CN219235765U - Wire cutting device - Google Patents

Abstract

The present utility model provides a wire cutting device, comprising: the silicon wafer cutting device comprises a material clamping mechanism, a cutting mechanism and a supporting base, wherein the base body, the clamping mechanism fixing seat and the cutting mechanism fixing seat are arranged on the base body side by side, the cutting mechanism fixing seat is an inclined base, the cutting mechanism is provided with a preset inclined angle relative to a horizontal plane so as to realize oblique line net cutting, the material clamping mechanism is arranged on the supporting base, and the liquid carrying capacity of a cutting line in the silicon wafer cutting process can be improved through oblique line net design, so that the cooling effect is improved; according to the design of the material clamping mechanism, through the inclined design of the material clamping mechanism, a component force of the gravity of the mechanism along the inclined feeding direction is used for always applying an inclined downward acting force to the feed screw, so that the screw of the feed mechanism can always bear pressure, the continuous attachment of screw nuts is achieved, and the purpose of eliminating a reverse gap of the screw is achieved.

Description

Wire cutting device

Technical Field

The utility model relates to the technical field of cutting devices, in particular to a diagonal net squaring device.

Background

In the technical field of cutting of high-hardness brittle materials, for example, the processing process of a photovoltaic silicon wafer generally needs to be subjected to three processes of cutting, squaring and slicing, the existing cutting device generally adopts two modes of reciprocating cutting and wire mesh cutting formed by loop wires, and for reciprocating wire cutting, reversing stripes are easily formed on a cutting surface due to the tension of a cutting wire and the factors of a screw reverse gap of the device per se during reversing, the former can be eliminated to a certain extent by adjusting a tension mechanism in real time or changing the feeding speed, but the influence of the screw reverse gap is not easy to eliminate or reduce in the existing horizontal or vertical cutting device.

There is a need for a wire cutting apparatus that cuts relatively stably, in view of the problems in the prior art.

Disclosure of Invention

Aiming at the technical problems, the technical scheme of the utility model provides a wire cutting device which is used for processing high-hardness and brittle materials.

The present utility model provides a wire cutting apparatus including: the material clamping mechanism, the cutting mechanism and the supporting base are arranged on the base body side by side; the cutting mechanism is provided with a preset inclination angle relative to the horizontal plane, and the material clamping mechanism is obliquely arranged on the supporting base and used for driving the material to be cut to move relative to the cutting mechanism so as to realize cutting.

According to the technical scheme, the cutting mechanism fixing seat is an inclined base, and the cutting mechanism is arranged on the inclined surface of the cutting mechanism fixing seat through the sliding mechanism.

According to further optimization of the technical scheme, the cutting mechanism comprises a cutting wheel set and a cutting wheel fixing frame, the cutting wheel set is fixed on the cutting wheel fixing frame and used for winding a cutting line, and a central connecting line of a main cutting wheel in the cutting wheel set is arranged on a cutting path of the material clamping mechanism according to the preset inclination angle.

According to the technical scheme, the cutting mechanism is arranged on one side, close to the clamping mechanism fixing seat, of the cutting mechanism fixing seat through the cutting wheel fixing frame, and the cutting wheel fixing frame is arranged on the cutting mechanism fixing seat through the sliding mechanism.

According to the technical scheme, the cutting mechanism further comprises a fixed sliding block, and the cutting mechanism fixing frame is arranged on the cutting mechanism fixing seat in a sliding mode through the fixed sliding block.

According to the technical scheme, the fixed sliding block is in a frustum shape with rectangular front and rear sides, and the fixed seat of the cutting mechanism is a triangular inclined base.

According to the technical scheme, the number of the cutting mechanism fixing seats is two, and the two cutting mechanism fixing seats are symmetrically arranged on the left side and the right side of the clamping mechanism fixing seat respectively; the cutting mechanism is connected with the cutting mechanism fixing seats on two sides through synchronous control sliding mechanisms respectively, or the material clamping mechanism is arranged on the clamping mechanism fixing seats through the sliding mechanisms.

According to further optimization of the technical scheme, the material clamping mechanism comprises a clamping headstock, a clamping tailstock and two material clamping parts which are respectively arranged on the clamping headstock and the clamping tailstock, wherein the clamping headstock and the clamping tailstock are respectively arranged at the front end and the rear end of the supporting base, and the inclination angle of a central connecting line of the two material clamping parts is complementary with the preset inclination angle.

According to the technical scheme, the material clamping part comprises a main material clamping mechanism and cutting edge material clamping mechanisms, and the number of the cutting edge material clamping mechanisms is one, two or four.

According to further optimization of the technical scheme, the material clamping mechanism further comprises a silicon rod rotating mechanism, wherein the rotating mechanism is respectively arranged on the clamping headstock and the clamping tailstock and used for rotating the material clamping part.

According to the technical scheme, the linear cutting mechanism is an squarer.

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

1. the material can be convenient for cutting fluid to flow into the seam along the inclined plane of the material through the central line of the clamping mechanism and the inclined feeding cutting of the preset inclined angle, and meanwhile, the central connecting line between the cutting rollers of the cutting mechanism is provided with the preset inclined angle, so that the cutting fluid can flow into the seam along the inclined cutting line in an inclined manner, and the aim of more efficient cooling is achieved. Specifically through setting up cutting mechanism slope can increase the time that coolant liquid was attached to on the cutting line, according to the test of liquid gravity and attached liquid surface tension, design when the inclination of cutting wire net is 25-45 degrees, the liquid can furthest guarantee that liquid enters into the cutting groove along with the oblique line net in the component of gravity direction, the refrigerated effect when increasing the cutting.

2. According to the technical scheme, when the material clamping mechanism is obliquely fed, a part of gravity of the horizontal arrangement structure is balanced by utilizing the component force of gravity of the mechanism to fully vertically and downwards act force, the purpose of optimizing the gravity load in the cutting direction is achieved, and the best stress effect is obtained through experiments when the inclination angle is 15-30 degrees.

3. By means of the oblique design, component force of gravity of materials along the oblique feeding direction always acts on the feeding screw rod to enable the screw rod of the feeding mechanism to bear pressure all the time, continuous attachment of screw nuts of the screw rod is achieved, and therefore the purpose of eliminating reverse gaps of the screw rod is achieved.

4. Through setting up the structure of sloping base, can make the coolant liquid that contains silica flour piece can not stop on sloping base, can not take place the circumstances of ponding more to reduced the corruption that contains cutting fluid such as silica flour to setting up the mechanism on the sloping base, can realize cutting structure and silicon rod feed mechanism's underlying, increased overall structure's stability.

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 structural view of a wire cutting apparatus of 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:

114-a clamping mechanism fixing seat; 115-a cutting mechanism holder; 21-a cutting wheel set; 22-a cutting wheel holder; 32-clamping a headstock; 31-clamping a tailstock; 4-sliding rails; 5-feed screw.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a commodity or system comprising such element. In the description of the present utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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

The photovoltaic power generation belongs to clean energy, is more suitable for the background of the present international energy development, so the photovoltaic technical field also brings a new technological revolution, wherein in the monocrystalline silicon wafer cutting technical field, in order to improve the qualification rate of silicon wafer cutting, the requirements on a cutting surface and a cutting angle are higher and higher, the cutting size deviation is minimized when a silicon rod is required to be cut, the cutting size deviation is usually between-0.4 mm and 0.5mm, a certain technical bottleneck is achieved, the factors influencing the cutting precision are various, the important factors are that the tension of a cutting wire mesh is changed in the cutting process, the cutting surface deviation is larger, and the cooling efficiency is required to be improved in the cutting process so as to reduce the adverse effect caused by excessive cutting wire temperature; in addition, in the cutting process, the cutting speed is adjusted, or reversing is needed when the reciprocating linear cutting is used, in this case, cutting lines are generated on a cutting surface under the action of a screw reverse gap in the device, so that the cutting quality is affected, and the reverse gap of the screw is needed to be eliminated when the device is designed, so that the cutting quality is improved.

Aiming at the problems in the prior art, the technical scheme of the utility model designs a wire cutting device, which comprises: the technical scheme is that the cutting mechanism fixing seat 115 is arranged into an inclined base, a component force of material gravity along an oblique feeding direction always acts on a feed screw by an oblique downward acting force, the screw of the feed mechanism always bears pressure, and the purpose of continuously attaching a screw nut is achieved, so that a screw nut reverse gap is eliminated, the cutting mechanism is arranged on an inclined surface of the cutting mechanism fixing seat 115 through a sliding mechanism, the specific cutting mechanism comprises a fixed slide block, a cutting wheel set, a cutting wheel fixing frame and a cutting wire net wound on the cutting wheel set, the cutting wheel fixing frame is arranged on one side of the fixed slide block close to the material clamping mechanism, the cutting wheel fixing frame and the fixed slide block can be integrally formed, and the cutting wheel set is fixed on a material clamping path of the material clamping mechanism; in order to increase the stability of the cutting mechanism, the fixed sliding block is arranged to be of a structure with a large bottom and a small upper part, and is matched with the triangular inclined base structure of the cutting mechanism fixing seat, so that the area between the fixed sliding block and the sliding rail 4 on the cutting mechanism fixing seat can be increased, and the fixed sliding block can stably slide on the sliding rail 4 of the cutting mechanism fixing seat under the control of the feed screw 5.

The cutting wire net that winds in the cutting mechanism of design in this technical scheme is the loop wire or reciprocating line, directly wind when being the loop wire and establish on cutting wheelset, can set up winding displacement mechanism on cutting mechanism fixing base or fixture fixing base when being the reciprocating line, specific setting position can be according to the space layout condition and do adaptive design, if when the cutting mechanism fixing base sets up to two, set up in the left and right sides of fixture fixing base respectively side by side, the installation of cutting mechanism is realized to fixed cutting wheel mount through two fixed sliders, this embodiment can furthest's assurance cutting wheel mount's stability, use reciprocating wire cutting, can set up two sets of take-up and pay-off mechanisms respectively on the cutting mechanism fixing base of both sides or fixed sliders, fixture fixing base 114 is fixed, the cutting wire net motion on the drive cutting panel through the cutting mechanism fixing base 115 realizes the process of opening, specific process of opening is, drive cutting mechanism moves on the material centre gripping route under the effect of slip feed mechanism, realize the process of opening.

According to the technical scheme, the material clamping mechanism and the cutting mechanism are arranged on the supporting base through the cutting chamber frame, the cutting mechanism is provided with a preset inclined angle relative to the horizontal plane so as to form inclined line net cutting, the experiment shows that the inclined angle of the inclined line net is set between 15 and 45 degrees, the cooling performance of the whole device is optimal, and the angle between 25 degrees or 30 degrees or between 25 and 30 degrees is preferably set under the action of gravity component force in the inclined base; the material clamping mechanism is arranged on the supporting base, the center line of the material clamping mechanism is perpendicular to the cutting surface of the cutting mechanism, an included angle of 90-alpha is formed, and the orthogonal cutting of the oblique line net and the material to be cut during cutting is ensured.

The cutting mechanism comprises a cutting wheel set 21 and a cutting wheel fixing frame 22, the cutting wheel set 21 is fixed on the cutting wheel fixing frame 22, a cutting wire net for cutting materials is wound on the cutting wheel set 21, the cutting wire net is arranged on a cutting path of the material clamping mechanism according to a preset inclined angle through the cutting wheel set 21, a liquid path control assembly is further arranged on a supporting base, a spraying device of the liquid path control assembly is arranged opposite to a cutting line of a cutting area in the cutting wire net, the spraying device is preferably used for spraying obliquely upwards, the cutting line is arranged on the upper portion of a spray liquid parabola through position layout, the gravity of cooling liquid can be counteracted through upward spraying force, the cutting wire net is more easily attached to the cutting wire net, and the liquid carrying capacity of the cutting wire net is further improved through matching with a slant wire net design.

The cutting wheel group 21 in the cutting mechanism can be provided with a loop wire or a reciprocating wire, when the reciprocating wire is arranged, a group of winding and unwinding mechanisms are respectively arranged on two sides of the supporting base, the winding and unwinding mechanisms are wound on the cutting wheel group 21 through guide wheels, and the guide wheels can be arranged outside a cutting chamber where the cutting mechanism is arranged to prevent the cutting mechanism from being corroded by cutting fluid. In one embodiment, a tension mechanism and a wire arranging mechanism are further arranged between the wire winding and unwinding mechanism and the guide wheel; the preferable tension mechanism is a linear tension mechanism or a swing rod tension mechanism, when the cutting mechanism works, the wire winding mechanism performs wire winding through the wire winding mechanism, and the tension of the cutting wire is kept stable through the tension mechanism; the wire flowing out of the cutting mechanism enters the wire arranging mechanism at the other side, and enters the wire collecting mechanism after being arranged. An alternative embodiment is that an independent wire arranging mechanism is not used, the wire collecting and releasing mechanism is directly fixed on the supporting base through the wire arranging sliding device, when the wire collecting and releasing mechanism works, wire arranging can be carried out under the control of the wire arranging sliding device, and wires released by the wire arranging mechanism on one specific side directly enter the cutting mechanism through the wire winding wheel group; the line that cutting mechanism flows directly gets into on the take-up roller of take-up mechanism through the reel group of opposite side to realize the winding displacement process through the motion of winding displacement slider of bottom, through the integrative setting of take-up and pay-off mechanism and winding displacement slip roller, save space more for last embodiment, the overall arrangement is more reasonable.

The material clamping mechanism comprises a material clamping part, a clamping headstock 32 and a clamping tailstock 31, the clamping headstock 32 and the clamping tailstock 31 are respectively arranged at the front end and the rear end of the supporting base, and the material clamping part 33 comprises a main material clamping mechanism and a cutting edge material clamping mechanism, so that the main material and the edge cutting material after the silicon rod is cut can be simultaneously clamped. The material clamping mechanism further comprises a silicon rod rotating mechanism, which can be of a screw locking structure, namely, a screw cap is arranged at one end of the screw to fasten the screw with a clamping headstock or a tailstock through the pressure of the screw, the screw can be loosened in the process of rotating the screw at a rotating angle, and then the screw is screwed and fixed after rotating the screw. The device can be used for cutting four lines, can also be used for cutting by single line or double lines, can realize the effect of cutting through the 90-degree rotation of the silicon rod slewing mechanism for 4 times or 2 times only under the condition of the latter two, and simultaneously is matched with the setting condition of the cutting line net, and the number of the cutting edge material clamping mechanisms is selected to be installed, can be one, two or four, and is preferably four, so that the material clamping part can be directly and integrally rotated without rotating the material to be cut even when the single line is cut. For the four-line square design, the cutting process flow is that a workpiece enters a wire mesh from bottom to top along a feed inclined plane (the feed mode from bottom to top can be cutting mechanism movement or material clamping mechanism movement, firstly, the material to be cut contacts a left inclined wire mesh and a right inclined wire mesh to realize two-line square of a symmetrical plane, the arrangement of the left wire mesh and the right wire mesh relative to the upper wire mesh and the lower wire mesh in the axial direction of the material is staggered by a fixed distance, such as 30-50mm, then the workpiece enters the upper wire mesh and the lower wire mesh to realize the square of the other pair of symmetrical planes, and when the workpiece cuts out the wire mesh along the axis, namely the oblique feed direction, all the cutting process is completed. When the workpiece just contacts the diamond wire during cutting, the cutting feeding speed is not too high, preferably 1.5mm/s, and after the wire is completely cut into the workpiece, the feeding speed can be accelerated and stabilized to reach the tail end of the workpiece, and the cutting speed is reduced at the last end to be cut out to ensure a good cutting-out state.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

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 (10)

1. A wire cutting apparatus, comprising: the material clamping mechanism, the cutting mechanism and the supporting base are arranged on the base body side by side, the cutting mechanism fixing base is an inclined base, and the cutting mechanism is arranged on the inclined surface of the cutting mechanism fixing base through a sliding mechanism; the cutting mechanism is provided with a preset inclination angle relative to the horizontal plane, and the material clamping mechanism is obliquely arranged on the supporting base and used for driving the material to be cut to move relative to the cutting mechanism so as to realize cutting.

2. The wire cutting device according to claim 1, wherein the cutting mechanism comprises a cutting wheel set and a cutting wheel fixing frame, the cutting wheel set is fixed on the cutting wheel fixing frame and used for winding a cutting wire, and a central connecting line of two main cutting wheels in the cutting wheel set is arranged on a cutting path of the material clamping mechanism according to the preset inclination angle.

3. The wire cutting device according to claim 2, wherein the cutting mechanism is disposed on a side of the cutting mechanism fixing base adjacent to the clamping mechanism fixing base through a cutting wheel fixing frame, and the cutting wheel fixing frame is disposed on the cutting mechanism fixing base through a sliding mechanism.

4. The wire cutting device of claim 2, further comprising a fixed slider, wherein the cutting mechanism mount is slidably disposed on the cutting mechanism mount via the fixed slider.

5. The wire cutting device according to claim 4, wherein the fixed slider is in a truncated cone shape with rectangular front and rear sides, and the cutting mechanism fixing base is a triangular inclined base.

6. The wire cutting device according to any one of claims 1 to 5, wherein the number of the cutting mechanism fixing seats is two, and the two cutting mechanism fixing seats are symmetrically arranged on the left and right sides of the clamping mechanism fixing seat respectively; the cutting mechanism is connected with the cutting mechanism fixing seats on two sides through synchronous control sliding mechanisms respectively or the material clamping mechanism is arranged on the clamping mechanism fixing seats through the sliding mechanisms.

7. The wire cutting device according to claim 6, wherein the material clamping mechanism comprises a clamping head frame, a clamping tail frame and two material clamping parts respectively arranged on the clamping head frame and the clamping tail frame, the clamping head frame and the clamping tail frame are respectively arranged at the front end and the rear end of the supporting base, and the inclination angles of the central connecting wires of the two material clamping parts are complementary with the preset inclination angles.

8. The wire cutting device according to claim 7, wherein the material clamping portion includes a main material clamping mechanism and a cutting edge clamping mechanism, and the number of the cutting edge clamping mechanisms is one, two or four.

9. The wire cutting apparatus of claim 7, wherein the material clamping mechanism further comprises a silicon rod turning mechanism mounted on the clamping headstock and clamping tailstock, respectively, for rotating the material clamping portion.

10. The wire cutting device of claim 6, wherein the wire cutting device is an squarer.

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