Adjustable Clamp Bending Device for Laminated Wood

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Solution Overview

Problem

Existing devices for manufacturing laminated wood bent elements are limited in their ability to produce different bending profiles without requiring separate molds for each profile, making it difficult to efficiently manufacture various shapes such as arches, S-shaped elements, and other complex forms.

Innovation Solution

A device featuring a working board with a grid of regularly spaced fixing holes and adjustable clamps, where each clamp has a retaining plate and clamping plate connected by hydraulic cylinders, allowing for precise positioning and bending of laminated wood elements into various shapes by arranging clamps according to the desired curvature, enabling the production of multiple shapes on a single board.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If separate molds are used for each bending profile, then manufacturing precision for specific shapes is improved, but device complexity and production time increase

Engineering Contradiction:
Improvebending profile precisionVSAvoidnumber of molds
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent implements a universal bending device with adjustable clamps that can produce multiple bending profiles (arches, S-shaped elements, etc.) on a single working board. The clamps can be repositioned along guide rails to different coordinates, allowing the same device to create various curvature profiles without requiring separate molds for each shape.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device employs dynamically adjustable clamps that can be moved to different positions along the working board's guide rails. This dynamic repositioning capability allows the clamps to adapt to different bending profile requirements, transforming a static mold system into a flexible, multi-functional system.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If multiple separate devices are used for different shapes, then manufacturing precision for each shape is maintained, but productivity decreases

Engineering Contradiction:
Improveshape accuracyVSAvoidproduction efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent creates a single multi-functional device that can produce various bent wood elements (arches, S-shaped profiles, etc.) on one working board. This eliminates the need to switch between multiple dedicated devices, thereby maintaining shape accuracy while significantly improving production efficiency.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges multiple shape-specific functions into a single device by combining adjustable clamps, guide rails with coordinate markings, and a unified working board. This consolidation allows different bending profiles to be produced on one device rather than requiring separate devices for each profile type.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If fixed molds are used for bending, then manufacturing precision is improved, but adaptability to different profiles deteriorates

Engineering Contradiction:
Improvebending consistencyVSAvoidprofile variety
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent replaces fixed molds with dynamically repositionable clamps that can be moved along guide rails to different coordinates. This dynamic system maintains bending consistency through precise positioning while enabling adaptation to various profiles by simply repositioning the clamps rather than changing entire mold structures.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The device segments the bending process into controllable sections by using multiple independent clamps that can be positioned at different locations along the working board. Each clamp can be independently adjusted to create specific curvature sections, allowing complex profiles like S-shaped elements to be constructed from multiple segmented bends.

Inventive Principle:
Principle #1Segmentation

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

Enables the simultaneous bending and pressing of laminated wood elements into diverse profiles, including arches and S-shaped elements, on a single device, allowing for efficient production of complex shapes without the need for multiple molds, and allows for the extension of working boards to accommodate larger dimensions.

Implementation Method 1

Each clamp comprises a bottom beam to which a retaining plate with the screw is fixed, perpendicular to the bottom beam and a clamping plate perpendicular to the bottom beam are attached. The clamping plate is slidably attached in the clamp by means of a screw.

Methodology Applied
Scientific EffectHydraulic pressure: Hydraulic Press

Data Source

PatentEP3416791B1Device for the manufacture of laminated wood bent elements
Publication Date: 2019.09.11 JAGRAM PRO
  • EP3416791B1 patent drawingFigure 1
  • EP3416791B1 patent drawingFigure 2~4
  • EP3416791B1 patent drawingFigure 5

AI summary

A device for the manufacture of laminated wood bent elements (4) comprises a working board (1 ) with fixing holes (2) and a clamps (3) assembly. Each clamp (3) comprises a bottom beam (8) and a removable upper beam (9). To the beams (8,9) a retaining plate (19) and a clamping plate (13) perpendicular to the working board (1 ) are attached. The clamping plate (13) is slidably attached in the clamp (3) by means of piston rods (14) of hydraulic cylinders (12). The fixing holes (2) in the working board (1 ) are regularly spaced, according to the directions of the Cartesian coordinate system (x,y). Each clamp (3) comprises a base pin (17) rotatably and detachably mounted in the fixing hole (2) of the working board (1 ). Each fixing hole (2) in the working board (1 ) contains the assigned number of the horizontal row and the number of the vertical column in the Cartesian coordinate system (x, y).