Warm-Edge Spacer Applicator for Twist-Free Corner Sealing

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Solution Overview

Problem

Conventional spacer applicators for insulating glass require double positioning of the spacer starting point after each application, leading to reduced efficiency and issues like twisting, deformation, and large corner curvature due to the elasticity of butyl rubber spacers.

Innovation Solution

A spacer applicator with a glass carrying frame, motion mechanism, and a pressing mechanism that includes a cutter positioned away from the driving wheel, allowing for continuous spacer feeding and stable positioning, along with a rotating head and adjustable support frame for various glass sizes and shapes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cutter is positioned on the tail end of the head before spacer applying is completed, then the spacer can be cut in advance, but the starting point of the spacer needs to be positioned twice which reduces spacer applying speed and causes poor sealing

Engineering Contradiction:
Improvespacer applying speedVSAvoidstarting point position accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The cutter is positioned at the front end of the head, allowing the spacer to be cut before it enters the applying area. This preliminary cutting action eliminates the need for secondary positioning after application, as the spacer length is predetermined by the cutting position, thereby improving both speed and positioning accuracy.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Instead of positioning the cutter at the tail end and cutting after the spacer is applied, the invention inverts the sequence by positioning the cutter at the front end to cut the spacer before application. This reversal of the conventional sequence eliminates the double positioning requirement and improves sealing quality.

Inventive Principle:
Principle #13The other way round (Inversion)

2Adaptability or versatility

If the head rotates 90 degrees to change sealing direction at corners, then the spacer can be applied to corner edges, but the elastic butyl rubber spacer tilts and twists causing deformation and large corner curvature

Engineering Contradiction:
Improvecorner sealing capabilityVSAvoidspacer shape accuracy
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The spacer is cut to the exact required length before application, so when the head rotates at corners, the spacer maintains its proper length and does not twist or deform. This preliminary sizing action prevents the elastic spacer from tilting and twisting during corner applications.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

By controlling the spacer length parameter through precise cutting before application, the invention ensures that the elastic butyl rubber spacer maintains its dimensional stability during rotation at corners, preventing deformation and achieving accurate corner sealing.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250283372A1Spacer applicator and spacer applying method for insulating glass
Publication Date: 2025.09.11 PANJIN XINGHUA MACHINERY MANUFACTURING CO LTD
  • US20250283372A1 patent drawing
  • US20250283372A1 patent drawing
  • US20250283372A1 patent drawing

AI summary

The present invention discloses a spacer applicator and a spacer applying method for insulating glass, and belongs to the technical field of insulating glass pulling belt bonding. The present invention aims to solve the problem that the conventional spacer applicator for insulating glass needs to position a starting point of a spacer twice after completing the spacer applying once, and the warm edge spacer after the spacer applying is also prone to twisting, deformation, and large corner curvature. The present invention includes a glass carrying frame, a motion mechanism for driving glass to move horizontally being mounted on the glass carrying frame, a fixing column being connected to a surface on one side of the glass carrying frame on which the motion mechanism is mounted, a head being slidably connected to the fixing column, a spacer feeding mechanism being provided on an outer side of the glass carrying frame.