CN218928269U

CN218928269U - Wire saw unit, cutting assembly and wire cutting device

Info

Publication number: CN218928269U
Application number: CN202223562144.5U
Authority: CN
Inventors: 仇健; 吴仁标
Original assignee: Qingdao Gaoce Technology Co Ltd
Current assignee: Qingdao Gaoce Technology Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-28
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a wire saw unit, a cutting assembly and a wire cutting device, comprising: the base and the cutting mechanism of setting on the base, and cutting mechanism includes two at least cutting assemblies, two the independent setting of cutting assembly is between a set of coiling and uncoiling device, and every cutting assembly's cutting wire net sets up for the horizontal plane slope. Through a plurality of independent cutting assemblies of parallelly connected design, can be in guaranteeing every cutting assembly independent work efficiency, still save the hardware cost of equipment more than 25%. The cutting wire net of the multi-wire cutting device is designed to be in an inclined state from a horizontal state, so that the liquid carrying effect of the cutting wire in cutting can be improved, and the cooling efficiency in the cutting process is effectively improved. In addition, the double stations are used as the combined units, and the multi-station cutting device is designed, so that the cutting efficiency is ensured while the equipment cost is further reduced, the occupied space of the equipment is greatly reduced, and meanwhile, the operation efficiency of operators is also improved.

Description

Wire saw unit, cutting assembly and wire cutting device

Technical Field

The utility model relates to the technical field of slicing machines, in particular to a double-station multi-wire cutting device for a diagonal wire network and a multi-station multi-wire cutting device comprising the double stations.

Background

In the technical field of cutting high-hardness brittle materials, a workpiece to be cut, such as a single crystal silicon rod, is usually sliced in a multi-wire cutting mode. During multi-wire cutting, a workpiece to be cut is fixed on a feeding mechanism, and the workpiece is moved relative to a cutting wire mesh through the feeding mechanism so as to realize slicing. However, most of the existing multi-wire cutting devices are used for single-station cutting, functional units such as a wire winding and unwinding mechanism and a control system are required to be independently used, and when the multi-wire cutting device works, one worker is inconvenient to operate a plurality of devices at the same time, so that the cutting efficiency is low; in addition, in the prior art, the multi-wire cutting device is a horizontal wire mesh, the injection condition of cutting fluid is poor during cutting, the cooling effect of a cutting wire and a cut workpiece is affected, and finally the cutting quality is affected. Therefore, a multi-wire cutting device with good cooling effect and high cost performance is needed to solve the problems existing in the prior art.

Disclosure of Invention

Aiming at the technical problems, the technical scheme of the utility model provides a double-station and multi-station multi-wire cutting device for a diagonal wire mesh, which is used for cutting monocrystalline silicon wafers in the photovoltaic field.

The present utility model provides a wire saw unit comprising:

the cutting mechanism is used for winding a cutting line to realize material processing;

the winding and unwinding mechanisms are two groups and are respectively positioned at two sides of the cutting mechanism and used for cooperatively storing and releasing a reciprocating cutting line wound on the cutting mechanism;

the cutting mechanism comprises at least two groups of cutting assemblies capable of independently realizing material processing, a preset inclination angle is arranged between the plane where the axes of the two main cutting rollers of at least one cutting assembly are located and the horizontal plane, and the reciprocating cutting lines are sequentially wound on all main cutting line rollers of the cutting assemblies.

According to the technical scheme, the angle of the preset inclined angle is 20-40 degrees.

According to the technical scheme, two groups of cutting assemblies are arranged, and the preset inclination angles of the two groups of cutting assemblies are equal or complementary.

According to the technical scheme, the preset inclination angles of any two adjacent cutting assemblies in all the cutting assemblies are complementary.

According to the technical scheme, a gap wheel assembly is arranged between any two adjacent cutting assemblies, and the gap wheel assembly is used for realizing transition of a reciprocating cutting line between the two adjacent cutting assemblies.

According to further optimization of the technical scheme, the idler wheel assembly comprises a tension wheel mechanism for adjusting the tension of the cutting line or/and a guide wheel mechanism for changing the routing of the cutting line, so that the tension of the cutting line on all the cutting assemblies is constant.

According to further optimization of the technical scheme, the passing wheel assembly comprises a linear tension wheel and two fixed guide wheels, the linear tension wheel is arranged between the two guide wheels, and the cutting line wound from any cutting assembly sequentially passes through the guide wheels, the linear tension wheel and the other guide wheel and then enters the adjacent cutting assembly.

According to further optimization of the technical scheme, the cutting assembly further comprises at least one auxiliary cutting roller, and the auxiliary cutting roller is used for expanding a cutting space between an upper cutting wire mesh and a lower cutting wire mesh.

According to further optimization of the technical scheme, the winding and unwinding mechanism comprises a winding and unwinding roller, and a guide wheel or/and a tension mechanism are arranged between the winding and unwinding roller and the adjacent cutting assembly.

According to further optimization of the technical scheme, the winding and unwinding mechanism further comprises a wire arranging wheel mechanism, wherein the wire arranging wheel mechanism is arranged between the winding and unwinding roller and the cutting mechanism, or the winding and unwinding roller and the wire arranging wheel mechanism are integrally arranged.

A cutting assembly comprising a cutting chamber and two wire takeup and paying-off chambers, wherein the two wire takeup and paying-off chambers are respectively positioned at two sides of the cutting chamber, and all cutting assemblies in the wire saw unit are arranged in the cutting chamber; the two groups of wire winding and unwinding mechanisms in the wire saw unit are respectively arranged in the corresponding wire winding and unwinding chambers.

According to further optimization of the technical scheme, the supporting frame of the cutting chamber comprises a front supporting upright post and a rear supporting upright post which are arranged in parallel, and the height of the rear supporting upright post is larger than that of the front supporting upright post; all cutting rollers of the cutting mechanism are rotatably arranged between the front support upright post and the rear support upright post through bearing boxes, and a driving motor of the main cutting roller is positioned at the rear side of the rear support upright post.

According to the technical scheme, the material feeding assembly of the cutting mechanism is arranged on the rear supporting upright post.

The wire cutting device comprises a base, an electrical control system, a liquid path control system and the cutting assembly, wherein two coiling and uncoiling chambers of the cutting assembly are respectively arranged on two sides of the base and are positioned at the lower part of the cutting chamber, and the electrical control system is used for controlling the operation of an incision component in the cutting assembly; the liquid path control system is connected with the cutting chamber and used for providing cutting liquid for the cutting assembly.

According to further optimization of the technical scheme, a group of liquid path control mechanisms and two cutting assemblies are arranged on the base, the two cutting assemblies are respectively located on two sides of the base, and the electric control system and the liquid path control system are respectively located on the base between the two cutting assemblies.

According to the technical scheme, the linear cutting device is a slicing machine or a squaring machine.

Compared with the prior art, the technical scheme of the utility model has the advantages that:

1. through set up the cutting assembly that multiunit can independent operation in a cutting mechanism, cutting efficiency can be along with the corresponding multiple of improvement of cutting assembly's increase, and multiunit cutting assembly sharing hardware such as a set of coiling and uncoiling mechanism, winding displacement mechanism, base, cutting room frame, electric control system and liquid way control system simultaneously have reduced hardware cost to a great extent.

2. Through set up the wheel subassembly between two adjacent cutting assemblies, can make the cutting line realize stabilizing excessively between the cutting roller on the cutting assembly that does not lead to, and through setting up tension pulley mechanism, guaranteed that each cutting assembly's cutting line tension is invariable, be favorable to improving cutting efficiency and cutting quality.

3. According to the technical scheme, the plurality of cutting assemblies are arranged in the same cutting chamber, and compared with a double-station linear cutting device in the prior art, the double-station linear cutting device reduces the occupied area by at least 1/3 under the condition of ensuring the same cutting efficiency; secondly, conveniently control and observe the cutting condition, two stations set up respectively in two cutting rooms among the prior art, and control through electric control system respectively, and the operator need walk back and forth to control and observe between two cutting rooms respectively, and this technical scheme only needs a numerical control system and cutting room, has avoided above-mentioned problem.

4. The liquid carrying capacity of the wire net can be increased by obliquely arranging the cutting wire net. The wire mesh cutting fluid that the level was arranged can have some drip wire mesh because of liquid gravity when spraying on the online net to the cutting fluid that remains on the online net can only bring into the cutting zone through the motion of diamond wire, and such area liquid effect is all limited, and the cutting fluid can only be realized getting into and cooling in the position that is close to the crystalline silicon edge, the oblique wire mesh structure of this application design, cutting fluid can flow into the cutting zone along the diamond wire by gravity's component effect on the oblique wire net, and cutting fluid also is difficult to drip and pierce through the wire mesh, in addition the motion effect of cutting line, but the diamond wire gets into the cutting zone more easily, thereby has improved cooling efficiency.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a layout structure of a multi-station multi-wire cutting device for a diagonal network according to the present utility model;

FIG. 2 is a schematic structural view of a diagonal screen double-station multi-wire cutting device of the utility model;

FIG. 3 is a schematic side view of a double-station multi-wire cutting device for a diagonal wire mesh according to the present utility model;

fig. 4 is a schematic structural diagram of another embodiment of a double-station multi-wire cutting device for a diagonal wire mesh according to the present utility model.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Description of the reference numerals:

1-a base; 11-front support posts; 12-rear support posts; 2-a cutting mechanism; 21-a feeding mechanism; 22-cutting rolls; 3-a linear tension wheel; 4-guiding wheels; 5-a coiling and uncoiling device; 51-a wire winding and unwinding roller; 52-wire arrangement mechanism.

Detailed Description

The utility model will be further described with reference to fig. 1-4.

With the development of the photovoltaic cutting technology field, the precision requirement for cutting monocrystalline silicon wafers is higher and higher, so that to achieve high-precision cutting, near perfect design needs to be performed on cutting equipment, the multi-wire cutting equipment in the prior art is mostly designed in the structure of a single-station parallel wire net, the traditional equipment is accepted by most people due to stable cutting, but the quality of a cut workpiece is applied to near perfect by the prior art, so that to make further breakthrough on cutting monocrystalline silicon wafers, further improvement needs to be performed on the multi-wire cutting equipment, especially for the cutting problems caused by cooling of cutting wires and multiple reverse gaps of the equipment in the cutting process, and aiming at the problems in the prior art, the technical scheme of the application designs a wire saw unit as shown in fig. 1, which comprises: the cutting mechanism 2 is used for winding a cutting line to realize material processing; the winding and unwinding mechanisms 5 are two groups, are respectively positioned at two sides of the cutting mechanism 2 and are used for accommodating and releasing the reciprocating cutting lines wound on the cutting mechanism 2 in a matched manner; the cutting mechanism 2 comprises at least two groups of cutting assemblies capable of independently realizing material processing, a plurality of cutting stations are arranged between a group of take-up and pay-off mechanisms 5 in parallel, hardware cost can be saved, and meanwhile, the layout of an integral structure is more convenient, a preset inclined angle is arranged between a central connecting line between two cutting main rollers and a horizontal plane of the cutting assembly, a reciprocating cutting line is sequentially wound on all cutting line main rollers of the cutting assemblies, a cutting line net is also inclined substantially during cutting operation, liquid carrying capacity of the cutting line can be increased through the design, cooling effect is improved in the working process, accordingly, the cutting line is reduced, tension change is caused by temperature, working stability of the cutting line net is increased, and therefore the quality of a cut single silicon wafer is higher.

According to the technical scheme, the inclination setting of the cutting wire net matched with the inclination setting of the cutting main roller is designed according to the self gravity of the device and the liquid carrying capacity of the cutting wire net according to the inclination angle, the inclination angle suitable for the working of the cutting device and with optimal performance is designed, the angle of the preset inclination angle is preferably 20-40 degrees, the most preferably 28 degrees, at the moment, the gravity and the liquid carrying capacity can be balanced best, and the cutting effect is optimal.

As shown in fig. 1, in the present technical solution, the preset inclination angles of any two adjacent cutting assemblies in all the cutting assemblies are complementary, so that the cutting assemblies and the matched feeding mechanism 21 are symmetrically disposed in the cutting chamber, the feeding force and heat generated during cutting are symmetrical, and the main heat sources such as the main shaft, the motor, the cutting roller 22 and the feeding mechanism 21 are symmetrically disposed, so that the heat balance effect can be achieved, the thermal deformations of the whole machine are mutually offset, and a stable state is achieved.

In order to ensure the tension stability of the cutting line on each cutting assembly, a pass wheel assembly is arranged between any two adjacent cutting assemblies, and the pass wheel assembly is used for realizing the transition of the reciprocating cutting line between the two adjacent cutting assemblies. Preferably, the idler assembly comprises a guide wheel 4 mechanism or/and a tension wheel mechanism. In particular, in the embodiment, the idler wheel assembly can be provided with one linear tension wheel 3 and two fixed guide wheels 4 as shown in fig. 4, and for a cutting device with relatively low cutting requirements, the tension wheel can be not provided, and only one guide wheel 4 can be provided as shown in fig. 2. In the former case, as shown in fig. 4, the linear tension wheel 3 is disposed between the two guide wheels 4, and by using linear tension control, efficient tension adjustment is ensured, compared with the traditional swing rod mode, the tension of diamond wires on two sides of the tension wheel caused by swing angle error can be avoided, and if the tension is asynchronous, the linear tension wheel can be changed into a swing rod tension structure according to the precision and the requirements of specific applications. Regardless of the mode of the guide device, the wire outlet direction of the first station is preferentially parallel to the wire inlet direction of the second station between the two stations, so that superposition of cutting tension between the two stations can be counteracted through the guide wheel 4 or the combination of the guide wheel 4 and the tension wheel, the wire breakage risk is reduced, and more cutting assemblies can be connected in parallel. The tension pulley preferably uses a linear tension pulley 3 which does not change the direction of the string when the tension is adjusted.

As shown in fig. 4, in order to increase the cutting space of the cutting assembly, a single cutting assembly may be provided as three cutting rolls 22, but of course four or more cutting rolls 22 may be provided as well; also, when two cutting assemblies are provided in the technical solution of this application, the number of the cutting rollers 22 may be staggered, for example, one cutting assembly 2 is in a three-cutting-roller 22 structure, and the other cutting assembly 2 is in a two-cutting-roller 22 structure or a four-cutting-roller 22 structure, wherein the cutting roller 22 with increased loading space is an auxiliary cutting roller 22, and a power structure may be provided thereon or may be a driven roller. The cover design can increase the applicability of the cutting device to cutting workpieces of different sizes, and improve the overall cost performance of the cutting device.

In the present technical solution as shown in fig. 3, the winding and unwinding mechanism 5 is disposed on two sides of the cutting mechanism 2, and the specific winding and unwinding mechanism 5 includes a winding and unwinding roller 51, and a guide wheel 4 and/or a tension mechanism is further disposed between the winding and unwinding roller 51 and the adjacent cutting assembly, and the guide wheel 4 and the linear tension wheel 33 can be flexibly disposed according to the wiring requirement and the cutting green degree requirement, for example, the winding and unwinding mechanism 52 and the tension wheel position are adjusted by adopting a stub wire manner, so that the winding and unwinding mechanism is close to the cutting area, and the transmission link from the winding and unwinding mechanism to the cutting roller 22 is shortened; meanwhile, the transmission parts are reduced, the number of guide wheels is reduced, and in this case, only the guide wheels 4 are arranged. The winding and unwinding mechanism is disposed between the winding and unwinding roller 51 and the cutting mechanism 2, and the reciprocating cutting line is regularly arranged on the cutting roller 22 by the winding and unwinding mechanism 52, or the winding and unwinding roller 51 and the winding and unwinding mechanism are integrally disposed, so that the occupied space of the winding and unwinding mechanism 52 can be reduced to a greater extent by integrally disposing, and the winding and unwinding mechanism can directly perform winding and unwinding by controlling the winding and unwinding roller 51.

According to the wire saw unit, the cutting assembly comprises a cutting chamber and two wire reeling and unreeling chambers, wherein the two wire reeling and unreeling chambers are respectively positioned at two sides of the cutting chamber, and all cutting assemblies in the wire saw unit are arranged in the cutting chamber; the two sets of wire-winding and unwinding mechanisms 5 in the above-described wire saw unit are respectively disposed in the corresponding wire-winding and unwinding chambers. Through setting up the cutting assembly to a cutting chamber in, can make things convenient for electric control system and liquid way control system's setting, just can realize a plurality of cutting assemblies simultaneous working in the cutting chamber through single electric control system and single liquid way control system, convenient operation, and can reduce hardware cost. The upper part or the rear side of the cutting chamber can be provided with a liquid path control system installation chamber or an electric control system installation chamber, and the width of the whole cutting chamber is enlarged through the inclined arrangement of the single-end cutting assembly of the wire saw, so that the layout of the electric control system installation chamber and the liquid path control system installation chamber is more convenient.

In the technical design, the supporting frame of the cutting chamber comprises a front supporting upright 11 and a rear supporting upright 12 which are arranged in parallel, and the height of the rear supporting upright 12 is larger than that of the front supporting upright 11; all cutting rolls 22 of the cutting assembly in the cutting mechanism 2 are rotatably arranged between the front support column 11 and the rear support column 12 through bearing boxes, and the driving motor of the main cutting roll 22 is located at the rear side of the rear support column 12. The material feeding component of the cutting mechanism 2 is arranged on the rear supporting upright post 12 through a sliding mechanism, so that the installation is more stable.

The wire cutting device comprises a base 1, an electrical control system, a liquid path control system and the cutting assembly in the embodiment, wherein two coiling and uncoiling chambers of the cutting assembly are respectively arranged on two sides of the base 1 and are positioned at the lower part of the cutting chamber, and the electrical control system is used for controlling the operation of an cutting assembly in the cutting assembly; the liquid path control system is connected with the cutting chamber and used for providing cutting liquid for the cutting assembly. The cutting device is provided with the winding and unwinding mechanism 5, the liquid path control system and the electric control system, so that the hardware cost is effectively reduced. In addition, the cutting wire mesh of each of the cutting assemblies is disposed obliquely with respect to the horizontal plane in order to increase the stability of cutting. The first wire net is obliquely arranged, so that the energy of the cutting equipment in the liquid can be increased, the cooling effect is improved, and the stability of the cutting wire performance is ensured; secondly, the component force of gravity of the feeding mechanism 21 along the oblique feeding direction can be balanced, the oblique downward acting force is always kept on the feed screw, the reverse gap of the screw can be eliminated, and particularly when the cutting line is reversed, the influence of reversing cutting on the cutting quality of the workpiece can be reduced by one level. The inclined angle of the inclined line net is 20-40 degrees relative to the horizontal direction, and the clamping feet with 28 degrees are preferably adopted for the purpose of considering the liquid carrying capacity of the cutting line and the influence of the gravity stress of the cutting, so that the adverse influence of the reverse clearance of the screw on the cutting of a workpiece is reduced to a greater extent.

The technical scheme provides a preferred embodiment, namely on the basis of the wire cutting device, a group of liquid path control mechanisms and two cutting assemblies are arranged on the base 1, the two cutting assemblies are respectively positioned on two sides of the base 1, the electric control system and the liquid path control system are respectively positioned on the base 1 between the two cutting assemblies, the two cutting assemblies share one set of liquid path control system, and on the basis of the cutting assemblies which are designed in a multi-inclined mode in the upper Wen Xianju unit, the hardware cost is saved on the premise of guaranteeing stable cutting. And the cover is designed to be arranged in an electric control system and a liquid path control system, so that a larger installation space flows out, and more reasonable structural layout can be carried out according to the needs of customers.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A wire saw unit, comprising:

2. The wire saw unit according to claim 1, wherein the angle of the predetermined bevel angle is 20-40 degrees.

3. The wire saw unit according to claim 1, wherein the predetermined inclination angles of any two adjacent cutting assemblies are complementarily arranged.

4. The wire saw unit according to claim 1, wherein a pass wheel assembly capable of winding a cutting wire is arranged between any two adjacent cutting assemblies, so as to realize transition of a reciprocating cutting wire between the two adjacent cutting assemblies.

5. The wire saw unit according to claim 4, wherein the pass wheel assembly comprises a tension wheel mechanism for adjusting the tension of the cutting wire or/and a guide wheel mechanism for changing the routing of the cutting wire such that the tension of the cutting wire is constant at all the cutting assemblies.

6. The wire saw unit of claim 4, wherein the pass wheel assembly comprises a linear tension wheel and two fixed guide wheels, the linear tension wheel being disposed between the two guide wheels, the cutting wire from any one of the cutting assemblies passing sequentially around the guide wheel, the linear tension wheel and the other guide wheel and then into an adjacent cutting assembly.

7. The wire saw unit of claim 1, wherein the cutting assembly further comprises at least one auxiliary cutting roller to enlarge a cutting space between an upper and lower wire cutting web.

8. The wire saw unit according to any one of claims 1-7, wherein the wire take-up and pay-off mechanism comprises a take-up and pay-off roller, and a guide wheel mechanism or/and a tension mechanism is further provided between the take-up and pay-off roller and the adjacent cutting assembly.

9. The wire saw unit of claim 8, wherein the wire take-up and payout mechanism further comprises a wire-spool mechanism disposed between the take-up and payout roller and the cutting mechanism.

10. A cutting assembly comprising a cutting chamber and two wire takeup and takedown chambers, the two wire takeup and takedown chambers being located on opposite sides of the cutting chamber, respectively, all cutting assemblies in a wire saw unit according to any one of claims 1-9 being located in the cutting chamber; two sets of wire take-up and pay-off mechanisms in a wire saw unit according to any one of claims 1-9 are arranged in respective wire take-up and pay-off chambers.

11. The cutting assembly of claim 10, wherein the support frame of the cutting chamber comprises front and rear support posts arranged in parallel, and wherein the rear support post has a height greater than the front support post; all cutting rollers of the cutting mechanism are rotatably arranged between the front support upright post and the rear support upright post through bearing boxes, and a driving motor of the main cutting roller is positioned at the rear side of the rear support upright post.

12. The cutting assembly of claim 11, wherein a material feed assembly of the cutting mechanism is disposed on the rear support post.

13. A wire cutting device which is characterized by comprising a base, an electrical control system, a liquid path control system and the cutting assembly according to any one of claims 10-12, wherein two coiling and uncoiling chambers of the cutting assembly are respectively arranged on two sides of the base and are positioned at the lower part of the cutting chamber, and the electrical control system is used for controlling the operation of an internal cutting assembly in the cutting assembly; the liquid path control system is connected with the cutting chamber and used for providing cutting liquid for the cutting assembly.

14. The wire cutting device of claim 13, wherein a set of fluid path control mechanism and two cutting assemblies are provided on the base, and the two cutting assemblies are respectively located on two sides of the base, and the electrical control system and the fluid path control system are respectively located on the base between the two cutting assemblies.

15. The wire cutting apparatus of claim 13, wherein the wire cutting apparatus is a microtome.