A clamping fixture for processing spiral stirrups

Abstract

This utility model relates to the field of building construction technology, specifically a clamping fixture for processing spiral stirrups. It includes a working platform with guide columns fixedly connected to all four sides of its upper surface. A tightening spring is fitted onto the outer surface of each guide column. The advantages are: the guide columns and tightening springs provide stable support and pre-tightening force for the limiting block; the clamping height can be flexibly adjusted with the adjusting nut to accommodate stirrups of different specifications. The positioning column acts as the fulcrum for the rotation of the contact plate, and with the elasticity of the return spring, the contact plate can adaptively rotate and fit the stirrup shape, achieving all-around clamping. The groove provides precise installation space for each component, ensuring structural adaptability and smooth movement. The overall structure can automatically adapt to changes in stirrup size, providing stable clamping without damaging the workpiece, reducing manual adjustment steps, improving processing efficiency and product consistency, and combining practicality and reliability.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a clamping fixture for processing spiral stirrups. Background Technology

[0002] Spiral stirrups, also known as spiral hoops, are used in reinforced concrete structures to form a chain of individual stirrups (single stirrups) within strip-shaped components such as beams, columns, and piles. With the booming development of the construction industry and the continuous expansion of new buildings, the demand for spiral stirrups has been constantly increasing. Previously, spiral stirrups were made manually, which was labor-intensive and inefficient. When manual tying and fabrication of spiral stirrups could not provide the timely supply of finished stirrups, spiral stirrup forming machines emerged in the market.

[0003] Chinese utility model patent CN111659836A discloses a spiral stirrup forming machine, including a base, a support frame and a movable support frame on the base, a main shaft horizontally mounted on the support frame and the movable support frame, and a rotating cage with an adjustable diameter mounted on the main shaft. The power input component of the adjustable rotating cage is connected to a power mechanism. This utility model solves the problems of current spiral stirrup forming machines, which cannot produce spiral stirrups of different sizes with a single machine, are inefficient, and often require multiple people to operate manually, which is both labor-intensive and time-consuming, and cannot meet the needs of mass production. However, it lacks an adaptive clamping structure, cannot automatically fit the stirrup shape to achieve all-round clamping, has poor clamping effect and is prone to damaging the workpiece, has insufficient component installation adaptability, poor movement smoothness, requires frequent manual adjustments, has low processing efficiency, and is difficult to guarantee product consistency. It lacks practicality and reliability, cannot meet the stable clamping requirements of different sizes of stirrups in mass production, and is difficult to adapt to the high-efficiency production scenarios of spiral stirrup forming machines. Therefore, this utility model proposes a clamping fixture for processing spiral stirrups to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping fixture for processing spiral stirrups, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping fixture for processing spiral stirrups, comprising: a working platform, guide columns fixedly connected to all four sides of the upper surface of the working platform, a tightening spring sleeved on the outer surface of the guide columns, the upper surface of the tightening spring abutting against a limit block, and an adjusting nut correspondingly provided on the upper surface of the limit block, a mating groove provided on the side wall of the limit block, a positioning column fixedly connected to the inner surface of the mating groove, a contact plate rotatably connected to the outer surface of the positioning column, and a connecting block provided between the contact plate and the limit block, and a return spring fixedly connected between two adjacent connecting blocks.

[0006] Preferably, the outer surfaces of the limiting block and the guide post are slidably connected, and the outer surfaces of the adjusting nut and the guide post are threadedly connected.

[0007] Preferably, the number of clamping springs and the number of guide posts are set in a corresponding manner, and the reset springs are symmetrically arranged on the outer surface of the contact plate.

[0008] Preferably, the contact plate is located inside the mating groove, and the size of the contact plate is adapted to the size of the mating groove.

[0009] Preferably, the lower surfaces of the mating groove and the limiting block are connected, and the guide posts are distributed at the four corners of the upper surface of the work platform.

[0010] Preferably, a fixed column is fixedly connected to the upper surface of the work platform, and the fixed column is located between multiple guide columns.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention utilizes a guide post and a clamping spring to provide stable support and preload for the limiting block. The clamping height can be flexibly adjusted with an adjusting nut to accommodate different specifications of stirrups. The positioning post acts as the fulcrum for the rotation of the contact plate, and with the elasticity of the return spring, the contact plate can adaptively rotate and fit the stirrup's shape, achieving omnidirectional clamping. The groove provides precise installation space for each component, ensuring structural adaptability and smooth movement. The overall structure automatically adapts to changes in stirrup size, providing secure clamping without damaging the workpiece, reducing manual adjustment steps, improving processing efficiency and product consistency, and combining practicality and reliability. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the limiting block structure of this utility model;

[0015] Figure 3 This is a three-dimensional cross-sectional view of the overall structure of this utility model;

[0016] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Working platform; 2. Guide column; 3. Tightening spring; 4. Fixed column; 5. Limit block; 6. Mating groove; 7. Positioning column; 8. Connecting block; 9. Return spring; 10. Contact plate; 11. Adjusting nut. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] The present application will be further described in detail below with reference to all the accompanying drawings.

[0020] Example 1:

[0021] Reference Figures 1 to 4 A clamping fixture for processing spiral stirrups includes: a working platform 1, with guide columns 2 fixedly connected to all four sides of the upper surface of the working platform 1, providing a vertical sliding mounting base for the limiting block 5 and limiting its movement trajectory; a tension spring 3 is sleeved on the outer surface of the guide column 2, providing an upward preload force to the limiting block 5 through elastic support; the upper surface of the tension spring 3 abuts against the limiting block 5, and the upper surface of the limiting block 5 is correspondingly provided with an adjusting nut 11, supporting components such as a bearing contact plate 10 and adjusting the position in conjunction with the adjusting nut 11; and the side wall of the limiting block 5 is provided with... The device has a mating groove 6, which provides installation space for the positioning post 7 and the contact plate 10 and ensures the compatibility of the components. The positioning post 7 is fixedly connected to the inner surface of the mating groove 6, providing a rotation fulcrum for the contact plate 10 and ensuring its stable installation. The contact plate 10 is rotatably connected to the outer surface of the positioning post 7, and a connecting block 8 is provided between the contact plate 10 and the limiting block 5. The clamping effect is achieved by rotating and fitting the surface of the spiral stirrup. A return spring 9 is fixedly connected between two adjacent connecting blocks 8, which drives the contact plate 10 to return to its initial position for repeated use through elastic reset.

[0022] Reference Figure 2 and Figure 4The outer surfaces of the limiting block 5 and the guide post 2 are slidably connected, allowing the limiting block 5 to move up and down along the guide post 2 to adjust its height. The adjusting nut 11 is threadedly connected to the outer surface of the guide post 2, and the upper and lower positions of the limiting block 5 are adjusted and fixed by rotating the thread. The number of clamping springs 3 corresponds to the number of guide posts 2, ensuring that each guide post 2 can provide a uniform clamping force. The return springs 9 are symmetrically arranged on the outer surface of the contact plate 10, so that the force on both sides of the contact plate 10 is balanced to ensure clamping stability. The contact plate 10 is located inside the mating groove 6, and the size of the contact plate 10 is adapted to the size of the mating groove 6 to prevent the contact plate 10 from shifting and to ensure the fit with the mating groove 6. The lower surface of the mating groove 6 and the limiting block 5 are connected, which facilitates the insertion of the spiral stirrup and the effective contact with the contact plate 10. The guide posts 2 are distributed at the four corners of the upper surface of the working platform 1, so that the limiting block 5 is subjected to balanced force and to ensure the overall stability of the tooling structure.

[0023] Reference Figure 1 and Figure 3 The upper surface of the work platform 1 is fixedly connected with a fixed column 4, and the fixed column 4 is located between multiple guide columns 2, which plays a supporting and positioning role for the bottom of the spiral stirrup and forms an all-round clamping with the surrounding contact plates 10.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spiral stirrup machining clamping tool, comprising: The working platform (1) is characterized in that: guide columns (2) are fixedly connected to the upper surface of the working platform (1) around the perimeter, a tightening spring (3) is sleeved on the outer surface of the guide column (2), the upper surface of the tightening spring (3) abuts against a limit block (5), and an adjusting nut (11) is provided on the upper surface of the limit block (5), a mating groove (6) is provided on the side wall of the limit block (5), a positioning column (7) is fixedly connected to the inner surface of the mating groove (6), a contact plate (10) is rotatably connected to the outer surface of the positioning column (7), and a connecting block (8) is provided between the contact plate (10) and the limit block (5), and a reset spring (9) is fixedly connected between two adjacent connecting blocks (8).

2. The spiral stirrup processing and clamping tool according to claim 1, characterized in that: The outer surfaces of the limiting block (5) and the guide post (2) are slidably connected, and the outer surfaces of the adjusting nut (11) and the guide post (2) are threadedly connected.

3. The spiral stirrup processing and clamping tool according to claim 1, characterized in that: The number of the clamping springs (3) and the number of the guide posts (2) are set in a corresponding manner, and the reset springs (9) are symmetrically arranged on the outer surface of the contact plate (10).

4. The spiral stirrup processing and clamping tool according to claim 1, characterized in that: The contact plate (10) is located inside the mating groove (6), and the size of the contact plate (10) is adapted to the size of the mating groove (6).

5. The spiral stirrup processing and clamping tool according to claim 1, characterized in that: The lower surfaces of the mating groove (6) and the limiting block (5) are connected, and the guide posts (2) are distributed at the four corners of the upper surface of the working platform (1).

6. The spiral stirrup processing and clamping tool according to claim 1, characterized in that: The upper surface of the working platform (1) is fixedly connected to a fixed column (4), and the fixed column (4) is located between multiple guide columns (2).

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