CN108221193B

CN108221193B - Rotary multi-point tensioning and positioning device

Info

Publication number: CN108221193B
Application number: CN201810239693.8A
Authority: CN
Inventors: 庞佑霞; 唐勇; 朱宗铭; 彭正乔; 王佳丽
Original assignee: Changsha University
Current assignee: Changsha University
Priority date: 2018-03-22
Filing date: 2018-03-22
Publication date: 2024-04-19
Anticipated expiration: 2038-03-22
Also published as: CN108221193A

Abstract

A rotary multipoint tensioning positioning device consists of a bottom plate, a grooved pulley driving rod, a spring needle set, a movable needle seat, a supporting seat, a corner wheel, a needle shaft and a grooved pulley, wherein when the grooved pulley driving rod moves, the grooved pulley is driven to enable the movable needle seat to move, and the needle point of the spring needle set on the movable needle seat penetrates through fabric; the grooved pulley driving rod continuously moves to drive the corner wheel to enable the needle shaft to rotate, the relative position of the needle point of the spring needle group is increased, and tensioning and positioning of the fabric are completed. The device has compact structure, low maintenance cost, convenient and accurate control and easy implementation, and is suitable for automatic sewing of the glove.

Description

Rotary multi-point tensioning and positioning device

Technical Field

The invention relates to a rotary multi-point tensioning and positioning device, in particular to a device for tensioning and positioning during sewing of a sewn protective glove.

Background

In the sewing industry, in order to facilitate the cutting, sewing, embroidery and other processing of the flexible fabric, the fabric needs to be tensioned and positioned to prevent the flexible fabric from twisting and wrinkling. In order to tension the flexible fabric, roller tensioning, clamping tensioning adjustment and the like are adopted in the prior art, the tensioning methods are suitable for tensioning the fabric in a large area, the tensioning of the artificial frame is not beneficial to mass production, and the prior tensioning technology cannot be suitable for robot sewing of clothing, gloves and the like. In order to facilitate the robot to sew the clothing of the flexible fabric, the flexible fabric is hardened by chemical agents to realize the robot sewing, but the hardened and sewn fabric needs to be cleaned. At present, the glove is basically produced manually, the efficiency is low, and the labor intensity of workers is high. In order to realize that the manipulator replaces manual sewing, a tensioning and positioning device suitable for robot sewing needs to be researched and designed.

Disclosure of Invention

Aiming at the defects of the existing fabric tensioning modes at home and abroad, the invention provides a rotary multi-point tensioning and positioning device, which adopts spring needles arranged at multiple points to penetrate through the sewn glove fabric, then the spring needles rotate, and the fabric is tensioned through needle points, so that the manipulator can clamp and sew the fabric conveniently; the fabric tensioning with complex shape can be completed by changing the positions of the tensioning points and increasing the number of the tensioning points.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

The invention relates to a rotary multipoint tensioning and positioning device, which comprises: a base plate ⑴, a sheave drive rod ⑵, a spring needle group ⑶, a moving needle seat ⑷, a supporting seat ⑸, a corner wheel ⑹, a needle shaft ⑺ and a sheave shaft ⑻; the spring needle group ⑶ is formed by sequentially fixing a corner wheel ⑹ and a spring needle on a needle shaft ⑺, the spring needle group ⑶ is installed on a movable needle seat ⑷, the movable needle seat ⑷ is installed on a guide post of a bottom plate ⑴, a supporting seat ⑸ is fixed on a bottom plate ⑴, a grooved wheel shaft ⑻ is installed on the supporting seat ⑸, an eccentric wheel installed on the shaft of the grooved wheel shaft ⑻ and the movable needle seat ⑷ form cam connection, a grooved wheel driving rod ⑵ is installed on the bottom plate ⑴, and the movement of the grooved wheel driving rod causes the grooved wheel shaft ⑻ and the corner wheel ⑹ to rotate; the spring needle sets ⑶ are used in pairs, at least 2 pairs.

Preferably: the single spring needle set ⑶ rotates less than 10 deg., and the moving needle holder ⑷ moves less than 15mm.

Therefore, the rotary multi-point tensioning and positioning device disclosed by the invention can be used for tensioning or releasing the fabric by utilizing the relative rotation of the pair of needle points, changing the position of the tensioning point and increasing the number of the tensioning point, tensioning the fabric with a complex shape, and reducing the damage of the needle points to the fabric when the spring needle uses the toothed needle points.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic three-dimensional structure of an embodiment;

In the figure:

1-a bottom plate 2-a grooved pulley driving rod 3-a spring needle group 4-a movable needle seat 5-a supporting seat 6-a corner wheel 7-a needle shaft 8-a grooved pulley shaft 9-a fabric.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the drawings.

A rotary multi-point tensioning and positioning device as shown in fig. 1, comprising: a base plate ⑴, a sheave drive rod ⑵, a spring needle group ⑶, a moving needle seat ⑷, a supporting seat ⑸, a corner wheel ⑹, a needle shaft ⑺ and a sheave shaft ⑻; spring needle set ⑶ is formed by sequentially fixing a corner wheel ⑹ and spring needles on a needle shaft ⑺, spring needle set ⑶ is mounted on a movable needle seat ⑷, and movable needle seat ⑷ is mounted on a guide post of bottom plate ⑴; referring to fig. 2, a support seat ⑸ is fixed on a bottom plate ⑴, a sheave shaft ⑻ is mounted on a support seat ⑸, an eccentric wheel mounted on the shaft of the sheave shaft ⑻ and a movable needle seat ⑷ form cam connection, and a sheave driving rod ⑵ is mounted on the bottom plate ⑴; as can be seen from fig. 3, when the sheave driving rod ⑵ moves, the sheave shaft ⑻ rotates, and the eccentric wheel on the sheave shaft ⑻ at the position of the moving needle seat ⑷ drives the moving needle seat ⑷ to move up and down, so as to complete the action of penetrating and leaving the fabric by the spring needle point; continuously moving the grooved pulley driving rod ⑵, wherein the bulge on the grooved pulley driving rod pushes the corner wheel ⑹ to enable the needle shaft ⑺ to rotate, so that the spring needle group ⑶ is caused to rotate, and tensioning and releasing actions of the flexible fabric are realized; in order to complete the tensioning of the flexible fabric, the spring needle groups ⑶ need to be used in pairs, and a single pair of spring needle groups ⑶ can complete the linear tensioning and positioning of the fabric, and 2 pairs or more are used, so that the spring needle groups are suitable for tensioning and positioning in a larger area.

In glove production, considering that the fabric is paved, the tensioning of one finger of the glove can be completed only by a single spring needle group ⑶ with a rotation angle smaller than 10 degrees, and the moving distance of the moving needle seat ⑷ is smaller than 15mm, so that the glove sewing process can be controlled conveniently.

The adopted spring needle point can also be tooth-shaped, so that the damage of the spring to glove fabric can be reduced. If a plurality of pairs of spring pins are adopted, the tensioning of the large-area fabric can be completed.

The following describes the method of using the present invention in detail with reference to fig. 3:

As shown in fig. 3, the lower surface of the bottom plate ⑴ is attached to the fabric, when the grooved pulley driving rod ⑵ moves, the grooved pulley shaft ⑻ is driven to rotate, the movable needle seat ⑷ is moved by the eccentric wheel on the grooved pulley shaft ⑻, and the needle tip of the spring needle group ⑶ mounted on the movable needle seat ⑷ penetrates through the fabric; the grooved pulley driving rod continuously moves ⑵, the cam wheel ⑹ is driven to enable the needle shaft ⑺ to rotate, the spring needle group ⑶ is rotated, the needle tip relative positions of the spring needle groups ⑶ used in pairs are increased, and tensioning and positioning of fabric are completed; when the grooved pulley driving rod ⑵ moves reversely, the reverse sequence of the actions is realized, so that the working cycle that the needle point penetrates through the fabric and is tensioned, and the needle point is folded and leaves the fabric after the fabric is processed is completed.

Although the preferred embodiments of the present invention have been described and illustrated in detail, the present invention is not limited thereto. It will be appreciated that numerous modifications and variations can be made thereto by those skilled in the art without departing from the spirit and principles of the invention, the scope of which is defined by the claims.

Claims

1. A rotary multi-point tensioning positioning device comprising: a base plate ⑴, a sheave drive rod ⑵, a spring needle group ⑶, a moving needle seat ⑷, a supporting seat ⑸, a corner wheel ⑹, a needle shaft ⑺ and a sheave shaft ⑻; the method is characterized in that: the spring needle group ⑶ is formed by sequentially fixing a corner wheel ⑹ and a spring needle on a needle shaft ⑺, the spring needle group ⑶ is installed on a movable needle seat ⑷, the movable needle seat ⑷ is installed on a guide post of the bottom plate ⑴, a supporting seat ⑸ is fixed on the bottom plate ⑴, and a grooved wheel shaft ⑻ is installed on the supporting seat ⑸;

An eccentric wheel arranged on the shaft of the grooved pulley shaft ⑻ is connected with the movable needle seat ⑷ by a cam;

The sheave drive rod ⑵ is mounted on the bottom plate ⑴, and its movement rotates the sheave shaft ⑻ and the corner wheel ⑹;

The spring needle groups ⑶ are used in pairs, at least 2 pairs;

The tip of the spring needle is toothed.

2. A rotary multi-point tensioning positioning device as defined in claim 1, wherein: the single spring needle set ⑶ rotates less than 10 deg., and the moving needle holder ⑷ moves less than 15mm.