CN203805159U

CN203805159U - Multi-wire cutting guide wheel

Info

Publication number: CN203805159U
Application number: CN201420176786.8U
Authority: CN
Inventors: 韩少华; 张立; 张久东; 高峰; 于晋京; 范立军
Original assignee: SHANGHAI QIFA ELECTRONICS TECHNOLOGY CO LTD
Current assignee: SHANGHAI QIFA ELECTRONICS TECHNOLOGY CO LTD
Priority date: 2014-04-11
Filing date: 2014-04-11
Publication date: 2014-09-03
Anticipated expiration: 2024-04-11

Abstract

The utility model provides a guide wheel used for compensating changes of the diameters of steel wires in multi-wire cutting. The guide wheel is conical, and can improve product quality and production yield.

Description

A kind of multi-wire saw guide wheel

Technical field

The utility model provides a kind of guide wheel changing for compensating steel wire diameter in multi-wire saw.

Background technology

Along with the development of photovoltaic and semiconductor industry, each downstream manufacturers is had higher requirement to the quality of silicon sheet material.For meeting the high request of each downstream manufacturers, silicon chip cutting technique is proposed to higher challenge.The multi-line cutting methods that adopt cut into bar to be processed to have certain thickness sheet products more at present.Equidistant by being carved with on guide wheel in multi-wire saw, etc. dark V-type groove (hereinafter to be referred as wire casing), when cutting, started to be wound to respectively other guide wheels according to clockwise or counterclockwise order from first groove of first guide wheel of lathe by a complete steel wire, and it is wired in first groove due to guide wheel in the time that steel wire is got back to first guide wheel again, steel wire must start to be wound around along the 2nd of this guide wheel groove, when steel wire by all grooves in guide wheel all when full, between guide wheel, both formed the gauze of densely covered steel wire, use this gauze to carry out cutting operation (as shown in Figure 1).Because the gauze for cutting is that a steel wire is entwined on multiple guide wheels, thus when cutting due to the cutting through gauze front end of the steel wire of gauze end after, its diameter diminishes, it is high that whole gauze presents gauze top, the state that end is low.Like this, in the time of cutting, the distance between gauze and crystal is inconsistent, easily causes the quality of the silicon chip cutting out unstable, reduces and produces yield.

Utility model content

For reaching above-mentioned utility model object, the utility model by the following technical solutions:

A kind of multi-wire saw guide wheel, changes for compensating steel wire diameter, comprises multiple guide wheels and is wrapped in the steel wire on guide wheel, it is characterized in that: described guide wheel is tapered.

Alternatively, the diameter of described guide wheel increases to leading-out terminal and gauze end respectively gradually along lead-in wire terminal and gauze top, the setting of its diameter variable quantity A: 0 < A≤0.6mm.

Alternatively, also comprise actinobacillus wheel, take-up pulley, mortar nozzle, wherein, steel wire is emitted from actinobacillus wheel, on described guide wheel, is wound around, and described steel wire carries the mortar being sprayed by mortar nozzle can cut processed bar, finally can put steel wire away by take-up pulley.

Application the utility model, can compensate steel wire diameter and change, and makes wire cutting machine center line net height consistent, avoids occurring the inconsistent phenomenon of distance between gauze and crystal.Like this, the stability that can improve the quality of products, improves and produces yield.

Brief description of the drawings

Fig. 1 guide wheel is wound around the schematic diagram of gauze;

Fig. 2 is taper guide wheel gauze top of the present utility model and gauze end schematic diagram;

Fig. 3 is common guide wheel gauze top and gauze end gauze difference in height schematic diagram.

Detailed description of the invention

Fig. 1 guide wheel is wound around the schematic diagram of gauze: in figure, 1 is actinobacillus wheel, and 2 is gauze, and 3 is guide wheel group, and 4 is processed bar, and 5 is mortar nozzle, and 6 is take-up pulley.Steel wire is emitted from actinobacillus wheel 1, is wound in gauze 2 in guide wheel group 3, carries by the mortar of ejection in mortar nozzle 5 and cuts processed bar 4 with gauze 2, is finally put away by take-up pulley 6.

Equidistant by being carved with in guide wheel group 3 in multi-wire saw as shown in Figure 1, (in figure, do not show etc. dark V-type groove, hereinafter to be referred as wire casing), when cutting, started to be wound to respectively other guide wheels according to clockwise or counterclockwise order from first groove of first guide wheel of lathe by a complete steel wire, and it is wired in first groove due to guide wheel in the time that steel wire is got back to first guide wheel again, steel wire must start to be wound around along the 2nd of this guide wheel groove, when steel wire by all grooves in guide wheel all when full, between guide wheel, just form the gauze 2 of densely covered steel wire, use this gauze to carry out cutting operation.

Fig. 3 is common guide wheel gauze top and gauze end gauze difference in height schematic diagram.Because guide wheel diameter is consistent, there is height difference H in its head and afterbody gauze.

Fig. 2 is taper guide wheel gauze of the present utility model top 21 and gauze end 22 schematic diagrames.Between guide wheel head diameter D1 and tail diameter D2, exist a diameter poor, due to the poor existence of diameter, made up steel wire diameter and changed the difference in height of gauze end to end causing, make gauze top 21 highly consistent with gauze end 22.

Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to including these changes and modification.

Claims

1. a multi-wire saw guide wheel, changes for compensating steel wire diameter, comprises multiple guide wheels and is wrapped in the steel wire on guide wheel, it is characterized in that: described guide wheel is tapered.

2. multi-wire saw guide wheel according to claim 1, is characterized in that: the diameter of described guide wheel increases to leading-out terminal and gauze end respectively gradually along lead-in wire terminal and gauze top, the setting of its diameter variable quantity A: 0 < A≤0.6mm.

3. multi-wire saw guide wheel according to claim 2, it is characterized in that: also comprise actinobacillus wheel, take-up pulley, mortar nozzle, wherein, steel wire is emitted from actinobacillus wheel, on described guide wheel, is wound around, described steel wire carries the mortar being sprayed by mortar nozzle can cut processed bar, finally can put steel wire away by take-up pulley.