A positioning tool

Abstract

This utility model provides a positioning fixture, relating to the field of capacitor technology, which solves the technical problem of inaccurate fixing and unstable welding quality during multi-core welding. The positioning fixture includes a base, several positioning clamps, and a scale. The base supports the parts to be welded. The positioning clamps are mounted on the base for multi-degree-of-freedom clamping and positioning of the parts. The scale is mounted on the base for quickly adjusting the position of the positioning clamps according to the specifications of the parts to be welded. This utility model achieves efficient and stable core welding through optimized integrated fixture design. The multi-degree-of-freedom clamping and positioning of the parts prevents displacement and shaking during welding, thus preventing poor welding quality. The scale provides a visual positioning reference based on the specifications of the parts to be welded, allowing for quick adjustment of the positioning clamp positions, thereby achieving rapid clamping and improving welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to a positioning tool for multi-core capacitors in welding. Background Technology

[0002] Film capacitors are important components widely used in electronic devices, primarily for filtering, coupling, energy storage, and pulse discharge. They typically consist of multiple cores that are electrically connected and mechanically fixed together by soldering. As electronic products evolve towards higher performance, miniaturization, and higher reliability, the manufacturing process of film capacitors faces increasingly stringent requirements.

[0003] The applicant has discovered the following technical problems with existing multi-core welding processes and equipment for film capacitors:

[0004] 1. Insufficient positioning accuracy: In existing processes, the positioning of multi-core components typically relies on manual adjustment or simple fixtures. This method makes it difficult to ensure the consistency of spacing between cores and solder joints, easily leading to soldering deviations, which in turn affect the electrical performance and service life of the product.

[0005] 2. Unstable welding quality: In traditional processes, the core may move or become misaligned during welding, leading to problems such as poor contact at the welding point, incomplete welding, or overheating, which directly affects the overall performance of the film capacitor. Utility Model Content

[0006] The purpose of this invention is to provide a positioning fixture for multi-core welding, so as to solve the technical problems of inaccurate fixing and unstable welding quality in the existing technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a positioning fixture, including a base, several positioning clamps, and a scale; wherein:

[0009] The base is used to support the parts to be welded;

[0010] Several of the aforementioned positioning fixtures are disposed on the base for multi-degree-of-freedom clamping and positioning of the parts to be welded;

[0011] The scale is mounted on the base and is used to quickly adjust the position of the positioning fixture according to the specifications of the part to be welded.

[0012] This utility model's positioning fixture mainly addresses the core problems existing in the traditional multi-core welding process of film capacitors. By optimizing the integrated fixture design, it achieves efficient and stable core welding. Several positioning jigs clamp and position the parts to be welded with multiple degrees of freedom, preventing the parts from shifting or shaking during the welding process, which would cause poor welding quality. By setting a scale, it provides an intuitive positioning reference according to the specifications of the parts to be welded, and the position of the positioning jigs can be quickly adjusted, thereby achieving rapid clamping and improving welding efficiency.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] As a further improvement of this utility model, the positioning fixture includes two side fixtures and a central fixture; wherein:

[0015] The central clamp is located on the top of the base and is used to fix the core in the part to be welded;

[0016] The clamps on both sides are movably mounted on both sides of the base and are used to clamp and fix the parts to be welded on both sides.

[0017] As a further improvement of this utility model, the central clamp includes a support frame, a limiting top plate, and a core limiting component; wherein:

[0018] The support frame is L-shaped and is suspended from the top of the base;

[0019] The limiting top plate is horizontally set on the vertical plate of the support frame and is used to push and limit one side of the end cap in the part to be welded.

[0020] The core limiting component is installed on the horizontal plate of the support frame and is used to limit the core in the part to be welded.

[0021] As a further improvement of this utility model, the core limiting component includes a limiting hole, a limiting plate, a locking pin, and a locking nut; wherein:

[0022] The limiting hole is formed on the horizontal plate of the support frame;

[0023] The limiting plate and the locking pin are an integral structure, with the limiting plate being engaged above the limiting hole and the locking pin being located below the limiting hole;

[0024] The locking nut is screwed onto the locking pin to lock the position of the limiting plate in the limiting hole.

[0025] As a further improvement of this utility model, the two-sided clamps include a left-side clamping unit, a right-side clamping unit, and a control assembly; wherein:

[0026] The control components are mounted on the base.

[0027] The left clamping unit and the right clamping unit are respectively connected to the control component and can move closer or further apart from each other under the action of the control component to clamp or release the parts to be welded.

[0028] As a further improvement of this utility model, the left clamping unit and the right clamping unit have the same structure and are mirror-symmetrical structures.

[0029] This invention enables the synchronous movement of the left and right clamping units through a control component. The operation process is intuitive and easy to understand, requiring no additional processing time. Furthermore, the left and right clamping units can move closer or further apart, making it suitable for products of different specifications and meeting the needs of diversified production.

[0030] As a further improvement of this utility model, the left clamping unit includes a connecting part, a roller, and a clamping groove; wherein:

[0031] The connecting part is connected to the control component and can move parallel under the drive of the control component;

[0032] The clamping groove is a C-shaped groove, which is located on the top of the connecting part and is used to engage with the part to be welded.

[0033] The roller is positioned below the clamping groove and is rotatably connected to the base.

[0034] As a further improvement of this utility model, the control component includes a gear, a rack, and a slide rail; wherein:

[0035] The base is provided with adjustment holes;

[0036] The gear is disposed at the bottom of the base;

[0037] The slide rail is fixed to the base;

[0038] The rack slides along the slide rail, and its teeth mesh with the gear.

[0039] The connecting part passes through the adjustment hole and connects to the rack.

[0040] As a further improvement of this utility model, there are two slide rails, which are respectively arranged on both sides of the base; there are two racks, which are respectively slidably connected to the two slide rails and are respectively located on both sides of the gear; the connecting part is U-shaped and is respectively connected to the two racks.

[0041] As a further improvement of this utility model, the central clamp is positioned directly opposite the center of the scale.

[0042] As a further improvement of this utility model, a flexible pad layer is provided in the clamping groove.

[0043] As a further improvement of this utility model, the flexible pad is made of silicone material.

[0044] By adding a silicone layer to the contact surface, damage to the core and end cap surfaces can be effectively avoided.

[0045] As a further improvement of this utility model, the positioning fixture is made of 6061 aluminum.

[0046] This utility model welding positioning fixture features high-precision positioning, a flexible material protection design, integrated and easy operation, and high adaptability to multiple core specifications. It solves key problems in multi-core welding of film capacitors, significantly reducing manufacturing costs and operational difficulty while improving production efficiency and product quality. The fixture base is equipped with a precise scale, providing operators with an intuitive positioning reference to ensure consistent spacing and position of the cores during welding, thus improving welding quality. A flexible material (such as a silicone layer) is added to the surfaces in contact with the cores and end caps to effectively prevent damage to the cores and end caps due to compression or impact. The fixture adopts a simple and efficient integrated design, requiring no additional complex assembly. Its compact structure and convenient operation reduce usage and maintenance costs. The fixture design is adaptable to various specifications of film capacitor cores, allowing welding of different models of products without changing parts or adding modules, demonstrating strong adaptability. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is an exploded view of the positioning tooling of this utility model;

[0049] Figure 2 This is a three-dimensional structural diagram of the positioning tooling of this utility model;

[0050] Figure 3 This is a top view of the positioning tooling of this utility model;

[0051] Figure 4 This is a bottom view of the positioning fixture of this utility model.

[0052] In the diagram: 1. End cap; 2. End cap lead-out terminal; 3. End cap explosion-proof block; 4. Center clamp; 5. Base; 6. Rack; 7. Roller; 8. Support frame; 9. Slide rail; 10. Gear; 11. Adjustment hole; 12. Limiting hole; 13. Flexible pad; 14. Clamping groove; 15. Connecting part; 16. Scale; 17. Locking nut; 18. Limiting top plate. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0054] like Figures 1-4 As shown, this utility model provides a positioning fixture, including a base 5, several positioning clamps, and a scale 16; wherein:

[0055] Base 5 is used to support the parts to be welded; the parts to be welded include the capacitor end cap and the core welded to the center of the capacitor end cap, and the core needs to be welded, such as... Figure 1 As shown, the core, not shown in the attached figure, is located at the center of the capacitor end cap;

[0056] Several positioning fixtures are mounted on the base 5 for multi-degree-of-freedom clamping and positioning of the parts to be welded. Considering that the parts to be welded in this embodiment are cylindrical capacitor end caps, at least one degree of freedom should be limited to prevent the capacitor end caps from shifting during the welding process. For example, X-axis limitation, such as... Figure 1 The left and right directions are shown as limits; of course, for further stability, Y-axis and Z-axis limits can also be implemented; the specific limit components are not specifically limited in this utility model.

[0057] A scale 16 is mounted on the base 5 and is used to quickly adjust the position of the positioning fixture according to the specifications of the part to be welded. When the part to be welded is placed on the base 5 for fixing, it should be placed at the zero mark position in the middle of the scale 16. Then, according to the known diameter of the part to be welded, the positioning fixture for X-axis positioning is controlled to quickly move to the corresponding radius of the part to be welded, thereby achieving rapid positioning and limiting.

[0058] This utility model's positioning fixture mainly addresses the core problems existing in the traditional multi-core welding process of film capacitors. By optimizing the integrated fixture design, it achieves efficient and stable core welding. Several positioning jigs clamp and position the parts to be welded with multiple degrees of freedom, preventing the parts from shifting or shaking during the welding process, which would cause poor welding quality. By setting a scale 16, it provides an intuitive positioning reference according to the specifications of the parts to be welded, and the position of the positioning jigs can be quickly adjusted, thereby achieving rapid clamping and improving welding efficiency.

[0059] As an optional embodiment of this utility model, the positioning fixture includes two side fixtures and a central fixture 4; wherein:

[0060] The center clamp 4 is set on top of the base 5 and is used to fix the core in the part to be welded;

[0061] The clamps on both sides are movably mounted on both sides of the base 5 to clamp and fix the parts to be welded. In this embodiment, the clamps on both sides are synchronously moving structures, which can move closer or further away at the same time, and their displacement is the same within the same time period.

[0062] As a further improvement of this utility model, the central clamp 4 includes a support frame 8, a limiting top plate 18, and a core limiting member; wherein:

[0063] The support frame 8 is L-shaped and is suspended on top of the base 5;

[0064] The limiting top plate 18 is horizontally set on the vertical plate of the support frame 8 and is used to push and limit one side of the part to be welded.

[0065] The core limiting component is set on the horizontal plate of the support frame 8 and is used to limit the core of the part to be welded.

[0066] like Figure 1 As shown, in order to reduce assembly steps and parts, the support frame 8, base 5 and limiting top plate 18 are integrally formed structures.

[0067] As an optional embodiment of this utility model, the core limiting component includes a limiting hole 12, a limiting plate, a locking pin, and a locking nut 17; wherein:

[0068] The limiting hole 12 is opened on the horizontal plate of the support frame 8;

[0069] The limiting plate and the locking pin are integrated into one structure, with the limiting plate positioned above the limiting hole 12 and the locking pin positioned below the limiting hole 12.

[0070] The locking nut 17 is screwed onto the locking pin to lock the position of the limiting plate in the limiting hole 12.

[0071] In use, the core is passed through the limiting hole 12, and then the limiting plate is moved to fix the core in the limiting hole 12. Then the locking nut 17 is tightened to achieve stable positioning.

[0072] As a further improvement of this utility model, the two-sided clamps include a left-side clamping unit, a right-side clamping unit, and a control assembly; wherein:

[0073] The control components are mounted on base 5;

[0074] The left and right clamping units are connected to the control component and can move closer or further apart under the control component to clamp or release the parts to be welded.

[0075] The left and right clamping units are located on both sides of the central clamp 4 to clamp and fix the parts to be welded on both sides.

[0076] To simplify the structure and reduce control difficulty, in this embodiment, the left clamping unit and the right clamping unit have the same structure, which is a mirror symmetric structure. The left clamping unit and the right clamping unit are connected to the same control component and can move synchronously under the control of the control component.

[0077] This invention enables the synchronous movement of the left and right clamping units through a control component. The operation process is intuitive and easy to understand, requiring no additional processing time. Furthermore, the left and right clamping units can move closer or further apart, making it suitable for products of different specifications and meeting the needs of diversified production.

[0078] Since the left and right clamping units have the same structure, the following explanation will focus on one side.

[0079] In this embodiment, as Figures 1-4 As shown, the left clamping unit includes a connecting part 15, a roller 7, and a clamping groove 14; wherein:

[0080] The connecting part 15 is connected to the control component and can move parallel under the drive of the control component;

[0081] The clamping groove 14 is a C-shaped groove, which is located on the top of the connecting part 15 and is used to engage with the part to be welded.

[0082] The roller 7 is located below the clamping groove 14 and is rotatably connected to the base 5.

[0083] The connecting part 15 is used to connect with the control component, the clamping groove 14 is used to hold the part to be welded, and the roller 7 is used to facilitate the smooth horizontal movement of the left and right clamping units, reduce movement resistance, and can also serve as a support structure to ensure smooth movement.

[0084] As a further improvement to this utility model, such as Figure 4 As shown, the control assembly includes a gear 10, a rack 6, and a slide rail 9; wherein:

[0085] An adjustment hole 11 is provided on the base 5;

[0086] Gear 10 is located at the bottom of base 5;

[0087] The slide rail 9 is fixed on the base 5;

[0088] The rack 6 slides along the slide rail 9, and its teeth mesh with the gear 10.

[0089] The connecting part 15 passes through the adjusting hole 11 and connects to the rack 6.

[0090] As a further improvement of this utility model, there are two slide rails 9, which are respectively arranged on both sides of the base 5; there are two racks 6, which are slidably connected to the two slide rails 9 and are respectively located on both sides of the gear 10; the connecting part 15 is U-shaped and is connected to the two racks 6 respectively.

[0091] As a further improvement of this utility model, the center clamp 4 and the scale 16 are arranged directly opposite each other. With this structural arrangement, after the part to be welded is fixed by the center clamp 4, the center of the part to be welded is exactly located in the middle position of the scale 16. Thus, the position of the left and right clamping units can be quickly adjusted according to the diameter of the part to be welded, so as to achieve rapid clamping.

[0092] To prevent damage to the surface of the parts to be welded during the clamping process, a flexible pad 13 is provided inside the clamping groove 14. The flexible pad 13 can be made of a flexible material, such as silicone. Of course, the flexible pad 13 can also be made of other materials, such as rubber, plastic, sponge, etc.

[0093] By adding a silicone layer to the contact surface, damage to the core and end cap 1 surface can be effectively avoided.

[0094] In this embodiment, in order to reduce the weight of the positioning fixture, the positioning fixture is made of 6061 aluminum.

[0095] This utility model welding positioning fixture features high-precision positioning, a flexible material protection design, integrated and easy operation, and high adaptability to multiple core specifications. It solves key problems in multi-core welding of film capacitors, significantly reducing manufacturing costs and operational difficulty while improving production efficiency and product quality. The fixture base 5 is equipped with a precise scale 16, providing operators with an intuitive positioning reference to ensure consistent spacing and position of the cores during welding, thus improving welding quality. A flexible material (such as a silicone layer) is added to the surfaces in contact with the cores and end caps 1 to effectively prevent damage to the cores and end caps 1 due to compression or collision. The fixture adopts a simple and efficient integrated design, requiring no additional complex assembly. Its compact structure and convenient operation reduce usage and maintenance costs. The fixture design is adaptable to various specifications of film capacitor cores, allowing welding of different models of products without replacing parts or adding modules, demonstrating strong adaptability.

[0096] The following is a method for using a multi-core positioning fixture in welding, and the operation steps are as follows:

[0097] The welding positioning fixture consists of a base 5 and three positioning clamps, all made of 6061 aluminum, characterized by its lightweight, high strength, and good corrosion resistance. The base 5 serves as the load-bearing foundation of the entire fixture, also made of 6061 aluminum with an anodized surface to enhance corrosion resistance. A scale 16 with clear, evenly spaced graduations provides a reference for precise core positioning. Two slide rails 9 are located on the front and rear sides of the base 5 for installing and adjusting the left and right clamping units. The design of the slide rails 9 ensures that the clamps can move flexibly and be fixed in position on the surface of the base 5, thus accommodating end caps 1 and cores of different sizes.

[0098] The tooling includes three positioning clamps mounted on the slide rails 9 on both sides of the base 5 and the support frame 8 at the center, for precise positioning of the end cap 1 and the core. The positioning clamps on the left and right sides are symmetrically mounted on the slide rails 9 of the base 5. The contact parts of the clamps are covered with flexible silicone material to prevent damage to the capacitor end cap and core surface during clamping. The left and right clamping units can move along the slide rails 9. By adjusting the positions of the left and right clamping units and the central clamp 4 on the slide rails 9, the capacitor end cap 1 is ensured to be centered on the base 5. The central clamp 4 is an integral structure directly connected to the base 5.

[0099] End cap 1 positioning: Place the capacitor end cap 1 centered on the base 5, with the aluminum cap portions on the left and right sides positioned according to their corresponding clamping units. For capacitor end cap leads 2 with various structures, an overlapping method is used, ensuring the aluminum cap portion of end cap 1 contacts the positioning clamps, allowing compatibility with multiple end cap structures without additional adjustment. Adjust the positioning clamps on the left and right sides to the slide rail 9, gently pressing against the sides of the aluminum caps to firmly fix end cap 1 onto the base 5. Core positioning: After end cap 1 is positioned, place the capacitor core into the limiting hole of the central positioning clamp. Use the central clamp 4 to position the core, ensuring it is centered and aligned with end cap 1 to prevent positional deviation during welding. Welding operation: After positioning, operate the welding equipment to weld the core to end cap 1. Precise control of the positioning clamps and the protective design of the flexible silicone ensure a stable and damage-free welding process.

[0100] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0101] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model 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 utility model.

[0102] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0103] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0104] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0106] The above description is merely a specific 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 protection scope of the claims.

Claims

1. A positioning tooling, characterized in that, Includes a base, several positioning clamps, and a scale; among which: The base is used to support the parts to be welded; Several of the aforementioned positioning fixtures are disposed on the base for clamping and positioning the parts to be welded; The scale is mounted on the base and is used to quickly adjust the position of the positioning fixture according to the specifications of the part to be welded.

2. The positioning fixture according to claim 1, characterized in that, The positioning fixture includes two side fixtures and a central fixture; wherein: The central clamp is located on the top of the base and is used to fix the parts to be welded; The clamps on both sides are movably mounted on both sides of the base and are used to clamp and fix the parts to be welded on both sides.

3. The positioning fixture according to claim 2, characterized in that, The central clamp includes a support frame, a limiting top plate, and a core limiting component; wherein: The support frame is L-shaped and is suspended from the top of the base; The limiting top plate is horizontally set on the vertical plate of the support frame and is used to push and limit one side of the part to be welded. The core limiting component is installed on the horizontal plate of the support frame and is used to limit the core in the part to be welded.

4. The positioning fixture according to claim 3, characterized in that, The core limiting component includes a limiting hole, a limiting plate, a locking pin, and a locking nut; wherein: The limiting hole is formed on the horizontal plate of the support frame; The limiting plate and the locking pin are an integral structure, with the limiting plate being engaged above the limiting hole and the locking pin being located below the limiting hole; The locking nut is screwed onto the locking pin to lock the position of the limiting plate in the limiting hole.

5. The positioning fixture according to claim 2, characterized in that, The two clamps include a left clamping unit, a right clamping unit, and a control assembly; wherein: The control components are mounted on the base. The left clamping unit and the right clamping unit are respectively connected to the control component and can move closer or further apart from each other under the action of the control component to clamp or release the parts to be welded.

6. The positioning fixture according to claim 5, characterized in that, The left clamping unit and the right clamping unit have the same structure and are mirror-symmetric.

7. The positioning fixture according to claim 6, characterized in that, The left-side clamping unit includes a connecting part, rollers, and clamping grooves; wherein: The connecting part is connected to the control component and can move parallel under the drive of the control component; The clamping groove is a C-shaped groove, which is located on the top of the connecting part and is used to engage with the part to be welded. The roller is positioned below the clamping groove and is rotatably connected to the base.

8. The positioning fixture according to claim 7, characterized in that, The control component includes gears, racks, and slide rails; wherein: The base is provided with adjustment holes; The gear is disposed at the bottom of the base; The slide rail is fixed to the base; The rack slides along the slide rail, and its teeth mesh with the gear. The connecting part passes through the adjustment hole and connects to the rack.

9. The positioning fixture according to claim 8, characterized in that, The number of slide rails is two, respectively arranged on both sides of the base; the number of racks is two, respectively slidably connected to the two slide rails, and respectively located on both sides of the gear; the connecting part is U-shaped and is connected to the two racks respectively.

10. The positioning fixture according to claim 2, characterized in that, The central clamp is positioned directly opposite the center of the scale.

11. The positioning fixture according to claim 6, characterized in that, A flexible pad is provided inside the clamping groove.

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