Groove drum, groove drum manufacture method and weaving loom for weaving loom
Technical field
The present invention relates to the groove drum of the weaving loom for manufacturing cross winding bobbin, has and is used to yarn being laid on intersection
Multiple grooves on winding bobbin, wherein these grooves have crossover sites and reversion position.The invention further relates to groove drum manufacture method
And the weaving loom with this groove drum.
Background technology
EP2746206A2 discloses a kind of weaving loom for manufacturing cross winding bobbin and especially up- coiler, and it has groove
Cylinder.Driven on the groove drum that cross winding bobbin is located at turn around and whereby.Yarn is laid on the surface of cross winding bobbin and borrowed
The groove helped in groove drum is carried out.These grooves form backpitch groove so that the groove has crossover sites and reversion position.
Contact with moving yarn causes the abrasion at groove, especially in crossover sites and inverts the abrasion at position very
Greatly.The abrasion is typically further exacerbated because of abrasion yarn such as flax or polyethylene fibre.This abrasion then may be serious
To after the shortest time significant raceway groove and otch are there is in crossover sites and reversion position.
Many measures have been proposed in the past to mitigate abrasion.CH211473 proposes that groove drum is manufactured by ceramic material completely.
DE1175588 proposed, the basic material of groove drum is in granular form or powder meeting with the position of abrasion, especially have at guide edge
The high-abrasive material part of shape insertion.DE1264307 is directed to setting wear-resisting en plaque lining in crossover sites.
EP1496004A1 discloses a kind of method of coated yarns guide surface completely.
The content of the invention
The task of the present invention is to improve the wearability of groove drum.
In order to complete the task, a kind of groove for the multiple grooves for having and being used to lay yarn on cross winding bobbin is proposed
Cylinder, the groove drum only have ceramic coating in crossover sites and reversion position.
The ceramic layer can be by homogenous application.Ceramic layer is with high abrasion protection effect and with the hard of up to 1800HV
Degree.Thickness reaches 120 microns.As layer material, aluminum oxide (AlO can be used3) or titanium oxide (TiO3)。
According to the present invention, ceramic coating is only implemented in the place that it is also consumed.Part defines ceramic coating and prevents coating
Such as it is damaged because of the bobbin cradle of the weaving loom of manufacture cross winding bobbin.Ceramic coating also allow have cated region and
Do not have the smooth transition between cated region.Thus yarn is avoided to be damaged in transition position.
In addition, the task is completed by a kind of groove drum manufacture method.According to the present invention, the ceramic coating is in crossover sites
Applied with reversion position by heat spraying method or electrochemical process.Such painting method is process safety, it is reliable and
It is easily achieved.
Ceramic coating on the metalwork being made up of steel and aluminium has outstanding performance.They are wear-resistant, rub resistance with
And it is electric insulation and heat insulation.The coating is unrelated with metal base material.Thermal spraying for example can with plasma spray coating or
Flame-spraying form is formed.Nano ceramics coating is possible electrochemical method.These painting methods also allow interior coating.These
Therefore method not only allows for the coating on groove drum side face, also allow in through groove.
According in an Advantageous embodiments of the groove drum manufacture method of the present invention, the groove drum is for the application of ceramic coating
It is positioned in the servicing unit of cylindricality, wherein the servicing unit has multiple openings in the crossover sites and reversion position.
The use of this servicing unit allows to produce the ceramic coating for being limited to the crossover sites and inverting position in a simple manner decoupled.
In order to keep servicing unit as far as possible simple, these openings are preferably formed in the form of rectangular window.
Commonly, the groove drum being made up of grey cast-iron receives the processing of hardening and/or corrosion protection.It is known hardening and/or
Anti-corrosion method is, for example, carbo-nitriding (Nitrocarburieren) or chemical nickel plating.
Manufacture with groove drum of the present invention relatively, the groove drum ceramic coating be applied in crossover sites and reversion position it
The just processing of experience hardening and/or corrosion protection afterwards.Ensured by the order for the layer of hardening and/or corrosion protection not because of ceramics
The application of coating and damage.
Brief description of the drawings
The invention further relates to a kind of weaving loom for manufacturing cross winding bobbin with groove drum of the invention.
Hereinafter, the present invention is described in detail with reference to embodiment shown in the drawings, wherein:
Fig. 1 shows the first view of the groove drum according to the present invention;
Fig. 2 shows the second view of Fig. 1 groove drum;
Fig. 3 shows groove drum and the servicing unit for manufacturing groove drum of the present invention;And
Fig. 4 shows Fig. 3 groove drum and servicing unit, and the wherein groove drum is seated in servicing unit.
Embodiment
Fig. 1 and Fig. 2 shows the groove drum 1 according to the present invention from side and from opposite side.Groove drum 1, which has, to be used to intersect volume
Multiple grooves 5 of yarn are laid on bobbin.These grooves 5 correspondingly have multiple crossover sites 2 and multiple reversion positions 3.
Groove drum 1 is preferably manufactured by grey cast-iron GGG40 and is then reworked.Then, only in crossover sites 2 and inversion portion
Apply ceramic coating 4 on position 3.Remaining side face of groove drum 1 keeps no ceramic coating.That is occur on groove drum side face
Region with ceramic coating 4 and the region without ceramic coating.Region with ceramic coating 4 includes the crossover sites 2
With reversion position 3.There is no the region of ceramic coating correspondingly without crossover sites 2 and reversion position 3.
Ceramic coating 4 can apply by heat spraying method or electrochemical process.Ceramic coating, groove drum are defined in order to local
1 is placed in the servicing unit 6 of cylindricality to apply ceramic coating.
The servicing unit 6 of cylindricality is as shown in Figure 3 and Figure 4.Fig. 3 shows groove drum 1 and servicing unit 6 side by side.In Fig. 4
In, groove drum 1 is seated in servicing unit 6.Servicing unit 6 has multiple openings 7, and these openings are in the embodiment shown with rectangle
Window form is formed.These openings 7 are so designed that and arranged, i.e. these openings 7 are accordingly arranged in servicing unit 6 in groove drum 1
When expose with crossover sites 2 and/or invert position 3 region.
After ceramic coating 4 is applied with, groove drum 1 can receive the processing for hardening and/or corrosion protection.Such processing
It can be carried out by carbo-nitriding or chemical nickel plating.