A spring strip welding clamping mechanism

Abstract

This utility model discloses a spring strip welding clamping mechanism, belonging to the field of tooling fixture technology. It includes a slide table and a clamping assembly. The slide table includes a zero-point base and a zero-point chuck, with the zero-point chuck positioned at the upper end of the zero-point base. The clamping assembly includes a fixed clamp seat and a movable clamp seat, which are slidably fitted together. A zero-point pull stud is located at the bottom of the fixed clamp seat, used for engaging with the zero-point chuck. A mounting cavity is provided between the fixed and movable clamp seats, containing a self-locking mechanism and an unlocking mechanism. The self-locking mechanism keeps the fixed and movable clamp seats in a clamped state, while the unlocking mechanism keeps them in an open state. Its structure is simple and easy to use. The clamping assembly is engaged with the slide table, facilitating separation and assembly. Even after separation, the clamping assembly can still clamp the workpiece, making it easy to transfer the clamping assembly and workpiece together. This clamping mechanism offers high flexibility.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a spring strip welding clamping mechanism. Background Technology

[0002] The grid is a crucial component of nuclear fuel assemblies, serving to clamp and position fuel rods and maintain their center-to-center distance. Grids are typically assembled from multiple spring strips. Each spring strip consists of multiple independent spring clips welded onto a strip. In automated production, fixtures play a vital role in production efficiency, ease of operation, and positioning accuracy. Existing automated production lines often employ linear or closed-loop assembly lines, making it inconvenient to independently control the movement of any single fixture, and fixtures cannot be moved independently. This limits automated production, impacting both efficiency and quality. Utility Model Content

[0003] The purpose of this utility model is to provide a spring strip welding clamping mechanism, which has a simple structure, is easy to use, and can effectively improve the above-mentioned problems.

[0004] The embodiments of this utility model are implemented as follows:

[0005] This utility model provides a spring strip welding clamping mechanism, including a slide table and a clamping assembly. The slide table includes a zero-point base and a zero-point chuck, with the zero-point chuck disposed at the upper end of the zero-point base. The clamping assembly includes a fixed clamp seat and a movable clamp seat, with the movable clamp seat slidably engaged with the fixed clamp seat. The bottom of the fixed clamp seat is provided with a zero-point pull stud, which is used to engage with the zero-point chuck. An installation cavity is provided between the fixed clamp seat and the movable clamp seat, and a self-locking mechanism and an unlocking mechanism are provided within the installation cavity. The self-locking mechanism is used to keep the fixed clamp seat and the movable clamp seat in a clamped state, and the unlocking mechanism is used to keep the fixed clamp seat and the movable clamp seat in an open state.

[0006] Furthermore, the self-locking mechanism includes a mounting block and a self-locking spring. The mounting block is connected to the fixed clamp seat, and one end of the self-locking spring is connected to the mounting block and the other end is connected to the movable clamp seat.

[0007] Furthermore, the unlocking mechanism includes an unlocking cylinder and an air inlet seat. The air inlet seat is located at the upper end of the zero-point base, and the unlocking cylinder is located inside the mounting cavity. The fixing fixture seat is provided with a gas channel, which connects the air inlet seat and the unlocking cylinder.

[0008] Furthermore, the upper end of the zero-point base is provided with a first conductive contact, and the lower end of the fixing fixture base is provided with a second conductive contact at a position corresponding to the first conductive contact. The first conductive contact abuts against the second conductive contact, and the unlocking cylinder is provided with a sensor. The second conductive contact is connected to the sensor via a wire.

[0009] Furthermore, the fixed fixture seat is provided with a first guide block, and the movable fixture seat is provided with a second guide block, with the first guide block and the second guide block slidingly engaged.

[0010] Furthermore, the fixed clamp seat includes a first base portion and a first clamping portion, the first clamping portion being disposed on one side of the first base portion, and the movable clamp seat includes a second base portion and a second clamping portion, the second clamping portion being disposed on one side of the second base portion, the first clamping portion and the second clamping portion forming a clamping area.

[0011] Furthermore, the first clamping part is provided with a first notch, and the second clamping part is provided with a second notch, with the first notch corresponding to the second notch.

[0012] Furthermore, the top of the movable clamp seat is provided with a pull pin hole.

[0013] Furthermore, there are multiple zero-point chucks, which are symmetrically arranged on the upper end of the zero-point base. There are also multiple zero-point rivets, each corresponding to one of the zero-point chucks.

[0014] The beneficial effects of this utility model are as follows:

[0015] The spring strip welding clamping mechanism provided by this utility model has a simple structure and is easy to use. The clamping component is snapped together with the slide table, which is convenient for separation and assembly. Moreover, after separation, the clamping component can still clamp the workpiece, which is convenient for the clamping component and the workpiece to be transferred together. This clamping mechanism has high flexibility and can better ensure the production efficiency and quality of the automated production line. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the spring strip welding clamping mechanism provided in an embodiment of the present utility model;

[0018] Figure 2 A structural schematic diagram of the clamping component from one perspective;

[0019] Figure 3 This is a structural schematic diagram of the clamping component from another perspective.

[0020] In the figure: 1-slide table; 11-zero point base; 12-zero point chuck; 13-first conductive contact; 14-second conductive contact; 2-clamping assembly; 21-fixed clamp seat; 211-first base part; 212-first clamping part; 213-first guide block; 214-first notch; 215-zero point pull pin; 22-movable clamp seat; 221-second base part; 222-second clamping part; 223-second guide block; 224-second notch; 225-pull pin hole; 31-mounting block; 32-self-locking spring; 33-unlocking cylinder; 34-air inlet seat. Detailed Implementation

[0021] 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 for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify 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. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0025] refer to Figure 1-3 As shown, this utility model embodiment provides a spring strip welding clamping mechanism, including a slide table 1 and a clamping assembly 2.

[0026] The slide table 1 includes a zero-point base 11 and zero-point chucks 12. Two zero-point chucks 12 are symmetrically arranged on the upper end of the zero-point base 11. Each zero-point chuck 12 has a pull pin hole 225 in the middle. Of course, the number of zero-point chucks 12 can also be four, six, or more, usually added in pairs. The zero-point chucks 12 can adopt existing technology or be designed according to requirements.

[0027] The clamping assembly 2 includes a fixed clamp seat 21 and a movable clamp seat 22.

[0028] The fixed clamp base 21 includes a first base portion 211 and a first clamping portion 212. The first clamping portion 212 is disposed on one side of the first base portion 211. The movable clamp base 22 includes a second base portion 221 and a second clamping portion 222. The second clamping portion 222 is disposed on one side of the second base portion 221. The second base portion 221 is slidably engaged with the first base portion 211. The first clamping portion 212 and the second clamping portion 222 form a clamping area. In this embodiment, the fixed clamp seat 21 is provided with two first guide blocks 213, which are distributed at the upper end of the fixed clamp seat 21 near both ends. The movable clamp seat 22 is provided with two second guide blocks 223, which are fixed at the lower end of the movable clamp seat 22 near both ends. The first guide blocks 213 and the second guide blocks 223 are snapped together and slidably engaged at the snap-fit ​​point. This not only connects the fixed clamp seat 21 and the movable clamp seat 22 together, making them difficult to separate, but also ensures that the movable clamp seat 22 can slide relative to the fixed clamp seat 21 without shifting. Alternatively, a groove can be provided on the first base portion 211, and a sliding portion can be provided on the second base portion 221, with the sliding portion slidably engaging with the groove.

[0029] The first clamping part 212 has a first notch 214, and the second clamping part 222 has a second notch 224, with the first notch 214 and the second notch 224 corresponding to each other. There are multiple first notches 214 distributed along the length of the first clamping part 212, and multiple second notches 224 distributed along the length of the second clamping part 222, with each first notch 214 and second notch 224 corresponding to the other. The first notch 214 and the second notch 224 are provided to facilitate the clamping and welding of the spring.

[0030] The bottom of the fixed clamp base 21 is provided with a zero-point rivet 215, which is used to snap and connect with the zero-point chuck 12. The number of zero-point rivets 215 is the same as the number of zero-point chucks 12 and they correspond one-to-one. The zero-point rivets 215 and the zero-point chucks 12 can be standard parts, which are stable to fit together and easy to snap together or separate.

[0031] The upper side of the first base portion 211 and / or the lower side of the second base portion 221 are provided with grooves to form a mounting cavity, and a self-locking mechanism and an unlocking mechanism are provided in the mounting cavity.

[0032] The self-locking mechanism includes a mounting block 31 and a self-locking spring 32. The mounting block 31 is connected to the fixed clamp seat 21. One end of the self-locking spring 32 is connected to the mounting block 31, and the other end is connected to the movable clamp seat 22. The axial direction of the self-locking spring 32 is consistent with the sliding direction of the movable clamp seat 22 relative to the fixed clamp seat 21. After the self-locking spring 32 is installed, it is in a compressed state. Under the elastic force of the self-locking spring 32, the first clamping part 212 and the second clamping part 222 can be clamped.

[0033] The unlocking mechanism includes an unlocking cylinder 33 and an air inlet seat 34. The air inlet seat 34 is located at the upper end of the zero-point base 11. The unlocking cylinder 33 is located inside the mounting cavity, and its cylinder body is fixed to the fixed clamp seat 21. The piston rod of the unlocking cylinder 33 is connected to the movable clamp seat 22. The fixed clamp seat 21 has a gas passage that connects the air inlet seat 34 and the unlocking cylinder 33. The air inlet seat 34 is connected to an air generator via an air pipe. Thus, when the zero-point rivet 215 and the zero-point chuck 12 are engaged, the air intake seat 34 and the unlocking cylinder 33 are connected through the gas channel. Controlling the piston rod of the unlocking cylinder 33 to retract will cause the movable clamp seat 22 to slide, so that the first clamping part 212 and the second clamping part 222 are in the open state. At this time, the workpiece can be placed into the clamping area or removed from the clamping area. Controlling the piston rod of the unlocking cylinder 33 to extend will cause the first clamping part 212 and the second clamping part 222 to be in the clamping state. The first clamping part 212 and the second clamping part 222 can clamp the workpiece. At this time, if the zero-point rivet 215 and the zero-point chuck 12 are separated, that is, the clamping assembly 2 is separated from the slide table 1, the first clamping part 212 and the second clamping part 222 can still maintain the workpiece in the clamping state under the action of the self-locking mechanism.

[0034] The top of the movable clamp base 22 is also provided with a rivet hole 225. The number of rivet holes 225 is one, two or more. In this embodiment, the number of rivet holes 225 is two. The rivet holes 225 are provided to facilitate other mechanisms to grasp them, thereby separating the clamping component 2 from the slide table 1 and transferring the clamping component 2.

[0035] The upper end of the zero-point base 11 is also provided with a first conductive contact 13, and a conductive wire is connected to the first conductive contact 13 for connection to a power source. The lower end of the fixing clamp base 21 is provided with a second conductive contact 14 at a position corresponding to the first conductive contact 13. The first conductive contact 13 and the second conductive contact 14 abut against each other. The unlocking cylinder 33 is provided with a sensor, and the second conductive contact 14 is connected to the sensor via a wire. The sensor is used to detect the position status of the unlocking cylinder 33.

[0036] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A spring band welding clamp mechanism characterized by: The device includes a slide table and a clamping assembly. The slide table includes a zero-point base and a zero-point chuck, with the zero-point chuck disposed at the upper end of the zero-point base. The clamping assembly includes a fixed clamp seat and a movable clamp seat, with the movable clamp seat slidably engaged with the fixed clamp seat. The bottom of the fixed clamp seat is provided with a zero-point pull pin, which is used to engage with the zero-point chuck. A mounting cavity is provided between the fixed clamp seat and the movable clamp seat, and a self-locking mechanism and an unlocking mechanism are provided within the mounting cavity. The self-locking mechanism is used to keep the fixed clamp seat and the movable clamp seat in a clamped state, and the unlocking mechanism is used to keep the fixed clamp seat and the movable clamp seat in an open state.

2. The spring band welding clamp mechanism of claim 1, wherein: The self-locking mechanism includes a mounting block and a self-locking spring. The mounting block is connected to the fixed clamp seat, and one end of the self-locking spring is connected to the mounting block and the other end is connected to the movable clamp seat.

3. The spring band welding clamp mechanism of claim 2, wherein: The unlocking mechanism includes an unlocking cylinder and an air inlet seat. The air inlet seat is located at the upper end of the zero-point base, and the unlocking cylinder is located inside the mounting cavity. The fixing fixture seat is provided with a gas channel, which connects the air inlet seat and the unlocking cylinder.

4. The spring band welding clamp mechanism of claim 3, wherein: The upper end of the zero-point base is also provided with a first conductive contact, and the lower end of the fixing clamp seat is provided with a second conductive contact at a position corresponding to the first conductive contact. The first conductive contact and the second conductive contact abut against each other. The unlocking cylinder is provided with a sensor, and the second conductive contact is connected to the sensor through a wire.

5. The spring band welding clamp mechanism of claim 1, wherein: The fixed fixture seat is provided with a first guide block, and the movable fixture seat is provided with a second guide block, with the first guide block and the second guide block slidingly engaged.

6. The spring band welding clamp mechanism of claim 1, wherein: The fixed clamp seat includes a first base portion and a first clamping portion, the first clamping portion being disposed on one side of the first base portion. The movable clamp seat includes a second base portion and a second clamping portion, the second clamping portion being disposed on one side of the second base portion. The first clamping portion and the second clamping portion form a clamping area.

7. The spring band welding clamp mechanism of claim 6, wherein: The first clamping part has a first notch, and the second clamping part has a second notch, with the first notch corresponding to the second notch.

8. The spring band welding clamp mechanism of claim 1, wherein: The top of the movable clamp seat is provided with a pull pin hole.

9. The spring band welding clamp mechanism of claim 1, wherein: The number of zero-point chucks is multiple, and the multiple zero-point chucks are disposed on the upper end of the zero-point base. The number of zero-point rivets is also multiple and corresponds one-to-one with the zero-point chucks.

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