plate 14 is fixedly installed on the fixed block, and a servo motor 13 is set on the top of the support plate 14.

[0039] A support plate 14 is fixedly installed on the fixed block, and the servo motor 13 is set on the top of the support plate 14. The support plate 14 can provide a stable mounting support platform for the servo motor 13, avoiding the shaking or displacement that may be caused by uneven force when the servo motor 13 is directly installed on the fixed block, thus ensuring the stability of the servo motor 13 during operation. At the same time, by raising the servo motor 13 and setting it on the support plate 14, the internal space layout of the mounting frame 8 can be optimized, which facilitates the installation and maintenance of components such as the lead screw 10 and guide rod. Moreover, the structural strength of the support plate 14 can withstand the weight of the servo motor 13 and the vibration generated during operation, reducing the impact of vibration on the transmission accuracy of the lead screw 10 and ensuring that the displacement control of the laser cutting device 12 is more accurate and reliable.

[0040] See Figure 3 A guide telescopic rod is provided between the mounting block 2 and the clamping block 7.

[0041] A guide telescopic rod is provided between the mounting block 2 and the clamping block 7. When the clamping block 7 is squeezed by the electronic vacuum chamber or moves due to the reset of the elastic element, the guide telescopic rod can provide a stable guiding effect for the clamping block 7, ensuring that the clamping block 7 moves in the predetermined direction and preventing it from deviating or shaking during the movement, thereby ensuring the accuracy of the clamping position. At the same time, the guide telescopic rod can enhance the connection stability between the clamping block 7 and the mounting block 2, share the lateral force generated when the elastic element is deformed under force, avoid damage to the elastic element due to uneven force, extend the service life of the elastic element, and help the elastic element to better realize the automatic adjustment of the clamping force, so that the clamping block 7 maintains a stable and reliable clamping state during the clamping of cavities of different specifications.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electron vacuum chamber spot welding tool, comprising a base (1), characterized in that: a mounting block (2) is fixedly installed on the top of the base (1); a first elastic member (3) is fixedly installed on one side of the mounting block (2), a second elastic member (4) is fixedly installed inside the first elastic member (3), a reset member (5) is symmetrically installed inside the second elastic member (4), the shapes of the first elastic member (3) and the second elastic member (4) are C-shaped, connecting plates (6) are rotationally arranged at both ends of the second elastic member (4), the two connecting plates (6) are cross-rotationally arranged, and one end of each connecting plate (6) is rotationally arranged at the other end of the connecting plate (6); a clamping block (7) is fixedly installed on the outer wall of the first elastic member (3).

2. An electronic vacuum chamber spot welding fixture as claimed in claim 1, wherein: The materials of the first elastic member (3), the second elastic member (4), and the reset member (5) are spring steel.

3. An electronic vacuum chamber spot welding fixture as claimed in claim 2, wherein: The cross section of the clamping block (7) is trapezoidal, and the inclined surface of the clamping block (7) faces upward.

4. An electronic vacuum chamber spot welding fixture as claimed in claim 3, wherein: An installation groove is formed on the inclined surface, and a plurality of guide rollers (9) are rotationally arranged on the installation groove.

5. An electronic vacuum chamber spot welding fixture as claimed in claim 4, wherein: A rubber layer is integrally formed on the outer wall of the guide roller (9).

6. An electronic vacuum chamber spot welding fixture as claimed in claim 5, wherein: A mounting frame (8) is fixedly installed on the top of the base (1), a lead screw (10) and a guide rod are arranged on the fixed block extended from the inner top wall of the mounting frame (8), a servo motor (13) is arranged at one end of the lead screw (10), a sliding block (11) is threadedly connected to the outer wall of the servo motor (13), a laser cutting device (12) is fixedly installed on the bottom of the sliding block (11).

7. An electronic vacuum chamber spot welding fixture as claimed in claim 6, characterized in that: A bearing plate (14) is fixedly installed on the fixed block, and the servo motor (13) is arranged on the top of the bearing plate (14).

8. An electronic vacuum chamber spot welding fixture as claimed in claim 7, characterized in that: A guide telescopic rod is arranged between the mounting block (2) and the clamping block (7).

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