Hot Wedge Welding Apparatus Tilting Mount
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Solution Overview
Problem
Existing hot wedge welding devices for plastic webs face challenges in maintaining optimal alignment with pressure rollers, leading to distortion and reduced welding quality due to excessive force and chassis twisting during the overlap welding process.
Innovation Solution
The hot wedge welding device features a pivotable and tiltable hot wedge attachment system using bearing bushes and shafts, allowing for independent adjustment and alignment with the pressure rollers without additional force, enabling precise positioning and adaptation to the deformation of the chassis and rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the upper pressure roller is fastened to the chassis via a clamping arm with spring force, then the pressure roller can exert high tension on the plastic webs, but the chassis twists causing the pressure rollers to no longer extend parallel to the front edge of the hot wedge
Solution Approach 1:
The hot wedge is made tiltable relative to the chassis through the bearing bush and bearing shaft mechanism, allowing it to dynamically adjust its position in response to chassis deformation. This dynamic adaptation ensures the hot wedge maintains proper alignment with the pressure rollers even when the chassis twists under load, resolving the contradiction between applying high tension force and maintaining shape alignment.
2Adaptability or versatility
If the hot wedge is rigidly attached to the chassis, then the structure is simple and stable, but the hot wedge cannot adapt to the position of the pressure rollers causing distortion of the welding section
Solution Approach 1:
The bearing bush and bearing shaft create a controlled dynamic joint that allows the hot wedge to tilt and adapt to pressure roller position while maintaining structural integrity. This dynamic connection provides the necessary adaptability without requiring complex adjustment mechanisms or multiple components.
Solution Approach 2:
The bearing bush acts as an intermediary element between the hot wedge and chassis, mediating the connection by allowing controlled tilting motion. This intermediary component enables adaptation to pressure roller position while keeping the overall attachment mechanism relatively simple.
3Shape
If additional force is applied to align the hot wedge with the pressure rollers, then the alignment can be achieved, but the welding section experiences excessive force leading to distortion and reduced welding quality
Solution Approach 1:
The tiltable hot wedge design allows the system to achieve proper alignment through passive mechanical adaptation rather than active forcing. The bearing bush enables the hot wedge to naturally tilt into the correct position in response to pressure roller location, eliminating the need for additional aligning forces that would distort the welding section.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures improved welding quality and increased welding speed by allowing the hot wedge to adapt seamlessly to the position of the pressure rollers, minimizing deformation and maintaining optimal alignment, thus enhancing the overall welding process.
Implementation Method 1
the hot wedge can by means of at least one bearing bush (19), which extends between the two flat sides of the hot wedge, pivot on a bearing shaft (21)
Data Source
Figure 1~2
Figure 3~4
AI summary
Hot wedge welding device (1) for overlapping welding of plastic sheets, comprising a hot wedge (2), a pressure device for applying the plastic sheets to the hot wedge (2), the device comprising a pressure unit (13, 14) assigned to each of the flat sides (15, 16) of the hot wedge, and two opposing pressure rollers (8, 9) for pressing the plasticized plastic sheets together. The hot wedge (2) is pivotably mounted on a bearing shaft (21) by means of a bearing bushing (19) which extends between the two flat sides (15, 16) of the hot wedge parallel to the leading edge (5) of the hot wedge at a distance from each other. The heating wedge (2) is mounted in such a way that it has defined degrees of freedom in the longitudinal and transverse directions of the bearing bushing (19) relative to the bearing shaft (21), which, in addition to the rotational movement of the heating wedge (2) about its transverse axis, also allow a tilting movement of the heating wedge (2) about its longitudinal axis and a vertical displacement of the heating wedge (2).