Ring Spinning Gripper for Two-Stage Spinning Tube Removal

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Solution Overview

Problem

The challenge in ring spinning machines is the limited space and accessibility above the spinning tube due to balloon constriction rings and drafting systems, making it difficult to remove the spinning tube during maintenance operations.

Innovation Solution

A gripper with multiple gripping sections and positions is used to securely remove the spinning tube by initially grasping it from above and then moving it to an intermediate position, creating additional space for removal, while avoiding contact with the yarn and balloon constriction rings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the spinning tube is removed directly from the spinning position, then the maintenance operation can be performed, but the limited space above the spinning tube due to balloon constriction rings and drafting systems prevents proper gripping and removal

Engineering Contradiction:

Improveremoval of spinning tubeVSAvoidspace above spinning tube

Core Design Contradiction:

Ease of operationVSArea of stationary object

Solution Approach 1:

The gripper is divided into two gripping sections: a first gripping section that grasps the spinning tube from above in the spinning position, and a second gripping section that grasps the spinning tube from below in an intermediate position. This segmentation allows the removal operation to be performed in two stages, utilizing the limited space above the spinning tube for the first grip and then moving to the intermediate position for the second grip, thereby overcoming the space constraint.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The removal process transitions from a single vertical dimension (direct removal from spinning position) to a two-dimensional approach by introducing an intermediate position. The spinning tube is first gripped in the spinning position, then moved to an intermediate position where it can be gripped from below, effectively using horizontal movement to solve the vertical space constraint.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the gripper grasps the spinning tube from above, then it can be removed, but the balloon constriction rings and drafting systems restrict access to the spinning tube

Engineering Contradiction:

Improveaccess to spinning tubeVSAvoidballoon constriction rings and drafting systems

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The first gripping section performs a preliminary action by grasping the spinning tube from above in the spinning position, securing it before the second gripping section can access it from below. This preliminary grip ensures the spinning tube is controlled and stabilized, allowing the second gripping section to then move to the intermediate position and grasp the spinning tube from below without interference from the balloon constriction rings and drafting systems.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The intermediate position serves as an intermediary state between the spinning position and the final removal position. By moving the spinning tube to this intermediate position where it can be gripped from below, the system creates a intermediary space that is free from the constraints of the balloon constriction rings and drafting systems, enabling safe and effective removal.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Area of stationary object

If the spinning tube is moved to an intermediate position, then more space is created for removal, but the gripping mechanism becomes more complex

Engineering Contradiction:

Improvefree space for removalVSAvoidgripper structure

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The gripper is designed with multi-functionality, where the same gripper device performs multiple functions: the first gripping section grasps the spinning tube from above in the spinning position, and the second gripping section grasps the spinning tube from below in the intermediate position. This universal design allows a single gripper mechanism to handle both gripping actions, avoiding the need for separate gripping devices and thereby limiting the increase in device complexity despite the two-stage removal process.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4310230B1Method for operating a ring spinning machine, maintenance device for a ring spinning machine and ring spinning machine

Publication Date: 2025.08.06 RIETER CZ AS

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AI summary

In a maintenance device (14) for a ring spinning machine (1), which is designed to remove a spinning sleeve (4) at least temporarily from a working position (2) of the ring spinning machine (1) during a maintenance operation, wherein the maintenance device (14) has a gripper (15) for grasping the spinning sleeve (4), it is provided according to the invention that the gripper (15) has at least a first gripping section (16) and a second gripping section (17) for grasping the spinning sleeve (4), wherein the gripper (15) is designed to assume at least a first gripping position (18) and a second gripping position (19). A first inner diameter (22) defined by the first gripping section (16) in the first gripping position (18) corresponds essentially to a second inner diameter (24) defined by the second gripping section (17) in the second gripping position (19).