CN201941325U

CN201941325U - PVC- based wood-plastic environment-friendly pencil

Info

Publication number: CN201941325U
Application number: CN2011200258744U
Authority: CN
Inventors: 杨大可
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-26
Filing date: 2011-01-26
Publication date: 2011-08-24
Anticipated expiration: 2021-01-26

Abstract

The utility model relates to a PVC-based wood-plastic environment-friendly pencil, which comprises a pencil core and a pencil rod. The pencil rod is made by press fitting two pencil half bodies. Said pencil half body is made of PVC-based wood-plastic composite material, and provided with a semicircular center groove for installing the pencil core. The PVC-based wood-plastic environment-friendly pencil has a reasonable structure, and can avoid the problem of pencil core fracture when sharpening resulted from wood planning eccentricity. The pencil made of PVC-based wood-plastic composite material can save wood resources, and is cost-efficient and environment-friendly.

Description

The PVC sill is moulded environment protection type pencil

Technical field

The utility model relates to a kind of PVC sill and moulds environment protection type pencil.

Background technology

A whole world year production pencil reaches 30,000,000,000, and is wherein over half from China, produces nearly 20,000,000,000 per year, for world's pencil production exports first state.China will consume nearly 100 ten thousand steres of timber for Wood-bar pencil every year.According to 1 ton of Wood-bar pencil of the every production of measuring and calculating, need to consume 18 of the above high-quality lindens of life in 10 years.Produce 20000000000 pencils per year by China and calculate, need 1,000 ten thousand high-quality lindens of felling, consume timber ten thousand stere more than 70, be equivalent to 20000 hectares forest.Common one hectare of broad-leaf forest can consume 1000 kilograms carbon dioxide in one day, discharged 730 kilograms oxygen, with the carbon dioxide that consumes 7,500,000 tons year, discharged 5,400,000 tons oxygen.

The pencil shaft of traditional Wood-bar pencil is generally used linden production, and its operating process is generally: (1) linden sawmilling, block, and log is straightened one out and eased out his anxiety, evolution, saw piece, boils wood, cutting plate, rule limit machine and makes former base pencil plate; (2) by attachment strap machine, dry kiln, dye the plate jar and carry out former blanket drying, painted; The roasting plate machine of application, chemicals consersion unit carry out roasted, the softening degenerative treatments of pencil plate; (3) use keyway planer, glue heart bundle folder machine, plane bar machine, sanding machine to carry out pencil plate heart plow and cut, embedding heart gummed, white shaft pencil is made in the planing polishing; (4) carry out white bar monochrome, polychrome japanning, topping printing, thermoprint transfer printing, lac varnish glazing through painting machine, printing machine, thermal printer; Cut light, print, dip in head, processes such as the assembling of dress rubber tip parts, finished product general assembly make pencil.Traditional Wood-bar pencil, volume recovery is low, and yield rate is low, and wood consumption is big; And it is inaccurate and volume that cause core shift seriously to cause is cut the problem that disconnected whole pencil of core can't use that the form of a stroke or a combination of strokes takes place Wood-bar pencil easily.

Summary of the invention

The purpose of this utility model is to provide a kind of PVC sill to mould environment protection type pencil, and this PVC sill is moulded the rational in infrastructure of environment protection type pencil, and accurate positioning has been avoided causing pen core to rupture easily because of the rod distortion; Adopt the PVC base wood-plastic composite material, utilized discarded wood chip, wood powder, save timber resources, cost is low.

The technical solution of the utility model is: a kind of PVC sill is moulded environment protection type pencil, comprise pencil-lead and pencil shaft, it is characterized in that: described pencil shaft is made by the pressing of two pencil halfbodies, described pencil halfbody is made by the PVC base wood-plastic composite material, and described pencil halfbody is provided with the semicircle central channel that is used to install pencil-lead.

Also be provided with on the described pencil halfbody and be convenient to the male and female groove that two pencil halfbodies cooperate, female groove of male and female groove is a groove, and the public groove of male and female groove is a raised line.

The utlity model has following advantage:

(1) the PVC base wood-plastic composite material is to be 40% ~ 55% PVC by weight ratio, 1% ~ 3% stabilizing agent, 1% ~ 2% processing aid, 2% ~ 3% impact modifier, 2% ~ 5% lubricant, 1% ~ 2% foaming control agent and 35% ~ 50% wood powder are formulated, utilized discarded wood powder wood chip, make the PVC sill mould environment protection type pencil and have the good wooden sense organ of natural timber, cost is low, substituted monoblock timber, helped solving the forest reserves problem that China reduces day by day, resource is fully utilized;

(2) this pencil halfbody be by the PVC base wood-plastic composite material after the granulation of conical double-screw mixing granulator machine, utilize mould particle to be extruded injection moulding or die forming make with extruder or injection machine or molding apparatus again; Central channel, the male and female groove location structure of the penholder of two pencil halfbodies merging are arranged, can avoid wooden pencil shaft fully because channeling off-centre produces the phenomenon of dystopy when closing up, it is simple that technology becomes; Because the pencil halfbody is by the precision die one-shot forming, dimensional standard precision height has been avoided Wood-bar pencil that the volume that the channeling core shift causes takes place easily and has been cut the problem that disconnected whole pencil of core can't use.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of the utility model first embodiment.

Fig. 2 is the cross-sectional structure schematic diagram of the utility model second embodiment.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of PVC sill of the utility model first embodiment is moulded environment protection type pencil, comprise pencil-lead 1 and pencil shaft, it is characterized in that: described pencil shaft is made by two pencil halfbody 2 pressings, described pencil halfbody 2 is made by the PVC base wood-plastic composite material, and described pencil halfbody 2 is provided with the semicircle central channel 21 that is used to install pencil-lead 1.The cross section of pencil shaft shown in Figure 1 is rounded, and not pressing, because pencil halfbody 2 is about pencil shaft center symmetry, pencil halfbody 2 semicirculars in shape, certainly pencil shaft also can be oval, more can be polygonals such as triangle, hexagon, only needs to change mould and get final product.

As shown in Figure 2, a kind of PVC sill of the utility model second embodiment is moulded environment protection type pencil, be that PVC sill in first embodiment is moulded to have additional on the pencil halfbody 2 of environment protection type pencil and is convenient to the male and female groove that two pencil halfbodies 2 cooperate, female groove of male and female groove is a groove 22, the public groove of male and female groove is a raised line 23, and male and female groove can also be other structures certainly.The cross section of pencil shaft shown in Figure 2 is hexagon, pressing, and pencil shaft also can be circular, oval certainly, more can be polygonals such as triangle, pentagon, only needs to change mould and get final product.

This PVC sill is moulded environment protection type pencil and can adopt can one-time continuous be shaped many even tens PVC sills of extrusion molding production technology to mould the environment protection type pencil bar, and technology is simple, the yield rate height, and production efficiency is high; Significantly reduce equipment cost and cost of labor; This PVC sill is moulded environment protection type pencil no matter be the hexgonal structure or the pencil of the pencil of circular configuration or other structures, as long as the pencil shaft of be shaped producing a kind of shape just can two is worked in coordination, the smooth surface size is evenly unified, length can be extended arbitrarily and cut, and is very convenient in penholder production and pencil-lead installation; Can also add different harmless pigments to be made into the texture of various seeds, have the sense organ of natural timber.

The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims

1. a PVC sill is moulded environment protection type pencil, comprise pencil-lead and pencil shaft, it is characterized in that: described pencil shaft is made by the pressing of two pencil halfbodies, and described pencil halfbody is made by the PVC base wood-plastic composite material, and described pencil halfbody is provided with the semicircle central channel that is used to install pencil-lead.

2. PVC sill according to claim 1 is moulded environment protection type pencil, it is characterized in that: also be provided with on the described pencil halfbody and be convenient to the male and female groove that two pencil halfbodies cooperate, female groove of male and female groove is a groove, and the public groove of male and female groove is a raised line.

3. PVC sill according to claim 1 is moulded environment protection type pencil, it is characterized in that: the cross section of described pencil shaft is rounded, ellipse or polygon.