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Technology for making small-diameter logs into laminated wood

A technology of glulam and logs, which is applied in the direction of wood processing equipment and manufacturing tools, can solve the problems of small-diameter log waste, low production efficiency, adhesive waste, etc., and achieve short cold pressing cycle, high production efficiency, and compact assembly way simple effect

Inactive Publication Date: 2011-03-09
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter which sawing method you choose, the purpose is to increase the yield of the board. However, sawing is required to prepare the standard board, which will inevitably cause the loss of the sawing road, that is, the waste of small-diameter logs is serious.
In addition, gluing the standard boards into glulam will cause a lot of waste of adhesive, and the process is complicated and the production efficiency is low

Method used

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  • Technology for making small-diameter logs into laminated wood
  • Technology for making small-diameter logs into laminated wood
  • Technology for making small-diameter logs into laminated wood

Examples

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Embodiment Construction

[0018] Below by embodiment the present invention will be further described.

[0019] 1. Fixed length: Small-diameter logs of different lengths are longitudinally cut or length-fixed, and 2m-long small-diameter log segments are prepared, and then log segments of different diameter classes are sorted, such as figure 2 shown.

[0020] 2 Square material processing: Through the self-adaptive shaving and lumber combining machine, log segments of different diameters and lengths are processed into different small-sized regular hexagonal prisms (1) and semi-regular hexagonal prisms (2), such as image 3 and Figure 4 shown.

[0021] 3 Glue coating: through the automatic glue coating device, the small-sized regular hexagonal prism (1) or semi-regular hexagonal prism (2) is coated with EPI cold pressure glue on multiple or three sides, such as figure 1 (3) shows the adhesive layer.

[0022] 4 groups of blanks: according to the needs, the same small-sized regular hexagonal prism (1) ...

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Abstract

The invention relates to a technology for making small-diameter logs into laminated wood, which comprises the following steps: sorting the logs with standard diameter, cutting off the long small-diameter logs with fixed length and extending the short small-diameter logs with fixed length to obtain log sections with standard length; cutting the log sections with standard length into small-sized regular hexagonal prisms or semi-regular hexagonal prisms; coating cold pressing adhesives on a plurality of surfaces of the prisms; and carrying out assembling in a certain mode, cold-pressing under high frequency and aging to obtain the laminated wood. The technology of the invention can effectively improve the utilization ratio of the small-diameter logs, enhance the strength and the dimensional stability of the laminated wood made of the small-diameter logs, enlarge the application field of the laminated wood made of the small-diameter logs, increase the added value of the small-diameter logs and improve the production efficiency of the laminated wood.

Description

(1) Technical field [0001] The invention relates to a technology for preparing glued wood from small-diameter logs, which belongs to the technical field of wood composite material manufacturing. (2) Background technology [0002] With the decrease of natural large-diameter high-quality timber, the proportion of short-period plantation forests in timber resources is increasing, and small-diameter logs from plantation forests will become one of the main timber resources in my country, such as metasequoia, eucalyptus, masson pine and other southern trails material. According to the national timber standard, the diameter of small-diameter logs is 6-16cm, and the length of the inspection ruler is 2-6m. At present, the processing and utilization of small-diameter logs is unreasonable, and the sawn timber yield and utilization rate are low. [0003] The existing small-diameter log utilization method is mainly to improve the yield of small-diameter logs through different sawing met...

Claims

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Application Information

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IPC IPC(8): B27M1/00
Inventor 曹平祥郭晓磊王宝金丁建文
Owner NANJING FORESTRY UNIV
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